Merge remote-tracking branch 'asoc/topic/rcar' into asoc-next

include/sound/rcar_snd.h

+/*
+ * Renesas R-Car SRU/SCU/SSIU/SSI support
+ *
+ * Copyright (C) 2013 Renesas Solutions Corp.
+ * Kuninori Morimoto <kuninori.morimoto.gx@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.
+ */
+
+#ifndef RCAR_SND_H
+#define RCAR_SND_H
+
+#include <linux/sh_clk.h>
+
+#define RSND_GEN1_SRU	0
+#define RSND_GEN1_ADG	1
+#define RSND_GEN1_SSI	2
+
+#define RSND_GEN2_SRU	0
+#define RSND_GEN2_ADG	1
+#define RSND_GEN2_SSIU	2
+#define RSND_GEN2_SSI	3
+
+#define RSND_BASE_MAX	4
+
+/*
+ * flags
+ *
+ * 0xAB000000
+ *
+ * A : clock sharing settings
+ * B : SSI direction
+ */
+#define RSND_SSI_CLK_PIN_SHARE		(1 << 31)
+#define RSND_SSI_CLK_FROM_ADG		(1 << 30) /* clock parent is master */
+#define RSND_SSI_SYNC			(1 << 29) /* SSI34_sync etc */
+#define RSND_SSI_DEPENDENT		(1 << 28) /* SSI needs SRU/SCU */
+
+#define RSND_SSI_PLAY			(1 << 24)
+
+#define RSND_SSI_SET(_dai_id, _dma_id, _pio_irq, _flags)	\
+{ .dai_id = _dai_id, .dma_id = _dma_id, .pio_irq = _pio_irq, .flags = _flags }
+#define RSND_SSI_UNUSED \
+{ .dai_id = -1, .dma_id = -1, .pio_irq = -1, .flags = 0 }
+
+struct rsnd_ssi_platform_info {
+	int dai_id;
+	int dma_id;
+	int pio_irq;
+	u32 flags;
+};
+
+/*
+ * flags
+ */
+#define RSND_SCU_USB_HPBIF		(1 << 31) /* it needs RSND_SSI_DEPENDENT */
+
+struct rsnd_scu_platform_info {
+	u32 flags;
+};
+
+/*
+ * flags
+ *
+ * 0x0000000A
+ *
+ * A : generation
+ */
+#define RSND_GEN1	(1 << 0) /* fixme */
+#define RSND_GEN2	(2 << 0) /* fixme */
+
+struct rcar_snd_info {
+	u32 flags;
+	struct rsnd_ssi_platform_info *ssi_info;
+	int ssi_info_nr;
+	struct rsnd_scu_platform_info *scu_info;
+	int scu_info_nr;
+	int (*start)(int id);
+	int (*stop)(int id);
+};
+
+#endif

sound/soc/sh/Kconfig

@@ -34,6 +34,13 @@ config SND_SOC_SH4_SIU
 	select SH_DMAE
 	select FW_LOADER
 
+config SND_SOC_RCAR
+	tristate "R-Car series SRU/SCU/SSIU/SSI support"
+	select SND_SIMPLE_CARD
+	select RCAR_CLK_ADG
+	help
+	  This option enables R-Car SUR/SCU/SSIU/SSI sound support
+
 ##
 ## Boards
 ##

sound/soc/sh/Makefile

@@ -12,6 +12,9 @@ obj-$(CONFIG_SND_SOC_SH4_SSI)	+= snd-soc-ssi.o
 obj-$(CONFIG_SND_SOC_SH4_FSI)	+= snd-soc-fsi.o
 obj-$(CONFIG_SND_SOC_SH4_SIU)	+= snd-soc-siu.o
 
+## audio units for R-Car
+obj-$(CONFIG_SND_SOC_RCAR)	+= rcar/
+
 ## boards
 snd-soc-sh7760-ac97-objs	:= sh7760-ac97.o
 snd-soc-migor-objs		:= migor.o

sound/soc/sh/rcar/Makefile

+snd-soc-rcar-objs	:= core.o gen.o scu.o adg.o ssi.o
+obj-$(CONFIG_SND_SOC_RCAR)	+= snd-soc-rcar.o
\ No newline at end of file

