drivers/gpu/drm/msm/sde/sde_kms.h - kernel/msm-4.9 - Gitiles

 /*
  * Copyright (c) 2015-2017, The Linux Foundation. All rights reserved.
  * Copyright (C) 2013 Red Hat
  * Author: Rob Clark <robdclark@gmail.com>
  *
  * This program is free software; you can redistribute it and/or modify it
  * under the terms of the GNU General Public License version 2 as published by
  * the Free Software Foundation.
  *
  * This program is distributed in the hope that it will be useful, but WITHOUT
  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  * more details.
  *
  * You should have received a copy of the GNU General Public License along with
  * this program.  If not, see <http://www.gnu.org/licenses/>.
  */

 #ifndef __SDE_KMS_H__
 #define __SDE_KMS_H__

 #include "msm_drv.h"
 #include "msm_kms.h"
 #include "msm_mmu.h"
 #include "sde_dbg.h"
 #include "sde_hw_catalog.h"
 #include "sde_hw_ctl.h"
 #include "sde_hw_lm.h"
 #include "sde_hw_interrupts.h"
 #include "sde_hw_wb.h"
 #include "sde_hw_top.h"
 #include "sde_rm.h"
 #include "sde_power_handle.h"
 #include "sde_irq.h"

 #define DRMID(x) ((x) ? (x)->base.id : -1)

 /**
  * SDE_DEBUG - macro for kms/plane/crtc/encoder/connector logs
  * @fmt: Pointer to format string
  */
 #define SDE_DEBUG(fmt, ...)                                                \
 	do {                                                               \
 		if (unlikely(drm_debug & DRM_UT_KMS))                      \
 			DRM_DEBUG(fmt, ##__VA_ARGS__); \
 		else                                                       \
 			pr_debug(fmt, ##__VA_ARGS__);                      \
 	} while (0)

 /**
  * SDE_DEBUG_DRIVER - macro for hardware driver logging
  * @fmt: Pointer to format string
  */
 #define SDE_DEBUG_DRIVER(fmt, ...)                                         \
 	do {                                                               \
 		if (unlikely(drm_debug & DRM_UT_DRIVER))                   \
 			DRM_ERROR(fmt, ##__VA_ARGS__); \
 		else                                                       \
 			pr_debug(fmt, ##__VA_ARGS__);                      \
 	} while (0)

 #define SDE_ERROR(fmt, ...) pr_err("[sde error]" fmt, ##__VA_ARGS__)

 #define POPULATE_RECT(rect, a, b, c, d, Q16_flag) \
 	do {						\
 		(rect)->x = (Q16_flag) ? (a) >> 16 : (a);    \
 		(rect)->y = (Q16_flag) ? (b) >> 16 : (b);    \
 		(rect)->w = (Q16_flag) ? (c) >> 16 : (c);    \
 		(rect)->h = (Q16_flag) ? (d) >> 16 : (d);    \
 	} while (0)

 #define CHECK_LAYER_BOUNDS(offset, size, max_size) \
 	(((size) > (max_size)) || ((offset) > ((max_size) - (size))))

 /**
  * ktime_compare_safe - compare two ktime structures
  *	This macro is similar to the standard ktime_compare() function, but
  *	attempts to also handle ktime overflows.
  * @A: First ktime value
  * @B: Second ktime value
  * Returns: -1 if A < B, 0 if A == B, 1 if A > B
  */
 #define ktime_compare_safe(A, B) \
 	ktime_compare(ktime_sub((A), (B)), ktime_set(0, 0))

 #define SDE_NAME_SIZE  12

 /*
  * struct sde_irq_callback - IRQ callback handlers
  * @list: list to callback
  * @func: intr handler
  * @arg: argument for the handler
  */
 struct sde_irq_callback {
 	struct list_head list;
 	void (*func)(void *arg, int irq_idx);
 	void *arg;
 };

 /**
  * struct sde_irq: IRQ structure contains callback registration info
  * @total_irq:    total number of irq_idx obtained from HW interrupts mapping
  * @irq_cb_tbl:   array of IRQ callbacks setting
  * @enable_counts array of IRQ enable counts
  * @cb_lock:      callback lock
  * @debugfs_file: debugfs file for irq statistics
  */
 struct sde_irq {
 	u32 total_irqs;
 	struct list_head *irq_cb_tbl;
 	atomic_t *enable_counts;
 	atomic_t *irq_counts;
 	spinlock_t cb_lock;
 	struct dentry *debugfs_file;
 };

 struct sde_kms {
 	struct msm_kms base;
 	struct drm_device *dev;
 	int core_rev;
 	struct sde_mdss_cfg *catalog;

 	struct msm_mmu *mmu[MSM_SMMU_DOMAIN_MAX];
 	int mmu_id[MSM_SMMU_DOMAIN_MAX];
 	struct sde_power_client *core_client;

