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: Grégoire 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 #include <linux/usb/phy.h>
32
33 #include <linux/platform_data/spi-omap2-mcspi.h>
34 #include <linux/spi/spi.h>
35
36 #include <linux/spi/ads7846.h>
37
38 #include <linux/regulator/machine.h>
39 #include <linux/i2c/twl.h>
40
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 "common.h"
48 #include "gpmc.h"
49 #include <linux/platform_data/mtd-nand-omap2.h>
50
51 #include "mux.h"
52 #include "hsmmc.h"
53 #include "board-flash.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 #define NAND_CS 0
64
65 static unsigned long touchbook_revision;
66
67 static struct mtd_partition omap3touchbook_nand_partitions[] = {
68 /* All the partition sizes are listed in terms of NAND block size */
69 {
70 .name = "X-Loader",
71 .offset = 0,
72 .size = 4 * NAND_BLOCK_SIZE,
73 .mask_flags = MTD_WRITEABLE, /* force read-only */
74 },
75 {
76 .name = "U-Boot",
77 .offset = MTDPART_OFS_APPEND, /* Offset = 0x80000 */
78 .size = 15 * NAND_BLOCK_SIZE,
79 .mask_flags = MTD_WRITEABLE, /* force read-only */
80 },
81 {
82 .name = "U-Boot Env",
83 .offset = MTDPART_OFS_APPEND, /* Offset = 0x260000 */
84 .size = 1 * NAND_BLOCK_SIZE,
85 },
86 {
87 .name = "Kernel",
88 .offset = MTDPART_OFS_APPEND, /* Offset = 0x280000 */
89 .size = 32 * NAND_BLOCK_SIZE,
90 },
91 {
92 .name = "File System",
93 .offset = MTDPART_OFS_APPEND, /* Offset = 0x680000 */
94 .size = MTDPART_SIZ_FULL,
95 },
96 };
97
98 #include "sdram-micron-mt46h32m32lf-6.h"
99
100 static struct omap2_hsmmc_info mmc[] = {
101 {
102 .mmc = 1,
103 .caps = MMC_CAP_4_BIT_DATA | MMC_CAP_8_BIT_DATA,
104 .gpio_wp = 29,
105 .deferred = true,
106 },
107 {} /* Terminator */
108 };
109
110 static struct regulator_consumer_supply touchbook_vmmc1_supply[] = {
111 REGULATOR_SUPPLY("vmmc", "omap_hsmmc.0"),
112 };
113
114 static struct regulator_consumer_supply touchbook_vsim_supply[] = {
115 REGULATOR_SUPPLY("vmmc_aux", "omap_hsmmc.0"),
116 };
117
118 static struct gpio_led gpio_leds[];
119
touchbook_twl_gpio_setup(struct device * dev,unsigned gpio,unsigned ngpio)120 static int touchbook_twl_gpio_setup(struct device *dev,
121 unsigned gpio, unsigned ngpio)
122 {
123 /* gpio + 0 is "mmc0_cd" (input/IRQ) */
124 mmc[0].gpio_cd = gpio + 0;
125 omap_hsmmc_late_init(mmc);
126
127 /* REVISIT: need ehci-omap hooks for external VBUS
128 * power switch and overcurrent detect
129 */
130 gpio_request_one(gpio + 1, GPIOF_IN, "EHCI_nOC");
131
132 /* TWL4030_GPIO_MAX + 0 == ledA, EHCI nEN_USB_PWR (out, active low) */
133 gpio_request_one(gpio + TWL4030_GPIO_MAX, GPIOF_OUT_INIT_LOW,
134 "nEN_USB_PWR");
135
136 /* TWL4030_GPIO_MAX + 1 == ledB, PMU_STAT (out, active low LED) */
137 gpio_leds[2].gpio = gpio + TWL4030_GPIO_MAX + 1;
138
139 return 0;
140 }
141
142 static struct twl4030_gpio_platform_data touchbook_gpio_data = {
143 .use_leds = true,
144 .pullups = BIT(1),
145 .pulldowns = BIT(2) | BIT(6) | BIT(7) | BIT(8) | BIT(13)
