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/spi/spi_gpio.h>
  20 #include <linux/usb/gpio_vbus.h>
  21 #include <linux/platform_data/s3c-hsotg.h>
  22
  23 #include <asm/mach-types.h>
  24 #include <asm/mach/map.h>
  25
  26 #include <mach/map.h>
  27 #include <mach/regs-gpio.h>
  28 #include <mach/regs-modem.h>
  29
  30 #include <plat/clock.h>
  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 <plat/regs-serial.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
  43 #include "common.h"
  44
  45 #define UCON S3C2410_UCON_DEFAULT
  46 #define ULCON (S3C2410_LCON_CS8 | S3C2410_LCON_PNONE)
  47 #define UFCON (S3C2410_UFCON_RXTRIG8 | S3C2410_UFCON_FIFOMODE)
  48
  49 static struct s3c2410_uartcfg smartq_uartcfgs[] __initdata = {
  50         [0] = {
  51                 .hwport      = 0,
  52                 .flags       = 0,
  53                 .ucon        = UCON,
  54                 .ulcon       = ULCON,
  55                 .ufcon       = UFCON,
  56         },
  57         [1] = {
  58                 .hwport      = 1,
  59                 .flags       = 0,
  60                 .ucon        = UCON,
  61                 .ulcon       = ULCON,
  62                 .ufcon       = UFCON,
  63         },
  64         [2] = {
  65                 .hwport      = 2,
  66                 .flags       = 0,
  67                 .ucon        = UCON,
  68                 .ulcon       = ULCON,
  69                 .ufcon       = UFCON,
  70         },
  71 };
  72
  73 static void smartq_usb_host_powercontrol(int port, int to)
  74 {
  75         pr_debug("%s(%d, %d)\n", __func__, port, to);
  76
  77         if (port == 0) {
  78                 gpio_set_value(S3C64XX_GPL(0), to);
  79                 gpio_set_value(S3C64XX_GPL(1), to);
  80         }
  81 }
  82
  83 static irqreturn_t smartq_usb_host_ocirq(int irq, void *pw)
  84 {
  85         struct s3c2410_hcd_info *info = pw;
  86
  87         if (gpio_get_value(S3C64XX_GPL(10)) == 0) {
  88                 pr_debug("%s: over-current irq (oc detected)\n", __func__);
  89                 s3c2410_usb_report_oc(info, 3);
  90         } else {
  91                 pr_debug("%s: over-current irq (oc cleared)\n", __func__);
  92                 s3c2410_usb_report_oc(info, 0);
  93         }
  94
  95         return IRQ_HANDLED;
  96 }
  97
  98 static void smartq_usb_host_enableoc(struct s3c2410_hcd_info *info, int on)
  99 {
 100         int ret;
 101
 102         /* This isn't present on a SmartQ 5 board */
 103         if (machine_is_smartq5())
 104                 return;
 105
 106         if (on) {
 107                 ret = request_irq(gpio_to_irq(S3C64XX_GPL(10)),
 108                                   smartq_usb_host_ocirq, IRQF_DISABLED |
 109                                   IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING,
 110                                   "USB host overcurrent", info);
 111                 if (ret != 0)
 112                         pr_err("failed to request usb oc irq: %d\n", ret);
 113         } else {
 114                 free_irq(gpio_to_irq(S3C64XX_GPL(10)), info);
 115         }
 116 }
 117
 118 static struct s3c2410_hcd_info smartq_usb_host_info = {
 119         .port[0]        = {
 120                 .flags  = S3C_HCDFLG_USED
 121         },
 122         .port[1]        = {
 123                 .flags  = 0
 124         },
 125
 126         .power_control  = smartq_usb_host_powercontrol,
 127         .enable_oc      = smartq_usb_host_enableoc,
 128 };
 129
 130 static struct gpio_vbus_mach_info smartq_usb_otg_vbus_pdata = {
 131         .gpio_vbus              = S3C64XX_GPL(9),
 132         .gpio_pullup            = -1,
 133         .gpio_vbus_inverted     = true,
 134 };
 135
 136 static struct platform_device smartq_usb_otg_vbus_dev = {
 137         .name                   = "gpio-vbus",
 138         .dev.platform_data      = &smartq_usb_otg_vbus_pdata,
 139 };
 140
 141 static int smartq_bl_init(struct device *dev)
 142 {
 143     s3c_gpio_cfgpin(S3C64XX_GPF(15), S3C_GPIO_SFN(2));
 144
 145     return 0;
 146 }
 147
 148 static struct platform_pwm_backlight_data smartq_backlight_data = {
 149         .pwm_id         = 1,
 150         .max_brightness = 1000,
