[PATCH v3 02/15] phy: qualcomm: add QMP HDMI PHY driver
Dmitry Baryshkov
dmitry.baryshkov at linaro.org
Thu Sep 28 04:16:16 PDT 2023
Port Qualcomm QMP HDMI PHY to the generic PHY framework. Split the
generic part and the msm8996 part. When adding support for msm8992/4 and
msm8998 (which also employ QMP for HDMI PHY), one will have to provide
the PLL programming part only.
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov at linaro.org>
---
drivers/phy/qualcomm/Kconfig | 7 +
drivers/phy/qualcomm/Makefile | 5 +
drivers/phy/qualcomm/phy-qcom-qmp-hdmi-base.c | 184 ++++++++
.../phy/qualcomm/phy-qcom-qmp-hdmi-msm8996.c | 441 ++++++++++++++++++
drivers/phy/qualcomm/phy-qcom-qmp-hdmi.h | 75 +++
5 files changed, 712 insertions(+)
create mode 100644 drivers/phy/qualcomm/phy-qcom-qmp-hdmi-base.c
create mode 100644 drivers/phy/qualcomm/phy-qcom-qmp-hdmi-msm8996.c
create mode 100644 drivers/phy/qualcomm/phy-qcom-qmp-hdmi.h
diff --git a/drivers/phy/qualcomm/Kconfig b/drivers/phy/qualcomm/Kconfig
index d891058b7c39..127fb2f59a57 100644
--- a/drivers/phy/qualcomm/Kconfig
+++ b/drivers/phy/qualcomm/Kconfig
@@ -68,6 +68,13 @@ config PHY_QCOM_QMP_COMBO
Enable this to support the QMP Combo PHY transceiver that is used
with USB3 and DisplayPort controllers on Qualcomm chips.
+config PHY_QCOM_QMP_HDMI
+ tristate "Qualcomm QMP HDMI PHY Driver"
+ default PHY_QCOM_QMP && DRM_MSM_HDMI
+ help
+ Enable this to support the QMP HDMI PHY transceiver that is used
+ with HDMI output on Qualcomm MSM8996 chips.
+
config PHY_QCOM_QMP_PCIE
tristate "Qualcomm QMP PCIe PHY Driver"
depends on PCI || COMPILE_TEST
diff --git a/drivers/phy/qualcomm/Makefile b/drivers/phy/qualcomm/Makefile
index ffd609ac6233..c09828eccc89 100644
--- a/drivers/phy/qualcomm/Makefile
+++ b/drivers/phy/qualcomm/Makefile
@@ -8,12 +8,17 @@ obj-$(CONFIG_PHY_QCOM_M31_USB) += phy-qcom-m31.o
obj-$(CONFIG_PHY_QCOM_PCIE2) += phy-qcom-pcie2.o
obj-$(CONFIG_PHY_QCOM_QMP_COMBO) += phy-qcom-qmp-combo.o
+obj-$(CONFIG_PHY_QCOM_QMP_HDMI) += phy-qcom-qmp-hdmi.o
obj-$(CONFIG_PHY_QCOM_QMP_PCIE) += phy-qcom-qmp-pcie.o
obj-$(CONFIG_PHY_QCOM_QMP_PCIE_8996) += phy-qcom-qmp-pcie-msm8996.o
obj-$(CONFIG_PHY_QCOM_QMP_UFS) += phy-qcom-qmp-ufs.o
obj-$(CONFIG_PHY_QCOM_QMP_USB) += phy-qcom-qmp-usb.o
obj-$(CONFIG_PHY_QCOM_QMP_USB_LEGACY) += phy-qcom-qmp-usb-legacy.o
+phy-qcom-qmp-hdmi-y := \
+ phy-qcom-qmp-hdmi-base.o \
+ phy-qcom-qmp-hdmi-msm8996.o \
+
obj-$(CONFIG_PHY_QCOM_QUSB2) += phy-qcom-qusb2.o
obj-$(CONFIG_PHY_QCOM_SNPS_EUSB2) += phy-qcom-snps-eusb2.o
obj-$(CONFIG_PHY_QCOM_EUSB2_REPEATER) += phy-qcom-eusb2-repeater.o
diff --git a/drivers/phy/qualcomm/phy-qcom-qmp-hdmi-base.c b/drivers/phy/qualcomm/phy-qcom-qmp-hdmi-base.c
new file mode 100644
index 000000000000..08132b3f82af
--- /dev/null
+++ b/drivers/phy/qualcomm/phy-qcom-qmp-hdmi-base.c
@@ -0,0 +1,184 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (c) 2016, The Linux Foundation. All rights reserved.
+ * Copyright (c) 2023, Linaro Ltd.
