+++ /dev/null
-From ef19b117b83466e1c030368101a24367a34be7f0 Mon Sep 17 00:00:00 2001
-From: Ansuel Smith <ansuelsmth@gmail.com>
-Date: Fri, 17 Jul 2020 15:16:31 +0200
-Subject: phy: qualcomm: add qcom ipq806x dwc usb phy driver
-
-This has lost in the original push for the dwc3 qcom driver.
-This is needed for ipq806x SoC as without this the usb ports
-doesn't work at all.
-
-Signed-off-by: Andy Gross <agross@codeaurora.org>
-Signed-off-by: Ansuel Smith <ansuelsmth@gmail.com>
-Tested-by: Jonathan McDowell <noodles@earth.li>
-Link: https://lore.kernel.org/r/20200717131635.11076-1-ansuelsmth@gmail.com
-Signed-off-by: Vinod Koul <vkoul@kernel.org>
----
-
-Light modification to Kconfig as some config are missing in kernel 5.4
-
- drivers/phy/qualcomm/Kconfig | 10 +
- drivers/phy/qualcomm/Makefile | 1 +
- drivers/phy/qualcomm/phy-qcom-ipq806x-usb.c | 571 ++++++++++++++++++++++++++++
- 3 files changed, 582 insertions(+)
- create mode 100644 drivers/phy/qualcomm/phy-qcom-ipq806x-usb.c
-
---- a/drivers/phy/qualcomm/Kconfig
-+++ b/drivers/phy/qualcomm/Kconfig
-@@ -91,3 +91,13 @@ config PHY_QCOM_USB_HSIC
- select GENERIC_PHY
- help
- Support for the USB HSIC ULPI compliant PHY on QCOM chipsets.
-+
-+config PHY_QCOM_IPQ806X_USB
-+ tristate "Qualcomm IPQ806x DWC3 USB PHY driver"
-+ depends on HAS_IOMEM
-+ depends on OF && (ARCH_QCOM || COMPILE_TEST)
-+ select GENERIC_PHY
-+ help
-+ This option enables support for the Synopsis PHYs present inside the
-+ Qualcomm USB3.0 DWC3 controller on ipq806x SoC. This driver supports
-+ both HS and SS PHY controllers.
---- a/drivers/phy/qualcomm/Makefile
-+++ b/drivers/phy/qualcomm/Makefile
-@@ -10,3 +10,4 @@ obj-$(CONFIG_PHY_QCOM_UFS_14NM) += phy-
- obj-$(CONFIG_PHY_QCOM_UFS_20NM) += phy-qcom-ufs-qmp-20nm.o
- obj-$(CONFIG_PHY_QCOM_USB_HS) += phy-qcom-usb-hs.o
- obj-$(CONFIG_PHY_QCOM_USB_HSIC) += phy-qcom-usb-hsic.o
-+obj-$(CONFIG_PHY_QCOM_IPQ806X_USB) += phy-qcom-ipq806x-usb.o
---- /dev/null
-+++ b/drivers/phy/qualcomm/phy-qcom-ipq806x-usb.c
-@@ -0,0 +1,571 @@
-+// SPDX-License-Identifier: GPL-2.0-only
-+
-+#include <linux/clk.h>
-+#include <linux/err.h>
-+#include <linux/io.h>
-+#include <linux/module.h>
-+#include <linux/of_device.h>
-+#include <linux/phy/phy.h>
-+#include <linux/platform_device.h>
-+#include <linux/delay.h>
-+#include <linux/regmap.h>
-+#include <linux/mfd/syscon.h>
-+
-+/* USB QSCRATCH Hardware registers */
-+#define QSCRATCH_GENERAL_CFG (0x08)
-+#define HSUSB_PHY_CTRL_REG (0x10)
