/* * thinkpad_acpi.c - ThinkPad ACPI Extras * * * Copyright (C) 2004-2005 Borislav Deianov * Copyright (C) 2006-2008 Henrique de Moraes Holschuh * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA * 02110-1301, USA. */ #define TPACPI_VERSION "0.20" #define TPACPI_SYSFS_VERSION 0x020200 /* * Changelog: * 2007-10-20 changelog trimmed down * * 2007-03-27 0.14 renamed to thinkpad_acpi and moved to * drivers/misc. * * 2006-11-22 0.13 new maintainer * changelog now lives in git commit history, and will * not be updated further in-file. * * 2005-03-17 0.11 support for 600e, 770x * thanks to Jamie Lentin * * 2005-01-16 0.9 use MODULE_VERSION * thanks to Henrik Brix Andersen * fix parameter passing on module loading * thanks to Rusty Russell * thanks to Jim Radford * 2004-11-08 0.8 fix init error case, don't return from a macro * thanks to Chris Wright */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include /* ThinkPad CMOS commands */ #define TP_CMOS_VOLUME_DOWN 0 #define TP_CMOS_VOLUME_UP 1 #define TP_CMOS_VOLUME_MUTE 2 #define TP_CMOS_BRIGHTNESS_UP 4 #define TP_CMOS_BRIGHTNESS_DOWN 5 #define TP_CMOS_THINKLIGHT_ON 12 #define TP_CMOS_THINKLIGHT_OFF 13 /* NVRAM Addresses */ enum tp_nvram_addr { TP_NVRAM_ADDR_HK2 = 0x57, TP_NVRAM_ADDR_THINKLIGHT = 0x58, TP_NVRAM_ADDR_VIDEO = 0x59, TP_NVRAM_ADDR_BRIGHTNESS = 0x5e, TP_NVRAM_ADDR_MIXER = 0x60, }; /* NVRAM bit masks */ enum { TP_NVRAM_MASK_HKT_THINKPAD = 0x08, TP_NVRAM_MASK_HKT_ZOOM = 0x20, TP_NVRAM_MASK_HKT_DISPLAY = 0x40, TP_NVRAM_MASK_HKT_HIBERNATE = 0x80, TP_NVRAM_MASK_THINKLIGHT = 0x10, TP_NVRAM_MASK_HKT_DISPEXPND = 0x30, TP_NVRAM_MASK_HKT_BRIGHTNESS = 0x20, TP_NVRAM_MASK_LEVEL_BRIGHTNESS = 0x0f, TP_NVRAM_POS_LEVEL_BRIGHTNESS = 0, TP_NVRAM_MASK_MUTE = 0x40, TP_NVRAM_MASK_HKT_VOLUME = 0x80, TP_NVRAM_MASK_LEVEL_VOLUME = 0x0f, TP_NVRAM_POS_LEVEL_VOLUME = 0, }; /* ACPI HIDs */ #define TPACPI_ACPI_HKEY_HID "IBM0068" /* Input IDs */ #define TPACPI_HKEY_INPUT_PRODUCT 0x5054 /* "TP" */ #define TPACPI_HKEY_INPUT_VERSION 0x4101 /**************************************************************************** * Main driver */ #define TPACPI_NAME "thinkpad" #define TPACPI_DESC "ThinkPad ACPI Extras" #define TPACPI_FILE TPACPI_NAME "_acpi" #define TPACPI_URL "http://ibm-acpi.sf.net/" #define TPACPI_MAIL "ibm-acpi-devel@lists.sourceforge.net" #define TPACPI_PROC_DIR "ibm" #define TPACPI_ACPI_EVENT_PREFIX "ibm" #define TPACPI_DRVR_NAME TPACPI_FILE #define TPACPI_DRVR_SHORTNAME "tpacpi" #define TPACPI_HWMON_DRVR_NAME TPACPI_NAME "_hwmon" #define TPACPI_NVRAM_KTHREAD_NAME "ktpacpi_nvramd" #define TPACPI_WORKQUEUE_NAME "ktpacpid" #define TPACPI_MAX_ACPI_ARGS 3 /* Debugging */ #define TPACPI_LOG TPACPI_FILE ": " #define TPACPI_ERR KERN_ERR TPACPI_LOG #define TPACPI_NOTICE KERN_NOTICE TPACPI_LOG #define TPACPI_INFO KERN_INFO TPACPI_LOG #define TPACPI_DEBUG KERN_DEBUG TPACPI_LOG #define TPACPI_DBG_ALL 0xffff #define TPACPI_DBG_ALL 0xffff #define TPACPI_DBG_INIT 0x0001 #define TPACPI_DBG_EXIT 0x0002 #define dbg_printk(a_dbg_level, format, arg...) \ do { if (dbg_level & a_dbg_level) \ printk(TPACPI_DEBUG "%s: " format, __func__ , ## arg); \ } while (0) #ifdef CONFIG_THINKPAD_ACPI_DEBUG #define vdbg_printk(a_dbg_level, format, arg...) \ dbg_printk(a_dbg_level, format, ## arg) static const char *str_supported(int is_supported); #else #define vdbg_printk(a_dbg_level, format, arg...) #endif #define onoff(status, bit) ((status) & (1 << (bit)) ? "on" : "off") #define enabled(status, bit) ((status) & (1 << (bit)) ? "enabled" : "disabled") #define strlencmp(a, b) (strncmp((a), (b), strlen(b))) /**************************************************************************** * Driver-wide structs and misc. variables */ struct ibm_struct; struct tp_acpi_drv_struct { const struct acpi_device_id *hid; struct acpi_driver *driver; void (*notify) (struct ibm_struct *, u32); acpi_handle *handle; u32 type; struct acpi_device *device; }; struct ibm_struct { char *name; int (*read) (char *); int (*write) (char *); void (*exit) (void); void (*resume) (void); void (*suspend) (pm_message_t state); struct list_head all_drivers; struct tp_acpi_drv_struct *acpi; struct { u8 acpi_driver_registered:1; u8 acpi_notify_installed:1; u8 proc_created:1; u8 init_called:1; u8 experimental:1; } flags; }; struct ibm_init_struct { char param[32]; int (*init) (struct ibm_init_struct *); struct ibm_struct *data; }; static struct { #ifdef CONFIG_THINKPAD_ACPI_BAY u32 bay_status:1; u32 bay_eject:1; u32 bay_status2:1; u32 bay_eject2:1; #endif u32 bluetooth:1; u32 hotkey:1; u32 hotkey_mask:1; u32 hotkey_wlsw:1; u32 hotkey_tablet:1; u32 light:1; u32 light_status:1; u32 bright_16levels:1; u32 bright_acpimode:1; u32 wan:1; u32 fan_ctrl_status_undef:1; u32 input_device_registered:1; u32 platform_drv_registered:1; u32 platform_drv_attrs_registered:1; u32 sensors_pdrv_registered:1; u32 sensors_pdrv_attrs_registered:1; u32 sensors_pdev_attrs_registered:1; u32 hotkey_poll_active:1; } tp_features; static struct { u16 hotkey_mask_ff:1; u16 bright_cmos_ec_unsync:1; } tp_warned; struct thinkpad_id_data { unsigned int vendor; /* ThinkPad vendor: * PCI_VENDOR_ID_IBM/PCI_VENDOR_ID_LENOVO */ char *bios_version_str; /* Something like 1ZET51WW (1.03z) */ char *ec_version_str; /* Something like 1ZHT51WW-1.04a */ u16 bios_model; /* Big Endian, TP-1Y = 0x5931, 0 = unknown */ u16 ec_model; char *model_str; /* ThinkPad T43 */ char *nummodel_str; /* 9384A9C for a 9384-A9C model */ }; static struct thinkpad_id_data thinkpad_id; static enum { TPACPI_LIFE_INIT = 0, TPACPI_LIFE_RUNNING, TPACPI_LIFE_EXITING, } tpacpi_lifecycle; static int experimental; static u32 dbg_level; static struct workqueue_struct *tpacpi_wq; /* Special LED class that can defer work */ struct tpacpi_led_classdev { struct led_classdev led_classdev; struct work_struct work; enum led_brightness new_brightness; unsigned int led; }; /**************************************************************************** **************************************************************************** * * ACPI Helpers and device model * **************************************************************************** ****************************************************************************/ /************************************************************************* * ACPI basic handles */ static acpi_handle root_handle; #define TPACPI_HANDLE(object, parent, paths...) \ static acpi_handle object##_handle; \ static acpi_handle *object##_parent = &parent##_handle; \ static char *object##_path; \ static char *object##_paths[] = { paths } TPACPI_HANDLE(ec, root, "\\_SB.PCI0.ISA.EC0", /* 240, 240x */ "\\_SB.PCI.ISA.EC", /* 570 */ "\\_SB.PCI0.ISA0.EC0", /* 600e/x, 770e, 770x */ "\\_SB.PCI0.ISA.EC", /* A21e, A2xm/p, T20-22, X20-21 */ "\\_SB.PCI0.AD4S.EC0", /* i1400, R30 */ "\\_SB.PCI0.ICH3.EC0", /* R31 */ "\\_SB.PCI0.LPC.EC", /* all others */ ); TPACPI_HANDLE(ecrd, ec, "ECRD"); /* 570 */ TPACPI_HANDLE(ecwr, ec, "ECWR"); /* 570 */ TPACPI_HANDLE(cmos, root, "\\UCMS", /* R50, R50e, R50p, R51, */ /* T4x, X31, X40 */ "\\CMOS", /* A3x, G4x, R32, T23, T30, X22-24, X30 */ "\\CMS", /* R40, R40e */ ); /* all others */ TPACPI_HANDLE(hkey, ec, "\\_SB.HKEY", /* 600e/x, 770e, 770x */ "^HKEY", /* R30, R31 */ "HKEY", /* all others */ ); /* 570 */ TPACPI_HANDLE(vid, root, "\\_SB.PCI.AGP.VGA", /* 570 */ "\\_SB.PCI0.AGP0.VID0", /* 600e/x, 770x */ "\\_SB.PCI0.VID0", /* 770e */ "\\_SB.PCI0.VID", /* A21e, G4x, R50e, X30, X40 */ "\\_SB.PCI0.AGP.VID", /* all others */ ); /* R30, R31 */ /************************************************************************* * ACPI helpers */ static int acpi_evalf(acpi_handle handle, void *res, char *method, char *fmt, ...) { char *fmt0 = fmt; struct acpi_object_list params; union acpi_object in_objs[TPACPI_MAX_ACPI_ARGS]; struct acpi_buffer result, *resultp; union acpi_object out_obj; acpi_status status; va_list ap; char res_type; int success; int quiet; if (!*fmt) { printk(TPACPI_ERR "acpi_evalf() called with empty format\n"); return 0; } if (*fmt == 'q') { quiet = 1; fmt++; } else quiet = 0; res_type = *(fmt++); params.count = 0; params.pointer = &in_objs[0]; va_start(ap, fmt); while (*fmt) { char c = *(fmt++); switch (c) { case 'd': /* int */ in_objs[params.count].integer.value = va_arg(ap, int); in_objs[params.count++].type = ACPI_TYPE_INTEGER; break; /* add more types as needed */ default: printk(TPACPI_ERR "acpi_evalf() called " "with invalid format character '%c'\n", c); return 0; } } va_end(ap); if (res_type != 'v') { result.length = sizeof(out_obj); result.pointer = &out_obj; resultp = &result; } else resultp = NULL; status = acpi_evaluate_object(handle, method, ¶ms, resultp); switch (res_type) { case 'd': /* int */ if (res) *(int *)res = out_obj.integer.value; success = status == AE_OK && out_obj.type == ACPI_TYPE_INTEGER; break; case 'v': /* void */ success = status == AE_OK; break; /* add more types as needed */ default: printk(TPACPI_ERR "acpi_evalf() called " "with invalid format character '%c'\n", res_type); return 0; } if (!success && !quiet) printk(TPACPI_ERR "acpi_evalf(%s, %s, ...) failed: %d\n", method, fmt0, status); return success; } static int acpi_ec_read(int i, u8 *p) { int v; if (ecrd_handle) { if (!acpi_evalf(ecrd_handle, &v, NULL, "dd", i)) return 0; *p = v; } else { if (ec_read(i, p) < 0) return 0; } return 1; } static int acpi_ec_write(int i, u8 v) { if (ecwr_handle) { if (!acpi_evalf(ecwr_handle, NULL, NULL, "vdd", i, v)) return 0; } else { if (ec_write(i, v) < 0) return 0; } return 1; } #if defined(CONFIG_THINKPAD_ACPI_DOCK) || defined(CONFIG_THINKPAD_ACPI_BAY) static int _sta(acpi_handle handle) { int status; if (!handle || !acpi_evalf(handle, &status, "_STA", "d")) status = 0; return status; } #endif static int issue_thinkpad_cmos_command(int cmos_cmd) { if (!cmos_handle) return -ENXIO; if (!acpi_evalf(cmos_handle, NULL, NULL, "vd", cmos_cmd)) return -EIO; return 0; } /************************************************************************* * ACPI device model */ #define TPACPI_ACPIHANDLE_INIT(object) \ drv_acpi_handle_init(#object, &object##_handle, *object##_parent, \ object##_paths, ARRAY_SIZE(object##_paths), &object##_path) static void drv_acpi_handle_init(char *name, acpi_handle *handle, acpi_handle parent, char **paths, int num_paths, char **path) { int i; acpi_status status; vdbg_printk(TPACPI_DBG_INIT, "trying to locate ACPI handle for %s\n", name); for (i = 0; i < num_paths; i++) { status = acpi_get_handle(parent, paths[i], handle); if (ACPI_SUCCESS(status)) { *path = paths[i]; dbg_printk(TPACPI_DBG_INIT, "Found ACPI handle %s for %s\n", *path, name); return; } } vdbg_printk(TPACPI_DBG_INIT, "ACPI handle for %s not found\n", name); *handle = NULL; } static void dispatch_acpi_notify(acpi_handle handle, u32 event, void *data) { struct ibm_struct *ibm = data; if (tpacpi_lifecycle != TPACPI_LIFE_RUNNING) return; if (!ibm || !ibm->acpi || !ibm->acpi->notify) return; ibm->acpi->notify(ibm, event); } static int __init setup_acpi_notify(struct ibm_struct *ibm) { acpi_status status; int rc; BUG_ON(!ibm->acpi); if (!*ibm->acpi->handle) return 0; vdbg_printk(TPACPI_DBG_INIT, "setting up ACPI notify for %s\n", ibm->name); rc = acpi_bus_get_device(*ibm->acpi->handle, &ibm->acpi->device); if (rc < 0) { printk(TPACPI_ERR "acpi_bus_get_device(%s) failed: %d\n", ibm->name, rc); return -ENODEV; } acpi_driver_data(ibm->acpi->device) = ibm; sprintf(acpi_device_class(ibm->acpi->device), "%s/%s", TPACPI_ACPI_EVENT_PREFIX, ibm->name); status = acpi_install_notify_handler(*ibm->acpi->handle, ibm->acpi->type, dispatch_acpi_notify, ibm); if (ACPI_FAILURE(status)) { if (status == AE_ALREADY_EXISTS) { printk(TPACPI_NOTICE "another device driver is already " "handling %s events\n", ibm->name); } else { printk(TPACPI_ERR "acpi_install_notify_handler(%s) failed: %d\n", ibm->name, status); } return -ENODEV; } ibm->flags.acpi_notify_installed = 1; return 0; } static int __init tpacpi_device_add(struct acpi_device *device) { return 0; } static int __init register_tpacpi_subdriver(struct ibm_struct *ibm) { int rc; dbg_printk(TPACPI_DBG_INIT, "registering %s as an ACPI driver\n", ibm->name); BUG_ON(!ibm->acpi); ibm->acpi->driver = kzalloc(sizeof(struct acpi_driver), GFP_KERNEL); if (!ibm->acpi->driver) { printk(TPACPI_ERR "kzalloc(ibm->driver) failed\n"); return -ENOMEM; } sprintf(ibm->acpi->driver->name, "%s_%s", TPACPI_NAME, ibm->name); ibm->acpi->driver->ids = ibm->acpi->hid; ibm->acpi->driver->ops.add = &tpacpi_device_add; rc = acpi_bus_register_driver(ibm->acpi->driver); if (rc < 0) { printk(TPACPI_ERR "acpi_bus_register_driver(%s) failed: %d\n", ibm->name, rc); kfree(ibm->acpi->driver); ibm->acpi->driver = NULL; } else if (!rc) ibm->flags.acpi_driver_registered = 1; return rc; } /**************************************************************************** **************************************************************************** * * Procfs Helpers * **************************************************************************** ****************************************************************************/ static int dispatch_procfs_read(char *page, char **start, off_t off, int count, int *eof, void *data) { struct ibm_struct *ibm = data; int len; if (!ibm || !ibm->read) return -EINVAL; len = ibm->read(page); if (len < 0) return len; if (len <= off + count) *eof = 1; *start = page + off; len -= off; if (len > count) len = count; if (len < 0) len = 0; return len; } static int dispatch_procfs_write(struct file *file, const char __user *userbuf, unsigned long count, void *data) { struct ibm_struct *ibm = data; char *kernbuf; int ret; if (!ibm || !ibm->write) return -EINVAL; kernbuf = kmalloc(count + 2, GFP_KERNEL); if (!kernbuf) return -ENOMEM; if (copy_from_user(kernbuf, userbuf, count)) { kfree(kernbuf); return -EFAULT; } kernbuf[count] = 0; strcat(kernbuf, ","); ret = ibm->write(kernbuf); if (ret == 0) ret = count; kfree(kernbuf); return ret; } static char *next_cmd(char **cmds) { char *start = *cmds; char *end; while ((end = strchr(start, ',')) && end == start) start = end + 1; if (!end) return NULL; *end = 0; *cmds = end + 1; return start; } /**************************************************************************** **************************************************************************** * * Device model: input, hwmon and platform * **************************************************************************** ****************************************************************************/ static struct platform_device *tpacpi_pdev; static struct platform_device *tpacpi_sensors_pdev; static struct device *tpacpi_hwmon; static struct input_dev *tpacpi_inputdev; static struct mutex tpacpi_inputdev_send_mutex; static LIST_HEAD(tpacpi_all_drivers); static int tpacpi_suspend_handler(struct platform_device *pdev, pm_message_t state) { struct ibm_struct *ibm, *itmp; list_for_each_entry_safe(ibm, itmp, &tpacpi_all_drivers, all_drivers) { if (ibm->suspend) (ibm->suspend)(state); } return 0; } static int tpacpi_resume_handler(struct platform_device *pdev) { struct ibm_struct *ibm, *itmp; list_for_each_entry_safe(ibm, itmp, &tpacpi_all_drivers, all_drivers) { if (ibm->resume) (ibm->resume)(); } return 0; } static struct platform_driver tpacpi_pdriver = { .driver = { .name = TPACPI_DRVR_NAME, .owner = THIS_MODULE, }, .suspend = tpacpi_suspend_handler, .resume = tpacpi_resume_handler, }; static struct platform_driver tpacpi_hwmon_pdriver = { .driver = { .name = TPACPI_HWMON_DRVR_NAME, .owner = THIS_MODULE, }, }; /************************************************************************* * sysfs support helpers */ struct attribute_set { unsigned int members, max_members; struct attribute_group group; }; struct attribute_set_obj { struct attribute_set s; struct attribute *a; } __attribute__((packed)); static struct attribute_set *create_attr_set(unsigned int max_members, const char *name) { struct attribute_set_obj *sobj; if (max_members == 0) return NULL; /* Allocates space for implicit NULL at the end too */ sobj = kzalloc(sizeof(struct attribute_set_obj) + max_members * sizeof(struct attribute *), GFP_KERNEL); if (!sobj) return NULL; sobj->s.max_members = max_members; sobj->s.group.attrs = &sobj->a; sobj->s.group.name = name; return &sobj->s; } #define destroy_attr_set(_set) \ kfree(_set); /* not multi-threaded safe, use it in a single thread per set */ static int add_to_attr_set(struct attribute_set *s, struct attribute *attr) { if (!s || !attr) return -EINVAL; if (s->members >= s->max_members) return -ENOMEM; s->group.attrs[s->members] = attr; s->members++; return 0; } static int add_many_to_attr_set(struct attribute_set *s, struct attribute **attr, unsigned int count) { int i, res; for (i = 0; i < count; i++) { res = add_to_attr_set(s, attr[i]); if (res) return res; } return 0; } static void delete_attr_set(struct attribute_set *s, struct kobject *kobj) { sysfs_remove_group(kobj, &s->group); destroy_attr_set(s); } #define register_attr_set_with_sysfs(_attr_set, _kobj) \ sysfs_create_group(_kobj, &_attr_set->group) static int parse_strtoul(const char *buf, unsigned long max, unsigned long *value) { char *endp; while (*buf && isspace(*buf)) buf++; *value = simple_strtoul(buf, &endp, 0); while (*endp && isspace(*endp)) endp++; if (*endp || *value > max) return -EINVAL; return 0; } static int __init tpacpi_query_bcl_levels(acpi_handle handle) { struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL }; union acpi_object *obj; int rc; if (ACPI_SUCCESS(acpi_evaluate_object(handle, NULL, NULL, &buffer))) { obj = (union acpi_object *)buffer.pointer; if (!obj || (obj->type != ACPI_TYPE_PACKAGE)) { printk(TPACPI_ERR "Unknown _BCL data, " "please report this to %s\n", TPACPI_MAIL); rc = 0; } else { rc = obj->package.count; } } else { return 0; } kfree(buffer.pointer); return rc; } static acpi_status __init tpacpi_acpi_walk_find_bcl(acpi_handle handle, u32 lvl, void *context, void **rv) { char name[ACPI_PATH_SEGMENT_LENGTH]; struct acpi_buffer buffer = { sizeof(name), &name }; if (ACPI_SUCCESS(acpi_get_name(handle, ACPI_SINGLE_NAME, &buffer)) && !strncmp("_BCL", name, sizeof(name) - 1)) { BUG_ON(!rv || !