+++ /dev/null
-From 633f0e08498aebfdb932bd71319b4cb136709499 Mon Sep 17 00:00:00 2001
-From: John Crispin <john@phrozen.org>
-Date: Tue, 24 Jul 2018 14:45:49 +0200
-Subject: [PATCH 2/3] phy: qcom-ipq4019-usb: add driver for QCOM/IPQ4019
-
-Add a driver to setup the USB phy on Qualcom Dakota SoCs.
-The driver sets up HS and SS phys. In case of HS some magic values need to
-be written to magic offsets. These were taken from the SDK driver.
-
-Signed-off-by: John Crispin <john@phrozen.org>
----
- drivers/phy/qualcomm/Kconfig | 7 ++
- drivers/phy/qualcomm/Makefile | 1 +
- drivers/phy/qualcomm/phy-qcom-ipq4019-usb.c | 188 ++++++++++++++++++++++++++++
- 3 files changed, 196 insertions(+)
- create mode 100644 drivers/phy/qualcomm/phy-qcom-ipq4019-usb.c
-
---- a/drivers/phy/qualcomm/Kconfig
-+++ b/drivers/phy/qualcomm/Kconfig
-@@ -8,6 +8,13 @@ config PHY_QCOM_APQ8064_SATA
- depends on OF
- select GENERIC_PHY
-
-+config PHY_QCOM_IPQ4019_USB
-+ tristate "Qualcomm IPQ4019 USB PHY module"
-+ depends on OF && ARCH_QCOM
-+ select GENERIC_PHY
-+ help
-+ Support for the USB PHY on QCOM IPQ4019/Dakota chipsets.
-+
- config PHY_QCOM_IPQ806X_SATA
- tristate "Qualcomm IPQ806x SATA SerDes/PHY driver"
- depends on ARCH_QCOM
---- /dev/null
-+++ b/drivers/phy/qualcomm/phy-qcom-ipq4019-usb.c
-@@ -0,0 +1,188 @@
-+/*
-+ * Copyright (C) 2018 John Crispin <john@phrozen.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/of_platform.h>
-+#include <linux/phy/phy.h>
-+#include <linux/platform_device.h>
-+#include <linux/reset.h>
-+
-+/*
-+ * Magic registers copied from the SDK driver code
-+ */
-+#define PHY_CTRL0_ADDR 0x000
-+#define PHY_CTRL1_ADDR 0x004
-+#define PHY_CTRL2_ADDR 0x008
-+#define PHY_CTRL3_ADDR 0x00C
-+#define PHY_CTRL4_ADDR 0x010
-+#define PHY_MISC_ADDR 0x024
-+#define PHY_IPG_ADDR 0x030
-+
-+#define PHY_CTRL0_VAL 0xA4600015
-+#define PHY_CTRL1_VAL 0x09500000
-+#define PHY_CTRL2_VAL 0x00058180
-+#define PHY_CTRL3_VAL 0x6DB6DCD6
-+#define PHY_CTRL4_VAL 0x836DB6DB
-+#define PHY_MISC_VAL 0x3803FB0C
-+#define PHY_IPG_VAL 0x47323232
-+
-+struct ipq4019_usb_phy {
-+ struct device *dev;
-+ struct phy *phy;
-+ void __iomem *base;
-+ struct reset_control *por_rst;
-+ struct reset_control *srif_rst;
-+};
-+
-+static int ipq4019_ss_phy_power_off(struct phy *_phy)
-+{
-+ struct ipq4019_usb_phy *phy = phy_get_drvdata(_phy);
-+
-+ reset_control_assert(phy->por_rst);
-+ msleep(10);
-+
-+ return 0;
-+}
-+
-+static int ipq4019_ss_phy_power_on(struct phy *_phy)
-+{
-+ struct ipq4019_usb_phy *phy = phy_get_drvdata(_phy);
-+
-+ ipq4019_ss_phy_power_off(_phy);
-+
-+ reset_control_deassert(phy->por_rst);
-+
-+ return 0;
-+}
-+
-+static struct phy_ops ipq4019_usb_ss_phy_ops = {
-+ .power_on = ipq4019_ss_phy_power_on,
-+ .power_off = ipq4019_ss_phy_power_off,
-+};
-+
-+static int ipq4019_hs_phy_power_off(struct phy *_phy)
-+{
-+ struct ipq4019_usb_phy *phy = phy_get_drvdata(_phy);
-+
-+ reset_control_assert(phy->por_rst);
-+ msleep(10);
-+
-+ reset_control_assert(phy->srif_rst);
-+ msleep(10);
-+
-+ return 0;
-+}
-+
-+static int ipq4019_hs_phy_power_on(struct phy *_phy)
-+{
-+ struct ipq4019_usb_phy *phy = phy_get_drvdata(_phy);
-+
-+ ipq4019_hs_phy_power_off(_phy);
