From b272efc8600a7bbf2dd91d0eba8a3b8949e84497 Mon Sep 17 00:00:00 2001 From: Mark Brown Date: Wed, 10 Oct 2012 15:10:08 +0900 Subject: [PATCH] ASoC: arizona: Factor out rate selection code In preparation for more advanced sample rate managment move the existing code out of the main hw_params() function. Signed-off-by: Mark Brown --- sound/soc/codecs/arizona.c | 89 +++++++++++++++++++++++--------------- 1 file changed, 53 insertions(+), 36 deletions(-) diff --git a/sound/soc/codecs/arizona.c b/sound/soc/codecs/arizona.c index 5afc8110ae3a..6d98cf41f727 100644 --- a/sound/soc/codecs/arizona.c +++ b/sound/soc/codecs/arizona.c @@ -702,17 +702,63 @@ static int arizona_startup(struct snd_pcm_substream *substream, constraint); } +static int arizona_hw_params_rate(struct snd_pcm_substream *substream, + struct snd_pcm_hw_params *params, + struct snd_soc_dai *dai) +{ + struct snd_soc_codec *codec = dai->codec; + struct arizona_priv *priv = snd_soc_codec_get_drvdata(codec); + struct arizona_dai_priv *dai_priv = &priv->dai[dai->id - 1]; + int base = dai->driver->base; + int i, sr_val; + + /* + * We will need to be more flexible than this in future, + * currently we use a single sample rate for SYSCLK. + */ + for (i = 0; i < ARRAY_SIZE(arizona_sr_vals); i++) + if (arizona_sr_vals[i] == params_rate(params)) + break; + if (i == ARRAY_SIZE(arizona_sr_vals)) { + arizona_aif_err(dai, "Unsupported sample rate %dHz\n", + params_rate(params)); + return -EINVAL; + } + sr_val = i; + + switch (dai_priv->clk) { + case ARIZONA_CLK_SYSCLK: + snd_soc_update_bits(codec, ARIZONA_SAMPLE_RATE_1, + ARIZONA_SAMPLE_RATE_1_MASK, sr_val); + if (base) + snd_soc_update_bits(codec, base + ARIZONA_AIF_RATE_CTRL, + ARIZONA_AIF1_RATE_MASK, 0); + break; + case ARIZONA_CLK_ASYNCCLK: + snd_soc_update_bits(codec, ARIZONA_ASYNC_SAMPLE_RATE_1, + ARIZONA_ASYNC_SAMPLE_RATE_MASK, sr_val); + if (base) + snd_soc_update_bits(codec, base + ARIZONA_AIF_RATE_CTRL, + ARIZONA_AIF1_RATE_MASK, + 8 << ARIZONA_AIF1_RATE_SHIFT); + break; + default: + arizona_aif_err(dai, "Invalid clock %d\n", dai_priv->clk); + return -EINVAL; + } + + return 0; +} + static int arizona_hw_params(struct snd_pcm_substream *substream, struct snd_pcm_hw_params *params, struct snd_soc_dai *dai) { struct snd_soc_codec *codec = dai->codec; - struct arizona_priv *priv = snd_soc_codec_get_drvdata(codec); - struct arizona_dai_priv *dai_priv = &priv->dai[dai->id - 1]; int base = dai->driver->base; const int *rates; - int i; - int bclk, lrclk, wl, frame, sr_val; + int i, ret; + int bclk, lrclk, wl, frame; if (params_rate(params) % 8000) rates = &arizona_44k1_bclk_rates[0]; @@ -732,16 +778,6 @@ static int arizona_hw_params(struct snd_pcm_substream *substream, return -EINVAL; } - for (i = 0; i < ARRAY_SIZE(arizona_sr_vals); i++) - if (arizona_sr_vals[i] == params_rate(params)) - break; - if (i == ARRAY_SIZE(arizona_sr_vals)) { - arizona_aif_err(dai, "Unsupported sample rate %dHz\n", - params_rate(params)); - return -EINVAL; - } - sr_val = i; - lrclk = snd_soc_params_to_bclk(params) / params_rate(params); arizona_aif_dbg(dai, "BCLK %dHz LRCLK %dHz\n", @@ -750,28 +786,9 @@ static int arizona_hw_params(struct snd_pcm_substream *substream, wl = snd_pcm_format_width(params_format(params)); frame = wl << ARIZONA_AIF1TX_WL_SHIFT | wl; - /* - * We will need to be more flexible than this in future, - * currently we use a single sample rate for SYSCLK. - */ - switch (dai_priv->clk) { - case ARIZONA_CLK_SYSCLK: - snd_soc_update_bits(codec, ARIZONA_SAMPLE_RATE_1, - ARIZONA_SAMPLE_RATE_1_MASK, sr_val); - snd_soc_update_bits(codec, base + ARIZONA_AIF_RATE_CTRL, - ARIZONA_AIF1_RATE_MASK, 0); - break; - case ARIZONA_CLK_ASYNCCLK: - snd_soc_update_bits(codec, ARIZONA_ASYNC_SAMPLE_RATE_1, - ARIZONA_ASYNC_SAMPLE_RATE_MASK, sr_val); - snd_soc_update_bits(codec, base + ARIZONA_AIF_RATE_CTRL, - ARIZONA_AIF1_RATE_MASK, - 8 << ARIZONA_AIF1_RATE_SHIFT); - break; - default: - arizona_aif_err(dai, "Invalid clock %d\n", dai_priv->clk); - return -EINVAL; - } + ret = arizona_hw_params_rate(substream, params, dai); + if (ret != 0) + return ret; snd_soc_update_bits(codec, base + ARIZONA_AIF_BCLK_CTRL, ARIZONA_AIF1_BCLK_FREQ_MASK, bclk); -- 2.34.1