Re: [PATCH v2 05/11] drm/exynos/mixer: remove mixer_resources sub-structure

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2017년 09월 29일 19:05에 Andrzej Hajda 이(가) 쓴 글:
> mixer_resources adds only unnecessary redirection, removing it makes the
> code shorter and cleaner.
> 
> Signed-off-by: Andrzej Hajda <a.hajda@xxxxxxxxxxx>
> Reviewed-by: Tobias Jakobi <tjakobi@xxxxxxxxxxxxxxxxxxxxx>
> ---
>  drivers/gpu/drm/exynos/exynos_mixer.c | 323 ++++++++++++++++------------------
>  1 file changed, 147 insertions(+), 176 deletions(-)
> 
> diff --git a/drivers/gpu/drm/exynos/exynos_mixer.c b/drivers/gpu/drm/exynos/exynos_mixer.c
> index fba120346189..2d8905ea0141 100644
> --- a/drivers/gpu/drm/exynos/exynos_mixer.c
> +++ b/drivers/gpu/drm/exynos/exynos_mixer.c
> @@ -67,19 +67,6 @@
>  #define MXR_FORMAT_ARGB4444	6
>  #define MXR_FORMAT_ARGB8888	7
>  
> -struct mixer_resources {
> -	int			irq;
> -	void __iomem		*mixer_regs;
> -	void __iomem		*vp_regs;
> -	spinlock_t		reg_slock;
> -	struct clk		*mixer;
> -	struct clk		*vp;
> -	struct clk		*hdmi;
> -	struct clk		*sclk_mixer;
> -	struct clk		*sclk_hdmi;
> -	struct clk		*mout_mixer;
> -};
> -
>  enum mixer_version_id {
>  	MXR_VER_0_0_0_16,
>  	MXR_VER_16_0_33_0,
> @@ -117,7 +104,16 @@ struct mixer_context {
>  	struct exynos_drm_plane	planes[MIXER_WIN_NR];
>  	unsigned long		flags;
>  
> -	struct mixer_resources	mixer_res;
> +	int			irq;
> +	void __iomem		*mixer_regs;
> +	void __iomem		*vp_regs;
> +	spinlock_t		reg_slock;
> +	struct clk		*mixer;
> +	struct clk		*vp;
> +	struct clk		*hdmi;
> +	struct clk		*sclk_mixer;
> +	struct clk		*sclk_hdmi;
> +	struct clk		*mout_mixer;
>  	enum mixer_version_id	mxr_ver;
>  };
>  
> @@ -194,44 +190,44 @@ static inline bool is_alpha_format(unsigned int pixel_format)
>  	}
>  }
>  
> -static inline u32 vp_reg_read(struct mixer_resources *res, u32 reg_id)
> +static inline u32 vp_reg_read(struct mixer_context *ctx, u32 reg_id)
>  {
> -	return readl(res->vp_regs + reg_id);
> +	return readl(ctx->vp_regs + reg_id);
>  }
>  
> -static inline void vp_reg_write(struct mixer_resources *res, u32 reg_id,
> +static inline void vp_reg_write(struct mixer_context *ctx, u32 reg_id,
>  				 u32 val)
>  {
> -	writel(val, res->vp_regs + reg_id);
> +	writel(val, ctx->vp_regs + reg_id);
>  }
>  
> -static inline void vp_reg_writemask(struct mixer_resources *res, u32 reg_id,
> +static inline void vp_reg_writemask(struct mixer_context *ctx, u32 reg_id,
>  				 u32 val, u32 mask)
>  {
> -	u32 old = vp_reg_read(res, reg_id);
> +	u32 old = vp_reg_read(ctx, reg_id);
>  
>  	val = (val & mask) | (old & ~mask);
> -	writel(val, res->vp_regs + reg_id);
> +	writel(val, ctx->vp_regs + reg_id);
>  }
>  
> -static inline u32 mixer_reg_read(struct mixer_resources *res, u32 reg_id)
> +static inline u32 mixer_reg_read(struct mixer_context *ctx, u32 reg_id)
>  {
> -	return readl(res->mixer_regs + reg_id);
> +	return readl(ctx->mixer_regs + reg_id);
>  }
>  
> -static inline void mixer_reg_write(struct mixer_resources *res, u32 reg_id,
> +static inline void mixer_reg_write(struct mixer_context *ctx, u32 reg_id,
>  				 u32 val)
>  {
> -	writel(val, res->mixer_regs + reg_id);
> +	writel(val, ctx->mixer_regs + reg_id);
>  }
>  
> -static inline void mixer_reg_writemask(struct mixer_resources *res,
> +static inline void mixer_reg_writemask(struct mixer_context *ctx,
>  				 u32 reg_id, u32 val, u32 mask)
>  {
> -	u32 old = mixer_reg_read(res, reg_id);
