From: Ville Syrjälä Date: Tue, 6 Jun 2023 19:14:53 +0000 (+0300) Subject: drm/i915/dsb: Introduce intel_dsb_noop() X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=df3b919286981bd00d115569fd431d4266731f47;p=linux.git drm/i915/dsb: Introduce intel_dsb_noop() Add a helper for emitting a number of DSB NOOPs commands. Signed-off-by: Ville Syrjälä Link: https://patchwork.freedesktop.org/patch/msgid/20230606191504.18099-9-ville.syrjala@linux.intel.com Reviewed-by: Uma Shankar --- diff --git a/drivers/gpu/drm/i915/display/intel_dsb.c b/drivers/gpu/drm/i915/display/intel_dsb.c index 22c716ee75e28..4ef799c087b46 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 b8148b47022dc..5a08bc21bedaf 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);