linux-kernel - [PATCH v2 06/13] phy: qcom: qmp-usbc: Add DP PHY struct definitions

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Message-Id: <20250722-add-displayport-support-for-qcs615-platform-v2-6-42b4037171f8@oss.qualcomm.com>
Date: Tue, 22 Jul 2025 15:22:07 +0800
From: Xiangxu Yin <xiangxu.yin@....qualcomm.com>
To: Rob Clark <robin.clark@....qualcomm.com>,
        Dmitry Baryshkov <lumag@...nel.org>,
        Abhinav Kumar <abhinav.kumar@...ux.dev>,
        Jessica Zhang <jessica.zhang@....qualcomm.com>,
        Sean Paul <sean@...rly.run>,
        Marijn Suijten <marijn.suijten@...ainline.org>,
        Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
        Maxime Ripard <mripard@...nel.org>,
        Thomas Zimmermann <tzimmermann@...e.de>,
        David Airlie <airlied@...il.com>, Simona Vetter <simona@...ll.ch>,
        Rob Herring <robh@...nel.org>,
        Krzysztof Kozlowski <krzk+dt@...nel.org>,
        Conor Dooley <conor+dt@...nel.org>,
        Kuogee Hsieh <quic_khsieh@...cinc.com>, Vinod Koul <vkoul@...nel.org>,
        Kishon Vijay Abraham I <kishon@...nel.org>
Cc: linux-arm-msm@...r.kernel.org, dri-devel@...ts.freedesktop.org,
        freedreno@...ts.freedesktop.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-phy@...ts.infradead.org,
        dmitry.baryshkov@....qualcomm.com, konrad.dybcio@....qualcomm.com,
        fange.zhang@....qualcomm.com, quic_lliu6@...cinc.com,
        quic_yongmou@...cinc.com, Xiangxu Yin <xiangxu.yin@....qualcomm.com>
Subject: [PATCH v2 06/13] phy: qcom: qmp-usbc: Add DP PHY struct
 definitions

This patch introduces new data structures to support DP functionality:
- `qmp_phy_dp_cfg`: Platform-specific constant configuration for DP PHY,
  including init tables, function callbacks, swing/pre-emphasis tables,
  and regulator definitions.
- `qmp_phy_dp_layout`: Runtime layout for DP PHY, including mapped
  registers, DP options from driver, and dynamically configured clocks.
- `qmp_usbc_dp_offsets`: Platform-defined base offsets for DP
  sub-blocks.

These structures mirror the USB counterparts and enable clean separation
of DP logic.

Signed-off-by: Xiangxu Yin <xiangxu.yin@....qualcomm.com>
---
 drivers/phy/qualcomm/phy-qcom-qmp-usbc.c | 70 ++++++++++++++++++++++++++++++++
 1 file changed, 70 insertions(+)

diff --git a/drivers/phy/qualcomm/phy-qcom-qmp-usbc.c b/drivers/phy/qualcomm/phy-qcom-qmp-usbc.c
index 647e2f54b744bf099ea667e672c606dd7aef3bcf..bc0eaa7dba9cb84b54c7c5a264aac613f888cb99 100644
--- a/drivers/phy/qualcomm/phy-qcom-qmp-usbc.c
+++ b/drivers/phy/qualcomm/phy-qcom-qmp-usbc.c
@@ -291,6 +291,12 @@ enum qmp_phy_usbc_type {
 	QMP_PHY_USBC_DP,
 };
 
+/* list of regulators */
+struct qmp_regulator_data {
+	const char *name;
+	unsigned int enable_load;
+};
+
 struct qmp_phy_cfg {
 	int type;
 	const void *cfg;
@@ -341,6 +347,67 @@ struct qmp_phy_usb_layout {
 	struct clk_fixed_rate pipe_clk_fixed;
 };
 
+struct qmp_usbc_dp_offsets {
+	u16 dp_serdes;
+	u16 dp_txa;
+	u16 dp_txb;
+	u16 dp_phy;
+};
+
+struct qmp_usbc;
+
+struct qmp_phy_dp_cfg {
+	const struct qmp_usbc_dp_offsets *offsets;
+
+	const struct qmp_phy_init_tbl *serdes_tbl;
+	int serdes_tbl_num;
+	const struct qmp_phy_init_tbl *tx_tbl;
+	int tx_tbl_num;
+	const struct qmp_phy_init_tbl *rx_tbl;
+	int rx_tbl_num;
+	const struct qmp_phy_init_tbl *pcs_tbl;
+	int pcs_tbl_num;
+	const struct qmp_phy_init_tbl *pcs_usb_tbl;
+	int pcs_usb_tbl_num;
+	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;
+
+	/* Init sequence for DP PHY block link rates */
+	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;
+
+	/* DP PHY swing and pre_emphasis tables */
+	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);
+
+	const struct qmp_regulator_data *vreg_list;
+	int num_vregs;
+};
+
+struct qmp_phy_dp_layout {
+	void __iomem *dp_phy;
+	void __iomem *dp_tx;
+	void __iomem *dp_tx2;
+	void __iomem *dp_serdes;
+
+	unsigned int dp_aux_cfg;
+	struct phy_configure_opts_dp dp_opts;
+	struct clk_hw dp_link_hw;
+	struct clk_hw dp_pixel_hw;
+};
+
 struct qmp_usbc {
 	struct device *dev;
 	int type;
@@ -359,6 +426,7 @@ struct qmp_usbc {
 
 	struct regmap *tcsr_map;
 	u32 vls_clamp_reg;
+	u32 dp_phy_mode_reg;
 
 	struct typec_switch_dev *sw;
 };
@@ -480,7 +548,9 @@ static const struct qmp_phy_cfg sdm660_phy_usb3_cfg = {
 };
 
 #define to_usb_cfg(x) ((struct qmp_phy_usb_cfg *)((x)->cfg))
+#define to_dp_cfg(x) ((struct qmp_phy_dp_cfg *)((x)->cfg))
 #define to_usb_layout(x) ((struct qmp_phy_usb_layout *)((x)->layout))
+#define to_dp_layout(x) ((struct qmp_phy_dp_layout *)((x)->layout))
 
 static int qmp_usbc_generic_init(struct phy *phy)
 {

-- 
2.34.1