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