exynos_drm_ipp.c | Explore in Territory

/*
 * Copyright (C) 2017 Samsung Electronics Co.Ltd
 * Authors:
 *	Marek Szyprowski <[email protected]>
 *
 * Exynos DRM Image Post Processing (IPP) related functions
 *
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the "Software"),
 * to deal in the Software without restriction, including without limitation
 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
 * and/or sell copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 */

#include <linux/uaccess.h>

#include <drm/drm_blend.h>
#include <drm/drm_file.h>
#include <drm/drm_fourcc.h>
#include <drm/drm_mode.h>
#include <drm/exynos_drm.h>

#include "exynos_drm_drv.h"
#include "exynos_drm_gem.h"
#include "exynos_drm_ipp.h"

static int num_ipp;
static LIST_HEAD(ipp_list);

/**
 * exynos_drm_ipp_register - Register a new picture processor hardware module
 * @dev: DRM device
 * @ipp: ipp module to init
 * @funcs: callbacks for the new ipp object
 * @caps: bitmask of ipp capabilities (%DRM_EXYNOS_IPP_CAP_*)
 * @formats: array of supported formats
 * @num_formats: size of the supported formats array
 * @name: name (for debugging purposes)
 *
 * Initializes a ipp module.
 *
 * Returns:
 * Zero on success, error code on failure.
 */
int exynos_drm_ipp_register(struct device *dev, struct exynos_drm_ipp *ipp,
		const struct exynos_drm_ipp_funcs *funcs, unsigned int caps,
		const struct exynos_drm_ipp_formats *formats,
		unsigned int num_formats, const char *name)
{ … }

/**
 * exynos_drm_ipp_unregister - Unregister the picture processor module
 * @dev: DRM device
 * @ipp: ipp module
 */
void exynos_drm_ipp_unregister(struct device *dev,
			       struct exynos_drm_ipp *ipp)
{ … }

/**
 * exynos_drm_ipp_get_res_ioctl - enumerate all ipp modules
 * @dev: DRM device
 * @data: ioctl data
 * @file_priv: DRM file info
 *
 * Construct a list of ipp ids.
 *
 * Called by the user via ioctl.
 *
 * Returns:
 * Zero on success, negative errno on failure.
 */
int exynos_drm_ipp_get_res_ioctl(struct drm_device *dev, void *data,
				 struct drm_file *file_priv)
{ … }

static inline struct exynos_drm_ipp *__ipp_get(uint32_t id)
{ … }

/**
 * exynos_drm_ipp_get_caps_ioctl - get ipp module capabilities and formats
 * @dev: DRM device
 * @data: ioctl data
 * @file_priv: DRM file info
 *
 * Construct a structure describing ipp module capabilities.
 *
 * Called by the user via ioctl.
 *
 * Returns:
 * Zero on success, negative errno on failure.
 */
int exynos_drm_ipp_get_caps_ioctl(struct drm_device *dev, void *data,
				  struct drm_file *file_priv)
{ … }

static inline const struct exynos_drm_ipp_formats *__ipp_format_get(
				struct exynos_drm_ipp *ipp, uint32_t fourcc,
				uint64_t mod, unsigned int type)
{ … }

/**
 * exynos_drm_ipp_get_limits_ioctl - get ipp module limits
 * @dev: DRM device
 * @data: ioctl data
 * @file_priv: DRM file info
 *
 * Construct a structure describing ipp module limitations for provided
 * picture format.
 *
 * Called by the user via ioctl.
 *
 * Returns:
 * Zero on success, negative errno on failure.
 */
int exynos_drm_ipp_get_limits_ioctl(struct drm_device *dev, void *data,
				    struct drm_file *file_priv)
{ … }

struct drm_pending_exynos_ipp_event { … };

static inline struct exynos_drm_ipp_task *
			exynos_drm_ipp_task_alloc(struct exynos_drm_ipp *ipp)
{ … }

static const struct exynos_drm_param_map { … } exynos_drm_ipp_params_maps[] = …;

static int exynos_drm_ipp_task_set(struct exynos_drm_ipp_task *task,
				   struct drm_exynos_ioctl_ipp_commit *arg)
{ … }

