[PATCH v2 0/2] YUV support for VOP2 background color

[Cristian Ciocaltea]

Since commit bec7cbfa7d4f ("drm/rockchip: vop2: Support setting custom
background color") the VOP2 display controller allows configuring the
background color of each video output port.

However, this is currently limited to RGB formats.  When operating in
YUV overlay mode, the color must be programmed using YUV format.

Add the necessary RGB-to-YCbCr conversion logic, covering all color
spaces supported by the display controller: BT601L, BT601F, BT709L and
BT2020L.

Signed-off-by: Cristian Ciocaltea <cristian.ciocaltea at collabora.com>
---
Changes in v2:
- Used vop2_convert_csc_mode() helper to address an issue reported by
  vcstate->color_space holds a V4L2 colorspace enum
- Rebased onto latest drm-misc-next
- Link to v1: https://patch.msgid.link/20260524-vop2-bg-yuv-v1-0-dcb6a52923f5@collabora.com

To: Sandy Huang <hjc at rock-chips.com>
To: Heiko Stübner <heiko at sntech.de>
To: Andy Yan <andy.yan at rock-chips.com>
To: Maarten Lankhorst <maarten.lankhorst at linux.intel.com>
To: Maxime Ripard <mripard at kernel.org>
To: Thomas Zimmermann <tzimmermann at suse.de>
To: David Airlie <airlied at gmail.com>
To: Simona Vetter <simona at ffwll.ch>
Cc: kernel at collabora.com
Cc: dri-devel at lists.freedesktop.org
Cc: linux-arm-kernel at lists.infradead.org
Cc: linux-rockchip at lists.infradead.org
Cc: linux-kernel at vger.kernel.org
Sashiko: vop2_rgb16_to_yuv16() expects an enum vop_csc_format, but

---
Cristian Ciocaltea (2):
      drm/rockchip: vop2: Rename CSC_BT2020 to CSC_BT2020L
      drm/rockchip: vop2: Add YUV support to background color

 drivers/gpu/drm/rockchip/rockchip_drm_vop2.c | 155 ++++++++++++++++++++++++---
 drivers/gpu/drm/rockchip/rockchip_drm_vop2.h |   2 +-
 2 files changed, 140 insertions(+), 17 deletions(-)
---
base-commit: e84b07e0a30b371117f9a1120a4645c213f39cd9
change-id: 20260524-vop2-bg-yuv-1b0e6a09c579