diff options
Diffstat (limited to 'sound/soc/sh/rcar/cmd.c')
| -rw-r--r-- | sound/soc/sh/rcar/cmd.c | 195 |
1 files changed, 195 insertions, 0 deletions
diff --git a/sound/soc/sh/rcar/cmd.c b/sound/soc/sh/rcar/cmd.c new file mode 100644 index 000000000..329e6ab1b --- /dev/null +++ b/sound/soc/sh/rcar/cmd.c @@ -0,0 +1,195 @@ +// SPDX-License-Identifier: GPL-2.0 +// +// Renesas R-Car CMD support +// +// Copyright (C) 2015 Renesas Solutions Corp. +// Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> + +#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 device *dev = rsnd_priv_to_dev(priv); + u32 data; + static const u32 path[] = { + [1] = 1 << 0, + [5] = 1 << 8, + [6] = 1 << 12, + [9] = 1 << 15, + }; + + if (!mix && !dvc) + return 0; + + if (ARRAY_SIZE(path) < rsnd_mod_id(mod) + 1) + return -ENXIO; + + if (mix) { + struct rsnd_dai *rdai; + int i; + + /* + * 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) { + struct rsnd_dai_stream *tio = &rdai->playback; + struct rsnd_mod *src = rsnd_io_to_mod_src(tio); + + if (mix == rsnd_io_to_mod_mix(tio)) + data |= path[rsnd_mod_id(src)]; + + tio = &rdai->capture; + src = rsnd_io_to_mod_src(tio); + if (mix == rsnd_io_to_mod_mix(tio)) + data |= path[rsnd_mod_id(src)]; + } + + } else { + struct rsnd_mod *src = rsnd_io_to_mod_src(io); + + static const u8 cmd_case[] = { + [0] = 0x3, + [1] = 0x3, + [2] = 0x4, + [3] = 0x1, + [4] = 0x2, + [5] = 0x4, + [6] = 0x1, + [9] = 0x2, + }; + + if (unlikely(!src)) + return -EIO; + + data = path[rsnd_mod_id(src)] | + cmd_case[rsnd_mod_id(src)] << 16; + } + + dev_dbg(dev, "ctu/mix path = 0x%08x\n", data); + + rsnd_mod_write(mod, CMD_ROUTE_SLCT, data); + rsnd_mod_write(mod, CMD_BUSIF_MODE, rsnd_get_busif_shift(io, mod) | 1); + rsnd_mod_write(mod, CMD_BUSIF_DALIGN, rsnd_get_dalign(mod, io)); + + rsnd_adg_set_cmd_timsel_gen2(mod, io); + + return 0; +} + +static int rsnd_cmd_start(struct rsnd_mod *mod, + struct rsnd_dai_stream *io, + struct rsnd_priv *priv) +{ + rsnd_mod_write(mod, CMD_CTRL, 0x10); + + return 0; +} + +static int rsnd_cmd_stop(struct rsnd_mod *mod, + struct rsnd_dai_stream *io, + struct rsnd_priv *priv) +{ + rsnd_mod_write(mod, CMD_CTRL, 0); + + return 0; +} + +#ifdef CONFIG_DEBUG_FS +static void rsnd_cmd_debug_info(struct seq_file *m, + struct rsnd_dai_stream *io, + struct rsnd_mod *mod) +{ + rsnd_debugfs_mod_reg_show(m, mod, RSND_GEN2_SCU, + 0x180 + rsnd_mod_id_raw(mod) * 0x20, 0x30); +} +#define DEBUG_INFO .debug_info = rsnd_cmd_debug_info +#else +#define DEBUG_INFO +#endif + +static struct rsnd_mod_ops rsnd_cmd_ops = { + .name = CMD_NAME, + .init = rsnd_cmd_init, + .start = rsnd_cmd_start, + .stop = rsnd_cmd_stop, + .get_status = rsnd_mod_get_status, + DEBUG_INFO +}; + +static 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_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); +} + +int rsnd_cmd_probe(struct rsnd_priv *priv) +{ + struct device *dev = rsnd_priv_to_dev(priv); + struct rsnd_cmd *cmd; + int i, nr; + + /* 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_kcalloc(dev, nr, sizeof(*cmd), GFP_KERNEL); + if (!cmd) + return -ENOMEM; + + priv->cmd_nr = nr; + priv->cmd = cmd; + + for_each_rsnd_cmd(cmd, priv, i) { + int 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 rsnd_priv *priv) +{ + struct rsnd_cmd *cmd; + int i; + + for_each_rsnd_cmd(cmd, priv, i) { + rsnd_mod_quit(rsnd_mod_get(cmd)); + } +} |