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drivers: input: gt911: always set INT pin during probe

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Even in cases where the alt-addr is set, we can still use the INT pin
during probe. Some boards require this, as if a reset GPIO is not
defined the INT pin may still need to be toggled in order to initialize
the GT911 IC correctly.

Signed-off-by: Daniel DeGrasse <daniel.degrasse@nxp.com>
This commit is contained in:
Daniel DeGrasse 2024-10-22 13:06:40 -05:00 committed by Anas Nashif
parent 6b928de90c
commit 52d98498bc
1 changed files with 13 additions and 13 deletions
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26
drivers/input/input_gt911.c
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@ -272,19 +272,19 @@ static int gt911_init(const struct device *dev)
}
}
if (config->alt_addr == 0x0) {
/*
* We need to configure the int-pin to 0, in order to enter the
* AddressMode0. Keeping the INT pin low during the reset sequence
* should result in the device selecting an I2C address of 0x5D.
* Note we skip this step if an alternate I2C address is set,
* and fall through to probing for the actual address.
*/
r = gpio_pin_configure_dt(&config->int_gpio, GPIO_OUTPUT_INACTIVE);
if (r < 0) {
LOG_ERR("Could not configure int GPIO pin");
return r;
}
/*
* We need to configure the int-pin to 0, in order to enter the
* AddressMode0. Keeping the INT pin low during the reset sequence
* should result in the device selecting an I2C address of 0x5D.
* Note that if an alternate I2C address is set, we will probe
* for the alternate address if 0x5D does not work. This is useful
* for boards that do not route the INT pin, or only permit it
* to be used as an input
*/
r = gpio_pin_configure_dt(&config->int_gpio, GPIO_OUTPUT_INACTIVE);
if (r < 0) {
LOG_ERR("Could not configure int GPIO pin");
return r;
}
/* Delay at least 10 ms after power on before we configure gt911 */
k_sleep(K_MSEC(20));