diff options
Diffstat (limited to 'drivers/hwmon/pmbus/mp2869.c')
| -rw-r--r-- | drivers/hwmon/pmbus/mp2869.c | 659 |
1 files changed, 659 insertions, 0 deletions
diff --git a/drivers/hwmon/pmbus/mp2869.c b/drivers/hwmon/pmbus/mp2869.c new file mode 100644 index 000000000000..cc69a1e91dfe --- /dev/null +++ b/drivers/hwmon/pmbus/mp2869.c @@ -0,0 +1,659 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * Hardware monitoring driver for MPS Multi-phase Digital VR Controllers(MP2869) + */ + +#include <linux/bitfield.h> +#include <linux/i2c.h> +#include <linux/module.h> +#include <linux/of_device.h> +#include "pmbus.h" + +/* + * Vender specific registers, the register MFR_SVI3_IOUT_PRT(0x67), + * READ_PIN_EST(0x94)and READ_IIN_EST(0x95) redefine the standard + * PMBUS register. The MFR_VOUT_LOOP_CTRL(0x29) is used to identify + * the vout scale and the MFR_SVI3_IOUT_PRT(0x67) is used to identify + * the iout scale. The READ_PIN_EST(0x94) is used to read input power + * per rail. The MP2891 does not have standard READ_IIN register(0x89), + * the iin telemetry can be obtained through the vendor redefined + * register READ_IIN_EST(0x95). + */ +#define MFR_SVI3_IOUT_PRT 0x67 +#define MFR_READ_PIN_EST 0x94 +#define MFR_READ_IIN_EST 0x95 +#define MFR_TSNS_FLT_SET 0xBB + +#define MP2869_VIN_OV_FAULT_GAIN 4 +#define MP2869_READ_VOUT_DIV 1024 +#define MP2869_READ_IOUT_DIV 32 +#define MP2869_OVUV_LIMIT_SCALE 10 +#define MP2869_OVUV_DELTA_SCALE 50 +#define MP2869_TEMP_LIMIT_OFFSET 40 +#define MP2869_IOUT_LIMIT_UINT 8 +#define MP2869_POUT_OP_GAIN 2 + +#define MP2869_PAGE_NUM 2 + +#define MP2869_RAIL1_FUNC (PMBUS_HAVE_VIN | PMBUS_HAVE_VOUT | \ + PMBUS_HAVE_IOUT | PMBUS_HAVE_POUT | \ + PMBUS_HAVE_TEMP | PMBUS_HAVE_PIN | \ + PMBUS_HAVE_IIN | \ + PMBUS_HAVE_STATUS_VOUT | \ + PMBUS_HAVE_STATUS_IOUT | \ + PMBUS_HAVE_STATUS_TEMP | \ + PMBUS_HAVE_STATUS_INPUT) + +#define MP2869_RAIL2_FUNC (PMBUS_HAVE_VOUT | PMBUS_HAVE_IOUT | \ + PMBUS_HAVE_POUT | PMBUS_HAVE_TEMP | \ + PMBUS_HAVE_PIN | PMBUS_HAVE_IIN | \ + PMBUS_HAVE_STATUS_VOUT | \ + PMBUS_HAVE_STATUS_IOUT | \ + PMBUS_HAVE_STATUS_TEMP | \ + PMBUS_HAVE_STATUS_INPUT) + +struct mp2869_data { + struct pmbus_driver_info info; + bool mfr_thwn_flt_en; + int vout_scale[MP2869_PAGE_NUM]; + int iout_scale[MP2869_PAGE_NUM]; +}; + +static const int mp2869_vout_sacle[8] = {6400, 5120, 2560, 2048, 1024, + 4, 2, 1}; +static const int mp2869_iout_sacle[8] = {32, 1, 2, 4, 8, 16, 32, 64}; + +#define to_mp2869_data(x) container_of(x, struct mp2869_data, info) + +static u16 mp2869_reg2data_linear11(u16 word) +{ + s16 exponent; + s32 mantissa; + s64 val; + + exponent = ((s16)word) >> 11; + mantissa = ((s16)((word & 0x7ff) << 5)) >> 5; + val = mantissa; + + if (exponent >= 0) + val <<= exponent; + else + val >>= -exponent; + + return val; +} + +static int +mp2869_identify_thwn_flt(struct i2c_client *client, struct pmbus_driver_info *info, + int page) +{ + struct mp2869_data *data = to_mp2869_data(info); + int ret; + + ret = i2c_smbus_write_byte_data(client, PMBUS_PAGE, page); + if (ret < 0) + return