arch/arm/mach-s3c64xx/mach-smartq.c

   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
  12 #include <linux/delay.h>
  13 #include <linux/fb.h>
  14 #include <linux/gpio.h>
  15 #include <linux/init.h>
  16 #include <linux/platform_device.h>
  17 #include <linux/pwm_backlight.h>
  18 #include <linux/serial_core.h>
  19 #include <linux/serial_s3c.h>
  20 #include <linux/spi/spi_gpio.h>
  21 #include <linux/usb/gpio_vbus.h>
  22 #include <linux/platform_data/s3c-hsotg.h>
  23
  24 #include <asm/mach-types.h>
  25 #include <asm/mach/map.h>
  26
  27 #include <mach/map.h>
  28 #include <mach/regs-gpio.h>
  29 #include <mach/gpio-samsung.h>
  30
  31 #include <plat/clock.h>
  32 #include <plat/cpu.h>
  33 #include <plat/devs.h>
  34 #include <linux/platform_data/i2c-s3c2410.h>
  35 #include <plat/gpio-cfg.h>
  36 #include <linux/platform_data/hwmon-s3c.h>
  37 #include <linux/platform_data/usb-ohci-s3c2410.h>
  38 #include <plat/sdhci.h>
  39 #include <linux/platform_data/touchscreen-s3c2410.h>
  40
  41 #include <video/platform_lcd.h>
  42 #include <plat/samsung-time.h>
  43
  44 #include "common.h"
  45 #include "regs-modem.h"
  46
  47 #define UCON S3C2410_UCON_DEFAULT
  48 #define ULCON (S3C2410_LCON_CS8 | S3C2410_LCON_PNONE)
  49 #define UFCON (S3C2410_UFCON_RXTRIG8 | S3C2410_UFCON_FIFOMODE)
  50
  51 static struct s3c2410_uartcfg smartq_uartcfgs[] __initdata = {
  52         [0] = {
  53                 .hwport      = 0,
  54                 .flags       = 0,
  55                 .ucon        = UCON,
  56                 .ulcon       = ULCON,
  57                 .ufcon       = UFCON,
  58         },
  59         [1] = {
  60                 .hwport      = 1,
  61                 .flags       = 0,
  62                 .ucon        = UCON,
  63                 .ulcon       = ULCON,
  64                 .ufcon       = UFCON,
  65         },
  66         [2] = {
  67                 .hwport      = 2,
  68                 .flags       = 0,
  69                 .ucon        = UCON,
  70                 .ulcon       = ULCON,
  71                 .ufcon       = UFCON,
  72         },
  73 };
  74
  75 static void smartq_usb_host_powercontrol(int port, int to)
  76 {
  77         pr_debug("%s(%d, %d)\n", __func__, port, to);
  78
  79         if (port == 0) {
  80                 gpio_set_value(S3C64XX_GPL(0), to);
  81                 gpio_set_value(S3C64XX_GPL(1), to);
  82         }
  83 }
  84
  85 static irqreturn_t smartq_usb_host_ocirq(int irq, void *pw)
  86 {
  87         struct s3c2410_hcd_info *info = pw;
  88
  89         if (gpio_get_value(S3C64XX_GPL(10)) == 0) {
  90                 pr_debug("%s: over-current irq (oc detected)\n", __func__);
  91                 s3c2410_usb_report_oc(info, 3);
  92         } else {
  93                 pr_debug("%s: over-current irq (oc cleared)\n", __func__);
  94                 s3c2410_usb_report_oc(info, 0);
  95         }
  96
  97         return IRQ_HANDLED;
  98 }
  99
 100 static void smartq_usb_host_enableoc(struct s3c2410_hcd_info *info, int on)
 101 {
 102         int ret;
 103
 104         /* This isn't present on a SmartQ 5 board */
 105         if (machine_is_smartq5())
 106                 return;
 107
 108         if (on) {
 109                 ret = request_irq(gpio_to_irq(S3C64XX_GPL(10)),
