3 files changed, 221 insertions, 2 deletions

diff --git a/sound/soc/sh/rcar/core.c b/sound/soc/sh/rcar/core.c
index 9beea9ba338a..3b6e21948c71 100644
--- a/sound/soc/sh/rcar/core.c
+++ b/sound/soc/sh/rcar/core.c
@@ -974,6 +974,7 @@ static int rsnd_probe(struct platform_device *pdev)
 			    const struct rsnd_of_data *of_data,
 			    struct rsnd_priv *priv) = {
 		rsnd_gen_probe,
+		rsnd_dma_probe,
 		rsnd_ssi_probe,
 		rsnd_src_probe,
 		rsnd_dvc_probe,
diff --git a/sound/soc/sh/rcar/dma.c b/sound/soc/sh/rcar/dma.c
index c911c079fdd0..a01bb8c6b068 100644
--- a/sound/soc/sh/rcar/dma.c
+++ b/sound/soc/sh/rcar/dma.c
@@ -8,8 +8,29 @@
  * it under the terms of the GNU General Public License version 2 as
  * published by the Free Software Foundation.
  */
+#include <linux/delay.h>
 #include "rsnd.h"
 
+/*
+ * Audio DMAC peri peri register
+ */
+#define PDMASAR		0x00
+#define PDMADAR		0x04
+#define PDMACHCR	0x0c
+
+/* PDMACHCR */
+#define PDMACHCR_DE		(1 << 0)
+
+struct rsnd_dma_ctrl {
+	void __iomem *base;
+	int dmapp_num;
+};
+
+#define rsnd_priv_to_dmac(p)	((struct rsnd_dma_ctrl *)(p)->dma)
+
+/*
+ *		Audio DMAC
+ */
 static void rsnd_dmaen_complete(void *data)
 {
 	struct rsnd_dma *dma = (struct rsnd_dma *)data;
@@ -108,6 +129,8 @@ static int rsnd_dmaen_init(struct rsnd_priv *priv, struct rsnd_dma *dma, int id,
 		return -EIO;
 	}
 
+	dev_dbg(dev, "Audio DMAC init\n");
+
 	dma_cap_zero(mask);
 	dma_cap_set(DMA_SLAVE, mask);
 
@@ -168,6 +191,150 @@ static struct rsnd_dma_ops rsnd_dmaen_ops = {
 };
 
