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Diffstat (limited to 'sound/soc/sh/rcar/ssi.c')
-rw-r--r--sound/soc/sh/rcar/ssi.c59
1 files changed, 33 insertions, 26 deletions
diff --git a/sound/soc/sh/rcar/ssi.c b/sound/soc/sh/rcar/ssi.c
index 6e1166ec24a0..8304e4ec9242 100644
--- a/sound/soc/sh/rcar/ssi.c
+++ b/sound/soc/sh/rcar/ssi.c
@@ -1,16 +1,12 @@
-/*
- * Renesas R-Car SSIU/SSI support
- *
- * Copyright (C) 2013 Renesas Solutions Corp.
- * Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
- *
- * Based on fsi.c
- * Kuninori Morimoto <morimoto.kuninori@renesas.com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- */
+// SPDX-License-Identifier: GPL-2.0
+//
+// Renesas R-Car SSIU/SSI support
+//
+// Copyright (C) 2013 Renesas Solutions Corp.
+// Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
+//
+// Based on fsi.c
+// Kuninori Morimoto <morimoto.kuninori@renesas.com>
/*
* you can enable below define if you don't need
@@ -37,6 +33,7 @@
#define CHNL_4 (1 << 22) /* Channels */
#define CHNL_6 (2 << 22) /* Channels */
#define CHNL_8 (3 << 22) /* Channels */
+#define DWL_MASK (7 << 19) /* Data Word Length mask */
#define DWL_8 (0 << 19) /* Data Word Length */
#define DWL_16 (1 << 19) /* Data Word Length */
#define DWL_18 (2 << 19) /* Data Word Length */
@@ -353,21 +350,18 @@ static void rsnd_ssi_config_init(struct rsnd_mod *mod,
struct rsnd_dai *rdai = rsnd_io_to_rdai(io);
struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io);
struct rsnd_ssi *ssi = rsnd_mod_to_ssi(mod);
- u32 cr_own;
- u32 cr_mode;
- u32 wsr;
+ u32 cr_own = ssi->cr_own;
+ u32 cr_mode = ssi->cr_mode;
+ u32 wsr = ssi->wsr;
int is_tdm;
- if (rsnd_ssi_is_parent(mod, io))
- return;
-
is_tdm = rsnd_runtime_is_ssi_tdm(io);
/*
* always use 32bit system word.
* see also rsnd_ssi_master_clk_enable()
*/
- cr_own = FORCE | SWL_32;
+ cr_own |= FORCE | SWL_32;
if (rdai->bit_clk_inv)
cr_own |= SCKP;
@@ -377,9 +371,18 @@ static void rsnd_ssi_config_init(struct rsnd_mod *mod,
cr_own |= SDTA;
if (rdai->sys_delay)
cr_own |= DEL;
+
+ /*
+ * We shouldn't exchange SWSP after running.
+ * This means, parent needs to care it.
+ */
+ if (rsnd_ssi_is_parent(mod, io))
+ goto init_end;
+
if (rsnd_io_is_play(io))
cr_own |= TRMD;
+ cr_own &= ~DWL_MASK;
switch (snd_pcm_format_width(runtime->format)) {
case 16:
cr_own |= DWL_16;
@@ -406,7 +409,7 @@ static void rsnd_ssi_config_init(struct rsnd_mod *mod,
wsr |= WS_MODE;
cr_own |= CHNL_8;
}
-
+init_end:
ssi->cr_own = cr_own;
ssi->cr_mode = cr_mode;
ssi->wsr = wsr;
@@ -470,15 +473,18 @@ static int rsnd_ssi_quit(struct rsnd_mod *mod,
return -EIO;
}
- if (!rsnd_ssi_is_parent(mod, io))
- ssi->cr_own = 0;
-
rsnd_ssi_master_clk_stop(mod, io);
rsnd_mod_power_off(mod);
ssi->usrcnt--;
+ if (!ssi->usrcnt) {
+ ssi->cr_own = 0;
+ ssi->cr_mode = 0;
+ ssi->wsr = 0;
+ }
+
return 0;
}
@@ -1055,9 +1061,10 @@ struct rsnd_mod *rsnd_ssi_mod_get(struct rsnd_priv *priv, int id)
int __rsnd_ssi_is_pin_sharing(struct rsnd_mod *mod)
{
- struct rsnd_ssi *ssi = rsnd_mod_to_ssi(mod);
+ if (!mod)
+ return 0;
- return !!(rsnd_flags_has(ssi, RSND_SSI_CLK_PIN_SHARE));
+ return !!(rsnd_flags_has(rsnd_mod_to_ssi(mod), RSND_SSI_CLK_PIN_SHARE));
}
static u32 *rsnd_ssi_get_status(struct rsnd_dai_stream *io,