diff mbox series

[v3,3/6] phy: qcom: qmp-combo: store DP phy power state

Message ID 20250527-topic-4ln_dp_respin-v3-3-f9a0763ec289@oss.qualcomm.com
State New
Headers show
Series [v3,1/6] dt-bindings: phy: qcom,sc8280xp-qmp-usb43dp: Reference usb-switch.yaml to allow mode-switch | expand

Commit Message

Konrad Dybcio May 27, 2025, 8:40 p.m. UTC 
From: Neil Armstrong <neil.armstrong@linaro.org>

Switching the PHY Mode requires the DisplayPort PHY to be powered off,
keep track of the DisplayPort phy power state.

Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
---
 drivers/phy/qualcomm/phy-qcom-qmp-combo.c | 5 +++++
 1 file changed, 5 insertions(+)
diff mbox series

Patch

diff --git a/drivers/phy/qualcomm/phy-qcom-qmp-combo.c b/drivers/phy/qualcomm/phy-qcom-qmp-combo.c
index d0396817f3a05c7e4baeef0de1332c3a83942a51..26480d63322b22eca9637392f888bfbe440c2a13 100644
--- a/drivers/phy/qualcomm/phy-qcom-qmp-combo.c
+++ b/drivers/phy/qualcomm/phy-qcom-qmp-combo.c
@@ -1694,6 +1694,7 @@  struct qmp_combo {
 	unsigned int dp_aux_cfg;
 	struct phy_configure_opts_dp dp_opts;
 	unsigned int dp_init_count;
+	bool dp_powered_on;
 
 	struct clk_fixed_rate pipe_clk_fixed;
 	struct clk_hw dp_link_hw;
@@ -2913,6 +2914,8 @@  static int qmp_combo_dp_power_on(struct phy *phy)
 	/* Configure link rate, swing, etc. */
 	cfg->configure_dp_phy(qmp);
 
+	qmp->dp_powered_on = true;
+
 	mutex_unlock(&qmp->phy_mutex);
 
 	return 0;
@@ -2927,6 +2930,8 @@  static int qmp_combo_dp_power_off(struct phy *phy)
 	/* Assert DP PHY power down */
 	writel(DP_PHY_PD_CTL_PSR_PWRDN, qmp->dp_dp_phy + QSERDES_DP_PHY_PD_CTL);
 
+	qmp->dp_powered_on = false;
+
 	mutex_unlock(&qmp->phy_mutex);
 
 	return 0;