+ */
+
+#include <linux/of_device.h>
+#include <linux/phy/phy.h>
+#include <linux/platform_device.h>
+
+#include "phy-qcom-qmp-hdmi.h"
+
+int qmp_hdmi_phy_init(struct phy *phy)
+{
+ struct qmp_hdmi_phy *hdmi_phy = phy_get_drvdata(phy);
+
+ return pm_runtime_resume_and_get(hdmi_phy->dev);
+}
+
+int qmp_hdmi_phy_configure(struct phy *phy, union phy_configure_opts *opts)
+{
+ const struct phy_configure_opts_hdmi *hdmi_opts = &opts->hdmi;
+ struct qmp_hdmi_phy *hdmi_phy = phy_get_drvdata(phy);
+ int ret = 0;
+
+ memcpy(&hdmi_phy->hdmi_opts, hdmi_opts, sizeof(*hdmi_opts));
+
+ return ret;
+}
+
+int qmp_hdmi_phy_exit(struct phy *phy)
+{
+ struct qmp_hdmi_phy *hdmi_phy = phy_get_drvdata(phy);
+
+ pm_runtime_put_noidle(hdmi_phy->dev);
+
+ return 0;
+}
+
+static int __maybe_unused qmp_hdmi_runtime_resume(struct device *dev)
+{
+ struct qmp_hdmi_phy *hdmi_phy = dev_get_drvdata(dev);
+ int ret;
+
+ ret = regulator_bulk_enable(ARRAY_SIZE(hdmi_phy->supplies), hdmi_phy->supplies);
+ if (ret)
+ return ret;
+
+ ret = clk_bulk_prepare_enable(ARRAY_SIZE(hdmi_phy->clks), hdmi_phy->clks);
+ if (ret)
+ goto out_disable_supplies;
+
+ return 0;
+
+out_disable_supplies:
+ regulator_bulk_disable(ARRAY_SIZE(hdmi_phy->supplies), hdmi_phy->supplies);
+
+ return ret;
+}
+
+static int __maybe_unused qmp_hdmi_runtime_suspend(struct device *dev)
+{
+ struct qmp_hdmi_phy *hdmi_phy = dev_get_drvdata(dev);
+
+ clk_bulk_disable_unprepare(ARRAY_SIZE(hdmi_phy->clks), hdmi_phy->clks);
+ regulator_bulk_disable(ARRAY_SIZE(hdmi_phy->supplies), hdmi_phy->supplies);
+
+ return 0;
+}
+
+static int qmp_hdmi_probe(struct platform_device *pdev)
+{
+ struct clk_init_data init = {
+ .name = "hdmipll",
+ .parent_data = (const struct clk_parent_data[]) {
+ { .fw_name = "xo", .name = "xo_board" },
+ },
+ .flags = CLK_GET_RATE_NOCACHE,
+ .num_parents = 1,
+ };
+ const struct qmp_hdmi_cfg *cfg = of_device_get_match_data(&pdev->dev);
+ struct phy_provider *phy_provider;
+ struct device *dev = &pdev->dev;
+ struct qmp_hdmi_phy *hdmi_phy;
+ int ret, i;
+
+ hdmi_phy = devm_kzalloc(dev, sizeof(*hdmi_phy), GFP_KERNEL);
+ if (!hdmi_phy)
+ return -ENOMEM;
+
+ hdmi_phy->dev = dev;
+
+ hdmi_phy->serdes = devm_platform_ioremap_resource(pdev, 0);
+ if (IS_ERR(hdmi_phy->serdes))
+ return PTR_ERR(hdmi_phy->serdes);
+
+ for (i = 0; i < HDMI_NUM_TX_CHANNEL; i++) {
+ hdmi_phy->tx[i] = devm_platform_ioremap_resource(pdev, 1 + i);
+ if (IS_ERR(hdmi_phy->tx[i]))
+ return PTR_ERR(hdmi_phy->tx[i]);
+ }
+
+ hdmi_phy->phy_reg = devm_platform_ioremap_resource(pdev, 5);
+ if (IS_ERR(hdmi_phy->phy_reg))
+ return PTR_ERR(hdmi_phy->phy_reg);
+
+ hdmi_phy->clks[0].id = "iface";
+ hdmi_phy->clks[1].id = "ref";
+ ret = devm_clk_bulk_get(dev, ARRAY_SIZE(hdmi_phy->clks), hdmi_phy->clks);
+ if (ret)
+ return ret;
+
+ hdmi_phy->supplies[0].supply = "vddio";
+ hdmi_phy->supplies[0].init_load_uA = 100000;
+ hdmi_phy->supplies[1].supply = "vcca";
+ hdmi_phy->supplies[1].init_load_uA = 10000;
+ ret = devm_regulator_bulk_get(dev, ARRAY_SIZE(hdmi_phy->supplies), hdmi_phy->supplies);
+ if (ret)
+ 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;
+
+ init.ops = cfg->pll_ops;
+ hdmi_phy->pll_hw.init = &init;
+ ret = devm_clk_hw_register(hdmi_phy->dev, &hdmi_phy->pll_hw);
+ if (ret)
+ goto err;
+
+ ret = devm_of_clk_add_hw_provider(hdmi_phy->dev, of_clk_hw_simple_get, &hdmi_phy->pll_hw);
+ if (ret)
+ goto err;
+
+ hdmi_phy->phy = devm_phy_create(dev, pdev->dev.of_node, cfg->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 qmp_hdmi_of_match_table[] = {
+ {
+ .compatible = "qcom,hdmi-phy-8996", .data = &qmp_hdmi_8996_cfg,
+ },
+ { },
+};
+MODULE_DEVICE_TABLE(of, qmp_hdmi_of_match_table);
+
+DEFINE_RUNTIME_DEV_PM_OPS(qmp_hdmi_pm_ops,
+ qmp_hdmi_runtime_suspend,
+ qmp_hdmi_runtime_resume,
+ NULL);
+
+static struct platform_driver qmp_hdmi_driver = {
+ .probe = qmp_hdmi_probe,
+ .driver = {
+ .name = "qcom-qmp-hdmi-phy",
+ .of_match_table = qmp_hdmi_of_match_table,
+ .pm = &qmp_hdmi_pm_ops,
+ },
+};
+
+module_platform_driver(qmp_hdmi_driver);
+
+MODULE_AUTHOR("Dmitry Baryshkov <dmitry.baryshkov at linaro.org>");
+MODULE_DESCRIPTION("Qualcomm QMP HDMI PHY driver");
+MODULE_LICENSE("GPL");
diff --git a/drivers/phy/qualcomm/phy-qcom-qmp-hdmi-msm8996.c b/drivers/phy/qualcomm/phy-qcom-qmp-hdmi-msm8996.c
new file mode 100644
index 000000000000..27ffa70d0faa
--- /dev/null
+++ b/drivers/phy/qualcomm/phy-qcom-qmp-hdmi-msm8996.c
@@ -0,0 +1,441 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (c) 2016, The Linux Foundation. All rights reserved.
