From bc67bd229555f708717cd7647429f64b4c563a52 Mon Sep 17 00:00:00 2001 From: John Crispin Date: Thu, 7 Aug 2014 14:41:19 +0000 Subject: ralink: add 3.14 support Signed-off-by: John Crispin SVN-Revision: 42040 --- .../0037-USB-phy-add-ralink-SoC-driver.patch | 240 +++++++++++++++++++++ 1 file changed, 240 insertions(+) create mode 100644 target/linux/ramips/patches-3.14/0037-USB-phy-add-ralink-SoC-driver.patch (limited to 'target/linux/ramips/patches-3.14/0037-USB-phy-add-ralink-SoC-driver.patch') diff --git a/target/linux/ramips/patches-3.14/0037-USB-phy-add-ralink-SoC-driver.patch b/target/linux/ramips/patches-3.14/0037-USB-phy-add-ralink-SoC-driver.patch new file mode 100644 index 0000000000..b0c9a1af8b --- /dev/null +++ b/target/linux/ramips/patches-3.14/0037-USB-phy-add-ralink-SoC-driver.patch @@ -0,0 +1,240 @@ +From 900fa0abfea0cb7562c523769981dadc25f1f8cd Mon Sep 17 00:00:00 2001 +From: John Crispin +Date: Sun, 27 Jul 2014 09:43:42 +0100 +Subject: [PATCH 37/57] USB: phy: add ralink SoC driver + +Signed-off-by: John Crispin +--- + drivers/usb/phy/Kconfig | 8 ++ + drivers/usb/phy/Makefile | 1 + + drivers/usb/phy/ralink-phy.c | 190 ++++++++++++++++++++++++++++++++++++++++++ + 3 files changed, 199 insertions(+) + create mode 100644 drivers/usb/phy/ralink-phy.c + +diff --git a/drivers/usb/phy/Kconfig b/drivers/usb/phy/Kconfig +index 7d1451d..fc04d76 100644 +--- a/drivers/usb/phy/Kconfig ++++ b/drivers/usb/phy/Kconfig +@@ -251,6 +251,14 @@ config USB_RCAR_GEN2_PHY + To compile this driver as a module, choose M here: the + module will be called phy-rcar-gen2-usb. + ++config RALINK_USBPHY ++ bool "Ralink USB PHY controller Driver" ++ depends on MIPS && RALINK ++ select USB_PHY ++ help ++ Enable this to support ralink USB phy controller for ralink ++ SoCs. ++ + config USB_ULPI + bool "Generic ULPI Transceiver Driver" + depends on ARM +diff --git a/drivers/usb/phy/Makefile b/drivers/usb/phy/Makefile +index be58ada..52d59c1 100644 +--- a/drivers/usb/phy/Makefile ++++ b/drivers/usb/phy/Makefile +@@ -33,3 +33,4 @@ obj-$(CONFIG_USB_RCAR_GEN2_PHY) += phy-rcar-gen2-usb.o + obj-$(CONFIG_USB_ULPI) += phy-ulpi.o + obj-$(CONFIG_USB_ULPI_VIEWPORT) += phy-ulpi-viewport.o + obj-$(CONFIG_KEYSTONE_USB_PHY) += phy-keystone.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..28046e5 +--- /dev/null ++++ b/drivers/usb/phy/ralink-phy.c +@@ -0,0 +1,190 @@ ++/* ++ * Copyright (C) 2013 John Crispin ++ * ++ * 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 ++#include ++#include ++#include ++#include ++#include ++#include ++#include ++ ++#include ++ ++#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); ++ if (!IS_ERR(rsthost)) ++ reset_control_deassert(rsthost); ++ } 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 void usb_power_off(struct usb_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); ++ } ++} ++ ++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"); ++ rstdev = devm_reset_control_get(&pdev->dev, "device"); ++ ++ 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 "); +-- +1.7.10.4 + -- cgit v1.2.3