[alsa-devel] adau1701: Different sample rates need different firmwares
Hey Lars,
I'm having an issue with the adau1701 codec. There is this line which checks, if the mclk/lrclk ratio has changed and whether it is necessary to reset the codec and upload a new firmware.
http://lxr.free-electrons.com/source/sound/soc/codecs/adau1701.c#L444
But if we change mclk in the machine driver (for example to playback 44.1), this ration might not change, but still we have to upload a new firmware, so shouldn't we probably be checking for sample rate changes instead:
if (adau1701->current_rate != params_rate(params) { adau1701->current_rate = params_rate(params); ret = adau1701_reset(codec, clkdiv, params_rate(params)); if (ret < 0) return ret; }
Or did I miss something?
regards pascal
On 03/17/2016 11:51 AM, Pascal Huerst wrote:
Hey Lars,
I'm having an issue with the adau1701 codec. There is this line which checks, if the mclk/lrclk ratio has changed and whether it is necessary to reset the codec and upload a new firmware.
http://lxr.free-electrons.com/source/sound/soc/codecs/adau1701.c#L444
But if we change mclk in the machine driver (for example to playback 44.1), this ration might not change, but still we have to upload a new firmware, so shouldn't we probably be checking for sample rate changes instead:
if (adau1701->current_rate != params_rate(params) { adau1701->current_rate = params_rate(params); ret = adau1701_reset(codec, clkdiv, params_rate(params)); if (ret < 0) return ret; }
Or did I miss something?
Sounds good!
- Lars
participants (2)
-
Lars-Peter Clausen
-
Pascal Huerst