--- /dev/null
+From 08c9d6ceef01893678a5d2e8a15517c745417f21 Mon Sep 17 00:00:00 2001
+From: John Crispin <john@phrozen.org>
+Date: Tue, 6 Mar 2018 10:04:05 +0100
+Subject: [PATCH 04/27] phy: add ath79 usb phys
+
+Signed-off-by: John Crispin <john@phrozen.org>
+---
+ drivers/phy/Kconfig | 16 ++++++
+ drivers/phy/Makefile | 2 +
+ drivers/phy/phy-ar7100-usb.c | 124 +++++++++++++++++++++++++++++++++++++++++++
+ drivers/phy/phy-ar7200-usb.c | 108 +++++++++++++++++++++++++++++++++++++
+ 4 files changed, 250 insertions(+)
+ create mode 100644 drivers/phy/phy-ar7100-usb.c
+ create mode 100644 drivers/phy/phy-ar7200-usb.c
+
+--- a/drivers/phy/Kconfig
++++ b/drivers/phy/Kconfig
+@@ -24,6 +24,22 @@ config GENERIC_PHY_MIPI_DPHY
+ Provides a number of helpers a core functions for MIPI D-PHY
+ drivers to us.
+
++config PHY_AR7100_USB
++ tristate "Atheros AR7100 USB PHY driver"
++ depends on ATH79 || COMPILE_TEST
++ default y if USB_EHCI_HCD_PLATFORM
++ select PHY_SIMPLE
++ help
++ Enable this to support the USB PHY on Atheros AR7100 SoCs.
++
++config PHY_AR7200_USB
++ tristate "Atheros AR7200 USB PHY driver"
++ depends on ATH79 || COMPILE_TEST
++ default y if USB_EHCI_HCD_PLATFORM
++ select PHY_SIMPLE
++ help
++ Enable this to support the USB PHY on Atheros AR7200 SoCs.
++
+ config PHY_LPC18XX_USB_OTG
+ tristate "NXP LPC18xx/43xx SoC USB OTG PHY driver"
+ depends on OF && (ARCH_LPC18XX || COMPILE_TEST)
+--- a/drivers/phy/Makefile
++++ b/drivers/phy/Makefile
+@@ -4,6 +4,8 @@
+ #
+
+ obj-$(CONFIG_GENERIC_PHY) += phy-core.o
++obj-$(CONFIG_PHY_AR7100_USB) += phy-ar7100-usb.o
++obj-$(CONFIG_PHY_AR7200_USB) += phy-ar7200-usb.o
+ obj-$(CONFIG_GENERIC_PHY_MIPI_DPHY) += phy-core-mipi-dphy.o
+ obj-$(CONFIG_PHY_LPC18XX_USB_OTG) += phy-lpc18xx-usb-otg.o
+ obj-$(CONFIG_PHY_XGENE) += phy-xgene.o
+--- /dev/null
++++ b/drivers/phy/phy-ar7100-usb.c
+@@ -0,0 +1,140 @@
++/*
++ * Copyright (C) 2018 John Crispin <john@phrozen.org>
++ *
++ * 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.
++ */
++
++#include <linux/module.h>
++#include <linux/platform_device.h>
++#include <linux/phy/phy.h>
++#include <linux/delay.h>
++#include <linux/reset.h>
++#include <linux/of_gpio.h>
++
++#include <asm/mach-ath79/ath79.h>
++#include <asm/mach-ath79/ar71xx_regs.h>
++
++struct ar7100_usb_phy {
++ struct reset_control *rst_phy;
++ struct reset_control *rst_host;
++ struct reset_control *rst_ohci_dll;
++ void __iomem *io_base;
++ struct phy *phy;
++ int gpio;
++};
++
++static int ar7100_usb_phy_power_off(struct phy *phy)
++{
++ struct ar7100_usb_phy *priv = phy_get_drvdata(phy);
++ int err = 0;
++
++ err |= reset_control_assert(priv->rst_host);
++ err |= reset_control_assert(priv->rst_phy);
++ err |= reset_control_assert(priv->rst_ohci_dll);
++
++ return err;
++}
++
++static int ar7100_usb_phy_power_on(struct phy *phy)
++{
++ struct ar7100_usb_phy *priv = phy_get_drvdata(phy);
++ int err = 0;
++
++ err |= ar7100_usb_phy_power_off(phy);
++ mdelay(100);
