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hwmon: (xdpe12284) Add support for xdpe11280 

Add support for another Infineon Multi-phase controller chip. The
xdpe11280 uses linear instead of vid data format for VOUT. Detect
VOUT_MODE format during identification and skip the xdpe122 related
adaptions in case it is linear.

Signed-off-by: Marcello Sylvester Bauer <sylv@sylv.io>
Link: https://lore.kernel.org/r/fa6a4b636a05ecb337d132824efca2545188a2a2.1646214248.git.sylv@sylv.io
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
This commit is contained in:
Marcello Sylvester Bauer 2022-03-02 10:49:20 +01:00 committed by Guenter Roeck
parent ff4670ed6e
commit efdab64d88
2 changed files with 26 additions and 7 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

12
Documentation/hwmon/xdpe12284.rst
View File

@ -5,6 +5,10 @@ Kernel driver xdpe122
Supported chips:
* Infineon XDPE11280
Prefix: 'xdpe11280'
* Infineon XDPE12254
Prefix: 'xdpe12254'
@ -20,10 +24,10 @@ Authors:
Description
-----------
This driver implements support for Infineon Multi-phase XDPE122 family
dual loop voltage regulators.
The family includes XDPE12284 and XDPE12254 devices.
The devices from this family complaint with:
This driver implements support for Infineon Multi-phase XDPE112 and XDPE122
family dual loop voltage regulators.
These families include XDPE11280, XDPE12284 and XDPE12254 devices.
The devices from this family compliant with:
- Intel VR13 and VR13HC rev 1.3, IMVP8 rev 1.2 and IMPVP9 rev 1.3 DC-DC
converter specification.

21
drivers/hwmon/pmbus/xdpe12284.c
View File

@ -76,7 +76,22 @@ static int xdpe122_identify(struct i2c_client *client,
struct pmbus_driver_info *info)
{
u8 vout_params;
int i, ret;
int i, ret, vout_mode;
vout_mode = pmbus_read_byte_data(client, 0, PMBUS_VOUT_MODE);
if (vout_mode >= 0 && vout_mode != 0xff) {
switch (vout_mode >> 5) {
case 0:
info->format[PSC_VOLTAGE_OUT] = linear;
return 0;
case 1:
info->format[PSC_VOLTAGE_OUT] = vid;
info->read_word_data = xdpe122_read_word_data;
break;
default:
return -ENODEV;
}
}
for (i = 0; i < XDPE122_PAGE_NUM; i++) {
/* Read the register with VOUT scaling value.*/
@ -110,7 +125,6 @@ static int xdpe122_identify(struct i2c_client *client,
static struct pmbus_driver_info xdpe122_info = {
.pages = XDPE122_PAGE_NUM,
.format[PSC_VOLTAGE_IN] = linear,
.format[PSC_VOLTAGE_OUT] = vid,
.format[PSC_TEMPERATURE] = linear,
.format[PSC_CURRENT_IN] = linear,
.format[PSC_CURRENT_OUT] = linear,
@ -124,7 +138,6 @@ static struct pmbus_driver_info xdpe122_info = {
PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP |
PMBUS_HAVE_POUT | PMBUS_HAVE_PIN | PMBUS_HAVE_STATUS_INPUT,
.identify = xdpe122_identify,
.read_word_data = xdpe122_read_word_data,
};
static int xdpe122_probe(struct i2c_client *client)
@ -140,6 +153,7 @@ static int xdpe122_probe(struct i2c_client *client)
}
static const struct i2c_device_id xdpe122_id[] = {
{"xdpe11280", 0},
{"xdpe12254", 0},
{"xdpe12284", 0},
{}
@ -148,6 +162,7 @@ static const struct i2c_device_id xdpe122_id[] = {
MODULE_DEVICE_TABLE(i2c, xdpe122_id);
static const struct of_device_id __maybe_unused xdpe122_of_match[] = {
{.compatible = "infineon,xdpe11280"},
{.compatible = "infineon,xdpe12254"},
{.compatible = "infineon,xdpe12284"},
{}