From: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
Add a helper for emitting a number of DSB NOOPs commands.
Signed-off-by: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
---
drivers/gpu/drm/i915/display/intel_dsb.c | 9 +++++++++
drivers/gpu/drm/i915/display/intel_dsb.h | 1 +
2 files changed, 10 insertions(+)
diff --git a/drivers/gpu/drm/i915/display/intel_dsb.c b/drivers/gpu/drm/i915/display/intel_dsb.c
index 22c716ee75e2..4ef799c087b4 100644
--- a/drivers/gpu/drm/i915/display/intel_dsb.c
+++ b/drivers/gpu/drm/i915/display/intel_dsb.c
@@ -234,6 +234,15 @@ void intel_dsb_reg_write(struct intel_dsb *dsb,
}
}
+void intel_dsb_noop(struct intel_dsb *dsb, int count)
+{
+ int i;
+
+ for (i = 0; i < count; i++)
+ intel_dsb_emit(dsb, 0,
+ DSB_OPCODE_NOOP << DSB_OPCODE_SHIFT);
+}
+
static void intel_dsb_align_tail(struct intel_dsb *dsb)
{
u32 aligned_tail, tail;
diff --git a/drivers/gpu/drm/i915/display/intel_dsb.h b/drivers/gpu/drm/i915/display/intel_dsb.h
index b8148b47022d..5a08bc21beda 100644
--- a/drivers/gpu/drm/i915/display/intel_dsb.h
+++ b/drivers/gpu/drm/i915/display/intel_dsb.h
@@ -19,6 +19,7 @@ void intel_dsb_finish(struct intel_dsb *dsb);
void intel_dsb_cleanup(struct intel_dsb *dsb);
void intel_dsb_reg_write(struct intel_dsb *dsb,
i915_reg_t reg, u32 val);
+void intel_dsb_noop(struct intel_dsb *dsb, int count);
void intel_dsb_commit(struct intel_dsb *dsb,
bool wait_for_vblank);
void intel_dsb_wait(struct intel_dsb *dsb);
--
2.39.3
