Maurus Cuelenaere | a2f7bff | 2010-05-20 11:35:50 +0200 | [diff] [blame] | 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/init.h> |
| 16 | #include <linux/platform_device.h> |
| 17 | #include <linux/pwm_backlight.h> |
| 18 | #include <linux/serial_core.h> |
| 19 | #include <linux/usb/gpio_vbus.h> |
| 20 | |
| 21 | #include <asm/mach-types.h> |
| 22 | #include <asm/mach/map.h> |
| 23 | |
| 24 | #include <mach/map.h> |
| 25 | #include <mach/regs-gpio.h> |
| 26 | #include <mach/regs-modem.h> |
| 27 | |
| 28 | #include <plat/clock.h> |
| 29 | #include <plat/cpu.h> |
| 30 | #include <plat/devs.h> |
| 31 | #include <plat/iic.h> |
| 32 | #include <plat/gpio-cfg.h> |
| 33 | #include <plat/hwmon.h> |
| 34 | #include <plat/regs-serial.h> |
| 35 | #include <plat/udc-hs.h> |
| 36 | #include <plat/usb-control.h> |
| 37 | #include <plat/sdhci.h> |
| 38 | #include <plat/ts.h> |
| 39 | |
| 40 | #include <video/platform_lcd.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, IRQF_DISABLED | |
| 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 int __init smartq_bl_init(struct device *dev) |
| 139 | { |
| 140 | s3c_gpio_cfgpin(S3C64XX_GPF(15), S3C_GPIO_SFN(2)); |
| 141 | |
| 142 | return 0; |
| 143 | } |
| 144 | |
| 145 | static struct platform_pwm_backlight_data smartq_backlight_data = { |
| 146 | .pwm_id = 1, |
| 147 | .max_brightness = 1000, |
| 148 | .dft_brightness = 600, |
| 149 | .pwm_period_ns = 1000000000 / (1000 * 20), |
| 150 | .init = smartq_bl_init, |
| 151 | }; |
| 152 | |
| 153 | static struct platform_device smartq_backlight_device = { |
| 154 | .name = "pwm-backlight", |
| 155 | .dev = { |
| 156 | .parent = &s3c_device_timer[1].dev, |
| 157 | .platform_data = &smartq_backlight_data, |
| 158 | }, |
| 159 | }; |
| 160 | |
| 161 | static struct s3c2410_ts_mach_info smartq_touchscreen_pdata __initdata = { |
| 162 | .delay = 65535, |
| 163 | .presc = 99, |
| 164 | .oversampling_shift = 4, |
| 165 | }; |
| 166 | |
| 167 | static struct s3c_sdhci_platdata smartq_internal_hsmmc_pdata = { |
| 168 | .max_width = 4, |
| 169 | /*.broken_card_detection = true,*/ |
| 170 | }; |
| 171 | |
| 172 | static struct s3c_hwmon_pdata smartq_hwmon_pdata __initdata = { |
| 173 | /* Battery voltage (?-4.2V) */ |
| 174 | .in[0] = &(struct s3c_hwmon_chcfg) { |
| 175 | .name = "smartq:battery-voltage", |
| 176 | .mult = 3300, |
| 177 | .div = 2048, |
| 178 | }, |
| 179 | /* Reference voltage (1.2V) */ |
| 180 | .in[1] = &(struct s3c_hwmon_chcfg) { |
| 181 | .name = "smartq:reference-voltage", |
| 182 | .mult = 3300, |
| 183 | .div = 4096, |
| 184 | }, |
| 185 | }; |
| 186 | |
| 187 | static void smartq_lcd_power_set(struct plat_lcd_data *pd, unsigned int power) |
| 188 | { |
