arch/arm/mach-s3c64xx/mach-smartq.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 //
   3 // Copyright (C) 2010 Maurus Cuelenaere
   4
   5 #include <linux/delay.h>
   6 #include <linux/fb.h>
   7 #include <linux/gpio.h>
   8 #include <linux/gpio/machine.h>
   9 #include <linux/init.h>
  10 #include <linux/platform_device.h>
  11 #include <linux/pwm.h>
  12 #include <linux/pwm_backlight.h>
  13 #include <linux/serial_core.h>
  14 #include <linux/serial_s3c.h>
  15 #include <linux/spi/spi_gpio.h>
  16 #include <linux/usb/gpio_vbus.h>
  17 #include <linux/platform_data/s3c-hsotg.h>
  18
  19 #include <asm/mach-types.h>
  20 #include <asm/mach/map.h>
  21
  22 #include <mach/map.h>
  23 #include <mach/regs-gpio.h>
  24 #include <mach/gpio-samsung.h>
  25
  26 #include <plat/cpu.h>
  27 #include <plat/devs.h>
  28 #include <linux/platform_data/i2c-s3c2410.h>
  29 #include <plat/gpio-cfg.h>
  30 #include <linux/platform_data/hwmon-s3c.h>
  31 #include <linux/platform_data/usb-ohci-s3c2410.h>
  32 #include <plat/sdhci.h>
  33 #include <linux/platform_data/touchscreen-s3c2410.h>
  34
  35 #include <video/platform_lcd.h>
  36 #include <plat/samsung-time.h>
  37
  38 #include "common.h"
  39 #include "mach-smartq.h"
  40 #include "regs-modem.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,
 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 struct pwm_lookup smartq_pwm_lookup[] = {
 139         PWM_LOOKUP("samsung-pwm", 1, "pwm-backlight.0", NULL,
 140                    1000000000 / (1000 * 20), PWM_POLARITY_NORMAL),
 141 };
 142
 143 static int smartq_bl_init(struct device *dev)
 144 {
 145     s3c_gpio_cfgpin(S3C64XX_GPF(15), S3C_GPIO_SFN(2));
 146
 147     return 0;
 148 }
 149
 150 static struct platform_pwm_backlight_data smartq_backlight_data = {
 151         .max_brightness = 1000,
 152         .dft_brightness = 600,
 153         .enable_gpio    = -1,
 154         .init           = smartq_bl_init,
 155 };
 156
 157 static struct platform_device smartq_backlight_device = {
 158         .name           = "pwm-backlight",
 159         .dev            = {
 160                 .parent = &samsung_device_pwm.dev,
 161                 .platform_data = &smartq_backlight_data,
 162         },
 163 };
 164
 165 static struct s3c2410_ts_mach_info smartq_touchscreen_pdata __initdata = {
 166         .delay                  = 65535,
 167         .presc                  = 99,
 168         .oversampling_shift     = 4,
 169 };
 170
 171 static struct s3c_sdhci_platdata smartq_internal_hsmmc_pdata = {
 172         .max_width              = 4,
 173         .cd_type                = S3C_SDHCI_CD_PERMANENT,
 174 };
 175
 176 static struct s3c_hwmon_pdata smartq_hwmon_pdata __initdata = {
 177         /* Battery voltage (?-4.2V) */
 178         .in[0] = &(struct s3c_hwmon_chcfg) {
 179                 .name           = "smartq:battery-voltage",
 180                 .mult           = 3300,
 181                 .div            = 2048,
 182         },
 183         /* Reference voltage (1.2V) */
 184         .in[1] = &(struct s3c_hwmon_chcfg) {
 185                 .name           = "smartq:reference-voltage",
 186                 .mult           = 3300,
 187                 .div            = 4096,
 188         },
 189 };
 190
 191 static struct dwc2_hsotg_plat smartq_hsotg_pdata;
 192
 193 static int __init smartq_lcd_setup_gpio(void)
 194 {
 195         int ret;
 196
 197         ret = gpio_request(S3C64XX_GPM(3), "LCD power");
 198         if (ret < 0)
 199                 return ret;
 200
 201         /* turn power off */
 202         gpio_direction_output(S3C64XX_GPM(3), 0);
 203
 204         return 0;
 205 }
 206
 207 /* GPM0 -> CS */
 208 static struct spi_gpio_platform_data smartq_lcd_control = {
