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1/* SPDX-License-Identifier: GPL-2.0-or-later */2/*3 * Copyright (c) 2017 Samsung Electronics Co., Ltd.4 */5 6#ifndef _EXYNOS_DRM_IPP_H_7#define _EXYNOS_DRM_IPP_H_8 9struct exynos_drm_ipp;10struct exynos_drm_ipp_task;11 12/**13 * struct exynos_drm_ipp_funcs - exynos_drm_ipp control functions14 */15struct exynos_drm_ipp_funcs {16 /**17 * @commit:18 *19 * This is the main entry point to start framebuffer processing20 * in the hardware. The exynos_drm_ipp_task has been already validated.21 * This function must not wait until the device finishes processing.22 * When the driver finishes processing, it has to call23 * exynos_exynos_drm_ipp_task_done() function.24 *25 * RETURNS:26 *27 * 0 on success or negative error codes in case of failure.28 */29 int (*commit)(struct exynos_drm_ipp *ipp,30 struct exynos_drm_ipp_task *task);31 32 /**33 * @abort:34 *35 * Informs the driver that it has to abort the currently running36 * task as soon as possible (i.e. as soon as it can stop the device37 * safely), even if the task would not have been finished by then.38 * After the driver performs the necessary steps, it has to call39 * exynos_drm_ipp_task_done() (as if the task ended normally).40 * This function does not have to (and will usually not) wait41 * until the device enters a state when it can be stopped.42 */43 void (*abort)(struct exynos_drm_ipp *ipp,44 struct exynos_drm_ipp_task *task);45};46 47/**48 * struct exynos_drm_ipp - central picture processor module structure49 */50struct exynos_drm_ipp {51 struct drm_device *drm_dev;52 struct device *dev;53 struct list_head head;54 unsigned int id;55 56 const char *name;57 const struct exynos_drm_ipp_funcs *funcs;58 unsigned int capabilities;59 const struct exynos_drm_ipp_formats *formats;60 unsigned int num_formats;61 atomic_t sequence;62 63 spinlock_t lock;64 struct exynos_drm_ipp_task *task;65 struct list_head todo_list;66 wait_queue_head_t done_wq;67};68 69struct exynos_drm_ipp_buffer {70 struct drm_exynos_ipp_task_buffer buf;71 struct drm_exynos_ipp_task_rect rect;72 73 struct exynos_drm_gem *exynos_gem[MAX_FB_BUFFER];74 const struct drm_format_info *format;75 dma_addr_t dma_addr[MAX_FB_BUFFER];76};77 78/**79 * struct exynos_drm_ipp_task - a structure describing transformation that80 * has to be performed by the picture processor hardware module81 */82struct exynos_drm_ipp_task {83 struct device *dev;84 struct exynos_drm_ipp *ipp;85 struct list_head head;86 87 struct exynos_drm_ipp_buffer src;88 struct exynos_drm_ipp_buffer dst;89 90 struct drm_exynos_ipp_task_transform transform;91 struct drm_exynos_ipp_task_alpha alpha;92 93 struct work_struct cleanup_work;94 unsigned int flags;95 int ret;96 97 struct drm_pending_exynos_ipp_event *event;98};99 100#define DRM_EXYNOS_IPP_TASK_DONE (1 << 0)101#define DRM_EXYNOS_IPP_TASK_ASYNC (1 << 1)102 103struct exynos_drm_ipp_formats {104 uint32_t fourcc;105 uint32_t type;106 uint64_t modifier;107 const struct drm_exynos_ipp_limit *limits;108 unsigned int num_limits;109};110 111/* helper macros to set exynos_drm_ipp_formats structure and limits*/112#define IPP_SRCDST_MFORMAT(f, m, l) \113 .fourcc = DRM_FORMAT_##f, .modifier = m, .limits = l, \114 .num_limits = ARRAY_SIZE(l), \115 .type = (DRM_EXYNOS_IPP_FORMAT_SOURCE | \116 DRM_EXYNOS_IPP_FORMAT_DESTINATION)117 118#define IPP_SRCDST_FORMAT(f, l) IPP_SRCDST_MFORMAT(f, 0, l)119 120#define IPP_SIZE_LIMIT(l, val...) \121 .type = (DRM_EXYNOS_IPP_LIMIT_TYPE_SIZE | \122 DRM_EXYNOS_IPP_LIMIT_SIZE_##l), val123 124#define IPP_SCALE_LIMIT(val...) \125 .type = (DRM_EXYNOS_IPP_LIMIT_TYPE_SCALE), val126 127int exynos_drm_ipp_register(struct device *dev, struct exynos_drm_ipp *ipp,128 const struct exynos_drm_ipp_funcs *funcs, unsigned int caps,129 const struct exynos_drm_ipp_formats *formats,130 unsigned int num_formats, const char *name);131void exynos_drm_ipp_unregister(struct device *dev,132 struct exynos_drm_ipp *ipp);133 134void exynos_drm_ipp_task_done(struct exynos_drm_ipp_task *task, int ret);135 136#ifdef CONFIG_DRM_EXYNOS_IPP137int exynos_drm_ipp_get_res_ioctl(struct drm_device *dev, void *data,138 struct drm_file *file_priv);139int exynos_drm_ipp_get_caps_ioctl(struct drm_device *dev, void *data,140 struct drm_file *file_priv);141int exynos_drm_ipp_get_limits_ioctl(struct drm_device *dev, void *data,142 struct drm_file *file_priv);143int exynos_drm_ipp_commit_ioctl(struct drm_device *dev,144 void *data, struct drm_file *file_priv);145#else146static inline int exynos_drm_ipp_get_res_ioctl(struct drm_device *dev,147 void *data, struct drm_file *file_priv)148{149 struct drm_exynos_ioctl_ipp_get_res *resp = data;150 151 resp->count_ipps = 0;152 return 0;153}154static inline int exynos_drm_ipp_get_caps_ioctl(struct drm_device *dev,155 void *data, struct drm_file *file_priv)156{157 return -ENODEV;158}159static inline int exynos_drm_ipp_get_limits_ioctl(struct drm_device *dev,160 void *data, struct drm_file *file_priv)161{162 return -ENODEV;163}164static inline int exynos_drm_ipp_commit_ioctl(struct drm_device *dev,165 void *data, struct drm_file *file_priv)166{167 return -ENODEV;168}169#endif170#endif171