| /* |
| * Copyright (C) 2012-2016 Mentor Graphics Inc. |
| * |
| * i.MX Queued image conversion support, with tiling and rotation. |
| * |
| * This program is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License as published by the |
| * Free Software Foundation; either version 2 of the License, or (at your |
| * option) any later version. |
| * |
| * 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. |
| */ |
| #ifndef __IMX_IPU_IMAGE_CONVERT_H__ |
| #define __IMX_IPU_IMAGE_CONVERT_H__ |
| |
| #include <video/imx-ipu-v3.h> |
| |
| struct ipu_image_convert_ctx; |
| |
| /** |
| * struct ipu_image_convert_run - image conversion run request struct |
| * |
| * @ctx: the conversion context |
| * @in_phys: dma addr of input image buffer for this run |
| * @out_phys: dma addr of output image buffer for this run |
| * @status: completion status of this run |
| */ |
| struct ipu_image_convert_run { |
| struct ipu_image_convert_ctx *ctx; |
| |
| dma_addr_t in_phys; |
| dma_addr_t out_phys; |
| |
| int status; |
| |
| /* internal to image converter, callers don't touch */ |
| struct list_head list; |
| }; |
| |
| /** |
| * ipu_image_convert_cb_t - conversion callback function prototype |
| * |
| * @run: the completed conversion run pointer |
| * @ctx: a private context pointer for the callback |
| */ |
| typedef void (*ipu_image_convert_cb_t)(struct ipu_image_convert_run *run, |
| void *ctx); |
| |
| /** |
| * ipu_image_convert_enum_format() - enumerate the image converter's |
| * supported input and output pixel formats. |
| * |
| * @index: pixel format index |
| * @fourcc: v4l2 fourcc for this index |
| * |
| * Returns 0 with a valid index and fills in v4l2 fourcc, -EINVAL otherwise. |
| * |
| * In V4L2, drivers can call ipu_image_enum_format() in .enum_fmt. |
| */ |
| int ipu_image_convert_enum_format(int index, u32 *fourcc); |
| |
| /** |
| * ipu_image_convert_adjust() - adjust input/output images to IPU restrictions. |
| * |
| * @in: input image format, adjusted on return |
| * @out: output image format, adjusted on return |
| * @rot_mode: rotation mode |
| * |
| * In V4L2, drivers can call ipu_image_convert_adjust() in .try_fmt. |
| */ |
| void ipu_image_convert_adjust(struct ipu_image *in, struct ipu_image *out, |
| enum ipu_rotate_mode rot_mode); |
| |
| /** |
| * ipu_image_convert_verify() - verify that input/output image formats |
| * and rotation mode meet IPU restrictions. |
| * |
| * @in: input image format |
| * @out: output image format |
| * @rot_mode: rotation mode |
| * |
| * Returns 0 if the formats and rotation mode meet IPU restrictions, |
| * -EINVAL otherwise. |
| */ |
| int ipu_image_convert_verify(struct ipu_image *in, struct ipu_image *out, |
| enum ipu_rotate_mode rot_mode); |
| |
| /** |
| * ipu_image_convert_prepare() - prepare a conversion context. |
| * |
| * @ipu: the IPU handle to use for the conversions |
| * @ic_task: the IC task to use for the conversions |
| * @in: input image format |
| * @out: output image format |
| * @rot_mode: rotation mode |
| * @complete: run completion callback |
| * @complete_context: a context pointer for the completion callback |
| * |
| * Returns an opaque conversion context pointer on success, error pointer |
| * on failure. The input/output formats and rotation mode must already meet |
| * IPU retrictions. |
| * |
| * In V4L2, drivers should call ipu_image_convert_prepare() at streamon. |
| */ |
| struct ipu_image_convert_ctx * |
| ipu_image_convert_prepare(struct ipu_soc *ipu, enum ipu_ic_task ic_task, |
| struct ipu_image *in, struct ipu_image *out, |
| enum ipu_rotate_mode rot_mode, |
| ipu_image_convert_cb_t complete, |
| void *complete_context); |
| |
| /** |
