OpenWrt – Rev 4
?pathlinks?
From e73682ec4455c34f3f3edc7f40d90ed297521012 Mon Sep 17 00:00:00 2001
From: Senthilkumar N L <snlakshm@codeaurora.org>
Date: Tue, 6 Jan 2015 12:52:23 +0530
Subject: [PATCH] qcom: ipq4019: Add IPQ4019 USB HS/SS PHY drivers
These drivers handles control and configuration of the HS
and SS USB PHY transceivers.
Signed-off-by: Senthilkumar N L <snlakshm@codeaurora.org>
Signed-off-by: Christian Lamparter <chunkeey@gmail.com>
---
Changed:
- replaced spaces with tabs
- remove emulation and host variables
---
drivers/usb/phy/Kconfig | 11 ++
drivers/usb/phy/Makefile | 2 +
drivers/usb/phy/phy-qca-baldur.c | 233 +++++++++++++++++++++++++++++++++++++++
drivers/usb/phy/phy-qca-uniphy.c | 141 +++++++++++++++++++++++
4 files changed, 387 insertions(+)
create mode 100644 drivers/usb/phy/phy-qca-baldur.c
create mode 100644 drivers/usb/phy/phy-qca-uniphy.c
--- a/drivers/usb/phy/Kconfig
+++ b/drivers/usb/phy/Kconfig
@@ -188,6 +188,17 @@ config USB_MXS_PHY
MXS Phy is used by some of the i.MX SoCs, for example imx23/28/6x.
+config USB_IPQ4019_PHY
+ tristate "IPQ4019 PHY wrappers support"
+ depends on (USB || USB_GADGET) && ARCH_QCOM
+ select USB_PHY
+ help
+ Enable this to support the USB PHY transceivers on QCA961x chips.
+ It handles PHY initialization, clock management required after
+ resetting the hardware and power management.
+ This driver is required even for peripheral only or host only
+ mode configurations.
+
config USB_ULPI
bool "Generic ULPI Transceiver Driver"
depends on ARM || ARM64
--- a/drivers/usb/phy/Makefile
+++ b/drivers/usb/phy/Makefile
@@ -21,6 +21,8 @@ obj-$(CONFIG_USB_GPIO_VBUS) += phy-gpio
obj-$(CONFIG_USB_ISP1301) += phy-isp1301.o
obj-$(CONFIG_USB_MSM_OTG) += phy-msm-usb.o
obj-$(CONFIG_USB_QCOM_8X16_PHY) += phy-qcom-8x16-usb.o
+obj-$(CONFIG_USB_IPQ4019_PHY) += phy-qca-baldur.o
+obj-$(CONFIG_USB_IPQ4019_PHY) += phy-qca-uniphy.o
obj-$(CONFIG_USB_MV_OTG) += phy-mv-usb.o
obj-$(CONFIG_USB_MXS_PHY) += phy-mxs-usb.o
obj-$(CONFIG_USB_ULPI) += phy-ulpi.o
--- /dev/null
+++ b/drivers/usb/phy/phy-qca-baldur.c
@@ -0,0 +1,233 @@
+/* Copyright (c) 2015, The Linux Foundation. All rights reserved.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ *
+ */
+
+#include <linux/clk.h>
+#include <linux/err.h>
+#include <linux/io.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/platform_device.h>
+#include <linux/regulator/consumer.h>
+#include <linux/usb/phy.h>
+#include <linux/reset.h>
+#include <linux/of_device.h>
+
+/**
+ * USB Hardware registers
+ */
+#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
+
+#define USB30_HS_PHY_HOST_MODE (0x01 << 21)
+#define USB20_HS_PHY_HOST_MODE (0x01 << 5)
+
+/* used to differentiate between USB3 HS and USB2 HS PHY */
+struct qca_baldur_hs_data {
+ unsigned int usb3_hs_phy;
+ unsigned int phy_config_offset;
+};
+
+struct qca_baldur_hs_phy {
+ struct device *dev;
+ struct usb_phy phy;
+
+ void __iomem *base;
+ void __iomem *qscratch_base;
+
+ struct reset_control *por_rst;
+ struct reset_control *srif_rst;
+
+ const struct qca_baldur_hs_data *data;
+};
+
+#define phy_to_dw_phy(x) container_of((x), struct qca_baldur_hs_phy, phy)
+
+static int qca_baldur_phy_read(struct usb_phy *x, u32 reg)
+{
+ struct qca_baldur_hs_phy *phy = phy_to_dw_phy(x);
+
+ return readl(phy->base + reg);
+}
+
+static int qca_baldur_phy_write(struct usb_phy *x, u32 val, u32 reg)
+{
+ struct qca_baldur_hs_phy *phy = phy_to_dw_phy(x);
+
+ writel(val, phy->base + reg);
+ return 0;
+}
+
+static int qca_baldur_hs_phy_init(struct usb_phy *x)
+{
+ struct qca_baldur_hs_phy *phy = phy_to_dw_phy(x);
+
+ /* assert HS PHY POR reset */