+ * Copyright (c) 2023, Linaro Ltd.
+ */
+
+#include <linux/delay.h>
+#include <linux/iopoll.h>
+#include <linux/phy/phy.h>
+
+#include "phy-qcom-qmp-hdmi.h"
+#include "phy-qcom-qmp-qserdes-com.h"
+#include "phy-qcom-qmp-qserdes-txrx.h"
+
+#define HDMI_VCO_MAX_FREQ 12000000000UL
+#define HDMI_VCO_MIN_FREQ 8000000000UL
+
+#define HDMI_PCLK_MAX_FREQ 600000000UL
+#define HDMI_PCLK_MIN_FREQ 25000000UL
+
+#define HDMI_HIGH_FREQ_BIT_CLK_THRESHOLD 3400000000UL
+#define HDMI_DIG_FREQ_BIT_CLK_THRESHOLD 1500000000UL
+#define HDMI_MID_FREQ_BIT_CLK_THRESHOLD 750000000UL
+#define HDMI_DEFAULT_REF_CLOCK 19200000
+#define HDMI_PLL_CMP_CNT 1024
+
+#define HDMI_PLL_POLL_MAX_READS 100
+#define HDMI_PLL_POLL_TIMEOUT_US 150
+
+#define REG_HDMI_8996_PHY_CFG 0x00000000
+#define REG_HDMI_8996_PHY_PD_CTL 0x00000004
+#define REG_HDMI_8996_PHY_MODE 0x00000008
+#define REG_HDMI_8996_PHY_MISR_CLEAR 0x0000000c
+#define REG_HDMI_8996_PHY_TX0_TX1_BIST_CFG0 0x00000010
+#define REG_HDMI_8996_PHY_TX0_TX1_BIST_CFG1 0x00000014
+#define REG_HDMI_8996_PHY_TX0_TX1_PRBS_SEED_BYTE0 0x00000018
+#define REG_HDMI_8996_PHY_TX0_TX1_PRBS_SEED_BYTE1 0x0000001c
+#define REG_HDMI_8996_PHY_TX0_TX1_BIST_PATTERN0 0x00000020
+#define REG_HDMI_8996_PHY_TX0_TX1_BIST_PATTERN1 0x00000024
+#define REG_HDMI_8996_PHY_TX2_TX3_BIST_CFG0 0x00000028
+#define REG_HDMI_8996_PHY_TX2_TX3_BIST_CFG1 0x0000002c
+#define REG_HDMI_8996_PHY_TX2_TX3_PRBS_SEED_BYTE0 0x00000030
+#define REG_HDMI_8996_PHY_TX2_TX3_PRBS_SEED_BYTE1 0x00000034
+#define REG_HDMI_8996_PHY_TX2_TX3_BIST_PATTERN0 0x00000038
+#define REG_HDMI_8996_PHY_TX2_TX3_BIST_PATTERN1 0x0000003c
+#define REG_HDMI_8996_PHY_DEBUG_BUS_SEL 0x00000040
+#define REG_HDMI_8996_PHY_TXCAL_CFG0 0x00000044
+#define REG_HDMI_8996_PHY_TXCAL_CFG1 0x00000048
+#define REG_HDMI_8996_PHY_TX0_TX1_LANE_CTL 0x0000004c
+#define REG_HDMI_8996_PHY_TX2_TX3_LANE_CTL 0x00000050
+#define REG_HDMI_8996_PHY_LANE_BIST_CONFIG 0x00000054
+#define REG_HDMI_8996_PHY_CLOCK 0x00000058
+#define REG_HDMI_8996_PHY_MISC1 0x0000005c
+#define REG_HDMI_8996_PHY_MISC2 0x00000060
+#define REG_HDMI_8996_PHY_TX0_TX1_BIST_STATUS0 0x00000064
+#define REG_HDMI_8996_PHY_TX0_TX1_BIST_STATUS1 0x00000068
+#define REG_HDMI_8996_PHY_TX0_TX1_BIST_STATUS2 0x0000006c
+#define REG_HDMI_8996_PHY_TX2_TX3_BIST_STATUS0 0x00000070
+#define REG_HDMI_8996_PHY_TX2_TX3_BIST_STATUS1 0x00000074
+#define REG_HDMI_8996_PHY_TX2_TX3_BIST_STATUS2 0x00000078
+#define REG_HDMI_8996_PHY_PRE_MISR_STATUS0 0x0000007c
+#define REG_HDMI_8996_PHY_PRE_MISR_STATUS1 0x00000080
+#define REG_HDMI_8996_PHY_PRE_MISR_STATUS2 0x00000084
+#define REG_HDMI_8996_PHY_PRE_MISR_STATUS3 0x00000088
+#define REG_HDMI_8996_PHY_POST_MISR_STATUS0 0x0000008c
+#define REG_HDMI_8996_PHY_POST_MISR_STATUS1 0x00000090
+#define REG_HDMI_8996_PHY_POST_MISR_STATUS2 0x00000094
