v3: -Rebase
v4: -Renamed intel_compare_color_lut() to intel_color_lut_equal() [Jani]
-Added the default label above the correct label [Jani]
-Corrected smatch warn "variable dereferenced before check"
[Dan Carpenter]
v5: -Added condition (!blob1 && !blob2) return true [Jani]
-Called PIPE_CONF_CHECK_COLOR_LUT inside if (!adjust) [Jani]
-Added #undef PIPE_CONF_CHECK_COLOR_LUT [Jani]
v6: -Added func intel_color_get_bit_precision() to get bit precision for
gamma and degamma lut readout depending upon platform and
corresponding to load_luts() [Ankit]
-Added debug log for color para in intel_dump_pipe_config [Jani]
-Made patch11 as patch3 [Jani]
v7: -Renamed func intel_color_get_bit_precision() to
intel_color_get_gamma_bit_precision()
-Added separate function/platform for gamma bit precision [Ville]
-Corrected checkpatch warnings
Signed-off-by: Swati Sharma <swati2.sharma@xxxxxxxxx>
---
drivers/gpu/drm/i915/intel_color.c | 166 +++++++++++++++++++++++++++++++++++
drivers/gpu/drm/i915/intel_color.h | 7 ++
drivers/gpu/drm/i915/intel_display.c | 24 +++++
3 files changed, 197 insertions(+)
diff --git a/drivers/gpu/drm/i915/intel_color.c b/drivers/gpu/drm/i915/intel_color.c
index 50b98ee..b20a2c6 100644
--- a/drivers/gpu/drm/i915/intel_color.c
+++ b/drivers/gpu/drm/i915/intel_color.c
@@ -1251,6 +1251,172 @@ static int icl_color_check(struct intel_crtc_state *crtc_state)
return 0;
}
+static int i9xx_gamma_precision(struct intel_crtc_state *crtc_state)
+{
+ if (!crtc_state->gamma_enable)
+ return 0;
+
+ switch (crtc_state->gamma_mode) {
+ case GAMMA_MODE_MODE_8BIT:
+ return 8;
+ case GAMMA_MODE_MODE_10BIT:
+ return 16;
+ default:
+ MISSING_CASE(crtc_state->gamma_mode);
+ return 0;
+ }
+}
+
+static int chv_gamma_precision(struct intel_crtc_state *crtc_state)
+{
+ if (crtc_state->cgm_mode & CGM_PIPE_MODE_GAMMA)
+ return 10;
+ else
+ return i9xx_gamma_precision(crtc_state);
+}
+
+static int ilk_gamma_precision(struct intel_crtc_state *crtc_state)
+{
+ if (!crtc_state->gamma_enable)
+ return 0;
+
+ if ((crtc_state->csc_mode & CSC_POSITION_BEFORE_GAMMA) == 0)
+ return 0;
+
+ switch (crtc_state->gamma_mode) {
+ case GAMMA_MODE_MODE_8BIT:
+ return 8;
+ case GAMMA_MODE_MODE_10BIT:
+ return 10;
+ default:
+ MISSING_CASE(crtc_state->gamma_mode);
+ return 0;
+ }
+}
+
+static int ivb_gamma_precision(struct intel_crtc_state *crtc_state)
+{
+ if (!crtc_state->gamma_enable)
+ return 0;
+
+ if ((crtc_state->csc_mode & CSC_POSITION_BEFORE_GAMMA) == 0)
+ return 0;
+
+ switch (crtc_state->gamma_mode) {
+ case GAMMA_MODE_MODE_8BIT:
+ return 8;
+ case GAMMA_MODE_MODE_SPLIT:
+ case GAMMA_MODE_MODE_10BIT:
+ return 10;
+ default:
+ MISSING_CASE(crtc_state->gamma_mode);
+ return 0;
+ }
+}
+
+static int glk_gamma_precision(struct intel_crtc_state *crtc_state)
+{
+ if (!crtc_state->gamma_enable)
+ return 0;
+
+ if ((crtc_state->csc_mode & CSC_POSITION_BEFORE_GAMMA) == 0)
+ return 0;
+
+ switch (crtc_state->gamma_mode) {
+ case GAMMA_MODE_MODE_8BIT:
+ return 8;
+ case GAMMA_MODE_MODE_10BIT:
+ return 10;
+ default:
+ MISSING_CASE(crtc_state->gamma_mode);
+ return 0;
+ }
+}
+
+static int icl_gamma_precision(struct intel_crtc_state *crtc_state)
+{
+ if ((crtc_state->gamma_mode & PRE_CSC_GAMMA_ENABLE) == 0)
+ return 0;
+
+ switch (crtc_state->gamma_mode & GAMMA_MODE_MODE_MASK) {
+ case GAMMA_MODE_MODE_8BIT:
+ return 8;
+ case GAMMA_MODE_MODE_10BIT:
+ return 10;
+ default:
+ MISSING_CASE(crtc_state->gamma_mode);
+ return 0;
+ }
+}
+
+int intel_color_get_gamma_bit_precision(struct intel_crtc_state *crtc_state)
+{
+ struct intel_crtc *crtc = to_intel_crtc(crtc_state->base.crtc);
+ struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
+
+ if (HAS_GMCH(dev_priv)) {
+ if (IS_CHERRYVIEW(dev_priv))
+ return chv_gamma_precision(crtc_state);
+ else
+ return i9xx_gamma_precision(crtc_state);
+ } else {
+ if (INTEL_GEN(dev_priv) >= 11)
+ return icl_gamma_precision(crtc_state);
+ else if (IS_CANNONLAKE(dev_priv) || IS_GEMINILAKE(dev_priv))
+ return glk_gamma_precision(crtc_state);
+ else if (INTEL_GEN(dev_priv) >= 7)
+ return ivb_gamma_precision(crtc_state);
+ else
+ return ilk_gamma_precision(crtc_state);
+ }
+
+ return 0;
+}
+