 110                                   smartq_usb_host_ocirq,
 111                                   IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING,
 112                                   "USB host overcurrent", info);
 113                 if (ret != 0)
 114                         pr_err("failed to request usb oc irq: %d\n", ret);
 115         } else {
 116                 free_irq(gpio_to_irq(S3C64XX_GPL(10)), info);
 117         }
 118 }
 119
 120 static struct s3c2410_hcd_info smartq_usb_host_info = {
 121         .port[0]        = {
 122                 .flags  = S3C_HCDFLG_USED
 123         },
 124         .port[1]        = {
 125                 .flags  = 0
 126         },
 127
 128         .power_control  = smartq_usb_host_powercontrol,
 129         .enable_oc      = smartq_usb_host_enableoc,
 130 };
 131
 132 static struct gpio_vbus_mach_info smartq_usb_otg_vbus_pdata = {
 133         .gpio_vbus              = S3C64XX_GPL(9),
 134         .gpio_pullup            = -1,
 135         .gpio_vbus_inverted     = true,
 136 };
 137
 138 static struct platform_device smartq_usb_otg_vbus_dev = {
 139         .name                   = "gpio-vbus",
 140         .dev.platform_data      = &smartq_usb_otg_vbus_pdata,
 141 };
 142
 143 static int smartq_bl_init(struct device *dev)
 144 {
 145     s3c_gpio_cfgpin(S3C64XX_GPF(15), S3C_GPIO_SFN(2));
 146
 147     return 0;
 148 }
 149
 150 static struct platform_pwm_backlight_data smartq_backlight_data = {
 151         .pwm_id         = 1,
 152         .max_brightness = 1000,
 153         .dft_brightness = 600,
 154         .pwm_period_ns  = 1000000000 / (1000 * 20),
 155         .enable_gpio    = -1,
 156         .init           = smartq_bl_init,
 157 };
 158
 159 static struct platform_device smartq_backlight_device = {
 160         .name           = "pwm-backlight",
 161         .dev            = {
 162                 .parent = &samsung_device_pwm.dev,
 163                 .platform_data = &smartq_backlight_data,
 164         },
 165 };
 166
 167 static struct s3c2410_ts_mach_info smartq_touchscreen_pdata __initdata = {
 168         .delay                  = 65535,
 169         .presc                  = 99,
 170         .oversampling_shift     = 4,
 171 };
 172
 173 static struct s3c_sdhci_platdata smartq_internal_hsmmc_pdata = {
 174         .max_width              = 4,
 175         .cd_type                = S3C_SDHCI_CD_PERMANENT,
 176 };
 177
 178 static struct s3c_hwmon_pdata smartq_hwmon_pdata __initdata = {
 179         /* Battery voltage (?-4.2V) */
 180         .in[0] = &(struct s3c_hwmon_chcfg) {
 181                 .name           = "smartq:battery-voltage",
 182                 .mult           = 3300,
 183                 .div            = 2048,
 184         },
 185         /* Reference voltage (1.2V) */
 186         .in[1] = &(struct s3c_hwmon_chcfg) {
 187                 .name           = "smartq:reference-voltage",
 188                 .mult           = 3300,
 189                 .div            = 4096,
 190         },
 191 };
 192
 193 static struct s3c_hsotg_plat smartq_hsotg_pdata;
 194
 195 static int __init smartq_lcd_setup_gpio(void)
 196 {
 197         int ret;
 198
 199         ret = gpio_request(S3C64XX_GPM(3), "LCD power");
 200         if (ret < 0)
 201                 return ret;
 202
 203         /* turn power off */
