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Message-ID: <20250321093435.94835-10-paul-pl.chen@mediatek.com>
Date: Fri, 21 Mar 2025 17:33:38 +0800
From: paul-pl.chen <paul-pl.chen@...iatek.com>
To: <robh@...nel.org>, <krzk+dt@...nel.org>, <conor+dt@...nel.org>,
<chunkuang.hu@...nel.org>, <angelogioacchino.delregno@...labora.com>
CC: <matthias.bgg@...il.com>, <p.zabel@...gutronix.de>,
<jason-jh.lin@...iatek.com>, <nancy.lin@...iatek.com>,
<singo.chang@...iatek.com>, <xiandong.wang@...iatek.com>,
<sirius.wang@...iatek.com>, <paul-pl.chen@...iatek.com>,
<sunny.shen@...iatek.com>, <fshao@...omium.org>, <treapking@...omium.org>,
<devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
<dri-devel@...ts.freedesktop.org>, <linux-mediatek@...ts.infradead.org>,
<linux-arm-kernel@...ts.infradead.org>,
<Project_Global_Chrome_Upstream_Group@...iatek.com>
Subject: [PATCH v2 09/15] drm/mediatek: Refine OVL format convert API and export to public
From: Nancy Lin <nancy.lin@...iatek.com>
Refine OVL format convert API and export to public.
Signed-off-by: Nancy Lin <nancy.lin@...iatek.com>
Signed-off-by: Paul-pl Chen <paul-pl.chen@...iatek.com>
---
drivers/gpu/drm/mediatek/mtk_disp_ovl.c | 158 ++++++++++++++++--------
drivers/gpu/drm/mediatek/mtk_disp_ovl.h | 16 +++
2 files changed, 122 insertions(+), 52 deletions(-)
create mode 100644 drivers/gpu/drm/mediatek/mtk_disp_ovl.h
diff --git a/drivers/gpu/drm/mediatek/mtk_disp_ovl.c b/drivers/gpu/drm/mediatek/mtk_disp_ovl.c
index d0581c4e3c99..e2b125a717c6 100644
--- a/drivers/gpu/drm/mediatek/mtk_disp_ovl.c
+++ b/drivers/gpu/drm/mediatek/mtk_disp_ovl.c
@@ -18,6 +18,7 @@
#include "mtk_crtc.h"
#include "mtk_ddp_comp.h"
#include "mtk_disp_drv.h"
+#include "mtk_disp_ovl.h"
#include "mtk_drm_drv.h"
#define DISP_REG_OVL_INTEN 0x0004
@@ -62,22 +63,15 @@
/* OVL_CON_RGB_SWAP works only if OVL_CON_CLRFMT_MAN is enabled */
#define OVL_CON_RGB_SWAP BIT(25)
-#define OVL_CON_CLRFMT_RGB (1 << 12)
-#define OVL_CON_CLRFMT_ARGB8888 (2 << 12)
-#define OVL_CON_CLRFMT_RGBA8888 (3 << 12)
-#define OVL_CON_CLRFMT_ABGR8888 (OVL_CON_CLRFMT_ARGB8888 | OVL_CON_BYTE_SWAP)
-#define OVL_CON_CLRFMT_BGRA8888 (OVL_CON_CLRFMT_RGBA8888 | OVL_CON_BYTE_SWAP)
-#define OVL_CON_CLRFMT_UYVY (4 << 12)
-#define OVL_CON_CLRFMT_YUYV (5 << 12)
-#define OVL_CON_MTX_YUV_TO_RGB (6 << 16)
-#define OVL_CON_CLRFMT_PARGB8888 ((3 << 12) | OVL_CON_CLRFMT_MAN)
-#define OVL_CON_CLRFMT_PABGR8888 (OVL_CON_CLRFMT_PARGB8888 | OVL_CON_RGB_SWAP)
-#define OVL_CON_CLRFMT_PBGRA8888 (OVL_CON_CLRFMT_PARGB8888 | OVL_CON_BYTE_SWAP)
-#define OVL_CON_CLRFMT_PRGBA8888 (OVL_CON_CLRFMT_PABGR8888 | OVL_CON_BYTE_SWAP)
-#define OVL_CON_CLRFMT_RGB565(ovl) ((ovl)->data->fmt_rgb565_is_0 ? \
- 0 : OVL_CON_CLRFMT_RGB)
-#define OVL_CON_CLRFMT_RGB888(ovl) ((ovl)->data->fmt_rgb565_is_0 ? \
- OVL_CON_CLRFMT_RGB : 0)
+#define OVL_CON_CLRFMT_RGB565(shift) (0 << (shift))