*rv); **(int **)rv = tpacpi_query_bcl_levels(handle); return AE_CTRL_TERMINATE; } else { return AE_OK; } } /* * Returns 0 (no ACPI _BCL or _BCL invalid), or size of brightness map */ static int __init tpacpi_check_std_acpi_brightness_support(void) { int status; int bcl_levels = 0; void *bcl_ptr = &bcl_levels; if (!vid_handle) { TPACPI_ACPIHANDLE_INIT(vid); } if (!vid_handle) return 0; /* * Search for a _BCL method, and execute it. This is safe on all * ThinkPads, and as a side-effect, _BCL will place a Lenovo Vista * BIOS in ACPI backlight control mode. We do NOT have to care * about calling the _BCL method in an enabled video device, any * will do for our purposes. */ status = acpi_walk_namespace(ACPI_TYPE_METHOD, vid_handle, 3, tpacpi_acpi_walk_find_bcl, NULL, &bcl_ptr); if (ACPI_SUCCESS(status) && bcl_levels > 2) { tp_features.bright_acpimode = 1; return (bcl_levels - 2); } return 0; } /************************************************************************* * thinkpad-acpi driver attributes */ /* interface_version --------------------------------------------------- */ static ssize_t tpacpi_driver_interface_version_show( struct device_driver *drv, char *buf) { return snprintf(buf, PAGE_SIZE, "0x%08x\n", TPACPI_SYSFS_VERSION); } static DRIVER_ATTR(interface_version, S_IRUGO, tpacpi_driver_interface_version_show, NULL); /* debug_level --------------------------------------------------------- */ static ssize_t tpacpi_driver_debug_show(struct device_driver *drv, char *buf) { return snprintf(buf, PAGE_SIZE, "0x%04x\n", dbg_level); } static ssize_t tpacpi_driver_debug_store(struct device_driver *drv, const char *buf, size_t count) { unsigned long t; if (parse_strtoul(buf, 0xffff, &t)) return -EINVAL; dbg_level = t; return count; } static DRIVER_ATTR(debug_level, S_IWUSR | S_IRUGO, tpacpi_driver_debug_show, tpacpi_driver_debug_store); /* version ------------------------------------------------------------- */ static ssize_t tpacpi_driver_version_show(struct device_driver *drv, char *buf) { return snprintf(buf, PAGE_SIZE, "%s v%s\n", TPACPI_DESC, TPACPI_VERSION); } static DRIVER_ATTR(version, S_IRUGO, tpacpi_driver_version_show, NULL); /* --------------------------------------------------------------------- */ static struct driver_attribute *tpacpi_driver_attributes[] = { &driver_attr_debug_level, &driver_attr_version, &driver_attr_interface_version, }; static int __init tpacpi_create_driver_attributes(struct device_driver *drv) { int i, res; i = 0; res = 0; while (!res && i < ARRAY_SIZE(tpacpi_driver_attributes)) { res = driver_create_file(drv, tpacpi_driver_attributes[i]); i++; } return res; } static void tpacpi_remove_driver_attributes(struct device_driver *drv) { int i; for (i = 0; i < ARRAY_SIZE(tpacpi_driver_attributes); i++) driver_remove_file(drv, tpacpi_driver_attributes[i]); } /**************************************************************************** **************************************************************************** * * Subdrivers * **************************************************************************** ****************************************************************************/ /************************************************************************* * thinkpad-acpi init subdriver */ static int __init thinkpad_acpi_driver_init(struct ibm_init_struct *iibm) { printk(TPACPI_INFO "%s v%s\n", TPACPI_DESC, TPACPI_VERSION); printk(TPACPI_INFO "%s\n", TPACPI_URL); printk(TPACPI_INFO "ThinkPad BIOS %s, EC %s\n", (thinkpad_id.bios_version_str) ? thinkpad_id.bios_version_str : "unknown", (thinkpad_id.ec_version_str) ? thinkpad_id.ec_version_str : "unknown"); if (thinkpad_id.vendor && thinkpad_id.model_str) printk(TPACPI_INFO "%s %s, model %s\n", (thinkpad_id.vendor == PCI_VENDOR_ID_IBM) ? "IBM" : ((thinkpad_id.vendor == PCI_VENDOR_ID_LENOVO) ? "Lenovo" : "Unknown vendor"), thinkpad_id.model_str, (thinkpad_id.nummodel_str) ? thinkpad_id.nummodel_str : "unknown"); return 0; } static int thinkpad_acpi_driver_read(char *p) { int len = 0; len += sprintf(p + len, "driver:\t\t%s\n", TPACPI_DESC); len += sprintf(p + len, "version:\t%s\n", TPACPI_VERSION); return len; } static struct ibm_struct thinkpad_acpi_driver_data = { .name = "driver", .read = thinkpad_acpi_driver_read, }; /************************************************************************* * Hotkey subdriver */ enum { /* hot key scan codes (derived from ACPI DSDT) */ TP_ACPI_HOTKEYSCAN_FNF1 = 0, TP_ACPI_HOTKEYSCAN_FNF2, TP_ACPI_HOTKEYSCAN_FNF3, TP_ACPI_HOTKEYSCAN_FNF4, TP_ACPI_HOTKEYSCAN_FNF5, TP_ACPI_HOTKEYSCAN_FNF6, TP_ACPI_HOTKEYSCAN_FNF7, TP_ACPI_HOTKEYSCAN_FNF8, TP_ACPI_HOTKEYSCAN_FNF9, TP_ACPI_HOTKEYSCAN_FNF10, TP_ACPI_HOTKEYSCAN_FNF11, TP_ACPI_HOTKEYSCAN_FNF12, TP_ACPI_HOTKEYSCAN_FNBACKSPACE, TP_ACPI_HOTKEYSCAN_FNINSERT, TP_ACPI_HOTKEYSCAN_FNDELETE, TP_ACPI_HOTKEYSCAN_FNHOME, TP_ACPI_HOTKEYSCAN_FNEND, TP_ACPI_HOTKEYSCAN_FNPAGEUP, TP_ACPI_HOTKEYSCAN_FNPAGEDOWN, TP_ACPI_HOTKEYSCAN_FNSPACE, TP_ACPI_HOTKEYSCAN_VOLUMEUP, TP_ACPI_HOTKEYSCAN_VOLUMEDOWN, TP_ACPI_HOTKEYSCAN_MUTE, TP_ACPI_HOTKEYSCAN_THINKPAD, }; enum { /* Keys available through NVRAM polling */ TPACPI_HKEY_NVRAM_KNOWN_MASK = 0x00fb88c0U, TPACPI_HKEY_NVRAM_GOOD_MASK = 0x00fb8000U, }; enum { /* Positions of some of the keys in hotkey masks */ TP_ACPI_HKEY_DISPSWTCH_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNF7, TP_ACPI_HKEY_DISPXPAND_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNF8, TP_ACPI_HKEY_HIBERNATE_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNF12, TP_ACPI_HKEY_BRGHTUP_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNHOME, TP_ACPI_HKEY_BRGHTDWN_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNEND, TP_ACPI_HKEY_THNKLGHT_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNPAGEUP, TP_ACPI_HKEY_ZOOM_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNSPACE, TP_ACPI_HKEY_VOLUP_MASK = 1 << TP_ACPI_HOTKEYSCAN_VOLUMEUP, TP_ACPI_HKEY_VOLDWN_MASK = 1 << TP_ACPI_HOTKEYSCAN_VOLUMEDOWN, TP_ACPI_HKEY_MUTE_MASK = 1 << TP_ACPI_HOTKEYSCAN_MUTE, TP_ACPI_HKEY_THINKPAD_MASK = 1 << TP_ACPI_HOTKEYSCAN_THINKPAD, }; enum { /* NVRAM to ACPI HKEY group map */ TP_NVRAM_HKEY_GROUP_HK2 = TP_ACPI_HKEY_THINKPAD_MASK | TP_ACPI_HKEY_ZOOM_MASK | TP_ACPI_HKEY_DISPSWTCH_MASK | TP_ACPI_HKEY_HIBERNATE_MASK, TP_NVRAM_HKEY_GROUP_BRIGHTNESS = TP_ACPI_HKEY_BRGHTUP_MASK | TP_ACPI_HKEY_BRGHTDWN_MASK, TP_NVRAM_HKEY_GROUP_VOLUME = TP_ACPI_HKEY_VOLUP_MASK | TP_ACPI_HKEY_VOLDWN_MASK | TP_ACPI_HKEY_MUTE_MASK, }; #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL struct tp_nvram_state { u16 thinkpad_toggle:1; u16 zoom_toggle:1; u16 display_toggle:1; u16 thinklight_toggle:1; u16 hibernate_toggle:1; u16 displayexp_toggle:1; u16 display_state:1; u16 brightness_toggle:1; u16 volume_toggle:1; u16 mute:1; u8 brightness_level; u8 volume_level; }; static struct task_struct *tpacpi_hotkey_task; static u32 hotkey_source_mask; /* bit mask 0=ACPI,1=NVRAM */ static int hotkey_poll_freq = 10; /* Hz */ static struct mutex hotkey_thread_mutex; static struct mutex hotkey_thread_data_mutex; static unsigned int hotkey_config_change; #else /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */ #define hotkey_source_mask 0U #endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */ static struct mutex hotkey_mutex; static enum { /* Reasons for waking up */ TP_ACPI_WAKEUP_NONE = 0, /* None or unknown */ TP_ACPI_WAKEUP_BAYEJ, /* Bay ejection request */ TP_ACPI_WAKEUP_UNDOCK, /* Undock request */ } hotkey_wakeup_reason; static int hotkey_autosleep_ack; static int hotkey_orig_status; static u32 hotkey_orig_mask; static u32 hotkey_all_mask; static u32 hotkey_reserved_mask; static u32 hotkey_mask; static unsigned int hotkey_report_mode; static u16 *hotkey_keycode_map; static struct attribute_set *hotkey_dev_attributes; #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL #define HOTKEY_CONFIG_CRITICAL_START \ do { \ mutex_lock(&hotkey_thread_data_mutex); \ hotkey_config_change++; \ } while (0); #define HOTKEY_CONFIG_CRITICAL_END \ mutex_unlock(&hotkey_thread_data_mutex); #else #define HOTKEY_CONFIG_CRITICAL_START #define HOTKEY_CONFIG_CRITICAL_END #endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */ /* HKEY.MHKG() return bits */ #define TP_HOTKEY_TABLET_MASK (1 << 3) static int hotkey_get_wlsw(int *status) { if (!acpi_evalf(hkey_handle, status, "WLSW", "d")) return -EIO; return 0; } static int hotkey_get_tablet_mode(int *status) { int s; if (!acpi_evalf(hkey_handle, &s, "MHKG", "d")) return -EIO; *status = ((s & TP_HOTKEY_TABLET_MASK) != 0); return 0; } /* * Call with hotkey_mutex held */ static int hotkey_mask_get(void) { u32 m = 0; if (tp_features.hotkey_mask) { if (!acpi_evalf(hkey_handle, &m, "DHKN", "d")) return -EIO; } hotkey_mask = m | (hotkey_source_mask & hotkey_mask); return 0; } /* * Call with hotkey_mutex held */ static int hotkey_mask_set(u32 mask) { int i; int rc = 0; if (tp_features.hotkey_mask) { if (!tp_warned.hotkey_mask_ff && (mask == 0xffff || mask == 0xffffff || mask == 0xffffffff)) { tp_warned.hotkey_mask_ff = 1; printk(TPACPI_NOTICE "setting the hotkey mask to 0x%08x is likely " "not the best way to go about it\n", mask); printk(TPACPI_NOTICE "please consider using the driver defaults, " "and refer to up-to-date thinkpad-acpi " "documentation\n"); } HOTKEY_CONFIG_CRITICAL_START for (i = 0; i < 32; i++) { u32 m = 1 << i; /* enable in firmware mask only keys not in NVRAM * mode, but enable the key in the cached hotkey_mask * regardless of mode, or the key will end up * disabled by hotkey_mask_get() */ if (!acpi_evalf(hkey_handle, NULL, "MHKM", "vdd", i + 1, !!((mask & ~hotkey_source_mask) & m))) { rc = -EIO; break; } else { hotkey_mask = (hotkey_mask & ~m) | (mask & m); } } HOTKEY_CONFIG_CRITICAL_END /* hotkey_mask_get must be called unconditionally below */ if (!hotkey_mask_get() && !rc && (hotkey_mask & ~hotkey_source_mask) != (mask & ~hotkey_source_mask)) { printk(TPACPI_NOTICE "requested hot key mask 0x%08x, but " "firmware forced it to 0x%08x\n", mask, hotkey_mask); } } else { #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL HOTKEY_CONFIG_CRITICAL_START hotkey_mask = mask & hotkey_source_mask; HOTKEY_CONFIG_CRITICAL_END hotkey_mask_get(); if (hotkey_mask != mask) { printk(TPACPI_NOTICE "requested hot key mask 0x%08x, " "forced to 0x%08x (NVRAM poll mask is " "0x%08x): no firmware mask support\n", mask, hotkey_mask, hotkey_source_mask); } #else hotkey_mask_get(); rc = -ENXIO; #endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */ } return rc; } static int hotkey_status_get(int *status) { if (!acpi_evalf(hkey_handle, status, "DHKC", "d")) return -EIO; return 0; } static int hotkey_status_set(int status) { if (!acpi_evalf(hkey_handle, NULL, "MHKC", "vd", status)) return -EIO; return 0; } static void tpacpi_input_send_radiosw(void) { int wlsw; if (tp_features.hotkey_wlsw && !hotkey_get_wlsw(&wlsw)) { mutex_lock(&tpacpi_inputdev_send_mutex); input_report_switch(tpacpi_inputdev, SW_RFKILL_ALL, !!wlsw); input_sync(tpacpi_inputdev); mutex_unlock(&tpacpi_inputdev_send_mutex); } } static void tpacpi_input_send_tabletsw(void) { int state; if (tp_features.hotkey_tablet && !hotkey_get_tablet_mode(&state)) { mutex_lock(&tpacpi_inputdev_send_mutex); input_report_switch(tpacpi_inputdev, SW_TABLET_MODE, !!state); input_sync(tpacpi_inputdev); mutex_unlock(&tpacpi_inputdev_send_mutex); } } static void tpacpi_input_send_key(unsigned int scancode) { unsigned int keycode; keycode = hotkey_keycode_map[scancode]; if (keycode != KEY_RESERVED) { mutex_lock(&tpacpi_inputdev_send_mutex); input_report_key(tpacpi_inputdev, keycode, 1); if (keycode == KEY_UNKNOWN) input_event(tpacpi_inputdev, EV_MSC, MSC_SCAN, scancode); input_sync(tpacpi_inputdev); input_report_key(tpacpi_inputdev, keycode, 0); if (keycode == KEY_UNKNOWN) input_event(tpacpi_inputdev, EV_MSC, MSC_SCAN, scancode); input_sync(tpacpi_inputdev); mutex_unlock(&tpacpi_inputdev_send_mutex); } } #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL static struct tp_acpi_drv_struct ibm_hotkey_acpidriver; static void tpacpi_hotkey_send_key(unsigned int scancode) { tpacpi_input_send_key(scancode); if (hotkey_report_mode < 2) { acpi_bus_generate_proc_event(ibm_hotkey_acpidriver.device, 0x80, 0x1001 + scancode); } } static void hotkey_read_nvram(struct tp_nvram_state *n, u32 m) { u8 d; if (m & TP_NVRAM_HKEY_GROUP_HK2) { d = nvram_read_byte(TP_NVRAM_ADDR_HK2); n->thinkpad_toggle = !!(d & TP_NVRAM_MASK_HKT_THINKPAD); n->zoom_toggle = !!(d & TP_NVRAM_MASK_HKT_ZOOM); n->display_toggle = !!(d & TP_NVRAM_MASK_HKT_DISPLAY); n->hibernate_toggle = !!(d & TP_NVRAM_MASK_HKT_HIBERNATE); } if (m & TP_ACPI_HKEY_THNKLGHT_MASK) { d = nvram_read_byte(TP_NVRAM_ADDR_THINKLIGHT); n->thinklight_toggle = !!(d & TP_NVRAM_MASK_THINKLIGHT); } if (m & TP_ACPI_HKEY_DISPXPAND_MASK) { d = nvram_read_byte(TP_NVRAM_ADDR_VIDEO); n->displayexp_toggle = !!(d & TP_NVRAM_MASK_HKT_DISPEXPND); } if (m & TP_NVRAM_HKEY_GROUP_BRIGHTNESS) { d = nvram_read_byte(TP_NVRAM_ADDR_BRIGHTNESS); n->brightness_level = (d & TP_NVRAM_MASK_LEVEL_BRIGHTNESS) >> TP_NVRAM_POS_LEVEL_BRIGHTNESS; n->brightness_toggle = !!(d & TP_NVRAM_MASK_HKT_BRIGHTNESS); } if (m & TP_NVRAM_HKEY_GROUP_VOLUME) { d = nvram_read_byte(TP_NVRAM_ADDR_MIXER); n->volume_level = (d & TP_NVRAM_MASK_LEVEL_VOLUME) >> TP_NVRAM_POS_LEVEL_VOLUME; n->mute = !!(d & TP_NVRAM_MASK_MUTE); n->volume_toggle = !!(d & TP_NVRAM_MASK_HKT_VOLUME); } } #define TPACPI_COMPARE_KEY(__scancode, __member) \ do { \ if ((mask & (1 << __scancode)) && \ oldn->__member != newn->__member) \ tpacpi_hotkey_send_key(__scancode); \ } while (0) #define TPACPI_MAY_SEND_KEY(__scancode) \ do { if (mask & (1 << __scancode)) \ tpacpi_hotkey_send_key(__scancode); } while (0) static void hotkey_compare_and_issue_event(struct tp_nvram_state *oldn, struct tp_nvram_state *newn, u32 mask) { TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_THINKPAD, thinkpad_toggle); TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNSPACE, zoom_toggle); TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNF7, display_toggle); TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNF12, hibernate_toggle); TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNPAGEUP, thinklight_toggle); TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNF8, displayexp_toggle); /* handle volume */ if (oldn->volume_toggle != newn->volume_toggle) { if (oldn->mute != newn->mute) { TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_MUTE); } if (oldn->volume_level > newn->volume_level) { TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEDOWN); } else if (oldn->volume_level < newn->volume_level) { TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEUP); } else if (oldn->mute == newn->mute) { /* repeated key presses that didn't change state */ if (newn->mute) { TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_MUTE); } else if (newn->volume_level != 0) { TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEUP); } else { TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEDOWN); } } } /* handle brightness */ if (oldn->brightness_toggle != newn->brightness_toggle) { if (oldn->brightness_level < newn->brightness_level) { TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNHOME); } else if (oldn->brightness_level > newn->brightness_level) { TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNEND); } else { /* repeated key presses that didn't change state */ if (newn->brightness_level != 0) { TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNHOME); } else { TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNEND); } } } } #undef TPACPI_COMPARE_KEY #undef TPACPI_MAY_SEND_KEY static int hotkey_kthread(void *data) { struct tp_nvram_state s[2]; u32 mask; unsigned int si, so; unsigned long t; unsigned int change_detector, must_reset; mutex_lock(&hotkey_thread_mutex); if (tpacpi_lifecycle == TPACPI_LIFE_EXITING) goto exit; set_freezable(); so = 0; si = 1; t = 0; /* Initial state for compares */ mutex_lock(&hotkey_thread_data_mutex); change_detector = hotkey_config_change; mask = hotkey_source_mask & hotkey_mask; mutex_unlock(&hotkey_thread_data_mutex); hotkey_read_nvram(&s[so], mask); while (!kthread_should_stop() && hotkey_poll_freq) { if (t == 0) t = 1000/hotkey_poll_freq; t = msleep_interruptible(t); if (unlikely(kthread_should_stop())) break; must_reset = try_to_freeze(); if (t > 0 && !must_reset) continue; mutex_lock(&hotkey_thread_data_mutex); if (must_reset || hotkey_config_change != change_detector) { /* forget old state on thaw or config change */ si = so; t = 0; change_detector = hotkey_config_change; } mask = hotkey_source_mask & hotkey_mask; mutex_unlock(&hotkey_thread_data_mutex); if (likely(mask)) { hotkey_read_nvram(&s[si], mask); if (likely(si != so)) { hotkey_compare_and_issue_event(&s[so], &s[si], mask); } } so = si; si ^= 1; } exit: mutex_unlock(&hotkey_thread_mutex); return 0; } static void hotkey_poll_stop_sync(void) { if (tpacpi_hotkey_task) { if (frozen(tpacpi_hotkey_task) || freezing(tpacpi_hotkey_task)) thaw_process(tpacpi_hotkey_task); kthread_stop(tpacpi_hotkey_task); tpacpi_hotkey_task = NULL; mutex_lock(&hotkey_thread_mutex); /* at this point, the thread did exit */ mutex_unlock(&hotkey_thread_mutex); } } /* call with hotkey_mutex held */ static void hotkey_poll_setup(int may_warn) { if ((hotkey_source_mask & hotkey_mask) != 0 && hotkey_poll_freq > 0 && (tpacpi_inputdev->users > 0 || hotkey_report_mode < 2)) { if (!tpacpi_hotkey_task) { tpacpi_hotkey_task = kthread_run(hotkey_kthread, NULL, TPACPI_NVRAM_KTHREAD_NAME); if (IS_ERR(tpacpi_hotkey_task)) { tpacpi_hotkey_task = NULL; printk(TPACPI_ERR "could not create kernel thread " "for hotkey polling\n"); } } } else { hotkey_poll_stop_sync(); if (may_warn && hotkey_source_mask != 0 && hotkey_poll_freq == 0) { printk(TPACPI_NOTICE "hot keys 0x%08x require polling, " "which is currently disabled\n", hotkey_source_mask); } } } static void hotkey_poll_setup_safe(int may_warn) { mutex_lock(&hotkey_mutex); hotkey_poll_setup(may_warn); mutex_unlock(&hotkey_mutex); } #else /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */ static void hotkey_poll_setup_safe(int __unused) { } #endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */ static int hotkey_inputdev_open(struct input_dev *dev) { switch (tpacpi_lifecycle) { case TPACPI_LIFE_INIT: /* * hotkey_init will call hotkey_poll_setup_safe * at the appropriate moment */ return 0; case TPACPI_LIFE_EXITING: return -EBUSY; case TPACPI_LIFE_RUNNING: hotkey_poll_setup_safe(0); return 0; } /* Should only happen if tpacpi_lifecycle is corrupt */ BUG(); return -EBUSY; } static void hotkey_inputdev_close(struct input_dev *dev) { /* disable hotkey polling when possible */ if (tpacpi_lifecycle == TPACPI_LIFE_RUNNING) hotkey_poll_setup_safe(0); } /* sysfs hotkey enable ------------------------------------------------- */ static ssize_t hotkey_enable_show(struct device *dev, struct device_attribute *attr, char *buf) { int res, status; res = hotkey_status_get(&status); if (res) return res; return snprintf(buf, PAGE_SIZE, "%d\n", status); } static ssize_t hotkey_enable_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { unsigned long t; int res; if (parse_strtoul(buf, 1, &t)) return -EINVAL; res = hotkey_status_set(t); return (res) ? res : count; } static struct device_attribute dev_attr_hotkey_enable = __ATTR(hotkey_enable, S_IWUSR | S_IRUGO, hotkey_enable_show, hotkey_enable_store); /* sysfs hotkey mask --------------------------------------------------- */ static ssize_t hotkey_mask_show(struct device *dev, struct device_attribute *attr, char *buf) { int res; if (mutex_lock_interruptible(&hotkey_mutex)) return -ERESTARTSYS; res = hotkey_mask_get(); mutex_unlock(&hotkey_mutex); return (res)? res : snprintf(buf, PAGE_SIZE, "0x%08x\n", hotkey_mask); } static ssize_t hotkey_mask_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { unsigned long t; int res; if (parse_strtoul(buf, 0xffffffffUL, &t)) return -EINVAL; if (mutex_lock_interruptible(&hotkey_mutex)) return -ERESTARTSYS; res = hotkey_mask_set(t); #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL hotkey_poll_setup(1); #endif mutex_unlock(&hotkey_mutex); return (res) ? res : count; } static struct device_attribute dev_attr_hotkey_mask = __ATTR(hotkey_mask, S_IWUSR | S_IRUGO, hotkey_mask_show, hotkey_mask_store); /* sysfs hotkey bios_enabled ------------------------------------------- */ static ssize_t hotkey_bios_enabled_show(struct device *dev, struct device_attribute *attr, char *buf) { return snprintf(buf, PAGE_SIZE, "%d\n", hotkey_orig_status); } static struct device_attribute dev_attr_hotkey_bios_enabled = __ATTR(hotkey_bios_enabled, S_IRUGO, hotkey_bios_enabled_show, NULL); /* sysfs hotkey bios_mask ---------------------------------------------- */ static ssize_t hotkey_bios_mask_show(struct device *dev, struct device_attribute *attr, char *buf) { return snprintf(buf, PAGE_SIZE, "0x%08x\n", hotkey_orig_mask); } static struct device_attribute dev_attr_hotkey_bios_mask = __ATTR(hotkey_bios_mask, S_IRUGO, hotkey_bios_mask_show, NULL); /* sysfs hotkey all_mask ----------------------------------------------- */ static ssize_t hotkey_all_mask_show(struct device *dev, struct device_attribute *attr, char *buf) { return snprintf(buf, PAGE_SIZE, "0x%08x\n", hotkey_all_mask | hotkey_source_mask); } static struct device_attribute dev_attr_hotkey_all_mask = __ATTR(hotkey_all_mask, S_IRUGO, hotkey_all_mask_show, NULL); /* sysfs hotkey recommended_mask --------------------------------------- */ static ssize_t hotkey_recommended_mask_show(struct device *dev, struct device_attribute *attr, char *buf) { return snprintf(buf, PAGE_SIZE, "0x%08x\n", (hotkey_all_mask | hotkey_source_mask) & ~hotkey_reserved_mask); } static struct device_attribute dev_attr_hotkey_recommended_mask = __ATTR(hotkey_recommended_mask, S_IRUGO, hotkey_recommended_mask_show, NULL); #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL /* sysfs hotkey hotkey_source_mask ------------------------------------- */ static ssize_t hotkey_source_mask_show(struct device *dev, struct device_attribute *attr, char *buf) { return snprintf(buf, PAGE_SIZE, "0x%08x\n", hotkey_source_mask); } static ssize_t hotkey_source_mask_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { unsigned long t; if (parse_strtoul(buf, 0xffffffffUL, &t) || ((t & ~TPACPI_HKEY_NVRAM_KNOWN_MASK) != 0)) return -EINVAL; if (mutex_lock_interruptible(&hotkey_mutex)) return -ERESTARTSYS; HOTKEY_CONFIG_CRITICAL_START hotkey_source_mask = t; HOTKEY_CONFIG_CRITICAL_END hotkey_poll_setup(1); mutex_unlock(&hotkey_mutex); return count; } static struct device_attribute dev_attr_hotkey_source_mask = __ATTR(hotkey_source_mask, S_IWUSR | S_IRUGO, hotkey_source_mask_show, hotkey_source_mask_store); /* sysfs hotkey hotkey_poll_freq --------------------------------------- */ static ssize_t hotkey_poll_freq_show(struct device *dev, struct device_attribute *attr, char *buf) { return snprintf(buf, PAGE_SIZE, "%d\n", hotkey_poll_freq); } static ssize_t hotkey_poll_freq_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { unsigned long t; if (parse_strtoul(buf, 25, &t)) return -EINVAL; if (mutex_lock_interruptible(&hotkey_mutex)) return -ERESTARTSYS; hotkey_poll_freq = t; hotkey_poll_setup(1); mutex_unlock(&hotkey_mutex); return count; } static struct device_attribute dev_attr_hotkey_poll_freq = __ATTR(hotkey_poll_freq, S_IWUSR | S_IRUGO, hotkey_poll_freq_show, hotkey_poll_freq_store); #endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */ /* sysfs hotkey radio_sw (pollable) ------------------------------------ */ static ssize_t hotkey_radio_sw_show(struct device *dev, struct device_attribute *attr, char *buf) { int res, s; res = hotkey_get_wlsw(&s); if (res < 0) return res; return snprintf(buf, PAGE_SIZE, "%d\n", !!s); } static struct device_attribute dev_attr_hotkey_radio_sw = __ATTR(hotkey_radio_sw, S_IRUGO, hotkey_radio_sw_show, NULL); static void hotkey_radio_sw_notify_change(void) { if (tp_features.hotkey_wlsw) sysfs_notify(&tpacpi_pdev->dev.kobj, NULL, "hotkey_radio_sw"); } /* sysfs hotkey tablet mode (pollable) --------------------------------- */ static ssize_t hotkey_tablet_mode_show(struct device *dev, struct device_attribute *attr, char *buf) { int res, s; res = hotkey_get_tablet_mode(&s); if (res < 0) return res; return snprintf(buf, PAGE_SIZE, "%d\n", !!s); } static struct device_attribute dev_attr_hotkey_tablet_mode = __ATTR(hotkey_tablet_mode, S_IRUGO, hotkey_tablet_mode_show, NULL); static void hotkey_tablet_mode_notify_change(void) { if (tp_features.hotkey_tablet) sysfs_notify(&tpacpi_pdev->dev.kobj, NULL, "hotkey_tablet_mode"); } /* sysfs hotkey report_mode -------------------------------------------- */ static ssize_t hotkey_report_mode_show(struct device *dev, struct device_attribute *attr, char *buf) { return snprintf(buf, PAGE_SIZE, "%d\n", (hotkey_report_mode != 0) ? hotkey_report_mode : 1); } static struct device_attribute dev_attr_hotkey_report_mode = __ATTR(hotkey_report_mode, S_IRUGO, hotkey_report_mode_show, NULL); /* sysfs wakeup reason (pollable) -------------------------------------- */ static ssize_t hotkey_wakeup_reason_show(struct device *dev, struct device_attribute *attr, char *buf) { return snprintf(buf, PAGE_SIZE, "%d\n", hotkey_wakeup_reason); } static struct device_attribute dev_attr_hotkey_wakeup_reason = __ATTR(wakeup_reason, S_IRUGO, hotkey_wakeup_reason_show, NULL); static void hotkey_wakeup_reason_notify_change(void) { if (tp_features.hotkey_mask) sysfs_notify(&tpacpi_pdev->dev.kobj, NULL, "wakeup_reason"); } /* sysfs wakeup hotunplug_complete (pollable) -------------------------- */ static ssize_t hotkey_wakeup_hotunplug_complete_show(struct device *dev, struct device_attribute *attr, char *buf) { return snprintf(buf, PAGE_SIZE, "%d\n", hotkey_autosleep_ack); } static struct device_attribute dev_attr_hotkey_wakeup_hotunplug_complete = __ATTR(wakeup_hotunplug_complete, S_IRUGO, hotkey_wakeup_hotunplug_complete_show, NULL); static void hotkey_wakeup_hotunplug_complete_notify_change(void) { if (tp_features.hotkey_mask) sysfs_notify(&tpacpi_pdev->dev.kobj, NULL, "wakeup_hotunplug_complete"); } /* --------------------------------------------------------------------- */ static struct attribute *hotkey_attributes[] __initdata = { &dev_attr_hotkey_enable.attr, &dev_attr_hotkey_bios_enabled.attr, &dev_attr_hotkey_report_mode.attr, #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL &dev_attr_hotkey_mask.attr, &dev_attr_hotkey_all_mask.attr, &dev_attr_hotkey_recommended_mask.attr, &dev_attr_hotkey_source_mask.attr, &dev_attr_hotkey_poll_freq.attr, #endif }; static struct attribute *hotkey_mask_attributes[] __initdata = { &dev_attr_hotkey_bios_mask.attr, #ifndef CONFIG_THINKPAD_ACPI_HOTKEY_POLL &dev_attr_hotkey_mask.attr, &dev_attr_hotkey_all_mask.attr, &dev_attr_hotkey_recommended_mask.attr, #endif &dev_attr_hotkey_wakeup_reason.attr, &dev_attr_hotkey_wakeup_hotunplug_complete.attr, }; static void hotkey_exit(void) { #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL hotkey_poll_stop_sync(); #endif if (hotkey_dev_attributes) delete_attr_set(hotkey_dev_attributes, &tpacpi_pdev->dev.kobj); kfree(hotkey_keycode_map); if (tp_features.hotkey) { dbg_printk(TPACPI_DBG_EXIT, "restoring original hot key mask\n"); /* no short-circuit boolean operator below! */ if ((hotkey_mask_set(hotkey_orig_mask) | hotkey_status_set(hotkey_orig_status)) != 0) printk(TPACPI_ERR "failed to restore hot key mask " "to BIOS defaults\n"); } } static int __init hotkey_init(struct ibm_init_struct *iibm) { /* Requirements for changing the default keymaps: * * 1. Many of the keys are mapped to KEY_RESERVED for very * good reasons. Do not change them unless you have deep * knowledge on the IBM and Lenovo ThinkPad firmware for * the various ThinkPad models. The driver behaves * differently for KEY_RESERVED: such keys have their * hot key mask *unset* in mask_recommended, and also * in the initial hot key mask programmed into the * firmware at driver load time, which means the firm- * ware may react very differently if you change them to * something else; * * 2. You must be subscribed to the linux-thinkpad and * ibm-acpi-devel mailing lists, and you should read the * list archives since 2007 if you want to change the * keymaps. This requirement exists so that you will * know the past history of problems with the thinkpad- * acpi driver keymaps, and also that you will be * listening to any bug reports; * * 3. Do not send thinkpad-acpi specific patches directly to * for merging, *ever*. Send them to the linux-acpi * mailinglist for comments. Merging is to be done only * through acpi-test and the ACPI maintainer. * * If the above is too much to ask, don't change the keymap. * Ask the thinkpad-acpi maintainer to do it, instead. */ static u16 ibm_keycode_map[] __initdata = { /* Scan Codes 0x00 to 0x0B: ACPI HKEY FN+F1..F12 */ KEY_FN_F1, KEY_FN_F2, KEY_COFFEE, KEY_SLEEP, KEY_WLAN, KEY_FN_F6, KEY_SWITCHVIDEOMODE, KEY_FN_F8, KEY_FN_F9, KEY_FN_F10, KEY_FN_F11, KEY_SUSPEND, /* Scan codes 0x0C to 0x1F: Other ACPI HKEY hot keys */ KEY_UNKNOWN, /* 0x0C: FN+BACKSPACE */ KEY_UNKNOWN, /* 0x0D: FN+INSERT */ KEY_UNKNOWN, /* 0x0E: FN+DELETE */ /* brightness: firmware always reacts to them, unless * X.org did some tricks in the radeon BIOS scratch * registers of *some* models */ KEY_RESERVED, /* 0x0F: FN+HOME (brightness up) */ KEY_RESERVED, /* 0x10: FN+END (brightness down) */ /* Thinklight: firmware always react to it */ KEY_RESERVED, /* 0x11: FN+PGUP (thinklight toggle) */ KEY_UNKNOWN, /* 0x12: FN+PGDOWN */ KEY_ZOOM, /* 0x13: FN+SPACE (zoom) */ /* Volume: firmware always react to it and reprograms * the built-in *extra* mixer. Never map it to control * another mixer by default. */ KEY_RESERVED, /* 0x14: VOLUME UP */ KEY_RESERVED, /* 0x15: VOLUME DOWN */ KEY_RESERVED, /* 0x16: MUTE */ KEY_VENDOR, /* 0x17: Thinkpad/AccessIBM/Lenovo */ /* (assignments unknown, please report if found) */ KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, }; static u16 lenovo_keycode_map[] __initdata = { /* Scan Codes 0x00 to 0x0B: ACPI HKEY FN+F1..F12 */ KEY_FN_F1, KEY_COFFEE, KEY_BATTERY, KEY_SLEEP, KEY_WLAN, KEY_FN_F6, KEY_SWITCHVIDEOMODE, KEY_FN_F8, KEY_FN_F9, KEY_FN_F10, KEY_FN_F11, KEY_SUSPEND, /* Scan codes 0x0C to 0x1F: Other ACPI HKEY hot keys */ KEY_UNKNOWN, /* 0x0C: FN+BACKSPACE */ KEY_UNKNOWN, /* 0x0D: FN+INSERT */ KEY_UNKNOWN, /* 0x0E: FN+DELETE */ /* These either have to go through ACPI video, or * act like in the IBM ThinkPads, so don't ever * enable them by default */ KEY_RESERVED, /* 0x0F: FN+HOME (brightness up) */ KEY_RESERVED, /* 0x10: FN+END (brightness down) */ KEY_RESERVED, /* 0x11: FN+PGUP (thinklight toggle) */ KEY_UNKNOWN, /* 0x12: FN+PGDOWN */ KEY_ZOOM, /* 0x13: FN+SPACE (zoom) */ /* Volume: z60/z61, T60 (BIOS version?): firmware always * react to it and reprograms the built-in *extra* mixer. * Never map it to control another mixer by default. * * T60?, T61, R60?, R61: firmware and EC tries to send * these over the regular keyboard, so these are no-ops, * but there are still weird bugs re. MUTE, so do not * change unless you get test reports from all Lenovo * models. May cause the BIOS to interfere with the * HDA mixer. */ KEY_RESERVED, /* 0x14: VOLUME UP */ KEY_RESERVED, /* 0x15: VOLUME DOWN */ KEY_RESERVED, /* 0x16: MUTE */ KEY_VENDOR, /* 0x17: Thinkpad/AccessIBM/Lenovo */ /* (assignments unknown, please report if found) */ KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, KEY_UNKNOWN, }; #define TPACPI_HOTKEY_MAP_LEN ARRAY_SIZE(ibm_keycode_map) #define TPACPI_HOTKEY_MAP_SIZE sizeof(ibm_keycode_map) #define TPACPI_HOTKEY_MAP_TYPESIZE sizeof(ibm_keycode_map[0]) int res, i; int status; int hkeyv; vdbg_printk(TPACPI_DBG_INIT, "initializing hotkey subdriver\n"); BUG_ON(!tpacpi_inputdev); BUG_ON(tpacpi_inputdev->open != NULL || tpacpi_inputdev->close != NULL); TPACPI_ACPIHANDLE_INIT(hkey); mutex_init(&hotkey_mutex); #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL mutex_init(&hotkey_thread_mutex); mutex_init(&hotkey_thread_data_mutex); #endif /* hotkey not supported on 570 */ tp_features.hotkey = hkey_handle != NULL; vdbg_printk(TPACPI_DBG_INIT, "hotkeys are %s\n", str_supported(tp_features.hotkey)); if (!tp_features.hotkey) return 1; hotkey_dev_attributes = create_attr_set(13, NULL); if (!hotkey_dev_attributes) return -ENOMEM; res = add_many_to_attr_set(hotkey_dev_attributes, hotkey_attributes, ARRAY_SIZE(hotkey_attributes)); if (res) goto err_exit; /* mask not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p, A30, R30, R31, T20-22, X20-21, X22-24. Detected by checking for HKEY interface version 0x100 */ if (acpi_evalf(hkey_handle, &hkeyv, "MHKV", "qd")) { if ((hkeyv >> 8) != 1) { printk(TPACPI_ERR "unknown version of the " "HKEY interface: 0x%x\n", hkeyv); printk(TPACPI_ERR "please report this to %s\n", TPACPI_MAIL); } else { /* * MHKV 0x100 in A31, R40, R40e, * T4x, X31, and later */ tp_features.hotkey_mask = 1; } } vdbg_printk(TPACPI_DBG_INIT, "hotkey masks are %s\n", str_supported(tp_features.hotkey_mask)); if (tp_features.hotkey_mask) { if (!acpi_evalf(hkey_handle, &hotkey_all_mask, "MHKA", "qd")) { printk(TPACPI_ERR "missing MHKA handler, " "please report this to %s\n", TPACPI_MAIL); /* FN+F12, FN+F4, FN+F3 */ hotkey_all_mask = 0x080cU; } } /* hotkey_source_mask *must* be zero for * the first hotkey_mask_get */ res = hotkey_status_get(&hotkey_orig_status); if (res) goto err_exit; if (tp_features.hotkey_mask) { res = hotkey_mask_get(); if (res) goto err_exit; hotkey_orig_mask = hotkey_mask; res = add_many_to_attr_set( hotkey_dev_attributes, hotkey_mask_attributes, ARRAY_SIZE(hotkey_mask_attributes)); if (res) goto err_exit; } #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL if (tp_features.hotkey_mask) { hotkey_source_mask = TPACPI_HKEY_NVRAM_GOOD_MASK & ~hotkey_all_mask; } else { hotkey_source_mask = TPACPI_HKEY_NVRAM_GOOD_MASK; } vdbg_printk(TPACPI_DBG_INIT, "hotkey source mask 0x%08x, polling freq %d\n", hotkey_source_mask, hotkey_poll_freq); #endif /* Not all thinkpads have a hardware radio switch */ if (acpi_evalf(hkey_handle, &status, "WLSW", "qd")) { tp_features.hotkey_wlsw = 1; printk(TPACPI_INFO "radio switch found; radios are %s\n", enabled(status, 0)); res = add_to_attr_set(hotkey_dev_attributes, &dev_attr_hotkey_radio_sw.attr); } /* For X41t, X60t, X61t Tablets... */ if (!res && acpi_evalf(hkey_handle, &status, "MHKG", "qd")) { tp_features.hotkey_tablet = 1; printk(TPACPI_INFO "possible tablet mode switch found; " "ThinkPad in %s mode\n", (status & TP_HOTKEY_TABLET_MASK)? "tablet" : "laptop"); res = add_to_attr_set(hotkey_dev_attributes, &dev_attr_hotkey_tablet_mode.attr); } if (!res) res = register_attr_set_with_sysfs( hotkey_dev_attributes, &tpacpi_pdev->dev.kobj); if (res) goto err_exit; /* Set up key map */ hotkey_keycode_map = kmalloc(TPACPI_HOTKEY_MAP_SIZE, GFP_KERNEL); if (!hotkey_keycode_map) { printk(TPACPI_ERR "failed to allocate memory for key map\n"); res = -ENOMEM; goto err_exit; } if (thinkpad_id.vendor == PCI_VENDOR_ID_LENOVO) { dbg_printk(TPACPI_DBG_INIT, "using Lenovo default hot key map\n"); memcpy(hotkey_keycode_map, &lenovo_keycode_map, TPACPI_HOTKEY_MAP_SIZE); } else { dbg_printk(TPACPI_DBG_INIT, "using IBM default hot key map\n"); memcpy(hotkey_keycode_map, &ibm_keycode_map, TPACPI_HOTKEY_MAP_SIZE); } set_bit(EV_KEY, tpacpi_inputdev->evbit); set_bit(EV_MSC, tpacpi_inputdev->evbit); set_bit(MSC_SCAN, tpacpi_inputdev->mscbit); tpacpi_inputdev->keycodesize = TPACPI_HOTKEY_MAP_TYPESIZE; tpacpi_inputdev->keycodemax = TPACPI_HOTKEY_MAP_LEN; tpacpi_inputdev->keycode = hotkey_keycode_map; for (i = 0; i < TPACPI_HOTKEY_MAP_LEN; i++) { if (hotkey_keycode_map[i] != KEY_RESERVED) { set_bit(hotkey_keycode_map[i], tpacpi_inputdev->keybit); } else { if (i < sizeof(hotkey_reserved_mask)*8) hotkey_reserved_mask |= 1 << i; } } if (tp_features.hotkey_wlsw) { set_bit(EV_SW, tpacpi_inputdev->evbit); set_bit(SW_RFKILL_ALL, tpacpi_inputdev->swbit); } if (tp_features.hotkey_tablet) { set_bit(EV_SW, tpacpi_inputdev->evbit); set_bit(SW_TABLET_MODE, tpacpi_inputdev->swbit); } /* Do not issue duplicate brightness change events to * userspace */ if (!tp_features.bright_acpimode) /* update bright_acpimode... */ tpacpi_check_std_acpi_brightness_support(); if (tp_features.bright_acpimode) { printk(TPACPI_INFO "This ThinkPad has standard ACPI backlight " "brightness control, supported by the ACPI " "video driver\n"); printk(TPACPI_NOTICE "Disabling thinkpad-acpi brightness events " "by default...\n"); /* The hotkey_reserved_mask change below is not * necessary while the keys are at KEY_RESERVED in the * default map, but better safe than sorry, leave it * here as a marker of what we have to do, especially * when we finally become able to set this at runtime * on response to X.org requests */ hotkey_reserved_mask |= (1 << TP_ACPI_HOTKEYSCAN_FNHOME) | (1 << TP_ACPI_HOTKEYSCAN_FNEND); } dbg_printk(TPACPI_DBG_INIT, "enabling hot key handling\n"); res = hotkey_status_set(1); if (res) { hotkey_exit(); return res; } res = hotkey_mask_set(((hotkey_all_mask | hotkey_source_mask) & ~hotkey_reserved_mask) | hotkey_orig_mask); if (res < 0 && res != -ENXIO) { hotkey_exit(); return res; } dbg_printk(TPACPI_DBG_INIT, "legacy hot key reporting over procfs %s\n", (hotkey_report_mode < 2) ? "enabled" : "disabled"); tpacpi_inputdev->open = &hotkey_inputdev_open; tpacpi_inputdev->close = &hotkey_inputdev_close; hotkey_poll_setup_safe(1); tpacpi_input_send_radiosw(); tpacpi_input_send_tabletsw(); return 0; err_exit: delete_attr_set(hotkey_dev_attributes, &tpacpi_pdev->dev.kobj); hotkey_dev_attributes = NULL; return (res < 0)? res : 1; } static void hotkey_notify(struct ibm_struct *ibm, u32 event) { u32 hkey; unsigned int scancode; int send_acpi_ev; int ignore_acpi_ev; int unk_ev; if (event != 0x80) { printk(TPACPI_ERR "unknown HKEY notification event %d\n", event); /* forward it to userspace, maybe it knows how to handle it */ acpi_bus_generate_netlink_event( ibm->acpi->device->pnp.device_class, ibm->acpi->device->dev.bus_id, event, 0); return; } while (1) { if (!acpi_evalf(hkey_handle, &hkey, "MHKP", "d")) { printk(TPACPI_ERR "failed to retrieve HKEY event\n"); return; } if (hkey == 0) { /* queue empty */ return; } send_acpi_ev = 1; ignore_acpi_ev = 0; unk_ev = 0; switch (hkey >> 12) { case 1: /* 0x1000-0x1FFF: key presses */ scancode = hkey & 0xfff; if (scancode > 0 && scancode < 0x21) { scancode--; if (!(hotkey_source_mask & (1 << scancode))) { tpacpi_input_send_key(scancode); send_acpi_ev = 0; } else { ignore_acpi_ev = 1; } } else { unk_ev = 1; } break; case 2: /* Wakeup reason */ switch (hkey) { case 0x2304: /* suspend, undock */ case 0x2404: /* hibernation, undock */ hotkey_wakeup_reason = TP_ACPI_WAKEUP_UNDOCK; ignore_acpi_ev = 1; break; case 0x2305: /* suspend, bay eject */ case 0x2405: /* hibernation, bay eject */ hotkey_wakeup_reason = TP_ACPI_WAKEUP_BAYEJ; ignore_acpi_ev = 1; break; default: unk_ev = 1; } if (hotkey_wakeup_reason != TP_ACPI_WAKEUP_NONE) { printk(TPACPI_INFO "woke up due to a hot-unplug " "request...