1 files changed, 117 insertions, 0 deletions
diff --git a/drivers/media/platform/qcom/iris/iris_buffer.h b/drivers/media/platform/qcom/iris/iris_buffer.h
new file mode 100644
index 000000000000..c36b6347b077
--- /dev/null
+++ b/drivers/media/platform/qcom/iris/iris_buffer.h
@@ -0,0 +1,117 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * Copyright (c) 2022-2024 Qualcomm Innovation Center, Inc. All rights reserved.
+ */
+
+#ifndef __IRIS_BUFFER_H__
+#define __IRIS_BUFFER_H__
+
+#include <media/videobuf2-v4l2.h>
+
+struct iris_inst;
+
+#define to_iris_buffer(ptr)	container_of(ptr, struct iris_buffer, vb2)
+
+/**
+ * enum iris_buffer_type
+ *
+ * @BUF_INPUT: input buffer to the iris hardware
+ * @BUF_OUTPUT: output buffer from the iris hardware
+ * @BUF_BIN: buffer to store intermediate bin data
+ * @BUF_ARP: buffer for auto register programming
+ * @BUF_COMV: buffer to store colocated motion vectors
+ * @BUF_NON_COMV: buffer to hold config data for HW
+ * @BUF_LINE: buffer to store decoding/encoding context data for HW
+ * @BUF_DPB: buffer to store display picture buffers for reference
+ * @BUF_PERSIST: buffer to store session context data
+ * @BUF_SCRATCH_1: buffer to store decoding/encoding context data for HW
+ * @BUF_TYPE_MAX: max buffer types
+ */
+enum iris_buffer_type {
+	BUF_INPUT = 1,
+	BUF_OUTPUT,
+	BUF_BIN,
+	BUF_ARP,
+	BUF_COMV,
+	BUF_NON_COMV,
+	BUF_LINE,
+	BUF_DPB,
+	BUF_PERSIST,
+	BUF_SCRATCH_1,
+	BUF_TYPE_MAX,
+};
+
+/*
+ * enum iris_buffer_attributes
+ *
+ * BUF_ATTR_DEFERRED: buffer queued by client but not submitted to firmware.
+ * BUF_ATTR_PENDING_RELEASE: buffers requested to be released from firmware.
+ * BUF_ATTR_QUEUED: buffers submitted to firmware.
+ * BUF_ATTR_DEQUEUED: buffers received from firmware.
+ * BUF_ATTR_BUFFER_DONE: buffers sent back to vb2.
+ */
+enum iris_buffer_attributes {
+	BUF_ATTR_DEFERRED		= BIT(0),
+	BUF_ATTR_PENDING_RELEASE	= BIT(1),
+	BUF_ATTR_QUEUED			= BIT(2),
+	BUF_ATTR_DEQUEUED		= BIT(3),
+	BUF_ATTR_BUFFER_DONE		= BIT(4),
+};
+
+/**
+ * struct iris_buffer
+ *
+ * @vb2: v4l2 vb2 buffer
+ * @list: list head for the iris_buffers structure
+ * @inst: iris instance structure
+ * @type: enum for type of iris buffer
+ * @index: identifier for the iris buffer
+ * @fd: file descriptor of the buffer
+ * @buffer_size: accessible buffer size in bytes starting from addr_offset
+ * @data_offset: accessible buffer offset from base address
+ * @data_size: data size in bytes
+ * @device_addr: device address of the buffer
+ * @kvaddr: kernel virtual address of the buffer
+ * @dma_attrs: dma attributes
+ * @flags: buffer flags. It is represented as bit masks.
+ * @timestamp: timestamp of the buffer in nano seconds (ns)
+ * @attr: enum for iris buffer attributes
+ */
+struct iris_buffer {
+	struct vb2_v4l2_buffer		vb2;
+	struct list_head		list;
+	struct iris_inst		*inst;
+	enum iris_buffer_type		type;
+	u32				index;
+	int				fd;
+	size_t				buffer_size;
+	u32				data_offset;
+	size_t				data_size;
+	dma_addr_t			device_addr;
+	void				*kvaddr;
+	unsigned long			dma_attrs;
+	u32				flags; /* V4L2_BUF_FLAG_* */
+	u64				timestamp;
+	enum iris_buffer_attributes	attr;
+};
+
+struct iris_buffers {
+	struct list_head	list;
+	u32			min_count;
+	u32			size;
+};
+
+int iris_get_buffer_size(struct iris_inst *inst, enum iris_buffer_type buffer_type);
+void iris_get_internal_buffers(struct iris_inst *inst, u32 plane);
+int iris_create_internal_buffers(struct iris_inst *inst, u32 plane);
+int iris_queue_internal_buffers(struct iris_inst *inst, u32 plane);
+int iris_destroy_internal_buffer(struct iris_inst *inst, struct iris_buffer *buffer);
+int iris_destroy_internal_buffers(struct iris_inst *inst, u32 plane);
+int iris_alloc_and_queue_persist_bufs(struct iris_inst *inst);
+int iris_alloc_and_queue_input_int_bufs(struct iris_inst *inst);
+int iris_queue_buffer(struct iris_inst *inst, struct iris_buffer *buf);
+int iris_queue_deferred_buffers(struct iris_inst *inst, enum iris_buffer_type buf_type);
+int iris_vb2_buffer_done(struct iris_inst *inst, struct iris_buffer *buf);
+void iris_vb2_queue_error(struct iris_inst *inst);
+
+#endif