hollalinux
/
linux-sg2042
mirror of https://github.com/sophgo/linux-riscv.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

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>
This commit is contained in:
Kuninori Morimoto 2016-06-09 03:21:37 +00:00 committed by Mark Brown
parent 52fd98bcaf
commit 7dc2031966
2 changed files with 20 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
Documentation/devicetree/bindings/sound/renesas,rsnd.txt
View File

@ -373,6 +373,8 @@ Optional properties:
- #clock-cells : it must be 0 if your system has audio_clkout
it must be 1 if your system has audio_clkout0/1/2/3
- clock-frequency : for all audio_clkout0/1/2/3
- clkout-lr-asynchronous : boolean property. it indicates that audio_clkoutn
is asynchronizes with lr-clock.
SSI subnode properties:
- interrupts : Should contain SSI interrupt for PIO transfer

18
sound/soc/sh/rcar/adg.c
View File

@ -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;