 204         gpio_direction_output(S3C64XX_GPM(3), 0);
 205
 206         return 0;
 207 }
 208
 209 /* GPM0 -> CS */
 210 static struct spi_gpio_platform_data smartq_lcd_control = {
 211         .sck                    = S3C64XX_GPM(1),
 212         .mosi                   = S3C64XX_GPM(2),
 213         .miso                   = S3C64XX_GPM(2),
 214 };
 215
 216 static struct platform_device smartq_lcd_control_device = {
 217         .name                   = "spi-gpio",
 218         .id                     = 1,
 219         .dev.platform_data      = &smartq_lcd_control,
 220 };
 221
 222 static void smartq_lcd_power_set(struct plat_lcd_data *pd, unsigned int power)
 223 {
 224         gpio_direction_output(S3C64XX_GPM(3), power);
 225 }
 226
 227 static struct plat_lcd_data smartq_lcd_power_data = {
 228         .set_power      = smartq_lcd_power_set,
 229 };
 230
 231 static struct platform_device smartq_lcd_power_device = {
 232         .name                   = "platform-lcd",
 233         .dev.parent             = &s3c_device_fb.dev,
 234         .dev.platform_data      = &smartq_lcd_power_data,
 235 };
 236
 237 static struct i2c_board_info smartq_i2c_devs[] __initdata = {
 238         { I2C_BOARD_INFO("wm8987", 0x1a), },
 239 };
 240
 241 static struct platform_device *smartq_devices[] __initdata = {
 242         &s3c_device_hsmmc1,     /* Init iNAND first, ... */
 243         &s3c_device_hsmmc0,     /* ... then the external SD card */
 244         &s3c_device_hsmmc2,
 245         &s3c_device_adc,
 246         &s3c_device_fb,
 247         &s3c_device_hwmon,
 248         &s3c_device_i2c0,
 249         &s3c_device_ohci,
 250         &s3c_device_rtc,
 251         &samsung_device_pwm,
 252         &s3c_device_ts,
 253         &s3c_device_usb_hsotg,
 254         &s3c64xx_device_iis0,
 255         &smartq_backlight_device,
 256         &smartq_lcd_control_device,
 257         &smartq_lcd_power_device,
 258         &smartq_usb_otg_vbus_dev,
 259 };
 260
 261 static void __init smartq_lcd_mode_set(void)
 262 {
 263         u32 tmp;
 264
 265         /* set the LCD type */
 266         tmp = __raw_readl(S3C64XX_SPCON);
 267         tmp &= ~S3C64XX_SPCON_LCD_SEL_MASK;
 268         tmp |= S3C64XX_SPCON_LCD_SEL_RGB;
 269         __raw_writel(tmp, S3C64XX_SPCON);
 270
 271         /* remove the LCD bypass */
 272         tmp = __raw_readl(S3C64XX_MODEM_MIFPCON);
 273         tmp &= ~MIFPCON_LCD_BYPASS;
 274         __raw_writel(tmp, S3C64XX_MODEM_MIFPCON);
 275 }
 276
 277 static void smartq_power_off(void)
 278 {
 279         gpio_direction_output(S3C64XX_GPK(15), 1);
 280 }
 281
 282 static int __init smartq_power_off_init(void)
 283 {
 284         int ret;
 285
 286         ret = gpio_request(S3C64XX_GPK(15), "Power control");
 287         if (ret < 0) {
 288                 pr_err("%s: failed to get GPK15\n", __func__);
 289                 return ret;
 290         }
 291
 292         /* leave power on */
 293         gpio_direction_output(S3C64XX_GPK(15), 0);
 294
 295         pm_power_off = smartq_power_off;
 296
 297         return ret;
 298 }
 299
 300 static int __init smartq_usb_host_init(void)
 301 {
 302         int ret;
 303
 304         ret = gpio_request(S3C64XX_GPL(0), "USB power control");
 305         if (ret < 0) {
 306                 pr_err("%s: failed to get GPL0\n", __func__);