-+
-+/* PHY_CTRL_REG */
-+#define HSUSB_CTRL_DMSEHV_CLAMP BIT(24)
-+#define HSUSB_CTRL_USB2_SUSPEND BIT(23)
-+#define HSUSB_CTRL_UTMI_CLK_EN BIT(21)
-+#define HSUSB_CTRL_UTMI_OTG_VBUS_VALID BIT(20)
-+#define HSUSB_CTRL_USE_CLKCORE BIT(18)
-+#define HSUSB_CTRL_DPSEHV_CLAMP BIT(17)
-+#define HSUSB_CTRL_COMMONONN BIT(11)
-+#define HSUSB_CTRL_ID_HV_CLAMP BIT(9)
-+#define HSUSB_CTRL_OTGSESSVLD_CLAMP BIT(8)
-+#define HSUSB_CTRL_CLAMP_EN BIT(7)
-+#define HSUSB_CTRL_RETENABLEN BIT(1)
-+#define HSUSB_CTRL_POR BIT(0)
-+
-+/* QSCRATCH_GENERAL_CFG */
-+#define HSUSB_GCFG_XHCI_REV BIT(2)
-+
-+/* USB QSCRATCH Hardware registers */
-+#define SSUSB_PHY_CTRL_REG (0x00)
-+#define SSUSB_PHY_PARAM_CTRL_1 (0x04)
-+#define SSUSB_PHY_PARAM_CTRL_2 (0x08)
-+#define CR_PROTOCOL_DATA_IN_REG (0x0c)
-+#define CR_PROTOCOL_DATA_OUT_REG (0x10)
-+#define CR_PROTOCOL_CAP_ADDR_REG (0x14)
-+#define CR_PROTOCOL_CAP_DATA_REG (0x18)
-+#define CR_PROTOCOL_READ_REG (0x1c)
-+#define CR_PROTOCOL_WRITE_REG (0x20)
-+
-+/* PHY_CTRL_REG */
-+#define SSUSB_CTRL_REF_USE_PAD BIT(28)
-+#define SSUSB_CTRL_TEST_POWERDOWN BIT(27)
-+#define SSUSB_CTRL_LANE0_PWR_PRESENT BIT(24)
-+#define SSUSB_CTRL_SS_PHY_EN BIT(8)
-+#define SSUSB_CTRL_SS_PHY_RESET BIT(7)
-+
-+/* SSPHY control registers - Does this need 0x30? */
-+#define SSPHY_CTRL_RX_OVRD_IN_HI(lane) (0x1006 + 0x100 * (lane))
-+#define SSPHY_CTRL_TX_OVRD_DRV_LO(lane) (0x1002 + 0x100 * (lane))
-+
-+/* SSPHY SoC version specific values */
-+#define SSPHY_RX_EQ_VALUE 4 /* Override value for rx_eq */
-+/* Override value for transmit preemphasis */
-+#define SSPHY_TX_DEEMPH_3_5DB 23
-+/* Override value for mpll */
-+#define SSPHY_MPLL_VALUE 0
-+
-+/* QSCRATCH PHY_PARAM_CTRL1 fields */
-+#define PHY_PARAM_CTRL1_TX_FULL_SWING_MASK GENMASK(26, 19)
-+#define PHY_PARAM_CTRL1_TX_DEEMPH_6DB_MASK GENMASK(19, 13)
-+#define PHY_PARAM_CTRL1_TX_DEEMPH_3_5DB_MASK GENMASK(13, 7)
-+#define PHY_PARAM_CTRL1_LOS_BIAS_MASK GENMASK(7, 2)
-+
-+#define PHY_PARAM_CTRL1_MASK \
-+ (PHY_PARAM_CTRL1_TX_FULL_SWING_MASK | \
-+ PHY_PARAM_CTRL1_TX_DEEMPH_6DB_MASK | \
-+ PHY_PARAM_CTRL1_TX_DEEMPH_3_5DB_MASK | \
-+ PHY_PARAM_CTRL1_LOS_BIAS_MASK)
-+
-+#define PHY_PARAM_CTRL1_TX_FULL_SWING(x) \
-+ (((x) << 20) & PHY_PARAM_CTRL1_TX_FULL_SWING_MASK)
-+#define PHY_PARAM_CTRL1_TX_DEEMPH_6DB(x) \
-+ (((x) << 14) & PHY_PARAM_CTRL1_TX_DEEMPH_6DB_MASK)
-+#define PHY_PARAM_CTRL1_TX_DEEMPH_3_5DB(x) \
-+ (((x) << 8) & PHY_PARAM_CTRL1_TX_DEEMPH_3_5DB_MASK)
