Add support for icl pipe degamma and gamma.
v2: Removed a POSTING_READ and corrected the Bit
Definition as per Maarten's comments.
v3: Addressed Matt's review comments. Removed rmw patterns
as suggested by Matt.
v4: Fixed Matt's review comments.
v5: Corrected macro alignment as per Jani Nikula's comments.
Addressed Ville and Matt's review comments.
v6: Merged ICL degamma handling with GLK and dropped ICL
degamma function as per Ville and Matt's comments.
v7: updated gamma_mode state with pre csc gammma and post
gamma enabling in intel_color_check to align with atomic.
v8: Addressed Maarten's review comments.
Signed-off-by: Uma Shankar <uma.shankar@xxxxxxxxx>
Reviewed-by: Maarten Lankhorst <maarten.lankhorst@xxxxxxxxxxxxxxx>
---
drivers/gpu/drm/i915/i915_reg.h | 12 +++++++-----
drivers/gpu/drm/i915/intel_color.c | 21 +++++++++++++++++++--
2 files changed, 26 insertions(+), 7 deletions(-)
diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
index 11bf60d..13a207a 100644
--- a/drivers/gpu/drm/i915/i915_reg.h
+++ b/drivers/gpu/drm/i915/i915_reg.h
@@ -7111,11 +7111,13 @@ enum {
#define _GAMMA_MODE_A 0x4a480
#define _GAMMA_MODE_B 0x4ac80
#define GAMMA_MODE(pipe) _MMIO_PIPE(pipe, _GAMMA_MODE_A, _GAMMA_MODE_B)
-#define GAMMA_MODE_MODE_MASK (3 << 0)
-#define GAMMA_MODE_MODE_8BIT (0 << 0)
-#define GAMMA_MODE_MODE_10BIT (1 << 0)
-#define GAMMA_MODE_MODE_12BIT (2 << 0)
-#define GAMMA_MODE_MODE_SPLIT (3 << 0)
+#define PRE_CSC_GAMMA_ENABLE (1 << 31)
+#define POST_CSC_GAMMA_ENABLE (1 << 30)
+#define GAMMA_MODE_MODE_MASK (3 << 0)
+#define GAMMA_MODE_MODE_8BIT (0 << 0)
+#define GAMMA_MODE_MODE_10BIT (1 << 0)
+#define GAMMA_MODE_MODE_12BIT (2 << 0)
+#define GAMMA_MODE_MODE_SPLIT (3 << 0)
/* DMC/CSR */
#define CSR_PROGRAM(i) _MMIO(0x80000 + (i) * 4)
diff --git a/drivers/gpu/drm/i915/intel_color.c b/drivers/gpu/drm/i915/intel_color.c
index e391899..c5bd0f9 100644
--- a/drivers/gpu/drm/i915/intel_color.c
+++ b/drivers/gpu/drm/i915/intel_color.c
@@ -571,6 +571,17 @@ static void glk_load_luts(const struct intel_crtc_state *crtc_state)
bdw_load_gamma_lut(crtc_state, 0);
}
+static void icl_load_luts(const struct intel_crtc_state *crtc_state)
+{
+ glk_load_degamma_lut(crtc_state);
+
+ if (crtc_state_is_legacy_gamma(crtc_state))
+ i9xx_load_luts(crtc_state);
+ else
+ /* ToDo: Add support for multi segment gamma LUT */
+ bdw_load_gamma_lut(crtc_state, 0);
+}
+
static void cherryview_load_luts(const struct intel_crtc_state *crtc_state)
{
struct intel_crtc *crtc = to_intel_crtc(crtc_state->base.crtc);
@@ -760,7 +771,11 @@ int intel_color_check(struct intel_crtc_state *crtc_state)
drm_color_lut_check(gamma_lut, gamma_tests))
return -EINVAL;
- if (INTEL_GEN(dev_priv) >= 10 || IS_GEMINILAKE(dev_priv))
+ if (INTEL_GEN(dev_priv) >= 11)
+ crtc_state->gamma_mode = GAMMA_MODE_MODE_10BIT |
+ PRE_CSC_GAMMA_ENABLE |
+ POST_CSC_GAMMA_ENABLE;
+ else if (INTEL_GEN(dev_priv) >= 10 || IS_GEMINILAKE(dev_priv))
crtc_state->gamma_mode = GAMMA_MODE_MODE_10BIT;
else if (INTEL_GEN(dev_priv) >= 9 || IS_BROADWELL(dev_priv))
crtc_state->gamma_mode = GAMMA_MODE_MODE_SPLIT;
@@ -784,7 +799,9 @@ void intel_color_init(struct intel_crtc *crtc)
dev_priv->display.color_commit = i9xx_color_commit;
} else {
- if (IS_CANNONLAKE(dev_priv) || IS_GEMINILAKE(dev_priv))
+ if (IS_ICELAKE(dev_priv))
+ dev_priv->display.load_luts = icl_load_luts;
+ else if (IS_CANNONLAKE(dev_priv) || IS_GEMINILAKE(dev_priv))
dev_priv->display.load_luts = glk_load_luts;
else if (INTEL_GEN(dev_priv) >= 9 || IS_BROADWELL(dev_priv))
dev_priv->display.load_luts = broadwell_load_luts;
--
1.9.1
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