Re: [PATCH v1 2/2] drm/komeda: Enable color-encoding (YUV format) support
From: james qian wang (Arm Technology China)
Date: Mon May 20 2019 - 01:53:19 EST
On Thu, May 16, 2019 at 02:13:13PM +0800, Lowry Li (Arm Technology China) wrote:
> Adds color-encoding properties if layer can support YUV format.
> Updates HW YUV-RGB matrix state according to the color-encoding
> properties.
>
> Signed-off-by: Lowry Li (Arm Technology China) <lowry.li@xxxxxxx>
> ---
> drivers/gpu/drm/arm/display/komeda/Makefile | 1 +
> .../gpu/drm/arm/display/komeda/d71/d71_component.c | 6 ++
> .../gpu/drm/arm/display/komeda/komeda_color_mgmt.c | 67 ++++++++++++++++++++++
> .../gpu/drm/arm/display/komeda/komeda_color_mgmt.h | 17 ++++++
> drivers/gpu/drm/arm/display/komeda/komeda_plane.c | 13 +++++
> 5 files changed, 104 insertions(+)
> create mode 100644 drivers/gpu/drm/arm/display/komeda/komeda_color_mgmt.c
> create mode 100644 drivers/gpu/drm/arm/display/komeda/komeda_color_mgmt.h
>
> diff --git a/drivers/gpu/drm/arm/display/komeda/Makefile b/drivers/gpu/drm/arm/display/komeda/Makefile
> index d7e29fc..73b8e8b 100644
> --- a/drivers/gpu/drm/arm/display/komeda/Makefile
> +++ b/drivers/gpu/drm/arm/display/komeda/Makefile
> @@ -8,6 +8,7 @@ komeda-y := \
> komeda_drv.o \
> komeda_dev.o \
> komeda_format_caps.o \
> + komeda_color_mgmt.o \
> komeda_pipeline.o \
> komeda_pipeline_state.o \
> komeda_framebuffer.o \
> 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 dfc70f5..b85514b 100644
> --- a/drivers/gpu/drm/arm/display/komeda/d71/d71_component.c
> +++ b/drivers/gpu/drm/arm/display/komeda/d71/d71_component.c
> @@ -10,6 +10,7 @@
> #include "komeda_kms.h"
> #include "malidp_io.h"
> #include "komeda_framebuffer.h"
> +#include "komeda_color_mgmt.h"
>
> static void get_resources_id(u32 hw_id, u32 *pipe_id, u32 *comp_id)
> {
> @@ -239,6 +240,11 @@ static void d71_layer_update(struct komeda_component *c,
> }
>
> malidp_write32(reg, LAYER_R_CONTROL, upsampling);
> + malidp_write_group(reg, LAYER_YUV_RGB_COEFF0,
> + KOMEDA_N_YUV2RGB_COEFFS,
> + komeda_select_yuv2rgb_coeffs(
> + plane_st->color_encoding,
> + plane_st->color_range));
> }
>
> malidp_write32(reg, LAYER_FMT, kfb->format_caps->hw_id);
> diff --git a/drivers/gpu/drm/arm/display/komeda/komeda_color_mgmt.c b/drivers/gpu/drm/arm/display/komeda/komeda_color_mgmt.c
> new file mode 100644
> index 0000000..9d14a92
> --- /dev/null
> +++ b/drivers/gpu/drm/arm/display/komeda/komeda_color_mgmt.c
> @@ -0,0 +1,67 @@
> +// SPDX-License-Identifier: GPL-2.0
> +/*
> + * (C) COPYRIGHT 2019 ARM Limited. All rights reserved.
