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authorMark Brown <broonie@opensource.wolfsonmicro.com>2011-03-07 20:58:11 +0000
committerMark Brown <broonie@opensource.wolfsonmicro.com>2011-03-08 18:56:16 +0000
commitec4ee52a8f5fb5b8e235ae9f02589d60d54740cc (patch)
tree329a7b4031c899b67f86a28b1ae77f295f3bfbec /sound
parentb993f92b99288d4b3a1a1237f3e40fa6460e4b47 (diff)
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ASoC: Provide CODEC clocking operations and API calls
When multi component systems use DAIless amplifiers which require clocking configuration it is at best hard to use the current clocking API as this requires a DAI even though the device may not even have one. Address this by adding set_sysclk() and set_pll() operations and APIs for CODECs. In order to avoid issues with devices which could be used either with or without DAIs make the DAI variants call through to their CODEC counterparts if there is no DAI specific operation. Converting over entirely would create problems for multi-DAI devices which offer per-DAI clocking setup. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Acked-by: Liam Girdwood <lrg@ti.com>
Diffstat (limited to 'sound')
-rw-r--r--sound/soc/soc-core.c46
1 files changed, 46 insertions, 0 deletions
diff --git a/sound/soc/soc-core.c b/sound/soc/soc-core.c
index c12f2bd23a4..c2ec6cb0563 100644
--- a/sound/soc/soc-core.c
+++ b/sound/soc/soc-core.c
@@ -3064,12 +3064,34 @@ int snd_soc_dai_set_sysclk(struct snd_soc_dai *dai, int clk_id,
{
if (dai->driver && dai->driver->ops->set_sysclk)
return dai->driver->ops->set_sysclk(dai, clk_id, freq, dir);
+ else if (dai->codec && dai->codec->driver->set_sysclk)
+ return dai->codec->driver->set_sysclk(dai->codec, clk_id,
+ freq, dir);
else
return -EINVAL;
}
EXPORT_SYMBOL_GPL(snd_soc_dai_set_sysclk);
/**
+ * snd_soc_codec_set_sysclk - configure CODEC system or master clock.
+ * @codec: CODEC
+ * @clk_id: DAI specific clock ID
+ * @freq: new clock frequency in Hz
+ * @dir: new clock direction - input/output.
+ *
+ * Configures the CODEC master (MCLK) or system (SYSCLK) clocking.
+ */
+int snd_soc_codec_set_sysclk(struct snd_soc_codec *codec, int clk_id,
+ unsigned int freq, int dir)
+{
+ if (codec->driver->set_sysclk)
+ return codec->driver->set_sysclk(codec, clk_id, freq, dir);
+ else
+ return -EINVAL;
+}
+EXPORT_SYMBOL_GPL(snd_soc_codec_set_sysclk);
+
+/**
* snd_soc_dai_set_clkdiv - configure DAI clock dividers.
* @dai: DAI
* @div_id: DAI specific clock divider ID
@@ -3105,11 +3127,35 @@ int snd_soc_dai_set_pll(struct snd_soc_dai *dai, int pll_id, int source,
if (dai->driver && dai->driver->ops->set_pll)
return dai->driver->ops->set_pll(dai, pll_id, source,
freq_in, freq_out);
+ else if (dai->codec && dai->codec->driver->set_pll)
+ return dai->codec->driver->set_pll(dai->codec, pll_id, source,
+ freq_in, freq_out);
else
return -EINVAL;
}
EXPORT_SYMBOL_GPL(snd_soc_dai_set_pll);
+/*
+ * snd_soc_codec_set_pll - configure codec PLL.
+ * @codec: CODEC
+ * @pll_id: DAI specific PLL ID
+ * @source: DAI specific source for the PLL
+ * @freq_in: PLL input clock frequency in Hz
+ * @freq_out: requested PLL output clock frequency in Hz
+ *
+ * Configures and enables PLL to generate output clock based on input clock.
+ */
+int snd_soc_codec_set_pll(struct snd_soc_codec *codec, int pll_id, int source,
+ unsigned int freq_in, unsigned int freq_out)
+{
+ if (codec->driver->set_pll)
+ return codec->driver->set_pll(codec, pll_id, source,
+ freq_in, freq_out);
+ else
+ return -EINVAL;
+}
+EXPORT_SYMBOL_GPL(snd_soc_codec_set_pll);
+
/**
* snd_soc_dai_set_fmt - configure DAI hardware audio format.
* @dai: DAI