Move the check for a second ACPI device for BOSC0200 ACPI fwnodes into
a new bmc150_acpi_dual_accel_probe() helper function.
This is a preparation patch for adding support for a new "DUAL250E" ACPI
Hardware-ID (HID) used on some devices.
Signed-off-by: Hans de Goede <hdegoede@xxxxxxxxxx>
---
Changes in v2:
- Drop comma after terminating entry of bmc150_acpi_dual_accel_ids array
- Rewrap some comments at 80 chars limit
---
drivers/iio/accel/bmc150-accel-i2c.c | 80 ++++++++++++++++++----------
1 file changed, 51 insertions(+), 29 deletions(-)
diff --git a/drivers/iio/accel/bmc150-accel-i2c.c b/drivers/iio/accel/bmc150-accel-i2c.c
index 2afaae0294ee..f7cb40f481ef 100644
--- a/drivers/iio/accel/bmc150-accel-i2c.c
+++ b/drivers/iio/accel/bmc150-accel-i2c.c
@@ -21,6 +21,52 @@
#include "bmc150-accel.h"
+#ifdef CONFIG_ACPI
+static const struct acpi_device_id bmc150_acpi_dual_accel_ids[] = {
+ {"BOSC0200"},
+ { }
+};
+
+/*
+ * Some acpi_devices describe 2 accelerometers in a single ACPI device,
+ * try instantiating a second i2c_client for an I2cSerialBusV2 ACPI resource
+ * with index 1.
+ */
+static void bmc150_acpi_dual_accel_probe(struct i2c_client *client)
+{
+ struct acpi_device *adev = ACPI_COMPANION(&client->dev);
+ struct i2c_client *second_dev;
+ 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",
+ .fwnode = client->dev.fwnode,
+ .irq = -ENOENT,
+ };
+
+ if (acpi_match_device_ids(adev, bmc150_acpi_dual_accel_ids))
+ return;
+
+ second_dev = i2c_acpi_new_device(&client->dev, 1, &board_info);
+ if (!IS_ERR(second_dev))
+ bmc150_set_second_device(client, second_dev);
+}
+
+static void bmc150_acpi_dual_accel_remove(struct i2c_client *client)
+{
+ struct i2c_client *second_dev = bmc150_get_second_device(client);
+
+ i2c_unregister_device(second_dev);
+}
+#else
+static void bmc150_acpi_dual_accel_probe(struct i2c_client *client) {}
+static void bmc150_acpi_dual_accel_remove(struct i2c_client *client) {}
+#endif
+
static int bmc150_accel_probe(struct i2c_client *client,
const struct i2c_device_id *id)
{
@@ -30,7 +76,6 @@ static int bmc150_accel_probe(struct i2c_client *client,
i2c_check_functionality(client->adapter, I2C_FUNC_I2C) ||
i2c_check_functionality(client->adapter,
I2C_FUNC_SMBUS_READ_I2C_BLOCK);
- struct acpi_device __maybe_unused *adev;
int ret;
regmap = devm_regmap_init_i2c(client, &bmc150_regmap_conf);
@@ -47,41 +92,18 @@ static int bmc150_accel_probe(struct i2c_client *client,
return ret;
/*
- * Some BOSC0200 acpi_devices describe 2 accelerometers in a single ACPI
- * device, try instantiating a second i2c_client for an I2cSerialBusV2
- * ACPI resource with index 1. The !id check avoids recursion when
- * bmc150_accel_probe() gets called for the second client.
+ * The !id check avoids recursion when probe() gets called
+ * for the second client.
*/
-#ifdef CONFIG_ACPI
- adev = ACPI_COMPANION(&client->dev);
- if (!id && adev && strcmp(acpi_device_hid(adev), "BOSC0200") == 0) {
- 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",
- .fwnode = client->dev.fwnode,
- .irq = -ENOENT,
- };
- struct i2c_client *second_dev;
-
- second_dev = i2c_acpi_new_device(&client->dev, 1, &board_info);
- if (!IS_ERR(second_dev))
- bmc150_set_second_device(client, second_dev);
- }
-#endif
+ if (!id && has_acpi_companion(&client->dev))
+ bmc150_acpi_dual_accel_probe(client);
return 0;
}
static int bmc150_accel_remove(struct i2c_client *client)
{
- struct i2c_client *second_dev = bmc150_get_second_device(client);
-
- i2c_unregister_device(second_dev);
+ bmc150_acpi_dual_accel_remove(client);
return bmc150_accel_core_remove(&client->dev);
}
--
2.31.1