+ reset_control_assert(phy->por_rst);
+ msleep(10);
+
+ /* assert HS PHY SRIF reset */
+ reset_control_assert(phy->srif_rst);
+ msleep(10);
+
+ /* deassert HS PHY SRIF reset and program HS PHY registers */
+ reset_control_deassert(phy->srif_rst);
+ msleep(10);
+
+ /* perform PHY register writes */
+ 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);
+
+ /* de-assert USB3 HS PHY POR reset */
+ reset_control_deassert(phy->por_rst);
+
+ return 0;
+}
+
+static int qca_baldur_hs_get_resources(struct qca_baldur_hs_phy *phy)
+{
+ struct platform_device *pdev = to_platform_device(phy->dev);
+ struct resource *res;
+
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ phy->base = devm_ioremap_resource(phy->dev, res);
+ if (IS_ERR(phy->base))
+ return PTR_ERR(phy->base);
+
+ phy->por_rst = devm_reset_control_get(phy->dev, "por_rst");
+ if (IS_ERR(phy->por_rst))
+ return PTR_ERR(phy->por_rst);
+
+ phy->srif_rst = devm_reset_control_get(phy->dev, "srif_rst");
+ if (IS_ERR(phy->srif_rst))
+ return PTR_ERR(phy->srif_rst);
+
+ return 0;
+}
+
+static void qca_baldur_hs_put_resources(struct qca_baldur_hs_phy *phy)
+{
+ reset_control_assert(phy->srif_rst);
+ reset_control_assert(phy->por_rst);
+}
+
+static int qca_baldur_hs_remove(struct platform_device *pdev)
+{
+ struct qca_baldur_hs_phy *phy = platform_get_drvdata(pdev);
+
+ usb_remove_phy(&phy->phy);
+ return 0;
+}
+
+static void qca_baldur_hs_phy_shutdown(struct usb_phy *x)
+{
+ struct qca_baldur_hs_phy *phy = phy_to_dw_phy(x);
+
+ qca_baldur_hs_put_resources(phy);
+}
+
+static struct usb_phy_io_ops qca_baldur_io_ops = {
+ .read = qca_baldur_phy_read,
+ .write = qca_baldur_phy_write,
+};
+
+static const struct qca_baldur_hs_data usb3_hs_data = {
+ .usb3_hs_phy = 1,
+ .phy_config_offset = USB30_HS_PHY_HOST_MODE,
+};
+
+static const struct qca_baldur_hs_data usb2_hs_data = {
+ .usb3_hs_phy = 0,
+ .phy_config_offset = USB20_HS_PHY_HOST_MODE,
+};
+
+static const struct of_device_id qca_baldur_hs_id_table[] = {
+ { .compatible = "qca,baldur-usb3-hsphy", .data = &usb3_hs_data },
+ { .compatible = "qca,baldur-usb2-hsphy", .data = &usb2_hs_data },
+ { /* Sentinel */ }
+};
+MODULE_DEVICE_TABLE(of, qca_baldur_hs_id_table);
+
+static int qca_baldur_hs_probe(struct platform_device *pdev)
+{
+ const struct of_device_id *match;
+ struct qca_baldur_hs_phy *phy;
+ int err;
+
+ match = of_match_device(qca_baldur_hs_id_table, &pdev->dev);
+ if (!match)
+ return -ENODEV;
+
+ phy = devm_kzalloc(&pdev->dev, sizeof(*phy), GFP_KERNEL);
+ if (!phy)
+ return -ENOMEM;
+
+ platform_set_drvdata(pdev, phy);
+ phy->dev = &pdev->dev;
+
+ phy->data = match->data;
+
+ err = qca_baldur_hs_get_resources(phy);
+ if (err < 0) {
+ dev_err(&pdev->dev, "failed to request resources: %d\n", err);
+ return err;
+ }
+
+ phy->phy.dev = phy->dev;
+ phy->phy.label = "qca-baldur-hsphy";
+ phy->phy.init = qca_baldur_hs_phy_init;
+ phy->phy.shutdown = qca_baldur_hs_phy_shutdown;
+ phy->phy.type = USB_PHY_TYPE_USB2;
+ phy->phy.io_ops = &qca_baldur_io_ops;
+
+ err = usb_add_phy_dev(&phy->phy);
+ return err;
+}
+
+static struct platform_driver qca_baldur_hs_driver = {
+ .probe = qca_baldur_hs_probe,
+ .remove = qca_baldur_hs_remove,
+ .driver = {
+ .name = "qca-baldur-hsphy",
+ .owner = THIS_MODULE,
+ .of_match_table = qca_baldur_hs_id_table,
+ },
+};
+
+module_platform_driver(qca_baldur_hs_driver);
+
+MODULE_ALIAS("platform:qca-baldur-hsphy");
+MODULE_LICENSE("Dual BSD/GPL");
+MODULE_DESCRIPTION("USB3 QCA BALDUR HSPHY driver");
--- /dev/null
+++ b/drivers/usb/phy/phy-qca-uniphy.c
@@ -0,0 +1,135 @@
+/* Copyright (c) 2015, The Linux Foundation. All rights reserved.
