From: Alan Tull <atull@xxxxxxxxxxxxxxxxxxxxx> Add simple on/off regulator support for ltc2978 and other pmbus parts supported by ltc2978.c Signed-off-by: Alan Tull <atull@xxxxxxxxxxxxxxxxxxxxx> v2: Remove '#include <linux/regulator/machine.h>' Only one regulator per pmbus device Get regulator_init_data from pdata or device tree v3: Support multiple regulators for each chip Move most code to pmbus_core.c fixed values for on/off --- drivers/hwmon/pmbus/Kconfig | 7 ++++++ drivers/hwmon/pmbus/ltc2978.c | 51 +++++++++++++++++++++++++++++++++++++++++ 2 files changed, 58 insertions(+) diff --git a/drivers/hwmon/pmbus/Kconfig b/drivers/hwmon/pmbus/Kconfig index 6e1e493..79117b7 100644 --- a/drivers/hwmon/pmbus/Kconfig +++ b/drivers/hwmon/pmbus/Kconfig @@ -56,6 +56,13 @@ config SENSORS_LTC2978 This driver can also be built as a module. If so, the module will be called ltc2978. +config SENSORS_LTC2978_REGULATOR + boolean "Regulator support for LTC2974, LTC2978, LTC3880, and LTC3883" + depends on SENSORS_LTC2978 && REGULATOR + help + If you say yes here you get regulator support for Linear + Technology LTC2974, LTC2978, LTC3880, and LTC3883. + config SENSORS_MAX16064 tristate "Maxim MAX16064" default n diff --git a/drivers/hwmon/pmbus/ltc2978.c b/drivers/hwmon/pmbus/ltc2978.c index e24ed52..7d4dcd7 100644 --- a/drivers/hwmon/pmbus/ltc2978.c +++ b/drivers/hwmon/pmbus/ltc2978.c @@ -22,6 +22,8 @@ #include <linux/err.h> #include <linux/slab.h> #include <linux/i2c.h> +#include <linux/regulator/driver.h> +#include <linux/regulator/of_regulator.h> #include "pmbus.h" enum chips { ltc2974, ltc2977, ltc2978, ltc3880, ltc3883, ltm4676 }; @@ -374,6 +376,30 @@ static const struct i2c_device_id ltc2978_id[] = { }; MODULE_DEVICE_TABLE(i2c, ltc2978_id); +#if IS_ENABLED(CONFIG_SENSORS_LTC2978_REGULATOR) +static const struct regulator_desc ltc2978_reg_desc[] = { + PMBUS_REGULATOR("vout_en", 0), + PMBUS_REGULATOR("vout_en", 1), + PMBUS_REGULATOR("vout_en", 2), + PMBUS_REGULATOR("vout_en", 3), + PMBUS_REGULATOR("vout_en", 4), + PMBUS_REGULATOR("vout_en", 5), + PMBUS_REGULATOR("vout_en", 6), + PMBUS_REGULATOR("vout_en", 7), +}; + +static struct of_regulator_match ltc2978_reg_matches[] = { + { .name = "vout_en0" }, + { .name = "vout_en1" }, + { .name = "vout_en2" }, + { .name = "vout_en3" }, + { .name = "vout_en4" }, + { .name = "vout_en5" }, + { .name = "vout_en6" }, + { .name = "vout_en7" }, +}; +#endif /* CONFIG_REGULATOR */ + static int ltc2978_probe(struct i2c_client *client, const struct i2c_device_id *id) { @@ -487,6 +513,31 @@ static int ltc2978_probe(struct i2c_client *client, default: return -ENODEV; } + +#if IS_ENABLED(CONFIG_SENSORS_LTC2978_REGULATOR) + info->reg_desc = ltc2978_reg_desc; + info->reg_matches = ltc2978_reg_matches; + + switch (data->id) { + case ltc2974: + info->num_regulators = LTC2974_NUM_PAGES; + break; + case ltc2977: + case ltc2978: + info->num_regulators = LTC2978_NUM_PAGES; + break; + case ltc3880: + case ltm4676: + info->num_regulators = LTC3880_NUM_PAGES; + break; + case ltc3883: + info->num_regulators = LTC3883_NUM_PAGES; + break; + default: + return -ENODEV; + } + BUG_ON(info->num_regulators > ARRAY_SIZE(ltc2978_reg_desc)); +#endif return pmbus_do_probe(client, id, info); } -- 1.7.9.5 _______________________________________________ lm-sensors mailing list lm-sensors@xxxxxxxxxxxxxx http://lists.lm-sensors.org/mailman/listinfo/lm-sensors