> +	u32 old = mixer_reg_read(ctx, reg_id);
>  
>  	val = (val & mask) | (old & ~mask);
> -	writel(val, res->mixer_regs + reg_id);
> +	writel(val, ctx->mixer_regs + reg_id);
>  }
>  
>  static void mixer_regs_dump(struct mixer_context *ctx)
> @@ -239,7 +235,7 @@ static void mixer_regs_dump(struct mixer_context *ctx)
>  #define DUMPREG(reg_id) \
>  do { \
>  	DRM_DEBUG_KMS(#reg_id " = %08x\n", \
> -		(u32)readl(ctx->mixer_res.mixer_regs + reg_id)); \
> +		(u32)readl(ctx->mixer_regs + reg_id)); \
>  } while (0)
>  
>  	DUMPREG(MXR_STATUS);
> @@ -271,7 +267,7 @@ static void vp_regs_dump(struct mixer_context *ctx)
>  #define DUMPREG(reg_id) \
>  do { \
>  	DRM_DEBUG_KMS(#reg_id " = %08x\n", \
> -		(u32) readl(ctx->mixer_res.vp_regs + reg_id)); \
> +		(u32) readl(ctx->vp_regs + reg_id)); \
>  } while (0)
>  
>  	DUMPREG(VP_ENABLE);
> @@ -301,7 +297,7 @@ do { \
>  #undef DUMPREG
>  }
>  
> -static inline void vp_filter_set(struct mixer_resources *res,
> +static inline void vp_filter_set(struct mixer_context *ctx,
>  		int reg_id, const u8 *data, unsigned int size)
>  {
>  	/* assure 4-byte align */
> @@ -309,24 +305,23 @@ static inline void vp_filter_set(struct mixer_resources *res,
>  	for (; size; size -= 4, reg_id += 4, data += 4) {
>  		u32 val = (data[0] << 24) |  (data[1] << 16) |
>  			(data[2] << 8) | data[3];
> -		vp_reg_write(res, reg_id, val);
> +		vp_reg_write(ctx, reg_id, val);
>  	}
>  }
>  
> -static void vp_default_filter(struct mixer_resources *res)
> +static void vp_default_filter(struct mixer_context *ctx)
>  {
> -	vp_filter_set(res, VP_POLY8_Y0_LL,
> +	vp_filter_set(ctx, VP_POLY8_Y0_LL,
>  		filter_y_horiz_tap8, sizeof(filter_y_horiz_tap8));
> -	vp_filter_set(res, VP_POLY4_Y0_LL,
> +	vp_filter_set(ctx, VP_POLY4_Y0_LL,
>  		filter_y_vert_tap4, sizeof(filter_y_vert_tap4));
> -	vp_filter_set(res, VP_POLY4_C0_LL,
> +	vp_filter_set(ctx, VP_POLY4_C0_LL,
>  		filter_cr_horiz_tap4, sizeof(filter_cr_horiz_tap4));
>  }
>  
>  static void mixer_cfg_gfx_blend(struct mixer_context *ctx, unsigned int win,
>  				bool alpha)
>  {
> -	struct mixer_resources *res = &ctx->mixer_res;
>  	u32 val;
>  
>  	val  = MXR_GRP_CFG_COLOR_KEY_DISABLE; /* no blank key */
> @@ -335,13 +330,12 @@ static void mixer_cfg_gfx_blend(struct mixer_context *ctx, unsigned int win,
>  		val |= MXR_GRP_CFG_BLEND_PRE_MUL;
>  		val |= MXR_GRP_CFG_PIXEL_BLEND_EN;
>  	}
> -	mixer_reg_writemask(res, MXR_GRAPHIC_CFG(win),
> +	mixer_reg_writemask(ctx, MXR_GRAPHIC_CFG(win),
>  			    val, MXR_GRP_CFG_MISC_MASK);
>  }
>  
>  static void mixer_cfg_vp_blend(struct mixer_context *ctx)
>  {
> -	struct mixer_resources *res = &ctx->mixer_res;
>  	u32 val;
>  
>  	/*
> @@ -351,25 +345,22 @@ static void mixer_cfg_vp_blend(struct mixer_context *ctx)
>  	 * support blending of the video layer through this.
>  	 */
>  	val = 0;
> -	mixer_reg_write(res, MXR_VIDEO_CFG, val);
> +	mixer_reg_write(ctx, MXR_VIDEO_CFG, val);
>  }
>  
>  static void mixer_vsync_set_update(struct mixer_context *ctx, bool enable)
>  {
> -	struct mixer_resources *res = &ctx->mixer_res;
> -
>  	/* block update on vsync */
> -	mixer_reg_writemask(res, MXR_STATUS, enable ?
> +	mixer_reg_writemask(ctx, MXR_STATUS, enable ?
>  			MXR_STATUS_SYNC_ENABLE : 0, MXR_STATUS_SYNC_ENABLE);
>  
>  	if (test_bit(MXR_BIT_VP_ENABLED, &ctx->flags))
> -		vp_reg_write(res, VP_SHADOW_UPDATE, enable ?
> +		vp_reg_write(ctx, VP_SHADOW_UPDATE, enable ?
