Re: [PATCH 2/4] drm/exynos: add support for exynos5420 mixer

[김승우 <sw0312.kim@samsung.com>]

Hi Rahul,

Code part looks good to me but IMHO, binding document for exynos_mixer
is also fixed like following because compitable string
samsung,exynos5420-mixer is added with this patch.

 Required properties:
 - compatible: value should be:
 	1) "samsung,exynos4210-mixer"
 	2) "samsung,exynos5250-mixer"
+	3) "samsung,exynos5420-mixer"

Thanks and Regards,
- Seung-Woo Kim

On 2013년 06월 18일 21:49, Rahul Sharma wrote:
> Add support for exynos5420 mixer IP in the drm mixer driver.
> 
> Signed-off-by: Rahul Sharma <rahul.sharma@samsung.com>
> ---
>  drivers/gpu/drm/exynos/exynos_mixer.c |   49 +++++++++++++++++++++++++--------
>  drivers/gpu/drm/exynos/regs-mixer.h   |    7 +++++
>  2 files changed, 44 insertions(+), 12 deletions(-)
> 
> diff --git a/drivers/gpu/drm/exynos/exynos_mixer.c b/drivers/gpu/drm/exynos/exynos_mixer.c
> index 2fe6d33..d51ff36 100644
> --- a/drivers/gpu/drm/exynos/exynos_mixer.c
> +++ b/drivers/gpu/drm/exynos/exynos_mixer.c
> @@ -78,6 +78,7 @@ struct mixer_resources {
>  enum mixer_version_id {
>  	MXR_VER_0_0_0_16,
>  	MXR_VER_16_0_33_0,
> +	MXR_VER_128_0_0_184,
>  };
>  
>  struct mixer_context {
> @@ -283,17 +284,19 @@ static void mixer_cfg_scan(struct mixer_context *ctx, unsigned int height)
>  	val = (ctx->interlace ? MXR_CFG_SCAN_INTERLACE :
>  				MXR_CFG_SCAN_PROGRASSIVE);
>  
> -	/* choosing between porper HD and SD mode */
> -	if (height <= 480)
> -		val |= MXR_CFG_SCAN_NTSC | MXR_CFG_SCAN_SD;
> -	else if (height <= 576)
> -		val |= MXR_CFG_SCAN_PAL | MXR_CFG_SCAN_SD;
> -	else if (height <= 720)
> -		val |= MXR_CFG_SCAN_HD_720 | MXR_CFG_SCAN_HD;
> -	else if (height <= 1080)
> -		val |= MXR_CFG_SCAN_HD_1080 | MXR_CFG_SCAN_HD;
> -	else
> -		val |= MXR_CFG_SCAN_HD_720 | MXR_CFG_SCAN_HD;
> +	if (ctx->mxr_ver != MXR_VER_128_0_0_184) {
> +		/* choosing between proper HD and SD mode */
> +		if (height <= 480)
> +			val |= MXR_CFG_SCAN_NTSC | MXR_CFG_SCAN_SD;
> +		else if (height <= 576)
> +			val |= MXR_CFG_SCAN_PAL | MXR_CFG_SCAN_SD;
> +		else if (height <= 720)
> +			val |= MXR_CFG_SCAN_HD_720 | MXR_CFG_SCAN_HD;
> +		else if (height <= 1080)
> +			val |= MXR_CFG_SCAN_HD_1080 | MXR_CFG_SCAN_HD;
> +		else
> +			val |= MXR_CFG_SCAN_HD_720 | MXR_CFG_SCAN_HD;
> +	}
>  
>  	mixer_reg_writemask(res, MXR_CFG, val, MXR_CFG_SCAN_MASK);
>  }
> @@ -557,6 +560,14 @@ static void mixer_graph_buffer(struct mixer_context *ctx, int win)
>  	/* setup geometry */
>  	mixer_reg_write(res, MXR_GRAPHIC_SPAN(win), win_data->fb_width);
>  
> +	/* setup display size */
> +	if (ctx->mxr_ver == MXR_VER_128_0_0_184 &&
> +		win == MIXER_DEFAULT_WIN) {
> +		val  = MXR_MXR_RES_HEIGHT(win_data->fb_height);
> +		val |= MXR_MXR_RES_WIDTH(win_data->fb_width);
> +		mixer_reg_write(res, MXR_RESOLUTION, val);
> +	}
> +
>  	val  = MXR_GRP_WH_WIDTH(win_data->crtc_width);
