// SPDX-License-Identifier: GPL-2.0+ /* * Nvidia sn2201 driver * * Copyright (C) 2022 Nvidia Technologies Ltd. */ #include <linux/device.h> #include <linux/i2c.h> #include <linux/interrupt.h> #include <linux/irq.h> #include <linux/gpio.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> /* SN2201 CPLD register offset. */ #define NVSW_SN2201_CPLD_LPC_I2C_BASE_ADRR … #define NVSW_SN2201_CPLD_LPC_IO_RANGE … #define NVSW_SN2201_HW_VER_ID_OFFSET … #define NVSW_SN2201_BOARD_ID_OFFSET … #define NVSW_SN2201_CPLD_VER_OFFSET … #define NVSW_SN2201_CPLD_MVER_OFFSET … #define NVSW_SN2201_CPLD_ID_OFFSET … #define NVSW_SN2201_CPLD_PN_OFFSET … #define NVSW_SN2201_CPLD_PN1_OFFSET … #define NVSW_SN2201_PSU_CTRL_OFFSET … #define NVSW_SN2201_QSFP28_STATUS_OFFSET … #define NVSW_SN2201_QSFP28_INT_STATUS_OFFSET … #define NVSW_SN2201_QSFP28_LP_STATUS_OFFSET … #define NVSW_SN2201_QSFP28_RST_STATUS_OFFSET … #define NVSW_SN2201_SYS_STATUS_OFFSET … #define NVSW_SN2201_FRONT_SYS_LED_CTRL_OFFSET … #define NVSW_SN2201_FRONT_PSU_LED_CTRL_OFFSET … #define NVSW_SN2201_FRONT_UID_LED_CTRL_OFFSET … #define NVSW_SN2201_QSFP28_LED_TEST_STATUS_OFFSET … #define NVSW_SN2201_SYS_RST_STATUS_OFFSET … #define NVSW_SN2201_SYS_INT_STATUS_OFFSET … #define NVSW_SN2201_SYS_INT_MASK_OFFSET … #define NVSW_SN2201_ASIC_STATUS_OFFSET … #define NVSW_SN2201_ASIC_EVENT_OFFSET … #define NVSW_SN2201_ASIC_MAKS_OFFSET … #define NVSW_SN2201_THML_STATUS_OFFSET … #define NVSW_SN2201_THML_EVENT_OFFSET … #define NVSW_SN2201_THML_MASK_OFFSET … #define NVSW_SN2201_PS_ALT_STATUS_OFFSET … #define NVSW_SN2201_PS_ALT_EVENT_OFFSET … #define NVSW_SN2201_PS_ALT_MASK_OFFSET … #define NVSW_SN2201_PS_PRSNT_STATUS_OFFSET … #define NVSW_SN2201_PS_PRSNT_EVENT_OFFSET … #define NVSW_SN2201_PS_PRSNT_MASK_OFFSET … #define NVSW_SN2201_PS_DC_OK_STATUS_OFFSET … #define NVSW_SN2201_PS_DC_OK_EVENT_OFFSET … #define NVSW_SN2201_PS_DC_OK_MASK_OFFSET … #define NVSW_SN2201_RST_CAUSE1_OFFSET … #define NVSW_SN2201_RST_CAUSE2_OFFSET … #define NVSW_SN2201_RST_SW_CTRL_OFFSET … #define NVSW_SN2201_FAN_PRSNT_STATUS_OFFSET … #define NVSW_SN2201_FAN_PRSNT_EVENT_OFFSET … #define NVSW_SN2201_FAN_PRSNT_MASK_OFFSET … #define NVSW_SN2201_WD_TMR_OFFSET_LSB … #define NVSW_SN2201_WD_TMR_OFFSET_MSB … #define NVSW_SN2201_WD_ACT_OFFSET … #define NVSW_SN2201_FAN_LED1_CTRL_OFFSET … #define NVSW_SN2201_FAN_LED2_CTRL_OFFSET … #define NVSW_SN2201_REG_MAX … /* Number of physical I2C busses. */ #define NVSW_SN2201_PHY_I2C_BUS_NUM … /* Number of main mux channels. */ #define NVSW_SN2201_MAIN_MUX_CHNL_NUM … #define NVSW_SN2201_MAIN_NR … #define NVSW_SN2201_MAIN_MUX_NR … #define NVSW_SN2201_MAIN_MUX_DEFER_NR … #define NVSW_SN2201_MAIN_MUX_CH0_NR … #define NVSW_SN2201_MAIN_MUX_CH1_NR … #define NVSW_SN2201_MAIN_MUX_CH2_NR … #define