Patch based on a previous series by Shashank Sharma.
v2: Update contributors
Signed-off-by: Shashank Sharma <shashank.sharma at intel.com>
Signed-off-by: Lionel Landwerlin <lionel.g.landwerlin at intel.com>
Signed-off-by: Kumar, Kiran S <kiran.s.kumar at intel.com>
Signed-off-by: Kausal Malladi <kausalmalladi at gmail.com>
---
drivers/gpu/drm/i915/i915_drv.c | 3 +
drivers/gpu/drm/i915/i915_reg.h | 40 +++++++++++
drivers/gpu/drm/i915/intel_color.c | 139 ++++++++++++++++++++++++++++++++++++-
3 files changed, 180 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/i915/i915_drv.c b/drivers/gpu/drm/i915/i915_drv.c
index b65aa20..eb69ff2 100644
--- a/drivers/gpu/drm/i915/i915_drv.c
+++ b/drivers/gpu/drm/i915/i915_drv.c
@@ -68,6 +68,8 @@ static struct drm_driver driver;
#define BDW_COLORS \
.color = { .degamma_lut_size = 512, .gamma_lut_size = 512 }
+#define CHV_COLORS \
+ .color = { .degamma_lut_size = 65, .gamma_lut_size = 257 }
static const struct intel_device_info intel_i830_info = {
.gen = 2, .is_mobile = 1, .cursor_needs_physical = 1, .num_pipes = 2,
@@ -325,6 +327,7 @@ static const struct intel_device_info intel_cherryview_info
= {
.display_mmio_offset = VLV_DISPLAY_BASE,
GEN_CHV_PIPEOFFSETS,
CURSOR_OFFSETS,
+ CHV_COLORS,
};
static const struct intel_device_info intel_skylake_info = {
diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
index 1dc5d3b..c1e5189 100644
--- a/drivers/gpu/drm/i915/i915_reg.h
+++ b/drivers/gpu/drm/i915/i915_reg.h
@@ -7685,6 +7685,46 @@ enum skl_disp_power_wells {
#define PREC_PAL_GC_MAX(pipe, i) _MMIO(_PIPE3(pipe, _PAL_PREC_GC_MAX_A,
_PAL_PREC_GC_MAX_B, _PAL_PREC_GC_MAX_C) + (i) * 4)
#define PREC_PAL_EXT_GC_MAX(pipe, i) _MMIO(_PIPE3(pipe,
_PAL_PREC_EXT_GC_MAX_A, _PAL_PREC_EXT_GC_MAX_B, _PAL_PREC_EXT_GC_MAX_C) + (i) *
4)
+/* pipe CSC & degamma/gamma LUTs on CHV */
+#define _CGM_PIPE_A_CSC_COEFF01 (VLV_DISPLAY_BASE + 0x67900)
+#define _CGM_PIPE_A_CSC_COEFF23 (VLV_DISPLAY_BASE + 0x67904)
+#define _CGM_PIPE_A_CSC_COEFF45 (VLV_DISPLAY_BASE + 0x67908)
+#define _CGM_PIPE_A_CSC_COEFF67 (VLV_DISPLAY_BASE + 0x6790C)
+#define _CGM_PIPE_A_CSC_COEFF8 (VLV_DISPLAY_BASE + 0x67910)
+#define _CGM_PIPE_A_DEGAMMA (VLV_DISPLAY_BASE + 0x66000)
+#define _CGM_PIPE_A_GAMMA (VLV_DISPLAY_BASE + 0x67000)
+#define _CGM_PIPE_A_MODE (VLV_DISPLAY_BASE + 0x67A00)
+#define CGM_PIPE_MODE_GAMMA (1 << 2)
+#define CGM_PIPE_MODE_CSC (1 << 1)
+#define CGM_PIPE_MODE_DEGAMMA (1 << 0)
