Port the HDMI PHY driver for Qualcomm MSM8260 / MSM8660 / APQ8060 platforms.
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@xxxxxxxxxx>
---
drivers/phy/qualcomm/Kconfig | 11 +
drivers/phy/qualcomm/Makefile | 1 +
drivers/phy/qualcomm/phy-qcom-hdmi-msm8x60.c | 353 +++++++++++++++++++
3 files changed, 365 insertions(+)
create mode 100644 drivers/phy/qualcomm/phy-qcom-hdmi-msm8x60.c
diff --git a/drivers/phy/qualcomm/Kconfig b/drivers/phy/qualcomm/Kconfig
index 838f93ad1168..a603d4777a02 100644
--- a/drivers/phy/qualcomm/Kconfig
+++ b/drivers/phy/qualcomm/Kconfig
@@ -42,6 +42,17 @@ config PHY_QCOM_IPQ806X_SATA
depends on OF
select GENERIC_PHY
+config PHY_QCOM_HDMI_MSM8X60
+ tristate "Qualcomm MSM8x60 HDMI PHY driver"
+ depends on ARCH_QCOM || COMPILE_TEST
+ depends on OF
+ depends on COMMON_CLK
+ default DRM_MSM_HDMI && ARCH_MSM8X60
+ select GENERIC_PHY
+ help
+ Enable this to support the Qualcomm HDMI PHY presend on MSM8260,
+ MSM8660 and APQ8060 platforms.
+
config PHY_QCOM_HDMI_MSM8960
tristate "Qualcomm MSM8960 HDMI PHY driver"
depends on ARCH_QCOM || COMPILE_TEST
diff --git a/drivers/phy/qualcomm/Makefile b/drivers/phy/qualcomm/Makefile
index 6d7d76c7fee0..cbc730c074ad 100644
--- a/drivers/phy/qualcomm/Makefile
+++ b/drivers/phy/qualcomm/Makefile
@@ -4,6 +4,7 @@ obj-$(CONFIG_PHY_QCOM_APQ8064_SATA) += phy-qcom-apq8064-sata.o
obj-$(CONFIG_PHY_QCOM_EDP) += phy-qcom-edp.o
obj-$(CONFIG_PHY_QCOM_IPQ4019_USB) += phy-qcom-ipq4019-usb.o
obj-$(CONFIG_PHY_QCOM_IPQ806X_SATA) += phy-qcom-ipq806x-sata.o
+obj-$(CONFIG_PHY_QCOM_HDMI_MSM8X60) += phy-qcom-hdmi-msm8x60.o
obj-$(CONFIG_PHY_QCOM_HDMI_MSM8960) += phy-qcom-hdmi-msm8960.o
obj-$(CONFIG_PHY_QCOM_PCIE2) += phy-qcom-pcie2.o
diff --git a/drivers/phy/qualcomm/phy-qcom-hdmi-msm8x60.c b/drivers/phy/qualcomm/phy-qcom-hdmi-msm8x60.c
new file mode 100644
index 000000000000..a5bacab80909
--- /dev/null
+++ b/drivers/phy/qualcomm/phy-qcom-hdmi-msm8x60.c
@@ -0,0 +1,353 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (C) 2013 Red Hat
+ * Author: Rob Clark <robdclark@xxxxxxxxx>
+ * Copyright (c) 2023, Linaro Ltd.
