cregit-Linux how code gets into the kernel

Release 4.11 sound/soc/sh/rcar/cmd.c

/*
 * 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 device *dev = rsnd_priv_to_dev(priv); u32 data; 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; struct rsnd_mod *src; struct rsnd_dai_stream *tio; 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) { tio = &rdai->playback; 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); u8 cmd_case[] = { [0] = 0x3, [1] = 0x3, [2] = 0x4, [3] = 0x1, [4] = 0x2, [5] = 0x4, [6] = 0x1, [9] = 0x2, }; data = path[rsnd_mod_id(src)] | cmd_case[rsnd_mod_id(src)] << 16; } dev_dbg(dev, "ctu/mix path = 0x%08x", data); rsnd_mod_write(mod, CMD_ROUTE_SLCT, data); rsnd_mod_write(mod, CMD_BUSIF_DALIGN, rsnd_get_dalign(mod, io)); rsnd_adg_set_cmd_timsel_gen2(mod, io); return 0; }

Contributors

PersonTokensPropCommitsCommitProp
Kuninori Morimoto26875.49%583.33%
Hiroyuki Yokoyama8724.51%116.67%
Total355100.00%6100.00%


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; }

Contributors

PersonTokensPropCommitsCommitProp
Kuninori Morimoto33100.00%2100.00%
Total33100.00%2100.00%


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; }

Contributors

PersonTokensPropCommitsCommitProp
Kuninori Morimoto33100.00%1100.00%
Total33100.00%1100.00%

static struct rsnd_mod_ops rsnd_cmd_ops = { .name = CMD_NAME, .init = rsnd_cmd_init, .start = rsnd_cmd_start, .stop = rsnd_cmd_stop, };
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); }

Contributors

PersonTokensPropCommitsCommitProp
Kuninori Morimoto47100.00%1100.00%
Total47100.00%1100.00%


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); }

Contributors

PersonTokensPropCommitsCommitProp
Kuninori Morimoto52100.00%1100.00%
Total52100.00%1100.00%


int rsnd_cmd_probe(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_get_status, RSND_MOD_CMD, i); if (ret) return ret; } return 0; }

Contributors

PersonTokensPropCommitsCommitProp
Kuninori Morimoto139100.00%2100.00%
Total139100.00%2100.00%


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)); } }

Contributors

PersonTokensPropCommitsCommitProp
Kuninori Morimoto36100.00%1100.00%
Total36100.00%1100.00%


Overall Contributors

PersonTokensPropCommitsCommitProp
Kuninori Morimoto67188.52%685.71%
Hiroyuki Yokoyama8711.48%114.29%
Total758100.00%7100.00%
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