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From: Yannick Fertre <yannick.fertre@st.com>
To: Yannick Fertre <yannick.fertre@st.com>,
	Philippe Cornu <philippe.cornu@st.com>,
	Benjamin Gaignard <benjamin.gaignard@st.com>,
	David Airlie <airlied@linux.ie>, Daniel Vetter <daniel@ffwll.ch>,
	Maxime Coquelin <mcoquelin.stm32@gmail.com>,
	Alexandre Torgue <alexandre.torgue@st.com>,
	<dri-devel@lists.freedesktop.org>,
	<linux-stm32@st-md-mailman.stormreply.com>,
	<linux-arm-kernel@lists.infradead.org>,
	<linux-kernel@vger.kernel.org>
Subject: [PATCH] drm/stm: ltdc: remove call of pm-runtime functions
Date: Wed, 1 Jul 2020 14:04:02 +0200	[thread overview]
Message-ID: <20200701120402.6444-1-yannick.fertre@st.com> (raw)

It is not necessary to suspend or stop the ltdc clocks
to modify the pixel clock.

Signed-off-by: Yannick Fertre <yannick.fertre@st.com>
---
 drivers/gpu/drm/stm/ltdc.c | 16 ----------------
 1 file changed, 16 deletions(-)

diff --git a/drivers/gpu/drm/stm/ltdc.c b/drivers/gpu/drm/stm/ltdc.c
index 3f590d916e91..6e28f707092f 100644
--- a/drivers/gpu/drm/stm/ltdc.c
+++ b/drivers/gpu/drm/stm/ltdc.c
@@ -506,15 +506,7 @@ static bool ltdc_crtc_mode_fixup(struct drm_crtc *crtc,
 				 struct drm_display_mode *adjusted_mode)
 {
 	struct ltdc_device *ldev = crtc_to_ltdc(crtc);
-	struct drm_device *ddev = crtc->dev;
 	int rate = mode->clock * 1000;
-	bool runtime_active;
-	int ret;
-
-	runtime_active = pm_runtime_active(ddev->dev);
-
-	if (runtime_active)
-		pm_runtime_put_sync(ddev->dev);
 
 	if (clk_set_rate(ldev->pixel_clk, rate) < 0) {
 		DRM_ERROR("Cannot set rate (%dHz) for pixel clk\n", rate);
@@ -523,14 +515,6 @@ static bool ltdc_crtc_mode_fixup(struct drm_crtc *crtc,
 
 	adjusted_mode->clock = clk_get_rate(ldev->pixel_clk) / 1000;
 
-	if (runtime_active) {
-		ret = pm_runtime_get_sync(ddev->dev);
-		if (ret) {
-			DRM_ERROR("Failed to fixup mode, cannot get sync\n");
-			return false;
-		}
-	}
-
 	DRM_DEBUG_DRIVER("requested clock %dkHz, adjusted clock %dkHz\n",
 			 mode->clock, adjusted_mode->clock);
 
-- 
2.17.1


WARNING: multiple messages have this Message-ID (diff)
From: Yannick Fertre <yannick.fertre@st.com>
To: Yannick Fertre <yannick.fertre@st.com>,
	Philippe Cornu <philippe.cornu@st.com>,
	Benjamin Gaignard <benjamin.gaignard@st.com>,
	David Airlie <airlied@linux.ie>, Daniel Vetter <daniel@ffwll.ch>,
	Maxime Coquelin <mcoquelin.stm32@gmail.com>,
	Alexandre Torgue <alexandre.torgue@st.com>,
	<dri-devel@lists.freedesktop.org>,
	<linux-stm32@st-md-mailman.stormreply.com>,
	<linux-arm-kernel@lists.infradead.org>,
	<linux-kernel@vger.kernel.org>
Subject: [PATCH] drm/stm: ltdc: remove call of pm-runtime functions
Date: Wed, 1 Jul 2020 14:04:02 +0200	[thread overview]
Message-ID: <20200701120402.6444-1-yannick.fertre@st.com> (raw)

It is not necessary to suspend or stop the ltdc clocks
to modify the pixel clock.

Signed-off-by: Yannick Fertre <yannick.fertre@st.com>
---
 drivers/gpu/drm/stm/ltdc.c | 16 ----------------
 1 file changed, 16 deletions(-)

diff --git a/drivers/gpu/drm/stm/ltdc.c b/drivers/gpu/drm/stm/ltdc.c
index 3f590d916e91..6e28f707092f 100644
--- a/drivers/gpu/drm/stm/ltdc.c
+++ b/drivers/gpu/drm/stm/ltdc.c
@@ -506,15 +506,7 @@ static bool ltdc_crtc_mode_fixup(struct drm_crtc *crtc,
 				 struct drm_display_mode *adjusted_mode)
 {
 	struct ltdc_device *ldev = crtc_to_ltdc(crtc);
-	struct drm_device *ddev = crtc->dev;
 	int rate = mode->clock * 1000;
-	bool runtime_active;
-	int ret;
-
-	runtime_active = pm_runtime_active(ddev->dev);
-
-	if (runtime_active)
-		pm_runtime_put_sync(ddev->dev);
 
 	if (clk_set_rate(ldev->pixel_clk, rate) < 0) {
 		DRM_ERROR("Cannot set rate (%dHz) for pixel clk\n", rate);
@@ -523,14 +515,6 @@ static bool ltdc_crtc_mode_fixup(struct drm_crtc *crtc,
 
 	adjusted_mode->clock = clk_get_rate(ldev->pixel_clk) / 1000;
 
