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sensor: vl53l0x: make xshut pin control optional

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The XSHUT pin, used to shutdown the device when it is not
in current use, is optional and some boards (like ArgonKey)
leave it tied to vdd. So, the driver must provide a way to
make this part configurable.

Signed-off-by: Armando Visconti <armando.visconti@st.com>
This commit is contained in:
Armando Visconti 2018-05-07 11:34:18 +02:00 • committed by Anas Nashif
commit b83d0782c9
2 changed files with 13 additions and 3 deletions
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11
drivers/sensor/vl53l0x/Kconfig
View file

@ -44,11 +44,18 @@ config VL53L0X_I2C_MASTER_DEV_NAME
endif
config VL53L0X_XSHUT_CONTROL_ENABLE
bool "Enable XSHUT pin control"
depends on VL53L0X
default n
help
Enable it if XSHUT pin is controlled by host.
config VL53L0X_XSHUT_GPIO_DEV_NAME
string
prompt "GPIO device"
default "GPIO_6"
depends on VL53L0X
depends on VL53L0X_XSHUT_CONTROL_ENABLE
help
The device name of the GPIO device to which the VL53L0X xshut pin
is connected.
@ -57,7 +64,7 @@ config VL53L0X_XSHUT_GPIO_PIN_NUM
int
prompt "Interrupt GPIO pin number"
default 6
depends on VL53L0X
depends on VL53L0X_XSHUT_CONTROL_ENABLE
help
The number of the GPIO on which the xshut signal from the VL53L0X
is connected.

5
drivers/sensor/vl53l0x/vl53l0x.c
View file

@ -199,10 +199,12 @@ static int vl53l0x_init(struct device *dev)
VL53L0X_Error ret;
u16_t vl53l0x_id = 0;
VL53L0X_DeviceInfo_t vl53l0x_dev_info;
struct device *gpio;
SYS_LOG_DBG("enter in %s", __func__);
#ifdef CONFIG_VL53L0X_XSHUT_CONTROL_ENABLE
struct device *gpio;
/* configure and set VL53L0X_XSHUT_Pin */
gpio = device_get_binding(CONFIG_VL53L0X_XSHUT_GPIO_DEV_NAME);
if (gpio == NULL) {
@ -222,6 +224,7 @@ static int vl53l0x_init(struct device *dev)
gpio_pin_write(gpio, CONFIG_VL53L0X_XSHUT_GPIO_PIN_NUM, 1);
k_sleep(100);
#endif
drv_data->i2c = device_get_binding(CONFIG_VL53L0X_I2C_MASTER_DEV_NAME);
if (drv_data->i2c == NULL) {