regulator, mc13xxx: Remove pointless test for unsigned less than zero
[zen-stable.git] / arch / arm / mach-pxa / z2.c
bloba323e076129e933eae1164ce7bde102d98189deb
1 /*
2 * linux/arch/arm/mach-pxa/z2.c
4 * Support for the Zipit Z2 Handheld device.
6 * Copyright (C) 2009-2010 Marek Vasut <marek.vasut@gmail.com>
8 * Based on research and code by: Ken McGuire
9 * Based on mainstone.c as modified for the Zipit Z2.
11 * This program is free software; you can redistribute it and/or modify
12 * it under the terms of the GNU General Public License version 2 as
13 * published by the Free Software Foundation.
16 #include <linux/platform_device.h>
17 #include <linux/mtd/mtd.h>
18 #include <linux/mtd/partitions.h>
19 #include <linux/pwm_backlight.h>
20 #include <linux/z2_battery.h>
21 #include <linux/dma-mapping.h>
22 #include <linux/spi/spi.h>
23 #include <linux/spi/pxa2xx_spi.h>
24 #include <linux/spi/libertas_spi.h>
25 #include <linux/spi/lms283gf05.h>
26 #include <linux/power_supply.h>
27 #include <linux/mtd/physmap.h>
28 #include <linux/gpio.h>
29 #include <linux/gpio_keys.h>
30 #include <linux/delay.h>
31 #include <linux/regulator/machine.h>
33 #include <asm/mach-types.h>
34 #include <asm/mach/arch.h>
36 #include <mach/pxa27x.h>
37 #include <mach/mfp-pxa27x.h>
38 #include <mach/z2.h>
39 #include <mach/pxafb.h>
40 #include <mach/mmc.h>
41 #include <plat/pxa27x_keypad.h>
43 #include <plat/i2c.h>
45 #include "generic.h"
46 #include "devices.h"
48 /******************************************************************************
49 * Pin configuration
50 ******************************************************************************/
51 static unsigned long z2_pin_config[] = {
53 /* LCD - 16bpp Active TFT */
54 GPIO58_LCD_LDD_0,
55 GPIO59_LCD_LDD_1,
56 GPIO60_LCD_LDD_2,
57 GPIO61_LCD_LDD_3,
58 GPIO62_LCD_LDD_4,
59 GPIO63_LCD_LDD_5,
60 GPIO64_LCD_LDD_6,
61 GPIO65_LCD_LDD_7,
62 GPIO66_LCD_LDD_8,
63 GPIO67_LCD_LDD_9,
64 GPIO68_LCD_LDD_10,
65 GPIO69_LCD_LDD_11,
66 GPIO70_LCD_LDD_12,
67 GPIO71_LCD_LDD_13,
68 GPIO72_LCD_LDD_14,
69 GPIO73_LCD_LDD_15,
70 GPIO74_LCD_FCLK,
71 GPIO75_LCD_LCLK,
72 GPIO76_LCD_PCLK,
73 GPIO77_LCD_BIAS,
74 GPIO19_GPIO, /* LCD reset */
75 GPIO88_GPIO, /* LCD chipselect */
77 /* PWM */
78 GPIO115_PWM1_OUT, /* Keypad Backlight */
79 GPIO11_PWM2_OUT, /* LCD Backlight */
81 /* MMC */
82 GPIO32_MMC_CLK,
83 GPIO112_MMC_CMD,
84 GPIO92_MMC_DAT_0,
85 GPIO109_MMC_DAT_1,
86 GPIO110_MMC_DAT_2,
87 GPIO111_MMC_DAT_3,
88 GPIO96_GPIO, /* SD detect */
90 /* STUART */
91 GPIO46_STUART_RXD,
92 GPIO47_STUART_TXD,
94 /* Keypad */
95 GPIO100_KP_MKIN_0 | WAKEUP_ON_LEVEL_HIGH,
96 GPIO101_KP_MKIN_1 | WAKEUP_ON_LEVEL_HIGH,
97 GPIO102_KP_MKIN_2 | WAKEUP_ON_LEVEL_HIGH,
98 GPIO34_KP_MKIN_3 | WAKEUP_ON_LEVEL_HIGH,
99 GPIO38_KP_MKIN_4 | WAKEUP_ON_LEVEL_HIGH,
100 GPIO16_KP_MKIN_5 | WAKEUP_ON_LEVEL_HIGH,
101 GPIO17_KP_MKIN_6 | WAKEUP_ON_LEVEL_HIGH,
102 GPIO103_KP_MKOUT_0,
103 GPIO104_KP_MKOUT_1,
104 GPIO105_KP_MKOUT_2,
105 GPIO106_KP_MKOUT_3,
