/*
 * HD audio interface patch for Creative X-Fi CA0110-IBG chip
 *
 * Copyright (c) 2008 Takashi Iwai <tiwai@suse.de>
 *
 *  This driver is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 2 of the License, or
 *  (at your option) any later version.
 *
 *  This driver 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.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program; if not, write to the Free Software
 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
 */

#include <linux/init.h>
#include <linux/delay.h>
#include <linux/slab.h>
#include <linux/pci.h>
#include <linux/module.h>
#include <sound/core.h>
#include "hda_codec.h"
#include "hda_local.h"

/*
 */

struct ca0110_spec {
	struct auto_pin_cfg autocfg;
	struct hda_multi_out multiout;
	hda_nid_t out_pins[AUTO_CFG_MAX_OUTS];
	hda_nid_t dacs[AUTO_CFG_MAX_OUTS];
	hda_nid_t hp_dac;
	hda_nid_t input_pins[AUTO_PIN_LAST];
	hda_nid_t adcs[AUTO_PIN_LAST];
	hda_nid_t dig_out;
	hda_nid_t dig_in;
	unsigned int num_inputs;
	const char *input_labels[AUTO_PIN_LAST];
	struct hda_pcm pcm_rec[2];	/* PCM information */
};

/*
 * PCM callbacks
 */
static int ca0110_playback_pcm_open(struct hda_pcm_stream *hinfo,
				    struct hda_codec *codec,
				    struct snd_pcm_substream *substream)
{
	struct ca0110_spec *spec = codec->spec;
	return snd_hda_multi_out_analog_open(codec, &spec->multiout, substream,
					     hinfo);
}

static int ca0110_playback_pcm_prepare(struct hda_pcm_stream *hinfo,
				       struct hda_codec *codec,
				       unsigned int stream_tag,
				       unsigned int format,
				       struct snd_pcm_substream *substream)
{
	struct ca0110_spec *spec = codec->spec;
	return snd_hda_multi_out_analog_prepare(codec, &spec->multiout,
						stream_tag, format, substream);
}

static int ca0110_playback_pcm_cleanup(struct hda_pcm_stream *hinfo,
				       struct hda_codec *codec,
				       struct snd_pcm_substream *substream)
{
	struct ca0110_spec *spec = codec->spec;
	return snd_hda_multi_out_analog_cleanup(codec, &spec->multiout);
}

/*
 * Digital out
 */
static int ca0110_dig_playback_pcm_open(struct hda_pcm_stream *hinfo,
					struct hda_codec *codec,
					struct snd_pcm_substream *substream)
{
	struct ca0110_spec *spec = codec->spec;
	return snd_hda_multi_out_dig_open(codec, &spec->multiout);
}

static int ca0110_dig_playback_pcm_close(struct hda_pcm_stream *hinfo,
					 struct hda_codec *codec,
					 struct snd_pcm_substream *substream)
{
	struct ca0110_spec *spec = codec->spec;
	return snd_hda_multi_out_dig_close(codec, &spec->multiout);
}

static int ca0110_dig_playback_pcm_prepare(struct hda_pcm_stream *hinfo,
					   struct hda_codec *codec,
					   unsigned int stream_tag,
					   unsigned int format,
					   struct snd_pcm_substream *substream)
{
	struct ca0110_spec *spec = codec->spec;
	return snd_hda_multi_out_dig_prepare(codec, &spec->multiout, stream_tag,
					     format, substream);
}

