On Wed, 15 Feb 2017, Bob Paauwe <bob.j.paauwe@xxxxxxxxx> wrote:
> On Wed, 8 Feb 2017 16:20:56 +0530
> Vidya Srinivas <vidya.srinivas@xxxxxxxxx> wrote:
>
>> From: Uma Shankar <uma.shankar@xxxxxxxxx>
>>
>> Disable device ready before MIPI port shutdown command.
>> This helps to avoid mipi split screen issues.
>>
>> Signed-off-by: Uma Shankar <uma.shankar@xxxxxxxxx>
>> Signed-off-by: Vidya Srinivas <vidya.srinivas@xxxxxxxxx>
>
> Reviewed-by: Bob Paauwe <bob.j.paauwe@xxxxxxxxx>
Pushed this one patch to dinq, thanks for the patch and review.
BR,
Jani.
>
>> ---
>> drivers/gpu/drm/i915/intel_dsi.c | 11 +++++++++++
>> 1 file changed, 11 insertions(+)
>>
>> diff --git a/drivers/gpu/drm/i915/intel_dsi.c b/drivers/gpu/drm/i915/intel_dsi.c
>> index 808158f..12aeee1 100644
>> --- a/drivers/gpu/drm/i915/intel_dsi.c
>> +++ b/drivers/gpu/drm/i915/intel_dsi.c
>> @@ -603,6 +603,8 @@ static void intel_dsi_pre_disable(struct intel_encoder *encoder,
>> struct intel_crtc_state *old_crtc_state,
>> struct drm_connector_state *old_conn_state)
>> {
>> + struct drm_device *dev = encoder->base.dev;
>> + struct drm_i915_private *dev_priv = dev->dev_private;
>> struct intel_dsi *intel_dsi = enc_to_intel_dsi(&encoder->base);
>> enum port port;
>>
>> @@ -610,6 +612,15 @@ static void intel_dsi_pre_disable(struct intel_encoder *encoder,
>>
>> intel_panel_disable_backlight(intel_dsi->attached_connector);
>>
>> + /*
>> + * Disable Device ready before the port shutdown in order
>> + * to avoid split screen
>> + */
>> + if (IS_BROXTON(dev_priv)) {
>> + for_each_dsi_port(port, intel_dsi->ports)
>> + I915_WRITE(MIPI_DEVICE_READY(port), 0);
>> + }
>> +
>> if (is_vid_mode(intel_dsi)) {
>> /* Send Shutdown command to the panel in LP mode */
>> for_each_dsi_port(port, intel_dsi->ports)
--
Jani Nikula, Intel Open Source Technology Center
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