/*
- * 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
* 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>
#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
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;
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)
{
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,
}
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:
ret = 0;
break;
default:
+ ret = ltc_wait_ready(client);
+ if (ret < 0)
+ return ret;
ret = -ENODATA;
break;
}
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
}
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:
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;
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);
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:
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;
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;
}
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;
}
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},
{}
};
};
#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;
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",
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;
| 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
}
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
| 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
| 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;
}
#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" },
{ }
};
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");
Code Review / kvmfornfv.git / blobdiff