sound/soc/sh/rcar/adg.c

+/*
+ * Helper routines for R-Car sound ADG.
+ *
+ *  Copyright (C) 2013  Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ */
+#include <linux/sh_clk.h>
+#include <mach/clock.h>
+#include "rsnd.h"
+
+#define CLKA	0
+#define CLKB	1
+#define CLKC	2
+#define CLKI	3
+#define CLKMAX	4
+
+struct rsnd_adg {
+	struct clk *clk[CLKMAX];
+
+	int rate_of_441khz_div_6;
+	int rate_of_48khz_div_6;
+};
+
+#define for_each_rsnd_clk(pos, adg, i)		\
+	for (i = 0, (pos) = adg->clk[i];	\
+	     i < CLKMAX;			\
+	     i++, (pos) = adg->clk[i])
+#define rsnd_priv_to_adg(priv) ((struct rsnd_adg *)(priv)->adg)
+
+static enum rsnd_reg rsnd_adg_ssi_reg_get(int id)
+{
+	enum rsnd_reg reg;
+
+	/*
+	 * SSI 8 is not connected to ADG.
+	 * it works with SSI 7
+	 */
+	if (id == 8)
+		return RSND_REG_MAX;
+
+	if (0 <= id && id <= 3)
+		reg = RSND_REG_AUDIO_CLK_SEL0;
+	else if (4 <= id && id <= 7)
+		reg = RSND_REG_AUDIO_CLK_SEL1;
+	else
+		reg = RSND_REG_AUDIO_CLK_SEL2;
+
+	return reg;
+}
+
+int rsnd_adg_ssi_clk_stop(struct rsnd_mod *mod)
+{
+	struct rsnd_priv *priv = rsnd_mod_to_priv(mod);
+	enum rsnd_reg reg;
+	int id;
+
+	/*
+	 * "mod" = "ssi" here.
+	 * we can get "ssi id" from mod
+	 */
+	id  = rsnd_mod_id(mod);
+	reg = rsnd_adg_ssi_reg_get(id);
+
+	rsnd_write(priv, mod, reg, 0);
+
+	return 0;
+}
+
+int rsnd_adg_ssi_clk_try_start(struct rsnd_mod *mod, unsigned int rate)
+{
+	struct rsnd_priv *priv = rsnd_mod_to_priv(mod);
+	struct rsnd_adg *adg = rsnd_priv_to_adg(priv);
+	struct device *dev = rsnd_priv_to_dev(priv);
+	struct clk *clk;
+	enum rsnd_reg reg;
+	int id, shift, i;
+	u32 data;
+	int sel_table[] = {
+		[CLKA] = 0x1,
+		[CLKB] = 0x2,
+		[CLKC] = 0x3,
+		[CLKI] = 0x0,
+	};
+
+	dev_dbg(dev, "request clock = %d\n", rate);
+
+	/*
+	 * find suitable clock from
+	 * AUDIO_CLKA/AUDIO_CLKB/AUDIO_CLKC/AUDIO_CLKI.
+	 */
+	data = 0;
+	for_each_rsnd_clk(clk, adg, i) {
+		if (rate == clk_get_rate(clk)) {
+			data = sel_table[i];
+			goto found_clock;
+		}
+	}
+
+	/*
+	 * find 1/6 clock from BRGA/BRGB
+	 */
+	if (rate == adg->rate_of_441khz_div_6) {
+		data = 0x10;
+		goto found_clock;
+	}
+
+	if (rate == adg->rate_of_48khz_div_6) {
+		data = 0x20;
+		goto found_clock;
+	}
+
+	return -EIO;
+
+found_clock:
+
+	/*
+	 * This "mod" = "ssi" here.
+	 * we can get "ssi id" from mod
+	 */
+	id  = rsnd_mod_id(mod);
+	reg = rsnd_adg_ssi_reg_get(id);
+
+	dev_dbg(dev, "ADG: ssi%d selects clk%d = %d", id, i, rate);