/*
 * Analog capture
 */
static int ca0110_capture_pcm_prepare(struct hda_pcm_stream *hinfo,
				      struct hda_codec *codec,
				      unsigned int stream_tag,
				      unsigned int format,
				      struct snd_pcm_substream *substream)
{
	struct ca0110_spec *spec = codec->spec;

	snd_hda_codec_setup_stream(codec, spec->adcs[substream->number],
				   stream_tag, 0, format);
	return 0;
}

static int ca0110_capture_pcm_cleanup(struct hda_pcm_stream *hinfo,
				      struct hda_codec *codec,
				      struct snd_pcm_substream *substream)
{
	struct ca0110_spec *spec = codec->spec;

	snd_hda_codec_cleanup_stream(codec, spec->adcs[substream->number]);
	return 0;
}

/*
 */

static const char * const dirstr[2] = { "Playback", "Capture" };

static int _add_switch(struct hda_codec *codec, hda_nid_t nid, const char *pfx,
		       int chan, int dir)
{
	char namestr[44];
	int type = dir ? HDA_INPUT : HDA_OUTPUT;
	struct snd_kcontrol_new knew =
		HDA_CODEC_MUTE_MONO(namestr, nid, chan, 0, type);
	sprintf(namestr, "%s %s Switch", pfx, dirstr[dir]);
	return snd_hda_ctl_add(codec, nid, snd_ctl_new1(&knew, codec));
}

static int _add_volume(struct hda_codec *codec, hda_nid_t nid, const char *pfx,
		       int chan, int dir)
{
	char namestr[44];
	int type = dir ? HDA_INPUT : HDA_OUTPUT;
	struct snd_kcontrol_new knew =
		HDA_CODEC_VOLUME_MONO(namestr, nid, chan, 0, type);
	sprintf(namestr, "%s %s Volume", pfx, dirstr[dir]);
	return snd_hda_ctl_add(codec, nid, snd_ctl_new1(&knew, codec));
}

#define add_out_switch(codec, nid, pfx)	_add_switch(codec, nid, pfx, 3, 0)
#define add_out_volume(codec, nid, pfx)	_add_volume(codec, nid, pfx, 3, 0)
#define add_in_switch(codec, nid, pfx)	_add_switch(codec, nid, pfx, 3, 1)
#define add_in_volume(codec, nid, pfx)	_add_volume(codec, nid, pfx, 3, 1)
#define add_mono_switch(codec, nid, pfx, chan) \
	_add_switch(codec, nid, pfx, chan, 0)
#define add_mono_volume(codec, nid, pfx, chan) \
	_add_volume(codec, nid, pfx, chan, 0)

static int ca0110_build_controls(struct hda_codec *codec)
{
	struct ca0110_spec *spec = codec->spec;
	struct auto_pin_cfg *cfg = &spec->autocfg;
	static const char * const prefix[AUTO_CFG_MAX_OUTS] = {
		"Front", "Surround", NULL, "Side", "Multi"
	};
	hda_nid_t mutenid;
	int i, err;

	for (i = 0; i < spec->multiout.num_dacs; i++) {
		if (get_wcaps(codec, spec->out_pins[i]) & AC_WCAP_OUT_AMP)
			mutenid = spec->out_pins[i];
		else
			mutenid = spec->multiout.dac_nids[i];
		if (!prefix[i]) {
			err = add_mono_switch(codec, mutenid,
					      "Center", 1);
			if (err < 0)
				return err;
			err = add_mono_switch(codec, mutenid,
					      "LFE", 1);
			if (err < 0)
				return err;
			err = add_mono_volume(codec, spec->multiout.dac_nids[i],
					      "Center", 1);
			if (err < 0)
				return err;
			err = add_mono_volume(codec, spec->multiout.dac_nids[i],
					      "LFE", 1);
			if (err < 0)
				return err;
		} else {
			err = add_out_switch(codec, mutenid,
					     prefix[i]);
			if (err < 0)
				return err;
			err = add_out_volume(codec, spec->multiout.dac_nids[i],
					 prefix[i]);
			if (err < 0)
				return err;
		}
	}
	if (cfg->hp_outs) {
		if (get_wcaps(codec, cfg->hp_pins[0]) & AC_WCAP_OUT_AMP)
			mutenid = cfg->hp_pins[0];
		else
			mutenid = spec->multiout.dac_nids[i];