NVSW_SN2201_MAIN_MUX_CH3_NR … #define NVSW_SN2201_MAIN_MUX_CH5_NR … #define NVSW_SN2201_MAIN_MUX_CH6_NR … #define NVSW_SN2201_MAIN_MUX_CH7_NR … #define NVSW_SN2201_2ND_MUX_CH0_NR … #define NVSW_SN2201_2ND_MUX_CH1_NR … #define NVSW_SN2201_2ND_MUX_CH2_NR … #define NVSW_SN2201_2ND_MUX_CH3_NR … #define NVSW_SN2201_CPLD_NR … #define NVSW_SN2201_NR_NONE … /* Masks for aggregation, PSU presence and power, ASIC events * in CPLD related registers. */ #define NVSW_SN2201_CPLD_AGGR_ASIC_MASK_DEF … #define NVSW_SN2201_CPLD_AGGR_PSU_MASK_DEF … #define NVSW_SN2201_CPLD_AGGR_PWR_MASK_DEF … #define NVSW_SN2201_CPLD_AGGR_FAN_MASK_DEF … #define NVSW_SN2201_CPLD_AGGR_MASK_DEF … #define NVSW_SN2201_CPLD_ASIC_MASK … #define NVSW_SN2201_CPLD_PSU_MASK … #define NVSW_SN2201_CPLD_PWR_MASK … #define NVSW_SN2201_CPLD_FAN_MASK … #define NVSW_SN2201_CPLD_SYSIRQ … #define NVSW_SN2201_LPC_SYSIRQ … #define NVSW_SN2201_CPLD_I2CADDR … #define NVSW_SN2201_WD_DFLT_TIMEOUT … /* nvsw_sn2201 - device private data * @dev: platform device; * @io_data: register access platform data; * @led_data: LED platform data; * @hotplug_data: hotplug platform data; * @i2c_data: I2C controller platform data; * @led: LED device; * @io_regs: register access device; * @pdev_hotplug: hotplug device; * @sn2201_devs: I2C devices for sn2201 devices; * @sn2201_devs_num: number of I2C devices for sn2201 device; * @main_mux_devs: I2C devices for main mux; * @main_mux_devs_num: number of I2C devices for main mux; * @cpld_devs: I2C devices for cpld; * @cpld_devs_num: number of I2C devices for cpld; * @main_mux_deferred_nr: I2C adapter number must be exist prior creating devices execution; */ struct nvsw_sn2201 { … }; static bool nvsw_sn2201_writeable_reg(struct device *dev, unsigned int reg) { … } static bool nvsw_sn2201_readable_reg(struct device *dev, unsigned int reg) { … } static bool nvsw_sn2201_volatile_reg(struct device *dev, unsigned int reg) { … } static const struct reg_default nvsw_sn2201_regmap_default[] = …; /* Configuration for the register map of a device with 1 bytes address space. */ static const struct regmap_config nvsw_sn2201_regmap_conf = …; /* Regions for LPC I2C controller and LPC base register space. */ static const struct resource nvsw_sn2201_lpc_io_resources[] = …; static struct resource nvsw_sn2201_cpld_res[] = …; static struct resource nvsw_sn2201_lpc_res[] = …; /* SN2201 I2C platform data. */ static struct mlxreg_core_hotplug_platform_data nvsw_sn2201_i2c_data = …; /* SN2201 CPLD device. */ static struct i2c_board_info nvsw_sn2201_cpld_devices[] = …; /* SN2201 CPLD board info. */ static struct mlxreg_hotplug_device nvsw_sn2201_cpld_brdinfo[] = …; /* SN2201 main mux device. */ static struct i2c_board_info nvsw_sn2201_main_mux_devices[] = …; /* SN2201 