\n"); hotkey_wakeup_reason_notify_change(); } break; case 3: /* bay-related wakeups */ if (hkey == 0x3003) { hotkey_autosleep_ack = 1; printk(TPACPI_INFO "bay ejected\n"); hotkey_wakeup_hotunplug_complete_notify_change(); } else { unk_ev = 1; } break; case 4: /* dock-related wakeups */ if (hkey == 0x4003) { hotkey_autosleep_ack = 1; printk(TPACPI_INFO "undocked\n"); hotkey_wakeup_hotunplug_complete_notify_change(); } else { unk_ev = 1; } break; case 5: /* 0x5000-0x5FFF: human interface helpers */ switch (hkey) { case 0x5010: /* Lenovo new BIOS: brightness changed */ case 0x500b: /* X61t: tablet pen inserted into bay */ case 0x500c: /* X61t: tablet pen removed from bay */ break; case 0x5009: /* X41t-X61t: swivel up (tablet mode) */ case 0x500a: /* X41t-X61t: swivel down (normal mode) */ tpacpi_input_send_tabletsw(); hotkey_tablet_mode_notify_change(); send_acpi_ev = 0; break; case 0x5001: case 0x5002: /* LID switch events. Do not propagate */ ignore_acpi_ev = 1; break; default: unk_ev = 1; } break; case 7: /* 0x7000-0x7FFF: misc */ if (tp_features.hotkey_wlsw && hkey == 0x7000) { tpacpi_input_send_radiosw(); hotkey_radio_sw_notify_change(); send_acpi_ev = 0; break; } /* fallthrough to default */ default: unk_ev = 1; } if (unk_ev) { printk(TPACPI_NOTICE "unhandled HKEY event 0x%04x\n", hkey); } /* Legacy events */ if (!ignore_acpi_ev && (send_acpi_ev || hotkey_report_mode < 2)) { acpi_bus_generate_proc_event(ibm->acpi->device, event, hkey); } /* netlink events */ if (!ignore_acpi_ev && send_acpi_ev) { acpi_bus_generate_netlink_event( ibm->acpi->device->pnp.device_class, ibm->acpi->device->dev.bus_id, event, hkey); } } } static void hotkey_suspend(pm_message_t state) { /* Do these on suspend, we get the events on early resume! */ hotkey_wakeup_reason = TP_ACPI_WAKEUP_NONE; hotkey_autosleep_ack = 0; } static void hotkey_resume(void) { if (hotkey_mask_get()) printk(TPACPI_ERR "error while trying to read hot key mask " "from firmware\n"); tpacpi_input_send_radiosw(); hotkey_radio_sw_notify_change(); hotkey_tablet_mode_notify_change(); hotkey_wakeup_reason_notify_change(); hotkey_wakeup_hotunplug_complete_notify_change(); hotkey_poll_setup_safe(0); } /* procfs -------------------------------------------------------------- */ static int hotkey_read(char *p) { int res, status; int len = 0; if (!tp_features.hotkey) { len += sprintf(p + len, "status:\t\tnot supported\n"); return len; } if (mutex_lock_interruptible(&hotkey_mutex)) return -ERESTARTSYS; res = hotkey_status_get(&status); if (!res) res = hotkey_mask_get(); mutex_unlock(&hotkey_mutex); if (res) return res; len += sprintf(p + len, "status:\t\t%s\n", enabled(status, 0)); if (tp_features.hotkey_mask) { len += sprintf(p + len, "mask:\t\t0x%08x\n", hotkey_mask); len += sprintf(p + len, "commands:\tenable, disable, reset, \n"); } else { len += sprintf(p + len, "mask:\t\tnot supported\n"); len += sprintf(p + len, "commands:\tenable, disable, reset\n"); } return len; } static int hotkey_write(char *buf) { int res, status; u32 mask; char *cmd; if (!tp_features.hotkey) return -ENODEV; if (mutex_lock_interruptible(&hotkey_mutex)) return -ERESTARTSYS; status = -1; mask = hotkey_mask; res = 0; while ((cmd = next_cmd(&buf))) { if (strlencmp(cmd, "enable") == 0) { status = 1; } else if (strlencmp(cmd, "disable") == 0) { status = 0; } else if (strlencmp(cmd, "reset") == 0) { status = hotkey_orig_status; mask = hotkey_orig_mask; } else if (sscanf(cmd, "0x%x", &mask) == 1) { /* mask set */ } else if (sscanf(cmd, "%x", &mask) == 1) { /* mask set */ } else { res = -EINVAL; goto errexit; } } if (status != -1) res = hotkey_status_set(status); if (!res && mask != hotkey_mask) res = hotkey_mask_set(mask); errexit: mutex_unlock(&hotkey_mutex); return res; } static const struct acpi_device_id ibm_htk_device_ids[] = { {TPACPI_ACPI_HKEY_HID, 0}, {"", 0}, }; static struct tp_acpi_drv_struct ibm_hotkey_acpidriver = { .hid = ibm_htk_device_ids, .notify = hotkey_notify, .handle = &hkey_handle, .type = ACPI_DEVICE_NOTIFY, }; static struct ibm_struct hotkey_driver_data = { .name = "hotkey", .read = hotkey_read, .write = hotkey_write, .exit = hotkey_exit, .resume = hotkey_resume, .suspend = hotkey_suspend, .acpi = &ibm_hotkey_acpidriver, }; /************************************************************************* * Bluetooth subdriver */ enum { /* ACPI GBDC/SBDC bits */ TP_ACPI_BLUETOOTH_HWPRESENT = 0x01, /* Bluetooth hw available */ TP_ACPI_BLUETOOTH_RADIOSSW = 0x02, /* Bluetooth radio enabled */ TP_ACPI_BLUETOOTH_UNK = 0x04, /* unknown function */ }; static int bluetooth_get_radiosw(void); static int bluetooth_set_radiosw(int radio_on); /* sysfs bluetooth enable ---------------------------------------------- */ static ssize_t bluetooth_enable_show(struct device *dev, struct device_attribute *attr, char *buf) { int status; status = bluetooth_get_radiosw(); if (status < 0) return status; return snprintf(buf, PAGE_SIZE, "%d\n", status ? 1 : 0); } static ssize_t bluetooth_enable_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { unsigned long t; int res; if (parse_strtoul(buf, 1, &t)) return -EINVAL; res = bluetooth_set_radiosw(t); return (res) ? res : count; } static struct device_attribute dev_attr_bluetooth_enable = __ATTR(bluetooth_enable, S_IWUSR | S_IRUGO, bluetooth_enable_show, bluetooth_enable_store); /* --------------------------------------------------------------------- */ static struct attribute *bluetooth_attributes[] = { &dev_attr_bluetooth_enable.attr, NULL }; static const struct attribute_group bluetooth_attr_group = { .attrs = bluetooth_attributes, }; static int __init bluetooth_init(struct ibm_init_struct *iibm) { int res; int status = 0; vdbg_printk(TPACPI_DBG_INIT, "initializing bluetooth subdriver\n"); TPACPI_ACPIHANDLE_INIT(hkey); /* bluetooth not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p, G4x, R30, R31, R40e, R50e, T20-22, X20-21 */ tp_features.bluetooth = hkey_handle && acpi_evalf(hkey_handle, &status, "GBDC", "qd"); vdbg_printk(TPACPI_DBG_INIT, "bluetooth is %s, status 0x%02x\n", str_supported(tp_features.bluetooth), status); if (tp_features.bluetooth) { if (!(status & TP_ACPI_BLUETOOTH_HWPRESENT)) { /* no bluetooth hardware present in system */ tp_features.bluetooth = 0; dbg_printk(TPACPI_DBG_INIT, "bluetooth hardware not installed\n"); } else { res = sysfs_create_group(&tpacpi_pdev->dev.kobj, &bluetooth_attr_group); if (res) return res; } } return (tp_features.bluetooth)? 0 : 1; } static void bluetooth_exit(void) { sysfs_remove_group(&tpacpi_pdev->dev.kobj, &bluetooth_attr_group); } static int bluetooth_get_radiosw(void) { int status; if (!tp_features.bluetooth) return -ENODEV; if (!acpi_evalf(hkey_handle, &status, "GBDC", "d")) return -EIO; return ((status & TP_ACPI_BLUETOOTH_RADIOSSW) != 0); } static int bluetooth_set_radiosw(int radio_on) { int status; if (!tp_features.bluetooth) return -ENODEV; if (!acpi_evalf(hkey_handle, &status, "GBDC", "d")) return -EIO; if (radio_on) status |= TP_ACPI_BLUETOOTH_RADIOSSW; else status &= ~TP_ACPI_BLUETOOTH_RADIOSSW; if (!acpi_evalf(hkey_handle, NULL, "SBDC", "vd", status)) return -EIO; return 0; } /* procfs -------------------------------------------------------------- */ static int bluetooth_read(char *p) { int len = 0; int status = bluetooth_get_radiosw(); if (!tp_features.bluetooth) len += sprintf(p + len, "status:\t\tnot supported\n"); else { len += sprintf(p + len, "status:\t\t%s\n", (status)? "enabled" : "disabled"); len += sprintf(p + len, "commands:\tenable, disable\n"); } return len; } static int bluetooth_write(char *buf) { char *cmd; if (!tp_features.bluetooth) return -ENODEV; while ((cmd = next_cmd(&buf))) { if (strlencmp(cmd, "enable") == 0) { bluetooth_set_radiosw(1); } else if (strlencmp(cmd, "disable") == 0) { bluetooth_set_radiosw(0); } else return -EINVAL; } return 0; } static struct ibm_struct bluetooth_driver_data = { .name = "bluetooth", .read = bluetooth_read, .write = bluetooth_write, .exit = bluetooth_exit, }; /************************************************************************* * Wan subdriver */ enum { /* ACPI GWAN/SWAN bits */ TP_ACPI_WANCARD_HWPRESENT = 0x01, /* Wan hw available */ TP_ACPI_WANCARD_RADIOSSW = 0x02, /* Wan radio enabled */ TP_ACPI_WANCARD_UNK = 0x04, /* unknown function */ }; static int wan_get_radiosw(void); static int wan_set_radiosw(int radio_on); /* sysfs wan enable ---------------------------------------------------- */ static ssize_t wan_enable_show(struct device *dev, struct device_attribute *attr, char *buf) { int status; status = wan_get_radiosw(); if (status < 0) return status; return snprintf(buf, PAGE_SIZE, "%d\n", status ? 1 : 0); } static ssize_t wan_enable_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { unsigned long t; int res; if (parse_strtoul(buf, 1, &t)) return -EINVAL; res = wan_set_radiosw(t); return (res) ? res : count; } static struct device_attribute dev_attr_wan_enable = __ATTR(wwan_enable, S_IWUSR | S_IRUGO, wan_enable_show, wan_enable_store); /* --------------------------------------------------------------------- */ static struct attribute *wan_attributes[] = { &dev_attr_wan_enable.attr, NULL }; static const struct attribute_group wan_attr_group = { .attrs = wan_attributes, }; static int __init wan_init(struct ibm_init_struct *iibm) { int res; int status = 0; vdbg_printk(TPACPI_DBG_INIT, "initializing wan subdriver\n"); TPACPI_ACPIHANDLE_INIT(hkey); tp_features.wan = hkey_handle && acpi_evalf(hkey_handle, &status, "GWAN", "qd"); vdbg_printk(TPACPI_DBG_INIT, "wan is %s, status 0x%02x\n", str_supported(tp_features.wan), status); if (tp_features.wan) { if (!(status & TP_ACPI_WANCARD_HWPRESENT)) { /* no wan hardware present in system */ tp_features.wan = 0; dbg_printk(TPACPI_DBG_INIT, "wan hardware not installed\n"); } else { res = sysfs_create_group(&tpacpi_pdev->dev.kobj, &wan_attr_group); if (res) return res; } } return (tp_features.wan)? 0 : 1; } static void wan_exit(void) { sysfs_remove_group(&tpacpi_pdev->dev.kobj, &wan_attr_group); } static int wan_get_radiosw(void) { int status; if (!tp_features.wan) return -ENODEV; if (!acpi_evalf(hkey_handle, &status, "GWAN", "d")) return -EIO; return ((status & TP_ACPI_WANCARD_RADIOSSW) != 0); } static int wan_set_radiosw(int radio_on) { int status; if (!tp_features.wan) return -ENODEV; if (!acpi_evalf(hkey_handle, &status, "GWAN", "d")) return -EIO; if (radio_on) status |= TP_ACPI_WANCARD_RADIOSSW; else status &= ~TP_ACPI_WANCARD_RADIOSSW; if (!acpi_evalf(hkey_handle, NULL, "SWAN", "vd", status)) return -EIO; return 0; } /* procfs -------------------------------------------------------------- */ static int wan_read(char *p) { int len = 0; int status = wan_get_radiosw(); if (!tp_features.wan) len += sprintf(p + len, "status:\t\tnot supported\n"); else { len += sprintf(p + len, "status:\t\t%s\n", (status)? "enabled" : "disabled"); len += sprintf(p + len, "commands:\tenable, disable\n"); } return len; } static int wan_write(char *buf) { char *cmd; if (!tp_features.wan) return -ENODEV; while ((cmd = next_cmd(&buf))) { if (strlencmp(cmd, "enable") == 0) { wan_set_radiosw(1); } else if (strlencmp(cmd, "disable") == 0) { wan_set_radiosw(0); } else return -EINVAL; } return 0; } static struct ibm_struct wan_driver_data = { .name = "wan", .read = wan_read, .write = wan_write, .exit = wan_exit, .flags.experimental = 1, }; /************************************************************************* * Video subdriver */ #ifdef CONFIG_THINKPAD_ACPI_VIDEO enum video_access_mode { TPACPI_VIDEO_NONE = 0, TPACPI_VIDEO_570, /* 570 */ TPACPI_VIDEO_770, /* 600e/x, 770e, 770x */ TPACPI_VIDEO_NEW, /* all others */ }; enum { /* video status flags, based on VIDEO_570 */ TP_ACPI_VIDEO_S_LCD = 0x01, /* LCD output enabled */ TP_ACPI_VIDEO_S_CRT = 0x02, /* CRT output enabled */ TP_ACPI_VIDEO_S_DVI = 0x08, /* DVI output enabled */ }; enum { /* TPACPI_VIDEO_570 constants */ TP_ACPI_VIDEO_570_PHSCMD = 0x87, /* unknown magic constant :( */ TP_ACPI_VIDEO_570_PHSMASK = 0x03, /* PHS bits that map to * video_status_flags */ TP_ACPI_VIDEO_570_PHS2CMD = 0x8b, /* unknown magic constant :( */ TP_ACPI_VIDEO_570_PHS2SET = 0x80, /* unknown magic constant :( */ }; static enum video_access_mode video_supported; static int video_orig_autosw; static int video_autosw_get(void); static int video_autosw_set(int enable); TPACPI_HANDLE(vid2, root, "\\_SB.PCI0.AGPB.VID"); /* G41 */ static int __init video_init(struct ibm_init_struct *iibm) { int ivga; vdbg_printk(TPACPI_DBG_INIT, "initializing video subdriver\n"); TPACPI_ACPIHANDLE_INIT(vid); TPACPI_ACPIHANDLE_INIT(vid2); if (vid2_handle && acpi_evalf(NULL, &ivga, "\\IVGA", "d") && ivga) /* G41, assume IVGA doesn't change */ vid_handle = vid2_handle; if (!vid_handle) /* video switching not supported on R30, R31 */ video_supported = TPACPI_VIDEO_NONE; else if (acpi_evalf(vid_handle, &video_orig_autosw, "SWIT", "qd")) /* 570 */ video_supported = TPACPI_VIDEO_570; else if (acpi_evalf(vid_handle, &video_orig_autosw, "^VADL", "qd")) /* 600e/x, 770e, 770x */ video_supported = TPACPI_VIDEO_770; else /* all others */ video_supported = TPACPI_VIDEO_NEW; vdbg_printk(TPACPI_DBG_INIT, "video is %s, mode %d\n", str_supported(video_supported != TPACPI_VIDEO_NONE), video_supported); return (video_supported != TPACPI_VIDEO_NONE)? 0 : 1; } static void video_exit(void) { dbg_printk(TPACPI_DBG_EXIT, "restoring original video autoswitch mode\n"); if (video_autosw_set(video_orig_autosw)) printk(TPACPI_ERR "error while trying to restore original " "video autoswitch mode\n"); } static int video_outputsw_get(void) { int status = 0; int i; switch (video_supported) { case TPACPI_VIDEO_570: if (!acpi_evalf(NULL, &i, "\\_SB.PHS", "dd", TP_ACPI_VIDEO_570_PHSCMD)) return -EIO; status = i & TP_ACPI_VIDEO_570_PHSMASK; break; case TPACPI_VIDEO_770: if (!acpi_evalf(NULL, &i, "\\VCDL", "d")) return -EIO; if (i) status |= TP_ACPI_VIDEO_S_LCD; if (!acpi_evalf(NULL, &i, "\\VCDC", "d")) return -EIO; if (i) status |= TP_ACPI_VIDEO_S_CRT; break; case TPACPI_VIDEO_NEW: if (!acpi_evalf(NULL, NULL, "\\VUPS", "vd", 1) || !acpi_evalf(NULL, &i, "\\VCDC", "d")) return -EIO; if (i) status |= TP_ACPI_VIDEO_S_CRT; if (!acpi_evalf(NULL, NULL, "\\VUPS", "vd", 0) || !acpi_evalf(NULL, &i, "\\VCDL", "d")) return -EIO; if (i) status |= TP_ACPI_VIDEO_S_LCD; if (!acpi_evalf(NULL, &i, "\\VCDD", "d")) return -EIO; if (i) status |= TP_ACPI_VIDEO_S_DVI; break; default: return -ENOSYS; } return status; } static int video_outputsw_set(int status) { int autosw; int res = 0; switch (video_supported) { case TPACPI_VIDEO_570: res = acpi_evalf(NULL, NULL, "\\_SB.PHS2", "vdd", TP_ACPI_VIDEO_570_PHS2CMD, status | TP_ACPI_VIDEO_570_PHS2SET); break; case TPACPI_VIDEO_770: autosw = video_autosw_get(); if (autosw < 0) return autosw; res = video_autosw_set(1); if (res) return res; res = acpi_evalf(vid_handle, NULL, "ASWT", "vdd", status * 0x100, 0); if (!autosw && video_autosw_set(autosw)) { printk(TPACPI_ERR "video auto-switch left enabled due to error\n"); return -EIO; } break; case TPACPI_VIDEO_NEW: res = acpi_evalf(NULL, NULL, "\\VUPS", "vd", 0x80) && acpi_evalf(NULL, NULL, "\\VSDS", "vdd", status, 1); break; default: return -ENOSYS; } return (res)? 0 : -EIO; } static int video_autosw_get(void) { int autosw = 0; switch (video_supported) { case TPACPI_VIDEO_570: if (!acpi_evalf(vid_handle, &autosw, "SWIT", "d")) return -EIO; break; case TPACPI_VIDEO_770: case TPACPI_VIDEO_NEW: if (!acpi_evalf(vid_handle, &autosw, "^VDEE", "d")) return -EIO; break; default: return -ENOSYS; } return autosw & 1; } static int video_autosw_set(int enable) { if (!acpi_evalf(vid_handle, NULL, "_DOS", "vd", (enable)? 1 : 0)) return -EIO; return 0; } static int video_outputsw_cycle(void) { int autosw = video_autosw_get(); int res; if (autosw < 0) return autosw; switch (video_supported) { case TPACPI_VIDEO_570: res = video_autosw_set(1); if (res) return res; res = acpi_evalf(ec_handle, NULL, "_Q16", "v"); break; case TPACPI_VIDEO_770: case TPACPI_VIDEO_NEW: res = video_autosw_set(1); if (res) return res; res = acpi_evalf(vid_handle, NULL, "VSWT", "v"); break; default: return -ENOSYS; } if (!autosw && video_autosw_set(autosw)) { printk(TPACPI_ERR "video auto-switch left enabled due to error\n"); return -EIO; } return (res)? 0 : -EIO; } static int video_expand_toggle(void) { switch (video_supported) { case TPACPI_VIDEO_570: return acpi_evalf(ec_handle, NULL, "_Q17", "v")? 0 : -EIO; case TPACPI_VIDEO_770: return acpi_evalf(vid_handle, NULL, "VEXP", "v")? 0 : -EIO; case TPACPI_VIDEO_NEW: return acpi_evalf(NULL, NULL, "\\VEXP", "v")? 0 : -EIO; default: return -ENOSYS; } /* not reached */ } static int video_read(char *p) { int status, autosw; int len = 0; if (video_supported == TPACPI_VIDEO_NONE) { len += sprintf(p + len, "status:\t\tnot supported\n"); return len; } status = video_outputsw_get(); if (status < 0) return status; autosw = video_autosw_get(); if (autosw < 0) return autosw; len += sprintf(p + len, "status:\t\tsupported\n"); len += sprintf(p + len, "lcd:\t\t%s\n", enabled(status, 0)); len += sprintf(p + len, "crt:\t\t%s\n", enabled(status, 1)); if (video_supported == TPACPI_VIDEO_NEW) len += sprintf(p + len, "dvi:\t\t%s\n", enabled(status, 3)); len += sprintf(p + len, "auto:\t\t%s\n", enabled(autosw, 0)); len += sprintf(p + len, "commands:\tlcd_enable, lcd_disable\n"); len += sprintf(p + len, "commands:\tcrt_enable, crt_disable\n"); if (video_supported == TPACPI_VIDEO_NEW) len += sprintf(p + len, "commands:\tdvi_enable, dvi_disable\n"); len += sprintf(p + len, "commands:\tauto_enable, auto_disable\n"); len += sprintf(p + len, "commands:\tvideo_switch, expand_toggle\n"); return len; } static int video_write(char *buf) { char *cmd; int enable, disable, status; int res; if (video_supported == TPACPI_VIDEO_NONE) return -ENODEV; enable = 0; disable = 0; while ((cmd = next_cmd(&buf))) { if (strlencmp(cmd, "lcd_enable") == 0) { enable |= TP_ACPI_VIDEO_S_LCD; } else if (strlencmp(cmd, "lcd_disable") == 0) { disable |= TP_ACPI_VIDEO_S_LCD; } else if (strlencmp(cmd, "crt_enable") == 0) { enable |= TP_ACPI_VIDEO_S_CRT; } else if (strlencmp(cmd, "crt_disable") == 0) { disable |= TP_ACPI_VIDEO_S_CRT; } else if (video_supported == TPACPI_VIDEO_NEW && strlencmp(cmd, "dvi_enable") == 0) { enable |= TP_ACPI_VIDEO_S_DVI; } else if (video_supported == TPACPI_VIDEO_NEW && strlencmp(cmd, "dvi_disable") == 0) { disable |= TP_ACPI_VIDEO_S_DVI; } else if (strlencmp(cmd, "auto_enable") == 0) { res = video_autosw_set(1); if (res) return res; } else if (strlencmp(cmd, "auto_disable") == 0) { res = video_autosw_set(0); if (res) return res; } else if (strlencmp(cmd, "video_switch") == 0) { res = video_outputsw_cycle(); if (res) return res; } else if (strlencmp(cmd, "expand_toggle") == 0) { res = video_expand_toggle(); if (res) return res; } else return -EINVAL; } if (enable || disable) { status = video_outputsw_get(); if (status < 0) return status; res = video_outputsw_set((status & ~disable) | enable); if (res) return res; } return 0; } static struct ibm_struct video_driver_data = { .name = "video", .read = video_read, .write = video_write, .exit = video_exit, }; #endif /* CONFIG_THINKPAD_ACPI_VIDEO */ /************************************************************************* * Light (thinklight) subdriver */ TPACPI_HANDLE(lght, root, "\\LGHT"); /* A21e, A2xm/p, T20-22, X20-21 */ TPACPI_HANDLE(ledb, ec, "LEDB"); /* G4x */ static int light_get_status(void) { int status = 0; if (tp_features.light_status) { if (!acpi_evalf(ec_handle, &status, "KBLT", "d")) return -EIO; return (!!status); } return -ENXIO; } static int light_set_status(int status) { int rc; if (tp_features.light) { if (cmos_handle) { rc = acpi_evalf(cmos_handle, NULL, NULL, "vd", (status)? TP_CMOS_THINKLIGHT_ON : TP_CMOS_THINKLIGHT_OFF); } else { rc = acpi_evalf(lght_handle, NULL, NULL, "vd", (status)? 