+
+	/*
+	 * Enable SSIx clock
+	 */
+	shift = (id % 4) * 8;
+
+	rsnd_bset(priv, mod, reg,
+		   0xFF << shift,
+		   data << shift);
+
+	return 0;
+}
+
+static void rsnd_adg_ssi_clk_init(struct rsnd_priv *priv, struct rsnd_adg *adg)
+{
+	struct clk *clk;
+	unsigned long rate;
+	u32 ckr;
+	int i;
+	int brg_table[] = {
+		[CLKA] = 0x0,
+		[CLKB] = 0x1,
+		[CLKC] = 0x4,
+		[CLKI] = 0x2,
+	};
+
+	/*
+	 * This driver is assuming that AUDIO_CLKA/AUDIO_CLKB/AUDIO_CLKC
+	 * have 44.1kHz or 48kHz base clocks for now.
+	 *
+	 * SSI itself can divide parent clock by 1/1 - 1/16
+	 * So,  BRGA outputs 44.1kHz base parent clock 1/32,
+	 * and, BRGB outputs 48.0kHz base parent clock 1/32 here.
+	 * see
+	 *	rsnd_adg_ssi_clk_try_start()
+	 */
+	ckr = 0;
+	adg->rate_of_441khz_div_6 = 0;
+	adg->rate_of_48khz_div_6  = 0;
+	for_each_rsnd_clk(clk, adg, i) {
+		rate = clk_get_rate(clk);
+
+		if (0 == rate) /* not used */
+			continue;
+
+		/* RBGA */
+		if (!adg->rate_of_441khz_div_6 && (0 == rate % 44100)) {
+			adg->rate_of_441khz_div_6 = rate / 6;
+			ckr |= brg_table[i] << 20;
+		}
+
+		/* RBGB */
+		if (!adg->rate_of_48khz_div_6 && (0 == rate % 48000)) {
+			adg->rate_of_48khz_div_6 = rate / 6;
+			ckr |= brg_table[i] << 16;
+		}
+	}
+
+	rsnd_priv_bset(priv, SSICKR, 0x00FF0000, ckr);
+	rsnd_priv_write(priv, BRRA,  0x00000002); /* 1/6 */
+	rsnd_priv_write(priv, BRRB,  0x00000002); /* 1/6 */
+}
+
+int rsnd_adg_probe(struct platform_device *pdev,
+		   struct rcar_snd_info *info,
+		   struct rsnd_priv *priv)
+{
+	struct rsnd_adg *adg;
+	struct device *dev = rsnd_priv_to_dev(priv);
+	struct clk *clk;
+	int i;
+
+	adg = devm_kzalloc(dev, sizeof(*adg), GFP_KERNEL);
+	if (!adg) {
+		dev_err(dev, "ADG allocate failed\n");
+		return -ENOMEM;
+	}
+
+	adg->clk[CLKA] = clk_get(NULL, "audio_clk_a");
+	adg->clk[CLKB] = clk_get(NULL, "audio_clk_b");
+	adg->clk[CLKC] = clk_get(NULL, "audio_clk_c");
+	adg->clk[CLKI] = clk_get(NULL, "audio_clk_internal");
+	for_each_rsnd_clk(clk, adg, i) {
+		if (IS_ERR(clk)) {
+			dev_err(dev, "Audio clock failed\n");
+			return -EIO;
+		}
+	}
+
+	rsnd_adg_ssi_clk_init(priv, adg);
+
+	priv->adg = adg;
+
+	dev_dbg(dev, "adg probed\n");
+
+	return 0;
+}
+
+void rsnd_adg_remove(struct platform_device *pdev,
+		     struct rsnd_priv *priv)
+{
+	struct rsnd_adg *adg = priv->adg;
+	struct clk *clk;
+	int i;
+
+	for_each_rsnd_clk(clk, adg, i)
+		clk_put(clk);
+}

