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/platform_data/s3c-hsotg.h>
  17
  18 #include <asm/mach-types.h>
  19 #include <asm/mach/map.h>
  20
  21 #include <mach/map.h>
  22 #include <mach/regs-gpio.h>
  23 #include <mach/gpio-samsung.h>
  24
  25 #include <plat/cpu.h>
  26 #include <plat/devs.h>
  27 #include <linux/platform_data/i2c-s3c2410.h>
  28 #include <plat/gpio-cfg.h>
  29 #include <linux/platform_data/hwmon-s3c.h>
  30 #include <linux/platform_data/usb-ohci-s3c2410.h>
  31 #include <plat/sdhci.h>
  32 #include <linux/platform_data/touchscreen-s3c2410.h>
  33
  34 #include <video/platform_lcd.h>
  35 #include <plat/samsung-time.h>
  36
  37 #include "common.h"
  38 #include "mach-smartq.h"
  39 #include "regs-modem.h"
  40
  41 #define UCON S3C2410_UCON_DEFAULT
  42 #define ULCON (S3C2410_LCON_CS8 | S3C2410_LCON_PNONE)
  43 #define UFCON (S3C2410_UFCON_RXTRIG8 | S3C2410_UFCON_FIFOMODE)
  44
  45 static struct s3c2410_uartcfg smartq_uartcfgs[] __initdata = {
  46         [0] = {
  47                 .hwport      = 0,
  48                 .flags       = 0,
  49                 .ucon        = UCON,
  50                 .ulcon       = ULCON,
  51                 .ufcon       = UFCON,
  52         },
  53         [1] = {
  54                 .hwport      = 1,
  55                 .flags       = 0,
  56                 .ucon        = UCON,
  57                 .ulcon       = ULCON,
  58                 .ufcon       = UFCON,
  59         },
  60         [2] = {
  61                 .hwport      = 2,
  62                 .flags       = 0,
  63                 .ucon        = UCON,
  64                 .ulcon       = ULCON,
  65                 .ufcon       = UFCON,
  66         },
  67 };
  68
  69 static void smartq_usb_host_powercontrol(int port, int to)
  70 {
  71         pr_debug("%s(%d, %d)\n", __func__, port, to);
  72
  73         if (port == 0) {
  74                 gpio_set_value(S3C64XX_GPL(0), to);
  75                 gpio_set_value(S3C64XX_GPL(1), to);
  76         }
  77 }
  78
  79 static irqreturn_t smartq_usb_host_ocirq(int irq, void *pw)
  80 {
  81         struct s3c2410_hcd_info *info = pw;
  82
  83         if (gpio_get_value(S3C64XX_GPL(10)) == 0) {
  84                 pr_debug("%s: over-current irq (oc detected)\n", __func__);
  85                 s3c2410_usb_report_oc(info, 3);
  86         } else {
  87                 pr_debug("%s: over-current irq (oc cleared)\n", __func__);
  88                 s3c2410_usb_report_oc(info, 0);
  89         }
  90
  91         return IRQ_HANDLED;
  92 }
  93
  94 static void smartq_usb_host_enableoc(struct s3c2410_hcd_info *info, int on)
  95 {
  96         int ret;
  97
  98         /* This isn't present on a SmartQ 5 board */
  99         if (machine_is_smartq5())
 100                 return;
 101
 102         if (on) {
 103                 ret = request_irq(gpio_to_irq(S3C64XX_GPL(10)),
 104                                   smartq_usb_host_ocirq,
 105                                   IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING,
 106                                   "USB host overcurrent", info);
 107                 if (ret != 0)
 108                         pr_err("failed to request usb oc irq: %d\n", ret);
 109         } else {
 110                 free_irq(gpio_to_irq(S3C64XX_GPL(10)), info);
 111         }
 112 }