+ */
+
+#include <linux/bitfield.h>
+#include <linux/clk.h>
+#include <linux/delay.h>
+#include <linux/iopoll.h>
+#include <linux/of_device.h>
+#include <linux/phy/phy.h>
+#include <linux/platform_device.h>
+#include <linux/regulator/consumer.h>
+
+#define REG_HDMI_8x60_PHY_REG0 0x00000000
+#define HDMI_8x60_PHY_REG0_DESER_DEL_CTRL__MASK 0x0000001c
+
+#define REG_HDMI_8x60_PHY_REG1 0x00000004
+#define HDMI_8x60_PHY_REG1_DTEST_MUX_SEL__MASK 0x000000f0
+#define HDMI_8x60_PHY_REG1_OUTVOL_SWING_CTRL__MASK 0x0000000f
+
+#define REG_HDMI_8x60_PHY_REG2 0x00000008
+#define HDMI_8x60_PHY_REG2_PD_DESER 0x00000001
+#define HDMI_8x60_PHY_REG2_PD_DRIVE_1 0x00000002
+#define HDMI_8x60_PHY_REG2_PD_DRIVE_2 0x00000004
+#define HDMI_8x60_PHY_REG2_PD_DRIVE_3 0x00000008
+#define HDMI_8x60_PHY_REG2_PD_DRIVE_4 0x00000010
+#define HDMI_8x60_PHY_REG2_PD_PLL 0x00000020
+#define HDMI_8x60_PHY_REG2_PD_PWRGEN 0x00000040
+#define HDMI_8x60_PHY_REG2_RCV_SENSE_EN 0x00000080
+
+#define REG_HDMI_8x60_PHY_REG3 0x0000000c
+#define HDMI_8x60_PHY_REG3_PLL_ENABLE 0x00000001
+
+#define REG_HDMI_8x60_PHY_REG4 0x00000010
+
+#define REG_HDMI_8x60_PHY_REG5 0x00000014
+
+#define REG_HDMI_8x60_PHY_REG6 0x00000018
+
+#define REG_HDMI_8x60_PHY_REG7 0x0000001c
+
+#define REG_HDMI_8x60_PHY_REG8 0x00000020
+
+#define REG_HDMI_8x60_PHY_REG9 0x00000024
+
+#define REG_HDMI_8x60_PHY_REG10 0x00000028
+
+#define REG_HDMI_8x60_PHY_REG11 0x0000002c
+
+#define REG_HDMI_8x60_PHY_REG12 0x00000030
+#define HDMI_8x60_PHY_REG12_RETIMING_EN 0x00000001
+#define HDMI_8x60_PHY_REG12_PLL_LOCK_DETECT_EN 0x00000002
+#define HDMI_8x60_PHY_REG12_FORCE_LOCK 0x00000010
+
+struct qcom_hdmi_8x60_phy {
+ struct device *dev;
+ struct phy *phy;
+ void __iomem *phy_reg;
+
+ struct phy_configure_opts_hdmi hdmi_opts;
+
+ struct clk *iface_clk;
+ struct regulator *vdda;
+};
+
+static inline void hdmi_phy_write(struct qcom_hdmi_8x60_phy *phy, int offset,
+ u32 data)
+{
+ writel(data, phy->phy_reg + offset);
+}
+
+static inline u32 hdmi_phy_read(struct qcom_hdmi_8x60_phy *phy, int offset)
+{
+ return readl(phy->phy_reg + offset);
+}
+
+static int qcom_hdmi_8x60_phy_power_on(struct phy *phy)
+{
+ struct qcom_hdmi_8x60_phy *hdmi_phy = phy_get_drvdata(phy);
+ unsigned long pixclock = hdmi_phy->hdmi_opts.pixel_clk_rate;
+
+ /* De-serializer delay D/C for non-lbk mode: */
+ hdmi_phy_write(hdmi_phy, REG_HDMI_8x60_PHY_REG0,
+ FIELD_PREP(HDMI_8x60_PHY_REG0_DESER_DEL_CTRL__MASK, 3));
+
+ if (pixclock == 27000) {
+ /* video_format == HDMI_VFRMT_720x480p60_16_9 */
