mach-smartq.c 9.1 KB

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  1. /*
  2. * linux/arch/arm/mach-s3c64xx/mach-smartq.c
  3. *
  4. * Copyright (C) 2010 Maurus Cuelenaere
  5. *
  6. * This program is free software; you can redistribute it and/or modify
  7. * it under the terms of the GNU General Public License version 2 as
  8. * published by the Free Software Foundation.
  9. *
  10. */
  11. #include <linux/delay.h>
  12. #include <linux/fb.h>
  13. #include <linux/gpio.h>
  14. #include <linux/init.h>
  15. #include <linux/platform_device.h>
  16. #include <linux/pwm_backlight.h>
  17. #include <linux/serial_core.h>
  18. #include <linux/spi/spi_gpio.h>
  19. #include <linux/usb/gpio_vbus.h>
  20. #include <linux/platform_data/s3c-hsotg.h>
  21. #include <asm/mach-types.h>
  22. #include <asm/mach/map.h>
  23. #include <mach/map.h>
  24. #include <mach/regs-gpio.h>
  25. #include <plat/clock.h>
  26. #include <plat/cpu.h>
  27. #include <plat/devs.h>
  28. #include <linux/platform_data/i2c-s3c2410.h>
  29. #include <plat/gpio-cfg.h>
  30. #include <linux/platform_data/hwmon-s3c.h>
  31. #include <plat/regs-serial.h>
  32. #include <linux/platform_data/usb-ohci-s3c2410.h>
  33. #include <plat/sdhci.h>
  34. #include <linux/platform_data/touchscreen-s3c2410.h>
  35. #include <video/platform_lcd.h>
  36. #include <plat/samsung-time.h>
  37. #include "common.h"
  38. #include "regs-modem.h"
  39. #define UCON S3C2410_UCON_DEFAULT
  40. #define ULCON (S3C2410_LCON_CS8 | S3C2410_LCON_PNONE)
  41. #define UFCON (S3C2410_UFCON_RXTRIG8 | S3C2410_UFCON_FIFOMODE)
  42. static struct s3c2410_uartcfg smartq_uartcfgs[] __initdata = {
  43. [0] = {
  44. .hwport = 0,
  45. .flags = 0,
  46. .ucon = UCON,
  47. .ulcon = ULCON,
  48. .ufcon = UFCON,
  49. },
  50. [1] = {
  51. .hwport = 1,
  52. .flags = 0,
  53. .ucon = UCON,
  54. .ulcon = ULCON,
  55. .ufcon = UFCON,
  56. },
  57. [2] = {
  58. .hwport = 2,
  59. .flags = 0,
  60. .ucon = UCON,
  61. .ulcon = ULCON,
  62. .ufcon = UFCON,
  63. },
  64. };
  65. static void smartq_usb_host_powercontrol(int port, int to)
  66. {
  67. pr_debug("%s(%d, %d)\n", __func__, port, to);
  68. if (port == 0) {
  69. gpio_set_value(S3C64XX_GPL(0), to);
  70. gpio_set_value(S3C64XX_GPL(1), to);
  71. }
  72. }
  73. static irqreturn_t smartq_usb_host_ocirq(int irq, void *pw)
  74. {
  75. struct s3c2410_hcd_info *info = pw;
  76. if (gpio_get_value(S3C64XX_GPL(10)) == 0) {
  77. pr_debug("%s: over-current irq (oc detected)\n", __func__);
  78. s3c2410_usb_report_oc(info, 3);
  79. } else {
  80. pr_debug("%s: over-current irq (oc cleared)\n", __func__);
  81. s3c2410_usb_report_oc(info, 0);
  82. }
  83. return IRQ_HANDLED;
  84. }
  85. static void smartq_usb_host_enableoc(struct s3c2410_hcd_info *info, int on)
  86. {
  87. int ret;
  88. /* This isn't present on a SmartQ 5 board */
  89. if (machine_is_smartq5())
  90. return;
  91. if (on) {
  92. ret = request_irq(gpio_to_irq(S3C64XX_GPL(10)),
  93. smartq_usb_host_ocirq, IRQF_DISABLED |
  94. IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING,
  95. "USB host overcurrent", info);
  96. if (ret != 0)
  97. pr_err("failed to request usb oc irq: %d\n", ret);
  98. } else {
  99. free_irq(gpio_to_irq(S3C64XX_GPL(10)), info);
  100. }
  101. }
  102. static struct s3c2410_hcd_info smartq_usb_host_info = {
  103. .port[0] = {
  104. .flags = S3C_HCDFLG_USED
  105. },
  106. .port[1] = {
  107. .flags = 0
  108. },
  109. .power_control = smartq_usb_host_powercontrol,
  110. .enable_oc = smartq_usb_host_enableoc,
  111. };
  112. static struct gpio_vbus_mach_info smartq_usb_otg_vbus_pdata = {
  113. .gpio_vbus = S3C64XX_GPL(9),
  114. .gpio_pullup = -1,
