Merge tag 'split-asm_system_h-for-linus-20120328' of git://git.kernel.org/pub/scm...
[linux-2.6.git] / arch / arm / mach-omap2 / board-omap3touchbook.c
1 /*
2  * linux/arch/arm/mach-omap2/board-omap3touchbook.c
3  *
4  * Copyright (C) 2009 Always Innovating
5  *
6  * Modified from mach-omap2/board-omap3beagleboard.c
7  *
8  * Initial code: GrĂ©goire Gentil, Tim Yamin
9  *
10  * This program is free software; you can redistribute it and/or modify
11  * it under the terms of the GNU General Public License version 2 as
12  * published by the Free Software Foundation.
13  */
14
15 #include <linux/kernel.h>
16 #include <linux/init.h>
17 #include <linux/platform_device.h>
18 #include <linux/delay.h>
19 #include <linux/err.h>
20 #include <linux/clk.h>
21 #include <linux/io.h>
22 #include <linux/leds.h>
23 #include <linux/gpio.h>
24 #include <linux/input.h>
25 #include <linux/gpio_keys.h>
26
27 #include <linux/mtd/mtd.h>
28 #include <linux/mtd/partitions.h>
29 #include <linux/mtd/nand.h>
30 #include <linux/mmc/host.h>
31
32 #include <plat/mcspi.h>
33 #include <linux/spi/spi.h>
34
35 #include <linux/spi/ads7846.h>
36
37 #include <linux/regulator/machine.h>
38 #include <linux/i2c/twl.h>
39
40 #include <mach/hardware.h>
41 #include <asm/mach-types.h>
42 #include <asm/mach/arch.h>
43 #include <asm/mach/map.h>
44 #include <asm/mach/flash.h>
45 #include <asm/system_info.h>
46
47 #include <plat/board.h>
48 #include "common.h"
49 #include <plat/gpmc.h>
50 #include <plat/nand.h>
51 #include <plat/usb.h>
52
53 #include "mux.h"
54 #include "hsmmc.h"
55 #include "common-board-devices.h"
56
57 #include <asm/setup.h>
58
59 #define OMAP3_AC_GPIO           136
60 #define OMAP3_TS_GPIO           162
61 #define TB_BL_PWM_TIMER         9
62 #define TB_KILL_POWER_GPIO      168
63
64 static unsigned long touchbook_revision;
65
66 static struct mtd_partition omap3touchbook_nand_partitions[] = {
67         /* All the partition sizes are listed in terms of NAND block size */
68         {
69                 .name           = "X-Loader",
70                 .offset         = 0,
71                 .size           = 4 * NAND_BLOCK_SIZE,
72                 .mask_flags     = MTD_WRITEABLE,        /* force read-only */
73         },
74         {
75                 .name           = "U-Boot",
76                 .offset         = MTDPART_OFS_APPEND,   /* Offset = 0x80000 */
77                 .size           = 15 * NAND_BLOCK_SIZE,
78                 .mask_flags     = MTD_WRITEABLE,        /* force read-only */
79         },
80         {
81                 .name           = "U-Boot Env",
82                 .offset         = MTDPART_OFS_APPEND,   /* Offset = 0x260000 */
83                 .size           = 1 * NAND_BLOCK_SIZE,
84         },
85         {
86                 .name           = "Kernel",
87                 .offset         = MTDPART_OFS_APPEND,   /* Offset = 0x280000 */
88                 .size           = 32 * NAND_BLOCK_SIZE,
89         },
90         {
91                 .name           = "File System",
92                 .offset         = MTDPART_OFS_APPEND,   /* Offset = 0x680000 */
93                 .size           = MTDPART_SIZ_FULL,
94         },
95 };
96
97 #include "sdram-micron-mt46h32m32lf-6.h"
98
99 static struct omap2_hsmmc_info mmc[] = {
100         {
101                 .mmc            = 1,
102                 .caps           = MMC_CAP_4_BIT_DATA | MMC_CAP_8_BIT_DATA,
103                 .gpio_wp        = 29,
104                 .deferred       = true,
105         },
106         {}      /* Terminator */
107 };
108
109 static struct regulator_consumer_supply touchbook_vmmc1_supply[] = {
