Fixed few formatting issues in multi-segmented load_lut().
v3: -style nitting [Jani]
-balanced parentheses moved from patch 2 to 1 [Jani]
-subject prefix change [Jani]
-added commit message [Jani]
v4: -rearranged INDEX register write in ilk_read_luts()
Signed-off-by: Swati Sharma <swati2.sharma@xxxxxxxxx>
---
drivers/gpu/drm/i915/display/intel_color.c | 40 ++++++++++++++----------------
1 file changed, 19 insertions(+), 21 deletions(-)
diff --git a/drivers/gpu/drm/i915/display/intel_color.c b/drivers/gpu/drm/i915/display/intel_color.c
index 318308d..f774938 100644
--- a/drivers/gpu/drm/i915/display/intel_color.c
+++ b/drivers/gpu/drm/i915/display/intel_color.c
@@ -807,11 +807,11 @@ static u32 ilk_lut_12p4_ldw(const struct drm_color_lut *color)
u32 i;
/*
- * Every entry in the multi-segment LUT is corresponding to a superfine
- * segment step which is 1/(8 * 128 * 256).
+ * Program Super Fine segment (let's call it seg1)...
*
- * Superfine segment has 9 entries, corresponding to values
- * 0, 1/(8 * 128 * 256), 2/(8 * 128 * 256) .... 8/(8 * 128 * 256).
+ * Super Fine segment's step is 1/(8 * 128 * 256) and it has
+ * 9 entries, corresponding to values 0, 1/(8 * 128 * 256),
+ * 2/(8 * 128 * 256) ... 8/(8 * 128 * 256).
*/
I915_WRITE(PREC_PAL_MULTI_SEG_INDEX(pipe), PAL_PREC_AUTO_INCREMENT);
@@ -837,17 +837,17 @@ static u32 ilk_lut_12p4_ldw(const struct drm_color_lut *color)
u32 i;
/*
- *
* Program Fine segment (let's call it seg2)...
*
- * Fine segment's step is 1/(128 * 256) ie 1/(128 * 256), 2/(128*256)
- * ... 256/(128*256). So in order to program fine segment of LUT we
- * need to pick every 8'th entry in LUT, and program 256 indexes.
+ * Fine segment's step is 1/(128 * 256) i.e. 1/(128 * 256), 2/(128 * 256)
+ * ... 256/(128 * 256). So in order to program fine segment of LUT we
+ * need to pick every 8th entry in the LUT, and program 256 indexes.
*
* PAL_PREC_INDEX[0] and PAL_PREC_INDEX[1] map to seg2[1],
- * with seg2[0] being unused by the hardware.
+ * seg2[0] being unused by the hardware.
*/
I915_WRITE(PREC_PAL_INDEX(pipe), PAL_PREC_AUTO_INCREMENT);
+
for (i = 1; i < 257; i++) {
entry = &lut[i * 8];
I915_WRITE(PREC_PAL_DATA(pipe), ilk_lut_12p4_ldw(entry));
@@ -857,8 +857,8 @@ static u32 ilk_lut_12p4_ldw(const struct drm_color_lut *color)
/*
* Program Coarse segment (let's call it seg3)...
*
- * Coarse segment's starts from index 0 and it's step is 1/256 ie 0,
- * 1/256, 2/256 ...256/256. As per the description of each entry in LUT
+ * Coarse segment starts from index 0 and it's step is 1/256 ie 0,
+ * 1/256, 2/256 ... 256/256. As per the description of each entry in LUT
* above, we need to pick every (8 * 128)th entry in LUT, and
* program 256 of those.
*
@@ -890,12 +890,10 @@ static void icl_load_luts(const struct intel_crtc_state *crtc_state)
case GAMMA_MODE_MODE_8BIT:
i9xx_load_luts(crtc_state);
break;
-
case GAMMA_MODE_MODE_12BIT_MULTI_SEGMENTED:
icl_program_gamma_superfine_segment(crtc_state);
icl_program_gamma_multi_segment(crtc_state);
break;
-
default:
bdw_load_lut_10(crtc, gamma_lut, PAL_PREC_INDEX_VALUE(0));
ivb_load_lut_ext_max(crtc);
@@ -1712,9 +1710,6 @@ static void ilk_read_luts(struct intel_crtc_state *crtc_state)
struct drm_color_lut *blob_data;
u32 i, val;
- I915_WRITE(PREC_PAL_INDEX(pipe), prec_index |
- PAL_PREC_AUTO_INCREMENT);
-
blob = drm_property_create_blob(&dev_priv->drm,
sizeof(struct drm_color_lut) * hw_lut_size,
NULL);
@@ -1723,6 +1718,9 @@ static void ilk_read_luts(struct intel_crtc_state *crtc_state)
blob_data = blob->data;
+ I915_WRITE(PREC_PAL_INDEX(pipe), prec_index |
+ PAL_PREC_AUTO_INCREMENT);
+
for (i = 0; i < hw_lut_size; i++) {
val = I915_READ(PREC_PAL_DATA(pipe));
@@ -1788,16 +1786,16 @@ void intel_color_init(struct intel_crtc *crtc)
else
dev_priv->display.color_commit = ilk_color_commit;
- if (INTEL_GEN(dev_priv) >= 11)
+ if (INTEL_GEN(dev_priv) >= 11) {
dev_priv->display.load_luts = icl_load_luts;
- else if (IS_CANNONLAKE(dev_priv) || IS_GEMINILAKE(dev_priv)) {
+ } else if (IS_CANNONLAKE(dev_priv) || IS_GEMINILAKE(dev_priv)) {
dev_priv->display.load_luts = glk_load_luts;
dev_priv->display.read_luts = glk_read_luts;
- } else if (INTEL_GEN(dev_priv) >= 8)
+ } else if (INTEL_GEN(dev_priv) >= 8) {
dev_priv->display.load_luts = bdw_load_luts;
- else if (INTEL_GEN(dev_priv) >= 7)
+ } else if (INTEL_GEN(dev_priv) >= 7) {
dev_priv->display.load_luts = ivb_load_luts;
- else {
+ } else {
dev_priv->display.load_luts = ilk_load_luts;
dev_priv->display.read_luts = ilk_read_luts;
}
--
1.9.1
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