/*

  Copyright(c) 2014-2015 Intel Corporation

  All rights reserved.

  This library is free software; you can redistribute it and/or modify

  it under the terms of the GNU Lesser General Public License as

  published by the Free Software Foundation; either version 2.1 of

  the License, or (at your option) any later version.

  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 Lesser 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 channel text names to types */

static const struct map_elem channel_map[] = {

	{"mono", SNDRV_CHMAP_MONO},	/* mono stream */

	{"fl", SNDRV_CHMAP_FL},		/* front left */

	{"fr", SNDRV_CHMAP_FR},		/* front right */

	{"rl", SNDRV_CHMAP_RL},		/* rear left */

	{"rr", SNDRV_CHMAP_RR},		/* rear right */

	{"fc", SNDRV_CHMAP_FC},		/* front center */

	{"lfe", SNDRV_CHMAP_LFE},	/* LFE */

	{"sl", SNDRV_CHMAP_SL},		/* side left */

	{"sr", SNDRV_CHMAP_SR},		/* side right */

	{"rc", SNDRV_CHMAP_RC},		/* rear center */

	{"flc", SNDRV_CHMAP_FLC},	/* front left center */

	{"frc", SNDRV_CHMAP_FRC},	/* front right center */

	{"rlc", SNDRV_CHMAP_RLC},	/* rear left center */

	{"rrc", SNDRV_CHMAP_RRC},	/* rear right center */

	{"flw", SNDRV_CHMAP_FLW},	/* front left wide */

	{"frw", SNDRV_CHMAP_FRW},	/* front right wide */

	{"flh", SNDRV_CHMAP_FLH},	/* front left high */

	{"fch", SNDRV_CHMAP_FCH},	/* front center high */

	{"frh", SNDRV_CHMAP_FRH},	/* front right high */

	{"tc", SNDRV_CHMAP_TC},		/* top center */

	{"tfl", SNDRV_CHMAP_TFL},	/* top front left */

	{"tfr", SNDRV_CHMAP_TFR},	/* top front right */

	{"tfc", SNDRV_CHMAP_TFC},	/* top front center */

	{"trl", SNDRV_CHMAP_TRL},	/* top rear left */

	{"trr", SNDRV_CHMAP_TRR},	/* top rear right */

	{"trc", SNDRV_CHMAP_TRC},	/* top rear center */

	{"tflc", SNDRV_CHMAP_TFLC},	/* top front left center */

	{"tfrc", SNDRV_CHMAP_TFRC},	/* top front right center */

	{"tsl", SNDRV_CHMAP_TSL},	/* top side left */

	{"tsr", SNDRV_CHMAP_TSR},	/* top side right */

	{"llfe", SNDRV_CHMAP_LLFE},	/* left LFE */

	{"rlfe", SNDRV_CHMAP_RLFE},	/* right LFE */

	{"bc", SNDRV_CHMAP_BC},		/* bottom center */

	{"blc", SNDRV_CHMAP_BLC},	/* bottom left center */

	{"brc", SNDRV_CHMAP_BRC},	/* bottom right center */

};

static int lookup_channel(const char *c)

{

	unsigned int i;

	for (i = 0; i < ARRAY_SIZE(channel_map); i++) {

		if (strcasecmp(channel_map[i].name, c) == 0) {

			return channel_map[i].id;

		}

	}

	return -EINVAL;

}

/* Parse a channel mapping. */

int tplg_parse_channel(snd_tplg_t *tplg,

	snd_config_t *cfg, void *private)

{

	snd_config_iterator_t i, next;

	snd_config_t *n;

	struct snd_soc_tplg_channel *channel = private;

	const char *id, *value;

	int channel_id;

	if (tplg->channel_idx >= SND_SOC_TPLG_MAX_CHAN)

		return -EINVAL;

	channel += tplg->channel_idx;

	snd_config_get_id(cfg, &id;;

	tplg_dbg("\tChannel %s at index %d\n", id, tplg->channel_idx);

	channel_id = lookup_channel(id);

	if (channel_id < 0) {

		SNDERR("error: invalid channel %s\n", id);

		return -EINVAL;

	}

	channel->id = channel_id;

	channel->size = sizeof(*channel);

	tplg_dbg("\tChan %s = %d\n", id, channel->id);

	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 */

		if (snd_config_get_string(n, &value) < 0)

			continue;

		if (strcmp(id, "reg") == 0)

			channel->reg = atoi(value);

		else if (strcmp(id, "shift") == 0)

			channel->shift = atoi(value);

		tplg_dbg("\t\t%s = %s\n", id, value);

	}

	tplg->channel_idx++;

	return 0;

}