1 : 0); } return (rc)? 0 : -EIO; } return -ENXIO; } static void light_set_status_worker(struct work_struct *work) { struct tpacpi_led_classdev *data = container_of(work, struct tpacpi_led_classdev, work); if (likely(tpacpi_lifecycle == TPACPI_LIFE_RUNNING)) light_set_status((data->new_brightness != LED_OFF)); } static void light_sysfs_set(struct led_classdev *led_cdev, enum led_brightness brightness) { struct tpacpi_led_classdev *data = container_of(led_cdev, struct tpacpi_led_classdev, led_classdev); data->new_brightness = brightness; queue_work(tpacpi_wq, &data->work); } static enum led_brightness light_sysfs_get(struct led_classdev *led_cdev) { return (light_get_status() == 1)? LED_FULL : LED_OFF; } static struct tpacpi_led_classdev tpacpi_led_thinklight = { .led_classdev = { .name = "tpacpi::thinklight", .brightness_set = &light_sysfs_set, .brightness_get = &light_sysfs_get, } }; static int __init light_init(struct ibm_init_struct *iibm) { int rc; vdbg_printk(TPACPI_DBG_INIT, "initializing light subdriver\n"); TPACPI_ACPIHANDLE_INIT(ledb); TPACPI_ACPIHANDLE_INIT(lght); TPACPI_ACPIHANDLE_INIT(cmos); INIT_WORK(&tpacpi_led_thinklight.work, light_set_status_worker); /* light not supported on 570, 600e/x, 770e, 770x, G4x, R30, R31 */ tp_features.light = (cmos_handle || lght_handle) && !ledb_handle; if (tp_features.light) /* light status not supported on 570, 600e/x, 770e, 770x, G4x, R30, R31, R32, X20 */ tp_features.light_status = acpi_evalf(ec_handle, NULL, "KBLT", "qv"); vdbg_printk(TPACPI_DBG_INIT, "light is %s, light status is %s\n", str_supported(tp_features.light), str_supported(tp_features.light_status)); if (!tp_features.light) return 1; rc = led_classdev_register(&tpacpi_pdev->dev, &tpacpi_led_thinklight.led_classdev); if (rc < 0) { tp_features.light = 0; tp_features.light_status = 0; } else { rc = 0; } return rc; } static void light_exit(void) { led_classdev_unregister(&tpacpi_led_thinklight.led_classdev); if (work_pending(&tpacpi_led_thinklight.work)) flush_workqueue(tpacpi_wq); } static int light_read(char *p) { int len = 0; int status; if (!tp_features.light) { len += sprintf(p + len, "status:\t\tnot supported\n"); } else if (!tp_features.light_status) { len += sprintf(p + len, "status:\t\tunknown\n"); len += sprintf(p + len, "commands:\ton, off\n"); } else { status = light_get_status(); if (status < 0) return status; len += sprintf(p + len, "status:\t\t%s\n", onoff(status, 0)); len += sprintf(p + len, "commands:\ton, off\n"); } return len; } static int light_write(char *buf) { char *cmd; int newstatus = 0; if (!tp_features.light) return -ENODEV; while ((cmd = next_cmd(&buf))) { if (strlencmp(cmd, "on") == 0) { newstatus = 1; } else if (strlencmp(cmd, "off") == 0) { newstatus = 0; } else return -EINVAL; } return light_set_status(newstatus); } static struct ibm_struct light_driver_data = { .name = "light", .read = light_read, .write = light_write, .exit = light_exit, }; /************************************************************************* * Dock subdriver */ #ifdef CONFIG_THINKPAD_ACPI_DOCK static void dock_notify(struct ibm_struct *ibm, u32 event); static int dock_read(char *p); static int dock_write(char *buf); TPACPI_HANDLE(dock, root, "\\_SB.GDCK", /* X30, X31, X40 */ "\\_SB.PCI0.DOCK", /* 600e/x,770e,770x,A2xm/p,T20-22,X20-21 */ "\\_SB.PCI0.PCI1.DOCK", /* all others */ "\\_SB.PCI.ISA.SLCE", /* 570 */ ); /* A21e,G4x,R30,R31,R32,R40,R40e,R50e */ /* don't list other alternatives as we install a notify handler on the 570 */ TPACPI_HANDLE(pci, root, "\\_SB.PCI"); /* 570 */ static const struct acpi_device_id ibm_pci_device_ids[] = { {PCI_ROOT_HID_STRING, 0}, {"", 0}, }; static struct tp_acpi_drv_struct ibm_dock_acpidriver[2] = { { .notify = dock_notify, .handle = &dock_handle, .type = ACPI_SYSTEM_NOTIFY, }, { /* THIS ONE MUST NEVER BE USED FOR DRIVER AUTOLOADING. * We just use it to get notifications of dock hotplug * in very old thinkpads */ .hid = ibm_pci_device_ids, .notify = dock_notify, .handle = &pci_handle, .type = ACPI_SYSTEM_NOTIFY, }, }; static struct ibm_struct dock_driver_data[2] = { { .name = "dock", .read = dock_read, .write = dock_write, .acpi = &ibm_dock_acpidriver[0], }, { .name = "dock", .acpi = &ibm_dock_acpidriver[1], }, }; #define dock_docked() (_sta(dock_handle) & 1) static int __init dock_init(struct ibm_init_struct *iibm) { vdbg_printk(TPACPI_DBG_INIT, "initializing dock subdriver\n"); TPACPI_ACPIHANDLE_INIT(dock); vdbg_printk(TPACPI_DBG_INIT, "dock is %s\n", str_supported(dock_handle != NULL)); return (dock_handle)? 0 : 1; } static int __init dock_init2(struct ibm_init_struct *iibm) { int dock2_needed; vdbg_printk(TPACPI_DBG_INIT, "initializing dock subdriver part 2\n"); if (dock_driver_data[0].flags.acpi_driver_registered && dock_driver_data[0].flags.acpi_notify_installed) { TPACPI_ACPIHANDLE_INIT(pci); dock2_needed = (pci_handle != NULL); vdbg_printk(TPACPI_DBG_INIT, "dock PCI handler for the TP 570 is %s\n", str_supported(dock2_needed)); } else { vdbg_printk(TPACPI_DBG_INIT, "dock subdriver part 2 not required\n"); dock2_needed = 0; } return (dock2_needed)? 0 : 1; } static void dock_notify(struct ibm_struct *ibm, u32 event) { int docked = dock_docked(); int pci = ibm->acpi->hid && ibm->acpi->device && acpi_match_device_ids(ibm->acpi->device, ibm_pci_device_ids); int data; if (event == 1 && !pci) /* 570 */ data = 1; /* button */ else if (event == 1 && pci) /* 570 */ data = 3; /* dock */ else if (event == 3 && docked) data = 1; /* button */ else if (event == 3 && !docked) data = 2; /* undock */ else if (event == 0 && docked) data = 3; /* dock */ else { printk(TPACPI_ERR "unknown dock event %d, status %d\n", event, _sta(dock_handle)); data = 0; /* unknown */ } acpi_bus_generate_proc_event(ibm->acpi->device, event, data); acpi_bus_generate_netlink_event(ibm->acpi->device->pnp.device_class, ibm->acpi->device->dev.bus_id, event, data); } static int dock_read(char *p) { int len = 0; int docked = dock_docked(); if (!dock_handle) len += sprintf(p + len, "status:\t\tnot supported\n"); else if (!docked) len += sprintf(p + len, "status:\t\tundocked\n"); else { len += sprintf(p + len, "status:\t\tdocked\n"); len += sprintf(p + len, "commands:\tdock, undock\n"); } return len; } static int dock_write(char *buf) { char *cmd; if (!dock_docked()) return -ENODEV; while ((cmd = next_cmd(&buf))) { if (strlencmp(cmd, "undock") == 0) { if (!acpi_evalf(dock_handle, NULL, "_DCK", "vd", 0) || !acpi_evalf(dock_handle, NULL, "_EJ0", "vd", 1)) return -EIO; } else if (strlencmp(cmd, "dock") == 0) { if (!acpi_evalf(dock_handle, NULL, "_DCK", "vd", 1)) return -EIO; } else return -EINVAL; } return 0; } #endif /* CONFIG_THINKPAD_ACPI_DOCK */ /************************************************************************* * Bay subdriver */ #ifdef CONFIG_THINKPAD_ACPI_BAY TPACPI_HANDLE(bay, root, "\\_SB.PCI.IDE.SECN.MAST", /* 570 */ "\\_SB.PCI0.IDE0.IDES.IDSM", /* 600e/x, 770e, 770x */ "\\_SB.PCI0.SATA.SCND.MSTR", /* T60, X60, Z60 */ "\\_SB.PCI0.IDE0.SCND.MSTR", /* all others */ ); /* A21e, R30, R31 */ TPACPI_HANDLE(bay_ej, bay, "_EJ3", /* 600e/x, A2xm/p, A3x */ "_EJ0", /* all others */ ); /* 570,A21e,G4x,R30,R31,R32,R40e,R50e */ TPACPI_HANDLE(bay2, root, "\\_SB.PCI0.IDE0.PRIM.SLAV", /* A3x, R32 */ "\\_SB.PCI0.IDE0.IDEP.IDPS", /* 600e/x, 770e, 770x */ ); /* all others */ TPACPI_HANDLE(bay2_ej, bay2, "_EJ3", /* 600e/x, 770e, A3x */ "_EJ0", /* 770x */ ); /* all others */ static int __init bay_init(struct ibm_init_struct *iibm) { vdbg_printk(TPACPI_DBG_INIT, "initializing bay subdriver\n"); TPACPI_ACPIHANDLE_INIT(bay); if (bay_handle) TPACPI_ACPIHANDLE_INIT(bay_ej); TPACPI_ACPIHANDLE_INIT(bay2); if (bay2_handle) TPACPI_ACPIHANDLE_INIT(bay2_ej); tp_features.bay_status = bay_handle && acpi_evalf(bay_handle, NULL, "_STA", "qv"); tp_features.bay_status2 = bay2_handle && acpi_evalf(bay2_handle, NULL, "_STA", "qv"); tp_features.bay_eject = bay_handle && bay_ej_handle && (strlencmp(bay_ej_path, "_EJ0") == 0 || experimental); tp_features.bay_eject2 = bay2_handle && bay2_ej_handle && (strlencmp(bay2_ej_path, "_EJ0") == 0 || experimental); vdbg_printk(TPACPI_DBG_INIT, "bay 1: status %s, eject %s; bay 2: status %s, eject %s\n", str_supported(tp_features.bay_status), str_supported(tp_features.bay_eject), str_supported(tp_features.bay_status2), str_supported(tp_features.bay_eject2)); return (tp_features.bay_status || tp_features.bay_eject || tp_features.bay_status2 || tp_features.bay_eject2)? 0 : 1; } static void bay_notify(struct ibm_struct *ibm, u32 event) { acpi_bus_generate_proc_event(ibm->acpi->device, event, 0); acpi_bus_generate_netlink_event(ibm->acpi->device->pnp.device_class, ibm->acpi->device->dev.bus_id, event, 0); } #define bay_occupied(b) (_sta(b##_handle) & 1) static int bay_read(char *p) { int len = 0; int occupied = bay_occupied(bay); int occupied2 = bay_occupied(bay2); int eject, eject2; len += sprintf(p + len, "status:\t\t%s\n", tp_features.bay_status ? (occupied ? "occupied" : "unoccupied") : "not supported"); if (tp_features.bay_status2) len += sprintf(p + len, "status2:\t%s\n", occupied2 ? "occupied" : "unoccupied"); eject = tp_features.bay_eject && occupied; eject2 = tp_features.bay_eject2 && occupied2; if (eject && eject2) len += sprintf(p + len, "commands:\teject, eject2\n"); else if (eject) len += sprintf(p + len, "commands:\teject\n"); else if (eject2) len += sprintf(p + len, "commands:\teject2\n"); return len; } static int bay_write(char *buf) { char *cmd; if (!tp_features.bay_eject && !tp_features.bay_eject2) return -ENODEV; while ((cmd = next_cmd(&buf))) { if (tp_features.bay_eject && strlencmp(cmd, "eject") == 0) { if (!acpi_evalf(bay_ej_handle, NULL, NULL, "vd", 1)) return -EIO; } else if (tp_features.bay_eject2 && strlencmp(cmd, "eject2") == 0) { if (!acpi_evalf(bay2_ej_handle, NULL, NULL, "vd", 1)) return -EIO; } else return -EINVAL; } return 0; } static struct tp_acpi_drv_struct ibm_bay_acpidriver = { .notify = bay_notify, .handle = &bay_handle, .type = ACPI_SYSTEM_NOTIFY, }; static struct ibm_struct bay_driver_data = { .name = "bay", .read = bay_read, .write = bay_write, .acpi = &ibm_bay_acpidriver, }; #endif /* CONFIG_THINKPAD_ACPI_BAY */ /************************************************************************* * CMOS subdriver */ /* sysfs cmos_command -------------------------------------------------- */ static ssize_t cmos_command_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { unsigned long cmos_cmd; int res; if (parse_strtoul(buf, 21, &cmos_cmd)) return -EINVAL; res = issue_thinkpad_cmos_command(cmos_cmd); return (res)? res : count; } static struct device_attribute dev_attr_cmos_command = __ATTR(cmos_command, S_IWUSR, NULL, cmos_command_store); /* --------------------------------------------------------------------- */ static int __init cmos_init(struct ibm_init_struct *iibm) { int res; vdbg_printk(TPACPI_DBG_INIT, "initializing cmos commands subdriver\n"); TPACPI_ACPIHANDLE_INIT(cmos); vdbg_printk(TPACPI_DBG_INIT, "cmos commands are %s\n", str_supported(cmos_handle != NULL)); res = device_create_file(&tpacpi_pdev->dev, &dev_attr_cmos_command); if (res) return res; return (cmos_handle)? 0 : 1; } static void cmos_exit(void) { device_remove_file(&tpacpi_pdev->dev, &dev_attr_cmos_command); } static int cmos_read(char *p) { int len = 0; /* cmos not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p, R30, R31, T20-22, X20-21 */ if (!cmos_handle) len += sprintf(p + len, "status:\t\tnot supported\n"); else { len += sprintf(p + len, "status:\t\tsupported\n"); len += sprintf(p + len, "commands:\t ( is 0-21)\n"); } return len; } static int cmos_write(char *buf) { char *cmd; int cmos_cmd, res; while ((cmd = next_cmd(&buf))) { if (sscanf(cmd, "%u", &cmos_cmd) == 1 && cmos_cmd >= 0 && cmos_cmd <= 21) { /* cmos_cmd set */ } else return -EINVAL; res = issue_thinkpad_cmos_command(cmos_cmd); if (res) return res; } return 0; } static struct ibm_struct cmos_driver_data = { .name = "cmos", .read = cmos_read, .write = cmos_write, .exit = cmos_exit, }; /************************************************************************* * LED subdriver */ enum led_access_mode { TPACPI_LED_NONE = 0, TPACPI_LED_570, /* 570 */ TPACPI_LED_OLD, /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20-21 */ TPACPI_LED_NEW, /* all others */ }; enum { /* For TPACPI_LED_OLD */ TPACPI_LED_EC_HLCL = 0x0c, /* EC reg to get led to power on */ TPACPI_LED_EC_HLBL = 0x0d, /* EC reg to blink a lit led */ TPACPI_LED_EC_HLMS = 0x0e, /* EC reg to select led to command */ }; enum led_status_t { TPACPI_LED_OFF = 0, TPACPI_LED_ON, TPACPI_LED_BLINK, }; static enum led_access_mode led_supported; TPACPI_HANDLE(led, ec, "SLED", /* 570 */ "SYSL", /* 600e/x, 770e, 770x, A21e, A2xm/p, */ /* T20-22, X20-21 */ "LED", /* all others */ ); /* R30, R31 */ #define TPACPI_LED_NUMLEDS 8 static struct tpacpi_led_classdev *tpacpi_leds; static enum led_status_t tpacpi_led_state_cache[TPACPI_LED_NUMLEDS]; static const char * const tpacpi_led_names[TPACPI_LED_NUMLEDS] = { /* there's a limit of 19 chars + NULL before 2.6.26 */ "tpacpi::power", "tpacpi:orange:batt", "tpacpi:green:batt", "tpacpi::dock_active", "tpacpi::bay_active", "tpacpi::dock_batt", "tpacpi::unknown_led", "tpacpi::standby", }; static int led_get_status(const unsigned int led) { int status; enum led_status_t led_s; switch (led_supported) { case TPACPI_LED_570: if (!acpi_evalf(ec_handle, &status, "GLED", "dd", 1 << led)) return -EIO; led_s = (status == 0)? TPACPI_LED_OFF : ((status == 1)? TPACPI_LED_ON : TPACPI_LED_BLINK); tpacpi_led_state_cache[led] = led_s; return led_s; default: return -ENXIO; } /* not reached */ } static int led_set_status(const unsigned int led, const enum led_status_t ledstatus) { /* off, on, blink. Index is led_status_t */ static const unsigned int led_sled_arg1[] = { 0, 1, 3 }; static const unsigned int led_led_arg1[] = { 0, 0x80, 0xc0 }; int rc = 0; switch (led_supported) { case TPACPI_LED_570: /* 570 */ if (led > 7) return -EINVAL; if (!acpi_evalf(led_handle, NULL, NULL, "vdd", (1 << led), led_sled_arg1[ledstatus])) rc = -EIO; break; case TPACPI_LED_OLD: /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20 */ if (led > 7) return -EINVAL; rc = ec_write(TPACPI_LED_EC_HLMS, (1 << led)); if (rc >= 0) rc = ec_write(TPACPI_LED_EC_HLBL, (ledstatus == TPACPI_LED_BLINK) << led); if (rc >= 0) rc = ec_write(TPACPI_LED_EC_HLCL, (ledstatus != TPACPI_LED_OFF) << led); break; case TPACPI_LED_NEW: /* all others */ if (!acpi_evalf(led_handle, NULL, NULL, "vdd", led, led_led_arg1[ledstatus])) rc = -EIO; break; default: rc = -ENXIO; } if (!rc) tpacpi_led_state_cache[led] = ledstatus; return rc; } static void led_sysfs_set_status(unsigned int led, enum led_brightness brightness) { led_set_status(led, (brightness == LED_OFF) ? TPACPI_LED_OFF : (tpacpi_led_state_cache[led] == TPACPI_LED_BLINK) ? TPACPI_LED_BLINK : TPACPI_LED_ON); } static void led_set_status_worker(struct work_struct *work) { struct tpacpi_led_classdev *data = container_of(work, struct tpacpi_led_classdev, work); if (likely(tpacpi_lifecycle == TPACPI_LIFE_RUNNING)) led_sysfs_set_status(data->led, data->new_brightness); } static void led_sysfs_set(struct led_classdev *led_cdev, enum led_brightness brightness) { struct tpacpi_led_classdev *data = container_of(led_cdev, struct tpacpi_led_classdev, led_classdev); data->new_brightness = brightness; queue_work(tpacpi_wq, &data->work); } static int led_sysfs_blink_set(struct led_classdev *led_cdev, unsigned long *delay_on, unsigned long *delay_off) { struct tpacpi_led_classdev *data = container_of(led_cdev, struct tpacpi_led_classdev, led_classdev); /* Can we choose the flash rate? */ if (*delay_on == 0 && *delay_off == 0) { /* yes. set them to the hardware blink rate (1 Hz) */ *delay_on = 500; /* ms */ *delay_off = 500; /* ms */ } else if ((*delay_on != 500) || (*delay_off != 500)) return -EINVAL; data->new_brightness = TPACPI_LED_BLINK; queue_work(tpacpi_wq, &data->work); return 0; } static enum led_brightness led_sysfs_get(struct led_classdev *led_cdev) { int rc; struct tpacpi_led_classdev *data = container_of(led_cdev, struct tpacpi_led_classdev, led_classdev); rc = led_get_status(data->led); if (rc == TPACPI_LED_OFF || rc < 0) rc = LED_OFF; /* no error handling in led class :( */ else rc = LED_FULL; return rc; } static void led_exit(void) { unsigned int i; for (i = 0; i < TPACPI_LED_NUMLEDS; i++) { if (tpacpi_leds[i].led_classdev.name) led_classdev_unregister(&tpacpi_leds[i].led_classdev); } kfree(tpacpi_leds); } static int __init led_init(struct ibm_init_struct *iibm) { unsigned int i; int rc; vdbg_printk(TPACPI_DBG_INIT, "initializing LED subdriver\n"); TPACPI_ACPIHANDLE_INIT(led); if (!led_handle) /* led not supported on R30, R31 */ led_supported = TPACPI_LED_NONE; else if (strlencmp(led_path, "SLED") == 0) /* 570 */ led_supported = TPACPI_LED_570; else if (strlencmp(led_path, "SYSL") == 0) /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20-21 */ led_supported = TPACPI_LED_OLD; else /* all others */ led_supported = TPACPI_LED_NEW; vdbg_printk(TPACPI_DBG_INIT, "LED commands are %s, mode %d\n", str_supported(led_supported), led_supported); tpacpi_leds = kzalloc(sizeof(*tpacpi_leds) * TPACPI_LED_NUMLEDS, GFP_KERNEL); if (!tpacpi_leds) { printk(TPACPI_ERR "Out of memory for LED data\n"); return -ENOMEM; } for (i = 0; i < TPACPI_LED_NUMLEDS; i++) { tpacpi_leds[i].led = i; tpacpi_leds[i].led_classdev.brightness_set = &led_sysfs_set; tpacpi_leds[i].led_classdev.blink_set = &led_sysfs_blink_set; if (led_supported == TPACPI_LED_570) tpacpi_leds[i].led_classdev.brightness_get = &led_sysfs_get; tpacpi_leds[i].led_classdev.name = tpacpi_led_names[i]; INIT_WORK(&tpacpi_leds[i].work, led_set_status_worker); rc = led_classdev_register(&tpacpi_pdev->dev, &tpacpi_leds[i].led_classdev); if (rc < 0) { tpacpi_leds[i].led_classdev.name = NULL; led_exit(); return rc; } } return (led_supported != TPACPI_LED_NONE)? 