linux-kernel - Re: [PATCH 6/8] mfd: Add STMPE1600 support

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Message-ID: <5718DAEC.6030207@st.com>
Date:	Thu, 21 Apr 2016 15:51:40 +0200
From:	Patrice Chotard <patrice.chotard@...com>
To:	Linus Walleij <linus.walleij@...aro.org>
CC:	Lee Jones <lee.jones@...aro.org>,
	Alexandre Courbot <gnurou@...il.com>,
	"linux-gpio@...r.kernel.org" <linux-gpio@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>,
	Maxime Coquelin <maxime.coquelin@...com>,
	<amelie.delaunay@...com>, Shawn Guo <shawnguo@...nel.org>,
	Sascha Hauer <kernel@...gutronix.de>,
	Dinh Nguyen <dinguyen@...nsource.altera.com>,
	Viresh Kumar <vireshk@...nel.org>,
	Shiraz Hashim <shiraz.linux.kernel@...il.com>,
	Stephen Warren <swarren@...dotorg.org>,
	Thierry Reding <thierry.reding@...il.com>
Subject: Re: [PATCH 6/8] mfd: Add STMPE1600 support



On 04/20/2016 04:43 PM, Linus Walleij wrote:
> On Tue, Apr 19, 2016 at 2:18 PM,  <patrice.chotard@...com> wrote:
>
>> From: Patrice Chotard <patrice.chotard@...com>
>>
>> STMPE1600 is a 16-bit port expander.
>> Datasheet is available here :
>> http://www2.st.com/content/st_com/en/products/interfaces-and-transceivers/
>> i-o-expanders-and-level-translators/i-o-expanders/stmpe1600.html
>>
>> As STMPE1600's SYS_CTRL register has the same layout as
>> STMPE801 variant, unify STMPExxx_REG_SYS_CTRL_RESET/INT_EN/INT_HI
>> bit masks to more generic STMPE_SYS_CTRL_RESET/INT_EN/INT_HI
>>
>> Signed-off-by: Amelie DELAUNAY <amelie.delaunay@...com>
>> Signed-off-by: Patrice Chotard <patrice.chotard@...com>
> (...)
>>   #define STMPE_SYS_CTRL_RESET   (1 << 7)
>> +#define STMPE_SYS_CTRL_INT_EN  (1 << 2)
>> +#define STMPE_SYS_CTRL_INT_HI  (1 << 0)
>>
>>   /*
>>    * STMPE801
>> @@ -121,10 +123,6 @@ int stmpe_remove(struct stmpe *stmpe);
>>   #define STMPE801_REG_GPIO_SET_PIN      0x11
>>   #define STMPE801_REG_GPIO_DIR          0x12
>>
>> -#define STMPE801_REG_SYS_CTRL_RESET    (1 << 7)
>> -#define STMPE801_REG_SYS_CTRL_INT_EN   (1 << 2)
>> -#define STMPE801_REG_SYS_CTRL_INT_HI   (1 << 0)
> This looks like unrelated cleanups?
> Should this be in the reset enablement patch?
> (It's OK with me though.)

Not completely unrelated as STMPE801 and STMPE1600 use the same SYS_CTRL 
register layout.
But nevertheless i will put this fix in a separate patch.

Thanks

Patrice

>
> With that fixed:
> Acked-by: Linus Walleij <linus.walleij@...aro.org>
>
> Yours,
> Linus Walleij
Hi