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
  22 #include <asm/mach-types.h>
  23 #include <asm/mach/map.h>
  24
  25 #include <mach/map.h>
  26 #include <mach/regs-gpio.h>
  27 #include <mach/regs-modem.h>
  28
  29 #include <plat/clock.h>
  30 #include <plat/cpu.h>
  31 #include <plat/devs.h>
  32 #include <plat/iic.h>
  33 #include <plat/gpio-cfg.h>
  34 #include <plat/hwmon.h>
  35 #include <plat/regs-serial.h>
  36 #include <plat/udc-hs.h>
  37 #include <plat/usb-control.h>
  38 #include <plat/sdhci.h>
  39 #include <plat/ts.h>
  40
  41 #include <video/platform_lcd.h>
  42
  43 #define UCON S3C2410_UCON_DEFAULT
  44 #define ULCON (S3C2410_LCON_CS8 | S3C2410_LCON_PNONE)
  45 #define UFCON (S3C2410_UFCON_RXTRIG8 | S3C2410_UFCON_FIFOMODE)
  46
  47 static struct s3c2410_uartcfg smartq_uartcfgs[] __initdata = {
  48         [0] = {
  49                 .hwport      = 0,
  50                 .flags       = 0,
  51                 .ucon        = UCON,
  52                 .ulcon       = ULCON,
  53                 .ufcon       = UFCON,
  54         },
  55         [1] = {
  56                 .hwport      = 1,
  57                 .flags       = 0,
  58                 .ucon        = UCON,
  59                 .ulcon       = ULCON,
  60                 .ufcon       = UFCON,
  61         },
  62         [2] = {
  63                 .hwport      = 2,
  64                 .flags       = 0,
  65                 .ucon        = UCON,
  66                 .ulcon       = ULCON,
  67                 .ufcon       = UFCON,
  68         },
  69 };
  70
  71 static void smartq_usb_host_powercontrol(int port, int to)
  72 {
  73         pr_debug("%s(%d, %d)\n", __func__, port, to);
  74
  75         if (port == 0) {
  76                 gpio_set_value(S3C64XX_GPL(0), to);
  77                 gpio_set_value(S3C64XX_GPL(1), to);
  78         }
  79 }
  80
  81 static irqreturn_t smartq_usb_host_ocirq(int irq, void *pw)
  82 {
  83         struct s3c2410_hcd_info *info = pw;
  84
  85         if (gpio_get_value(S3C64XX_GPL(10)) == 0) {
  86                 pr_debug("%s: over-current irq (oc detected)\n", __func__);
  87                 s3c2410_usb_report_oc(info, 3);
  88         } else {
  89                 pr_debug("%s: over-current irq (oc cleared)\n", __func__);
  90                 s3c2410_usb_report_oc(info, 0);
  91         }
  92
  93         return IRQ_HANDLED;
  94 }
  95
  96 static void smartq_usb_host_enableoc(struct s3c2410_hcd_info *info, int on)
  97 {
  98         int ret;
  99
 100         /* This isn't present on a SmartQ 5 board */
 101         if (machine_is_smartq5())
 102                 return;
 103
 104         if (on) {
 105                 ret = request_irq(gpio_to_irq(S3C64XX_GPL(10)),
 106                                   smartq_usb_host_ocirq, IRQF_DISABLED |
 107                                   IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING,
 108                                   "USB host overcurrent", info);
 109                 if (ret != 0)
 110                         pr_err("failed to request usb oc irq: %d\n", ret);
 111         } else {
 112                 free_irq(gpio_to_irq(S3C64XX_GPL(10)), info);
 113         }
 114 }
 115
 116 static struct s3c2410_hcd_info smartq_usb_host_info = {
 117         .port[0]        = {
 118                 .flags  = S3C_HCDFLG_USED
 119         },
 120         .port[1]        = {
 121                 .flags  = 0
 122         },
 123
 124         .power_control  = smartq_usb_host_powercontrol,
 125         .enable_oc      = smartq_usb_host_enableoc,
 126 };
 127
 128 static struct gpio_vbus_mach_info smartq_usb_otg_vbus_pdata = {
 129         .gpio_vbus              = S3C64XX_GPL(9),
 130         .gpio_pullup            = -1,
 131         .gpio_vbus_inverted     = true,
 132 };
 133
 134 static struct platform_device smartq_usb_otg_vbus_dev = {
 135         .name                   = "gpio-vbus",
 136         .dev.platform_data      = &smartq_usb_otg_vbus_pdata,
 137 };
 138
 139 static int __init smartq_bl_init(struct device *dev)
 140 {
 141     s3c_gpio_cfgpin(S3C64XX_GPF(15), S3C_GPIO_SFN(2));
