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HID: i2c-hid: goodix: Add mainboard-vddio-supply

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As talked about in the patch ("dt-bindings: HID: i2c-hid: goodix: Add
mainboard-vddio-supply") we may need to power up a 1.8V rail on the
host associated with touchscreen IO. Let's add support in the driver
for it.

Signed-off-by: Douglas Anderson <dianders@chromium.org>
Reviewed-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Reviewed-by: Matthias Kaehlcke <mka@chromium.org>
Link: https://lore.kernel.org/r/20230206184744.6.Ic234b931025d1f920ce9e06fff294643943a65ad@changeid
Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
This commit is contained in:
Douglas Anderson 2023-02-06 18:48:15 -08:00 committed by Benjamin Tissoires
parent 1d18c1f3b7
commit eb16f59e8e
1 changed files with 10 additions and 0 deletions
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10
drivers/hid/i2c-hid/i2c-hid-of-goodix.c
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@ -26,6 +26,7 @@ struct i2c_hid_of_goodix {
struct i2chid_ops ops;
struct regulator *vdd;
struct regulator *vddio;
struct gpio_desc *reset_gpio;
const struct goodix_i2c_hid_timing_data *timings;
};
@ -40,6 +41,10 @@ static int goodix_i2c_hid_power_up(struct i2chid_ops *ops)
if (ret)
return ret;
ret = regulator_enable(ihid_goodix->vddio);
if (ret)
return ret;
if (ihid_goodix->timings->post_power_delay_ms)
msleep(ihid_goodix->timings->post_power_delay_ms);
@ -56,6 +61,7 @@ static void goodix_i2c_hid_power_down(struct i2chid_ops *ops)
container_of(ops, struct i2c_hid_of_goodix, ops);
gpiod_set_value_cansleep(ihid_goodix->reset_gpio, 1);
regulator_disable(ihid_goodix->vddio);
regulator_disable(ihid_goodix->vdd);
}
@ -81,6 +87,10 @@ static int i2c_hid_of_goodix_probe(struct i2c_client *client)
if (IS_ERR(ihid_goodix->vdd))
return PTR_ERR(ihid_goodix->vdd);
ihid_goodix->vddio = devm_regulator_get(&client->dev, "mainboard-vddio");
if (IS_ERR(ihid_goodix->vddio))
return PTR_ERR(ihid_goodix->vddio);
ihid_goodix->timings = device_get_match_data(&client->dev);
return i2c_hid_core_probe(client, &ihid_goodix->ops, 0x0001, 0);