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.h>
  18 #include <linux/pwm_backlight.h>
  19 #include <linux/serial_core.h>
  20 #include <linux/serial_s3c.h>
  21 #include <linux/spi/spi_gpio.h>
  22 #include <linux/usb/gpio_vbus.h>
  23 #include <linux/platform_data/s3c-hsotg.h>
  24
  25 #include <asm/mach-types.h>
  26 #include <asm/mach/map.h>
  27
  28 #include <mach/map.h>
  29 #include <mach/regs-gpio.h>
  30 #include <mach/gpio-samsung.h>
  31
  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 struct pwm_lookup smartq_pwm_lookup[] = {
 144         PWM_LOOKUP("samsung-pwm", 1, "pwm-backlight.0", NULL,
 145                    1000000000 / (1000 * 20), PWM_POLARITY_NORMAL),
 146 };
 147
 148 static int smartq_bl_init(struct device *dev)
 149 {
 150     s3c_gpio_cfgpin(S3C64XX_GPF(15), S3C_GPIO_SFN(2));
 151
 152     return 0;
 153 }
 154
 155 static struct platform_pwm_backlight_data smartq_backlight_data = {
 156         .max_brightness = 1000,
 157         .dft_brightness = 600,
 158         .enable_gpio    = -1,
 159         .init           = smartq_bl_init,
 160 };
 161
 162 static struct platform_device smartq_backlight_device = {
 163         .name           = "pwm-backlight",
 164         .dev            = {
 165                 .parent = &samsung_device_pwm.dev,
 166                 .platform_data = &smartq_backlight_data,
 167         },
 168 };
 169
 170 static struct s3c2410_ts_mach_info smartq_touchscreen_pdata __initdata = {
 171         .delay                  = 65535,
 172         .presc                  = 99,
 173         .oversampling_shift     = 4,
 174 };
 175
 176 static struct s3c_sdhci_platdata smartq_internal_hsmmc_pdata = {
 177         .max_width              = 4,
 178         .cd_type                = S3C_SDHCI_CD_PERMANENT,
 179 };
 180
 181 static struct s3c_hwmon_pdata smartq_hwmon_pdata __initdata = {
 182         /* Battery voltage (?-4.2V) */
 183         .in[0] = &(struct s3c_hwmon_chcfg) {
 184                 .name           = "smartq:battery-voltage",
 185                 .mult           = 3300,
 186                 .div            = 2048,
 187         },
 188         /* Reference voltage (1.2V) */
 189         .in[1] = &(struct s3c_hwmon_chcfg) {
 190                 .name           = "smartq:reference-voltage",
 191                 .mult           = 3300,
 192                 .div            = 4096,
 193         },
 194 };
 195
 196 static struct dwc2_hsotg_plat smartq_hsotg_pdata;
 197
 198 static int __init smartq_lcd_setup_gpio(void)
 199 {
 200         int ret;
 201
 202         ret = gpio_request(S3C64XX_GPM(3), "LCD power");
 203         if (ret < 0)
 204                 return ret;
 205
 206         /* turn power off */
 207         gpio_direction_output(S3C64XX_GPM(3), 0);
 208
 209         return 0;
 210 }
 211
 212 /* GPM0 -> CS */
 213 static struct spi_gpio_platform_data smartq_lcd_control = {
 214         .sck                    = S3C64XX_GPM(1),
 215         .mosi                   = S3C64XX_GPM(2),
 216         .miso                   = S3C64XX_GPM(2),
 217 };
 218
 219 static struct platform_device smartq_lcd_control_device = {
 220         .name                   = "spi-gpio",
 221         .id                     = 1,
 222         .dev.platform_data      = &smartq_lcd_control,
 223 };
 224
 225 static void smartq_lcd_power_set(struct plat_lcd_data *pd, unsigned int power)
 226 {
 227         gpio_direction_output(S3C64XX_GPM(3), power);
 228 }
 229
 230 static struct plat_lcd_data smartq_lcd_power_data = {
 231         .set_power      = smartq_lcd_power_set,
 232 };
 233
 234 static struct platform_device smartq_lcd_power_device = {
 235         .name                   = "platform-lcd",
 236         .dev.parent             = &s3c_device_fb.dev,
 237         .dev.platform_data      = &smartq_lcd_power_data,
 238 };
 239
 240 static struct i2c_board_info smartq_i2c_devs[] __initdata = {
 241         { I2C_BOARD_INFO("wm8987", 0x1a), },
 242 };
 243
 244 static struct platform_device *smartq_devices[] __initdata = {
 245         &s3c_device_hsmmc1,     /* Init iNAND first, ... */
 246         &s3c_device_hsmmc0,     /* ... then the external SD card */
 247         &s3c_device_hsmmc2,
 248         &s3c_device_adc,
 249         &s3c_device_fb,
 250         &s3c_device_hwmon,
 251         &s3c_device_i2c0,
 252         &s3c_device_ohci,
 253         &s3c_device_rtc,
 254         &samsung_device_pwm,
 255         &s3c_device_ts,
 256         &s3c_device_usb_hsotg,
 257         &s3c64xx_device_iis0,
 258         &smartq_backlight_device,
 259         &smartq_lcd_control_device,
 260         &smartq_lcd_power_device,
 261         &smartq_usb_otg_vbus_dev,
 262 };
 263
 264 static void __init smartq_lcd_mode_set(void)
