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Bluetooth: hci_h5: Add support for reset GPIO 

Some boards (e.g. Pine64 and Pinebook) wire a GPIO to reset pin of
RTL8723BS

Signed-off-by: Vasily Khoruzhick <anarsoul@gmail.com>
alistair/sunxi64-5.5-dsi
Vasily Khoruzhick 2018-10-31 19:48:25 -07:00 committed by Alistair Francis
parent a7df17cfca
commit a2919d3d95
1 changed files with 9 additions and 0 deletions
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9
drivers/bluetooth/hci_h5.c
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@ -92,6 +92,7 @@ struct h5 {
const struct h5_vnd *vnd;
const char *id;
struct gpio_desc *reset_gpio;
struct gpio_desc *enable_gpio;
struct gpio_desc *device_wake_gpio;
};
@ -818,6 +819,10 @@ static int h5_serdev_probe(struct serdev_device *serdev)
if (IS_ERR(h5->device_wake_gpio))
return PTR_ERR(h5->device_wake_gpio);
h5->reset_gpio = devm_gpiod_get_optional(dev, "reset", GPIOD_OUT_HIGH);
if (IS_ERR(h5->reset_gpio))
return PTR_ERR(h5->reset_gpio);
return hci_uart_register_device(&h5->serdev_hu, &h5p);
}
@ -906,6 +911,9 @@ static void h5_btrtl_open(struct h5 *h5)
/* The controller needs up to 500ms to wakeup */
gpiod_set_value_cansleep(h5->enable_gpio, 1);
/* Take it out of reset */
gpiod_set_value_cansleep(h5->reset_gpio, 0);
msleep(100);
gpiod_set_value_cansleep(h5->device_wake_gpio, 1);
msleep(500);
}
@ -913,6 +921,7 @@ static void h5_btrtl_open(struct h5 *h5)
static void h5_btrtl_close(struct h5 *h5)
{
gpiod_set_value_cansleep(h5->device_wake_gpio, 0);
gpiod_set_value_cansleep(h5->reset_gpio, 1);
gpiod_set_value_cansleep(h5->enable_gpio, 0);
}