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198 lines
6.5 KiB
198 lines
6.5 KiB
/* SPDX-License-Identifier: GPL-2.0-or-later */ |
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/* |
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* Copyright (C) 2012-2016 Mentor Graphics Inc. |
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* |
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* i.MX Queued image conversion support, with tiling and rotation. |
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*/ |
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#ifndef __IMX_IPU_IMAGE_CONVERT_H__ |
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#define __IMX_IPU_IMAGE_CONVERT_H__ |
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#include <video/imx-ipu-v3.h> |
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struct ipu_image_convert_ctx; |
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/** |
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* struct ipu_image_convert_run - image conversion run request struct |
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* |
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* @ctx: the conversion context |
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* @in_phys: dma addr of input image buffer for this run |
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* @out_phys: dma addr of output image buffer for this run |
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* @status: completion status of this run |
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*/ |
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struct ipu_image_convert_run { |
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struct ipu_image_convert_ctx *ctx; |
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dma_addr_t in_phys; |
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dma_addr_t out_phys; |
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int status; |
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/* internal to image converter, callers don't touch */ |
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struct list_head list; |
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}; |
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/** |
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* ipu_image_convert_cb_t - conversion callback function prototype |
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* |
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* @run: the completed conversion run pointer |
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* @ctx: a private context pointer for the callback |
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*/ |
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typedef void (*ipu_image_convert_cb_t)(struct ipu_image_convert_run *run, |
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void *ctx); |
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/** |
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* ipu_image_convert_enum_format() - enumerate the image converter's |
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* supported input and output pixel formats. |
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* |
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* @index: pixel format index |
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* @fourcc: v4l2 fourcc for this index |
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* |
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* Returns 0 with a valid index and fills in v4l2 fourcc, -EINVAL otherwise. |
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* |
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* In V4L2, drivers can call ipu_image_enum_format() in .enum_fmt. |
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*/ |
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int ipu_image_convert_enum_format(int index, u32 *fourcc); |
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/** |
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* ipu_image_convert_adjust() - adjust input/output images to IPU restrictions. |
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* |
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* @in: input image format, adjusted on return |
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* @out: output image format, adjusted on return |
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* @rot_mode: rotation mode |
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* |
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* In V4L2, drivers can call ipu_image_convert_adjust() in .try_fmt. |
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*/ |
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void ipu_image_convert_adjust(struct ipu_image *in, struct ipu_image *out, |
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enum ipu_rotate_mode rot_mode); |
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/** |
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* ipu_image_convert_verify() - verify that input/output image formats |
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* and rotation mode meet IPU restrictions. |
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* |
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* @in: input image format |
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* @out: output image format |
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* @rot_mode: rotation mode |
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* |
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* Returns 0 if the formats and rotation mode meet IPU restrictions, |
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* -EINVAL otherwise. |
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*/ |
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int ipu_image_convert_verify(struct ipu_image *in, struct ipu_image *out, |
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enum ipu_rotate_mode rot_mode); |
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/** |
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* ipu_image_convert_prepare() - prepare a conversion context. |
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* |
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* @ipu: the IPU handle to use for the conversions |
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* @ic_task: the IC task to use for the conversions |
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* @in: input image format |
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* @out: output image format |
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* @rot_mode: rotation mode |
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* @complete: run completion callback |
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* @complete_context: a context pointer for the completion callback |
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* |
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* Returns an opaque conversion context pointer on success, error pointer |
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* on failure. The input/output formats and rotation mode must already meet |
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* IPU retrictions. |
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* |
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* In V4L2, drivers should call ipu_image_convert_prepare() at streamon. |
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*/ |
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struct ipu_image_convert_ctx * |
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ipu_image_convert_prepare(struct ipu_soc *ipu, enum ipu_ic_task ic_task, |
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struct ipu_image *in, struct ipu_image *out, |
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enum ipu_rotate_mode rot_mode, |
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ipu_image_convert_cb_t complete, |
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void *complete_context); |
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/** |
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* ipu_image_convert_unprepare() - unprepare a conversion context. |
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* |
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* @ctx: the conversion context pointer to unprepare |
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* |
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* Aborts any active or pending conversions for this context and |
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* frees the context. Any currently active or pending runs belonging |
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* to this context are returned via the completion callback with an |
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* error run status. |
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* |
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* In V4L2, drivers should call ipu_image_convert_unprepare() at |
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* streamoff. |
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*/ |
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void ipu_image_convert_unprepare(struct ipu_image_convert_ctx *ctx); |
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/** |
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* ipu_image_convert_queue() - queue a conversion run |
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* |
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* @run: the run request pointer |
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* |
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* ipu_image_convert_run must be dynamically allocated (_not_ as a local |
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* var) by callers and filled in with a previously prepared conversion |
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* context handle and the dma addr's of the input and output image buffers |
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* for this conversion run. |
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* |
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* When this conversion completes, the run pointer is returned via the |
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* completion callback. The caller is responsible for freeing the run |
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* object after it completes. |
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* |
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* In V4L2, drivers should call ipu_image_convert_queue() while |
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* streaming to queue the conversion of a received input buffer. |
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* For example mem2mem devices this would be called in .device_run. |
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*/ |
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int ipu_image_convert_queue(struct ipu_image_convert_run *run); |
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/** |
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* ipu_image_convert_abort() - abort conversions |
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* |
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* @ctx: the conversion context pointer |
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* |
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* This will abort any active or pending conversions for this context. |
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* Any currently active or pending runs belonging to this context are |
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* returned via the completion callback with an error run status. |
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*/ |
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void ipu_image_convert_abort(struct ipu_image_convert_ctx *ctx); |
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/** |
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* ipu_image_convert() - asynchronous image conversion request |
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* |
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* @ipu: the IPU handle to use for the conversion |
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* @ic_task: the IC task to use for the conversion |
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* @in: input image format |
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* @out: output image format |
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* @rot_mode: rotation mode |
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* @complete: run completion callback |
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* @complete_context: a context pointer for the completion callback |
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* |
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* Request a single image conversion. Returns the run that has been queued. |
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* A conversion context is automatically created and is available in run->ctx. |
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* As with ipu_image_convert_prepare(), the input/output formats and rotation |
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* mode must already meet IPU retrictions. |
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* |
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* On successful return the caller can queue more run requests if needed, using |
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* the prepared context in run->ctx. The caller is responsible for unpreparing |
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* the context when no more conversion requests are needed. |
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*/ |
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struct ipu_image_convert_run * |
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ipu_image_convert(struct ipu_soc *ipu, enum ipu_ic_task ic_task, |
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struct ipu_image *in, struct ipu_image *out, |
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enum ipu_rotate_mode rot_mode, |
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ipu_image_convert_cb_t complete, |
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void *complete_context); |
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/** |
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* ipu_image_convert_sync() - synchronous single image conversion request |
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* |
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* @ipu: the IPU handle to use for the conversion |
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* @ic_task: the IC task to use for the conversion |
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* @in: input image format |
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* @out: output image format |
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* @rot_mode: rotation mode |
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* |
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* Carry out a single image conversion. Returns when the conversion |
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* completes. The input/output formats and rotation mode must already |
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* meet IPU retrictions. The created context is automatically unprepared |
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* and the run freed on return. |
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*/ |
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int ipu_image_convert_sync(struct ipu_soc *ipu, enum ipu_ic_task ic_task, |
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struct ipu_image *in, struct ipu_image *out, |
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enum ipu_rotate_mode rot_mode); |
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#endif /* __IMX_IPU_IMAGE_CONVERT_H__ */
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