 265 {
 266         u32 tmp;
 267
 268         /* set the LCD type */
 269         tmp = __raw_readl(S3C64XX_SPCON);
 270         tmp &= ~S3C64XX_SPCON_LCD_SEL_MASK;
 271         tmp |= S3C64XX_SPCON_LCD_SEL_RGB;
 272         __raw_writel(tmp, S3C64XX_SPCON);
 273
 274         /* remove the LCD bypass */
 275         tmp = __raw_readl(S3C64XX_MODEM_MIFPCON);
 276         tmp &= ~MIFPCON_LCD_BYPASS;
 277         __raw_writel(tmp, S3C64XX_MODEM_MIFPCON);
 278 }
 279
 280 static void smartq_power_off(void)
 281 {
 282         gpio_direction_output(S3C64XX_GPK(15), 1);
 283 }
 284
 285 static int __init smartq_power_off_init(void)
 286 {
 287         int ret;
 288
 289         ret = gpio_request(S3C64XX_GPK(15), "Power control");
 290         if (ret < 0) {
 291                 pr_err("%s: failed to get GPK15\n", __func__);
 292                 return ret;
 293         }
 294
 295         /* leave power on */
 296         gpio_direction_output(S3C64XX_GPK(15), 0);
 297
 298         pm_power_off = smartq_power_off;
 299
 300         return ret;
 301 }
 302
 303 static int __init smartq_usb_host_init(void)
 304 {
 305         int ret;
 306
 307         ret = gpio_request(S3C64XX_GPL(0), "USB power control");
 308         if (ret < 0) {
 309                 pr_err("%s: failed to get GPL0\n", __func__);
 310                 return ret;
 311         }
 312
 313         ret = gpio_request(S3C64XX_GPL(1), "USB host power control");
 314         if (ret < 0) {
 315                 pr_err("%s: failed to get GPL1\n", __func__);
 316                 goto err;
 317         }
 318
 319         if (!machine_is_smartq5()) {
 320                 /* This isn't present on a SmartQ 5 board */
 321                 ret = gpio_request(S3C64XX_GPL(10), "USB host overcurrent");
 322                 if (ret < 0) {
 323                         pr_err("%s: failed to get GPL10\n", __func__);
 324                         goto err2;
 325                 }
 326         }
 327
 328         /* turn power off */
 329         gpio_direction_output(S3C64XX_GPL(0), 0);
 330         gpio_direction_output(S3C64XX_GPL(1), 0);
 331         if (!machine_is_smartq5())
 332                 gpio_direction_input(S3C64XX_GPL(10));
 333
 334         s3c_device_ohci.dev.platform_data = &smartq_usb_host_info;
 335
 336         return 0;
 337
 338 err2:
 339         gpio_free(S3C64XX_GPL(1));
 340 err:
 341         gpio_free(S3C64XX_GPL(0));
 342         return ret;
 343 }
 344
 345 static int __init smartq_wifi_init(void)
 346 {
 347         int ret;
 348
 349         ret = gpio_request(S3C64XX_GPK(1), "wifi control");
 350         if (ret < 0) {
 351                 pr_err("%s: failed to get GPK1\n", __func__);
 352                 return ret;
 353         }
 354
 355         ret = gpio_request(S3C64XX_GPK(2), "wifi reset");
 356         if (ret < 0) {
 357                 pr_err("%s: failed to get GPK2\n", __func__);
 358                 gpio_free(S3C64XX_GPK(1));
 359                 return ret;
 360         }
 361
 362         /* turn power on */
 363         gpio_direction_output(S3C64XX_GPK(1), 1);
 364
 365         /* reset device */
 366         gpio_direction_output(S3C64XX_GPK(2), 0);
 367         mdelay(100);
 368         gpio_set_value(S3C64XX_GPK(2), 1);
 369         gpio_direction_input(S3C64XX_GPK(2));
 370
 371         return 0;
 372 }
 373
 374 static struct map_desc smartq_iodesc[] __initdata = {};
 375 void __init smartq_map_io(void)
 376 {
 377         s3c64xx_init_io(smartq_iodesc, ARRAY_SIZE(smartq_iodesc));
 378         s3c64xx_set_xtal_freq(12000000);
 379         s3c64xx_set_xusbxti_freq(12000000);
 380         s3c24xx_init_uarts(smartq_uartcfgs, ARRAY_SIZE(smartq_uartcfgs));
 381         samsung_set_timer_source(SAMSUNG_PWM3, SAMSUNG_PWM4);
 382
 383         smartq_lcd_mode_set();
 384 }
 385
 386 void __init smartq_machine_init(void)
 387 {
 388         s3c_i2c0_set_platdata(NULL);
 389         dwc2_hsotg_set_platdata(&smartq_hsotg_pdata);
 390         s3c_hwmon_set_platdata(&smartq_hwmon_pdata);
 391         s3c_sdhci1_set_platdata(&smartq_internal_hsmmc_pdata);
 392         s3c_sdhci2_set_platdata(&smartq_internal_hsmmc_pdata);
 393         s3c24xx_ts_set_platdata(&smartq_touchscreen_pdata);
 394
 395         i2c_register_board_info(0, smartq_i2c_devs,
 396                                 ARRAY_SIZE(smartq_i2c_devs));
 397
 398         WARN_ON(smartq_lcd_setup_gpio());
 399         WARN_ON(smartq_power_off_init());
 400         WARN_ON(smartq_usb_host_init());
 401         WARN_ON(smartq_wifi_init());
 402
 403         pwm_add_table(smartq_pwm_lookup, ARRAY_SIZE(smartq_pwm_lookup));
 404         platform_add_devices(smartq_devices, ARRAY_SIZE(smartq_devices));
 405 }