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Commit 6e5c6010 authored by puneet's avatar puneet Committed by Gerrit - the friendly Code Review server
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drivers: iio: imu: enabled regulator for bmi160 sensor 



BMI160 will not power on if regulator does not enabled from
probe

Change-Id: I134687a7923416dd87c8753e980337f68f6862c4
Signed-off-by: default avatarpuneet <puneet@codeaurora.org>
parent f1587d86

drivers/input/sensors/bmi160/bmi160_driver.c

+2 −1
Original line number Diff line number Diff line
@@ -569,7 +569,7 @@ static int bmi_check_chip_id(struct bmi_client_data *client_data) 
					dev_notice(client_data->dev,

					"Bosch Sensortec Device detected, "

			"HW IC name: %s\n", sensor_type_map[i].sensor_name);

					break;

					return 0;

				}

			}

			if (i < bmi_sensor_cnt)
@@ -586,6 +586,7 @@ static int bmi_check_chip_id(struct bmi_client_data *client_data) 
			bmi_delay(1);

		}

	}

	err = -ENODEV;

	return err;



}

drivers/input/sensors/bmi160/bmi160_i2c.c

+42 −0
Original line number Diff line number Diff line
@@ -20,12 +20,19 @@ 
#include <linux/i2c.h>

#include <linux/delay.h>

#include "bmi160_driver.h"

#include <linux/regulator/consumer.h>



/*! @defgroup bmi160_i2c_src

 *  @brief bmi160 i2c driver module

 @{*/



static struct i2c_client *bmi_client;



struct BMI160Supply {

	struct regulator *vdd_reg;

	struct regulator *vio_reg;

};



/*!

 * @brief define i2c wirte function

 *
@@ -256,9 +263,44 @@ static int bmi_i2c_probe(struct i2c_client *client, 
{

		int err = 0;

		struct bmi_client_data *client_data = NULL;

		struct BMI160Supply bmi160Supply;



		dev_info(&client->dev, "BMI160 i2c function probe entrance");



		dev_info(&client->dev, "bmi_i2c_probe regulator ON\n");



		bmi160Supply.vdd_reg = devm_regulator_get(&client->dev, "vdd");

		if (IS_ERR(bmi160Supply.vdd_reg)) {

			if (PTR_ERR(bmi160Supply.vdd_reg) != -EPROBE_DEFER)

				dev_err(&client->dev, "bmi160Supply->vdd_reg EPROBE_DEFER Unable to get regulator\n");

			err = PTR_ERR(bmi160Supply.vdd_reg);

			goto exit_err_clean;

		}



		dev_err(&client->dev, "bmi_i2c_probe before regulator_enable(VDD)\n");

		if (regulator_enable(bmi160Supply.vdd_reg)) {

			dev_err(&client->dev, "bmi160Supply->vdd_reg error!regulator cannot enable");

			err = -EIO;

			goto exit_err_clean;

		}

		dev_err(&client->dev, "bmi_i2c_probe after regulator_enable(VDD)\n");



		bmi160Supply.vio_reg = devm_regulator_get(&client->dev, "vio");

		if (IS_ERR(bmi160Supply.vio_reg)) {

			if (PTR_ERR(bmi160Supply.vio_reg) != -EPROBE_DEFER)

				dev_err(&client->dev, "bmi160Supply->vio_reg EPROBE_DEFER Unable to get regulator\n");

			err = PTR_ERR(bmi160Supply.vio_reg);

			goto exit_err_clean;

		}



		dev_err(&client->dev, "bmi_i2c_probe before regulator_enable(VIO)\n");

		if (regulator_enable(bmi160Supply.vio_reg)) {

			dev_err(&client->dev, "bmi160Supply->vio_reg error!regulator cannot enable");

			err = -EIO;

			goto exit_err_clean;

		}

		dev_err(&client->dev, "bmi_i2c_probe after regulator_enable(VIO)\n");



		if (!i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) {

			dev_err(&client->dev, "i2c_check_functionality error!");

			err = -EIO;