linux-kernel - [PATCH] drm/msm: Don't use autosuspend for display

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Message-Id: <20211215175910.1744151-1-robdclark@gmail.com>
Date:   Wed, 15 Dec 2021 09:59:02 -0800
From:   Rob Clark <robdclark@...il.com>
To:     dri-devel@...ts.freedesktop.org
Cc:     freedreno@...ts.freedesktop.org, linux-arm-msm@...r.kernel.org,
        Rob Clark <robdclark@...omium.org>,
        Rob Clark <robdclark@...il.com>, Sean Paul <sean@...rly.run>,
        Abhinav Kumar <quic_abhinavk@...cinc.com>,
        David Airlie <airlied@...ux.ie>,
        Daniel Vetter <daniel@...ll.ch>,
        Dmitry Baryshkov <dmitry.baryshkov@...aro.org>,
        Bjorn Andersson <bjorn.andersson@...aro.org>,
        Stephen Boyd <swboyd@...omium.org>,
        Jonathan Marek <jonathan@...ek.ca>,
        Jessica Zhang <quic_jesszhan@...cinc.com>,
        Vladimir Lypak <vladimir.lypak@...il.com>,
        Rajeev Nandan <quic_rajeevny@...cinc.com>,
        linux-kernel@...r.kernel.org (open list)
Subject: [PATCH] drm/msm: Don't use autosuspend for display

From: Rob Clark <robdclark@...omium.org>

No functional change, as we only actually enable autosuspend for the GPU
device.  But lets not encourage thinking that autosuspend is a good idea
for anything display related.

Signed-off-by: Rob Clark <robdclark@...omium.org>
---
 drivers/gpu/drm/msm/dsi/dsi_host.c     | 8 ++++----
 drivers/gpu/drm/msm/dsi/phy/dsi_phy.c  | 2 +-
 drivers/gpu/drm/msm/hdmi/hdmi_bridge.c | 2 +-
 drivers/gpu/drm/msm/hdmi/hdmi_hpd.c    | 4 ++--
 4 files changed, 8 insertions(+), 8 deletions(-)

diff --git a/drivers/gpu/drm/msm/dsi/dsi_host.c b/drivers/gpu/drm/msm/dsi/dsi_host.c
index 5b4bb722f750..6b3ced4aaaf5 100644
--- a/drivers/gpu/drm/msm/dsi/dsi_host.c
+++ b/drivers/gpu/drm/msm/dsi/dsi_host.c
@@ -2020,7 +2020,7 @@ void msm_dsi_host_xfer_restore(struct mipi_dsi_host *host,
 	/* TODO: unvote for bus bandwidth */
 
 	cfg_hnd->ops->link_clk_disable(msm_host);
-	pm_runtime_put_autosuspend(&msm_host->pdev->dev);
+	pm_runtime_put(&msm_host->pdev->dev);
 }
 
 int msm_dsi_host_cmd_tx(struct mipi_dsi_host *host,
@@ -2252,7 +2252,7 @@ int msm_dsi_host_enable(struct mipi_dsi_host *host)
 	 */
 	/* if (msm_panel->mode == MSM_DSI_CMD_MODE) {
 	 *	dsi_link_clk_disable(msm_host);
-	 *	pm_runtime_put_autosuspend(&msm_host->pdev->dev);
+	 *	pm_runtime_put(&msm_host->pdev->dev);
 	 * }
 	 */
 	msm_host->enabled = true;
@@ -2344,7 +2344,7 @@ int msm_dsi_host_power_on(struct mipi_dsi_host *host,
 
 fail_disable_clk:
 	cfg_hnd->ops->link_clk_disable(msm_host);
-	pm_runtime_put_autosuspend(&msm_host->pdev->dev);
+	pm_runtime_put(&msm_host->pdev->dev);
 fail_disable_reg:
 	dsi_host_regulator_disable(msm_host);
 unlock_ret:
@@ -2371,7 +2371,7 @@ int msm_dsi_host_power_off(struct mipi_dsi_host *host)
 	pinctrl_pm_select_sleep_state(&msm_host->pdev->dev);
 
 	cfg_hnd->ops->link_clk_disable(msm_host);
-	pm_runtime_put_autosuspend(&msm_host->pdev->dev);
+	pm_runtime_put(&msm_host->pdev->dev);
 
 	dsi_host_regulator_disable(msm_host);
 
diff --git a/drivers/gpu/drm/msm/dsi/phy/dsi_phy.c b/drivers/gpu/drm/msm/dsi/phy/dsi_phy.c
index 0b2ae5c15240..c2ed177717c7 100644
--- a/drivers/gpu/drm/msm/dsi/phy/dsi_phy.c
+++ b/drivers/gpu/drm/msm/dsi/phy/dsi_phy.c
@@ -602,7 +602,7 @@ static int dsi_phy_enable_resource(struct msm_dsi_phy *phy)
 static void dsi_phy_disable_resource(struct msm_dsi_phy *phy)
 {
 	clk_disable_unprepare(phy->ahb_clk);
-	pm_runtime_put_autosuspend(&phy->pdev->dev);
+	pm_runtime_put(&phy->pdev->dev);
 }
 
 static const struct of_device_id dsi_phy_dt_match[] = {
diff --git a/drivers/gpu/drm/msm/hdmi/hdmi_bridge.c b/drivers/gpu/drm/msm/hdmi/hdmi_bridge.c
index 211b73dddf65..68fba4bf7212 100644
--- a/drivers/gpu/drm/msm/hdmi/hdmi_bridge.c
+++ b/drivers/gpu/drm/msm/hdmi/hdmi_bridge.c
@@ -69,7 +69,7 @@ static void power_off(struct drm_bridge *bridge)
 	if (ret)
 		DRM_DEV_ERROR(dev->dev, "failed to disable pwr regulator: %d\n", ret);
 
-	pm_runtime_put_autosuspend(&hdmi->pdev->dev);
+	pm_runtime_put(&hdmi->pdev->dev);
 }
 
 #define AVI_IFRAME_LINE_NUMBER 1
diff --git a/drivers/gpu/drm/msm/hdmi/hdmi_hpd.c b/drivers/gpu/drm/msm/hdmi/hdmi_hpd.c
index 1cda7bf23b3b..75605ddac7c4 100644
--- a/drivers/gpu/drm/msm/hdmi/hdmi_hpd.c
+++ b/drivers/gpu/drm/msm/hdmi/hdmi_hpd.c
@@ -205,7 +205,7 @@ void msm_hdmi_hpd_disable(struct hdmi_bridge *hdmi_bridge)
 	msm_hdmi_set_mode(hdmi, false);
 
 	enable_hpd_clocks(hdmi, false);
-	pm_runtime_put_autosuspend(dev);
+	pm_runtime_put(dev);
 
 	ret = gpio_config(hdmi, false);
 	if (ret)
@@ -260,7 +260,7 @@ static enum drm_connector_status detect_reg(struct hdmi *hdmi)
 	hpd_int_status = hdmi_read(hdmi, REG_HDMI_HPD_INT_STATUS);
 
 	enable_hpd_clocks(hdmi, false);
-	pm_runtime_put_autosuspend(&hdmi->pdev->dev);
+	pm_runtime_put(&hdmi->pdev->dev);
 
 	return (hpd_int_status & HDMI_HPD_INT_STATUS_CABLE_DETECTED) ?
 			connector_status_connected : connector_status_disconnected;
-- 
2.33.1