>  			VP_SHADOW_UPDATE_ENABLE : 0);
>  }
>  
>  static void mixer_cfg_scan(struct mixer_context *ctx, int width, int height)
>  {
> -	struct mixer_resources *res = &ctx->mixer_res;
>  	u32 val;
>  
>  	/* choosing between interlace and progressive mode */
> @@ -378,7 +369,7 @@ static void mixer_cfg_scan(struct mixer_context *ctx, int width, int height)
>  
>  	/* setup display size */
>  	if (ctx->mxr_ver == MXR_VER_128_0_0_184) {
> -		mixer_reg_write(&ctx->mixer_res, MXR_RESOLUTION,
> +		mixer_reg_write(ctx, MXR_RESOLUTION,
>  			MXR_MXR_RES_HEIGHT(height) | MXR_MXR_RES_WIDTH(width));
>  	} else {
>  		/* choosing between proper HD and SD mode */
> @@ -394,12 +385,11 @@ static void mixer_cfg_scan(struct mixer_context *ctx, int width, int height)
>  			val |= MXR_CFG_SCAN_HD_720 | MXR_CFG_SCAN_HD;
>  	}
>  
> -	mixer_reg_writemask(res, MXR_CFG, val, MXR_CFG_SCAN_MASK);
> +	mixer_reg_writemask(ctx, MXR_CFG, val, MXR_CFG_SCAN_MASK);
>  }
>  
>  static void mixer_cfg_rgb_fmt(struct mixer_context *ctx, unsigned int height)
>  {
> -	struct mixer_resources *res = &ctx->mixer_res;
>  	u32 val;
>  
>  	switch (height) {
> @@ -412,45 +402,44 @@ static void mixer_cfg_rgb_fmt(struct mixer_context *ctx, unsigned int height)
>  	default:
>  		val = MXR_CFG_RGB709_16_235;
>  		/* Configure the BT.709 CSC matrix for full range RGB. */
> -		mixer_reg_write(res, MXR_CM_COEFF_Y,
> +		mixer_reg_write(ctx, MXR_CM_COEFF_Y,
>  			MXR_CSC_CT( 0.184,  0.614,  0.063) |
>  			MXR_CM_COEFF_RGB_FULL);
> -		mixer_reg_write(res, MXR_CM_COEFF_CB,
> +		mixer_reg_write(ctx, MXR_CM_COEFF_CB,
>  			MXR_CSC_CT(-0.102, -0.338,  0.440));
> -		mixer_reg_write(res, MXR_CM_COEFF_CR,
> +		mixer_reg_write(ctx, MXR_CM_COEFF_CR,
>  			MXR_CSC_CT( 0.440, -0.399, -0.040));
>  		break;
>  	}
>  
> -	mixer_reg_writemask(res, MXR_CFG, val, MXR_CFG_RGB_FMT_MASK);
> +	mixer_reg_writemask(ctx, MXR_CFG, val, MXR_CFG_RGB_FMT_MASK);
>  }
>  
>  static void mixer_cfg_layer(struct mixer_context *ctx, unsigned int win,
>  			    unsigned int priority, bool enable)
>  {
> -	struct mixer_resources *res = &ctx->mixer_res;
>  	u32 val = enable ? ~0 : 0;
>  
>  	switch (win) {
>  	case 0:
> -		mixer_reg_writemask(res, MXR_CFG, val, MXR_CFG_GRP0_ENABLE);
> -		mixer_reg_writemask(res, MXR_LAYER_CFG,
> +		mixer_reg_writemask(ctx, MXR_CFG, val, MXR_CFG_GRP0_ENABLE);
> +		mixer_reg_writemask(ctx, MXR_LAYER_CFG,
>  				    MXR_LAYER_CFG_GRP0_VAL(priority),
>  				    MXR_LAYER_CFG_GRP0_MASK);
>  		break;
>  	case 1:
> -		mixer_reg_writemask(res, MXR_CFG, val, MXR_CFG_GRP1_ENABLE);
> -		mixer_reg_writemask(res, MXR_LAYER_CFG,
> +		mixer_reg_writemask(ctx, MXR_CFG, val, MXR_CFG_GRP1_ENABLE);
> +		mixer_reg_writemask(ctx, MXR_LAYER_CFG,
>  				    MXR_LAYER_CFG_GRP1_VAL(priority),
>  				    MXR_LAYER_CFG_GRP1_MASK);
>  
>  		break;
>  	case VP_DEFAULT_WIN:
>  		if (test_bit(MXR_BIT_VP_ENABLED, &ctx->flags)) {
> -			vp_reg_writemask(res, VP_ENABLE, val, VP_ENABLE_ON);
> -			mixer_reg_writemask(res, MXR_CFG, val,
> +			vp_reg_writemask(ctx, VP_ENABLE, val, VP_ENABLE_ON);
> +			mixer_reg_writemask(ctx, MXR_CFG, val,
>  				MXR_CFG_VP_ENABLE);
> -			mixer_reg_writemask(res, MXR_LAYER_CFG,
> +			mixer_reg_writemask(ctx, MXR_LAYER_CFG,
>  					    MXR_LAYER_CFG_VP_VAL(priority),
>  					    MXR_LAYER_CFG_VP_MASK);
>  		}
> @@ -460,19 +449,16 @@ static void mixer_cfg_layer(struct mixer_context *ctx, unsigned int win,
>  
>  static void mixer_run(struct mixer_context *ctx)
>  {
> -	struct mixer_resources *res = &ctx->mixer_res;
> -
> -	mixer_reg_writemask(res, MXR_STATUS, ~0, MXR_STATUS_REG_RUN);
> +	mixer_reg_writemask(ctx, MXR_STATUS, ~0, MXR_STATUS_REG_RUN);
>  }
>  
>  static void mixer_stop(struct mixer_context *ctx)