 142
 143     return 0;
 144 }
 145
 146 static struct platform_pwm_backlight_data smartq_backlight_data = {
 147         .pwm_id         = 1,
 148         .max_brightness = 1000,
 149         .dft_brightness = 600,
 150         .pwm_period_ns  = 1000000000 / (1000 * 20),
 151         .init           = smartq_bl_init,
 152 };
 153
 154 static struct platform_device smartq_backlight_device = {
 155         .name           = "pwm-backlight",
 156         .dev            = {
 157                 .parent = &s3c_device_timer[1].dev,
 158                 .platform_data = &smartq_backlight_data,
 159         },
 160 };
 161
 162 static struct s3c2410_ts_mach_info smartq_touchscreen_pdata __initdata = {
 163         .delay                  = 65535,
 164         .presc                  = 99,
 165         .oversampling_shift     = 4,
 166 };
 167
 168 static struct s3c_sdhci_platdata smartq_internal_hsmmc_pdata = {
 169         .max_width              = 4,
 170         /*.broken_card_detection        = true,*/
 171 };
 172
 173 static struct s3c_hwmon_pdata smartq_hwmon_pdata __initdata = {
 174         /* Battery voltage (?-4.2V) */
 175         .in[0] = &(struct s3c_hwmon_chcfg) {
 176                 .name           = "smartq:battery-voltage",
 177                 .mult           = 3300,
 178                 .div            = 2048,
 179         },
 180         /* Reference voltage (1.2V) */
 181         .in[1] = &(struct s3c_hwmon_chcfg) {
 182                 .name           = "smartq:reference-voltage",
 183                 .mult           = 3300,
 184                 .div            = 4096,
 185         },
 186 };
 187
 188 static int __init smartq_lcd_setup_gpio(void)
 189 {
 190         int ret;
 191
 192         ret = gpio_request(S3C64XX_GPM(3), "LCD power");
 193         if (ret < 0)
 194                 return ret;
 195
 196         /* turn power off */
 197         gpio_direction_output(S3C64XX_GPM(3), 0);
 198
 199         return 0;
 200 }
 201
 202 /* GPM0 -> CS */
 203 static struct spi_gpio_platform_data smartq_lcd_control = {
 204         .sck                    = S3C64XX_GPM(1),
 205         .mosi                   = S3C64XX_GPM(2),
 206         .miso                   = S3C64XX_GPM(2),
 207 };
 208
 209 static struct platform_device smartq_lcd_control_device = {
 210         .name                   = "spi-gpio",
 211         .id                     = 1,
 212         .dev.platform_data      = &smartq_lcd_control,
 213 };
 214
 215 static void smartq_lcd_power_set(struct plat_lcd_data *pd, unsigned int power)
 216 {
 217         gpio_direction_output(S3C64XX_GPM(3), power);
 218 }
 219
 220 static struct plat_lcd_data smartq_lcd_power_data = {
 221         .set_power      = smartq_lcd_power_set,
 222 };
 223
 224 static struct platform_device smartq_lcd_power_device = {
 225         .name                   = "platform-lcd",
 226         .dev.parent             = &s3c_device_fb.dev,
 227         .dev.platform_data      = &smartq_lcd_power_data,
 228 };
 229
 230 static struct platform_device *smartq_devices[] __initdata = {
 231         &s3c_device_hsmmc1,     /* Init iNAND first, ... */
 232         &s3c_device_hsmmc0,     /* ... then the external SD card */
 233         &s3c_device_hsmmc2,
 234         &s3c_device_adc,
 235         &s3c_device_fb,
 236         &s3c_device_hwmon,
 237         &s3c_device_i2c0,
 238         &s3c_device_ohci,
 239         &s3c_device_rtc,
 240         &s3c_device_timer[1],
 241         &s3c_device_ts,
 242         &s3c_device_usb_hsotg,
 243         &smartq_backlight_device,
 244         &smartq_lcd_control_device,
 245         &smartq_lcd_power_device,
 246         &smartq_usb_otg_vbus_dev,
 247 };
 248
 249 static void __init smartq_lcd_mode_set(void)
 250 {
 251         u32 tmp;
 252
 253         /* set the LCD type */
 254         tmp = __raw_readl(S3C64XX_SPCON);
 255         tmp &= ~S3C64XX_SPCON_LCD_SEL_MASK;
 256         tmp |= S3C64XX_SPCON_LCD_SEL_RGB;
 257         __raw_writel(tmp, S3C64XX_SPCON);
 258
 259         /* remove the LCD bypass */
 260         tmp = __raw_readl(S3C64XX_MODEM_MIFPCON);
