drm/msm/sde: wait for ctl reset before kickoff in video mode
Need to check for and wait for the unlikely event of a hardware
initiated CTL reset in video mode. Need to wait for the reset to
complete before initiating the next kickoff. If CTL reset fails
to complete, initiate a panic.
CRs-Fixed: 2005394
Change-Id: I27dfaf602a9c2ba2faacabe723a9593a39ed891e
Signed-off-by: Lloyd Atkinson <latkinso@codeaurora.org>
diff --git a/drivers/gpu/drm/msm/sde/sde_hw_ctl.h b/drivers/gpu/drm/msm/sde/sde_hw_ctl.h
index 670a03d..4d1170e 100644
--- a/drivers/gpu/drm/msm/sde/sde_hw_ctl.h
+++ b/drivers/gpu/drm/msm/sde/sde_hw_ctl.h
@@ -107,6 +107,17 @@
int (*reset)(struct sde_hw_ctl *c);
+ /*
+ * wait_reset_status - checks ctl reset status
+ * @ctx : ctl path ctx pointer
+ *
+ * This function checks the ctl reset status bit.
+ * If the reset bit is set, it keeps polling the status till the hw
+ * reset is complete.
+ * Returns: 0 on success or -error if reset incomplete within interval
+ */
+ int (*wait_reset_status)(struct sde_hw_ctl *ctx);
+
uint32_t (*get_bitmask_sspp)(struct sde_hw_ctl *ctx,
enum sde_sspp blk);