diff options
Diffstat (limited to 'drivers/hwmon/pmbus/ltc2978.c')
| -rw-r--r-- | drivers/hwmon/pmbus/ltc2978.c | 482 |
1 files changed, 365 insertions, 117 deletions
diff --git a/drivers/hwmon/pmbus/ltc2978.c b/drivers/hwmon/pmbus/ltc2978.c index 0835050ec245..58b789c28b48 100644 --- a/drivers/hwmon/pmbus/ltc2978.c +++ b/drivers/hwmon/pmbus/ltc2978.c @@ -1,9 +1,9 @@ /* - * Hardware monitoring driver for LTC2974, LTC2977, LTC2978, LTC3880, - * LTC3883, and LTM4676 + * Hardware monitoring driver for LTC2978 and compatible chips. * * Copyright (c) 2011 Ericsson AB. - * Copyright (c) 2013, 2014 Guenter Roeck + * Copyright (c) 2013, 2014, 2015 Guenter Roeck + * Copyright (c) 2015 Linear Technology * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by @@ -16,6 +16,8 @@ * GNU General Public License for more details. */ +#include <linux/delay.h> +#include <linux/jiffies.h> #include <linux/kernel.h> #include <linux/module.h> #include <linux/init.h> @@ -25,49 +27,71 @@ #include <linux/regulator/driver.h> #include "pmbus.h" -enum chips { ltc2974, ltc2977, ltc2978, ltc3880, ltc3883, ltm4676 }; +enum chips { ltc2974, ltc2975, ltc2977, ltc2978, ltc2980, ltc3880, ltc3882, + ltc3883, ltc3886, ltc3887, ltm2987, ltm4675, ltm4676 }; /* Common for all chips */ #define LTC2978_MFR_VOUT_PEAK 0xdd #define LTC2978_MFR_VIN_PEAK 0xde #define LTC2978_MFR_TEMPERATURE_PEAK 0xdf -#define LTC2978_MFR_SPECIAL_ID 0xe7 +#define LTC2978_MFR_SPECIAL_ID 0xe7 /* Undocumented on LTC3882 */ +#define LTC2978_MFR_COMMON 0xef -/* LTC2974, LCT2977, and LTC2978 */ +/* LTC2974, LTC2975, LCT2977, LTC2980, LTC2978, and LTM2987 */ #define LTC2978_MFR_VOUT_MIN 0xfb #define LTC2978_MFR_VIN_MIN 0xfc #define LTC2978_MFR_TEMPERATURE_MIN 0xfd -/* LTC2974 only */ +/* LTC2974, LTC2975 */ #define LTC2974_MFR_IOUT_PEAK 0xd7 #define LTC2974_MFR_IOUT_MIN 0xd8 -/* LTC3880, LTC3883, and LTM4676 */ +/* LTC3880, LTC3882, LTC3883, LTC3887, LTM4675, and LTM4676 */ #define LTC3880_MFR_IOUT_PEAK 0xd7 #define LTC3880_MFR_CLEAR_PEAKS 0xe3 #define LTC3880_MFR_TEMPERATURE2_PEAK 0xf4 -/* LTC3883 only */ +/* LTC3883 and LTC3886 only */ #define LTC3883_MFR_IIN_PEAK 0xe1 -#define LTC2974_ID_REV1 0x0212 -#define LTC2974_ID_REV2 0x0213 +/* LTC2975 only */ +#define LTC2975_MFR_IIN_PEAK 0xc4 +#define LTC2975_MFR_IIN_MIN 0xc5 +#define LTC2975_MFR_PIN_PEAK 0xc6 +#define LTC2975_MFR_PIN_MIN 0xc7 + +#define LTC2978_ID_MASK 0xfff0 + +#define LTC2974_ID 0x0210 +#define LTC2975_ID 0x0220 #define LTC2977_ID 0x0130 -#define LTC2978_ID_REV1 0x0121 -#define LTC2978_ID_REV2 0x0122 -#define LTC2978A_ID 0x0124 -#define LTC3880_ID 0x4000 -#define LTC3880_ID_MASK 0xff00 +#define LTC2978_ID_REV1 0x0110 /* Early revision */ +#define LTC2978_ID_REV2 0x0120 +#define LTC2980_ID_A 0x8030 /* A/B for two die IDs */ +#define LTC2980_ID_B 0x8040 +#define LTC3880_ID 0x4020 +#define LTC3882_ID 0x4200 +#define LTC3882_ID_D1 0x4240 /* Dash 1 */ #define LTC3883_ID 0x4300 -#define LTC3883_ID_MASK 0xff00 -#define LTM4676_ID 0x4480 /* datasheet claims 0x440X */ -#define LTM4676_ID_MASK 0xfff0 +#define LTC3886_ID 0x4600 +#define LTC3887_ID 0x4700 +#define LTM2987_ID_A 0x8010 /* A/B for two die IDs */ +#define LTM2987_ID_B 0x8020 +#define LTM4675_ID 0x47a0 +#define