 209         .num_chipselect = 1,
 210 };
 211
 212 static struct platform_device smartq_lcd_control_device = {
 213         .name                   = "spi_gpio",
 214         .id                     = 1,
 215         .dev.platform_data      = &smartq_lcd_control,
 216 };
 217
 218 static struct gpiod_lookup_table smartq_lcd_control_gpiod_table = {
 219         .dev_id         = "spi_gpio",
 220         .table          = {
 221                 GPIO_LOOKUP("GPIOM", 1,
 222                             "sck", GPIO_ACTIVE_HIGH),
 223                 GPIO_LOOKUP("GPIOM", 2,
 224                             "mosi", GPIO_ACTIVE_HIGH),
 225                 GPIO_LOOKUP("GPIOM", 3,
 226                             "miso", GPIO_ACTIVE_HIGH),
 227                 GPIO_LOOKUP("GPIOM", 0,
 228                             "cs", GPIO_ACTIVE_HIGH),
 229                 { },
 230         },
 231 };
 232
 233 static void smartq_lcd_power_set(struct plat_lcd_data *pd, unsigned int power)
 234 {
 235         gpio_direction_output(S3C64XX_GPM(3), power);
 236 }
 237
 238 static struct plat_lcd_data smartq_lcd_power_data = {
 239         .set_power      = smartq_lcd_power_set,
 240 };
 241
 242 static struct platform_device smartq_lcd_power_device = {
 243         .name                   = "platform-lcd",
 244         .dev.parent             = &s3c_device_fb.dev,
 245         .dev.platform_data      = &smartq_lcd_power_data,
 246 };
 247
 248 static struct i2c_board_info smartq_i2c_devs[] __initdata = {
 249         { I2C_BOARD_INFO("wm8987", 0x1a), },
 250 };
 251
 252 static struct platform_device *smartq_devices[] __initdata = {
 253         &s3c_device_hsmmc1,     /* Init iNAND first, ... */
 254         &s3c_device_hsmmc0,     /* ... then the external SD card */
 255         &s3c_device_hsmmc2,
 256         &s3c_device_adc,
 257         &s3c_device_fb,
 258         &s3c_device_hwmon,
 259         &s3c_device_i2c0,
 260         &s3c_device_ohci,
 261         &s3c_device_rtc,
 262         &samsung_device_pwm,
 263         &s3c_device_usb_hsotg,
 264         &s3c64xx_device_iis0,
 265         &smartq_backlight_device,
 266         &smartq_lcd_control_device,
 267         &smartq_lcd_power_device,
 268         &smartq_usb_otg_vbus_dev,
 269 };
 270
 271 static void __init smartq_lcd_mode_set(void)
 272 {
 273         u32 tmp;
 274
 275         /* set the LCD type */
 276         tmp = __raw_readl(S3C64XX_SPCON);
 277         tmp &= ~S3C64XX_SPCON_LCD_SEL_MASK;
 278         tmp |= S3C64XX_SPCON_LCD_SEL_RGB;
 279         __raw_writel(tmp, S3C64XX_SPCON);
 280
 281         /* remove the LCD bypass */
 282         tmp = __raw_readl(S3C64XX_MODEM_MIFPCON);
 283         tmp &= ~MIFPCON_LCD_BYPASS;
 284         __raw_writel(tmp, S3C64XX_MODEM_MIFPCON);
 285 }
 286
 287 static void smartq_power_off(void)
 288 {
 289         gpio_direction_output(S3C64XX_GPK(15), 1);
 290 }
 291
 292 static int __init smartq_power_off_init(void)
 293 {
 294         int ret;
 295
 296         ret = gpio_request(S3C64XX_GPK(15), "Power control");
 297         if (ret < 0) {
 298                 pr_err("%s: failed to get GPK15\n", __func__);
 299                 return ret;
 300         }
 301
 302         /* leave power on */
 303         gpio_direction_output(S3C64XX_GPK(15), 0);
 304
 305         pm_power_off = smartq_power_off;
 306
 307         return ret;
 308 }
 309
 310 static int __init smartq_usb_host_init(void)
 311 {
 312         int ret;
 313
 314         ret = gpio_request(S3C64XX_GPL(0), "USB power control");
 315         if (ret < 0) {
 316                 pr_err("%s: failed to get GPL0\n", __func__);
 317                 return ret;
 318         }
 319
 320         ret = gpio_request(S3C64XX_GPL(1), "USB host power control");
 321         if (ret < 0) {
