diff options
Diffstat (limited to 'drivers/platform/mellanox/nvsw-sn2201.c')
| -rw-r--r-- | drivers/platform/mellanox/nvsw-sn2201.c | 1263 |
1 files changed, 1263 insertions, 0 deletions
diff --git a/drivers/platform/mellanox/nvsw-sn2201.c b/drivers/platform/mellanox/nvsw-sn2201.c new file mode 100644 index 000000000..7b9c107c1 --- /dev/null +++ b/drivers/platform/mellanox/nvsw-sn2201.c @@ -0,0 +1,1263 @@ +// 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 0x2000 +#define NVSW_SN2201_CPLD_LPC_IO_RANGE 0x100 +#define NVSW_SN2201_HW_VER_ID_OFFSET 0x00 +#define NVSW_SN2201_BOARD_ID_OFFSET 0x01 +#define NVSW_SN2201_CPLD_VER_OFFSET 0x02 +#define NVSW_SN2201_CPLD_MVER_OFFSET 0x03 +#define NVSW_SN2201_CPLD_ID_OFFSET 0x04 +#define NVSW_SN2201_CPLD_PN_OFFSET 0x05 +#define NVSW_SN2201_CPLD_PN1_OFFSET 0x06 +#define NVSW_SN2201_PSU_CTRL_OFFSET 0x0a +#define NVSW_SN2201_QSFP28_STATUS_OFFSET 0x0b +#define NVSW_SN2201_QSFP28_INT_STATUS_OFFSET 0x0c +#define NVSW_SN2201_QSFP28_LP_STATUS_OFFSET 0x0d +#define NVSW_SN2201_QSFP28_RST_STATUS_OFFSET 0x0e +#define NVSW_SN2201_SYS_STATUS_OFFSET 0x0f +#define NVSW_SN2201_FRONT_SYS_LED_CTRL_OFFSET 0x10 +#define NVSW_SN2201_FRONT_PSU_LED_CTRL_OFFSET 0x12 +#define NVSW_SN2201_FRONT_UID_LED_CTRL_OFFSET 0x13 +#define NVSW_SN2201_QSFP28_LED_TEST_STATUS_OFFSET 0x14 +#define NVSW_SN2201_SYS_RST_STATUS_OFFSET 0x15 +#define NVSW_SN2201_SYS_INT_STATUS_OFFSET 0x21 +#define NVSW_SN2201_SYS_INT_MASK_OFFSET 0x22 +#define NVSW_SN2201_ASIC_STATUS_OFFSET 0x24 +#define NVSW_SN2201_ASIC_EVENT_OFFSET 0x25 +#define NVSW_SN2201_ASIC_MAKS_OFFSET 0x26 +#define NVSW_SN2201_THML_STATUS_OFFSET 0x27 +#define NVSW_SN2201_THML_EVENT_OFFSET 0x28 +#define NVSW_SN2201_THML_MASK_OFFSET 0x29 +#define NVSW_SN2201_PS_ALT_STATUS_OFFSET 0x2a +#define NVSW_SN2201_PS_ALT_EVENT_OFFSET 0x2b +#define NVSW_SN2201_PS_ALT_MASK_OFFSET 0x2c +#define NVSW_SN2201_PS_PRSNT_STATUS_OFFSET 0x30 +#define NVSW_SN2201_PS_PRSNT_EVENT_OFFSET 0x31 +#define NVSW_SN2201_PS_PRSNT_MASK_OFFSET 0x32 +#define NVSW_SN2201_PS_DC_OK_STATUS_OFFSET 0x33 +#define NVSW_SN2201_PS_DC_OK_EVENT_OFFSET 0x34 +#define NVSW_SN2201_PS_DC_OK_MASK_OFFSET 0x35 +#define NVSW_SN2201_RST_CAUSE1_OFFSET 0x36 +#define NVSW_SN2201_RST_CAUSE2_OFFSET 0x37 +#define NVSW_SN2201_RST_SW_CTRL_OFFSET 0x38 +#define NVSW_SN2201_FAN_PRSNT_STATUS_OFFSET 0x3a +#define NVSW_SN2201_FAN_PRSNT_EVENT_OFFSET 0x3b +#define NVSW_SN2201_FAN_PRSNT_MASK_OFFSET 0x3c +#define NVSW_SN2201_WD_TMR_OFFSET_LSB 0x40 +#define NVSW_SN2201_WD_TMR_OFFSET_MSB 0x41 +#define NVSW_SN2201_WD_ACT_OFFSET 0x42 +#define NVSW_SN2201_FAN_LED1_CTRL_OFFSET 0x50 +#define NVSW_SN2201_FAN_LED2_CTRL_OFFSET 0x51 +#define NVSW_SN2201_REG_MAX 0x52 + +/* Number of physical I2C busses. */ +#define NVSW_SN2201_PHY_I2C_BUS_NUM 2 +/* Number of main mux channels. */ +#define NVSW_SN2201_MAIN_MUX_CHNL_NUM 8 + +#define NVSW_SN2201_MAIN_NR 0 +#define NVSW_SN2201_MAIN_MUX_NR 1 +#define NVSW_SN2201_MAIN_MUX_DEFER_NR (NVSW_SN2201_PHY_I2C_BUS_NUM + \ + NVSW_SN2201_MAIN_MUX_CHNL_NUM - 1) + +#define NVSW_SN2201_MAIN_MUX_CH0_NR NVSW_SN2201_PHY_I2C_BUS_NUM +#define NVSW_SN2201_MAIN_MUX_CH1_NR (NVSW_SN2201_MAIN_MUX_CH0_NR + 1) +#define NVSW_SN2201_MAIN_MUX_CH2_NR (NVSW_SN2201_MAIN_MUX_CH0_NR + 2) +#define NVSW_SN2201_MAIN_MUX_CH3_NR (NVSW_SN2201_MAIN_MUX_CH0_NR + 3) +#define NVSW_SN2201_MAIN_MUX_CH5_NR (NVSW_SN2201_MAIN_MUX_CH0_NR + 5) +#define NVSW_SN2201_MAIN_MUX_CH6_NR (NVSW_SN2201_MAIN_MUX_CH0_NR + 6) +#define NVSW_SN2201_MAIN_MUX_CH7_NR (NVSW_SN2201_MAIN_MUX_CH0_NR + 7) + +#define NVSW_SN2201_CPLD_NR NVSW_SN2201_MAIN_MUX_CH0_NR +#define NVSW_SN2201_NR_NONE -1 + +/* Masks for aggregation, PSU presence and power, ASIC events + * in CPLD related registers. + */ +#define NVSW_SN2201_CPLD_AGGR_ASIC_MASK_DEF 0xe0 +#define NVSW_SN2201_CPLD_AGGR_PSU_MASK_DEF 0x04 +#define NVSW_SN2201_CPLD_AGGR_PWR_MASK_DEF 0x02 +#define NVSW_SN2201_CPLD_AGGR_FAN_MASK_DEF 0x10 +#define NVSW_SN2201_CPLD_AGGR_MASK_DEF \ + (NVSW_SN2201_CPLD_AGGR_ASIC_MASK_DEF \ + | NVSW_SN2201_CPLD_AGGR_PSU_MASK_DEF \ + | NVSW_SN2201_CPLD_AGGR_PWR_MASK_DEF \ + | NVSW_SN2201_CPLD_AGGR_FAN_MASK_DEF) + +#define NVSW_SN2201_CPLD_ASIC_MASK GENMASK(3, 1) +#define NVSW_SN2201_CPLD_PSU_MASK GENMASK(1, 0) +#define NVSW_SN2201_CPLD_PWR_MASK GENMASK(1, 0) +#define NVSW_SN2201_CPLD_FAN_MASK GENMASK(3, 0) + +#define NVSW_SN2201_CPLD_SYSIRQ 26 +#define NVSW_SN2201_LPC_SYSIRQ 