trunk-47381HEADmaster

1 files changed, 199 insertions, 0 deletions

diff --git a/target/linux/ramips/patches-3.18/0037-USB-phy-add-ralink-SoC-driver.patch b/target/linux/ramips/patches-3.18/0037-USB-phy-add-ralink-SoC-driver.patch
new file mode 100644
index 0000000..2448d0a
--- /dev/null
+++ b/target/linux/ramips/patches-3.18/0037-USB-phy-add-ralink-SoC-driver.patch
@@ -0,0 +1,199 @@
+--- a/drivers/phy/Kconfig
++++ b/drivers/phy/Kconfig
+@@ -239,6 +239,11 @@ config PHY_XGENE
+ 	help
+ 	  This option enables support for APM X-Gene SoC multi-purpose PHY.
+ 
++config PHY_RALINK_USB
++	tristate "Ralink USB PHY driver"
++	select GENERIC_PHY
++	depends on RALINK
++
+ config PHY_STIH407_USB
+ 	tristate "STMicroelectronics USB2 picoPHY driver for STiH407 family"
+ 	depends on RESET_CONTROLLER
+--- a/drivers/phy/Makefile
++++ b/drivers/phy/Makefile
+@@ -31,3 +31,4 @@ obj-$(CONFIG_PHY_ST_SPEAR1340_MIPHY)	+=
+ obj-$(CONFIG_PHY_XGENE)			+= phy-xgene.o
+ obj-$(CONFIG_PHY_STIH407_USB)		+= phy-stih407-usb.o
+ obj-$(CONFIG_PHY_STIH41X_USB)		+= phy-stih41x-usb.o
++obj-$(CONFIG_PHY_RALINK_USB)		+= phy-ralink-usb.o
+--- /dev/null
++++ b/drivers/phy/phy-ralink-usb.c
+@@ -0,0 +1,175 @@
++/*
++ * Allwinner ralink USB phy driver
++ *
++ * Copyright (C) 2014 John Crispin <blogic@openwrt.org>
++ *
++ * Based on code from
++ * Allwinner Technology Co., Ltd. <www.allwinnertech.com>
++ *
++ * 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.
++ *
++ * This program is distributed in the hope that it will be useful,
++ * but WITHOUT ANY WARRANTY; without even the implied warranty of
++ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
++ * GNU General Public License for more details.
++ */
++
++#include <linux/delay.h>
++#include <linux/err.h>
++#include <linux/io.h>
++#include <linux/kernel.h>
++#include <linux/module.h>
++#include <linux/mutex.h>
++#include <linux/phy/phy.h>
++#include <linux/platform_device.h>
++#include <linux/reset.h>
++#include <linux/of_platform.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 MT7620_CLKCFG1_UPHY1_CLK_EN	BIT(22)
++#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 struct phy *rt_phy;
++
++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 ralink_usb_phy_init(struct phy *_phy)
++{
++	return 0;
++}
++
++static int ralink_usb_phy_exit(struct phy *_phy)
++{
++	return 0;
++}
++
++static int ralink_usb_phy_power_on(struct phy *_phy)
++{
++	if (atomic_inc_return(&usb_pwr_ref) == 1) {
++		int host = 1;
++		u32 t;
++
++		usb_phy_enable(1);
++
++		if (host) {
++			rt_sysc_m32(0, RT_SYSCFG1_USB0_HOST_MODE, RT_SYSC_REG_SYSCFG1);
++			if (!IS_ERR(rsthost))
++				reset_control_deassert(rsthost);
++			if (!IS_ERR(rstdev))
++				reset_control_deassert(rstdev);
++		} else {
++			rt_sysc_m32(RT_SYSCFG1_USB0_HOST_MODE, 0, RT_SYSC_REG_SYSCFG1);
++			if (!IS_ERR(rstdev))
++				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 int ralink_usb_phy_power_off(struct phy *_phy)
++{
++	if (atomic_dec_return(&usb_pwr_ref) == 0) {
++		usb_phy_enable(0);
++		if (!IS_ERR(rstdev))
++			reset_control_assert(rstdev);
++		if (!IS_ERR(rsthost))
++			reset_control_assert(rsthost);
++	}
++
++	return 0;
++}
++
++static struct phy_ops ralink_usb_phy_ops = {
++	.init		= ralink_usb_phy_init,
++	.exit		= ralink_usb_phy_exit,
++	.power_on	= ralink_usb_phy_power_on,
++	.power_off	= ralink_usb_phy_power_off,
++	.owner		= THIS_MODULE,
++};
++
++static struct phy *ralink_usb_phy_xlate(struct device *dev,
++					struct of_phandle_args *args)
++{
++	return rt_phy;
++}
++
++static const struct of_device_id ralink_usb_phy_of_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_UPHY1_CLK_EN | MT7620_CLKCFG1_UPHY0_CLK_EN) },
++	{ },
++};
++MODULE_DEVICE_TABLE(of, ralink_usb_phy_of_match);
++
++static int ralink_usb_phy_probe(struct platform_device *pdev)
++{
++	struct device *dev = &pdev->dev;
++	struct phy_provider *phy_provider;
++	const struct of_device_id *match;
++
++	match = of_match_device(ralink_usb_phy_of_match, &pdev->dev);
++	phy_clk = (int) match->data;
++
++	rsthost = devm_reset_control_get(&pdev->dev, "host");
++	rstdev = devm_reset_control_get(&pdev->dev, "device");
++
++	rt_phy = devm_phy_create(dev, NULL, &ralink_usb_phy_ops, NULL);
++	if (IS_ERR(rt_phy)) {
++		dev_err(dev, "failed to create PHY\n");
++		return PTR_ERR(rt_phy);
++	}
++
++	phy_provider = devm_of_phy_provider_register(dev, ralink_usb_phy_xlate);
++
++	return PTR_ERR_OR_ZERO(phy_provider);
++}
++
++static struct platform_driver ralink_usb_phy_driver = {
++	.probe	= ralink_usb_phy_probe,
++	.driver = {
++		.of_match_table	= ralink_usb_phy_of_match,
++		.name  = "ralink-usb-phy",
++	}
++};
++module_platform_driver(ralink_usb_phy_driver);
++
++MODULE_DESCRIPTION("Ralink USB phy driver");
++MODULE_AUTHOR("John Crispin <blogic@openwrt.org>");
++MODULE_LICENSE("GPL v2");