On Fri, 2019-07-12 at 18:09 -0700, Lucas De Marchi wrote: > From: Michel Thierry <[email protected]> > > Enable Small PL for power benefit. > > Signed-off-by: Michel Thierry <[email protected]> > Signed-off-by: Lucas De Marchi <[email protected]>
Reviewed-by: Stuart Summers <[email protected]> > --- > drivers/gpu/drm/i915/gt/intel_workarounds.c | 5 +++++ > drivers/gpu/drm/i915/i915_reg.h | 3 +++ > 2 files changed, 8 insertions(+) > > diff --git a/drivers/gpu/drm/i915/gt/intel_workarounds.c > b/drivers/gpu/drm/i915/gt/intel_workarounds.c > index 347ba16346d3..f3367339f445 100644 > --- a/drivers/gpu/drm/i915/gt/intel_workarounds.c > +++ b/drivers/gpu/drm/i915/gt/intel_workarounds.c > @@ -1285,6 +1285,11 @@ rcs_engine_wa_init(struct intel_engine_cs > *engine, struct i915_wa_list *wal) > wa_write_or(wal, > GEN12_L3SQCREG2, > GEN12_LQSC_FLUSH_COHERENT_LINES); > + > + /* Wa_1406941453:tgl */ > + wa_masked_en(wal, > + SAMPLER_MODE, > + SAMPLER_ENABLE_SMALL_PL); > } > > if (IS_GEN(i915, 11)) { > diff --git a/drivers/gpu/drm/i915/i915_reg.h > b/drivers/gpu/drm/i915/i915_reg.h > index d048c349e07e..712616fcd6b3 100644 > --- a/drivers/gpu/drm/i915/i915_reg.h > +++ b/drivers/gpu/drm/i915/i915_reg.h > @@ -9009,6 +9009,9 @@ enum { > #define GEN9_DG_MIRROR_FIX_ENABLE (1 << 5) > #define GEN9_CCS_TLB_PREFETCH_ENABLE (1 << 3) > > +#define SAMPLER_MODE _MMIO(0xe18c) > +#define SAMPLER_ENABLE_SMALL_PL (1 << 15) > + > #define GEN8_ROW_CHICKEN _MMIO(0xe4f0) > #define FLOW_CONTROL_ENABLE (1 << 15) > #define PARTIAL_INSTRUCTION_SHOOTDOWN_DISABLE (1 << 8)
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