		err = add_out_switch(codec, mutenid, "Headphone");
		if (err < 0)
			return err;
		if (spec->hp_dac) {
			err = add_out_volume(codec, spec->hp_dac, "Headphone");
			if (err < 0)
				return err;
		}
	}
	for (i = 0; i < spec->num_inputs; i++) {
		const char *label = spec->input_labels[i];
		if (get_wcaps(codec, spec->input_pins[i]) & AC_WCAP_IN_AMP)
			mutenid = spec->input_pins[i];
		else
			mutenid = spec->adcs[i];
		err = add_in_switch(codec, mutenid, label);
		if (err < 0)
			return err;
		err = add_in_volume(codec, spec->adcs[i], label);
		if (err < 0)
			return err;
	}

	if (spec->dig_out) {
		err = snd_hda_create_spdif_out_ctls(codec, spec->dig_out,
						    spec->dig_out);
		if (err < 0)
			return err;
		err = snd_hda_create_spdif_share_sw(codec, &spec->multiout);
		if (err < 0)
			return err;
		spec->multiout.share_spdif = 1;
	}
	if (spec->dig_in) {
		err = snd_hda_create_spdif_in_ctls(codec, spec->dig_in);
		if (err < 0)
			return err;
		err = add_in_volume(codec, spec->dig_in, "IEC958");
	}
	return 0;
}

/*
 */
static const struct hda_pcm_stream ca0110_pcm_analog_playback = {
	.substreams = 1,
	.channels_min = 2,
	.channels_max = 8,
	.ops = {
		.open = ca0110_playback_pcm_open,
		.prepare = ca0110_playback_pcm_prepare,
		.cleanup = ca0110_playback_pcm_cleanup
	},
};

static const struct hda_pcm_stream ca0110_pcm_analog_capture = {
	.substreams = 1,
	.channels_min = 2,
	.channels_max = 2,
	.ops = {
		.prepare = ca0110_capture_pcm_prepare,
		.cleanup = ca0110_capture_pcm_cleanup
	},
};

static const struct hda_pcm_stream ca0110_pcm_digital_playback = {
	.substreams = 1,
	.channels_min = 2,
	.channels_max = 2,
	.ops = {
		.open = ca0110_dig_playback_pcm_open,
		.close = ca0110_dig_playback_pcm_close,
		.prepare = ca0110_dig_playback_pcm_prepare
	},
};

static const struct hda_pcm_stream ca0110_pcm_digital_capture = {
	.substreams = 1,
	.channels_min = 2,
	.channels_max = 2,
};

static int ca0110_build_pcms(struct hda_codec *codec)
{
	struct ca0110_spec *spec = codec->spec;
	struct hda_pcm *info = spec->pcm_rec;

	codec->pcm_info = info;
	codec->num_pcms = 0;

	info->name = "CA0110 Analog";
	info->stream[SNDRV_PCM_STREAM_PLAYBACK] = ca0110_pcm_analog_playback;
	info->stream[SNDRV_PCM_STREAM_PLAYBACK].nid = spec->dacs[0];
	info->stream[SNDRV_PCM_STREAM_PLAYBACK].channels_max =
		spec->multiout.max_channels;
	info->stream[SNDRV_PCM_STREAM_CAPTURE] = ca0110_pcm_analog_capture;
	info->stream[SNDRV_PCM_STREAM_CAPTURE].substreams = spec->num_inputs;
	info->stream[SNDRV_PCM_STREAM_CAPTURE].nid = spec->adcs[0];
	codec->num_pcms++;

	if (!spec->dig_out && !spec->dig_in)
		return 0;

	info++;
	info->name = "CA0110 Digital";
	info->pcm_type = HDA_PCM_TYPE_SPDIF;
	if (spec->dig_out) {
		info->stream[SNDRV_PCM_STREAM_PLAYBACK] =
			ca0110_pcm_digital_playback;
		info->stream[SNDRV_PCM_STREAM_PLAYBACK].nid = spec->dig_out;
	}
	if (spec->dig_in) {
		info->stream[SNDRV_PCM_STREAM_CAPTURE] =
			ca0110_pcm_digital_capture;
		info->stream[SNDRV_PCM_STREAM_CAPTURE].nid = spec->dig_in;
	}
	codec->num_pcms++;

