ASoC: rsnd: ssiu: Support BUSIF other than BUSIF0

Currently only BUSIF0 is supported by SSIU, all register setting
is done only for BUSIF.

Since BUSIF1 ~ BUSIF7 has been supported, so also support
these BUSIF from SSIU.

One note is that we can't support SSI9-4/5/6/7 so far,
because its address is out of calculation rule.

Signed-off-by: Jiada Wang <jiada_wang@mentor.com>
Signed-off-by: Timo Wischer <twischer@de.adit-jv.com>
[Kuninori: tidyup for upstream]
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>

sound/soc/sh/rcar/gen.c

@@ -219,9 +219,30 @@ static int rsnd_gen2_probe(struct rsnd_priv *priv)
 		RSND_GEN_S_REG(HDMI1_SEL,	0x9e4),
 
 		/* FIXME: it needs SSI_MODE2/3 in the future */
-		RSND_GEN_M_REG(SSI_BUSIF_MODE,	0x0,	0x80),
+		RSND_GEN_M_REG(SSI_BUSIF0_MODE,		0x0,	0x80),
-		RSND_GEN_M_REG(SSI_BUSIF_ADINR,	0x4,	0x80),
+		RSND_GEN_M_REG(SSI_BUSIF0_ADINR,	0x4,	0x80),
-		RSND_GEN_M_REG(SSI_BUSIF_DALIGN,0x8,	0x80),
+		RSND_GEN_M_REG(SSI_BUSIF0_DALIGN,	0x8,	0x80),
+		RSND_GEN_M_REG(SSI_BUSIF1_MODE,         0x20,   0x80),
+		RSND_GEN_M_REG(SSI_BUSIF1_ADINR,        0x24,   0x80),
+		RSND_GEN_M_REG(SSI_BUSIF1_DALIGN,       0x28,   0x80),
+		RSND_GEN_M_REG(SSI_BUSIF2_MODE,         0x40,   0x80),
+		RSND_GEN_M_REG(SSI_BUSIF2_ADINR,        0x44,   0x80),
+		RSND_GEN_M_REG(SSI_BUSIF2_DALIGN,       0x48,   0x80),
+		RSND_GEN_M_REG(SSI_BUSIF3_MODE,         0x60,   0x80),
+		RSND_GEN_M_REG(SSI_BUSIF3_ADINR,        0x64,   0x80),
+		RSND_GEN_M_REG(SSI_BUSIF3_DALIGN,       0x68,   0x80),
+		RSND_GEN_M_REG(SSI_BUSIF4_MODE,         0x500,  0x80),
+		RSND_GEN_M_REG(SSI_BUSIF4_ADINR,        0x504,  0x80),
+		RSND_GEN_M_REG(SSI_BUSIF4_DALIGN,       0x508,  0x80),
+		RSND_GEN_M_REG(SSI_BUSIF5_MODE,         0x520,  0x80),
+		RSND_GEN_M_REG(SSI_BUSIF5_ADINR,        0x524,  0x80),
+		RSND_GEN_M_REG(SSI_BUSIF5_DALIGN,       0x528,  0x80),
+		RSND_GEN_M_REG(SSI_BUSIF6_MODE,         0x540,  0x80),
+		RSND_GEN_M_REG(SSI_BUSIF6_ADINR,        0x544,  0x80),
+		RSND_GEN_M_REG(SSI_BUSIF6_DALIGN,       0x548,  0x80),
+		RSND_GEN_M_REG(SSI_BUSIF7_MODE,         0x560,  0x80),
+		RSND_GEN_M_REG(SSI_BUSIF7_ADINR,        0x564,  0x80),
+		RSND_GEN_M_REG(SSI_BUSIF7_DALIGN,       0x568,  0x80),
 		RSND_GEN_M_REG(SSI_MODE,	0xc,	0x80),
 		RSND_GEN_M_REG(SSI_CTRL,	0x10,	0x80),
 		RSND_GEN_M_REG(SSI_INT_ENABLE,	0x18,	0x80),

sound/soc/sh/rcar/rsnd.h

@@ -156,9 +156,30 @@ enum rsnd_reg {
 	RSND_REG_SSI_MODE2,
 	RSND_REG_SSI_CONTROL,
 	RSND_REG_SSI_CTRL,
-	RSND_REG_SSI_BUSIF_MODE,
+	RSND_REG_SSI_BUSIF0_MODE,
-	RSND_REG_SSI_BUSIF_ADINR,
+	RSND_REG_SSI_BUSIF0_ADINR,
-	RSND_REG_SSI_BUSIF_DALIGN,
+	RSND_REG_SSI_BUSIF0_DALIGN,
+	RSND_REG_SSI_BUSIF1_MODE,
+	RSND_REG_SSI_BUSIF1_ADINR,
+	RSND_REG_SSI_BUSIF1_DALIGN,
+	RSND_REG_SSI_BUSIF2_MODE,
+	RSND_REG_SSI_BUSIF2_ADINR,
+	RSND_REG_SSI_BUSIF2_DALIGN,
+	RSND_REG_SSI_BUSIF3_MODE,
+	RSND_REG_SSI_BUSIF3_ADINR,
+	RSND_REG_SSI_BUSIF3_DALIGN,
+	RSND_REG_SSI_BUSIF4_MODE,
+	RSND_REG_SSI_BUSIF4_ADINR,
+	RSND_REG_SSI_BUSIF4_DALIGN,
+	RSND_REG_SSI_BUSIF5_MODE,
+	RSND_REG_SSI_BUSIF5_ADINR,
+	RSND_REG_SSI_BUSIF5_DALIGN,
+	RSND_REG_SSI_BUSIF6_MODE,
+	RSND_REG_SSI_BUSIF6_ADINR,
+	RSND_REG_SSI_BUSIF6_DALIGN,
+	RSND_REG_SSI_BUSIF7_MODE,
+	RSND_REG_SSI_BUSIF7_ADINR,
+	RSND_REG_SSI_BUSIF7_DALIGN,
 	RSND_REG_SSI_INT_ENABLE,
 	RSND_REG_SSI_SYS_STATUS0,
 	RSND_REG_SSI_SYS_STATUS1,