146 | BIT(15) | BIT(16) | BIT(17),
147 .setup = touchbook_twl_gpio_setup,
148 };
149
150 static struct regulator_consumer_supply touchbook_vdac_supply[] = {
151 {
152 .supply = "vdac",
153 },
154 };
155
156 static struct regulator_consumer_supply touchbook_vdvi_supply[] = {
157 {
158 .supply = "vdvi",
159 },
160 };
161
162 /* VMMC1 for MMC1 pins CMD, CLK, DAT0..DAT3 (20 mA, plus card == max 220 mA) */
163 static struct regulator_init_data touchbook_vmmc1 = {
164 .constraints = {
165 .min_uV = 1850000,
166 .max_uV = 3150000,
167 .valid_modes_mask = REGULATOR_MODE_NORMAL
168 | REGULATOR_MODE_STANDBY,
169 .valid_ops_mask = REGULATOR_CHANGE_VOLTAGE
170 | REGULATOR_CHANGE_MODE
171 | REGULATOR_CHANGE_STATUS,
172 },
173 .num_consumer_supplies = ARRAY_SIZE(touchbook_vmmc1_supply),
174 .consumer_supplies = touchbook_vmmc1_supply,
175 };
176
177 /* VSIM for MMC1 pins DAT4..DAT7 (2 mA, plus card == max 50 mA) */
178 static struct regulator_init_data touchbook_vsim = {
179 .constraints = {
180 .min_uV = 1800000,
181 .max_uV = 3000000,
182 .valid_modes_mask = REGULATOR_MODE_NORMAL
183 | REGULATOR_MODE_STANDBY,
184 .valid_ops_mask = REGULATOR_CHANGE_VOLTAGE
185 | REGULATOR_CHANGE_MODE
186 | REGULATOR_CHANGE_STATUS,
187 },
188 .num_consumer_supplies = ARRAY_SIZE(touchbook_vsim_supply),
189 .consumer_supplies = touchbook_vsim_supply,
190 };
191
192 static struct twl4030_platform_data touchbook_twldata = {
193 /* platform_data for children goes here */
194 .gpio = &touchbook_gpio_data,
195 .vmmc1 = &touchbook_vmmc1,
196 .vsim = &touchbook_vsim,
197 };
198
199 static struct i2c_board_info __initdata touchBook_i2c_boardinfo[] = {
200 {
201 I2C_BOARD_INFO("bq27200", 0x55),
202 },
203 };
204
omap3_touchbook_i2c_init(void)205 static int __init omap3_touchbook_i2c_init(void)
206 {
207 /* Standard TouchBook bus */
208 omap3_pmic_get_config(&touchbook_twldata,
209 TWL_COMMON_PDATA_USB | TWL_COMMON_PDATA_AUDIO,
210 TWL_COMMON_REGULATOR_VDAC | TWL_COMMON_REGULATOR_VPLL2);
211
212 touchbook_twldata.vdac->num_consumer_supplies =
213 ARRAY_SIZE(touchbook_vdac_supply);
214 touchbook_twldata.vdac->consumer_supplies = touchbook_vdac_supply;
215
216 touchbook_twldata.vpll2->constraints.name = "VDVI";
217 touchbook_twldata.vpll2->num_consumer_supplies =
218 ARRAY_SIZE(touchbook_vdvi_supply);
219 touchbook_twldata.vpll2->consumer_supplies = touchbook_vdvi_supply;
220
221 omap3_pmic_init("twl4030", &touchbook_twldata);
222 /* Additional TouchBook bus */
223 omap_register_i2c_bus(3, 100, touchBook_i2c_boardinfo,
224 ARRAY_SIZE(touchBook_i2c_boardinfo));
225
226 return 0;
227 }
228
229 static struct ads7846_platform_data ads7846_pdata = {
230 .x_min = 100,
231 .y_min = 265,
232 .x_max = 3950,
233 .y_max = 3750,
234 .x_plate_ohms = 40,
235 .pressure_max = 255,
236 .debounce_max = 10,
237 .debounce_tol = 5,
238 .debounce_rep = 1,
239 .gpio_pendown = OMAP3_TS_GPIO,
240 .keep_vref_on = 1,
241 };
242
243 static struct gpio_led gpio_leds[] = {
244 {
245 .name = "touchbook::usr0",
246 .default_trigger = "heartbeat",
