drm/i915/fbc: Polish the skl+ FBC stride override handling
Polish the FBC stride override stuff:
- just call it override_cfb_stride since it'll be used on
more gens later
- Use REG_BIT() & co. for the registers and give everything
CHICKEN_ prefix since glk+ will have a different register
for this
- Use intel_de_rmw() for the RMW
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210702204603.596-5-ville.syrjala@linux.intel.com
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
index 664970f..ce518ec 100644
--- a/drivers/gpu/drm/i915/i915_reg.h
+++ b/drivers/gpu/drm/i915/i915_reg.h
@@ -8176,8 +8176,9 @@ enum {
#define GLK_CL0_PWR_DOWN (1 << 10)
#define CHICKEN_MISC_4 _MMIO(0x4208c)
-#define FBC_STRIDE_OVERRIDE (1 << 13)
-#define FBC_STRIDE_MASK 0x1FFF
+#define CHICKEN_FBC_STRIDE_OVERRIDE REG_BIT(13)
+#define CHICKEN_FBC_STRIDE_MASK REG_GENMASK(12, 0)
+#define CHICKEN_FBC_STRIDE(x) REG_FIELD_PREP(CHICKEN_FBC_STRIDE_MASK, (x))
#define _CHICKEN_PIPESL_1_A 0x420b0
#define _CHICKEN_PIPESL_1_B 0x420b4
