ASoC: rsnd: indicate register name for debug

Current rsnd driver is indicating how to use regmap debug method
on gen.c comment area.
regmap debug method indicates address and value, but rsnd driver is
using too many IPs (SSI/SSIU/SRC/CTU/MIX/DVC/CMD), and address.
Thus, we would like to know more useful information for debugging.
This patch indicates address name for debugging.
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

sound/soc/sh/rcar/gen.c

@@ -31,29 +31,33 @@ struct rsnd_gen {
 
 	/* RSND_REG_MAX base */
 	struct regmap_field *regs[RSND_REG_MAX];
+	const char *reg_name[RSND_REG_MAX];
 };
 
 #define rsnd_priv_to_gen(p)	((struct rsnd_gen *)(p)->gen)
+#define rsnd_reg_name(gen, id)	((gen)->reg_name[id])
 
 struct rsnd_regmap_field_conf {
 	int idx;
 	unsigned int reg_offset;
 	unsigned int id_offset;
+	const char *reg_name;
 };
 
-#define RSND_REG_SET(id, offset, _id_offset)	\
+#define RSND_REG_SET(id, offset, _id_offset, n)	\
 {						\
 	.idx = id,				\
 	.reg_offset = offset,			\
 	.id_offset = _id_offset,		\
+	.reg_name = n,				\
 }
 /* single address mapping */
 #define RSND_GEN_S_REG(id, offset)	\
-	RSND_REG_SET(RSND_REG_##id, offset, 0)
+	RSND_REG_SET(RSND_REG_##id, offset, 0, #id)
 
 /* multi address mapping */
 #define RSND_GEN_M_REG(id, offset, _id_offset)	\
-	RSND_REG_SET(RSND_REG_##id, offset, _id_offset)
+	RSND_REG_SET(RSND_REG_##id, offset, _id_offset, #id)
 
 /*
  *		basic function
@@ -83,8 +87,9 @@ u32 rsnd_read(struct rsnd_priv *priv,
 
 	regmap_fields_read(gen->regs[reg], rsnd_mod_id(mod), &val);
 
-	dev_dbg(dev, "r %s[%d] - %4d : %08x\n",
-		rsnd_mod_name(mod), rsnd_mod_id(mod), reg, val);
+	dev_dbg(dev, "r %s[%d] - %-18s (%4d) : %08x\n",
+		rsnd_mod_name(mod), rsnd_mod_id(mod),
+		rsnd_reg_name(gen, reg), reg, val);
 
 	return val;
 }
@@ -99,10 +104,11 @@ void rsnd_write(struct rsnd_priv *priv,
 	if (!rsnd_is_accessible_reg(priv, gen, reg))
 		return;
 
-	dev_dbg(dev, "w %s[%d] - %4d : %08x\n",
-		rsnd_mod_name(mod), rsnd_mod_id(mod), reg, data);
-
 	regmap_fields_write(gen->regs[reg], rsnd_mod_id(mod), data);
+
+	dev_dbg(dev, "w %s[%d] - %-18s (%4d) : %08x\n",
+		rsnd_mod_name(mod), rsnd_mod_id(mod),
+		rsnd_reg_name(gen, reg), reg, data);
 }
 
 void rsnd_force_write(struct rsnd_priv *priv,
@@ -115,10 +121,11 @@ void rsnd_force_write(struct rsnd_priv *priv,
 	if (!rsnd_is_accessible_reg(priv, gen, reg))
 		return;
 
-	dev_dbg(dev, "w %s[%d] - %4d : %08x\n",
-		rsnd_mod_name(mod), rsnd_mod_id(mod), reg, data);
-
 	regmap_fields_force_write(gen->regs[reg], rsnd_mod_id(mod), data);
+
+	dev_dbg(dev, "w %s[%d] - %-18s (%4d) : %08x\n",
+		rsnd_mod_name(mod), rsnd_mod_id(mod),
+		rsnd_reg_name(gen, reg), reg, data);
 }
 
 void rsnd_bset(struct rsnd_priv *priv, struct rsnd_mod *mod,
@@ -130,11 +137,13 @@ void rsnd_bset(struct rsnd_priv *priv, struct rsnd_mod *mod,
 	if (!rsnd_is_accessible_reg(priv, gen, reg))
 		return;
 