+#define OVL_CON_CLRFMT_RGB888(shift) (1 << (shift))
+#define OVL_CON_CLRFMT_ARGB8888(shift) (2 << (shift))
+#define OVL_CON_CLRFMT_RGBA8888(shift) (3 << (shift))
+#define OVL_CON_CLRFMT_UYVY(shift) (4 << (shift))
+#define OVL_CON_CLRFMT_YUYV(shift) (5 << (shift))
+#define OVL_CON_MTX_YUV_TO_RGB (6 << 16)
+#define OVL_CON_CLRFMT_PARGB8888(shift, man) ((3 << (shift)) | (man))
+
#define OVL_CON_AEN BIT(8)
#define OVL_CON_ALPHA 0xff
#define OVL_CON_VIRT_FLIP BIT(9)
@@ -85,7 +79,7 @@
#define OVL_COLOR_ALPHA GENMASK(31, 24)
-static inline bool is_10bit_rgb(u32 fmt)
+bool mtk_ovl_is_10bit_rgb(unsigned int fmt)
{
switch (fmt) {
case DRM_FORMAT_XRGB2101010:
@@ -295,7 +289,7 @@ static void mtk_ovl_set_bit_depth(struct device *dev, int idx, u32 format,
if (!ovl->data->supports_clrfmt_ext)
return;
- if (is_10bit_rgb(format))
+ if (mtk_ovl_is_10bit_rgb(format))
bit_depth = OVL_CON_CLRFMT_10_BIT;
mtk_ddp_write_mask(cmdq_pkt, OVL_CON_CLRFMT_BIT_DEPTH(bit_depth, idx),
@@ -394,10 +388,26 @@ void mtk_ovl_layer_off(struct device *dev, unsigned int idx,
DISP_REG_OVL_RDMA_CTRL(idx));
}
-static unsigned int mtk_ovl_fmt_convert(struct mtk_disp_ovl *ovl,
- struct mtk_plane_state *state)
+bool mtk_ovl_is_ignore_pixel_alpha(struct mtk_plane_state *state, unsigned int blend_mode)
+{
+ if (!state->base.fb)
+ return false;
+
+ /*
+ * Although the alpha channel can be ignored, CONST_BLD must be enabled
+ * for XRGB format, otherwise OVL will still read the value from memory.
+ * For RGB888 related formats, whether CONST_BLD is enabled or not won't
+ * affect the result. Therefore we use !has_alpha as the condition.
+ */
+
+ if (blend_mode == DRM_MODE_BLEND_PIXEL_NONE || !state->base.fb->format->has_alpha)
+ return true;
+
+ return false;
+}
+
+unsigned int mtk_ovl_get_blend_mode(struct mtk_plane_state *state, unsigned int blend_modes)
{
- unsigned int fmt = state->pending.format;
unsigned int blend_mode = DRM_MODE_BLEND_COVERAGE;
/*
@@ -412,52 +422,102 @@ static unsigned int mtk_ovl_fmt_convert(struct mtk_disp_ovl *ovl,
* will get an error return from drm_plane_create_blend_mode_property() and
* state->base.pixel_blend_mode should not be used.
*/
- if (ovl->data->blend_modes & BIT(DRM_MODE_BLEND_PREMULTI))
+ if (blend_modes & BIT(DRM_MODE_BLEND_PREMULTI))
blend_mode = state->base.pixel_blend_mode;
+ return blend_mode;
+}
+
+unsigned int mtk_ovl_fmt_convert(unsigned int fmt, unsigned int blend_mode,
+ bool fmt_rgb565_is_0, bool color_convert,
+ u8 clrfmt_shift, u32 clrfmt_man, u32 byte_swap, u32 rgb_swap)
+{
+ unsigned int con = 0;
+ bool need_byte_swap = false, need_rgb_swap = false;
+
switch (fmt) {
default:
case DRM_FORMAT_RGB565:
- return OVL_CON_CLRFMT_RGB565(ovl);
+ con = fmt_rgb565_is_0 ?
+ OVL_CON_CLRFMT_RGB565(clrfmt_shift) : OVL_CON_CLRFMT_RGB888(clrfmt_shift);
+ break;
case DRM_FORMAT_BGR565:
- return OVL_CON_CLRFMT_RGB565(ovl) | OVL_CON_BYTE_SWAP;
+ con = fmt_rgb565_is_0 ?
