[linux-2.6-block.git] / drivers / gpu / drm / arm / display / komeda / komeda_format_caps.h

/* SPDX-License-Identifier: GPL-2.0 */
/*
 * (C) COPYRIGHT 2018 ARM Limited. All rights reserved.
 * Author: James.Qian.Wang <james.qian.wang@arm.com>
 *
 */

#ifndef _KOMEDA_FORMAT_CAPS_H_
#define _KOMEDA_FORMAT_CAPS_H_

#include <linux/types.h>
#include <uapi/drm/drm_fourcc.h>
#include <drm/drm_fourcc.h>

#define AFBC(x)		DRM_FORMAT_MOD_ARM_AFBC(x)

/* afbc layerout */
#define AFBC_16x16(x)	AFBC(AFBC_FORMAT_MOD_BLOCK_SIZE_16x16 | (x))
#define AFBC_32x8(x)	AFBC(AFBC_FORMAT_MOD_BLOCK_SIZE_32x8 | (x))

/* afbc features */
#define _YTR		AFBC_FORMAT_MOD_YTR
#define _SPLIT		AFBC_FORMAT_MOD_SPLIT
#define _SPARSE		AFBC_FORMAT_MOD_SPARSE
#define _CBR		AFBC_FORMAT_MOD_CBR
#define _TILED		AFBC_FORMAT_MOD_TILED
#define _SC		AFBC_FORMAT_MOD_SC

/* layer_type */
#define KOMEDA_FMT_RICH_LAYER		BIT(0)
#define KOMEDA_FMT_SIMPLE_LAYER		BIT(1)
#define KOMEDA_FMT_WB_LAYER		BIT(2)

#define AFBC_TH_LAYOUT_ALIGNMENT	8
#define AFBC_HEADER_SIZE		16
#define AFBC_SUPERBLK_ALIGNMENT		128
#define AFBC_SUPERBLK_PIXELS		256
#define AFBC_BODY_START_ALIGNMENT	1024
#define AFBC_TH_BODY_START_ALIGNMENT	4096

/**
 * struct komeda_format_caps
 *
 * komeda_format_caps is for describing ARM display specific features and
 * limitations for a specific format, and format_caps will be linked into
 * &komeda_framebuffer like a extension of &drm_format_info.
 *
 * NOTE: one fourcc may has two different format_caps items for fourcc and
 * fourcc+modifier
 *
 * @hw_id: hw format id, hw specific value.
 * @fourcc: drm fourcc format.
 * @supported_layer_types: indicate which layer supports this format
 * @supported_rots: allowed rotations for this format
 * @supported_afbc_layouts: supported afbc layerout
 * @supported_afbc_features: supported afbc features
 */
struct komeda_format_caps {
	u32 hw_id;
	u32 fourcc;
	u32 supported_layer_types;
	u32 supported_rots;
	u32 supported_afbc_layouts;
	u64 supported_afbc_features;
};

/**
 * struct komeda_format_caps_table - format_caps mananger
 *
 * @n_formats: the size of format_caps list.
 * @format_caps: format_caps list.
 * @format_mod_supported: Optional. Some HW may have special requirements or
 * limitations which can not be described by format_caps, this func supply HW
 * the ability to do the further HW specific check.
 */
struct komeda_format_caps_table {
	u32 n_formats;
	const struct komeda_format_caps *format_caps;
	bool (*format_mod_supported)(const struct komeda_format_caps *caps,
				     u32 layer_type, u64 modifier, u32 rot);
};

extern u64 komeda_supported_modifiers[];

static inline const char *komeda_get_format_name(u32 fourcc, u64 modifier)
{
	struct drm_format_name_buf buf;
	static char name[64];

	snprintf(name, sizeof(name), "%s with modifier: 0x%llx.",
		 drm_get_format_name(fourcc, &buf), modifier);

	return name;
}

const struct komeda_format_caps *
komeda_get_format_caps(struct komeda_format_caps_table *table,
		       u32 fourcc, u64 modifier);

u32 komeda_get_afbc_format_bpp(const struct drm_format_info *info,
			       u64 modifier);

u32 *komeda_get_layer_fourcc_list(struct komeda_format_caps_table *table,
				  u32 layer_type, u32 *n_fmts);

void komeda_put_fourcc_list(u32 *fourcc_list);

bool komeda_format_mod_supported(struct komeda_format_caps_table *table,
				 u32 layer_type, u32 fourcc, u64 modifier,
				 u32 rot);