-+#define PHY_PARAM_CTRL1_LOS_BIAS(x) \
-+ (((x) << 3) & PHY_PARAM_CTRL1_LOS_BIAS_MASK)
-+
-+/* RX OVRD IN HI bits */
-+#define RX_OVRD_IN_HI_RX_RESET_OVRD BIT(13)
-+#define RX_OVRD_IN_HI_RX_RX_RESET BIT(12)
-+#define RX_OVRD_IN_HI_RX_EQ_OVRD BIT(11)
-+#define RX_OVRD_IN_HI_RX_EQ_MASK GENMASK(10, 7)
-+#define RX_OVRD_IN_HI_RX_EQ(x) ((x) << 8)
-+#define RX_OVRD_IN_HI_RX_EQ_EN_OVRD BIT(7)
-+#define RX_OVRD_IN_HI_RX_EQ_EN BIT(6)
-+#define RX_OVRD_IN_HI_RX_LOS_FILTER_OVRD BIT(5)
-+#define RX_OVRD_IN_HI_RX_LOS_FILTER_MASK GENMASK(4, 2)
-+#define RX_OVRD_IN_HI_RX_RATE_OVRD BIT(2)
-+#define RX_OVRD_IN_HI_RX_RATE_MASK GENMASK(2, 0)
-+
-+/* TX OVRD DRV LO register bits */
-+#define TX_OVRD_DRV_LO_AMPLITUDE_MASK GENMASK(6, 0)
-+#define TX_OVRD_DRV_LO_PREEMPH_MASK GENMASK(13, 6)
-+#define TX_OVRD_DRV_LO_PREEMPH(x) ((x) << 7)
-+#define TX_OVRD_DRV_LO_EN BIT(14)
-+
-+/* MPLL bits */
-+#define SSPHY_MPLL_MASK GENMASK(8, 5)
-+#define SSPHY_MPLL(x) ((x) << 5)
-+
-+/* SS CAP register bits */
-+#define SS_CR_CAP_ADDR_REG BIT(0)
-+#define SS_CR_CAP_DATA_REG BIT(0)
-+#define SS_CR_READ_REG BIT(0)
-+#define SS_CR_WRITE_REG BIT(0)
-+
-+struct usb_phy {
-+ void __iomem *base;
-+ struct device *dev;
-+ struct clk *xo_clk;
-+ struct clk *ref_clk;
-+ u32 rx_eq;
-+ u32 tx_deamp_3_5db;
-+ u32 mpll;
-+};
-+
-+struct phy_drvdata {
-+ struct phy_ops ops;
-+ u32 clk_rate;
-+};
-+
-+/**
-+ * Write register and read back masked value to confirm it is written
-+ *
-+ * @base - QCOM DWC3 PHY base virtual address.
-+ * @offset - register offset.
-+ * @mask - register bitmask specifying what should be updated
-+ * @val - value to write.
-+ */
-+static inline void usb_phy_write_readback(struct usb_phy *phy_dwc3,
-+ u32 offset,
-+ const u32 mask, u32 val)
-+{
-+ u32 write_val, tmp = readl(phy_dwc3->base + offset);
-+
-+ tmp &= ~mask; /* retain other bits */
-+ write_val = tmp | val;
-+
-+ writel(write_val, phy_dwc3->base + offset);
-+
-+ /* Read back to see if val was written */
-+ tmp = readl(phy_dwc3->base + offset);
-+ tmp &= mask; /* clear other bits */
-+
-+ if (tmp != val)
-+ dev_err(phy_dwc3->dev, "write: %x to QSCRATCH: %x FAILED\n", val, offset);
-+}
-+
-+static int wait_for_latch(void __iomem *addr)
-+{
-+ u32 retry = 10;
-+
-+ while (true) {
-+ if (!readl(addr))
-+ break;
-+
-+ if (--retry == 0)
-+ return -ETIMEDOUT;
-+
-+ usleep_range(10, 20);
-+ }
-+
-+ return 0;
-+}
-+
-+/**
-+ * Write SSPHY register
-+ *
-+ * @base - QCOM DWC3 PHY base virtual address.
