* [PATCH resend] drm/panel: panel-innolux: set display off in innolux_panel_unprepare
@ 2019-01-09 6:59 Hsin-Yi, Wang
2019-01-18 17:58 ` Sean Paul
0 siblings, 1 reply; 3+ messages in thread
From: Hsin-Yi, Wang @ 2019-01-09 6:59 UTC (permalink / raw)
To: linux-arm-kernel
Cc: Thierry Reding, David Airlie, Daniel Vetter, dri-devel, linux-kernel
Move mipi_dsi_dcs_set_display_off() from innolux_panel_disable()
to innolux_panel_unprepare(), so they are consistent with
innolux_panel_enable() and innolux_panel_prepare().
This also fixes some mode check and irq timeout issue in MTK dsi code.
Since some dsi code (e.g. mtk_dsi) have following call trace:
1. drm_panel_disable(), which calls innolux_panel_disable()
2. switch to cmd mode
3. drm_panel_unprepare(), which calls innolux_panel_unprepare()
However, mtk_dsi needs to be in cmd mode to be able to send commands
(e.g. mipi_dsi_dcs_set_display_off() and mipi_dsi_dcs_enter_sleep_mode()),
so we need these functions to be called after the switch to cmd mode happens,
i.e. in innolux_panel_unprepare.
Signed-off-by: Hsin-Yi, Wang <hsinyi@chromium.org>
---
Resend for review.
---
drivers/gpu/drm/panel/panel-innolux-p079zca.c | 11 +++++------
1 file changed, 5 insertions(+), 6 deletions(-)
diff --git a/drivers/gpu/drm/panel/panel-innolux-p079zca.c b/drivers/gpu/drm/panel/panel-innolux-p079zca.c
index ca4ae45dd307..8e5724b63f1f 100644
--- a/drivers/gpu/drm/panel/panel-innolux-p079zca.c
+++ b/drivers/gpu/drm/panel/panel-innolux-p079zca.c
@@ -70,18 +70,12 @@ static inline struct innolux_panel *to_innolux_panel(struct drm_panel *panel)
static int innolux_panel_disable(struct drm_panel *panel)
{
struct innolux_panel *innolux = to_innolux_panel(panel);
- int err;
if (!innolux->enabled)
return 0;
backlight_disable(innolux->backlight);
- err = mipi_dsi_dcs_set_display_off(innolux->link);
- if (err < 0)
- DRM_DEV_ERROR(panel->dev, "failed to set display off: %d\n",
- err);
-
innolux->enabled = false;
return 0;
@@ -95,6 +89,11 @@ static int innolux_panel_unprepare(struct drm_panel *panel)
if (!innolux->prepared)
return 0;
+ err = mipi_dsi_dcs_set_display_off(innolux->link);
+ if (err < 0)
+ DRM_DEV_ERROR(panel->dev, "failed to set display off: %d\n",
+ err);
+
err = mipi_dsi_dcs_enter_sleep_mode(innolux->link);
if (err < 0) {
DRM_DEV_ERROR(panel->dev, "failed to enter sleep mode: %d\n",
--
2.18.1
^ permalink raw reply related [flat|nested] 3+ messages in thread* Re: [PATCH resend] drm/panel: panel-innolux: set display off in innolux_panel_unprepare
2019-01-09 6:59 [PATCH resend] drm/panel: panel-innolux: set display off in innolux_panel_unprepare Hsin-Yi, Wang
@ 2019-01-18 17:58 ` Sean Paul
2019-01-22 21:52 ` Sean Paul
0 siblings, 1 reply; 3+ messages in thread
From: Sean Paul @ 2019-01-18 17:58 UTC (permalink / raw)
To: Hsin-Yi, Wang
Cc: Linux ARM Kernel, Thierry Reding, David Airlie, Daniel Vetter,
dri-devel, Linux Kernel Mailing List
On Wed, Jan 9, 2019 at 1:59 AM Hsin-Yi, Wang <hsinyi@chromium.org> wrote:
>
> Move mipi_dsi_dcs_set_display_off() from innolux_panel_disable()
> to innolux_panel_unprepare(), so they are consistent with
> innolux_panel_enable() and innolux_panel_prepare().
>
> This also fixes some mode check and irq timeout issue in MTK dsi code.
>
> Since some dsi code (e.g. mtk_dsi) have following call trace:
> 1. drm_panel_disable(), which calls innolux_panel_disable()
> 2. switch to cmd mode
> 3. drm_panel_unprepare(), which calls innolux_panel_unprepare()
>
> However, mtk_dsi needs to be in cmd mode to be able to send commands
> (e.g. mipi_dsi_dcs_set_display_off() and mipi_dsi_dcs_enter_sleep_mode()),
> so we need these functions to be called after the switch to cmd mode happens,
> i.e. in innolux_panel_unprepare.
>
>
> Signed-off-by: Hsin-Yi, Wang <hsinyi@chromium.org>
Reviewed-by: Sean Paul <seanpaul@chromium.org>
> ---
> Resend for review.