>  {
> -	struct mixer_resources *res = &ctx->mixer_res;
>  	int timeout = 20;
>  
> -	mixer_reg_writemask(res, MXR_STATUS, 0, MXR_STATUS_REG_RUN);
> +	mixer_reg_writemask(ctx, MXR_STATUS, 0, MXR_STATUS_REG_RUN);
>  
> -	while (!(mixer_reg_read(res, MXR_STATUS) & MXR_STATUS_REG_IDLE) &&
> +	while (!(mixer_reg_read(ctx, MXR_STATUS) & MXR_STATUS_REG_IDLE) &&
>  			--timeout)
>  		usleep_range(10000, 12000);
>  }
> @@ -496,7 +482,6 @@ static void vp_video_buffer(struct mixer_context *ctx,
>  {
>  	struct exynos_drm_plane_state *state =
>  				to_exynos_plane_state(plane->base.state);
> -	struct mixer_resources *res = &ctx->mixer_res;
>  	struct drm_framebuffer *fb = state->base.fb;
>  	unsigned int priority = state->base.normalized_zpos + 1;
>  	unsigned long flags;
> @@ -523,55 +508,55 @@ static void vp_video_buffer(struct mixer_context *ctx,
>  		chroma_addr[1] = 0;
>  	}
>  
> -	spin_lock_irqsave(&res->reg_slock, flags);
> +	spin_lock_irqsave(&ctx->reg_slock, flags);
>  
>  	/* interlace or progressive scan mode */
>  	val = (test_bit(MXR_BIT_INTERLACE, &ctx->flags) ? ~0 : 0);
> -	vp_reg_writemask(res, VP_MODE, val, VP_MODE_LINE_SKIP);
> +	vp_reg_writemask(ctx, VP_MODE, val, VP_MODE_LINE_SKIP);
>  
>  	/* setup format */
>  	val = (is_nv21 ? VP_MODE_NV21 : VP_MODE_NV12);
>  	val |= (is_tiled ? VP_MODE_MEM_TILED : VP_MODE_MEM_LINEAR);
> -	vp_reg_writemask(res, VP_MODE, val, VP_MODE_FMT_MASK);
> +	vp_reg_writemask(ctx, VP_MODE, val, VP_MODE_FMT_MASK);
>  
>  	/* setting size of input image */
> -	vp_reg_write(res, VP_IMG_SIZE_Y, VP_IMG_HSIZE(fb->pitches[0]) |
> +	vp_reg_write(ctx, VP_IMG_SIZE_Y, VP_IMG_HSIZE(fb->pitches[0]) |
>  		VP_IMG_VSIZE(fb->height));
>  	/* chroma plane for NV12/NV21 is half the height of the luma plane */
> -	vp_reg_write(res, VP_IMG_SIZE_C, VP_IMG_HSIZE(fb->pitches[0]) |
> +	vp_reg_write(ctx, VP_IMG_SIZE_C, VP_IMG_HSIZE(fb->pitches[0]) |
>  		VP_IMG_VSIZE(fb->height / 2));
>  
> -	vp_reg_write(res, VP_SRC_WIDTH, state->src.w);
> -	vp_reg_write(res, VP_SRC_HEIGHT, state->src.h);
> -	vp_reg_write(res, VP_SRC_H_POSITION,
> +	vp_reg_write(ctx, VP_SRC_WIDTH, state->src.w);
> +	vp_reg_write(ctx, VP_SRC_HEIGHT, state->src.h);
> +	vp_reg_write(ctx, VP_SRC_H_POSITION,
>  			VP_SRC_H_POSITION_VAL(state->src.x));
> -	vp_reg_write(res, VP_SRC_V_POSITION, state->src.y);
> +	vp_reg_write(ctx, VP_SRC_V_POSITION, state->src.y);
>  
> -	vp_reg_write(res, VP_DST_WIDTH, state->crtc.w);
> -	vp_reg_write(res, VP_DST_H_POSITION, state->crtc.x);
> +	vp_reg_write(ctx, VP_DST_WIDTH, state->crtc.w);
> +	vp_reg_write(ctx, VP_DST_H_POSITION, state->crtc.x);
>  	if (test_bit(MXR_BIT_INTERLACE, &ctx->flags)) {
> -		vp_reg_write(res, VP_DST_HEIGHT, state->crtc.h / 2);
> -		vp_reg_write(res, VP_DST_V_POSITION, state->crtc.y / 2);
> +		vp_reg_write(ctx, VP_DST_HEIGHT, state->crtc.h / 2);
> +		vp_reg_write(ctx, VP_DST_V_POSITION, state->crtc.y / 2);
>  	} else {
> -		vp_reg_write(res, VP_DST_HEIGHT, state->crtc.h);
> -		vp_reg_write(res, VP_DST_V_POSITION, state->crtc.y);
> +		vp_reg_write(ctx, VP_DST_HEIGHT, state->crtc.h);
> +		vp_reg_write(ctx, VP_DST_V_POSITION, state->crtc.y);
>  	}
>  
> -	vp_reg_write(res, VP_H_RATIO, state->h_ratio);
> -	vp_reg_write(res, VP_V_RATIO, state->v_ratio);
> +	vp_reg_write(ctx, VP_H_RATIO, state->h_ratio);
> +	vp_reg_write(ctx, VP_V_RATIO, state->v_ratio);
>  
> -	vp_reg_write(res, VP_ENDIAN_MODE, VP_ENDIAN_MODE_LITTLE);
> +	vp_reg_write(ctx, VP_ENDIAN_MODE, VP_ENDIAN_MODE_LITTLE);
>  
>  	/* set buffer address to vp */
> -	vp_reg_write(res, VP_TOP_Y_PTR, luma_addr[0]);
> -	vp_reg_write(res, VP_BOT_Y_PTR, luma_addr[1]);
> -	vp_reg_write(res, VP_TOP_C_PTR, chroma_addr[0]);