-	dev_dbg(dev, "b %s[%d] - %4d : %08x/%08x\n",
-		rsnd_mod_name(mod), rsnd_mod_id(mod), reg, data, mask);
-
 	regmap_fields_update_bits(gen->regs[reg], rsnd_mod_id(mod),
 				  mask, data);
+
+	dev_dbg(dev, "b %s[%d] - %-18s (%4d) : %08x/%08x\n",
+		rsnd_mod_name(mod), rsnd_mod_id(mod),
+		rsnd_reg_name(gen, reg), reg, data, mask);
+
 }
 
 phys_addr_t rsnd_gen_get_phy_addr(struct rsnd_priv *priv, int reg_id)
@@ -150,7 +159,7 @@ static int _rsnd_gen_regmap_init(struct rsnd_priv *priv,
 				 int id_size,
 				 int reg_id,
 				 const char *name,
-				 struct rsnd_regmap_field_conf *conf,
+				 const struct rsnd_regmap_field_conf *conf,
 				 int conf_size)
 {
 	struct platform_device *pdev = rsnd_priv_to_pdev(priv);
@@ -203,6 +212,7 @@ static int _rsnd_gen_regmap_init(struct rsnd_priv *priv,
 
 		/* RSND_REG_MAX base */
 		gen->regs[conf[i].idx] = regs;
+		gen->reg_name[conf[i].idx] = conf[i].reg_name;
 	}
 
 	return 0;
@@ -213,7 +223,7 @@ static int _rsnd_gen_regmap_init(struct rsnd_priv *priv,
  */
 static int rsnd_gen2_probe(struct rsnd_priv *priv)
 {
-	struct rsnd_regmap_field_conf conf_ssiu[] = {
+	const static struct rsnd_regmap_field_conf conf_ssiu[] = {
 		RSND_GEN_S_REG(SSI_MODE0,	0x800),
 		RSND_GEN_S_REG(SSI_MODE1,	0x804),
 		/* FIXME: it needs SSI_MODE2/3 in the future */
@@ -223,7 +233,7 @@ static int rsnd_gen2_probe(struct rsnd_priv *priv)
 		RSND_GEN_M_REG(SSI_CTRL,	0x10,	0x80),
 		RSND_GEN_M_REG(SSI_INT_ENABLE,	0x18,	0x80),
 	};
-	struct rsnd_regmap_field_conf conf_scu[] = {
+	const static struct rsnd_regmap_field_conf conf_scu[] = {
 		RSND_GEN_M_REG(SRC_BUSIF_MODE,	0x0,	0x20),
 		RSND_GEN_M_REG(SRC_BUSIF_DALIGN,0x8,	0x20),
 		RSND_GEN_M_REG(SRC_ROUTE_MODE0,	0xc,	0x20),
@@ -267,7 +277,7 @@ static int rsnd_gen2_probe(struct rsnd_priv *priv)
 		RSND_GEN_M_REG(DVC_VOL1R,	0xe2c,	0x100),
 		RSND_GEN_M_REG(DVC_DVUER,	0xe48,	0x100),
 	};
-	struct rsnd_regmap_field_conf conf_adg[] = {
+	const static struct rsnd_regmap_field_conf conf_adg[] = {
 		RSND_GEN_S_REG(BRRA,		0x00),
 		RSND_GEN_S_REG(BRRB,		0x04),
 		RSND_GEN_S_REG(SSICKR,		0x08),
@@ -287,7 +297,7 @@ static int rsnd_gen2_probe(struct rsnd_priv *priv)
 		RSND_GEN_S_REG(SRCOUT_TIMSEL4,	0x58),
 		RSND_GEN_S_REG(CMDOUT_TIMSEL,	0x5c),
 	};
-	struct rsnd_regmap_field_conf conf_ssi[] = {
+	const static struct rsnd_regmap_field_conf conf_ssi[] = {
 		RSND_GEN_M_REG(SSICR,		0x00,	0x40),
 		RSND_GEN_M_REG(SSISR,		0x04,	0x40),
 		RSND_GEN_M_REG(SSITDR,		0x08,	0x40),
@@ -318,14 +328,14 @@ static int rsnd_gen2_probe(struct rsnd_priv *priv)
 
 static int rsnd_gen1_probe(struct rsnd_priv *priv)
 {
-	struct rsnd_regmap_field_conf conf_adg[] = {
+	const static struct rsnd_regmap_field_conf conf_adg[] = {
 		RSND_GEN_S_REG(BRRA,		0x00),
 		RSND_GEN_S_REG(BRRB,		0x04),
 		RSND_GEN_S_REG(SSICKR,		0x08),
 		RSND_GEN_S_REG(AUDIO_CLK_SEL0,	0x0c),
 		RSND_GEN_S_REG(AUDIO_CLK_SEL1,	0x10),
 	};
-	struct rsnd_regmap_field_conf conf_ssi[] = {
+	const static struct rsnd_regmap_field_conf conf_ssi[] = {
 		RSND_GEN_M_REG(SSICR,		0x00,	0x40),
 		RSND_GEN_M_REG(SSISR,		0x04,	0x40),
 		RSND_GEN_M_REG(SSITDR,		0x08,	0x40),