0 : 1; } #define str_led_status(s) \ ((s) == TPACPI_LED_OFF ? "off" : \ ((s) == TPACPI_LED_ON ? "on" : "blinking")) static int led_read(char *p) { int len = 0; if (!led_supported) { len += sprintf(p + len, "status:\t\tnot supported\n"); return len; } len += sprintf(p + len, "status:\t\tsupported\n"); if (led_supported == TPACPI_LED_570) { /* 570 */ int i, status; for (i = 0; i < 8; i++) { status = led_get_status(i); if (status < 0) return -EIO; len += sprintf(p + len, "%d:\t\t%s\n", i, str_led_status(status)); } } len += sprintf(p + len, "commands:\t" " on, off, blink ( is 0-7)\n"); return len; } static int led_write(char *buf) { char *cmd; int led, rc; enum led_status_t s; if (!led_supported) return -ENODEV; while ((cmd = next_cmd(&buf))) { if (sscanf(cmd, "%d", &led) != 1 || led < 0 || led > 7) return -EINVAL; if (strstr(cmd, "off")) { s = TPACPI_LED_OFF; } else if (strstr(cmd, "on")) { s = TPACPI_LED_ON; } else if (strstr(cmd, "blink")) { s = TPACPI_LED_BLINK; } else { return -EINVAL; } rc = led_set_status(led, s); if (rc < 0) return rc; } return 0; } static struct ibm_struct led_driver_data = { .name = "led", .read = led_read, .write = led_write, .exit = led_exit, }; /************************************************************************* * Beep subdriver */ TPACPI_HANDLE(beep, ec, "BEEP"); /* all except R30, R31 */ static int __init beep_init(struct ibm_init_struct *iibm) { vdbg_printk(TPACPI_DBG_INIT, "initializing beep subdriver\n"); TPACPI_ACPIHANDLE_INIT(beep); vdbg_printk(TPACPI_DBG_INIT, "beep is %s\n", str_supported(beep_handle != NULL)); return (beep_handle)? 0 : 1; } static int beep_read(char *p) { int len = 0; if (!beep_handle) len += sprintf(p + len, "status:\t\tnot supported\n"); else { len += sprintf(p + len, "status:\t\tsupported\n"); len += sprintf(p + len, "commands:\t ( is 0-17)\n"); } return len; } static int beep_write(char *buf) { char *cmd; int beep_cmd; if (!beep_handle) return -ENODEV; while ((cmd = next_cmd(&buf))) { if (sscanf(cmd, "%u", &beep_cmd) == 1 && beep_cmd >= 0 && beep_cmd <= 17) { /* beep_cmd set */ } else return -EINVAL; if (!acpi_evalf(beep_handle, NULL, NULL, "vdd", beep_cmd, 0)) return -EIO; } return 0; } static struct ibm_struct beep_driver_data = { .name = "beep", .read = beep_read, .write = beep_write, }; /************************************************************************* * Thermal subdriver */ enum thermal_access_mode { TPACPI_THERMAL_NONE = 0, /* No thermal support */ TPACPI_THERMAL_ACPI_TMP07, /* Use ACPI TMP0-7 */ TPACPI_THERMAL_ACPI_UPDT, /* Use ACPI TMP0-7 with UPDT */ TPACPI_THERMAL_TPEC_8, /* Use ACPI EC regs, 8 sensors */ TPACPI_THERMAL_TPEC_16, /* Use ACPI EC regs, 16 sensors */ }; enum { /* TPACPI_THERMAL_TPEC_* */ TP_EC_THERMAL_TMP0 = 0x78, /* ACPI EC regs TMP 0..7 */ TP_EC_THERMAL_TMP8 = 0xC0, /* ACPI EC regs TMP 8..15 */ TP_EC_THERMAL_TMP_NA = -128, /* ACPI EC sensor not available */ }; #define TPACPI_MAX_THERMAL_SENSORS 16 /* Max thermal sensors supported */ struct ibm_thermal_sensors_struct { s32 temp[TPACPI_MAX_THERMAL_SENSORS]; }; static enum thermal_access_mode thermal_read_mode; /* idx is zero-based */ static int thermal_get_sensor(int idx, s32 *value) { int t; s8 tmp; char tmpi[5]; t = TP_EC_THERMAL_TMP0; switch (thermal_read_mode) { #if TPACPI_MAX_THERMAL_SENSORS >= 16 case TPACPI_THERMAL_TPEC_16: if (idx >= 8 && idx <= 15) { t = TP_EC_THERMAL_TMP8; idx -= 8; } /* fallthrough */ #endif case TPACPI_THERMAL_TPEC_8: if (idx <= 7) { if (!acpi_ec_read(t + idx, &tmp)) return -EIO; *value = tmp * 1000; return 0; } break; case TPACPI_THERMAL_ACPI_UPDT: if (idx <= 7) { snprintf(tmpi, sizeof(tmpi), "TMP%c", '0' + idx); if (!acpi_evalf(ec_handle, NULL, "UPDT", "v")) return -EIO; if (!acpi_evalf(ec_handle, &t, tmpi, "d")) return -EIO; *value = (t - 2732) * 100; return 0; } break; case TPACPI_THERMAL_ACPI_TMP07: if (idx <= 7) { snprintf(tmpi, sizeof(tmpi), "TMP%c", '0' + idx); if (!acpi_evalf(ec_handle, &t, tmpi, "d")) return -EIO; if (t > 127 || t < -127) t = TP_EC_THERMAL_TMP_NA; *value = t * 1000; return 0; } break; case TPACPI_THERMAL_NONE: default: return -ENOSYS; } return -EINVAL; } static int thermal_get_sensors(struct ibm_thermal_sensors_struct *s) { int res, i; int n; n = 8; i = 0; if (!s) return -EINVAL; if (thermal_read_mode == TPACPI_THERMAL_TPEC_16) n = 16; for (i = 0 ; i < n; i++) { res = thermal_get_sensor(i, &s->temp[i]); if (res) return res; } return n; } /* sysfs temp##_input -------------------------------------------------- */ static ssize_t thermal_temp_input_show(struct device *dev, struct device_attribute *attr, char *buf) { struct sensor_device_attribute *sensor_attr = to_sensor_dev_attr(attr); int idx = sensor_attr->index; s32 value; int res; res = thermal_get_sensor(idx, &value); if (res) return res; if (value == TP_EC_THERMAL_TMP_NA * 1000) return -ENXIO; return snprintf(buf, PAGE_SIZE, "%d\n", value); } #define THERMAL_SENSOR_ATTR_TEMP(_idxA, _idxB) \ SENSOR_ATTR(temp##_idxA##_input, S_IRUGO, \ thermal_temp_input_show, NULL, _idxB) static struct sensor_device_attribute sensor_dev_attr_thermal_temp_input[] = { THERMAL_SENSOR_ATTR_TEMP(1, 0), THERMAL_SENSOR_ATTR_TEMP(2, 1), THERMAL_SENSOR_ATTR_TEMP(3, 2), THERMAL_SENSOR_ATTR_TEMP(4, 3), THERMAL_SENSOR_ATTR_TEMP(5, 4), THERMAL_SENSOR_ATTR_TEMP(6, 5), THERMAL_SENSOR_ATTR_TEMP(7, 6), THERMAL_SENSOR_ATTR_TEMP(8, 7), THERMAL_SENSOR_ATTR_TEMP(9, 8), THERMAL_SENSOR_ATTR_TEMP(10, 9), THERMAL_SENSOR_ATTR_TEMP(11, 10), THERMAL_SENSOR_ATTR_TEMP(12, 11), THERMAL_SENSOR_ATTR_TEMP(13, 12), THERMAL_SENSOR_ATTR_TEMP(14, 13), THERMAL_SENSOR_ATTR_TEMP(15, 14), THERMAL_SENSOR_ATTR_TEMP(16, 15), }; #define THERMAL_ATTRS(X) \ &sensor_dev_attr_thermal_temp_input[X].dev_attr.attr static struct attribute *thermal_temp_input_attr[] = { THERMAL_ATTRS(8), THERMAL_ATTRS(9), THERMAL_ATTRS(10), THERMAL_ATTRS(11), THERMAL_ATTRS(12), THERMAL_ATTRS(13), THERMAL_ATTRS(14), THERMAL_ATTRS(15), THERMAL_ATTRS(0), THERMAL_ATTRS(1), THERMAL_ATTRS(2), THERMAL_ATTRS(3), THERMAL_ATTRS(4), THERMAL_ATTRS(5), THERMAL_ATTRS(6), THERMAL_ATTRS(7), NULL }; static const struct attribute_group thermal_temp_input16_group = { .attrs = thermal_temp_input_attr }; static const struct attribute_group thermal_temp_input8_group = { .attrs = &thermal_temp_input_attr[8] }; #undef THERMAL_SENSOR_ATTR_TEMP #undef THERMAL_ATTRS /* --------------------------------------------------------------------- */ static int __init thermal_init(struct ibm_init_struct *iibm) { u8 t, ta1, ta2; int i; int acpi_tmp7; int res; vdbg_printk(TPACPI_DBG_INIT, "initializing thermal subdriver\n"); acpi_tmp7 = acpi_evalf(ec_handle, NULL, "TMP7", "qv"); if (thinkpad_id.ec_model) { /* * Direct EC access mode: sensors at registers * 0x78-0x7F, 0xC0-0xC7. Registers return 0x00 for * non-implemented, thermal sensors return 0x80 when * not available */ ta1 = ta2 = 0; for (i = 0; i < 8; i++) { if (acpi_ec_read(TP_EC_THERMAL_TMP0 + i, &t)) { ta1 |= t; } else { ta1 = 0; break; } if (acpi_ec_read(TP_EC_THERMAL_TMP8 + i, &t)) { ta2 |= t; } else { ta1 = 0; break; } } if (ta1 == 0) { /* This is sheer paranoia, but we handle it anyway */ if (acpi_tmp7) { printk(TPACPI_ERR "ThinkPad ACPI EC access misbehaving, " "falling back to ACPI TMPx access " "mode\n"); thermal_read_mode = TPACPI_THERMAL_ACPI_TMP07; } else { printk(TPACPI_ERR "ThinkPad ACPI EC access misbehaving, " "disabling thermal sensors access\n"); thermal_read_mode = TPACPI_THERMAL_NONE; } } else { thermal_read_mode = (ta2 != 0) ? TPACPI_THERMAL_TPEC_16 : TPACPI_THERMAL_TPEC_8; } } else if (acpi_tmp7) { if (acpi_evalf(ec_handle, NULL, "UPDT", "qv")) { /* 600e/x, 770e, 770x */ thermal_read_mode = TPACPI_THERMAL_ACPI_UPDT; } else { /* Standard ACPI TMPx access, max 8 sensors */ thermal_read_mode = TPACPI_THERMAL_ACPI_TMP07; } } else { /* temperatures not supported on 570, G4x, R30, R31, R32 */ thermal_read_mode = TPACPI_THERMAL_NONE; } vdbg_printk(TPACPI_DBG_INIT, "thermal is %s, mode %d\n", str_supported(thermal_read_mode != TPACPI_THERMAL_NONE), thermal_read_mode); switch (thermal_read_mode) { case TPACPI_THERMAL_TPEC_16: res = sysfs_create_group(&tpacpi_sensors_pdev->dev.kobj, &thermal_temp_input16_group); if (res) return res; break; case TPACPI_THERMAL_TPEC_8: case TPACPI_THERMAL_ACPI_TMP07: case TPACPI_THERMAL_ACPI_UPDT: res = sysfs_create_group(&tpacpi_sensors_pdev->dev.kobj, &thermal_temp_input8_group); if (res) return res; break; case TPACPI_THERMAL_NONE: default: return 1; } return 0; } static void thermal_exit(void) { switch (thermal_read_mode) { case TPACPI_THERMAL_TPEC_16: sysfs_remove_group(&tpacpi_sensors_pdev->dev.kobj, &thermal_temp_input16_group); break; case TPACPI_THERMAL_TPEC_8: case TPACPI_THERMAL_ACPI_TMP07: case TPACPI_THERMAL_ACPI_UPDT: sysfs_remove_group(&tpacpi_sensors_pdev->dev.kobj, &thermal_temp_input16_group); break; case TPACPI_THERMAL_NONE: default: break; } } static int thermal_read(char *p) { int len = 0; int n, i; struct ibm_thermal_sensors_struct t; n = thermal_get_sensors(&t); if (unlikely(n < 0)) return n; len += sprintf(p + len, "temperatures:\t"); if (n > 0) { for (i = 0; i < (n - 1); i++) len += sprintf(p + len, "%d ", t.temp[i] / 1000); len += sprintf(p + len, "%d\n", t.temp[i] / 1000); } else len += sprintf(p + len, "not supported\n"); return len; } static struct ibm_struct thermal_driver_data = { .name = "thermal", .read = thermal_read, .exit = thermal_exit, }; /************************************************************************* * EC Dump subdriver */ static u8 ecdump_regs[256]; static int ecdump_read(char *p) { int len = 0; int i, j; u8 v; len += sprintf(p + len, "EC " " +00 +01 +02 +03 +04 +05 +06 +07" " +08 +09 +0a +0b +0c +0d +0e +0f\n"); for (i = 0; i < 256; i += 16) { len += sprintf(p + len, "EC 0x%02x:", i); for (j = 0; j < 16; j++) { if (!acpi_ec_read(i + j, &v)) break; if (v != ecdump_regs[i + j]) len += sprintf(p + len, " *%02x", v); else len += sprintf(p + len, " %02x", v); ecdump_regs[i + j] = v; } len += sprintf(p + len, "\n"); if (j != 16) break; } /* These are way too dangerous to advertise openly... */ #if 0 len += sprintf(p + len, "commands:\t0x 0x" " ( is 00-ff, is 00-ff)\n"); len += sprintf(p + len, "commands:\t0x " " ( is 00-ff, is 0-255)\n"); #endif return len; } static int ecdump_write(char *buf) { char *cmd; int i, v; while ((cmd = next_cmd(&buf))) { if (sscanf(cmd, "0x%x 0x%x", &i, &v) == 2) { /* i and v set */ } else if (sscanf(cmd, "0x%x %u", &i, &v) == 2) { /* i and v set */ } else return -EINVAL; if (i >= 0 && i < 256 && v >= 0 && v < 256) { if (!acpi_ec_write(i, v)) return -EIO; } else return -EINVAL; } return 0; } static struct ibm_struct ecdump_driver_data = { .name = "ecdump", .read = ecdump_read, .write = ecdump_write, .flags.experimental = 1, }; /************************************************************************* * Backlight/brightness subdriver */ #define TPACPI_BACKLIGHT_DEV_NAME "thinkpad_screen" enum { TP_EC_BACKLIGHT = 0x31, /* TP_EC_BACKLIGHT bitmasks */ TP_EC_BACKLIGHT_LVLMSK = 0x1F, TP_EC_BACKLIGHT_CMDMSK = 0xE0, TP_EC_BACKLIGHT_MAPSW = 0x20, }; static struct backlight_device *ibm_backlight_device; static int brightness_mode; static unsigned int brightness_enable = 2; /* 2 = auto, 0 = no, 1 = yes */ static struct mutex brightness_mutex; /* * ThinkPads can read brightness from two places: EC 0x31, or * CMOS NVRAM byte 0x5E, bits 0-3. * * EC 0x31 has the following layout * Bit 7: unknown function * Bit 6: unknown function * Bit 5: Z: honour scale changes, NZ: ignore scale changes * Bit 4: must be set to zero to avoid problems * Bit 3-0: backlight brightness level * * brightness_get_raw returns status data in the EC 0x31 layout */ static int brightness_get_raw(int *status) { u8 lec = 0, lcmos = 0, level = 0; if (brightness_mode & 1) { if (!acpi_ec_read(TP_EC_BACKLIGHT, &lec)) return -EIO; level = lec & TP_EC_BACKLIGHT_LVLMSK; }; if (brightness_mode & 2) { lcmos = (nvram_read_byte(TP_NVRAM_ADDR_BRIGHTNESS) & TP_NVRAM_MASK_LEVEL_BRIGHTNESS) >> TP_NVRAM_POS_LEVEL_BRIGHTNESS; lcmos &= (tp_features.bright_16levels)? 0x0f : 0x07; level = lcmos; } if (brightness_mode == 3) { *status = lec; /* Prefer EC, CMOS is just a backing store */ lec &= TP_EC_BACKLIGHT_LVLMSK; if (lec == lcmos) tp_warned.bright_cmos_ec_unsync = 0; else { if (!tp_warned.bright_cmos_ec_unsync) { printk(TPACPI_ERR "CMOS NVRAM (%u) and EC (%u) do not " "agree on display brightness level\n", (unsigned int) lcmos, (unsigned int) lec); tp_warned.bright_cmos_ec_unsync = 1; } return -EIO; } } else { *status = level; } return 0; } /* May return EINTR which can always be mapped to ERESTARTSYS */ static int brightness_set(int value) { int cmos_cmd, inc, i, res; int current_value; int command_bits; if (value > ((tp_features.bright_16levels)? 15 : 7) || value < 0) return -EINVAL; res = mutex_lock_interruptible(&brightness_mutex); if (res < 0) return res; res = brightness_get_raw(¤t_value); if (res < 0) goto errout; command_bits = current_value & TP_EC_BACKLIGHT_CMDMSK; current_value &= TP_EC_BACKLIGHT_LVLMSK; cmos_cmd = value > current_value ? TP_CMOS_BRIGHTNESS_UP : TP_CMOS_BRIGHTNESS_DOWN; inc = (value > current_value)? 1 : -1; res = 0; for (i = current_value; i != value; i += inc) { if ((brightness_mode & 2) && issue_thinkpad_cmos_command(cmos_cmd)) { res = -EIO; goto errout; } if ((brightness_mode & 1) && !acpi_ec_write(TP_EC_BACKLIGHT, (i + inc) | command_bits)) { res = -EIO; goto errout;; } } errout: mutex_unlock(&brightness_mutex); return res; } /* sysfs backlight class ----------------------------------------------- */ static int brightness_update_status(struct backlight_device *bd) { /* it is the backlight class's job (caller) to handle * EINTR and other errors properly */ return brightness_set( (bd->props.fb_blank == FB_BLANK_UNBLANK && bd->props.power == FB_BLANK_UNBLANK) ? bd->props.brightness : 0); } static int brightness_get(struct backlight_device *bd) { int status, res; res = brightness_get_raw(&status); if (res < 0) return 0; /* FIXME: teach backlight about error handling */ return status & TP_EC_BACKLIGHT_LVLMSK; } static struct backlight_ops ibm_backlight_data = { .get_brightness = brightness_get, .update_status = brightness_update_status, }; /* --------------------------------------------------------------------- */ static int __init brightness_init(struct ibm_init_struct *iibm) { int b; vdbg_printk(TPACPI_DBG_INIT, "initializing brightness subdriver\n"); mutex_init(&brightness_mutex); /* * We always attempt to detect acpi support, so as to switch * Lenovo Vista BIOS to ACPI brightness mode even if we are not * going to publish a backlight interface */ b = tpacpi_check_std_acpi_brightness_support(); if (b > 0) { if (thinkpad_id.vendor == PCI_VENDOR_ID_LENOVO) { printk(TPACPI_NOTICE "Lenovo BIOS switched to ACPI backlight " "control mode\n"); } if (brightness_enable > 1) { printk(TPACPI_NOTICE "standard ACPI backlight interface " "available, not loading native one...\n"); return 1; } } if (!brightness_enable) { dbg_printk(TPACPI_DBG_INIT, "brightness support disabled by " "module parameter\n"); return 1; } if (b > 16) { printk(TPACPI_ERR "Unsupported brightness interface, " "please contact %s\n", TPACPI_MAIL); return 1; } if (b == 16) tp_features.bright_16levels = 1; if (!brightness_mode) { if (thinkpad_id.vendor == PCI_VENDOR_ID_LENOVO) brightness_mode = 2; else brightness_mode = 3; dbg_printk(TPACPI_DBG_INIT, "selected brightness_mode=%d\n", brightness_mode); } if (brightness_mode > 3) return -EINVAL; if (brightness_get_raw(&b) < 0) return 1; if (tp_features.bright_16levels) printk(TPACPI_INFO "detected a 16-level brightness capable ThinkPad\n"); ibm_backlight_device = backlight_device_register( TPACPI_BACKLIGHT_DEV_NAME, NULL, NULL, &ibm_backlight_data); if (IS_ERR(ibm_backlight_device)) { printk(TPACPI_ERR "Could not register backlight device\n"); return PTR_ERR(ibm_backlight_device); } vdbg_printk(TPACPI_DBG_INIT, "brightness is supported\n"); ibm_backlight_device->props.max_brightness = (tp_features.bright_16levels)? 15 : 7; ibm_backlight_device->props.brightness = b & TP_EC_BACKLIGHT_LVLMSK; backlight_update_status(ibm_backlight_device); return 0; } static void brightness_exit(void) { if (ibm_backlight_device) { vdbg_printk(TPACPI_DBG_EXIT, "calling backlight_device_unregister()\n"); backlight_device_unregister(ibm_backlight_device); } } static int brightness_read(char *p) { int len = 0; int level; level = brightness_get(NULL); if (level < 0) { len += sprintf(p + len, "level:\t\tunreadable\n"); } else { len += sprintf(p + len, "level:\t\t%d\n", level); len += sprintf(p + len, "commands:\tup, down\n"); len += sprintf(p + len, "commands:\tlevel " " ( is 0-%d)\n", (tp_features.bright_16levels) ? 15 : 7); } return len; } static int brightness_write(char *buf) { int level; int rc; char *cmd; int max_level = (tp_features.bright_16levels) ? 15 : 7; level = brightness_get(NULL); if (level < 0) return level; while ((cmd = next_cmd(&buf))) { if (strlencmp(cmd, "up") == 0) { if (level < max_level) level++; } else if (strlencmp(cmd, "down") == 0) { if (level > 0) level--; } else if (sscanf(cmd, "level %d", &level) == 1 && level >= 0 && level <= max_level) { /* new level set */ } else return -EINVAL; } /* * Now we know what the final level should be, so we try to set it. * Doing it this way makes the syscall restartable in case of EINTR */ rc = brightness_set(level); return (rc == -EINTR)? ERESTARTSYS : rc; } static struct ibm_struct brightness_driver_data = { .name = "brightness", .read = brightness_read, .write = brightness_write, .exit = brightness_exit, }; /************************************************************************* * Volume subdriver */ static int volume_offset = 0x30; static int volume_read(char *p) { int len = 0; u8 level; if (!acpi_ec_read(volume_offset, &level)) { len += sprintf(p + len, "level:\t\tunreadable\n"); } else { len += sprintf(p + len, "level:\t\t%d\n", level & 0xf); len += sprintf(p + len, "mute:\t\t%s\n", onoff(level, 6)); len += sprintf(p + len, "commands:\tup, down, mute\n"); len += sprintf(p + len, "commands:\tlevel " " ( is 0-15)\n"); } return len; } static int volume_write(char *buf) { int cmos_cmd, inc, i; u8 level, mute; int new_level, new_mute; char *cmd; while ((cmd = next_cmd(&buf))) { if (!acpi_ec_read(volume_offset, &level)) return -EIO; new_mute = mute = level & 0x40; new_level = level = level & 0xf; if (strlencmp(cmd, "up") == 0) { if (mute) new_mute = 0; else new_level = level == 15 ? 15 : level + 1; } else if (strlencmp(cmd, "down") == 0) { if (mute) new_mute = 0; else new_level = level == 0 ? 0 : level - 1; } else if (sscanf(cmd, "level %d", &new_level) == 1 && new_level >= 0 && new_level <= 15) { /* new_level set */ } else if (strlencmp(cmd, "mute") == 0) { new_mute = 0x40; } else return -EINVAL; if (new_level != level) { /* mute doesn't change */ cmos_cmd = (new_level > level) ? TP_CMOS_VOLUME_UP : TP_CMOS_VOLUME_DOWN; inc = new_level > level ? 