-+ * @addr - SSPHY address to write.
-+ * @val - value to write.
-+ */
-+static int usb_ss_write_phycreg(struct usb_phy *phy_dwc3,
-+ u32 addr, u32 val)
-+{
-+ int ret;
-+
-+ writel(addr, phy_dwc3->base + CR_PROTOCOL_DATA_IN_REG);
-+ writel(SS_CR_CAP_ADDR_REG,
-+ phy_dwc3->base + CR_PROTOCOL_CAP_ADDR_REG);
-+
-+ ret = wait_for_latch(phy_dwc3->base + CR_PROTOCOL_CAP_ADDR_REG);
-+ if (ret)
-+ goto err_wait;
-+
-+ writel(val, phy_dwc3->base + CR_PROTOCOL_DATA_IN_REG);
-+ writel(SS_CR_CAP_DATA_REG,
-+ phy_dwc3->base + CR_PROTOCOL_CAP_DATA_REG);
-+
-+ ret = wait_for_latch(phy_dwc3->base + CR_PROTOCOL_CAP_DATA_REG);
-+ if (ret)
-+ goto err_wait;
-+
-+ writel(SS_CR_WRITE_REG, phy_dwc3->base + CR_PROTOCOL_WRITE_REG);
-+
-+ ret = wait_for_latch(phy_dwc3->base + CR_PROTOCOL_WRITE_REG);
-+
-+err_wait:
-+ if (ret)
-+ dev_err(phy_dwc3->dev, "timeout waiting for latch\n");
-+ return ret;
-+}
-+
-+/**
-+ * Read SSPHY register.
-+ *
-+ * @base - QCOM DWC3 PHY base virtual address.
-+ * @addr - SSPHY address to read.
-+ */
-+static int usb_ss_read_phycreg(struct usb_phy *phy_dwc3,
-+ u32 addr, u32 *val)
-+{
-+ int ret;
-+
-+ writel(addr, phy_dwc3->base + CR_PROTOCOL_DATA_IN_REG);
-+ writel(SS_CR_CAP_ADDR_REG,
-+ phy_dwc3->base + CR_PROTOCOL_CAP_ADDR_REG);
-+
-+ ret = wait_for_latch(phy_dwc3->base + CR_PROTOCOL_CAP_ADDR_REG);
-+ if (ret)
-+ goto err_wait;
-+
-+ /*
-+ * Due to hardware bug, first read of SSPHY register might be
-+ * incorrect. Hence as workaround, SW should perform SSPHY register
-+ * read twice, but use only second read and ignore first read.
