Hi Laurent,
On 2017-11-09 11:45, Laurent Pinchart wrote:
Hi Stefan,
Thank you for the patch.
On Thursday, 9 November 2017 11:14:36 EET Stefan Agner wrote:
I notice you have changed the subject line. I'm not sure if the new wording is better, as this patch doesn't set DPMS to off, it instead skips setting it manually. How about "drm/fsl-dcu: Don't set connector DPMS property manually" or "drm/fsl-dcu: Don't set DPMS property before initializing connector" ?
In a first version I also added:
connector->dpms = DRM_MODE_DPMS_OFF;
before calling drm_connector_init, but I think this is not really required so removed it again, but forgot to adjust the subject.
Will reset to "drm/fsl-dcu: Don't set connector DPMS property"
Additionally, would you mind retaining the authorship of the patch I have originally submitted ?
Yeah, sorry, will send v2 with proper authorship and subject.
-- Stefan
Since commit 4a97a3da420b ("drm: Don't update property values for atomic drivers") atomic drivers must not update property values as properties are read from the state instead. To catch remaining users, the drm_object_property_set_value() function now throws a warning when called by atomic drivers on non-immutable properties, and we hit that warning when creating connectors.
The easy fix is to just remove the drm_object_property_set_value() as it is used here to set the initial value of the connector's DPMS property to OFF. The DPMS property applies on top of the connector's state crtc pointer (initialized to NULL) that is the main connector on/off control, and should thus default to ON.
Fixes: 4a97a3da420b ("drm: Don't update property values for atomic drivers") Cc: stable@vger.kernel.org Signed-off-by: Laurent Pinchart laurent.pinchart+renesas@ideasonboard.com Signed-off-by: Stefan Agner stefan@agner.ch
drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_rgb.c | 5 ----- 1 file changed, 5 deletions(-)
diff --git a/drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_rgb.c b/drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_rgb.c index edd7d8127d19..c54806d08dd7 100644 --- a/drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_rgb.c +++ b/drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_rgb.c @@ -102,7 +102,6 @@ static int fsl_dcu_attach_panel(struct fsl_dcu_drm_device *fsl_dev, { struct drm_encoder *encoder = &fsl_dev->encoder; struct drm_connector *connector = &fsl_dev->connector.base;
- struct drm_mode_config *mode_config = &fsl_dev->drm->mode_config;
Oops, I had missed that, sorry.
int ret;
fsl_dev->connector.encoder = encoder; @@ -122,10 +121,6 @@ static int fsl_dcu_attach_panel(struct fsl_dcu_drm_device *fsl_dev, if (ret < 0) goto err_sysfs;
- drm_object_property_set_value(&connector->base,
mode_config->dpms_property,DRM_MODE_DPMS_OFF);- ret = drm_panel_attach(panel, connector); if (ret) { dev_err(fsl_dev->dev, "failed to attach panel\n");