+++ /dev/null
---- 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");
projects / openwrt / staging / lynxis / omap.git / blobdiff