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 "mach-smartq.h"
  47 #include "regs-modem.h"
  48
  49 #define UCON S3C2410_UCON_DEFAULT
  50 #define ULCON (S3C2410_LCON_CS8 | S3C2410_LCON_PNONE)
  51 #define UFCON (S3C2410_UFCON_RXTRIG8 | S3C2410_UFCON_FIFOMODE)
  52
  53 static struct s3c2410_uartcfg smartq_uartcfgs[] __initdata = {
  54         [0] = {
  55                 .hwport      = 0,
  56                 .flags       = 0,
  57                 .ucon        = UCON,
  58                 .ulcon       = ULCON,
  59                 .ufcon       = UFCON,
  60         },
  61         [1] = {
  62                 .hwport      = 1,
  63                 .flags       = 0,
  64                 .ucon        = UCON,
  65                 .ulcon       = ULCON,
  66                 .ufcon       = UFCON,
  67         },
  68         [2] = {
  69                 .hwport      = 2,
  70                 .flags       = 0,
  71                 .ucon        = UCON,
  72                 .ulcon       = ULCON,
  73                 .ufcon       = UFCON,
  74         },
  75 };
  76
  77 static void smartq_usb_host_powercontrol(int port, int to)
  78 {
  79         pr_debug("%s(%d, %d)\n", __func__, port, to);
  80
  81         if (port == 0) {
  82                 gpio_set_value(S3C64XX_GPL(0), to);
  83                 gpio_set_value(S3C64XX_GPL(1), to);
  84         }
  85 }
  86
  87 static irqreturn_t smartq_usb_host_ocirq(int irq, void *pw)
  88 {
  89         struct s3c2410_hcd_info *info = pw;
  90
  91         if (gpio_get_value(S3C64XX_GPL(10)) == 0) {
  92                 pr_debug("%s: over-current irq (oc detected)\n", __func__);
  93                 s3c2410_usb_report_oc(info, 3);
  94         } else {
  95                 pr_debug("%s: over-current irq (oc cleared)\n", __func__);
  96                 s3c2410_usb_report_oc(info, 0);
  97         }
  98
  99         return IRQ_HANDLED;
 100 }
 101
 102 static void smartq_usb_host_enableoc(struct s3c2410_hcd_info *info, int on)
 103 {
 104         int ret;
 105
 106         /* This isn't present on a SmartQ 5 board */
 107         if (machine_is_smartq5())
 108                 return;
 109
 110         if (on) {
 111                 ret = request_irq(gpio_to_irq(S3C64XX_GPL(10)),
 112                                   smartq_usb_host_ocirq,
 113                                   IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING,
 114                                   "USB host overcurrent", info);
 115                 if (ret != 0)
 116                         pr_err("failed to request usb oc irq: %d\n", ret);
 117         } else {
 118                 free_irq(gpio_to_irq(S3C64XX_GPL(10)), info);
 119         }
 120 }
 121
 122 static struct s3c2410_hcd_info smartq_usb_host_info = {
 123         .port[0]        = {
 124                 .flags  = S3C_HCDFLG_USED
 125         },
 126         .port[1]        = {
 127                 .flags  = 0
 128         },
 129
 130         .power_control  = smartq_usb_host_powercontrol,
 131         .enable_oc      = smartq_usb_host_enableoc,
 132 };
 133
 134 static struct gpio_vbus_mach_info smartq_usb_otg_vbus_pdata = {
 135         .gpio_vbus              = S3C64XX_GPL(9),
 136         .gpio_pullup            = -1,
 137         .gpio_vbus_inverted     = true,
 138 };
 139
 140 static struct platform_device smartq_usb_otg_vbus_dev = {
 141         .name                   = "gpio-vbus",
 142         .dev.platform_data      = &smartq_usb_otg_vbus_pdata,
 143 };
 144
 145 static struct pwm_lookup smartq_pwm_lookup[] = {
 146         PWM_LOOKUP("samsung-pwm", 1, "pwm-backlight.0", NULL,
 147                    1000000000 / (1000 * 20), PWM_POLARITY_NORMAL),
 148 };
 149
 150 static int smartq_bl_init(struct device *dev)
 151 {
 152     s3c_gpio_cfgpin(S3C64XX_GPF(15), S3C_GPIO_SFN(2));
 153
 154     return 0;
 155 }
 156
 157 static struct platform_pwm_backlight_data smartq_backlight_data = {