ret; + + ret = i2c_smbus_read_word_data(client, MFR_TSNS_FLT_SET); + if (ret < 0) + return ret; + + data->mfr_thwn_flt_en = FIELD_GET(GENMASK(13, 13), ret); + + return 0; +} + +static int +mp2869_identify_vout_scale(struct i2c_client *client, struct pmbus_driver_info *info, + int page) +{ + struct mp2869_data *data = to_mp2869_data(info); + int ret; + + ret = i2c_smbus_write_byte_data(client, PMBUS_PAGE, page); + if (ret < 0) + return ret; + + ret = i2c_smbus_read_word_data(client, PMBUS_VOUT_SCALE_LOOP); + if (ret < 0) + return ret; + + /* + * The output voltage is equal to the READ_VOUT(0x8B) register value multiply + * by vout_scale. + * Obtain vout scale from the register PMBUS_VOUT_SCALE_LOOP, bits 12-10 + * PMBUS_VOUT_SCALE_LOOP[12:10]: + * 000b - 6.25mV/LSB, 001b - 5mV/LSB, 010b - 2.5mV/LSB, 011b - 2mV/LSB + * 100b - 1mV/Lsb, 101b - (1/256)mV/LSB, 110b - (1/512)mV/LSB, + * 111b - (1/1024)mV/LSB + */ + data->vout_scale[page] = mp2869_vout_sacle[FIELD_GET(GENMASK(12, 10), ret)]; + + return 0; +} + +static int +mp2869_identify_iout_scale(struct i2c_client *client, struct pmbus_driver_info *info, + int page) +{ + struct mp2869_data *data = to_mp2869_data(info); + int ret; + + ret = i2c_smbus_write_byte_data(client, PMBUS_PAGE, page); + if (ret < 0) + return ret; + + ret = i2c_smbus_read_word_data(client, MFR_SVI3_IOUT_PRT); + if (ret < 0) + return ret; + + /* + * The output current is equal to the READ_IOUT(0x8C) register value + * multiply by iout_scale. + * Obtain iout_scale from the register MFR_SVI3_IOUT_PRT[2:0]. + * The value is selected as below: + * 000b - 1A/LSB, 001b - (1/32)A/LSB, 010b - (1/16)A/LSB, + * 011b - (1/8)A/LSB, 100b - (1/4)A/LSB, 101b - (1/2)A/LSB + * 110b - 1A/LSB, 111b - 2A/LSB + */ + data->iout_scale[page] = mp2869_iout_sacle[FIELD_GET(GENMASK(2, 0), ret)]; + + return 0; +} + +static int mp2869_read_byte_data(struct i2c_client *client, int page, int reg) +{ + const struct pmbus_driver_info *info = pmbus_get_driver_info(client); + struct mp2869_data *data = to_mp2869_data(info); + int ret; + + switch (reg) { + case PMBUS_VOUT_MODE: + /* + * The calculation of vout in this driver is based on direct format. + * As a result, the format of vout is enforced to direct. + */ + ret = PB_VOUT_MODE_DIRECT; + break; + case PMBUS_STATUS_BYTE: + /* + * If the tsns digital fault is enabled, the TEMPERATURE flag + * of PMBUS_STATUS_BYTE should come from STATUS_MFR_SPECIFIC + * register bit1. + */ + if (!data->mfr_thwn_flt_en) + return -ENODATA; + + ret = pmbus_read_byte_data(client, page, reg); + if (ret < 0) + return ret; + + ret = (ret & ~GENMASK(2, 2)) | + FIELD_PREP(GENMASK(2, 2), + FIELD_GET(GENMASK(1, 1), + pmbus_read_byte_data(client, page, + PMBUS_STATUS_MFR_SPECIFIC))); + break; + case PMBUS_STATUS_TEMPERATURE: + /* + * If the tsns digital fault is enabled, the OT Fault and OT Warning + * flag of PMBUS_STATUS_TEMPERATURE should come from STATUS_MFR_SPECIFIC + * register bit1. + */ + if (!data->mfr_thwn_flt_en) + return -ENODATA; + + ret = pmbus_read_byte_data(client, page, reg); + if (ret < 0) + return ret; + + ret = (ret & ~GENMASK(7, 6)) | + FIELD_PREP(GENMASK(6, 6), + FIELD_GET(GENMASK(1, 1), + pmbus_read_byte_data(client, page, + PMBUS_STATUS_MFR_SPECIFIC))) | + FIELD_PREP(GENMASK(7, 7), + FIELD_GET(GENMASK(1, 1), + pmbus_read_byte_data(client, page, + PMBUS_STATUS_MFR_SPECIFIC))); + break; + default: + ret = -ENODATA; + break; + } + + return ret; +} + +static int mp2869_read_word_data(struct i2c_client *client, int page, int phase, + int reg) +{ + const struct pmbus_driver_info *info = pmbus_get_driver_info(client); + struct mp2869_data *data = to_mp2869_data(info); + int ret; + + switch (reg) { + case PMBUS_STATUS_WORD: + /* + * If the tsns digital fault is enabled, the OT Fault flag + * of PMBUS_STATUS_WORD should come from STATUS_MFR_SPECIFIC + * register bit1. + */ + if (!data->mfr_thwn_flt_en) + return -ENODATA; + + ret = pmbus_read_word_data(client, page, phase, reg); + if (ret < 0) + return ret; + + ret = (ret & ~GENMASK(2, 2)) | + FIELD_PREP(GENMASK(2, 2), + FIELD_GET(GENMASK(1, 1), + pmbus_read_byte_data(client, page, + PMBUS_STATUS_MFR_SPECIFIC))); + break; + case PMBUS_READ_VIN: + /* + * The MP2869 PMBUS_READ_VIN[10:0] is the vin value, the vin scale is + * 31.25mV/LSB. And the vin scale is set to 31.25mV/Lsb(using r/m/b scale) + * in MP2869 pmbus_driver_info struct, so the word data bit0-bit10 can be + * returned to pmbus core directly. + */ + ret = pmbus_read_word_data(client, page, phase, reg); + if (ret < 0) + return ret; + + ret = FIELD_GET(GENMASK(10, 0), ret); + break; + case PMBUS_READ_IIN: + /* + * The MP2869 redefine the standard 0x95 register as iin telemetry + * per rail. + */ + ret = pmbus_read_word_data(client, page, phase, MFR_READ_IIN_EST); + if (ret < 0) + return ret; + + break; + case PMBUS_READ_PIN: + /* + * The MP2869 redefine the standard 0x94 register as pin telemetry + * per rail. The MP2869 MFR_READ_PIN_EST register is linear11 format, + * but the pin scale is set to 1W/Lsb(using r/m/b scale). As a result, + * the pin read from MP2869 should be converted to W, then return + * the result to pmbus core. + */ + ret = pmbus_read_word_data(client, page, phase, MFR_READ_PIN_EST); + if (ret < 0) + return ret; + + ret = mp2869_reg2data_linear11(ret); + break; + case PMBUS_READ_VOUT: + ret = pmbus_read_word_data(client, page, phase, reg); + if (ret < 0) + return ret; + + ret = DIV_ROUND_CLOSEST((ret & GENMASK(11, 0)) * data->vout_scale[page], + MP2869_READ_VOUT_DIV); + break; + case PMBUS_READ_IOUT: + ret = pmbus_read_word_data(client, page, phase, reg); + if (ret < 0) + return ret; + + ret = DIV_ROUND_CLOSEST((ret & GENMASK(10, 0)) * data->iout_scale[page], + MP2869_READ_IOUT_DIV); + break; + case PMBUS_READ_POUT: + /* + * The MP2869 PMBUS_READ_POUT register is linear11 format, but the pout + * scale is set to 1W/Lsb(using r/m/b scale). As a result, the pout read + * from MP2869 should be converted to W, then return the result to pmbus + * core. + */ + ret = pmbus_read_word_data(client, page, phase, reg); + if (ret < 0) + return ret; + + ret = mp2869_reg2data_linear11(ret); + break; + case PMBUS_READ_TEMPERATURE_1: + ret = pmbus_read_word_data(client, page, phase, reg); + if (ret < 0) + return ret; + + ret = FIELD_GET(GENMASK(10, 0), ret); + break; + case PMBUS_VOUT_OV_FAULT_LIMIT: + ret = pmbus_read_word_data(client, page, phase, reg); + if (ret < 0) + return ret; + + if (FIELD_GET(GENMASK(12, 9), ret)) + ret = FIELD_GET(GENMASK(8, 0), ret) * MP2869_OVUV_LIMIT_SCALE + + (FIELD_GET(GENMASK(12, 9), ret) + 1) * MP2869_OVUV_DELTA_SCALE; + else + ret = FIELD_GET(GENMASK(8, 0), ret) * MP2869_OVUV_LIMIT_SCALE; + break; + case PMBUS_VOUT_UV_FAULT_LIMIT: + ret = pmbus_read_word_data(client, page, phase, reg); + if (ret < 0) + return ret; + + if (FIELD_GET(GENMASK(12, 9), ret)) + ret = FIELD_GET(GENMASK(8, 0), ret) * MP2869_OVUV_LIMIT_SCALE - + (FIELD_GET(GENMASK(12, 9), ret) + 1) * MP2869_OVUV_DELTA_SCALE; + else + ret = FIELD_GET(GENMASK(8, 0), ret) * MP2869_OVUV_LIMIT_SCALE; + break; + case PMBUS_OT_FAULT_LIMIT: + case PMBUS_OT_WARN_LIMIT: + /* + * The scale of MP2869 PMBUS_OT_FAULT_LIMIT and PMBUS_OT_WARN_LIMIT + * is 1°C/LSB and they have 40°C offset. + */ + ret = pmbus_read_word_data(client, page, phase, reg); + if (ret < 0) + return ret; + + ret = (ret & GENMASK(7, 0)) - MP2869_TEMP_LIMIT_OFFSET; + break; + case PMBUS_VIN_OV_FAULT_LIMIT: + ret = pmbus_read_word_data(client, page, phase, reg); + if (ret < 0) + return ret; + + ret = (ret & GENMASK(7, 0)) * MP2869_VIN_OV_FAULT_GAIN; + break; + case PMBUS_VIN_UV_WARN_LIMIT: + case PMBUS_VIN_UV_FAULT_LIMIT: + ret = pmbus_read_word_data(client, page, phase, reg); + if (ret < 0) + return ret; + + ret = FIELD_GET(GENMASK(9, 0), ret); + break; + case PMBUS_IOUT_OC_FAULT_LIMIT: + case PMBUS_IOUT_OC_WARN_LIMIT: + ret = pmbus_read_word_data(client, page, phase, reg); + if (ret < 0) + return ret; + + ret = DIV_ROUND_CLOSEST((ret & GENMASK(7, 0)) * data->iout_scale[page] * + MP2869_IOUT_LIMIT_UINT, MP2869_READ_IOUT_DIV); + break; + case PMBUS_POUT_OP_WARN_LIMIT: + ret = pmbus_read_word_data(client, page, phase, reg); + if (ret < 0) + return ret; + + ret = (ret & GENMASK(7, 0)) * MP2869_POUT_OP_GAIN; + break; + default: + ret = -EINVAL; + break; + } + + return ret; +} + +static int mp2869_write_word_data(struct i2c_client *client, int page, int reg, + u16 word) +{ + const struct pmbus_driver_info *info = pmbus_get_driver_info(client); + struct mp2869_data *data = to_mp2869_data(info); + int ret; + + switch (reg) { + case PMBUS_VOUT_UV_FAULT_LIMIT: + /* + * The MP2869 PMBUS_VOUT_UV_FAULT_LIMIT[8:0] is the limit value, + * and bit9-bit15 should not be changed. + */ + ret = pmbus_read_word_data(client, page, 0xff, reg); + if (ret < 0) + return ret; + + if (FIELD_GET(GENMASK(12, 9), ret)) + ret = pmbus_write_word_data(client, page, reg, + (ret & ~GENMASK(8, 0)) | + FIELD_PREP(GENMASK(8, 0), + DIV_ROUND_CLOSEST(word + + (FIELD_GET(GENMASK(12, 9), + ret) + 1) * + MP2869_OVUV_DELTA_SCALE, + MP2869_OVUV_LIMIT_SCALE))); + else + ret = pmbus_write_word_data(client, page, reg, + (ret & ~GENMASK(8, 0)) | + FIELD_PREP(GENMASK(8, 