110         REGULATOR_SUPPLY("vmmc", "omap_hsmmc.0"),
111 };
112
113 static struct regulator_consumer_supply touchbook_vsim_supply[] = {
114         REGULATOR_SUPPLY("vmmc_aux", "omap_hsmmc.0"),
115 };
116
117 static struct gpio_led gpio_leds[];
118
119 static int touchbook_twl_gpio_setup(struct device *dev,
120                 unsigned gpio, unsigned ngpio)
121 {
122         /* gpio + 0 is "mmc0_cd" (input/IRQ) */
123         mmc[0].gpio_cd = gpio + 0;
124         omap_hsmmc_late_init(mmc);
125
126         /* REVISIT: need ehci-omap hooks for external VBUS
127          * power switch and overcurrent detect
128          */
129         gpio_request_one(gpio + 1, GPIOF_IN, "EHCI_nOC");
130
131         /* TWL4030_GPIO_MAX + 0 == ledA, EHCI nEN_USB_PWR (out, active low) */
132         gpio_request_one(gpio + TWL4030_GPIO_MAX, GPIOF_OUT_INIT_LOW,
133                          "nEN_USB_PWR");
134
135         /* TWL4030_GPIO_MAX + 1 == ledB, PMU_STAT (out, active low LED) */
136         gpio_leds[2].gpio = gpio + TWL4030_GPIO_MAX + 1;
137
138         return 0;
139 }
140
141 static struct twl4030_gpio_platform_data touchbook_gpio_data = {
142         .gpio_base      = OMAP_MAX_GPIO_LINES,
143         .irq_base       = TWL4030_GPIO_IRQ_BASE,
144         .irq_end        = TWL4030_GPIO_IRQ_END,
145         .use_leds       = true,
146         .pullups        = BIT(1),
147         .pulldowns      = BIT(2) | BIT(6) | BIT(7) | BIT(8) | BIT(13)
148                                 | BIT(15) | BIT(16) | BIT(17),
149         .setup          = touchbook_twl_gpio_setup,
150 };
151
152 static struct regulator_consumer_supply touchbook_vdac_supply[] = {
153 {
154         .supply         = "vdac",
155 },
156 };
157
158 static struct regulator_consumer_supply touchbook_vdvi_supply[] = {
159 {
160         .supply         = "vdvi",
161 },
162 };
163
164 /* VMMC1 for MMC1 pins CMD, CLK, DAT0..DAT3 (20 mA, plus card == max 220 mA) */
165 static struct regulator_init_data touchbook_vmmc1 = {
166         .constraints = {
167                 .min_uV                 = 1850000,
168                 .max_uV                 = 3150000,
169                 .valid_modes_mask       = REGULATOR_MODE_NORMAL
170                                         | REGULATOR_MODE_STANDBY,
171                 .valid_ops_mask         = REGULATOR_CHANGE_VOLTAGE
172                                         | REGULATOR_CHANGE_MODE
173                                         | REGULATOR_CHANGE_STATUS,
174         },
175         .num_consumer_supplies  = ARRAY_SIZE(touchbook_vmmc1_supply),
176         .consumer_supplies      = touchbook_vmmc1_supply,
177 };
178
179 /* VSIM for MMC1 pins DAT4..DAT7 (2 mA, plus card == max 50 mA) */
180 static struct regulator_init_data touchbook_vsim = {
181         .constraints = {
182                 .min_uV                 = 1800000,
183                 .max_uV                 = 3000000,
184                 .valid_modes_mask       = REGULATOR_MODE_NORMAL
185                                         | REGULATOR_MODE_STANDBY,
186                 .valid_ops_mask         = REGULATOR_CHANGE_VOLTAGE
187                                         | REGULATOR_CHANGE_MODE
188                                         | REGULATOR_CHANGE_STATUS,
189         },
190         .num_consumer_supplies  = ARRAY_SIZE(touchbook_vsim_supply),
191         .consumer_supplies      = touchbook_vsim_supply,
192 };
193
194 static struct twl4030_platform_data touchbook_twldata = {
195         /* platform_data for children goes here */
196         .gpio           = &touchbook_gpio_data,
