ASoC: rsnd: don't use PDTA bit for 24bit on SSI

Current SSI uses PDTA bit which indicates data that Input/Output
data are Right-Aligned. But, 24bit sound should be Left-Aligned
in this HW. Because Linux is using Right-Aligned data, and HW uses
Left-Aligned data, current 24bit data is missing lower 8bit.
To fix this issue, this patch removes PDTA bit, and shift 8bit
in necessary module

Reported-by: Hiroyuki Yokoyama <hiroyuki.yokoyama.vx@renesas.com>
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Tested-by: Hiroyuki Yokoyama <hiroyuki.yokoyama.vx@renesas.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

7 files changed, 68 insertions, 4 deletions

diff --git a/sound/soc/sh/rcar/cmd.c b/sound/soc/sh/rcar/cmd.c
index 7d92a24b7cfa..d879c010cf03 100644
--- a/sound/soc/sh/rcar/cmd.c
+++ b/sound/soc/sh/rcar/cmd.c
@@ -89,6 +89,7 @@ static int rsnd_cmd_init(struct rsnd_mod *mod,
         dev_dbg(dev, "ctu/mix path = 0x%08x", data);
 
         rsnd_mod_write(mod, CMD_ROUTE_SLCT, data);
+        rsnd_mod_write(mod, CMD_BUSIF_MODE, rsnd_get_busif_shift(io, mod) | 1);
         rsnd_mod_write(mod, CMD_BUSIF_DALIGN, rsnd_get_dalign(mod, io));
 
         rsnd_adg_set_cmd_timsel_gen2(mod, io);
diff --git a/sound/soc/sh/rcar/core.c b/sound/soc/sh/rcar/core.c
index 1744015408c3..8c1f4e2e0c4f 100644
--- a/sound/soc/sh/rcar/core.c
+++ b/sound/soc/sh/rcar/core.c
@@ -343,6 +343,57 @@ u32 rsnd_get_dalign(struct rsnd_mod *mod, struct rsnd_dai_stream *io)
                 return 0x76543210;
 }
 
+u32 rsnd_get_busif_shift(struct rsnd_dai_stream *io, struct rsnd_mod *mod)
+{
+        enum rsnd_mod_type playback_mods[] = {
+                RSND_MOD_SRC,
+                RSND_MOD_CMD,
+                RSND_MOD_SSIU,
+        };
+        enum rsnd_mod_type capture_mods[] = {
+                RSND_MOD_CMD,
+                RSND_MOD_SRC,
+                RSND_MOD_SSIU,
+        };
+        struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io);
+        struct rsnd_mod *tmod = NULL;
+        enum rsnd_mod_type *mods =
+                rsnd_io_is_play(io) ?
+                playback_mods : capture_mods;
+        int i;
+
+        /*
+         * This is needed for 24bit data
+         * We need to shift 8bit
+         *
+         * Linux 24bit data is located as 0x00******
+         * HW    24bit data is located as 0x******00
+         *
+         */
+        switch (runtime->sample_bits) {
+        case 16:
+                return 0;
+        case 32:
+                break;
+        }
+
+        for (i = 0; i < ARRAY_SIZE(playback_mods); i++) {
+                tmod = rsnd_io_to_mod(io, mods[i]);
+                if (tmod)
+                        break;
+        }
+
+        if (tmod != mod)
+                return 0;
+
+        if (rsnd_io_is_play(io))
+                return  (0 << 20) | /* shift to Left */
+                        (8 << 16);  /* 8bit */
+        else
+                return  (1 << 20) | /* shift to Right */
+                        (8 << 16);  /* 8bit */
+}
+
 /*
  *      rsnd_dai functions
  */
diff --git a/sound/soc/sh/rcar/gen.c b/sound/soc/sh/rcar/gen.c
index 63b6d3c28021..4b0980728e13 100644
--- a/sound/soc/sh/rcar/gen.c
+++ b/sound/soc/sh/rcar/gen.c
@@ -236,6 +236,7 @@ static int rsnd_gen2_probe(struct rsnd_priv *priv)
                 RSND_GEN_M_REG(SRC_ROUTE_MODE0, 0xc,    0x20),
                 RSND_GEN_M_REG(SRC_CTRL,        0x10,   0x20),
                 RSND_GEN_M_REG(SRC_INT_ENABLE0, 0x18,   0x20),
+                RSND_GEN_M_REG(CMD_BUSIF_MODE,  0x184,  0x20),
                 RSND_GEN_M_REG(CMD_BUSIF_DALIGN,0x188,  0x20),
                 RSND_GEN_M_REG(CMD_ROUTE_SLCT,  0x18c,  0x20),
                 RSND_GEN_M_REG(CMD_CTRL,        0x190,  0x20),
diff --git a/sound/soc/sh/rcar/rsnd.h b/sound/soc/sh/rcar/rsnd.h
index dbf4163427e8..323af41ecfcb 100644
--- a/sound/soc/sh/rcar/rsnd.h
+++ b/sound/soc/sh/rcar/rsnd.h
@@ -73,6 +73,7 @@ enum rsnd_reg {
         RSND_REG_SCU_SYS_INT_EN0,
         RSND_REG_SCU_SYS_INT_EN1,
         RSND_REG_CMD_CTRL,
+        RSND_REG_CMD_BUSIF_MODE,
         RSND_REG_CMD_BUSIF_DALIGN,
         RSND_REG_CMD_ROUTE_SLCT,
         RSND_REG_CMDOUT_TIMSEL,
@@ -204,6 +205,7 @@ void rsnd_bset(struct rsnd_priv *priv, struct rsnd_mod *mod, enum rsnd_reg reg,
                     u32 mask, u32 data);
 u32 rsnd_get_adinr_bit(struct rsnd_mod *mod, struct rsnd_dai_stream *io);
 u32 rsnd_get_dalign(struct rsnd_mod *mod, struct rsnd_dai_stream *io);
+u32 rsnd_get_busif_shift(struct rsnd_dai_stream *io, struct rsnd_mod *mod);
 