0), + DIV_ROUND_CLOSEST(word, + MP2869_OVUV_LIMIT_SCALE))); + break; + case PMBUS_VOUT_OV_FAULT_LIMIT: + /* + * The MP2869 PMBUS_VOUT_OV_FAULT_LIMIT[8:0] is the limit value, + * and bit9-bit15 should not be changed. + */ + ret = pmbus_read_word_data(client, page, 0xff, reg); + if (ret < 0) + return ret; + + if (FIELD_GET(GENMASK(12, 9), ret)) + ret = pmbus_write_word_data(client, page, reg, + (ret & ~GENMASK(8, 0)) | + FIELD_PREP(GENMASK(8, 0), + DIV_ROUND_CLOSEST(word - + (FIELD_GET(GENMASK(12, 9), + ret) + 1) * + MP2869_OVUV_DELTA_SCALE, + MP2869_OVUV_LIMIT_SCALE))); + else + ret = pmbus_write_word_data(client, page, reg, + (ret & ~GENMASK(8, 0)) | + FIELD_PREP(GENMASK(8, 0), + DIV_ROUND_CLOSEST(word, + MP2869_OVUV_LIMIT_SCALE))); + break; + case PMBUS_OT_FAULT_LIMIT: + case PMBUS_OT_WARN_LIMIT: + /* + * If the tsns digital fault is enabled, the PMBUS_OT_FAULT_LIMIT and + * PMBUS_OT_WARN_LIMIT can not be written. + */ + if (data->mfr_thwn_flt_en) + return -EINVAL; + + /* + * The MP2869 scale of MP2869 PMBUS_OT_FAULT_LIMIT and PMBUS_OT_WARN_LIMIT + * have 40°C offset. The bit0-bit7 is the limit value, and bit8-bit15 + * should not be changed. + */ + ret = pmbus_read_word_data(client, page, 0xff, reg); + if (ret < 0) + return ret; + + ret = pmbus_write_word_data(client, page, reg, + (ret & ~GENMASK(7, 0)) | + FIELD_PREP(GENMASK(7, 0), + word + MP2869_TEMP_LIMIT_OFFSET)); + break; + case PMBUS_VIN_OV_FAULT_LIMIT: + /* + * The MP2869 PMBUS_VIN_OV_FAULT_LIMIT[7:0] is the limit value, and bit8-bit15 + * should not be changed. The scale of PMBUS_VIN_OV_FAULT_LIMIT is 125mV/Lsb, + * but the vin scale is set to 31.25mV/Lsb(using r/m/b scale), so the word data + * should divide by MP2869_VIN_OV_FAULT_GAIN(4) + */ + ret = pmbus_read_word_data(client, page, 0xff, reg); + if (ret < 0) + return ret; + + ret = pmbus_write_word_data(client, page, reg, + (ret & ~GENMASK(7, 0)) | + FIELD_PREP(GENMASK(7, 0), + DIV_ROUND_CLOSEST(word, + MP2869_VIN_OV_FAULT_GAIN))); + break; + case PMBUS_VIN_UV_WARN_LIMIT: + case PMBUS_VIN_UV_FAULT_LIMIT: + /* + * The PMBUS_VIN_UV_LIMIT[9:0] is the limit value, and bit10-bit15 should + * not be changed. The scale of PMBUS_VIN_UV_LIMIT is 31.25mV/Lsb, and the + * vin scale is set to 31.25mV/Lsb(using r/m/b scale), so the word data can + * be written directly. + */ + ret = pmbus_read_word_data(client, page, 0xff, reg); + if (ret < 0) + return ret; + + ret = pmbus_write_word_data(client, page, reg, + (ret & ~GENMASK(9, 0)) | + FIELD_PREP(GENMASK(9, 0), + word)); + break; + case PMBUS_IOUT_OC_FAULT_LIMIT: + case PMBUS_IOUT_OC_WARN_LIMIT: + ret = pmbus_write_word_data(client, page, reg, + DIV_ROUND_CLOSEST(word * MP2869_READ_IOUT_DIV, + MP2869_IOUT_LIMIT_UINT * + data->iout_scale[page])); + break; + case PMBUS_POUT_OP_WARN_LIMIT: + /* + * The POUT_OP_WARN_LIMIT[11:0] is the limit value, and bit12-bit15 should + * not be changed. The scale of POUT_OP_WARN_LIMIT is 2W/Lsb. + */ + ret = pmbus_read_word_data(client, page, 0xff, reg); + if (ret < 0) + return ret; + + ret = pmbus_write_word_data(client, page, reg, + (ret & ~GENMASK(11, 0)) | + FIELD_PREP(GENMASK(11, 0), + DIV_ROUND_CLOSEST(word, + MP2869_POUT_OP_GAIN))); + break; + default: + ret = -EINVAL; + break; + } + + return ret; +} + +static int mp2869_identify(struct i2c_client *client, struct pmbus_driver_info *info) +{ + int ret; + + /* Identify whether tsns digital fault is enable */ + ret = mp2869_identify_thwn_flt(client, info, 1); + if (ret < 0) + return 0; + + /* Identify vout scale for rail1. */ + ret = mp2869_identify_vout_scale(client, info, 0); + if (ret < 0) + return ret; + + /* Identify vout scale for rail2. */ + ret = mp2869_identify_vout_scale(client, info, 1); + if (ret < 0) + return ret; + + /* Identify iout scale for rail 1. */ + ret = mp2869_identify_iout_scale(client, info, 0); + if (ret < 0) + return ret; + + /* Identify iout scale for rail 2. */ + return mp2869_identify_iout_scale(client, info, 1); +} + +static const struct pmbus_driver_info mp2869_info = { + .pages = MP2869_PAGE_NUM, + .format[PSC_VOLTAGE_IN] = direct, + .format[PSC_CURRENT_IN] = linear, + .format[PSC_CURRENT_OUT] = direct, + .format[PSC_TEMPERATURE] = direct, + .format[PSC_POWER] = direct, + .format[PSC_VOLTAGE_OUT] = direct, + + .m[PSC_VOLTAGE_IN] = 32, + .R[PSC_VOLTAGE_IN] = 0, + .b[PSC_VOLTAGE_IN] = 0, + + .m[PSC_VOLTAGE_OUT] = 1, + .R[PSC_VOLTAGE_OUT] = 3, + .b[PSC_VOLTAGE_OUT] = 0, + + .m[PSC_CURRENT_OUT] = 1, + .R[PSC_CURRENT_OUT] = 0, + .b[PSC_CURRENT_OUT] = 0, + + .m[PSC_TEMPERATURE] = 1, + .R[PSC_TEMPERATURE] = 0, + .b[PSC_TEMPERATURE] = 0, + + .m[PSC_POWER] = 1, + .R[PSC_POWER] = 0, + .b[PSC_POWER] = 0, + + .func[0] = MP2869_RAIL1_FUNC, + .func[1] = MP2869_RAIL2_FUNC, + .read_word_data = mp2869_read_word_data, + .write_word_data = mp2869_write_word_data, + .read_byte_data = mp2869_read_byte_data, + .identify = mp2869_identify, +}; + +static int mp2869_probe(struct i2c_client *client) +{ + struct pmbus_driver_info *info; + struct mp2869_data *data; + + data = devm_kzalloc(&client->dev, sizeof(struct mp2869_data), + GFP_KERNEL); + if (!data) + return -ENOMEM; + + memcpy(&data->info, &mp2869_info, sizeof(*info)); + info = &data->info; + + return pmbus_do_probe(client, info); +} + +static const struct i2c_device_id mp2869_id[] = { + {"mp2869", 0}, + {"mp29608", 1}, + {"mp29612", 2}, + {"mp29816", 3}, + {} +}; +MODULE_DEVICE_TABLE(i2c, mp2869_id); + +static const struct of_device_id __maybe_unused mp2869_of_match[] = { + {.compatible = "mps,mp2869", .data = (void *)0}, + {.compatible = "mps,mp29608", .data = (void *)1}, + {.compatible = "mps,mp29612", .data = (void *)2}, + {.compatible = "mps,mp29816", .data = (void *)3}, + {} +}; +MODULE_DEVICE_TABLE(of, mp2869_of_match); + +static struct i2c_driver mp2869_driver = { + .driver = { + .name = "mp2869", + .of_match_table = mp2869_of_match, + }, + .probe = mp2869_probe, + .id_table = mp2869_id, +}; + +module_i2c_driver(mp2869_driver); + +MODULE_AUTHOR("Wensheng Wang <wenswang@yeah.net>"); +MODULE_DESCRIPTION("PMBus driver for MPS MP2869"); +MODULE_LICENSE("GPL"); +MODULE_IMPORT_NS("PMBUS"); |