arch/arm/mach-s3c/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/platform_data/s3c-hsotg.h>
  17
  18 #include <asm/mach-types.h>
  19 #include <asm/mach/map.h>
  20
  21 #include "map.h"
  22 #include "regs-gpio.h"
  23 #include "gpio-samsung.h"
  24
  25 #include "cpu.h"
  26 #include "devs.h"
  27 #include <linux/platform_data/i2c-s3c2410.h>
  28 #include "gpio-cfg.h"
  29 #include <linux/platform_data/hwmon-s3c.h>
  30 #include <linux/platform_data/usb-ohci-s3c2410.h>
  31 #include "sdhci.h"
  32 #include <linux/platform_data/touchscreen-s3c2410.h>
  33
  34 #include <video/platform_lcd.h>
  35
  36 #include "s3c64xx.h"
  37 #include "mach-smartq.h"
  38 #include "regs-modem-s3c64xx.h"
  39
  40 #define UCON S3C2410_UCON_DEFAULT
  41 #define ULCON (S3C2410_LCON_CS8 | S3C2410_LCON_PNONE)
  42 #define UFCON (S3C2410_UFCON_RXTRIG8 | S3C2410_UFCON_FIFOMODE)
  43
  44 static struct s3c2410_uartcfg smartq_uartcfgs[] __initdata = {
  45         [0] = {
  46                 .hwport      = 0,
  47                 .flags       = 0,
  48                 .ucon        = UCON,
  49                 .ulcon       = ULCON,
  50                 .ufcon       = UFCON,
  51         },
  52         [1] = {
  53                 .hwport      = 1,
  54                 .flags       = 0,
  55                 .ucon        = UCON,
  56                 .ulcon       = ULCON,
  57                 .ufcon       = UFCON,
  58         },
  59         [2] = {
  60                 .hwport      = 2,
  61                 .flags       = 0,
  62                 .ucon        = UCON,
  63                 .ulcon       = ULCON,
  64                 .ufcon       = UFCON,
  65         },
  66 };
  67
  68 static void smartq_usb_host_powercontrol(int port, int to)
  69 {
  70         pr_debug("%s(%d, %d)\n", __func__, port, to);
  71
  72         if (port == 0) {
  73                 gpio_set_value(S3C64XX_GPL(0), to);
  74                 gpio_set_value(S3C64XX_GPL(1), to);
  75         }
  76 }
  77
  78 static irqreturn_t smartq_usb_host_ocirq(int irq, void *pw)
  79 {
  80         struct s3c2410_hcd_info *info = pw;
  81
  82         if (gpio_get_value(S3C64XX_GPL(10)) == 0) {
  83                 pr_debug("%s: over-current irq (oc detected)\n", __func__);
  84                 s3c2410_usb_report_oc(info, 3);
  85         } else {
  86                 pr_debug("%s: over-current irq (oc cleared)\n", __func__);
  87                 s3c2410_usb_report_oc(info, 0);
  88         }
  89
  90         return IRQ_HANDLED;
  91 }
  92
  93 static void smartq_usb_host_enableoc(struct s3c2410_hcd_info *info, int on)
  94 {
  95         int ret;
  96
  97         /* This isn't present on a SmartQ 5 board */
  98         if (machine_is_smartq5())
  99                 return;
 100
 101         if (on) {
 102                 ret = request_irq(gpio_to_irq(S3C64XX_GPL(10)),
 103                                   smartq_usb_host_ocirq,
 104                                   IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING,
 105                                   "USB host overcurrent", info);
 106                 if (ret != 0)
 107                         pr_err("failed to request usb oc irq: %d\n", ret);
 108         } else {
 109                 free_irq(gpio_to_irq(S3C64XX_GPL(10)), info);
 110         }
 111 }
 112
 113 static struct s3c2410_hcd_info smartq_usb_host_info = {
 114         .port[0]        = {
 115                 .flags  = S3C_HCDFLG_USED
 116         },
 117         .port[1]        = {