sound/soc/sh/rcar/gen.c

+/*
+ * Renesas R-Car Gen1 SRU/SSI support
+ *
+ * Copyright (C) 2013 Renesas Solutions Corp.
+ * Kuninori Morimoto <kuninori.morimoto.gx@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.
+ */
+#include "rsnd.h"
+
+struct rsnd_gen_ops {
+	int (*path_init)(struct rsnd_priv *priv,
+			 struct rsnd_dai *rdai,
+			 struct rsnd_dai_stream *io);
+	int (*path_exit)(struct rsnd_priv *priv,
+			 struct rsnd_dai *rdai,
+			 struct rsnd_dai_stream *io);
+};
+
+struct rsnd_gen_reg_map {
+	int index;	/* -1 : not supported */
+	u32 offset_id;	/* offset of ssi0, ssi1, ssi2... */
+	u32 offset_adr;	/* offset of SSICR, SSISR, ... */
+};
+
+struct rsnd_gen {
+	void __iomem *base[RSND_BASE_MAX];
+
+	struct rsnd_gen_reg_map reg_map[RSND_REG_MAX];
+	struct rsnd_gen_ops *ops;
+};
+
+#define rsnd_priv_to_gen(p)	((struct rsnd_gen *)(p)->gen)
+
+/*
+ *		Gen2
+ *		will be filled in the future
+ */
+
+/*
+ *		Gen1
+ */
+static int rsnd_gen1_path_init(struct rsnd_priv *priv,
+			       struct rsnd_dai *rdai,
+			       struct rsnd_dai_stream *io)
+{
+	struct rsnd_mod *mod;
+	int ret;
+	int id;
+
+	/*
+	 * Gen1 is created by SRU/SSI, and this SRU is base module of
+	 * Gen2's SCU/SSIU/SSI. (Gen2 SCU/SSIU came from SRU)
+	 *
+	 * Easy image is..
+	 *	Gen1 SRU = Gen2 SCU + SSIU + etc
+	 *
+	 * Gen2 SCU path is very flexible, but, Gen1 SRU (SCU parts) is
+	 * using fixed path.
+	 *
+	 * Then, SSI id = SCU id here
+	 */
+
+	/* get SSI's ID */
+	mod = rsnd_ssi_mod_get_frm_dai(priv,
+				       rsnd_dai_id(priv, rdai),
+				       rsnd_dai_is_play(rdai, io));
+	id = rsnd_mod_id(mod);
+
+	/* SSI */
+	mod = rsnd_ssi_mod_get(priv, id);
+	ret = rsnd_dai_connect(rdai, mod, io);
+	if (ret < 0)
+		return ret;
+
+	/* SCU */
+	mod = rsnd_scu_mod_get(priv, id);
+	ret = rsnd_dai_connect(rdai, mod, io);
+
+	return ret;
+}
+
+static int rsnd_gen1_path_exit(struct rsnd_priv *priv,
+			       struct rsnd_dai *rdai,
+			       struct rsnd_dai_stream *io)
+{
+	struct rsnd_mod *mod, *n;
+	int ret = 0;
+
+	/*
+	 * remove all mod from rdai
+	 */
+	for_each_rsnd_mod(mod, n, io)
+		ret |= rsnd_dai_disconnect(mod);
+
+	return ret;
+}
+
+static struct rsnd_gen_ops rsnd_gen1_ops = {
+	.path_init	= rsnd_gen1_path_init,
+	.path_exit	= rsnd_gen1_path_exit,
+};
+
+#define RSND_GEN1_REG_MAP(g, s, i, oi, oa)				\
+	do {								\
+		(g)->reg_map[RSND_REG_##i].index  = RSND_GEN1_##s;	\
+		(g)->reg_map[RSND_REG_##i].offset_id = oi;		\
+		(g)->reg_map[RSND_REG_##i].offset_adr = oa;		\
+	} while (0)
+
+static void rsnd_gen1_reg_map_init(struct rsnd_gen *gen)
+{
+	RSND_GEN1_REG_MAP(gen, SRU,	SRC_ROUTE_SEL,	0x0,	0x00);
+	RSND_GEN1_REG_MAP(gen, SRU,	SRC_TMG_SEL0,	0x0,	0x08);
+	RSND_GEN1_REG_MAP(gen, SRU,	SRC_TMG_SEL1,	0x0,	0x0c);
+	RSND_GEN1_REG_MAP(gen, SRU,	SRC_TMG_SEL2,	0x0,	0x10);
+	RSND_GEN1_REG_MAP(gen, SRU,	SRC_CTRL,	0x0,	0xc0);
+	RSND_GEN1_REG_MAP(gen, SRU,	SSI_MODE0,	0x0,	0xD0);
+	RSND_GEN1_REG_MAP(gen, SRU,	SSI_MODE1,	0x0,	0xD4);
+	RSND_GEN1_REG_MAP(gen, SRU,	BUSIF_MODE,	0x4,	0x20);
+	RSND_GEN1_REG_MAP(gen, SRU,	BUSIF_ADINR,	0x40,	0x214);
+
+	RSND_GEN1_REG_MAP(gen, ADG,	BRRA,		0x0,	0x00);
+	RSND_GEN1_REG_MAP(gen, ADG,	BRRB,		0x0,	0x04);
+	RSND_GEN1_REG_MAP(gen, ADG,	SSICKR,		0x0,	0x08);
+	RSND_GEN1_REG_MAP(gen, ADG,	AUDIO_CLK_SEL0,	0x0,	0x0c);
+	RSND_GEN1_REG_MAP(gen, ADG,	AUDIO_CLK_SEL1,	0x0,	0x10);
+	RSND_GEN1_REG_MAP(gen, ADG,	AUDIO_CLK_SEL3,	0x0,	0x18);
+	RSND_GEN1_REG_MAP(gen, ADG,	AUDIO_CLK_SEL4,	0x0,	0x1c);
+	RSND_GEN1_REG_MAP(gen, ADG,	AUDIO_CLK_SEL5,	0x0,	0x20);
+
+	RSND_GEN1_REG_MAP(gen, SSI,	SSICR,		0x40,	0x00);
+	RSND_GEN1_REG_MAP(gen, SSI,	SSISR,		0x40,	0x04);