+
+#define _CGM_PIPE_B_CSC_COEFF01 (VLV_DISPLAY_BASE + 0x69900)
+#define _CGM_PIPE_B_CSC_COEFF23 (VLV_DISPLAY_BASE + 0x69904)
+#define _CGM_PIPE_B_CSC_COEFF45 (VLV_DISPLAY_BASE + 0x69908)
+#define _CGM_PIPE_B_CSC_COEFF67 (VLV_DISPLAY_BASE + 0x6990C)
+#define _CGM_PIPE_B_CSC_COEFF8 (VLV_DISPLAY_BASE + 0x69910)
+#define _CGM_PIPE_B_DEGAMMA (VLV_DISPLAY_BASE + 0x68000)
+#define _CGM_PIPE_B_GAMMA (VLV_DISPLAY_BASE + 0x69000)
+#define _CGM_PIPE_B_MODE (VLV_DISPLAY_BASE + 0x69A00)
+
+#define _CGM_PIPE_C_CSC_COEFF01 (VLV_DISPLAY_BASE + 0x6B900)
+#define _CGM_PIPE_C_CSC_COEFF23 (VLV_DISPLAY_BASE + 0x6B904)
+#define _CGM_PIPE_C_CSC_COEFF45 (VLV_DISPLAY_BASE + 0x6B908)
+#define _CGM_PIPE_C_CSC_COEFF67 (VLV_DISPLAY_BASE + 0x6B90C)
+#define _CGM_PIPE_C_CSC_COEFF8 (VLV_DISPLAY_BASE + 0x6B910)
+#define _CGM_PIPE_C_DEGAMMA (VLV_DISPLAY_BASE + 0x6A000)
+#define _CGM_PIPE_C_GAMMA (VLV_DISPLAY_BASE + 0x6B000)
+#define _CGM_PIPE_C_MODE (VLV_DISPLAY_BASE + 0x6BA00)
+
+#define CGM_PIPE_CSC_COEFF01(pipe) _MMIO_PIPE3(pipe,
_CGM_PIPE_A_CSC_COEFF01, _CGM_PIPE_B_CSC_COEFF01, _CGM_PIPE_C_CSC_COEFF01)
+#define CGM_PIPE_CSC_COEFF23(pipe) _MMIO_PIPE3(pipe,
_CGM_PIPE_A_CSC_COEFF23, _CGM_PIPE_B_CSC_COEFF23, _CGM_PIPE_C_CSC_COEFF23)
+#define CGM_PIPE_CSC_COEFF45(pipe) _MMIO_PIPE3(pipe,
_CGM_PIPE_A_CSC_COEFF45, _CGM_PIPE_B_CSC_COEFF45, _CGM_PIPE_C_CSC_COEFF45)
+#define CGM_PIPE_CSC_COEFF67(pipe) _MMIO_PIPE3(pipe,
_CGM_PIPE_A_CSC_COEFF67, _CGM_PIPE_B_CSC_COEFF67, _CGM_PIPE_C_CSC_COEFF67)
+#define CGM_PIPE_CSC_COEFF8(pipe) _MMIO_PIPE3(pipe,
_CGM_PIPE_A_CSC_COEFF8, _CGM_PIPE_B_CSC_COEFF8, _CGM_PIPE_C_CSC_COEFF8)
+#define CGM_PIPE_DEGAMMA(pipe, i, w) _MMIO(_PIPE3(pipe, _CGM_PIPE_A_DEGAMMA,
_CGM_PIPE_B_DEGAMMA, _CGM_PIPE_C_DEGAMMA) + (i) * 4 + (w) * 4)
+#define CGM_PIPE_GAMMA(pipe, i, w) _MMIO(_PIPE3(pipe, _CGM_PIPE_A_GAMMA,
_CGM_PIPE_B_GAMMA, _CGM_PIPE_C_GAMMA) + (i) * 4 + (w) * 4)
+#define CGM_PIPE_MODE(pipe) _MMIO_PIPE3(pipe, _CGM_PIPE_A_MODE,
_CGM_PIPE_B_MODE, _CGM_PIPE_C_MODE)
+
/* MIPI DSI registers */
#define _MIPI_PORT(port, a, c) _PORT3(port, a, 0, c) /* ports A and C only */
diff --git a/drivers/gpu/drm/i915/intel_color.c
b/drivers/gpu/drm/i915/intel_color.c
index 782b9d8..da6ff09 100644
--- a/drivers/gpu/drm/i915/intel_color.c
+++ b/drivers/gpu/drm/i915/intel_color.c
@@ -213,6 +213,54 @@ static void i9xx_load_csc_matrix(struct drm_crtc *crtc)
}
}
+/*
+ * Set up the pipe CSC unit on CherryView.
