Linux-libre 4.3.2-gnu

1 files changed, 200 insertions, 0 deletions

diff --git a/sound/soc/sh/rcar/mix.c b/sound/soc/sh/rcar/mix.c
new file mode 100644
index 000000000..0d5c102db
--- /dev/null
+++ b/sound/soc/sh/rcar/mix.c
@@ -0,0 +1,200 @@
+/*
+ * mix.c
+ *
+ * Copyright (c) 2015 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 MIX_NAME_SIZE	16
+#define MIX_NAME "mix"
+
+struct rsnd_mix {
+	struct rsnd_mix_platform_info *info; /* rcar_snd.h */
+	struct rsnd_mod mod;
+};
+
+#define rsnd_mix_nr(priv) ((priv)->mix_nr)
+#define for_each_rsnd_mix(pos, priv, i)					\
+	for ((i) = 0;							\
+	     ((i) < rsnd_mix_nr(priv)) &&				\
+		     ((pos) = (struct rsnd_mix *)(priv)->mix + i);	\
+	     i++)
+
+
+static void rsnd_mix_soft_reset(struct rsnd_mod *mod)
+{
+	rsnd_mod_write(mod, MIX_SWRSR, 0);
+	rsnd_mod_write(mod, MIX_SWRSR, 1);
+}
+
+#define rsnd_mix_initialize_lock(mod)	__rsnd_mix_initialize_lock(mod, 1)
+#define rsnd_mix_initialize_unlock(mod)	__rsnd_mix_initialize_lock(mod, 0)
+static void __rsnd_mix_initialize_lock(struct rsnd_mod *mod, u32 enable)
+{
+	rsnd_mod_write(mod, MIX_MIXIR, enable);
+}
+
+static void rsnd_mix_volume_update(struct rsnd_dai_stream *io,
+				  struct rsnd_mod *mod)
+{
+
+	/* Disable MIX dB setting */
+	rsnd_mod_write(mod, MIX_MDBER, 0);
+
+	rsnd_mod_write(mod, MIX_MDBAR, 0);
+	rsnd_mod_write(mod, MIX_MDBBR, 0);
+	rsnd_mod_write(mod, MIX_MDBCR, 0);
+	rsnd_mod_write(mod, MIX_MDBDR, 0);
+
+	/* Enable MIX dB setting */
+	rsnd_mod_write(mod, MIX_MDBER, 1);
+}
+
+static int rsnd_mix_init(struct rsnd_mod *mod,
+			 struct rsnd_dai_stream *io,
+			 struct rsnd_priv *priv)
+{
+	rsnd_mod_hw_start(mod);
+
+	rsnd_mix_soft_reset(mod);
+
+	rsnd_mix_initialize_lock(mod);
+
+	rsnd_mod_write(mod, MIX_ADINR, rsnd_get_adinr_chan(mod, io));
+
+	rsnd_path_parse(priv, io);
+
+	/* volume step */
+	rsnd_mod_write(mod, MIX_MIXMR, 0);
+	rsnd_mod_write(mod, MIX_MVPDR, 0);
+
+	rsnd_mix_volume_update(io, mod);
+
+	rsnd_mix_initialize_unlock(mod);
+
+	return 0;
+}
+
+static int rsnd_mix_quit(struct rsnd_mod *mod,
+			 struct rsnd_dai_stream *io,
+			 struct rsnd_priv *priv)
+{
+	rsnd_mod_hw_stop(mod);
+
+	return 0;
+}
+
+static struct rsnd_mod_ops rsnd_mix_ops = {
+	.name		= MIX_NAME,
+	.init		= rsnd_mix_init,
+	.quit		= rsnd_mix_quit,
+};
+
+struct rsnd_mod *rsnd_mix_mod_get(struct rsnd_priv *priv, int id)
+{
+	if (WARN_ON(id < 0 || id >= rsnd_mix_nr(priv)))
+		id = 0;
+
+	return &((struct rsnd_mix *)(priv->mix) + id)->mod;
+}
+
+static void rsnd_of_parse_mix(struct platform_device *pdev,
+			      const struct rsnd_of_data *of_data,
+			      struct rsnd_priv *priv)
+{
+	struct device_node *node;
+	struct rsnd_mix_platform_info *mix_info;
+	struct rcar_snd_info *info = rsnd_priv_to_info(priv);
+	struct device *dev = &pdev->dev;
+	int nr;
+
+	if (!of_data)
+		return;
+
+	node = of_get_child_by_name(dev->of_node, "rcar_sound,mix");
+	if (!node)
+		return;
+
+	nr = of_get_child_count(node);
+	if (!nr)
+		goto rsnd_of_parse_mix_end;
+
+	mix_info = devm_kzalloc(dev,
+				sizeof(struct rsnd_mix_platform_info) * nr,
+				GFP_KERNEL);
+	if (!mix_info) {
+		dev_err(dev, "mix info allocation error\n");
+		goto rsnd_of_parse_mix_end;
+	}
+
+	info->mix_info		= mix_info;
+	info->mix_info_nr	= nr;
+
+rsnd_of_parse_mix_end:
+	of_node_put(node);
+
+}
+
+int rsnd_mix_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_mix *mix;
+	struct clk *clk;
+	char name[MIX_NAME_SIZE];
+	int i, nr, ret;
+
+	/* This driver doesn't support Gen1 at this point */
+	if (rsnd_is_gen1(priv)) {
+		dev_warn(dev, "MIX is not supported on Gen1\n");
+		return -EINVAL;
+	}
+
+	rsnd_of_parse_mix(pdev, of_data, priv);
+
+	nr = info->mix_info_nr;
+	if (!nr)
+		return 0;
+
+	mix	= devm_kzalloc(dev, sizeof(*mix) * nr, GFP_KERNEL);
+	if (!mix)
+		return -ENOMEM;
+
+	priv->mix_nr	= nr;
+	priv->mix	= mix;
+
+	for_each_rsnd_mix(mix, priv, i) {
+		snprintf(name, MIX_NAME_SIZE, "%s.%d",
+			 MIX_NAME, i);
+
+		clk = devm_clk_get(dev, name);
+		if (IS_ERR(clk))
+			return PTR_ERR(clk);
+
+		mix->info = &info->mix_info[i];
+
+		ret = rsnd_mod_init(priv, &mix->mod, &rsnd_mix_ops,
+				    clk, RSND_MOD_MIX, i);
+		if (ret)
+			return ret;
+	}
+
+	return 0;
+}
+
+void rsnd_mix_remove(struct platform_device *pdev,
+		     struct rsnd_priv *priv)
+{
+	struct rsnd_mix *mix;
+	int i;
+
+	for_each_rsnd_mix(mix, priv, i) {
+		rsnd_mod_quit(&mix->mod);
+	}
+}