+ hdmi_phy_write(hdmi_phy, REG_HDMI_8x60_PHY_REG1,
+ FIELD_PREP(HDMI_8x60_PHY_REG1_DTEST_MUX_SEL__MASK, 5) |
+ FIELD_PREP(HDMI_8x60_PHY_REG1_OUTVOL_SWING_CTRL__MASK, 3));
+ } else {
+ hdmi_phy_write(hdmi_phy, REG_HDMI_8x60_PHY_REG1,
+ FIELD_PREP(HDMI_8x60_PHY_REG1_DTEST_MUX_SEL__MASK, 5) |
+ FIELD_PREP(HDMI_8x60_PHY_REG1_OUTVOL_SWING_CTRL__MASK, 4));
+ }
+
+ /* No matter what, start from the power down mode: */
+ hdmi_phy_write(hdmi_phy, REG_HDMI_8x60_PHY_REG2,
+ HDMI_8x60_PHY_REG2_PD_PWRGEN |
+ HDMI_8x60_PHY_REG2_PD_PLL |
+ HDMI_8x60_PHY_REG2_PD_DRIVE_4 |
+ HDMI_8x60_PHY_REG2_PD_DRIVE_3 |
+ HDMI_8x60_PHY_REG2_PD_DRIVE_2 |
+ HDMI_8x60_PHY_REG2_PD_DRIVE_1 |
+ HDMI_8x60_PHY_REG2_PD_DESER);
+
+ /* Turn PowerGen on: */
+ hdmi_phy_write(hdmi_phy, REG_HDMI_8x60_PHY_REG2,
+ HDMI_8x60_PHY_REG2_PD_PLL |
+ HDMI_8x60_PHY_REG2_PD_DRIVE_4 |
+ HDMI_8x60_PHY_REG2_PD_DRIVE_3 |
+ HDMI_8x60_PHY_REG2_PD_DRIVE_2 |
+ HDMI_8x60_PHY_REG2_PD_DRIVE_1 |
+ HDMI_8x60_PHY_REG2_PD_DESER);
+
+ /* Turn PLL power on: */
+ hdmi_phy_write(hdmi_phy, REG_HDMI_8x60_PHY_REG2,
+ HDMI_8x60_PHY_REG2_PD_DRIVE_4 |
+ HDMI_8x60_PHY_REG2_PD_DRIVE_3 |
+ HDMI_8x60_PHY_REG2_PD_DRIVE_2 |
+ HDMI_8x60_PHY_REG2_PD_DRIVE_1 |
+ HDMI_8x60_PHY_REG2_PD_DESER);
+
+ /* Write to HIGH after PLL power down de-assert: */
+ hdmi_phy_write(hdmi_phy, REG_HDMI_8x60_PHY_REG3,
+ HDMI_8x60_PHY_REG3_PLL_ENABLE);
+
+ /* ASIC power on; PHY REG9 = 0 */
+ hdmi_phy_write(hdmi_phy, REG_HDMI_8x60_PHY_REG9, 0);
+
+ /* Enable PLL lock detect, PLL lock det will go high after lock
+ * Enable the re-time logic
+ */
+ hdmi_phy_write(hdmi_phy, REG_HDMI_8x60_PHY_REG12,
+ HDMI_8x60_PHY_REG12_RETIMING_EN |
+ HDMI_8x60_PHY_REG12_PLL_LOCK_DETECT_EN);
+
+ /* Drivers are on: */
+ hdmi_phy_write(hdmi_phy, REG_HDMI_8x60_PHY_REG2,
+ HDMI_8x60_PHY_REG2_PD_DESER);
+
+ /* If the RX detector is needed: */
+ hdmi_phy_write(hdmi_phy, REG_HDMI_8x60_PHY_REG2,
+ HDMI_8x60_PHY_REG2_RCV_SENSE_EN |
+ HDMI_8x60_PHY_REG2_PD_DESER);
+
+ hdmi_phy_write(hdmi_phy, REG_HDMI_8x60_PHY_REG4, 0);
+ hdmi_phy_write(hdmi_phy, REG_HDMI_8x60_PHY_REG5, 0);
+ hdmi_phy_write(hdmi_phy, REG_HDMI_8x60_PHY_REG6, 0);
+ hdmi_phy_write(hdmi_phy, REG_HDMI_8x60_PHY_REG7, 0);
+ hdmi_phy_write(hdmi_phy, REG_HDMI_8x60_PHY_REG8, 0);
+ hdmi_phy_write(hdmi_phy, REG_HDMI_8x60_PHY_REG9, 0);
+ hdmi_phy_write(hdmi_phy, REG_HDMI_8x60_PHY_REG10, 0);
+ hdmi_phy_write(hdmi_phy, REG_HDMI_8x60_PHY_REG11, 0);
+
+ /* If we want to use lock enable based on counting: */
