Merge tag 'dt-for-linus-2' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
[linux-3.10.git] / arch / arm / mach-omap2 / usb-host.c
index b2a2dd7..aa27d7f 100644 (file)
 #include <linux/platform_device.h>
 #include <linux/slab.h>
 #include <linux/dma-mapping.h>
-
-#include <asm/io.h>
-
-#include <mach/hardware.h>
-#include <mach/irqs.h>
-#include <plat/usb.h>
-#include <plat/omap_device.h>
-
+#include <linux/regulator/machine.h>
+#include <linux/regulator/fixed.h>
+#include <linux/string.h>
+#include <linux/io.h>
+#include <linux/gpio.h>
+#include <linux/usb/phy.h>
+
+#include "soc.h"
+#include "omap_device.h"
 #include "mux.h"
+#include "usb.h"
 
 #ifdef CONFIG_MFD_OMAP_USB_HOST
 
 #define        USBHS_UHH_HWMODNAME     "usb_host_hs"
 #define USBHS_TLL_HWMODNAME    "usb_tll_hs"
 
-static struct usbhs_omap_platform_data         usbhs_data;
-static struct usbtll_omap_platform_data                usbtll_data;
-static struct ehci_hcd_omap_platform_data      ehci_data;
-static struct ohci_hcd_omap_platform_data      ohci_data;
-
-static struct omap_device_pm_latency omap_uhhtll_latency[] = {
-         {
-               .deactivate_func = omap_device_idle_hwmods,
-               .activate_func   = omap_device_enable_hwmods,
-               .flags = OMAP_DEVICE_LATENCY_AUTO_ADJUST,
-         },
-};
-
 /* MUX settings for EHCI pins */
 /*
  * setup_ehci_io_mux - initialize IO pad mux for USBHOST
@@ -487,29 +476,19 @@ void __init setup_4430ohci_io_mux(const enum usbhs_omap_port_mode *port_mode)
        }
 }
 
-void __init usbhs_init(const struct usbhs_omap_board_data *pdata)
+void __init usbhs_init(struct usbhs_omap_platform_data *pdata)
 {
        struct omap_hwmod       *uhh_hwm, *tll_hwm;
        struct platform_device  *pdev;
        int                     bus_id = -1;
-       int                     i;
-
-       for (i = 0; i < OMAP3_HS_USB_PORTS; i++) {
-               usbhs_data.port_mode[i] = pdata->port_mode[i];
-               usbtll_data.port_mode[i] = pdata->port_mode[i];
-               ohci_data.port_mode[i] = pdata->port_mode[i];
-               ehci_data.port_mode[i] = pdata->port_mode[i];
-               ehci_data.reset_gpio_port[i] = pdata->reset_gpio_port[i];
-               ehci_data.regulator[i] = pdata->regulator[i];
-       }
-       ehci_data.phy_reset = pdata->phy_reset;
-       ohci_data.es2_compatibility = pdata->es2_compatibility;
-       usbhs_data.ehci_data = &ehci_data;
-       usbhs_data.ohci_data = &ohci_data;
 
        if (cpu_is_omap34xx()) {
                setup_ehci_io_mux(pdata->port_mode);
                setup_ohci_io_mux(pdata->port_mode);
+
+               if (omap_rev() <= OMAP3430_REV_ES2_1)
+                       pdata->single_ulpi_bypass = true;
+
        } else if (cpu_is_omap44xx()) {
                setup_4430ehci_io_mux(pdata->port_mode);
                setup_4430ohci_io_mux(pdata->port_mode);
@@ -528,9 +507,7 @@ void __init usbhs_init(const struct usbhs_omap_board_data *pdata)
        }
 
        pdev = omap_device_build(OMAP_USBTLL_DEVICE, bus_id, tll_hwm,
-                               &usbtll_data, sizeof(usbtll_data),
-                               omap_uhhtll_latency,
-                               ARRAY_SIZE(omap_uhhtll_latency), false);
+                               pdata, sizeof(*pdata));
        if (IS_ERR(pdev)) {
                pr_err("Could not build hwmod device %s\n",
                       USBHS_TLL_HWMODNAME);
@@ -538,9 +515,7 @@ void __init usbhs_init(const struct usbhs_omap_board_data *pdata)
        }
 
        pdev = omap_device_build(OMAP_USBHS_DEVICE, bus_id, uhh_hwm,
-                               &usbhs_data, sizeof(usbhs_data),
-                               omap_uhhtll_latency,
-                               ARRAY_SIZE(omap_uhhtll_latency), false);
+                               pdata, sizeof(*pdata));
        if (IS_ERR(pdev)) {
                pr_err("Could not build hwmod devices %s\n",
                       USBHS_UHH_HWMODNAME);
@@ -550,8 +525,160 @@ void __init usbhs_init(const struct usbhs_omap_board_data *pdata)
 
 #else
 
-void __init usbhs_init(const struct usbhs_omap_board_data *pdata)
+void __init usbhs_init(struct usbhs_omap_platform_data *pdata)
 {
 }
 