  115. .gpio_vbus_inverted = true,
  116. };
  117. static struct platform_device smartq_usb_otg_vbus_dev = {
  118. .name = "gpio-vbus",
  119. .dev.platform_data = &smartq_usb_otg_vbus_pdata,
  120. };
  121. static int smartq_bl_init(struct device *dev)
  122. {
  123. s3c_gpio_cfgpin(S3C64XX_GPF(15), S3C_GPIO_SFN(2));
  124. return 0;
  125. }
  126. static struct platform_pwm_backlight_data smartq_backlight_data = {
  127. .pwm_id = 1,
  128. .max_brightness = 1000,
  129. .dft_brightness = 600,
  130. .pwm_period_ns = 1000000000 / (1000 * 20),
  131. .init = smartq_bl_init,
  132. };
  133. static struct platform_device smartq_backlight_device = {
  134. .name = "pwm-backlight",
  135. .dev = {
  136. .parent = &s3c_device_timer[1].dev,
  137. .platform_data = &smartq_backlight_data,
  138. },
  139. };
  140. static struct s3c2410_ts_mach_info smartq_touchscreen_pdata __initdata = {
  141. .delay = 65535,
  142. .presc = 99,
  143. .oversampling_shift = 4,
  144. };
  145. static struct s3c_sdhci_platdata smartq_internal_hsmmc_pdata = {
  146. .max_width = 4,
  147. .cd_type = S3C_SDHCI_CD_PERMANENT,
  148. };
  149. static struct s3c_hwmon_pdata smartq_hwmon_pdata __initdata = {
  150. /* Battery voltage (?-4.2V) */
  151. .in[0] = &(struct s3c_hwmon_chcfg) {
  152. .name = "smartq:battery-voltage",
  153. .mult = 3300,
  154. .div = 2048,
  155. },
  156. /* Reference voltage (1.2V) */
  157. .in[1] = &(struct s3c_hwmon_chcfg) {
  158. .name = "smartq:reference-voltage",
  159. .mult = 3300,
  160. .div = 4096,
  161. },
  162. };
  163. static struct s3c_hsotg_plat smartq_hsotg_pdata;
  164. static int __init smartq_lcd_setup_gpio(void)
  165. {
  166. int ret;
  167. ret = gpio_request(S3C64XX_GPM(3), "LCD power");
  168. if (ret < 0)
  169. return ret;
  170. /* turn power off */
  171. gpio_direction_output(S3C64XX_GPM(3), 0);
  172. return 0;
  173. }
  174. /* GPM0 -> CS */
  175. static struct spi_gpio_platform_data smartq_lcd_control = {
  176. .sck = S3C64XX_GPM(1),
  177. .mosi = S3C64XX_GPM(2),
  178. .miso = S3C64XX_GPM(2),
  179. };
  180. static struct platform_device smartq_lcd_control_device = {
  181. .name = "spi-gpio",
  182. .id = 1,
  183. .dev.platform_data = &smartq_lcd_control,
  184. };
  185. static void smartq_lcd_power_set(struct plat_lcd_data *pd, unsigned int power)
  186. {
  187. gpio_direction_output(S3C64XX_GPM(3), power);
  188. }
  189. static struct plat_lcd_data smartq_lcd_power_data = {
  190. .set_power = smartq_lcd_power_set,
  191. };
  192. static struct platform_device smartq_lcd_power_device = {
  193. .name = "platform-lcd",
  194. .dev.parent = &s3c_device_fb.dev,
  195. .dev.platform_data = &smartq_lcd_power_data,
  196. };
  197. static struct i2c_board_info smartq_i2c_devs[] __initdata = {
  198. { I2C_BOARD_INFO("wm8987", 0x1a), },
  199. };
  200. static struct platform_device *smartq_devices[] __initdata = {
  201. &s3c_device_hsmmc1, /* Init iNAND first, ... */
  202. &s3c_device_hsmmc0, /* ... then the external SD card */
  203. &s3c_device_hsmmc2,
  204. &s3c_device_adc,
  205. &s3c_device_fb,
  206. &s3c_device_hwmon,
  207. &s3c_device_i2c0,
  208. &s3c_device_ohci,
  209. &s3c_device_rtc,
  210. &s3c_device_timer[1],
  211. &s3c_device_ts,
  212. &s3c_device_usb_hsotg,
  213. &s3c64xx_device_iis0,
  214. &smartq_backlight_device,
  215. &smartq_lcd_control_device,
  216. &smartq_lcd_power_device,
  217. &smartq_usb_otg_vbus_dev,
  218. };
  219. static void __init smartq_lcd_mode_set(void)
  220. {
  221. u32 tmp;
  222. /* set the LCD type */
  223. tmp = __raw_readl(S3C64XX_SPCON);
  224. tmp &= ~S3C64XX_SPCON_LCD_SEL_MASK;
  225. tmp |= S3C64XX_SPCON_LCD_SEL_RGB;
  226. __raw_writel(tmp, S3C64XX_SPCON);