+ hdmi_phy_write(hdmi_phy, REG_HDMI_8x60_PHY_REG12,
+ HDMI_8x60_PHY_REG12_RETIMING_EN |
+ HDMI_8x60_PHY_REG12_PLL_LOCK_DETECT_EN |
+ HDMI_8x60_PHY_REG12_FORCE_LOCK);
+
+ return 0;
+}
+
+static int qcom_hdmi_8x60_phy_power_off(struct phy *phy)
+{
+ struct qcom_hdmi_8x60_phy *hdmi_phy = phy_get_drvdata(phy);
+
+ /* Assert RESET PHY from controller */
+#if 0
+ hdmi_phy_write(hdmi_phy, REG_HDMI_PHY_CTRL,
+ HDMI_PHY_CTRL_SW_RESET);
+ udelay(10);
+ /* De-assert RESET PHY from controller */
+ hdmi_phy_write(hdmi_phy, REG_HDMI_PHY_CTRL, 0);
+#endif
+ /* Turn off Driver */
+ hdmi_phy_write(hdmi_phy, REG_HDMI_8x60_PHY_REG2,
+ HDMI_8x60_PHY_REG2_PD_DRIVE_4 |
+ HDMI_8x60_PHY_REG2_PD_DRIVE_3 |
+ HDMI_8x60_PHY_REG2_PD_DRIVE_2 |
+ HDMI_8x60_PHY_REG2_PD_DRIVE_1 |
+ HDMI_8x60_PHY_REG2_PD_DESER);
+ udelay(10);
+ /* Disable PLL */
+ hdmi_phy_write(hdmi_phy, REG_HDMI_8x60_PHY_REG3, 0);
+ /* Power down PHY, but keep RX-sense: */
+ hdmi_phy_write(hdmi_phy, REG_HDMI_8x60_PHY_REG2,
+ HDMI_8x60_PHY_REG2_RCV_SENSE_EN |
+ HDMI_8x60_PHY_REG2_PD_PWRGEN |
+ HDMI_8x60_PHY_REG2_PD_PLL |
+ HDMI_8x60_PHY_REG2_PD_DRIVE_4 |
+ HDMI_8x60_PHY_REG2_PD_DRIVE_3 |
+ HDMI_8x60_PHY_REG2_PD_DRIVE_2 |
+ HDMI_8x60_PHY_REG2_PD_DRIVE_1 |
+ HDMI_8x60_PHY_REG2_PD_DESER);
+
+ return 0;
+}
+
+static int qcom_hdmi_8x60_phy_init(struct phy *phy)
+{
+ struct qcom_hdmi_8x60_phy *hdmi_phy = phy_get_drvdata(phy);
+
+ return pm_runtime_resume_and_get(hdmi_phy->dev);
+}
+
+static int qcom_hdmi_8x60_phy_exit(struct phy *phy)
+{
+ struct qcom_hdmi_8x60_phy *hdmi_phy = phy_get_drvdata(phy);
+
+ pm_runtime_put_noidle(hdmi_phy->dev);
+
+ return 0;
+}
+
+static int qcom_hdmi_8x60_phy_configure(struct phy *phy, union phy_configure_opts *opts)
+{
+ const struct phy_configure_opts_hdmi *hdmi_opts = &opts->hdmi;
+ struct qcom_hdmi_8x60_phy *hdmi_phy = phy_get_drvdata(phy);
+ int ret = 0;
+
+ memcpy(&hdmi_phy->hdmi_opts, hdmi_opts, sizeof(*hdmi_opts));
+
+ return ret;
+}
+
+static int __maybe_unused qcom_hdmi_8x60_runtime_resume(struct device *dev)
+{
+ struct qcom_hdmi_8x60_phy *hdmi_phy = dev_get_drvdata(dev);
+ int ret;
+
+ ret = regulator_enable(hdmi_phy->vdda);
+ if (ret)
+ return ret;
+
+ ret = clk_prepare_enable(hdmi_phy->iface_clk);
+ if (ret)
+ goto out_disable_supplies;
+
+ return 0;
+
+out_disable_supplies:
+ regulator_disable(hdmi_phy->vdda);
+
+ return ret;
+}
+
+static int __maybe_unused qcom_hdmi_8x60_runtime_suspend(struct device *dev)
+{
+ struct qcom_hdmi_8x60_phy *hdmi_phy = dev_get_drvdata(dev);
+