106 GPIO107_KP_MKOUT_4,
107 GPIO108_KP_MKOUT_5,
108 GPIO35_KP_MKOUT_6,
109 GPIO41_KP_MKOUT_7,
111 /* I2C */
112 GPIO117_I2C_SCL,
113 GPIO118_I2C_SDA,
115 /* SSP1 */
116 GPIO23_SSP1_SCLK, /* SSP1_SCK */
117 GPIO25_SSP1_TXD, /* SSP1_TXD */
118 GPIO26_SSP1_RXD, /* SSP1_RXD */
120 /* SSP2 */
121 GPIO22_SSP2_SCLK, /* SSP2_SCK */
122 GPIO13_SSP2_TXD, /* SSP2_TXD */
123 GPIO40_SSP2_RXD, /* SSP2_RXD */
125 /* LEDs */
126 GPIO10_GPIO, /* WiFi LED */
127 GPIO83_GPIO, /* Charging LED */
128 GPIO85_GPIO, /* Charged LED */
130 /* I2S */
131 GPIO28_I2S_BITCLK_OUT,
132 GPIO29_I2S_SDATA_IN,
133 GPIO30_I2S_SDATA_OUT,
134 GPIO31_I2S_SYNC,
135 GPIO113_I2S_SYSCLK,
137 /* MISC */
138 GPIO0_GPIO, /* AC power detect */
139 GPIO1_GPIO, /* Power button */
140 GPIO37_GPIO, /* Headphone detect */
141 GPIO98_GPIO, /* Lid switch */
142 GPIO14_GPIO, /* WiFi Reset */
143 GPIO15_GPIO, /* WiFi Power */
144 GPIO24_GPIO, /* WiFi CS */
145 GPIO36_GPIO, /* WiFi IRQ */
146 GPIO88_GPIO, /* LCD CS */
149 /******************************************************************************
150 * NOR Flash
151 ******************************************************************************/
152 #if defined(CONFIG_MTD_PHYSMAP) || defined(CONFIG_MTD_PHYSMAP_MODULE)
153 static struct resource z2_flash_resource = {
154 .start = PXA_CS0_PHYS,
155 .end = PXA_CS0_PHYS + SZ_8M - 1,
156 .flags = IORESOURCE_MEM,
159 static struct mtd_partition z2_flash_parts[] = {
161 .name = "U-Boot Bootloader",
162 .offset = 0x0,
163 .size = 0x40000,
164 }, {
165 .name = "U-Boot Environment",
166 .offset = 0x40000,
167 .size = 0x20000,
168 }, {
169 .name = "Flash",
170 .offset = 0x60000,
171 .size = MTDPART_SIZ_FULL,
175 static struct physmap_flash_data z2_flash_data = {
176 .width = 2,
177 .parts = z2_flash_parts,
178 .nr_parts = ARRAY_SIZE(z2_flash_parts),
181 static struct platform_device z2_flash = {
182 .name = "physmap-flash",
183 .id = -1,
184 .resource = &z2_flash_resource,
185 .num_resources = 1,
186 .dev = {
187 .platform_data = &z2_flash_data,
191 static void __init z2_nor_init(void)
193 platform_device_register(&z2_flash);
195 #else
196 static inline void z2_nor_init(void) {}
197 #endif
199 /******************************************************************************
200 * Backlight
201 ******************************************************************************/
202 #if defined(CONFIG_BACKLIGHT_PWM) || defined(CONFIG_BACKLIGHT_PWM_MODULE)
203 static struct platform_pwm_backlight_data z2_backlight_data[] = {
204 [0] = {
205 /* Keypad Backlight */
206 .pwm_id = 1,
207 .max_brightness = 1023,
208 .dft_brightness = 512,
209 .pwm_period_ns = 1260320,
211 [1] = {
212 /* LCD Backlight */
213 .pwm_id = 2,
214 .max_brightness = 1023,
215 .dft_brightness = 512,
216 .pwm_period_ns = 1260320,
220 static struct platform_device z2_backlight_devices[2] = {
222 .name = "pwm-backlight",
223 .id = 0,
224 .dev = {
225 .platform_data = &z2_backlight_data[1],
229 .name = "pwm-backlight",
230 .id = 1,