+	RSND_GEN1_REG_MAP(gen, SSI,	SSITDR,		0x40,	0x08);
+	RSND_GEN1_REG_MAP(gen, SSI,	SSIRDR,		0x40,	0x0c);
+	RSND_GEN1_REG_MAP(gen, SSI,	SSIWSR,		0x40,	0x20);
+}
+
+static int rsnd_gen1_probe(struct platform_device *pdev,
+			   struct rcar_snd_info *info,
+			   struct rsnd_priv *priv)
+{
+	struct device *dev = rsnd_priv_to_dev(priv);
+	struct rsnd_gen *gen = rsnd_priv_to_gen(priv);
+	struct resource *sru_res;
+	struct resource *adg_res;
+	struct resource *ssi_res;
+
+	/*
+	 * map address
+	 */
+	sru_res	= platform_get_resource(pdev, IORESOURCE_MEM, RSND_GEN1_SRU);
+	adg_res = platform_get_resource(pdev, IORESOURCE_MEM, RSND_GEN1_ADG);
+	ssi_res	= platform_get_resource(pdev, IORESOURCE_MEM, RSND_GEN1_SSI);
+
+	gen->base[RSND_GEN1_SRU] = devm_ioremap_resource(dev, sru_res);
+	gen->base[RSND_GEN1_ADG] = devm_ioremap_resource(dev, adg_res);
+	gen->base[RSND_GEN1_SSI] = devm_ioremap_resource(dev, ssi_res);
+	if (IS_ERR(gen->base[RSND_GEN1_SRU]) ||
+	    IS_ERR(gen->base[RSND_GEN1_ADG]) ||
+	    IS_ERR(gen->base[RSND_GEN1_SSI]))
+		return -ENODEV;
+
+	gen->ops = &rsnd_gen1_ops;
+	rsnd_gen1_reg_map_init(gen);
+
+	dev_dbg(dev, "Gen1 device probed\n");
+	dev_dbg(dev, "SRU : %08x => %p\n",	sru_res->start,
+						gen->base[RSND_GEN1_SRU]);
+	dev_dbg(dev, "ADG : %08x => %p\n",	adg_res->start,
+						gen->base[RSND_GEN1_ADG]);
+	dev_dbg(dev, "SSI : %08x => %p\n",	ssi_res->start,
+						gen->base[RSND_GEN1_SSI]);
+
+	return 0;
+
+}
+
+static void rsnd_gen1_remove(struct platform_device *pdev,
+			     struct rsnd_priv *priv)
+{
+}
+
+/*
+ *		Gen
+ */
+int rsnd_gen_path_init(struct rsnd_priv *priv,
+		       struct rsnd_dai *rdai,
+		       struct rsnd_dai_stream *io)
+{
+	struct rsnd_gen *gen = rsnd_priv_to_gen(priv);
+
+	return gen->ops->path_init(priv, rdai, io);
+}
+
+int rsnd_gen_path_exit(struct rsnd_priv *priv,
+		       struct rsnd_dai *rdai,
+		       struct rsnd_dai_stream *io)
+{
+	struct rsnd_gen *gen = rsnd_priv_to_gen(priv);
+
+	return gen->ops->path_exit(priv, rdai, io);
+}
+
+void __iomem *rsnd_gen_reg_get(struct rsnd_priv *priv,
+			       struct rsnd_mod *mod,
+			       enum rsnd_reg reg)
+{
+	struct rsnd_gen *gen = rsnd_priv_to_gen(priv);
+	struct device *dev = rsnd_priv_to_dev(priv);
+	int index;
+	u32 offset_id, offset_adr;
+
+	if (reg >= RSND_REG_MAX) {
+		dev_err(dev, "rsnd_reg reg error\n");
+		return NULL;
+	}
+
+	index		= gen->reg_map[reg].index;
+	offset_id	= gen->reg_map[reg].offset_id;
+	offset_adr	= gen->reg_map[reg].offset_adr;
+
+	if (index < 0) {
+		dev_err(dev, "unsupported reg access %d\n", reg);
+		return NULL;
+	}
+
+	if (offset_id && mod)
+		offset_id *= rsnd_mod_id(mod);
+
+	/*
+	 * index/offset were set on gen1/gen2
+	 */
+
+	return gen->base[index] + offset_id + offset_adr;
+}
+
+int rsnd_gen_probe(struct platform_device *pdev,
+		   struct rcar_snd_info *info,
+		   struct rsnd_priv *priv)
+{
+	struct device *dev = rsnd_priv_to_dev(priv);
+	struct rsnd_gen *gen;
+	int i;
+
+	gen = devm_kzalloc(dev, sizeof(*gen), GFP_KERNEL);
+	if (!gen) {
+		dev_err(dev, "GEN allocate failed\n");
+		return -ENOMEM;
+	}
+
+	priv->gen = gen;
+
+	/*
+	 * see
+	 *	rsnd_reg_get()
+	 *	rsnd_gen_probe()
+	 */
+	for (i = 0; i < RSND_REG_MAX; i++)
+		gen->reg_map[i].index = -1;
+
+	/*
+	 *	init each module
+	 */
+	if (rsnd_is_gen1(priv))
+		return rsnd_gen1_probe(pdev, info, priv);
+
+	dev_err(dev, "unknown generation R-Car sound device\n");
+
+	return -ENODEV;
+}
+
+void rsnd_gen_remove(struct platform_device *pdev,
+		     struct rsnd_priv *priv)
+{
+	if (rsnd_is_gen1(priv))
+		rsnd_gen1_remove(pdev, priv);
+}

