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sound: resove external loopback for 2ch pdm + 2ch loopback on axg

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PD#160814: sound: resove external loopback for 2ch pdm + 2ch loopback

Change-Id: I7a558dcc3850d4d174faa3c9259394b78bf8f45b
Signed-off-by: Peipeng Zhao <peipeng.zhao@amlogic.com>
This commit is contained in:
Peipeng Zhao
2018-02-11 15:07:19 +08:00
parent 6d2bf52480
commit e4341e80c1
1 changed files with 8 additions and 1 deletions
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9
sound/soc/amlogic/auge/audio_utils.c
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@@ -1023,11 +1023,18 @@ int loopback_hw_params(struct snd_pcm_substream *substream,
/*for i2s mode*/
unsigned int sclk_div = 4 - 1;
unsigned int ratio = params_channels(params) * bit_depth - 1;
unsigned int fsclk_hi = ratio / 2;
unsigned int fsclk_hi;
unsigned int clk_id = lb_cfg->datalb_src - 3;
unsigned int mul = 2;
unsigned int mpll_freq, offset, reg;
/*lrclk sclk depend on default 8ch setting,*/
/* so if num of channels is 4, to change ratio*/
if (params_channels(params) == 4)
ratio = ratio*2;
fsclk_hi = ratio/2;
pr_info("%s, channels:%d, format:%d, ratio:%d\n",
__func__,
params_channels(params),