--- Begin Message ---
- To: alsa-devel@xxxxxxxxxxxxxxxx, devicetree@xxxxxxxxxxxxxxx, linux-kernel@xxxxxxxxxxxxxxx, lgirdwood@xxxxxxxxx, broonie@xxxxxxxxxx
- Subject: [PATCH 6/9] ASoC: ssm2602: Add support for CLKDIV2
- From: Paweł Anikiel <pan@xxxxxxxxxxxx>
- Date: Fri, 14 Apr 2023 16:02:00 +0200
- Cc: tiwai@xxxxxxxx, robh+dt@xxxxxxxxxx, krzysztof.kozlowski+dt@xxxxxxxxxx, dinguyen@xxxxxxxxxx, lars@xxxxxxxxxx, nuno.sa@xxxxxxxxxx, upstream@xxxxxxxxxxxx, Paweł Anikiel <pan@xxxxxxxxxxxx>
- In-reply-to: <20230414140203.707729-1-pan@semihalf.com>
- References: <20230414140203.707729-1-pan@semihalf.com>
The SSM260x chips have an internal MCLK /2 divider (bit D7 in register R8). Add logic that allows for more MCLK values using this divider. Signed-off-by: Paweł Anikiel <pan@xxxxxxxxxxxx> --- sound/soc/codecs/ssm2602.c | 15 ++++++++++++--- 1 file changed, 12 insertions(+), 3 deletions(-) diff --git a/sound/soc/codecs/ssm2602.c b/sound/soc/codecs/ssm2602.c index 021e0c860fa1..35c4743e756e 100644 --- a/sound/soc/codecs/ssm2602.c +++ b/sound/soc/codecs/ssm2602.c @@ -280,9 +280,12 @@ static inline int ssm2602_get_coeff(int mclk, int rate) int i; for (i = 0; i < ARRAY_SIZE(ssm2602_coeff_table); i++) { - if (ssm2602_coeff_table[i].rate == rate && - ssm2602_coeff_table[i].mclk == mclk) - return ssm2602_coeff_table[i].srate; + if (ssm2602_coeff_table[i].rate == rate) { + if (ssm2602_coeff_table[i].mclk == mclk) + return ssm2602_coeff_table[i].srate; + if (ssm2602_coeff_table[i].mclk == mclk / 2) + return ssm2602_coeff_table[i].srate | SRATE_CORECLK_DIV2; + } } return -EINVAL; } @@ -365,18 +368,24 @@ static int ssm2602_set_dai_sysclk(struct snd_soc_dai *codec_dai, switch (freq) { case 12288000: case 18432000: + case 24576000: + case 36864000: ssm2602->sysclk_constraints = &ssm2602_constraints_12288000; break; case 11289600: case 16934400: + case 22579200: + case 33868800: ssm2602->sysclk_constraints = &ssm2602_constraints_11289600; break; case 12000000: + case 24000000: ssm2602->sysclk_constraints = NULL; break; default: return -EINVAL; } + ssm2602->sysclk = freq; } else { unsigned int mask; -- 2.40.0.634.g4ca3ef3211-goog
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