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imx-drm: parallel-display: Fix DPMS default state. 

If connector->dpms is left untouched, it defaults
to DRM_MODE_DPMS_ON (0).

As a result, drm_helper_connector_dpms will exit when
it will be asked to set the state to DRM_MODE_DPMS_ON,
because it is already set.

That issue prevented displays from turning on at boot.

Signed-off-by: Denis Carikli <denis@eukrea.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
hifive-unleashed-5.1
Denis Carikli 2014-06-17 15:34:51 +02:00 committed by Greg Kroah-Hartman
parent b28e7d5807
commit c026a3f397
1 changed files with 7 additions and 0 deletions
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7
drivers/staging/imx-drm/parallel-display.c
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@ -173,6 +173,13 @@ static int imx_pd_register(struct drm_device *drm,
if (ret)
return ret;
/* set the connector's dpms to OFF so that
* drm_helper_connector_dpms() won't return
* immediately since the current state is ON
* at this point.
*/
imxpd->connector.dpms = DRM_MODE_DPMS_OFF;
drm_encoder_helper_add(&imxpd->encoder, &imx_pd_encoder_helper_funcs);
drm_encoder_init(drm, &imxpd->encoder, &imx_pd_encoder_funcs,
DRM_MODE_ENCODER_NONE);