-+ */
-+ writel(SS_CR_READ_REG, phy_dwc3->base + CR_PROTOCOL_READ_REG);
-+
-+ ret = wait_for_latch(phy_dwc3->base + CR_PROTOCOL_READ_REG);
-+ if (ret)
-+ goto err_wait;
-+
-+ /* throwaway read */
-+ readl(phy_dwc3->base + CR_PROTOCOL_DATA_OUT_REG);
-+
-+ writel(SS_CR_READ_REG, phy_dwc3->base + CR_PROTOCOL_READ_REG);
-+
-+ ret = wait_for_latch(phy_dwc3->base + CR_PROTOCOL_READ_REG);
-+ if (ret)
-+ goto err_wait;
-+
-+ *val = readl(phy_dwc3->base + CR_PROTOCOL_DATA_OUT_REG);
-+
-+err_wait:
-+ return ret;
-+}
-+
-+static int qcom_ipq806x_usb_hs_phy_init(struct phy *phy)
-+{
-+ struct usb_phy *phy_dwc3 = phy_get_drvdata(phy);
-+ int ret;
-+ u32 val;
-+
-+ ret = clk_prepare_enable(phy_dwc3->xo_clk);
-+ if (ret)
-+ return ret;
-+
-+ ret = clk_prepare_enable(phy_dwc3->ref_clk);
-+ if (ret) {
-+ clk_disable_unprepare(phy_dwc3->xo_clk);
-+ return ret;
-+ }
-+
-+ /*
-+ * HSPHY Initialization: Enable UTMI clock, select 19.2MHz fsel
-+ * enable clamping, and disable RETENTION (power-on default is ENABLED)
-+ */
-+ val = HSUSB_CTRL_DPSEHV_CLAMP | HSUSB_CTRL_DMSEHV_CLAMP |
-+ HSUSB_CTRL_RETENABLEN | HSUSB_CTRL_COMMONONN |
-+ HSUSB_CTRL_OTGSESSVLD_CLAMP | HSUSB_CTRL_ID_HV_CLAMP |
-+ HSUSB_CTRL_DPSEHV_CLAMP | HSUSB_CTRL_UTMI_OTG_VBUS_VALID |
-+ HSUSB_CTRL_UTMI_CLK_EN | HSUSB_CTRL_CLAMP_EN | 0x70;
-+
-+ /* use core clock if external reference is not present */
-+ if (!phy_dwc3->xo_clk)
-+ val |= HSUSB_CTRL_USE_CLKCORE;
-+
-+ writel(val, phy_dwc3->base + HSUSB_PHY_CTRL_REG);
-+ usleep_range(2000, 2200);
-+
-+ /* Disable (bypass) VBUS and ID filters */
-+ writel(HSUSB_GCFG_XHCI_REV, phy_dwc3->base + QSCRATCH_GENERAL_CFG);
-+
-+ return 0;
-+}
-+
-+static int qcom_ipq806x_usb_hs_phy_exit(struct phy *phy)
-+{
-+ struct usb_phy *phy_dwc3 = phy_get_drvdata(phy);
-+
-+ clk_disable_unprepare(phy_dwc3->ref_clk);
-+ clk_disable_unprepare(phy_dwc3->xo_clk);
-+
-+ return 0;
-+}
-+
-+static int qcom_ipq806x_usb_ss_phy_init(struct phy *phy)
-+{
-+ struct usb_phy *phy_dwc3 = phy_get_drvdata(phy);
-+ int ret;
-+ u32 data;
-+
-+ ret = clk_prepare_enable(phy_dwc3->xo_clk);
-+ if (ret)
-+ return ret;
-+
-+ ret = clk_prepare_enable(phy_dwc3->ref_clk);
-+ if (ret) {
-+ clk_disable_unprepare(phy_dwc3->xo_clk);