+ clk_disable_unprepare(hdmi_phy->iface_clk);
+ regulator_disable(hdmi_phy->vdda);
+
+ return 0;
+}
+
+static const struct phy_ops qcom_hdmi_8x60_phy_ops = {
+ .init = qcom_hdmi_8x60_phy_init,
+ .configure = qcom_hdmi_8x60_phy_configure,
+ .power_on = qcom_hdmi_8x60_phy_power_on,
+ .power_off = qcom_hdmi_8x60_phy_power_off,
+ .exit = qcom_hdmi_8x60_phy_exit,
+ .owner = THIS_MODULE,
+};
+
+static int qcom_hdmi_8x60_probe(struct platform_device *pdev)
+{
+ struct phy_provider *phy_provider;
+ struct device *dev = &pdev->dev;
+ struct qcom_hdmi_8x60_phy *hdmi_phy;
+ int ret;
+
+ hdmi_phy = devm_kzalloc(dev, sizeof(*hdmi_phy), GFP_KERNEL);
+ if (!hdmi_phy)
+ return -ENOMEM;
+
+ hdmi_phy->dev = dev;
+
+ hdmi_phy->phy_reg = devm_platform_ioremap_resource(pdev, 0);
+ if (IS_ERR(hdmi_phy->phy_reg))
+ return PTR_ERR(hdmi_phy->phy_reg);
+
+ hdmi_phy->iface_clk = devm_clk_get(dev, "slave_iface");
+ if (IS_ERR(hdmi_phy->iface_clk)) {
+ ret = PTR_ERR(hdmi_phy->iface_clk);
+ return ret;
+ }
+
+ hdmi_phy->vdda = devm_regulator_get(dev, "core-vdda");
+ if (IS_ERR(hdmi_phy->vdda)) {
+ ret = PTR_ERR(hdmi_phy->vdda);
+ return ret;
+ }
+
+ platform_set_drvdata(pdev, hdmi_phy);
+
+ ret = devm_pm_runtime_enable(&pdev->dev);
+ if (ret)
+ return ret;
+
+ ret = pm_runtime_resume_and_get(&pdev->dev);
+ if (ret)
+ return ret;
+
+ hdmi_phy->phy = devm_phy_create(dev, pdev->dev.of_node, &qcom_hdmi_8x60_phy_ops);
+ if (IS_ERR(hdmi_phy->phy)) {
+ ret = PTR_ERR(hdmi_phy->phy);
+ goto err;
+ }
+
+ phy_set_drvdata(hdmi_phy->phy, hdmi_phy);
+
+ phy_provider = devm_of_phy_provider_register(dev, of_phy_simple_xlate);
+ pm_runtime_put_noidle(&pdev->dev);
+ return PTR_ERR_OR_ZERO(phy_provider);
+
+err:
+ pm_runtime_put_noidle(&pdev->dev);
+ return ret;
+}
+
+static const struct of_device_id qcom_hdmi_8x60_of_match_table[] = {
+ {
+ .compatible = "qcom,hdmi-phy-8x60",
+ },
+ { },
+};
+MODULE_DEVICE_TABLE(of, qcom_hdmi_8x60_of_match_table);
+
+DEFINE_RUNTIME_DEV_PM_OPS(qcom_hdmi_8x60_pm_ops,
+ qcom_hdmi_8x60_runtime_suspend,
+ qcom_hdmi_8x60_runtime_resume,
+ NULL);
+
+static struct platform_driver qcom_hdmi_8x60_driver = {
+ .probe = qcom_hdmi_8x60_probe,
+ .driver = {
+ .name = "qcom-8x60-hdmi-phy",
+ .of_match_table = qcom_hdmi_8x60_of_match_table,
+ .pm = &qcom_hdmi_8x60_pm_ops,
+ },
+};
+
+module_platform_driver(qcom_hdmi_8x60_driver);
+
+MODULE_AUTHOR("Dmitry Baryshkov <dmitry.baryshkov@xxxxxxxxxx>");
+MODULE_DESCRIPTION("Qualcomm MSM8x60 HDMI PHY driver");
+MODULE_LICENSE("GPL");
--
2.39.2
