patches.renesas/0026-ASoC-rsnd-SSI_MODE0-1-settings-goes-to-scu.c.patch

From 3f9a38e9470a0ac77423ec3118000f1273f8889f Mon Sep 17 00:00:00 2001
From: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Date: Thu, 23 Jan 2014 18:39:32 -0800
Subject: ASoC: rsnd: SSI_MODE0/1 settings goes to scu.c

SRU (Gen1) / SCU (Gen2) / SSIU (Gen2) are controlled under scu.c.
(SCU + SSIU (Gen2) was SRU (Gen1))
And register of SSI_MODE0/1 are mapped on these IP.
But these have been implemented under ssi.c on this driver.
The naming is very confusable,
but it should be implemented under scu.c

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
(cherry picked from commit 7b5ce9759a60ebdffa1e76224ccb3d85bd06e4ac)
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
---
 sound/soc/sh/rcar/rsnd.h |  1 +
 sound/soc/sh/rcar/scu.c  | 45 ++++++++++++++++++++++
 sound/soc/sh/rcar/ssi.c  | 98 ++++++++++++++----------------------------------
 3 files changed, 74 insertions(+), 70 deletions(-)

diff --git a/sound/soc/sh/rcar/rsnd.h b/sound/soc/sh/rcar/rsnd.h
index cd396dda85c5..85b926229b81 100644
--- a/sound/soc/sh/rcar/rsnd.h
+++ b/sound/soc/sh/rcar/rsnd.h
@@ -321,5 +321,6 @@ void rsnd_ssi_remove(struct platform_device *pdev,
 struct rsnd_mod *rsnd_ssi_mod_get(struct rsnd_priv *priv, int id);
 struct rsnd_mod *rsnd_ssi_mod_get_frm_dai(struct rsnd_priv *priv,
 					  int dai_id, int is_play);
+int rsnd_ssi_is_pin_sharing(struct rsnd_mod *mod);
 
 #endif
diff --git a/sound/soc/sh/rcar/scu.c b/sound/soc/sh/rcar/scu.c
index 5d2dbbbf9d98..ade10474a0cf 100644
--- a/sound/soc/sh/rcar/scu.c
+++ b/sound/soc/sh/rcar/scu.c
@@ -49,6 +49,46 @@ struct rsnd_scu {
 		     ((pos) = (struct rsnd_scu *)(priv)->scu + i);	\
 	     i++)
 
+static int rsnd_scu_ssi_mode_init(struct rsnd_mod *mod,
+				  struct rsnd_dai *rdai,
+				  struct rsnd_dai_stream *io)
+{
+	struct rsnd_priv *priv = rsnd_mod_to_priv(mod);
+	int id = rsnd_mod_id(mod);
+
+	/*
+	 * SSI_MODE0
+	 */
+	rsnd_mod_bset(mod, SSI_MODE0, (1 << id),
+		      rsnd_scu_hpbif_is_enable(mod) ? 0 : (1 << id));
+
+	/*
+	 * SSI_MODE1
+	 */
+	if (rsnd_ssi_is_pin_sharing(rsnd_ssi_mod_get(priv, id))) {
+		int shift = -1;
+		switch (id) {
+		case 1:
+			shift = 0;
+			break;
+		case 2:
+			shift = 2;
+			break;
+		case 4:
+			shift = 16;
+			break;
+		}
+
+		if (shift >= 0)
+			rsnd_mod_bset(mod, SSI_MODE1,
+				      0x3 << shift,
+				      rsnd_dai_is_clk_master(rdai) ?
+				      0x2 << shift : 0x1 << shift);
+	}
+
+	return 0;
+}
+
 /* Gen1 only */
 static int rsnd_src_set_route_if_gen1(
 			      struct rsnd_mod *mod,
@@ -235,6 +275,10 @@ static int rsnd_scu_init(struct rsnd_mod *mod,
 
 	clk_enable(scu->clk);
 
+	ret = rsnd_scu_ssi_mode_init(mod, rdai, io);
+	if (ret < 0)
+		return ret;
+
 	ret = rsnd_src_set_route_if_gen1(mod, rdai, io);
 	if (ret < 0)
 		return ret;
@@ -301,6 +345,7 @@ static struct rsnd_mod_ops rsnd_scu_ops = {
 
 static struct rsnd_mod_ops rsnd_scu_non_ops = {
 	.name	= "scu (non)",
+	.init	= rsnd_scu_ssi_mode_init,
 };
 
 struct rsnd_mod *rsnd_scu_mod_get(struct rsnd_priv *priv, int id)
diff --git a/sound/soc/sh/rcar/ssi.c b/sound/soc/sh/rcar/ssi.c
index 68393a9f91bf..0f314db8cb50 100644
--- a/sound/soc/sh/rcar/ssi.c
+++ b/sound/soc/sh/rcar/ssi.c
@@ -75,9 +75,6 @@ struct rsnd_ssi {
 };
 
 struct rsnd_ssiu {
-	u32 ssi_mode0;
-	u32 ssi_mode1;
-
 	int ssi_nr;
 	struct rsnd_ssi *ssi;
 };
@@ -100,70 +97,6 @@ struct rsnd_ssiu {
 #define rsnd_ssi_to_ssiu(ssi)\
 	(((struct rsnd_ssiu *)((ssi) - rsnd_mod_id(&(ssi)->mod))) - 1)
 
