From df3b919286981bd00d115569fd431d4266731f47 Mon Sep 17 00:00:00 2001 From: =?utf8?q?Ville=20Syrj=C3=A4l=C3=A4?= Date: Tue, 6 Jun 2023 22:14:53 +0300 Subject: [PATCH] drm/i915/dsb: Introduce intel_dsb_noop() MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit 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 --- 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 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); -- 2.30.2