+ OVL_CON_CLRFMT_RGB565(clrfmt_shift) : OVL_CON_CLRFMT_RGB888(clrfmt_shift);
+ need_byte_swap = true; /* RGB565 -> BGR565 */
+ break;
case DRM_FORMAT_RGB888:
- return OVL_CON_CLRFMT_RGB888(ovl);
+ con = fmt_rgb565_is_0 ?
+ OVL_CON_CLRFMT_RGB888(clrfmt_shift) : OVL_CON_CLRFMT_RGB565(clrfmt_shift);
+ break;
case DRM_FORMAT_BGR888:
- return OVL_CON_CLRFMT_RGB888(ovl) | OVL_CON_BYTE_SWAP;
+ con = fmt_rgb565_is_0 ?
+ OVL_CON_CLRFMT_RGB888(clrfmt_shift) : OVL_CON_CLRFMT_RGB565(clrfmt_shift);
+ need_byte_swap = true; /* RGB888 -> BGR888 */
+ break;
case DRM_FORMAT_RGBX8888:
case DRM_FORMAT_RGBA8888:
case DRM_FORMAT_RGBX1010102:
case DRM_FORMAT_RGBA1010102:
- return blend_mode == DRM_MODE_BLEND_COVERAGE ?
- OVL_CON_CLRFMT_RGBA8888 :
- OVL_CON_CLRFMT_PRGBA8888;
+ if (blend_mode == DRM_MODE_BLEND_COVERAGE) {
+ con = OVL_CON_CLRFMT_RGBA8888(clrfmt_shift);
+ } else {
+ con = OVL_CON_CLRFMT_PARGB8888(clrfmt_shift, clrfmt_man);
+ need_byte_swap = true; /* PARGB8888 -> PBGRA8888 */
+ need_rgb_swap = true; /* PBGRA8888 -> PRGBA8888 */
+ }
+ break;
case DRM_FORMAT_BGRX8888:
case DRM_FORMAT_BGRA8888:
case DRM_FORMAT_BGRX1010102:
case DRM_FORMAT_BGRA1010102:
- return blend_mode == DRM_MODE_BLEND_COVERAGE ?
- OVL_CON_CLRFMT_BGRA8888 :
- OVL_CON_CLRFMT_PBGRA8888;
+ if (blend_mode == DRM_MODE_BLEND_COVERAGE) {
+ con = OVL_CON_CLRFMT_RGBA8888(clrfmt_shift);
+ need_byte_swap = true; /* RGB8888 -> BGR8888 */
+ } else {
+ con = OVL_CON_CLRFMT_PARGB8888(clrfmt_shift, clrfmt_man);
+ need_byte_swap = true; /* PARGB8888 -> PBGRA8888 */
+ }
+ break;
case DRM_FORMAT_XRGB8888:
case DRM_FORMAT_ARGB8888:
case DRM_FORMAT_XRGB2101010:
case DRM_FORMAT_ARGB2101010:
- return blend_mode == DRM_MODE_BLEND_COVERAGE ?
- OVL_CON_CLRFMT_ARGB8888 :
- OVL_CON_CLRFMT_PARGB8888;
+ if (blend_mode == DRM_MODE_BLEND_COVERAGE)
+ con = OVL_CON_CLRFMT_ARGB8888(clrfmt_shift);
+ else
+ con = OVL_CON_CLRFMT_PARGB8888(clrfmt_shift, clrfmt_man);
+ break;
case DRM_FORMAT_XBGR8888:
case DRM_FORMAT_ABGR8888:
case DRM_FORMAT_XBGR2101010:
case DRM_FORMAT_ABGR2101010:
- return blend_mode == DRM_MODE_BLEND_COVERAGE ?