197         .vmmc1          = &touchbook_vmmc1,
198         .vsim           = &touchbook_vsim,
199 };
200
201 static struct i2c_board_info __initdata touchBook_i2c_boardinfo[] = {
202         {
203                 I2C_BOARD_INFO("bq27200", 0x55),
204         },
205 };
206
207 static int __init omap3_touchbook_i2c_init(void)
208 {
209         /* Standard TouchBook bus */
210         omap3_pmic_get_config(&touchbook_twldata,
211                         TWL_COMMON_PDATA_USB | TWL_COMMON_PDATA_AUDIO,
212                         TWL_COMMON_REGULATOR_VDAC | TWL_COMMON_REGULATOR_VPLL2);
213
214         touchbook_twldata.vdac->num_consumer_supplies =
215                                         ARRAY_SIZE(touchbook_vdac_supply);
216         touchbook_twldata.vdac->consumer_supplies = touchbook_vdac_supply;
217
218         touchbook_twldata.vpll2->constraints.name = "VDVI";
219         touchbook_twldata.vpll2->num_consumer_supplies =
220                                         ARRAY_SIZE(touchbook_vdvi_supply);
221         touchbook_twldata.vpll2->consumer_supplies = touchbook_vdvi_supply;
222
223         omap3_pmic_init("twl4030", &touchbook_twldata);
224         /* Additional TouchBook bus */
225         omap_register_i2c_bus(3, 100, touchBook_i2c_boardinfo,
226                         ARRAY_SIZE(touchBook_i2c_boardinfo));
227
228         return 0;
229 }
230
231 static struct ads7846_platform_data ads7846_pdata = {
232         .x_min                  = 100,
233         .y_min                  = 265,
234         .x_max                  = 3950,
235         .y_max                  = 3750,
236         .x_plate_ohms           = 40,
237         .pressure_max           = 255,
238         .debounce_max           = 10,
239         .debounce_tol           = 5,
240         .debounce_rep           = 1,
241         .gpio_pendown           = OMAP3_TS_GPIO,
242         .keep_vref_on           = 1,
243 };
244
245 static struct gpio_led gpio_leds[] = {
246         {
247                 .name                   = "touchbook::usr0",
248                 .default_trigger        = "heartbeat",
249                 .gpio                   = 150,
250         },
251         {
252                 .name                   = "touchbook::usr1",
253                 .default_trigger        = "mmc0",
254                 .gpio                   = 149,
255         },
256         {
257                 .name                   = "touchbook::pmu_stat",
258                 .gpio                   = -EINVAL,      /* gets replaced */
259                 .active_low             = true,
260         },
261 };
262
263 static struct gpio_led_platform_data gpio_led_info = {
264         .leds           = gpio_leds,
265         .num_leds       = ARRAY_SIZE(gpio_leds),
266 };
267
268 static struct platform_device leds_gpio = {
269         .name   = "leds-gpio",
270         .id     = -1,
271         .dev    = {
272                 .platform_data  = &gpio_led_info,
273         },
274 };
275
276 static struct gpio_keys_button gpio_buttons[] = {
277         {
278                 .code                   = BTN_EXTRA,
279                 .gpio                   = 7,
280                 .desc                   = "user",
281                 .wakeup                 = 1,
282         },
283         {
284                 .code                   = KEY_POWER,
285                 .gpio                   = 183,
286                 .desc                   = "power",
287                 .wakeup                 = 1,
288         },
289 };
290
291 static struct gpio_keys_platform_data gpio_key_info = {
292         .buttons        = gpio_buttons,
