Merge remote-tracking branch 'asoc/topic/rcar' into asoc-next

[karo-tx-linux.git] / sound / soc / sh / rcar / cmd.c

diff --git a/sound/soc/sh/rcar/cmd.c b/sound/soc/sh/rcar/cmd.c
new file mode 100644 (file)
index 0000000..731d74b
--- /dev/null
+++ b/sound/soc/sh/rcar/cmd.c
@@ -0,0 +1,153 @@
+/*
+ * Renesas R-Car CMD support
+ *
+ * Copyright (C) 2015 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"
+
+struct rsnd_cmd {
+       struct rsnd_mod mod;
+};
+
+#define CMD_NAME "cmd"
+
+#define rsnd_cmd_nr(priv) ((priv)->cmd_nr)
+#define for_each_rsnd_cmd(pos, priv, i)                                        \
+       for ((i) = 0;                                                   \
+            ((i) < rsnd_cmd_nr(priv)) &&                               \
+                    ((pos) = (struct rsnd_cmd *)(priv)->cmd + i);      \
+            i++)
+
+static int rsnd_cmd_init(struct rsnd_mod *mod,
+                        struct rsnd_dai_stream *io,
+                        struct rsnd_priv *priv)
+{
+       struct rsnd_mod *dvc = rsnd_io_to_mod_dvc(io);
+       struct rsnd_mod *mix = rsnd_io_to_mod_mix(io);
+       struct rsnd_mod *src = rsnd_io_to_mod_src(io);
+       struct device *dev = rsnd_priv_to_dev(priv);
+       u32 data;
+
+       if (!mix && !dvc)
+               return 0;
+
+       if (mix) {
+               struct rsnd_dai *rdai;
+               int i;
+               u32 path[] = {
+                       [0] = 0,
+                       [1] = 1 << 0,
+                       [2] = 0,
+                       [3] = 0,
+                       [4] = 0,
+                       [5] = 1 << 8
+               };
+
+               /*
+                * it is assuming that integrater is well understanding about
+                * data path. Here doesn't check impossible connection,
+                * like src2 + src5
+                */
+               data = 0;
+               for_each_rsnd_dai(rdai, priv, i) {
+                       io = &rdai->playback;
+                       if (mix == rsnd_io_to_mod_mix(io))
+                               data |= path[rsnd_mod_id(src)];
+
+                       io = &rdai->capture;
+                       if (mix == rsnd_io_to_mod_mix(io))
+                               data |= path[rsnd_mod_id(src)];
+               }
+
+       } else {
+               u32 path[] = {
+                       [0] = 0x30000,
+                       [1] = 0x30001,
+                       [2] = 0x40000,
+                       [3] = 0x10000,
+                       [4] = 0x20000,
+                       [5] = 0x40100
+               };
+
+               data = path[rsnd_mod_id(src)];
+       }
+
+       dev_dbg(dev, "ctu/mix path = 0x%08x", data);
+
+       rsnd_mod_write(mod, CMD_ROUTE_SLCT, data);
+
+       rsnd_mod_write(mod, CMD_CTRL, 0x10);
+
+       return 0;
+}
+
+static struct rsnd_mod_ops rsnd_cmd_ops = {
+       .name   = CMD_NAME,
+       .init   = rsnd_cmd_init,
+};
+
+int rsnd_cmd_attach(struct rsnd_dai_stream *io, int id)
+{
+       struct rsnd_priv *priv = rsnd_io_to_priv(io);
+       struct rsnd_mod *mod = rsnd_cmd_mod_get(priv, id);
+
+       return rsnd_dai_connect(mod, io, mod->type);
+}
+
+struct rsnd_mod *rsnd_cmd_mod_get(struct rsnd_priv *priv, int id)
+{
+       if (WARN_ON(id < 0 || id >= rsnd_cmd_nr(priv)))
+               id = 0;
+
+       return rsnd_mod_get((struct rsnd_cmd *)(priv->cmd) + id);
+}
+
+int rsnd_cmd_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_cmd *cmd;
+       int i, nr, ret;
+
+       /* This driver doesn't support Gen1 at this point */
+       if (rsnd_is_gen1(priv))
+               return 0;
+
+       /* same number as DVC */
+       nr = priv->dvc_nr;
+       if (!nr)
+               return 0;
+
+       cmd = devm_kzalloc(dev, sizeof(*cmd) * nr, GFP_KERNEL);
+       if (!cmd)
+               return -ENOMEM;
+
+       priv->cmd_nr    = nr;
+       priv->cmd       = cmd;
+
+       for_each_rsnd_cmd(cmd, priv, i) {
+               ret = rsnd_mod_init(priv, rsnd_mod_get(cmd),
+                                   &rsnd_cmd_ops, NULL, RSND_MOD_CMD, i);
+               if (ret)
+                       return ret;
+       }
+
+       return 0;
+}
+
+void rsnd_cmd_remove(struct platform_device *pdev,
+                    struct rsnd_priv *priv)
+{
+       struct rsnd_cmd *cmd;
+       int i;
+
+       for_each_rsnd_cmd(cmd, priv, i) {
+               rsnd_mod_quit(rsnd_mod_get(cmd));
+       }
+}