Adding upstream version 4.19.249.upstream/4.19.249

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 207 insertions, 0 deletions

diff --git a/include/video/imx-ipu-image-convert.h b/include/video/imx-ipu-image-convert.h
new file mode 100644
index 000000000..7b87efc6d
--- /dev/null
+++ b/include/video/imx-ipu-image-convert.h
@@ -0,0 +1,207 @@
+/*
+ * 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__ */