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ *
+ */
+
+#include <linux/clk.h>
+#include <linux/err.h>
+#include <linux/io.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/platform_device.h>
+#include <linux/regulator/consumer.h>
+#include <linux/usb/phy.h>
+#include <linux/reset.h>
+#include <linux/of_device.h>
+
+struct qca_uni_ss_phy {
+ struct usb_phy phy;
+ struct device *dev;
+
+ void __iomem *base;
+
+ struct reset_control *por_rst;
+};
+
+#define phy_to_dw_phy(x) container_of((x), struct qca_uni_ss_phy, phy)
+
+static void qca_uni_ss_phy_shutdown(struct usb_phy *x)
+{
+ struct qca_uni_ss_phy *phy = phy_to_dw_phy(x);
+
+ /* assert SS PHY POR reset */
+ reset_control_assert(phy->por_rst);
+}
+
+static int qca_uni_ss_phy_init(struct usb_phy *x)
+{
+ struct qca_uni_ss_phy *phy = phy_to_dw_phy(x);
+
+ /* assert SS PHY POR reset */
+ reset_control_assert(phy->por_rst);
+
+ msleep(20);
+
+ /* deassert SS PHY POR reset */
+ reset_control_deassert(phy->por_rst);
+
+ return 0;
+}
+
+static int qca_uni_ss_get_resources(struct platform_device *pdev,
+ struct qca_uni_ss_phy *phy)
+{
+ struct resource *res;
+
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ phy->base = devm_ioremap_resource(phy->dev, res);
+ if (IS_ERR(phy->base))
+ return PTR_ERR(phy->base);
+
+ phy->por_rst = devm_reset_control_get(phy->dev, "por_rst");
+ if (IS_ERR(phy->por_rst))
+ return PTR_ERR(phy->por_rst);
+
+ return 0;
+}
+
+static int qca_uni_ss_remove(struct platform_device *pdev)
+{
+ struct qca_uni_ss_phy *phy = platform_get_drvdata(pdev);
+
+ usb_remove_phy(&phy->phy);
+ return 0;
+}
+
+static const struct of_device_id qca_uni_ss_id_table[] = {
+ { .compatible = "qca,uni-ssphy" },
+ { /* Sentinel */ }
+};
+MODULE_DEVICE_TABLE(of, qca_uni_ss_id_table);
+
+static int qca_uni_ss_probe(struct platform_device *pdev)
+{
+ struct qca_uni_ss_phy *phy;
+ int ret;
+
+ phy = devm_kzalloc(&pdev->dev, sizeof(*phy), GFP_KERNEL);
+ if (!phy)
+ return -ENOMEM;
+
+ platform_set_drvdata(pdev, phy);
+ phy->dev = &pdev->dev;
+
+ ret = qca_uni_ss_get_resources(pdev, phy);
+ if (ret < 0) {
+ dev_err(&pdev->dev, "failed to request resources: %d\n", ret);
+ return ret;
+ }
+
+ phy->phy.dev = phy->dev;
+ phy->phy.label = "qca-uni-ssphy";
+ phy->phy.init = qca_uni_ss_phy_init;
+ phy->phy.shutdown = qca_uni_ss_phy_shutdown;
+ phy->phy.type = USB_PHY_TYPE_USB3;
+
+ ret = usb_add_phy_dev(&phy->phy);
+ return ret;
+}
+
+static struct platform_driver qca_uni_ss_driver = {
+ .probe = qca_uni_ss_probe,
+ .remove = qca_uni_ss_remove,
+ .driver = {
+ .name = "qca-uni-ssphy",
+ .owner = THIS_MODULE,
+ .of_match_table = qca_uni_ss_id_table,
+ },
+};
+
+module_platform_driver(qca_uni_ss_driver);
+
+MODULE_ALIAS("platform:qca-uni-ssphy");
+MODULE_LICENSE("Dual BSD/GPL");
+MODULE_DESCRIPTION("USB3 QCA UNI SSPHY driver");
Generated by GNU Enscript 1.6.5.90.