drm/i915/display/dg2: Set CD clock squashing registers
Set CD clock squashing registers based on selected CD clock.
v2: use slk_cdclk_decimal() to compute decimal values instead of a
specific table (Ville)
Set waveform based on CD clock table (Ville)
Drop unnecessary local variable (Ville)
v3: Correct function naming (Ville)
Correct if-else structure (Ville)
[v4: vsyrjala: Fix spaces vs. tabs]
[v5: vsyrjala: Fix cd2x divider calculation (Uma),
Add warn to waveform lookup (Uma),
Handle bypass freq in waveform lookup,
Generalize waveform handling in bxt_set_cdclk()]
Signed-off-by: Mika Kahola <mika.kahola@intel.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Stanislav Lisovskiy <stanislav.lisovskiy@intel.com>
Signed-off-by: Stanislav Lisovskiy <stanislav.lisovskiy@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20211119131348.725220-4-mika.kahola@intel.com
diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
index 1a135a7..9e5ccf8 100644
--- a/drivers/gpu/drm/i915/i915_reg.h
+++ b/drivers/gpu/drm/i915/i915_reg.h
@@ -10543,6 +10543,14 @@ enum skl_power_gate {
#define BXT_CDCLK_SSA_PRECHARGE_ENABLE (1 << 16)
#define CDCLK_FREQ_DECIMAL_MASK (0x7ff)
+/* CDCLK_SQUASH_CTL */
+#define CDCLK_SQUASH_CTL _MMIO(0x46008)
+#define CDCLK_SQUASH_ENABLE REG_BIT(31)
+#define CDCLK_SQUASH_WINDOW_SIZE_MASK REG_GENMASK(27, 24)
+#define CDCLK_SQUASH_WINDOW_SIZE(x) REG_FIELD_PREP(CDCLK_SQUASH_WINDOW_SIZE_MASK, (x))
+#define CDCLK_SQUASH_WAVEFORM_MASK REG_GENMASK(15, 0)
+#define CDCLK_SQUASH_WAVEFORM(x) REG_FIELD_PREP(CDCLK_SQUASH_WAVEFORM_MASK, (x))
+
/* LCPLL_CTL */
#define LCPLL1_CTL _MMIO(0x46010)
#define LCPLL2_CTL _MMIO(0x46014)
