Commit df3b9192 authored by Ville Syrjälä's avatar Ville Syrjälä
Browse files

drm/i915/dsb: Introduce intel_dsb_noop() 



Add a helper for emitting a number of DSB NOOPs commands.

Signed-off-by: default avatarVille Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230606191504.18099-9-ville.syrjala@linux.intel.com


Reviewed-by: default avatarUma Shankar <uma.shankar@intel.com>
parent 0c1c7a64

drivers/gpu/drm/i915/display/intel_dsb.c

+9 −0
Original line number Diff line number Diff line
@@ -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;

drivers/gpu/drm/i915/display/intel_dsb.h

+1 −0
Original line number Diff line number Diff line
@@ -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);