247 .gpio = 150,
248 },
249 {
250 .name = "touchbook::usr1",
251 .default_trigger = "mmc0",
252 .gpio = 149,
253 },
254 {
255 .name = "touchbook::pmu_stat",
256 .gpio = -EINVAL, /* gets replaced */
257 .active_low = true,
258 },
259 };
260
261 static struct gpio_led_platform_data gpio_led_info = {
262 .leds = gpio_leds,
263 .num_leds = ARRAY_SIZE(gpio_leds),
264 };
265
266 static struct platform_device leds_gpio = {
267 .name = "leds-gpio",
268 .id = -1,
269 .dev = {
270 .platform_data = &gpio_led_info,
271 },
272 };
273
274 static struct gpio_keys_button gpio_buttons[] = {
275 {
276 .code = BTN_EXTRA,
277 .gpio = 7,
278 .desc = "user",
279 .wakeup = 1,
280 },
281 {
282 .code = KEY_POWER,
283 .gpio = 183,
284 .desc = "power",
285 .wakeup = 1,
286 },
287 };
288
289 static struct gpio_keys_platform_data gpio_key_info = {
290 .buttons = gpio_buttons,
291 .nbuttons = ARRAY_SIZE(gpio_buttons),
292 };
293
294 static struct platform_device keys_gpio = {
295 .name = "gpio-keys",
296 .id = -1,
297 .dev = {
298 .platform_data = &gpio_key_info,
299 },
300 };
301
302 #ifdef CONFIG_OMAP_MUX
303 static struct omap_board_mux board_mux[] __initdata = {
304 { .reg_offset = OMAP_MUX_TERMINATOR },
305 };
306 #endif
307
308 static struct usbhs_phy_data phy_data[] __initdata = {
309 {
310 .port = 2,
311 .reset_gpio = 147,
312 .vcc_gpio = -EINVAL,
313 },
314 };
315
316 static struct platform_device *omap3_touchbook_devices[] __initdata = {
317 &leds_gpio,
318 &keys_gpio,
319 };
320
321 static struct usbhs_omap_platform_data usbhs_bdata __initdata = {
322 .port_mode[0] = OMAP_EHCI_PORT_MODE_PHY,
323 .port_mode[1] = OMAP_EHCI_PORT_MODE_PHY,
324 };
325
omap3_touchbook_poweroff(void)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
early_touchbook_revision(char * p)334 static int __init early_touchbook_revision(char *p)
335 {
336 if (!p)
337 return 0;
338
339 return kstrtoul(p, 10, &touchbook_revision);
340 }
341 early_param("tbr", early_touchbook_revision);
342
omap3_touchbook_init(void)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_bind_phy("musb-hdrc.0.auto", 0, "twl4030_usb");
371 usb_musb_init(NULL);
372
373 usbhs_init_phys(phy_data, ARRAY_SIZE(phy_data));
374 usbhs_init(&usbhs_bdata);
375 board_nand_init(omap3touchbook_nand_partitions,
376 ARRAY_SIZE(omap3touchbook_nand_partitions), NAND_CS,
377 NAND_BUSWIDTH_16, NULL);
378
379 /* Ensure SDRC pins are mux'd for self-refresh */
380 omap_mux_init_signal("sdrc_cke0", OMAP_PIN_OUTPUT);
381 omap_mux_init_signal("sdrc_cke1", OMAP_PIN_OUTPUT);
382 }
383
384 MACHINE_START(TOUCHBOOK, "OMAP3 touchbook Board")
385 /* Maintainer: Gregoire Gentil - http://www.alwaysinnovating.com */
386 .atag_offset = 0x100,
387 .reserve = omap_reserve,
388 .map_io = omap3_map_io,
389 .init_early = omap3430_init_early,
390 .init_irq = omap3_init_irq,
391 .init_machine = omap3_touchbook_init,
392 .init_late = omap3430_init_late,
393 .init_time = omap3_secure_sync32k_timer_init,
394 .restart = omap3xxx_restart,
395 MACHINE_END
396