// SPDX-License-Identifier: GPL-2.0+ /* * Nvidia line card driver * * Copyright (C) 2020 Nvidia Technologies Ltd. */ #include <linux/device.h> #include <linux/i2c.h> #include <linux/module.h> #include <linux/platform_data/mlxcpld.h> #include <linux/platform_data/mlxreg.h> #include <linux/platform_device.h> #include <linux/regmap.h> /* I2C bus IO offsets */ #define MLXREG_LC_REG_CPLD1_VER_OFFSET … #define MLXREG_LC_REG_FPGA1_VER_OFFSET … #define MLXREG_LC_REG_CPLD1_PN_OFFSET … #define MLXREG_LC_REG_FPGA1_PN_OFFSET … #define MLXREG_LC_REG_RESET_CAUSE_OFFSET … #define MLXREG_LC_REG_LED1_OFFSET … #define MLXREG_LC_REG_GP0_OFFSET … #define MLXREG_LC_REG_FIELD_UPGRADE … #define MLXREG_LC_CHANNEL_I2C_REG … #define MLXREG_LC_REG_CPLD1_MVER_OFFSET … #define MLXREG_LC_REG_FPGA1_MVER_OFFSET … #define MLXREG_LC_REG_MAX_POWER_OFFSET … #define MLXREG_LC_REG_CONFIG_OFFSET … #define MLXREG_LC_REG_MAX … /** * enum mlxreg_lc_type - line cards types * * @MLXREG_LC_SN4800_C16: 100GbE line card with 16 QSFP28 ports; */ enum mlxreg_lc_type { … }; /** * enum mlxreg_lc_state - line cards state * * @MLXREG_LC_INITIALIZED: line card is initialized; * @MLXREG_LC_POWERED: line card is powered; * @MLXREG_LC_SYNCED: line card is synchronized between hardware and firmware; */ enum mlxreg_lc_state { … }; #define MLXREG_LC_CONFIGURED … /* mlxreg_lc - device private data * @dev: platform device; * @lock: line card lock; * @par_regmap: parent device regmap handle; * @data: pltaform core data; * @io_data: register access platform data; * @led_data: LED platform data ; * @mux_data: MUX platform data; * @led: LED device; * @io_regs: register access device; * @mux_brdinfo: mux configuration; * @mux: mux devices; * @aux_devs: I2C devices feeding by auxiliary power; * @aux_devs_num: number of I2C devices feeding by auxiliary power; * @main_devs: I2C devices feeding by main power; * @main_devs_num: number of I2C devices feeding by main power; * @state: line card state; */ struct mlxreg_lc { … }; static bool mlxreg_lc_writeable_reg(struct device *dev, unsigned int reg) { … } static bool mlxreg_lc_readable_reg(struct device *dev, unsigned int reg) { … } static bool mlxreg_lc_volatile_reg(struct device *dev, unsigned int reg) { … } static const struct reg_default mlxreg_lc_regmap_default[] = …; /* Configuration for the register map of a device with 2 bytes address space. */ static const struct regmap_config mlxreg_lc_regmap_conf = …; /* Default channels vector. * It contains only the channels, which physically connected to the devices, * empty channels are skipped. */ static int mlxreg_lc_chan[] = …; /* Defaul mux configuration. */ static struct mlxcpld_mux_plat_data mlxreg_lc_mux_data[] = …; /* Defaul mux board info. */ static struct i2c_board_info mlxreg_lc_mux_brdinfo = …; /* Line card default auxiliary power static devices. */ static struct i2c_board_info mlxreg_lc_aux_pwr_devices[] = …; /* Line card default auxiliary power board info. */ static struct mlxreg_hotplug_device mlxreg_lc_aux_pwr_brdinfo[] = …; /* Line card default main power static devices. */ static struct i2c_board_info mlxreg_lc_main_pwr_devices[] = …; /* Line card default main power board info. */ static struct mlxreg_hotplug_device mlxreg_lc_main_pwr_brdinfo[] = …; /* LED default data. */ static struct mlxreg_core_data mlxreg_lc_led_data[] = …; static struct mlxreg_core_platform_data mlxreg_lc_led = …; /* Default register access data. */ static struct mlxreg_core_data mlxreg_lc_io_data[] = …; static struct mlxreg_core_platform_data mlxreg_lc_regs_io = …; static int mlxreg_lc_create_static_devices(struct mlxreg_lc *mlxreg_lc, struct mlxreg_hotplug_device *devs, int size) { … } static void mlxreg_lc_destroy_static_devices(struct mlxreg_lc *mlxreg_lc, struct mlxreg_hotplug_device *devs, int size) { … } static int mlxreg_lc_power_on_off(struct mlxreg_lc *mlxreg_lc, u8 action) { … } static int mlxreg_lc_enable_disable(struct mlxreg_lc *mlxreg_lc, bool action) { … } static int mlxreg_lc_sn4800_c16_config_init(struct mlxreg_lc *mlxreg_lc, void *regmap, struct mlxreg_core_data *data) { … } static void mlxreg_lc_state_update(struct mlxreg_lc *mlxreg_lc, enum mlxreg_lc_state state, u8 action) { … } static void mlxreg_lc_state_update_locked(struct mlxreg_lc *mlxreg_lc, enum mlxreg_lc_state state, u8 action) { … } /* * Callback is to be called from mlxreg-hotplug driver to notify about line card about received * event. */ static int mlxreg_lc_event_handler(void *handle, enum mlxreg_hotplug_kind kind, u8 action) { … } /* * Callback is to be called from i2c-mux-mlxcpld driver to indicate that all adapter devices has * been created. */ static int mlxreg_lc_completion_notify(void *handle, struct i2c_adapter *parent, struct i2c_adapter *adapters[]) { … } static int mlxreg_lc_config_init(struct mlxreg_lc *mlxreg_lc, void *regmap, struct mlxreg_core_data *data) { … } static void mlxreg_lc_config_exit(struct mlxreg_lc *mlxreg_lc) { … } static int mlxreg_lc_probe(struct platform_device *pdev) { … } static void mlxreg_lc_remove(struct platform_device *pdev) { … } static struct platform_driver mlxreg_lc_driver = …; module_platform_driver(…) …; MODULE_AUTHOR(…) …; MODULE_DESCRIPTION(…) …; MODULE_LICENSE(…) …; MODULE_ALIAS(…) …;
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