 	/* directory entry for debugfs */
 	void *debugfs_root;
 	struct dentry *debugfs_debug;
 	struct dentry *debugfs_danger;
 	struct dentry *debugfs_vbif;

 	/* io/register spaces: */
 	void __iomem *mmio, *vbif[VBIF_MAX];

 	struct regulator *vdd;
 	struct regulator *mmagic;
 	struct regulator *venus;

 	struct sde_irq_controller irq_controller;

 	struct sde_hw_intr *hw_intr;
 	struct sde_irq irq_obj;

 	struct sde_rm rm;
 	bool rm_init;

 	struct sde_hw_vbif *hw_vbif[VBIF_MAX];
 	struct sde_hw_mdp *hw_mdp;
 	int dsi_display_count;
 	void **dsi_displays;
 	int wb_display_count;
 	void **wb_displays;

 	bool has_danger_ctrl;
 };

 struct vsync_info {
 	u32 frame_count;
 	u32 line_count;
 };

 #define to_sde_kms(x) container_of(x, struct sde_kms, base)

 /**
  * sde_is_custom_client - whether or not to enable non-standard customizations
  *
  * Return: Whether or not the 'sdeclient' module parameter was set on boot up
  */
 bool sde_is_custom_client(void);

 /**
  * Debugfs functions - extra helper functions for debugfs support
  *
  * Main debugfs documentation is located at,
  *
  * Documentation/filesystems/debugfs.txt
  *
  * @sde_debugfs_setup_regset32: Initialize data for sde_debugfs_create_regset32
  * @sde_debugfs_create_regset32: Create 32-bit register dump file
  * @sde_debugfs_get_root: Get root dentry for SDE_KMS's debugfs node
  */

 /**
  * Companion structure for sde_debugfs_create_regset32. Do not initialize the
  * members of this structure explicitly; use sde_debugfs_setup_regset32 instead.
  */
 struct sde_debugfs_regset32 {
 	uint32_t offset;
 	uint32_t blk_len;
 	struct sde_kms *sde_kms;
 };

 /**
  * sde_debugfs_setup_regset32 - Initialize register block definition for debugfs
  * This function is meant to initialize sde_debugfs_regset32 structures for use
  * with sde_debugfs_create_regset32.
  * @regset: opaque register definition structure
  * @offset: sub-block offset
  * @length: sub-block length, in bytes
  * @sde_kms: pointer to sde kms structure
  */
 void sde_debugfs_setup_regset32(struct sde_debugfs_regset32 *regset,
 		uint32_t offset, uint32_t length, struct sde_kms *sde_kms);

 /**
  * sde_debugfs_create_regset32 - Create register read back file for debugfs
  *
  * This function is almost identical to the standard debugfs_create_regset32()
  * function, with the main difference being that a list of register
  * names/offsets do not need to be provided. The 'read' function simply outputs
  * sequential register values over a specified range.
  *
  * Similar to the related debugfs_create_regset32 API, the structure pointed to
  * by regset needs to persist for the lifetime of the created file. The calling
  * code is responsible for initialization/management of this structure.
  *
  * The structure pointed to by regset is meant to be opaque. Please use
  * sde_debugfs_setup_regset32 to initialize it.
  *
  * @name:   File name within debugfs
  * @mode:   File mode within debugfs
  * @parent: Parent directory entry within debugfs, can be NULL
  * @regset: Pointer to persistent register block definition
  *
  * Return: dentry pointer for newly created file, use either debugfs_remove()
  *         or debugfs_remove_recursive() (on a parent directory) to remove the
  *         file
  */
 void *sde_debugfs_create_regset32(const char *name, umode_t mode,
 		void *parent, struct sde_debugfs_regset32 *regset);

 /**
  * sde_debugfs_get_root - Return root directory entry for SDE's debugfs
  *
  * The return value should be passed as the 'parent' argument to subsequent
  * debugfs create calls.
  *
  * @sde_kms: Pointer to SDE's KMS structure
  *
  * Return: dentry pointer for SDE's debugfs location
  */
 void *sde_debugfs_get_root(struct sde_kms *sde_kms);

