[alsa-devel] [PATCH v2 0/3] Support more sample rates, let the rates normal work

[Caesar Wang]

That's seem the moment rockchip-codec driver other than 44100 and 48000
do not work.
Says the (max98090, rt5640).

----
As the chromeos reported
issue:(https://chromium.googlesource.com/chromiumos/third_party/kernel/+/v3.14)

For detail:
        In that bug we want to add 32000 to
        sound/soc/rockchip/rockchip_max98090.c rk_aif1_hw_params.
        However that does not work.

        Previously, in
        https://chromium-review.googlesource.com/#/c/268398/ , rate
        8000, 1600, 96000 were added.
        However, those rates do not work. I got the same audio as 48000
        when I run

        aplay -D hw:0,0
        /usr/local/autotest/cros/audio/fix_440_16_half.raw --rate 8000
        -f S16_LE -c2
        aplay -D hw:0,0
        /usr/local/autotest/cros/audio/fix_440_16_half.raw --rate 16000
        -f S16_LE -c2
        aplay -D hw:0,0
        /usr/local/autotest/cros/audio/fix_440_16_half.raw --rate 96000
        -f S16_LE -c2

        They all sound identical to
        aplay -D hw:0,0
        /usr/local/autotest/cros/audio/fix_440_16_half.raw --rate 48000
        -f S16_LE -c2

        Also, recording using
        aplay -D hw:0,0 /usr/local/test.raw --rate 96000 -f S16_LE -c2
        and examine the output we see it was recording using 48000.

        Okay, let's add this series patchs to fix this issue.

        arecord -D hw:0 -f S16_LE -c 2 --rate [8000-96000] -d 5 foobar.wav
        and
            aplay -D hw:0 foobar.wav
Tested on veyron devices.


Changes in v2:
- move the set clock divider into rockchip i2s.
- add the 64000 sample rates for max98090.
- add the 64000 sample rate for rt5645.

Caesar Wang (3):
  ASoC: rockchip: i2s: change bclk and lrck according to sample rates
  ASoC: rockchip-max98090: Allow more sample rates
  ASoC: rockchip-rt5645: Allow more sample rates

 sound/soc/rockchip/rockchip_i2s.c      | 23 +++++++++++++++++++++++
 sound/soc/rockchip/rockchip_max98090.c |  6 ++++++
 sound/soc/rockchip/rockchip_rt5645.c   |  6 ++++++
 3 files changed, 35 insertions(+)

-- 
1.9.1