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 <abhin...@codeaurora.org>
---
drivers/gpu/drm/msm/dsi/dsi_host.c | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/msm/dsi/dsi_host.c
b/drivers/gpu/drm/msm/dsi/dsi_host.c
index 7a03a94..ad5ee17 100644
--- a/drivers/gpu/drm/msm/dsi/dsi_host.c
+++ b/drivers/gpu/drm/msm/dsi/dsi_host.c
@@ -173,6 +173,7 @@ struct msm_dsi_host {
bool registered;
bool power_on;
+ bool enabled;
int irq;
};
@@ -1001,7 +1002,7 @@ 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);
@@ -2203,7 +2204,7 @@ int msm_dsi_host_enable(struct mipi_dsi_host *host)
* pm_runtime_put_autosuspend(&msm_host->pdev->dev);
* }
*/
-
+ msm_host->enabled = true;
return 0;
}
@@ -2211,6 +2212,7 @@ 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);
--
The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,
a Linux Foundation Collaborative Project
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