-	if (runtime_active) {
-		ret = pm_runtime_get_sync(ddev->dev);
-		if (ret) {
-			DRM_ERROR("Failed to fixup mode, cannot get sync\n");
-			return false;
-		}
-	}
-
 	DRM_DEBUG_DRIVER("requested clock %dkHz, adjusted clock %dkHz\n",
 			 mode->clock, adjusted_mode->clock);
 
-- 
2.17.1


_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel

WARNING: multiple messages have this Message-ID (diff)
From: Yannick Fertre <yannick.fertre@st.com>
To: Yannick Fertre <yannick.fertre@st.com>,
	Philippe Cornu <philippe.cornu@st.com>,
	Benjamin Gaignard <benjamin.gaignard@st.com>,
	David Airlie <airlied@linux.ie>, Daniel Vetter <daniel@ffwll.ch>,
	Maxime Coquelin <mcoquelin.stm32@gmail.com>,
	Alexandre Torgue <alexandre.torgue@st.com>,
	<dri-devel@lists.freedesktop.org>,
	<linux-stm32@st-md-mailman.stormreply.com>,
	<linux-arm-kernel@lists.infradead.org>,
	<linux-kernel@vger.kernel.org>
Subject: [PATCH] drm/stm: ltdc: remove call of pm-runtime functions
Date: Wed, 1 Jul 2020 14:04:02 +0200	[thread overview]
Message-ID: <20200701120402.6444-1-yannick.fertre@st.com> (raw)

It is not necessary to suspend or stop the ltdc clocks
to modify the pixel clock.

Signed-off-by: Yannick Fertre <yannick.fertre@st.com>
---
 drivers/gpu/drm/stm/ltdc.c | 16 ----------------
 1 file changed, 16 deletions(-)

diff --git a/drivers/gpu/drm/stm/ltdc.c b/drivers/gpu/drm/stm/ltdc.c
index 3f590d916e91..6e28f707092f 100644
--- a/drivers/gpu/drm/stm/ltdc.c
+++ b/drivers/gpu/drm/stm/ltdc.c
@@ -506,15 +506,7 @@ static bool ltdc_crtc_mode_fixup(struct drm_crtc *crtc,
 				 struct drm_display_mode *adjusted_mode)
 {
 	struct ltdc_device *ldev = crtc_to_ltdc(crtc);
-	struct drm_device *ddev = crtc->dev;
 	int rate = mode->clock * 1000;
-	bool runtime_active;
-	int ret;
-
-	runtime_active = pm_runtime_active(ddev->dev);
-
-	if (runtime_active)
-		pm_runtime_put_sync(ddev->dev);
 
 	if (clk_set_rate(ldev->pixel_clk, rate) < 0) {
 		DRM_ERROR("Cannot set rate (%dHz) for pixel clk\n", rate);
@@ -523,14 +515,6 @@ static bool ltdc_crtc_mode_fixup(struct drm_crtc *crtc,
 
 	adjusted_mode->clock = clk_get_rate(ldev->pixel_clk) / 1000;
 
-	if (runtime_active) {
-		ret = pm_runtime_get_sync(ddev->dev);
-		if (ret) {
-			DRM_ERROR("Failed to fixup mode, cannot get sync\n");
-			return false;
-		}
-	}
-
 	DRM_DEBUG_DRIVER("requested clock %dkHz, adjusted clock %dkHz\n",
 			 mode->clock, adjusted_mode->clock);
 
-- 
2.17.1

_______________________________________________
dri-devel mailing list
dri-devel@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/dri-devel

             reply	other threads:[~2020-07-01 12:04 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-07-01 12:04 Yannick Fertre [this message]
2020-07-01 12:04 ` [PATCH] drm/stm: ltdc: remove call of pm-runtime functions Yannick Fertre
2020-07-01 12:04 ` Yannick Fertre
2020-07-02 12:18 ` Philippe CORNU
2020-07-02 12:18   ` Philippe CORNU
2020-07-02 12:18   ` Philippe CORNU
2020-07-08  9:49   ` Benjamin Gaignard
2020-07-08  9:49     ` Benjamin Gaignard
2020-07-08  9:49     ` Benjamin Gaignard

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