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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 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> Author: Guenter Roeck <linux@roeck-us.net>
@ -74,14 +82,14 @@ Description
----------- -----------
This driver supports hardware monitoring for Analog Devices ADM1075, ADM1272, This driver supports hardware monitoring for Analog Devices ADM1075, ADM1272,
ADM1273, ADM1275, ADM1276, ADM1278, ADM1281, ADM1293, and ADM1294 Hot-Swap ADM1273, ADM1275, ADM1276, ADM1278, ADM1281, ADM1293, ADM1294, and SQ24905C
Controller and Digital Power Monitors. Hot-Swap Controller and Digital Power Monitors.
ADM1075, ADM1272, ADM1273, ADM1275, ADM1276, ADM1278, ADM1281, ADM1293, and ADM1075, ADM1272, ADM1273, ADM1275, ADM1276, ADM1278, ADM1281, ADM1293,
ADM1294 are hot-swap controllers that allow a circuit board to be removed from ADM1294 and SQ24905C are hot-swap controllers that allow a circuit board to be
or inserted into a live backplane. They also feature current and voltage removed from or inserted into a live backplane. They also feature current and
readback via an integrated 12 bit analog-to-digital converter (ADC), accessed voltage readback via an integrated 12 bit analog-to-digital converter (ADC),
using a PMBus interface. accessed using a PMBus interface.
The driver is a client driver to the core PMBus driver. Please see The driver is a client driver to the core PMBus driver. Please see
Documentation/hwmon/pmbus.rst for details on PMBus client drivers. 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. temp1_reset_history Write any value to reset history.
Temperature attributes are supported on ADM1272, 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 help
If you say yes here you get hardware monitoring support for Analog If you say yes here you get hardware monitoring support for Analog
Devices ADM1075, ADM1272, ADM1273, ADM1275, ADM1276, ADM1278, ADM1281, 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 This driver can also be built as a module. If so, the module will
be called adm1275. be called adm1275.

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

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