> + * Author: James.Qian.Wang <james.qian.wang@xxxxxxx>
> + *
> + */
> +
> +#include "komeda_color_mgmt.h"
> +
> +/* 10bit precision YUV2RGB matrix */
> +static const s32 yuv2rgb_bt601_narrow[KOMEDA_N_YUV2RGB_COEFFS] = {
> + 1192, 0, 1634,
> + 1192, -401, -832,
> + 1192, 2066, 0,
> + 64, 512, 512
> +};
> +
> +static const s32 yuv2rgb_bt601_wide[KOMEDA_N_YUV2RGB_COEFFS] = {
> + 1024, 0, 1436,
> + 1024, -352, -731,
> + 1024, 1815, 0,
> + 0, 512, 512
> +};
> +
> +static const s32 yuv2rgb_bt709_narrow[KOMEDA_N_YUV2RGB_COEFFS] = {
> + 1192, 0, 1836,
> + 1192, -218, -546,
> + 1192, 2163, 0,
> + 64, 512, 512
> +};
> +
> +static const s32 yuv2rgb_bt709_wide[KOMEDA_N_YUV2RGB_COEFFS] = {
> + 1024, 0, 1613,
> + 1024, -192, -479,
> + 1024, 1900, 0,
> + 0, 512, 512
> +};
> +
> +static const s32 yuv2rgb_bt2020[KOMEDA_N_YUV2RGB_COEFFS] = {
> + 1024, 0, 1476,
> + 1024, -165, -572,
> + 1024, 1884, 0,
> + 0, 512, 512
> +};
> +
> +const s32 *komeda_select_yuv2rgb_coeffs(u32 color_encoding, u32 color_range)
> +{
> + bool narrow = color_range == DRM_COLOR_YCBCR_LIMITED_RANGE;
> + const s32 *coeffs;
> +
> + switch (color_encoding) {
> + case DRM_COLOR_YCBCR_BT709:
> + coeffs = narrow ? yuv2rgb_bt709_narrow : yuv2rgb_bt709_wide;
> + break;
> + case DRM_COLOR_YCBCR_BT601:
> + coeffs = narrow ? yuv2rgb_bt601_narrow : yuv2rgb_bt601_wide;
> + break;
> + case DRM_COLOR_YCBCR_BT2020:
> + coeffs = yuv2rgb_bt2020;
> + break;
> + default:
> + coeffs = NULL;
> + break;
> + }
> +
> + return coeffs;
> +}
> diff --git a/drivers/gpu/drm/arm/display/komeda/komeda_color_mgmt.h b/drivers/gpu/drm/arm/display/komeda/komeda_color_mgmt.h
> new file mode 100644
> index 0000000..a2df218
> --- /dev/null
> +++ b/drivers/gpu/drm/arm/display/komeda/komeda_color_mgmt.h
> @@ -0,0 +1,17 @@
> +/* SPDX-License-Identifier: GPL-2.0 */
> +/*
> + * (C) COPYRIGHT 2019 ARM Limited. All rights reserved.
> + * Author: James.Qian.Wang <james.qian.wang@xxxxxxx>
> + *
> + */
> +
> +#ifndef _KOMEDA_COLOR_MGMT_H_
> +#define _KOMEDA_COLOR_MGMT_H_
> +
> +#include <drm/drm_color_mgmt.h>
> +
> +#define KOMEDA_N_YUV2RGB_COEFFS 12
> +
> +const s32 *komeda_select_yuv2rgb_coeffs(u32 color_encoding, u32 color_range);
> +
> +#endif
> diff --git a/drivers/gpu/drm/arm/display/komeda/komeda_plane.c b/drivers/gpu/drm/arm/display/komeda/komeda_plane.c
> index f344048..bcf30a7 100644
> --- a/drivers/gpu/drm/arm/display/komeda/komeda_plane.c
> +++ b/drivers/gpu/drm/arm/display/komeda/komeda_plane.c
> @@ -135,6 +135,8 @@ static void komeda_plane_reset(struct drm_plane *plane)
> state->base.pixel_blend_mode = DRM_MODE_BLEND_PREMULTI;
> state->base.alpha = DRM_BLEND_ALPHA_OPAQUE;
> state->base.zpos = kplane->layer->base.id;
> + state->base.color_encoding = DRM_COLOR_YCBCR_BT601;
> + state->base.color_range = DRM_COLOR_YCBCR_LIMITED_RANGE;
> plane->state = &state->base;
> plane->state->plane = plane;
> }
> @@ -330,6 +332,17 @@ static int komeda_plane_add(struct komeda_kms_dev *kms,
> if (err)
> goto cleanup;
>
> + err = drm_plane_create_color_properties(plane,
> + BIT(DRM_COLOR_YCBCR_BT601) |
> + BIT(DRM_COLOR_YCBCR_BT709) |
> + BIT(DRM_COLOR_YCBCR_BT2020),
> + BIT(DRM_COLOR_YCBCR_LIMITED_RANGE) |
> + BIT(DRM_COLOR_YCBCR_FULL_RANGE),
> + DRM_COLOR_YCBCR_BT601,
> + DRM_COLOR_YCBCR_LIMITED_RANGE);
> + if (err)
> + goto cleanup;
> +
> return 0;
> cleanup:
> komeda_plane_destroy(plane);
> --
> 1.9.1
>
Reviewed-by: James Qian Wang (Arm Technology China) <james.qian.wang@xxxxxxx>
Looks good to me
Thank you