drm/mediatek: Support reflect-y plane rotation (84d80575) · Commits · 戴 / test

drivers/gpu/drm/mediatek/mtk_disp_ovl.c

+42 −0

Original line number	Diff line number	Diff line
		@@ -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,

Admin message