linux-kernel - Re: [PATCH v3 01/10] mfd: tps65218: Remove redundant read wrapper

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Message-ID: <577220E4.9060708@ti.com>
Date:	Tue, 28 Jun 2016 12:31:56 +0530
From:	Keerthy <a0393675@...com>
To:	Lee Jones <lee.jones@...aro.org>, Keerthy <j-keerthy@...com>
CC:	<dmitry.torokhov@...il.com>, <linus.walleij@...aro.org>,
	<gnurou@...il.com>, <broonie@...nel.org>, <tony@...mide.com>,
	<linux-omap@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
	<devicetree@...r.kernel.org>, <linux-gpio@...r.kernel.org>,
	<linux-input@...r.kernel.org>, <robh+dt@...nel.org>,
	<linux-arm-kernel@...ts.infradead.org>
Subject: Re: [PATCH v3 01/10] mfd: tps65218: Remove redundant read wrapper



On Tuesday 28 June 2016 12:30 PM, Lee Jones wrote:
> On Tue, 28 Jun 2016, Keerthy wrote:
>
>> Currently read directly calls the repmap read function. Hence
>> remove the redundant wrapper and use regmap read wherever
>> needed.
>>
>> Signed-off-by: Keerthy <j-keerthy@...com>
>> ---
>>
>> Changes in v3:
>>
>>    * Cleaned up tps65218-pwrbutton and gpio drivers to remove
>>      tps65218_reg_read instances.
>>
>>   drivers/gpio/gpio-tps65218.c            |  3 ++-
>>   drivers/input/misc/tps65218-pwrbutton.c |  3 ++-
>>   drivers/mfd/tps65218.c                  | 16 +---------------
>>   drivers/regulator/tps65218-regulator.c  |  3 ++-
>>   include/linux/mfd/tps65218.h            |  2 --
>>   5 files changed, 7 insertions(+), 20 deletions(-)
>
> I like the idea.  So, as long as the patch is properly build tested:
>
> For the MFD part:
>    Acked-by: Lee Jones <lee.jones@...aro.org>

I will do the testing again. Post a v4. With all the suggested changes. 
Thanks for the review.

>
>> diff --git a/drivers/gpio/gpio-tps65218.c b/drivers/gpio/gpio-tps65218.c
>> index 0eaeac8..0f9d9bd 100644
>> --- a/drivers/gpio/gpio-tps65218.c
>> +++ b/drivers/gpio/gpio-tps65218.c
>> @@ -16,6 +16,7 @@
>>   #include <linux/errno.h>
>>   #include <linux/gpio/driver.h>
>>   #include <linux/platform_device.h>
>> +#include <linux/regmap.h>
>>   #include <linux/mfd/tps65218.h>
>>
>>   struct tps65218_gpio {
>> @@ -30,7 +31,7 @@ static int tps65218_gpio_get(struct gpio_chip *gc, unsigned offset)
>>   	unsigned int val;
>>   	int ret;
>>
>> -	ret = tps65218_reg_read(tps65218, TPS65218_REG_ENABLE2, &val);
>> +	ret = regmap_read(tps65218->regmap, TPS65218_REG_ENABLE2, &val);
>>   	if (ret)
>>   		return ret;
>>
>> diff --git a/drivers/input/misc/tps65218-pwrbutton.c b/drivers/input/misc/tps65218-pwrbutton.c
>> index a39b626..2bba8de 100644
>> --- a/drivers/input/misc/tps65218-pwrbutton.c
>> +++ b/drivers/input/misc/tps65218-pwrbutton.c
>> @@ -22,6 +22,7 @@
>>   #include <linux/module.h>
>>   #include <linux/of.h>
>>   #include <linux/platform_device.h>
>> +#include <linux/regmap.h>
>>   #include <linux/slab.h>
>>
>>   struct tps65218_pwrbutton {
>> @@ -36,7 +37,7 @@ static irqreturn_t tps65218_pwr_irq(int irq, void *_pwr)
>>   	unsigned int reg;
>>   	int error;
>>
>> -	error = tps65218_reg_read(pwr->tps, TPS65218_REG_STATUS, &reg);
>> +	error = regmap_read(pwr->tps->regmap, TPS65218_REG_STATUS, &reg);
>>   	if (error) {
>>   		dev_err(pwr->dev, "can't read register: %d\n", error);
>>   		goto out;
>> diff --git a/drivers/mfd/tps65218.c b/drivers/mfd/tps65218.c
>> index 80b9dc3..f20a531 100644
>> --- a/drivers/mfd/tps65218.c
>> +++ b/drivers/mfd/tps65218.c
>> @@ -34,20 +34,6 @@
>>   #define TPS65218_PASSWORD_REGS_UNLOCK   0x7D
>>
>>   /**
>> - * tps65218_reg_read: Read a single tps65218 register.
>> - *
>> - * @tps: Device to read from.
>> - * @reg: Register to read.
>> - * @val: Contians the value
>> - */
>> -int tps65218_reg_read(struct tps65218 *tps, unsigned int reg,
>> -			unsigned int *val)
>> -{
>> -	return regmap_read(tps->regmap, reg, val);
>> -}
>> -EXPORT_SYMBOL_GPL(tps65218_reg_read);
>> -
>> -/**
>>    * tps65218_reg_write: Write a single tps65218 register.
>>    *
>>    * @tps65218: Device to write to.
>> @@ -93,7 +79,7 @@ static int tps65218_update_bits(struct tps65218 *tps, unsigned int reg,
>>   	int ret;
>>   	unsigned int data;
>>
>> -	ret = tps65218_reg_read(tps, reg, &data);
>> +	ret = regmap_read(tps->regmap, reg, &data);
>>   	if (ret) {
>>   		dev_err(tps->dev, "Read from reg 0x%x failed\n", reg);
>>   		return ret;
>> diff --git a/drivers/regulator/tps65218-regulator.c b/drivers/regulator/tps65218-regulator.c
>> index a5e5634..679ab2f 100644
>> --- a/drivers/regulator/tps65218-regulator.c
>> +++ b/drivers/regulator/tps65218-regulator.c
>> @@ -22,6 +22,7 @@
>>   #include <linux/err.h>
>>   #include <linux/platform_device.h>
>>   #include <linux/of_device.h>
>> +#include <linux/regmap.h>
>>   #include <linux/regulator/of_regulator.h>
>>   #include <linux/regulator/driver.h>
>>   #include <linux/regulator/machine.h>
>> @@ -224,7 +225,7 @@ static int tps65218_pmic_get_current_limit(struct regulator_dev *dev)
>>   	unsigned int index;
>>   	struct tps65218 *tps = rdev_get_drvdata(dev);
>>
>> -	retval = tps65218_reg_read(tps, dev->desc->csel_reg, &index);
>> +	retval = regmap_read(tps->regmap, dev->desc->csel_reg, &index);
>>   	if (retval < 0)
>>   		return retval;
>>
>> diff --git a/include/linux/mfd/tps65218.h b/include/linux/mfd/tps65218.h
>> index d58f3b5..7c9241f 100644
>> --- a/include/linux/mfd/tps65218.h
>> +++ b/include/linux/mfd/tps65218.h
>> @@ -276,8 +276,6 @@ struct tps65218 {
>>   	struct regmap *regmap;
>>   };
>>
>> -int tps65218_reg_read(struct tps65218 *tps, unsigned int reg,
>> -					unsigned int *val);
>>   int tps65218_reg_write(struct tps65218 *tps, unsigned int reg,
>>   			unsigned int val, unsigned int level);
>>   int tps65218_set_bits(struct tps65218 *tps, unsigned int reg,
>