231 .dev = {
232 .platform_data = &z2_backlight_data[0],
236 static void __init z2_pwm_init(void)
238 platform_device_register(&z2_backlight_devices[0]);
239 platform_device_register(&z2_backlight_devices[1]);
241 #else
242 static inline void z2_pwm_init(void) {}
243 #endif
245 /******************************************************************************
246 * Framebuffer
247 ******************************************************************************/
248 #if defined(CONFIG_FB_PXA) || defined(CONFIG_FB_PXA_MODULE)
249 static struct pxafb_mode_info z2_lcd_modes[] = {
251 .pixclock = 192000,
252 .xres = 240,
253 .yres = 320,
254 .bpp = 16,
256 .left_margin = 4,
257 .right_margin = 8,
258 .upper_margin = 4,
259 .lower_margin = 8,
261 .hsync_len = 4,
262 .vsync_len = 4,
266 static struct pxafb_mach_info z2_lcd_screen = {
267 .modes = z2_lcd_modes,
268 .num_modes = ARRAY_SIZE(z2_lcd_modes),
269 .lcd_conn = LCD_COLOR_TFT_16BPP | LCD_BIAS_ACTIVE_LOW |
270 LCD_ALTERNATE_MAPPING,
273 static void __init z2_lcd_init(void)
275 set_pxa_fb_info(&z2_lcd_screen);
277 #else
278 static inline void z2_lcd_init(void) {}
279 #endif
281 /******************************************************************************
282 * SD/MMC card controller
283 ******************************************************************************/
284 #if defined(CONFIG_MMC_PXA) || defined(CONFIG_MMC_PXA_MODULE)
285 static struct pxamci_platform_data z2_mci_platform_data = {
286 .ocr_mask = MMC_VDD_32_33 | MMC_VDD_33_34,
287 .gpio_card_detect = GPIO96_ZIPITZ2_SD_DETECT,
288 .gpio_power = -1,
289 .gpio_card_ro = -1,
290 .detect_delay_ms = 200,
293 static void __init z2_mmc_init(void)
295 pxa_set_mci_info(&z2_mci_platform_data);
297 #else
298 static inline void z2_mmc_init(void) {}
299 #endif
301 /******************************************************************************
302 * LEDs
303 ******************************************************************************/
304 #if defined(CONFIG_LEDS_GPIO) || defined(CONFIG_LEDS_GPIO_MODULE)
305 struct gpio_led z2_gpio_leds[] = {
307 .name = "z2:green:wifi",
308 .default_trigger = "none",
309 .gpio = GPIO10_ZIPITZ2_LED_WIFI,
310 .active_low = 1,
311 }, {
312 .name = "z2:green:charged",
313 .default_trigger = "none",
314 .gpio = GPIO85_ZIPITZ2_LED_CHARGED,
315 .active_low = 1,
316 }, {
317 .name = "z2:amber:charging",
318 .default_trigger = "none",
319 .gpio = GPIO83_ZIPITZ2_LED_CHARGING,
320 .active_low = 1,
324 static struct gpio_led_platform_data z2_gpio_led_info = {
325 .leds = z2_gpio_leds,
326 .num_leds = ARRAY_SIZE(z2_gpio_leds),
329 static struct platform_device z2_leds = {
330 .name = "leds-gpio",
331 .id = -1,
332 .dev = {
333 .platform_data = &z2_gpio_led_info,
337 static void __init z2_leds_init(void)
339 platform_device_register(&z2_leds);
341 #else
342 static inline void z2_leds_init(void) {}
343 #endif
345 /******************************************************************************
346 * GPIO keyboard
