Adds gamma and color-transform support for DOU-IPS.
Adds two caps members fgamma_coeffs and ctm_coeffs to komeda_improc_state.
If color management changed, set gamma and color-transform accordingly.

This patch series depends on:
- https://patchwork.freedesktop.org/series/58710/
- https://patchwork.freedesktop.org/series/59000/
- https://patchwork.freedesktop.org/series/59002/
- https://patchwork.freedesktop.org/series/59747/
- https://patchwork.freedesktop.org/series/59915/
- https://patchwork.freedesktop.org/series/60083/
- https://patchwork.freedesktop.org/series/60698/
- https://patchwork.freedesktop.org/series/60856/
- https://patchwork.freedesktop.org/series/60893/

Signed-off-by: Lowry Li (Arm Technology China) <[email protected]>
---
 .../gpu/drm/arm/display/komeda/d71/d71_component.c | 24 ++++++++++++++++++++++
 drivers/gpu/drm/arm/display/komeda/komeda_crtc.c   |  2 ++
 .../gpu/drm/arm/display/komeda/komeda_pipeline.h   |  3 +++
 .../drm/arm/display/komeda/komeda_pipeline_state.c |  6 ++++++
 4 files changed, 35 insertions(+)

diff --git a/drivers/gpu/drm/arm/display/komeda/d71/d71_component.c 
b/drivers/gpu/drm/arm/display/komeda/d71/d71_component.c
index 9668063..240f82c 100644
--- a/drivers/gpu/drm/arm/display/komeda/d71/d71_component.c
+++ b/drivers/gpu/drm/arm/display/komeda/d71/d71_component.c
@@ -882,15 +882,39 @@ static int d71_downscaling_clk_check(struct 
komeda_pipeline *pipe,
 static void d71_improc_update(struct komeda_component *c,
                              struct komeda_component_state *state)
 {
+       struct drm_crtc_state *crtc_st = state->crtc->state;
        struct komeda_improc_state *st = to_improc_st(state);
+       struct d71_pipeline *pipe = to_d71_pipeline(c->pipeline);
        u32 __iomem *reg = c->reg;
        u32 index;
+       u32 mask = 0, ctrl = 0;
 
        for_each_changed_input(state, index)
                malidp_write32(reg, BLK_INPUT_ID0 + index * 4,
                               to_d71_input_id(state, index));
 
        malidp_write32(reg, BLK_SIZE, HV_SIZE(st->hsize, st->vsize));
+
+       if (crtc_st->color_mgmt_changed) {
+               mask |= IPS_CTRL_FT | IPS_CTRL_RGB;
+
+               if (crtc_st->gamma_lut) {
+                       malidp_write_group(pipe->dou_ft_coeff_addr, FT_COEFF0,
+                                          KOMEDA_N_GAMMA_COEFFS,
+                                          st->fgamma_coeffs);
+                       ctrl |= IPS_CTRL_FT; /* enable gamma */
+               }
+
+               if (crtc_st->ctm) {
+                       malidp_write_group(reg, IPS_RGB_RGB_COEFF0,
+                                          KOMEDA_N_CTM_COEFFS,
+                                          st->ctm_coeffs);
+                       ctrl |= IPS_CTRL_RGB; /* enable gamut */
+               }
+       }
+
+       if (mask)
+               malidp_write32_mask(reg, BLK_CONTROL, mask, ctrl);
 }
 
 static void d71_improc_dump(struct komeda_component *c, struct seq_file *sf)
diff --git a/drivers/gpu/drm/arm/display/komeda/komeda_crtc.c 
b/drivers/gpu/drm/arm/display/komeda/komeda_crtc.c
index 24a9613..18c23f8 100644
--- a/drivers/gpu/drm/arm/display/komeda/komeda_crtc.c
+++ b/drivers/gpu/drm/arm/display/komeda/komeda_crtc.c
@@ -573,6 +573,8 @@ static int komeda_crtc_add(struct komeda_kms_dev *kms,
        if (err)
                return err;
 
+       drm_crtc_enable_color_mgmt(crtc, 0, true, KOMEDA_COLOR_LUT_SIZE);
+
        return 0;
 }
 
diff --git a/drivers/gpu/drm/arm/display/komeda/komeda_pipeline.h 
b/drivers/gpu/drm/arm/display/komeda/komeda_pipeline.h
index 49bb058..989408b 100644
--- a/drivers/gpu/drm/arm/display/komeda/komeda_pipeline.h
+++ b/drivers/gpu/drm/arm/display/komeda/komeda_pipeline.h
@@ -11,6 +11,7 @@
 #include <drm/drm_atomic.h>
 #include <drm/drm_atomic_helper.h>
 #include "malidp_utils.h"
+#include "komeda_color_mgmt.h"
 
 #define KOMEDA_MAX_PIPELINES           2
 #define KOMEDA_PIPELINE_MAX_LAYERS     4
@@ -313,6 +314,8 @@ struct komeda_improc {
 struct komeda_improc_state {
        struct komeda_component_state base;
        u16 hsize, vsize;
+       u32 fgamma_coeffs[KOMEDA_N_GAMMA_COEFFS];
+       u32 ctm_coeffs[KOMEDA_N_CTM_COEFFS];
 };
 
 /* display timing controller */
diff --git a/drivers/gpu/drm/arm/display/komeda/komeda_pipeline_state.c 
b/drivers/gpu/drm/arm/display/komeda/komeda_pipeline_state.c
index afb2301..82ea6cf 100644
--- a/drivers/gpu/drm/arm/display/komeda/komeda_pipeline_state.c
+++ b/drivers/gpu/drm/arm/display/komeda/komeda_pipeline_state.c
@@ -700,6 +700,12 @@ void pipeline_composition_size(struct komeda_crtc_state 
*kcrtc_st,
        st->hsize = dflow->in_w;
        st->vsize = dflow->in_h;
 
+       if (kcrtc_st->base.color_mgmt_changed) {
+               drm_lut_to_fgamma_coeffs(kcrtc_st->base.gamma_lut,
+                                        st->fgamma_coeffs);
+               drm_ctm_to_coeffs(kcrtc_st->base.ctm, st->ctm_coeffs);
+       }
+
        komeda_component_add_input(&st->base, &dflow->input, 0);
        komeda_component_set_output(&dflow->input, &improc->base, 0);
 
-- 
1.9.1

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