+#define REG_HDMI_8996_PHY_POST_MISR_STATUS3 0x00000098
+#define REG_HDMI_8996_PHY_STATUS 0x0000009c
+#define REG_HDMI_8996_PHY_MISC3_STATUS 0x000000a0
+#define REG_HDMI_8996_PHY_MISC4_STATUS 0x000000a4
+#define REG_HDMI_8996_PHY_DEBUG_BUS0 0x000000a8
+#define REG_HDMI_8996_PHY_DEBUG_BUS1 0x000000ac
+#define REG_HDMI_8996_PHY_DEBUG_BUS2 0x000000b0
+#define REG_HDMI_8996_PHY_DEBUG_BUS3 0x000000b4
+#define REG_HDMI_8996_PHY_PHY_REVISION_ID0 0x000000b8
+#define REG_HDMI_8996_PHY_PHY_REVISION_ID1 0x000000bc
+#define REG_HDMI_8996_PHY_PHY_REVISION_ID2 0x000000c0
+#define REG_HDMI_8996_PHY_PHY_REVISION_ID3 0x000000c4
+
+struct qmp_hdmi_8996_post_divider {
+ u64 vco_freq;
+ int hsclk_divsel;
+ int vco_ratio;
+ int tx_band_sel;
+};
+
+static inline u32 qmp_hdmi_8996_pll_get_pll_cmp(u64 fdata, unsigned long ref_clk)
+{
+ u64 dividend = HDMI_PLL_CMP_CNT * fdata;
+ u32 divisor = ref_clk * 10;
+ u32 rem;
+
+ rem = do_div(dividend, divisor);
+ if (rem > (divisor >> 1))
+ dividend++;
+
+ return dividend - 1;
+}
+
+static int qmp_hdmi_8996_pll_get_post_div(struct qmp_hdmi_8996_post_divider *pd, u64 bclk)
+{
+ int ratio[] = { 2, 3, 4, 5, 6, 9, 10, 12, 14, 15, 20, 21, 25, 28, 35 };
+ int hs_divsel[] = { 0, 4, 8, 12, 1, 5, 2, 9, 3, 13, 10, 7, 14, 11, 15 };
+ int tx_band_sel[] = { 0, 1, 2, 3 };
+ u64 vco_freq[60];
+ u64 vco, vco_optimal;
+ int half_rate_mode = 0;
+ int vco_optimal_index, vco_freq_index;
+ int i, j;
+
+retry:
+ vco_optimal = HDMI_VCO_MAX_FREQ;
+ vco_optimal_index = -1;
+ vco_freq_index = 0;
+ for (i = 0; i < 15; i++) {
+ for (j = 0; j < 4; j++) {
+ u32 ratio_mult = ratio[i] << tx_band_sel[j];
+
+ vco = bclk >> half_rate_mode;
+ vco *= ratio_mult;
+ vco_freq[vco_freq_index++] = vco;
+ }
+ }
+
+ for (i = 0; i < 60; i++) {
+ u64 vco_tmp = vco_freq[i];
+
+ if ((vco_tmp >= HDMI_VCO_MIN_FREQ) &&
+ (vco_tmp <= vco_optimal)) {
+ vco_optimal = vco_tmp;
+ vco_optimal_index = i;
+ }
+ }
+
+ if (vco_optimal_index == -1) {
+ if (!half_rate_mode) {
+ half_rate_mode = 1;
+ goto retry;
+ }
+
+ return -EINVAL;
+ }
+
+ pd->vco_freq = vco_optimal;
+ pd->tx_band_sel = tx_band_sel[vco_optimal_index % 4];
+ pd->vco_ratio = ratio[vco_optimal_index / 4];
+ pd->hsclk_divsel = hs_divsel[vco_optimal_index / 4];
+
+ return 0;
+}
+
+static int qmp_hdmi_8996_phy_set_rate(struct qmp_hdmi_phy *hdmi_phy)
+{
+ unsigned long parent_rate = HDMI_DEFAULT_REF_CLOCK;
+ unsigned long rate = hdmi_phy->hdmi_opts.pixel_clk_rate * 1000;
+ struct qmp_hdmi_8996_post_divider pd;
+ bool gen_ssc = false;
+ u64 bclk;
+ u64 dec_start;
+ u64 frac_start;
+ u64 fdata;
+ u32 pll_divisor;
+ u32 rem;
+ u32 integloop_gain;
+ u32 pll_cmp;
+ int i, ret;
+
+ bclk = ((u64)rate) * 10;
+ ret = qmp_hdmi_8996_pll_get_post_div(&pd, bclk);
+ if (ret) {
+ dev_err(hdmi_phy->dev, "PLL calculation failed\n");
