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/usb/gpio_vbus.h>
  20
  21 #include <asm/mach-types.h>
  22 #include <asm/mach/map.h>
  23
  24 #include <mach/map.h>
  25 #include <mach/regs-gpio.h>
  26 #include <mach/regs-modem.h>
  27
  28 #include <plat/clock.h>
  29 #include <plat/cpu.h>
  30 #include <plat/devs.h>
  31 #include <plat/iic.h>
  32 #include <plat/gpio-cfg.h>
  33 #include <plat/hwmon.h>
  34 #include <plat/regs-serial.h>
  35 #include <plat/udc-hs.h>
  36 #include <plat/usb-control.h>
  37 #include <plat/sdhci.h>
  38 #include <plat/ts.h>
  39
  40 #include <video/platform_lcd.h>
  41
  42 #define UCON S3C2410_UCON_DEFAULT
  43 #define ULCON (S3C2410_LCON_CS8 | S3C2410_LCON_PNONE)
  44 #define UFCON (S3C2410_UFCON_RXTRIG8 | S3C2410_UFCON_FIFOMODE)
  45
  46 static struct s3c2410_uartcfg smartq_uartcfgs[] __initdata = {
  47         [0] = {
  48                 .hwport      = 0,
  49                 .flags       = 0,
  50                 .ucon        = UCON,
  51                 .ulcon       = ULCON,
  52                 .ufcon       = UFCON,
  53         },
  54         [1] = {
  55                 .hwport      = 1,
  56                 .flags       = 0,
  57                 .ucon        = UCON,
  58                 .ulcon       = ULCON,
  59                 .ufcon       = UFCON,
  60         },
  61         [2] = {
  62                 .hwport      = 2,
  63                 .flags       = 0,
  64                 .ucon        = UCON,
  65                 .ulcon       = ULCON,
  66                 .ufcon       = UFCON,
  67         },
  68 };
  69
  70 static void smartq_usb_host_powercontrol(int port, int to)
  71 {
  72         pr_debug("%s(%d, %d)\n", __func__, port, to);
  73
  74         if (port == 0) {
  75                 gpio_set_value(S3C64XX_GPL(0), to);
  76                 gpio_set_value(S3C64XX_GPL(1), to);
  77         }
  78 }
  79
  80 static irqreturn_t smartq_usb_host_ocirq(int irq, void *pw)
  81 {
  82         struct s3c2410_hcd_info *info = pw;
  83
  84         if (gpio_get_value(S3C64XX_GPL(10)) == 0) {
  85                 pr_debug("%s: over-current irq (oc detected)\n", __func__);
  86                 s3c2410_usb_report_oc(info, 3);
  87         } else {
  88                 pr_debug("%s: over-current irq (oc cleared)\n", __func__);
  89                 s3c2410_usb_report_oc(info, 0);
  90         }
  91
  92         return IRQ_HANDLED;
  93 }
  94
  95 static void smartq_usb_host_enableoc(struct s3c2410_hcd_info *info, int on)
  96 {
  97         int ret;
  98
  99         /* This isn't present on a SmartQ 5 board */
 100         if (machine_is_smartq5())
 101                 return;
 102
 103         if (on) {
 104                 ret = request_irq(gpio_to_irq(S3C64XX_GPL(10)),
 105                                   smartq_usb_host_ocirq, IRQF_DISABLED |
 106                                   IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING,
 107                                   "USB host overcurrent", info);
 108                 if (ret != 0)
 109                         pr_err("failed to request usb oc irq: %d\n", ret);
 110         } else {
 111                 free_irq(gpio_to_irq(S3C64XX_GPL(10)), info);
 112         }
 113 }
 114
 115 static struct s3c2410_hcd_info smartq_usb_host_info = {
 116         .port[0]        = {
 117                 .flags  = S3C_HCDFLG_USED
 118         },
 119         .port[1]        = {
 120                 .flags  = 0
 121         },
 122
 123         .power_control  = smartq_usb_host_powercontrol,
 124         .enable_oc      = smartq_usb_host_enableoc,
 125 };
 126
 127 static struct gpio_vbus_mach_info smartq_usb_otg_vbus_pdata = {
 128         .gpio_vbus              = S3C64XX_GPL(9),
 129         .gpio_pullup            = -1,
 130         .gpio_vbus_inverted     = true,
 131 };