 322                 pr_err("%s: failed to get GPL1\n", __func__);
 323                 goto err;
 324         }
 325
 326         if (!machine_is_smartq5()) {
 327                 /* This isn't present on a SmartQ 5 board */
 328                 ret = gpio_request(S3C64XX_GPL(10), "USB host overcurrent");
 329                 if (ret < 0) {
 330                         pr_err("%s: failed to get GPL10\n", __func__);
 331                         goto err2;
 332                 }
 333         }
 334
 335         /* turn power off */
 336         gpio_direction_output(S3C64XX_GPL(0), 0);
 337         gpio_direction_output(S3C64XX_GPL(1), 0);
 338         if (!machine_is_smartq5())
 339                 gpio_direction_input(S3C64XX_GPL(10));
 340
 341         s3c_device_ohci.dev.platform_data = &smartq_usb_host_info;
 342
 343         return 0;
 344
 345 err2:
 346         gpio_free(S3C64XX_GPL(1));
 347 err:
 348         gpio_free(S3C64XX_GPL(0));
 349         return ret;
 350 }
 351
 352 static int __init smartq_wifi_init(void)
 353 {
 354         int ret;
 355
 356         ret = gpio_request(S3C64XX_GPK(1), "wifi control");
 357         if (ret < 0) {
 358                 pr_err("%s: failed to get GPK1\n", __func__);
 359                 return ret;
 360         }
 361
 362         ret = gpio_request(S3C64XX_GPK(2), "wifi reset");
 363         if (ret < 0) {
 364                 pr_err("%s: failed to get GPK2\n", __func__);
 365                 gpio_free(S3C64XX_GPK(1));
 366                 return ret;
 367         }
 368
 369         /* turn power on */
 370         gpio_direction_output(S3C64XX_GPK(1), 1);
 371
 372         /* reset device */
 373         gpio_direction_output(S3C64XX_GPK(2), 0);
 374         mdelay(100);
 375         gpio_set_value(S3C64XX_GPK(2), 1);
 376         gpio_direction_input(S3C64XX_GPK(2));
 377
 378         return 0;
 379 }
 380
 381 static struct map_desc smartq_iodesc[] __initdata = {};
 382 void __init smartq_map_io(void)
 383 {
 384         s3c64xx_init_io(smartq_iodesc, ARRAY_SIZE(smartq_iodesc));
 385         s3c64xx_set_xtal_freq(12000000);
 386         s3c64xx_set_xusbxti_freq(12000000);
 387         s3c24xx_init_uarts(smartq_uartcfgs, ARRAY_SIZE(smartq_uartcfgs));
 388         samsung_set_timer_source(SAMSUNG_PWM3, SAMSUNG_PWM4);
 389
 390         smartq_lcd_mode_set();
 391 }
 392
 393 static struct gpiod_lookup_table smartq_audio_gpios = {
 394         .dev_id = "smartq-audio",
 395         .table = {
 396                 GPIO_LOOKUP("GPL", 12, "headphone detect", 0),
 397                 GPIO_LOOKUP("GPK", 12, "amplifiers shutdown", 0),
 398                 { },
 399         },
 400 };
 401
 402 void __init smartq_machine_init(void)
 403 {
 404         s3c_i2c0_set_platdata(NULL);
 405         dwc2_hsotg_set_platdata(&smartq_hsotg_pdata);
 406         s3c_hwmon_set_platdata(&smartq_hwmon_pdata);
 407         s3c_sdhci1_set_platdata(&smartq_internal_hsmmc_pdata);
 408         s3c_sdhci2_set_platdata(&smartq_internal_hsmmc_pdata);
 409         s3c64xx_ts_set_platdata(&smartq_touchscreen_pdata);
 410
 411         i2c_register_board_info(0, smartq_i2c_devs,
 412                                 ARRAY_SIZE(smartq_i2c_devs));
 413
 414         WARN_ON(smartq_lcd_setup_gpio());
 415         WARN_ON(smartq_power_off_init());
 416         WARN_ON(smartq_usb_host_init());
 417         WARN_ON(smartq_wifi_init());
 418
 419         pwm_add_table(smartq_pwm_lookup, ARRAY_SIZE(smartq_pwm_lookup));
 420         gpiod_add_lookup_table(&smartq_lcd_control_gpiod_table);
 421         platform_add_devices(smartq_devices, ARRAY_SIZE(smartq_devices));
 422
 423         gpiod_add_lookup_table(&smartq_audio_gpios);
 424         platform_device_register_simple("smartq-audio", -1, NULL, 0);
 425 }