28 +#define NVSW_SN2201_CPLD_I2CADDR 0x41 + +#define NVSW_SN2201_WD_DFLT_TIMEOUT 600 + +/* 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 { + struct device *dev; + struct mlxreg_core_platform_data *io_data; + struct mlxreg_core_platform_data *led_data; + struct mlxreg_core_platform_data *wd_data; + struct mlxreg_core_hotplug_platform_data *hotplug_data; + struct mlxreg_core_hotplug_platform_data *i2c_data; + struct platform_device *led; + struct platform_device *wd; + struct platform_device *io_regs; + struct platform_device *pdev_hotplug; + struct platform_device *pdev_i2c; + struct mlxreg_hotplug_device *sn2201_devs; + int sn2201_devs_num; + struct mlxreg_hotplug_device *main_mux_devs; + int main_mux_devs_num; + struct mlxreg_hotplug_device *cpld_devs; + int cpld_devs_num; + int main_mux_deferred_nr; +}; + +static bool nvsw_sn2201_writeable_reg(struct device *dev, unsigned int reg) +{ + switch (reg) { + case NVSW_SN2201_PSU_CTRL_OFFSET: + case NVSW_SN2201_QSFP28_LP_STATUS_OFFSET: + case NVSW_SN2201_QSFP28_RST_STATUS_OFFSET: + case NVSW_SN2201_FRONT_SYS_LED_CTRL_OFFSET: + case NVSW_SN2201_FRONT_PSU_LED_CTRL_OFFSET: + case NVSW_SN2201_FRONT_UID_LED_CTRL_OFFSET: + case NVSW_SN2201_QSFP28_LED_TEST_STATUS_OFFSET: + case NVSW_SN2201_SYS_RST_STATUS_OFFSET: + case NVSW_SN2201_SYS_INT_MASK_OFFSET: + case NVSW_SN2201_ASIC_EVENT_OFFSET: + case NVSW_SN2201_ASIC_MAKS_OFFSET: + case NVSW_SN2201_THML_EVENT_OFFSET: + case NVSW_SN2201_THML_MASK_OFFSET: + case NVSW_SN2201_PS_ALT_EVENT_OFFSET: + case NVSW_SN2201_PS_ALT_MASK_OFFSET: + case NVSW_SN2201_PS_PRSNT_EVENT_OFFSET: + case NVSW_SN2201_PS_PRSNT_MASK_OFFSET: + case NVSW_SN2201_PS_DC_OK_EVENT_OFFSET: + case NVSW_SN2201_PS_DC_OK_MASK_OFFSET: + case NVSW_SN2201_RST_SW_CTRL_OFFSET: + case NVSW_SN2201_FAN_PRSNT_EVENT_OFFSET: + case NVSW_SN2201_FAN_PRSNT_MASK_OFFSET: + case NVSW_SN2201_WD_TMR_OFFSET_LSB: + case NVSW_SN2201_WD_TMR_OFFSET_MSB: + case NVSW_SN2201_WD_ACT_OFFSET: + case NVSW_SN2201_FAN_LED1_CTRL_OFFSET: + case NVSW_SN2201_FAN_LED2_CTRL_OFFSET: + return true; + } + return false; +} + +static bool nvsw_sn2201_readable_reg(struct device *dev, unsigned int reg) +{ + switch (reg) { + case NVSW_SN2201_HW_VER_ID_OFFSET: + case NVSW_SN2201_BOARD_ID_OFFSET: + case NVSW_SN2201_CPLD_VER_OFFSET: + case NVSW_SN2201_CPLD_MVER_OFFSET: + case NVSW_SN2201_CPLD_ID_OFFSET: + case NVSW_SN2201_CPLD_PN_OFFSET: + case NVSW_SN2201_CPLD_PN1_OFFSET: + case NVSW_SN2201_PSU_CTRL_OFFSET: + case NVSW_SN2201_QSFP28_STATUS_OFFSET: + case NVSW_SN2201_QSFP28_INT_STATUS_OFFSET: + case NVSW_SN2201_QSFP28_LP_STATUS_OFFSET: + case NVSW_SN2201_QSFP28_RST_STATUS_OFFSET: + case NVSW_SN2201_SYS_STATUS_OFFSET: + case NVSW_SN2201_FRONT_SYS_LED_CTRL_OFFSET: + case NVSW_SN2201_FRONT_PSU_LED_CTRL_OFFSET: + case NVSW_SN2201_FRONT_UID_LED_CTRL_OFFSET: + case NVSW_SN2201_QSFP28_LED_TEST_STATUS_OFFSET: + case NVSW_SN2201_SYS_RST_STATUS_OFFSET: + case NVSW_SN2201_RST_CAUSE1_OFFSET: + case NVSW_SN2201_RST_CAUSE2_OFFSET: + case NVSW_SN2201_SYS_INT_STATUS_OFFSET: + case NVSW_SN2201_SYS_INT_MASK_OFFSET: + case NVSW_SN2201_ASIC_STATUS_OFFSET: + case NVSW_SN2201_ASIC_EVENT_OFFSET: + case NVSW_SN2201_ASIC_MAKS_OFFSET: + case NVSW_SN2201_THML_STATUS_OFFSET: + case NVSW_SN2201_THML_EVENT_OFFSET: + case NVSW_SN2201_THML_MASK_OFFSET: + case NVSW_SN2201_PS_ALT_STATUS_OFFSET: + case NVSW_SN2201_PS_ALT_EVENT_OFFSET: + case NVSW_SN2201_PS_ALT_MASK_OFFSET: + case NVSW_SN2201_PS_PRSNT_STATUS_OFFSET: + case NVSW_SN2201_PS_PRSNT_EVENT_OFFSET: + case NVSW_SN2201_PS_PRSNT_MASK_OFFSET: + case NVSW_SN2201_PS_DC_OK_STATUS_OFFSET: + case NVSW_SN2201_PS_DC_OK_EVENT_OFFSET: + case NVSW_SN2201_PS_DC_OK_MASK_OFFSET: + case NVSW_SN2201_RST_SW_CTRL_OFFSET: + case NVSW_SN2201_FAN_PRSNT_STATUS_OFFSET: + case NVSW_SN2201_FAN_PRSNT_EVENT_OFFSET: + case NVSW_SN2201_FAN_PRSNT_MASK_OFFSET: + case NVSW_SN2201_WD_TMR_OFFSET_LSB: + case NVSW_SN2201_WD_TMR_OFFSET_MSB: + case NVSW_SN2201_WD_ACT_OFFSET: + case NVSW_SN2201_FAN_LED1_CTRL_OFFSET: + case NVSW_SN2201_FAN_LED2_CTRL_OFFSET: + return true; + } + return false; +} + +static bool nvsw_sn2201_volatile_reg(struct device *dev, unsigned int reg) +{ + switch (reg) { + case NVSW_SN2201_HW_VER_ID_OFFSET: + case NVSW_SN2201_BOARD_ID_OFFSET: + case NVSW_SN2201_CPLD_VER_OFFSET: + case NVSW_SN2201_CPLD_MVER_OFFSET: + case NVSW_SN2201_CPLD_ID_OFFSET: + case NVSW_SN2201_CPLD_PN_OFFSET: + case NVSW_SN2201_CPLD_PN1_OFFSET: + case NVSW_SN2201_PSU_CTRL_OFFSET: + case NVSW_SN2201_QSFP28_STATUS_OFFSET: + case NVSW_SN2201_QSFP28_INT_STATUS_OFFSET: + case NVSW_SN2201_QSFP28_LP_STATUS_OFFSET: + case NVSW_SN2201_QSFP28_RST_STATUS_OFFSET: + case NVSW_SN2201_SYS_STATUS_OFFSET: + case NVSW_SN2201_FRONT_SYS_LED_CTRL_OFFSET: + case NVSW_SN2201_FRONT_PSU_LED_CTRL_OFFSET: + case NVSW_SN2201_FRONT_UID_LED_CTRL_OFFSET: + case NVSW_SN2201_QSFP28_LED_TEST_STATUS_OFFSET: + case NVSW_SN2201_SYS_RST_STATUS_OFFSET: + case NVSW_SN2201_RST_CAUSE1_OFFSET: + case NVSW_SN2201_RST_CAUSE2_OFFSET: + case NVSW_SN2201_SYS_INT_STATUS_OFFSET: + case NVSW_SN2201_SYS_INT_MASK_OFFSET: + case NVSW_SN2201_ASIC_STATUS_OFFSET: + case NVSW_SN2201_ASIC_EVENT_OFFSET: + case NVSW_SN2201_ASIC_MAKS_OFFSET: + case NVSW_SN2201_THML_STATUS_OFFSET: + case NVSW_SN2201_THML_EVENT_OFFSET: + case NVSW_SN2201_THML_MASK_OFFSET: + case NVSW_SN2201_PS_ALT_STATUS_OFFSET: + case NVSW_SN2201_PS_ALT_EVENT_OFFSET: + case NVSW_SN2201_PS_ALT_MASK_OFFSET: + case NVSW_SN2201_PS_PRSNT_STATUS_OFFSET: + case NVSW_SN2201_PS_PRSNT_EVENT_OFFSET: + case NVSW_SN2201_PS_PRSNT_MASK_OFFSET: + case NVSW_SN2201_PS_DC_OK_STATUS_OFFSET: + case NVSW_SN2201_PS_DC_OK_EVENT_OFFSET: + case NVSW_SN2201_PS_DC_OK_MASK_OFFSET: + case NVSW_SN2201_RST_SW_CTRL_OFFSET: + case NVSW_SN2201_FAN_PRSNT_STATUS_OFFSET: + case NVSW_SN2201_FAN_PRSNT_EVENT_OFFSET: + case NVSW_SN2201_FAN_PRSNT_MASK_OFFSET: + case NVSW_SN2201_WD_TMR_OFFSET_LSB: + case NVSW_SN2201_WD_TMR_OFFSET_MSB: + case NVSW_SN2201_FAN_LED1_CTRL_OFFSET: + case NVSW_SN2201_FAN_LED2_CTRL_OFFSET: + return true; + } + return false; +} + +static const struct reg_default nvsw_sn2201_regmap_default[] = { + { NVSW_SN2201_QSFP28_LED_TEST_STATUS_OFFSET, 0x00 }, + { NVSW_SN2201_WD_ACT_OFFSET, 0x00 }, +}; + +/* Configuration for the register map of a device with 1 bytes address space. */ +static const struct regmap_config nvsw_sn2201_regmap_conf = { + .reg_bits = 8, + .val_bits = 8, + .max_register = NVSW_SN2201_REG_MAX, + .cache_type = REGCACHE_FLAT, + .writeable_reg = nvsw_sn2201_writeable_reg, + .readable_reg = nvsw_sn2201_readable_reg, + .volatile_reg = nvsw_sn2201_volatile_reg, + .reg_defaults = nvsw_sn2201_regmap_default, + .num_reg_defaults = ARRAY_SIZE(nvsw_sn2201_regmap_default), +}; + +/* Regions for LPC I2C controller and LPC base register space. */ +static const struct resource nvsw_sn2201_lpc_io_resources[] = { + [0] = DEFINE_RES_NAMED(NVSW_SN2201_CPLD_LPC_I2C_BASE_ADRR, + NVSW_SN2201_CPLD_LPC_IO_RANGE, + "mlxplat_cpld_lpc_i2c_ctrl", IORESOURCE_IO), +}; + +static struct resource nvsw_sn2201_cpld_res[] = { + [0] = DEFINE_RES_IRQ_NAMED(NVSW_SN2201_CPLD_SYSIRQ, "mlxreg-hotplug"), +}; + +static struct resource nvsw_sn2201_lpc_res[] = { + [0] = DEFINE_RES_IRQ_NAMED(NVSW_SN2201_LPC_SYSIRQ, "i2c-mlxcpld"), +}; + +/* SN2201 I2C platform data. */ +static struct mlxreg_core_hotplug_platform_data nvsw_sn2201_i2c_data = { + .irq = NVSW_SN2201_CPLD_SYSIRQ, +}; + +/* SN2201 CPLD device. */ +static struct i2c_board_info nvsw_sn2201_cpld_devices[] = { + { + I2C_BOARD_INFO("nvsw-sn2201", 0x41), + }, +}; + +/* SN2201 CPLD board info. */ +static struct mlxreg_hotplug_device nvsw_sn2201_cpld_brdinfo[] = { + { + .brdinfo = &nvsw_sn2201_cpld_devices[0], + .nr = NVSW_SN2201_CPLD_NR, + }, +}; + +/* SN2201 main mux device. */ +static struct i2c_board_info nvsw_sn2201_main_mux_devices[] = { + { + I2C_BOARD_INFO("pca9548", 0x70), + }, +}; + +/* SN2201 main mux board info. */ +static struct mlxreg_hotplug_device nvsw_sn2201_main_mux_brdinfo[] = { + { + .brdinfo = &nvsw_sn2201_main_mux_devices[0], + .nr = NVSW_SN2201_MAIN_MUX_NR, + }, +}; + +/* SN2201 power devices. */ +static struct i2c_board_info nvsw_sn2201_pwr_devices[] = { + { + I2C_BOARD_INFO("pmbus", 0x58), + }, + { + I2C_BOARD_INFO("pmbus", 0x58), + }, +}; + +/* SN2201 fan devices. */ +static struct i2c_board_info nvsw_sn2201_fan_devices[] = { + { + I2C_BOARD_INFO("24c02", 0x50), + }, + { + I2C_BOARD_INFO("24c02", 0x51), + }, + { + I2C_BOARD_INFO("24c02", 0x52), + }, + { + I2C_BOARD_INFO("24c02", 0x53), + }, +}; + +/* SN2201 hotplug default data. */ +static struct mlxreg_core_data nvsw_sn2201_psu_items_data[] = { + { + .label = "psu1", + .reg = NVSW_SN2201_PS_PRSNT_STATUS_OFFSET, + .mask = BIT(0), + .hpdev.nr = NVSW_SN2201_NR_NONE, + }, + { + .label = "psu2", + .reg = NVSW_SN2201_PS_PRSNT_STATUS_OFFSET, + .mask = BIT(1), + .hpdev.nr = NVSW_SN2201_NR_NONE, + }, +}; + +static struct mlxreg_core_data nvsw_sn2201_pwr_items_data[] = { + { + .label = "pwr1", + .reg = NVSW_SN2201_PS_DC_OK_STATUS_OFFSET, + .mask = BIT(0), + .hpdev.brdinfo = &nvsw_sn2201_pwr_devices[0], + .hpdev.nr = NVSW_SN2201_MAIN_MUX_CH1_NR, + }, + { + .label = "pwr2", + .reg = NVSW_SN2201_PS_DC_OK_STATUS_OFFSET, + .mask = BIT(1), + .hpdev.brdinfo = &nvsw_sn2201_pwr_devices[1], + .hpdev.nr = NVSW_SN2201_MAIN_MUX_CH2_NR, + }, +}; + +static struct mlxreg_core_data nvsw_sn2201_fan_items_data[] = { + { + .label = "fan1", + .reg = NVSW_SN2201_FAN_PRSNT_STATUS_OFFSET, + .mask = BIT(0), + .hpdev.brdinfo = &nvsw_sn2201_fan_devices[0], + .hpdev.nr = NVSW_SN2201_NR_NONE, + }, + { + .label = "fan2", + .reg = NVSW_SN2201_FAN_PRSNT_STATUS_OFFSET, + .mask = BIT(1), + .hpdev.brdinfo = &nvsw_sn2201_fan_devices[1], + .hpdev.nr = NVSW_SN2201_NR_NONE, + }, + { + .label = "fan3", + .reg = NVSW_SN2201_FAN_PRSNT_STATUS_OFFSET, + .mask = BIT(2), + .hpdev.brdinfo = &nvsw_sn2201_fan_devices[2], + .hpdev.nr = NVSW_SN2201_NR_NONE, + }, + { + .label = "fan4", + .reg = NVSW_SN2201_FAN_PRSNT_STATUS_OFFSET, + .mask = BIT(3), + .hpdev.brdinfo = &nvsw_sn2201_fan_devices[3], + .hpdev.nr = NVSW_SN2201_NR_NONE, + }, +}; + +static struct mlxreg_core_data nvsw_sn2201_sys_items_data[] = { + { + .label = "nic_smb_alert", + .reg = NVSW_SN2201_ASIC_STATUS_OFFSET, + .mask = BIT(1), + .hpdev.nr = NVSW_SN2201_NR_NONE, + }, + { + .label = "cpu_sd", + .reg = NVSW_SN2201_ASIC_STATUS_OFFSET, + .mask = BIT(2), + .hpdev.nr = NVSW_SN2201_NR_NONE, + }, + { + .label = "mac_health", + .reg = NVSW_SN2201_ASIC_STATUS_OFFSET, + .mask = BIT(3), + .hpdev.nr = NVSW_SN2201_NR_NONE, + }, +}; + +static struct mlxreg_core_item nvsw_sn2201_items[] = { + { + .data = nvsw_sn2201_psu_items_data, + .aggr_mask = NVSW_SN2201_CPLD_AGGR_PSU_MASK_DEF, + .reg = NVSW_SN2201_PS_PRSNT_STATUS_OFFSET, + .mask = NVSW_SN2201_CPLD_PSU_MASK, + .count = ARRAY_SIZE(nvsw_sn2201_psu_items_data), + .inversed = 1, + .health = false, + }, + { + .data = nvsw_sn2201_pwr_items_data, + .aggr_mask = NVSW_SN2201_CPLD_AGGR_PWR_MASK_DEF, + .reg = NVSW_SN2201_PS_DC_OK_STATUS_OFFSET, + .mask = NVSW_SN2201_CPLD_PWR_MASK, + .count = ARRAY_SIZE(nvsw_sn2201_pwr_items_data), + .inversed = 0, + .health = false, + }, + { + .data = nvsw_sn2201_fan_items_data, + .aggr_mask = NVSW_SN2201_CPLD_AGGR_FAN_MASK_DEF, + .reg = NVSW_SN2201_FAN_PRSNT_STATUS_OFFSET, + .mask = NVSW_SN2201_CPLD_FAN_MASK, + .count = ARRAY_SIZE(nvsw_sn2201_fan_items_data), + .inversed = 1, + .health = false, + }, + { + .data = nvsw_sn2201_sys_items_data, + .aggr_mask = NVSW_SN2201_CPLD_AGGR_ASIC_MASK_DEF, + .reg = NVSW_SN2201_ASIC_STATUS_OFFSET, + .mask = NVSW_SN2201_CPLD_ASIC_MASK, + .count = ARRAY_SIZE(nvsw_sn2201_sys_items_data), + .inversed = 1, + .health = false, + }, +}; + +static +struct mlxreg_core_hotplug_platform_data nvsw_sn2201_hotplug = { + .items = nvsw_sn2201_items, + .counter = ARRAY_SIZE(nvsw_sn2201_items), + .cell = NVSW_SN2201_SYS_INT_STATUS_OFFSET, + .mask = NVSW_SN2201_CPLD_AGGR_MASK_DEF, +}; + +/* SN2201 static devices. */ +static struct i2c_board_info nvsw_sn2201_static_devices[] = { + { + I2C_BOARD_INFO("24c02", 0x57), + }, + { + I2C_BOARD_INFO("lm75", 0x4b), + }, + { + I2C_BOARD_INFO("24c64", 0x56), + }, + { + I2C_BOARD_INFO("ads1015", 0x49), + }, + { + I2C_BOARD_INFO("pca9546", 0x71), + }, + { + I2C_BOARD_INFO("emc2305", 0x4d), + }, + { + I2C_BOARD_INFO("lm75", 0x49), + }, + { + I2C_BOARD_INFO("pca9555", 0x27), + }, + { + I2C_BOARD_INFO("powr1014", 0x37), + }, + { + I2C_BOARD_INFO("lm75", 0x4f), + }, + { + I2C_BOARD_INFO("pmbus", 0x40), + }, +}; + +/* SN2201 default static board info. */ +static struct mlxreg_hotplug_device nvsw_sn2201_static_brdinfo[] = { + { + .brdinfo = &nvsw_sn2201_static_devices[0], + .nr = NVSW_SN2201_MAIN_NR, + }, + { + .brdinfo = &nvsw_sn2201_static_devices[1], + .nr = NVSW_SN2201_MAIN_MUX_CH0_NR, + }, + { + .brdinfo = &nvsw_sn2201_static_devices[2], + .nr = NVSW_SN2201_MAIN_MUX_CH0_NR, + }, + { + .brdinfo = &nvsw_sn2201_static_devices[3], + .nr = NVSW_SN2201_MAIN_MUX_CH0_NR, + }, + { + .brdinfo = &nvsw_sn2201_static_devices[4], + .nr = NVSW_SN2201_MAIN_MUX_CH3_NR, + }, + { + .brdinfo = &nvsw_sn2201_static_devices[5], + .nr = NVSW_SN2201_MAIN_MUX_CH5_NR, + }, + { + .brdinfo = &nvsw_sn2201_static_devices[6], + .nr = NVSW_SN2201_MAIN_MUX_CH5_NR, + }, + { + .brdinfo = &nvsw_sn2201_static_devices[7], + .nr = NVSW_SN2201_MAIN_MUX_CH5_NR, + }, + { + .brdinfo = &nvsw_sn2201_static_devices[8], + .nr = NVSW_SN2201_MAIN_MUX_CH6_NR, + }, + { + .brdinfo = &nvsw_sn2201_static_devices[9], + .nr = NVSW_SN2201_MAIN_MUX_CH6_NR, + }, + { + .brdinfo = &nvsw_sn2201_static_devices[10], + .nr = NVSW_SN2201_MAIN_MUX_CH7_NR, + }, +}; + +/* LED default data. */ +static struct mlxreg_core_data nvsw_sn2201_led_data[] = { + { + .label = "status:green", + .reg = NVSW_SN2201_FRONT_SYS_LED_CTRL_OFFSET, + .mask = GENMASK(7, 4), + }, + { + .label = "status:orange", + .reg = NVSW_SN2201_FRONT_SYS_LED_CTRL_OFFSET, + .mask = GENMASK(7, 4), + }, + { + .label = "psu:green", + .reg = NVSW_SN2201_FRONT_PSU_LED_CTRL_OFFSET, + .mask = GENMASK(7, 4), + }, + { + .label = "psu:orange", + .reg = NVSW_SN2201_FRONT_PSU_LED_CTRL_OFFSET, + .mask = GENMASK(7, 4), + }, + { + .label = "uid:blue", + .reg = NVSW_SN2201_FRONT_UID_LED_CTRL_OFFSET, + .mask = GENMASK(7, 4), + }, + { + .label = "fan1:green", + .reg = NVSW_SN2201_FAN_LED1_CTRL_OFFSET, + .mask = GENMASK(7, 4), + }, + { + .label = "fan1:orange", + .reg = NVSW_SN2201_FAN_LED1_CTRL_OFFSET, + .mask = GENMASK(7, 4), + }, + { + .label = "fan2:green", + .reg = NVSW_SN2201_FAN_LED1_CTRL_OFFSET, + .mask = GENMASK(3, 0), + }, + { + .label = "fan2:orange", + .reg = NVSW_SN2201_FAN_LED1_CTRL_OFFSET, + .mask = GENMASK(3, 0), + }, + { + .label = "fan3:green", + .reg = NVSW_SN2201_FAN_LED2_CTRL_OFFSET, + .mask = GENMASK(7, 4), + }, + { + .label = "fan3:orange", + .reg = NVSW_SN2201_FAN_LED2_CTRL_OFFSET, + .mask = GENMASK(7, 4), + }, + { + .label = "fan4:green", + .reg = NVSW_SN2201_FAN_LED2_CTRL_OFFSET, + .mask = GENMASK(3, 0), + }, + { + .label = "fan4:orange", + .reg = NVSW_SN2201_FAN_LED2_CTRL_OFFSET, + .mask = GENMASK(3, 0), + }, +}; + +static struct mlxreg_core_platform_data nvsw_sn2201_led = { + .data = nvsw_sn2201_led_data, + .counter = ARRAY_SIZE(nvsw_sn2201_led_data), +}; + +/* Default register access data. */ +static struct mlxreg_core_data nvsw_sn2201_io_data[] = { + { + .label = "cpld1_version", + .reg = NVSW_SN2201_CPLD_VER_OFFSET, + .bit = GENMASK(7, 0), + .mode = 0444, + }, + { + .label = "cpld1_version_min", + .reg = NVSW_SN2201_CPLD_MVER_OFFSET, + .bit = GENMASK(7, 0), + .mode = 0444, + }, + { + .label = "cpld1_pn", + .reg = NVSW_SN2201_CPLD_PN_OFFSET, + .bit = GENMASK(15, 0), + .mode = 0444, + .regnum = 2, + }, + { + .label = "psu1_on", + .reg = NVSW_SN2201_PSU_CTRL_OFFSET, + .mask = GENMASK(7, 0) & ~BIT(0), + .mode = 0644, + }, + { + .label = "psu2_on", + .reg = NVSW_SN2201_PSU_CTRL_OFFSET, + .mask = GENMASK(7, 0) & ~BIT(1), + .mode = 0644, + }, + { + .label = "pwr_cycle", + .reg = NVSW_SN2201_PSU_CTRL_OFFSET, + .mask = GENMASK(7, 0) & ~BIT(2), + .mode = 0644, + }, + { + .label = "asic_health", + .reg = NVSW_SN2201_SYS_STATUS_OFFSET, + .mask = GENMASK(4, 3), + .bit = 4, + .mode = 0444, + }, + { + .label = "qsfp_pwr_good", + .reg = NVSW_SN2201_SYS_STATUS_OFFSET, + .mask = GENMASK(7, 0) & ~BIT(0), + .mode = 0444, + }, + { + .label = "phy_reset", + .reg = NVSW_SN2201_SYS_RST_STATUS_OFFSET, + .mask = GENMASK(7, 0) & ~BIT(3), + .mode = 0644, + }, + { + .label = "mac_reset", + .reg = NVSW_SN2201_SYS_RST_STATUS_OFFSET, + .mask = GENMASK(7, 0) & ~BIT(2), + .mode = 0644, + }, + { + .label = "pwr_down", + .reg = NVSW_SN2201_RST_SW_CTRL_OFFSET, + .mask = GENMASK(7, 0) & ~BIT(0), + .mode = 0644, + }, + { + .label = "reset_long_pb", + .reg = NVSW_SN2201_RST_CAUSE1_OFFSET, + .mask = GENMASK(7, 0) & ~BIT(0), + .mode = 0444, + }, + { + .label = "reset_short_pb", + .reg = NVSW_SN2201_RST_CAUSE1_OFFSET, + .mask = GENMASK(7, 0) & ~BIT(1), + .mode = 0444, + }, + { + .label = "reset_aux_pwr_or_fu", + .reg = NVSW_SN2201_RST_CAUSE1_OFFSET, + .mask = GENMASK(7, 0) & ~BIT(2), + .mode = 0444, + }, + { + .label = "reset_swb_dc_dc_pwr_fail", + .reg = NVSW_SN2201_RST_CAUSE1_OFFSET, + .mask = GENMASK(7, 0) & ~BIT(3), + .mode = 0444, + }, + { + .label = "reset_sw_reset", + .reg = NVSW_SN2201_RST_CAUSE1_OFFSET, + .mask = GENMASK(7, 0) & ~BIT(4), + .mode = 0444, + }, + { + .label = "reset_fw_reset", + .reg = NVSW_SN2201_RST_CAUSE1_OFFSET, + .mask = GENMASK(7, 0) & ~BIT(5), + .mode = 0444, + }, + { + .label = "reset_swb_wd", + .reg = NVSW_SN2201_RST_CAUSE1_OFFSET, + .mask = GENMASK(7, 