> -	vp_reg_write(res, VP_BOT_C_PTR, chroma_addr[1]);
> +	vp_reg_write(ctx, VP_TOP_Y_PTR, luma_addr[0]);
> +	vp_reg_write(ctx, VP_BOT_Y_PTR, luma_addr[1]);
> +	vp_reg_write(ctx, VP_TOP_C_PTR, chroma_addr[0]);
> +	vp_reg_write(ctx, VP_BOT_C_PTR, chroma_addr[1]);
>  
>  	mixer_cfg_layer(ctx, plane->index, priority, true);
>  	mixer_cfg_vp_blend(ctx);
>  
> -	spin_unlock_irqrestore(&res->reg_slock, flags);
> +	spin_unlock_irqrestore(&ctx->reg_slock, flags);
>  
>  	mixer_regs_dump(ctx);
>  	vp_regs_dump(ctx);
> @@ -579,9 +564,7 @@ static void vp_video_buffer(struct mixer_context *ctx,
>  
>  static void mixer_layer_update(struct mixer_context *ctx)
>  {
> -	struct mixer_resources *res = &ctx->mixer_res;
> -
> -	mixer_reg_writemask(res, MXR_CFG, ~0, MXR_CFG_LAYER_UPDATE);
> +	mixer_reg_writemask(ctx, MXR_CFG, ~0, MXR_CFG_LAYER_UPDATE);
>  }
>  
>  static void mixer_graph_buffer(struct mixer_context *ctx,
> @@ -589,7 +572,6 @@ static void mixer_graph_buffer(struct mixer_context *ctx,
>  {
>  	struct exynos_drm_plane_state *state =
>  				to_exynos_plane_state(plane->base.state);
> -	struct mixer_resources *res = &ctx->mixer_res;
>  	struct drm_framebuffer *fb = state->base.fb;
>  	unsigned int priority = state->base.normalized_zpos + 1;
>  	unsigned long flags;
> @@ -634,29 +616,29 @@ static void mixer_graph_buffer(struct mixer_context *ctx,
>  		+ (state->src.x * fb->format->cpp[0])
>  		+ (state->src.y * fb->pitches[0]);
>  
> -	spin_lock_irqsave(&res->reg_slock, flags);
> +	spin_lock_irqsave(&ctx->reg_slock, flags);
>  
>  	/* setup format */
> -	mixer_reg_writemask(res, MXR_GRAPHIC_CFG(win),
> +	mixer_reg_writemask(ctx, MXR_GRAPHIC_CFG(win),
>  		MXR_GRP_CFG_FORMAT_VAL(fmt), MXR_GRP_CFG_FORMAT_MASK);
>  
>  	/* setup geometry */
> -	mixer_reg_write(res, MXR_GRAPHIC_SPAN(win),
> +	mixer_reg_write(ctx, MXR_GRAPHIC_SPAN(win),
>  			fb->pitches[0] / fb->format->cpp[0]);
>  
>  	val  = MXR_GRP_WH_WIDTH(state->src.w);
>  	val |= MXR_GRP_WH_HEIGHT(state->src.h);
>  	val |= MXR_GRP_WH_H_SCALE(x_ratio);
>  	val |= MXR_GRP_WH_V_SCALE(y_ratio);
> -	mixer_reg_write(res, MXR_GRAPHIC_WH(win), val);
> +	mixer_reg_write(ctx, MXR_GRAPHIC_WH(win), val);
>  
>  	/* setup offsets in display image */
>  	val  = MXR_GRP_DXY_DX(dst_x_offset);
>  	val |= MXR_GRP_DXY_DY(dst_y_offset);
> -	mixer_reg_write(res, MXR_GRAPHIC_DXY(win), val);
> +	mixer_reg_write(ctx, MXR_GRAPHIC_DXY(win), val);
>  
>  	/* set buffer address to mixer */
> -	mixer_reg_write(res, MXR_GRAPHIC_BASE(win), dma_addr);
> +	mixer_reg_write(ctx, MXR_GRAPHIC_BASE(win), dma_addr);
>  
>  	mixer_cfg_layer(ctx, win, priority, true);
>  	mixer_cfg_gfx_blend(ctx, win, is_alpha_format(fb->format->format));
> @@ -666,20 +648,19 @@ static void mixer_graph_buffer(struct mixer_context *ctx,
>  		ctx->mxr_ver == MXR_VER_128_0_0_184)
>  		mixer_layer_update(ctx);
>  
> -	spin_unlock_irqrestore(&res->reg_slock, flags);
> +	spin_unlock_irqrestore(&ctx->reg_slock, flags);
>  
>  	mixer_regs_dump(ctx);
>  }
>  
>  static void vp_win_reset(struct mixer_context *ctx)
>  {
> -	struct mixer_resources *res = &ctx->mixer_res;
>  	unsigned int tries = 100;
>  
> -	vp_reg_write(res, VP_SRESET, VP_SRESET_PROCESSING);
> +	vp_reg_write(ctx, VP_SRESET, VP_SRESET_PROCESSING);
>  	while (--tries) {
>  		/* waiting until VP_SRESET_PROCESSING is 0 */
> -		if (~vp_reg_read(res, VP_SRESET) & VP_SRESET_PROCESSING)
> +		if (~vp_reg_read(ctx, VP_SRESET) & VP_SRESET_PROCESSING)
>  			break;
>  		mdelay(10);
>  	}
> @@ -688,57 +669,55 @@ static void vp_win_reset(struct mixer_context *ctx)
>  
>  static void mixer_win_reset(struct mixer_context *ctx)
>  {
> -	struct mixer_resources *res = &ctx->mixer_res;
>  	unsigned long flags;
>  
