diff mbox series

[v3,06/13] drm/msm/hdmi: switch to pm_runtime_resume_and_get()

Message ID 20240623-fd-hdmi-hpd-v3-6-8645a64cbd63@linaro.org
State New
Headers show
Series drm/msm/hdmi: rework and fix the HPD even generation | expand

Commit Message

Dmitry Baryshkov June 22, 2024, 10:02 p.m. UTC 
The pm_runtime_get_sync() function is a bad choise for runtime power
management. Switch HDMI driver to pm_runtime_resume_and_get() and add
proper error handling, while we are at it.

Reviewed-by: Jessica Zhang <quic_jesszhan@quicinc.com>
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
---
 drivers/gpu/drm/msm/hdmi/hdmi_bridge.c |  2 +-
 drivers/gpu/drm/msm/hdmi/hdmi_hpd.c    | 12 ++++++++++--
 drivers/gpu/drm/msm/hdmi/hdmi_phy.c    |  6 +++++-
 3 files changed, 16 insertions(+), 4 deletions(-)
diff mbox series

Patch

diff --git a/drivers/gpu/drm/msm/hdmi/hdmi_bridge.c b/drivers/gpu/drm/msm/hdmi/hdmi_bridge.c
index f1790dedf451..34085fd9739b 100644
--- a/drivers/gpu/drm/msm/hdmi/hdmi_bridge.c
+++ b/drivers/gpu/drm/msm/hdmi/hdmi_bridge.c
@@ -21,7 +21,7 @@  static void msm_hdmi_power_on(struct drm_bridge *bridge)
 	const struct hdmi_platform_config *config = hdmi->config;
 	int ret;
 
-	pm_runtime_get_sync(&hdmi->pdev->dev);
+	pm_runtime_resume_and_get(&hdmi->pdev->dev);
 
 	ret = regulator_bulk_enable(config->pwr_reg_cnt, hdmi->pwr_regs);
 	if (ret)
diff --git a/drivers/gpu/drm/msm/hdmi/hdmi_hpd.c b/drivers/gpu/drm/msm/hdmi/hdmi_hpd.c
index 36266aa626dc..fc21ad3b01dc 100644
--- a/drivers/gpu/drm/msm/hdmi/hdmi_hpd.c
+++ b/drivers/gpu/drm/msm/hdmi/hdmi_hpd.c
@@ -85,7 +85,12 @@  int msm_hdmi_hpd_enable(struct drm_bridge *bridge)
 	if (hdmi->hpd_gpiod)
 		gpiod_set_value_cansleep(hdmi->hpd_gpiod, 1);
 
-	pm_runtime_get_sync(dev);
+	ret = pm_runtime_resume_and_get(dev);
+	if (ret) {
+		DRM_DEV_ERROR(dev, "runtime resume failed: %d\n", ret);
+		goto fail;
+	}
+
 	ret = clk_bulk_prepare_enable(config->hpd_clk_cnt, hdmi->hpd_clks);
 	if (ret)
 		goto fail;
@@ -178,7 +183,10 @@  static enum drm_connector_status detect_reg(struct hdmi *hdmi)
 	uint32_t hpd_int_status = 0;
 	int ret;
 
-	pm_runtime_get_sync(&hdmi->pdev->dev);
+	ret = pm_runtime_resume_and_get(&hdmi->pdev->dev);
+	if (ret)
+		goto out;
+
 	ret = clk_bulk_prepare_enable(config->hpd_clk_cnt, hdmi->hpd_clks);
 	if (ret)
 		goto out;
diff --git a/drivers/gpu/drm/msm/hdmi/hdmi_phy.c b/drivers/gpu/drm/msm/hdmi/hdmi_phy.c
index 88a3423b7f24..d5acae752300 100644
--- a/drivers/gpu/drm/msm/hdmi/hdmi_phy.c
+++ b/drivers/gpu/drm/msm/hdmi/hdmi_phy.c
@@ -58,7 +58,11 @@  int msm_hdmi_phy_resource_enable(struct hdmi_phy *phy)
 	struct device *dev = &phy->pdev->dev;
 	int i, ret = 0;
 
-	pm_runtime_get_sync(dev);
+	ret = pm_runtime_resume_and_get(dev);
+	if (ret) {
+		DRM_DEV_ERROR(dev, "runtime resume failed: %d\n", ret);
+		return ret;
+	}
 
 	ret = regulator_bulk_enable(cfg->num_regs, phy->regs);
 	if (ret) {