 132
 133 static struct platform_device smartq_usb_otg_vbus_dev = {
 134         .name                   = "gpio-vbus",
 135         .dev.platform_data      = &smartq_usb_otg_vbus_pdata,
 136 };
 137
 138 static int __init smartq_bl_init(struct device *dev)
 139 {
 140     s3c_gpio_cfgpin(S3C64XX_GPF(15), S3C_GPIO_SFN(2));
 141
 142     return 0;
 143 }
 144
 145 static struct platform_pwm_backlight_data smartq_backlight_data = {
 146         .pwm_id         = 1,
 147         .max_brightness = 1000,
 148         .dft_brightness = 600,
 149         .pwm_period_ns  = 1000000000 / (1000 * 20),
 150         .init           = smartq_bl_init,
 151 };
 152
 153 static struct platform_device smartq_backlight_device = {
 154         .name           = "pwm-backlight",
 155         .dev            = {
 156                 .parent = &s3c_device_timer[1].dev,
 157                 .platform_data = &smartq_backlight_data,
 158         },
 159 };
 160
 161 static struct s3c2410_ts_mach_info smartq_touchscreen_pdata __initdata = {
 162         .delay                  = 65535,
 163         .presc                  = 99,
 164         .oversampling_shift     = 4,
 165 };
 166
 167 static struct s3c_sdhci_platdata smartq_internal_hsmmc_pdata = {
 168         .max_width              = 4,
 169         /*.broken_card_detection        = true,*/
 170 };
 171
 172 static struct s3c_hwmon_pdata smartq_hwmon_pdata __initdata = {
 173         /* Battery voltage (?-4.2V) */
 174         .in[0] = &(struct s3c_hwmon_chcfg) {
 175                 .name           = "smartq:battery-voltage",
 176                 .mult           = 3300,
 177                 .div            = 2048,
 178         },
 179         /* Reference voltage (1.2V) */
 180         .in[1] = &(struct s3c_hwmon_chcfg) {
 181                 .name           = "smartq:reference-voltage",
 182                 .mult           = 3300,
 183                 .div            = 4096,
 184         },
 185 };
 186
 187 static void smartq_lcd_power_set(struct plat_lcd_data *pd, unsigned int power)
 188 {
 189         gpio_direction_output(S3C64XX_GPM(3), power);
 190 }
 191
 192 static struct plat_lcd_data smartq_lcd_power_data = {
 193         .set_power      = smartq_lcd_power_set,
 194 };
 195
 196 static struct platform_device smartq_lcd_power_device = {
 197         .name                   = "platform-lcd",
 198         .dev.parent             = &s3c_device_fb.dev,
 199         .dev.platform_data      = &smartq_lcd_power_data,
 200 };
 201
 202
 203 static struct platform_device *smartq_devices[] __initdata = {
 204         &s3c_device_hsmmc1,     /* Init iNAND first, ... */
 205         &s3c_device_hsmmc0,     /* ... then the external SD card */
 206         &s3c_device_hsmmc2,
 207         &s3c_device_adc,
 208         &s3c_device_fb,
 209         &s3c_device_hwmon,
 210         &s3c_device_i2c0,
 211         &s3c_device_ohci,
 212         &s3c_device_rtc,
 213         &s3c_device_timer[1],
 214         &s3c_device_ts,
 215         &s3c_device_usb_hsotg,
 216         &smartq_backlight_device,
 217         &smartq_lcd_power_device,
 218         &smartq_usb_otg_vbus_dev,
 219 };
 220
 221 static void __init smartq_lcd_mode_set(void)
 222 {
 223         u32 tmp;
 224
 225         /* set the LCD type */
 226         tmp = __raw_readl(S3C64XX_SPCON);
 227         tmp &= ~S3C64XX_SPCON_LCD_SEL_MASK;
 228         tmp |= S3C64XX_SPCON_LCD_SEL_RGB;
 229         __raw_writel(tmp, S3C64XX_SPCON);
 230
 231         /* remove the LCD bypass */
 232         tmp = __raw_readl(S3C64XX_MODEM_MIFPCON);
 233         tmp &= ~MIFPCON_LCD_BYPASS;
 234         __raw_writel(tmp, S3C64XX_MODEM_MIFPCON);
 235 }
 236
 237 static void smartq_power_off(void)
 238 {
 239         gpio_direction_output(S3C64XX_GPK(15), 1);
 240 }
 241
 242 static int __init smartq_power_off_init(void)
