media: venus: hfi_plat: Add hfi platform buffers ops

>From Venus v6 and beyond the buffer size and count have to be
calculated in the v4l2 driver instead of getting them from
firmware.
Signed-off-by: Stanimir Varbanov <stanimir.varbanov@linaro.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>

drivers/media/platform/qcom/venus/hfi_plat_bufs.h

+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * Copyright (c) 2020, The Linux Foundation. All rights reserved.
+ */
+
+#ifndef __HFI_PLATFORM_BUFFERS_H__
+#define __HFI_PLATFORM_BUFFERS_H__
+
+#include <linux/types.h>
+#include "hfi_helper.h"
+
+struct hfi_plat_buffers_params {
+	u32 width;
+	u32 height;
+	u32 codec;
+	u32 hfi_color_fmt;
+	enum hfi_version version;
+	u32 num_vpp_pipes;
+	union {
+		struct {
+			u32 max_mbs_per_frame;
+			u32 buffer_size_limit;
+			bool is_secondary_output;
+			bool is_interlaced;
+		} dec;
+		struct {
+			u32 work_mode;
+			u32 rc_type;
+			u32 num_b_frames;
+			bool is_tenbit;
+		} enc;
+	};
+};
+
+#endif

drivers/media/platform/qcom/venus/hfi_platform.h

@@ -10,6 +10,7 @@
 #include <linux/videodev2.h>
 
 #include "hfi.h"
+#include "hfi_plat_bufs.h"
 #include "hfi_helper.h"
 
 #define MAX_PLANES		4
@@ -50,6 +51,8 @@ struct hfi_platform {
 	void (*codecs)(u32 *enc_codecs, u32 *dec_codecs, u32 *count);
 	const struct hfi_plat_caps *(*capabilities)(unsigned int *entries);
 	u8 (*num_vpp_pipes)(void);
+	int (*bufreq)(struct hfi_plat_buffers_params *params, u32 session_type,
+		      u32 buftype, struct hfi_buffer_requirements *bufreq);
 };
 
 extern const struct hfi_platform hfi_plat_v4;