[PATCH 2/4 v2] ARM: Exynos5250: Enabling samsung-usbphy driver
Jingoo Han
jg1.han at samsung.com
Mon Oct 22 16:03:08 EST 2012
On Wednesday, October 10, 2012 7:43 PM Vivek Gautam wrote
>
> Adding usbphy node for Exynos5250 along with the platform data.
>
> Signed-off-by: Vivek Gautam <gautam.vivek at samsung.com>
> ---
> .../devicetree/bindings/usb/samsung-usbphy.txt | 12 +++++-
> arch/arm/boot/dts/exynos5250.dtsi | 5 ++
> arch/arm/mach-exynos/Kconfig | 1 +
> arch/arm/mach-exynos/include/mach/map.h | 1 +
> arch/arm/mach-exynos/mach-exynos5-dt.c | 10 +++++
> arch/arm/mach-exynos/setup-usb-phy.c | 43 ++++++++++++++++---
> arch/arm/plat-samsung/include/plat/usb-phy.h | 1 +
> include/linux/platform_data/samsung-usbphy.h | 1 +
> 8 files changed, 65 insertions(+), 9 deletions(-)
>
> diff --git a/Documentation/devicetree/bindings/usb/samsung-usbphy.txt
> b/Documentation/devicetree/bindings/usb/samsung-usbphy.txt
> index 7d54d59..c644d01 100644
> --- a/Documentation/devicetree/bindings/usb/samsung-usbphy.txt
> +++ b/Documentation/devicetree/bindings/usb/samsung-usbphy.txt
> @@ -1,11 +1,19 @@
> * Samsung's usb phy transceiver
>
> -The Samsung's phy transceiver is used for controlling usb otg phy for
> -s3c-hsotg usb device controller.
> +The Samsung's phy transceiver is used for controlling usb phy for
> +s3c-hsotg as well as ehci-s5p and ohci-exynos usb controllers
> +across Samsung SOCs.
> TODO: Adding the PHY binding with controller(s) according to the under
> developement generic PHY driver.
>
> +Exynos4210:
> Required properties:
> - compatible : should be "samsung,exynos4210-usbphy"
> - reg : base physical address of the phy registers and length of memory mapped
> region.
> +
> +Exynos5250:
> +Required properties:
> +- compatible : should be "samsung,exynos5250-usbphy"
> +- reg : base physical address of the phy registers and length of memory mapped
> + region.
> diff --git a/arch/arm/boot/dts/exynos5250.dtsi b/arch/arm/boot/dts/exynos5250.dtsi
> index dddfd6e..82bf042 100644
> --- a/arch/arm/boot/dts/exynos5250.dtsi
> +++ b/arch/arm/boot/dts/exynos5250.dtsi
> @@ -218,6 +218,11 @@
> #size-cells = <0>;
> };
>
> + usbphy {
> + compatible = "samsung,exynos5250-usbphy";
> + reg = <0x12130000 0x100>;
> + };
> +
> amba {
> #address-cells = <1>;
> #size-cells = <1>;
> diff --git a/arch/arm/mach-exynos/Kconfig b/arch/arm/mach-exynos/Kconfig
> index 4372075..e8e3d7b 100644
> --- a/arch/arm/mach-exynos/Kconfig
> +++ b/arch/arm/mach-exynos/Kconfig
> @@ -422,6 +422,7 @@ config MACH_EXYNOS5_DT
> select SOC_EXYNOS5250
> select USE_OF
> select ARM_AMBA
> + select EXYNOS4_SETUP_USB_PHY
> help
> Machine support for Samsung EXYNOS5 machine with device tree enabled.
> Select this if a fdt blob is available for the EXYNOS5 SoC based board.
> diff --git a/arch/arm/mach-exynos/include/mach/map.h b/arch/arm/mach-exynos/include/mach/map.h
> index 9694424..7f5eb03 100644
> --- a/arch/arm/mach-exynos/include/mach/map.h
> +++ b/arch/arm/mach-exynos/include/mach/map.h
> @@ -195,6 +195,7 @@
> #define EXYNOS4_PA_EHCI 0x12580000
> #define EXYNOS4_PA_OHCI 0x12590000
> #define EXYNOS4_PA_HSPHY 0x125B0000
> +#define EXYNOS5_PA_HSPHY 0x12130000
> #define EXYNOS4_PA_MFC 0x13400000
>
> #define EXYNOS4_PA_UART 0x13800000
> diff --git a/arch/arm/mach-exynos/mach-exynos5-dt.c b/arch/arm/mach-exynos/mach-exynos5-dt.c
> index db1cd8e..bc041be 100644
> --- a/arch/arm/mach-exynos/mach-exynos5-dt.c
> +++ b/arch/arm/mach-exynos/mach-exynos5-dt.c
> @@ -11,6 +11,7 @@
>
> #include <linux/of_platform.h>
> #include <linux/serial_core.h>
> +#include <linux/platform_data/samsung-usbphy.h>
>
> #include <asm/mach/arch.h>
> #include <asm/hardware/gic.h>
> @@ -18,9 +19,16 @@
>
> #include <plat/cpu.h>
> #include <plat/regs-serial.h>
> +#include <plat/usb-phy.h>
>
> #include "common.h"
