From e4a2c924a17ebbafcd8421c3920410ebc3b15095 Mon Sep 17 00:00:00 2001 From: Jonathan Cameron Date: Sun, 5 Dec 2021 17:27:28 +0000 Subject: [PATCH] iio: adc: ti-adc081c: Partial revert of removal of ACPI IDs commit c9791a94384af07592d29504004d2255dbaf8663 upstream. Unfortuanately a non standards compliant ACPI ID is known to be in the wild on some AAEON boards. Partly revert the removal of these IDs so that ADC081C will again work + add a comment to that affect for future reference. Whilst here use generic firmware properties rather than the ACPI specific handling previously found in this driver. Reported-by: Kunyang Fan Fixes: c458b7ca3fd0 ("iio:adc:ti-adc081c: Drop ACPI ids that seem very unlikely to be official.") Signed-off-by: Jonathan Cameron Cc: Andy Shevchenko Tested-by: Kunyang Fan #UP-extremei11 Link: https://lore.kernel.org/r/20211205172728.2826512-1-jic23@kernel.org Cc: Signed-off-by: Greg Kroah-Hartman --- drivers/iio/adc/ti-adc081c.c | 22 +++++++++++++++++----- 1 file changed, 17 insertions(+), 5 deletions(-) diff --git a/drivers/iio/adc/ti-adc081c.c b/drivers/iio/adc/ti-adc081c.c index b64718daa201..c79cd88cd423 100644 --- a/drivers/iio/adc/ti-adc081c.c +++ b/drivers/iio/adc/ti-adc081c.c @@ -19,6 +19,7 @@ #include #include #include +#include #include #include @@ -151,13 +152,16 @@ static int adc081c_probe(struct i2c_client *client, { struct iio_dev *iio; struct adc081c *adc; - struct adcxx1c_model *model; + const struct adcxx1c_model *model; int err; if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_WORD_DATA)) return -EOPNOTSUPP; - model = &adcxx1c_models[id->driver_data]; + if (dev_fwnode(&client->dev)) + model = device_get_match_data(&client->dev); + else + model = &adcxx1c_models[id->driver_data]; iio = devm_iio_device_alloc(&client->dev, sizeof(*adc)); if (!iio) @@ -224,10 +228,17 @@ static const struct i2c_device_id adc081c_id[] = { }; MODULE_DEVICE_TABLE(i2c, adc081c_id); +static const struct acpi_device_id adc081c_acpi_match[] = { + /* Used on some AAEON boards */ + { "ADC081C", (kernel_ulong_t)&adcxx1c_models[ADC081C] }, + { } +}; +MODULE_DEVICE_TABLE(acpi, adc081c_acpi_match); + static const struct of_device_id adc081c_of_match[] = { - { .compatible = "ti,adc081c" }, - { .compatible = "ti,adc101c" }, - { .compatible = "ti,adc121c" }, + { .compatible = "ti,adc081c", .data = &adcxx1c_models[ADC081C] }, + { .compatible = "ti,adc101c", .data = &adcxx1c_models[ADC101C] }, + { .compatible = "ti,adc121c", .data = &adcxx1c_models[ADC121C] }, { } }; MODULE_DEVICE_TABLE(of, adc081c_of_match); @@ -236,6 +247,7 @@ static struct i2c_driver adc081c_driver = { .driver = { .name = "adc081c", .of_match_table = adc081c_of_match, + .acpi_match_table = adc081c_acpi_match, }, .probe = adc081c_probe, .remove = adc081c_remove,