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
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 },
104 {} /* Terminator */
105 };
106
107 static struct regulator_consumer_supply touchbook_vmmc1_supply[] = {
108 REGULATOR_SUPPLY("vmmc", "omap_hsmmc.0"),
109 };
110
111 static struct regulator_consumer_supply touchbook_vsim_supply[] = {
112 REGULATOR_SUPPLY("vmmc_aux", "omap_hsmmc.0"),
113 };
114
115 static struct gpio_led gpio_leds[];
116
touchbook_twl_gpio_setup(struct device * dev,unsigned gpio,unsigned ngpio)117 static int touchbook_twl_gpio_setup(struct device *dev,
118 unsigned gpio, unsigned ngpio)
119 {
120 if (system_rev >= 0x20 && system_rev <= 0x34301000) {
121 omap_mux_init_gpio(23, OMAP_PIN_INPUT);
122 mmc[0].gpio_wp = 23;
123 } else {
124 omap_mux_init_gpio(29, OMAP_PIN_INPUT);
125 }
126 /* gpio + 0 is "mmc0_cd" (input/IRQ) */
127 mmc[0].gpio_cd = gpio + 0;
128 omap2_hsmmc_init(mmc);
129
130 /* REVISIT: need ehci-omap hooks for external VBUS
131 * power switch and overcurrent detect
132 */
133 gpio_request_one(gpio + 1, GPIOF_IN, "EHCI_nOC");
134
135 /* TWL4030_GPIO_MAX + 0 == ledA, EHCI nEN_USB_PWR (out, active low) */
136 gpio_request_one(gpio + TWL4030_GPIO_MAX, GPIOF_OUT_INIT_LOW,
137 "nEN_USB_PWR");
138
139 /* TWL4030_GPIO_MAX + 1 == ledB, PMU_STAT (out, active low LED) */
140 gpio_leds[2].gpio = gpio + TWL4030_GPIO_MAX + 1;
141
142 return 0;
143 }
144
145 static struct twl4030_gpio_platform_data touchbook_gpio_data = {
146 .gpio_base = OMAP_MAX_GPIO_LINES,
147 .irq_base = TWL4030_GPIO_IRQ_BASE,
148 .irq_end = TWL4030_GPIO_IRQ_END,
149 .use_leds = true,
150 .pullups = BIT(1),
151 .pulldowns = BIT(2) | BIT(6) | BIT(7) | BIT(8) | BIT(13)
152 | BIT(15) | BIT(16) | BIT(17),
153 .setup = touchbook_twl_gpio_setup,
154 };
155
156 static struct regulator_consumer_supply touchbook_vdac_supply[] = {
157 {
158 .supply = "vdac",
159 },
160 };
161
162 static struct regulator_consumer_supply touchbook_vdvi_supply[] = {
163 {
164 .supply = "vdvi",
165 },
166 };
167
168 /* VMMC1 for MMC1 pins CMD, CLK, DAT0..DAT3 (20 mA, plus card == max 220 mA) */
169 static struct regulator_init_data touchbook_vmmc1 = {
170 .constraints = {
171 .min_uV = 1850000,
172 .max_uV = 3150000,
173 .valid_modes_mask = REGULATOR_MODE_NORMAL
174 | REGULATOR_MODE_STANDBY,
175 .valid_ops_mask = REGULATOR_CHANGE_VOLTAGE
176 | REGULATOR_CHANGE_MODE
177 | REGULATOR_CHANGE_STATUS,
178 },
179 .num_consumer_supplies = ARRAY_SIZE(touchbook_vmmc1_supply),
180 .consumer_supplies = touchbook_vmmc1_supply,
181 };
182
183 /* VSIM for MMC1 pins DAT4..DAT7 (2 mA, plus card == max 50 mA) */
184 static struct regulator_init_data touchbook_vsim = {
185 .constraints = {
186 .min_uV = 1800000,
187 .max_uV = 3000000,
188 .valid_modes_mask = REGULATOR_MODE_NORMAL
189 | REGULATOR_MODE_STANDBY,
