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authorKuninori Morimoto <kuninori.morimoto.gx@renesas.com>2018-10-12 06:31:49 +0000
committerMark Brown <broonie@kernel.org>2018-10-12 18:52:08 +0200
commit471a7ba89158c6d52dae69636c94c4aa1a6b7b22 (patch)
tree0f9aec9ae11063416ecd4ed98159466b8ec6de74 /sound
parent594680ea4a394f19d38a39a7d7c673fbad02a3d6 (diff)
downloadlinux-471a7ba89158c6d52dae69636c94c4aa1a6b7b22.tar.gz
ASoC: pcm3168a: add I2S/Left_J TDM support
pcm3168a is supporting TDM on I2S/Left_J, but there is no settings for it. This patch add it. Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'sound')
-rw-r--r--sound/soc/codecs/pcm3168a.c19
1 files changed, 19 insertions, 0 deletions
diff --git a/sound/soc/codecs/pcm3168a.c b/sound/soc/codecs/pcm3168a.c
index f0e2b886323e..63aa02592bc0 100644
--- a/sound/soc/codecs/pcm3168a.c
+++ b/sound/soc/codecs/pcm3168a.c
@@ -33,6 +33,8 @@
#define PCM3168A_FMT_RIGHT_J_16 0x3
#define PCM3168A_FMT_DSP_A 0x4
#define PCM3168A_FMT_DSP_B 0x5
+#define PCM3168A_FMT_I2S_TDM 0x6
+#define PCM3168A_FMT_LEFT_J_TDM 0x7
#define PCM3168A_FMT_DSP_MASK 0x4
#define PCM3168A_NUM_SUPPLIES 6
@@ -401,9 +403,11 @@ static int pcm3168a_hw_params(struct snd_pcm_substream *substream,
bool tx, master_mode;
u32 val, mask, shift, reg;
unsigned int rate, fmt, ratio, max_ratio;
+ unsigned int chan;
int i, min_frame_size;
rate = params_rate(params);
+ chan = params_channels(params);
ratio = pcm3168a->sysclk / rate;
@@ -456,6 +460,21 @@ static int pcm3168a_hw_params(struct snd_pcm_substream *substream,
return -EINVAL;
}
+ /* for TDM */
+ if (chan > 2) {
+ switch (fmt) {
+ case PCM3168A_FMT_I2S:
+ fmt = PCM3168A_FMT_I2S_TDM;
+ break;
+ case PCM3168A_FMT_LEFT_J:
+ fmt = PCM3168A_FMT_LEFT_J_TDM;
+ break;
+ default:
+ dev_err(component->dev, "TDM is supported under I2S/Left_J only\n");
+ return -EINVAL;
+ }
+ }
+
if (master_mode)
val = ((i + 1) << shift);
else