347 ******************************************************************************/
348 #if defined(CONFIG_KEYBOARD_PXA27x) || defined(CONFIG_KEYBOARD_PXA27x_MODULE)
349 static unsigned int z2_matrix_keys[] = {
350 KEY(0, 0, KEY_OPTION),
351 KEY(1, 0, KEY_UP),
352 KEY(2, 0, KEY_DOWN),
353 KEY(3, 0, KEY_LEFT),
354 KEY(4, 0, KEY_RIGHT),
355 KEY(5, 0, KEY_END),
356 KEY(6, 0, KEY_KPPLUS),
358 KEY(0, 1, KEY_HOME),
359 KEY(1, 1, KEY_Q),
360 KEY(2, 1, KEY_I),
361 KEY(3, 1, KEY_G),
362 KEY(4, 1, KEY_X),
363 KEY(5, 1, KEY_ENTER),
364 KEY(6, 1, KEY_KPMINUS),
366 KEY(0, 2, KEY_PAGEUP),
367 KEY(1, 2, KEY_W),
368 KEY(2, 2, KEY_O),
369 KEY(3, 2, KEY_H),
370 KEY(4, 2, KEY_C),
371 KEY(5, 2, KEY_LEFTALT),
373 KEY(0, 3, KEY_PAGEDOWN),
374 KEY(1, 3, KEY_E),
375 KEY(2, 3, KEY_P),
376 KEY(3, 3, KEY_J),
377 KEY(4, 3, KEY_V),
378 KEY(5, 3, KEY_LEFTSHIFT),
380 KEY(0, 4, KEY_ESC),
381 KEY(1, 4, KEY_R),
382 KEY(2, 4, KEY_A),
383 KEY(3, 4, KEY_K),
384 KEY(4, 4, KEY_B),
385 KEY(5, 4, KEY_LEFTCTRL),
387 KEY(0, 5, KEY_TAB),
388 KEY(1, 5, KEY_T),
389 KEY(2, 5, KEY_S),
390 KEY(3, 5, KEY_L),
391 KEY(4, 5, KEY_N),
392 KEY(5, 5, KEY_SPACE),
394 KEY(0, 6, KEY_STOPCD),
395 KEY(1, 6, KEY_Y),
396 KEY(2, 6, KEY_D),
397 KEY(3, 6, KEY_BACKSPACE),
398 KEY(4, 6, KEY_M),
399 KEY(5, 6, KEY_COMMA),
401 KEY(0, 7, KEY_PLAYCD),
402 KEY(1, 7, KEY_U),
403 KEY(2, 7, KEY_F),
404 KEY(3, 7, KEY_Z),
405 KEY(4, 7, KEY_SEMICOLON),
406 KEY(5, 7, KEY_DOT),
409 static struct pxa27x_keypad_platform_data z2_keypad_platform_data = {
410 .matrix_key_rows = 7,
411 .matrix_key_cols = 8,
412 .matrix_key_map = z2_matrix_keys,
413 .matrix_key_map_size = ARRAY_SIZE(z2_matrix_keys),
415 .debounce_interval = 30,
418 static void __init z2_mkp_init(void)
420 pxa_set_keypad_info(&z2_keypad_platform_data);
422 #else
423 static inline void z2_mkp_init(void) {}
424 #endif
426 /******************************************************************************
427 * GPIO keys
428 ******************************************************************************/
429 #if defined(CONFIG_KEYBOARD_GPIO) || defined(CONFIG_KEYBOARD_GPIO_MODULE)
430 static struct gpio_keys_button z2_pxa_buttons[] = {
431 {KEY_POWER, GPIO1_ZIPITZ2_POWER_BUTTON, 0, "Power Button" },
432 {KEY_CLOSE, GPIO98_ZIPITZ2_LID_BUTTON, 0, "Lid Button" },
435 static struct gpio_keys_platform_data z2_pxa_keys_data = {
436 .buttons = z2_pxa_buttons,
437 .nbuttons = ARRAY_SIZE(z2_pxa_buttons),
440 static struct platform_device z2_pxa_keys = {
441 .name = "gpio-keys",
442 .id = -1,
443 .dev = {
444 .platform_data = &z2_pxa_keys_data,
448 static void __init z2_keys_init(void)
450 platform_device_register(&z2_pxa_keys);
452 #else
453 static inline void z2_keys_init(void) {}
454 #endif
456 /******************************************************************************
457 * Battery
458 ******************************************************************************/
459 #if defined(CONFIG_I2C_PXA) || defined(CONFIG_I2C_PXA_MODULE)
