[alsa-devel] [PATCH v2 6/9] ARM: mx31ads: add audmux device
richard.zhao at freescale.com
Thu Feb 2 10:24:28 CET 2012
On Thu, Feb 02, 2012 at 05:11:34PM +0800, Shawn Guo wrote:
> On Thu, Feb 02, 2012 at 04:55:23PM +0800, Shawn Guo wrote:
> > On Thu, Feb 02, 2012 at 10:12:05AM +0800, Richard Zhao wrote:
> > > Signed-off-by: Richard Zhao <richard.zhao at linaro.org>
> > > ---
> > > arch/arm/mach-imx/mach-mx31ads.c | 10 ++++++++++
> > > arch/arm/plat-mxc/include/mach/mx31.h | 1 +
> > > 2 files changed, 11 insertions(+), 0 deletions(-)
> > >
> > Hmm, let's see who are actually using mxc_audmux_v2_configure_port().
> > $ git grep -n mxc_audmux_v2_configure_port arch/arm/
> > arch/arm/mach-imx/eukrea_mbimxsd25-baseboard.c:246: mxc_audmux_v2_configure_port(0,
> > arch/arm/mach-imx/eukrea_mbimxsd25-baseboard.c:254: mxc_audmux_v2_configure_port(4,
> > arch/arm/mach-imx/eukrea_mbimxsd35-baseboard.c:257: mxc_audmux_v2_configure_port(0,
> > arch/arm/mach-imx/eukrea_mbimxsd35-baseboard.c:265: mxc_audmux_v2_configure_port(3,
> > arch/arm/mach-imx/mach-pcm043.c:365: mxc_audmux_v2_configure_port(3,
> > arch/arm/mach-imx/mach-pcm043.c:371: mxc_audmux_v2_configure_port(0,
I didn't grep arch/arm. where is pc043 asoc machine file?
> As we are moving audmux into sound/soc/imx, it makes less sense to
> still keep these calls in board files.
It don't corrupt git bisect. We don't have to include it in this patch.
> Instead, I prefer to call it
> from machine driver like what wm1133-ev1 does below.
Maybe pass the info as asoc machine driver pdata.
> Or we can simply
> make the it a audmux-self call with 3 parameters it needs retrieved
> from platform_data or device tree, so that machine driver does not
> even bother with the call. Makes sense?
audux configuration may change after initial set. For example, it may use
one configuration for audio playback, but use another when you connect a
BT audio device.
> > $ git grep -n mxc_audmux_v2_configure_port sound/soc/imx/
> > sound/soc/imx/wm1133-ev1.c:277: mxc_audmux_v2_configure_port(MX31_AUDMUX_PORT1_SSI0, ptcr, pdcr);
> > sound/soc/imx/wm1133-ev1.c:281: mxc_audmux_v2_configure_port(MX31_AUDMUX_PORT5_SSI_PINS_5, ptcr, pdcr);
It's imx31ads board.
> > I guess audmux device needs to be added for all these users. And for
> > sake of bisect, it should be added as part of patch #5.
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> linux-arm-kernel at lists.infradead.org
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