>
> +static struct samsung_usbphy_data exynos5_usbphy_pdata = {
> + .pmu_isolation = s5p_usb_phy_pmu_isolation,
> + .phy_cfg_sel = s5p_usb_phy_cfg_sel,
> + .type = TYPE_HOST,
> +};
> +
> /*
> * The following lookup table is used to override device names when devices
> * are registered from device tree. This is temporarily added to enable
> @@ -72,6 +80,8 @@ static const struct of_dev_auxdata exynos5250_auxdata_lookup[] __initconst = {
> "exynos-gsc.2", NULL),
> OF_DEV_AUXDATA("samsung,exynos5-gsc", EXYNOS5_PA_GSC3,
> "exynos-gsc.3", NULL),
> + OF_DEV_AUXDATA("samsung,exynos5250-usbphy", EXYNOS5_PA_HSPHY,
> + "s3c-usbphy", &exynos5_usbphy_pdata),
> {},
> };
>
> diff --git a/arch/arm/mach-exynos/setup-usb-phy.c b/arch/arm/mach-exynos/setup-usb-phy.c
> index be6cd4f..bebc99b 100644
> --- a/arch/arm/mach-exynos/setup-usb-phy.c
> +++ b/arch/arm/mach-exynos/setup-usb-phy.c
> @@ -14,11 +14,15 @@
> #include <linux/err.h>
> #include <linux/io.h>
> #include <linux/platform_device.h>
> +#include <linux/platform_data/samsung-usbphy.h>
> #include <mach/regs-pmu.h>
> #include <mach/regs-usb-phy.h>
> #include <plat/cpu.h>
> +#include <plat/map-base.h>
> #include <plat/usb-phy.h>
>
> +#define EXYNOS5_USB_CFG (S3C_VA_SYS + (0x230))
The parentheses around 0x230 is not necessary.
+#define EXYNOS5_USB_CFG (S3C_VA_SYS + 0x230)
> +
> static atomic_t host_usage;
>
> static int exynos4_usb_host_phy_is_on(void)
> @@ -224,13 +228,38 @@ int s5p_usb_phy_exit(struct platform_device *pdev, int type)
>
> void s5p_usb_phy_pmu_isolation(int on, int type)
> {
> - if (on) {
> - writel(readl(S5P_USBDEVICE_PHY_CONTROL)
> - & ~S5P_USBDEVICE_PHY_ENABLE,
> - S5P_USBDEVICE_PHY_CONTROL);
> + if (type == TYPE_HOST) {
> + if (on) {
> + writel(readl(S5P_USBHOST_PHY_CONTROL)
> + & ~S5P_USBHOST_PHY_ENABLE,
> + S5P_USBHOST_PHY_CONTROL);
> + } else {
> + writel(readl(S5P_USBHOST_PHY_CONTROL)
> + | S5P_USBHOST_PHY_ENABLE,
> + S5P_USBHOST_PHY_CONTROL);
> + }
> } else {
> - writel(readl(S5P_USBDEVICE_PHY_CONTROL)
> - | S5P_USBDEVICE_PHY_ENABLE,
> - S5P_USBDEVICE_PHY_CONTROL);
> + if (on) {
> + writel(readl(S5P_USBDEVICE_PHY_CONTROL)
> + & ~S5P_USBDEVICE_PHY_ENABLE,
> + S5P_USBDEVICE_PHY_CONTROL);
> + } else {
> + writel(readl(S5P_USBDEVICE_PHY_CONTROL)
> + | S5P_USBDEVICE_PHY_ENABLE,
> + S5P_USBDEVICE_PHY_CONTROL);
> + }
> }
> }
> +
> +/* Switch between HOST and OTG link from PHY_CFG */
> +void s5p_usb_phy_cfg_sel(struct device *dev, int type)
> +{
> + u32 is_host;
> +
> + is_host = readl(EXYNOS5_USB_CFG);
> + writel(type, EXYNOS5_USB_CFG);
> +
> + if (is_host != type)
> + dev_dbg(dev, "Changed USB MUX from %s to %s",
> + is_host ? "Host" : "Device", type ? "Host" : "Device");
> +}
> diff --git a/arch/arm/plat-samsung/include/plat/usb-phy.h b/arch/arm/plat-samsung/include/plat/usb-phy.h
> index 7a4a959..a57b8bb 100644
> --- a/arch/arm/plat-samsung/include/plat/usb-phy.h
> +++ b/arch/arm/plat-samsung/include/plat/usb-phy.h
> @@ -19,5 +19,6 @@ enum s5p_usb_phy_type {
> extern int s5p_usb_phy_init(struct platform_device *pdev, int type);
> extern int s5p_usb_phy_exit(struct platform_device *pdev, int type);
> extern void s5p_usb_phy_pmu_isolation(int on, int type);
> +extern void s5p_usb_phy_cfg_sel(struct device *dev, int type);
>
> #endif /* __PLAT_SAMSUNG_USB_PHY_H */
> diff --git a/include/linux/platform_data/samsung-usbphy.h b/include/linux/platform_data/samsung-usbphy.h
> index 364a38a..2b400e0 100644
> --- a/include/linux/platform_data/samsung-usbphy.h
> +++ b/include/linux/platform_data/samsung-usbphy.h
> @@ -25,6 +25,7 @@ enum phy_type {
>
> struct samsung_usbphy_data {
> void (*pmu_isolation)(int on, int phy_type);
> + void (*phy_cfg_sel)(struct device *dev, int phy_type);
> int type;
> };
>
> --
> 1.7.6.5
>
> --
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