[Intel-gfx] [PATCH 3/3] drm/i915/dg1: Drop final use of IS_DG1_GRAPHICS_STEP

[Matt Roper <matthew.d.roper@intel.com>]

All production DG1 hardware has graphics stepping B0; there is no such
thing as C0.  As such, we can simplify

        IS_DG1_GRAPHICS_STEP(uncore->i915, STEP_A0, STEP_C0)

to just match DG1 in general.

Bspec: 44463
Signed-off-by: Matt Roper <matthew.d.roper@intel.com>
---
 drivers/gpu/drm/i915/gt/intel_region_lmem.c | 2 +-
 drivers/gpu/drm/i915/i915_drv.h             | 3 ---
 2 files changed, 1 insertion(+), 4 deletions(-)

diff --git a/drivers/gpu/drm/i915/gt/intel_region_lmem.c b/drivers/gpu/drm/i915/gt/intel_region_lmem.c
index f3ad93db0b21..89fdfc67f8d1 100644
--- a/drivers/gpu/drm/i915/gt/intel_region_lmem.c
+++ b/drivers/gpu/drm/i915/gt/intel_region_lmem.c
@@ -158,7 +158,7 @@ static const struct intel_memory_region_ops intel_region_lmem_ops = {
 static bool get_legacy_lowmem_region(struct intel_uncore *uncore,
 				     u64 *start, u32 *size)
 {
-	if (!IS_DG1_GRAPHICS_STEP(uncore->i915, STEP_A0, STEP_C0))
+	if (!IS_DG1(uncore->i915))
 		return false;
 
 	*start = 0;
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index 57b84dbca084..495788e18b77 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -656,9 +656,6 @@ IS_SUBPLATFORM(const struct drm_i915_private *i915,
 #define IS_RKL_DISPLAY_STEP(p, since, until) \
 	(IS_ROCKETLAKE(p) && IS_DISPLAY_STEP(p, since, until))
 
-#define IS_DG1_GRAPHICS_STEP(p, since, until) \
-	(IS_DG1(p) && IS_GRAPHICS_STEP(p, since, until))
-
 #define IS_ADLS_DISPLAY_STEP(__i915, since, until) \
 	(IS_ALDERLAKE_S(__i915) && \
 	 IS_DISPLAY_STEP(__i915, since, until))
-- 
2.39.1