 #endif
+
+/* Template for PHY regulators */
+static struct fixed_voltage_config hsusb_reg_config = {
+       /* .supply_name filled later */
+       .microvolts = 3300000,
+       .gpio = -1,             /* updated later */
+       .startup_delay = 70000, /* 70msec */
+       .enable_high = 1,       /* updated later */
+       .enabled_at_boot = 0,   /* keep in RESET */
+       /* .init_data filled later */
+};
+
+static const char *nop_name = "nop_usb_xceiv"; /* NOP PHY driver */
+static const char *reg_name = "reg-fixed-voltage"; /* Regulator driver */
+
+/**
+ * usbhs_add_regulator - Add a gpio based fixed voltage regulator device
+ * @name: name for the regulator
+ * @dev_id: device id of the device this regulator supplies power to
+ * @dev_supply: supply name that the device expects
+ * @gpio: GPIO number
+ * @polarity: 1 - Active high, 0 - Active low
+ */
+static int usbhs_add_regulator(char *name, char *dev_id, char *dev_supply,
+                                               int gpio, int polarity)
+{
+       struct regulator_consumer_supply *supplies;
+       struct regulator_init_data *reg_data;
+       struct fixed_voltage_config *config;
+       struct platform_device *pdev;
+       int ret;
+
+       supplies = kzalloc(sizeof(*supplies), GFP_KERNEL);
+       if (!supplies)
+               return -ENOMEM;
+
+       supplies->supply = dev_supply;
+       supplies->dev_name = dev_id;
+
+       reg_data = kzalloc(sizeof(*reg_data), GFP_KERNEL);
+       if (!reg_data)
+               return -ENOMEM;
+
+       reg_data->constraints.valid_ops_mask = REGULATOR_CHANGE_STATUS;
+       reg_data->consumer_supplies = supplies;
+       reg_data->num_consumer_supplies = 1;
+
+       config = kmemdup(&hsusb_reg_config, sizeof(hsusb_reg_config),
+                       GFP_KERNEL);
+       if (!config)
+               return -ENOMEM;
+
+       config->supply_name = name;
+       config->gpio = gpio;
+       config->enable_high = polarity;
+       config->init_data = reg_data;
+
+       /* create a regulator device */
+       pdev = kzalloc(sizeof(*pdev), GFP_KERNEL);
+       if (!pdev)
+               return -ENOMEM;
+
+       pdev->id = PLATFORM_DEVID_AUTO;
+       pdev->name = reg_name;
+       pdev->dev.platform_data = config;
+
+       ret = platform_device_register(pdev);
+       if (ret)
+               pr_err("%s: Failed registering regulator %s for %s\n",
+                               __func__, name, dev_id);
+
+       return ret;
+}
+
+int usbhs_init_phys(struct usbhs_phy_data *phy, int num_phys)
+{
+       char *rail_name;
+       int i, len;
+       struct platform_device *pdev;
+       char *phy_id;
+
+       /* the phy_id will be something like "nop_usb_xceiv.1" */
+       len = strlen(nop_name) + 3; /* 3 -> ".1" and NULL terminator */
+
+       for (i = 0; i < num_phys; i++) {
+
+               if (!phy->port) {
+                       pr_err("%s: Invalid port 0. Must start from 1\n",
+                                               __func__);
+                       continue;
+               }
+
+               /* do we need a NOP PHY device ? */
+               if (!gpio_is_valid(phy->reset_gpio) &&
+                       !gpio_is_valid(phy->vcc_gpio))
+                       continue;
+
+               /* create a NOP PHY device */
+               pdev = kzalloc(sizeof(*pdev), GFP_KERNEL);
+               if (!pdev)
+                       return -ENOMEM;
+
+               pdev->id = phy->port;
+               pdev->name = nop_name;
+               pdev->dev.platform_data = phy->platform_data;
+
+               phy_id = kmalloc(len, GFP_KERNEL);
+               if (!phy_id)
+                       return -ENOMEM;
+
+               scnprintf(phy_id, len, "nop_usb_xceiv.%d\n",
+                                       pdev->id);
+
+               if (platform_device_register(pdev)) {
+                       pr_err("%s: Failed to register device %s\n",
+                               __func__,  phy_id);
+                       continue;
+               }
+
+               usb_bind_phy("ehci-omap.0", phy->port - 1, phy_id);
+
+               /* Do we need RESET regulator ? */
+               if (gpio_is_valid(phy->reset_gpio)) {
+
+                       rail_name = kmalloc(13, GFP_KERNEL);
+                       if (!rail_name)
+                               return -ENOMEM;
+
+                       scnprintf(rail_name, 13, "hsusb%d_reset", phy->port);
+
+                       usbhs_add_regulator(rail_name, phy_id, "reset",
+                                               phy->reset_gpio, 1);
+               }
+
+               /* Do we need VCC regulator ? */
+               if (gpio_is_valid(phy->vcc_gpio)) {
+
+                       rail_name = kmalloc(13, GFP_KERNEL);
+                       if (!rail_name)
+                               return -ENOMEM;
+
+                       scnprintf(rail_name, 13, "hsusb%d_vcc", phy->port);
+
+                       usbhs_add_regulator(rail_name, phy_id, "vcc",
+                                       phy->vcc_gpio, phy->vcc_polarity);
+               }
+
+               phy++;
+       }
+
+       return 0;
+}