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author | Charles Keepax <ckeepax@opensource.wolfsonmicro.com> | 2013-02-20 17:28:40 +0000 |
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committer | Mark Brown <broonie@opensource.wolfsonmicro.com> | 2013-03-04 11:01:00 +0800 |
commit | ee929a9780605f21ad67a1ccb626baa41e038c1a (patch) | |
tree | 7f46c9218a20210e1fa8988d723af3c5ba90c0b2 /sound/soc/codecs/arizona.c | |
parent | de1e6eedddeab2fa417c38c231d896198f903129 (diff) | |
download | op-kernel-dev-ee929a9780605f21ad67a1ccb626baa41e038c1a.zip op-kernel-dev-ee929a9780605f21ad67a1ccb626baa41e038c1a.tar.gz |
ASoC: arizona: Add support for directly setting the FLL REFCLK
This patch allows the REFCLK to be set directly allowing much greater
flexibility in how the FLLs are configured.
Signed-off-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Diffstat (limited to 'sound/soc/codecs/arizona.c')
-rw-r--r-- | sound/soc/codecs/arizona.c | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/sound/soc/codecs/arizona.c b/sound/soc/codecs/arizona.c index 149e44f..2bebfae 100644 --- a/sound/soc/codecs/arizona.c +++ b/sound/soc/codecs/arizona.c @@ -1139,6 +1139,45 @@ static void arizona_disable_fll(struct arizona_fll *fll) pm_runtime_put_autosuspend(arizona->dev); } +int arizona_set_fll_refclk(struct arizona_fll *fll, int source, + unsigned int Fref, unsigned int Fout) +{ + struct arizona_fll_cfg ref, sync; + int ret; + + if (source < 0) + return -EINVAL; + + if (fll->ref_src == source && fll->ref_freq == Fref && + fll->fout == Fout) + return 0; + + if (Fout) { + ret = arizona_calc_fll(fll, &ref, Fref, Fout); + if (ret != 0) + return ret; + + if (fll->sync_src >= 0) { + ret = arizona_calc_fll(fll, &sync, fll->sync_freq, Fout); + if (ret != 0) + return ret; + } + } + + fll->ref_src = source; + fll->ref_freq = Fref; + fll->fout = Fout; + + if (Fout) { + arizona_enable_fll(fll, &ref, &sync); + } else { + arizona_disable_fll(fll); + } + + return 0; +} +EXPORT_SYMBOL_GPL(arizona_set_fll_refclk); + int arizona_set_fll(struct arizona_fll *fll, int source, unsigned int Fref, unsigned int Fout) { |