- OVL_CON_CLRFMT_ABGR8888 :
- OVL_CON_CLRFMT_PABGR8888;
+ if (blend_mode == DRM_MODE_BLEND_COVERAGE) {
+ con = OVL_CON_CLRFMT_ARGB8888(clrfmt_shift);
+ need_rgb_swap = true; /* ARGB8888 -> ABGR8888 */
+ } else {
+ con = OVL_CON_CLRFMT_PARGB8888(clrfmt_shift, clrfmt_man);
+ need_rgb_swap = true; /* PARGB8888 -> PABGR8888 */
+ }
+ break;
case DRM_FORMAT_UYVY:
- return OVL_CON_CLRFMT_UYVY | OVL_CON_MTX_YUV_TO_RGB;
+ con = OVL_CON_CLRFMT_UYVY(clrfmt_shift);
+ break;
case DRM_FORMAT_YUYV:
- return OVL_CON_CLRFMT_YUYV | OVL_CON_MTX_YUV_TO_RGB;
+ con = OVL_CON_CLRFMT_YUYV(clrfmt_shift);
+ break;
}
+
+ if (color_convert)
+ con |= OVL_CON_MTX_YUV_TO_RGB;
+
+ if (need_byte_swap)
+ con |= byte_swap;
+
+ if (need_rgb_swap)
+ con |= rgb_swap;
+
+ return con;
}
static void mtk_ovl_afbc_layer_config(struct mtk_disp_ovl *ovl,
@@ -495,7 +555,7 @@ void mtk_ovl_layer_config(struct device *dev, unsigned int idx,
unsigned int rotation = pending->rotation;
unsigned int offset = (pending->y << 16) | pending->x;
unsigned int src_size = (pending->height << 16) | pending->width;
- unsigned int blend_mode = state->base.pixel_blend_mode;
+ unsigned int blend_mode = mtk_ovl_get_blend_mode(state, ovl->data->blend_modes);
unsigned int ignore_pixel_alpha = 0;
unsigned int con;
@@ -504,7 +564,8 @@ void mtk_ovl_layer_config(struct device *dev, unsigned int idx,
return;
}
- con = mtk_ovl_fmt_convert(ovl, state);
+ con = mtk_ovl_fmt_convert(fmt, blend_mode, ovl->data->fmt_rgb565_is_0, true,
+ 12, OVL_CON_CLRFMT_MAN, OVL_CON_BYTE_SWAP, OVL_CON_RGB_SWAP);
if (state->base.fb) {
con |= state->base.alpha & OVL_CON_ALPHA;
@@ -512,17 +573,8 @@ void mtk_ovl_layer_config(struct device *dev, unsigned int idx,
* For blend_modes supported SoCs, always enable alpha blending.
* For blend_modes unsupported SoCs, enable alpha blending when has_alpha is set.
*/
- if (blend_mode || state->base.fb->format->has_alpha)
+ if (state->base.pixel_blend_mode || state->base.fb->format->has_alpha)
con |= OVL_CON_AEN;
-
- /*
- * Although the alpha channel can be ignored, CONST_BLD must be enabled
- * for XRGB format, otherwise OVL will still read the value from memory.
- * For RGB888 related formats, whether CONST_BLD is enabled or not won't
- * affect the result. Therefore we use !has_alpha as the condition.
- */
- if (blend_mode == DRM_MODE_BLEND_PIXEL_NONE || !state->base.fb->format->has_alpha)
- ignore_pixel_alpha = OVL_CONST_BLEND;
}
/*
@@ -548,6 +600,8 @@ void mtk_ovl_layer_config(struct device *dev, unsigned int idx,
mtk_ddp_write_relaxed(cmdq_pkt, con, &ovl->cmdq_reg, ovl->regs,
DISP_REG_OVL_CON(idx));
+
+ ignore_pixel_alpha = mtk_ovl_is_ignore_pixel_alpha(state, blend_mode) ? OVL_CONST_BLEND : 0;
mtk_ddp_write_relaxed(cmdq_pkt, pitch_lsb | ignore_pixel_alpha,
&ovl->cmdq_reg, ovl->regs, DISP_REG_OVL_PITCH(idx));
mtk_ddp_write_relaxed(cmdq_pkt, src_size, &ovl->cmdq_reg, ovl->regs,
diff --git a/drivers/gpu/drm/mediatek/mtk_disp_ovl.h b/drivers/gpu/drm/mediatek/mtk_disp_ovl.h
new file mode 100644
index 000000000000..9bd5dc62d626
--- /dev/null
+++ b/drivers/gpu/drm/mediatek/mtk_disp_ovl.h
@@ -0,0 +1,16 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * Copyright (c) 2025 MediaTek Inc.
+ */
+
+#ifndef __MTK_DISP_OVL_H__
+#define __MTK_DISP_OVL_H__
+
+bool mtk_ovl_is_10bit_rgb(unsigned int fmt);
+bool mtk_ovl_is_ignore_pixel_alpha(struct mtk_plane_state *state, unsigned int blend_mode);
+unsigned int mtk_ovl_get_blend_mode(struct mtk_plane_state *state, unsigned int blend_modes);
+unsigned int mtk_ovl_fmt_convert(unsigned int fmt, unsigned int blend_mode,
+ bool fmt_rgb565_is_0, bool color_convert,
+ u8 clrfmt_shift, u32 clrfmt_man, u32 byte_swap, u32 rgb_swap);
+
+#endif
--
2.45.2
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