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Message-Id: <20250820-add-displayport-support-for-qcs615-platform-v3-9-a43bd25ec39c@oss.qualcomm.com>
Date: Wed, 20 Aug 2025 17:34:51 +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>,
Philipp Zabel <p.zabel@...gutronix.de>
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,
fange.zhang@....qualcomm.com, yongxing.mou@....qualcomm.com,
tingwei.zhang@....qualcomm.com, Bjorn Andersson <andersson@...nel.org>,
Konrad Dybcio <konradybcio@...nel.org>,
Dmitry Baryshkov <dmitry.baryshkov@....qualcomm.com>,
quic_lliu6@...cinc.com, Xiangxu Yin <xiangxu.yin@....qualcomm.com>
Subject: [PATCH v3 09/14] phy: qcom: qmp-usbc: Add DP PHY ops for USB/DP
switchable Type-C PHYs
Define qmp_usbc_dp_phy_ops struct to support DP mode on USB/DP
switchable PHYs.
Signed-off-by: Xiangxu Yin <xiangxu.yin@....qualcomm.com>
---
drivers/phy/qualcomm/phy-qcom-qmp-usbc.c | 163 +++++++++++++++++++++++++++++++
1 file changed, 163 insertions(+)
diff --git a/drivers/phy/qualcomm/phy-qcom-qmp-usbc.c b/drivers/phy/qualcomm/phy-qcom-qmp-usbc.c
index 1508a4a5f57aff85318485b79528325f28a825a4..a1495a2029cf038bb65c36e42d0a4f633e544558 100644
--- a/drivers/phy/qualcomm/phy-qcom-qmp-usbc.c
+++ b/drivers/phy/qualcomm/phy-qcom-qmp-usbc.c
@@ -22,6 +22,8 @@
#include <linux/slab.h>
#include <linux/usb/typec.h>
#include <linux/usb/typec_mux.h>
+#include <dt-bindings/phy/phy-qcom-qmp.h>
+#include <drm/bridge/aux-bridge.h>
#include "phy-qcom-qmp-common.h"
@@ -1088,6 +1090,157 @@ static int qmp_usbc_usb_set_mode(struct phy *phy, enum phy_mode mode, int submod
return 0;
}
+static int qmp_usbc_dp_enable(struct phy *phy)
+{
+ struct qmp_usbc *qmp = phy_get_drvdata(phy);
+ const struct qmp_phy_cfg *cfg = qmp->cfg;
+ int ret;
+
+ if (qmp->dp_init_count) {
+ dev_err(qmp->dev, "DP already inited\n");
+ return 0;
+ }
+
+ mutex_lock(&qmp->phy_mutex);
+
+ ret = qmp_usbc_com_init(phy);
+ if (ret)
+ goto dp_init_unlock;
+
+ cfg->dp_aux_init(qmp);
+
+ qmp->dp_init_count++;
+
+dp_init_unlock:
+ mutex_unlock(&qmp->phy_mutex);
+ return ret;
+}
+
+static int qmp_usbc_dp_disable(struct phy *phy)
+{
+ struct qmp_usbc *qmp = phy_get_drvdata(phy);
+
+ mutex_lock(&qmp->phy_mutex);
+
+ qmp_usbc_com_exit(phy);
+
+ qmp->dp_init_count--;
+
+ mutex_unlock(&qmp->phy_mutex);
+
+ return 0;
+}
+
+static int qmp_usbc_dp_configure(struct phy *phy, union phy_configure_opts *opts)
+{
+ const struct phy_configure_opts_dp *dp_opts = &opts->dp;
+ struct qmp_usbc *qmp = phy_get_drvdata(phy);
+ const struct qmp_phy_cfg *cfg = qmp->cfg;
+
+ mutex_lock(&qmp->phy_mutex);
+
+ memcpy(&qmp->dp_opts, dp_opts, sizeof(*dp_opts));
+ if (qmp->dp_opts.set_voltages) {
+ cfg->configure_dp_tx(qmp);
+ qmp->dp_opts.set_voltages = 0;
+ }
+
+ mutex_unlock(&qmp->phy_mutex);
+
+ return 0;
+}
+
