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topology: Add operations parser

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Parse operations so we can bind them to kcontrols in the kernel.

Signed-off-by: Liam Girdwood <liam.r.girdwood@linux.intel.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Liam Girdwood 2015-07-29 17:45:17 +01:00 • committed by Takashi Iwai
parent 4db19506c3
commit 353f1eddb6
1 changed files with 84 additions and 0 deletions
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src/topology/ops.c Normal file
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/*
Copyright(c) 2014-2015 Intel Corporation
All rights reserved.
This program is free software; you can redistribute it and/or modify
it under the terms of version 2 of the GNU General Public License as
published by the Free Software Foundation.
This program is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
General Public License for more details.
Authors: Mengdong Lin <mengdong.lin@intel.com>
Yao Jin <yao.jin@intel.com>
Liam Girdwood <liam.r.girdwood@linux.intel.com>
*/
#include "list.h"
#include "tplg_local.h"
/* mapping of kcontrol text names to types */
static const struct map_elem control_map[] = {
{"volsw", SND_SOC_TPLG_CTL_VOLSW},
{"volsw_sx", SND_SOC_TPLG_CTL_VOLSW_SX},
{"volsw_xr_sx", SND_SOC_TPLG_CTL_VOLSW_XR_SX},
{"enum", SND_SOC_TPLG_CTL_ENUM},
{"bytes", SND_SOC_TPLG_CTL_BYTES},
{"enum_value", SND_SOC_TPLG_CTL_ENUM_VALUE},
{"range", SND_SOC_TPLG_CTL_RANGE},
{"strobe", SND_SOC_TPLG_CTL_STROBE},
};
static int lookup_ops(const char *c)
{
unsigned int i;
for (i = 0; i < ARRAY_SIZE(control_map); i++) {
if (strcmp(control_map[i].name, c) == 0)
return control_map[i].id;
}
/* cant find string name in our table so we use its ID number */
return atoi(c);
}
/* Parse Control operations. Ops can come from standard names above or
* bespoke driver controls with numbers >= 256
*/
int tplg_parse_ops(snd_tplg_t *tplg ATTRIBUTE_UNUSED,
snd_config_t *cfg, void *private)
{
snd_config_iterator_t i, next;
snd_config_t *n;
struct snd_soc_tplg_ctl_hdr *hdr = private;
const char *id, *value;
tplg_dbg("\tOps\n");
hdr->size = sizeof(*hdr);
snd_config_for_each(i, next, cfg) {
n = snd_config_iterator_entry(i);
/* get id */
if (snd_config_get_id(n, &id) < 0)
continue;
/* get value - try strings then ints */
if (snd_config_get_string(n, &value) < 0)
continue;
if (strcmp(id, "info") == 0)
hdr->ops.info = lookup_ops(value);
else if (strcmp(id, "put") == 0)
hdr->ops.put = lookup_ops(value);
else if (strcmp(id, "get") == 0)
hdr->ops.get = lookup_ops(value);
tplg_dbg("\t\t%s = %s\n", id, value);
}
return 0;
}