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| author | bui duc phuc <phucduc.bui@gmail.com> | 2026-06-09 14:38:35 +0300 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2026-06-10 02:33:52 +0300 |
| commit | 05e1ebfeb7264e31a463c11deca66b7d55f7024f (patch) | |
| tree | ac1a9e8b1188f731171784b3645e6377fbf2b3e6 | |
| parent | 39033b278f9c59d5913af89e5de3c3a0d2a9a89e (diff) | |
| download | linux-05e1ebfeb7264e31a463c11deca66b7d55f7024f.tar.xz | |
ASoC: renesas: fsi: add fsi_clk_prepare/unprepare()
Add fsi_clk_prepare() and fsi_clk_unprepare() helpers and call them
from fsi_dai_startup() and fsi_dai_shutdown().
This ensures clk_prepare() and clk_unprepare() are executed from
sleepable contexts and keeps clocks prepared only while audio streams
are active.
Acked-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Suggested-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: bui duc phuc <phucduc.bui@gmail.com>
Link: https://patch.msgid.link/20260609113836.45079-11-phucduc.bui@gmail.com
Signed-off-by: Mark Brown <broonie@kernel.org>
| -rw-r--r-- | sound/soc/renesas/fsi.c | 51 |
1 files changed, 50 insertions, 1 deletions
diff --git a/sound/soc/renesas/fsi.c b/sound/soc/renesas/fsi.c index 716ecf0401fe..e26f39dfe059 100644 --- a/sound/soc/renesas/fsi.c +++ b/sound/soc/renesas/fsi.c @@ -730,6 +730,54 @@ static int fsi_clk_is_valid(struct fsi_priv *fsi) fsi->clock.rate; } +static int fsi_clk_prepare(struct fsi_priv *fsi) +{ + struct fsi_clk *clock = &fsi->clock; + struct clk *spu = fsi->master->clk_spu; + struct clk *xck = clock->xck; + struct clk *ick = clock->ick; + struct clk *div = clock->div; + int ret; + + ret = clk_prepare(spu); + if (ret) + return ret; + ret = clk_prepare(xck); + if (ret) + goto err_spu; + ret = clk_prepare(ick); + if (ret) + goto err_xck; + ret = clk_prepare(div); + if (ret) + goto err_ick; + + return 0; + +err_ick: + clk_unprepare(ick); +err_xck: + clk_unprepare(xck); +err_spu: + clk_unprepare(spu); + + return ret; +} + +static void fsi_clk_unprepare(struct fsi_priv *fsi) +{ + struct fsi_clk *clock = &fsi->clock; + struct clk *spu = fsi->master->clk_spu; + struct clk *xck = clock->xck; + struct clk *ick = clock->ick; + struct clk *div = clock->div; + + clk_unprepare(div); + clk_unprepare(ick); + clk_unprepare(xck); + clk_unprepare(spu); +} + static int fsi_clk_enable(struct device *dev, struct fsi_priv *fsi) { @@ -1580,7 +1628,7 @@ static int fsi_dai_startup(struct snd_pcm_substream *substream, fsi_clk_invalid(fsi); - return 0; + return fsi_clk_prepare(fsi); } static void fsi_dai_shutdown(struct snd_pcm_substream *substream, @@ -1588,6 +1636,7 @@ static void fsi_dai_shutdown(struct snd_pcm_substream *substream, { struct fsi_priv *fsi = fsi_get_priv(substream); + fsi_clk_unprepare(fsi); fsi_clk_invalid(fsi); } |