+ return ret;
+ }
+
+ dec_start = pd.vco_freq;
+ pll_divisor = 4 * parent_rate;
+ do_div(dec_start, pll_divisor);
+
+ frac_start = pd.vco_freq * (1 << 20);
+
+ rem = do_div(frac_start, pll_divisor);
+ frac_start -= dec_start * (1 << 20);
+ if (rem > (pll_divisor >> 1))
+ frac_start++;
+
+ fdata = pd.vco_freq;
+ do_div(fdata, pd.vco_ratio);
+
+ pll_cmp = qmp_hdmi_8996_pll_get_pll_cmp(fdata, parent_rate);
+
+ /* Initially shut down PHY */
+ dev_dbg(hdmi_phy->dev, "Disabling PHY");
+ hdmi_phy_write(hdmi_phy, REG_HDMI_8996_PHY_PD_CTL, 0x0);
+ udelay(500);
+
+ /* Power up sequence */
+ hdmi_pll_write(hdmi_phy, QSERDES_COM_BG_CTRL, 0x04);
+
+ hdmi_phy_write(hdmi_phy, REG_HDMI_8996_PHY_PD_CTL, 0x1);
+ hdmi_pll_write(hdmi_phy, QSERDES_COM_RESETSM_CNTRL, 0x20);
+ hdmi_phy_write(hdmi_phy, REG_HDMI_8996_PHY_TX0_TX1_LANE_CTL, 0x0f);
+ hdmi_phy_write(hdmi_phy, REG_HDMI_8996_PHY_TX2_TX3_LANE_CTL, 0x0f);
+
+ hdmi_tx_chan_write(hdmi_phy, 0, QSERDES_TX_LANE_MODE, 0x43);
+ hdmi_tx_chan_write(hdmi_phy, 2, QSERDES_TX_LANE_MODE, 0x43);
+
+ hdmi_pll_write(hdmi_phy, QSERDES_COM_SYSCLK_BUF_ENABLE, 0x1e);
+ hdmi_pll_write(hdmi_phy, QSERDES_COM_BIAS_EN_CLKBUFLR_EN, 0x07);
+ hdmi_pll_write(hdmi_phy, QSERDES_COM_SYSCLK_EN_SEL, 0x37);
+ hdmi_pll_write(hdmi_phy, QSERDES_COM_SYS_CLK_CTRL, 0x02);
+ hdmi_pll_write(hdmi_phy, QSERDES_COM_CLK_ENABLE1, 0x0e);
+
+ if (frac_start != 0 || gen_ssc) {
+ hdmi_pll_write(hdmi_phy, QSERDES_COM_PLL_CCTRL_MODE0, 0x28);
+ hdmi_pll_write(hdmi_phy, QSERDES_COM_PLL_RCTRL_MODE0, 0x16);
+ hdmi_pll_write(hdmi_phy, QSERDES_COM_CP_CTRL_MODE0,
+ 11000000 / (parent_rate/ 20));
+ integloop_gain = (64 * parent_rate) / HDMI_DEFAULT_REF_CLOCK;
+ } else {
+ hdmi_pll_write(hdmi_phy, QSERDES_COM_PLL_CCTRL_MODE0, 0x01);
+ hdmi_pll_write(hdmi_phy, QSERDES_COM_PLL_RCTRL_MODE0, 0x10);
+ hdmi_pll_write(hdmi_phy, QSERDES_COM_CP_CTRL_MODE0, 0x23);
+ integloop_gain = (1022 * parent_rate) / (100 * 1000 * 1000);
+ }
+
+ /* Bypass VCO calibration */
+ if (bclk > HDMI_DIG_FREQ_BIT_CLK_THRESHOLD) {
+ hdmi_pll_write(hdmi_phy, QSERDES_COM_SVS_MODE_CLK_SEL, 1);
+ integloop_gain <<= 1;
+ } else {
+ hdmi_pll_write(hdmi_phy, QSERDES_COM_SVS_MODE_CLK_SEL, 2);
+ integloop_gain <<= 2;
+ }
+
+ integloop_gain = min_t(u32, integloop_gain, 2046);
+
+ hdmi_pll_write(hdmi_phy, QSERDES_COM_BG_TRIM, 0x0f);
+ hdmi_pll_write(hdmi_phy, QSERDES_COM_PLL_IVCO, 0x0f);
+ hdmi_pll_write(hdmi_phy, QSERDES_COM_VCO_TUNE_CTRL, 0);
+
+ hdmi_pll_write(hdmi_phy, QSERDES_COM_BG_CTRL, 0x06);
+
+ hdmi_pll_write(hdmi_phy, QSERDES_COM_CLK_SELECT, 0x30);
+ hdmi_pll_write(hdmi_phy, QSERDES_COM_HSCLK_SEL, 0x20 | pd.hsclk_divsel);
+ hdmi_pll_write(hdmi_phy, QSERDES_COM_LOCK_CMP_EN, 0x0);
+
+ hdmi_pll_write(hdmi_phy, QSERDES_COM_DEC_START_MODE0, dec_start);
