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Message-ID: <20231120071246.30823-2-shawn.sung@mediatek.com>
Date: Mon, 20 Nov 2023 15:12:46 +0800
From: Hsiao Chien Sung <shawn.sung@...iatek.com>
To: Chun-Kuang Hu <chunkuang.hu@...nel.org>,
AngeloGioacchino Del Regno
<angelogioacchino.delregno@...labora.com>
CC: Philipp Zabel <p.zabel@...gutronix.de>,
David Airlie <airlied@...il.com>,
Daniel Vetter <daniel@...ll.ch>,
Matthias Brugger <matthias.bgg@...il.com>,
Sean Paul <seanpaul@...omium.org>, CK Hu <ck.hu@...iatek.com>,
<dri-devel@...ts.freedesktop.org>,
<linux-mediatek@...ts.infradead.org>,
<linux-arm-kernel@...ts.infradead.org>,
<linux-kernel@...r.kernel.org>,
Hsiao Chien Sung <shawn.sung@...iatek.com>
Subject: [PATCH v3 1/1] drm/mediatek: Fix errors when reporting rotation capability
Create rotation property according to the hardware capability.
Fixes: 84d805753983 ("drm/mediatek: Support reflect-y plane rotation")
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>
Signed-off-by: Hsiao Chien Sung <shawn.sung@...iatek.com>
---
drivers/gpu/drm/mediatek/mtk_disp_drv.h | 1 +
drivers/gpu/drm/mediatek/mtk_disp_ovl.c | 30 ++++++++++---------
.../gpu/drm/mediatek/mtk_disp_ovl_adaptor.c | 5 ++++
drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.c | 1 +
drivers/gpu/drm/mediatek/mtk_drm_plane.c | 2 +-
5 files changed, 24 insertions(+), 15 deletions(-)
diff --git a/drivers/gpu/drm/mediatek/mtk_disp_drv.h b/drivers/gpu/drm/mediatek/mtk_disp_drv.h
index 4d6e8b667bc3..c5afeb7c5527 100644
--- a/drivers/gpu/drm/mediatek/mtk_disp_drv.h
+++ b/drivers/gpu/drm/mediatek/mtk_disp_drv.h
@@ -127,6 +127,7 @@ void mtk_ovl_adaptor_register_vblank_cb(struct device *dev, void (*vblank_cb)(vo
void mtk_ovl_adaptor_unregister_vblank_cb(struct device *dev);
void mtk_ovl_adaptor_enable_vblank(struct device *dev);
void mtk_ovl_adaptor_disable_vblank(struct device *dev);
+unsigned int mtk_ovl_adaptor_supported_rotations(struct device *dev);
void mtk_ovl_adaptor_start(struct device *dev);
void mtk_ovl_adaptor_stop(struct device *dev);
unsigned int mtk_ovl_adaptor_layer_nr(struct device *dev);
diff --git a/drivers/gpu/drm/mediatek/mtk_disp_ovl.c b/drivers/gpu/drm/mediatek/mtk_disp_ovl.c
index ecc38932fd44..285987c1ccc7 100644
--- a/drivers/gpu/drm/mediatek/mtk_disp_ovl.c
+++ b/drivers/gpu/drm/mediatek/mtk_disp_ovl.c
@@ -177,6 +177,7 @@ static const u32 mt8195_ovl_crc_ofs[] = {
* @supports_clrfmt_ext: whether the ovl supports clear format (for alpha blend)
* @crc_ofs: crc offset table
* @crc_cnt: count of crc registers (could be more than one bank)
+ * @rotations: supported rotations
*/
struct mtk_disp_ovl_data {
unsigned int addr;
@@ -190,6 +191,7 @@ struct mtk_disp_ovl_data {
bool supports_clrfmt_ext;
const u32 *crc_ofs;
size_t crc_cnt;
+ unsigned int rotations;
};
/**
@@ -415,35 +417,26 @@ unsigned int mtk_ovl_layer_nr(struct device *dev)
unsigned int mtk_ovl_supported_rotations(struct device *dev)
{
- return DRM_MODE_ROTATE_0 | DRM_MODE_ROTATE_180 |
- DRM_MODE_REFLECT_X | DRM_MODE_REFLECT_Y;
+ struct mtk_disp_ovl *ovl = dev_get_drvdata(dev);
+
+ return ovl->data->rotations ?: 0;
}
int mtk_ovl_layer_check(struct device *dev, unsigned int idx,
struct mtk_plane_state *mtk_state)
{
struct drm_plane_state *state = &mtk_state->base;
- unsigned int rotation = 0;
- rotation = drm_rotation_simplify(state->rotation,
- DRM_MODE_ROTATE_0 |
- DRM_MODE_REFLECT_X |
- DRM_MODE_REFLECT_Y);
- rotation &= ~DRM_MODE_ROTATE_0;
-
- /* We can only do reflection, not rotation */
- if ((rotation & DRM_MODE_ROTATE_MASK) != 0)
+ if (state->rotation & ~mtk_ovl_supported_rotations(dev))
return -EINVAL;
/*
* TODO: Rotating/reflecting YUV buffers is not supported at this time.