> -	spin_lock_irqsave(&res->reg_slock, flags);
> +	spin_lock_irqsave(&ctx->reg_slock, flags);
>  
> -	mixer_reg_writemask(res, MXR_CFG, MXR_CFG_DST_HDMI, MXR_CFG_DST_MASK);
> +	mixer_reg_writemask(ctx, MXR_CFG, MXR_CFG_DST_HDMI, MXR_CFG_DST_MASK);
>  
>  	/* set output in RGB888 mode */
> -	mixer_reg_writemask(res, MXR_CFG, MXR_CFG_OUT_RGB888, MXR_CFG_OUT_MASK);
> +	mixer_reg_writemask(ctx, MXR_CFG, MXR_CFG_OUT_RGB888, MXR_CFG_OUT_MASK);
>  
>  	/* 16 beat burst in DMA */
> -	mixer_reg_writemask(res, MXR_STATUS, MXR_STATUS_16_BURST,
> +	mixer_reg_writemask(ctx, MXR_STATUS, MXR_STATUS_16_BURST,
>  		MXR_STATUS_BURST_MASK);
>  
>  	/* reset default layer priority */
> -	mixer_reg_write(res, MXR_LAYER_CFG, 0);
> +	mixer_reg_write(ctx, MXR_LAYER_CFG, 0);
>  
>  	/* set all background colors to RGB (0,0,0) */
> -	mixer_reg_write(res, MXR_BG_COLOR0, MXR_YCBCR_VAL(0, 128, 128));
> -	mixer_reg_write(res, MXR_BG_COLOR1, MXR_YCBCR_VAL(0, 128, 128));
> -	mixer_reg_write(res, MXR_BG_COLOR2, MXR_YCBCR_VAL(0, 128, 128));
> +	mixer_reg_write(ctx, MXR_BG_COLOR0, MXR_YCBCR_VAL(0, 128, 128));
> +	mixer_reg_write(ctx, MXR_BG_COLOR1, MXR_YCBCR_VAL(0, 128, 128));
> +	mixer_reg_write(ctx, MXR_BG_COLOR2, MXR_YCBCR_VAL(0, 128, 128));
>  
>  	if (test_bit(MXR_BIT_VP_ENABLED, &ctx->flags)) {
>  		/* configuration of Video Processor Registers */
>  		vp_win_reset(ctx);
> -		vp_default_filter(res);
> +		vp_default_filter(ctx);
>  	}
>  
>  	/* disable all layers */
> -	mixer_reg_writemask(res, MXR_CFG, 0, MXR_CFG_GRP0_ENABLE);
> -	mixer_reg_writemask(res, MXR_CFG, 0, MXR_CFG_GRP1_ENABLE);
> +	mixer_reg_writemask(ctx, MXR_CFG, 0, MXR_CFG_GRP0_ENABLE);
> +	mixer_reg_writemask(ctx, MXR_CFG, 0, MXR_CFG_GRP1_ENABLE);
>  	if (test_bit(MXR_BIT_VP_ENABLED, &ctx->flags))
> -		mixer_reg_writemask(res, MXR_CFG, 0, MXR_CFG_VP_ENABLE);
> +		mixer_reg_writemask(ctx, MXR_CFG, 0, MXR_CFG_VP_ENABLE);
>  
>  	/* set all source image offsets to zero */
> -	mixer_reg_write(res, MXR_GRAPHIC_SXY(0), 0);
> -	mixer_reg_write(res, MXR_GRAPHIC_SXY(1), 0);
> +	mixer_reg_write(ctx, MXR_GRAPHIC_SXY(0), 0);
> +	mixer_reg_write(ctx, MXR_GRAPHIC_SXY(1), 0);
>  
> -	spin_unlock_irqrestore(&res->reg_slock, flags);
> +	spin_unlock_irqrestore(&ctx->reg_slock, flags);
>  }
>  
>  static irqreturn_t mixer_irq_handler(int irq, void *arg)
>  {
>  	struct mixer_context *ctx = arg;
> -	struct mixer_resources *res = &ctx->mixer_res;
>  	u32 val, base, shadow;
>  
> -	spin_lock(&res->reg_slock);
> +	spin_lock(&ctx->reg_slock);
>  
>  	/* read interrupt status for handling and clearing flags for VSYNC */
> -	val = mixer_reg_read(res, MXR_INT_STATUS);
> +	val = mixer_reg_read(ctx, MXR_INT_STATUS);
>  
>  	/* handling VSYNC */
>  	if (val & MXR_INT_STATUS_VSYNC) {
> @@ -748,13 +727,13 @@ static irqreturn_t mixer_irq_handler(int irq, void *arg)
>  
>  		/* interlace scan need to check shadow register */
>  		if (test_bit(MXR_BIT_INTERLACE, &ctx->flags)) {
> -			base = mixer_reg_read(res, MXR_GRAPHIC_BASE(0));
> -			shadow = mixer_reg_read(res, MXR_GRAPHIC_BASE_S(0));
> +			base = mixer_reg_read(ctx, MXR_GRAPHIC_BASE(0));
> +			shadow = mixer_reg_read(ctx, MXR_GRAPHIC_BASE_S(0));
>  			if (base != shadow)
>  				goto out;
>  
> -			base = mixer_reg_read(res, MXR_GRAPHIC_BASE(1));
> -			shadow = mixer_reg_read(res, MXR_GRAPHIC_BASE_S(1));
> +			base = mixer_reg_read(ctx, MXR_GRAPHIC_BASE(1));
> +			shadow = mixer_reg_read(ctx, MXR_GRAPHIC_BASE_S(1));
>  			if (base != shadow)
>  				goto out;
>  		}
> @@ -764,9 +743,9 @@ static irqreturn_t mixer_irq_handler(int irq, void *arg)
>  
>  out:
>  	/* clear interrupts */
> -	mixer_reg_write(res, MXR_INT_STATUS, val);
> +	mixer_reg_write(ctx, MXR_INT_STATUS, val);
