On Thu, Feb 25, 2016 at 03:33:43PM +0000, Lionel Landwerlin wrote:
> Patch based on a previous series by Shashank Sharma.
>
> v2: Update contributors
>
> v3: Refactor degamma/gamma LUTs load into a single function
>
> v4: Remove unused variable
>
> Signed-off-by: Shashank Sharma <shashank.sharma@xxxxxxxxx>
> Signed-off-by: Lionel Landwerlin <lionel.g.landwerlin@xxxxxxxxx>
> Signed-off-by: Kumar, Kiran S <kiran.s.kumar@xxxxxxxxx>
> Signed-off-by: Kausal Malladi <kausalmalladi@xxxxxxxxx>
Reviewed-by: Matt Roper <matthew.d.roper@xxxxxxxxx>
> ---
> drivers/gpu/drm/i915/i915_drv.c | 3 +
> drivers/gpu/drm/i915/i915_reg.h | 31 +++++++++
> drivers/gpu/drm/i915/intel_color.c | 133 +++++++++++++++++++++++++++++++++++--
> 3 files changed, 161 insertions(+), 6 deletions(-)
>
> diff --git a/drivers/gpu/drm/i915/i915_drv.c b/drivers/gpu/drm/i915/i915_drv.c
> index 3807b73..8a2aaa7 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 76a9e49..ea599a9 100644
> --- a/drivers/gpu/drm/i915/i915_reg.h
> +++ b/drivers/gpu/drm/i915/i915_reg.h
> @@ -7673,6 +7673,37 @@ enum skl_disp_power_wells {
> #define PREC_PAL_GC_MAX(pipe, i) _MMIO(_PIPE(pipe, _PAL_PREC_GC_MAX_A, _PAL_PREC_GC_MAX_B) + (i) * 4)
> #define PREC_PAL_EXT_GC_MAX(pipe, i) _MMIO(_PIPE(pipe, _PAL_PREC_EXT_GC_MAX_A, _PAL_PREC_EXT_GC_MAX_B) + (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_CSC_COEFF01(pipe) _MMIO_PIPE(pipe, _CGM_PIPE_A_CSC_COEFF01, _CGM_PIPE_B_CSC_COEFF01)
> +#define CGM_PIPE_CSC_COEFF23(pipe) _MMIO_PIPE(pipe, _CGM_PIPE_A_CSC_COEFF23, _CGM_PIPE_B_CSC_COEFF23)
> +#define CGM_PIPE_CSC_COEFF45(pipe) _MMIO_PIPE(pipe, _CGM_PIPE_A_CSC_COEFF45, _CGM_PIPE_B_CSC_COEFF45)
> +#define CGM_PIPE_CSC_COEFF67(pipe) _MMIO_PIPE(pipe, _CGM_PIPE_A_CSC_COEFF67, _CGM_PIPE_B_CSC_COEFF67)
> +#define CGM_PIPE_CSC_COEFF8(pipe) _MMIO_PIPE(pipe, _CGM_PIPE_A_CSC_COEFF8, _CGM_PIPE_B_CSC_COEFF8)
> +#define CGM_PIPE_DEGAMMA(pipe, i, w) _MMIO(_PIPE(pipe, _CGM_PIPE_A_DEGAMMA, _CGM_PIPE_B_DEGAMMA) + (i) * 8 + (w) * 4)
> +#define CGM_PIPE_GAMMA(pipe, i, w) _MMIO(_PIPE(pipe, _CGM_PIPE_A_GAMMA, _CGM_PIPE_B_GAMMA) + (i) * 8 + (w) * 4)
> +#define CGM_PIPE_MODE(pipe) _MMIO_PIPE(pipe, _CGM_PIPE_A_MODE, _CGM_PIPE_B_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 a6dc2af..9ad37e5 100644
> --- a/drivers/gpu/drm/i915/intel_color.c
> +++ b/drivers/gpu/drm/i915/intel_color.c
> @@ -29,6 +29,7 @@
> #define CTM_COEFF_1_0 (1ULL << 32)
> #define CTM_COEFF_2_0 (CTM_COEFF_1_0 << 1)
> #define CTM_COEFF_4_0 (CTM_COEFF_2_0 << 1)
> +#define CTM_COEFF_8_0 (CTM_COEFF_4_0 << 1)
> #define CTM_COEFF_0_5 (CTM_COEFF_1_0 >> 1)
> #define CTM_COEFF_0_25 (CTM_COEFF_0_5 >> 1)
> #define CTM_COEFF_0_125 (CTM_COEFF_0_25 >> 1)
> @@ -199,6 +200,58 @@ 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 *state = crtc->state;
> + struct drm_i915_private *dev_priv = dev->dev_private;
> + int pipe = to_intel_crtc(crtc)->pipe;
> + uint32_t mode;
> +
> + if (state->ctm) {
> + struct drm_color_ctm *ctm =
> + (struct drm_color_ctm *) state->ctm->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];
> +
> + /* Round coefficient. */
> + abs_coeff += 1 << (32 - 13);
> + /* Clamp to hardware limits. */
> + abs_coeff = clamp_val(abs_coeff, 0, CTM_COEFF_8_0 - 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 >> 20) & 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]);
> + }
> +
> + mode = (state->ctm ? CGM_PIPE_MODE_CSC : 0);
> + if (!crtc_state_is_legacy(state)) {
> + mode |= (state->degamma_lut ? CGM_PIPE_MODE_DEGAMMA : 0) |
> + (state->gamma_lut ? CGM_PIPE_MODE_GAMMA : 0);
> + }
> + I915_WRITE(CGM_PIPE_MODE(pipe), mode);
> +}
> +
> void intel_color_set_csc(struct drm_crtc *crtc)
> {
> struct drm_device *dev = crtc->dev;
