phy: qcom: qmp-usbc: Add DP-related fields for USB/DP switchable PHY

Extend qmp_usbc_offsets and qmp_phy_cfg with DP-specific fields,
including register offsets, init tables, and callback hooks. Also
update qmp_usbc struct to track DP-related resources and state.
This enables support for USB/DP switchable Type-C PHYs that operate
in either mode.

Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
Signed-off-by: Xiangxu Yin <xiangxu.yin@oss.qualcomm.com>
Link: https://patch.msgid.link/20251215-add-displayport-support-for-qcs615-platform-v8-3-cbc72c88a44e@oss.qualcomm.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>

1 files changed, 46 insertions, 8 deletions

diff --git a/drivers/phy/qualcomm/phy-qcom-qmp-usbc.c b/drivers/phy/qualcomm/phy-qcom-qmp-usbc.c
index 62920dd2aed3..de28c3464a40 100644
--- a/drivers/phy/qualcomm/phy-qcom-qmp-usbc.c
+++ b/drivers/phy/qualcomm/phy-qcom-qmp-usbc.c
@@ -293,13 +293,18 @@ struct qmp_usbc_offsets {
 	/* for PHYs with >= 2 lanes */
 	u16 tx2;
 	u16 rx2;
+
+	u16 dp_serdes;
+	u16 dp_txa;
+	u16 dp_txb;
+	u16 dp_dp_phy;
 };
 
-/* struct qmp_phy_cfg - per-PHY initialization config */
+struct qmp_usbc;
 struct qmp_phy_cfg {
 	const struct qmp_usbc_offsets *offsets;
 
-	/* Init sequence for PHY blocks - serdes, tx, rx, pcs */
+	/* Init sequence for USB PHY blocks - serdes, tx, rx, pcs */
 	const struct qmp_phy_init_tbl *serdes_tbl;
 	int serdes_tbl_num;
 	const struct qmp_phy_init_tbl *tx_tbl;
@@ -309,6 +314,27 @@ struct qmp_phy_cfg {
 	const struct qmp_phy_init_tbl *pcs_tbl;
 	int pcs_tbl_num;
 
+	/* Init sequence for DP PHY blocks - serdes, tx, rbr, hbr, hbr2 */
+	const struct qmp_phy_init_tbl *dp_serdes_tbl;
+	int dp_serdes_tbl_num;
+	const struct qmp_phy_init_tbl *dp_tx_tbl;
+	int dp_tx_tbl_num;
+	const struct qmp_phy_init_tbl *serdes_tbl_rbr;
+	int serdes_tbl_rbr_num;
+	const struct qmp_phy_init_tbl *serdes_tbl_hbr;
+	int serdes_tbl_hbr_num;
+	const struct qmp_phy_init_tbl *serdes_tbl_hbr2;
+	int serdes_tbl_hbr2_num;
+
+	const u8 (*swing_tbl)[4][4];
+	const u8 (*pre_emphasis_tbl)[4][4];
+
+	/* DP PHY callbacks */
+	void (*dp_aux_init)(struct qmp_usbc *qmp);
+	void (*configure_dp_tx)(struct qmp_usbc *qmp);
+	int (*configure_dp_phy)(struct qmp_usbc *qmp);
+	int (*calibrate_dp_phy)(struct qmp_usbc *qmp);
+
 	/* regulators to be requested */
 	const char * const *vreg_list;
 	int num_vregs;
@@ -329,24 +355,36 @@ struct qmp_usbc {
 	void __iomem *rx;
 	void __iomem *tx2;
 	void __iomem *rx2;
-
-	struct regmap *tcsr_map;
-	u32 vls_clamp_reg;
+	void __iomem *dp_dp_phy;
+	void __iomem *dp_tx;
+	void __iomem *dp_tx2;
+	void __iomem *dp_serdes;
 
 	struct clk *pipe_clk;
+	struct clk_fixed_rate pipe_clk_fixed;
+
+	struct clk_hw dp_link_hw;
+	struct clk_hw dp_pixel_hw;
 	struct clk_bulk_data *clks;
 	int num_clks;
 	int num_resets;
 	struct reset_control_bulk_data *resets;
 	struct regulator_bulk_data *vregs;
 
+	struct regmap *tcsr_map;
+	u32 vls_clamp_reg;
+	u32 dp_phy_mode_reg;
+
 	struct mutex phy_mutex;
 
 	struct phy *usb_phy;
 	enum phy_mode mode;
 	unsigned int usb_init_count;
 
-	struct clk_fixed_rate pipe_clk_fixed;
+	struct phy *dp_phy;
+	unsigned int dp_aux_cfg;
+	struct phy_configure_opts_dp dp_opts;
+	unsigned int dp_init_count;
 
 	struct typec_switch_dev *sw;
 	enum typec_orientation orientation;
@@ -689,7 +727,7 @@ static int __maybe_unused qmp_usbc_runtime_suspend(struct device *dev)
 
 	dev_vdbg(dev, "Suspending QMP phy, mode:%d\n", qmp->mode);
 
-	if (!qmp->usb_init_count) {
+	if (!qmp->usb_init_count && !qmp->dp_init_count) {
 		dev_vdbg(dev, "PHY not initialized, bailing out\n");
 		return 0;
 	}
@@ -709,7 +747,7 @@ static int __maybe_unused qmp_usbc_runtime_resume(struct device *dev)
 
 	dev_vdbg(dev, "Resuming QMP phy, mode:%d\n", qmp->mode);
 
-	if (!qmp->usb_init_count) {
+	if (!qmp->usb_init_count && !qmp->dp_init_count) {
 		dev_vdbg(dev, "PHY not initialized, bailing out\n");
 		return 0;
 	}