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authorKuninori Morimoto <kuninori.morimoto.gx@renesas.com>2016-06-09 06:21:37 +0300
committerMark Brown <broonie@kernel.org>2016-06-09 13:40:43 +0300
commit7dc20319660d12d2ef642e572e8802c228b6c1cd (patch)
treed7aba6dc95e617205ce5d05c444222a0e0caa76c /sound/soc/sh/rcar/adg.c
parent52fd98bcaf22052fc8946d36b13d5e646b7b41b0 (diff)
downloadlinux-7dc20319660d12d2ef642e572e8802c228b6c1cd.tar.xz
ASoC: rsnd: adg :: AUDIO-CLKOUTn asynchronizes support
AUDIO-CLKOUTn can asynchronizes with L/R clock. AUDIO-CLKOUTn synchronizes with L/R clock is now default behavior. Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'sound/soc/sh/rcar/adg.c')
-rw-r--r--sound/soc/sh/rcar/adg.c18
1 files changed, 18 insertions, 0 deletions
diff --git a/sound/soc/sh/rcar/adg.c b/sound/soc/sh/rcar/adg.c
index 49354d17ea55..7d3e0e46d64a 100644
--- a/sound/soc/sh/rcar/adg.c
+++ b/sound/soc/sh/rcar/adg.c
@@ -33,11 +33,15 @@ struct rsnd_adg {
struct clk *clkout[CLKOUTMAX];
struct clk_onecell_data onecell;
struct rsnd_mod mod;
+ u32 flags;
int rbga_rate_for_441khz; /* RBGA */
int rbgb_rate_for_48khz; /* RBGB */
};
+#define LRCLK_ASYNC (1 << 0)
+#define adg_mode_flags(adg) (adg->flags)
+
#define for_each_rsnd_clk(pos, adg, i) \
for (i = 0; \
(i < CLKMAX) && \
@@ -355,6 +359,16 @@ found_clock:
rsnd_adg_set_ssi_clk(ssi_mod, data);
+ if (!(adg_mode_flags(adg) & LRCLK_ASYNC)) {
+ struct rsnd_mod *adg_mod = rsnd_mod_get(adg);
+ u32 ckr = 0;
+
+ if (0 == (rate % 8000))
+ ckr = 0x80000000;
+
+ rsnd_mod_bset(adg_mod, SSICKR, 0x80000000, ckr);
+ }
+
dev_dbg(dev, "ADG: %s[%d] selects 0x%x for %d\n",
rsnd_mod_name(ssi_mod), rsnd_mod_id(ssi_mod),
data, rate);
@@ -532,6 +546,7 @@ int rsnd_adg_probe(struct rsnd_priv *priv)
{
struct rsnd_adg *adg;
struct device *dev = rsnd_priv_to_dev(priv);
+ struct device_node *np = dev->of_node;
adg = devm_kzalloc(dev, sizeof(*adg), GFP_KERNEL);
if (!adg) {
@@ -545,6 +560,9 @@ int rsnd_adg_probe(struct rsnd_priv *priv)
rsnd_adg_get_clkin(priv, adg);
rsnd_adg_get_clkout(priv, adg);
+ if (of_get_property(np, "clkout-lr-asynchronous", NULL))
+ adg->flags = LRCLK_ASYNC;
+
priv->adg = adg;
return 0;