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-rw-r--r--target/linux/ramips/patches-3.9/0160-USB-phy-add-ralink-SoC-driver.patch238
1 files changed, 238 insertions, 0 deletions
diff --git a/target/linux/ramips/patches-3.9/0160-USB-phy-add-ralink-SoC-driver.patch b/target/linux/ramips/patches-3.9/0160-USB-phy-add-ralink-SoC-driver.patch
new file mode 100644
index 0000000000..095f911809
--- /dev/null
+++ b/target/linux/ramips/patches-3.9/0160-USB-phy-add-ralink-SoC-driver.patch
@@ -0,0 +1,238 @@
+From efe391a3614b98a0f84fd49e63b4009185ff9a1a Mon Sep 17 00:00:00 2001
+From: John Crispin <blogic@openwrt.org>
+Date: Thu, 2 May 2013 23:29:08 +0200
+Subject: [PATCH 160/164] USB: phy: add ralink SoC driver
+
+Signed-off-by: John Crispin <blogic@openwrt.org>
+---
+ drivers/usb/phy/Kconfig | 8 ++
+ drivers/usb/phy/Makefile | 1 +
+ drivers/usb/phy/ralink-phy.c | 191 ++++++++++++++++++++++++++++++++++++++++++
+ 3 files changed, 200 insertions(+)
+ create mode 100644 drivers/usb/phy/ralink-phy.c
+
+diff --git a/drivers/usb/phy/Kconfig b/drivers/usb/phy/Kconfig
+index 9054938..b197c70 100644
+--- a/drivers/usb/phy/Kconfig
++++ b/drivers/usb/phy/Kconfig
+@@ -74,3 +74,11 @@ config SAMSUNG_USBPHY
+ help
+ Enable this to support Samsung USB phy controller for samsung
+ SoCs.
++
++config RALINK_USBPHY
++ bool "Ralink USB PHY controller Driver"
++ depends on MIPS && RALINK
++ select USB_OTG_UTILS
++ help
++ Enable this to support ralink USB phy controller for ralink
++ SoCs.
+diff --git a/drivers/usb/phy/Makefile b/drivers/usb/phy/Makefile
+index b13faa1..2df30f1 100644
+--- a/drivers/usb/phy/Makefile
++++ b/drivers/usb/phy/Makefile
+@@ -12,3 +12,4 @@ obj-$(CONFIG_MV_U3D_PHY) += mv_u3d_phy.o
+ obj-$(CONFIG_USB_EHCI_TEGRA) += tegra_usb_phy.o
+ obj-$(CONFIG_USB_RCAR_PHY) += rcar-phy.o
+ obj-$(CONFIG_SAMSUNG_USBPHY) += samsung-usbphy.o
++obj-$(CONFIG_RALINK_USBPHY) += ralink-phy.o
+diff --git a/drivers/usb/phy/ralink-phy.c b/drivers/usb/phy/ralink-phy.c
+new file mode 100644
+index 0000000..3fbabea
+--- /dev/null
++++ b/drivers/usb/phy/ralink-phy.c
+@@ -0,0 +1,191 @@
++/*
++ * Copyright (C) 2013 John Crispin <blogic@openwrt.org>
++ *
++ * based on: Renesas R-Car USB phy driver
++ *
++ * 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/io.h>
++#include <linux/usb/otg.h>
++#include <linux/of_platform.h>
++#include <linux/platform_device.h>
++#include <linux/spinlock.h>
++#include <linux/module.h>
++#include <linux/reset.h>
++
++#include <asm/mach-ralink/ralink_regs.h>
++
++#define RT_SYSC_REG_SYSCFG1 0x014
++#define RT_SYSC_REG_CLKCFG1 0x030
++#define RT_SYSC_REG_USB_PHY_CFG 0x05c
++
++#define RT_RSTCTRL_UDEV BIT(25)
++#define RT_RSTCTRL_UHST BIT(22)
++#define RT_SYSCFG1_USB0_HOST_MODE BIT(10)
++
++#define MT7620_CLKCFG1_UPHY0_CLK_EN BIT(25)
++#define RT_CLKCFG1_UPHY1_CLK_EN BIT(20)
++#define RT_CLKCFG1_UPHY0_CLK_EN BIT(18)
++
++#define USB_PHY_UTMI_8B60M BIT(1)
++#define UDEV_WAKEUP BIT(0)
++
++static atomic_t usb_pwr_ref = ATOMIC_INIT(0);
++static struct reset_control *rstdev;
++static struct reset_control *rsthost;
++static u32 phy_clk;
++
++static void usb_phy_enable(int state)
++{
++ if (state)
++ rt_sysc_m32(0, phy_clk, RT_SYSC_REG_CLKCFG1);
++ else
++ rt_sysc_m32(phy_clk, 0, RT_SYSC_REG_CLKCFG1);
++ mdelay(100);
++}
++
++static int usb_power_on(struct usb_phy *phy)
++{
++ if (atomic_inc_return(&usb_pwr_ref) == 1) {
++ u32 t;
++
++ usb_phy_enable(1);
++
++ reset_control_assert(rstdev);
