[alsa-devel] [PATCH] ASoC: nau8825: automatic BCLK and LRC divde in master mode
configurable LRC and BCLK divide. The driver will make configurations of LRC and BCLK automatically according to BCLK and FS information in master mode.
Signed-off-by: John Hsu KCHSU0@nuvoton.com --- sound/soc/codecs/nau8825.c | 20 +++++++++++++++++++- 1 file changed, 19 insertions(+), 1 deletion(-)
diff --git a/sound/soc/codecs/nau8825.c b/sound/soc/codecs/nau8825.c index 4576f98..97fbeba 100644 --- a/sound/soc/codecs/nau8825.c +++ b/sound/soc/codecs/nau8825.c @@ -1231,7 +1231,7 @@ static int nau8825_hw_params(struct snd_pcm_substream *substream, { struct snd_soc_codec *codec = dai->codec; struct nau8825 *nau8825 = snd_soc_codec_get_drvdata(codec); - unsigned int val_len = 0, osr; + unsigned int val_len = 0, osr, ctrl_val, bclk_fs, bclk_div;
nau8825_sema_acquire(nau8825, 3 * HZ);
@@ -1261,6 +1261,24 @@ static int nau8825_hw_params(struct snd_pcm_substream *substream, osr_adc_sel[osr].clk_src << NAU8825_CLK_ADC_SRC_SFT); }
+ /* make BCLK and LRC divde configuration if the codec as master. */ + regmap_read(nau8825->regmap, NAU8825_REG_I2S_PCM_CTRL2, &ctrl_val); + if (ctrl_val & NAU8825_I2S_MS_MASTER) { + /* get the bclk and fs ratio */ + bclk_fs = snd_soc_params_to_bclk(params) / params_rate(params); + if (bclk_fs <= 32) + bclk_div = 2; + else if (bclk_fs <= 64) + bclk_div = 1; + else if (bclk_fs <= 128) + bclk_div = 0; + else + return -EINVAL; + regmap_update_bits(nau8825->regmap, NAU8825_REG_I2S_PCM_CTRL2, + NAU8825_I2S_LRC_DIV_MASK | NAU8825_I2S_BLK_DIV_MASK, + ((bclk_div + 1) << NAU8825_I2S_LRC_DIV_SFT) | bclk_div); + } + switch (params_width(params)) { case 16: val_len |= NAU8825_I2S_DL_16; -- 2.6.4 .
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On Fri, Feb 17, 2017 at 09:55:33AM +0800, John Hsu wrote:
configurable LRC and BCLK divide. The driver will make configurations of LRC and BCLK automatically according to BCLK and FS information in master mode.
unsigned int val_len = 0, osr;
unsigned int val_len = 0, osr, ctrl_val, bclk_fs, bclk_div;
This is still broken, the above has tabs replaced by spaces. I think I'll try to fix up by hand but it's going to be fiddly and that's a one time thing...
On Fri, Feb 17, 2017 at 10:40:47AM +0000, Mark Brown wrote:
This is still broken, the above has tabs replaced by spaces. I think I'll try to fix up by hand but it's going to be fiddly and that's a one time thing...
OK, that worked - it's definitely a tab/space problem. Please investigate this and try to get it fixed though, I'm not doing that for every patch you send. It may be something to do with what happens when it leaves your company mail system and looks fine internally?
Hi, On 2/17/2017 6:43 PM, Mark Brown wrote:
On Fri, Feb 17, 2017 at 10:40:47AM +0000, Mark Brown wrote:
This is still broken, the above has tabs replaced by spaces. I think I'll try to fix up by hand but it's going to be fiddly and that's a one time thing...
OK, that worked - it's definitely a tab/space problem. Please investigate this and try to get it fixed though, I'm not doing that for every patch you send. It may be something to do with what happens when it leaves your company mail system and looks fine internally?
Thank you very much for help. I'll investigate what's the problem. May I ask you more information? I need to know how to produce the tab/space conversion issue. Do you save the patch mail to text file with patch sub file name? Then type the "git am <" command to apply the patch. I can't reproduce the issue in my ubuntu linux with the patch mail sent by me.
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On Mon, Feb 20, 2017 at 10:32:18AM +0800, John Hsu wrote:
Thank you very much for help. I'll investigate what's the problem. May I ask you more information? I need to know how to produce the tab/space conversion issue. Do you save the patch mail to text file with patch sub file name? Then type the "git am <" command to apply the patch. I can't reproduce the issue in my ubuntu linux with the patch mail sent by me.
I save to a mailbox then use git am --signoff on the mailbox. I can see the problem in my mail client directly as well, for example by editing or replying to your e-mail. Perhaps check a copy that's been through the mailing list or sent to an external account rather than just one sent locally? It might be getting changed when it goes to a different mail server.
Hi, On 2/21/2017 2:26 AM, Mark Brown wrote:
On Mon, Feb 20, 2017 at 10:32:18AM +0800, John Hsu wrote:
Thank you very much for help. I'll investigate what's the problem. May I ask you more information? I need to know how to produce the tab/space conversion issue. Do you save the patch mail to text file with patch sub file name? Then type the "git am <" command to apply the patch. I can't reproduce the issue in my ubuntu linux with the patch mail sent by me.
I save to a mailbox then use git am --signoff on the mailbox. I can see the problem in my mail client directly as well, for example by editing or replying to your e-mail. Perhaps check a copy that's been through the mailing list or sent to an external account rather than just one sent locally? It might be getting changed when it goes to a different mail server.
I get it. Thank you very much for the information.
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John Hsu -
Mark Brown