Parse operations so we can bind them to kcontrols in the kernel.
Signed-off-by: Liam Girdwood liam.r.girdwood@linux.intel.com --- src/topology/ops.c | 90 ++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 90 insertions(+) create mode 100644 src/topology/ops.c
diff --git a/src/topology/ops.c b/src/topology/ops.c new file mode 100644 index 0000000..d3f4a28 --- /dev/null +++ b/src/topology/ops.c @@ -0,0 +1,90 @@ +/* + 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 + * + * ops."name" { + * info "volsw" + * get "256" + * put "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; +}