redonkable/alistair23-linux
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drm/msm/dsi: check video mode engine status before waiting

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Make sure the video mode engine is on before waiting
for the video done interrupt.

Changes in v4:
- Move setting enabled to false earlier

Changes in v3:
- Move the return value check to another
  patch

Changes in v2:
- Replace pr_err with dev_err
- Changed error message

Signed-off-by: Abhinav Kumar <abhinavk@codeaurora.org>
Signed-off-by: Sean Paul <seanpaul@chromium.org>
Signed-off-by: Rob Clark <robdclark@gmail.com>
This commit is contained in:
Abhinav Kumar 2018-04-17 13:50:18 -07:00 committed by Rob Clark
parent a6bb80f8ef
commit a56896c56e
1 changed files with 4 additions and 2 deletions
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6
drivers/gpu/drm/msm/dsi/dsi_host.c
View file

@ -173,6 +173,7 @@ struct msm_dsi_host {
bool registered;
bool power_on;
bool enabled;
int irq;
};
@ -1007,7 +1008,7 @@ static void dsi_wait4video_eng_busy(struct msm_dsi_host *msm_host)
if (!(msm_host->mode_flags & MIPI_DSI_MODE_VIDEO))
return;
if (msm_host->power_on) {
if (msm_host->power_on && msm_host->enabled) {
dsi_wait4video_done(msm_host);
/* delay 4 ms to skip BLLP */
usleep_range(2000, 4000);
@ -2209,7 +2210,7 @@ int msm_dsi_host_enable(struct mipi_dsi_host *host)
* pm_runtime_put_autosuspend(&msm_host->pdev->dev);
* }
*/
msm_host->enabled = true;
return 0;
}
@ -2217,6 +2218,7 @@ int msm_dsi_host_disable(struct mipi_dsi_host *host)
{
struct msm_dsi_host *msm_host = to_msm_dsi_host(host);
msm_host->enabled = false;
dsi_op_mode_config(msm_host,
!!(msm_host->mode_flags & MIPI_DSI_MODE_VIDEO), false);