176 lines
5 KiB
C
176 lines
5 KiB
C
/*
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* Copyright (c) 2017 Samsung Electronics Co., Ltd.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version.
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*/
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#ifndef _EXYNOS_DRM_IPP_H_
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#define _EXYNOS_DRM_IPP_H_
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#include <drm/drmP.h>
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struct exynos_drm_ipp;
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struct exynos_drm_ipp_task;
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/**
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* struct exynos_drm_ipp_funcs - exynos_drm_ipp control functions
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*/
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struct exynos_drm_ipp_funcs {
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/**
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* @commit:
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*
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* This is the main entry point to start framebuffer processing
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* in the hardware. The exynos_drm_ipp_task has been already validated.
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* This function must not wait until the device finishes processing.
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* When the driver finishes processing, it has to call
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* exynos_exynos_drm_ipp_task_done() function.
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*
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* RETURNS:
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*
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* 0 on success or negative error codes in case of failure.
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*/
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int (*commit)(struct exynos_drm_ipp *ipp,
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struct exynos_drm_ipp_task *task);
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/**
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* @abort:
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*
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* Informs the driver that it has to abort the currently running
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* task as soon as possible (i.e. as soon as it can stop the device
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* safely), even if the task would not have been finished by then.
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* After the driver performs the necessary steps, it has to call
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* exynos_drm_ipp_task_done() (as if the task ended normally).
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* This function does not have to (and will usually not) wait
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* until the device enters a state when it can be stopped.
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*/
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void (*abort)(struct exynos_drm_ipp *ipp,
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struct exynos_drm_ipp_task *task);
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};
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/**
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* struct exynos_drm_ipp - central picture processor module structure
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*/
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struct exynos_drm_ipp {
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struct drm_device *dev;
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struct list_head head;
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unsigned int id;
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const char *name;
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const struct exynos_drm_ipp_funcs *funcs;
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unsigned int capabilities;
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const struct exynos_drm_ipp_formats *formats;
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unsigned int num_formats;
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atomic_t sequence;
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spinlock_t lock;
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struct exynos_drm_ipp_task *task;
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struct list_head todo_list;
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wait_queue_head_t done_wq;
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};
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struct exynos_drm_ipp_buffer {
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struct drm_exynos_ipp_task_buffer buf;
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struct drm_exynos_ipp_task_rect rect;
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struct exynos_drm_gem *exynos_gem[MAX_FB_BUFFER];
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const struct drm_format_info *format;
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dma_addr_t dma_addr[MAX_FB_BUFFER];
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};
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/**
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* struct exynos_drm_ipp_task - a structure describing transformation that
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* has to be performed by the picture processor hardware module
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*/
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struct exynos_drm_ipp_task {
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struct drm_device *dev;
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struct exynos_drm_ipp *ipp;
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struct list_head head;
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struct exynos_drm_ipp_buffer src;
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struct exynos_drm_ipp_buffer dst;
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struct drm_exynos_ipp_task_transform transform;
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struct drm_exynos_ipp_task_alpha alpha;
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struct work_struct cleanup_work;
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unsigned int flags;
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int ret;
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struct drm_pending_exynos_ipp_event *event;
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};
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#define DRM_EXYNOS_IPP_TASK_DONE (1 << 0)
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#define DRM_EXYNOS_IPP_TASK_ASYNC (1 << 1)
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struct exynos_drm_ipp_formats {
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uint32_t fourcc;
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uint32_t type;
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uint64_t modifier;
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const struct drm_exynos_ipp_limit *limits;
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unsigned int num_limits;
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};
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/* helper macros to set exynos_drm_ipp_formats structure and limits*/
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#define IPP_SRCDST_MFORMAT(f, m, l) \
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.fourcc = DRM_FORMAT_##f, .modifier = m, .limits = l, \
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.num_limits = ARRAY_SIZE(l), \
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.type = (DRM_EXYNOS_IPP_FORMAT_SOURCE | \
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DRM_EXYNOS_IPP_FORMAT_DESTINATION)
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#define IPP_SRCDST_FORMAT(f, l) IPP_SRCDST_MFORMAT(f, 0, l)
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#define IPP_SIZE_LIMIT(l, val...) \
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.type = (DRM_EXYNOS_IPP_LIMIT_TYPE_SIZE | \
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DRM_EXYNOS_IPP_LIMIT_SIZE_##l), val
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#define IPP_SCALE_LIMIT(val...) \
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.type = (DRM_EXYNOS_IPP_LIMIT_TYPE_SCALE), val
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int exynos_drm_ipp_register(struct drm_device *dev, struct exynos_drm_ipp *ipp,
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const struct exynos_drm_ipp_funcs *funcs, unsigned int caps,
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const struct exynos_drm_ipp_formats *formats,
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unsigned int num_formats, const char *name);
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void exynos_drm_ipp_unregister(struct drm_device *dev,
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struct exynos_drm_ipp *ipp);
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void exynos_drm_ipp_task_done(struct exynos_drm_ipp_task *task, int ret);
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#ifdef CONFIG_DRM_EXYNOS_IPP
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int exynos_drm_ipp_get_res_ioctl(struct drm_device *dev, void *data,
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struct drm_file *file_priv);
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int exynos_drm_ipp_get_caps_ioctl(struct drm_device *dev, void *data,
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struct drm_file *file_priv);
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int exynos_drm_ipp_get_limits_ioctl(struct drm_device *dev, void *data,
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struct drm_file *file_priv);
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int exynos_drm_ipp_commit_ioctl(struct drm_device *dev,
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void *data, struct drm_file *file_priv);
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#else
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static inline int exynos_drm_ipp_get_res_ioctl(struct drm_device *dev,
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void *data, struct drm_file *file_priv)
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{
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struct drm_exynos_ioctl_ipp_get_res *resp = data;
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resp->count_ipps = 0;
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return 0;
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}
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static inline int exynos_drm_ipp_get_caps_ioctl(struct drm_device *dev,
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void *data, struct drm_file *file_priv)
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{
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return -ENODEV;
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}
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static inline int exynos_drm_ipp_get_limits_ioctl(struct drm_device *dev,
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void *data, struct drm_file *file_priv)
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{
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return -ENODEV;
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}
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static inline int exynos_drm_ipp_commit_ioctl(struct drm_device *dev,
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void *data, struct drm_file *file_priv)
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{
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return -ENODEV;
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}
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#endif
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#endif
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