LTM4676_ID_REV1 0x4400 +#define LTM4676_ID_REV2 0x4480 +#define LTM4676A_ID 0x47e0 #define LTC2974_NUM_PAGES 4 #define LTC2978_NUM_PAGES 8 #define LTC3880_NUM_PAGES 2 #define LTC3883_NUM_PAGES 1 +#define LTC_POLL_TIMEOUT 100 /* in milli-seconds */ + +#define LTC_NOT_BUSY BIT(5) +#define LTC_NOT_PENDING BIT(4) + /* * LTC2978 clears peak data whenever the CLEAR_FAULTS command is executed, which * happens pretty much each time chip data is updated. Raw peak data therefore @@ -82,13 +106,91 @@ struct ltc2978_data { u16 temp_min[LTC2974_NUM_PAGES], temp_max[LTC2974_NUM_PAGES]; u16 vout_min[LTC2978_NUM_PAGES], vout_max[LTC2978_NUM_PAGES]; u16 iout_min[LTC2974_NUM_PAGES], iout_max[LTC2974_NUM_PAGES]; - u16 iin_max; + u16 iin_min, iin_max; + u16 pin_min, pin_max; u16 temp2_max; struct pmbus_driver_info info; + u32 features; }; - #define to_ltc2978_data(x) container_of(x, struct ltc2978_data, info) +#define FEAT_CLEAR_PEAKS BIT(0) +#define FEAT_NEEDS_POLLING BIT(1) + +#define has_clear_peaks(d) ((d)->features & FEAT_CLEAR_PEAKS) +#define needs_polling(d) ((d)->features & FEAT_NEEDS_POLLING) + +static int ltc_wait_ready(struct i2c_client *client) +{ + unsigned long timeout = jiffies + msecs_to_jiffies(LTC_POLL_TIMEOUT); + const struct pmbus_driver_info *info = pmbus_get_driver_info(client); + struct ltc2978_data *data = to_ltc2978_data(info); + int status; + u8 mask; + + if (!needs_polling(data)) + return 0; + + /* + * LTC3883 does not support LTC_NOT_PENDING, even though + * the datasheet claims that it does. + */ + mask = LTC_NOT_BUSY; + if (data->id != ltc3883) + mask |= LTC_NOT_PENDING; + + do { + status = pmbus_read_byte_data(client, 0, LTC2978_MFR_COMMON); + if (status == -EBADMSG || status == -ENXIO) { + /* PEC error or NACK: chip may be busy, try again */ + usleep_range(50, 100); + continue; + } + if (status < 0) + return status; + + if ((status & mask) == mask) + return 0; + + usleep_range(50, 100); + } while (time_before(jiffies, timeout)); + + return -ETIMEDOUT; +} + +static int ltc_read_word_data(struct i2c_client *client, int page, int reg) +{ + int ret; + + ret = ltc_wait_ready(client); + if (ret < 0) + return ret; + + return pmbus_read_word_data(client, page, reg); +} + +static int ltc_read_byte_data(struct i2c_client *client, int page, int reg) +{ + int ret; + + ret = ltc_wait_ready(client); + if (ret < 0) + return ret; + + return pmbus_read_byte_data(client, page, reg); +} + +static int ltc_write_byte(struct i2c_client *client, int page, u8 byte) +{ + int ret; + + ret = ltc_wait_ready(client); + if (ret < 0) + return ret; + + return pmbus_write_byte(client, page, byte); +} + static inline int lin11_to_val(int data) { s16 e = ((s16)data) >> 11; @@ -102,6 +204,34 @@ static inline int lin11_to_val(int data) return (e < 0 ? m >> -e : m << e); } +static int ltc_get_max(struct ltc2978_data *data, struct i2c_client *client, + int page, int reg, u16 *pmax) +{ + int ret; + + ret = ltc_read_word_data(client, page, reg); + if (ret >= 0) { + if (lin11_to_val(ret) > lin11_to_val(*pmax)) + *pmax = ret; + ret = *pmax; + } + return ret; +} + +static int ltc_get_min(struct ltc2978_data *data, struct i2c_client *client, + int page, int reg, u16 *pmin) +{ + int ret; + + ret = ltc_read_word_data(client, page, reg); + if (ret >= 0) { + if (lin11_to_val(ret) < lin11_to_val(*pmin)) + *pmin = ret; + ret = *pmin; + } + return ret; +} + static int ltc2978_read_word_data_common(struct i2c_client *client, int page, int reg) { @@ -111,15 +241,11 @@ static int ltc2978_read_word_data_common(struct i2c_client *client, int page, switch (reg) { case PMBUS_VIRT_READ_VIN_MAX: - ret = pmbus_read_word_data(client, page, LTC2978_MFR_VIN_PEAK); - if (ret >= 0) { - if (lin11_to_val(ret) > lin11_to_val(data->vin_max)) - data->vin_max = ret; - ret = data->vin_max; - } + ret = ltc_get_max(data, client, page, LTC2978_MFR_VIN_PEAK, + &data->vin_max); break; case PMBUS_VIRT_READ_VOUT_MAX: - ret = pmbus_read_word_data(client, page, LTC2978_MFR_VOUT_PEAK); + ret = ltc_read_word_data(client, page, LTC2978_MFR_VOUT_PEAK); if (ret >= 0) { /* * VOUT is 16 bit unsigned with fixed exponent, @@ -131,14 +257,9 @@ static int ltc2978_read_word_data_common(struct i2c_client *client, int page, } break; case PMBUS_VIRT_READ_TEMP_MAX: - ret = pmbus_read_word_data(client, page, - LTC2978_MFR_TEMPERATURE_PEAK); - if (ret >= 0) { - if (lin11_to_val(ret) - > lin11_to_val(data->temp_max[page])) - data->temp_max[page] = ret; - ret = data->temp_max[page]; - } + ret = ltc_get_max(data, client, page, + LTC2978_MFR_TEMPERATURE_PEAK, + &data->temp_max[page]); break; case PMBUS_VIRT_RESET_VOUT_HISTORY: case PMBUS_VIRT_RESET_VIN_HISTORY: @@ -146,6 +267,9 @@ static int ltc2978_read_word_data_common(struct i2c_client *client, int page, ret = 0; break; default: + ret = ltc_wait_ready(client); + if (ret < 0) + return ret; ret = -ENODATA; break; } @@ -160,15 +284,11 @@ static int ltc2978_read_word_data(struct i2c_client *client, int page, int reg) switch (reg) { case PMBUS_VIRT_READ_VIN_MIN: - ret = pmbus_read_word_data(client, page, LTC2978_MFR_VIN_MIN); - if (ret >= 0) { - if (lin11_to_val(ret) < lin11_to_val(data->vin_min)) - data->vin_min = ret; - ret = data->vin_min; - } + ret = ltc_get_min(data, client, page, LTC2978_MFR_VIN_MIN, + &data->vin_min); break; case PMBUS_VIRT_READ_VOUT_MIN: - ret = pmbus_read_word_data(client, page, LTC2978_MFR_VOUT_MIN); + ret = ltc_read_word_data(client, page, LTC2978_MFR_VOUT_MIN); if (ret >= 0) { /* * VOUT_MIN is known to not be supported on some lots @@ -184,14 +304,9 @@ static int ltc2978_read_word_data(struct i2c_client *client, int page, int reg) } break; case PMBUS_VIRT_READ_TEMP_MIN: - ret = pmbus_read_word_data(client, page, - LTC2978_MFR_TEMPERATURE_MIN); - if (ret >= 0) { - if (lin11_to_val(ret) - < lin11_to_val(data->temp_min[page])) - data->temp_min[page] = ret; - ret = data->temp_min[page]; - } + ret = ltc_get_min(data, client, page, + LTC2978_MFR_TEMPERATURE_MIN, + &data->temp_min[page]); break; case PMBUS_VIRT_READ_IOUT_MAX: case PMBUS_VIRT_RESET_IOUT_HISTORY: @@ -214,22 +329,12 @@ static int ltc2974_read_word_data(struct i2c_client *client, int page, int reg) switch (reg) { case PMBUS_VIRT_READ_IOUT_MAX: - ret = pmbus_read_word_data(client, page, LTC2974_MFR_IOUT_PEAK); - if (ret >= 0) { - if (lin11_to_val(ret) - > lin11_to_val(data->iout_max[page])) - data->iout_max[page] = ret; - ret = data->iout_max[page]; - } + ret = ltc_get_max(data, client, page, LTC2974_MFR_IOUT_PEAK, + &data->iout_max[page]); break; case PMBUS_VIRT_READ_IOUT_MIN: - ret = pmbus_read_word_data(client, page, LTC2974_MFR_IOUT_MIN); - if (ret >= 0) { - if (lin11_to_val(ret) - < lin11_to_val(data->iout_min[page])) - data->iout_min[page] = ret; - ret = data->iout_min[page]; - } + ret = ltc_get_min(data, client, page, LTC2974_MFR_IOUT_MIN, + &data->iout_min[page]); break; case PMBUS_VIRT_RESET_IOUT_HISTORY: ret = 0; @@ -241,6 +346,40 @@ static int ltc2974_read_word_data(struct i2c_client *client, int page, int reg) return ret; } +static int ltc2975_read_word_data(struct i2c_client *client, int page, int reg) +{ + const struct pmbus_driver_info *info = pmbus_get_driver_info(client); + struct ltc2978_data *data = to_ltc2978_data(info); + int ret; + + switch (reg) { + case PMBUS_VIRT_READ_IIN_MAX: + ret = ltc_get_max(data, client, page, LTC2975_MFR_IIN_PEAK, + &data->iin_max); + break; + case PMBUS_VIRT_READ_IIN_MIN: + ret = ltc_get_min(data, client, page, LTC2975_MFR_IIN_MIN, + &data->iin_min); + break; + case PMBUS_VIRT_READ_PIN_MAX: + ret = ltc_get_max(data, client, page, LTC2975_MFR_PIN_PEAK, + &data->pin_max); + break; + case PMBUS_VIRT_READ_PIN_MIN: + ret = ltc_get_min(data, client, page, LTC2975_MFR_PIN_MIN, + &data->pin_min); + break; + case PMBUS_VIRT_RESET_IIN_HISTORY: + case PMBUS_VIRT_RESET_PIN_HISTORY: + ret = 0; + break; + default: + ret = ltc2978_read_word_data(client, page, reg); + break; + } + return ret; +} + static int ltc3880_read_word_data(struct i2c_client *client, int page, int reg) { const struct pmbus_driver_info *info = pmbus_get_driver_info(client); @@ -249,22 +388,13 @@ static int ltc3880_read_word_data(struct i2c_client *client, int page, int reg) switch (reg) { case PMBUS_VIRT_READ_IOUT_MAX: - ret = pmbus_read_word_data(client, page, LTC3880_MFR_IOUT_PEAK); - if (ret >= 0) { - if (lin11_to_val(ret) - > lin11_to_val(data->iout_max[page])) - data->iout_max[page] = ret; - ret = data->iout_max[page]; - } + ret = ltc_get_max(data, client, page, LTC3880_MFR_IOUT_PEAK, + &data->iout_max[page]); break; case PMBUS_VIRT_READ_TEMP2_MAX: - ret = pmbus_read_word_data(client, page, - LTC3880_MFR_TEMPERATURE2_PEAK); - if (ret >= 0) { - if (lin11_to_val(ret) > lin11_to_val(data->temp2_max)) - data->temp2_max = ret; - ret = data->temp2_max; - } + ret = ltc_get_max(data, client, page, + LTC3880_MFR_TEMPERATURE2_PEAK, + &data->temp2_max); break; case PMBUS_VIRT_READ_VIN_MIN: case PMBUS_VIRT_READ_VOUT_MIN: @@ -290,13 +420,8 @@ static int ltc3883_read_word_data(struct i2c_client *client, int page, int reg) switch (reg) { case PMBUS_VIRT_READ_IIN_MAX: - ret = pmbus_read_word_data(client, page, LTC3883_MFR_IIN_PEAK); - if (ret >= 0) { - if (lin11_to_val(ret) - > lin11_to_val(data->iin_max)) - data->iin_max = ret; - ret = data->iin_max; - } + ret = ltc_get_max(data, client, page, LTC3883_MFR_IIN_PEAK, + &data->iin_max); break; case PMBUS_VIRT_RESET_IIN_HISTORY: ret = 0; @@ -308,15 +433,15 @@ static int ltc3883_read_word_data(struct i2c_client *client, int page, int reg) return ret; } -static int ltc2978_clear_peaks(struct i2c_client *client, int page, - enum chips id) +static int ltc2978_clear_peaks(struct