Re: [PATCH] drm/mediatek: Set Rotation default value to 1.

On Fri, Oct 22, 2021 at 12:54:02PM -0400, Mark Yacoub wrote:

From: Mark Yacoub markyacoub@google.com

[Why] The Rotation prob is a bitmask value. It must always have a valid value.

nit: s/prob/prop/

A default NO rotation is equal to 1 not 0.

[How]

1. At the reset hook, call __drm_atomic_helper_plane_reset which is

called at the initialization of the plane and sets the default value of all planes to DRM_MODE_ROTATE_0 which is equal to 1. 2. At the ovl layer check, do no overwrite the state->rotation value 0 if DRM_MODE_ROTATE_0 is set. We should not change the value that the userspace has set, especially if it's an unsupported value.

nit: I would probably split these into 2 patches since they're related but different

Sean

Tested on Jacuzzi(MTK). Fixes IGT@kms_properties@plane-properties-{legacy,atomic} and IGT@kms_properties@get_properties-sanity-{atomic,non-atomic}

Signed-off-by: Mark Yacoub markyacoub@chromium.org

drivers/gpu/drm/mediatek/mtk_disp_drv.h | 2 +- drivers/gpu/drm/mediatek/mtk_disp_ovl.c | 20 +++++++------------- drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.h | 5 ++--- drivers/gpu/drm/mediatek/mtk_drm_plane.c | 3 ++- 4 files changed, 12 insertions(+), 18 deletions(-)

diff --git a/drivers/gpu/drm/mediatek/mtk_disp_drv.h b/drivers/gpu/drm/mediatek/mtk_disp_drv.h index 86c3068894b11..2fc566964f68e 100644 --- a/drivers/gpu/drm/mediatek/mtk_disp_drv.h +++ b/drivers/gpu/drm/mediatek/mtk_disp_drv.h @@ -64,7 +64,7 @@ void mtk_ovl_config(struct device *dev, unsigned int w, unsigned int h, unsigned int vrefresh, unsigned int bpc, struct cmdq_pkt *cmdq_pkt); int mtk_ovl_layer_check(struct device *dev, unsigned int idx,

• 	struct mtk_plane_state *mtk_state);
  

• 	const struct mtk_plane_state *mtk_state);
  

void mtk_ovl_layer_config(struct device *dev, unsigned int idx, struct mtk_plane_state *state, struct cmdq_pkt *cmdq_pkt); diff --git a/drivers/gpu/drm/mediatek/mtk_disp_ovl.c b/drivers/gpu/drm/mediatek/mtk_disp_ovl.c index ea5760f856ec6..13999564304bc 100644 --- a/drivers/gpu/drm/mediatek/mtk_disp_ovl.c +++ b/drivers/gpu/drm/mediatek/mtk_disp_ovl.c @@ -190,19 +190,15 @@ unsigned int mtk_ovl_supported_rotations(struct device *dev) }

int mtk_ovl_layer_check(struct device *dev, unsigned int idx,

• 	struct mtk_plane_state *mtk_state)
  

• 	const struct mtk_plane_state *mtk_state)
  

{

• struct drm_plane_state *state = &mtk_state->base;
• unsigned int rotation = 0;

• const struct drm_plane_state *state = &mtk_state->base;
• unsigned int rotation = drm_rotation_simplify(

• state->rotation,
  

• DRM_MODE_ROTATE_0 | DRM_MODE_REFLECT_X | DRM_MODE_REFLECT_Y);
  
  

• 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)

• /* We can only do reflection, not non-zero rotation */

• if (((rotation & ~DRM_MODE_ROTATE_0) & DRM_MODE_ROTATE_MASK) != 0) return -EINVAL;

  /*

@@ -212,8 +208,6 @@ int mtk_ovl_layer_check(struct device *dev, unsigned int idx, if (state->fb->format->is_yuv && rotation != 0) return -EINVAL;

• state->rotation = rotation;
• return 0;

}

diff --git a/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.h b/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.h index 1b582262b682b..530bdd031933f 100644 --- a/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.h +++ b/drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.h @@ -53,9 +53,8 @@ struct mtk_ddp_comp_funcs { void (*disable_vblank)(struct device *dev); unsigned int (*supported_rotations)(struct device *dev); unsigned int (*layer_nr)(struct device *dev);

• int (*layer_check)(struct device *dev,

• 	   unsigned int idx,
  

• 	   struct mtk_plane_state *state);
  

• int (*layer_check)(struct device *dev, unsigned int idx,

• 	   const struct mtk_plane_state *state);
  

  void (*layer_config)(struct device *dev, unsigned int idx, struct mtk_plane_state *state, struct cmdq_pkt *cmdq_pkt);

diff --git a/drivers/gpu/drm/mediatek/mtk_drm_plane.c b/drivers/gpu/drm/mediatek/mtk_drm_plane.c index e6dcb34d30522..accd26481b9fb 100644 --- a/drivers/gpu/drm/mediatek/mtk_drm_plane.c +++ b/drivers/gpu/drm/mediatek/mtk_drm_plane.c @@ -44,9 +44,10 @@ static void mtk_plane_reset(struct drm_plane *plane) state = kzalloc(sizeof(*state), GFP_KERNEL); if (!state) return;

• plane->state = &state->base;
  

  }

• __drm_atomic_helper_plane_reset(plane, &state->base);
• state->base.plane = plane; state->pending.format = DRM_FORMAT_RGB565;

}

2.33.0.1079.g6e70778dc9-goog