0) & ~BIT(6), + .mode = 0444, + }, + { + .label = "reset_asic_thermal", + .reg = NVSW_SN2201_RST_CAUSE1_OFFSET, + .mask = GENMASK(7, 0) & ~BIT(7), + .mode = 0444, + }, + { + .label = "reset_system", + .reg = NVSW_SN2201_RST_CAUSE2_OFFSET, + .mask = GENMASK(7, 0) & ~BIT(1), + .mode = 0444, + }, + { + .label = "reset_sw_pwr_off", + .reg = NVSW_SN2201_RST_CAUSE2_OFFSET, + .mask = GENMASK(7, 0) & ~BIT(2), + .mode = 0444, + }, + { + .label = "reset_cpu_pwr_fail_thermal", + .reg = NVSW_SN2201_RST_CAUSE2_OFFSET, + .mask = GENMASK(7, 0) & ~BIT(4), + .mode = 0444, + }, + { + .label = "reset_reload_bios", + .reg = NVSW_SN2201_RST_CAUSE2_OFFSET, + .mask = GENMASK(7, 0) & ~BIT(5), + .mode = 0444, + }, + { + .label = "reset_ac_pwr_fail", + .reg = NVSW_SN2201_RST_CAUSE2_OFFSET, + .mask = GENMASK(7, 0) & ~BIT(6), + .mode = 0444, + }, + { + .label = "psu1", + .reg = NVSW_SN2201_PS_PRSNT_STATUS_OFFSET, + .mask = GENMASK(7, 0) & ~BIT(0), + .mode = 0444, + }, + { + .label = "psu2", + .reg = NVSW_SN2201_PS_PRSNT_STATUS_OFFSET, + .mask = GENMASK(7, 0) & ~BIT(1), + .mode = 0444, + }, +}; + +static struct mlxreg_core_platform_data nvsw_sn2201_regs_io = { + .data = nvsw_sn2201_io_data, + .counter = ARRAY_SIZE(nvsw_sn2201_io_data), +}; + +/* Default watchdog data. */ +static struct mlxreg_core_data nvsw_sn2201_wd_data[] = { + { + .label = "action", + .reg = NVSW_SN2201_WD_ACT_OFFSET, + .mask = GENMASK(7, 1), + .bit = 0, + }, + { + .label = "timeout", + .reg = NVSW_SN2201_WD_TMR_OFFSET_LSB, + .mask = 0, + .health_cntr = NVSW_SN2201_WD_DFLT_TIMEOUT, + }, + { + .label = "timeleft", + .reg = NVSW_SN2201_WD_TMR_OFFSET_LSB, + .mask = 0, + }, + { + .label = "ping", + .reg = NVSW_SN2201_WD_ACT_OFFSET, + .mask = GENMASK(7, 1), + .bit = 0, + }, + { + .label = "reset", + .reg = NVSW_SN2201_RST_CAUSE1_OFFSET, + .mask = GENMASK(7, 0) & ~BIT(6), + .bit = 6, + }, +}; + +static struct mlxreg_core_platform_data nvsw_sn2201_wd = { + .data = nvsw_sn2201_wd_data, + .counter = ARRAY_SIZE(nvsw_sn2201_wd_data), + .version = MLX_WDT_TYPE3, + .identity = "mlx-wdt-main", +}; + +static int +nvsw_sn2201_create_static_devices(struct nvsw_sn2201 *nvsw_sn2201, + struct mlxreg_hotplug_device *devs, + int size) +{ + struct mlxreg_hotplug_device *dev = devs; + int ret; + int i; + + /* Create I2C static devices. */ + for (i = 0; i < size; i++, dev++) { + dev->client = i2c_new_client_device(dev->adapter, dev->brdinfo); + if (IS_ERR(dev->client)) { + dev_err(nvsw_sn2201->dev, "Failed to create client %s at bus %d at addr 0x%02x\n", + dev->brdinfo->type, + dev->nr, dev->brdinfo->addr); + + dev->adapter = NULL; + ret = PTR_ERR(dev->client); + goto fail_create_static_devices; + } + } + + return 0; + +fail_create_static_devices: + while (--i >= 0) { + dev = devs + i; + i2c_unregister_device(dev->client); + dev->client = NULL; + dev->adapter = NULL; + } + return ret; +} + +static void nvsw_sn2201_destroy_static_devices(struct nvsw_sn2201 *nvsw_sn2201, + struct mlxreg_hotplug_device *devs, int size) +{ + struct mlxreg_hotplug_device *dev = devs; + int i; + + /* Destroy static I2C device for SN2201 static devices. */ + for (i = 0; i < size; i++, dev++) { + if (dev->client) { + i2c_unregister_device(dev->client); + dev->client = NULL; + i2c_put_adapter(dev->adapter); + dev->adapter = NULL; + } + } +} + +static int nvsw_sn2201_config_post_init(struct nvsw_sn2201 *nvsw_sn2201) +{ + struct mlxreg_hotplug_device *sn2201_dev; + struct i2c_adapter *adap; + struct device *dev; + int i, err; + + dev = nvsw_sn2201->dev; + adap = i2c_get_adapter(nvsw_sn2201->main_mux_deferred_nr); + if (!adap) { + dev_err(dev, "Failed to get adapter for bus %d\n", + nvsw_sn2201->main_mux_deferred_nr); + return -ENODEV; + } + i2c_put_adapter(adap); + + /* Update board info. */ + sn2201_dev = nvsw_sn2201->sn2201_devs; + for (i = 0; i < nvsw_sn2201->sn2201_devs_num; i++, sn2201_dev++) { + sn2201_dev->adapter = i2c_get_adapter(sn2201_dev->nr); + if (!sn2201_dev->adapter) + return -ENODEV; + i2c_put_adapter(sn2201_dev->adapter); + } + + err = nvsw_sn2201_create_static_devices(nvsw_sn2201, nvsw_sn2201->sn2201_devs, + nvsw_sn2201->sn2201_devs_num); + if (err) + dev_err(dev, "Failed to create static devices\n"); + + return err; +} + +static int nvsw_sn2201_config_init(struct nvsw_sn2201 *nvsw_sn2201, void *regmap) +{ + struct device *dev = nvsw_sn2201->dev; + int err; + + nvsw_sn2201->io_data = &nvsw_sn2201_regs_io; + nvsw_sn2201->led_data = &nvsw_sn2201_led; + nvsw_sn2201->wd_data = &nvsw_sn2201_wd; + nvsw_sn2201->hotplug_data = &nvsw_sn2201_hotplug; + + /* Register IO access driver. */ + if (nvsw_sn2201->io_data) { + nvsw_sn2201->io_data->regmap = regmap; + nvsw_sn2201->io_regs = + platform_device_register_resndata(dev, "mlxreg-io", PLATFORM_DEVID_NONE, NULL, 0, + nvsw_sn2201->io_data, + sizeof(*nvsw_sn2201->io_data)); + if (IS_ERR(nvsw_sn2201->io_regs)) { + err = PTR_ERR(nvsw_sn2201->io_regs); + goto fail_register_io; + } + } + + /* Register LED driver. */ + if (nvsw_sn2201->led_data) { + nvsw_sn2201->led_data->regmap = regmap; + nvsw_sn2201->led = + platform_device_register_resndata(dev, "leds-mlxreg", PLATFORM_DEVID_NONE, NULL, 0, + nvsw_sn2201->led_data, + sizeof(*nvsw_sn2201->led_data)); + if (IS_ERR(nvsw_sn2201->led)) { + err = PTR_ERR(nvsw_sn2201->led); + goto fail_register_led; + } + } + + /* Register WD driver. */ + if (nvsw_sn2201->wd_data) { + nvsw_sn2201->wd_data->regmap = regmap; + nvsw_sn2201->wd = + platform_device_register_resndata(dev, "mlx-wdt", PLATFORM_DEVID_NONE, NULL, 0, + nvsw_sn2201->wd_data, + sizeof(*nvsw_sn2201->wd_data)); + if (IS_ERR(nvsw_sn2201->wd)) { + err = PTR_ERR(nvsw_sn2201->wd); + goto fail_register_wd; + } + } + + /* Register hotplug driver. */ + if (nvsw_sn2201->hotplug_data) { + nvsw_sn2201->hotplug_data->regmap = regmap; + nvsw_sn2201->pdev_hotplug = + platform_device_register_resndata(dev, "mlxreg-hotplug", PLATFORM_DEVID_NONE, + nvsw_sn2201_cpld_res, + ARRAY_SIZE(nvsw_sn2201_cpld_res), + nvsw_sn2201->hotplug_data, + sizeof(*nvsw_sn2201->hotplug_data)); + if (IS_ERR(nvsw_sn2201->pdev_hotplug)) { + err = PTR_ERR(nvsw_sn2201->pdev_hotplug); + goto fail_register_hotplug; + } + } + + return nvsw_sn2201_config_post_init(nvsw_sn2201); + +fail_register_hotplug: + if (nvsw_sn2201->wd) + platform_device_unregister(nvsw_sn2201->wd); +fail_register_wd: + if (nvsw_sn2201->led) + platform_device_unregister(nvsw_sn2201->led); +fail_register_led: + if (nvsw_sn2201->io_regs) + platform_device_unregister(nvsw_sn2201->io_regs); +fail_register_io: + + return err; +} + +static void nvsw_sn2201_config_exit(struct nvsw_sn2201 *nvsw_sn2201) +{ + /* Unregister hotplug driver. */ + if (nvsw_sn2201->pdev_hotplug) + platform_device_unregister(nvsw_sn2201->pdev_hotplug); + /* Unregister WD driver. */ + if (nvsw_sn2201->wd) + platform_device_unregister(nvsw_sn2201->wd); + /* Unregister LED driver. */ + if (nvsw_sn2201->led) + platform_device_unregister(nvsw_sn2201->led); + /* Unregister IO access driver. */ + if (nvsw_sn2201->io_regs) + platform_device_unregister(nvsw_sn2201->io_regs); +} + +/* + * 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) +{ + struct nvsw_sn2201 *nvsw_sn2201 = handle; + void *regmap; + int i, err; + + /* Create main mux. */ + nvsw_sn2201->main_mux_devs->adapter = i2c_get_adapter(nvsw_sn2201->main_mux_devs->nr); + if (!nvsw_sn2201->main_mux_devs->adapter) { + err = -ENODEV; + dev_err(nvsw_sn2201->dev, "Failed to get adapter for bus %d\n", + nvsw_sn2201->cpld_devs->nr); + goto i2c_get_adapter_main_fail; + } + + nvsw_sn2201->main_mux_devs_num = ARRAY_SIZE(nvsw_sn2201_main_mux_brdinfo); + err = nvsw_sn2201_create_static_devices(nvsw_sn2201, nvsw_sn2201->main_mux_devs, + nvsw_sn2201->main_mux_devs_num); + if (err) { + dev_err(nvsw_sn2201->dev, "Failed to create main mux devices\n"); + goto nvsw_sn2201_create_static_devices_fail; + } + + nvsw_sn2201->cpld_devs->adapter = i2c_get_adapter(nvsw_sn2201->cpld_devs->nr); + if (!nvsw_sn2201->cpld_devs->adapter) { + err = -ENODEV; + dev_err(nvsw_sn2201->dev, "Failed to get adapter for bus %d\n", + nvsw_sn2201->cpld_devs->nr); + goto i2c_get_adapter_fail; + } + + /* Create CPLD device. */ + nvsw_sn2201->cpld_devs->client = i2c_new_dummy_device(nvsw_sn2201->cpld_devs->adapter, + NVSW_SN2201_CPLD_I2CADDR); + if (IS_ERR(nvsw_sn2201->cpld_devs->client)) { + err = PTR_ERR(nvsw_sn2201->cpld_devs->client); + dev_err(nvsw_sn2201->dev, "Failed to create %s cpld device at bus %d at addr 0x%02x\n", + nvsw_sn2201->cpld_devs->brdinfo->type, nvsw_sn2201->cpld_devs->nr, + nvsw_sn2201->cpld_devs->brdinfo->addr); + goto i2c_new_dummy_fail; + } + + regmap = devm_regmap_init_i2c(nvsw_sn2201->cpld_devs->client, &nvsw_sn2201_regmap_conf); + if (IS_ERR(regmap)) { + err = PTR_ERR(regmap); + dev_err(nvsw_sn2201->dev, "Failed