190 .valid_ops_mask = REGULATOR_CHANGE_VOLTAGE
191 | REGULATOR_CHANGE_MODE
192 | REGULATOR_CHANGE_STATUS,
193 },
194 .num_consumer_supplies = ARRAY_SIZE(touchbook_vsim_supply),
195 .consumer_supplies = touchbook_vsim_supply,
196 };
197
198 static struct twl4030_platform_data touchbook_twldata = {
199 /* platform_data for children goes here */
200 .gpio = &touchbook_gpio_data,
201 .vmmc1 = &touchbook_vmmc1,
202 .vsim = &touchbook_vsim,
203 };
204
205 static struct i2c_board_info __initdata touchBook_i2c_boardinfo[] = {
206 {
207 I2C_BOARD_INFO("bq27200", 0x55),
208 },
209 };
210
omap3_touchbook_i2c_init(void)211 static int __init omap3_touchbook_i2c_init(void)
212 {
213 /* Standard TouchBook bus */
214 omap3_pmic_get_config(&touchbook_twldata,
215 TWL_COMMON_PDATA_USB | TWL_COMMON_PDATA_AUDIO,
216 TWL_COMMON_REGULATOR_VDAC | TWL_COMMON_REGULATOR_VPLL2);
217
218 touchbook_twldata.vdac->num_consumer_supplies =
219 ARRAY_SIZE(touchbook_vdac_supply);
220 touchbook_twldata.vdac->consumer_supplies = touchbook_vdac_supply;
221
222 touchbook_twldata.vpll2->constraints.name = "VDVI";
223 touchbook_twldata.vpll2->num_consumer_supplies =
224 ARRAY_SIZE(touchbook_vdvi_supply);
225 touchbook_twldata.vpll2->consumer_supplies = touchbook_vdvi_supply;
226
227 omap3_pmic_init("twl4030", &touchbook_twldata);
228 /* Additional TouchBook bus */
229 omap_register_i2c_bus(3, 100, touchBook_i2c_boardinfo,
230 ARRAY_SIZE(touchBook_i2c_boardinfo));
231
232 return 0;
233 }
234
235 static struct ads7846_platform_data ads7846_pdata = {
236 .x_min = 100,
237 .y_min = 265,
238 .x_max = 3950,
239 .y_max = 3750,
240 .x_plate_ohms = 40,
241 .pressure_max = 255,
242 .debounce_max = 10,
243 .debounce_tol = 5,
244 .debounce_rep = 1,
245 .gpio_pendown = OMAP3_TS_GPIO,
246 .keep_vref_on = 1,
247 };
248
249 static struct gpio_led gpio_leds[] = {
250 {
251 .name = "touchbook::usr0",
252 .default_trigger = "heartbeat",
253 .gpio = 150,
254 },
255 {
256 .name = "touchbook::usr1",
257 .default_trigger = "mmc0",
258 .gpio = 149,
259 },
260 {
261 .name = "touchbook::pmu_stat",
262 .gpio = -EINVAL, /* gets replaced */
263 .active_low = true,
264 },
265 };
266
267 static struct gpio_led_platform_data gpio_led_info = {
268 .leds = gpio_leds,
269 .num_leds = ARRAY_SIZE(gpio_leds),
270 };
271
272 static struct platform_device leds_gpio = {
273 .name = "leds-gpio",
274 .id = -1,
275 .dev = {
276 .platform_data = &gpio_led_info,
277 },
278 };
279
280 static struct gpio_keys_button gpio_buttons[] = {
281 {
282 .code = BTN_EXTRA,
283 .gpio = 7,
284 .desc = "user",
285 .wakeup = 1,
286 },
287 {
288 .code = KEY_POWER,
289 .gpio = 183,
290 .desc = "power",
291 .wakeup = 1,
292 },
293 };
294
295 static struct gpio_keys_platform_data gpio_key_info = {
296 .buttons = gpio_buttons,
297 .nbuttons = ARRAY_SIZE(gpio_buttons),