sound/soc/sh/rcar/rsnd.h

+/*
+ * Renesas R-Car
+ *
+ * Copyright (C) 2013 Renesas Solutions Corp.
+ * Kuninori Morimoto <kuninori.morimoto.gx@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.
+ */
+#ifndef RSND_H
+#define RSND_H
+
+#include <linux/clk.h>
+#include <linux/device.h>
+#include <linux/dma-mapping.h>
+#include <linux/io.h>
+#include <linux/list.h>
+#include <linux/module.h>
+#include <linux/sh_dma.h>
+#include <linux/workqueue.h>
+#include <sound/rcar_snd.h>
+#include <sound/soc.h>
+#include <sound/pcm_params.h>
+
+/*
+ *	pseudo register
+ *
+ * The register address offsets SRU/SCU/SSIU on Gen1/Gen2 are very different.
+ * This driver uses pseudo register in order to hide it.
+ * see gen1/gen2 for detail
+ */
+enum rsnd_reg {
+	/* SRU/SCU */
+	RSND_REG_SRC_ROUTE_SEL,
+	RSND_REG_SRC_TMG_SEL0,
+	RSND_REG_SRC_TMG_SEL1,
+	RSND_REG_SRC_TMG_SEL2,
+	RSND_REG_SRC_CTRL,
+	RSND_REG_SSI_MODE0,
+	RSND_REG_SSI_MODE1,
+	RSND_REG_BUSIF_MODE,
+	RSND_REG_BUSIF_ADINR,
+
+	/* ADG */
+	RSND_REG_BRRA,
+	RSND_REG_BRRB,
+	RSND_REG_SSICKR,
+	RSND_REG_AUDIO_CLK_SEL0,
+	RSND_REG_AUDIO_CLK_SEL1,
+	RSND_REG_AUDIO_CLK_SEL2,
+	RSND_REG_AUDIO_CLK_SEL3,
+	RSND_REG_AUDIO_CLK_SEL4,
+	RSND_REG_AUDIO_CLK_SEL5,
+
+	/* SSI */
+	RSND_REG_SSICR,
+	RSND_REG_SSISR,
+	RSND_REG_SSITDR,
+	RSND_REG_SSIRDR,
+	RSND_REG_SSIWSR,
+
+	RSND_REG_MAX,
+};
+
+struct rsnd_priv;
+struct rsnd_mod;
+struct rsnd_dai;
+struct rsnd_dai_stream;
+
+/*
+ *	R-Car basic functions
+ */
+#define rsnd_mod_read(m, r) \
+	rsnd_read(rsnd_mod_to_priv(m), m, RSND_REG_##r)
+#define rsnd_mod_write(m, r, d) \
+	rsnd_write(rsnd_mod_to_priv(m), m, RSND_REG_##r, d)
+#define rsnd_mod_bset(m, r, s, d) \
+	rsnd_bset(rsnd_mod_to_priv(m), m, RSND_REG_##r, s, d)
+
+#define rsnd_priv_read(p, r)		rsnd_read(p, NULL, RSND_REG_##r)
+#define rsnd_priv_write(p, r, d)	rsnd_write(p, NULL, RSND_REG_##r, d)
+#define rsnd_priv_bset(p, r, s, d)	rsnd_bset(p, NULL, RSND_REG_##r, s, d)
+
+u32 rsnd_read(struct rsnd_priv *priv, struct rsnd_mod *mod, enum rsnd_reg reg);
+void rsnd_write(struct rsnd_priv *priv, struct rsnd_mod *mod,
+		enum rsnd_reg reg, u32 data);
+void rsnd_bset(struct rsnd_priv *priv, struct rsnd_mod *mod, enum rsnd_reg reg,
+		    u32 mask, u32 data);
+
+/*
+ *	R-Car DMA
+ */
+struct rsnd_dma {
+	struct rsnd_priv	*priv;
+	struct sh_dmae_slave	slave;
+	struct work_struct	work;
+	struct dma_chan		*chan;
+	enum dma_data_direction dir;
+	int (*inquiry)(struct rsnd_dma *dma, dma_addr_t *buf, int *len);
+	int (*complete)(struct rsnd_dma *dma);
+
+	int submit_loop;
+};
+
+void rsnd_dma_start(struct rsnd_dma *dma);
+void rsnd_dma_stop(struct rsnd_dma *dma);
+int rsnd_dma_available(struct rsnd_dma *dma);
+int rsnd_dma_init(struct rsnd_priv *priv, struct rsnd_dma *dma,
+	int is_play, int id,
+	int (*inquiry)(struct rsnd_dma *dma, dma_addr_t *buf, int *len),
+	int (*complete)(struct rsnd_dma *dma));
+void  rsnd_dma_quit(struct rsnd_priv *priv,
+		    struct rsnd_dma *dma);
+
+
+/*
+ *	R-Car sound mod
+ */
+
+struct rsnd_mod_ops {
+	char *name;
+	int (*init)(struct rsnd_mod *mod,
+		    struct rsnd_dai *rdai,
+		    struct rsnd_dai_stream *io);
+	int (*quit)(struct rsnd_mod *mod,
+		    struct rsnd_dai *rdai,
+		    struct rsnd_dai_stream *io);
+	int (*start)(struct rsnd_mod *mod,
+		     struct rsnd_dai *rdai,
+		     struct rsnd_dai_stream *io);
+	int (*stop)(struct rsnd_mod *mod,
+		    struct rsnd_dai *rdai,
+		    struct rsnd_dai_stream *io);
+};
+
+struct rsnd_mod {
+	int id;
+	struct rsnd_priv *priv;
+	struct rsnd_mod_ops *ops;
+	struct list_head list; /* connect to rsnd_dai playback/capture */
+	struct rsnd_dma dma;
+};
+
+#define rsnd_mod_to_priv(mod) ((mod)->priv)
+#define rsnd_mod_to_dma(mod) (&(mod)->dma)
+#define rsnd_dma_to_mod(_dma) container_of((_dma), struct rsnd_mod, dma)
+#define rsnd_mod_id(mod) ((mod)->id)
+#define for_each_rsnd_mod(pos, n, io)	\
+	list_for_each_entry_safe(pos, n, &(io)->head, list)
+#define rsnd_mod_call(mod, func, rdai, io)	\
+	(!(mod) ? -ENODEV :			\
+	 !((mod)->ops->func) ? 0 :		\
+	 (mod)->ops->func(mod, rdai, io))