 /*
  *      R-Car DMA
diff --git a/sound/soc/sh/rcar/src.c b/sound/soc/sh/rcar/src.c
index 20b5b2ec625e..76a477a3ccb5 100644
--- a/sound/soc/sh/rcar/src.c
+++ b/sound/soc/sh/rcar/src.c
@@ -190,11 +190,13 @@ static void rsnd_src_set_convert_rate(struct rsnd_dai_stream *io,
         struct rsnd_priv *priv = rsnd_mod_to_priv(mod);
         struct device *dev = rsnd_priv_to_dev(priv);
         struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io);
+        int is_play = rsnd_io_is_play(io);
         int use_src = 0;
         u32 fin, fout;
         u32 ifscr, fsrate, adinr;
         u32 cr, route;
         u32 bsdsr, bsisr;
+        u32 i_busif, o_busif, tmp;
         uint ratio;
 
         if (!runtime)
@@ -270,6 +272,11 @@ static void rsnd_src_set_convert_rate(struct rsnd_dai_stream *io,
                 break;
         }
 
+        /* BUSIF_MODE */
+        tmp = rsnd_get_busif_shift(io, mod);
+        i_busif = ( is_play ? tmp : 0) | 1;
+        o_busif = (!is_play ? tmp : 0) | 1;
+
         rsnd_mod_write(mod, SRC_ROUTE_MODE0, route);
 
         rsnd_mod_write(mod, SRC_SRCIR, 1);      /* initialize */
@@ -281,8 +288,9 @@ static void rsnd_src_set_convert_rate(struct rsnd_dai_stream *io,
         rsnd_mod_write(mod, SRC_BSISR, bsisr);
         rsnd_mod_write(mod, SRC_SRCIR, 0);      /* cancel initialize */
 
-        rsnd_mod_write(mod, SRC_I_BUSIF_MODE, 1);
-        rsnd_mod_write(mod, SRC_O_BUSIF_MODE, 1);
+        rsnd_mod_write(mod, SRC_I_BUSIF_MODE, i_busif);
+        rsnd_mod_write(mod, SRC_O_BUSIF_MODE, o_busif);
+
         rsnd_mod_write(mod, SRC_BUSIF_DALIGN, rsnd_get_dalign(mod, io));
 
         rsnd_adg_set_src_timesel_gen2(mod, io, fin, fout);
diff --git a/sound/soc/sh/rcar/ssi.c b/sound/soc/sh/rcar/ssi.c
index 135c5669f796..e43277a5068c 100644
--- a/sound/soc/sh/rcar/ssi.c
+++ b/sound/soc/sh/rcar/ssi.c
@@ -302,7 +302,7 @@ static void rsnd_ssi_config_init(struct rsnd_mod *mod,
          * always use 32bit system word.
          * see also rsnd_ssi_master_clk_enable()
          */
-        cr_own = FORCE | SWL_32 | PDTA;
+        cr_own = FORCE | SWL_32;
 
         if (rdai->bit_clk_inv)
                 cr_own |= SCKP;
diff --git a/sound/soc/sh/rcar/ssiu.c b/sound/soc/sh/rcar/ssiu.c
index 14fafdaf1395..512d238b79e2 100644
--- a/sound/soc/sh/rcar/ssiu.c
+++ b/sound/soc/sh/rcar/ssiu.c
@@ -144,7 +144,8 @@ static int rsnd_ssiu_init_gen2(struct rsnd_mod *mod,
                                (rsnd_io_is_play(io) ?
                                 rsnd_runtime_channel_after_ctu(io) :
                                 rsnd_runtime_channel_original(io)));
-                rsnd_mod_write(mod, SSI_BUSIF_MODE,  1);
+                rsnd_mod_write(mod, SSI_BUSIF_MODE,
+                               rsnd_get_busif_shift(io, mod) | 1);
                 rsnd_mod_write(mod, SSI_BUSIF_DALIGN,
                                rsnd_get_dalign(mod, io));
         }