+++ /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
-@@ -15,6 +15,22 @@ config GENERIC_PHY
- phy users can obtain reference to the PHY. All the users of this
- framework should select this config.
-
-+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_PHY_LPC18XX_USB_OTG) += phy-lpc18xx-usb-otg.o
- obj-$(CONFIG_PHY_XGENE) += phy-xgene.o
- obj-$(CONFIG_PHY_PISTACHIO_USB) += phy-pistachio-usb.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