 151         .dft_brightness = 600,
 152         .pwm_period_ns  = 1000000000 / (1000 * 20),
 153         .init           = smartq_bl_init,
 154 };
 155
 156 static struct platform_device smartq_backlight_device = {
 157         .name           = "pwm-backlight",
 158         .dev            = {
 159                 .parent = &s3c_device_timer[1].dev,
 160                 .platform_data = &smartq_backlight_data,
 161         },
 162 };
 163
 164 static struct s3c2410_ts_mach_info smartq_touchscreen_pdata __initdata = {
 165         .delay                  = 65535,
 166         .presc                  = 99,
 167         .oversampling_shift     = 4,
 168 };
 169
 170 static struct s3c_sdhci_platdata smartq_internal_hsmmc_pdata = {
 171         .max_width              = 4,
 172         .cd_type                = S3C_SDHCI_CD_PERMANENT,
 173 };
 174
 175 static struct s3c_hwmon_pdata smartq_hwmon_pdata __initdata = {
 176         /* Battery voltage (?-4.2V) */
 177         .in[0] = &(struct s3c_hwmon_chcfg) {
 178                 .name           = "smartq:battery-voltage",
 179                 .mult           = 3300,
 180                 .div            = 2048,
 181         },
 182         /* Reference voltage (1.2V) */
 183         .in[1] = &(struct s3c_hwmon_chcfg) {
 184                 .name           = "smartq:reference-voltage",
 185                 .mult           = 3300,
 186                 .div            = 4096,
 187         },
 188 };
 189
 190 static struct s3c_hsotg_plat smartq_hsotg_pdata;
 191
 192 static int __init smartq_lcd_setup_gpio(void)
 193 {
 194         int ret;
 195
 196         ret = gpio_request(S3C64XX_GPM(3), "LCD power");
 197         if (ret < 0)
 198                 return ret;
 199
 200         /* turn power off */
 201         gpio_direction_output(S3C64XX_GPM(3), 0);
 202
 203         return 0;
 204 }
 205
 206 /* GPM0 -> CS */
 207 static struct spi_gpio_platform_data smartq_lcd_control = {
 208         .sck                    = S3C64XX_GPM(1),
 209         .mosi                   = S3C64XX_GPM(2),
 210         .miso                   = S3C64XX_GPM(2),
 211 };
 212
 213 static struct platform_device smartq_lcd_control_device = {
 214         .name                   = "spi-gpio",
 215         .id                     = 1,
 216         .dev.platform_data      = &smartq_lcd_control,
 217 };
 218
 219 static void smartq_lcd_power_set(struct plat_lcd_data *pd, unsigned int power)
 220 {
 221         gpio_direction_output(S3C64XX_GPM(3), power);
 222 }
 223
 224 static struct plat_lcd_data smartq_lcd_power_data = {
 225         .set_power      = smartq_lcd_power_set,
 226 };
 227
 228 static struct platform_device smartq_lcd_power_device = {
 229         .name                   = "platform-lcd",
 230         .dev.parent             = &s3c_device_fb.dev,
 231         .dev.platform_data      = &smartq_lcd_power_data,
 232 };
 233
 234 static struct i2c_board_info smartq_i2c_devs[] __initdata = {
 235         { I2C_BOARD_INFO("wm8987", 0x1a), },
 236 };
 237
 238 static struct platform_device *smartq_devices[] __initdata = {
 239         &s3c_device_hsmmc1,     /* Init iNAND first, ... */
 240         &s3c_device_hsmmc0,     /* ... then the external SD card */
 241         &s3c_device_hsmmc2,
 242         &s3c_device_adc,
 243         &s3c_device_fb,
 244         &s3c_device_hwmon,
 245         &s3c_device_i2c0,
 246         &s3c_device_ohci,
 247         &s3c_device_rtc,
 248         &s3c_device_timer[1],
 249         &s3c_device_ts,
 250         &s3c_device_usb_hsotg,
 251         &s3c64xx_device_iis0,
 252         &smartq_backlight_device,
 253         &smartq_lcd_control_device,
 254         &smartq_lcd_power_device,
 255         &smartq_usb_otg_vbus_dev,
 256 };
 257
 258 static void __init smartq_lcd_mode_set(void)
 259 {
 260         u32 tmp;
 261
 262         /* set the LCD type */
 263         tmp = __raw_readl(S3C64XX_SPCON);
 264         tmp &= ~S3C64XX_SPCON_LCD_SEL_MASK;
 265         tmp |= S3C64XX_SPCON_LCD_SEL_RGB;
 266         __raw_writel(tmp, S3C64XX_SPCON);
 267
 268         /* remove the LCD bypass */
 269         tmp = __raw_readl(S3C64XX_MODEM_MIFPCON);
 270         tmp &= ~MIFPCON_LCD_BYPASS;
 271         __raw_writel(tmp, S3C64XX_MODEM_MIFPCON);