>  
> -	spin_unlock(&res->reg_slock);
> +	spin_unlock(&ctx->reg_slock);
>  
>  	return IRQ_HANDLED;
>  }
> @@ -774,26 +753,25 @@ static irqreturn_t mixer_irq_handler(int irq, void *arg)
>  static int mixer_resources_init(struct mixer_context *mixer_ctx)
>  {
>  	struct device *dev = &mixer_ctx->pdev->dev;
> -	struct mixer_resources *mixer_res = &mixer_ctx->mixer_res;
>  	struct resource *res;
>  	int ret;
>  
> -	spin_lock_init(&mixer_res->reg_slock);
> +	spin_lock_init(&mixer_ctx->reg_slock);
>  
> -	mixer_res->mixer = devm_clk_get(dev, "mixer");
> -	if (IS_ERR(mixer_res->mixer)) {
> +	mixer_ctx->mixer = devm_clk_get(dev, "mixer");
> +	if (IS_ERR(mixer_ctx->mixer)) {
>  		dev_err(dev, "failed to get clock 'mixer'\n");
>  		return -ENODEV;
>  	}
>  
> -	mixer_res->hdmi = devm_clk_get(dev, "hdmi");
> -	if (IS_ERR(mixer_res->hdmi)) {
> +	mixer_ctx->hdmi = devm_clk_get(dev, "hdmi");
> +	if (IS_ERR(mixer_ctx->hdmi)) {
>  		dev_err(dev, "failed to get clock 'hdmi'\n");
> -		return PTR_ERR(mixer_res->hdmi);
> +		return PTR_ERR(mixer_ctx->hdmi);
>  	}
>  
> -	mixer_res->sclk_hdmi = devm_clk_get(dev, "sclk_hdmi");
> -	if (IS_ERR(mixer_res->sclk_hdmi)) {
> +	mixer_ctx->sclk_hdmi = devm_clk_get(dev, "sclk_hdmi");
> +	if (IS_ERR(mixer_ctx->sclk_hdmi)) {
>  		dev_err(dev, "failed to get clock 'sclk_hdmi'\n");
>  		return -ENODEV;
>  	}
> @@ -803,9 +781,9 @@ static int mixer_resources_init(struct mixer_context *mixer_ctx)
>  		return -ENXIO;
>  	}
>  
> -	mixer_res->mixer_regs = devm_ioremap(dev, res->start,
> +	mixer_ctx->mixer_regs = devm_ioremap(dev, res->start,
>  							resource_size(res));
> -	if (mixer_res->mixer_regs == NULL) {
> +	if (mixer_ctx->mixer_regs == NULL) {
>  		dev_err(dev, "register mapping failed.\n");
>  		return -ENXIO;
>  	}
> @@ -822,7 +800,7 @@ static int mixer_resources_init(struct mixer_context *mixer_ctx)
>  		dev_err(dev, "request interrupt failed.\n");
>  		return ret;
>  	}
> -	mixer_res->irq = res->start;
> +	mixer_ctx->irq = res->start;
>  
>  	return 0;
>  }
> @@ -830,30 +808,29 @@ static int mixer_resources_init(struct mixer_context *mixer_ctx)
>  static int vp_resources_init(struct mixer_context *mixer_ctx)
>  {
>  	struct device *dev = &mixer_ctx->pdev->dev;
> -	struct mixer_resources *mixer_res = &mixer_ctx->mixer_res;
>  	struct resource *res;
>  
> -	mixer_res->vp = devm_clk_get(dev, "vp");
> -	if (IS_ERR(mixer_res->vp)) {
> +	mixer_ctx->vp = devm_clk_get(dev, "vp");
> +	if (IS_ERR(mixer_ctx->vp)) {
>  		dev_err(dev, "failed to get clock 'vp'\n");
>  		return -ENODEV;
>  	}
>  
>  	if (test_bit(MXR_BIT_HAS_SCLK, &mixer_ctx->flags)) {
> -		mixer_res->sclk_mixer = devm_clk_get(dev, "sclk_mixer");
> -		if (IS_ERR(mixer_res->sclk_mixer)) {
> +		mixer_ctx->sclk_mixer = devm_clk_get(dev, "sclk_mixer");
> +		if (IS_ERR(mixer_ctx->sclk_mixer)) {
>  			dev_err(dev, "failed to get clock 'sclk_mixer'\n");
>  			return -ENODEV;
>  		}
> -		mixer_res->mout_mixer = devm_clk_get(dev, "mout_mixer");
> -		if (IS_ERR(mixer_res->mout_mixer)) {
> +		mixer_ctx->mout_mixer = devm_clk_get(dev, "mout_mixer");
> +		if (IS_ERR(mixer_ctx->mout_mixer)) {
>  			dev_err(dev, "failed to get clock 'mout_mixer'\n");
>  			return -ENODEV;
>  		}
>  
> -		if (mixer_res->sclk_hdmi && mixer_res->mout_mixer)
> -			clk_set_parent(mixer_res->mout_mixer,
> -				       mixer_res->sclk_hdmi);
> +		if (mixer_ctx->sclk_hdmi && mixer_ctx->mout_mixer)
> +			clk_set_parent(mixer_ctx->mout_mixer,
> +				       mixer_ctx->sclk_hdmi);
>  	}
>  
>  	res = platform_get_resource(mixer_ctx->pdev, IORESOURCE_MEM, 1);
> @@ -862,9 +839,9 @@ static int vp_resources_init(struct mixer_context *mixer_ctx)
>  		return -ENXIO;
>  	}
>  
