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Message-ID: <20231019055619.19358-16-shawn.sung@mediatek.com>
Date: Thu, 19 Oct 2023 13:56:10 +0800
From: Hsiao Chien Sung <shawn.sung@...iatek.com>
To: AngeloGioacchino Del Regno
<angelogioacchino.delregno@...labora.com>,
CK Hu <ck.hu@...iatek.com>,
Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
Matthias Brugger <matthias.bgg@...il.com>,
Rob Herring <robh+dt@...nel.org>
CC: Chun-Kuang Hu <chunkuang.hu@...nel.org>,
Philipp Zabel <p.zabel@...gutronix.de>,
David Airlie <airlied@...il.com>,
Daniel Vetter <daniel@...ll.ch>, Fei Shao <fshao@...omium.org>,
Sean Paul <sean@...rly.run>,
Johnson Wang <johnson.wang@...iatek.corp-partner.google.com>,
"Nancy . Lin" <nancy.lin@...iatek.com>,
Moudy Ho <moudy.ho@...iatek.com>,
Hsiao Chien Sung <shawn.sung@...iatek.com>,
"Jason-JH . Lin" <jason-jh.lin@...iatek.com>,
Nathan Lu <nathan.lu@...iatek.com>,
<devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
<dri-devel@...ts.freedesktop.org>,
<linux-mediatek@...ts.infradead.org>,
<linux-arm-kernel@...ts.infradead.org>
Subject: [PATCH v10 15/24] drm/mediatek: Remove ineffectual power management codes
Display modules will be powered on when .atomic_enable(),
there is no need to do it again in mtk_crtc_ddp_hw_init().
Besides, the DRM devices are created manually when mtk-mmsys
is probed and there is no power domain linked to it.
Fixes: 119f5173628a ("drm/mediatek: Add DRM Driver for Mediatek SoC MT8173.")
Signed-off-by: Hsiao Chien Sung <shawn.sung@...iatek.com>
---
drivers/gpu/drm/mediatek/mtk_drm_crtc.c | 18 +++---------------
1 file changed, 3 insertions(+), 15 deletions(-)
diff --git a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
index bc4cc75cca18..c7edd80be428 100644
--- a/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
+++ b/drivers/gpu/drm/mediatek/mtk_drm_crtc.c
@@ -6,7 +6,6 @@
#include <linux/clk.h>
#include <linux/dma-mapping.h>
#include <linux/mailbox_controller.h>
-#include <linux/pm_runtime.h>
#include <linux/soc/mediatek/mtk-cmdq.h>
#include <linux/soc/mediatek/mtk-mmsys.h>
#include <linux/soc/mediatek/mtk-mutex.h>
@@ -362,22 +361,16 @@ static int mtk_crtc_ddp_hw_init(struct mtk_drm_crtc *mtk_crtc, struct drm_atomic
drm_connector_list_iter_end(&conn_iter);
}
- ret = pm_runtime_resume_and_get(crtc->dev->dev);
- if (ret < 0) {
- DRM_ERROR("Failed to enable power domain: %d\n", ret);
- return ret;
- }
-
ret = mtk_mutex_prepare(mtk_crtc->mutex);
if (ret < 0) {
DRM_ERROR("Failed to enable mutex clock: %d\n", ret);
- goto err_pm_runtime_put;
+ goto error;
}
ret = mtk_crtc_ddp_clk_enable(mtk_crtc);
if (ret < 0) {
DRM_ERROR("Failed to enable component clocks: %d\n", ret);
- goto err_mutex_unprepare;
+ goto error;
}
for (i = 0; i < mtk_crtc->ddp_comp_nr - 1; i++) {
@@ -426,16 +419,13 @@ static int mtk_crtc_ddp_hw_init(struct mtk_drm_crtc *mtk_crtc, struct drm_atomic
return 0;
-err_mutex_unprepare:
+error:
mtk_mutex_unprepare(mtk_crtc->mutex);
-err_pm_runtime_put:
- pm_runtime_put(crtc->dev->dev);
return ret;
}
static void mtk_crtc_ddp_hw_fini(struct mtk_drm_crtc *mtk_crtc)
{
- struct drm_device *drm = mtk_crtc->base.dev;
struct drm_crtc *crtc = &mtk_crtc->base;
int i;
@@ -465,8 +455,6 @@ static void mtk_crtc_ddp_hw_fini(struct mtk_drm_crtc *mtk_crtc)
mtk_crtc_ddp_clk_disable(mtk_crtc);
mtk_mutex_unprepare(mtk_crtc->mutex);
- pm_runtime_put(drm->dev);
-
if (crtc->state->event && !crtc->state->active) {
spin_lock_irq(&crtc->dev->event_lock);
drm_crtc_send_vblank_event(crtc, crtc->state->event);
--
2.18.0
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