forked from Minki/linux
ASoC: sgtl5000: Allow 8kHz playback in codec slave mode
When trying to play a 8kHz file with codec in slave mode we get the following error on a mx28evk: $ aplay -Dhw:0,0 stereo_8k.wav Playing WAVE 'stereo_8k.wav' : Signed 16 bit Little Endian, Rate 8000 Hz, Stereo [ 21.218647] sgtl5000 0-000a: PLL not supported in slave mode [ 21.224559] sgtl5000 0-000a: 128 ratio is not supported. SYS_MCLK needs to be 256, 384 or 512 * fs [ 21.233687] sgtl5000 0-000a: ASoC: can't set sgtl5000 hw params: -22 aplay: set_params:1123: Unable to install hw params: This error happens because we are using 'sys_fs' instead of 'frame_rate' in the valid ratio check. Use the real'frame_rate' so that the ratio is correctly calculated and the playback can run. sgtl5000 codec manual states that in 'Synchronous SYS_MCLK input' mode that the following SYS_CLK frequencies are allowed: 256*fs, 384*fs, 512*fs. , where fs is the sampling frequency, which can be in the range of: 8, 11.025, 16, 22.5, 32, 44.1, 48, 96 kHz. Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com> Signed-off-by: Mark Brown <broonie@kernel.org>
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@ -618,7 +618,7 @@ static int sgtl5000_set_clock(struct snd_soc_codec *codec, int frame_rate)
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* factor of freq = 96 kHz can only be 256, since mclk is in the range
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* of 8 MHz - 27 MHz
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*/
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switch (sgtl5000->sysclk / sys_fs) {
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switch (sgtl5000->sysclk / frame_rate) {
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case 256:
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clk_ctl |= SGTL5000_MCLK_FREQ_256FS <<
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SGTL5000_MCLK_FREQ_SHIFT;
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@ -641,7 +641,7 @@ static int sgtl5000_set_clock(struct snd_soc_codec *codec, int frame_rate)
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"PLL not supported in slave mode\n");
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dev_err(codec->dev, "%d ratio is not supported. "
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"SYS_MCLK needs to be 256, 384 or 512 * fs\n",
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sgtl5000->sysclk / sys_fs);
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sgtl5000->sysclk / frame_rate);
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return -EINVAL;
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}
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}
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