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