diff options
Diffstat (limited to 'kernel/arch/arm/mach-s3c64xx/mach-smartq.c')
| -rw-r--r-- | kernel/arch/arm/mach-s3c64xx/mach-smartq.c | 400 |
1 files changed, 400 insertions, 0 deletions
diff --git a/kernel/arch/arm/mach-s3c64xx/mach-smartq.c b/kernel/arch/arm/mach-s3c64xx/mach-smartq.c new file mode 100644 index 000000000..b3d13537a --- /dev/null +++ b/kernel/arch/arm/mach-s3c64xx/mach-smartq.c @@ -0,0 +1,400 @@ +/* + * linux/arch/arm/mach-s3c64xx/mach-smartq.c + * + * Copyright (C) 2010 Maurus Cuelenaere + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + */ + +#include <linux/delay.h> +#include <linux/fb.h> +#include <linux/gpio.h> +#include <linux/init.h> +#include <linux/platform_device.h> +#include <linux/pwm_backlight.h> +#include <linux/serial_core.h> +#include <linux/serial_s3c.h> +#include <linux/spi/spi_gpio.h> +#include <linux/usb/gpio_vbus.h> +#include <linux/platform_data/s3c-hsotg.h> + +#include <asm/mach-types.h> +#include <asm/mach/map.h> + +#include <mach/map.h> +#include <mach/regs-gpio.h> +#include <mach/gpio-samsung.h> + +#include <plat/cpu.h> +#include <plat/devs.h> +#include <linux/platform_data/i2c-s3c2410.h> +#include <plat/gpio-cfg.h> +#include <linux/platform_data/hwmon-s3c.h> +#include <linux/platform_data/usb-ohci-s3c2410.h> +#include <plat/sdhci.h> +#include <linux/platform_data/touchscreen-s3c2410.h> + +#include <video/platform_lcd.h> +#include <plat/samsung-time.h> + +#include "common.h" +#include "regs-modem.h" + +#define UCON S3C2410_UCON_DEFAULT +#define ULCON (S3C2410_LCON_CS8 | S3C2410_LCON_PNONE) +#define UFCON (S3C2410_UFCON_RXTRIG8 | S3C2410_UFCON_FIFOMODE) + +static struct s3c2410_uartcfg smartq_uartcfgs[] __initdata = { + [0] = { + .hwport = 0, + .flags = 0, + .ucon = UCON, + .ulcon = ULCON, + .ufcon = UFCON, + }, + [1] = { + .hwport = 1, + .flags = 0, + .ucon = UCON, + .ulcon = ULCON, + .ufcon = UFCON, + }, + [2] = { + .hwport = 2, + .flags = 0, + .ucon = UCON, + .ulcon = ULCON, + .ufcon = UFCON, + }, +}; + +static void smartq_usb_host_powercontrol(int port, int to) +{ + pr_debug("%s(%d, %d)\n", __func__, port, to); + + if (port == 0) { + gpio_set_value(S3C64XX_GPL(0), to); + gpio_set_value(S3C64XX_GPL(1), to); + } +} + +static irqreturn_t smartq_usb_host_ocirq(int irq, void *pw) +{ + struct s3c2410_hcd_info *info = pw; + + if (gpio_get_value(S3C64XX_GPL(10)) == 0) { + pr_debug("%s: over-current irq (oc detected)\n", __func__); + s3c2410_usb_report_oc(info, 3); + } else { + pr_debug("%s: over-current irq (oc cleared)\n", __func__); + s3c2410_usb_report_oc(info, 0); + } + + return IRQ_HANDLED; +} + +static void smartq_usb_host_enableoc(struct s3c2410_hcd_info *info, int on) +{ + int ret; + + /* This isn't present on a SmartQ 5 board */ + if (machine_is_smartq5()) + return; + + if (on) { + ret = request_irq(gpio_to_irq(S3C64XX_GPL(10)), + smartq_usb_host_ocirq, + IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING, + "USB host overcurrent", info); + if (ret != 0) + pr_err("failed to request usb oc irq: %d\n", ret); + } else { + free_irq(gpio_to_irq(S3C64XX_GPL(10)), info); + } +} + +static struct s3c2410_hcd_info smartq_usb_host_info = { + .port[0] = { + .flags = S3C_HCDFLG_USED + }, + .port[1] = { + .flags = 0 + }, + + .power_control = smartq_usb_host_powercontrol, + .enable_oc = smartq_usb_host_enableoc, +}; + +static struct gpio_vbus_mach_info smartq_usb_otg_vbus_pdata = { + .gpio_vbus = S3C64XX_GPL(9), + .gpio_pullup = -1, + .gpio_vbus_inverted = true, +}; + +static struct platform_device smartq_usb_otg_vbus_dev = { + .name = "gpio-vbus", + .dev.platform_data = &smartq_usb_otg_vbus_pdata, +}; + +static int smartq_bl_init(struct device *dev) +{ + s3c_gpio_cfgpin(S3C64XX_GPF(15), S3C_GPIO_SFN(2)); + + return 0; +} + +static struct platform_pwm_backlight_data smartq_backlight_data = { + .pwm_id = 1, + .max_brightness = 1000, + .dft_brightness = 600, + .pwm_period_ns = 1000000000 / (1000 * 20), + .enable_gpio = -1, + .init = smartq_bl_init, +}; + +static struct platform_device smartq_backlight_device = { + .name = "pwm-backlight", + .dev = { + .parent = &samsung_device_pwm.dev, + .platform_data = &smartq_backlight_data, + }, +}; + +static struct s3c2410_ts_mach_info smartq_touchscreen_pdata __initdata = { + .delay = 65535, + .presc = 99, + .oversampling_shift = 4, +}; + +static struct s3c_sdhci_platdata smartq_internal_hsmmc_pdata = { + .max_width = 4, + .cd_type = S3C_SDHCI_CD_PERMANENT, +}; + +static struct s3c_hwmon_pdata smartq_hwmon_pdata __initdata = { + /* Battery voltage (?-4.2V) */ + .in[0] = &(struct s3c_hwmon_chcfg) { + .name = "smartq:battery-voltage", + .mult = 3300, + .div = 2048, + }, + /* Reference voltage (1.2V) */ + .in[1] = &(struct s3c_hwmon_chcfg) { + .name = "smartq:reference-voltage", + .mult = 3300, + .div = 4096, + }, +}; + +static struct s3c_hsotg_plat smartq_hsotg_pdata; + +static int __init smartq_lcd_setup_gpio(void) +{ + int ret; + + ret = gpio_request(S3C64XX_GPM(3), "LCD power"); + if (ret < 0) + return ret; + + /* turn power off */ + gpio_direction_output(S3C64XX_GPM(3), 0); + + return 0; +} + +/* GPM0 -> CS */ +static struct spi_gpio_platform_data smartq_lcd_control = { + .sck = S3C64XX_GPM(1), + .mosi = S3C64XX_GPM(2), + .miso = S3C64XX_GPM(2), +}; + +static struct platform_device smartq_lcd_control_device = { + .name = "spi-gpio", + .id = 1, + .dev.platform_data = &smartq_lcd_control, +}; + +static void smartq_lcd_power_set(struct plat_lcd_data *pd, unsigned int power) +{ + gpio_direction_output(S3C64XX_GPM(3), power); +} + +static struct plat_lcd_data smartq_lcd_power_data = { + .set_power = smartq_lcd_power_set, +}; + +static struct platform_device smartq_lcd_power_device = { + .name = "platform-lcd", + .dev.parent = &s3c_device_fb.dev, + .dev.platform_data = &smartq_lcd_power_data, +}; + +static struct i2c_board_info smartq_i2c_devs[] __initdata = { + { I2C_BOARD_INFO("wm8987", 0x1a), }, +}; + +static struct platform_device *smartq_devices[] __initdata = { + &s3c_device_hsmmc1, /* Init iNAND first, ... */ + &s3c_device_hsmmc0, /* ... then the external SD card */ + &s3c_device_hsmmc2, + &s3c_device_adc, + &s3c_device_fb, + &s3c_device_hwmon, + &s3c_device_i2c0, + &s3c_device_ohci, + &s3c_device_rtc, + &samsung_device_pwm, + &s3c_device_ts, + &s3c_device_usb_hsotg, + &s3c64xx_device_iis0, + &smartq_backlight_device, + &smartq_lcd_control_device, + &smartq_lcd_power_device, + &smartq_usb_otg_vbus_dev, +}; + +static void __init smartq_lcd_mode_set(void) +{ + u32 tmp; + + /* set the LCD type */ + tmp = __raw_readl(S3C64XX_SPCON); + tmp &= ~S3C64XX_SPCON_LCD_SEL_MASK; + tmp |= S3C64XX_SPCON_LCD_SEL_RGB; + __raw_writel(tmp, S3C64XX_SPCON); + + /* remove the LCD bypass */ + tmp = __raw_readl(S3C64XX_MODEM_MIFPCON); + tmp &= ~MIFPCON_LCD_BYPASS; + __raw_writel(tmp, S3C64XX_MODEM_MIFPCON); +} + +static void smartq_power_off(void) +{ + gpio_direction_output(S3C64XX_GPK(15), 1); +} + +static int __init smartq_power_off_init(void) +{ + int ret; + + ret = gpio_request(S3C64XX_GPK(15), "Power control"); + if (ret < 0) { + pr_err("%s: failed to get GPK15\n", __func__); + return ret; + } + + /* leave power on */ + gpio_direction_output(S3C64XX_GPK(15), 0); + + pm_power_off = smartq_power_off; + + return ret; +} + +static int __init smartq_usb_host_init(void) +{ + int ret; + + ret = gpio_request(S3C64XX_GPL(0), "USB power control"); + if (ret < 0) { + pr_err("%s: failed to get GPL0\n", __func__); + return ret; + } + + ret = gpio_request(S3C64XX_GPL(1), "USB host power control"); + if (ret < 0) { + pr_err("%s: failed to get GPL1\n", __func__); + goto err; + } + + if (!machine_is_smartq5()) { + /* This isn't present on a SmartQ 5 board */ + ret = gpio_request(S3C64XX_GPL(10), "USB host overcurrent"); + if (ret < 0) { + pr_err("%s: failed to get GPL10\n", __func__); + goto err2; + } + } + + /* turn power off */ + gpio_direction_output(S3C64XX_GPL(0), 0); + gpio_direction_output(S3C64XX_GPL(1), 0); + if (!machine_is_smartq5()) + gpio_direction_input(S3C64XX_GPL(10)); + + s3c_device_ohci.dev.platform_data = &smartq_usb_host_info; + + return 0; + +err2: + gpio_free(S3C64XX_GPL(1)); +err: + gpio_free(S3C64XX_GPL(0)); + return ret; +} + +static int __init smartq_wifi_init(void) +{ + int ret; + + ret = gpio_request(S3C64XX_GPK(1), "wifi control"); + if (ret < 0) { + pr_err("%s: failed to get GPK1\n", __func__); + return ret; + } + + ret = gpio_request(S3C64XX_GPK(2), "wifi reset"); + if (ret < 0) { + pr_err("%s: failed to get GPK2\n", __func__); + gpio_free(S3C64XX_GPK(1)); + return ret; + } + + /* turn power on */ + gpio_direction_output(S3C64XX_GPK(1), 1); + + /* reset device */ + gpio_direction_output(S3C64XX_GPK(2), 0); + mdelay(100); + gpio_set_value(S3C64XX_GPK(2), 1); + gpio_direction_input(S3C64XX_GPK(2)); + + return 0; +} + +static struct map_desc smartq_iodesc[] __initdata = {}; +void __init smartq_map_io(void) +{ + s3c64xx_init_io(smartq_iodesc, ARRAY_SIZE(smartq_iodesc)); + s3c64xx_set_xtal_freq(12000000); + s3c64xx_set_xusbxti_freq(12000000); + s3c24xx_init_uarts(smartq_uartcfgs, ARRAY_SIZE(smartq_uartcfgs)); + samsung_set_timer_source(SAMSUNG_PWM3, SAMSUNG_PWM4); + + smartq_lcd_mode_set(); +} + +void __init smartq_machine_init(void) +{ + s3c_i2c0_set_platdata(NULL); + s3c_hsotg_set_platdata(&smartq_hsotg_pdata); + s3c_hwmon_set_platdata(&smartq_hwmon_pdata); + s3c_sdhci1_set_platdata(&smartq_internal_hsmmc_pdata); + s3c_sdhci2_set_platdata(&smartq_internal_hsmmc_pdata); + s3c24xx_ts_set_platdata(&smartq_touchscreen_pdata); + + i2c_register_board_info(0, smartq_i2c_devs, + ARRAY_SIZE(smartq_i2c_devs)); + + WARN_ON(smartq_lcd_setup_gpio()); + WARN_ON(smartq_power_off_init()); + WARN_ON(smartq_usb_host_init()); + WARN_ON(smartq_wifi_init()); + + platform_add_devices(smartq_devices, ARRAY_SIZE(smartq_devices)); +} |