+ hdmi_pll_write(hdmi_phy, QSERDES_COM_DIV_FRAC_START1_MODE0,
+ frac_start & 0xff);
+ hdmi_pll_write(hdmi_phy, QSERDES_COM_DIV_FRAC_START2_MODE0,
+ (frac_start >> 8) & 0xff);
+ hdmi_pll_write(hdmi_phy, QSERDES_COM_DIV_FRAC_START3_MODE0,
+ (frac_start >> 16) & 0xf);
+
+ hdmi_pll_write(hdmi_phy, QSERDES_COM_INTEGLOOP_GAIN0_MODE0,
+ integloop_gain & 0xff);
+ hdmi_pll_write(hdmi_phy, QSERDES_COM_INTEGLOOP_GAIN1_MODE0,
+ (integloop_gain >> 8) & 0xff);
+
+ hdmi_pll_write(hdmi_phy, QSERDES_COM_LOCK_CMP1_MODE0,
+ pll_cmp & 0xff);
+ hdmi_pll_write(hdmi_phy, QSERDES_COM_LOCK_CMP2_MODE0,
+ (pll_cmp >> 8) & 0xff);
+ hdmi_pll_write(hdmi_phy, QSERDES_COM_LOCK_CMP3_MODE0,
+ (pll_cmp >> 16) & 0x3);
+
+ hdmi_pll_write(hdmi_phy, QSERDES_COM_VCO_TUNE_MAP, 0x00);
+ hdmi_pll_write(hdmi_phy, QSERDES_COM_CORE_CLK_EN, 0x2c);
+ hdmi_pll_write(hdmi_phy, QSERDES_COM_CORECLK_DIV, 5);
+ hdmi_pll_write(hdmi_phy, QSERDES_COM_CMN_CONFIG, 0x02);
+
+ hdmi_pll_write(hdmi_phy, QSERDES_COM_RESCODE_DIV_NUM, 0x15);
+
+ /* TX lanes setup (TX 0/1/2/3) */
+ for (i = 0; i < HDMI_NUM_TX_CHANNEL; i++) {
+ hdmi_tx_chan_write(hdmi_phy, i, QSERDES_TX_CLKBUF_ENABLE, 0x03);
+ hdmi_tx_chan_write(hdmi_phy, i, QSERDES_TX_TX_BAND, pd.tx_band_sel + 4);
+ hdmi_tx_chan_write(hdmi_phy, i, QSERDES_TX_RESET_TSYNC_EN, 0x03);
+ hdmi_tx_chan_write(hdmi_phy, i, QSERDES_TX_VMODE_CTRL1, 0x00);
+ hdmi_tx_chan_write(hdmi_phy, i, QSERDES_TX_TX_DRV_LVL_OFFSET, 0x00);
+ hdmi_tx_chan_write(hdmi_phy, i, QSERDES_TX_RES_CODE_LANE_OFFSET, 0x00);
+ hdmi_tx_chan_write(hdmi_phy, i, QSERDES_TX_TRAN_DRVR_EMP_EN, 0x03);
+ hdmi_tx_chan_write(hdmi_phy, i, QSERDES_TX_PARRATE_REC_DETECT_IDLE_EN, 0x40);
+ hdmi_tx_chan_write(hdmi_phy, i, QSERDES_TX_HP_PD_ENABLES,
+ i != 3 ? 0xc : 0x3);
+ }
+
+ if (bclk > HDMI_HIGH_FREQ_BIT_CLK_THRESHOLD) {
+ for (i = 0; i < HDMI_NUM_TX_CHANNEL; i++) {
+ hdmi_tx_chan_write(hdmi_phy, i, QSERDES_TX_TX_DRV_LVL,
+ i != 3 ? 0x25 : 0x22);
+ hdmi_tx_chan_write(hdmi_phy, i, QSERDES_TX_TX_EMP_POST1_LVL,
+ i != 3 ? 0x23 : 0x27);
+ hdmi_tx_chan_write(hdmi_phy, i, QSERDES_TX_VMODE_CTRL2,
+ i != 3 ? 0x0d : 0x00);
+ }
+ } else if (bclk > HDMI_MID_FREQ_BIT_CLK_THRESHOLD) {
+ for (i = 0; i < HDMI_NUM_TX_CHANNEL; i++) {
+ hdmi_tx_chan_write(hdmi_phy, i, QSERDES_TX_TX_DRV_LVL, 0x25);
+ hdmi_tx_chan_write(hdmi_phy, i, QSERDES_TX_TX_EMP_POST1_LVL, 0x23);
+ hdmi_tx_chan_write(hdmi_phy, i, QSERDES_TX_VMODE_CTRL2,
+ i != 3 ? 0x0d : 0x00);
+ }
+ } else {
+ for (i = 0; i < HDMI_NUM_TX_CHANNEL; i++) {
+ hdmi_tx_chan_write(hdmi_phy, i, QSERDES_TX_TX_DRV_LVL, 0x20);
+ hdmi_tx_chan_write(hdmi_phy, i, QSERDES_TX_TX_EMP_POST1_LVL, 0x20);
+ hdmi_tx_chan_write(hdmi_phy, i, QSERDES_TX_VMODE_CTRL2, 0x0e);
+ }
+ }
+
+ if (bclk > HDMI_HIGH_FREQ_BIT_CLK_THRESHOLD)
+ hdmi_phy_write(hdmi_phy, REG_HDMI_8996_PHY_MODE, 0x10);
+ else