++ reset_control_assert(rsthost);
++
++ if (OTG_STATE_B_HOST) {
++ rt_sysc_m32(0, RT_SYSCFG1_USB0_HOST_MODE, RT_SYSC_REG_SYSCFG1);
++ reset_control_deassert(rsthost);
++ } else {
++ rt_sysc_m32(RT_SYSCFG1_USB0_HOST_MODE, 0, RT_SYSC_REG_SYSCFG1);
++ reset_control_deassert(rstdev);
++ }
++ mdelay(100);
++
++ t = rt_sysc_r32(RT_SYSC_REG_USB_PHY_CFG);
++ dev_info(phy->dev, "remote usb device wakeup %s\n",
++ (t & UDEV_WAKEUP) ? ("enabbled") : ("disabled"));
++ if (t & USB_PHY_UTMI_8B60M)
++ dev_info(phy->dev, "UTMI 8bit 60MHz\n");
++ else
++ dev_info(phy->dev, "UTMI 16bit 30MHz\n");
++ }
++
++ return 0;
++}
++
++static void usb_power_off(struct usb_phy *phy)
++{
++ if (atomic_dec_return(&usb_pwr_ref) == 0) {
++ usb_phy_enable(0);
++ reset_control_assert(rstdev);
++ reset_control_assert(rsthost);
++ }
++}
++
++static int usb_set_host(struct usb_otg *otg, struct usb_bus *host)
++{
++ otg->gadget = NULL;
++ otg->host = host;
++
++ return 0;
++}
++
++static int usb_set_peripheral(struct usb_otg *otg,
++ struct usb_gadget *gadget)
++{
++ otg->host = NULL;
++ otg->gadget = gadget;
++
++ return 0;
++}
++
++static const struct of_device_id ralink_usbphy_dt_match[] = {
++ { .compatible = "ralink,rt3xxx-usbphy", .data = (void *) (RT_CLKCFG1_UPHY1_CLK_EN | RT_CLKCFG1_UPHY0_CLK_EN) },
++ { .compatible = "ralink,mt7620a-usbphy", .data = (void *) MT7620_CLKCFG1_UPHY0_CLK_EN },
++ {},
++};
++MODULE_DEVICE_TABLE(of, ralink_usbphy_dt_match);
++
++static int usb_phy_probe(struct platform_device *pdev)
++{
++ const struct of_device_id *match;
++ struct device *dev = &pdev->dev;
++ struct usb_otg *otg;
++ struct usb_phy *phy;
++ int ret;
++
++ match = of_match_device(ralink_usbphy_dt_match, &pdev->dev);
++ phy_clk = (int) match->data;
++
++ rsthost = devm_reset_control_get(&pdev->dev, "host");
++ if (IS_ERR(rsthost))
++ return PTR_ERR(rsthost);
++
++ rstdev = devm_reset_control_get(&pdev->dev, "device");
++ if (IS_ERR(rstdev))
++ return PTR_ERR(rstdev);
++
++ phy = devm_kzalloc(dev, sizeof(*phy), GFP_KERNEL);
++ if (!phy) {
++ dev_err(&pdev->dev, "unable to allocate memory for USB PHY\n");
++ return -ENOMEM;
++ }
++
++ otg = devm_kzalloc(&pdev->dev, sizeof(*otg), GFP_KERNEL);
++ if (!otg) {
++ dev_err(&pdev->dev, "unable to allocate memory for USB OTG\n");
++ return -ENOMEM;
++ }
++
++ phy->dev = dev;
++ phy->label = dev_name(dev);
++ phy->init = usb_power_on;
++ phy->shutdown = usb_power_off;
++ otg->set_host = usb_set_host;
++ otg->set_peripheral = usb_set_peripheral;
++ otg->phy = phy;
++ phy->otg = otg;
++ ret = usb_add_phy(phy, USB_PHY_TYPE_USB2);
++
++ if (ret < 0) {
++ dev_err(dev, "usb phy addition error\n");
++ return ret;
++ }
++
++ platform_set_drvdata(pdev, phy);
++
++ dev_info(&pdev->dev, "loaded\n");
++
++ return ret;
++}
++
++static int usb_phy_remove(struct platform_device *pdev)
++{
++ struct usb_phy *phy = platform_get_drvdata(pdev);
++
++ usb_remove_phy(phy);
++
++ return 0;
++}
++
++static struct platform_driver usb_phy_driver = {
++ .driver = {
++ .owner = THIS_MODULE,
++ .name = "rt3xxx-usbphy",
++ .of_match_table = of_match_ptr(ralink_usbphy_dt_match),
++ },
++ .probe = usb_phy_probe,
++ .remove = usb_phy_remove,
++};
++
++module_platform_driver(usb_phy_driver);
++
++MODULE_LICENSE("GPL v2");
++MODULE_DESCRIPTION("Ralink USB phy");
++MODULE_AUTHOR("John Crispin <blogic@openwrt.org>");
+--
+1.7.10.4
+
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