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authorMark Brown <broonie@opensource.wolfsonmicro.com>2009-08-26 14:14:51 +0100
committerMark Brown <broonie@opensource.wolfsonmicro.com>2009-08-26 15:27:57 +0100
commitf1e887de2d24d50286709912ddc4a91ead21ff81 (patch)
tree7e5c758c7de4f3d9f95e7b00937e4b317a7fcff9 /sound/soc
parent5dc0748182037e3fea35a96d615a3c2610b8e4b0 (diff)
ASoC: Don't reconfigure WM8350 FLL if not needed
If the requested FLL configuration is the one we're currently running in it's at best pointless to reconfigure the FLL. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Diffstat (limited to 'sound/soc')
-rw-r--r--sound/soc/codecs/wm8350.c9
1 files changed, 9 insertions, 0 deletions
diff --git a/sound/soc/codecs/wm8350.c b/sound/soc/codecs/wm8350.c
index 4ded0e3a35e0..71c9c4bb2632 100644
--- a/sound/soc/codecs/wm8350.c
+++ b/sound/soc/codecs/wm8350.c
@@ -63,6 +63,8 @@ struct wm8350_data {
struct wm8350_jack_data hpl;
struct wm8350_jack_data hpr;
struct regulator_bulk_data supplies[ARRAY_SIZE(supply_names)];
+ int fll_freq_out;
+ int fll_freq_in;
};
static unsigned int wm8350_codec_cache_read(struct snd_soc_codec *codec,
@@ -1104,10 +1106,14 @@ static int wm8350_set_fll(struct snd_soc_dai *codec_dai,
{
struct snd_soc_codec *codec = codec_dai->codec;
struct wm8350 *wm8350 = codec->control_data;
+ struct wm8350_data *priv = codec->private_data;
struct _fll_div fll_div;
int ret = 0;
u16 fll_1, fll_4;
+ if (freq_in == priv->fll_freq_in && freq_out == priv->fll_freq_out)
+ return 0;
+
/* power down FLL - we need to do this for reconfiguration */
wm8350_clear_bits(wm8350, WM8350_POWER_MGMT_4,
WM8350_FLL_ENA | WM8350_FLL_OSC_ENA);
@@ -1142,6 +1148,9 @@ static int wm8350_set_fll(struct snd_soc_dai *codec_dai,
wm8350_set_bits(wm8350, WM8350_POWER_MGMT_4, WM8350_FLL_OSC_ENA);
wm8350_set_bits(wm8350, WM8350_POWER_MGMT_4, WM8350_FLL_ENA);
+ priv->fll_freq_out = freq_out;
+ priv->fll_freq_in = freq_in;
+
return 0;
}