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hwmon: (pmbus/adm1275) add sq24905c support 

Add support for sq24905c which is similar to adm1275 and other chips
of the series.

Signed-off-by: ChiShih Tsai <tomtsai764@gmail.com>
Link: https://lore.kernel.org/r/20250806223724.1207-3-tomtsai764@gmail.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
This commit is contained in:
ChiShih Tsai 2025-08-07 06:37:24 +08:00 committed by Guenter Roeck
parent 3331e54692
commit 1ba272bfdf
3 changed files with 26 additions and 12 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

24
Documentation/hwmon/adm1275.rst
View File

@ -67,6 +67,14 @@ Supported chips:
Datasheet: https://www.analog.com/media/en/technical-documentation/data-sheets/ADM1293_1294.pdf
* Silergy SQ24905C
Prefix: 'mc09c'
Addresses scanned: -
Datasheet: https://www.silergy.com/download/downloadFile?id=5669&type=product&ftype=note
Author: Guenter Roeck <linux@roeck-us.net>
@ -74,14 +82,14 @@ Description
-----------
This driver supports hardware monitoring for Analog Devices ADM1075, ADM1272,
ADM1273, ADM1275, ADM1276, ADM1278, ADM1281, ADM1293, and ADM1294 Hot-Swap
Controller and Digital Power Monitors.
ADM1273, ADM1275, ADM1276, ADM1278, ADM1281, ADM1293, ADM1294, and SQ24905C
Hot-Swap Controller and Digital Power Monitors.
ADM1075, ADM1272, ADM1273, ADM1275, ADM1276, ADM1278, ADM1281, ADM1293, and
ADM1294 are hot-swap controllers that allow a circuit board to be removed from
or inserted into a live backplane. They also feature current and voltage
readback via an integrated 12 bit analog-to-digital converter (ADC), accessed
using a PMBus interface.
ADM1075, ADM1272, ADM1273, ADM1275, ADM1276, ADM1278, ADM1281, ADM1293,
ADM1294 and SQ24905C are hot-swap controllers that allow a circuit board to be
removed from or inserted into a live backplane. They also feature current and
voltage readback via an integrated 12 bit analog-to-digital converter (ADC),
accessed using a PMBus interface.
The driver is a client driver to the core PMBus driver. Please see
Documentation/hwmon/pmbus.rst for details on PMBus client drivers.
@ -160,5 +168,5 @@ temp1_highest Highest observed temperature.
temp1_reset_history Write any value to reset history.
Temperature attributes are supported on ADM1272,
ADM1273, ADM1278, and ADM1281.
ADM1273, ADM1278, ADM1281 and SQ24905C.
======================= =======================================================

3
drivers/hwmon/pmbus/Kconfig
View File

@ -52,7 +52,8 @@ config SENSORS_ADM1275
help
If you say yes here you get hardware monitoring support for Analog
Devices ADM1075, ADM1272, ADM1273, ADM1275, ADM1276, ADM1278, ADM1281,
ADM1293, and ADM1294 Hot-Swap Controller and Digital Power Monitors.
ADM1293, ADM1294 and SQ24905C Hot-Swap Controller and
Digital Power Monitors.
This driver can also be built as a module. If so, the module will
be called adm1275.

11
drivers/hwmon/pmbus/adm1275.c
View File

@ -18,7 +18,8 @@
#include <linux/log2.h>
#include "pmbus.h"
enum chips { adm1075, adm1272, adm1273, adm1275, adm1276, adm1278, adm1281, adm1293, adm1294 };
enum chips { adm1075, adm1272, adm1273, adm1275, adm1276, adm1278, adm1281,
adm1293, adm1294, sq24905c };
#define ADM1275_MFR_STATUS_IOUT_WARN2 BIT(0)
#define ADM1293_MFR_STATUS_VAUX_UV_WARN BIT(5)
@ -486,6 +487,7 @@ static const struct i2c_device_id adm1275_id[] = {
{ "adm1281", adm1281 },
{ "adm1293", adm1293 },
{ "adm1294", adm1294 },
{ "mc09c", sq24905c },
{ }
};
MODULE_DEVICE_TABLE(i2c, adm1275_id);
@ -532,7 +534,8 @@ static int adm1275_probe(struct i2c_client *client)
dev_err(&client->dev, "Failed to read Manufacturer ID\n");
return ret;
}
if (ret != 3 || strncmp(block_buffer, "ADI", 3)) {
if ((ret != 3 || strncmp(block_buffer, "ADI", 3)) &&
(ret != 2 || strncmp(block_buffer, "SY", 2))) {
dev_err(&client->dev, "Unsupported Manufacturer ID\n");
return -ENODEV;
}
@ -558,7 +561,8 @@ static int adm1275_probe(struct i2c_client *client)
if (mid->driver_data == adm1272 || mid->driver_data == adm1273 ||
mid->driver_data == adm1278 || mid->driver_data == adm1281 ||
mid->driver_data == adm1293 || mid->driver_data == adm1294)
mid->driver_data == adm1293 || mid->driver_data == adm1294 ||
mid->driver_data == sq24905c)
config_read_fn = i2c_smbus_read_word_data;
else
config_read_fn = i2c_smbus_read_byte_data;
@ -708,6 +712,7 @@ static int adm1275_probe(struct i2c_client *client)
break;
case adm1278:
case adm1281:
case sq24905c:
data->have_vout = true;
data->have_pin_max = true;
data->have_temp_max = true;