iio: chemical: bme680: add regulators

Add support for the regulators described in the dt-binding.

Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Vasileios Amoiridis <vassilisamir@gmail.com>
Link: https://patch.msgid.link/20241202192341.33187-3-vassilisamir@gmail.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>

diff --git a/drivers/iio/chemical/bme680_core.c b/drivers/iio/chemical/bme680_core.c
index d12270409c8ad2ed6d88475b8d3af7722b33c754..0fb13e36462f726a114ad60f6f6f7a39dbed3135 100644 (file)
--- a/drivers/iio/chemical/bme680_core.c
+++ b/drivers/iio/chemical/bme680_core.c
@@ -15,6 +15,7 @@
 #include <linux/log2.h>
 #include <linux/module.h>
 #include <linux/regmap.h>
+#include <linux/regulator/consumer.h>
 
 #include <linux/iio/buffer.h>
 #include <linux/iio/iio.h>
@@ -111,6 +112,8 @@ enum bme680_scan {
        BME680_GAS,
 };
 
+static const char *const bme680_supply_names[] = { "vdd", "vddio" };
+
 struct bme680_data {
        struct regmap *regmap;
        struct bme680_calib bme680;
@@ -1114,6 +1117,14 @@ int bme680_core_probe(struct device *dev, struct regmap *regmap,
        data->heater_dur = 150;  /* milliseconds */
        data->preheat_curr_mA = 0;
 
+       ret = devm_regulator_bulk_get_enable(dev, ARRAY_SIZE(bme680_supply_names),
+                                            bme680_supply_names);
+       if (ret)
+               return dev_err_probe(dev, ret,
+                                    "failed to get and enable supplies.\n");
+
+       fsleep(BME680_STARTUP_TIME_US);
+
        ret = regmap_write(regmap, BME680_REG_SOFT_RESET, BME680_CMD_SOFTRESET);
        if (ret < 0)
                return dev_err_probe(dev, ret, "Failed to reset chip\n");