 261         tmp &= ~MIFPCON_LCD_BYPASS;
 262         __raw_writel(tmp, S3C64XX_MODEM_MIFPCON);
 263 }
 264
 265 static void smartq_power_off(void)
 266 {
 267         gpio_direction_output(S3C64XX_GPK(15), 1);
 268 }
 269
 270 static int __init smartq_power_off_init(void)
 271 {
 272         int ret;
 273
 274         ret = gpio_request(S3C64XX_GPK(15), "Power control");
 275         if (ret < 0) {
 276                 pr_err("%s: failed to get GPK15\n", __func__);
 277                 return ret;
 278         }
 279
 280         /* leave power on */
 281         gpio_direction_output(S3C64XX_GPK(15), 0);
 282
 283         pm_power_off = smartq_power_off;
 284
 285         return ret;
 286 }
 287
 288 static int __init smartq_usb_host_init(void)
 289 {
 290         int ret;
 291
 292         ret = gpio_request(S3C64XX_GPL(0), "USB power control");
 293         if (ret < 0) {
 294                 pr_err("%s: failed to get GPL0\n", __func__);
 295                 return ret;
 296         }
 297
 298         ret = gpio_request(S3C64XX_GPL(1), "USB host power control");
 299         if (ret < 0) {
 300                 pr_err("%s: failed to get GPL1\n", __func__);
 301                 goto err;
 302         }
 303
 304         if (!machine_is_smartq5()) {
 305                 /* This isn't present on a SmartQ 5 board */
 306                 ret = gpio_request(S3C64XX_GPL(10), "USB host overcurrent");
 307                 if (ret < 0) {
 308                         pr_err("%s: failed to get GPL10\n", __func__);
 309                         goto err2;
 310                 }
 311         }
 312
 313         /* turn power off */
 314         gpio_direction_output(S3C64XX_GPL(0), 0);
 315         gpio_direction_output(S3C64XX_GPL(1), 0);
 316         if (!machine_is_smartq5())
 317                 gpio_direction_input(S3C64XX_GPL(10));
 318
 319         s3c_device_ohci.dev.platform_data = &smartq_usb_host_info;
 320
 321         return 0;
 322
 323 err2:
 324         gpio_free(S3C64XX_GPL(1));
 325 err:
 326         gpio_free(S3C64XX_GPL(0));
 327         return ret;
 328 }
 329
 330 static int __init smartq_usb_otg_init(void)
 331 {
 332         clk_xusbxti.rate = 12000000;
 333
 334         return 0;
 335 }
 336
 337 static int __init smartq_wifi_init(void)
 338 {
 339         int ret;
 340
 341         ret = gpio_request(S3C64XX_GPK(1), "wifi control");
 342         if (ret < 0) {
 343                 pr_err("%s: failed to get GPK1\n", __func__);
 344                 return ret;
 345         }
 346
 347         ret = gpio_request(S3C64XX_GPK(2), "wifi reset");
 348         if (ret < 0) {
 349                 pr_err("%s: failed to get GPK2\n", __func__);
 350                 gpio_free(S3C64XX_GPK(1));
 351                 return ret;
 352         }
 353
 354         /* turn power on */
 355         gpio_direction_output(S3C64XX_GPK(1), 1);
 356
 357         /* reset device */
 358         gpio_direction_output(S3C64XX_GPK(2), 0);
 359         mdelay(100);
 360         gpio_set_value(S3C64XX_GPK(2), 1);
 361         gpio_direction_input(S3C64XX_GPK(2));
 362
 363         return 0;
 364 }
 365
 366 static struct map_desc smartq_iodesc[] __initdata = {};
 367 void __init smartq_map_io(void)
 368 {
 369         s3c64xx_init_io(smartq_iodesc, ARRAY_SIZE(smartq_iodesc));
 370         s3c24xx_init_clocks(12000000);
 371         s3c24xx_init_uarts(smartq_uartcfgs, ARRAY_SIZE(smartq_uartcfgs));
 372
 373         smartq_lcd_mode_set();
 374 }
 375
 376 void __init smartq_machine_init(void)
 377 {
 378         s3c_i2c0_set_platdata(NULL);
 379         s3c_hwmon_set_platdata(&smartq_hwmon_pdata);
 380         s3c_sdhci1_set_platdata(&smartq_internal_hsmmc_pdata);
 381         s3c_sdhci2_set_platdata(&smartq_internal_hsmmc_pdata);
 382         s3c24xx_ts_set_platdata(&smartq_touchscreen_pdata);
 383
 384         WARN_ON(smartq_lcd_setup_gpio());
 385         WARN_ON(smartq_power_off_init());
 386         WARN_ON(smartq_usb_host_init());
 387         WARN_ON(smartq_usb_otg_init());
 388         WARN_ON(smartq_wifi_init());
 389
 390         platform_add_devices(smartq_devices, ARRAY_SIZE(smartq_devices));
 391 }