diff options
| author | Sergej Sawazki <sergej@taudac.com> | 2019-02-10 16:29:29 +0100 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2019-02-11 16:05:56 +0000 |
| commit | e9418629e2fcf7374c19750f3afa7f3a7ff0afa2 (patch) | |
| tree | ee5225594942287b92e44f3fd11811bc965a5815 /sound/soc/codecs | |
| parent | 36b1599340b5bbaf4d4f015cbfe89b7bc8cd7873 (diff) | |
ASoC: wm8741: Set OSR mode in hw_params()
For correct operation of the digital filtering and other processing on the
WM8741, the user must ensure the correct value of OSR[1:0] is set at all
times.[1] Hence, depending the selected sampling rate, set the OSR (over-
sampling rate) mode in hw_params().
References:
[1] "WM8741 Data Sheet"
Signed-off-by: Sergej Sawazki <sergej@taudac.com>
Acked-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'sound/soc/codecs')
| -rw-r--r-- | sound/soc/codecs/wm8741.c | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/sound/soc/codecs/wm8741.c b/sound/soc/codecs/wm8741.c index fdda83b7ca82..a4b8c459ea57 100644 --- a/sound/soc/codecs/wm8741.c +++ b/sound/soc/codecs/wm8741.c @@ -196,7 +196,7 @@ static int wm8741_hw_params(struct snd_pcm_substream *substream, { struct snd_soc_component *component = dai->component; struct wm8741_priv *wm8741 = snd_soc_component_get_drvdata(component); - unsigned int iface; + unsigned int iface, mode; int i; /* The set of sample rates that can be supported depends on the @@ -240,11 +240,21 @@ static int wm8741_hw_params(struct snd_pcm_substream *substream, return -EINVAL; } + /* oversampling rate */ + if (params_rate(params) > 96000) + mode = 0x40; + else if (params_rate(params) > 48000) + mode = 0x20; + else + mode = 0x00; + dev_dbg(component->dev, "wm8741_hw_params: bit size param = %d, rate param = %d", params_width(params), params_rate(params)); snd_soc_component_update_bits(component, WM8741_FORMAT_CONTROL, WM8741_IWL_MASK, iface); + snd_soc_component_update_bits(component, WM8741_MODE_CONTROL_1, WM8741_OSR_MASK, + mode); return 0; } |