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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>
This commit is contained in:
Sean Paul 2019-11-05 16:10:22 -05:00 committed by CK Hu
parent ef87d3e2dd
commit 84d8057539
1 changed files with 42 additions and 0 deletions
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42
drivers/gpu/drm/mediatek/mtk_disp_ovl.c
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@ -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,