460 static struct z2_battery_info batt_chip_info = {
461 .batt_I2C_bus = 0,
462 .batt_I2C_addr = 0x55,
463 .batt_I2C_reg = 2,
464 .charge_gpio = GPIO0_ZIPITZ2_AC_DETECT,
465 .min_voltage = 2400000,
466 .max_voltage = 3700000,
467 .batt_div = 69,
468 .batt_mult = 1000000,
469 .batt_tech = POWER_SUPPLY_TECHNOLOGY_LION,
470 .batt_name = "Z2",
473 static struct i2c_board_info __initdata z2_i2c_board_info[] = {
475 I2C_BOARD_INFO("aer915", 0x55),
476 .platform_data = &batt_chip_info,
477 }, {
478 I2C_BOARD_INFO("wm8750", 0x1b),
483 static void __init z2_i2c_init(void)
485 pxa_set_i2c_info(NULL);
486 i2c_register_board_info(0, ARRAY_AND_SIZE(z2_i2c_board_info));
488 #else
489 static inline void z2_i2c_init(void) {}
490 #endif
492 /******************************************************************************
493 * SSP Devices - WiFi and LCD control
494 ******************************************************************************/
495 #if defined(CONFIG_SPI_PXA2XX) || defined(CONFIG_SPI_PXA2XX_MODULE)
496 /* WiFi */
497 static int z2_lbs_spi_setup(struct spi_device *spi)
499 int ret = 0;
501 ret = gpio_request(GPIO15_ZIPITZ2_WIFI_POWER, "WiFi Power");
502 if (ret)
503 goto err;
505 ret = gpio_direction_output(GPIO15_ZIPITZ2_WIFI_POWER, 1);
506 if (ret)
507 goto err2;
509 ret = gpio_request(GPIO14_ZIPITZ2_WIFI_RESET, "WiFi Reset");
510 if (ret)
511 goto err2;
513 ret = gpio_direction_output(GPIO14_ZIPITZ2_WIFI_RESET, 0);
514 if (ret)
515 goto err3;
517 /* Reset the card */
518 mdelay(180);
519 gpio_set_value(GPIO14_ZIPITZ2_WIFI_RESET, 1);
520 mdelay(20);
522 spi->bits_per_word = 16;
523 spi->mode = SPI_MODE_2,
525 spi_setup(spi);
527 return 0;
529 err3:
530 gpio_free(GPIO14_ZIPITZ2_WIFI_RESET);
531 err2:
532 gpio_free(GPIO15_ZIPITZ2_WIFI_POWER);
533 err:
534 return ret;
537 static int z2_lbs_spi_teardown(struct spi_device *spi)
539 gpio_set_value(GPIO14_ZIPITZ2_WIFI_RESET, 0);
540 gpio_set_value(GPIO15_ZIPITZ2_WIFI_POWER, 0);
541 gpio_free(GPIO14_ZIPITZ2_WIFI_RESET);
542 gpio_free(GPIO15_ZIPITZ2_WIFI_POWER);
543 return 0;
547 static struct pxa2xx_spi_chip z2_lbs_chip_info = {
548 .rx_threshold = 8,
549 .tx_threshold = 8,
550 .timeout = 1000,
551 .gpio_cs = GPIO24_ZIPITZ2_WIFI_CS,
554 static struct libertas_spi_platform_data z2_lbs_pdata = {
555 .use_dummy_writes = 1,
556 .setup = z2_lbs_spi_setup,
557 .teardown = z2_lbs_spi_teardown,
560 /* LCD */
561 static struct pxa2xx_spi_chip lms283_chip_info = {
562 .rx_threshold = 1,
563 .tx_threshold = 1,
564 .timeout = 64,
565 .gpio_cs = GPIO88_ZIPITZ2_LCD_CS,
568 static const struct lms283gf05_pdata lms283_pdata = {
569 .reset_gpio = GPIO19_ZIPITZ2_LCD_RESET,
572 static struct spi_board_info spi_board_info[] __initdata = {
574 .modalias = "libertas_spi",
575 .platform_data = &z2_lbs_pdata,
576 .controller_data = &z2_lbs_chip_info,
577 .irq = gpio_to_irq(GPIO36_ZIPITZ2_WIFI_IRQ),
578 .max_speed_hz = 13000000,
579 .bus_num = 1,
580 .chip_select = 0,
583 .modalias = "lms283gf05",
584 .controller_data = &lms283_chip_info,