#endif
Commit	Line	Data
981d29d2 ATC	1	/* SPDX-License-Identifier: GPL-2.0 */
	2	/*
	3	* (C) COPYRIGHT 2018 ARM Limited. All rights reserved.
	4	* Author: James.Qian.Wang <james.qian.wang@arm.com>
	5	*
	6	*/
	7
	8	#ifndef _KOMEDA_FORMAT_CAPS_H_
	9	#define _KOMEDA_FORMAT_CAPS_H_
	10
	11	#include <linux/types.h>
	12	#include <uapi/drm/drm_fourcc.h>
	13	#include <drm/drm_fourcc.h>
	14
	15	#define AFBC(x) DRM_FORMAT_MOD_ARM_AFBC(x)
	16
	17	/* afbc layerout */
	18	#define AFBC_16x16(x) AFBC(AFBC_FORMAT_MOD_BLOCK_SIZE_16x16 \| (x))
	19	#define AFBC_32x8(x) AFBC(AFBC_FORMAT_MOD_BLOCK_SIZE_32x8 \| (x))
	20
	21	/* afbc features */
	22	#define _YTR AFBC_FORMAT_MOD_YTR
	23	#define _SPLIT AFBC_FORMAT_MOD_SPLIT
	24	#define _SPARSE AFBC_FORMAT_MOD_SPARSE
	25	#define _CBR AFBC_FORMAT_MOD_CBR
	26	#define _TILED AFBC_FORMAT_MOD_TILED
	27	#define _SC AFBC_FORMAT_MOD_SC
	28
	29	/* layer_type */
	30	#define KOMEDA_FMT_RICH_LAYER BIT(0)
	31	#define KOMEDA_FMT_SIMPLE_LAYER BIT(1)
	32	#define KOMEDA_FMT_WB_LAYER BIT(2)
	33
	34	#define AFBC_TH_LAYOUT_ALIGNMENT 8
	35	#define AFBC_HEADER_SIZE 16
	36	#define AFBC_SUPERBLK_ALIGNMENT 128
	37	#define AFBC_SUPERBLK_PIXELS 256
	38	#define AFBC_BODY_START_ALIGNMENT 1024
	39	#define AFBC_TH_BODY_START_ALIGNMENT 4096
	40
	41	/**
	42	* struct komeda_format_caps
	43	*
	44	* komeda_format_caps is for describing ARM display specific features and
	45	* limitations for a specific format, and format_caps will be linked into
	46	* &komeda_framebuffer like a extension of &drm_format_info.
	47	*
	48	* NOTE: one fourcc may has two different format_caps items for fourcc and
	49	* fourcc+modifier
	50	*
	51	* @hw_id: hw format id, hw specific value.
	52	* @fourcc: drm fourcc format.
981d29d2 ATC	53	* @supported_layer_types: indicate which layer supports this format
	54	* @supported_rots: allowed rotations for this format
	55	* @supported_afbc_layouts: supported afbc layerout
	56	* @supported_afbc_features: supported afbc features
	57	*/
	58	struct komeda_format_caps {
	59	u32 hw_id;
	60	u32 fourcc;
981d29d2 ATC	61	u32 supported_layer_types;
	62	u32 supported_rots;
	63	u32 supported_afbc_layouts;
	64	u64 supported_afbc_features;
	65	};
	66
	67	/**
	68	* struct komeda_format_caps_table - format_caps mananger
	69	*
	70	* @n_formats: the size of format_caps list.
	71	* @format_caps: format_caps list.
19358630 LLATC	72	* @format_mod_supported: Optional. Some HW may have special requirements or
	73	* limitations which can not be described by format_caps, this func supply HW
	74	* the ability to do the further HW specific check.
981d29d2 ATC	75	*/
	76	struct komeda_format_caps_table {
	77	u32 n_formats;
	78	const struct komeda_format_caps *format_caps;
19358630 LLATC	79	bool (format_mod_supported)(const struct komeda_format_caps caps,
19358630 LLATC	80	u32 layer_type, u64 modifier, u32 rot);
981d29d2 ATC	81	};
981d29d2 ATC	82
65ad2392 ATC	83	extern u64 komeda_supported_modifiers[];
65ad2392 ATC	84
429bfabe LLATC	85	static inline const char *komeda_get_format_name(u32 fourcc, u64 modifier)
	86	{
	87	struct drm_format_name_buf buf;
	88	static char name[64];
	89
	90	snprintf(name, sizeof(name), "%s with modifier: 0x%llx.",
	91	drm_get_format_name(fourcc, &buf), modifier);
	92
	93	return name;
	94	}
	95
981d29d2 ATC	96	const struct komeda_format_caps *
	97	komeda_get_format_caps(struct komeda_format_caps_table *table,
	98	u32 fourcc, u64 modifier);
	99
a9577f19 LLATC	100	u32 komeda_get_afbc_format_bpp(const struct drm_format_info *info,
	101	u64 modifier);
	102
981d29d2 ATC	103	u32 komeda_get_layer_fourcc_list(struct komeda_format_caps_table table,
	104	u32 layer_type, u32 *n_fmts);
	105
	106	void komeda_put_fourcc_list(u32 *fourcc_list);
	107
65ad2392	108	bool komeda_format_mod_supported(struct komeda_format_caps_table *table,
19358630 LLATC	109	u32 layer_type, u32 fourcc, u64 modifier,
19358630 LLATC	110	u32 rot);
65ad2392	111
981d29d2	112	#endif