diff --git a/sound/soc/sh/rcar/ssi.c b/sound/soc/sh/rcar/ssi.c index 46feddd78ee2..c5d5c64152e9 100644 --- a/sound/soc/sh/rcar/ssi.c +++ b/sound/soc/sh/rcar/ssi.c @@ -72,6 +72,7 @@ struct rsnd_ssi { u32 cr_own; u32 cr_clk; u32 cr_mode; + u32 cr_en; u32 wsr; int chan; int rate; @@ -291,6 +292,16 @@ static int rsnd_ssi_master_clk_start(struct rsnd_mod *mod, if (ret < 0) return ret; + /* + * SSI clock will be output contiguously + * by below settings. + * This means, rsnd_ssi_master_clk_start() + * and rsnd_ssi_register_setup() are necessary + * for SSI parent + * + * SSICR : FORCE, SCKD, SWSD + * SSIWSR : CONT + */ ssi->cr_clk = FORCE | SWL_32 | SCKD | SWSD | CKDV(idx); ssi->wsr = CONT; ssi->rate = rate; @@ -393,7 +404,8 @@ static void rsnd_ssi_register_setup(struct rsnd_mod *mod) rsnd_mod_write(mod, SSIWSR, ssi->wsr); rsnd_mod_write(mod, SSICR, ssi->cr_own | ssi->cr_clk | - ssi->cr_mode); /* without EN */ + ssi->cr_mode | + ssi->cr_en); } static void rsnd_ssi_pointer_init(struct rsnd_mod *mod, @@ -544,6 +556,8 @@ static int rsnd_ssi_start(struct rsnd_mod *mod, struct rsnd_dai_stream *io, struct rsnd_priv *priv) { + struct rsnd_ssi *ssi = rsnd_mod_to_ssi(mod); + if (!rsnd_ssi_is_run_mods(mod, io)) return 0; @@ -554,7 +568,19 @@ static int rsnd_ssi_start(struct rsnd_mod *mod, if (rsnd_ssi_multi_slaves_runtime(io)) return 0; - rsnd_mod_bset(mod, SSICR, EN, EN); + /* + * EN is for data output. + * SSI parent EN is not needed. + */ + if (rsnd_ssi_is_parent(mod, io)) + return 0; + + ssi->cr_en = EN; + + rsnd_mod_write(mod, SSICR, ssi->cr_own | + ssi->cr_clk | + ssi->cr_mode | + ssi->cr_en); return 0; } @@ -569,13 +595,7 @@ static int rsnd_ssi_stop(struct rsnd_mod *mod, if (!rsnd_ssi_is_run_mods(mod, io)) return 0; - /* - * don't stop if not last user - * see also - * rsnd_ssi_start - * rsnd_ssi_interrupt - */ - if (ssi->usrcnt > 1) + if (rsnd_ssi_is_parent(mod, io)) return 0; /* @@ -595,6 +615,8 @@ static int rsnd_ssi_stop(struct rsnd_mod *mod, rsnd_mod_write(mod, SSICR, cr); /* disabled all */ rsnd_ssi_status_check(mod, IIRQ); + ssi->cr_en = 0; + return 0; }