585 .platform_data = &lms283_pdata,
586 .max_speed_hz = 400000,
587 .bus_num = 2,
588 .chip_select = 0,
592 static struct pxa2xx_spi_master pxa_ssp1_master_info = {
593 .clock_enable = CKEN_SSP,
594 .num_chipselect = 1,
595 .enable_dma = 1,
598 static struct pxa2xx_spi_master pxa_ssp2_master_info = {
599 .clock_enable = CKEN_SSP2,
600 .num_chipselect = 1,
603 static void __init z2_spi_init(void)
605 pxa2xx_set_spi_info(1, &pxa_ssp1_master_info);
606 pxa2xx_set_spi_info(2, &pxa_ssp2_master_info);
607 spi_register_board_info(spi_board_info, ARRAY_SIZE(spi_board_info));
609 #else
610 static inline void z2_spi_init(void) {}
611 #endif
613 /******************************************************************************
614 * Core power regulator
615 ******************************************************************************/
616 #if defined(CONFIG_REGULATOR_TPS65023) || \
617 defined(CONFIG_REGULATOR_TPS65023_MODULE)
618 static struct regulator_consumer_supply z2_tps65021_consumers[] = {
620 .supply = "vcc_core",
624 static struct regulator_init_data z2_tps65021_info[] = {
626 .constraints = {
627 .name = "vcc_core range",
628 .min_uV = 800000,
629 .max_uV = 1600000,
630 .always_on = 1,
631 .valid_ops_mask = REGULATOR_CHANGE_VOLTAGE,
633 .consumer_supplies = z2_tps65021_consumers,
634 .num_consumer_supplies = ARRAY_SIZE(z2_tps65021_consumers),
635 }, {
636 .constraints = {
637 .name = "DCDC2",
638 .min_uV = 3300000,
639 .max_uV = 3300000,
640 .always_on = 1,
642 }, {
643 .constraints = {
644 .name = "DCDC3",
645 .min_uV = 1800000,
646 .max_uV = 1800000,
647 .always_on = 1,
649 }, {
650 .constraints = {
651 .name = "LDO1",
652 .min_uV = 1000000,
653 .max_uV = 3150000,
654 .always_on = 1,
656 }, {
657 .constraints = {
658 .name = "LDO2",
659 .min_uV = 1050000,
660 .max_uV = 3300000,
661 .always_on = 1,
666 static struct i2c_board_info __initdata z2_pi2c_board_info[] = {
668 I2C_BOARD_INFO("tps65021", 0x48),
669 .platform_data = &z2_tps65021_info,
673 static void __init z2_pmic_init(void)
675 pxa27x_set_i2c_power_info(NULL);
676 i2c_register_board_info(1, ARRAY_AND_SIZE(z2_pi2c_board_info));
678 #else
679 static inline void z2_pmic_init(void) {}
680 #endif
682 /******************************************************************************
683 * Machine init
684 ******************************************************************************/
685 static void __init z2_init(void)
687 pxa2xx_mfp_config(ARRAY_AND_SIZE(z2_pin_config));
689 pxa_set_ffuart_info(NULL);
690 pxa_set_btuart_info(NULL);
691 pxa_set_stuart_info(NULL);
693 z2_lcd_init();
694 z2_mmc_init();
695 z2_mkp_init();
696 z2_i2c_init();
697 z2_spi_init();
698 z2_nor_init();
699 z2_pwm_init();
700 z2_leds_init();
701 z2_keys_init();
702 z2_pmic_init();
705 MACHINE_START(ZIPIT2, "Zipit Z2")
706 .boot_params = 0xa0000100,
707 .map_io = pxa27x_map_io,
708 .init_irq = pxa27x_init_irq,
709 .timer = &pxa_timer,
710 .init_machine = z2_init,
711 MACHINE_END