 /**
  * SDE info management functions
  * These functions/definitions allow for building up a 'sde_info' structure
  * containing one or more "key=value\n" entries.
  */
 #define SDE_KMS_INFO_MAX_SIZE	4096

 /**
  * struct sde_kms_info - connector information structure container
  * @data: Array of information character data
  * @len: Current length of information data
  * @staged_len: Temporary data buffer length, commit to
  *              len using sde_kms_info_stop
  * @start: Whether or not a partial data entry was just started
  */
 struct sde_kms_info {
 	char data[SDE_KMS_INFO_MAX_SIZE];
 	uint32_t len;
 	uint32_t staged_len;
 	bool start;
 };

 /**
  * SDE_KMS_INFO_DATA - Macro for accessing sde_kms_info data bytes
  * @S: Pointer to sde_kms_info structure
  * Returns: Pointer to byte data
  */
 #define SDE_KMS_INFO_DATA(S)    ((S) ? ((struct sde_kms_info *)(S))->data : 0)

 /**
  * SDE_KMS_INFO_DATALEN - Macro for accessing sde_kms_info data length
  * @S: Pointer to sde_kms_info structure
  * Returns: Size of available byte data
  */
 #define SDE_KMS_INFO_DATALEN(S) ((S) ? ((struct sde_kms_info *)(S))->len : 0)

 /**
  * sde_kms_info_reset - reset sde_kms_info structure
  * @info: Pointer to sde_kms_info structure
  */
 void sde_kms_info_reset(struct sde_kms_info *info);

 /**
  * sde_kms_info_add_keyint - add integer value to 'sde_kms_info'
  * @info: Pointer to sde_kms_info structure
  * @key: Pointer to key string
  * @value: Signed 32-bit integer value
  */
 void sde_kms_info_add_keyint(struct sde_kms_info *info,
 		const char *key,
 		int32_t value);

 /**
  * sde_kms_info_add_keystr - add string value to 'sde_kms_info'
  * @info: Pointer to sde_kms_info structure
  * @key: Pointer to key string
  * @value: Pointer to string value
  */
 void sde_kms_info_add_keystr(struct sde_kms_info *info,
 		const char *key,
 		const char *value);

 /**
  * sde_kms_info_start - begin adding key to 'sde_kms_info'
  * Usage:
  *      sde_kms_info_start(key)
  *      sde_kms_info_append(val_1)
  *      ...
  *      sde_kms_info_append(val_n)
  *      sde_kms_info_stop
  * @info: Pointer to sde_kms_info structure
  * @key: Pointer to key string
  */
 void sde_kms_info_start(struct sde_kms_info *info,
 		const char *key);

 /**
  * sde_kms_info_append - append value string to 'sde_kms_info'
  * Usage:
  *      sde_kms_info_start(key)
  *      sde_kms_info_append(val_1)
  *      ...
  *      sde_kms_info_append(val_n)
  *      sde_kms_info_stop
  * @info: Pointer to sde_kms_info structure
  * @str: Pointer to partial value string
  */
 void sde_kms_info_append(struct sde_kms_info *info,
 		const char *str);

 /**
  * sde_kms_info_append_format - append format code string to 'sde_kms_info'
  * Usage:
  *      sde_kms_info_start(key)
  *      sde_kms_info_append_format(fourcc, modifier)
  *      ...
  *      sde_kms_info_stop
  * @info: Pointer to sde_kms_info structure
  * @pixel_format: FOURCC format code
  * @modifier: 64-bit drm format modifier
  */
 void sde_kms_info_append_format(struct sde_kms_info *info,
 		uint32_t pixel_format,
 		uint64_t modifier);

 /**
  * sde_kms_info_stop - finish adding key to 'sde_kms_info'
  * Usage:
  *      sde_kms_info_start(key)
  *      sde_kms_info_append(val_1)
  *      ...
  *      sde_kms_info_append(val_n)
  *      sde_kms_info_stop
  * @info: Pointer to sde_kms_info structure
  */
 void sde_kms_info_stop(struct sde_kms_info *info);

 /**
  * sde_kms_rect_intersect() - find the intersecting region between two rects
  * @res: Intersecting region between the two rectangles
  * @rect1: first rectangle coordinates
  * @rect2: second rectangle coordinates
  */
 void sde_kms_rect_intersect(struct sde_rect *res,
 		const struct sde_rect *rect1, const struct sde_rect *rect2);