-+ return ret;
-+ }
-+
-+ /* reset phy */
-+ data = readl(phy_dwc3->base + SSUSB_PHY_CTRL_REG);
-+ writel(data | SSUSB_CTRL_SS_PHY_RESET,
-+ phy_dwc3->base + SSUSB_PHY_CTRL_REG);
-+ usleep_range(2000, 2200);
-+ writel(data, phy_dwc3->base + SSUSB_PHY_CTRL_REG);
-+
-+ /* clear REF_PAD if we don't have XO clk */
-+ if (!phy_dwc3->xo_clk)
-+ data &= ~SSUSB_CTRL_REF_USE_PAD;
-+ else
-+ data |= SSUSB_CTRL_REF_USE_PAD;
-+
-+ writel(data, phy_dwc3->base + SSUSB_PHY_CTRL_REG);
-+
-+ /* wait for ref clk to become stable, this can take up to 30ms */
-+ msleep(30);
-+
-+ data |= SSUSB_CTRL_SS_PHY_EN | SSUSB_CTRL_LANE0_PWR_PRESENT;
-+ writel(data, phy_dwc3->base + SSUSB_PHY_CTRL_REG);
-+
-+ /*
-+ * WORKAROUND: There is SSPHY suspend bug due to which USB enumerates
-+ * in HS mode instead of SS mode. Workaround it by asserting
-+ * LANE0.TX_ALT_BLOCK.EN_ALT_BUS to enable TX to use alt bus mode
-+ */
-+ ret = usb_ss_read_phycreg(phy_dwc3, 0x102D, &data);
-+ if (ret)
-+ goto err_phy_trans;
-+
-+ data |= (1 << 7);
-+ ret = usb_ss_write_phycreg(phy_dwc3, 0x102D, data);
-+ if (ret)
-+ goto err_phy_trans;
-+
-+ ret = usb_ss_read_phycreg(phy_dwc3, 0x1010, &data);
-+ if (ret)
-+ goto err_phy_trans;
-+
-+ data &= ~0xff0;
-+ data |= 0x20;
-+ ret = usb_ss_write_phycreg(phy_dwc3, 0x1010, data);
-+ if (ret)
-+ goto err_phy_trans;
-+
-+ /*
-+ * Fix RX Equalization setting as follows
-+ * LANE0.RX_OVRD_IN_HI. RX_EQ_EN set to 0
-+ * LANE0.RX_OVRD_IN_HI.RX_EQ_EN_OVRD set to 1
-+ * LANE0.RX_OVRD_IN_HI.RX_EQ set based on SoC version
-+ * LANE0.RX_OVRD_IN_HI.RX_EQ_OVRD set to 1
-+ */
-+ ret = usb_ss_read_phycreg(phy_dwc3, SSPHY_CTRL_RX_OVRD_IN_HI(0), &data);
-+ if (ret)
-+ goto err_phy_trans;
-+
-+ data &= ~RX_OVRD_IN_HI_RX_EQ_EN;
-+ data |= RX_OVRD_IN_HI_RX_EQ_EN_OVRD;
-+ data &= ~RX_OVRD_IN_HI_RX_EQ_MASK;
-+ data |= RX_OVRD_IN_HI_RX_EQ(phy_dwc3->rx_eq);
-+ data |= RX_OVRD_IN_HI_RX_EQ_OVRD;
-+ ret = usb_ss_write_phycreg(phy_dwc3,
-+ SSPHY_CTRL_RX_OVRD_IN_HI(0), data);
-+ if (ret)
-+ goto err_phy_trans;
-+
-+ /*
-+ * Set EQ and TX launch amplitudes as follows
-+ * LANE0.TX_OVRD_DRV_LO.PREEMPH set based on SoC version
-+ * LANE0.TX_OVRD_DRV_LO.AMPLITUDE set to 110
-+ * LANE0.TX_OVRD_DRV_LO.EN set to 1.
