105 lines
3.4 KiB
C
105 lines
3.4 KiB
C
/*
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* Copyright (c) 2018-2020, NVIDIA Corporation. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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/**
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* @file
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* <b>GMSL API: Gigabit Multimedia Serial Link protocol</b>
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*
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* @b Description: Defines elements used to set up and use a GMSL link.
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*/
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#ifndef __GMSL_LINK_H__
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/**
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* \defgroup GMSL Gigabit Multimedia Serial Link (GMSL)
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*
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* Defines the interface used to control the MAX9295 serializer and
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* MAX9296 deserializer modules.
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*
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* @ingroup serdes_group
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* @{
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*/
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#define __GMSL_LINK_H__
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#define GMSL_CSI_1X4_MODE 0x1
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#define GMSL_CSI_2X4_MODE 0x2
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#define GMSL_CSI_2X2_MODE 0x3
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#define GMSL_CSI_4X2_MODE 0x4
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#define GMSL_CSI_PORT_A 0x0
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#define GMSL_CSI_PORT_B 0x1
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#define GMSL_CSI_PORT_C 0x2
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#define GMSL_CSI_PORT_D 0x3
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#define GMSL_CSI_PORT_E 0x4
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#define GMSL_CSI_PORT_F 0x5
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#define GMSL_SERDES_CSI_LINK_A 0x1
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#define GMSL_SERDES_CSI_LINK_B 0x2
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/* Didn't find kernel defintions, for now adding here */
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#define GMSL_CSI_DT_RAW_12 0x2C
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#define GMSL_CSI_DT_UED_U1 0x30
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#define GMSL_CSI_DT_EMBED 0x12
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#define GMSL_ST_ID_UNUSED 0xFF
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/**
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* Maximum number of data streams (\ref gmsl_stream elements) in a GMSL link
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* (\ref gmsl_link_ctx).
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*/
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#define GMSL_DEV_MAX_NUM_DATA_STREAMS 4
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/**
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* Holds information about a data stream in a GMSL link (\ref gmsl_link_ctx).
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*/
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struct gmsl_stream {
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__u32 st_id_sel;
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__u32 st_data_type;
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__u32 des_pipe;
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};
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/**
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* Holds the configuration of the GMSL links from a sensor to its serializer to
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* its deserializer.
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*/
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struct gmsl_link_ctx {
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__u32 st_vc; /**< Default sensor virtual channel. */
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__u32 dst_vc; /**< Destination virtual channel (user-defined). */
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__u32 src_csi_port; /**< Sensor to serializer CSI port connection. */
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__u32 dst_csi_port; /**< Deserializer to Jetson CSI port connection. */
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__u32 serdes_csi_link; /**< GMSL link between serializer and deserializer
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devices. */
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__u32 num_streams; /**< Number of active streams to be mapped
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from sensor. */
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__u32 num_csi_lanes; /**< Sensor's CSI lane configuration. */
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__u32 csi_mode; /**< Deserializer CSI mode. */
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__u32 ser_reg; /**< Serializer slave address. */
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__u32 sdev_reg; /**< Sensor proxy slave address. */
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__u32 sdev_def; /**< Sensor default slave address. */
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bool serdev_found; /**< Indicates whether the serializer device for
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the specified sensor source was found. Set by
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the serializer driver during setup; used by
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the deserializer driver to choose certain
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configuration settings during setup. */
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struct gmsl_stream streams[GMSL_DEV_MAX_NUM_DATA_STREAMS];
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/*< An array of information about the data streams in the link. */
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struct device *s_dev; /**< Sensor device handle. */
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};
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/** @} */
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#endif /* __GMSL_LINK_H__ */
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