 /**
  * Vblank enable/disable functions
  */
 int sde_enable_vblank(struct msm_kms *kms, struct drm_crtc *crtc);
 void sde_disable_vblank(struct msm_kms *kms, struct drm_crtc *crtc);

 #endif /* __sde_kms_H__ */
	/*
	* Copyright (c) 2015-2017, The Linux Foundation. All rights reserved.
	* Copyright (C) 2013 Red Hat
	* Author: Rob Clark <robdclark@gmail.com>
	*
	* This program is free software; you can redistribute it and/or modify it
	* under the terms of the GNU General Public License version 2 as published by
	* the Free Software Foundation.
	*
	* This program is distributed in the hope that it will be useful, but WITHOUT
	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
	* more details.
	*
	* You should have received a copy of the GNU General Public License along with
	* this program. If not, see <http://www.gnu.org/licenses/>.
	*/

	#ifndef __SDE_KMS_H__
	#define __SDE_KMS_H__

	#include "msm_drv.h"
	#include "msm_kms.h"
	#include "msm_mmu.h"
	#include "sde_dbg.h"
	#include "sde_hw_catalog.h"
	#include "sde_hw_ctl.h"
	#include "sde_hw_lm.h"
	#include "sde_hw_interrupts.h"
	#include "sde_hw_wb.h"
	#include "sde_hw_top.h"
	#include "sde_rm.h"
	#include "sde_power_handle.h"
	#include "sde_irq.h"

	#define DRMID(x) ((x) ? (x)->base.id : -1)

	/**
	* SDE_DEBUG - macro for kms/plane/crtc/encoder/connector logs
	* @fmt: Pointer to format string
	*/
	#define SDE_DEBUG(fmt, ...) \
	do { \
	if (unlikely(drm_debug & DRM_UT_KMS)) \
	DRM_DEBUG(fmt, ##__VA_ARGS__); \
	else \
	pr_debug(fmt, ##__VA_ARGS__); \
	} while (0)

	/**
	* SDE_DEBUG_DRIVER - macro for hardware driver logging
	* @fmt: Pointer to format string
	*/
	#define SDE_DEBUG_DRIVER(fmt, ...) \
	do { \
	if (unlikely(drm_debug & DRM_UT_DRIVER)) \
	DRM_ERROR(fmt, ##__VA_ARGS__); \
	else \
	pr_debug(fmt, ##__VA_ARGS__); \
	} while (0)

	#define SDE_ERROR(fmt, ...) pr_err("[sde error]" fmt, ##__VA_ARGS__)

	#define POPULATE_RECT(rect, a, b, c, d, Q16_flag) \
	do { \
	(rect)->x = (Q16_flag) ? (a) >> 16 : (a); \
	(rect)->y = (Q16_flag) ? (b) >> 16 : (b); \
	(rect)->w = (Q16_flag) ? (c) >> 16 : (c); \
	(rect)->h = (Q16_flag) ? (d) >> 16 : (d); \
	} while (0)

	#define CHECK_LAYER_BOUNDS(offset, size, max_size) \
	(((size) > (max_size)) \|\| ((offset) > ((max_size) - (size))))

	/**
	* ktime_compare_safe - compare two ktime structures
	* This macro is similar to the standard ktime_compare() function, but
	* attempts to also handle ktime overflows.
	* @A: First ktime value
	* @B: Second ktime value
	* Returns: -1 if A < B, 0 if A == B, 1 if A > B
	*/
	#define ktime_compare_safe(A, B) \
	ktime_compare(ktime_sub((A), (B)), ktime_set(0, 0))

	#define SDE_NAME_SIZE 12

	/*
	* struct sde_irq_callback - IRQ callback handlers
	* @list: list to callback
	* @func: intr handler
	* @arg: argument for the handler
	*/
	struct sde_irq_callback {
	struct list_head list;
	void (func)(void arg, int irq_idx);
	void *arg;
	};

	/**
	* struct sde_irq: IRQ structure contains callback registration info
	* @total_irq: total number of irq_idx obtained from HW interrupts mapping
	* @irq_cb_tbl: array of IRQ callbacks setting
	* @enable_counts array of IRQ enable counts
	* @cb_lock: callback lock
	* @debugfs_file: debugfs file for irq statistics
	*/
	struct sde_irq {
	u32 total_irqs;
	struct list_head *irq_cb_tbl;
	atomic_t *enable_counts;
	atomic_t *irq_counts;
	spinlock_t cb_lock;
	struct dentry *debugfs_file;
	};

	struct sde_kms {
	struct msm_kms base;
	struct drm_device *dev;
	int core_rev;
	struct sde_mdss_cfg *catalog;

	struct msm_mmu *mmu[MSM_SMMU_DOMAIN_MAX];
	int mmu_id[MSM_SMMU_DOMAIN_MAX];
	struct sde_power_client *core_client;

