static int silead_ts_probe(struct i2c_client *client,
const struct i2c_device_id *id)
{
struct silead_ts_data *data;
struct device *dev = &client->dev;
int error;
if (!i2c_check_functionality(client->adapter,
I2C_FUNC_I2C |
I2C_FUNC_SMBUS_READ_I2C_BLOCK |
I2C_FUNC_SMBUS_WRITE_I2C_BLOCK)) {
dev_err(dev, "I2C functionality check failed\n");
return -ENXIO;
}
data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL);
if (!data)
return -ENOMEM;
i2c_set_clientdata(client, data);
data->client = client;
error = silead_ts_set_default_fw_name(data, id);
if (error)
return error;
silead_ts_read_props(client);
/* We must have the IRQ provided by DT or ACPI subsytem */
if (client->irq <= 0)
return -ENODEV;
/* Power GPIO pin */
data->gpio_power = devm_gpiod_get_optional(dev, "power", GPIOD_OUT_LOW);
if (IS_ERR(data->gpio_power)) {
if (PTR_ERR(data->gpio_power) != -EPROBE_DEFER)
dev_err(dev, "Shutdown GPIO request failed\n");
return PTR_ERR(data->gpio_power);
}
error = silead_ts_setup(client);
if (error)
return error;
error = silead_ts_request_input_dev(data);
if (error)
return error;
error = devm_request_threaded_irq(dev, client->irq,
NULL, silead_ts_threaded_irq_handler,
IRQF_ONESHOT, client->name, data);
if (error) {
if (error != -EPROBE_DEFER)
dev_err(dev, "IRQ request failed %d\n", error);
return error;
}
return 0;
}
static int silead_ts_probe(struct i2c_client *client,
const struct i2c_device_id *id)
{
struct silead_ts_data *data;
struct device *dev = &client->dev;
int error;
if (!i2c_check_functionality(client->adapter,
I2C_FUNC_I2C |
I2C_FUNC_SMBUS_READ_I2C_BLOCK |
I2C_FUNC_SMBUS_WRITE_I2C_BLOCK)) {
dev_err(dev, "I2C functionality check failed\n");
return -ENXIO;
}
data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL);
if (!data)
return -ENOMEM;
i2c_set_clientdata(client, data);
data->client = client;
error = silead_ts_set_default_fw_name(data, id);
if (error)
return error;
silead_ts_read_props(client);
/* We must have the IRQ provided by DT or ACPI subsytem */
if (client->irq <= 0)
return -ENODEV;
data->regulators[0].supply = "vddio";
data->regulators[1].supply = "avdd";
error = devm_regulator_bulk_get(dev, ARRAY_SIZE(data->regulators),
data->regulators);
if (error)
return error;
/*
* Enable regulators at probe and disable them at remove, we need
* to keep the chip powered otherwise it forgets its firmware.
*/
error = regulator_bulk_enable(ARRAY_SIZE(data->regulators),
data->regulators);
if (error)
return error;
error = devm_add_action_or_reset(dev, silead_disable_regulator, data);
if (error)
return error;
/* Power GPIO pin */
data->gpio_power = devm_gpiod_get_optional(dev, "power", GPIOD_OUT_LOW);
if (IS_ERR(data->gpio_power)) {
if (PTR_ERR(data->gpio_power) != -EPROBE_DEFER)
dev_err(dev, "Shutdown GPIO request failed\n");
return PTR_ERR(data->gpio_power);
}
error = silead_ts_setup(client);
if (error)
return error;
error = silead_ts_request_input_dev(data);
if (error)
return error;
error = devm_request_threaded_irq(dev, client->irq,
NULL, silead_ts_threaded_irq_handler,
IRQF_ONESHOT, client->name, data);
if (error) {
if (error != -EPROBE_DEFER)
dev_err(dev, "IRQ request failed %d\n", error);
return error;
}
return 0;
}
static int silead_ts_probe(struct i2c_client *client,
const struct i2c_device_id *id)
{
struct silead_ts_data *data;
struct device *dev = &client->dev;
int ret;
if (!i2c_check_functionality(client->adapter,
I2C_FUNC_I2C |
I2C_FUNC_SMBUS_READ_I2C_BLOCK |
I2C_FUNC_SMBUS_WRITE_I2C_BLOCK)) {
dev_err(dev, "I2C functionality check failed\n");
return -ENXIO;
}
data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL);
i2c_set_clientdata(client, data);
data->client = client;
data->fw_name = SILEAD_FW_NAME;
data->x_max = SILEAD_X_MAX;
data->y_max = SILEAD_Y_MAX;
data->max_fingers = SILEAD_MAX_FINGERS;
data->pressure = SILEAD_PRESSURE;
/* If the IRQ is not filled by DT or ACPI subsytem
* try using the named GPIO */
if (client->irq <= 0) {
data->gpio_irq = devm_gpiod_get(dev, SILEAD_IRQ_GPIO_NAME);
if (IS_ERR(data->gpio_irq)) {
dev_err(dev, "IRQ GPIO request failed\n");
return -ENODEV;
}
ret = gpiod_direction_input(data->gpio_irq);
if (ret) {
dev_err(dev, "IRQ GPIO direction set failed\n");
return ret;
}
client->irq = gpiod_to_irq(data->gpio_irq);
if (client->irq <= 0) {
dev_err(dev, "GPIO to IRQ translation failed %d\n",
client->irq);
return client->irq;
}
}
/* Power GPIO pin */
if (client->dev.of_node) {
ret = of_get_named_gpio_flags(client->dev.of_node,
SILEAD_PWR_GPIO_NAME, 0, NULL);
if (ret <= 0) {
dev_err(&client->dev, "error getting gpio for %s\n",
SILEAD_PWR_GPIO_NAME);
return -ENODEV;
}
data->gpio_power = gpio_to_desc(ret);
if (!data->gpio_power)
return -ENODEV;
}
ret = gpiod_direction_output(data->gpio_power, 0);
if (ret) {
dev_err(dev, "Shutdown GPIO direction set failed\n");
return ret;
}
ret = silead_ts_setup(client);
if (ret)
return ret;
ret = silead_ts_request_input_dev(data);
if (ret)
return ret;
ret = devm_request_threaded_irq(dev, client->irq, NULL,
silead_ts_irq_handler,
IRQF_ONESHOT | IRQ_TYPE_EDGE_RISING,
client->name, data);
if (ret) {
dev_err(dev, "IRQ request failed %d\n", ret);
return ret;
}
dev_dbg(dev, "Probing succeded\n");
return 0;
}