> @@ -209,10 +262,10 @@ void intel_color_set_csc(struct drm_crtc *crtc)
> }
>
> /* Loads the legacy palette/gamma unit for the CRTC. */
> -static void i9xx_load_luts(struct drm_crtc *crtc)
> +static void i9xx_load_luts_internal(struct drm_crtc *crtc,
> + struct drm_property_blob *blob)
> {
> struct drm_device *dev = crtc->dev;
> - struct drm_crtc_state *state = crtc->state;
> struct drm_i915_private *dev_priv = dev->dev_private;
> struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
> enum pipe pipe = intel_crtc->pipe;
> @@ -225,9 +278,8 @@ static void i9xx_load_luts(struct drm_crtc *crtc)
> assert_pll_enabled(dev_priv, pipe);
> }
>
> - if (state->gamma_lut) {
> - struct drm_color_lut *lut =
> - (struct drm_color_lut *) state->gamma_lut->data;
> + if (blob) {
> + struct drm_color_lut *lut = (struct drm_color_lut *) blob->data;
> for (i = 0; i < 256; i++) {
> uint32_t word =
> (drm_color_lut_extract(lut[i].red, 8) << 16) |
> @@ -251,6 +303,11 @@ static void i9xx_load_luts(struct drm_crtc *crtc)
> }
> }
>
> +static void i9xx_load_luts(struct drm_crtc *crtc)
> +{
> + i9xx_load_luts_internal(crtc, crtc->state->gamma_lut);
> +}
> +
> /* Loads the legacy palette/gamma unit for the CRTC on Haswell. */
> static void haswell_load_luts(struct drm_crtc *crtc)
> {
> @@ -363,6 +420,67 @@ static void broadwell_load_luts(struct drm_crtc *crtc)
> I915_WRITE(PREC_PAL_INDEX(pipe), 0);
> }
>
> +/* Loads the palette/gamma unit for the CRTC on CherryView. */
> +static void cherryview_load_luts(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;
> + struct drm_color_lut *lut;
> + uint32_t i, lut_size;
> + uint32_t word0, word1;
> +
> + if (crtc_state_is_legacy(state)) {
> + /* Turn off degamma/gamma on CGM block. */
> + I915_WRITE(CGM_PIPE_MODE(pipe),
> + (state->ctm ? CGM_PIPE_MODE_CSC : 0));
> + i9xx_load_luts_internal(crtc, state->gamma_lut);
> + return;
> + }
> +
> + if (state->degamma_lut) {
> + lut = (struct drm_color_lut *) state->degamma_lut->data;
> + lut_size = INTEL_INFO(dev)->color.degamma_lut_size;
> + 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);
> + }
> + }
> +
> + if (state->gamma_lut) {
> + lut = (struct drm_color_lut *) state->gamma_lut->data;
> + lut_size = INTEL_INFO(dev)->color.gamma_lut_size;
> + 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);
> + }
> + }
> +
> + I915_WRITE(CGM_PIPE_MODE(pipe),
> + (state->ctm ? CGM_PIPE_MODE_CSC : 0) |
> + (state->degamma_lut ? CGM_PIPE_MODE_DEGAMMA : 0) |
> + (state->gamma_lut ? CGM_PIPE_MODE_GAMMA : 0));
> +
> + /*
> + * Also program a linear LUT in the legacy block (behind the
> + * CGM block).
> + */
> + i9xx_load_luts_internal(crtc, NULL);
> +}
> +
> void intel_color_load_luts(struct drm_crtc *crtc)
> {
> struct drm_device *dev = crtc->dev;
> @@ -415,7 +533,10 @@ void intel_color_init(struct drm_crtc *crtc)
>
> drm_mode_crtc_set_gamma_size(crtc, 256);
>
> - if (IS_HASWELL(dev)) {
> + if (IS_CHERRYVIEW(dev)) {
> + dev_priv->display.load_csc_matrix = cherryview_load_csc_matrix;
> + dev_priv->display.load_luts = cherryview_load_luts;
> + } else if (IS_HASWELL(dev)) {
> dev_priv->display.load_csc_matrix = i9xx_load_csc_matrix;
> dev_priv->display.load_luts = haswell_load_luts;
> } else if (IS_BROADWELL(dev) || IS_SKYLAKE(dev) ||
> --
> 2.7.0
>
> _______________________________________________
> dri-devel mailing list
> dri-devel@xxxxxxxxxxxxxxxxxxxxx
> https://lists.freedesktop.org/mailman/listinfo/dri-devel
--
Matt Roper
Graphics Software Engineer
IoTG Platform Enabling & Development
Intel Corporation
(916) 356-2795
_______________________________________________
Intel-gfx mailing list
Intel-gfx@xxxxxxxxxxxxxxxxxxxxx
https://lists.freedesktop.org/mailman/listinfo/intel-gfx
