Discussion:
[PATCH v3] drm/sun4i: Implement drm_driver lastclose to restore fbdev console
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Jonathan Liu
2017-07-10 06:55:04 UTC
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The drm_driver lastclose callback is called when the last userspace
DRM client has closed. Call drm_fbdev_cma_restore_mode to restore
the fbdev console otherwise the fbdev console will stop working.

Fixes: 9026e0d122ac ("drm: Add Allwinner A10 Display Engine support")
Cc: ***@vger.kernel.org
Signed-off-by: Jonathan Liu <***@gmail.com>
Reviewed-by: Chen-Yu Tsai <***@csie.org>
---
Changes for v3:
- Add 'Fixes:' tag
- Add CC to stable
- Add 'Reviewed-by: Chen-Yu Tsai <***@csie.org>'

Changes for v2:
- Rename sun4i_drm_lastclose to sun4i_drv_lastclose

drivers/gpu/drm/sun4i/sun4i_drv.c | 8 ++++++++
1 file changed, 8 insertions(+)

diff --git a/drivers/gpu/drm/sun4i/sun4i_drv.c b/drivers/gpu/drm/sun4i/sun4i_drv.c
index abc7d8fe06b4..a45a627283a1 100644
--- a/drivers/gpu/drm/sun4i/sun4i_drv.c
+++ b/drivers/gpu/drm/sun4i/sun4i_drv.c
@@ -25,12 +25,20 @@
#include "sun4i_framebuffer.h"
#include "sun4i_tcon.h"

+static void sun4i_drv_lastclose(struct drm_device *dev)
+{
+ struct sun4i_drv *drv = dev->dev_private;
+
+ drm_fbdev_cma_restore_mode(drv->fbdev);
+}
+
DEFINE_DRM_GEM_CMA_FOPS(sun4i_drv_fops);

static struct drm_driver sun4i_drv_driver = {
.driver_features = DRIVER_GEM | DRIVER_MODESET | DRIVER_PRIME | DRIVER_ATOMIC,

/* Generic Operations */
+ .lastclose = sun4i_drv_lastclose,
.fops = &sun4i_drv_fops,
.name = "sun4i-drm",
.desc = "Allwinner sun4i Display Engine",
--
2.13.2
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Olliver Schinagl
2017-07-10 14:22:21 UTC
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Hey Jonathan,

since I reported this to you on IRC, it's only fair that you can have my:

Tested-by: Olliver Schinagl <***@schinagl.nl>

For those interessted, I've tested it on an Olimex OLinuXino Lime2 with
their 4.3 LCD.

Olliver
Post by Jonathan Liu
The drm_driver lastclose callback is called when the last userspace
DRM client has closed. Call drm_fbdev_cma_restore_mode to restore
the fbdev console otherwise the fbdev console will stop working.
Fixes: 9026e0d122ac ("drm: Add Allwinner A10 Display Engine support")
---
- Add 'Fixes:' tag
- Add CC to stable
- Rename sun4i_drm_lastclose to sun4i_drv_lastclose
drivers/gpu/drm/sun4i/sun4i_drv.c | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/drivers/gpu/drm/sun4i/sun4i_drv.c b/drivers/gpu/drm/sun4i/sun4i_drv.c
index abc7d8fe06b4..a45a627283a1 100644
--- a/drivers/gpu/drm/sun4i/sun4i_drv.c
+++ b/drivers/gpu/drm/sun4i/sun4i_drv.c
@@ -25,12 +25,20 @@
#include "sun4i_framebuffer.h"
#include "sun4i_tcon.h"
+static void sun4i_drv_lastclose(struct drm_device *dev)
+{
+ struct sun4i_drv *drv = dev->dev_private;
+
+ drm_fbdev_cma_restore_mode(drv->fbdev);
+}
+
DEFINE_DRM_GEM_CMA_FOPS(sun4i_drv_fops);
static struct drm_driver sun4i_drv_driver = {
.driver_features = DRIVER_GEM | DRIVER_MODESET | DRIVER_PRIME | DRIVER_ATOMIC,
/* Generic Operations */
+ .lastclose = sun4i_drv_lastclose,
.fops = &sun4i_drv_fops,
.name = "sun4i-drm",
.desc = "Allwinner sun4i Display Engine",
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Maxime Ripard
2017-07-11 19:21:31 UTC
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Post by Jonathan Liu
The drm_driver lastclose callback is called when the last userspace
DRM client has closed. Call drm_fbdev_cma_restore_mode to restore
the fbdev console otherwise the fbdev console will stop working.
Fixes: 9026e0d122ac ("drm: Add Allwinner A10 Display Engine support")
Queued for 4.14, thanks!
Maxime
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Embedded Linux and Kernel engineering
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Chen-Yu Tsai
2017-07-12 02:40:16 UTC
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On Wed, Jul 12, 2017 at 3:21 AM, Maxime Ripard
Post by Maxime Ripard
Post by Jonathan Liu
The drm_driver lastclose callback is called when the last userspace
DRM client has closed. Call drm_fbdev_cma_restore_mode to restore
the fbdev console otherwise the fbdev console will stop working.
Fixes: 9026e0d122ac ("drm: Add Allwinner A10 Display Engine support")
Queued for 4.14, thanks!
May we have this sooner? Like 4.13? :)

ChenYu
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Maxime Ripard
2017-07-17 06:22:35 UTC
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Post by Chen-Yu Tsai
On Wed, Jul 12, 2017 at 3:21 AM, Maxime Ripard
Post by Maxime Ripard
Post by Jonathan Liu
The drm_driver lastclose callback is called when the last userspace
DRM client has closed. Call drm_fbdev_cma_restore_mode to restore
the fbdev console otherwise the fbdev console will stop working.
Fixes: 9026e0d122ac ("drm: Add Allwinner A10 Display Engine support")
Queued for 4.14, thanks!
May we have this sooner? Like 4.13? :)
Yes, of course :)

I queued it for 4.13.

Thanks!
Maxime
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Maxime Ripard, Free Electrons
Embedded Linux and Kernel engineering
http://free-electrons.com
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