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drm/i915/dsb: Introduce intel_dsb_noop()

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

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230606191504.18099-9-ville.syrjala@linux.intel.com
Reviewed-by: Uma Shankar <uma.shankar@intel.com>
This commit is contained in:
Ville Syrjälä 2023-06-06 22:14:53 +03:00
parent 0c1c7a6499
commit df3b919286
2 changed files with 10 additions and 0 deletions
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9
drivers/gpu/drm/i915/display/intel_dsb.c
View File

@ -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;

1
drivers/gpu/drm/i915/display/intel_dsb.h
View File

@ -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);