main mux board info. */ static struct mlxreg_hotplug_device nvsw_sn2201_main_mux_brdinfo[] = …; /* SN2201 power devices. */ static struct i2c_board_info nvsw_sn2201_pwr_devices[] = …; /* SN2201 fan devices. */ static struct i2c_board_info nvsw_sn2201_fan_devices[] = …; /* SN2201 hotplug default data. */ static struct mlxreg_core_data nvsw_sn2201_psu_items_data[] = …; static struct mlxreg_core_data nvsw_sn2201_pwr_items_data[] = …; static struct mlxreg_core_data nvsw_sn2201_fan_items_data[] = …; static struct mlxreg_core_data nvsw_sn2201_sys_items_data[] = …; static struct mlxreg_core_item nvsw_sn2201_items[] = …; static struct mlxreg_core_hotplug_platform_data nvsw_sn2201_hotplug = …; /* SN2201 static devices. */ static struct i2c_board_info nvsw_sn2201_static_devices[] = …; /* SN2201 default static board info. */ static struct mlxreg_hotplug_device nvsw_sn2201_static_brdinfo[] = …; /* LED default data. */ static struct mlxreg_core_data nvsw_sn2201_led_data[] = …; static struct mlxreg_core_platform_data nvsw_sn2201_led = …; /* Default register access data. */ static struct mlxreg_core_data nvsw_sn2201_io_data[] = …; static struct mlxreg_core_platform_data nvsw_sn2201_regs_io = …; /* Default watchdog data. */ static struct mlxreg_core_data nvsw_sn2201_wd_data[] = …; static struct mlxreg_core_platform_data nvsw_sn2201_wd = …; static int nvsw_sn2201_create_static_devices(struct nvsw_sn2201 *nvsw_sn2201, struct mlxreg_hotplug_device *devs, int size) { … } static void nvsw_sn2201_destroy_static_devices(struct nvsw_sn2201 *nvsw_sn2201, struct mlxreg_hotplug_device *devs, int size) { … } static int nvsw_sn2201_config_post_init(struct nvsw_sn2201 *nvsw_sn2201) { … } static int nvsw_sn2201_config_init(struct nvsw_sn2201 *nvsw_sn2201, void *regmap) { … } static void nvsw_sn2201_config_exit(struct nvsw_sn2201 *nvsw_sn2201) { … } /* * Initialization is divided into two parts: * - I2C main bus init. * - Mux creation and attaching devices to the mux, * which assumes that the main bus is already created. * This separation is required for synchronization between these two parts. * Completion notify callback is used to make this flow synchronized. */ static int nvsw_sn2201_i2c_completion_notify(void *handle, int id) { … } static int nvsw_sn2201_config_pre_init(struct nvsw_sn2201 *nvsw_sn2201) { … } static int nvsw_sn2201_probe(struct platform_device *pdev) { … } static void nvsw_sn2201_remove(struct platform_device *pdev) { … } static const struct acpi_device_id nvsw_sn2201_acpi_ids[] = …; MODULE_DEVICE_TABLE(acpi, nvsw_sn2201_acpi_ids); static struct platform_driver nvsw_sn2201_driver = …; module_platform_driver(…) …; MODULE_AUTHOR(…) …; MODULE_DESCRIPTION(…) …; MODULE_LICENSE(…) …; MODULE_ALIAS(…) …;
Codebase Browser
linux