1 : -1; if (mute && (issue_thinkpad_cmos_command(cmos_cmd) || !acpi_ec_write(volume_offset, level))) return -EIO; for (i = level; i != new_level; i += inc) if (issue_thinkpad_cmos_command(cmos_cmd) || !acpi_ec_write(volume_offset, i + inc)) return -EIO; if (mute && (issue_thinkpad_cmos_command(TP_CMOS_VOLUME_MUTE) || !acpi_ec_write(volume_offset, new_level + mute))) { return -EIO; } } if (new_mute != mute) { /* level doesn't change */ cmos_cmd = (new_mute) ? TP_CMOS_VOLUME_MUTE : TP_CMOS_VOLUME_UP; if (issue_thinkpad_cmos_command(cmos_cmd) || !acpi_ec_write(volume_offset, level + new_mute)) return -EIO; } } return 0; } static struct ibm_struct volume_driver_data = { .name = "volume", .read = volume_read, .write = volume_write, }; /************************************************************************* * Fan subdriver */ /* * FAN ACCESS MODES * * TPACPI_FAN_RD_ACPI_GFAN: * ACPI GFAN method: returns fan level * * see TPACPI_FAN_WR_ACPI_SFAN * EC 0x2f (HFSP) not available if GFAN exists * * TPACPI_FAN_WR_ACPI_SFAN: * ACPI SFAN method: sets fan level, 0 (stop) to 7 (max) * * EC 0x2f (HFSP) might be available *for reading*, but do not use * it for writing. * * TPACPI_FAN_WR_TPEC: * ThinkPad EC register 0x2f (HFSP): fan control loop mode * Supported on almost all ThinkPads * * Fan speed changes of any sort (including those caused by the * disengaged mode) are usually done slowly by the firmware as the * maximum ammount of fan duty cycle change per second seems to be * limited. * * Reading is not available if GFAN exists. * Writing is not available if SFAN exists. * * Bits * 7 automatic mode engaged; * (default operation mode of the ThinkPad) * fan level is ignored in this mode. * 6 full speed mode (takes precedence over bit 7); * not available on all thinkpads. May disable * the tachometer while the fan controller ramps up * the speed (which can take up to a few *minutes*). * Speeds up fan to 100% duty-cycle, which is far above * the standard RPM levels. It is not impossible that * it could cause hardware damage. * 5-3 unused in some models. Extra bits for fan level * in others, but still useless as all values above * 7 map to the same speed as level 7 in these models. * 2-0 fan level (0..7 usually) * 0x00 = stop * 0x07 = max (set when temperatures critical) * Some ThinkPads may have other levels, see * TPACPI_FAN_WR_ACPI_FANS (X31/X40/X41) * * FIRMWARE BUG: on some models, EC 0x2f might not be initialized at * boot. Apparently the EC does not intialize it, so unless ACPI DSDT * does so, its initial value is meaningless (0x07). * * For firmware bugs, refer to: * http://thinkwiki.org/wiki/Embedded_Controller_Firmware#Firmware_Issues * * ---- * * ThinkPad EC register 0x84 (LSB), 0x85 (MSB): * Main fan tachometer reading (in RPM) * * This register is present on all ThinkPads with a new-style EC, and * it is known not to be present on the A21m/e, and T22, as there is * something else in offset 0x84 according to the ACPI DSDT. Other * ThinkPads from this same time period (and earlier) probably lack the * tachometer as well. * * Unfortunately a lot of ThinkPads with new-style ECs but whose firwmare * was never fixed by IBM to report the EC firmware version string * probably support the tachometer (like the early X models), so * detecting it is quite hard. We need more data to know for sure. * * FIRMWARE BUG: always read 0x84 first, otherwise incorrect readings * might result. * * FIRMWARE BUG: may go stale while the EC is switching to full speed * mode. * * For firmware bugs, refer to: * http://thinkwiki.org/wiki/Embedded_Controller_Firmware#Firmware_Issues * * TPACPI_FAN_WR_ACPI_FANS: * ThinkPad X31, X40, X41. Not available in the X60. * * FANS ACPI handle: takes three arguments: low speed, medium speed, * high speed. ACPI DSDT seems to map these three speeds to levels * as follows: STOP LOW LOW MED MED HIGH HIGH HIGH HIGH * (this map is stored on FAN0..FAN8 as "0,1,1,2,2,3,3,3,3") * * The speeds are stored on handles * (FANA:FAN9), (FANC:FANB), (FANE:FAND). * * There are three default speed sets, acessible as handles: * FS1L,FS1M,FS1H; FS2L,FS2M,FS2H; FS3L,FS3M,FS3H * * ACPI DSDT switches which set is in use depending on various * factors. * * TPACPI_FAN_WR_TPEC is also available and should be used to * command the fan. The X31/X40/X41 seems to have 8 fan levels, * but the ACPI tables just mention level 7. */ enum { /* Fan control constants */ fan_status_offset = 0x2f, /* EC register 0x2f */ fan_rpm_offset = 0x84, /* EC register 0x84: LSB, 0x85 MSB (RPM) * 0x84 must be read before 0x85 */ TP_EC_FAN_FULLSPEED = 0x40, /* EC fan mode: full speed */ TP_EC_FAN_AUTO = 0x80, /* EC fan mode: auto fan control */ TPACPI_FAN_LAST_LEVEL = 0x100, /* Use cached last-seen fan level */ }; enum fan_status_access_mode { TPACPI_FAN_NONE = 0, /* No fan status or control */ TPACPI_FAN_RD_ACPI_GFAN, /* Use ACPI GFAN */ TPACPI_FAN_RD_TPEC, /* Use ACPI EC regs 0x2f, 0x84-0x85 */ }; enum fan_control_access_mode { TPACPI_FAN_WR_NONE = 0, /* No fan control */ TPACPI_FAN_WR_ACPI_SFAN, /* Use ACPI SFAN */ TPACPI_FAN_WR_TPEC, /* Use ACPI EC reg 0x2f */ TPACPI_FAN_WR_ACPI_FANS, /* Use ACPI FANS and EC reg 0x2f */ }; enum fan_control_commands { TPACPI_FAN_CMD_SPEED = 0x0001, /* speed command */ TPACPI_FAN_CMD_LEVEL = 0x0002, /* level command */ TPACPI_FAN_CMD_ENABLE = 0x0004, /* enable/disable cmd, * and also watchdog cmd */ }; static int fan_control_allowed; static enum fan_status_access_mode fan_status_access_mode; static enum fan_control_access_mode fan_control_access_mode; static enum fan_control_commands fan_control_commands; static u8 fan_control_initial_status; static u8 fan_control_desired_level; static int fan_watchdog_maxinterval; static struct mutex fan_mutex; static void fan_watchdog_fire(struct work_struct *ignored); static DECLARE_DELAYED_WORK(fan_watchdog_task, fan_watchdog_fire); TPACPI_HANDLE(fans, ec, "FANS"); /* X31, X40, X41 */ TPACPI_HANDLE(gfan, ec, "GFAN", /* 570 */ "\\FSPD", /* 600e/x, 770e, 770x */ ); /* all others */ TPACPI_HANDLE(sfan, ec, "SFAN", /* 570 */ "JFNS", /* 770x-JL */ ); /* all others */ /* * Call with fan_mutex held */ static void fan_update_desired_level(u8 status) { if ((status & (TP_EC_FAN_AUTO | TP_EC_FAN_FULLSPEED)) == 0) { if (status > 7) fan_control_desired_level = 7; else fan_control_desired_level = status; } } static int fan_get_status(u8 *status) { u8 s; /* TODO: * Add TPACPI_FAN_RD_ACPI_FANS ? */ switch (fan_status_access_mode) { case TPACPI_FAN_RD_ACPI_GFAN: /* 570, 600e/x, 770e, 770x */ if (unlikely(!acpi_evalf(gfan_handle, &s, NULL, "d"))) return -EIO; if (likely(status)) *status = s & 0x07; break; case TPACPI_FAN_RD_TPEC: /* all except 570, 600e/x, 770e, 770x */ if (unlikely(!acpi_ec_read(fan_status_offset, &s))) return -EIO; if (likely(status)) *status = s; break; default: return -ENXIO; } return 0; } static int fan_get_status_safe(u8 *status) { int rc; u8 s; if (mutex_lock_interruptible(&fan_mutex)) return -ERESTARTSYS; rc = fan_get_status(&s); if (!rc) fan_update_desired_level(s); mutex_unlock(&fan_mutex); if (status) *status = s; return rc; } static int fan_get_speed(unsigned int *speed) { u8 hi, lo; switch (fan_status_access_mode) { case TPACPI_FAN_RD_TPEC: /* all except 570, 600e/x, 770e, 770x */ if (unlikely(!acpi_ec_read(fan_rpm_offset, &lo) || !acpi_ec_read(fan_rpm_offset + 1, &hi))) return -EIO; if (likely(speed)) *speed = (hi << 8) | lo; break; default: return -ENXIO; } return 0; } static int fan_set_level(int level) { if (!fan_control_allowed) return -EPERM; switch (fan_control_access_mode) { case TPACPI_FAN_WR_ACPI_SFAN: if (level >= 0 && level <= 7) { if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", level)) return -EIO; } else return -EINVAL; break; case TPACPI_FAN_WR_ACPI_FANS: case TPACPI_FAN_WR_TPEC: if ((level != TP_EC_FAN_AUTO) && (level != TP_EC_FAN_FULLSPEED) && ((level < 0) || (level > 7))) return -EINVAL; /* safety net should the EC not support AUTO * or FULLSPEED mode bits and just ignore them */ if (level & TP_EC_FAN_FULLSPEED) level |= 7; /* safety min speed 7 */ else if (level & TP_EC_FAN_AUTO) level |= 4; /* safety min speed 4 */ if (!acpi_ec_write(fan_status_offset, level)) return -EIO; else tp_features.fan_ctrl_status_undef = 0; break; default: return -ENXIO; } return 0; } static int fan_set_level_safe(int level) { int rc; if (!fan_control_allowed) return -EPERM; if (mutex_lock_interruptible(&fan_mutex)) return -ERESTARTSYS; if (level == TPACPI_FAN_LAST_LEVEL) level = fan_control_desired_level; rc = fan_set_level(level); if (!rc) fan_update_desired_level(level); mutex_unlock(&fan_mutex); return rc; } static int fan_set_enable(void) { u8 s; int rc; if (!fan_control_allowed) return -EPERM; if (mutex_lock_interruptible(&fan_mutex)) return -ERESTARTSYS; switch (fan_control_access_mode) { case TPACPI_FAN_WR_ACPI_FANS: case TPACPI_FAN_WR_TPEC: rc = fan_get_status(&s); if (rc < 0) break; /* Don't go out of emergency fan mode */ if (s != 7) { s &= 0x07; s |= TP_EC_FAN_AUTO | 4; /* min fan speed 4 */ } if (!acpi_ec_write(fan_status_offset, s)) rc = -EIO; else { tp_features.fan_ctrl_status_undef = 0; rc = 0; } break; case TPACPI_FAN_WR_ACPI_SFAN: rc = fan_get_status(&s); if (rc < 0) break; s &= 0x07; /* Set fan to at least level 4 */ s |= 4; if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", s)) rc = -EIO; else rc = 0; break; default: rc = -ENXIO; } mutex_unlock(&fan_mutex); return rc; } static int fan_set_disable(void) { int rc; if (!fan_control_allowed) return -EPERM; if (mutex_lock_interruptible(&fan_mutex)) return -ERESTARTSYS; rc = 0; switch (fan_control_access_mode) { case TPACPI_FAN_WR_ACPI_FANS: case TPACPI_FAN_WR_TPEC: if (!acpi_ec_write(fan_status_offset, 0x00)) rc = -EIO; else { fan_control_desired_level = 0; tp_features.fan_ctrl_status_undef = 0; } break; case TPACPI_FAN_WR_ACPI_SFAN: if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", 0x00)) rc = -EIO; else fan_control_desired_level = 0; break; default: rc = -ENXIO; } mutex_unlock(&fan_mutex); return rc; } static int fan_set_speed(int speed) { int rc; if (!fan_control_allowed) return -EPERM; if (mutex_lock_interruptible(&fan_mutex)) return -ERESTARTSYS; rc = 0; switch (fan_control_access_mode) { case TPACPI_FAN_WR_ACPI_FANS: if (speed >= 0 && speed <= 65535) { if (!acpi_evalf(fans_handle, NULL, NULL, "vddd", speed, speed, speed)) rc = -EIO; } else rc = -EINVAL; break; default: rc = -ENXIO; } mutex_unlock(&fan_mutex); return rc; } static void fan_watchdog_reset(void) { static int fan_watchdog_active; if (fan_control_access_mode == TPACPI_FAN_WR_NONE) return; if (fan_watchdog_active) cancel_delayed_work(&fan_watchdog_task); if (fan_watchdog_maxinterval > 0 && tpacpi_lifecycle != TPACPI_LIFE_EXITING) { fan_watchdog_active = 1; if (!queue_delayed_work(tpacpi_wq, &fan_watchdog_task, msecs_to_jiffies(fan_watchdog_maxinterval * 1000))) { printk(TPACPI_ERR "failed to queue the fan watchdog, " "watchdog will not trigger\n"); } } else fan_watchdog_active = 0; } static void fan_watchdog_fire(struct work_struct *ignored) { int rc; if (tpacpi_lifecycle != TPACPI_LIFE_RUNNING) return; printk(TPACPI_NOTICE "fan watchdog: enabling fan\n"); rc = fan_set_enable(); if (rc < 0) { printk(TPACPI_ERR "fan watchdog: error %d while enabling fan, " "will try again later...\n", -rc); /* reschedule for later */ fan_watchdog_reset(); } } /* * SYSFS fan layout: hwmon compatible (device) * * pwm*_enable: * 0: "disengaged" mode * 1: manual mode * 2: native EC "auto" mode (recommended, hardware default) * * pwm*: set speed in manual mode, ignored otherwise. * 0 is level 0; 255 is level 7. Intermediate points done with linear * interpolation. * * fan*_input: tachometer reading, RPM * * * SYSFS fan layout: extensions * * fan_watchdog (driver): * fan watchdog interval in seconds, 0 disables (default), max 120 */ /* sysfs fan pwm1_enable ----------------------------------------------- */ static ssize_t fan_pwm1_enable_show(struct device *dev, struct device_attribute *attr, char *buf) { int res, mode; u8 status; res = fan_get_status_safe(&status); if (res) return res; if (unlikely(tp_features.fan_ctrl_status_undef)) { if (status != fan_control_initial_status) { tp_features.fan_ctrl_status_undef = 0; } else { /* Return most likely status. In fact, it * might be the only possible status */ status = TP_EC_FAN_AUTO; } } if (status & TP_EC_FAN_FULLSPEED) { mode = 0; } else if (status & TP_EC_FAN_AUTO) { mode = 2; } else mode = 1; return snprintf(buf, PAGE_SIZE, "%d\n", mode); } static ssize_t fan_pwm1_enable_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { unsigned long t; int res, level; if (parse_strtoul(buf, 2, &t)) return -EINVAL; switch (t) { case 0: level = TP_EC_FAN_FULLSPEED; break; case 1: level = TPACPI_FAN_LAST_LEVEL; break; case 2: level = TP_EC_FAN_AUTO; break; case 3: /* reserved for software-controlled auto mode */ return -ENOSYS; default: return -EINVAL; } res = fan_set_level_safe(level); if (res == -ENXIO) return -EINVAL; else if (res < 0) return res; fan_watchdog_reset(); return count; } static struct device_attribute dev_attr_fan_pwm1_enable = __ATTR(pwm1_enable, S_IWUSR | S_IRUGO, fan_pwm1_enable_show, fan_pwm1_enable_store); /* sysfs fan pwm1 ------------------------------------------------------ */ static ssize_t fan_pwm1_show(struct device *dev, struct device_attribute *attr, char *buf) { int res; u8 status; res = fan_get_status_safe(&status); if (res) return res; if (unlikely(tp_features.fan_ctrl_status_undef)) { if (status != fan_control_initial_status) { tp_features.fan_ctrl_status_undef = 0; } else { status = TP_EC_FAN_AUTO; } } if ((status & (TP_EC_FAN_AUTO | TP_EC_FAN_FULLSPEED)) != 0) status = fan_control_desired_level; if (status > 7) status = 7; return snprintf(buf, PAGE_SIZE, "%u\n", (status * 255) / 7); } static ssize_t fan_pwm1_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { unsigned long s; int rc; u8 status, newlevel; if (parse_strtoul(buf, 255, &s)) return -EINVAL; /* scale down from 0-255 to 0-7 */ newlevel = (s >> 5) & 0x07; if (mutex_lock_interruptible(&fan_mutex)) return -ERESTARTSYS; rc = fan_get_status(&status); if (!rc && (status & (TP_EC_FAN_AUTO | TP_EC_FAN_FULLSPEED)) == 0) { rc = fan_set_level(newlevel); if (rc == -ENXIO) rc = -EINVAL; else if (!rc) { fan_update_desired_level(newlevel); fan_watchdog_reset(); } } mutex_unlock(&fan_mutex); return (rc)? rc : count; } static struct device_attribute dev_attr_fan_pwm1 = __ATTR(pwm1, S_IWUSR | S_IRUGO, fan_pwm1_show, fan_pwm1_store); /* sysfs fan fan1_input ------------------------------------------------ */ static ssize_t fan_fan1_input_show(struct device *dev, struct device_attribute *attr, char *buf) { int res; unsigned int speed; res = fan_get_speed(&speed); if (res < 0) return res; return snprintf(buf, PAGE_SIZE, "%u\n", speed); } static struct device_attribute dev_attr_fan_fan1_input = __ATTR(fan1_input, S_IRUGO, fan_fan1_input_show, NULL); /* sysfs fan fan_watchdog (hwmon driver) ------------------------------- */ static ssize_t fan_fan_watchdog_show(struct device_driver *drv, char *buf) { return snprintf(buf, PAGE_SIZE, "%u\n", fan_watchdog_maxinterval); } static ssize_t fan_fan_watchdog_store(struct device_driver *drv, const char *buf, size_t count) { unsigned long t; if (parse_strtoul(buf, 120, &t)) return -EINVAL; if (!fan_control_allowed) return -EPERM; fan_watchdog_maxinterval = t; fan_watchdog_reset(); return count; } static DRIVER_ATTR(fan_watchdog, S_IWUSR | S_IRUGO, fan_fan_watchdog_show, fan_fan_watchdog_store); /* --------------------------------------------------------------------- */ static struct attribute *fan_attributes[] = { &dev_attr_fan_pwm1_enable.attr, &dev_attr_fan_pwm1.attr, &dev_attr_fan_fan1_input.attr, NULL }; static const struct attribute_group fan_attr_group = { .attrs = fan_attributes, }; static int __init fan_init(struct ibm_init_struct *iibm) { int rc; vdbg_printk(TPACPI_DBG_INIT, "initializing fan subdriver\n"); mutex_init(&fan_mutex); fan_status_access_mode = TPACPI_FAN_NONE; fan_control_access_mode = TPACPI_FAN_WR_NONE; fan_control_commands = 0; fan_watchdog_maxinterval = 0; tp_features.fan_ctrl_status_undef = 0; fan_control_desired_level = 7; TPACPI_ACPIHANDLE_INIT(fans); TPACPI_ACPIHANDLE_INIT(gfan); TPACPI_ACPIHANDLE_INIT(sfan); if (gfan_handle) { /* 570, 600e/x, 770e, 770x */ fan_status_access_mode = TPACPI_FAN_RD_ACPI_GFAN; } else { /* all other ThinkPads: note that even old-style * ThinkPad ECs supports the fan control register */ if (likely(acpi_ec_read(fan_status_offset, &fan_control_initial_status))) { fan_status_access_mode = TPACPI_FAN_RD_TPEC; /* In some ThinkPads, neither the EC nor the ACPI * DSDT initialize the fan status, and it ends up * being set to 0x07 when it *could* be either * 0x07 or 0x80. * * Enable for TP-1Y (T43), TP-78 (R51e), * TP-76 (R52), TP-70 (T43, R52), which are known * to be buggy. */ if (fan_control_initial_status == 0x07) { switch (thinkpad_id.ec_model) { case 0x5931: /* TP-1Y */ case 0x3837: /* TP-78 */ case 0x3637: /* TP-76 */ case 0x3037: /* TP-70 */ printk(TPACPI_NOTICE "fan_init: initial fan status " "is unknown, assuming it is " "in auto mode\n"); tp_features.fan_ctrl_status_undef = 1; ;; } } } else { printk(TPACPI_ERR "ThinkPad ACPI EC access misbehaving, " "fan status and control unavailable\n"); return 1; } } if (sfan_handle) { /* 570, 770x-JL */ fan_control_access_mode = TPACPI_FAN_WR_ACPI_SFAN; fan_control_commands |= TPACPI_FAN_CMD_LEVEL | TPACPI_FAN_CMD_ENABLE; } else { if (!gfan_handle) { /* gfan without sfan means no fan control */ /* all other models implement TP EC 0x2f control */ if (fans_handle) { /* X31, X40, X41 */ fan_control_access_mode = TPACPI_FAN_WR_ACPI_FANS; fan_control_commands |= TPACPI_FAN_CMD_SPEED | TPACPI_FAN_CMD_LEVEL | TPACPI_FAN_CMD_ENABLE; } else { fan_control_access_mode = TPACPI_FAN_WR_TPEC; fan_control_commands |= TPACPI_FAN_CMD_LEVEL | TPACPI_FAN_CMD_ENABLE; } } } vdbg_printk(TPACPI_DBG_INIT, "fan is %s, modes %d, %d\n", str_supported(fan_status_access_mode != TPACPI_FAN_NONE || fan_control_access_mode != TPACPI_FAN_WR_NONE), fan_status_access_mode, fan_control_access_mode); /* fan control master switch */ if (!fan_control_allowed) { fan_control_access_mode = TPACPI_FAN_WR_NONE; fan_control_commands = 0; dbg_printk(TPACPI_DBG_INIT, "fan control features disabled by parameter\n"); } /* update fan_control_desired_level */ if (fan_status_access_mode != TPACPI_FAN_NONE) fan_get_status_safe(NULL); if (fan_status_access_mode != TPACPI_FAN_NONE || fan_control_access_mode != TPACPI_FAN_WR_NONE) { rc = sysfs_create_group(&tpacpi_sensors_pdev->dev.kobj, &fan_attr_group); if (rc < 0) return rc; rc = driver_create_file(&tpacpi_hwmon_pdriver.driver, &driver_attr_fan_watchdog); if (rc < 0) { sysfs_remove_group(&tpacpi_sensors_pdev->dev.kobj, &fan_attr_group); return rc; } return 0; } else return 1; } static void fan_exit(void) { vdbg_printk(TPACPI_DBG_EXIT, "cancelling any pending fan watchdog tasks\n"); /* FIXME: can we really do this unconditionally? */ sysfs_remove_group(&tpacpi_sensors_pdev->dev.kobj, &fan_attr_group); driver_remove_file(&tpacpi_hwmon_pdriver.driver, &driver_attr_fan_watchdog); cancel_delayed_work(&fan_watchdog_task); flush_workqueue(tpacpi_wq); } static int fan_read(char *p) { int len = 