These changes are the raw update to linux-4.4.6-rt14. Kernel sources

[kvmfornfv.git] / kernel / sound / soc / sh / rcar / mix.c

diff --git a/kernel/sound/soc/sh/rcar/mix.c b/kernel/sound/soc/sh/rcar/mix.c
new file mode 100644 (file)
index 0000000..953dd0b
--- /dev/null
+++ b/kernel/sound/soc/sh/rcar/mix.c
@@ -0,0 +1,198 @@
+/*
+ * 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_power_on(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_power_off(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 rsnd_mod_get((struct rsnd_mix *)(priv->mix) + id);
+}
+
+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))
+               return 0;
+
+       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, rsnd_mod_get(mix), &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(rsnd_mod_get(mix));
+       }
+}