	/* directory entry for debugfs */
	void *debugfs_root;
	struct dentry *debugfs_debug;
	struct dentry *debugfs_danger;
	struct dentry *debugfs_vbif;

	/* io/register spaces: */
	void __iomem mmio, vbif[VBIF_MAX];

	struct regulator *vdd;
	struct regulator *mmagic;
	struct regulator *venus;

	struct sde_irq_controller irq_controller;

	struct sde_hw_intr *hw_intr;
	struct sde_irq irq_obj;

	struct sde_rm rm;
	bool rm_init;

	struct sde_hw_vbif *hw_vbif[VBIF_MAX];
	struct sde_hw_mdp *hw_mdp;
	int dsi_display_count;
	void **dsi_displays;
	int wb_display_count;
	void **wb_displays;

	bool has_danger_ctrl;
	};

	struct vsync_info {
	u32 frame_count;
	u32 line_count;
	};

	#define to_sde_kms(x) container_of(x, struct sde_kms, base)

	/**
	* sde_is_custom_client - whether or not to enable non-standard customizations
	*
	* Return: Whether or not the 'sdeclient' module parameter was set on boot up
	*/
	bool sde_is_custom_client(void);

	/**
	* Debugfs functions - extra helper functions for debugfs support
	*
	* Main debugfs documentation is located at,
	*
	* Documentation/filesystems/debugfs.txt
	*
	* @sde_debugfs_setup_regset32: Initialize data for sde_debugfs_create_regset32
	* @sde_debugfs_create_regset32: Create 32-bit register dump file
	* @sde_debugfs_get_root: Get root dentry for SDE_KMS's debugfs node
	*/

	/**
	* Companion structure for sde_debugfs_create_regset32. Do not initialize the
	* members of this structure explicitly; use sde_debugfs_setup_regset32 instead.
	*/
	struct sde_debugfs_regset32 {
	uint32_t offset;
	uint32_t blk_len;
	struct sde_kms *sde_kms;
	};

	/**
	* sde_debugfs_setup_regset32 - Initialize register block definition for debugfs
	* This function is meant to initialize sde_debugfs_regset32 structures for use
	* with sde_debugfs_create_regset32.
	* @regset: opaque register definition structure
	* @offset: sub-block offset
	* @length: sub-block length, in bytes
	* @sde_kms: pointer to sde kms structure
	*/
	void sde_debugfs_setup_regset32(struct sde_debugfs_regset32 *regset,
	uint32_t offset, uint32_t length, struct sde_kms *sde_kms);

	/**
	* sde_debugfs_create_regset32 - Create register read back file for debugfs
	*
	* This function is almost identical to the standard debugfs_create_regset32()
	* function, with the main difference being that a list of register
	* names/offsets do not need to be provided. The 'read' function simply outputs
	* sequential register values over a specified range.
	*
	* Similar to the related debugfs_create_regset32 API, the structure pointed to
	* by regset needs to persist for the lifetime of the created file. The calling
	* code is responsible for initialization/management of this structure.
	*
	* The structure pointed to by regset is meant to be opaque. Please use
	* sde_debugfs_setup_regset32 to initialize it.
	*
	* @name: File name within debugfs
	* @mode: File mode within debugfs
	* @parent: Parent directory entry within debugfs, can be NULL
	* @regset: Pointer to persistent register block definition
	*
	* Return: dentry pointer for newly created file, use either debugfs_remove()
	* or debugfs_remove_recursive() (on a parent directory) to remove the
	* file
	*/
	void sde_debugfs_create_regset32(const char name, umode_t mode,
	void parent, struct sde_debugfs_regset32 regset);

	/**
	* sde_debugfs_get_root - Return root directory entry for SDE's debugfs
	*
	* The return value should be passed as the 'parent' argument to subsequent
	* debugfs create calls.
	*
	* @sde_kms: Pointer to SDE's KMS structure
	*
	* Return: dentry pointer for SDE's debugfs location
	*/
	void sde_debugfs_get_root(struct sde_kms sde_kms);

	/**
	* SDE info management functions
	* These functions/definitions allow for building up a 'sde_info' structure
	* containing one or more "key=value\n" entries.
	*/
	#define SDE_KMS_INFO_MAX_SIZE 4096