298 };
299
300 static struct platform_device keys_gpio = {
301 .name = "gpio-keys",
302 .id = -1,
303 .dev = {
304 .platform_data = &gpio_key_info,
305 },
306 };
307
308 #ifdef CONFIG_OMAP_MUX
309 static struct omap_board_mux board_mux[] __initdata = {
310 { .reg_offset = OMAP_MUX_TERMINATOR },
311 };
312 #endif
313
314 static struct platform_device *omap3_touchbook_devices[] __initdata = {
315 &leds_gpio,
316 &keys_gpio,
317 };
318
319 static const struct usbhs_omap_board_data usbhs_bdata __initconst = {
320
321 .port_mode[0] = OMAP_EHCI_PORT_MODE_PHY,
322 .port_mode[1] = OMAP_EHCI_PORT_MODE_PHY,
323 .port_mode[2] = OMAP_USBHS_PORT_MODE_UNUSED,
324
325 .phy_reset = true,
326 .reset_gpio_port[0] = -EINVAL,
327 .reset_gpio_port[1] = 147,
328 .reset_gpio_port[2] = -EINVAL
329 };
330
omap3_touchbook_poweroff(void)331 static void omap3_touchbook_poweroff(void)
332 {
333 int pwr_off = TB_KILL_POWER_GPIO;
334
335 if (gpio_request_one(pwr_off, GPIOF_OUT_INIT_LOW, "DVI reset") < 0)
336 printk(KERN_ERR "Unable to get kill power GPIO\n");
337 }
338
early_touchbook_revision(char * p)339 static int __init early_touchbook_revision(char *p)
340 {
341 if (!p)
342 return 0;
343
344 return strict_strtoul(p, 10, &touchbook_revision);
345 }
346 early_param("tbr", early_touchbook_revision);
347
omap3_touchbook_init(void)348 static void __init omap3_touchbook_init(void)
349 {
350 omap3_mux_init(board_mux, OMAP_PACKAGE_CBB);
351
352 pm_power_off = omap3_touchbook_poweroff;
353
354 omap3_touchbook_i2c_init();
355 platform_add_devices(omap3_touchbook_devices,
356 ARRAY_SIZE(omap3_touchbook_devices));
357 omap_serial_init();
358 omap_sdrc_init(mt46h32m32lf6_sdrc_params,
359 mt46h32m32lf6_sdrc_params);
360
361 omap_mux_init_gpio(170, OMAP_PIN_INPUT);
362 /* REVISIT leave DVI powered down until it's needed ... */
363 gpio_request_one(176, GPIOF_OUT_INIT_HIGH, "DVI_nPD");
364
365 /* Touchscreen and accelerometer */
366 omap_ads7846_init(4, OMAP3_TS_GPIO, 310, &ads7846_pdata);
367 usb_musb_init(NULL);
368 usbhs_init(&usbhs_bdata);
369 omap_nand_flash_init(NAND_BUSWIDTH_16, omap3touchbook_nand_partitions,
370 ARRAY_SIZE(omap3touchbook_nand_partitions));
371
372 /* Ensure SDRC pins are mux'd for self-refresh */
373 omap_mux_init_signal("sdrc_cke0", OMAP_PIN_OUTPUT);
374 omap_mux_init_signal("sdrc_cke1", OMAP_PIN_OUTPUT);
375 }
376
377 MACHINE_START(TOUCHBOOK, "OMAP3 touchbook Board")
378 /* Maintainer: Gregoire Gentil - http://www.alwaysinnovating.com */
379 .atag_offset = 0x100,
380 .reserve = omap_reserve,
381 .map_io = omap3_map_io,
382 .init_early = omap3430_init_early,
383 .init_irq = omap3_init_irq,
384 .handle_irq = omap3_intc_handle_irq,
385 .init_machine = omap3_touchbook_init,
386 .timer = &omap3_secure_timer,
387 .restart = omap_prcm_restart,
388 MACHINE_END
389