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media: i2c: add Maxim GMSL2/3 deserializer framework
These drivers are meant to be used as a common framework for Maxim GMSL2/3 deserializer. This framework enables support for the following new features across all the chips: * Full Streams API support * .get_frame_desc() * .get_mbus_config() * I2C ATR * automatic GMSL link version negotiation * automatic stream id selection * automatic VC remapping * automatic pixel mode / tunnel mode selection * automatic double mode selection / data padding * logging of internal state and chip status registers via .log_status() * PHY modes * serializer pinctrl * TPG Signed-off-by: Cosmin Tanislav <demonsingur@gmail.com> Tested-by: Martin Hecht <mhecht73@gmail.com> Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
This commit is contained in:
Cosmin Tanislav
Sakari Ailus
parent
1f43ef0eb7
commit
22923bc451
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# SPDX-License-Identifier: GPL-2.0
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max-serdes-objs := max_serdes.o max_ser.o
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max-serdes-objs := max_serdes.o max_ser.o max_des.o
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obj-$(CONFIG_VIDEO_MAXIM_SERDES) += max-serdes.o
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3347
drivers/media/i2c/maxim-serdes/max_des.c
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3347
drivers/media/i2c/maxim-serdes/max_des.c
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drivers/media/i2c/maxim-serdes/max_des.h
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drivers/media/i2c/maxim-serdes/max_des.h
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/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* Copyright (C) 2025 Analog Devices Inc.
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*/
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#ifndef MAX_DES_H
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#define MAX_DES_H
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#include <media/v4l2-mediabus.h>
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#include "max_serdes.h"
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#define MAX_DES_DT_VC(dt, vc) (((vc) & 0x3) << 6 | ((dt) & 0x3f))
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struct max_des_remap {
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u8 from_dt;
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u8 from_vc;
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u8 to_dt;
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u8 to_vc;
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u8 phy;
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};
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struct max_des_link {
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unsigned int index;
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bool enabled;
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enum max_serdes_gmsl_version version;
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struct max_serdes_i2c_xlate ser_xlate;
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struct i2c_adapter *adapter;
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};
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struct max_des_pipe_mode {
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bool dbl8;
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bool dbl10;
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bool dbl12;
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bool dbl8mode;
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bool dbl10mode;
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};
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struct max_des_pipe {
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unsigned int index;
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unsigned int stream_id;
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unsigned int link_id;
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unsigned int phy_id;
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struct max_des_remap *remaps;
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unsigned int num_remaps;
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struct max_serdes_vc_remap *vc_remaps;
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unsigned int num_vc_remaps;
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struct max_des_pipe_mode mode;
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bool enabled;
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};
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struct max_des_phy_mode {
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bool alt_mem_map8;
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bool alt2_mem_map8;
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bool alt_mem_map10;
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bool alt_mem_map12;
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};
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struct max_des_phy {
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unsigned int index;
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u64 link_frequency;
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struct v4l2_mbus_config_mipi_csi2 mipi;
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enum v4l2_mbus_type bus_type;
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struct max_des_phy_mode mode;
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bool enabled;
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};
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struct max_des;
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struct max_des_info {
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unsigned int num_phys;
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unsigned int num_pipes;
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unsigned int num_links;
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unsigned int num_remaps_per_pipe;
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unsigned int versions;
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unsigned int modes;
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bool fix_tx_ids;
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bool use_atr;
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bool needs_single_link_version;
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bool needs_unique_stream_id;
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struct max_serdes_phys_configs phys_configs;
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struct max_serdes_tpg_entries tpg_entries;
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enum max_serdes_gmsl_mode tpg_mode;
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unsigned int tpg_patterns;
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};
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struct max_des_ops {
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#ifdef CONFIG_VIDEO_ADV_DEBUG
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int (*reg_read)(struct max_des *des, unsigned int reg, unsigned int *val);
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int (*reg_write)(struct max_des *des, unsigned int reg, unsigned int val);
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#endif
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int (*log_status)(struct max_des *des);
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int (*log_pipe_status)(struct max_des *des, struct max_des_pipe *pipe);
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int (*log_phy_status)(struct max_des *des, struct max_des_phy *phy);
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int (*set_enable)(struct max_des *des, bool enable);
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int (*set_tpg)(struct max_des *des, const struct max_serdes_tpg_entry *entry);
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int (*init)(struct max_des *des);
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int (*init_phy)(struct max_des *des, struct max_des_phy *phy);
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int (*set_phy_mode)(struct max_des *des, struct max_des_phy *phy,
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struct max_des_phy_mode *mode);
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int (*set_phy_enable)(struct max_des *des, struct max_des_phy *phy,
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bool active);
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int (*set_pipe_stream_id)(struct max_des *des, struct max_des_pipe *pipe,
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unsigned int stream_id);
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int (*set_pipe_link)(struct max_des *des, struct max_des_pipe *pipe,
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struct max_des_link *link);
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int (*set_pipe_phy)(struct max_des *des, struct max_des_pipe *pipe,
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struct max_des_phy *phy);
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int (*set_pipe_tunnel_phy)(struct max_des *des, struct max_des_pipe *pipe,
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struct max_des_phy *phy);
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int (*set_pipe_enable)(struct max_des *des, struct max_des_pipe *pipe,
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bool enable);
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int (*set_pipe_remap)(struct max_des *des, struct max_des_pipe *pipe,
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unsigned int i, struct max_des_remap *remap);
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int (*set_pipe_remaps_enable)(struct max_des *des, struct max_des_pipe *pipe,
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unsigned int mask);
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int (*set_pipe_vc_remap)(struct max_des *des, struct max_des_pipe *pipe,
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unsigned int i, struct max_serdes_vc_remap *vc_remap);
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int (*set_pipe_vc_remaps_enable)(struct max_des *des, struct max_des_pipe *pipe,
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unsigned int mask);
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int (*set_pipe_mode)(struct max_des *des, struct max_des_pipe *pipe,
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struct max_des_pipe_mode *mode);
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int (*set_pipe_tunnel_enable)(struct max_des *des, struct max_des_pipe *pipe,
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bool enable);
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int (*init_link)(struct max_des *des, struct max_des_link *link);
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int (*select_links)(struct max_des *des, unsigned int mask);
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int (*set_link_version)(struct max_des *des, struct max_des_link *link,
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enum max_serdes_gmsl_version version);
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};
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struct max_des_priv;
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struct max_des {
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struct max_des_priv *priv;
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const struct max_des_info *info;
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const struct max_des_ops *ops;
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struct max_des_phy *phys;
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struct max_des_pipe *pipes;
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struct max_des_link *links;
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const struct max_serdes_tpg_entry *tpg_entry;
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enum max_serdes_tpg_pattern tpg_pattern;
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unsigned int phys_config;
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enum max_serdes_gmsl_mode mode;
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bool active;
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};
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int max_des_probe(struct i2c_client *client, struct max_des *des);
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int max_des_remove(struct max_des *des);
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int max_des_phy_hw_data_lanes(struct max_des *des, struct max_des_phy *phy);
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#endif // MAX_DES_H
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