+static int qmp_usbc_dp_calibrate(struct phy *phy)
+{
+ struct qmp_usbc *qmp = phy_get_drvdata(phy);
+ const struct qmp_phy_cfg *cfg = qmp->cfg;
+ int ret = 0;
+
+ mutex_lock(&qmp->phy_mutex);
+
+ if (cfg->calibrate_dp_phy) {
+ ret = cfg->calibrate_dp_phy(qmp);
+ if (ret) {
+ dev_err(qmp->dev, "dp calibrate err(%d)\n", ret);
+ mutex_unlock(&qmp->phy_mutex);
+ return ret;
+ }
+ }
+
+ mutex_unlock(&qmp->phy_mutex);
+ return 0;
+}
+
+static int qmp_usbc_dp_serdes_init(struct qmp_usbc *qmp)
+{
+ const struct qmp_phy_cfg *cfg = qmp->cfg;
+ void __iomem *serdes = qmp->dp_serdes;
+ const struct phy_configure_opts_dp *dp_opts = &qmp->dp_opts;
+
+ qmp_configure(qmp->dev, serdes, cfg->dp_serdes_tbl,
+ cfg->dp_serdes_tbl_num);
+
+ switch (dp_opts->link_rate) {
+ case 1620:
+ qmp_configure(qmp->dev, serdes, cfg->serdes_tbl_rbr,
+ cfg->serdes_tbl_rbr_num);
+ break;
+ case 2700:
+ qmp_configure(qmp->dev, serdes, cfg->serdes_tbl_hbr,
+ cfg->serdes_tbl_hbr_num);
+ break;
+ case 5400:
+ qmp_configure(qmp->dev, serdes, cfg->serdes_tbl_hbr2,
+ cfg->serdes_tbl_hbr2_num);
+ break;
+ default:
+ /* Other link rates aren't supported */
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static int qmp_usbc_dp_power_on(struct phy *phy)
+{
+ struct qmp_usbc *qmp = phy_get_drvdata(phy);
+ const struct qmp_phy_cfg *cfg = qmp->cfg;
+
+ void __iomem *tx = qmp->dp_tx;
+ void __iomem *tx2 = qmp->dp_tx2;
+
+ mutex_lock(&qmp->phy_mutex);
+
+ qmp_usbc_dp_serdes_init(qmp);
+
+ qmp_configure_lane(qmp->dev, tx, cfg->dp_tx_tbl, cfg->dp_tx_tbl_num, 1);
+ qmp_configure_lane(qmp->dev, tx2, cfg->dp_tx_tbl, cfg->dp_tx_tbl_num, 2);
+
+ /* Configure special DP tx tunings */
+ cfg->configure_dp_tx(qmp);
+
+ /* Configure link rate, swing, etc. */
+ cfg->configure_dp_phy(qmp);
+
+ mutex_unlock(&qmp->phy_mutex);
+
+ return 0;
+}
+
+static int qmp_usbc_dp_power_off(struct phy *phy)
+{
+ struct qmp_usbc *qmp = phy_get_drvdata(phy);
+
+ mutex_lock(&qmp->phy_mutex);
+
+ /* Assert DP PHY power down */
+ writel(DP_PHY_PD_CTL_PSR_PWRDN, qmp->dp_dp_phy + QSERDES_DP_PHY_PD_CTL);
+
+ mutex_unlock(&qmp->phy_mutex);
+
+ return 0;
+}
+
static const struct phy_ops qmp_usbc_usb_phy_ops = {
.init = qmp_usbc_usb_enable,
.exit = qmp_usbc_usb_disable,
@@ -1095,6 +1248,16 @@ static const struct phy_ops qmp_usbc_usb_phy_ops = {
.owner = THIS_MODULE,
};
+static const struct phy_ops qmp_usbc_dp_phy_ops = {
+ .init = qmp_usbc_dp_enable,
+ .exit = qmp_usbc_dp_disable,
+ .configure = qmp_usbc_dp_configure,
+ .calibrate = qmp_usbc_dp_calibrate,
+ .power_on = qmp_usbc_dp_power_on,
+ .power_off = qmp_usbc_dp_power_off,
+ .owner = THIS_MODULE,
+};
+
static void qmp_usbc_enable_autonomous_mode(struct qmp_usbc *qmp)
{
const struct qmp_phy_cfg *cfg = qmp->cfg;
--
2.34.1
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