1 files changed, 289 insertions, 0 deletions
diff --git a/sound/soc/sh/rcar/dvc.c b/sound/soc/sh/rcar/dvc.c
new file mode 100644
index 000000000000..ed0007006899
--- /dev/null
+++ b/sound/soc/sh/rcar/dvc.c
@@ -0,0 +1,289 @@
+/*
+ * Renesas R-Car DVC support
+ *
+ * Copyright (C) 2014 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"
+
+#define RSND_DVC_NAME_SIZE	16
+#define RSND_DVC_VOLUME_MAX	100
+#define RSND_DVC_VOLUME_NUM	2
+
+#define DVC_NAME "dvc"
+
+struct rsnd_dvc {
+	struct rsnd_dvc_platform_info *info; /* rcar_snd.h */
+	struct rsnd_mod mod;
+	struct clk *clk;
+	long volume[RSND_DVC_VOLUME_NUM];
+};
+
+#define rsnd_mod_to_dvc(_mod)	\
+	container_of((_mod), struct rsnd_dvc, mod)
+
+#define for_each_rsnd_dvc(pos, priv, i)				\
+	for ((i) = 0;						\
+	     ((i) < rsnd_dvc_nr(priv)) &&			\
+	     ((pos) = (struct rsnd_dvc *)(priv)->dvc + i);	\
+	     i++)
+
+static void rsnd_dvc_volume_update(struct rsnd_mod *mod)
+{
+	struct rsnd_dvc *dvc = rsnd_mod_to_dvc(mod);
+	u32 max = (0x00800000 - 1);
+	u32 vol[RSND_DVC_VOLUME_NUM];
+	int i;
+
+	for (i = 0; i < RSND_DVC_VOLUME_NUM; i++)
+		vol[i] = max / RSND_DVC_VOLUME_MAX * dvc->volume[i];
+
+	rsnd_mod_write(mod, DVC_VOL0R, vol[0]);
+	rsnd_mod_write(mod, DVC_VOL1R, vol[1]);
+}
+
+static int rsnd_dvc_probe_gen2(struct rsnd_mod *mod,
+			       struct rsnd_dai *rdai)
+{
+	struct rsnd_priv *priv = rsnd_mod_to_priv(mod);
+	struct device *dev = rsnd_priv_to_dev(priv);
+
+	dev_dbg(dev, "%s (Gen2) is probed\n", rsnd_mod_name(mod));
+
+	return 0;
+}
+
+static int rsnd_dvc_init(struct rsnd_mod *dvc_mod,
+			 struct rsnd_dai *rdai)
+{
+	struct rsnd_dvc *dvc = rsnd_mod_to_dvc(dvc_mod);
+	struct rsnd_dai_stream *io = rsnd_mod_to_io(dvc_mod);
+	struct rsnd_priv *priv = rsnd_mod_to_priv(dvc_mod);
+	struct rsnd_mod *src_mod = rsnd_io_to_mod_src(io);
+	struct device *dev = rsnd_priv_to_dev(priv);
+	int dvc_id = rsnd_mod_id(dvc_mod);
+	int src_id = rsnd_mod_id(src_mod);
+	u32 route[] = {
+		[0] = 0x30000,
+		[1] = 0x30001,
+		[2] = 0x40000,
+		[3] = 0x10000,
+		[4] = 0x20000,
+		[5] = 0x40100
+	};
+
+	if (src_id >= ARRAY_SIZE(route)) {
+		dev_err(dev, "DVC%d isn't connected to SRC%d\n", dvc_id, src_id);
+		return -EINVAL;
+	}
+
+	clk_prepare_enable(dvc->clk);
+
+	/*
+	 * fixme
+	 * it doesn't support CTU/MIX
+	 */
+	rsnd_mod_write(dvc_mod, CMD_ROUTE_SLCT, route[src_id]);
+
+	rsnd_mod_write(dvc_mod, DVC_SWRSR, 0);
+	rsnd_mod_write(dvc_mod, DVC_SWRSR, 1);
+
+	rsnd_mod_write(dvc_mod, DVC_DVUIR, 1);
+
+	rsnd_mod_write(dvc_mod, DVC_ADINR, rsnd_get_adinr(dvc_mod));
+
+	/*  enable Volume  */
+	rsnd_mod_write(dvc_mod, DVC_DVUCR, 0x100);
+
+	/* ch0/ch1 Volume */
+	rsnd_dvc_volume_update(dvc_mod);
+
+	rsnd_mod_write(dvc_mod, DVC_DVUIR, 0);
+
+	rsnd_mod_write(dvc_mod, DVC_DVUER, 1);
+
+	rsnd_adg_set_cmd_timsel_gen2(rdai, dvc_mod, io);
+
+	return 0;
+}
+
+static int rsnd_dvc_quit(struct rsnd_mod *mod,
+			 struct rsnd_dai *rdai)
+{
+	struct rsnd_dvc *dvc = rsnd_mod_to_dvc(mod);
+
+	clk_disable_unprepare(dvc->clk);
+
+	return 0;
+}
+
+static int rsnd_dvc_start(struct rsnd_mod *mod,
+			  struct rsnd_dai *rdai)
+{
+	rsnd_mod_write(mod, CMD_CTRL, 0x10);
+
+	return 0;
+}
+
+static int rsnd_dvc_stop(struct rsnd_mod *mod,
+			 struct rsnd_dai *rdai)
+{
+	rsnd_mod_write(mod, CMD_CTRL, 0);
+
+	return 0;
+}
+
+static int rsnd_dvc_volume_info(struct snd_kcontrol *kctrl,
+			       struct snd_ctl_elem_info *uinfo)
+{
+	uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
+	uinfo->count = RSND_DVC_VOLUME_NUM;