 /*
+ *		Audio DMAC peri peri
+ */
+static const u8 gen2_id_table_ssiu[] = {
+	0x00, /* SSI00 */
+	0x04, /* SSI10 */
+	0x08, /* SSI20 */
+	0x0c, /* SSI3  */
+	0x0d, /* SSI4  */
+	0x0e, /* SSI5  */
+	0x0f, /* SSI6  */
+	0x10, /* SSI7  */
+	0x11, /* SSI8  */
+	0x12, /* SSI90 */
+};
+static const u8 gen2_id_table_scu[] = {
+	0x2d, /* SCU_SRCI0 */
+	0x2e, /* SCU_SRCI1 */
+	0x2f, /* SCU_SRCI2 */
+	0x30, /* SCU_SRCI3 */
+	0x31, /* SCU_SRCI4 */
+	0x32, /* SCU_SRCI5 */
+	0x33, /* SCU_SRCI6 */
+	0x34, /* SCU_SRCI7 */
+	0x35, /* SCU_SRCI8 */
+	0x36, /* SCU_SRCI9 */
+};
+static const u8 gen2_id_table_cmd[] = {
+	0x37, /* SCU_CMD0 */
+	0x38, /* SCU_CMD1 */
+};
+
+static u32 rsnd_dmapp_get_id(struct rsnd_mod *mod)
+{
+	struct rsnd_dai_stream *io = rsnd_mod_to_io(mod);
+	struct rsnd_mod *ssi = rsnd_io_to_mod_ssi(io);
+	struct rsnd_mod *src = rsnd_io_to_mod_src(io);
+	struct rsnd_mod *dvc = rsnd_io_to_mod_dvc(io);
+	const u8 *entry = NULL;
+	int id = rsnd_mod_id(mod);
+	int size = 0;
+
+	if (mod == ssi) {
+		entry = gen2_id_table_ssiu;
+		size = ARRAY_SIZE(gen2_id_table_ssiu);
+	} else if (mod == src) {
+		entry = gen2_id_table_scu;
+		size = ARRAY_SIZE(gen2_id_table_scu);
+	} else if (mod == dvc) {
+		entry = gen2_id_table_cmd;
+		size = ARRAY_SIZE(gen2_id_table_cmd);
+	}
+
+	if (!entry)
+		return 0xFF;
+
+	if (size <= id)
+		return 0xFF;
+
+	return entry[id];
+}
+
+static u32 rsnd_dmapp_get_chcr(struct rsnd_mod *mod_from,
+			       struct rsnd_mod *mod_to)
+{
+	return	(rsnd_dmapp_get_id(mod_from) << 24) +
+		(rsnd_dmapp_get_id(mod_to) << 16);
+}
+
+#define rsnd_dmapp_addr(dmac, dma, reg) \
+	(dmac->base + 0x20 + (0x10 * dma->dmapp_id) + reg)
+static void rsnd_dmapp_write(struct rsnd_dma *dma, u32 data, u32 reg)
+{
+	struct rsnd_mod *mod = rsnd_dma_to_mod(dma);
+	struct rsnd_priv *priv = rsnd_mod_to_priv(mod);
+	struct rsnd_dma_ctrl *dmac = rsnd_priv_to_dmac(priv);
+	struct device *dev = rsnd_priv_to_dev(priv);
+
+	dev_dbg(dev, "w %p : %08x\n", rsnd_dmapp_addr(dmac, dma, reg), data);
+
+	iowrite32(data, rsnd_dmapp_addr(dmac, dma, reg));
+}
+
+static u32 rsnd_dmapp_read(struct rsnd_dma *dma, u32 reg)
+{
+	struct rsnd_mod *mod = rsnd_dma_to_mod(dma);
+	struct rsnd_priv *priv = rsnd_mod_to_priv(mod);
+	struct rsnd_dma_ctrl *dmac = rsnd_priv_to_dmac(priv);
+
+	return ioread32(rsnd_dmapp_addr(dmac, dma, reg));
+}
+
+static void rsnd_dmapp_stop(struct rsnd_dma *dma)
+{
+	int i;
+
+	rsnd_dmapp_write(dma, 0, PDMACHCR);
+
+	for (i = 0; i < 1024; i++) {
+		if (0 == rsnd_dmapp_read(dma, PDMACHCR))
+			return;
+		udelay(1);
+	}
+}
+
+static void rsnd_dmapp_start(struct rsnd_dma *dma)
+{
+	rsnd_dmapp_write(dma, dma->src_addr,	PDMASAR);
+	rsnd_dmapp_write(dma, dma->dst_addr,	PDMADAR);
+	rsnd_dmapp_write(dma, dma->chcr,	PDMACHCR);
+}
+
+static int rsnd_dmapp_init(struct rsnd_priv *priv, struct rsnd_dma *dma, int id,
+			   struct rsnd_mod *mod_from, struct rsnd_mod *mod_to)
+{
+	struct rsnd_dma_ctrl *dmac = rsnd_priv_to_dmac(priv);
+	struct device *dev = rsnd_priv_to_dev(priv);
+
+	dev_dbg(dev, "Audio DMAC peri peri init\n");
+
+	dma->dmapp_id = dmac->dmapp_num;
+	dma->chcr = rsnd_dmapp_get_chcr(mod_from, mod_to) | PDMACHCR_DE;
+
+	dmac->dmapp_num++;
+
+	rsnd_dmapp_stop(dma);
+
+	dev_dbg(dev, "id/src/dst/chcr = %d/%x/%x/%08x\n",
+		dma->dmapp_id, dma->src_addr, dma->dst_addr, dma->chcr);
+
+	return 0;
+}
+
+static struct rsnd_dma_ops rsnd_dmapp_ops = {
+	.start	= rsnd_dmapp_start,
+	.stop	= rsnd_dmapp_stop,
+	.init	= rsnd_dmapp_init,
+	.quit	= rsnd_dmapp_stop,
+};
+
+/*
+ *		Common DMAC Interface
+ */
+
+/*
  *	DMA read/write register offset
  *
  *	RSND_xxx_I_N	for Audio DMAC input
@@ -367,7 +534,49 @@ int rsnd_dma_init(struct rsnd_priv *priv, struct rsnd_dma *dma, int id)
 	dma->src_addr = rsnd_dma_addr(priv, mod_from, is_play, 1);
 	dma->dst_addr = rsnd_dma_addr(priv, mod_to,   is_play, 0);
 
