media: camera: Build tegra-camera as OOT module

Port camera drivers below from /kenrel/nvidia to
/kernel/nvidia-oot as OOT modules:
- Fusa-capture driver
- Tegra V4L2 framework driver
- vi/csi driver
- tegra camera platform driver

Change-Id: I390af27096425bb11e0934201dd1a90f001bb3fa
Signed-off-by: Frank Chen <frankc@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nv-oot/+/2780698
Reviewed-by: FNU Raunak <fraunak@nvidia.com>
Reviewed-by: Ankur Pawar <ankurp@nvidia.com>
Reviewed-by: Shiva Dubey <sdubey@nvidia.com>
GVS: Gerrit_Virtual_Submit <buildbot_gerritrpt@nvidia.com>

include/media/tegra_camera_platform.h

@@ -0,0 +1,95 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * Copyright (c) 2015-2022, NVIDIA CORPORATION.  All rights reserved.
+ */
+
+#ifndef _TEGRA_CAMERA_PLATFORM_H_
+#define _TEGRA_CAMERA_PLATFORM_H_
+
+#include <uapi/media/tegra_camera_platform.h>
+
+/* avoid overflows */
+#define DEFAULT_PG_CLK_RATE (UINT_MAX - 1)
+
+/**
+ * enum tegra_camera_hw_type - camera hw engines
+ */
+enum tegra_camera_hw_type {
+	HWTYPE_NONE = 0,
+	HWTYPE_CSI,
+	HWTYPE_SLVSEC,
+	HWTYPE_VI,
+	HWTYPE_ISPA,
+	HWTYPE_ISPB,
+	HWTYPE_MAX,
+};
+
+/**
+ * enum tegra_camera_sensor_type - camera sensor types
+ */
+enum tegra_camera_sensor_type {
+	SENSORTYPE_NONE = 0,
+	SENSORTYPE_DPHY,
+	SENSORTYPE_CPHY,
+	SENSORTYPE_SLVSEC,
+	SENSORTYPE_VIRTUAL,
+	/* HDMI-IN or other inputs */
+	SENSORTYPE_OTHER,
+	SENSORTYPE_MAX,
+};
+
+/**
+ * struct tegra_camera_dev_info - camera devices information
+ * @priv: a unique identifier assigned during registration
+ * @hw_type: type of HW engine as defined by the enum above
+ * @bus_width: csi bus width for clock calculation
+ * @overhead: hw/ sw overhead considered while calculations
+ * @ppc: HW capability, pixels per clock
+ * @clk_rate: calculated clk rate for this node
+ * @actual_clk_rate: clk rate set by nvhost
+ * @bw: calculated bw for this node
+ * @use_max: populated by hw engine to decide it's clocking policy
+ * @memory_latency: latency allowed for memory freq scaling
+ * @pdev: pointer to platform_data
+ * @sensor_type: type of sensor as defined by the enum above
+ * @pixel_rate: pixel rate coming out of the sensor
+ * @pixel_bit_depth: bits per pixel
+ * @bpp: bytes per pixel
+ * @stream_on: stream enabled on the channel
+ * @device_node: list node
+ */
+struct tegra_camera_dev_info {
+	void *priv;
+	u32 hw_type;
+	u32 bus_width;
+	u32 overhead;
+	u64 lane_speed;
+	u32 lane_num;
+	u32 ppc;
+	u64 clk_rate;
+	u64 pg_clk_rate;
+	unsigned long actual_clk_rate;
+	u64 bw;
+	bool use_max;
+	u32 memory_latency;
+	struct platform_device *pdev;
+	u32 sensor_type;
+	u64 pixel_rate;
+	u32 pixel_bit_depth;
+	u32 bpp;
+	bool stream_on;
+	struct list_head device_node;
+};
+
+int tegra_camera_update_isobw(void);
+int tegra_camera_emc_clk_enable(void);
+int tegra_camera_emc_clk_disable(void);
+int tegra_camera_device_register(struct tegra_camera_dev_info *cdev_info,
+					void *priv);
+int tegra_camera_device_unregister(void *priv);
+int tegra_camera_get_device_list_entry(const u32 hw_type, const void *priv,
+		struct tegra_camera_dev_info *cdev_info);
+int tegra_camera_get_device_list_stats(u32 *n_sensors, u32 *n_hwtypes);
+int tegra_camera_update_clknbw(void *priv, bool stream_on);
+
+#endif