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hwmon: (pmbus/core) Add support for vid mode detection per page bases

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Add support for VID protocol detection per page bases, instead of
detecting it based on "PMBU_VOUT" readout from page 0 for all the pages
supported by particular device.
The reason that some devices allows to configure different VID modes
per page within the same device.
Patch modifies the field "vrm_version" within the structure
"pmbus_driver_info" to be per page array.

Signed-off-by: Vadim Pasternak <vadimp@mellanox.com>
Link: https://lore.kernel.org/r/20200113150841.17670-2-vadimp@mellanox.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
This commit is contained in:
Vadim Pasternak
2020-01-13 15:08:36 +00:00
committed by Guenter Roeck
parent d9c8ae69b9
commit b9fa0a3acf
6 changed files with 47 additions and 40 deletions
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38
drivers/hwmon/pmbus/pxe1610.c
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@@ -19,26 +19,30 @@
static int pxe1610_identify(struct i2c_client *client,
struct pmbus_driver_info *info)
{
if (pmbus_check_byte_register(client, 0, PMBUS_VOUT_MODE)) {
u8 vout_mode;
int ret;
int i;
/* Read the register with VOUT scaling value.*/
ret = pmbus_read_byte_data(client, 0, PMBUS_VOUT_MODE);
if (ret < 0)
return ret;
for (i = 0; i < PXE1610_NUM_PAGES; i++) {
if (pmbus_check_byte_register(client, i, PMBUS_VOUT_MODE)) {
u8 vout_mode;
int ret;
vout_mode = ret & GENMASK(4, 0);
/* Read the register with VOUT scaling value.*/
ret = pmbus_read_byte_data(client, i, PMBUS_VOUT_MODE);
if (ret < 0)
return ret;
switch (vout_mode) {
case 1:
info->vrm_version = vr12;
break;
case 2:
info->vrm_version = vr13;
break;
default:
return -ENODEV;
vout_mode = ret & GENMASK(4, 0);
switch (vout_mode) {
case 1:
info->vrm_version[i] = vr12;
break;
case 2:
info->vrm_version[i] = vr13;
break;
default:
return -ENODEV;
}
}
}