	/**
	* struct sde_kms_info - connector information structure container
	* @data: Array of information character data
	* @len: Current length of information data
	* @staged_len: Temporary data buffer length, commit to
	* len using sde_kms_info_stop
	* @start: Whether or not a partial data entry was just started
	*/
	struct sde_kms_info {
	char data[SDE_KMS_INFO_MAX_SIZE];
	uint32_t len;
	uint32_t staged_len;
	bool start;
	};

	/**
	* SDE_KMS_INFO_DATA - Macro for accessing sde_kms_info data bytes
	* @S: Pointer to sde_kms_info structure
	* Returns: Pointer to byte data
	*/
	#define SDE_KMS_INFO_DATA(S) ((S) ? ((struct sde_kms_info *)(S))->data : 0)

	/**
	* SDE_KMS_INFO_DATALEN - Macro for accessing sde_kms_info data length
	* @S: Pointer to sde_kms_info structure
	* Returns: Size of available byte data
	*/
	#define SDE_KMS_INFO_DATALEN(S) ((S) ? ((struct sde_kms_info *)(S))->len : 0)

	/**
	* sde_kms_info_reset - reset sde_kms_info structure
	* @info: Pointer to sde_kms_info structure
	*/
	void sde_kms_info_reset(struct sde_kms_info *info);

	/**
	* sde_kms_info_add_keyint - add integer value to 'sde_kms_info'
	* @info: Pointer to sde_kms_info structure
	* @key: Pointer to key string
	* @value: Signed 32-bit integer value
	*/
	void sde_kms_info_add_keyint(struct sde_kms_info *info,
	const char *key,
	int32_t value);

	/**
	* sde_kms_info_add_keystr - add string value to 'sde_kms_info'
	* @info: Pointer to sde_kms_info structure
	* @key: Pointer to key string
	* @value: Pointer to string value
	*/
	void sde_kms_info_add_keystr(struct sde_kms_info *info,
	const char *key,
	const char *value);

	/**
	* sde_kms_info_start - begin adding key to 'sde_kms_info'
	* Usage:
	* sde_kms_info_start(key)
	* sde_kms_info_append(val_1)
	* ...
	* sde_kms_info_append(val_n)
	* sde_kms_info_stop
	* @info: Pointer to sde_kms_info structure
	* @key: Pointer to key string
	*/
	void sde_kms_info_start(struct sde_kms_info *info,
	const char *key);

	/**
	* sde_kms_info_append - append value string to 'sde_kms_info'
	* Usage:
	* sde_kms_info_start(key)
	* sde_kms_info_append(val_1)
	* ...
	* sde_kms_info_append(val_n)
	* sde_kms_info_stop
	* @info: Pointer to sde_kms_info structure
	* @str: Pointer to partial value string
	*/
	void sde_kms_info_append(struct sde_kms_info *info,
	const char *str);

	/**
	* sde_kms_info_append_format - append format code string to 'sde_kms_info'
	* Usage:
	* sde_kms_info_start(key)
	* sde_kms_info_append_format(fourcc, modifier)
	* ...
	* sde_kms_info_stop
	* @info: Pointer to sde_kms_info structure
	* @pixel_format: FOURCC format code
	* @modifier: 64-bit drm format modifier
	*/
	void sde_kms_info_append_format(struct sde_kms_info *info,
	uint32_t pixel_format,
	uint64_t modifier);

	/**
	* sde_kms_info_stop - finish adding key to 'sde_kms_info'
	* Usage:
	* sde_kms_info_start(key)
	* sde_kms_info_append(val_1)
	* ...
	* sde_kms_info_append(val_n)
	* sde_kms_info_stop
	* @info: Pointer to sde_kms_info structure
	*/
	void sde_kms_info_stop(struct sde_kms_info *info);

	/**
	* sde_kms_rect_intersect() - find the intersecting region between two rects
	* @res: Intersecting region between the two rectangles
	* @rect1: first rectangle coordinates
	* @rect2: second rectangle coordinates
	*/
	void sde_kms_rect_intersect(struct sde_rect *res,
	const struct sde_rect rect1, const struct sde_rect rect2);

	/**
	* Vblank enable/disable functions
	*/
	int sde_enable_vblank(struct msm_kms kms, struct drm_crtc crtc);
	void sde_disable_vblank(struct msm_kms kms, struct drm_crtc crtc);

	#endif /* __sde_kms_H__ */