From 99f6e1f50cbb048325c966f2d0e7fe3e47010905 Mon Sep 17 00:00:00 2001 From: Joonyoung Shim Date: Wed, 7 Mar 2012 04:23:47 -0800 Subject: 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 Signed-off-by: Kyungmin Park [Rebased on the newest git/kgene/linux-samsung #for-next] Signed-off-by: Lukasz Majewski Acked-by: Mark Brown Signed-off-by: Kukjin Kim --- arch/arm/mach-s3c64xx/Kconfig | 8 ++++ arch/arm/mach-s3c64xx/Makefile | 1 + arch/arm/mach-s3c64xx/mach-crag6410.c | 4 ++ arch/arm/mach-s3c64xx/mach-smartq.c | 3 ++ arch/arm/mach-s3c64xx/mach-smdk6410.c | 4 ++ arch/arm/mach-s3c64xx/setup-usb-phy.c | 90 +++++++++++++++++++++++++++++++++++ 6 files changed, 110 insertions(+) create mode 100644 arch/arm/mach-s3c64xx/setup-usb-phy.c (limited to 'arch/arm/mach-s3c64xx') diff --git a/arch/arm/mach-s3c64xx/Kconfig b/arch/arm/mach-s3c64xx/Kconfig index dd20c66..326ea3a 100644 --- a/arch/arm/mach-s3c64xx/Kconfig +++ b/arch/arm/mach-s3c64xx/Kconfig @@ -83,6 +83,11 @@ config S3C64XX_SETUP_SPI help Common setup code for SPI GPIO configurations +config S3C64XX_SETUP_USB_PHY + bool + help + Common setup code for USB PHY controller + # S36400 Macchine support config MACH_SMDK6400 @@ -157,6 +162,7 @@ config MACH_SMDK6410 select S3C64XX_SETUP_IDE select S3C64XX_SETUP_FB_24BPP select S3C64XX_SETUP_KEYPAD + select S3C64XX_SETUP_USB_PHY help Machine support for the Samsung SMDK6410 @@ -256,6 +262,7 @@ config MACH_SMARTQ select S3C_DEV_USB_HOST select S3C64XX_SETUP_SDHCI select S3C64XX_SETUP_FB_24BPP + select S3C64XX_SETUP_USB_PHY select SAMSUNG_DEV_ADC select SAMSUNG_DEV_PWM select SAMSUNG_DEV_TS @@ -283,6 +290,7 @@ config MACH_WLF_CRAGG_6410 select S3C64XX_SETUP_FB_24BPP select S3C64XX_SETUP_KEYPAD select S3C64XX_SETUP_SPI + select S3C64XX_SETUP_USB_PHY select SAMSUNG_DEV_ADC select SAMSUNG_DEV_KEYPAD select S3C_DEV_USB_HOST diff --git a/arch/arm/mach-s3c64xx/Makefile b/arch/arm/mach-s3c64xx/Makefile index 610fe28..f9ce1dc 100644 --- a/arch/arm/mach-s3c64xx/Makefile +++ b/arch/arm/mach-s3c64xx/Makefile @@ -43,6 +43,7 @@ obj-$(CONFIG_S3C64XX_SETUP_IDE) += setup-ide.o obj-$(CONFIG_S3C64XX_SETUP_KEYPAD) += setup-keypad.o obj-$(CONFIG_S3C64XX_SETUP_SDHCI_GPIO) += setup-sdhci-gpio.o obj-$(CONFIG_S3C64XX_SETUP_SPI) += setup-spi.o +obj-$(CONFIG_S3C64XX_SETUP_USB_PHY) += setup-usb-phy.o # Machine support diff --git a/arch/arm/mach-s3c64xx/mach-crag6410.c b/arch/arm/mach-s3c64xx/mach-crag6410.c index 8077f65..3b56bd9 100644 --- a/arch/arm/mach-s3c64xx/mach-crag6410.c +++ b/arch/arm/mach-s3c64xx/mach-crag6410.c @@ -59,6 +59,7 @@ #include #include #include +#include #include #include @@ -698,6 +699,8 @@ static struct s3c_sdhci_platdata crag6410_hsmmc0_pdata = { .cfg_gpio = crag6410_cfg_sdhci0, }; +static struct s3c_hsotg_plat crag6410_hsotg_pdata; + static void __init crag6410_machine_init(void) { /* Open drain IRQs need pullups */ @@ -722,6 +725,7 @@ static void __init crag6410_machine_init(void) s3c_i2c0_set_platdata(&i2c0_pdata); s3c_i2c1_set_platdata(&i2c1_pdata); s3c_fb_set_platdata(&crag6410_lcd_pdata); + s3c_hsotg_set_platdata(&crag6410_hsotg_pdata); i2c_register_board_info(0, i2c_devs0, ARRAY_SIZE(i2c_devs0)); i2c_register_board_info(1, i2c_devs1, ARRAY_SIZE(i2c_devs1)); diff --git a/arch/arm/mach-s3c64xx/mach-smartq.c