+
+void rsnd_mod_init(struct rsnd_priv *priv,
+		   struct rsnd_mod *mod,
+		   struct rsnd_mod_ops *ops,
+		   int id);
+char *rsnd_mod_name(struct rsnd_mod *mod);
+
+/*
+ *	R-Car sound DAI
+ */
+#define RSND_DAI_NAME_SIZE	16
+struct rsnd_dai_stream {
+	struct list_head head; /* head of rsnd_mod list */
+	struct snd_pcm_substream *substream;
+	int byte_pos;
+	int period_pos;
+	int byte_per_period;
+	int next_period_byte;
+};
+
+struct rsnd_dai {
+	char name[RSND_DAI_NAME_SIZE];
+	struct rsnd_dai_platform_info *info; /* rcar_snd.h */
+	struct rsnd_dai_stream playback;
+	struct rsnd_dai_stream capture;
+
+	int clk_master:1;
+	int bit_clk_inv:1;
+	int frm_clk_inv:1;
+	int sys_delay:1;
+	int data_alignment:1;
+};
+
+#define rsnd_dai_nr(priv) ((priv)->dai_nr)
+#define for_each_rsnd_dai(rdai, priv, i)		\
+	for (i = 0, (rdai) = rsnd_dai_get(priv, i);	\
+	     i < rsnd_dai_nr(priv);			\
+	     i++, (rdai) = rsnd_dai_get(priv, i))
+
+struct rsnd_dai *rsnd_dai_get(struct rsnd_priv *priv, int id);
+int rsnd_dai_disconnect(struct rsnd_mod *mod);
+int rsnd_dai_connect(struct rsnd_dai *rdai, struct rsnd_mod *mod,
+		     struct rsnd_dai_stream *io);
+int rsnd_dai_is_play(struct rsnd_dai *rdai, struct rsnd_dai_stream *io);
+int rsnd_dai_id(struct rsnd_priv *priv, struct rsnd_dai *rdai);
+#define rsnd_dai_get_platform_info(rdai) ((rdai)->info)
+#define rsnd_io_to_runtime(io) ((io)->substream->runtime)
+
+void rsnd_dai_pointer_update(struct rsnd_dai_stream *io, int cnt);
+int rsnd_dai_pointer_offset(struct rsnd_dai_stream *io, int additional);
+
+/*
+ *	R-Car Gen1/Gen2
+ */
+int rsnd_gen_probe(struct platform_device *pdev,
+		   struct rcar_snd_info *info,
+		   struct rsnd_priv *priv);
+void rsnd_gen_remove(struct platform_device *pdev,
+		     struct rsnd_priv *priv);
+int rsnd_gen_path_init(struct rsnd_priv *priv,
+		       struct rsnd_dai *rdai,
+		       struct rsnd_dai_stream *io);
+int rsnd_gen_path_exit(struct rsnd_priv *priv,
+		       struct rsnd_dai *rdai,
+		       struct rsnd_dai_stream *io);
+void __iomem *rsnd_gen_reg_get(struct rsnd_priv *priv,
+			       struct rsnd_mod *mod,
+			       enum rsnd_reg reg);
+#define rsnd_is_gen1(s)		((s)->info->flags & RSND_GEN1)
+#define rsnd_is_gen2(s)		((s)->info->flags & RSND_GEN2)
+
+/*
+ *	R-Car ADG
+ */
+int rsnd_adg_ssi_clk_stop(struct rsnd_mod *mod);
+int rsnd_adg_ssi_clk_try_start(struct rsnd_mod *mod, unsigned int rate);
+int rsnd_adg_probe(struct platform_device *pdev,
+		   struct rcar_snd_info *info,
+		   struct rsnd_priv *priv);
+void rsnd_adg_remove(struct platform_device *pdev,
+		   struct rsnd_priv *priv);
+
+/*
+ *	R-Car sound priv
+ */
+struct rsnd_priv {
+
+	struct device *dev;
+	struct rcar_snd_info *info;
+	spinlock_t lock;
+
+	/*
+	 * below value will be filled on rsnd_gen_probe()
+	 */
+	void *gen;
+
+	/*
+	 * below value will be filled on rsnd_scu_probe()
+	 */
+	void *scu;
+	int scu_nr;
+
+	/*
+	 * below value will be filled on rsnd_adg_probe()
+	 */
+	void *adg;
+
+	/*
+	 * below value will be filled on rsnd_ssi_probe()
+	 */
+	void *ssiu;
+
+	/*
+	 * below value will be filled on rsnd_dai_probe()
+	 */
+	struct snd_soc_dai_driver *daidrv;
+	struct rsnd_dai *rdai;
+	int dai_nr;
+};
+
+#define rsnd_priv_to_dev(priv)	((priv)->dev)
+#define rsnd_lock(priv, flags) spin_lock_irqsave(&priv->lock, flags)
+#define rsnd_unlock(priv, flags) spin_unlock_irqrestore(&priv->lock, flags)
+
+/*
+ *	R-Car SCU
+ */
+int rsnd_scu_probe(struct platform_device *pdev,
+		   struct rcar_snd_info *info,
+		   struct rsnd_priv *priv);
+void rsnd_scu_remove(struct platform_device *pdev,
+		     struct rsnd_priv *priv);
+struct rsnd_mod *rsnd_scu_mod_get(struct rsnd_priv *priv, int id);
+#define rsnd_scu_nr(priv) ((priv)->scu_nr)
+
+/*
+ *	R-Car SSI
+ */
+int rsnd_ssi_probe(struct platform_device *pdev,
+		   struct rcar_snd_info *info,
+		   struct rsnd_priv *priv);
+void rsnd_ssi_remove(struct platform_device *pdev,
+		   struct rsnd_priv *priv);
+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);
+
+#endif

