linux-kernel - Re: [PATCH 1/3] mfd: max77693: Add defines for charger current control

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Date:   Tue, 27 Sep 2016 15:54:04 +0200
From:   Wolfgang Wiedmeyer <wolfgit@...dmeyer.de>
To:     Krzysztof Kozlowski <krzk@...nel.org>
Cc:     sre@...nel.org, dbaryshkov@...il.com, dwmw2@...radead.org,
        cw00.choi@...sung.com, b.zolnierkie@...sung.com,
        broonie@...nel.org, lgirdwood@...il.com, lee.jones@...aro.org,
        linux-pm@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/3] mfd: max77693: Add defines for charger current control


Krzysztof Kozlowski writes:

> On Tue, Sep 27, 2016 at 01:31:08AM +0200, Wolfgang Wiedmeyer wrote:
>> This prepares for an updated regulator and charger driver. The defines
>> are needed to set the maximum input current and the fast charge
>> current.
>> 
>> Signed-off-by: Wolfgang Wiedmeyer <wolfgit@...dmeyer.de>
>
> This shouldn't be separate patch, because:
> 1. You are touching later power and regulator so this patch should be
> applied to one and then pulled by other... a lot of unneeded work.
> 2. It is difficult to find which new code is needed for which driver.
>
> Simpler approach might work - when changing the regulator or psy driver,
> just change the header as needed. Unless there are conflicts and both of
> them need the same?

No, no conflicts. I will change the header as needed and won't do a
separate patch.

Thanks,
Wolfgang

> Best regards,
> Krzysztof
>
>> ---
>>  include/linux/mfd/max77693-private.h | 7 +++++++
>>  1 file changed, 7 insertions(+)
>> 
>> diff --git a/include/linux/mfd/max77693-private.h b/include/linux/mfd/max77693-private.h
>> index 3c7a63b..ca18344 100644
>> --- a/include/linux/mfd/max77693-private.h
>> +++ b/include/linux/mfd/max77693-private.h
>> @@ -222,6 +222,9 @@ enum max77693_charger_battery_state {
>>  #define CHG_CNFG_00_CHG_MASK		0x1
>>  #define CHG_CNFG_00_BUCK_MASK		0x4
>>  
>> +/* MAX77693 CHG_CNFG_02 register */
>> +#define CHG_CNFG_02_CC_MASK		0x3F
>> +
>>  /* MAX77693_CHG_REG_CHG_CNFG_01 register */
>>  #define CHG_CNFG_01_FCHGTIME_SHIFT	0
>>  #define CHG_CNFG_01_CHGRSTRT_SHIFT	4
>> @@ -258,6 +261,10 @@ enum max77693_charger_battery_state {
>>  
>>  /* MAX77693 CHG_CNFG_09 Register */
>>  #define CHG_CNFG_09_CHGIN_ILIM_MASK	0x7F
>> +#define CHG_CNFG_09_CHGIN_ILIM_500_MAX	500000
>> +#define CHG_CNFG_09_CHGIN_ILIM_500_MIN	470000
>> +#define CHG_CNFG_09_CHGIN_ILIM_0_MAX	60000
>> +#define CHG_CNFG_09_CHGIN_ILIM_0_MIN	0
>>  
>>  /* MAX77693 CHG_CTRL Register */
>>  #define SAFEOUT_CTRL_SAFEOUT1_MASK	0x3
>> -- 
>> 2.8.0.rc3
>> 


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