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/gpio/machine.h>
  16 #include <linux/init.h>
  17 #include <linux/platform_device.h>
  18 #include <linux/pwm.h>
  19 #include <linux/pwm_backlight.h>
  20 #include <linux/serial_core.h>
  21 #include <linux/serial_s3c.h>
  22 #include <linux/spi/spi_gpio.h>
  23 #include <linux/usb/gpio_vbus.h>
  24 #include <linux/platform_data/s3c-hsotg.h>
  25
  26 #include <asm/mach-types.h>
  27 #include <asm/mach/map.h>
  28
  29 #include <mach/map.h>
  30 #include <mach/regs-gpio.h>
  31 #include <mach/gpio-samsung.h>
  32
  33 #include <plat/cpu.h>
  34 #include <plat/devs.h>
  35 #include <linux/platform_data/i2c-s3c2410.h>
  36 #include <plat/gpio-cfg.h>
  37 #include <linux/platform_data/hwmon-s3c.h>
  38 #include <linux/platform_data/usb-ohci-s3c2410.h>
  39 #include <plat/sdhci.h>
  40 #include <linux/platform_data/touchscreen-s3c2410.h>
  41
  42 #include <video/platform_lcd.h>
  43 #include <plat/samsung-time.h>
  44
  45 #include "common.h"
  46 #include "regs-modem.h"
  47
  48 #define UCON S3C2410_UCON_DEFAULT
  49 #define ULCON (S3C2410_LCON_CS8 | S3C2410_LCON_PNONE)
  50 #define UFCON (S3C2410_UFCON_RXTRIG8 | S3C2410_UFCON_FIFOMODE)
  51
  52 static struct s3c2410_uartcfg smartq_uartcfgs[] __initdata = {
  53         [0] = {
  54                 .hwport      = 0,
  55                 .flags       = 0,
  56                 .ucon        = UCON,
  57                 .ulcon       = ULCON,
  58                 .ufcon       = UFCON,
  59         },
  60         [1] = {
  61                 .hwport      = 1,
  62                 .flags       = 0,
  63                 .ucon        = UCON,
  64                 .ulcon       = ULCON,
  65                 .ufcon       = UFCON,
  66         },
  67         [2] = {
  68                 .hwport      = 2,
  69                 .flags       = 0,
  70                 .ucon        = UCON,
  71                 .ulcon       = ULCON,
  72                 .ufcon       = UFCON,
  73         },
  74 };
  75
  76 static void smartq_usb_host_powercontrol(int port, int to)
  77 {
  78         pr_debug("%s(%d, %d)\n", __func__, port, to);
  79
  80         if (port == 0) {
  81                 gpio_set_value(S3C64XX_GPL(0), to);
  82                 gpio_set_value(S3C64XX_GPL(1), to);
  83         }
  84 }
  85
  86 static irqreturn_t smartq_usb_host_ocirq(int irq, void *pw)
  87 {
  88         struct s3c2410_hcd_info *info = pw;
  89
  90         if (gpio_get_value(S3C64XX_GPL(10)) == 0) {
  91                 pr_debug("%s: over-current irq (oc detected)\n", __func__);
  92                 s3c2410_usb_report_oc(info, 3);
  93         } else {
  94                 pr_debug("%s: over-current irq (oc cleared)\n", __func__);
  95                 s3c2410_usb_report_oc(info, 0);
  96         }
  97
  98         return IRQ_HANDLED;
  99 }
 100
 101 static void smartq_usb_host_enableoc(struct s3c2410_hcd_info *info, int on)
 102 {
 103         int ret;
 104
 105         /* This isn't present on a SmartQ 5 board */
 106         if (machine_is_smartq5())
 107                 return;
 108
 109         if (on) {
 110                 ret = request_irq(gpio_to_irq(S3C64XX_GPL(10)),
 111                                   smartq_usb_host_ocirq,
 112                                   IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING,
 113                                   "USB host overcurrent", info);
 114                 if (ret != 0)
 115                         pr_err("failed to request usb oc irq: %d\n", ret);
 116         } else {
 117                 free_irq(gpio_to_irq(S3C64XX_GPL(10)), info);
 118         }
 119 }
 120
 121 static struct s3c2410_hcd_info smartq_usb_host_info = {
 122         .port[0]        = {
 123                 .flags  = S3C_HCDFLG_USED
 124         },
 125         .port[1]        = {
 126                 .flags  = 0
 127         },
 128
 129         .power_control  = smartq_usb_host_powercontrol,
 130         .enable_oc      = smartq_usb_host_enableoc,
 131 };
 132
 133 static struct gpio_vbus_mach_info smartq_usb_otg_vbus_pdata = {
 134         .gpio_vbus              = S3C64XX_GPL(9),
 135         .gpio_pullup            = -1,
 136         .gpio_vbus_inverted     = true,
 137 };
 138
 139 static struct platform_device smartq_usb_otg_vbus_dev = {
 140         .name                   = "gpio-vbus",
 141         .dev.platform_data      = &smartq_usb_otg_vbus_pdata,
 142 };
 143
 144 static struct pwm_lookup smartq_pwm_lookup[] = {
 145         PWM_LOOKUP("samsung-pwm", 1, "pwm-backlight.0", NULL,
 146                    1000000000 / (1000 * 20), PWM_POLARITY_NORMAL),
 147 };
 148
 149 static int smartq_bl_init(struct device *dev)
 150 {
 151     s3c_gpio_cfgpin(S3C64XX_GPF(15), S3C_GPIO_SFN(2));
 152
 153     return 0;
 154 }
 155
 156 static struct platform_pwm_backlight_data smartq_backlight_data = {