ltc2978_data *data, + struct i2c_client *client, int page) { int ret; - if (id == ltc3880 || id == ltc3883) - ret = pmbus_write_byte(client, 0, LTC3880_MFR_CLEAR_PEAKS); + if (has_clear_peaks(data)) + ret = ltc_write_byte(client, 0, LTC3880_MFR_CLEAR_PEAKS); else - ret = pmbus_write_byte(client, page, PMBUS_CLEAR_FAULTS); + ret = ltc_write_byte(client, page, PMBUS_CLEAR_FAULTS); return ret; } @@ -331,33 +456,42 @@ static int ltc2978_write_word_data(struct i2c_client *client, int page, switch (reg) { case PMBUS_VIRT_RESET_IIN_HISTORY: data->iin_max = 0x7c00; - ret = ltc2978_clear_peaks(client, page, data->id); + data->iin_min = 0x7bff; + ret = ltc2978_clear_peaks(data, client, 0); + break; + case PMBUS_VIRT_RESET_PIN_HISTORY: + data->pin_max = 0x7c00; + data->pin_min = 0x7bff; + ret = ltc2978_clear_peaks(data, client, 0); break; case PMBUS_VIRT_RESET_IOUT_HISTORY: data->iout_max[page] = 0x7c00; data->iout_min[page] = 0xfbff; - ret = ltc2978_clear_peaks(client, page, data->id); + ret = ltc2978_clear_peaks(data, client, page); break; case PMBUS_VIRT_RESET_TEMP2_HISTORY: data->temp2_max = 0x7c00; - ret = ltc2978_clear_peaks(client, page, data->id); + ret = ltc2978_clear_peaks(data, client, page); break; case PMBUS_VIRT_RESET_VOUT_HISTORY: data->vout_min[page] = 0xffff; data->vout_max[page] = 0; - ret = ltc2978_clear_peaks(client, page, data->id); + ret = ltc2978_clear_peaks(data, client, page); break; case PMBUS_VIRT_RESET_VIN_HISTORY: data->vin_min = 0x7bff; data->vin_max = 0x7c00; - ret = ltc2978_clear_peaks(client, page, data->id); + ret = ltc2978_clear_peaks(data, client, page); break; case PMBUS_VIRT_RESET_TEMP_HISTORY: data->temp_min[page] = 0x7bff; data->temp_max[page] = 0x7c00; - ret = ltc2978_clear_peaks(client, page, data->id); + ret = ltc2978_clear_peaks(data, client, page); break; default: + ret = ltc_wait_ready(client); + if (ret < 0) + return ret; ret = -ENODATA; break; } @@ -366,10 +500,17 @@ static int ltc2978_write_word_data(struct i2c_client *client, int page, static const struct i2c_device_id ltc2978_id[] = { {"ltc2974", ltc2974}, + {"ltc2975", ltc2975}, {"ltc2977", ltc2977}, {"ltc2978", ltc2978}, + {"ltc2980", ltc2980}, {"ltc3880", ltc3880}, + {"ltc3882", ltc3882}, {"ltc3883", ltc3883}, + {"ltc3886", ltc3886}, + {"ltc3887", ltc3887}, + {"ltm2987", ltm2987}, + {"ltm4675", ltm4675}, {"ltm4676", ltm4676}, {} }; @@ -388,10 +529,74 @@ static const struct regulator_desc ltc2978_reg_desc[] = { }; #endif /* CONFIG_SENSORS_LTC2978_REGULATOR */ +static int ltc2978_get_id(struct i2c_client *client) +{ + int chip_id; + + chip_id = i2c_smbus_read_word_data(client, LTC2978_MFR_SPECIAL_ID); + if (chip_id < 0) { + const struct i2c_device_id *id; + u8 buf[I2C_SMBUS_BLOCK_MAX]; + int ret; + + if (!i2c_check_functionality(client->adapter, + I2C_FUNC_SMBUS_READ_BLOCK_DATA)) + return -ENODEV; + + ret = i2c_smbus_read_block_data(client, PMBUS_MFR_ID, buf); + if (ret < 0) + return ret; + if (ret < 3 || strncmp(buf, "LTC", 3)) + return -ENODEV; + + ret = i2c_smbus_read_block_data(client, PMBUS_MFR_MODEL, buf); + if (ret < 0) + return ret; + for (id = <c2978_id[0]; strlen(id->name); id++) { + if (!strncasecmp(id->name, buf, strlen(id->name))) + return (int)id->driver_data; + } + return -ENODEV; + } + + chip_id &= LTC2978_ID_MASK; + + if (chip_id == LTC2974_ID) + return ltc2974; + else if (chip_id == LTC2975_ID) + return ltc2975; + else if (chip_id == LTC2977_ID) + return ltc2977; + else if (chip_id == LTC2978_ID_REV1 || chip_id == LTC2978_ID_REV2) + return ltc2978; + else if (chip_id == LTC2980_ID_A || chip_id == LTC2980_ID_B) + return ltc2980; + else if (chip_id == LTC3880_ID) + return ltc3880; + else if (chip_id == LTC3882_ID || chip_id == LTC3882_ID_D1) + return ltc3882; + else if (chip_id == LTC3883_ID) + return ltc3883; + else if (chip_id == LTC3886_ID) + return ltc3886; + else if (chip_id == LTC3887_ID) + return ltc3887; + else if (chip_id == LTM2987_ID_A || chip_id == LTM2987_ID_B) + return ltm2987; + else if (chip_id == LTM4675_ID) + return ltm4675; + else if (chip_id == LTM4676_ID_REV1 || chip_id == LTM4676_ID_REV2 || + chip_id == LTM4676A_ID) + return ltm4676; + + dev_err(&client->dev, "Unsupported chip ID 0x%x\n", chip_id); + return -ENODEV; +} + static int ltc2978_probe(struct i2c_client *client, const struct i2c_device_id *id) { - int chip_id, i; + int i, chip_id; struct ltc2978_data *data; struct pmbus_driver_info *info; @@ -404,27 +609,11 @@ static int ltc2978_probe(struct i2c_client *client, if (!data) return -ENOMEM; - chip_id = i2c_smbus_read_word_data(client, LTC2978_MFR_SPECIAL_ID); + chip_id = ltc2978_get_id(client); if (chip_id < 0) return chip_id; - if (chip_id == LTC2974_ID_REV1 || chip_id == LTC2974_ID_REV2) { - data->id = ltc2974; - } else if (chip_id == LTC2977_ID) { - data->id = ltc2977; - } else if (chip_id == LTC2978_ID_REV1 || chip_id == LTC2978_ID_REV2 || - chip_id == LTC2978A_ID) { - data->id = ltc2978; - } else if ((chip_id & LTC3880_ID_MASK) == LTC3880_ID) { - data->id = ltc3880; - } else if ((chip_id & LTC3883_ID_MASK) == LTC3883_ID) { - data->id = ltc3883; - } else if ((chip_id & LTM4676_ID_MASK) == LTM4676_ID) { - data->id = ltm4676; - } else { - dev_err(&client->dev, "Unsupported chip ID 0x%x\n", chip_id); - return -ENODEV; - } + data->id = chip_id; if (data->id != id->driver_data) dev_warn(&client->dev, "Device mismatch: Configured %s, detected %s\n", @@ -433,6 +622,9 @@ static int ltc2978_probe(struct i2c_client *client, info = &data->info; info->write_word_data = ltc2978_write_word_data; + info->write_byte = ltc_write_byte; + info->read_word_data = ltc_read_word_data; + info->read_byte_data = ltc_read_byte_data; data->vin_min = 0x7bff; data->vin_max = 0x7c00; @@ -461,8 +653,23 @@ static int ltc2978_probe(struct i2c_client *client, | PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT; } break; + case ltc2975: + info->read_word_data = ltc2975_read_word_data; + info->pages = LTC2974_NUM_PAGES; + info->func[0] = PMBUS_HAVE_IIN | PMBUS_HAVE_PIN + | PMBUS_HAVE_VIN | PMBUS_HAVE_STATUS_INPUT + | PMBUS_HAVE_TEMP2; + for (i = 0; i < info->pages; i++) { + info->func[i] |= PMBUS_HAVE_VOUT + | PMBUS_HAVE_STATUS_VOUT | PMBUS_HAVE_POUT + | PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP + | PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT; + } + break; case ltc2977: case ltc2978: + case ltc2980: + case ltm2987: info->read_word_data = ltc2978_read_word_data; info->pages = LTC2978_NUM_PAGES; info->func[0] = PMBUS_HAVE_VIN | PMBUS_HAVE_STATUS_INPUT @@ -474,7 +681,10 @@ static int ltc2978_probe(struct i2c_client *client, } break; case ltc3880: + case ltc3887: + case ltm4675: case ltm4676: + data->features |= FEAT_CLEAR_PEAKS | FEAT_NEEDS_POLLING; info->read_word_data = ltc3880_read_word_data; info->pages = LTC3880_NUM_PAGES; info->func[0] = PMBUS_HAVE_VIN | PMBUS_HAVE_IIN @@ -488,7 +698,23 @@ static int ltc2978_probe(struct i2c_client *client, | PMBUS_HAVE_POUT | PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP; break; + case ltc3882: + data->features |= FEAT_CLEAR_PEAKS | FEAT_NEEDS_POLLING; + info->read_word_data = ltc3880_read_word_data; + info->pages = LTC3880_NUM_PAGES; + info->func[0] = PMBUS_HAVE_VIN + | PMBUS_HAVE_STATUS_INPUT + | PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT + | PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT + | PMBUS_HAVE_POUT | PMBUS_HAVE_TEMP + | PMBUS_HAVE_TEMP2 | PMBUS_HAVE_STATUS_TEMP; + info->func[1] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT + | PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT + | PMBUS_HAVE_POUT + | PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP; + break; case ltc3883: + data->features |= FEAT_CLEAR_PEAKS | FEAT_NEEDS_POLLING; info->read_word_data = ltc3883_read_word_data; info->pages = LTC3883_NUM_PAGES; info->func[0] = PMBUS_HAVE_VIN | PMBUS_HAVE_IIN @@ -498,6 +724,21 @@ static int ltc2978_probe(struct i2c_client *client, | PMBUS_HAVE_PIN | PMBUS_HAVE_POUT | PMBUS_HAVE_TEMP | PMBUS_HAVE_TEMP2 | PMBUS_HAVE_STATUS_TEMP; break; + case ltc3886: + data->features |= FEAT_CLEAR_PEAKS | FEAT_NEEDS_POLLING; + info->read_word_data = ltc3883_read_word_data; + info->pages = LTC3880_NUM_PAGES; + info->func[0] = PMBUS_HAVE_VIN | PMBUS_HAVE_IIN + | PMBUS_HAVE_STATUS_INPUT + | PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT + | PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT + | PMBUS_HAVE_PIN | PMBUS_HAVE_POUT | PMBUS_HAVE_TEMP + | PMBUS_HAVE_TEMP2 | PMBUS_HAVE_STATUS_TEMP; + info->func[1] = PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT + | PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT + | PMBUS_HAVE_POUT + | PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP; + break; default: return -ENODEV; } @@ -517,10 +758,17 @@ static int ltc2978_probe(struct i2c_client *client, #ifdef CONFIG_OF static const struct of_device_id ltc2978_of_match[] = { { .compatible = "lltc,ltc2974" }, + { .compatible = "lltc,ltc2975" }, { .compatible = "lltc,ltc2977" }, { .compatible = "lltc,ltc2978" }, + { .compatible = "lltc,ltc2980" }, { .compatible = "lltc,ltc3880" }, + { .compatible = "lltc,ltc3882" }, { .compatible = "lltc,ltc3883" }, + { .compatible = "lltc,ltc3886" }, + { .compatible = "lltc,ltc3887" }, + { .compatible = "lltc,ltm2987" }, + { .compatible = "lltc,ltm4675" }, { .compatible = "lltc,ltm4676" }, { } }; @@ -540,5 +788,5 @@ static struct i2c_driver ltc2978_driver = { module_i2c_driver(ltc2978_driver); MODULE_AUTHOR("Guenter Roeck"); -MODULE_DESCRIPTION("PMBus driver for LTC2974, LTC2978, LTC3880, LTC3883, and LTM4676"); +MODULE_DESCRIPTION("PMBus driver for LTC2978 and comppatible chips"); MODULE_LICENSE("GPL"); |