 118                 .flags  = 0
 119         },
 120
 121         .power_control  = smartq_usb_host_powercontrol,
 122         .enable_oc      = smartq_usb_host_enableoc,
 123 };
 124
 125 static struct gpiod_lookup_table smartq_usb_otg_vbus_gpiod_table = {
 126         .dev_id = "gpio-vbus",
 127         .table = {
 128                 GPIO_LOOKUP("GPL", 9, "vbus", GPIO_ACTIVE_LOW),
 129                 { },
 130         },
 131 };
 132
 133 static struct platform_device smartq_usb_otg_vbus_dev = {
 134         .name                   = "gpio-vbus",
 135 };
 136
 137 static struct pwm_lookup smartq_pwm_lookup[] = {
 138         PWM_LOOKUP("samsung-pwm", 1, "pwm-backlight.0", NULL,
 139                    1000000000 / (1000 * 20), PWM_POLARITY_NORMAL),
 140 };
 141
 142 static int smartq_bl_init(struct device *dev)
 143 {
 144     s3c_gpio_cfgpin(S3C64XX_GPF(15), S3C_GPIO_SFN(2));
 145
 146     return 0;
 147 }
 148
 149 static struct platform_pwm_backlight_data smartq_backlight_data = {
 150         .max_brightness = 1000,
 151         .dft_brightness = 600,
 152         .init           = smartq_bl_init,
 153 };
 154
 155 static struct platform_device smartq_backlight_device = {
 156         .name           = "pwm-backlight",
 157         .dev            = {
 158                 .parent = &samsung_device_pwm.dev,
 159                 .platform_data = &smartq_backlight_data,
 160         },
 161 };
 162
 163 static struct s3c2410_ts_mach_info smartq_touchscreen_pdata __initdata = {
 164         .delay                  = 65535,
 165         .presc                  = 99,
 166         .oversampling_shift     = 4,
 167 };
 168
 169 static struct s3c_sdhci_platdata smartq_internal_hsmmc_pdata = {
 170         .max_width              = 4,
 171         .cd_type                = S3C_SDHCI_CD_PERMANENT,
 172 };
 173
 174 static struct s3c_hwmon_pdata smartq_hwmon_pdata __initdata = {
 175         /* Battery voltage (?-4.2V) */
 176         .in[0] = &(struct s3c_hwmon_chcfg) {
 177                 .name           = "smartq:battery-voltage",
 178                 .mult           = 3300,
 179                 .div            = 2048,
 180         },
 181         /* Reference voltage (1.2V) */
 182         .in[1] = &(struct s3c_hwmon_chcfg) {
 183                 .name           = "smartq:reference-voltage",
 184                 .mult           = 3300,
 185                 .div            = 4096,
 186         },
 187 };
 188
 189 static struct dwc2_hsotg_plat smartq_hsotg_pdata;
 190
 191 static int __init smartq_lcd_setup_gpio(void)
 192 {
 193         int ret;
 194
 195         ret = gpio_request(S3C64XX_GPM(3), "LCD power");
 196         if (ret < 0)
 197                 return ret;
 198
 199         /* turn power off */
 200         gpio_direction_output(S3C64XX_GPM(3), 0);
 201
 202         return 0;
 203 }
 204
 205 /* GPM0 -> CS */
 206 static struct spi_gpio_platform_data smartq_lcd_control = {
 207         .num_chipselect = 1,
 208 };
 209
 210 static struct platform_device smartq_lcd_control_device = {
 211         .name                   = "spi_gpio",
 212         .id                     = 1,
 213         .dev.platform_data      = &smartq_lcd_control,
 214 };
 215
 216 static struct gpiod_lookup_table smartq_lcd_control_gpiod_table = {
 217         .dev_id         = "spi_gpio",
 218         .table          = {
 219                 GPIO_LOOKUP("GPIOM", 1,
 220                             "sck", GPIO_ACTIVE_HIGH),
 221                 GPIO_LOOKUP("GPIOM", 2,
