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| author | Shengjiu Wang <shengjiu.wang@nxp.com> | 2021-03-03 11:07:42 +0800 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2021-03-25 13:59:00 +0000 |
| commit | 99067c07e8d877035f6249d194a317c78b7d052d (patch) | |
| tree | 311ee5cd2a0acff27ece5e8eb844ccb20131fb84 | |
| parent | df8077c6fe64fe98c1b1c1f9ecf84afc773e726f (diff) | |
| download | linux-stable-99067c07e8d877035f6249d194a317c78b7d052d.tar.gz linux-stable-99067c07e8d877035f6249d194a317c78b7d052d.tar.bz2 linux-stable-99067c07e8d877035f6249d194a317c78b7d052d.zip | |
ASoC: wm8960: Remove bitclk relax condition in wm8960_configure_sysclk
The call sequence in wm8960_configure_clocking is
ret = wm8960_configure_sysclk();
if (ret >= 0)
goto configure_clock;
....
ret = wm8960_configure_pll();
configure_clock:
...
wm8960_configure_sysclk is called before wm8960_configure_pll, as
there is bitclk relax on both functions, so wm8960_configure_sysclk
always return success, then wm8960_configure_pll() never be called.
With this case:
aplay -Dhw:0,0 -d 5 -r 48000 -f S24_LE -c 2 audio48k24b2c.wav
the required bitclk is 48000 * 24 * 2 = 2304000, bitclk got from
wm8960_configure_sysclk is 3072000, but if go to wm8960_configure_pll.
it can get correct bitclk 2304000.
So bitclk relax condition should be removed in wm8960_configure_sysclk,
then wm8960_configure_pll can be called, and there is also bitclk relax
function in wm8960_configure_pll.
Fixes: 3c01b9ee2ab9 ("ASoC: codec: wm8960: Relax bit clock computation")
Signed-off-by: Shengjiu Wang <shengjiu.wang@nxp.com>
Signed-off-by: Daniel Baluta <daniel.baluta@nxp.com>
Acked-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Link: https://lore.kernel.org/r/1614740862-30196-1-git-send-email-shengjiu.wang@nxp.com
Signed-off-by: Mark Brown <broonie@kernel.org>
| -rw-r--r-- | sound/soc/codecs/wm8960.c | 12 |
1 files changed, 1 insertions, 11 deletions
diff --git a/sound/soc/codecs/wm8960.c b/sound/soc/codecs/wm8960.c index df351519a3a6..847ca16b9841 100644 --- a/sound/soc/codecs/wm8960.c +++ b/sound/soc/codecs/wm8960.c @@ -608,10 +608,6 @@ static const int bclk_divs[] = { * - lrclk = sysclk / dac_divs * - 10 * bclk = sysclk / bclk_divs * - * If we cannot find an exact match for (sysclk, lrclk, bclk) - * triplet, we relax the bclk such that bclk is chosen as the - * closest available frequency greater than expected bclk. - * * @wm8960: codec private data * @mclk: MCLK used to derive sysclk * @sysclk_idx: sysclk_divs index for found sysclk @@ -629,7 +625,7 @@ int wm8960_configure_sysclk(struct wm8960_priv *wm8960, int mclk, { int sysclk, bclk, lrclk; int i, j, k; - int diff, closest = mclk; + int diff; /* marker for no match */ *bclk_idx = -1; @@ -653,12 +649,6 @@ int wm8960_configure_sysclk(struct wm8960_priv *wm8960, int mclk, *bclk_idx = k; break; } - if (diff > 0 && closest > diff) { - *sysclk_idx = i; - *dac_idx = j; - *bclk_idx = k; - closest = diff; - } } if (k != ARRAY_SIZE(bclk_divs)) break; |