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From: Stephen Warren <swarren@nvidia.com>
To: Mark Brown <broonie@opensource.wolfsonmicro.com>
Cc: "linux-tegra@vger.kernel.org" <linux-tegra@vger.kernel.org>,
	"alsa-devel@alsa-project.org" <alsa-devel@alsa-project.org>,
	"lrg@slimlogic.co.uk" <lrg@slimlogic.co.uk>
Subject: Re: [PATCH 0/3] Tegra: Add internal speaker support
Date: Tue, 18 Jan 2011 16:29:37 -0800	[thread overview]
Message-ID: <74CDBE0F657A3D45AFBB94109FB122FF0310955319@HQMAIL01.nvidia.com> (raw)
In-Reply-To: <20110119002513.GB4337@opensource.wolfsonmicro.com>

Mark Brown wrote:
> On Tue, Jan 18, 2011 at 04:37:36PM -0700, Stephen Warren wrote:
> 
> > a) Is this the right way to expose GPIO APIs from a codec? The tlv320aic3
> >    seems to do it this way, but wm8962.c uses the generic GPIO API. I shied
> >    away from the latter, since I wasn't sure how to name the WM8903's GPIOs
> >    in the gpio_* calls. I suppose it'd need a bunch of GPIO driver platform
> >    data to hook it all together and name GPIOs from a mach-tegra/include
> >    header file, but if this is the way to go, I need to read up on that more.
> 
> What naming is required for the GPIOs?  GPIOs are referred to by number
> in Linux.

Naming/numbering mean the same thing to me; I have to pass a number to
gpio_request/gpio_set_value, either by hard-coded number or name (i.e. #define
referring to some number).

I'll go read up on gpiolib some more to see how those API-level numbers get
mapped to a specific controller and GPIO number.

-- 
nvpublic

  reply	other threads:[~2011-01-19  0:29 UTC|newest]

Thread overview: 45+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <1295393859-3396-1-git-send-email-swarren@wwwdotorg.org>
     [not found] ` <1295393859-3396-2-git-send-email-swarren@wwwdotorg.org>
2011-01-19  0:21   ` [PATCH 1/3] ASoC: WM8903: Add wm8903_set_gpio Mark Brown
2011-01-19  0:25 ` [PATCH 0/3] Tegra: Add internal speaker support Mark Brown
2011-01-19  0:29   ` Stephen Warren [this message]
     [not found]     ` <AANLkTi=m585PZum2NQUOqq1PiqP84LuT-qCruzaO7x7t@mail.gmail.com>
2011-01-19 11:30       ` Mark Brown
2011-01-19 12:47 ` Liam Girdwood
2011-01-19 20:50 ` [PATCH v2 0/4] Tegra: Harmony: " Stephen Warren
2011-01-20 10:04   ` Liam Girdwood
2011-01-19 20:50 ` [PATCH v2 1/4] ASoC: WM8903: Expose GPIOs through gpiolib Stephen Warren
2011-01-20 11:53   ` Mark Brown
2011-01-20 17:23     ` Stephen Warren
2011-01-20 20:33       ` Mark Brown
2011-01-19 20:50 ` [PATCH v2 2/4] ARM: tegra: Add Harmony sound platform data type Stephen Warren
2011-01-19 20:50 ` [PATCH v2 3/4] ARM: tegra: Platform data fixes for ASoC driver updates Stephen Warren
2011-01-19 20:50 ` [PATCH v2 4/4] ASoC: tegra: Harmony: Support the internal speaker Stephen Warren
2011-01-20 11:58   ` Mark Brown
2011-01-25 20:29   ` Mark Brown
2011-01-26  3:46     ` Stephen Warren
2011-01-26 11:00       ` Mark Brown
2011-01-20 20:52 ` [PATCH v3 0/4] Tegra: Harmony: Add internal speaker support Stephen Warren
2011-01-20 20:52 ` [PATCH v3 1/4] ASoC: WM8903: Expose GPIOs through gpiolib Stephen Warren
2011-01-21 12:05   ` Mark Brown
2011-01-20 20:52 ` [PATCH v3 2/4] ARM: tegra: Add Harmony sound platform data type Stephen Warren
2011-01-21 18:43   ` Colin Cross
2011-01-21 22:35     ` Stephen Warren
2011-01-21 22:41       ` Colin Cross
2011-01-21 23:41         ` Mark Brown
2011-01-21 23:49           ` Stephen Warren
2011-01-22  5:14             ` Olof Johansson
2011-01-22  5:34               ` Stephen Warren
2011-01-22  5:40                 ` Olof Johansson
2011-01-20 20:52 ` [PATCH v3 3/4] ARM: tegra: Platform data fixes for ASoC driver updates Stephen Warren
2011-01-20 21:22   ` Mark Brown
2011-01-20 22:15     ` Liam Girdwood
2011-01-21 17:45     ` Stephen Warren
2011-01-21 17:50       ` Mark Brown
2011-01-21 18:06         ` Stephen Warren
2011-01-21 18:11           ` Mark Brown
2011-01-21 18:22             ` Stephen Warren
2011-01-21 18:27               ` Mark Brown
2011-01-21 18:36                 ` Stephen Warren
2011-01-21 18:39                   ` Mark Brown
2011-01-21 18:51                     ` Stephen Warren
2011-01-21 18:57                       ` Mark Brown
2011-01-21 22:41                         ` Stephen Warren
2011-01-20 20:52 ` [PATCH v3 4/4] ASoC: tegra: Harmony: Support the internal speaker Stephen Warren

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