| 189 | gpio_direction_output(S3C64XX_GPM(3), power); |
| 190 | } |
| 191 | |
| 192 | static struct plat_lcd_data smartq_lcd_power_data = { |
| 193 | .set_power = smartq_lcd_power_set, |
| 194 | }; |
| 195 | |
| 196 | static struct platform_device smartq_lcd_power_device = { |
| 197 | .name = "platform-lcd", |
| 198 | .dev.parent = &s3c_device_fb.dev, |
| 199 | .dev.platform_data = &smartq_lcd_power_data, |
| 200 | }; |
| 201 | |
| 202 | |
| 203 | static struct platform_device *smartq_devices[] __initdata = { |
| 204 | &s3c_device_hsmmc1, /* Init iNAND first, ... */ |
| 205 | &s3c_device_hsmmc0, /* ... then the external SD card */ |
| 206 | &s3c_device_hsmmc2, |
| 207 | &s3c_device_adc, |
| 208 | &s3c_device_fb, |
| 209 | &s3c_device_hwmon, |
| 210 | &s3c_device_i2c0, |
| 211 | &s3c_device_ohci, |
| 212 | &s3c_device_rtc, |
| 213 | &s3c_device_timer[1], |
| 214 | &s3c_device_ts, |
| 215 | &s3c_device_usb_hsotg, |
| 216 | &smartq_backlight_device, |
| 217 | &smartq_lcd_power_device, |
| 218 | &smartq_usb_otg_vbus_dev, |
| 219 | }; |
| 220 | |
| 221 | static void __init smartq_lcd_mode_set(void) |
| 222 | { |
| 223 | u32 tmp; |
| 224 | |
| 225 | /* set the LCD type */ |
| 226 | tmp = __raw_readl(S3C64XX_SPCON); |
| 227 | tmp &= ~S3C64XX_SPCON_LCD_SEL_MASK; |
| 228 | tmp |= S3C64XX_SPCON_LCD_SEL_RGB; |
| 229 | __raw_writel(tmp, S3C64XX_SPCON); |
| 230 | |
| 231 | /* remove the LCD bypass */ |
| 232 | tmp = __raw_readl(S3C64XX_MODEM_MIFPCON); |
| 233 | tmp &= ~MIFPCON_LCD_BYPASS; |
| 234 | __raw_writel(tmp, S3C64XX_MODEM_MIFPCON); |
| 235 | } |
| 236 | |
| 237 | static void smartq_power_off(void) |
| 238 | { |
| 239 | gpio_direction_output(S3C64XX_GPK(15), 1); |
| 240 | } |
| 241 | |
| 242 | static int __init smartq_power_off_init(void) |
| 243 | { |
| 244 | int ret; |
| 245 | |
| 246 | ret = gpio_request(S3C64XX_GPK(15), "Power control"); |
| 247 | if (ret < 0) { |
| 248 | pr_err("%s: failed to get GPK15\n", __func__); |
| 249 | return ret; |
| 250 | } |
| 251 | |
| 252 | /* leave power on */ |
| 253 | gpio_direction_output(S3C64XX_GPK(15), 0); |
| 254 | |
| 255 | |
| 256 | pm_power_off = smartq_power_off; |
| 257 | |
| 258 | return ret; |
| 259 | } |
| 260 | |
| 261 | static int __init smartq_usb_host_init(void) |
| 262 | { |
| 263 | int ret; |
| 264 | |
| 265 | ret = gpio_request(S3C64XX_GPL(0), "USB power control"); |
| 266 | if (ret < 0) { |
| 267 | pr_err("%s: failed to get GPL0\n", __func__); |
| 268 | return ret; |
| 269 | } |
| 270 | |
| 271 | ret = gpio_request(S3C64XX_GPL(1), "USB host power control"); |
| 272 | if (ret < 0) { |
| 273 | pr_err("%s: failed to get GPL1\n", __func__); |
| 274 | goto err; |
| 275 | } |
| 276 | |
| 277 | if (!machine_is_smartq5()) { |