++ err |= reset_control_deassert(priv->rst_ohci_dll);
++ err |= reset_control_deassert(priv->rst_phy);
++ err |= reset_control_deassert(priv->rst_host);
++ mdelay(500);
++ iowrite32(0xf0000, priv->io_base + AR71XX_USB_CTRL_REG_CONFIG);
++ iowrite32(0x20c00, priv->io_base + AR71XX_USB_CTRL_REG_FLADJ);
++
++ return err;
++}
++
++static const struct phy_ops ar7100_usb_phy_ops = {
++ .power_on = ar7100_usb_phy_power_on,
++ .power_off = ar7100_usb_phy_power_off,
++ .owner = THIS_MODULE,
++};
++
++static int ar7100_usb_phy_probe(struct platform_device *pdev)
++{
++ struct phy_provider *phy_provider;
++ struct resource *res;
++ struct ar7100_usb_phy *priv;
++
++ priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL);
++ if (!priv)
++ return -ENOMEM;
++
++ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
++ priv->io_base = devm_ioremap_resource(&pdev->dev, res);
++ if (IS_ERR(priv->io_base))
++ return PTR_ERR(priv->io_base);
++
++ priv->rst_phy = devm_reset_control_get(&pdev->dev, "usb-phy");
++ if (IS_ERR(priv->rst_phy)) {
++ dev_err(&pdev->dev, "phy reset is missing\n");
++ return PTR_ERR(priv->rst_phy);
++ }
++
++ priv->rst_host = devm_reset_control_get(&pdev->dev, "usb-host");
++ if (IS_ERR(priv->rst_host)) {
++ dev_err(&pdev->dev, "host reset is missing\n");
++ return PTR_ERR(priv->rst_host);
++ }
++
++ priv->rst_ohci_dll = devm_reset_control_get(&pdev->dev, "usb-ohci-dll");
++ if (IS_ERR(priv->rst_ohci_dll)) {
++ dev_err(&pdev->dev, "ohci-dll reset is missing\n");
++ return PTR_ERR(priv->rst_host);
++ }
++
++ priv->phy = devm_phy_create(&pdev->dev, NULL, &ar7100_usb_phy_ops);
++ if (IS_ERR(priv->phy)) {
++ dev_err(&pdev->dev, "failed to create PHY\n");
++ return PTR_ERR(priv->phy);
++ }
++
++ priv->gpio = of_get_gpio(pdev->dev.of_node, 0);
++ if (priv->gpio >= 0) {
++ int ret = devm_gpio_request(&pdev->dev, priv->gpio, dev_name(&pdev->dev));
++
++ if (ret) {
++ dev_err(&pdev->dev, "failed to request gpio\n");
++ return ret;
++ }
++ gpio_export_with_name(priv->gpio, 0, dev_name(&pdev->dev));
++ gpio_set_value(priv->gpio, 1);
++ }
++
++ phy_set_drvdata(priv->phy, priv);
++
++ phy_provider = devm_of_phy_provider_register(&pdev->dev, of_phy_simple_xlate);
++
++
++ return PTR_ERR_OR_ZERO(phy_provider);
++}
++
++static const struct of_device_id ar7100_usb_phy_of_match[] = {
++ { .compatible = "qca,ar7100-usb-phy" },
++ {}
++};
++MODULE_DEVICE_TABLE(of, ar7100_usb_phy_of_match);
++
++static struct platform_driver ar7100_usb_phy_driver = {
++ .probe = ar7100_usb_phy_probe,
++ .driver = {
++ .of_match_table = ar7100_usb_phy_of_match,
++ .name = "ar7100-usb-phy",
++ }
++};
++module_platform_driver(ar7100_usb_phy_driver);
++
++MODULE_DESCRIPTION("ATH79 USB PHY driver");
++MODULE_AUTHOR("Alban Bedel <albeu@free.fr>");
++MODULE_LICENSE("GPL");
+--- /dev/null
++++ b/drivers/phy/phy-ar7200-usb.c
+@@ -0,0 +1,136 @@
++/*
++ * Copyright (C) 2015 Alban Bedel <albeu@free.fr>
++ *
++ * 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.