-	dma->ops = &rsnd_dmaen_ops;
+	/* for Gen2 */
+	if (mod_from && mod_to)
+		dma->ops = &rsnd_dmapp_ops;
+	else
+		dma->ops = &rsnd_dmaen_ops;
+
+	/* for Gen1, overwrite */
+	if (rsnd_is_gen1(priv))
+		dma->ops = &rsnd_dmaen_ops;
 
 	return dma->ops->init(priv, dma, id, mod_from, mod_to);
 }
+
+int rsnd_dma_probe(struct platform_device *pdev,
+		   const struct rsnd_of_data *of_data,
+		   struct rsnd_priv *priv)
+{
+	struct device *dev = rsnd_priv_to_dev(priv);
+	struct rsnd_dma_ctrl *dmac;
+	struct resource *res;
+
+	/*
+	 * for Gen1
+	 */
+	if (rsnd_is_gen1(priv))
+		return 0;
+
+	/*
+	 * for Gen2
+	 */
+	res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "audmapp");
+	dmac = devm_kzalloc(dev, sizeof(*dmac), GFP_KERNEL);
+	if (!dmac || !res) {
+		dev_err(dev, "dma allocate failed\n");
+		return -ENOMEM;
+	}
+
+	dmac->dmapp_num = 0;
+	dmac->base = devm_ioremap_resource(dev, res);
+	if (IS_ERR(dmac->base))
+		return PTR_ERR(dmac->base);
+
+	priv->dma = dmac;
+
+	return 0;
+}
diff --git a/sound/soc/sh/rcar/rsnd.h b/sound/soc/sh/rcar/rsnd.h
index c7299f74cf83..9e67142c82bd 100644
--- a/sound/soc/sh/rcar/rsnd.h
+++ b/sound/soc/sh/rcar/rsnd.h
@@ -184,6 +184,8 @@ struct rsnd_dma {
 	struct rsnd_dma_ops	*ops;
 	enum dma_transfer_direction dir;
 	dma_addr_t		addr;
+	int			dmapp_id;
+	u32			chcr;
 	dma_addr_t		src_addr;
 	dma_addr_t		dst_addr;
 };
@@ -192,7 +194,9 @@ void rsnd_dma_start(struct rsnd_dma *dma);
 void rsnd_dma_stop(struct rsnd_dma *dma);
 int rsnd_dma_init(struct rsnd_priv *priv, struct rsnd_dma *dma, int id);
 void  rsnd_dma_quit(struct rsnd_dma *dma);
-
+int rsnd_dma_probe(struct platform_device *pdev,
+		   const struct rsnd_of_data *of_data,
+		   struct rsnd_priv *priv);
 
 #define rsnd_dma_to_mod(_dma) container_of((_dma), struct rsnd_mod, dma)
 
@@ -396,6 +400,11 @@ struct rsnd_priv {
 	void *adg;
 
 	/*
+	 * below value will be filled on rsnd_dma_probe()
+	 */
+	void *dma;
+
+	/*
 	 * below value will be filled on rsnd_ssi_probe()
 	 */
 	void *ssi;