 158         .max_brightness = 1000,
 159         .dft_brightness = 600,
 160         .enable_gpio    = -1,
 161         .init           = smartq_bl_init,
 162 };
 163
 164 static struct platform_device smartq_backlight_device = {
 165         .name           = "pwm-backlight",
 166         .dev            = {
 167                 .parent = &samsung_device_pwm.dev,
 168                 .platform_data = &smartq_backlight_data,
 169         },
 170 };
 171
 172 static struct s3c2410_ts_mach_info smartq_touchscreen_pdata __initdata = {
 173         .delay                  = 65535,
 174         .presc                  = 99,
 175         .oversampling_shift     = 4,
 176 };
 177
 178 static struct s3c_sdhci_platdata smartq_internal_hsmmc_pdata = {
 179         .max_width              = 4,
 180         .cd_type                = S3C_SDHCI_CD_PERMANENT,
 181 };
 182
 183 static struct s3c_hwmon_pdata smartq_hwmon_pdata __initdata = {
 184         /* Battery voltage (?-4.2V) */
 185         .in[0] = &(struct s3c_hwmon_chcfg) {
 186                 .name           = "smartq:battery-voltage",
 187                 .mult           = 3300,
 188                 .div            = 2048,
 189         },
 190         /* Reference voltage (1.2V) */
 191         .in[1] = &(struct s3c_hwmon_chcfg) {
 192                 .name           = "smartq:reference-voltage",
 193                 .mult           = 3300,
 194                 .div            = 4096,
 195         },
 196 };
 197
 198 static struct dwc2_hsotg_plat smartq_hsotg_pdata;
 199
 200 static int __init smartq_lcd_setup_gpio(void)
 201 {
 202         int ret;
 203
 204         ret = gpio_request(S3C64XX_GPM(3), "LCD power");
 205         if (ret < 0)
 206                 return ret;
 207
 208         /* turn power off */
 209         gpio_direction_output(S3C64XX_GPM(3), 0);
 210
 211         return 0;
 212 }
 213
 214 /* GPM0 -> CS */
 215 static struct spi_gpio_platform_data smartq_lcd_control = {
 216         .sck                    = S3C64XX_GPM(1),
 217         .mosi                   = S3C64XX_GPM(2),
 218         .miso                   = S3C64XX_GPM(2),
 219 };
 220
 221 static struct platform_device smartq_lcd_control_device = {
 222         .name                   = "spi-gpio",
 223         .id                     = 1,
 224         .dev.platform_data      = &smartq_lcd_control,
 225 };
 226
 227 static void smartq_lcd_power_set(struct plat_lcd_data *pd, unsigned int power)
 228 {
 229         gpio_direction_output(S3C64XX_GPM(3), power);
 230 }
 231
 232 static struct plat_lcd_data smartq_lcd_power_data = {
 233         .set_power      = smartq_lcd_power_set,
 234 };
 235
 236 static struct platform_device smartq_lcd_power_device = {
 237         .name                   = "platform-lcd",
 238         .dev.parent             = &s3c_device_fb.dev,
 239         .dev.platform_data      = &smartq_lcd_power_data,
 240 };
 241
 242 static struct i2c_board_info smartq_i2c_devs[] __initdata = {
 243         { I2C_BOARD_INFO("wm8987", 0x1a), },
 244 };
 245
 246 static struct platform_device *smartq_devices[] __initdata = {
 247         &s3c_device_hsmmc1,     /* Init iNAND first, ... */
 248         &s3c_device_hsmmc0,     /* ... then the external SD card */
 249         &s3c_device_hsmmc2,
 250         &s3c_device_adc,
 251         &s3c_device_fb,
 252         &s3c_device_hwmon,
 253         &s3c_device_i2c0,
 254         &s3c_device_ohci,
 255         &s3c_device_rtc,
 256         &samsung_device_pwm,
 257         &s3c_device_usb_hsotg,
 258         &s3c64xx_device_iis0,
 259         &smartq_backlight_device,
 260         &smartq_lcd_control_device,
 261         &smartq_lcd_power_device,
 262         &smartq_usb_otg_vbus_dev,
 263 };
 264
 265 static void __init smartq_lcd_mode_set(void)
 266 {
 267         u32 tmp;
 268
 269         /* set the LCD type */
 270         tmp = __raw_readl(S3C64XX_SPCON);
 271         tmp &= ~S3C64XX_SPCON_LCD_SEL_MASK;
