linux/arch/arm/mach-s3c64xx/mach-smartq.c
Joonyoung Shim 99f6e1f50c ARM: S3C64XX: Add usb otg phy control
This patch supports to control usb otg phy of S3C64XX. Currently, the
driver for usb otg controls usb otg phy but it can be removed by this
patch.

Signed-off-by: Joonyoung Shim <jy0922.shim@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
[Rebased on the newest git/kgene/linux-samsung #for-next]
Signed-off-by: Lukasz Majewski <l.majewski@samsung.com>
Acked-by: Mark Brown<broonie@opensource.wolfsonmicro.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
2012-03-09 07:31:30 -08:00

405 lines
8.9 KiB
C

/*
* 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/spi/spi_gpio.h>
#include <linux/usb/gpio_vbus.h>
#include <asm/mach-types.h>
#include <asm/mach/map.h>
#include <mach/map.h>
#include <mach/regs-gpio.h>
#include <mach/regs-modem.h>
#include <plat/clock.h>
#include <plat/cpu.h>
#include <plat/devs.h>
#include <plat/iic.h>
#include <plat/gpio-cfg.h>
#include <plat/hwmon.h>
#include <plat/regs-serial.h>
#include <plat/udc-hs.h>
#include <plat/usb-control.h>
#include <plat/sdhci.h>
#include <plat/ts.h>
#include <video/platform_lcd.h>
#include "common.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_DISABLED |
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),
.init = smartq_bl_init,
};
static struct platform_device smartq_backlight_device = {
.name = "pwm-backlight",
.dev = {
.parent = &s3c_device_timer[1].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,
&s3c_device_timer[1],
&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_usb_otg_init(void)
{
clk_xusbxti.rate = 12000000;
return 0;
}
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));
s3c24xx_init_clocks(12000000);
s3c24xx_init_uarts(smartq_uartcfgs, ARRAY_SIZE(smartq_uartcfgs));
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_usb_otg_init());
WARN_ON(smartq_wifi_init());
platform_add_devices(smartq_devices, ARRAY_SIZE(smartq_devices));
}