sound/soc/sh/rcar/ssiu.c

@@ -140,15 +140,59 @@ static int rsnd_ssiu_init_gen2(struct rsnd_mod *mod,
 	rsnd_mod_write(mod, SSI_MODE, mode);
 
 	if (rsnd_ssi_use_busif(io)) {
-		rsnd_mod_write(mod, SSI_BUSIF_ADINR,
+		int id = rsnd_mod_id(mod);
-			       rsnd_get_adinr_bit(mod, io) |
+		int busif = rsnd_ssi_get_busif(io);
-			       (rsnd_io_is_play(io) ?
+
-				rsnd_runtime_channel_after_ctu(io) :
+		/*
-				rsnd_runtime_channel_original(io)));
+		 * FIXME
-		rsnd_mod_write(mod, SSI_BUSIF_MODE,
+		 *
-			       rsnd_get_busif_shift(io, mod) | 1);
+		 * We can't support SSI9-4/5/6/7, because its address is
-		rsnd_mod_write(mod, SSI_BUSIF_DALIGN,
+		 * out of calculation rule
-			       rsnd_get_dalign(mod, io));
+		 */
+		if ((id == 9) && (busif >= 4)) {
+			struct device *dev = rsnd_priv_to_dev(priv);
+
+			dev_err(dev, "This driver doesn't support SSI%d-%d, so far",
+				id, busif);
+		}
+
+#define RSND_WRITE_BUSIF(i)						\
+		rsnd_mod_write(mod, SSI_BUSIF##i##_ADINR,		\
+			       rsnd_get_adinr_bit(mod, io) |		\
+			       (rsnd_io_is_play(io) ?			\
+				rsnd_runtime_channel_after_ctu(io) :	\
+				rsnd_runtime_channel_original(io)));	\
+		rsnd_mod_write(mod, SSI_BUSIF##i##_MODE,		\
+			       rsnd_get_busif_shift(io, mod) | 1);	\
+		rsnd_mod_write(mod, SSI_BUSIF##i##_DALIGN,		\
+			       rsnd_get_dalign(mod, io))
+
+		switch (busif) {
+		case 0:
+			RSND_WRITE_BUSIF(0);
+			break;
+		case 1:
+			RSND_WRITE_BUSIF(1);
+			break;
+		case 2:
+			RSND_WRITE_BUSIF(2);
+			break;
+		case 3:
+			RSND_WRITE_BUSIF(3);
+			break;
+		case 4:
+			RSND_WRITE_BUSIF(4);
+			break;
+		case 5:
+			RSND_WRITE_BUSIF(5);
+			break;
+		case 6:
+			RSND_WRITE_BUSIF(6);
+			break;
+		case 7:
+			RSND_WRITE_BUSIF(7);
+			break;
+		}
 	}
 
 	if (hdmi) {
@@ -194,10 +238,12 @@ static int rsnd_ssiu_start_gen2(struct rsnd_mod *mod,
 				struct rsnd_dai_stream *io,
 				struct rsnd_priv *priv)
 {
+	int busif = rsnd_ssi_get_busif(io);
+
 	if (!rsnd_ssi_use_busif(io))
 		return 0;
 
-	rsnd_mod_write(mod, SSI_CTRL, 0x1);
+	rsnd_mod_bset(mod, SSI_CTRL, 1 << (busif * 4), 1 << (busif * 4));
 
 	if (rsnd_ssi_multi_slaves_runtime(io))
 		rsnd_mod_write(mod, SSI_CONTROL, 0x1);
@@ -209,10 +255,12 @@ static int rsnd_ssiu_stop_gen2(struct rsnd_mod *mod,
 			       struct rsnd_dai_stream *io,
 			       struct rsnd_priv *priv)
 {
+	int busif = rsnd_ssi_get_busif(io);
+
 	if (!rsnd_ssi_use_busif(io))
 		return 0;
 
-	rsnd_mod_write(mod, SSI_CTRL, 0);
+	rsnd_mod_bset(mod, SSI_CTRL, 1 << (busif * 4), 0);
 
 	if (rsnd_ssi_multi_slaves_runtime(io))
 		rsnd_mod_write(mod, SSI_CONTROL, 0);