diff options
| author | Sean Paul <seanpaul@chromium.org> | 2019-11-05 16:10:22 -0500 |
|---|---|---|
| committer | CK Hu <ck.hu@mediatek.com> | 2019-11-06 16:00:44 +0800 |
| commit | 84d805753983757ea3655acbd47887764acf293f (patch) | |
| tree | 1cc30c5a465cf03dce4c8f34d331284de3da3714 /drivers/gpu/drm/mediatek | |
| parent | ef87d3e2dd251374c5c9fa3b6502aeff8fe29da9 (diff) | |
| download | linux-84d805753983757ea3655acbd47887764acf293f.tar.bz2 | |
drm/mediatek: Support reflect-y plane rotation
Expose the rotation property and handle REFLECT_Y rotations.
Cc: Fritz Koenig <frkoenig@chromium.org>
Cc: Daniele Castagna <dcastagna@chromium.org>
Cc: Miguel Casas <mcasas@chromium.org>
Cc: Mark Yacoub <markyacoub@google.com>
Signed-off-by: Sean Paul <seanpaul@chromium.org>
Signed-off-by: CK Hu <ck.hu@mediatek.com>
Diffstat (limited to 'drivers/gpu/drm/mediatek')
| -rw-r--r-- | drivers/gpu/drm/mediatek/mtk_disp_ovl.c | 42 |
1 files changed, 42 insertions, 0 deletions
diff --git a/drivers/gpu/drm/mediatek/mtk_disp_ovl.c b/drivers/gpu/drm/mediatek/mtk_disp_ovl.c index 14878ebf59d7..fae10aead3d5 100644 --- a/drivers/gpu/drm/mediatek/mtk_disp_ovl.c +++ b/drivers/gpu/drm/mediatek/mtk_disp_ovl.c @@ -3,6 +3,8 @@ * Copyright (c) 2015 MediaTek Inc. */ +#include <drm/drm_fourcc.h> + #include <linux/clk.h> #include <linux/component.h> #include <linux/module.h> @@ -50,6 +52,7 @@ OVL_CON_CLRFMT_RGB : 0) #define OVL_CON_AEN BIT(8) #define OVL_CON_ALPHA 0xff +#define OVL_CON_VIRT_FLIP BIT(9) struct mtk_disp_ovl_data { unsigned int addr; @@ -137,6 +140,38 @@ static unsigned int mtk_ovl_layer_nr(struct mtk_ddp_comp *comp) return ovl->data->layer_nr; } +static unsigned int mtk_ovl_supported_rotations(struct mtk_ddp_comp *comp) +{ + return DRM_MODE_ROTATE_0 | DRM_MODE_REFLECT_Y; +} + +static int mtk_ovl_layer_check(struct mtk_ddp_comp *comp, 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_Y); + rotation &= ~DRM_MODE_ROTATE_0; + + /* We can only do reflection, not rotation */ + if ((rotation & DRM_MODE_ROTATE_MASK) != 0) + 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) + return -EINVAL; + + state->rotation = rotation; + + return 0; +} + static void mtk_ovl_layer_on(struct mtk_ddp_comp *comp, unsigned int idx) { unsigned int reg; @@ -229,6 +264,11 @@ static void mtk_ovl_layer_config(struct mtk_ddp_comp *comp, unsigned int idx, if (idx != 0) con |= OVL_CON_AEN | OVL_CON_ALPHA; + if (pending->rotation & DRM_MODE_REFLECT_Y) { + con |= OVL_CON_VIRT_FLIP; + addr += (pending->height - 1) * pending->pitch; + } + writel_relaxed(con, comp->regs + DISP_REG_OVL_CON(idx)); writel_relaxed(pitch, comp->regs + DISP_REG_OVL_PITCH(idx)); writel_relaxed(src_size, comp->regs + DISP_REG_OVL_SRC_SIZE(idx)); @@ -263,9 +303,11 @@ static const struct mtk_ddp_comp_funcs mtk_disp_ovl_funcs = { .stop = mtk_ovl_stop, .enable_vblank = mtk_ovl_enable_vblank, .disable_vblank = mtk_ovl_disable_vblank, + .supported_rotations = mtk_ovl_supported_rotations, .layer_nr = mtk_ovl_layer_nr, .layer_on = mtk_ovl_layer_on, .layer_off = mtk_ovl_layer_off, + .layer_check = mtk_ovl_layer_check, .layer_config = mtk_ovl_layer_config, .bgclr_in_on = mtk_ovl_bgclr_in_on, .bgclr_in_off = mtk_ovl_bgclr_in_off, |