static int exynos_drm_ipp_task_setup_buffer(struct exynos_drm_ipp_buffer *buf,
					    struct drm_file *filp)
{ … }

static void exynos_drm_ipp_task_release_buf(struct exynos_drm_ipp_buffer *buf)
{ … }

static void exynos_drm_ipp_task_free(struct exynos_drm_ipp *ipp,
				 struct exynos_drm_ipp_task *task)
{ … }

struct drm_ipp_limit { … };

enum drm_ipp_size_id { … };

static const enum drm_exynos_ipp_limit_type limit_id_fallback[IPP_LIMIT_MAX][4] = …;

static inline void __limit_set_val(unsigned int *ptr, unsigned int val)
{ … }

static void __get_size_limit(const struct drm_exynos_ipp_limit *limits,
			     unsigned int num_limits, enum drm_ipp_size_id id,
			     struct drm_ipp_limit *res)
{ … }

static inline bool __align_check(unsigned int val, unsigned int align)
{ … }

static inline bool __size_limit_check(unsigned int val,
				 struct drm_exynos_ipp_limit_val *l)
{ … }

static int exynos_drm_ipp_check_size_limits(struct exynos_drm_ipp_buffer *buf,
	const struct drm_exynos_ipp_limit *limits, unsigned int num_limits,
	bool rotate, bool swap)
{ … }

static inline bool __scale_limit_check(unsigned int src, unsigned int dst,
				       unsigned int min, unsigned int max)
{ … }

static int exynos_drm_ipp_check_scale_limits(
				struct drm_exynos_ipp_task_rect *src,
				struct drm_exynos_ipp_task_rect *dst,
				const struct drm_exynos_ipp_limit *limits,
				unsigned int num_limits, bool swap)
{ … }

static int exynos_drm_ipp_check_format(struct exynos_drm_ipp_task *task,
				       struct exynos_drm_ipp_buffer *buf,
				       struct exynos_drm_ipp_buffer *src,
				       struct exynos_drm_ipp_buffer *dst,
				       bool rotate, bool swap)
{ … }

static int exynos_drm_ipp_task_check(struct exynos_drm_ipp_task *task)
{ … }

static int exynos_drm_ipp_task_setup_buffers(struct exynos_drm_ipp_task *task,
				     struct drm_file *filp)
{ … }


static int exynos_drm_ipp_event_create(struct exynos_drm_ipp_task *task,
				 struct drm_file *file_priv, uint64_t user_data)
{ … }

static void exynos_drm_ipp_event_send(struct exynos_drm_ipp_task *task)
{ … }

static int exynos_drm_ipp_task_cleanup(struct exynos_drm_ipp_task *task)
{ … }

static void exynos_drm_ipp_cleanup_work(struct work_struct *work)
{ … }

static void exynos_drm_ipp_next_task(struct exynos_drm_ipp *ipp);

/**
 * exynos_drm_ipp_task_done - finish given task and set return code
 * @task: ipp task to finish
 * @ret: error code or 0 if operation has been performed successfully
 */
void exynos_drm_ipp_task_done(struct exynos_drm_ipp_task *task, int ret)
{ … }

static void exynos_drm_ipp_next_task(struct exynos_drm_ipp *ipp)
{ … }

static void exynos_drm_ipp_schedule_task(struct exynos_drm_ipp *ipp,
					 struct exynos_drm_ipp_task *task)
{ … }

static void exynos_drm_ipp_task_abort(struct exynos_drm_ipp *ipp,
				      struct exynos_drm_ipp_task *task)
{ … }

/**
 * exynos_drm_ipp_commit_ioctl - perform image processing operation
 * @dev: DRM device
 * @data: ioctl data
 * @file_priv: DRM file info
 *
 * Construct a ipp task from the set of properties provided from the user
 * and try to schedule it to framebuffer processor hardware.
 *
 * Called by the user via ioctl.
 *
 * Returns:
 * Zero on success, negative errno on failure.
 */
int exynos_drm_ipp_commit_ioctl(struct drm_device *dev, void *data,
				struct drm_file *file_priv)
{ … }
linux/drivers/gpu/drm/exynos/exynos_drm_ipp.c