+ */
+static void cherryview_load_csc_matrix(struct drm_crtc *crtc)
+{
+ struct drm_device *dev = crtc->dev;
+ struct drm_crtc_state *crtc_state = crtc->state;
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
+ int pipe = intel_crtc->pipe;
+
+
+ if (crtc_state->ctm_matrix) {
+ struct drm_color_ctm *ctm =
+ (struct drm_color_ctm *)crtc_state->ctm_matrix->data;
+ uint16_t coeffs[9] = { 0, };
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(coeffs); i++) {
+ uint64_t abs_coeff =
+ ((1ULL << 63) - 1) & ctm->matrix[i];
+
+ abs_coeff = clamp_val(abs_coeff, 0, (1 << 15) - 1);
+
+ /* Write coefficients in S3.12 format. */
+ if (ctm->matrix[i] & (1ULL << 63))
+ coeffs[i] = 1 << 15;
+ coeffs[i] |= ((abs_coeff >> 32) & 7) << 12;
+ coeffs[i] |= (((abs_coeff >> 19) + 1) >> 1) & 0xfff;
+ }
+
+ I915_WRITE(CGM_PIPE_CSC_COEFF01(pipe),
+ coeffs[1] << 16 | coeffs[0]);
+ I915_WRITE(CGM_PIPE_CSC_COEFF23(pipe),
+ coeffs[3] << 16 | coeffs[2]);
+ I915_WRITE(CGM_PIPE_CSC_COEFF45(pipe),
+ coeffs[5] << 16 | coeffs[4]);
+ I915_WRITE(CGM_PIPE_CSC_COEFF67(pipe),
+ coeffs[7] << 16 | coeffs[6]);
+ I915_WRITE(CGM_PIPE_CSC_COEFF8(pipe), coeffs[8]);
+ }
+
+ I915_WRITE(CGM_PIPE_MODE(pipe),
+ (crtc_state->ctm_matrix ? CGM_PIPE_MODE_CSC : 0) |
+ (crtc_state->degamma_lut ? CGM_PIPE_MODE_DEGAMMA : 0) |
+ (crtc_state->gamma_lut ? CGM_PIPE_MODE_GAMMA : 0));
+}
+
/** Loads the legacy palette/gamma unit for the CRTC with the prepared
* values.
*/
@@ -282,6 +330,47 @@ static void broadwell_load_degamma_lut(struct drm_crtc
*crtc)
I915_WRITE(PREC_PAL_INDEX(pipe), 0);
}
+static void cherryview_load_degamma_lut(struct drm_crtc *crtc)
+{
+ struct drm_device *dev = crtc->dev;
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ struct drm_crtc_state *state = crtc->state;
+ enum pipe pipe = to_intel_crtc(crtc)->pipe;
+
+ if (state->degamma_lut) {
+ struct drm_color_lut *lut =
+ (struct drm_color_lut *) state->degamma_lut->data;
+ uint32_t i, lut_size = INTEL_INFO(dev)->color.degamma_lut_size;
+ uint32_t word0, word1;
+
+ for (i = 0; i < lut_size; i++) {
+ /* Write LUT in U0.14 format. */
+ word0 =
+ (drm_color_lut_extract(lut[i].green, 14) << 16) |
+ drm_color_lut_extract(lut[i].blue, 14);
+ word1 = drm_color_lut_extract(lut[i].red, 14);
+
+ I915_WRITE(CGM_PIPE_DEGAMMA(pipe, i, 0), word0);
+ I915_WRITE(CGM_PIPE_DEGAMMA(pipe, i, 1), word1);
+ }
+ /* Write the 65's entry of the LUT with the last entry given
+ * by user space to clamp values > 1.0.