> -	mixer_res->vp_regs = devm_ioremap(dev, res->start,
> +	mixer_ctx->vp_regs = devm_ioremap(dev, res->start,
>  							resource_size(res));
> -	if (mixer_res->vp_regs == NULL) {
> +	if (mixer_ctx->vp_regs == NULL) {
>  		dev_err(dev, "register mapping failed.\n");
>  		return -ENXIO;
>  	}
> @@ -908,15 +885,14 @@ static void mixer_ctx_remove(struct mixer_context *mixer_ctx)
>  static int mixer_enable_vblank(struct exynos_drm_crtc *crtc)
>  {
>  	struct mixer_context *mixer_ctx = crtc->ctx;
> -	struct mixer_resources *res = &mixer_ctx->mixer_res;
>  
>  	__set_bit(MXR_BIT_VSYNC, &mixer_ctx->flags);
>  	if (!test_bit(MXR_BIT_POWERED, &mixer_ctx->flags))
>  		return 0;
>  
>  	/* enable vsync interrupt */
> -	mixer_reg_writemask(res, MXR_INT_STATUS, ~0, MXR_INT_CLEAR_VSYNC);
> -	mixer_reg_writemask(res, MXR_INT_EN, ~0, MXR_INT_EN_VSYNC);
> +	mixer_reg_writemask(mixer_ctx, MXR_INT_STATUS, ~0, MXR_INT_CLEAR_VSYNC);
> +	mixer_reg_writemask(mixer_ctx, MXR_INT_EN, ~0, MXR_INT_EN_VSYNC);
>  
>  	return 0;
>  }
> @@ -924,7 +900,6 @@ static int mixer_enable_vblank(struct exynos_drm_crtc *crtc)
>  static void mixer_disable_vblank(struct exynos_drm_crtc *crtc)
>  {
>  	struct mixer_context *mixer_ctx = crtc->ctx;
> -	struct mixer_resources *res = &mixer_ctx->mixer_res;
>  
>  	__clear_bit(MXR_BIT_VSYNC, &mixer_ctx->flags);
>  
> @@ -932,8 +907,8 @@ static void mixer_disable_vblank(struct exynos_drm_crtc *crtc)
>  		return;
>  
>  	/* disable vsync interrupt */
> -	mixer_reg_writemask(res, MXR_INT_STATUS, ~0, MXR_INT_CLEAR_VSYNC);
> -	mixer_reg_writemask(res, MXR_INT_EN, 0, MXR_INT_EN_VSYNC);
> +	mixer_reg_writemask(mixer_ctx, MXR_INT_STATUS, ~0, MXR_INT_CLEAR_VSYNC);
> +	mixer_reg_writemask(mixer_ctx, MXR_INT_EN, 0, MXR_INT_EN_VSYNC);
>  }
>  
>  static void mixer_atomic_begin(struct exynos_drm_crtc *crtc)
> @@ -966,7 +941,6 @@ static void mixer_disable_plane(struct exynos_drm_crtc *crtc,
>  				struct exynos_drm_plane *plane)
>  {
>  	struct mixer_context *mixer_ctx = crtc->ctx;
> -	struct mixer_resources *res = &mixer_ctx->mixer_res;
>  	unsigned long flags;
>  
>  	DRM_DEBUG_KMS("win: %d\n", plane->index);
> @@ -974,9 +948,9 @@ static void mixer_disable_plane(struct exynos_drm_crtc *crtc,
>  	if (!test_bit(MXR_BIT_POWERED, &mixer_ctx->flags))
>  		return;
>  
> -	spin_lock_irqsave(&res->reg_slock, flags);
> +	spin_lock_irqsave(&mixer_ctx->reg_slock, flags);
>  	mixer_cfg_layer(mixer_ctx, plane->index, 0, false);
> -	spin_unlock_irqrestore(&res->reg_slock, flags);
> +	spin_unlock_irqrestore(&mixer_ctx->reg_slock, flags);
>  }
>  
>  static void mixer_atomic_flush(struct exynos_drm_crtc *crtc)
> @@ -993,7 +967,6 @@ static void mixer_atomic_flush(struct exynos_drm_crtc *crtc)
>  static void mixer_enable(struct exynos_drm_crtc *crtc)
>  {
>  	struct mixer_context *ctx = crtc->ctx;
> -	struct mixer_resources *res = &ctx->mixer_res;
>  
>  	if (test_bit(MXR_BIT_POWERED, &ctx->flags))
>  		return;
> @@ -1004,11 +977,11 @@ static void mixer_enable(struct exynos_drm_crtc *crtc)
>  
>  	mixer_vsync_set_update(ctx, false);
>  
> -	mixer_reg_writemask(res, MXR_STATUS, ~0, MXR_STATUS_SOFT_RESET);
> +	mixer_reg_writemask(ctx, MXR_STATUS, ~0, MXR_STATUS_SOFT_RESET);
>  
>  	if (test_bit(MXR_BIT_VSYNC, &ctx->flags)) {
> -		mixer_reg_writemask(res, MXR_INT_STATUS, ~0, MXR_INT_CLEAR_VSYNC);
> -		mixer_reg_writemask(res, MXR_INT_EN, ~0, MXR_INT_EN_VSYNC);
> +		mixer_reg_writemask(ctx, MXR_INT_STATUS, ~0, MXR_INT_CLEAR_VSYNC);

WARNING: line over 80 characters
#851: FILE: drivers/gpu/drm/exynos/exynos_mixer.c:983:
+		mixer_reg_writemask(ctx, MXR_INT_STATUS, ~0, MXR_INT_CLEAR_VSYNC);

I will fix it.

Thanks,
Inki Dae
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