  227. /* remove the LCD bypass */
  228. tmp = __raw_readl(S3C64XX_MODEM_MIFPCON);
  229. tmp &= ~MIFPCON_LCD_BYPASS;
  230. __raw_writel(tmp, S3C64XX_MODEM_MIFPCON);
  231. }
  232. static void smartq_power_off(void)
  233. {
  234. gpio_direction_output(S3C64XX_GPK(15), 1);
  235. }
  236. static int __init smartq_power_off_init(void)
  237. {
  238. int ret;
  239. ret = gpio_request(S3C64XX_GPK(15), "Power control");
  240. if (ret < 0) {
  241. pr_err("%s: failed to get GPK15\n", __func__);
  242. return ret;
  243. }
  244. /* leave power on */
  245. gpio_direction_output(S3C64XX_GPK(15), 0);
  246. pm_power_off = smartq_power_off;
  247. return ret;
  248. }
  249. static int __init smartq_usb_host_init(void)
  250. {
  251. int ret;
  252. ret = gpio_request(S3C64XX_GPL(0), "USB power control");
  253. if (ret < 0) {
  254. pr_err("%s: failed to get GPL0\n", __func__);
  255. return ret;
  256. }
  257. ret = gpio_request(S3C64XX_GPL(1), "USB host power control");
  258. if (ret < 0) {
  259. pr_err("%s: failed to get GPL1\n", __func__);
  260. goto err;
  261. }
  262. if (!machine_is_smartq5()) {
  263. /* This isn't present on a SmartQ 5 board */
  264. ret = gpio_request(S3C64XX_GPL(10), "USB host overcurrent");
  265. if (ret < 0) {
  266. pr_err("%s: failed to get GPL10\n", __func__);
  267. goto err2;
  268. }
  269. }
  270. /* turn power off */
  271. gpio_direction_output(S3C64XX_GPL(0), 0);
  272. gpio_direction_output(S3C64XX_GPL(1), 0);
  273. if (!machine_is_smartq5())
  274. gpio_direction_input(S3C64XX_GPL(10));
  275. s3c_device_ohci.dev.platform_data = &smartq_usb_host_info;
  276. return 0;
  277. err2:
  278. gpio_free(S3C64XX_GPL(1));
  279. err:
  280. gpio_free(S3C64XX_GPL(0));
  281. return ret;
  282. }
  283. static int __init smartq_usb_otg_init(void)
  284. {
  285. clk_xusbxti.rate = 12000000;
  286. return 0;
  287. }
  288. static int __init smartq_wifi_init(void)
  289. {
  290. int ret;
  291. ret = gpio_request(S3C64XX_GPK(1), "wifi control");
  292. if (ret < 0) {
  293. pr_err("%s: failed to get GPK1\n", __func__);
  294. return ret;
  295. }
  296. ret = gpio_request(S3C64XX_GPK(2), "wifi reset");
  297. if (ret < 0) {
  298. pr_err("%s: failed to get GPK2\n", __func__);
  299. gpio_free(S3C64XX_GPK(1));
  300. return ret;
  301. }
  302. /* turn power on */
  303. gpio_direction_output(S3C64XX_GPK(1), 1);
  304. /* reset device */
  305. gpio_direction_output(S3C64XX_GPK(2), 0);
  306. mdelay(100);
  307. gpio_set_value(S3C64XX_GPK(2), 1);
  308. gpio_direction_input(S3C64XX_GPK(2));
  309. return 0;
  310. }
  311. static struct map_desc smartq_iodesc[] __initdata = {};
  312. void __init smartq_map_io(void)
  313. {
  314. s3c64xx_init_io(smartq_iodesc, ARRAY_SIZE(smartq_iodesc));
  315. s3c24xx_init_clocks(12000000);
  316. s3c24xx_init_uarts(smartq_uartcfgs, ARRAY_SIZE(smartq_uartcfgs));
  317. samsung_set_timer_source(SAMSUNG_PWM3, SAMSUNG_PWM4);
  318. smartq_lcd_mode_set();
  319. }
  320. void __init smartq_machine_init(void)
  321. {
  322. s3c_i2c0_set_platdata(NULL);
  323. s3c_hsotg_set_platdata(&smartq_hsotg_pdata);
  324. s3c_hwmon_set_platdata(&smartq_hwmon_pdata);
  325. s3c_sdhci1_set_platdata(&smartq_internal_hsmmc_pdata);
  326. s3c_sdhci2_set_platdata(&smartq_internal_hsmmc_pdata);
  327. s3c24xx_ts_set_platdata(&smartq_touchscreen_pdata);
  328. i2c_register_board_info(0, smartq_i2c_devs,
  329. ARRAY_SIZE(smartq_i2c_devs));
  330. WARN_ON(smartq_lcd_setup_gpio());
  331. WARN_ON(smartq_power_off_init());
  332. WARN_ON(smartq_usb_host_init());
  333. WARN_ON(smartq_usb_otg_init());
  334. WARN_ON(smartq_wifi_init());
  335. platform_add_devices(smartq_devices, ARRAY_SIZE(smartq_devices));
  336. }