+ */
+ word0 =
+ (drm_color_lut_extract(lut[lut_size - 1].green, 14) << 16) |
+ drm_color_lut_extract(lut[lut_size - 1].blue, 14);
+ word1 = drm_color_lut_extract(lut[lut_size - 1].red, 14);
+
+ I915_WRITE(CGM_PIPE_DEGAMMA(pipe, lut_size, 0), word0);
+ I915_WRITE(CGM_PIPE_DEGAMMA(pipe, lut_size, 1), word1);
+ }
+
+ I915_WRITE(CGM_PIPE_MODE(pipe),
+ (state->ctm_matrix ? CGM_PIPE_MODE_CSC : 0) |
+ (state->degamma_lut ? CGM_PIPE_MODE_DEGAMMA : 0) |
+ (state->gamma_lut ? CGM_PIPE_MODE_GAMMA : 0));
+}
+
static void broadwell_load_gamma_lut(struct drm_crtc *crtc)
{
struct drm_device *dev = crtc->dev;
@@ -339,6 +428,47 @@ static void broadwell_load_gamma_lut(struct drm_crtc *crtc)
I915_WRITE(PREC_PAL_INDEX(pipe), 0);
}
+static void cherryview_load_gamma_lut(struct drm_crtc *crtc)
+{
+ struct drm_device *dev = crtc->dev;
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ struct drm_crtc_state *state = crtc->state;
+ enum pipe pipe = to_intel_crtc(crtc)->pipe;
+
+ if (state->gamma_lut) {
+ struct drm_color_lut *lut =
+ (struct drm_color_lut *) state->gamma_lut->data;
+ uint32_t i, lut_size = INTEL_INFO(dev)->color.gamma_lut_size;
+ uint32_t word0, word1;
+
+ for (i = 0; i < lut_size; i++) {
+ /* Write LUT in U0.10 format. */
+ word0 =
+ (drm_color_lut_extract(lut[i].green, 10) << 16) |
+ drm_color_lut_extract(lut[i].blue, 10);
+ word1 = drm_color_lut_extract(lut[i].red, 10);
+
+ I915_WRITE(CGM_PIPE_GAMMA(pipe, i, 0), word0);
+ I915_WRITE(CGM_PIPE_GAMMA(pipe, i, 1), word1);
+ }
+ /* Write the 257's entry of the LUT with the last entry given
+ * by user space to clamp values > 1.0.
+ */
+ word0 =
+ (drm_color_lut_extract(lut[lut_size - 1].green, 10) << 16) |
+ drm_color_lut_extract(lut[lut_size - 1].blue, 10);
+ word1 = drm_color_lut_extract(lut[lut_size - 1].red, 10);
+
+ I915_WRITE(CGM_PIPE_GAMMA(pipe, lut_size, 0), word0);
+ I915_WRITE(CGM_PIPE_GAMMA(pipe, lut_size, 1), word1);
+ }
+
+ I915_WRITE(CGM_PIPE_MODE(pipe),
+ (state->ctm_matrix ? CGM_PIPE_MODE_CSC : 0) |
+ (state->degamma_lut ? CGM_PIPE_MODE_DEGAMMA : 0) |
+ (state->gamma_lut ? CGM_PIPE_MODE_GAMMA : 0));
+}
+
static void intel_color_load_luts_internal(struct drm_crtc *crtc,
bool legacy)
{
@@ -430,8 +560,13 @@ void intel_color_init(struct drm_crtc *crtc)
intel_crtc->lut_b[i] = i;
}
- if (IS_BROADWELL(dev) || IS_SKYLAKE(dev) ||
- IS_BROXTON(dev) || IS_KABYLAKE(dev)) {
+ if (IS_CHERRYVIEW(dev)) {
+ dev_priv->display.load_degamma_lut =
+ cherryview_load_degamma_lut;
+ dev_priv->display.load_gamma_lut = cherryview_load_gamma_lut;
+ dev_priv->display.load_csc_matrix = cherryview_load_csc_matrix;
+ } else if (IS_BROADWELL(dev) || IS_SKYLAKE(dev) ||
+ IS_BROXTON(dev) || IS_KABYLAKE(dev)) {
dev_priv->display.load_degamma_lut = broadwell_load_degamma_lut;
dev_priv->display.load_gamma_lut = broadwell_load_gamma_lut;
dev_priv->display.load_csc_matrix = i9xx_load_csc_matrix;
--
2.7.0