++ */
++
++#include <linux/module.h>
++#include <linux/platform_device.h>
++#include <linux/phy/phy.h>
++#include <linux/reset.h>
++#include <linux/of_gpio.h>
++
++struct ar7200_usb_phy {
++ struct reset_control *rst_phy;
++ struct reset_control *rst_phy_analog;
++ struct reset_control *suspend_override;
++ struct phy *phy;
++ int gpio;
++};
++
++static int ar7200_usb_phy_power_on(struct phy *phy)
++{
++ struct ar7200_usb_phy *priv = phy_get_drvdata(phy);
++ int err = 0;
++
++ if (priv->suspend_override)
++ err = reset_control_assert(priv->suspend_override);
++ if (priv->rst_phy)
++ err |= reset_control_deassert(priv->rst_phy);
++ if (priv->rst_phy_analog)
++ err |= reset_control_deassert(priv->rst_phy_analog);
++
++ return err;
++}
++
++static int ar7200_usb_phy_power_off(struct phy *phy)
++{
++ struct ar7200_usb_phy *priv = phy_get_drvdata(phy);
++ int err = 0;
++
++ if (priv->suspend_override)
++ err = reset_control_deassert(priv->suspend_override);
++ if (priv->rst_phy)
++ err |= reset_control_assert(priv->rst_phy);
++ if (priv->rst_phy_analog)
++ err |= reset_control_assert(priv->rst_phy_analog);
++
++ return err;
++}
++
++static const struct phy_ops ar7200_usb_phy_ops = {
++ .power_on = ar7200_usb_phy_power_on,
++ .power_off = ar7200_usb_phy_power_off,
++ .owner = THIS_MODULE,
++};
++
++static int ar7200_usb_phy_probe(struct platform_device *pdev)
++{
++ struct phy_provider *phy_provider;
++ struct ar7200_usb_phy *priv;
++
++ priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL);
++ if (!priv)
++ return -ENOMEM;
++
++ priv->rst_phy = devm_reset_control_get(&pdev->dev, "usb-phy");
++ if (IS_ERR(priv->rst_phy)) {
++ if (PTR_ERR(priv->rst_phy) != -EPROBE_DEFER)
++ dev_err(&pdev->dev, "phy reset is missing\n");
++ return PTR_ERR(priv->rst_phy);
++ }
++
++ priv->rst_phy_analog = devm_reset_control_get_optional(
++ &pdev->dev, "usb-phy-analog");
++ if (IS_ERR(priv->rst_phy_analog)) {
++ if (PTR_ERR(priv->rst_phy_analog) == -ENOENT)
++ priv->rst_phy_analog = NULL;
++ else
++ return PTR_ERR(priv->rst_phy_analog);
++ }
++
++ priv->suspend_override = devm_reset_control_get_optional(
++ &pdev->dev, "usb-suspend-override");
++ if (IS_ERR(priv->suspend_override)) {
++ if (PTR_ERR(priv->suspend_override) == -ENOENT)
++ priv->suspend_override = NULL;
++ else
++ return PTR_ERR(priv->suspend_override);
++ }
++
++ priv->phy = devm_phy_create(&pdev->dev, NULL, &ar7200_usb_phy_ops);
++ if (IS_ERR(priv->phy)) {
++ dev_err(&pdev->dev, "failed to create PHY\n");
++ return PTR_ERR(priv->phy);
++ }
++
++ priv->gpio = of_get_gpio(pdev->dev.of_node, 0);
++ if (priv->gpio >= 0) {
++ int ret = devm_gpio_request(&pdev->dev, priv->gpio, dev_name(&pdev->dev));
++
++ if (ret) {
++ dev_err(&pdev->dev, "failed to request gpio\n");
++ return ret;
++ }
++ gpio_export_with_name(priv->gpio, 0, dev_name(&pdev->dev));
++ gpio_set_value(priv->gpio, 1);
++ }
++
++ phy_set_drvdata(priv->phy, priv);
++
++ phy_provider = devm_of_phy_provider_register(&pdev->dev, of_phy_simple_xlate);
++
++ return PTR_ERR_OR_ZERO(phy_provider);
++}
++
++static const struct of_device_id ar7200_usb_phy_of_match[] = {
++ { .compatible = "qca,ar7200-usb-phy" },
++ {}
++};
++MODULE_DEVICE_TABLE(of, ar7200_usb_phy_of_match);
++
++static struct platform_driver ar7200_usb_phy_driver = {
++ .probe = ar7200_usb_phy_probe,
++ .driver = {
++ .of_match_table = ar7200_usb_phy_of_match,
++ .name = "ar7200-usb-phy",
++ }
++};
++module_platform_driver(ar7200_usb_phy_driver);
++
++MODULE_DESCRIPTION("ATH79 USB PHY driver");
++MODULE_AUTHOR("Alban Bedel <albeu@free.fr>");
++MODULE_LICENSE("GPL");
projects / openwrt / openwrt.git / blobdiff