 113
 114 static struct s3c2410_hcd_info smartq_usb_host_info = {
 115         .port[0]        = {
 116                 .flags  = S3C_HCDFLG_USED
 117         },
 118         .port[1]        = {
 119                 .flags  = 0
 120         },
 121
 122         .power_control  = smartq_usb_host_powercontrol,
 123         .enable_oc      = smartq_usb_host_enableoc,
 124 };
 125
 126 static struct gpiod_lookup_table smartq_usb_otg_vbus_gpiod_table = {
 127         .dev_id = "gpio-vbus",
 128         .table = {
 129                 GPIO_LOOKUP("GPL", 9, "vbus", GPIO_ACTIVE_LOW),
 130                 { },
 131         },
 132 };
 133
 134 static struct platform_device smartq_usb_otg_vbus_dev = {
 135         .name                   = "gpio-vbus",
 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         .init           = smartq_bl_init,
 154 };
 155
 156 static struct platform_device smartq_backlight_device = {
 157         .name           = "pwm-backlight",
 158         .dev            = {
 159                 .parent = &samsung_device_pwm.dev,
 160                 .platform_data = &smartq_backlight_data,
 161         },
 162 };
 163
 164 static struct s3c2410_ts_mach_info smartq_touchscreen_pdata __initdata = {
 165         .delay                  = 65535,
 166         .presc                  = 99,
 167         .oversampling_shift     = 4,
 168 };
 169
 170 static struct s3c_sdhci_platdata smartq_internal_hsmmc_pdata = {
 171         .max_width              = 4,
 172         .cd_type                = S3C_SDHCI_CD_PERMANENT,
 173 };
 174
 175 static struct s3c_hwmon_pdata smartq_hwmon_pdata __initdata = {
 176         /* Battery voltage (?-4.2V) */
 177         .in[0] = &(struct s3c_hwmon_chcfg) {
 178                 .name           = "smartq:battery-voltage",
 179                 .mult           = 3300,
 180                 .div            = 2048,
 181         },
 182         /* Reference voltage (1.2V) */
 183         .in[1] = &(struct s3c_hwmon_chcfg) {
 184                 .name           = "smartq:reference-voltage",
 185                 .mult           = 3300,
 186                 .div            = 4096,
 187         },
 188 };
 189
 190 static struct dwc2_hsotg_plat smartq_hsotg_pdata;
 191
 192 static int __init smartq_lcd_setup_gpio(void)
 193 {
 194         int ret;
 195
 196         ret = gpio_request(S3C64XX_GPM(3), "LCD power");
 197         if (ret < 0)
 198                 return ret;
 199
 200         /* turn power off */
 201         gpio_direction_output(S3C64XX_GPM(3), 0);
 202
 203         return 0;
 204 }
 205
 206 /* GPM0 -> CS */
 207 static struct spi_gpio_platform_data smartq_lcd_control = {
 208         .num_chipselect = 1,
 209 };
 210
 211 static struct platform_device smartq_lcd_control_device = {
 212         .name                   = "spi_gpio",
 213         .id                     = 1,
 214         .dev.platform_data      = &smartq_lcd_control,
 215 };
 216
 217 static struct gpiod_lookup_table smartq_lcd_control_gpiod_table = {
 218         .dev_id         = "spi_gpio",
 219         .table          = {
 220                 GPIO_LOOKUP("GPIOM", 1,
 221                             "sck", GPIO_ACTIVE_HIGH),
 222                 GPIO_LOOKUP("GPIOM", 2,
 223                             "mosi", GPIO_ACTIVE_HIGH),
 224                 GPIO_LOOKUP("GPIOM", 3,
