linux-kernel - Re: [PATCHv6 0/4] iio: adc: exynos_adc: Support Exynos3250 ADC and code clean

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:	Fri, 18 Jul 2014 15:46:51 +0530
From:	Naveen Krishna Ch <naveenkrishna.ch@...il.com>
To:	Arnd Bergmann <arnd@...db.de>
Cc:	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>,
	Chanwoo Choi <cw00.choi@...sung.com>, jic23@...nel.org,
	My self <ch.naveen@...sung.com>, mark.rutland@....com,
	devicetree@...r.kernel.org, Kukjin Kim <kgene.kim@...sung.com>,
	pawel.moll@....com, ijc+devicetree@...lion.org.uk,
	linux-iio@...r.kernel.org, t.figa@...sung.com,
	rdunlap@...radead.org, linux-doc@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	"linux-samsung-soc@...r.kernel.org" 
	<linux-samsung-soc@...r.kernel.org>, kyungmin.park@...sung.com,
	robh+dt@...nel.org, galak@...eaurora.org
Subject: Re: [PATCHv6 0/4] iio: adc: exynos_adc: Support Exynos3250 ADC and
 code clean

Hello All,

On 18 July 2014 15:43, Naveen Krishna Ch <naveenkrishna.ch@...il.com> wrote:
> Hello Arnd,
>
> On 18 July 2014 15:08, Arnd Bergmann <arnd@...db.de> wrote:
>> On Friday 18 July 2014 14:59:42 Chanwoo Choi wrote:
>>> This patchset support Exynos3250 ADC (Analog Digital Converter) because
>>> Exynos3250 has additional special clock for ADC IP.
>>>
>>
>> by coincidence, I have just looked at the same driver in order to
>> add support for s3c24xx and s3c64xx, so we can remove the plat-samsung
>> adc framework they still use.  Those changes would naturally conflict
>> with yours, but I think it makes sense for your patches to come first.
>>
>> I'll comment a bit more on the individual patches. I didn't have
>> interest in them earlier, so I didn't comment so far.
>>
>> Another aspect that came up is the touchscreen support. Right now,
>> there is drivers/input/touchscreen/s3c2410_ts.c which is intimately
>> tied to arch/arm/plat-samsung/adc.c. The best way forward (as discussed
>> on IRC as few days ago) seems to be to integrate support for that into
>> the exynos_adc driver. Can you comment on which parts actually support
>> touchscreen? Did touchscreen support get dropped in the exynos hardware,
>> or is the driver just missing at the moment?
>
> SoCs from Samsung before Exynos4 had and ADC based Touch screen
> and the driver under arch/arm/plat-samsung/adc.c and
> drivers/input/touchscreen/s3c2410_ts.c used to work together.
>
> Infact, the interrupt routine and priorities in plat-samsung/adc.c
> driver as written keeping the Touchscreen in mind.
>
> After Exynos4, ADC IP remained. But, the touch screen was removed in hardware.

At least on Exynos4210> i'm not sure about the other Exynos4 series.
I will try to verify the user manuals.

>
> As per suggestion from Doug Anderson, I've implemented IIO based ADC
> driver started to support from exynos5250.
>
>>
>>         Arnd
>> --
>> To unsubscribe from this list: send the line "unsubscribe linux-samsung-soc" in
>> the body of a message to majordomo@...r.kernel.org
>> More majordomo info at  http://vger.kernel.org/majordomo-info.html
>
>
>
> --
> Shine bright,
> (: Nav :)



-- 
Shine bright,
(: Nav :)
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/