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@@ -0,0 +1,200 @@
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+/*
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+ * mix.c
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+ *
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+ * Copyright (c) 2015 Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
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+ *
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+ * This program is free software; you can redistribute it and/or modify
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+ * it under the terms of the GNU General Public License version 2 as
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+ * published by the Free Software Foundation.
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+ */
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+#include "rsnd.h"
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+
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+#define MIX_NAME_SIZE 16
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+#define MIX_NAME "mix"
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+
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+struct rsnd_mix {
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+ struct rsnd_mix_platform_info *info; /* rcar_snd.h */
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+ struct rsnd_mod mod;
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+};
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+
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+#define rsnd_mix_nr(priv) ((priv)->mix_nr)
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+#define for_each_rsnd_mix(pos, priv, i) \
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+ for ((i) = 0; \
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+ ((i) < rsnd_mix_nr(priv)) && \
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+ ((pos) = (struct rsnd_mix *)(priv)->mix + i); \
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+ i++)
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+
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+
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+static void rsnd_mix_soft_reset(struct rsnd_mod *mod)
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+{
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+ rsnd_mod_write(mod, MIX_SWRSR, 0);
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+ rsnd_mod_write(mod, MIX_SWRSR, 1);
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+}
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+
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+#define rsnd_mix_initialize_lock(mod) __rsnd_mix_initialize_lock(mod, 1)
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+#define rsnd_mix_initialize_unlock(mod) __rsnd_mix_initialize_lock(mod, 0)
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+static void __rsnd_mix_initialize_lock(struct rsnd_mod *mod, u32 enable)
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+{
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+ rsnd_mod_write(mod, MIX_MIXIR, enable);
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+}
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+
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+static void rsnd_mix_volume_update(struct rsnd_dai_stream *io,
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+ struct rsnd_mod *mod)
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+{
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+
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+ /* Disable MIX dB setting */
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+ rsnd_mod_write(mod, MIX_MDBER, 0);
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+
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+ rsnd_mod_write(mod, MIX_MDBAR, 0);
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+ rsnd_mod_write(mod, MIX_MDBBR, 0);
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+ rsnd_mod_write(mod, MIX_MDBCR, 0);
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+ rsnd_mod_write(mod, MIX_MDBDR, 0);
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+
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+ /* Enable MIX dB setting */
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+ rsnd_mod_write(mod, MIX_MDBER, 1);
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+}
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+
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+static int rsnd_mix_init(struct rsnd_mod *mod,
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+ struct rsnd_dai_stream *io,
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+ struct rsnd_priv *priv)
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+{
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+ rsnd_mod_hw_start(mod);
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+
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+ rsnd_mix_soft_reset(mod);
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+
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+ rsnd_mix_initialize_lock(mod);
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+
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+ rsnd_mod_write(mod, MIX_ADINR, rsnd_get_adinr_chan(mod, io));
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+
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+ rsnd_path_parse(priv, io);
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+
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+ /* volume step */
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+ rsnd_mod_write(mod, MIX_MIXMR, 0);
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+ rsnd_mod_write(mod, MIX_MVPDR, 0);
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+
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+ rsnd_mix_volume_update(io, mod);
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+
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+ rsnd_mix_initialize_unlock(mod);
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+
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+ return 0;
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+}
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+
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+static int rsnd_mix_quit(struct rsnd_mod *mod,
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+ struct rsnd_dai_stream *io,
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+ struct rsnd_priv *priv)
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+{
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+ rsnd_mod_hw_stop(mod);
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+
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+ return 0;
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+}
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+
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+static struct rsnd_mod_ops rsnd_mix_ops = {
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+ .name = MIX_NAME,
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+ .init = rsnd_mix_init,
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+ .quit = rsnd_mix_quit,
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+};
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+
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+struct rsnd_mod *rsnd_mix_mod_get(struct rsnd_priv *priv, int id)
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+{
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+ if (WARN_ON(id < 0 || id >= rsnd_mix_nr(priv)))
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+ id = 0;
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+
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+ return &((struct rsnd_mix *)(priv->mix) + id)->mod;
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+}
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+
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+static void rsnd_of_parse_mix(struct platform_device *pdev,
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+ const struct rsnd_of_data *of_data,
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+ struct rsnd_priv *priv)
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+{
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+ struct device_node *node;
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+ struct rsnd_mix_platform_info *mix_info;
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+ struct rcar_snd_info *info = rsnd_priv_to_info(priv);
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+ struct device *dev = &pdev->dev;
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+ int nr;
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+
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+ if (!of_data)
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+ return;
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+
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+ node = of_get_child_by_name(dev->of_node, "rcar_sound,mix");
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+ if (!node)
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+ return;
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+
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+ nr = of_get_child_count(node);
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+ if (!nr)
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+ goto rsnd_of_parse_mix_end;
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+
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+ mix_info = devm_kzalloc(dev,
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+ sizeof(struct rsnd_mix_platform_info) * nr,
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+ GFP_KERNEL);
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+ if (!mix_info) {
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+ dev_err(dev, "mix info allocation error\n");
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+ goto rsnd_of_parse_mix_end;
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+ }
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+
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+ info->mix_info = mix_info;
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+ info->mix_info_nr = nr;
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+
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+rsnd_of_parse_mix_end:
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+ of_node_put(node);
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+
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+}
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+
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+int rsnd_mix_probe(struct platform_device *pdev,
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+ const struct rsnd_of_data *of_data,
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+ struct rsnd_priv *priv)
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+{
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+ struct rcar_snd_info *info = rsnd_priv_to_info(priv);
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+ struct device *dev = rsnd_priv_to_dev(priv);
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+ struct rsnd_mix *mix;
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+ struct clk *clk;
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+ char name[MIX_NAME_SIZE];
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+ int i, nr, ret;
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+
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+ /* This driver doesn't support Gen1 at this point */
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+ if (rsnd_is_gen1(priv)) {
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+ dev_warn(dev, "MIX is not supported on Gen1\n");
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+ return -EINVAL;
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+ }
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+
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+ rsnd_of_parse_mix(pdev, of_data, priv);
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+
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+ nr = info->mix_info_nr;
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+ if (!nr)
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+ return 0;
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+
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+ mix = devm_kzalloc(dev, sizeof(*mix) * nr, GFP_KERNEL);
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+ if (!mix)
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+ return -ENOMEM;
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+
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+ priv->mix_nr = nr;
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+ priv->mix = mix;
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+
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+ for_each_rsnd_mix(mix, priv, i) {
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+ snprintf(name, MIX_NAME_SIZE, "%s.%d",
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+ MIX_NAME, i);
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+
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+ clk = devm_clk_get(dev, name);
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+ if (IS_ERR(clk))
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+ return PTR_ERR(clk);
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+
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+ mix->info = &info->mix_info[i];
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+
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+ ret = rsnd_mod_init(priv, &mix->mod, &rsnd_mix_ops,
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+ clk, RSND_MOD_MIX, i);
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+ if (ret)
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+ return ret;
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+ }
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+
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+ return 0;
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+}
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+
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+void rsnd_mix_remove(struct platform_device *pdev,
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+ struct rsnd_priv *priv)
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+{
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+ struct rsnd_mix *mix;
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+ int i;
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+
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+ for_each_rsnd_mix(mix, priv, i) {
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+ rsnd_mod_quit(&mix->mod);
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+ }
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+}
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Kuninori Morimoto