sound/soc/sh/rcar/scu.c

+/*
+ * Renesas R-Car SCU support
+ *
+ * Copyright (C) 2013 Renesas Solutions Corp.
+ * Kuninori Morimoto <kuninori.morimoto.gx@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.
+ */
+#include "rsnd.h"
+
+struct rsnd_scu {
+	struct rsnd_scu_platform_info *info; /* rcar_snd.h */
+	struct rsnd_mod mod;
+};
+
+#define rsnd_scu_mode_flags(p) ((p)->info->flags)
+
+/*
+ * ADINR
+ */
+#define OTBL_24		(0 << 16)
+#define OTBL_22		(2 << 16)
+#define OTBL_20		(4 << 16)
+#define OTBL_18		(6 << 16)
+#define OTBL_16		(8 << 16)
+
+
+#define rsnd_mod_to_scu(_mod)	\
+	container_of((_mod), struct rsnd_scu, mod)
+
+#define for_each_rsnd_scu(pos, priv, i)					\
+	for ((i) = 0;							\
+	     ((i) < rsnd_scu_nr(priv)) &&				\
+		     ((pos) = (struct rsnd_scu *)(priv)->scu + i);	\
+	     i++)
+
+static int rsnd_scu_set_route(struct rsnd_priv *priv,
+			      struct rsnd_mod *mod,
+			      struct rsnd_dai *rdai,
+			      struct rsnd_dai_stream *io)
+{
+	struct scu_route_config {
+		u32 mask;
+		int shift;
+	} routes[] = {
+		{ 0xF,  0, }, /* 0 */
+		{ 0xF,  4, }, /* 1 */
+		{ 0xF,  8, }, /* 2 */
+		{ 0x7, 12, }, /* 3 */
+		{ 0x7, 16, }, /* 4 */
+		{ 0x7, 20, }, /* 5 */
+		{ 0x7, 24, }, /* 6 */
+		{ 0x3, 28, }, /* 7 */
+		{ 0x3, 30, }, /* 8 */
+	};
+
+	u32 mask;
+	u32 val;
+	int shift;
+	int id;
+
+	/*
+	 * Gen1 only
+	 */
+	if (!rsnd_is_gen1(priv))
+		return 0;
+
+	id = rsnd_mod_id(mod);
+	if (id < 0 || id > ARRAY_SIZE(routes))
+		return -EIO;
+
+	/*
+	 * SRC_ROUTE_SELECT
+	 */
+	val = rsnd_dai_is_play(rdai, io) ? 0x1 : 0x2;
+	val = val		<< routes[id].shift;
+	mask = routes[id].mask	<< routes[id].shift;
+
+	rsnd_mod_bset(mod, SRC_ROUTE_SEL, mask, val);
+
+	/*
+	 * SRC_TIMING_SELECT
+	 */
+	shift	= (id % 4) * 8;
+	mask	= 0x1F << shift;
+	if (8 == id) /* SRU8 is very special */
+		val = id << shift;
+	else
+		val = (id + 1) << shift;
+
+	switch (id / 4) {
+	case 0:
+		rsnd_mod_bset(mod, SRC_TMG_SEL0, mask, val);
+		break;
+	case 1:
+		rsnd_mod_bset(mod, SRC_TMG_SEL1, mask, val);
+		break;
+	case 2:
+		rsnd_mod_bset(mod, SRC_TMG_SEL2, mask, val);
+		break;
+	}
+
+	return 0;
+}
+
+static int rsnd_scu_set_mode(struct rsnd_priv *priv,
+			     struct rsnd_mod *mod,
+			     struct rsnd_dai *rdai,
+			     struct rsnd_dai_stream *io)
+{
+	int id = rsnd_mod_id(mod);
+	u32 val;
+
+	if (rsnd_is_gen1(priv)) {
+		val = (1 << id);
+		rsnd_mod_bset(mod, SRC_CTRL, val, val);
+	}
+
+	return 0;
+}
+
+static int rsnd_scu_set_hpbif(struct rsnd_priv *priv,
+			      struct rsnd_mod *mod,
+			      struct rsnd_dai *rdai,
+			      struct rsnd_dai_stream *io)
+{
+	struct snd_pcm_runtime *runtime = rsnd_io_to_runtime(io);
+	u32 adinr = runtime->channels;
+
+	switch (runtime->sample_bits) {
+	case 16:
+		adinr |= OTBL_16;
+		break;
+	case 32:
+		adinr |= OTBL_24;
+		break;
+	default:
+		return -EIO;
+	}
+
+	rsnd_mod_write(mod, BUSIF_MODE, 1);
+	rsnd_mod_write(mod, BUSIF_ADINR, adinr);
+
+	return 0;
+}
+
+static int rsnd_scu_start(struct rsnd_mod *mod,
+			  struct rsnd_dai *rdai,
+			  struct rsnd_dai_stream *io)
+{
+	struct rsnd_priv *priv = rsnd_mod_to_priv(mod);
+	struct rsnd_scu *scu = rsnd_mod_to_scu(mod);
+	struct device *dev = rsnd_priv_to_dev(priv);
+	u32 flags = rsnd_scu_mode_flags(scu);
+	int ret;
+
+	/*
+	 * SCU will be used if it has RSND_SCU_USB_HPBIF flags
+	 */
+	if (!(flags & RSND_SCU_USB_HPBIF)) {
+		/* it use PIO transter */
+		dev_dbg(dev, "%s%d is not used\n",
+			rsnd_mod_name(mod), rsnd_mod_id(mod));
+
+		return 0;
+	}
+
+	/* it use DMA transter */
+	ret = rsnd_scu_set_route(priv, mod, rdai, io);
+	if (ret < 0)
+		return ret;
+
+	ret = rsnd_scu_set_mode(priv, mod, rdai, io);
+	if (ret < 0)
+		return ret;
+
+	ret = rsnd_scu_set_hpbif(priv, mod, rdai, io);
+	if (ret < 0)
+		return ret;
+
+	dev_dbg(dev, "%s%d start\n", rsnd_mod_name(mod), rsnd_mod_id(mod));
+
+	return 0;
+}
+
+static struct rsnd_mod_ops rsnd_scu_ops = {
+	.name	= "scu",
+	.start	= rsnd_scu_start,
+};
+
+struct rsnd_mod *rsnd_scu_mod_get(struct rsnd_priv *priv, int id)
+{
+	BUG_ON(id < 0 || id >= rsnd_scu_nr(priv));
+
+	return &((struct rsnd_scu *)(priv->scu) + id)->mod;
+}
+
+int rsnd_scu_probe(struct platform_device *pdev,
+		   struct rcar_snd_info *info,
+		   struct rsnd_priv *priv)
+{
+	struct device *dev = rsnd_priv_to_dev(priv);
+	struct rsnd_scu *scu;
+	int i, nr;
+
+	/*
+	 * init SCU
+	 */
+	nr	= info->scu_info_nr;
+	scu	= devm_kzalloc(dev, sizeof(*scu) * nr, GFP_KERNEL);
+	if (!scu) {
+		dev_err(dev, "SCU allocate failed\n");
+		return -ENOMEM;
+	}
+
+	priv->scu_nr	= nr;
+	priv->scu	= scu;
+
+	for_each_rsnd_scu(scu, priv, i) {
+		rsnd_mod_init(priv, &scu->mod,
+			      &rsnd_scu_ops, i);
+		scu->info = &info->scu_info[i];
+
+		dev_dbg(dev, "SCU%d probed\n", i);
+	}
+	dev_dbg(dev, "scu probed\n");
+
+	return 0;
+}
+
+void rsnd_scu_remove(struct platform_device *pdev,
+		     struct rsnd_priv *priv)
+{
+}