168 lines
4.5 KiB
C
168 lines
4.5 KiB
C
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/*
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* NVIDIA Tegra CSI Device Header
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*
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* Copyright (c) 2015-2019, NVIDIA CORPORATION. All rights reserved.
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*
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* Author: Bryan Wu <pengw@nvidia.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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#ifndef __CSI_H_
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#define __CSI_H_
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#include <media/media-entity.h>
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#include <media/v4l2-async.h>
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#include <media/v4l2-ctrls.h>
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#include <media/v4l2-subdev.h>
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#include <media/camera_common.h>
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#include <media/vi2_registers.h>
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#include <media/csi4_registers.h>
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#include <linux/platform_device.h>
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#include "soc/tegra/camrtc-capture.h"
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#define MAX_CSI_BLOCK_LANES 4
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#define NUM_TPG_INSTANCE 6
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#define csi_port_is_valid(port) (port > NVCSI_PORT_H ? 0 : 1)
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enum camera_gang_mode {
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CAMERA_NO_GANG_MODE = 0,
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CAMERA_GANG_L_R = 1,
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CAMERA_GANG_T_B,
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CAMERA_GANG_R_L,
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CAMERA_GANG_B_T
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};
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struct tegra_channel;
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struct tpg_frmfmt {
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struct v4l2_frmsize_discrete frmsize;
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int pixel_format;
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int framerate;
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int h_blank;
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int v_blank;
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};
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struct tegra_csi_port {
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void __iomem *pixel_parser;
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void __iomem *cil;
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void __iomem *tpg;
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u32 csi_port;
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u32 stream_id;
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u32 virtual_channel_id;
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/* One pair of sink/source pad has one format */
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struct v4l2_mbus_framefmt format;
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const struct tegra_video_format *core_format;
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unsigned int lanes;
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unsigned int framerate;
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unsigned int h_blank;
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unsigned int v_blank;
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};
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struct tegra_csi_device {
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struct device *dev;
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struct platform_device *pdev;
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char devname[32];
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void __iomem *iomem_base;
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void __iomem *iomem[3];
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struct clk *plld_dsi;
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struct clk *plld;
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struct camera_common_data s_data[6];
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struct tegra_csi_port *ports;
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struct media_pad *pads;
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unsigned int clk_freq;
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int num_ports;
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int num_channels;
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struct list_head csi_chans;
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struct tegra_csi_channel *tpg_start;
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const struct tegra_csi_fops *fops;
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const struct tpg_frmfmt *tpg_frmfmt_table;
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unsigned int tpg_frmfmt_table_size;
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atomic_t power_ref;
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struct dentry *debugdir;
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struct mutex source_update;
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int tpg_active;
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int sensor_active;
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/* num_tpg_channels is a fixed number per soc*/
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int num_tpg_channels;
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};
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/*
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* subdev: channel subdev
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* numports: Number of CSI ports in use for this channel
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* numlanes: Number of CIL lanes in use
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*/
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struct tegra_csi_channel {
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struct list_head list;
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struct v4l2_subdev subdev;
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struct media_pad *pads;
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struct media_pipeline pipe;
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struct v4l2_subdev *sensor_sd;
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struct tegra_csi_device *csi;
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struct tegra_csi_port *ports;
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unsigned char port[TEGRA_CSI_BLOCKS];
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struct mutex format_lock;
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unsigned int numports;
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unsigned int numlanes;
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unsigned int pg_mode;
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struct camera_common_data *s_data;
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unsigned int id;
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atomic_t is_streaming;
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struct device_node *of_node;
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};
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static inline struct tegra_csi_channel *to_csi_chan(struct v4l2_subdev *subdev)
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{
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return container_of(subdev, struct tegra_csi_channel, subdev);
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}
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static inline struct tegra_csi_device *to_csi(struct v4l2_subdev *subdev)
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{
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struct tegra_csi_channel *chan = to_csi_chan(subdev);
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return chan->csi;
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}
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u32 read_phy_mode_from_dt(struct tegra_csi_channel *chan);
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u32 read_settle_time_from_dt(struct tegra_csi_channel *chan);
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u32 read_discontinuous_clk_from_dt(struct tegra_csi_channel *chan);
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u64 read_pixel_clk_from_dt(struct tegra_csi_channel *chan);
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void set_csi_portinfo(struct tegra_csi_device *csi,
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unsigned int port, unsigned int numlanes);
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void tegra_csi_status(struct tegra_csi_channel *chan, int port_idx);
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int tegra_csi_error(struct tegra_csi_channel *chan, int port_idx);
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int tegra_csi_start_streaming(struct tegra_csi_channel *chan, int port_idx);
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void tegra_csi_stop_streaming(struct tegra_csi_channel *chan, int port_idx);
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void tegra_csi_error_recover(struct tegra_csi_channel *chan, int port_idx);
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int tegra_csi_init(struct tegra_csi_device *csi,
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struct platform_device *pdev);
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int tegra_csi_mipi_calibrate(struct tegra_csi_device *csi,
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bool on);
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int tegra_csi_media_controller_init(struct tegra_csi_device *csi,
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struct platform_device *pdev);
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int tegra_csi_media_controller_remove(struct tegra_csi_device *csi);
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struct tegra_csi_device *tegra_get_mc_csi(void);
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int tpg_csi_media_controller_init(struct tegra_csi_device *csi, int pg_mode);
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void tpg_csi_media_controller_cleanup(struct tegra_csi_device *csi);
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/* helper functions to calculate clock setting times */
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unsigned int tegra_csi_clk_settling_time(
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struct tegra_csi_device *csi,
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const unsigned int csicil_clk_mhz);
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unsigned int tegra_csi_ths_settling_time(
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struct tegra_csi_device *csi,
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const unsigned int csicil_clk_mhz,
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const unsigned int mipi_clk_mhz);
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#endif
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