From cb3d37b59012d8ed20864799ea8d0a2373967e69 Mon Sep 17 00:00:00 2001 From: Erik Rosen Date: Mon, 22 Mar 2021 20:37:34 +0100 Subject: [PATCH] hwmon: (pmbus/tps53679) Add support for TI TPS53676 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 Link: https://lore.kernel.org/r/20210322193734.75127-3-erik.rosen@metormote.com Signed-off-by: Guenter Roeck --- Documentation/hwmon/tps53679.rst | 13 ++++++-- drivers/hwmon/pmbus/Kconfig | 4 +-- drivers/hwmon/pmbus/tps53679.c | 51 +++++++++++++++++++++++++++++++- 3 files changed, 63 insertions(+), 5 deletions(-) diff --git a/Documentation/hwmon/tps53679.rst b/Documentation/hwmon/tps53679.rst index c7c589e4978918..3b9561648c24f5 100644 --- a/Documentation/hwmon/tps53679.rst +++ b/Documentation/hwmon/tps53679.rst @@ -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. diff --git a/drivers/hwmon/pmbus/Kconfig b/drivers/hwmon/pmbus/Kconfig index 4c0e9449c67009..fd0911017be611 100644 --- a/drivers/hwmon/pmbus/Kconfig +++ b/drivers/hwmon/pmbus/Kconfig @@ -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. diff --git a/drivers/hwmon/pmbus/tps53679.c b/drivers/hwmon/pmbus/tps53679.c index ba838fa311c3aa..21ba0b18c01401 100644 --- a/drivers/hwmon/pmbus/tps53679.c +++ b/drivers/hwmon/pmbus/tps53679.c @@ -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},