 272         tmp |= S3C64XX_SPCON_LCD_SEL_RGB;
 273         __raw_writel(tmp, S3C64XX_SPCON);
 274
 275         /* remove the LCD bypass */
 276         tmp = __raw_readl(S3C64XX_MODEM_MIFPCON);
 277         tmp &= ~MIFPCON_LCD_BYPASS;
 278         __raw_writel(tmp, S3C64XX_MODEM_MIFPCON);
 279 }
 280
 281 static void smartq_power_off(void)
 282 {
 283         gpio_direction_output(S3C64XX_GPK(15), 1);
 284 }
 285
 286 static int __init smartq_power_off_init(void)
 287 {
 288         int ret;
 289
 290         ret = gpio_request(S3C64XX_GPK(15), "Power control");
 291         if (ret < 0) {
 292                 pr_err("%s: failed to get GPK15\n", __func__);
 293                 return ret;
 294         }
 295
 296         /* leave power on */
 297         gpio_direction_output(S3C64XX_GPK(15), 0);
 298
 299         pm_power_off = smartq_power_off;
 300
 301         return ret;
 302 }
 303
 304 static int __init smartq_usb_host_init(void)
 305 {
 306         int ret;
 307
 308         ret = gpio_request(S3C64XX_GPL(0), "USB power control");
 309         if (ret < 0) {
 310                 pr_err("%s: failed to get GPL0\n", __func__);
 311                 return ret;
 312         }
 313
 314         ret = gpio_request(S3C64XX_GPL(1), "USB host power control");
 315         if (ret < 0) {
 316                 pr_err("%s: failed to get GPL1\n", __func__);
 317                 goto err;
 318         }
 319
 320         if (!machine_is_smartq5()) {
 321                 /* This isn't present on a SmartQ 5 board */
 322                 ret = gpio_request(S3C64XX_GPL(10), "USB host overcurrent");
 323                 if (ret < 0) {
 324                         pr_err("%s: failed to get GPL10\n", __func__);
 325                         goto err2;
 326                 }
 327         }
 328
 329         /* turn power off */
 330         gpio_direction_output(S3C64XX_GPL(0), 0);
 331         gpio_direction_output(S3C64XX_GPL(1), 0);
 332         if (!machine_is_smartq5())
 333                 gpio_direction_input(S3C64XX_GPL(10));
 334
 335         s3c_device_ohci.dev.platform_data = &smartq_usb_host_info;
 336
 337         return 0;
 338
 339 err2:
 340         gpio_free(S3C64XX_GPL(1));
 341 err:
 342         gpio_free(S3C64XX_GPL(0));
 343         return ret;
 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         s3c64xx_set_xtal_freq(12000000);
 380         s3c64xx_set_xusbxti_freq(12000000);
 381         s3c24xx_init_uarts(smartq_uartcfgs, ARRAY_SIZE(smartq_uartcfgs));
 382         samsung_set_timer_source(SAMSUNG_PWM3, SAMSUNG_PWM4);
 383
 384         smartq_lcd_mode_set();
 385 }
 386
 387 static struct gpiod_lookup_table smartq_audio_gpios = {
 388         .dev_id = "smartq-audio",
 389         .table = {
 390                 GPIO_LOOKUP("GPL", 12, "headphone detect", 0),
 391                 GPIO_LOOKUP("GPK", 12, "amplifiers shutdown", 0),
 392                 { },
 393         },
 394 };
 395
 396 void __init smartq_machine_init(void)
 397 {
 398         s3c_i2c0_set_platdata(NULL);
 399         dwc2_hsotg_set_platdata(&smartq_hsotg_pdata);
 400         s3c_hwmon_set_platdata(&smartq_hwmon_pdata);
 401         s3c_sdhci1_set_platdata(&smartq_internal_hsmmc_pdata);
 402         s3c_sdhci2_set_platdata(&smartq_internal_hsmmc_pdata);
 403         s3c64xx_ts_set_platdata(&smartq_touchscreen_pdata);
 404
 405         i2c_register_board_info(0, smartq_i2c_devs,
 406                                 ARRAY_SIZE(smartq_i2c_devs));
 407
 408         WARN_ON(smartq_lcd_setup_gpio());
 409         WARN_ON(smartq_power_off_init());
 410         WARN_ON(smartq_usb_host_init());
 411         WARN_ON(smartq_wifi_init());
 412
 413         pwm_add_table(smartq_pwm_lookup, ARRAY_SIZE(smartq_pwm_lookup));
 414         platform_add_devices(smartq_devices, ARRAY_SIZE(smartq_devices));
 415
 416         gpiod_add_lookup_table(&smartq_audio_gpios);
 417         platform_device_register_simple("smartq-audio", -1, NULL, 0);
 418 }