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linuxdebug/drivers/platform/mellanox/nvsw-sn2201.c

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null pointer error
2024-07-16 15:50:57 +02:00
// 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");