| 278 | /* This isn't present on a SmartQ 5 board */ |
| 279 | ret = gpio_request(S3C64XX_GPL(10), "USB host overcurrent"); |
| 280 | if (ret < 0) { |
| 281 | pr_err("%s: failed to get GPL10\n", __func__); |
| 282 | goto err2; |
| 283 | } |
| 284 | } |
| 285 | |
| 286 | /* turn power off */ |
| 287 | gpio_direction_output(S3C64XX_GPL(0), 0); |
| 288 | gpio_direction_output(S3C64XX_GPL(1), 0); |
| 289 | if (!machine_is_smartq5()) |
| 290 | gpio_direction_input(S3C64XX_GPL(10)); |
| 291 | |
| 292 | s3c_device_ohci.dev.platform_data = &smartq_usb_host_info; |
| 293 | |
| 294 | return 0; |
| 295 | |
| 296 | err2: |
| 297 | gpio_free(S3C64XX_GPL(1)); |
| 298 | err: |
| 299 | gpio_free(S3C64XX_GPL(0)); |
| 300 | return ret; |
| 301 | } |
| 302 | |
| 303 | static int __init smartq_usb_otg_init(void) |
| 304 | { |
| 305 | clk_xusbxti.rate = 12000000; |
| 306 | |
| 307 | return 0; |
| 308 | } |
| 309 | |
| 310 | static int __init smartq_wifi_init(void) |
| 311 | { |
| 312 | int ret; |
| 313 | |
| 314 | ret = gpio_request(S3C64XX_GPK(1), "wifi control"); |
| 315 | if (ret < 0) { |
| 316 | pr_err("%s: failed to get GPK1\n", __func__); |
| 317 | return ret; |
| 318 | } |
| 319 | |
| 320 | ret = gpio_request(S3C64XX_GPK(2), "wifi reset"); |
| 321 | if (ret < 0) { |
| 322 | pr_err("%s: failed to get GPK2\n", __func__); |
| 323 | gpio_free(S3C64XX_GPK(1)); |
| 324 | return ret; |
| 325 | } |
| 326 | |
| 327 | /* turn power on */ |
| 328 | gpio_direction_output(S3C64XX_GPK(1), 1); |
| 329 | |
| 330 | /* reset device */ |
| 331 | gpio_direction_output(S3C64XX_GPK(2), 0); |
| 332 | mdelay(100); |
| 333 | gpio_set_value(S3C64XX_GPK(2), 1); |
| 334 | gpio_direction_input(S3C64XX_GPK(2)); |
| 335 | |
| 336 | return 0; |
| 337 | } |
| 338 | |
| 339 | static struct map_desc smartq_iodesc[] __initdata = {}; |
| 340 | void __init smartq_map_io(void) |
| 341 | { |
| 342 | s3c64xx_init_io(smartq_iodesc, ARRAY_SIZE(smartq_iodesc)); |
| 343 | s3c24xx_init_clocks(12000000); |
| 344 | s3c24xx_init_uarts(smartq_uartcfgs, ARRAY_SIZE(smartq_uartcfgs)); |
| 345 | |
| 346 | smartq_lcd_mode_set(); |
| 347 | } |
| 348 | |
| 349 | void __init smartq_machine_init(void) |
| 350 | { |
| 351 | s3c_i2c0_set_platdata(NULL); |
| 352 | s3c_hwmon_set_platdata(&smartq_hwmon_pdata); |
| 353 | s3c_sdhci1_set_platdata(&smartq_internal_hsmmc_pdata); |
| 354 | s3c_sdhci2_set_platdata(&smartq_internal_hsmmc_pdata); |
| 355 | s3c24xx_ts_set_platdata(&smartq_touchscreen_pdata); |
| 356 | |
| 357 | WARN_ON(smartq_power_off_init()); |
| 358 | WARN_ON(smartq_usb_host_init()); |
| 359 | WARN_ON(smartq_usb_otg_init()); |
| 360 | WARN_ON(smartq_wifi_init()); |
| 361 | |
| 362 | platform_add_devices(smartq_devices, ARRAY_SIZE(smartq_devices)); |
| 363 | } |