b/arch/arm/mach-s3c64xx/mach-smartq.c index ce31db1..ce745e1 100644 --- a/arch/arm/mach-s3c64xx/mach-smartq.c +++ b/arch/arm/mach-s3c64xx/mach-smartq.c @@ -187,6 +187,8 @@ static struct s3c_hwmon_pdata smartq_hwmon_pdata __initdata = { }, }; +static struct s3c_hsotg_plat smartq_hsotg_pdata; + static int __init smartq_lcd_setup_gpio(void) { int ret; @@ -383,6 +385,7 @@ void __init smartq_map_io(void) 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); diff --git a/arch/arm/mach-s3c64xx/mach-smdk6410.c b/arch/arm/mach-s3c64xx/mach-smdk6410.c index ca6fc20..d55bc96 100644 --- a/arch/arm/mach-s3c64xx/mach-smdk6410.c +++ b/arch/arm/mach-s3c64xx/mach-smdk6410.c @@ -72,6 +72,7 @@ #include #include #include +#include #include "common.h" @@ -631,6 +632,8 @@ static struct platform_pwm_backlight_data smdk6410_bl_data = { .pwm_id = 1, }; +static struct s3c_hsotg_plat smdk6410_hsotg_pdata; + static void __init smdk6410_map_io(void) { u32 tmp; @@ -659,6 +662,7 @@ static void __init smdk6410_machine_init(void) s3c_i2c0_set_platdata(NULL); s3c_i2c1_set_platdata(NULL); s3c_fb_set_platdata(&smdk6410_lcd_pdata); + s3c_hsotg_set_platdata(&smdk6410_hsotg_pdata); samsung_keypad_set_platdata(&smdk6410_keypad_data); diff --git a/arch/arm/mach-s3c64xx/setup-usb-phy.c b/arch/arm/mach-s3c64xx/setup-usb-phy.c new file mode 100644 index 0000000..f6757e0 --- /dev/null +++ b/arch/arm/mach-s3c64xx/setup-usb-phy.c @@ -0,0 +1,90 @@ +/* + * Copyright (C) 2011 Samsung Electronics Co.Ltd + * Author: Joonyoung Shim + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. + * + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +static int s3c_usb_otgphy_init(struct platform_device *pdev) +{ + struct clk *xusbxti; + u32 phyclk; + + writel(readl(S3C64XX_OTHERS) | S3C64XX_OTHERS_USBMASK, S3C64XX_OTHERS); + + /* set clock frequency for PLL */ + phyclk = readl(S3C_PHYCLK) & ~S3C_PHYCLK_CLKSEL_MASK; + + xusbxti = clk_get(&pdev->dev, "xusbxti"); + if (xusbxti && !IS_ERR(xusbxti)) { + switch (clk_get_rate(xusbxti)) { + case 12 * MHZ: + phyclk |= S3C_PHYCLK_CLKSEL_12M; + break; + case 24 * MHZ: + phyclk |= S3C_PHYCLK_CLKSEL_24M; + break; + default: + case 48 * MHZ: + /* default reference clock */ + break; + } + clk_put(xusbxti); + } + + /* TODO: select external clock/oscillator */ + writel(phyclk | S3C_PHYCLK_CLK_FORCE, S3C_PHYCLK); + + /* set to normal OTG PHY */ + writel((readl(S3C_PHYPWR) & ~S3C_PHYPWR_NORMAL_MASK), S3C_PHYPWR); + mdelay(1); + + /* reset OTG PHY and Link */ + writel(S3C_RSTCON_PHY | S3C_RSTCON_HCLK | S3C_RSTCON_PHYCLK, + S3C_RSTCON); + udelay(20); /* at-least 10uS */ + writel(0, S3C_RSTCON); + + return 0; +} + +static int s3c_usb_otgphy_exit(struct platform_device *pdev) +{ + writel((readl(S3C_PHYPWR) | S3C_PHYPWR_ANALOG_POWERDOWN | + S3C_PHYPWR_OTG_DISABLE), S3C_PHYPWR); + + writel(readl(S3C64XX_OTHERS) & ~S3C64XX_OTHERS_USBMASK, S3C64XX_OTHERS); + + return 0; +} + +int s5p_usb_phy_init(struct platform_device *pdev, int type) +{ + if (type == S5P_USB_PHY_DEVICE) + return s3c_usb_otgphy_init(pdev); + + return -EINVAL; +} + +int s5p_usb_phy_exit(struct platform_device *pdev, int type) +{ + if (type == S5P_USB_PHY_DEVICE) + return s3c_usb_otgphy_exit(pdev); + + return -EINVAL; +} -- cgit v1.1