[PATCH v3 08/11] platform/x86: int3472: Add get_sensor_adev_and_name() helper

Hans de Goede
2021-10-10T18:58:17Z

The discrete.c code is not the only code which needs to lookup the
acpi_device and device-name for the sensor for which the INT3472
ACPI-device is a GPIO/clk/regulator provider.

The tps68470.c code also needs this functionality, so factor this
out into a new get_sensor_adev_and_name() helper.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
---
drivers/platform/x86/intel/int3472/common.c | 28 +++++++++++++++++++
drivers/platform/x86/intel/int3472/common.h | 3 ++
drivers/platform/x86/intel/int3472/discrete.c | 22 +++------------
3 files changed, 35 insertions(+), 18 deletions(-)

diff --git a/drivers/platform/x86/intel/int3472/common.c b/drivers/platform/x86/intel/int3472/common.c
index 350655a9515b..77cf058e4168 100644
--- a/drivers/platform/x86/intel/int3472/common.c
+++ b/drivers/platform/x86/intel/int3472/common.c
@@ -52,3 +52,31 @@ int skl_int3472_fill_cldb(struct acpi_device *adev, struct int3472_cldb *cldb)
kfree(obj);
return ret;
}
+
+/* sensor_adev_ret may be NULL, name_ret must not be NULL */
+int skl_int3472_get_sensor_adev_and_name(struct device *dev,
+ struct acpi_device **sensor_adev_ret,
+ const char **name_ret)
+{
+ struct acpi_device *adev = ACPI_COMPANION(dev);
+ struct acpi_device *sensor;
+ int ret = 0;
+
+ sensor = acpi_dev_get_first_consumer_dev(adev);
+ if (!sensor) {
+ dev_err(dev, "INT3472 seems to have no dependents.\n");
+ return -ENODEV;
+ }
+
+ *name_ret = devm_kasprintf(dev, GFP_KERNEL, I2C_DEV_NAME_FORMAT,
+ acpi_dev_name(sensor));
+ if (!*name_ret)
+ ret = -ENOMEM;
+
+ if (ret == 0 && sensor_adev_ret)
+ *sensor_adev_ret = sensor;
+ else
+ acpi_dev_put(sensor);
+
+ return ret;
+}
diff --git a/drivers/platform/x86/intel/int3472/common.h b/drivers/platform/x86/intel/int3472/common.h
index d14944ee8586..53270d19c73a 100644
--- a/drivers/platform/x86/intel/int3472/common.h
+++ b/drivers/platform/x86/intel/int3472/common.h
@@ -108,6 +108,9 @@ struct int3472_discrete_device {
union acpi_object *skl_int3472_get_acpi_buffer(struct acpi_device *adev,
char *id);
int skl_int3472_fill_cldb(struct acpi_device *adev, struct int3472_cldb *cldb);
+int skl_int3472_get_sensor_adev_and_name(struct device *dev,
+ struct acpi_device **sensor_adev_ret,
+ const char **name_ret);

int skl_int3472_register_clock(struct int3472_discrete_device *int3472);
void skl_int3472_unregister_clock(struct int3472_discrete_device *int3472);
diff --git a/drivers/platform/x86/intel/int3472/discrete.c b/drivers/platform/x86/intel/int3472/discrete.c
index d62d81cde6ef..fefe12850777 100644
--- a/drivers/platform/x86/intel/int3472/discrete.c
+++ b/drivers/platform/x86/intel/int3472/discrete.c
@@ -363,19 +363,10 @@ static int skl_int3472_discrete_probe(struct platform_device *pdev)
int3472->dev = &pdev->dev;
platform_set_drvdata(pdev, int3472);

- int3472->sensor = acpi_dev_get_first_consumer_dev(adev);
- if (!int3472->sensor) {
- dev_err(&pdev->dev, "INT3472 seems to have no dependents.\n");
- return -ENODEV;
- }
-
- int3472->sensor_name = devm_kasprintf(int3472->dev, GFP_KERNEL,
- I2C_DEV_NAME_FORMAT,
- acpi_dev_name(int3472->sensor));
- if (!int3472->sensor_name) {
- ret = -ENOMEM;
- goto err_put_sensor;
- }
+ ret = skl_int3472_get_sensor_adev_and_name(&pdev->dev, &int3472->sensor,
+ &int3472->sensor_name);
+ if (ret)
+ return ret;

/*
* Initialising this list means we can call gpiod_remove_lookup_table()
@@ -390,11 +381,6 @@ static int skl_int3472_discrete_probe(struct platform_device *pdev)
}

return 0;
-
-err_put_sensor:
- acpi_dev_put(int3472->sensor);
-
- return ret;
}

static int skl_int3472_discrete_remove(struct platform_device *pdev)
--
2.31.1