-+
-+ reset_control_deassert(phy->srif_rst);
-+ msleep(10);
-+
-+ writel(PHY_CTRL0_VAL, phy->base + PHY_CTRL0_ADDR);
-+ writel(PHY_CTRL1_VAL, phy->base + PHY_CTRL1_ADDR);
-+ writel(PHY_CTRL2_VAL, phy->base + PHY_CTRL2_ADDR);
-+ writel(PHY_CTRL3_VAL, phy->base + PHY_CTRL3_ADDR);
-+ writel(PHY_CTRL4_VAL, phy->base + PHY_CTRL4_ADDR);
-+ writel(PHY_MISC_VAL, phy->base + PHY_MISC_ADDR);
-+ writel(PHY_IPG_VAL, phy->base + PHY_IPG_ADDR);
-+ msleep(10);
-+
-+ reset_control_deassert(phy->por_rst);
-+
-+ return 0;
-+}
-+
-+static struct phy_ops ipq4019_usb_hs_phy_ops = {
-+ .power_on = ipq4019_hs_phy_power_on,
-+ .power_off = ipq4019_hs_phy_power_off,
-+};
-+
-+static const struct of_device_id ipq4019_usb_phy_of_match[] = {
-+ { .compatible = "qcom,usb-hs-ipq4019-phy", .data = &ipq4019_usb_hs_phy_ops},
-+ { .compatible = "qcom,usb-ss-ipq4019-phy", .data = &ipq4019_usb_ss_phy_ops},
-+ { },
-+};
-+MODULE_DEVICE_TABLE(of, ipq4019_usb_phy_of_match);
-+
-+static int ipq4019_usb_phy_probe(struct platform_device *pdev)
-+{
-+ struct device *dev = &pdev->dev;
-+ struct resource *res;
-+ struct phy_provider *phy_provider;
-+ struct ipq4019_usb_phy *phy;
-+ const struct of_device_id *match;
-+
-+ match = of_match_device(ipq4019_usb_phy_of_match, &pdev->dev);
-+ if (!match)
-+ return -ENODEV;
-+
-+ phy = devm_kzalloc(dev, sizeof(*phy), GFP_KERNEL);
-+ if (!phy)
-+ return -ENOMEM;
-+
-+ phy->dev = &pdev->dev;
-+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-+ phy->base = devm_ioremap_resource(&pdev->dev, res);
-+ if (IS_ERR(phy->base)) {
-+ dev_err(dev, "failed to remap register memory\n");
-+ return PTR_ERR(phy->base);
-+ }
-+
-+ phy->por_rst = devm_reset_control_get(phy->dev, "por_rst");
-+ if (IS_ERR(phy->por_rst)) {
-+ if (PTR_ERR(phy->por_rst) != -EPROBE_DEFER)
-+ dev_err(dev, "POR reset is missing\n");
-+ return PTR_ERR(phy->por_rst);
-+ }
-+
-+ phy->srif_rst = devm_reset_control_get_optional(phy->dev, "srif_rst");
-+ if (IS_ERR(phy->srif_rst))
-+ return PTR_ERR(phy->srif_rst);
-+
-+ phy->phy = devm_phy_create(dev, NULL, match->data);
-+ if (IS_ERR(phy->phy)) {
-+ dev_err(dev, "failed to create PHY\n");
-+ return PTR_ERR(phy->phy);
-+ }
-+ phy_set_drvdata(phy->phy, phy);
-+
-+ phy_provider = devm_of_phy_provider_register(dev, of_phy_simple_xlate);
-+
-+ return PTR_ERR_OR_ZERO(phy_provider);
-+}
-+
-+static struct platform_driver ipq4019_usb_phy_driver = {
-+ .probe = ipq4019_usb_phy_probe,
-+ .driver = {
-+ .of_match_table = ipq4019_usb_phy_of_match,
-+ .name = "ipq4019-usb-phy",
-+ }
-+};
-+module_platform_driver(ipq4019_usb_phy_driver);
-+
-+MODULE_DESCRIPTION("QCOM/IPQ4019 USB phy driver");
-+MODULE_AUTHOR("John Crispin <john@phrozen.org>");
-+MODULE_LICENSE("GPL v2");
---- a/drivers/phy/qualcomm/Makefile
-+++ b/drivers/phy/qualcomm/Makefile
-@@ -1,5 +1,6 @@
- # SPDX-License-Identifier: GPL-2.0
- obj-$(CONFIG_PHY_QCOM_APQ8064_SATA) += phy-qcom-apq8064-sata.o
-+obj-$(CONFIG_PHY_QCOM_IPQ4019_USB) += phy-qcom-ipq4019-usb.o
- obj-$(CONFIG_PHY_QCOM_IPQ806X_SATA) += phy-qcom-ipq806x-sata.o
- obj-$(CONFIG_PHY_QCOM_QMP) += phy-qcom-qmp.o
- obj-$(CONFIG_PHY_QCOM_QUSB2) += phy-qcom-qusb2.o
projects / openwrt / staging / mkresin.git / blobdiff