 157         .max_brightness = 1000,
 158         .dft_brightness = 600,
 159         .enable_gpio    = -1,
 160         .init           = smartq_bl_init,
 161 };
 162
 163 static struct platform_device smartq_backlight_device = {
 164         .name           = "pwm-backlight",
 165         .dev            = {
 166                 .parent = &samsung_device_pwm.dev,
 167                 .platform_data = &smartq_backlight_data,
 168         },
 169 };
 170
 171 static struct s3c2410_ts_mach_info smartq_touchscreen_pdata __initdata = {
 172         .delay                  = 65535,
 173         .presc                  = 99,
 174         .oversampling_shift     = 4,
 175 };
 176
 177 static struct s3c_sdhci_platdata smartq_internal_hsmmc_pdata = {
 178         .max_width              = 4,
 179         .cd_type                = S3C_SDHCI_CD_PERMANENT,
 180 };
 181
 182 static struct s3c_hwmon_pdata smartq_hwmon_pdata __initdata = {
 183         /* Battery voltage (?-4.2V) */
 184         .in[0] = &(struct s3c_hwmon_chcfg) {
 185                 .name           = "smartq:battery-voltage",
 186                 .mult           = 3300,
 187                 .div            = 2048,
 188         },
 189         /* Reference voltage (1.2V) */
 190         .in[1] = &(struct s3c_hwmon_chcfg) {
 191                 .name           = "smartq:reference-voltage",
 192                 .mult           = 3300,
 193                 .div            = 4096,
 194         },
 195 };
 196
 197 static struct dwc2_hsotg_plat smartq_hsotg_pdata;
 198
 199 static int __init smartq_lcd_setup_gpio(void)
 200 {
 201         int ret;
 202
 203         ret = gpio_request(S3C64XX_GPM(3), "LCD power");
 204         if (ret < 0)
 205                 return ret;
 206
 207         /* turn power off */
 208         gpio_direction_output(S3C64XX_GPM(3), 0);
 209
 210         return 0;
 211 }
 212
 213 /* GPM0 -> CS */
 214 static struct spi_gpio_platform_data smartq_lcd_control = {
 215         .sck                    = S3C64XX_GPM(1),
 216         .mosi                   = S3C64XX_GPM(2),
 217         .miso                   = S3C64XX_GPM(2),
 218 };
 219
 220 static struct platform_device smartq_lcd_control_device = {
 221         .name                   = "spi-gpio",
 222         .id                     = 1,
 223         .dev.platform_data      = &smartq_lcd_control,
 224 };
 225
 226 static void smartq_lcd_power_set(struct plat_lcd_data *pd, unsigned int power)
 227 {
 228         gpio_direction_output(S3C64XX_GPM(3), power);
 229 }
 230
 231 static struct plat_lcd_data smartq_lcd_power_data = {
 232         .set_power      = smartq_lcd_power_set,
 233 };
 234
 235 static struct platform_device smartq_lcd_power_device = {
 236         .name                   = "platform-lcd",
 237         .dev.parent             = &s3c_device_fb.dev,
 238         .dev.platform_data      = &smartq_lcd_power_data,
 239 };
 240
 241 static struct i2c_board_info smartq_i2c_devs[] __initdata = {
 242         { I2C_BOARD_INFO("wm8987", 0x1a), },
 243 };
 244
 245 static struct platform_device *smartq_devices[] __initdata = {
 246         &s3c_device_hsmmc1,     /* Init iNAND first, ... */
 247         &s3c_device_hsmmc0,     /* ... then the external SD card */
 248         &s3c_device_hsmmc2,
 249         &s3c_device_adc,
 250         &s3c_device_fb,
 251         &s3c_device_hwmon,
 252         &s3c_device_i2c0,
 253         &s3c_device_ohci,
 254         &s3c_device_rtc,
 255         &samsung_device_pwm,
 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 static struct gpiod_lookup_table smartq_audio_gpios = {
 387         .dev_id = "smartq-audio",
 388         .table = {
 389                 GPIO_LOOKUP("GPL", 12, "headphone detect", 0),
 390                 GPIO_LOOKUP("GPK", 12, "amplifiers shutdown", 0),
 391                 { },
 392         },
 393 };
 394
 395 void __init smartq_machine_init(void)
 396 {
 397         s3c_i2c0_set_platdata(NULL);
 398         dwc2_hsotg_set_platdata(&smartq_hsotg_pdata);
 399         s3c_hwmon_set_platdata(&smartq_hwmon_pdata);
 400         s3c_sdhci1_set_platdata(&smartq_internal_hsmmc_pdata);
 401         s3c_sdhci2_set_platdata(&smartq_internal_hsmmc_pdata);
 402         s3c64xx_ts_set_platdata(&smartq_touchscreen_pdata);
 403
 404         i2c_register_board_info(0, smartq_i2c_devs,
 405                                 ARRAY_SIZE(smartq_i2c_devs));
 406
 407         WARN_ON(smartq_lcd_setup_gpio());
 408         WARN_ON(smartq_power_off_init());
 409         WARN_ON(smartq_usb_host_init());
 410         WARN_ON(smartq_wifi_init());
 411
 412         pwm_add_table(smartq_pwm_lookup, ARRAY_SIZE(smartq_pwm_lookup));
 413         platform_add_devices(smartq_devices, ARRAY_SIZE(smartq_devices));
 414
 415         gpiod_add_lookup_table(&smartq_audio_gpios);
 416         platform_device_register_simple("smartq-audio", -1, NULL, 0);
 417 }