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hwmon: (pmbus/tps53679) Add support for TI TPS53676

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Add support for TI TPS53676 controller to the tps53679 pmbus driver

The driver uses the USER_DATA_03 register to figure out how many phases
are enabled and to which channel they are assigned, and sets the number
of pages and phases accordingly.

Signed-off-by: Erik Rosen <erik.rosen@metormote.com>
Link: https://lore.kernel.org/r/20210322193734.75127-3-erik.rosen@metormote.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
This commit is contained in:
Erik Rosen 2021-03-22 20:37:34 +01:00 committed by Guenter Roeck
parent fd1edbd398
commit cb3d37b590
3 changed files with 63 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

13
Documentation/hwmon/tps53679.rst
View File

@ -19,6 +19,14 @@ Supported chips:
Datasheet: https://www.ti.com/lit/gpn/TPS53667
* Texas Instruments TPS53676
Prefix: 'tps53676'
Addresses scanned: -
Datasheet: https://www.ti.com/lit/gpn/TPS53676
* Texas Instruments TPS53679
Prefix: 'tps53679'
@ -136,7 +144,7 @@ power1_input Measured input power.
power[N]_label "pout[1-2]".
- TPS53647, TPS53667: N=2
- TPS53679, TPS53681, TPS53588: N=2,3
- TPS53676, TPS53679, TPS53681, TPS53588: N=2,3
power[N]_input Measured output power.
@ -156,10 +164,11 @@ curr[N]_label "iout[1-2]" or "iout1.[0-5]".
The first digit is the output channel, the second
digit is the phase within the channel. Per-phase
telemetry supported on TPS53681 only.
telemetry supported on TPS53676 and TPS53681 only.
- TPS53647, TPS53667: N=2
- TPS53679, TPS53588: N=2,3
- TPS53676: N=2-8
- TPS53681: N=2-9
curr[N]_input Measured output current.

4
drivers/hwmon/pmbus/Kconfig
View File

@ -285,10 +285,10 @@ config SENSORS_TPS40422
be called tps40422.
config SENSORS_TPS53679
tristate "TI TPS53647, TPS53667, TPS53679, TPS53681, TPS53688"
tristate "TI TPS53647, TPS53667, TPS53676, TPS53679, TPS53681, TPS53688"
help
If you say yes here you get hardware monitoring support for TI
TPS53647, TPS53667, TPS53679, TPS53681, and TPS53688.
TPS53647, TPS53667, TPS53676, TPS53679, TPS53681, and TPS53688.
This driver can also be built as a module. If so, the module will
be called tps53679.

51
drivers/hwmon/pmbus/tps53679.c
View File

@ -16,11 +16,14 @@
#include "pmbus.h"
enum chips {
tps53647, tps53667, tps53679, tps53681, tps53688
tps53647, tps53667, tps53676, tps53679, tps53681, tps53688
};
#define TPS53647_PAGE_NUM 1
#define TPS53676_USER_DATA_03 0xb3
#define TPS53676_MAX_PHASES 7
#define TPS53679_PROT_VR12_5MV 0x01 /* VR12.0 mode, 5-mV DAC */
#define TPS53679_PROT_VR12_5_10MV 0x02 /* VR12.5 mode, 10-mV DAC */
#define TPS53679_PROT_VR13_10MV 0x04 /* VR13.0 mode, 10-mV DAC */
@ -143,6 +146,45 @@ static int tps53681_identify(struct i2c_client *client,
TPS53681_DEVICE_ID);
}
static int tps53676_identify(struct i2c_client *client,
struct pmbus_driver_info *info)
{
u8 buf[I2C_SMBUS_BLOCK_MAX];
int phases_a = 0, phases_b = 0;
int i, ret;
ret = i2c_smbus_read_block_data(client, PMBUS_IC_DEVICE_ID, buf);
if (ret < 0)
return ret;
if (strncmp("TI\x53\x67\x60", buf, 5)) {
dev_err(&client->dev, "Unexpected device ID: %s\n", buf);
return -ENODEV;
}
ret = i2c_smbus_read_block_data(client, TPS53676_USER_DATA_03, buf);
if (ret < 0)
return ret;
if (ret != 24)
return -EIO;
for (i = 0; i < 2 * TPS53676_MAX_PHASES; i += 2) {
if (buf[i + 1] & 0x80) {
if (buf[i] & 0x08)
phases_b++;
else
phases_a++;
}
}
info->format[PSC_VOLTAGE_OUT] = linear;
info->pages = 1;
info->phases[0] = phases_a;
if (phases_b > 0) {
info->pages = 2;
info->phases[1] = phases_b;
}
return 0;
}
static int tps53681_read_word_data(struct i2c_client *client, int page,
int phase, int reg)
{
@ -183,6 +225,7 @@ static struct pmbus_driver_info tps53679_info = {
.pfunc[3] = PMBUS_HAVE_IOUT,
.pfunc[4] = PMBUS_HAVE_IOUT,
.pfunc[5] = PMBUS_HAVE_IOUT,
.pfunc[6] = PMBUS_HAVE_IOUT,
};
static int tps53679_probe(struct i2c_client *client)
@ -206,6 +249,9 @@ static int tps53679_probe(struct i2c_client *client)
info->pages = TPS53647_PAGE_NUM;
info->identify = tps53679_identify;
break;
case tps53676:
info->identify = tps53676_identify;
break;
case tps53679:
case tps53688:
info->pages = TPS53679_PAGE_NUM;
@ -225,8 +271,10 @@ static int tps53679_probe(struct i2c_client *client)
}
static const struct i2c_device_id tps53679_id[] = {
{"bmr474", tps53676},
{"tps53647", tps53647},
{"tps53667", tps53667},
{"tps53676", tps53676},
{"tps53679", tps53679},
{"tps53681", tps53681},
{"tps53688", tps53688},
@ -238,6 +286,7 @@ MODULE_DEVICE_TABLE(i2c, tps53679_id);
static const struct of_device_id __maybe_unused tps53679_of_match[] = {
{.compatible = "ti,tps53647", .data = (void *)tps53647},
{.compatible = "ti,tps53667", .data = (void *)tps53667},
{.compatible = "ti,tps53676", .data = (void *)tps53676},
{.compatible = "ti,tps53679", .data = (void *)tps53679},
{.compatible = "ti,tps53681", .data = (void *)tps53681},
{.compatible = "ti,tps53688", .data = (void *)tps53688},