linux-kernel - Re: [PATCH 1/2] mfd: max5970: Rename driver and remove wildcard

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Message-ID: <14badbda-9f27-bd5d-bd59-5515c9824886@9elements.com>
Date:   Thu, 18 May 2023 19:14:14 +0530
From:   Naresh Solanki <naresh.solanki@...ements.com>
To:     Lee Jones <lee@...nel.org>
Cc:     Liam Girdwood <lgirdwood@...il.com>,
        Mark Brown <broonie@...nel.org>, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/2] mfd: max5970: Rename driver and remove wildcard

Hi Lee,

On 18-05-2023 03:44 pm, Lee Jones wrote:
> On Thu, 27 Apr 2023, Naresh Solanki wrote:
> 
>> The previous version of this driver included wildcards in file names
>> and descriptions. This patch renames the driver to only support MAX5970
>> and MAX5978, which are the only chips that the driver actually supports.
> 
> So multiple devices are supported:
> 
>    MAX5970  ... AND
>    MAX5978  ... thus
>    MAX597X  ... does make sense, no?
>   
>   What are you trying to achieve?
Understood. It is important to note that there are indeed other 
unrelated chips in addition to MAX5970 and MAX5978. Examples include 
MAX5971, which is a Single-Port, 40W, IEEE 802.3af/at PSE Controller 
with Integrated MOSFET, and MAX5974A, an Active-Clamped, 
Spread-Spectrum, Current-Mode PWM Controller, among others.

With this change, the intention is to be specific about the chips the 
driver supports. Instead of using wildcards or a broad "MAX597X" 
designation, the patch aims to exclusively support the MAX5970 and 
MAX5978 chips.

> 
>> Signed-off-by: Naresh Solanki <Naresh.Solanki@...ements.com>
>> ---
>>   drivers/mfd/Kconfig                        |  4 ++--
>>   drivers/mfd/simple-mfd-i2c.c               | 18 +++++++++---------
>>   include/linux/mfd/{max597x.h => max5970.h} | 16 ++++++++--------
>>   3 files changed, 19 insertions(+), 19 deletions(-)
>>   rename include/linux/mfd/{max597x.h => max5970.h} (92%)
>>
>> diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig
>> index e90463c4441c..71231388e03c 100644
>> --- a/drivers/mfd/Kconfig
>> +++ b/drivers/mfd/Kconfig
>> @@ -266,8 +266,8 @@ config MFD_MADERA_SPI
>>   	  Support for the Cirrus Logic Madera platform audio SoC
>>   	  core functionality controlled via SPI.
>>   
>> -config MFD_MAX597X
>> -	tristate "Maxim 597x power switch and monitor"
>> +config MFD_MAX5970
>> +	tristate "Maxim 5970/5978 power switch and monitor"
>>   	depends on (I2C && OF)
>>   	select MFD_SIMPLE_MFD_I2C
>>   	help
>> diff --git a/drivers/mfd/simple-mfd-i2c.c b/drivers/mfd/simple-mfd-i2c.c
>> index 20782b4dd172..1f1c007560d8 100644
>> --- a/drivers/mfd/simple-mfd-i2c.c
>> +++ b/drivers/mfd/simple-mfd-i2c.c
>> @@ -72,22 +72,22 @@ static const struct simple_mfd_data silergy_sy7636a = {
>>   	.mfd_cell_size = ARRAY_SIZE(sy7636a_cells),
>>   };
>>   
>> -static const struct mfd_cell max597x_cells[] = {
>> -	{ .name = "max597x-regulator", },
>> -	{ .name = "max597x-iio", },
>> -	{ .name = "max597x-led", },
>> +static const struct mfd_cell max5970_cells[] = {
>> +	{ .name = "max5970-regulator", },
>> +	{ .name = "max5970-iio", },
>> +	{ .name = "max5970-led", },
>>   };
>>   
>> -static const struct simple_mfd_data maxim_max597x = {
>> -	.mfd_cell = max597x_cells,
>> -	.mfd_cell_size = ARRAY_SIZE(max597x_cells),
>> +static const struct simple_mfd_data maxim_max5970 = {
>> +	.mfd_cell = max5970_cells,
>> +	.mfd_cell_size = ARRAY_SIZE(max5970_cells),
>>   };
>>   
>>   static const struct of_device_id simple_mfd_i2c_of_match[] = {
>>   	{ .compatible = "kontron,sl28cpld" },
>>   	{ .compatible = "silergy,sy7636a", .data = &silergy_sy7636a},
>> -	{ .compatible = "maxim,max5970", .data = &maxim_max597x},
>> -	{ .compatible = "maxim,max5978", .data = &maxim_max597x},
>> +	{ .compatible = "maxim,max5970", .data = &maxim_max5970},
>> +	{ .compatible = "maxim,max5978", .data = &maxim_max5970},
>>   	{}
>>   };
>>   MODULE_DEVICE_TABLE(of, simple_mfd_i2c_of_match);
>> diff --git a/include/linux/mfd/max597x.h b/include/linux/mfd/max5970.h
>> similarity index 92%
>> rename from include/linux/mfd/max597x.h
>> rename to include/linux/mfd/max5970.h
>> index a850b2e02e6a..762a7d40c843 100644
>> --- a/include/linux/mfd/max597x.h
>> +++ b/include/linux/mfd/max5970.h
>> @@ -7,25 +7,25 @@
>>    * Author: Patrick Rudolph <patrick.rudolph@...ements.com>
>>    */
>>   
>> -#ifndef _MFD_MAX597X_H
>> -#define _MFD_MAX597X_H
>> +#ifndef _MFD_MAX5970_H
>> +#define _MFD_MAX5970_H
>>   
>>   #include <linux/regmap.h>
>>   
>>   #define MAX5970_NUM_SWITCHES 2
>>   #define MAX5978_NUM_SWITCHES 1
>> -#define MAX597X_NUM_LEDS     4
>> +#define MAX5970_NUM_LEDS     4
>>   
>> -struct max597x_data {
>> +struct max5970_data {
>>   	int num_switches;
>>   	u32 irng[MAX5970_NUM_SWITCHES];
>>   	u32 mon_rng[MAX5970_NUM_SWITCHES];
>>   	u32 shunt_micro_ohms[MAX5970_NUM_SWITCHES];
>>   };
>>   
>> -enum max597x_chip_type {
>> -	MAX597x_TYPE_MAX5978 = 1,
>> -	MAX597x_TYPE_MAX5970,
>> +enum max5970_chip_type {
>> +	TYPE_MAX5978 = 1,
>> +	TYPE_MAX5970,
>>   };
>>   
>>   #define MAX5970_REG_CURRENT_L(ch)		(0x01 + (ch) * 4)
>> @@ -93,4 +93,4 @@ enum max597x_chip_type {
>>   #define MAX_REGISTERS			0x49
>>   #define ADC_MASK			0x3FF
>>   
>> -#endif				/* _MFD_MAX597X_H */
>> +#endif				/* _MFD_MAX5970_H */
>>
>> base-commit: b4c288cfd2f84c44994330c408e14645d45dee5b
>> -- 
>> 2.39.1
>>
> 

Regards,
Naresh