0; int rc; u8 status; unsigned int speed = 0; switch (fan_status_access_mode) { case TPACPI_FAN_RD_ACPI_GFAN: /* 570, 600e/x, 770e, 770x */ rc = fan_get_status_safe(&status); if (rc < 0) return rc; len += sprintf(p + len, "status:\t\t%s\n" "level:\t\t%d\n", (status != 0) ? "enabled" : "disabled", status); break; case TPACPI_FAN_RD_TPEC: /* all except 570, 600e/x, 770e, 770x */ rc = fan_get_status_safe(&status); if (rc < 0) return rc; if (unlikely(tp_features.fan_ctrl_status_undef)) { if (status != fan_control_initial_status) tp_features.fan_ctrl_status_undef = 0; else /* Return most likely status. In fact, it * might be the only possible status */ status = TP_EC_FAN_AUTO; } len += sprintf(p + len, "status:\t\t%s\n", (status != 0) ? "enabled" : "disabled"); rc = fan_get_speed(&speed); if (rc < 0) return rc; len += sprintf(p + len, "speed:\t\t%d\n", speed); if (status & TP_EC_FAN_FULLSPEED) /* Disengaged mode takes precedence */ len += sprintf(p + len, "level:\t\tdisengaged\n"); else if (status & TP_EC_FAN_AUTO) len += sprintf(p + len, "level:\t\tauto\n"); else len += sprintf(p + len, "level:\t\t%d\n", status); break; case TPACPI_FAN_NONE: default: len += sprintf(p + len, "status:\t\tnot supported\n"); } if (fan_control_commands & TPACPI_FAN_CMD_LEVEL) { len += sprintf(p + len, "commands:\tlevel "); switch (fan_control_access_mode) { case TPACPI_FAN_WR_ACPI_SFAN: len += sprintf(p + len, " ( is 0-7)\n"); break; default: len += sprintf(p + len, " ( is 0-7, " "auto, disengaged, full-speed)\n"); break; } } if (fan_control_commands & TPACPI_FAN_CMD_ENABLE) len += sprintf(p + len, "commands:\tenable, disable\n" "commands:\twatchdog ( " "is 0 (off), 1-120 (seconds))\n"); if (fan_control_commands & TPACPI_FAN_CMD_SPEED) len += sprintf(p + len, "commands:\tspeed " " ( is 0-65535)\n"); return len; } static int fan_write_cmd_level(const char *cmd, int *rc) { int level; if (strlencmp(cmd, "level auto") == 0) level = TP_EC_FAN_AUTO; else if ((strlencmp(cmd, "level disengaged") == 0) | (strlencmp(cmd, "level full-speed") == 0)) level = TP_EC_FAN_FULLSPEED; else if (sscanf(cmd, "level %d", &level) != 1) return 0; *rc = fan_set_level_safe(level); if (*rc == -ENXIO) printk(TPACPI_ERR "level command accepted for unsupported " "access mode %d", fan_control_access_mode); return 1; } static int fan_write_cmd_enable(const char *cmd, int *rc) { if (strlencmp(cmd, "enable") != 0) return 0; *rc = fan_set_enable(); if (*rc == -ENXIO) printk(TPACPI_ERR "enable command accepted for unsupported " "access mode %d", fan_control_access_mode); return 1; } static int fan_write_cmd_disable(const char *cmd, int *rc) { if (strlencmp(cmd, "disable") != 0) return 0; *rc = fan_set_disable(); if (*rc == -ENXIO) printk(TPACPI_ERR "disable command accepted for unsupported " "access mode %d", fan_control_access_mode); return 1; } static int fan_write_cmd_speed(const char *cmd, int *rc) { int speed; /* TODO: * Support speed ? */ if (sscanf(cmd, "speed %d", &speed) != 1) return 0; *rc = fan_set_speed(speed); if (*rc == -ENXIO) printk(TPACPI_ERR "speed command accepted for unsupported " "access mode %d", fan_control_access_mode); return 1; } static int fan_write_cmd_watchdog(const char *cmd, int *rc) { int interval; if (sscanf(cmd, "watchdog %d", &interval) != 1) return 0; if (interval < 0 || interval > 120) *rc = -EINVAL; else fan_watchdog_maxinterval = interval; return 1; } static int fan_write(char *buf) { char *cmd; int rc = 0; while (!rc && (cmd = next_cmd(&buf))) { if (!((fan_control_commands & TPACPI_FAN_CMD_LEVEL) && fan_write_cmd_level(cmd, &rc)) && !((fan_control_commands & TPACPI_FAN_CMD_ENABLE) && (fan_write_cmd_enable(cmd, &rc) || fan_write_cmd_disable(cmd, &rc) || fan_write_cmd_watchdog(cmd, &rc))) && !((fan_control_commands & TPACPI_FAN_CMD_SPEED) && fan_write_cmd_speed(cmd, &rc)) ) rc = -EINVAL; else if (!rc) fan_watchdog_reset(); } return rc; } static struct ibm_struct fan_driver_data = { .name = "fan", .read = fan_read, .write = fan_write, .exit = fan_exit, }; /**************************************************************************** **************************************************************************** * * Infrastructure * **************************************************************************** ****************************************************************************/ /* sysfs name ---------------------------------------------------------- */ static ssize_t thinkpad_acpi_pdev_name_show(struct device *dev, struct device_attribute *attr, char *buf) { return snprintf(buf, PAGE_SIZE, "%s\n", TPACPI_NAME); } static struct device_attribute dev_attr_thinkpad_acpi_pdev_name = __ATTR(name, S_IRUGO, thinkpad_acpi_pdev_name_show, NULL); /* --------------------------------------------------------------------- */ /* /proc support */ static struct proc_dir_entry *proc_dir; /* * Module and infrastructure proble, init and exit handling */ static int force_load; #ifdef CONFIG_THINKPAD_ACPI_DEBUG static const char * __init str_supported(int is_supported) { static char text_unsupported[] __initdata = "not supported"; return (is_supported)? &text_unsupported[4] : &text_unsupported[0]; } #endif /* CONFIG_THINKPAD_ACPI_DEBUG */ static void ibm_exit(struct ibm_struct *ibm) { dbg_printk(TPACPI_DBG_EXIT, "removing %s\n", ibm->name); list_del_init(&ibm->all_drivers); if (ibm->flags.acpi_notify_installed) { dbg_printk(TPACPI_DBG_EXIT, "%s: acpi_remove_notify_handler\n", ibm->name); BUG_ON(!ibm->acpi); acpi_remove_notify_handler(*ibm->acpi->handle, ibm->acpi->type, dispatch_acpi_notify); ibm->flags.acpi_notify_installed = 0; ibm->flags.acpi_notify_installed = 0; } if (ibm->flags.proc_created) { dbg_printk(TPACPI_DBG_EXIT, "%s: remove_proc_entry\n", ibm->name); remove_proc_entry(ibm->name, proc_dir); ibm->flags.proc_created = 0; } if (ibm->flags.acpi_driver_registered) { dbg_printk(TPACPI_DBG_EXIT, "%s: acpi_bus_unregister_driver\n", ibm->name); BUG_ON(!ibm->acpi); acpi_bus_unregister_driver(ibm->acpi->driver); kfree(ibm->acpi->driver); ibm->acpi->driver = NULL; ibm->flags.acpi_driver_registered = 0; } if (ibm->flags.init_called && ibm->exit) { ibm->exit(); ibm->flags.init_called = 0; } dbg_printk(TPACPI_DBG_INIT, "finished removing %s\n", ibm->name); } static int __init ibm_init(struct ibm_init_struct *iibm) { int ret; struct ibm_struct *ibm = iibm->data; struct proc_dir_entry *entry; BUG_ON(ibm == NULL); INIT_LIST_HEAD(&ibm->all_drivers); if (ibm->flags.experimental && !experimental) return 0; dbg_printk(TPACPI_DBG_INIT, "probing for %s\n", ibm->name); if (iibm->init) { ret = iibm->init(iibm); if (ret > 0) return 0; /* probe failed */ if (ret) return ret; ibm->flags.init_called = 1; } if (ibm->acpi) { if (ibm->acpi->hid) { ret = register_tpacpi_subdriver(ibm); if (ret) goto err_out; } if (ibm->acpi->notify) { ret = setup_acpi_notify(ibm); if (ret == -ENODEV) { printk(TPACPI_NOTICE "disabling subdriver %s\n", ibm->name); ret = 0; goto err_out; } if (ret < 0) goto err_out; } } dbg_printk(TPACPI_DBG_INIT, "%s installed\n", ibm->name); if (ibm->read) { entry = create_proc_entry(ibm->name, S_IFREG | S_IRUGO | S_IWUSR, proc_dir); if (!entry) { printk(TPACPI_ERR "unable to create proc entry %s\n", ibm->name); ret = -ENODEV; goto err_out; } entry->owner = THIS_MODULE; entry->data = ibm; entry->read_proc = &dispatch_procfs_read; if (ibm->write) entry->write_proc = &dispatch_procfs_write; ibm->flags.proc_created = 1; } list_add_tail(&ibm->all_drivers, &tpacpi_all_drivers); return 0; err_out: dbg_printk(TPACPI_DBG_INIT, "%s: at error exit path with result %d\n", ibm->name, ret); ibm_exit(ibm); return (ret < 0)? ret : 0; } /* Probing */ static void __init get_thinkpad_model_data(struct thinkpad_id_data *tp) { const struct dmi_device *dev = NULL; char ec_fw_string[18]; if (!tp) return; memset(tp, 0, sizeof(*tp)); if (dmi_name_in_vendors("IBM")) tp->vendor = PCI_VENDOR_ID_IBM; else if (dmi_name_in_vendors("LENOVO")) tp->vendor = PCI_VENDOR_ID_LENOVO; else return; tp->bios_version_str = kstrdup(dmi_get_system_info(DMI_BIOS_VERSION), GFP_KERNEL); if (!tp->bios_version_str) return; tp->bios_model = tp->bios_version_str[0] | (tp->bios_version_str[1] << 8); /* * ThinkPad T23 or newer, A31 or newer, R50e or newer, * X32 or newer, all Z series; Some models must have an * up-to-date BIOS or they will not be detected. * * See http://thinkwiki.org/wiki/List_of_DMI_IDs */ while ((dev = dmi_find_device(DMI_DEV_TYPE_OEM_STRING, NULL, dev))) { if (sscanf(dev->name, "IBM ThinkPad Embedded Controller -[%17c", ec_fw_string) == 1) { ec_fw_string[sizeof(ec_fw_string) - 1] = 0; ec_fw_string[strcspn(ec_fw_string, " ]")] = 0; tp->ec_version_str = kstrdup(ec_fw_string, GFP_KERNEL); tp->ec_model = ec_fw_string[0] | (ec_fw_string[1] << 8); break; } } tp->model_str = kstrdup(dmi_get_system_info(DMI_PRODUCT_VERSION), GFP_KERNEL); if (tp->model_str && strnicmp(tp->model_str, "ThinkPad", 8) != 0) { kfree(tp->model_str); tp->model_str = NULL; } tp->nummodel_str = kstrdup(dmi_get_system_info(DMI_PRODUCT_NAME), GFP_KERNEL); } static int __init probe_for_thinkpad(void) { int is_thinkpad; if (acpi_disabled) return -ENODEV; /* * Non-ancient models have better DMI tagging, but very old models * don't. */ is_thinkpad = (thinkpad_id.model_str != NULL); /* ec is required because many other handles are relative to it */ TPACPI_ACPIHANDLE_INIT(ec); if (!ec_handle) { if (is_thinkpad) printk(TPACPI_ERR "Not yet supported ThinkPad detected!\n"); return -ENODEV; } /* * Risks a regression on very old machines, but reduces potential * false positives a damn great deal */ if (!is_thinkpad) is_thinkpad = (thinkpad_id.vendor == PCI_VENDOR_ID_IBM); if (!is_thinkpad && !force_load) return -ENODEV; return 0; } /* Module init, exit, parameters */ static struct ibm_init_struct ibms_init[] __initdata = { { .init = thinkpad_acpi_driver_init, .data = &thinkpad_acpi_driver_data, }, { .init = hotkey_init, .data = &hotkey_driver_data, }, { .init = bluetooth_init, .data = &bluetooth_driver_data, }, { .init = wan_init, .data = &wan_driver_data, }, #ifdef CONFIG_THINKPAD_ACPI_VIDEO { .init = video_init, .data = &video_driver_data, }, #endif { .init = light_init, .data = &light_driver_data, }, #ifdef CONFIG_THINKPAD_ACPI_DOCK { .init = dock_init, .data = &dock_driver_data[0], }, { .init = dock_init2, .data = &dock_driver_data[1], }, #endif #ifdef CONFIG_THINKPAD_ACPI_BAY { .init = bay_init, .data = &bay_driver_data, }, #endif { .init = cmos_init, .data = &cmos_driver_data, }, { .init = led_init, .data = &led_driver_data, }, { .init = beep_init, .data = &beep_driver_data, }, { .init = thermal_init, .data = &thermal_driver_data, }, { .data = &ecdump_driver_data, }, { .init = brightness_init, .data = &brightness_driver_data, }, { .data = &volume_driver_data, }, { .init = fan_init, .data = &fan_driver_data, }, }; static int __init set_ibm_param(const char *val, struct kernel_param *kp) { unsigned int i; struct ibm_struct *ibm; if (!kp || !kp->name || !val) return -EINVAL; for (i = 0; i < ARRAY_SIZE(ibms_init); i++) { ibm = ibms_init[i].data; WARN_ON(ibm == NULL); if (!ibm || !ibm->name) continue; if (strcmp(ibm->name, kp->name) == 0 && ibm->write) { if (strlen(val) > sizeof(ibms_init[i].param) - 2) return -ENOSPC; strcpy(ibms_init[i].param, val); strcat(ibms_init[i].param, ","); return 0; } } return -EINVAL; } module_param(experimental, int, 0); MODULE_PARM_DESC(experimental, "Enables experimental features when non-zero"); module_param_named(debug, dbg_level, uint, 0); MODULE_PARM_DESC(debug, "Sets debug level bit-mask"); module_param(force_load, bool, 0); MODULE_PARM_DESC(force_load, "Attempts to load the driver even on a " "mis-identified ThinkPad when true"); module_param_named(fan_control, fan_control_allowed, bool, 0); MODULE_PARM_DESC(fan_control, "Enables setting fan parameters features when true"); module_param_named(brightness_mode, brightness_mode, int, 0); MODULE_PARM_DESC(brightness_mode, "Selects brightness control strategy: " "0=auto, 1=EC, 2=CMOS, 3=both"); module_param(brightness_enable, uint, 0); MODULE_PARM_DESC(brightness_enable, "Enables backlight control when 1, disables when 0"); module_param(hotkey_report_mode, uint, 0); MODULE_PARM_DESC(hotkey_report_mode, "used for backwards compatibility with userspace, " "see documentation"); #define TPACPI_PARAM(feature) \ module_param_call(feature, set_ibm_param, NULL, NULL, 0); \ MODULE_PARM_DESC(feature, "Simulates thinkpad-acpi procfs command " \ "at module load, see documentation") TPACPI_PARAM(hotkey); TPACPI_PARAM(bluetooth); TPACPI_PARAM(video); TPACPI_PARAM(light); #ifdef CONFIG_THINKPAD_ACPI_DOCK TPACPI_PARAM(dock); #endif #ifdef CONFIG_THINKPAD_ACPI_BAY TPACPI_PARAM(bay); #endif /* CONFIG_THINKPAD_ACPI_BAY */ TPACPI_PARAM(cmos); TPACPI_PARAM(led); TPACPI_PARAM(beep); TPACPI_PARAM(ecdump); TPACPI_PARAM(brightness); TPACPI_PARAM(volume); TPACPI_PARAM(fan); static void thinkpad_acpi_module_exit(void) { struct ibm_struct *ibm, *itmp; tpacpi_lifecycle = TPACPI_LIFE_EXITING; list_for_each_entry_safe_reverse(ibm, itmp, &tpacpi_all_drivers, all_drivers) { ibm_exit(ibm); } dbg_printk(TPACPI_DBG_INIT, "finished subdriver exit path...\n"); if (tpacpi_inputdev) { if (tp_features.input_device_registered) input_unregister_device(tpacpi_inputdev); else input_free_device(tpacpi_inputdev); } if (tpacpi_hwmon) hwmon_device_unregister(tpacpi_hwmon); if (tp_features.sensors_pdev_attrs_registered) device_remove_file(&tpacpi_sensors_pdev->dev, &dev_attr_thinkpad_acpi_pdev_name); if (tpacpi_sensors_pdev) platform_device_unregister(tpacpi_sensors_pdev); if (tpacpi_pdev) platform_device_unregister(tpacpi_pdev); if (tp_features.sensors_pdrv_attrs_registered) tpacpi_remove_driver_attributes(&tpacpi_hwmon_pdriver.driver); if (tp_features.platform_drv_attrs_registered) tpacpi_remove_driver_attributes(&tpacpi_pdriver.driver); if (tp_features.sensors_pdrv_registered) platform_driver_unregister(&tpacpi_hwmon_pdriver); if (tp_features.platform_drv_registered) platform_driver_unregister(&tpacpi_pdriver); if (proc_dir) remove_proc_entry(TPACPI_PROC_DIR, acpi_root_dir); if (tpacpi_wq) destroy_workqueue(tpacpi_wq); kfree(thinkpad_id.bios_version_str); kfree(thinkpad_id.ec_version_str); kfree(thinkpad_id.model_str); } static int __init thinkpad_acpi_module_init(void) { int ret, i; tpacpi_lifecycle = TPACPI_LIFE_INIT; /* Parameter checking */ if (hotkey_report_mode > 2) return -EINVAL; /* Driver-level probe */ get_thinkpad_model_data(&thinkpad_id); ret = probe_for_thinkpad(); if (ret) { thinkpad_acpi_module_exit(); return ret; } /* Driver initialization */ TPACPI_ACPIHANDLE_INIT(ecrd); TPACPI_ACPIHANDLE_INIT(ecwr); tpacpi_wq = create_singlethread_workqueue(TPACPI_WORKQUEUE_NAME); if (!tpacpi_wq) { thinkpad_acpi_module_exit(); return -ENOMEM; } proc_dir = proc_mkdir(TPACPI_PROC_DIR, acpi_root_dir); if (!proc_dir) { printk(TPACPI_ERR "unable to create proc dir " TPACPI_PROC_DIR); thinkpad_acpi_module_exit(); return -ENODEV; } proc_dir->owner = THIS_MODULE; ret = platform_driver_register(&tpacpi_pdriver); if (ret) { printk(TPACPI_ERR "unable to register main platform driver\n"); thinkpad_acpi_module_exit(); return ret; } tp_features.platform_drv_registered = 1; ret = platform_driver_register(&tpacpi_hwmon_pdriver); if (ret) { printk(TPACPI_ERR "unable to register hwmon platform driver\n"); thinkpad_acpi_module_exit(); return ret; } tp_features.sensors_pdrv_registered = 1; ret = tpacpi_create_driver_attributes(&tpacpi_pdriver.driver); if (!ret) { tp_features.platform_drv_attrs_registered = 1; ret = tpacpi_create_driver_attributes( &tpacpi_hwmon_pdriver.driver); } if (ret) { printk(TPACPI_ERR "unable to create sysfs driver attributes\n"); thinkpad_acpi_module_exit(); return ret; } tp_features.sensors_pdrv_attrs_registered = 1; /* Device initialization */ tpacpi_pdev = platform_device_register_simple(TPACPI_DRVR_NAME, -1, NULL, 0); if (IS_ERR(tpacpi_pdev)) { ret = PTR_ERR(tpacpi_pdev); tpacpi_pdev = NULL; printk(TPACPI_ERR "unable to register platform device\n"); thinkpad_acpi_module_exit(); return ret; } tpacpi_sensors_pdev = platform_device_register_simple( TPACPI_HWMON_DRVR_NAME, -1, NULL, 0); if (IS_ERR(tpacpi_sensors_pdev)) { ret = PTR_ERR(tpacpi_sensors_pdev); tpacpi_sensors_pdev = NULL; printk(TPACPI_ERR "unable to register hwmon platform device\n"); thinkpad_acpi_module_exit(); return ret; } ret = device_create_file(&tpacpi_sensors_pdev->dev, &dev_attr_thinkpad_acpi_pdev_name); if (ret) { printk(TPACPI_ERR "unable to create sysfs hwmon device attributes\n"); thinkpad_acpi_module_exit(); return ret; } tp_features.sensors_pdev_attrs_registered = 1; tpacpi_hwmon = hwmon_device_register(&tpacpi_sensors_pdev->dev); if (IS_ERR(tpacpi_hwmon)) { ret = PTR_ERR(tpacpi_hwmon); tpacpi_hwmon = NULL; printk(TPACPI_ERR "unable to register hwmon device\n"); thinkpad_acpi_module_exit(); return ret; } mutex_init(&tpacpi_inputdev_send_mutex); tpacpi_inputdev = input_allocate_device(); if (!tpacpi_inputdev) { printk(TPACPI_ERR "unable to allocate input device\n"); thinkpad_acpi_module_exit(); return -ENOMEM; } else { /* Prepare input device, but don't register */ tpacpi_inputdev->name = "ThinkPad Extra Buttons"; tpacpi_inputdev->phys = TPACPI_DRVR_NAME "/input0"; tpacpi_inputdev->id.bustype = BUS_HOST; tpacpi_inputdev->id.vendor = (thinkpad_id.vendor) ? thinkpad_id.vendor : PCI_VENDOR_ID_IBM; tpacpi_inputdev->id.product = TPACPI_HKEY_INPUT_PRODUCT; tpacpi_inputdev->id.version = TPACPI_HKEY_INPUT_VERSION; } for (i = 0; i < ARRAY_SIZE(ibms_init); i++) { ret = ibm_init(&ibms_init[i]); if (ret >= 0 && *ibms_init[i].param) ret = ibms_init[i].data->write(ibms_init[i].param); if (ret < 0) { thinkpad_acpi_module_exit(); return ret; } } ret = input_register_device(tpacpi_inputdev); if (ret < 0) { printk(TPACPI_ERR "unable to register input device\n"); thinkpad_acpi_module_exit(); return ret; } else { tp_features.input_device_registered = 1; } tpacpi_lifecycle = TPACPI_LIFE_RUNNING; return 0; } /* Please remove this in year 2009 */ MODULE_ALIAS("ibm_acpi"); MODULE_ALIAS(TPACPI_DRVR_SHORTNAME); /* * DMI matching for module autoloading * * See http://thinkwiki.org/wiki/List_of_DMI_IDs * See http://thinkwiki.org/wiki/BIOS_Upgrade_Downloads * * Only models listed in thinkwiki will be supported, so add yours * if it is not there yet. */ #define IBM_BIOS_MODULE_ALIAS(__type) \ MODULE_ALIAS("dmi:bvnIBM:bvr" __type "ET??WW") /* Non-ancient thinkpads */ MODULE_ALIAS("dmi:bvnIBM:*:svnIBM:*:pvrThinkPad*:rvnIBM:*"); MODULE_ALIAS("dmi:bvnLENOVO:*:svnLENOVO:*:pvrThinkPad*:rvnLENOVO:*"); /* Ancient thinkpad BIOSes have to be identified by * BIOS type or model number, and there are far less * BIOS types than model numbers... */ IBM_BIOS_MODULE_ALIAS("I[B,D,H,I,M,N,O,T,W,V,Y,Z]"); IBM_BIOS_MODULE_ALIAS("1[0,3,6,8,A-G,I,K,M-P,S,T]"); IBM_BIOS_MODULE_ALIAS("K[U,X-Z]"); MODULE_AUTHOR("Borislav Deianov, Henrique de Moraes Holschuh"); MODULE_DESCRIPTION(TPACPI_DESC); MODULE_VERSION(TPACPI_VERSION); MODULE_LICENSE("GPL"); module_init(thinkpad_acpi_module_init); module_exit(thinkpad_acpi_module_exit);