+	uinfo->value.integer.min = 0;
+	uinfo->value.integer.max = RSND_DVC_VOLUME_MAX;
+
+	return 0;
+}
+
+static int rsnd_dvc_volume_get(struct snd_kcontrol *kctrl,
+			      struct snd_ctl_elem_value *ucontrol)
+{
+	struct rsnd_mod *mod = snd_kcontrol_chip(kctrl);
+	struct rsnd_dvc *dvc = rsnd_mod_to_dvc(mod);
+	int i;
+
+	for (i = 0; i < RSND_DVC_VOLUME_NUM; i++)
+		ucontrol->value.integer.value[i] = dvc->volume[i];
+
+	return 0;
+}
+
+static int rsnd_dvc_volume_put(struct snd_kcontrol *kctrl,
+			      struct snd_ctl_elem_value *ucontrol)
+{
+	struct rsnd_mod *mod = snd_kcontrol_chip(kctrl);
+	struct rsnd_dvc *dvc = rsnd_mod_to_dvc(mod);
+	int i, change = 0;
+
+	for (i = 0; i < RSND_DVC_VOLUME_NUM; i++) {
+		if (ucontrol->value.integer.value[i] < 0 ||
+		    ucontrol->value.integer.value[i] > RSND_DVC_VOLUME_MAX)
+			return -EINVAL;
+
+		change |= (ucontrol->value.integer.value[i] != dvc->volume[i]);
+	}
+
+	if (change) {
+		for (i = 0; i < RSND_DVC_VOLUME_NUM; i++)
+			dvc->volume[i] = ucontrol->value.integer.value[i];
+
+		rsnd_dvc_volume_update(mod);
+	}
+
+	return change;
+}
+
+static int rsnd_dvc_pcm_new(struct rsnd_mod *mod,
+			    struct rsnd_dai *rdai,
+			    struct snd_soc_pcm_runtime *rtd)
+{
+	struct rsnd_dai_stream *io = rsnd_mod_to_io(mod);
+	struct rsnd_priv *priv = rsnd_mod_to_priv(mod);
+	struct device *dev = rsnd_priv_to_dev(priv);
+	struct snd_card *card = rtd->card->snd_card;
+	struct snd_kcontrol *kctrl;
+	static struct snd_kcontrol_new knew = {
+		.iface		= SNDRV_CTL_ELEM_IFACE_MIXER,
+		.name		= "Playback Volume",
+		.info		= rsnd_dvc_volume_info,
+		.get		= rsnd_dvc_volume_get,
+		.put		= rsnd_dvc_volume_put,
+	};
+	int ret;
+
+	if (!rsnd_dai_is_play(rdai, io)) {
+		dev_err(dev, "DVC%d is connected to Capture DAI\n",
+			rsnd_mod_id(mod));
+		return -EINVAL;
+	}
+
+	kctrl = snd_ctl_new1(&knew, mod);
+	if (!kctrl)
+		return -ENOMEM;
+
+	ret = snd_ctl_add(card, kctrl);
+	if (ret < 0)
+		return ret;
+
+	return 0;
+}
+
+static struct rsnd_mod_ops rsnd_dvc_ops = {
+	.name		= DVC_NAME,
+	.probe		= rsnd_dvc_probe_gen2,
+	.init		= rsnd_dvc_init,
+	.quit		= rsnd_dvc_quit,
+	.start		= rsnd_dvc_start,
+	.stop		= rsnd_dvc_stop,
+	.pcm_new	= rsnd_dvc_pcm_new,
+};
+
+struct rsnd_mod *rsnd_dvc_mod_get(struct rsnd_priv *priv, int id)
+{
+	if (WARN_ON(id < 0 || id >= rsnd_dvc_nr(priv)))
+		id = 0;
+
+	return &((struct rsnd_dvc *)(priv->dvc) + id)->mod;
+}
+
+int rsnd_dvc_probe(struct platform_device *pdev,
+		   const struct rsnd_of_data *of_data,
+		   struct rsnd_priv *priv)
+{
+	struct rcar_snd_info *info = rsnd_priv_to_info(priv);
+	struct device *dev = rsnd_priv_to_dev(priv);
+	struct rsnd_dvc *dvc;
+	struct clk *clk;
+	char name[RSND_DVC_NAME_SIZE];
+	int i, nr;
+
+	nr = info->dvc_info_nr;
+	if (!nr)
+		return 0;
+
+	/* This driver doesn't support Gen1 at this point */
+	if (rsnd_is_gen1(priv)) {
+		dev_warn(dev, "CMD is not supported on Gen1\n");
+		return -EINVAL;
+	}
+
+	dvc	= devm_kzalloc(dev, sizeof(*dvc) * nr, GFP_KERNEL);
+	if (!dvc) {
+		dev_err(dev, "CMD allocate failed\n");
+		return -ENOMEM;
+	}
+
+	priv->dvc_nr	= nr;
+	priv->dvc	= dvc;
+
+	for_each_rsnd_dvc(dvc, priv, i) {
+		snprintf(name, RSND_DVC_NAME_SIZE, "%s.%d",
+			 DVC_NAME, i);
+
+		clk = devm_clk_get(dev, name);
+		if (IS_ERR(clk))
+			return PTR_ERR(clk);
+
+		dvc->info = &info->dvc_info[i];
+		dvc->clk  = clk;
+
+		rsnd_mod_init(priv, &dvc->mod, &rsnd_dvc_ops, RSND_MOD_DVC, i);
+
+		dev_dbg(dev, "CMD%d probed\n", i);
+	}
+
+	return 0;
+}