293         .nbuttons       = ARRAY_SIZE(gpio_buttons),
294 };
295
296 static struct platform_device keys_gpio = {
297         .name   = "gpio-keys",
298         .id     = -1,
299         .dev    = {
300                 .platform_data  = &gpio_key_info,
301         },
302 };
303
304 #ifdef CONFIG_OMAP_MUX
305 static struct omap_board_mux board_mux[] __initdata = {
306         { .reg_offset = OMAP_MUX_TERMINATOR },
307 };
308 #endif
309
310 static struct platform_device *omap3_touchbook_devices[] __initdata = {
311         &leds_gpio,
312         &keys_gpio,
313 };
314
315 static const struct usbhs_omap_board_data usbhs_bdata __initconst = {
316
317         .port_mode[0] = OMAP_EHCI_PORT_MODE_PHY,
318         .port_mode[1] = OMAP_EHCI_PORT_MODE_PHY,
319         .port_mode[2] = OMAP_USBHS_PORT_MODE_UNUSED,
320
321         .phy_reset  = true,
322         .reset_gpio_port[0]  = -EINVAL,
323         .reset_gpio_port[1]  = 147,
324         .reset_gpio_port[2]  = -EINVAL
325 };
326
327 static void omap3_touchbook_poweroff(void)
328 {
329         int pwr_off = TB_KILL_POWER_GPIO;
330
331         if (gpio_request_one(pwr_off, GPIOF_OUT_INIT_LOW, "DVI reset") < 0)
332                 printk(KERN_ERR "Unable to get kill power GPIO\n");
333 }
334
335 static int __init early_touchbook_revision(char *p)
336 {
337         if (!p)
338                 return 0;
339
340         return strict_strtoul(p, 10, &touchbook_revision);
341 }
342 early_param("tbr", early_touchbook_revision);
343
344 static void __init omap3_touchbook_init(void)
345 {
346         omap3_mux_init(board_mux, OMAP_PACKAGE_CBB);
347
348         pm_power_off = omap3_touchbook_poweroff;
349
350         if (system_rev >= 0x20 && system_rev <= 0x34301000) {
351                 omap_mux_init_gpio(23, OMAP_PIN_INPUT);
352                 mmc[0].gpio_wp = 23;
353         } else {
354                 omap_mux_init_gpio(29, OMAP_PIN_INPUT);
355         }
356         omap_hsmmc_init(mmc);
357
358         omap3_touchbook_i2c_init();
359         platform_add_devices(omap3_touchbook_devices,
360                         ARRAY_SIZE(omap3_touchbook_devices));
361         omap_serial_init();
362         omap_sdrc_init(mt46h32m32lf6_sdrc_params,
363                                   mt46h32m32lf6_sdrc_params);
364
365         omap_mux_init_gpio(170, OMAP_PIN_INPUT);
366         /* REVISIT leave DVI powered down until it's needed ... */
367         gpio_request_one(176, GPIOF_OUT_INIT_HIGH, "DVI_nPD");
368
369         /* Touchscreen and accelerometer */
370         omap_ads7846_init(4, OMAP3_TS_GPIO, 310, &ads7846_pdata);
371         usb_musb_init(NULL);
372         usbhs_init(&usbhs_bdata);
373         omap_nand_flash_init(NAND_BUSWIDTH_16, omap3touchbook_nand_partitions,
374                              ARRAY_SIZE(omap3touchbook_nand_partitions));
375
376         /* Ensure SDRC pins are mux'd for self-refresh */
377         omap_mux_init_signal("sdrc_cke0", OMAP_PIN_OUTPUT);
378         omap_mux_init_signal("sdrc_cke1", OMAP_PIN_OUTPUT);
379 }
380
381 MACHINE_START(TOUCHBOOK, "OMAP3 touchbook Board")
382         /* Maintainer: Gregoire Gentil - http://www.alwaysinnovating.com */
383         .atag_offset    = 0x100,
384         .reserve        = omap_reserve,
385         .map_io         = omap3_map_io,
386         .init_early     = omap3430_init_early,
387         .init_irq       = omap3_init_irq,
388         .handle_irq     = omap3_intc_handle_irq,
389         .init_machine   = omap3_touchbook_init,
390         .timer          = &omap3_secure_timer,
391         .restart        = omap_prcm_restart,
392 MACHINE_END