| * ipu_image_convert_unprepare() - unprepare a conversion context. |
| * |
| * @ctx: the conversion context pointer to unprepare |
| * |
| * Aborts any active or pending conversions for this context and |
| * frees the context. Any currently active or pending runs belonging |
| * to this context are returned via the completion callback with an |
| * error run status. |
| * |
| * In V4L2, drivers should call ipu_image_convert_unprepare() at |
| * streamoff. |
| */ |
| void ipu_image_convert_unprepare(struct ipu_image_convert_ctx *ctx); |
| |
| /** |
| * ipu_image_convert_queue() - queue a conversion run |
| * |
| * @run: the run request pointer |
| * |
| * ipu_image_convert_run must be dynamically allocated (_not_ as a local |
| * var) by callers and filled in with a previously prepared conversion |
| * context handle and the dma addr's of the input and output image buffers |
| * for this conversion run. |
| * |
| * When this conversion completes, the run pointer is returned via the |
| * completion callback. The caller is responsible for freeing the run |
| * object after it completes. |
| * |
| * In V4L2, drivers should call ipu_image_convert_queue() while |
| * streaming to queue the conversion of a received input buffer. |
| * For example mem2mem devices this would be called in .device_run. |
| */ |
| int ipu_image_convert_queue(struct ipu_image_convert_run *run); |
| |
| /** |
| * ipu_image_convert_abort() - abort conversions |
| * |
| * @ctx: the conversion context pointer |
| * |
| * This will abort any active or pending conversions for this context. |
| * Any currently active or pending runs belonging to this context are |
| * returned via the completion callback with an error run status. |
| */ |
| void ipu_image_convert_abort(struct ipu_image_convert_ctx *ctx); |
| |
| /** |
| * ipu_image_convert() - asynchronous image conversion request |
| * |
| * @ipu: the IPU handle to use for the conversion |
| * @ic_task: the IC task to use for the conversion |
| * @in: input image format |
| * @out: output image format |
| * @rot_mode: rotation mode |
| * @complete: run completion callback |
| * @complete_context: a context pointer for the completion callback |
| * |
| * Request a single image conversion. Returns the run that has been queued. |
| * A conversion context is automatically created and is available in run->ctx. |
| * As with ipu_image_convert_prepare(), the input/output formats and rotation |
| * mode must already meet IPU retrictions. |
| * |
| * On successful return the caller can queue more run requests if needed, using |
| * the prepared context in run->ctx. The caller is responsible for unpreparing |
| * the context when no more conversion requests are needed. |
| */ |
| struct ipu_image_convert_run * |
| ipu_image_convert(struct ipu_soc *ipu, enum ipu_ic_task ic_task, |
| struct ipu_image *in, struct ipu_image *out, |
| enum ipu_rotate_mode rot_mode, |
| ipu_image_convert_cb_t complete, |
| void *complete_context); |
| |
| /** |
| * ipu_image_convert_sync() - synchronous single image conversion request |
| * |
| * @ipu: the IPU handle to use for the conversion |
| * @ic_task: the IC task to use for the conversion |
| * @in: input image format |
| * @out: output image format |
| * @rot_mode: rotation mode |
| * |
| * Carry out a single image conversion. Returns when the conversion |
| * completes. The input/output formats and rotation mode must already |
| * meet IPU retrictions. The created context is automatically unprepared |
| * and the run freed on return. |
| */ |
| int ipu_image_convert_sync(struct ipu_soc *ipu, enum ipu_ic_task ic_task, |
| struct ipu_image *in, struct ipu_image *out, |
| enum ipu_rotate_mode rot_mode); |
| |
| |
| #endif /* __IMX_IPU_IMAGE_CONVERT_H__ */ |