-+ */
-+ ret = usb_ss_read_phycreg(phy_dwc3,
-+ SSPHY_CTRL_TX_OVRD_DRV_LO(0), &data);
-+ if (ret)
-+ goto err_phy_trans;
-+
-+ data &= ~TX_OVRD_DRV_LO_PREEMPH_MASK;
-+ data |= TX_OVRD_DRV_LO_PREEMPH(phy_dwc3->tx_deamp_3_5db);
-+ data &= ~TX_OVRD_DRV_LO_AMPLITUDE_MASK;
-+ data |= 0x6E;
-+ data |= TX_OVRD_DRV_LO_EN;
-+ ret = usb_ss_write_phycreg(phy_dwc3,
-+ SSPHY_CTRL_TX_OVRD_DRV_LO(0), data);
-+ if (ret)
-+ goto err_phy_trans;
-+
-+ data = 0;
-+ data &= ~SSPHY_MPLL_MASK;
-+ data |= SSPHY_MPLL(phy_dwc3->mpll);
-+ usb_ss_write_phycreg(phy_dwc3, 0x30, data);
-+
-+ /*
-+ * Set the QSCRATCH PHY_PARAM_CTRL1 parameters as follows
-+ * TX_FULL_SWING [26:20] amplitude to 110
-+ * TX_DEEMPH_6DB [19:14] to 32
-+ * TX_DEEMPH_3_5DB [13:8] set based on SoC version
-+ * LOS_BIAS [7:3] to 9
-+ */
-+ data = readl(phy_dwc3->base + SSUSB_PHY_PARAM_CTRL_1);
-+
-+ data &= ~PHY_PARAM_CTRL1_MASK;
-+
-+ data |= PHY_PARAM_CTRL1_TX_FULL_SWING(0x6e) |
-+ PHY_PARAM_CTRL1_TX_DEEMPH_6DB(0x20) |
-+ PHY_PARAM_CTRL1_TX_DEEMPH_3_5DB(phy_dwc3->tx_deamp_3_5db) |
-+ PHY_PARAM_CTRL1_LOS_BIAS(0x9);
-+
-+ usb_phy_write_readback(phy_dwc3, SSUSB_PHY_PARAM_CTRL_1,
-+ PHY_PARAM_CTRL1_MASK, data);
-+
-+err_phy_trans:
-+ return ret;
-+}
-+
-+static int qcom_ipq806x_usb_ss_phy_exit(struct phy *phy)
-+{
-+ struct usb_phy *phy_dwc3 = phy_get_drvdata(phy);
-+
-+ /* Sequence to put SSPHY in low power state:
-+ * 1. Clear REF_PHY_EN in PHY_CTRL_REG
-+ * 2. Clear REF_USE_PAD in PHY_CTRL_REG
-+ * 3. Set TEST_POWERED_DOWN in PHY_CTRL_REG to enable PHY retention
-+ */
-+ usb_phy_write_readback(phy_dwc3, SSUSB_PHY_CTRL_REG,
-+ SSUSB_CTRL_SS_PHY_EN, 0x0);
-+ usb_phy_write_readback(phy_dwc3, SSUSB_PHY_CTRL_REG,
-+ SSUSB_CTRL_REF_USE_PAD, 0x0);
-+ usb_phy_write_readback(phy_dwc3, SSUSB_PHY_CTRL_REG,
-+ SSUSB_CTRL_TEST_POWERDOWN, 0x0);
-+
-+ clk_disable_unprepare(phy_dwc3->ref_clk);
-+ clk_disable_unprepare(phy_dwc3->xo_clk);
-+
-+ return 0;
-+}
-+
-+static const struct phy_drvdata qcom_ipq806x_usb_hs_drvdata = {
-+ .ops = {
-+ .init = qcom_ipq806x_usb_hs_phy_init,
-+ .exit = qcom_ipq806x_usb_hs_phy_exit,
-+ .owner = THIS_MODULE,
-+ },
-+ .clk_rate = 60000000,
-+};
-+
-+static const struct phy_drvdata qcom_ipq806x_usb_ss_drvdata = {
-+ .ops = {
-+ .init = qcom_ipq806x_usb_ss_phy_init,
-+ .exit = qcom_ipq806x_usb_ss_phy_exit,
-+ .owner = THIS_MODULE,
-+ },
-+ .clk_rate = 125000000,
-+};
-+
-+static const struct of_device_id qcom_ipq806x_usb_phy_table[] = {
-+ { .compatible = "qcom,ipq806x-usb-phy-hs",
-+ .data = &qcom_ipq806x_usb_hs_drvdata },
-+ { .compatible = "qcom,ipq806x-usb-phy-ss",
-+ .data = &qcom_ipq806x_usb_ss_drvdata },
-+ { /* Sentinel */ }
-+};
