ASoC: ssm2602: add 16kHz sampling rate support

SSM260x also supports 16kHz with external master clocks of 12.000MHz,
12.288MHz and 18.432MHz.
Add matching coefficients, update constraints and announced rates.

Signed-off-by: Andreas Pretzsch <apr@cn-eng.de>
Acked-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Mark Brown <broonie@linaro.org>

diff --git a/sound/soc/codecs/ssm2602.c b/sound/soc/codecs/ssm2602.c
index c6dd48561884036c857c445034c3052a04b43a27..af76bbd1b24fbde13e686618c9ab2409a8e18624 100644 (file)
--- a/sound/soc/codecs/ssm2602.c
+++ b/sound/soc/codecs/ssm2602.c
@@ -194,7 +194,7 @@ static const struct snd_soc_dapm_route ssm2604_routes[] = {
 };
 
 static const unsigned int ssm2602_rates_12288000[] = {
-       8000, 32000, 48000, 96000,
+       8000, 16000, 32000, 48000, 96000,
 };
 
 static struct snd_pcm_hw_constraint_list ssm2602_constraints_12288000 = {
@@ -231,6 +231,11 @@ static const struct ssm2602_coeff ssm2602_coeff_table[] = {
        {18432000, 32000, SSM2602_COEFF_SRATE(0x6, 0x1, 0x0)},
        {12000000, 32000, SSM2602_COEFF_SRATE(0x6, 0x0, 0x1)},
 
+       /* 16k */
+       {12288000, 16000, SSM2602_COEFF_SRATE(0x5, 0x0, 0x0)},
+       {18432000, 16000, SSM2602_COEFF_SRATE(0x5, 0x1, 0x0)},
+       {12000000, 16000, SSM2602_COEFF_SRATE(0xa, 0x0, 0x1)},
+
        /* 8k */
        {12288000, 8000, SSM2602_COEFF_SRATE(0x3, 0x0, 0x0)},
        {18432000, 8000, SSM2602_COEFF_SRATE(0x3, 0x1, 0x0)},
@@ -473,9 +478,10 @@ static int ssm2602_set_bias_level(struct snd_soc_codec *codec,
        return 0;
 }
 
-#define SSM2602_RATES (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_32000 |\
-               SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000 |\
-               SNDRV_PCM_RATE_88200 | SNDRV_PCM_RATE_96000)
+#define SSM2602_RATES (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_16000 |\
+               SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 |\
+               SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_88200 |\
+               SNDRV_PCM_RATE_96000)
 
 #define SSM2602_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\
                SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S32_LE)