 243 {
 244         int ret;
 245
 246         ret = gpio_request(S3C64XX_GPK(15), "Power control");
 247         if (ret < 0) {
 248                 pr_err("%s: failed to get GPK15\n", __func__);
 249                 return ret;
 250         }
 251
 252         /* leave power on */
 253         gpio_direction_output(S3C64XX_GPK(15), 0);
 254
 255
 256         pm_power_off = smartq_power_off;
 257
 258         return ret;
 259 }
 260
 261 static int __init smartq_usb_host_init(void)
 262 {
 263         int ret;
 264
 265         ret = gpio_request(S3C64XX_GPL(0), "USB power control");
 266         if (ret < 0) {
 267                 pr_err("%s: failed to get GPL0\n", __func__);
 268                 return ret;
 269         }
 270
 271         ret = gpio_request(S3C64XX_GPL(1), "USB host power control");
 272         if (ret < 0) {
 273                 pr_err("%s: failed to get GPL1\n", __func__);
 274                 goto err;
 275         }
 276
 277         if (!machine_is_smartq5()) {
 278                 /* This isn't present on a SmartQ 5 board */
 279                 ret = gpio_request(S3C64XX_GPL(10), "USB host overcurrent");
 280                 if (ret < 0) {
 281                         pr_err("%s: failed to get GPL10\n", __func__);
 282                         goto err2;
 283                 }
 284         }
 285
 286         /* turn power off */
 287         gpio_direction_output(S3C64XX_GPL(0), 0);
 288         gpio_direction_output(S3C64XX_GPL(1), 0);
 289         if (!machine_is_smartq5())
 290                 gpio_direction_input(S3C64XX_GPL(10));
 291
 292         s3c_device_ohci.dev.platform_data = &smartq_usb_host_info;
 293
 294         return 0;
 295
 296 err2:
 297         gpio_free(S3C64XX_GPL(1));
 298 err:
 299         gpio_free(S3C64XX_GPL(0));
 300         return ret;
 301 }
 302
 303 static int __init smartq_usb_otg_init(void)
 304 {
 305         clk_xusbxti.rate = 12000000;
 306
 307         return 0;
 308 }
 309
 310 static int __init smartq_wifi_init(void)
 311 {
 312         int ret;
 313
 314         ret = gpio_request(S3C64XX_GPK(1), "wifi control");
 315         if (ret < 0) {
 316                 pr_err("%s: failed to get GPK1\n", __func__);
 317                 return ret;
 318         }
 319
 320         ret = gpio_request(S3C64XX_GPK(2), "wifi reset");
 321         if (ret < 0) {
 322                 pr_err("%s: failed to get GPK2\n", __func__);
 323                 gpio_free(S3C64XX_GPK(1));
 324                 return ret;
 325         }
 326
 327         /* turn power on */
 328         gpio_direction_output(S3C64XX_GPK(1), 1);
 329
 330         /* reset device */
 331         gpio_direction_output(S3C64XX_GPK(2), 0);
 332         mdelay(100);
 333         gpio_set_value(S3C64XX_GPK(2), 1);
 334         gpio_direction_input(S3C64XX_GPK(2));
 335
 336         return 0;
 337 }
 338
 339 static struct map_desc smartq_iodesc[] __initdata = {};
 340 void __init smartq_map_io(void)
 341 {
 342         s3c64xx_init_io(smartq_iodesc, ARRAY_SIZE(smartq_iodesc));
 343         s3c24xx_init_clocks(12000000);
 344         s3c24xx_init_uarts(smartq_uartcfgs, ARRAY_SIZE(smartq_uartcfgs));
 345
 346         smartq_lcd_mode_set();
 347 }
 348
 349 void __init smartq_machine_init(void)
 350 {
 351         s3c_i2c0_set_platdata(NULL);
 352         s3c_hwmon_set_platdata(&smartq_hwmon_pdata);
 353         s3c_sdhci1_set_platdata(&smartq_internal_hsmmc_pdata);
 354         s3c_sdhci2_set_platdata(&smartq_internal_hsmmc_pdata);
 355         s3c24xx_ts_set_platdata(&smartq_touchscreen_pdata);
 356
 357         WARN_ON(smartq_power_off_init());
 358         WARN_ON(smartq_usb_host_init());
 359         WARN_ON(smartq_usb_otg_init());
 360         WARN_ON(smartq_wifi_init());
 361
 362         platform_add_devices(smartq_devices, ARRAY_SIZE(smartq_devices));
 363 }