+ hdmi_phy_write(hdmi_phy, REG_HDMI_8996_PHY_MODE, 0x00);
+ hdmi_phy_write(hdmi_phy, REG_HDMI_8996_PHY_PD_CTL, 0x1f);
+
+ return 0;
+}
+
+static int qmp_hdmi_8996_phy_power_on(struct phy *phy)
+{
+ struct qmp_hdmi_phy *hdmi_phy = phy_get_drvdata(phy);
+ u32 status;
+ int i, ret = 0;
+
+ ret = qmp_hdmi_8996_phy_set_rate(hdmi_phy);
+ if (ret) {
+ dev_err(hdmi_phy->dev, "Setting pixel clock rate failed\n");
+ return ret;
+ }
+
+ hdmi_phy_write(hdmi_phy, REG_HDMI_8996_PHY_CFG, 0x1);
+ udelay(100);
+
+ hdmi_phy_write(hdmi_phy, REG_HDMI_8996_PHY_CFG, 0x19);
+ udelay(100);
+
+ ret = readl_poll_timeout(hdmi_phy->serdes + QSERDES_COM_C_READY_STATUS,
+ status, status & BIT(0),
+ HDMI_PLL_POLL_TIMEOUT_US,
+ HDMI_PLL_POLL_MAX_READS * HDMI_PLL_POLL_TIMEOUT_US);
+
+ if (ret) {
+ dev_warn(hdmi_phy->dev, "HDMI PLL is not locked\n");
+ return ret;
+ }
+
+ for (i = 0; i < HDMI_NUM_TX_CHANNEL; i++)
+ hdmi_tx_chan_write(hdmi_phy, i,
+ QSERDES_TX_HIGHZ_TRANSCEIVEREN_BIAS_DRVR_EN,
+ 0x6f);
+
+ /* Disable SSC */
+ hdmi_pll_write(hdmi_phy, QSERDES_COM_SSC_PER1, 0x0);
+ hdmi_pll_write(hdmi_phy, QSERDES_COM_SSC_PER2, 0x0);
+ hdmi_pll_write(hdmi_phy, QSERDES_COM_SSC_STEP_SIZE1, 0x0);
+ hdmi_pll_write(hdmi_phy, QSERDES_COM_SSC_STEP_SIZE2, 0x0);
+ hdmi_pll_write(hdmi_phy, QSERDES_COM_SSC_EN_CENTER, 0x2);
+
+ ret = readl_poll_timeout(hdmi_phy->phy_reg + REG_HDMI_8996_PHY_STATUS,
+ status, status & BIT(0),
+ HDMI_PLL_POLL_TIMEOUT_US,
+ HDMI_PLL_POLL_MAX_READS * HDMI_PLL_POLL_TIMEOUT_US);
+ if (ret) {
+ dev_warn(hdmi_phy->dev, "HDMI PLL is not locked\n");
+ return ret;
+ }
+
+ /* Restart the retiming buffer */
+ hdmi_phy_write(hdmi_phy, REG_HDMI_8996_PHY_CFG, 0x18);
+ udelay(1);
+ hdmi_phy_write(hdmi_phy, REG_HDMI_8996_PHY_CFG, 0x19);
+
+ return 0;
+}
+
+static int qmp_hdmi_8996_phy_power_off(struct phy *phy)
+{
+ struct qmp_hdmi_phy *hdmi_phy = phy_get_drvdata(phy);
+
+ hdmi_phy_write(hdmi_phy, REG_HDMI_8996_PHY_CFG, 0x6);
+ usleep_range(100, 150);
+
+ return 0;
+}
+
+static long qmp_hdmi_8996_pll_round_rate(struct clk_hw *hw,
+ unsigned long rate,
+ unsigned long *parent_rate)
+{
+ return clamp(rate, HDMI_PCLK_MIN_FREQ, HDMI_PCLK_MAX_FREQ);
+}
+
+static unsigned long qmp_hdmi_8996_pll_recalc_rate(struct clk_hw *hw,
+ unsigned long parent_rate)
+{
+ struct qmp_hdmi_phy *phy = hw_clk_to_pll(hw);
+ u32 cmp1, cmp2, cmp3, pll_cmp;
+
+ cmp1 = hdmi_pll_read(phy, QSERDES_COM_LOCK_CMP1_MODE0);
+ cmp2 = hdmi_pll_read(phy, QSERDES_COM_LOCK_CMP2_MODE0);
+ cmp3 = hdmi_pll_read(phy, QSERDES_COM_LOCK_CMP3_MODE0);
+
+ pll_cmp = cmp1 | (cmp2 << 8) | (cmp3 << 16);
+
+ return mult_frac(pll_cmp + 1, parent_rate, HDMI_PLL_CMP_CNT);
+}
+
+static int qmp_hdmi_8996_pll_is_enabled(struct clk_hw *hw)
+{
+ struct qmp_hdmi_phy *phy = hw_clk_to_pll(hw);
+ u32 status;
+ int pll_locked;
+
