Commit 3aac11a7 authored by Hans de Goede's avatar Hans de Goede Committed by Jonathan Cameron
Browse files

iio: accel: bmc150: Add support for dual-accelerometers with a DUAL250E HID 



The Lenovo Yoga 300-11IBR has a ACPI fwnode with a HID of DUAL250E
which contains I2C and IRQ resources for 2 accelerometers, 1 in the
display and one in the base of the device. Add support for this.

Signed-off-by: default avatarHans de Goede <hdegoede@redhat.com>
Reviewed-by: default avatarAndy Shevchenko <andy.shevchenko@gmail.com>
Link: https://lore.kernel.org/r/20210523170103.176958-5-hdegoede@redhat.com


Signed-off-by: default avatarJonathan Cameron <Jonathan.Cameron@huawei.com>
parent 42d1c1dc

drivers/iio/accel/bmc150-accel-i2c.c

+12 −7
Original line number Diff line number Diff line
@@ -24,6 +24,7 @@ 
#ifdef CONFIG_ACPI

static const struct acpi_device_id bmc150_acpi_dual_accel_ids[] = {

	{"BOSC0200"},

	{"DUAL250E"},

	{ }

};
@@ -36,21 +37,24 @@ static void bmc150_acpi_dual_accel_probe(struct i2c_client *client) 
{

	struct acpi_device *adev = ACPI_COMPANION(&client->dev);

	struct i2c_client *second_dev;

	char dev_name[16];

	struct i2c_board_info board_info = {

		.type = "bmc150_accel",

		/*

		 * The 2nd accel sits in the base of 2-in-1s. Note this name is

		 * static, as there should never be more then 1 BOSC0200 ACPI

		 * node with 2 accelerometers in it.

		 */

		.dev_name = "BOSC0200:base",

		.dev_name = dev_name,

		.fwnode = client->dev.fwnode,

		.irq = -ENOENT,

	};



	if (acpi_match_device_ids(adev, bmc150_acpi_dual_accel_ids))

		return;



	/*

	 * The 2nd accel sits in the base of 2-in-1s. The suffix is static, as

	 * there should never be more then 1 ACPI node with 2 accelerometers.

	 */

	snprintf(dev_name, sizeof(dev_name), "%s:base", acpi_device_hid(adev));



	board_info.irq = acpi_dev_gpio_irq_get(adev, 1);



	second_dev = i2c_acpi_new_device(&client->dev, 1, &board_info);

	if (!IS_ERR(second_dev))

		bmc150_set_second_device(client, second_dev);
@@ -118,6 +122,7 @@ static const struct acpi_device_id bmc150_accel_acpi_match[] = { 
	{"BMA222E",	bma222e},

	{"BMA0280",	bma280},

	{"BOSC0200"},

	{"DUAL250E"},

	{ },

};

MODULE_DEVICE_TABLE(acpi, bmc150_accel_acpi_match);