linux-kernel - Re: [PATCH v2 4/6] iio: st_sensors: Add ACPI support for lsm303d to the LSM9DS0 IMU driver

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Date:   Sun, 16 Apr 2023 01:17:36 +0200
From:   Marius Hoch <mail@...iushoch.de>
To:     Jonathan Cameron <jic23@...nel.org>
Cc:     Lars-Peter Clausen <lars@...afoo.de>, linux-iio@...r.kernel.org,
        linux-kernel@...r.kernel.org, Hans de Goede <hdegoede@...hat.com>
Subject: Re: [PATCH v2 4/6] iio: st_sensors: Add ACPI support for lsm303d to
 the LSM9DS0 IMU driver

On 15/04/2023 18:55, Jonathan Cameron wrote:
> On Thu, 13 Apr 2023 04:40:11 +0200
> Marius Hoch <mail@...iushoch.de> wrote:
>
>> The lsm303d can be found as ACCL0001 on various Lenovo devices,
>> including the Lenovo Yoga Tablet 2 1051-F, where I tested this
>> patch.
>>
>> Signed-off-by: Marius Hoch <mail@...iushoch.de>
>> ---
>>   drivers/iio/imu/st_lsm9ds0/st_lsm9ds0_i2c.c | 10 ++++++++++
>>   drivers/iio/imu/st_lsm9ds0/st_lsm9ds0_spi.c | 10 ++++++++++
>>   2 files changed, 20 insertions(+)
>>
>> diff --git a/drivers/iio/imu/st_lsm9ds0/st_lsm9ds0_i2c.c b/drivers/iio/imu/st_lsm9ds0/st_lsm9ds0_i2c.c
>> index 64fa77d302e2..79be8d28d965 100644
>> --- a/drivers/iio/imu/st_lsm9ds0/st_lsm9ds0_i2c.c
>> +++ b/drivers/iio/imu/st_lsm9ds0/st_lsm9ds0_i2c.c
>> @@ -12,6 +12,7 @@
>>   #include <linux/module.h>
>>   #include <linux/mod_devicetable.h>
>>   #include <linux/regmap.h>
>> +#include <linux/acpi.h>
>>   
>>   #include <linux/iio/common/st_sensors_i2c.h>
>>   
>> @@ -37,6 +38,14 @@ static const struct i2c_device_id st_lsm9ds0_id_table[] = {
>>   };
>>   MODULE_DEVICE_TABLE(i2c, st_lsm9ds0_id_table);
>>   
>> +#ifdef CONFIG_ACPI
>> +static const struct acpi_device_id st_lsm9ds0_acpi_match[] = {
>> +	{"ACCL0001", (kernel_ulong_t)LSM303D_IMU_DEV_NAME},
>> +	{ },
>> +};
>> +MODULE_DEVICE_TABLE(acpi, st_lsm9ds0_acpi_match);
>> +#endif
> The table is tiny so I'd prefer dropping the complexity of ifdefs
> and getting rid of the ACPI_PTR() below. Just assign the pointer
> unconditionally.
>
> Rest of the series looks good to me
>
> Thanks,
>
> Jonathan
Thanks for your review, applied in v3.
>> +
>>   static const struct regmap_config st_lsm9ds0_regmap_config = {
>>   	.reg_bits	= 8,
>>   	.val_bits	= 8,
>> @@ -73,6 +82,7 @@ static struct i2c_driver st_lsm9ds0_driver = {
>>   	.driver = {
>>   		.name = "st-lsm9ds0-i2c",
>>   		.of_match_table = st_lsm9ds0_of_match,
>> +		.acpi_match_table = ACPI_PTR(st_lsm9ds0_acpi_match),
>>   	},
>>   	.probe_new = st_lsm9ds0_i2c_probe,
>>   	.id_table = st_lsm9ds0_id_table,
>> diff --git a/drivers/iio/imu/st_lsm9ds0/st_lsm9ds0_spi.c b/drivers/iio/imu/st_lsm9ds0/st_lsm9ds0_spi.c
>> index 997b5ff792be..27c5d99ce0e3 100644
>> --- a/drivers/iio/imu/st_lsm9ds0/st_lsm9ds0_spi.c
>> +++ b/drivers/iio/imu/st_lsm9ds0/st_lsm9ds0_spi.c
>> @@ -12,6 +12,7 @@
>>   #include <linux/mod_devicetable.h>
>>   #include <linux/regmap.h>
>>   #include <linux/spi/spi.h>
>> +#include <linux/acpi.h>
>>   
>>   #include <linux/iio/common/st_sensors_spi.h>
>>   
>> @@ -37,6 +38,14 @@ static const struct spi_device_id st_lsm9ds0_id_table[] = {
>>   };
>>   MODULE_DEVICE_TABLE(spi, st_lsm9ds0_id_table);
>>   
>> +#ifdef CONFIG_ACPI
>> +static const struct acpi_device_id st_lsm9ds0_acpi_match[] = {
>> +	{"ACCL0001", (kernel_ulong_t)LSM303D_IMU_DEV_NAME},
>> +	{ },
>> +};
>> +MODULE_DEVICE_TABLE(acpi, st_lsm9ds0_acpi_match);
>> +#endif
>> +
>>   static const struct regmap_config st_lsm9ds0_regmap_config = {
>>   	.reg_bits	= 8,
>>   	.val_bits	= 8,
>> @@ -72,6 +81,7 @@ static struct spi_driver st_lsm9ds0_driver = {
>>   	.driver = {
>>   		.name = "st-lsm9ds0-spi",
>>   		.of_match_table = st_lsm9ds0_of_match,
>> +		.acpi_match_table = ACPI_PTR(st_lsm9ds0_acpi_match),
>>   	},
>>   	.probe = st_lsm9ds0_spi_probe,
>>   	.id_table = st_lsm9ds0_id_table,