 225                             "miso", GPIO_ACTIVE_HIGH),
 226                 GPIO_LOOKUP("GPIOM", 0,
 227                             "cs", GPIO_ACTIVE_HIGH),
 228                 { },
 229         },
 230 };
 231
 232 static void smartq_lcd_power_set(struct plat_lcd_data *pd, unsigned int power)
 233 {
 234         gpio_direction_output(S3C64XX_GPM(3), power);
 235 }
 236
 237 static struct plat_lcd_data smartq_lcd_power_data = {
 238         .set_power      = smartq_lcd_power_set,
 239 };
 240
 241 static struct platform_device smartq_lcd_power_device = {
 242         .name                   = "platform-lcd",
 243         .dev.parent             = &s3c_device_fb.dev,
 244         .dev.platform_data      = &smartq_lcd_power_data,
 245 };
 246
 247 static struct i2c_board_info smartq_i2c_devs[] __initdata = {
 248         { I2C_BOARD_INFO("wm8987", 0x1a), },
 249 };
 250
 251 static struct platform_device *smartq_devices[] __initdata = {
 252         &s3c_device_hsmmc1,     /* Init iNAND first, ... */
 253         &s3c_device_hsmmc0,     /* ... then the external SD card */
 254         &s3c_device_hsmmc2,
 255         &s3c_device_adc,
 256         &s3c_device_fb,
 257         &s3c_device_hwmon,
 258         &s3c_device_i2c0,
 259         &s3c_device_ohci,
 260         &s3c_device_rtc,
 261         &samsung_device_pwm,
 262         &s3c_device_usb_hsotg,
 263         &s3c64xx_device_iis0,
 264         &smartq_backlight_device,
 265         &smartq_lcd_control_device,
 266         &smartq_lcd_power_device,
 267         &smartq_usb_otg_vbus_dev,
 268 };
 269
 270 static void __init smartq_lcd_mode_set(void)
 271 {
 272         u32 tmp;
 273
 274         /* set the LCD type */
 275         tmp = __raw_readl(S3C64XX_SPCON);
 276         tmp &= ~S3C64XX_SPCON_LCD_SEL_MASK;
 277         tmp |= S3C64XX_SPCON_LCD_SEL_RGB;
 278         __raw_writel(tmp, S3C64XX_SPCON);
 279
 280         /* remove the LCD bypass */
 281         tmp = __raw_readl(S3C64XX_MODEM_MIFPCON);
 282         tmp &= ~MIFPCON_LCD_BYPASS;
 283         __raw_writel(tmp, S3C64XX_MODEM_MIFPCON);
 284 }
 285
 286 static void smartq_power_off(void)
 287 {
 288         gpio_direction_output(S3C64XX_GPK(15), 1);
 289 }
 290
 291 static int __init smartq_power_off_init(void)
 292 {
 293         int ret;
 294
 295         ret = gpio_request(S3C64XX_GPK(15), "Power control");
 296         if (ret < 0) {
 297                 pr_err("%s: failed to get GPK15\n", __func__);
 298                 return ret;
 299         }
 300
 301         /* leave power on */
 302         gpio_direction_output(S3C64XX_GPK(15), 0);
 303
 304         pm_power_off = smartq_power_off;
 305
 306         return ret;
 307 }
 308
 309 static int __init smartq_usb_host_init(void)
 310 {
 311         int ret;
 312
 313         ret = gpio_request(S3C64XX_GPL(0), "USB power control");
 314         if (ret < 0) {
 315                 pr_err("%s: failed to get GPL0\n", __func__);
 316                 return ret;
 317         }
 318
 319         ret = gpio_request(S3C64XX_GPL(1), "USB host power control");
 320         if (ret < 0) {
 321                 pr_err("%s: failed to get GPL1\n", __func__);
 322                 goto err;
 323         }
 324
 325         if (!machine_is_smartq5()) {
 326                 /* This isn't present on a SmartQ 5 board */
 327                 ret = gpio_request(S3C64XX_GPL(10), "USB host overcurrent");
