linux-kernel - Re: [PATCH v2 1/2] iio: chemical: bme680: Add device-tree support

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Date:   Mon, 14 Jan 2019 15:01:41 -0500
From:   sebastien bourdelin <sebastien.bourdelin@...il.com>
To:     Jonathan Cameron <jic23@...nel.org>
Cc:     linux-kernel@...r.kernel.org, devicetree@...r.kernel.org,
        linux-iio@...r.kernel.org, himanshujha199640@...il.com,
        mark.rutland@....com, robh+dt@...nel.org, pmeerw@...erw.net,
        lars@...afoo.de, knaack.h@....de
Subject: Re: [PATCH v2 1/2] iio: chemical: bme680: Add device-tree support

Hi,

On 1/12/19 1:22 PM, Jonathan Cameron wrote:
> On Fri, 11 Jan 2019 15:53:58 -0500
> Sebastien Bourdelin <sebastien.bourdelin@...il.com> wrote:
>
>> This commit allow the driver to work with device-tree.
>>
>> Signed-off-by: Sebastien Bourdelin <sebastien.bourdelin@...il.com>
> Minor stuff inline.
>
> J
>> ---
>> v1 -> v2:
>>    - add missing of.h header in bme680_spi.c
>> ---
>>   drivers/iio/chemical/bme680_i2c.c | 7 +++++++
>>   drivers/iio/chemical/bme680_spi.c | 9 +++++++++
>>   2 files changed, 16 insertions(+)
>>
>> diff --git a/drivers/iio/chemical/bme680_i2c.c b/drivers/iio/chemical/bme680_i2c.c
>> index 06d4be539d2e..94a36ebdf0b2 100644
>> --- a/drivers/iio/chemical/bme680_i2c.c
>> +++ b/drivers/iio/chemical/bme680_i2c.c
>> @@ -70,10 +70,17 @@ static const struct acpi_device_id bme680_acpi_match[] = {
>>   };
>>   MODULE_DEVICE_TABLE(acpi, bme680_acpi_match);
>>   
>> +static const struct of_device_id bme680_of_i2c_match[] = {
>> +	{ .compatible = "bosch,bme680", },
>> +	{},
>> +}
>> +MODULE_DEVICE_TABLE(of, bme680_of_i2c_match);
>> +
>>   static struct i2c_driver bme680_i2c_driver = {
>>   	.driver = {
>>   		.name			= "bme680_i2c",
>>   		.acpi_match_table       = ACPI_PTR(bme680_acpi_match),
>> +		.of_match_table		= of_match_ptr(bme680_of_i2c_match),
> As below. just = bme680...
Got it, thanks!
>
>>   	},
>>   	.probe = bme680_i2c_probe,
>>   	.id_table = bme680_i2c_id,
>> diff --git a/drivers/iio/chemical/bme680_spi.c b/drivers/iio/chemical/bme680_spi.c
>> index c9fb05e8d0b9..caa57287a911 100644
>> --- a/drivers/iio/chemical/bme680_spi.c
>> +++ b/drivers/iio/chemical/bme680_spi.c
>> @@ -6,9 +6,11 @@
>>    */
>>   #include <linux/acpi.h>
>>   #include <linux/module.h>
>> +#include <linux/of.h>
>>   #include <linux/regmap.h>
>>   #include <linux/spi/spi.h>
>>   
>> +
> This white space change should not be here.
My bad.
>>   #include "bme680.h"
>>   
>>   static int bme680_regmap_spi_write(void *context, const void *data,
>> @@ -110,10 +112,17 @@ static const struct acpi_device_id bme680_acpi_match[] = {
>>   };
>>   MODULE_DEVICE_TABLE(acpi, bme680_acpi_match);
>>   
>> +static const struct of_device_id bme680_of_spi_match[] = {
>> +	{ .compatible = "bosch,bme680", },
>> +	{},
>> +}
>> +MODULE_DEVICE_TABLE(of, bme680_of_spi_match);
>> +
>>   static struct spi_driver bme680_spi_driver = {
>>   	.driver = {
>>   		.name			= "bme680_spi",
>>   		.acpi_match_table	= ACPI_PTR(bme680_acpi_match),
>> +		.of_match_table		= of_match_ptr(bme680_of_spi_match),
> Please don't use of_match_ptr.  We actually want this entry to be there even
> if devicetree is not in use.  This is because there is a magic ACPI hid
> that can use this table even from ACPI.
>
Sure.
>>   	},
>>   	.probe = bme680_spi_probe,
>>   	.id_table = bme680_spi_id,