to initialise managed register map\n"); + goto devm_regmap_init_i2c_fail; + } + + /* Set default registers. */ + for (i = 0; i < nvsw_sn2201_regmap_conf.num_reg_defaults; i++) { + err = regmap_write(regmap, nvsw_sn2201_regmap_default[i].reg, + nvsw_sn2201_regmap_default[i].def); + if (err) { + dev_err(nvsw_sn2201->dev, "Failed to set register at offset 0x%02x to default value: 0x%02x\n", + nvsw_sn2201_regmap_default[i].reg, + nvsw_sn2201_regmap_default[i].def); + goto regmap_write_fail; + } + } + + /* Sync registers with hardware. */ + regcache_mark_dirty(regmap); + err = regcache_sync(regmap); + if (err) { + dev_err(nvsw_sn2201->dev, "Failed to Sync registers with hardware\n"); + goto regcache_sync_fail; + } + + /* Configure SN2201 board. */ + err = nvsw_sn2201_config_init(nvsw_sn2201, regmap); + if (err) { + dev_err(nvsw_sn2201->dev, "Failed to configure board\n"); + goto nvsw_sn2201_config_init_fail; + } + + return 0; + +nvsw_sn2201_config_init_fail: + nvsw_sn2201_config_exit(nvsw_sn2201); +regcache_sync_fail: +regmap_write_fail: +devm_regmap_init_i2c_fail: +i2c_new_dummy_fail: + i2c_put_adapter(nvsw_sn2201->cpld_devs->adapter); + nvsw_sn2201->cpld_devs->adapter = NULL; +i2c_get_adapter_fail: + /* Destroy SN2201 static I2C devices. */ + nvsw_sn2201_destroy_static_devices(nvsw_sn2201, nvsw_sn2201->sn2201_devs, + nvsw_sn2201->sn2201_devs_num); + /* Destroy main mux device. */ + nvsw_sn2201_destroy_static_devices(nvsw_sn2201, nvsw_sn2201->main_mux_devs, + nvsw_sn2201->main_mux_devs_num); +nvsw_sn2201_create_static_devices_fail: + i2c_put_adapter(nvsw_sn2201->main_mux_devs->adapter); +i2c_get_adapter_main_fail: + return err; +} + +static int nvsw_sn2201_config_pre_init(struct nvsw_sn2201 *nvsw_sn2201) +{ + nvsw_sn2201->i2c_data = &nvsw_sn2201_i2c_data; + + /* Register I2C controller. */ + nvsw_sn2201->i2c_data->handle = nvsw_sn2201; + nvsw_sn2201->i2c_data->completion_notify = nvsw_sn2201_i2c_completion_notify; + nvsw_sn2201->pdev_i2c = platform_device_register_resndata(nvsw_sn2201->dev, "i2c_mlxcpld", + NVSW_SN2201_MAIN_MUX_NR, + nvsw_sn2201_lpc_res, + ARRAY_SIZE(nvsw_sn2201_lpc_res), + nvsw_sn2201->i2c_data, + sizeof(*nvsw_sn2201->i2c_data)); + if (IS_ERR(nvsw_sn2201->pdev_i2c)) + return PTR_ERR(nvsw_sn2201->pdev_i2c); + + return 0; +} + +static int nvsw_sn2201_probe(struct platform_device *pdev) +{ + struct nvsw_sn2201 *nvsw_sn2201; + + nvsw_sn2201 = devm_kzalloc(&pdev->dev, sizeof(*nvsw_sn2201), GFP_KERNEL); + if (!nvsw_sn2201) + return -ENOMEM; + + nvsw_sn2201->dev = &pdev->dev; + platform_set_drvdata(pdev, nvsw_sn2201); + platform_device_add_resources(pdev, nvsw_sn2201_lpc_io_resources, + ARRAY_SIZE(nvsw_sn2201_lpc_io_resources)); + + nvsw_sn2201->main_mux_deferred_nr = NVSW_SN2201_MAIN_MUX_DEFER_NR; + nvsw_sn2201->main_mux_devs = nvsw_sn2201_main_mux_brdinfo; + nvsw_sn2201->cpld_devs = nvsw_sn2201_cpld_brdinfo; + nvsw_sn2201->sn2201_devs = nvsw_sn2201_static_brdinfo; + nvsw_sn2201->sn2201_devs_num = ARRAY_SIZE(nvsw_sn2201_static_brdinfo); + + return nvsw_sn2201_config_pre_init(nvsw_sn2201); +} + +static int nvsw_sn2201_remove(struct platform_device *pdev) +{ + struct nvsw_sn2201 *nvsw_sn2201 = platform_get_drvdata(pdev); + + /* Unregister underlying drivers. */ + nvsw_sn2201_config_exit(nvsw_sn2201); + + /* Destroy SN2201 static I2C devices. */ + nvsw_sn2201_destroy_static_devices(nvsw_sn2201, + nvsw_sn2201->sn2201_devs, + nvsw_sn2201->sn2201_devs_num); + + i2c_put_adapter(nvsw_sn2201->cpld_devs->adapter); + nvsw_sn2201->cpld_devs->adapter = NULL; + /* Destroy main mux device. */ + nvsw_sn2201_destroy_static_devices(nvsw_sn2201, + nvsw_sn2201->main_mux_devs, + nvsw_sn2201->main_mux_devs_num); + + /* Unregister I2C controller. */ + if (nvsw_sn2201->pdev_i2c) + platform_device_unregister(nvsw_sn2201->pdev_i2c); + + return 0; +} + +static const struct acpi_device_id nvsw_sn2201_acpi_ids[] = { + {"NVSN2201", 0}, + {} +}; + +MODULE_DEVICE_TABLE(acpi, nvsw_sn2201_acpi_ids); + +static struct platform_driver nvsw_sn2201_driver = { + .probe = nvsw_sn2201_probe, + .remove = nvsw_sn2201_remove, + .driver = { + .name = "nvsw-sn2201", + .acpi_match_table = nvsw_sn2201_acpi_ids, + }, +}; + +module_platform_driver(nvsw_sn2201_driver); + +MODULE_AUTHOR("Nvidia"); +MODULE_DESCRIPTION("Nvidia sn2201 platform driver"); +MODULE_LICENSE("Dual BSD/GPL"); +MODULE_ALIAS("platform:nvsw-sn2201"); |