* Only RGB[AX] variants are supported.
*/
- if (state->fb->format->is_yuv && rotation != 0)
+ if (state->fb->format->is_yuv && (state->rotation & ~DRM_MODE_ROTATE_0))
return -EINVAL;
- state->rotation = rotation;
-
return 0;
}
@@ -883,6 +876,15 @@ static const struct mtk_disp_ovl_data mt8195_ovl_driver_data = {
.supports_clrfmt_ext = true,
.crc_ofs = mt8195_ovl_crc_ofs,
.crc_cnt = ARRAY_SIZE(mt8195_ovl_crc_ofs),
+
+ /*
+ * although OVL only supports reflections on MT8195,
+ * reflect x + reflect y = rotate 180
+ */
+ .rotations = DRM_MODE_ROTATE_0 |
+ DRM_MODE_ROTATE_180 |
+ DRM_MODE_REFLECT_X |
+ DRM_MODE_REFLECT_Y,
};
static const struct of_device_id mtk_disp_ovl_driver_dt_match[] = {
diff --git a/drivers/gpu/drm/mediatek/mtk_disp_ovl_adaptor.c b/drivers/gpu/drm/mediatek/mtk_disp_ovl_adaptor.c
index 4398db9a6276..b0d3ebdba93a 100644
--- a/drivers/gpu/drm/mediatek/mtk_disp_ovl_adaptor.c
+++ b/drivers/gpu/drm/mediatek/mtk_disp_ovl_adaptor.c
@@ -383,6 +383,11 @@ void mtk_ovl_adaptor_register_vblank_cb(struct device *dev, void (*vblank_cb)(vo
vblank_cb, vblank_cb_data);
}
+unsigned int mtk_ovl_adaptor_supported_rotations(struct device *dev)
+{
+ return DRM_MODE_ROTATE_0;
+}
+
void mtk_ovl_adaptor_unregister_vblank_cb(struct device *dev)
{
struct mtk_disp_ovl_adaptor *ovl_adaptor = dev_get_drvdata(dev);
diff --git a/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.c b/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.c
index ffa4868b1222..206dd6f6f99e 100644
--- a/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.c
+++ b/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.c
@@ -422,6 +422,7 @@ static const struct mtk_ddp_comp_funcs ddp_ovl_adaptor = {
.remove = mtk_ovl_adaptor_remove_comp,
.get_formats = mtk_ovl_adaptor_get_formats,
.get_num_formats = mtk_ovl_adaptor_get_num_formats,
+ .supported_rotations = mtk_ovl_adaptor_supported_rotations,
};
static const char * const mtk_ddp_comp_stem[MTK_DDP_COMP_TYPE_MAX] = {
diff --git a/drivers/gpu/drm/mediatek/mtk_drm_plane.c b/drivers/gpu/drm/mediatek/mtk_drm_plane.c
index e2ec61b69618..894c39a38a58 100644
--- a/drivers/gpu/drm/mediatek/mtk_drm_plane.c
+++ b/drivers/gpu/drm/mediatek/mtk_drm_plane.c
@@ -344,7 +344,7 @@ int mtk_plane_init(struct drm_device *dev, struct drm_plane *plane,
return err;
}
- if (supported_rotations & ~DRM_MODE_ROTATE_0) {
+ if (supported_rotations) {
err = drm_plane_create_rotation_property(plane,
DRM_MODE_ROTATE_0,
supported_rotations);
--
2.39.2
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