From: Leonard Crestez <leonard.crestez@nxp.com>
To: Stefan Agner <stefan@agner.ch>, Marek Vasut <marex@denx.de>,
Shawn Guo <shawnguo@kernel.org>
Cc: Philipp Zabel <p.zabel@pengutronix.de>,
Robert Chiras <robert.chiras@nxp.com>,
Fabio Estevam <fabio.estevam@nxp.com>,
Anson Huang <Anson.Huang@nxp.com>,
dri-devel@lists.freedesktop.org,
Dong Aisheng <aisheng.dong@nxp.com>,
linux-imx@nxp.com, kernel@pengutronix.de,
linux-kernel@vger.kernel.org
Subject: [PATCH v4 3/5] drm/mxsfb: Add pm_runtime calls to pipe_enable/disable
Date: Wed, 8 Aug 2018 19:09:00 +0300 [thread overview]
Message-ID: <5b434a3d8b2968552e9bdff9eb5c78266c3bb28b.1533743954.git.leonard.crestez@nxp.com> (raw)
In-Reply-To: <cover.1533743954.git.leonard.crestez@nxp.com>
Adding lcdif nodes to a power domain currently results in
black/corrupted screens or hangs because power is not correctly enabled
when required.
Ensure power is on when display is active by adding
pm_runtime_get/put_sync to mxsfb_pipe_enable/disable.
Signed-off-by: Leonard Crestez <leonard.crestez@nxp.com>
Reviewed-by: Stefan Agner <stefan@agner.ch>
---
drivers/gpu/drm/mxsfb/mxsfb_drv.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/drivers/gpu/drm/mxsfb/mxsfb_drv.c b/drivers/gpu/drm/mxsfb/mxsfb_drv.c
index ffe5137ccaf8..68d79f5dc0d3 100644
--- a/drivers/gpu/drm/mxsfb/mxsfb_drv.c
+++ b/drivers/gpu/drm/mxsfb/mxsfb_drv.c
@@ -101,23 +101,27 @@ static const struct drm_mode_config_funcs mxsfb_mode_config_funcs = {
static void mxsfb_pipe_enable(struct drm_simple_display_pipe *pipe,
struct drm_crtc_state *crtc_state,
struct drm_plane_state *plane_state)
{
struct mxsfb_drm_private *mxsfb = drm_pipe_to_mxsfb_drm_private(pipe);
+ struct drm_device *drm = pipe->plane.dev;
+ pm_runtime_get_sync(drm->dev);
drm_panel_prepare(mxsfb->panel);
mxsfb_crtc_enable(mxsfb);
drm_panel_enable(mxsfb->panel);
}
static void mxsfb_pipe_disable(struct drm_simple_display_pipe *pipe)
{
struct mxsfb_drm_private *mxsfb = drm_pipe_to_mxsfb_drm_private(pipe);
+ struct drm_device *drm = pipe->plane.dev;
drm_panel_disable(mxsfb->panel);
mxsfb_crtc_disable(mxsfb);
drm_panel_unprepare(mxsfb->panel);
+ pm_runtime_put_sync(drm->dev);
}
static void mxsfb_pipe_update(struct drm_simple_display_pipe *pipe,
struct drm_plane_state *plane_state)
{
--
2.17.1
next prev parent reply other threads:[~2018-08-08 16:09 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-08-08 16:08 [PATCH v4 0/5] drm/mxsfb: Fix runtime PM for unpowering lcdif block Leonard Crestez
2018-08-08 16:08 ` [PATCH v4 1/5] drm/mxsfb: Move axi clk enable/disable to crtc enable/disable Leonard Crestez
2018-08-08 18:57 ` Stefan Agner
2018-08-13 13:19 ` Leonard Crestez
2018-08-08 16:08 ` [PATCH v4 2/5] drm/mxsfb: Fix initial corrupt frame when activating display Leonard Crestez
2018-08-08 18:58 ` Stefan Agner
2018-08-08 16:09 ` Leonard Crestez [this message]
2018-08-08 16:09 ` [PATCH v4 4/5] drm/mxsfb: Add PM_SLEEP support Leonard Crestez
2018-08-08 16:09 ` [PATCH v4 5/5] drm/mxsfb: Switch to drm_atomic_helper_commit_tail_rpm Leonard Crestez
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