-static void rsnd_ssi_mode_set(struct rsnd_priv *priv,
-			      struct rsnd_dai *rdai,
-			      struct rsnd_ssi *ssi)
-{
-	struct device *dev = rsnd_priv_to_dev(priv);
-	struct rsnd_mod *scu;
-	struct rsnd_ssiu *ssiu = rsnd_ssi_to_ssiu(ssi);
-	int id = rsnd_mod_id(&ssi->mod);
-	u32 flags;
-	u32 val;
-
-	scu   = rsnd_scu_mod_get(priv, rsnd_mod_id(&ssi->mod));
-
-	/*
-	 * SSI_MODE0
-	 */
-
-	/* see also BUSIF_MODE */
-	if (rsnd_scu_hpbif_is_enable(scu)) {
-		ssiu->ssi_mode0 &= ~(1 << id);
-		dev_dbg(dev, "SSI%d uses DEPENDENT mode\n", id);
-	} else {
-		ssiu->ssi_mode0 |= (1 << id);
-		dev_dbg(dev, "SSI%d uses INDEPENDENT mode\n", id);
-	}
-
-	/*
-	 * SSI_MODE1
-	 */
-#define ssi_parent_set(p, sync, adg, ext)		\
-	do {						\
-		ssi->parent = ssiu->ssi + p;		\
-		if (rsnd_dai_is_clk_master(rdai))	\
-			val = adg;			\
-		else					\
-			val = ext;			\
-	} while (0)
-
-	flags = rsnd_ssi_mode_flags(ssi);
-	if (flags & RSND_SSI_CLK_PIN_SHARE) {
-
-		val = 0;
-		switch (id) {
-		case 1:
-			ssi_parent_set(0, (1 << 4), (0x2 << 0), (0x1 << 0));
-			break;
-		case 2:
-			ssi_parent_set(0, (1 << 4), (0x2 << 2), (0x1 << 2));
-			break;
-		case 4:
-			ssi_parent_set(3, (1 << 20), (0x2 << 16), (0x1 << 16));
-			break;
-		case 8:
-			ssi_parent_set(7, 0, 0, 0);
-			break;
-		}
-
-		ssiu->ssi_mode1 |= val;
-	}
-
-	rsnd_mod_write(&ssi->mod, SSI_MODE0, ssiu->ssi_mode0);
-	rsnd_mod_write(&ssi->mod, SSI_MODE1, ssiu->ssi_mode1);
-}
-
 static void rsnd_ssi_status_check(struct rsnd_mod *mod,
 				  u32 bit)
 {
@@ -320,7 +253,6 @@ static int rsnd_ssi_init(struct rsnd_mod *mod,
 			 struct rsnd_dai_stream *io)
 {
 	struct rsnd_ssi *ssi = rsnd_mod_to_ssi(mod);
-	struct rsnd_priv *priv = rsnd_mod_to_priv(mod);
 	struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io);
 	u32 cr;
 
@@ -365,8 +297,6 @@ static int rsnd_ssi_init(struct rsnd_mod *mod,
 	ssi->cr_own	= cr;
 	ssi->err	= -1; /* ignore 1st error */
 
-	rsnd_ssi_mode_set(priv, rdai, ssi);
-
 	return 0;
 }
 
@@ -588,6 +518,32 @@ struct rsnd_mod *rsnd_ssi_mod_get(struct rsnd_priv *priv, int id)
 	return &(((struct rsnd_ssiu *)(priv->ssiu))->ssi + id)->mod;
 }
 
+int rsnd_ssi_is_pin_sharing(struct rsnd_mod *mod)
+{
+	struct rsnd_ssi *ssi = rsnd_mod_to_ssi(mod);
+
+	return !!(rsnd_ssi_mode_flags(ssi) & RSND_SSI_CLK_PIN_SHARE);
+}
+
+static void rsnd_ssi_parent_clk_setup(struct rsnd_priv *priv, struct rsnd_ssi *ssi)
+{
+	if (!rsnd_ssi_is_pin_sharing(&ssi->mod))
+		return;
+
+	switch (rsnd_mod_id(&ssi->mod)) {
+	case 1:
+	case 2:
+		ssi->parent = rsnd_mod_to_ssi(rsnd_ssi_mod_get(priv, 0));
+		break;
+	case 4:
+		ssi->parent = rsnd_mod_to_ssi(rsnd_ssi_mod_get(priv, 3));
+		break;
+	case 8:
+		ssi->parent = rsnd_mod_to_ssi(rsnd_ssi_mod_get(priv, 7));
+		break;
+	}
+}
+
 int rsnd_ssi_probe(struct platform_device *pdev,
 		   struct rcar_snd_info *info,
 		   struct rsnd_priv *priv)
@@ -668,6 +624,8 @@ int rsnd_ssi_probe(struct platform_device *pdev,
 		}
 
 		rsnd_mod_init(priv, &ssi->mod, ops, i);
+
+		rsnd_ssi_parent_clk_setup(priv, ssi);
 	}
 
 	dev_dbg(dev, "ssi probed\n");
-- 
2.1.2