 222                             "mosi", GPIO_ACTIVE_HIGH),
 223                 GPIO_LOOKUP("GPIOM", 3,
 224                             "miso", GPIO_ACTIVE_HIGH),
 225                 GPIO_LOOKUP("GPIOM", 0,
 226                             "cs", GPIO_ACTIVE_HIGH),
 227                 { },
 228         },
 229 };
 230
 231 static void smartq_lcd_power_set(struct plat_lcd_data *pd, unsigned int power)
 232 {
 233         gpio_direction_output(S3C64XX_GPM(3), power);
 234 }
 235
 236 static struct plat_lcd_data smartq_lcd_power_data = {
 237         .set_power      = smartq_lcd_power_set,
 238 };
 239
 240 static struct platform_device smartq_lcd_power_device = {
 241         .name                   = "platform-lcd",
 242         .dev.parent             = &s3c_device_fb.dev,
 243         .dev.platform_data      = &smartq_lcd_power_data,
 244 };
 245
 246 static struct i2c_board_info smartq_i2c_devs[] __initdata = {
 247         { I2C_BOARD_INFO("wm8987", 0x1a), },
 248 };
 249
 250 static struct platform_device *smartq_devices[] __initdata = {
 251         &s3c_device_hsmmc1,     /* Init iNAND first, ... */
 252         &s3c_device_hsmmc0,     /* ... then the external SD card */
 253         &s3c_device_hsmmc2,
 254         &s3c_device_adc,
 255         &s3c_device_fb,
 256         &s3c_device_hwmon,
 257         &s3c_device_i2c0,
 258         &s3c_device_ohci,
 259         &s3c_device_rtc,
 260         &samsung_device_pwm,
 261         &s3c_device_usb_hsotg,
 262         &s3c64xx_device_iis0,
 263         &smartq_backlight_device,
 264         &smartq_lcd_control_device,
 265         &smartq_lcd_power_device,
 266         &smartq_usb_otg_vbus_dev,
 267 };
 268
 269 static void __init smartq_lcd_mode_set(void)
 270 {
 271         u32 tmp;
 272
 273         /* set the LCD type */
 274         tmp = __raw_readl(S3C64XX_SPCON);
 275         tmp &= ~S3C64XX_SPCON_LCD_SEL_MASK;
 276         tmp |= S3C64XX_SPCON_LCD_SEL_RGB;
 277         __raw_writel(tmp, S3C64XX_SPCON);
 278
 279         /* remove the LCD bypass */
 280         tmp = __raw_readl(S3C64XX_MODEM_MIFPCON);
 281         tmp &= ~MIFPCON_LCD_BYPASS;
 282         __raw_writel(tmp, S3C64XX_MODEM_MIFPCON);
 283 }
 284
 285 static void smartq_power_off(void)
 286 {
 287         gpio_direction_output(S3C64XX_GPK(15), 1);
 288 }
 289
 290 static int __init smartq_power_off_init(void)
 291 {
 292         int ret;
 293
 294         ret = gpio_request(S3C64XX_GPK(15), "Power control");
 295         if (ret < 0) {
 296                 pr_err("%s: failed to get GPK15\n", __func__);
 297                 return ret;
 298         }
 299
 300         /* leave power on */
 301         gpio_direction_output(S3C64XX_GPK(15), 0);
 302
 303         pm_power_off = smartq_power_off;
 304
 305         return ret;
 306 }
 307
 308 static int __init smartq_usb_host_init(void)
 309 {
 310         int ret;
 311
 312         ret = gpio_request(S3C64XX_GPL(0), "USB power control");
 313         if (ret < 0) {
 314                 pr_err("%s: failed to get GPL0\n", __func__);
 315                 return ret;
 316         }
 317
 318         ret = gpio_request(S3C64XX_GPL(1), "USB host power control");
 319         if (ret < 0) {
 320                 pr_err("%s: failed to get GPL1\n", __func__);
 321                 goto err;
 322         }
 323
 324         if (!machine_is_smartq5()) {
 325                 /* This isn't present on a SmartQ 5 board */
 326                 ret = gpio_request(S3C64XX_GPL(10), "USB host overcurrent");
 327                 if (ret < 0) {