 328                 if (ret < 0) {
 329                         pr_err("%s: failed to get GPL10\n", __func__);
 330                         goto err2;
 331                 }
 332         }
 333
 334         /* turn power off */
 335         gpio_direction_output(S3C64XX_GPL(0), 0);
 336         gpio_direction_output(S3C64XX_GPL(1), 0);
 337         if (!machine_is_smartq5())
 338                 gpio_direction_input(S3C64XX_GPL(10));
 339
 340         s3c_device_ohci.dev.platform_data = &smartq_usb_host_info;
 341
 342         return 0;
 343
 344 err2:
 345         gpio_free(S3C64XX_GPL(1));
 346 err:
 347         gpio_free(S3C64XX_GPL(0));
 348         return ret;
 349 }
 350
 351 static int __init smartq_wifi_init(void)
 352 {
 353         int ret;
 354
 355         ret = gpio_request(S3C64XX_GPK(1), "wifi control");
 356         if (ret < 0) {
 357                 pr_err("%s: failed to get GPK1\n", __func__);
 358                 return ret;
 359         }
 360
 361         ret = gpio_request(S3C64XX_GPK(2), "wifi reset");
 362         if (ret < 0) {
 363                 pr_err("%s: failed to get GPK2\n", __func__);
 364                 gpio_free(S3C64XX_GPK(1));
 365                 return ret;
 366         }
 367
 368         /* turn power on */
 369         gpio_direction_output(S3C64XX_GPK(1), 1);
 370
 371         /* reset device */
 372         gpio_direction_output(S3C64XX_GPK(2), 0);
 373         mdelay(100);
 374         gpio_set_value(S3C64XX_GPK(2), 1);
 375         gpio_direction_input(S3C64XX_GPK(2));
 376
 377         return 0;
 378 }
 379
 380 static struct map_desc smartq_iodesc[] __initdata = {};
 381 void __init smartq_map_io(void)
 382 {
 383         s3c64xx_init_io(smartq_iodesc, ARRAY_SIZE(smartq_iodesc));
 384         s3c64xx_set_xtal_freq(12000000);
 385         s3c64xx_set_xusbxti_freq(12000000);
 386         s3c24xx_init_uarts(smartq_uartcfgs, ARRAY_SIZE(smartq_uartcfgs));
 387         samsung_set_timer_source(SAMSUNG_PWM3, SAMSUNG_PWM4);
 388
 389         smartq_lcd_mode_set();
 390 }
 391
 392 static struct gpiod_lookup_table smartq_audio_gpios = {
 393         .dev_id = "smartq-audio",
 394         .table = {
 395                 GPIO_LOOKUP("GPL", 12, "headphone detect", 0),
 396                 GPIO_LOOKUP("GPK", 12, "amplifiers shutdown", 0),
 397                 { },
 398         },
 399 };
 400
 401 void __init smartq_machine_init(void)
 402 {
 403         s3c_i2c0_set_platdata(NULL);
 404         dwc2_hsotg_set_platdata(&smartq_hsotg_pdata);
 405         s3c_hwmon_set_platdata(&smartq_hwmon_pdata);
 406         s3c_sdhci1_set_platdata(&smartq_internal_hsmmc_pdata);
 407         s3c_sdhci2_set_platdata(&smartq_internal_hsmmc_pdata);
 408         s3c64xx_ts_set_platdata(&smartq_touchscreen_pdata);
 409
 410         i2c_register_board_info(0, smartq_i2c_devs,
 411                                 ARRAY_SIZE(smartq_i2c_devs));
 412
 413         WARN_ON(smartq_lcd_setup_gpio());
 414         WARN_ON(smartq_power_off_init());
 415         WARN_ON(smartq_usb_host_init());
 416         WARN_ON(smartq_wifi_init());
 417
 418         pwm_add_table(smartq_pwm_lookup, ARRAY_SIZE(smartq_pwm_lookup));
 419         gpiod_add_lookup_table(&smartq_lcd_control_gpiod_table);
 420         gpiod_add_lookup_table(&smartq_usb_otg_vbus_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 }