-+MODULE_DEVICE_TABLE(of, qcom_ipq806x_usb_phy_table);
-+
-+static int qcom_ipq806x_usb_phy_probe(struct platform_device *pdev)
-+{
-+ struct resource *res;
-+ resource_size_t size;
-+ struct phy *generic_phy;
-+ struct usb_phy *phy_dwc3;
-+ const struct phy_drvdata *data;
-+ struct phy_provider *phy_provider;
-+
-+ phy_dwc3 = devm_kzalloc(&pdev->dev, sizeof(*phy_dwc3), GFP_KERNEL);
-+ if (!phy_dwc3)
-+ return -ENOMEM;
-+
-+ data = of_device_get_match_data(&pdev->dev);
-+
-+ phy_dwc3->dev = &pdev->dev;
-+
-+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-+ if (!res)
-+ return -EINVAL;
-+ size = resource_size(res);
-+ phy_dwc3->base = devm_ioremap(phy_dwc3->dev, res->start, size);
-+
-+ if (IS_ERR(phy_dwc3->base)) {
-+ dev_err(phy_dwc3->dev, "failed to map reg\n");
-+ return PTR_ERR(phy_dwc3->base);
-+ }
-+
-+ phy_dwc3->ref_clk = devm_clk_get(phy_dwc3->dev, "ref");
-+ if (IS_ERR(phy_dwc3->ref_clk)) {
-+ dev_dbg(phy_dwc3->dev, "cannot get reference clock\n");
-+ return PTR_ERR(phy_dwc3->ref_clk);
-+ }
-+
-+ clk_set_rate(phy_dwc3->ref_clk, data->clk_rate);
-+
-+ phy_dwc3->xo_clk = devm_clk_get(phy_dwc3->dev, "xo");
-+ if (IS_ERR(phy_dwc3->xo_clk)) {
-+ dev_dbg(phy_dwc3->dev, "cannot get TCXO clock\n");
-+ phy_dwc3->xo_clk = NULL;
-+ }
-+
-+ /* Parse device node to probe HSIO settings */
-+ if (device_property_read_u32(&pdev->dev, "qcom,rx-eq",
-+ &phy_dwc3->rx_eq))
-+ phy_dwc3->rx_eq = SSPHY_RX_EQ_VALUE;
-+
-+ if (device_property_read_u32(&pdev->dev, "qcom,tx-deamp_3_5db",
-+ &phy_dwc3->tx_deamp_3_5db))
-+ phy_dwc3->rx_eq = SSPHY_TX_DEEMPH_3_5DB;
-+
-+ if (device_property_read_u32(&pdev->dev, "qcom,mpll", &phy_dwc3->mpll))
-+ phy_dwc3->mpll = SSPHY_MPLL_VALUE;
-+
-+ generic_phy = devm_phy_create(phy_dwc3->dev, pdev->dev.of_node, &data->ops);
-+
-+ if (IS_ERR(generic_phy))
-+ return PTR_ERR(generic_phy);
-+
-+ phy_set_drvdata(generic_phy, phy_dwc3);
-+ platform_set_drvdata(pdev, phy_dwc3);
-+
-+ phy_provider = devm_of_phy_provider_register(phy_dwc3->dev,
-+ of_phy_simple_xlate);
-+
-+ if (IS_ERR(phy_provider))
-+ return PTR_ERR(phy_provider);
-+
-+ return 0;
-+}
-+
-+static struct platform_driver qcom_ipq806x_usb_phy_driver = {
-+ .probe = qcom_ipq806x_usb_phy_probe,
-+ .driver = {
-+ .name = "qcom-ipq806x-usb-phy",
-+ .owner = THIS_MODULE,
-+ .of_match_table = qcom_ipq806x_usb_phy_table,
-+ },
-+};
-+
-+module_platform_driver(qcom_ipq806x_usb_phy_driver);
-+
-+MODULE_ALIAS("platform:phy-qcom-ipq806x-usb");
-+MODULE_LICENSE("GPL v2");
-+MODULE_AUTHOR("Andy Gross <agross@codeaurora.org>");
-+MODULE_AUTHOR("Ivan T. Ivanov <iivanov@mm-sol.com>");
-+MODULE_DESCRIPTION("DesignWare USB3 QCOM PHY driver");
projects / openwrt / openwrt.git / blobdiff