 328                         pr_err("%s: failed to get GPL10\n", __func__);
 329                         goto err2;
 330                 }
 331         }
 332
 333         /* turn power off */
 334         gpio_direction_output(S3C64XX_GPL(0), 0);
 335         gpio_direction_output(S3C64XX_GPL(1), 0);
 336         if (!machine_is_smartq5())
 337                 gpio_direction_input(S3C64XX_GPL(10));
 338
 339         s3c_device_ohci.dev.platform_data = &smartq_usb_host_info;
 340
 341         return 0;
 342
 343 err2:
 344         gpio_free(S3C64XX_GPL(1));
 345 err:
 346         gpio_free(S3C64XX_GPL(0));
 347         return ret;
 348 }
 349
 350 static int __init smartq_wifi_init(void)
 351 {
 352         int ret;
 353
 354         ret = gpio_request(S3C64XX_GPK(1), "wifi control");
 355         if (ret < 0) {
 356                 pr_err("%s: failed to get GPK1\n", __func__);
 357                 return ret;
 358         }
 359
 360         ret = gpio_request(S3C64XX_GPK(2), "wifi reset");
 361         if (ret < 0) {
 362                 pr_err("%s: failed to get GPK2\n", __func__);
 363                 gpio_free(S3C64XX_GPK(1));
 364                 return ret;
 365         }
 366
 367         /* turn power on */
 368         gpio_direction_output(S3C64XX_GPK(1), 1);
 369
 370         /* reset device */
 371         gpio_direction_output(S3C64XX_GPK(2), 0);
 372         mdelay(100);
 373         gpio_set_value(S3C64XX_GPK(2), 1);
 374         gpio_direction_input(S3C64XX_GPK(2));
 375
 376         return 0;
 377 }
 378
 379 static struct map_desc smartq_iodesc[] __initdata = {};
 380 void __init smartq_map_io(void)
 381 {
 382         s3c64xx_init_io(smartq_iodesc, ARRAY_SIZE(smartq_iodesc));
 383         s3c64xx_set_xtal_freq(12000000);
 384         s3c64xx_set_xusbxti_freq(12000000);
 385         s3c24xx_init_uarts(smartq_uartcfgs, ARRAY_SIZE(smartq_uartcfgs));
 386         s3c64xx_set_timer_source(S3C64XX_PWM3, S3C64XX_PWM4);
 387
 388         smartq_lcd_mode_set();
 389 }
 390
 391 static struct gpiod_lookup_table smartq_audio_gpios = {
 392         .dev_id = "smartq-audio",
 393         .table = {
 394                 GPIO_LOOKUP("GPL", 12, "headphone detect", 0),
 395                 GPIO_LOOKUP("GPK", 12, "amplifiers shutdown", 0),
 396                 { },
 397         },
 398 };
 399
 400 void __init smartq_machine_init(void)
 401 {
 402         s3c_i2c0_set_platdata(NULL);
 403         dwc2_hsotg_set_platdata(&smartq_hsotg_pdata);
 404         s3c_hwmon_set_platdata(&smartq_hwmon_pdata);
 405         s3c_sdhci1_set_platdata(&smartq_internal_hsmmc_pdata);
 406         s3c_sdhci2_set_platdata(&smartq_internal_hsmmc_pdata);
 407         s3c64xx_ts_set_platdata(&smartq_touchscreen_pdata);
 408
 409         i2c_register_board_info(0, smartq_i2c_devs,
 410                                 ARRAY_SIZE(smartq_i2c_devs));
 411
 412         WARN_ON(smartq_lcd_setup_gpio());
 413         WARN_ON(smartq_power_off_init());
 414         WARN_ON(smartq_usb_host_init());
 415         WARN_ON(smartq_wifi_init());
 416
 417         pwm_add_table(smartq_pwm_lookup, ARRAY_SIZE(smartq_pwm_lookup));
 418         gpiod_add_lookup_table(&smartq_lcd_control_gpiod_table);
 419         gpiod_add_lookup_table(&smartq_usb_otg_vbus_gpiod_table);
 420         platform_add_devices(smartq_devices, ARRAY_SIZE(smartq_devices));
 421
 422         gpiod_add_lookup_table(&smartq_audio_gpios);
 423         platform_device_register_simple("smartq-audio", -1, NULL, 0);
 424 }