[PATCH 3/5] ARM: Exynos5250: Enabling samsung-usbphy driver
Vivek Gautam
gautam.vivek at samsung.com
Tue Oct 9 01:12:26 EST 2012
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 | 45 ++++++++++++++++----
arch/arm/plat-samsung/include/plat/usb-phy.h | 3 +-
7 files changed, 66 insertions(+), 11 deletions(-)
diff --git a/Documentation/devicetree/bindings/usb/samsung-usbphy.txt b/Documentation/devicetree/bindings/usb/samsung-usbphy.txt
index 7d54d59..35aaf91 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 s5p-ehci and exynos-ohci device 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..6d9528a 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 1c62d20..039d246 100644
--- a/arch/arm/mach-exynos/setup-usb-phy.c
+++ b/arch/arm/mach-exynos/setup-usb-phy.c
@@ -14,10 +14,14 @@
#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/usb-phy.h>
+#include <plat/map-base.h>
+
+#define EXYNOS5_USB_CFG (S3C_VA_SYS + (0x230))
static atomic_t host_usage;
@@ -222,15 +226,40 @@ int s5p_usb_phy_exit(struct platform_device *pdev, int type)
return -EINVAL;
}
-void s5p_usb_phy_pmu_isolation(int on)
+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 or 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 165ffe7..a57b8bb 100644
--- a/arch/arm/plat-samsung/include/plat/usb-phy.h
+++ b/arch/arm/plat-samsung/include/plat/usb-phy.h
@@ -18,6 +18,7 @@ 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);
+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 */
--
1.7.6.5
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