 272 }
 273
 274 static void smartq_power_off(void)
 275 {
 276         gpio_direction_output(S3C64XX_GPK(15), 1);
 277 }
 278
 279 static int __init smartq_power_off_init(void)
 280 {
 281         int ret;
 282
 283         ret = gpio_request(S3C64XX_GPK(15), "Power control");
 284         if (ret < 0) {
 285                 pr_err("%s: failed to get GPK15\n", __func__);
 286                 return ret;
 287         }
 288
 289         /* leave power on */
 290         gpio_direction_output(S3C64XX_GPK(15), 0);
 291
 292         pm_power_off = smartq_power_off;
 293
 294         return ret;
 295 }
 296
 297 static int __init smartq_usb_host_init(void)
 298 {
 299         int ret;
 300
 301         ret = gpio_request(S3C64XX_GPL(0), "USB power control");
 302         if (ret < 0) {
 303                 pr_err("%s: failed to get GPL0\n", __func__);
 304                 return ret;
 305         }
 306
 307         ret = gpio_request(S3C64XX_GPL(1), "USB host power control");
 308         if (ret < 0) {
 309                 pr_err("%s: failed to get GPL1\n", __func__);
 310                 goto err;
 311         }
 312
 313         if (!machine_is_smartq5()) {
 314                 /* This isn't present on a SmartQ 5 board */
 315                 ret = gpio_request(S3C64XX_GPL(10), "USB host overcurrent");
 316                 if (ret < 0) {
 317                         pr_err("%s: failed to get GPL10\n", __func__);
 318                         goto err2;
 319                 }
 320         }
 321
 322         /* turn power off */
 323         gpio_direction_output(S3C64XX_GPL(0), 0);
 324         gpio_direction_output(S3C64XX_GPL(1), 0);
 325         if (!machine_is_smartq5())
 326                 gpio_direction_input(S3C64XX_GPL(10));
 327
 328         s3c_device_ohci.dev.platform_data = &smartq_usb_host_info;
 329
 330         return 0;
 331
 332 err2:
 333         gpio_free(S3C64XX_GPL(1));
 334 err:
 335         gpio_free(S3C64XX_GPL(0));
 336         return ret;
 337 }
 338
 339 static int __init smartq_usb_otg_init(void)
 340 {
 341         clk_xusbxti.rate = 12000000;
 342
 343         return 0;
 344 }
 345
 346 static int __init smartq_wifi_init(void)
 347 {
 348         int ret;
 349
 350         ret = gpio_request(S3C64XX_GPK(1), "wifi control");
 351         if (ret < 0) {
 352                 pr_err("%s: failed to get GPK1\n", __func__);
 353                 return ret;
 354         }
 355
 356         ret = gpio_request(S3C64XX_GPK(2), "wifi reset");
 357         if (ret < 0) {
 358                 pr_err("%s: failed to get GPK2\n", __func__);
 359                 gpio_free(S3C64XX_GPK(1));
 360                 return ret;
 361         }
 362
 363         /* turn power on */
 364         gpio_direction_output(S3C64XX_GPK(1), 1);
 365
 366         /* reset device */
 367         gpio_direction_output(S3C64XX_GPK(2), 0);
 368         mdelay(100);
 369         gpio_set_value(S3C64XX_GPK(2), 1);
 370         gpio_direction_input(S3C64XX_GPK(2));
 371
 372         return 0;
 373 }
 374
 375 static struct map_desc smartq_iodesc[] __initdata = {};
 376 void __init smartq_map_io(void)
 377 {
 378         s3c64xx_init_io(smartq_iodesc, ARRAY_SIZE(smartq_iodesc));
 379         s3c24xx_init_clocks(12000000);
 380         s3c24xx_init_uarts(smartq_uartcfgs, ARRAY_SIZE(smartq_uartcfgs));
 381
 382         smartq_lcd_mode_set();
 383 }
 384
 385 void __init smartq_machine_init(void)
 386 {
 387         s3c_i2c0_set_platdata(NULL);
 388         s3c_hsotg_set_platdata(&smartq_hsotg_pdata);
 389         s3c_hwmon_set_platdata(&smartq_hwmon_pdata);
 390         s3c_sdhci1_set_platdata(&smartq_internal_hsmmc_pdata);
 391         s3c_sdhci2_set_platdata(&smartq_internal_hsmmc_pdata);
 392         s3c24xx_ts_set_platdata(&smartq_touchscreen_pdata);
 393
 394         i2c_register_board_info(0, smartq_i2c_devs,
 395                                 ARRAY_SIZE(smartq_i2c_devs));
 396
 397         WARN_ON(smartq_lcd_setup_gpio());
 398         WARN_ON(smartq_power_off_init());
 399         WARN_ON(smartq_usb_host_init());
 400         WARN_ON(smartq_usb_otg_init());
 401         WARN_ON(smartq_wifi_init());
 402
 403         platform_add_devices(smartq_devices, ARRAY_SIZE(smartq_devices));
 404 }