+ status = hdmi_pll_read(phy, QSERDES_COM_C_READY_STATUS);
+ pll_locked = status & BIT(0);
+
+ return pll_locked;
+}
+
+static const struct clk_ops qmp_hdmi_8996_pll_ops = {
+ .recalc_rate = qmp_hdmi_8996_pll_recalc_rate,
+ .round_rate = qmp_hdmi_8996_pll_round_rate,
+ .is_enabled = qmp_hdmi_8996_pll_is_enabled,
+};
+
+static const struct phy_ops qmp_hdmi_8996_phy_ops = {
+ .init = qmp_hdmi_phy_init,
+ .configure = qmp_hdmi_phy_configure,
+ .power_on = qmp_hdmi_8996_phy_power_on,
+ .power_off = qmp_hdmi_8996_phy_power_off,
+ .exit = qmp_hdmi_phy_exit,
+ .owner = THIS_MODULE,
+};
+
+const struct qmp_hdmi_cfg qmp_hdmi_8996_cfg = {
+ .pll_ops = &qmp_hdmi_8996_pll_ops,
+ .phy_ops = &qmp_hdmi_8996_phy_ops,
+};
diff --git a/drivers/phy/qualcomm/phy-qcom-qmp-hdmi.h b/drivers/phy/qualcomm/phy-qcom-qmp-hdmi.h
new file mode 100644
index 000000000000..25d307a8f287
--- /dev/null
+++ b/drivers/phy/qualcomm/phy-qcom-qmp-hdmi.h
@@ -0,0 +1,75 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (c) 2016, The Linux Foundation. All rights reserved.
+ * Copyright (c) 2023, Linaro Ltd.
+ */
+
+#ifndef PHY_QCOM_QMP_HDMI_H
+#define PHY_QCOM_QMP_HDMI_H
+
+#include <linux/clk.h>
+#include <linux/clk-provider.h>
+#include <linux/regulator/consumer.h>
+#include <linux/phy/phy-hdmi.h>
+
+#define MAX_CLKS 2
+#define MAX_SUPPLIES 2
+
+#define HDMI_NUM_TX_CHANNEL 4
+
+struct qmp_hdmi_phy {
+ struct device *dev;
+ struct phy *phy;
+ void __iomem *serdes;
+ void __iomem *tx[HDMI_NUM_TX_CHANNEL];
+ void __iomem *phy_reg;
+
+ struct phy_configure_opts_hdmi hdmi_opts;
+
+ struct clk_hw pll_hw;
+ struct clk_bulk_data clks[MAX_CLKS];
+ struct regulator_bulk_data supplies[MAX_SUPPLIES];
+};
+
+struct qmp_hdmi_cfg {
+ const struct clk_ops *pll_ops;
+ const struct phy_ops *phy_ops;
+};
+
+#define hw_clk_to_pll(x) container_of(x, struct qmp_hdmi_phy, pll_hw)
+
+static inline void hdmi_phy_write(struct qmp_hdmi_phy *phy, int offset,
+ u32 data)
+{
+ writel(data, phy->phy_reg + offset);
+}
+
+static inline u32 hdmi_phy_read(struct qmp_hdmi_phy *phy, int offset)
+{
+ return readl(phy->phy_reg + offset);
+}
+
+static inline void hdmi_pll_write(struct qmp_hdmi_phy *phy, int offset,
+ u32 data)
+{
+ writel(data, phy->serdes + offset);
+}
+
+static inline u32 hdmi_pll_read(struct qmp_hdmi_phy *phy, int offset)
+{
+ return readl(phy->serdes + offset);
+}
+
+static inline void hdmi_tx_chan_write(struct qmp_hdmi_phy *phy, int channel,
+ int offset, int data)
+{
+ writel(data, phy->tx[channel] + offset);
+}
+
+int qmp_hdmi_phy_init(struct phy *phy);
+int qmp_hdmi_phy_configure(struct phy *phy, union phy_configure_opts *opts);
+int qmp_hdmi_phy_exit(struct phy *phy);
+
+extern const struct qmp_hdmi_cfg qmp_hdmi_8996_cfg;
+
+#endif
--
2.39.2
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