> ---
> drivers/gpu/drm/panel/panel-innolux-p079zca.c | 11 +++++------
> 1 file changed, 5 insertions(+), 6 deletions(-)
>
> diff --git a/drivers/gpu/drm/panel/panel-innolux-p079zca.c b/drivers/gpu/drm/panel/panel-innolux-p079zca.c
> index ca4ae45dd307..8e5724b63f1f 100644
> --- a/drivers/gpu/drm/panel/panel-innolux-p079zca.c
> +++ b/drivers/gpu/drm/panel/panel-innolux-p079zca.c
> @@ -70,18 +70,12 @@ static inline struct innolux_panel *to_innolux_panel(struct drm_panel *panel)
> static int innolux_panel_disable(struct drm_panel *panel)
> {
> struct innolux_panel *innolux = to_innolux_panel(panel);
> - int err;
>
> if (!innolux->enabled)
> return 0;
>
> backlight_disable(innolux->backlight);
>
> - err = mipi_dsi_dcs_set_display_off(innolux->link);
> - if (err < 0)
> - DRM_DEV_ERROR(panel->dev, "failed to set display off: %d\n",
> - err);
> -
> innolux->enabled = false;
>
> return 0;
> @@ -95,6 +89,11 @@ static int innolux_panel_unprepare(struct drm_panel *panel)
> if (!innolux->prepared)
> return 0;
>
> + err = mipi_dsi_dcs_set_display_off(innolux->link);
> + if (err < 0)
> + DRM_DEV_ERROR(panel->dev, "failed to set display off: %d\n",
> + err);
> +
> err = mipi_dsi_dcs_enter_sleep_mode(innolux->link);
> if (err < 0) {
> DRM_DEV_ERROR(panel->dev, "failed to enter sleep mode: %d\n",
> --
> 2.18.1
>
^ permalink raw reply [flat|nested] 3+ messages in thread* Re: [PATCH resend] drm/panel: panel-innolux: set display off in innolux_panel_unprepare
2019-01-18 17:58 ` Sean Paul
@ 2019-01-22 21:52 ` Sean Paul
0 siblings, 0 replies; 3+ messages in thread
From: Sean Paul @ 2019-01-22 21:52 UTC (permalink / raw)
To: Sean Paul
Cc: Hsin-Yi, Wang, David Airlie, Linux Kernel Mailing List,
dri-devel, Thierry Reding, Linux ARM Kernel
On Fri, Jan 18, 2019 at 12:58:10PM -0500, Sean Paul wrote:
> On Wed, Jan 9, 2019 at 1:59 AM Hsin-Yi, Wang <hsinyi@chromium.org> wrote:
> >
> > Move mipi_dsi_dcs_set_display_off() from innolux_panel_disable()
> > to innolux_panel_unprepare(), so they are consistent with
> > innolux_panel_enable() and innolux_panel_prepare().
> >
> > This also fixes some mode check and irq timeout issue in MTK dsi code.
> >
> > Since some dsi code (e.g. mtk_dsi) have following call trace:
> > 1. drm_panel_disable(), which calls innolux_panel_disable()
> > 2. switch to cmd mode
> > 3. drm_panel_unprepare(), which calls innolux_panel_unprepare()
> >
> > However, mtk_dsi needs to be in cmd mode to be able to send commands
> > (e.g. mipi_dsi_dcs_set_display_off() and mipi_dsi_dcs_enter_sleep_mode()),
> > so we need these functions to be called after the switch to cmd mode happens,
> > i.e. in innolux_panel_unprepare.
> >
> >
> > Signed-off-by: Hsin-Yi, Wang <hsinyi@chromium.org>
>
> Reviewed-by: Sean Paul <seanpaul@chromium.org>
Applied to drm-misc-next, thanks for your patch.
Sean
>
> > ---
> > Resend for review.
> > ---
> > drivers/gpu/drm/panel/panel-innolux-p079zca.c | 11 +++++------
> > 1 file changed, 5 insertions(+), 6 deletions(-)
> >
> > diff --git a/drivers/gpu/drm/panel/panel-innolux-p079zca.c b/drivers/gpu/drm/panel/panel-innolux-p079zca.c
> > index ca4ae45dd307..8e5724b63f1f 100644
> > --- a/drivers/gpu/drm/panel/panel-innolux-p079zca.c
> > +++ b/drivers/gpu/drm/panel/panel-innolux-p079zca.c
> > @@ -70,18 +70,12 @@ static inline struct innolux_panel *to_innolux_panel(struct drm_panel *panel)
> > static int innolux_panel_disable(struct drm_panel *panel)
> > {
> > struct innolux_panel *innolux = to_innolux_panel(panel);
> > - int err;
> >
> > if (!innolux->enabled)
> > return 0;
> >
> > backlight_disable(innolux->backlight);
> >
> > - err = mipi_dsi_dcs_set_display_off(innolux->link);
> > - if (err < 0)
> > - DRM_DEV_ERROR(panel->dev, "failed to set display off: %d\n",
> > - err);
> > -
> > innolux->enabled = false;
> >
> > return 0;
> > @@ -95,6 +89,11 @@ static int innolux_panel_unprepare(struct drm_panel *panel)
> > if (!innolux->prepared)
> > return 0;
> >
> > + err = mipi_dsi_dcs_set_display_off(innolux->link);
> > + if (err < 0)
> > + DRM_DEV_ERROR(panel->dev, "failed to set display off: %d\n",
> > + err);
> > +
> > err = mipi_dsi_dcs_enter_sleep_mode(innolux->link);
> > if (err < 0) {
> > DRM_DEV_ERROR(panel->dev, "failed to enter sleep mode: %d\n",
> > --
> > 2.18.1
> >
> _______________________________________________
> dri-devel mailing list
> dri-devel@lists.freedesktop.org
> https://lists.freedesktop.org/mailman/listinfo/dri-devel
--
Sean Paul, Software Engineer, Google / Chromium OS
^ permalink raw reply [flat|nested] 3+ messages in thread
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2019-01-09 6:59 [PATCH resend] drm/panel: panel-innolux: set display off in innolux_panel_unprepare Hsin-Yi, Wang
2019-01-18 17:58 ` Sean Paul
2019-01-22 21:52 ` Sean Paul
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