>  	val |= MXR_GRP_WH_HEIGHT(win_data->crtc_height);
>  	val |= MXR_GRP_WH_H_SCALE(x_ratio);
> @@ -581,7 +592,8 @@ static void mixer_graph_buffer(struct mixer_context *ctx, int win)
>  	mixer_cfg_layer(ctx, win, true);
>  
>  	/* layer update mandatory for mixer 16.0.33.0 */
> -	if (ctx->mxr_ver == MXR_VER_16_0_33_0)
> +	if (ctx->mxr_ver == MXR_VER_16_0_33_0 ||
> +		ctx->mxr_ver == MXR_VER_128_0_0_184)
>  		mixer_layer_update(ctx);
>  
>  	mixer_run(ctx);
> @@ -816,6 +828,7 @@ static void mixer_win_disable(void *ctx, int win)
>  
>  static int mixer_check_mode(void *ctx, struct drm_display_mode *mode)
>  {
> +	struct mixer_context *mixer_ctx = ctx;
>  	u32 w, h;
>  
>  	w = mode->hdisplay;
> @@ -825,6 +838,10 @@ static int mixer_check_mode(void *ctx, struct drm_display_mode *mode)
>  		mode->hdisplay, mode->vdisplay, mode->vrefresh,
>  		(mode->flags & DRM_MODE_FLAG_INTERLACE) ? 1 : 0);
>  
> +	if (mixer_ctx->mxr_ver == MXR_VER_0_0_0_16 ||
> +		mixer_ctx->mxr_ver == MXR_VER_128_0_0_184)
> +		return 0;
> +
>  	if ((w >= 464 && w <= 720 && h >= 261 && h <= 576) ||
>  		(w >= 1024 && w <= 1280 && h >= 576 && h <= 720) ||
>  		(w >= 1664 && w <= 1920 && h >= 936 && h <= 1080))
> @@ -1115,6 +1132,11 @@ static int vp_resources_init(struct exynos_drm_hdmi_context *ctx,
>  	return 0;
>  }
>  
> +static struct mixer_drv_data exynos5420_mxr_drv_data = {
> +	.version = MXR_VER_128_0_0_184,
> +	.is_vp_enabled = 0,
> +};
> +
>  static struct mixer_drv_data exynos5250_mxr_drv_data = {
>  	.version = MXR_VER_16_0_33_0,
>  	.is_vp_enabled = 0,
> @@ -1139,6 +1161,9 @@ static struct platform_device_id mixer_driver_types[] = {
>  
>  static struct of_device_id mixer_match_types[] = {
>  	{
> +		.compatible = "samsung,exynos5420-mixer",
> +		.data	= &exynos5420_mxr_drv_data,
> +	}, {
>  		.compatible = "samsung,exynos5250-mixer",
>  		.data	= &exynos5250_mxr_drv_data,
>  	}, {
> diff --git a/drivers/gpu/drm/exynos/regs-mixer.h b/drivers/gpu/drm/exynos/regs-mixer.h
> index 5d8dbc0..4537026 100644
> --- a/drivers/gpu/drm/exynos/regs-mixer.h
> +++ b/drivers/gpu/drm/exynos/regs-mixer.h
> @@ -44,6 +44,9 @@
>  #define MXR_CM_COEFF_Y			0x0080
>  #define MXR_CM_COEFF_CB			0x0084
>  #define MXR_CM_COEFF_CR			0x0088
> +#define MXR_MO				0x0304
> +#define MXR_RESOLUTION			0x0310
> +
>  #define MXR_GRAPHIC0_BASE_S		0x2024
>  #define MXR_GRAPHIC1_BASE_S		0x2044
>  
> @@ -119,6 +122,10 @@
>  #define MXR_GRP_WH_WIDTH(x)		MXR_MASK_VAL(x, 26, 16)
>  #define MXR_GRP_WH_HEIGHT(x)		MXR_MASK_VAL(x, 10, 0)
>  
> +/* bits for MXR_RESOLUTION */
> +#define MXR_MXR_RES_HEIGHT(x)		MXR_MASK_VAL(x, 26, 16)
> +#define MXR_MXR_RES_WIDTH(x)		MXR_MASK_VAL(x, 10, 0)
> +
>  /* bits for MXR_GRAPHICn_SXY */
>  #define MXR_GRP_SXY_SX(x)		MXR_MASK_VAL(x, 26, 16)
>  #define MXR_GRP_SXY_SY(x)		MXR_MASK_VAL(x, 10, 0)
> 

-- 
Seung-Woo Kim
Samsung Software R&D Center
--