+static inline bool err_check(struct drm_color_lut *sw_lut,
+ struct drm_color_lut *hw_lut, u32 err)
+{
+ return ((abs((long)hw_lut->red - sw_lut->red)) <= err) &&
+ ((abs((long)hw_lut->blue - sw_lut->blue)) <= err) &&
+ ((abs((long)hw_lut->green - sw_lut->green)) <= err);
+}
+
+bool intel_color_lut_equal(struct drm_property_blob *blob1,
+ struct drm_property_blob *blob2,
+ u32 bit_precision)
+{
+ struct drm_color_lut *sw_lut, *hw_lut;
+ int sw_lut_size, hw_lut_size, i;
+ u32 err;
+
+ if (!blob1 && !blob2)
+ return true;
+
+ if (!blob1)
+ return true;
+
+ if (!blob2)
+ return false;
+
+ sw_lut_size = drm_color_lut_size(blob1);
+ hw_lut_size = drm_color_lut_size(blob2);
+
+ if (sw_lut_size != hw_lut_size)
+ return false;
+
+ sw_lut = blob1->data;
+ hw_lut = blob2->data;
+
+ err = 0xffff >> bit_precision;
+
+ for (i = 0; i < sw_lut_size; i++) {
+ if (!err_check(&hw_lut[i], &sw_lut[i], err))
+ return false;
+ }
+
+ return true;
+}
+
void intel_color_init(struct intel_crtc *crtc)
{
struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
diff --git a/drivers/gpu/drm/i915/intel_color.h b/drivers/gpu/drm/i915/intel_color.h
index 057e8ac..02ea1bc 100644
--- a/drivers/gpu/drm/i915/intel_color.h
+++ b/drivers/gpu/drm/i915/intel_color.h
@@ -6,13 +6,20 @@
#ifndef __INTEL_COLOR_H__
#define __INTEL_COLOR_H__
+#include <linux/types.h>
+
struct intel_crtc_state;
struct intel_crtc;
+struct drm_property_blob;
void intel_color_init(struct intel_crtc *crtc);
int intel_color_check(struct intel_crtc_state *crtc_state);
void intel_color_commit(const struct intel_crtc_state *crtc_state);
void intel_color_load_luts(const struct intel_crtc_state *crtc_state);
void intel_color_get_config(struct intel_crtc_state *crtc_state);
+bool intel_color_lut_equal(struct drm_property_blob *blob1,
+ struct drm_property_blob *blob2,
+ u32 bit_precision);
+int intel_color_get_gamma_bit_precision(struct intel_crtc_state *crtc_state);
#endif /* __INTEL_COLOR_H__ */
diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index 3e01028..b8ff3f4 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -11570,6 +11570,15 @@ static void intel_dump_pipe_config(struct intel_crtc *crtc,
drm_rect_width(&state->base.dst),
drm_rect_height(&state->base.dst));
}
+
+ if (IS_CHERRYVIEW(dev_priv))
+ DRM_DEBUG_KMS("cgm_mode:%d gamma_mode:%d gamma_enable:%d csc_enable:%d\n",
+ pipe_config->cgm_mode, pipe_config->gamma_mode,
+ pipe_config->gamma_enable, pipe_config->csc_enable);
+ else
+ DRM_DEBUG_KMS("csc_mode:%d gamma_mode:%d gamma_enable:%d csc_enable:%d\n",
+ pipe_config->csc_mode, pipe_config->gamma_mode,
+ pipe_config->gamma_enable, pipe_config->csc_enable);
}
static bool check_digital_port_conflicts(struct drm_atomic_state *state)
@@ -11947,6 +11956,7 @@ static bool fastboot_enabled(struct drm_i915_private *dev_priv)
bool adjust)
{
bool ret = true;
+ u32 bp_gamma = 0;
bool fixup_inherited = adjust &&
(current_config->base.mode.private_flags & I915_MODE_FLAG_INHERITED) &&
!(pipe_config->base.mode.private_flags & I915_MODE_FLAG_INHERITED);
@@ -12098,6 +12108,15 @@ static bool fastboot_enabled(struct drm_i915_private *dev_priv)
} \
} while (0)
+#define PIPE_CONF_CHECK_COLOR_LUT(name, bit_precision) do { \
+ if (!intel_color_lut_equal(current_config->name, \
+ pipe_config->name, bit_precision)) { \
+ pipe_config_err(adjust, __stringify(name), \
+ "hw_state doesn't match sw_state\n"); \
+ ret = false; \
+ } \
+} while (0)
+
#define PIPE_CONF_QUIRK(quirk) \
((current_config->quirks | pipe_config->quirks) & (quirk))
@@ -12193,6 +12212,10 @@ static bool fastboot_enabled(struct drm_i915_private *dev_priv)
PIPE_CONF_CHECK_X(csc_mode);
PIPE_CONF_CHECK_BOOL(gamma_enable);
PIPE_CONF_CHECK_BOOL(csc_enable);
+
+ bp_gamma = intel_color_get_gamma_bit_precision(pipe_config);
+ if (bp_gamma)
+ PIPE_CONF_CHECK_COLOR_LUT(base.gamma_lut, bp_gamma);
}
PIPE_CONF_CHECK_BOOL(double_wide);
@@ -12255,6 +12278,7 @@ static bool fastboot_enabled(struct drm_i915_private *dev_priv)
#undef PIPE_CONF_CHECK_FLAGS
#undef PIPE_CONF_CHECK_CLOCK_FUZZY
#undef PIPE_CONF_QUIRK
+#undef PIPE_CONF_CHECK_COLOR_LUT
return ret;
}
--
1.9.1
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