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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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8288591368
Don't populate the arrays path and cmd_case on the stack but make them static const. Makes the object code smaller: Before: text data bss dec hex filename 2673 624 0 3297 ce1 sound/soc/sh/rcar/cmd.o After: text data bss dec hex filename 2398 768 0 3166 c5e sound/soc/sh/rcar/cmd.o Signed-off-by: Colin Ian King <colin.king@canonical.com> Signed-off-by: Mark Brown <broonie@kernel.org>
186 lines
3.8 KiB
C
186 lines
3.8 KiB
C
/*
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* Renesas R-Car CMD support
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*
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* Copyright (C) 2015 Renesas Solutions Corp.
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* 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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struct rsnd_cmd {
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struct rsnd_mod mod;
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};
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#define CMD_NAME "cmd"
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#define rsnd_cmd_nr(priv) ((priv)->cmd_nr)
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#define for_each_rsnd_cmd(pos, priv, i) \
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for ((i) = 0; \
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((i) < rsnd_cmd_nr(priv)) && \
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((pos) = (struct rsnd_cmd *)(priv)->cmd + i); \
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i++)
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static int rsnd_cmd_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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struct rsnd_mod *dvc = rsnd_io_to_mod_dvc(io);
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struct rsnd_mod *mix = rsnd_io_to_mod_mix(io);
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struct device *dev = rsnd_priv_to_dev(priv);
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u32 data;
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static const u32 path[] = {
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[1] = 1 << 0,
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[5] = 1 << 8,
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[6] = 1 << 12,
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[9] = 1 << 15,
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};
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if (!mix && !dvc)
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return 0;
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if (ARRAY_SIZE(path) < rsnd_mod_id(mod) + 1)
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return -ENXIO;
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if (mix) {
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struct rsnd_dai *rdai;
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struct rsnd_mod *src;
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struct rsnd_dai_stream *tio;
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int i;
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/*
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* it is assuming that integrater is well understanding about
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* data path. Here doesn't check impossible connection,
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* like src2 + src5
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*/
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data = 0;
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for_each_rsnd_dai(rdai, priv, i) {
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tio = &rdai->playback;
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src = rsnd_io_to_mod_src(tio);
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if (mix == rsnd_io_to_mod_mix(tio))
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data |= path[rsnd_mod_id(src)];
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tio = &rdai->capture;
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src = rsnd_io_to_mod_src(tio);
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if (mix == rsnd_io_to_mod_mix(tio))
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data |= path[rsnd_mod_id(src)];
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}
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} else {
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struct rsnd_mod *src = rsnd_io_to_mod_src(io);
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static const u8 cmd_case[] = {
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[0] = 0x3,
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[1] = 0x3,
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[2] = 0x4,
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[3] = 0x1,
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[4] = 0x2,
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[5] = 0x4,
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[6] = 0x1,
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[9] = 0x2,
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};
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if (unlikely(!src))
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return -EIO;
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data = path[rsnd_mod_id(src)] |
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cmd_case[rsnd_mod_id(src)] << 16;
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}
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dev_dbg(dev, "ctu/mix path = 0x%08x", data);
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rsnd_mod_write(mod, CMD_ROUTE_SLCT, data);
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rsnd_mod_write(mod, CMD_BUSIF_MODE, rsnd_get_busif_shift(io, mod) | 1);
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rsnd_mod_write(mod, CMD_BUSIF_DALIGN, rsnd_get_dalign(mod, io));
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rsnd_adg_set_cmd_timsel_gen2(mod, io);
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return 0;
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}
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static int rsnd_cmd_start(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_write(mod, CMD_CTRL, 0x10);
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return 0;
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}
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static int rsnd_cmd_stop(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_write(mod, CMD_CTRL, 0);
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return 0;
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}
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static struct rsnd_mod_ops rsnd_cmd_ops = {
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.name = CMD_NAME,
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.init = rsnd_cmd_init,
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.start = rsnd_cmd_start,
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.stop = rsnd_cmd_stop,
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};
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int rsnd_cmd_attach(struct rsnd_dai_stream *io, int id)
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{
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struct rsnd_priv *priv = rsnd_io_to_priv(io);
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struct rsnd_mod *mod = rsnd_cmd_mod_get(priv, id);
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return rsnd_dai_connect(mod, io, mod->type);
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}
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struct rsnd_mod *rsnd_cmd_mod_get(struct rsnd_priv *priv, int id)
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{
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if (WARN_ON(id < 0 || id >= rsnd_cmd_nr(priv)))
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id = 0;
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return rsnd_mod_get((struct rsnd_cmd *)(priv->cmd) + id);
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}
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int rsnd_cmd_probe(struct rsnd_priv *priv)
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{
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struct device *dev = rsnd_priv_to_dev(priv);
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struct rsnd_cmd *cmd;
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int i, nr, ret;
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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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return 0;
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/* same number as DVC */
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nr = priv->dvc_nr;
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if (!nr)
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return 0;
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cmd = devm_kzalloc(dev, sizeof(*cmd) * nr, GFP_KERNEL);
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if (!cmd)
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return -ENOMEM;
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priv->cmd_nr = nr;
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priv->cmd = cmd;
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for_each_rsnd_cmd(cmd, priv, i) {
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ret = rsnd_mod_init(priv, rsnd_mod_get(cmd),
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&rsnd_cmd_ops, NULL,
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rsnd_mod_get_status, RSND_MOD_CMD, i);
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if (ret)
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return ret;
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}
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return 0;
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}
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void rsnd_cmd_remove(struct rsnd_priv *priv)
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{
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struct rsnd_cmd *cmd;
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int i;
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for_each_rsnd_cmd(cmd, priv, i) {
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rsnd_mod_quit(rsnd_mod_get(cmd));
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}
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}
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