linux-kernel - Re: [alsa-devel] [PATCH v2 4/5] ARM: dts: rockchip: Add shared file for audio related nodes for veyron boards

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Date:	Tue, 17 May 2016 15:30:28 +0200
From:	Heiko Stuebner <heiko@...ech.de>
To:	Enric Balletbo Serra <eballetbo@...il.com>,
	Enric Balletbo i Serra <enric.balletbo@...labora.com>
Cc:	linux-rockchip@...ts.infradead.org, alsa-devel@...a-project.org,
	Mark Brown <broonie@...nel.org>, linux-kernel@...r.kernel.org
Subject: Re: [alsa-devel] [PATCH v2 4/5] ARM: dts: rockchip: Add shared file for audio related nodes for veyron boards

Am Dienstag, 17. Mai 2016, 11:36:23 schrieb Heiko Stuebner:
> Am Dienstag, 17. Mai 2016, 10:14:55 schrieb Enric Balletbo Serra:
> > Hi Heiko,
> > 
> > 2016-05-16 0:06 GMT+02:00 Heiko Stuebner <heiko@...ech.de>:
> > > Am Montag, 9. Mai 2016, 12:46:34 schrieb Enric Balletbo i Serra:
> > >> Set i2s block to "okay", add sound node for max98090 with gpios for
> > >> HP and Mic detect and pinctrl, and add a max98090 device and ts3a227e
> > >> to
> > >> the correct i2c bus.
> > >> 
> > >> Signed-off-by: Enric Balletbo i Serra <enric.balletbo@...labora.com>
> > > 
> > > I only got a "applied" reply from Marks scripts for patch 3/5, so only
> > > today saw that all 3 actually got applied.
> > > 
> > > Anyway, I've applied this to my dts32-branch for 4.8 now [0] with some
> > > modifications regarding
> > > - the commit subject+message
> > > - ordering
> > > - io_domains access (via the phandle now)
> > > - regulator suspend property
> > > so maybe take a look and holler if you see a mistake.
> > 
> > The changes looks good to me, thanks.
> > 
> > > I was able to get audio over the headphones (so definitly an
> > > improvement), but so far not over the built-in speakers. Did you need
> > > to do something special in the configuration for this?
> > 
> > I added an UCM file [1] to my setup to test this and tested as follows
> > (you can also use alsamixer but as you know this is not safe though ;)
> > )
> > 
> > # enable the speaker at bootup:
> > alsaucm -c ROCKCHIP-I2S set _verb HiFi
> > # set speaker to half loudness:
> > amixer set Speaker 50%
> > # play something
> > aplay music.wav
> > # enable headphones (disable speaker):
> > alsaucm -c ROCKCHIP-I2S set _verb HiFi set _enadev Headphone
> > # set headphones to half loudness:
> > amixer set Headphone 50%
> > # play something
> > aplay music.wav
> > # disable headphones (enable speaker):
> > alsaucm -c ROCKCHIP-I2S set _verb HiFi set _disdev Headphone
> 
> woohoo ... sound on the speakers :-D

one thing I'm not sure about is the naming though.

The ucm profiles most likely are board-specific and looking at the other alsa 
ucm subdirs, they really are named after their boards (like daisy-i2s for 
some exynos chromebooks). Hogging ROCKCHIP-I2S for veyron chromebooks seems 
wrong especially wrt. other Rockchip devices. Shouldn't this be named 
VEYRON-I2S or so instead - same on the kernel side probably.


Heiko