 307                 return ret;
 308         }
 309
 310         ret = gpio_request(S3C64XX_GPL(1), "USB host power control");
 311         if (ret < 0) {
 312                 pr_err("%s: failed to get GPL1\n", __func__);
 313                 goto err;
 314         }
 315
 316         if (!machine_is_smartq5()) {
 317                 /* This isn't present on a SmartQ 5 board */
 318                 ret = gpio_request(S3C64XX_GPL(10), "USB host overcurrent");
 319                 if (ret < 0) {
 320                         pr_err("%s: failed to get GPL10\n", __func__);
 321                         goto err2;
 322                 }
 323         }
 324
 325         /* turn power off */
 326         gpio_direction_output(S3C64XX_GPL(0), 0);
 327         gpio_direction_output(S3C64XX_GPL(1), 0);
 328         if (!machine_is_smartq5())
 329                 gpio_direction_input(S3C64XX_GPL(10));
 330
 331         s3c_device_ohci.dev.platform_data = &smartq_usb_host_info;
 332
 333         return 0;
 334
 335 err2:
 336         gpio_free(S3C64XX_GPL(1));
 337 err:
 338         gpio_free(S3C64XX_GPL(0));
 339         return ret;
 340 }
 341
 342 static int __init smartq_wifi_init(void)
 343 {
 344         int ret;
 345
 346         ret = gpio_request(S3C64XX_GPK(1), "wifi control");
 347         if (ret < 0) {
 348                 pr_err("%s: failed to get GPK1\n", __func__);
 349                 return ret;
 350         }
 351
 352         ret = gpio_request(S3C64XX_GPK(2), "wifi reset");
 353         if (ret < 0) {
 354                 pr_err("%s: failed to get GPK2\n", __func__);
 355                 gpio_free(S3C64XX_GPK(1));
 356                 return ret;
 357         }
 358
 359         /* turn power on */
 360         gpio_direction_output(S3C64XX_GPK(1), 1);
 361
 362         /* reset device */
 363         gpio_direction_output(S3C64XX_GPK(2), 0);
 364         mdelay(100);
 365         gpio_set_value(S3C64XX_GPK(2), 1);
 366         gpio_direction_input(S3C64XX_GPK(2));
 367
 368         return 0;
 369 }
 370
 371 static struct map_desc smartq_iodesc[] __initdata = {};
 372 void __init smartq_map_io(void)
 373 {
 374         s3c64xx_init_io(smartq_iodesc, ARRAY_SIZE(smartq_iodesc));
 375         s3c64xx_set_xtal_freq(12000000);
 376         s3c64xx_set_xusbxti_freq(12000000);
 377         s3c24xx_init_uarts(smartq_uartcfgs, ARRAY_SIZE(smartq_uartcfgs));
 378         samsung_set_timer_source(SAMSUNG_PWM3, SAMSUNG_PWM4);
 379
 380         smartq_lcd_mode_set();
 381 }
 382
 383 void __init smartq_machine_init(void)
 384 {
 385         s3c_i2c0_set_platdata(NULL);
 386         s3c_hsotg_set_platdata(&smartq_hsotg_pdata);
 387         s3c_hwmon_set_platdata(&smartq_hwmon_pdata);
 388         s3c_sdhci1_set_platdata(&smartq_internal_hsmmc_pdata);
 389         s3c_sdhci2_set_platdata(&smartq_internal_hsmmc_pdata);
 390         s3c24xx_ts_set_platdata(&smartq_touchscreen_pdata);
 391
 392         i2c_register_board_info(0, smartq_i2c_devs,
 393                                 ARRAY_SIZE(smartq_i2c_devs));
 394
 395         WARN_ON(smartq_lcd_setup_gpio());
 396         WARN_ON(smartq_power_off_init());
 397         WARN_ON(smartq_usb_host_init());
 398         WARN_ON(smartq_wifi_init());
 399
 400         platform_add_devices(smartq_devices, ARRAY_SIZE(smartq_devices));
 401 }