	return 0;
}

static void init_output(struct hda_codec *codec, hda_nid_t pin, hda_nid_t dac)
{
	if (pin) {
		snd_hda_codec_write(codec, pin, 0,
				    AC_VERB_SET_PIN_WIDGET_CONTROL, PIN_HP);
		if (get_wcaps(codec, pin) & AC_WCAP_OUT_AMP)
			snd_hda_codec_write(codec, pin, 0,
					    AC_VERB_SET_AMP_GAIN_MUTE,
					    AMP_OUT_UNMUTE);
	}
	if (dac)
		snd_hda_codec_write(codec, dac, 0,
				    AC_VERB_SET_AMP_GAIN_MUTE, AMP_OUT_ZERO);
}

static void init_input(struct hda_codec *codec, hda_nid_t pin, hda_nid_t adc)
{
	if (pin) {
		snd_hda_codec_write(codec, pin, 0,
				    AC_VERB_SET_PIN_WIDGET_CONTROL, PIN_VREF80);
		if (get_wcaps(codec, pin) & AC_WCAP_IN_AMP)
			snd_hda_codec_write(codec, pin, 0,
					    AC_VERB_SET_AMP_GAIN_MUTE,
					    AMP_IN_UNMUTE(0));
	}
	if (adc)
		snd_hda_codec_write(codec, adc, 0, AC_VERB_SET_AMP_GAIN_MUTE,
				    AMP_IN_UNMUTE(0));
}

static int ca0110_init(struct hda_codec *codec)
{
	struct ca0110_spec *spec = codec->spec;
	struct auto_pin_cfg *cfg = &spec->autocfg;
	int i;

	for (i = 0; i < spec->multiout.num_dacs; i++)
		init_output(codec, spec->out_pins[i],
			    spec->multiout.dac_nids[i]);
	init_output(codec, cfg->hp_pins[0], spec->hp_dac);
	init_output(codec, cfg->dig_out_pins[0], spec->dig_out);

	for (i = 0; i < spec->num_inputs; i++)
		init_input(codec, spec->input_pins[i], spec->adcs[i]);
	init_input(codec, cfg->dig_in_pin, spec->dig_in);
	return 0;
}

static void ca0110_free(struct hda_codec *codec)
{
	kfree(codec->spec);
}

static const struct hda_codec_ops ca0110_patch_ops = {
	.build_controls = ca0110_build_controls,
	.build_pcms = ca0110_build_pcms,
	.init = ca0110_init,
	.free = ca0110_free,
};


static void parse_line_outs(struct hda_codec *codec)
{
	struct ca0110_spec *spec = codec->spec;
	struct auto_pin_cfg *cfg = &spec->autocfg;
	int i, n;
	unsigned int def_conf;
	hda_nid_t nid;

	n = 0;
	for (i = 0; i < cfg->line_outs; i++) {
		nid = cfg->line_out_pins[i];
		def_conf = snd_hda_codec_get_pincfg(codec, nid);
		if (!def_conf)
			continue; /* invalid pin */
		if (snd_hda_get_connections(codec, nid, &spec->dacs[i], 1) != 1)
			continue;
		spec->out_pins[n++] = nid;
	}
	spec->multiout.dac_nids = spec->dacs;
	spec->multiout.num_dacs = n;
	spec->multiout.max_channels = n * 2;
}

static void parse_hp_out(struct hda_codec *codec)
{
	struct ca0110_spec *spec = codec->spec;
	struct auto_pin_cfg *cfg = &spec->autocfg;
	int i;
	unsigned int def_conf;
	hda_nid_t nid, dac;

	if (!cfg->hp_outs)
		return;
	nid = cfg->hp_pins[0];
	def_conf = snd_hda_codec_get_pincfg(codec, nid);
	if (!def_conf) {
		cfg->hp_outs = 0;
		return;
	}
	if (snd_hda_get_connections(codec, nid, &dac, 1) != 1)
		return;

	for (i = 0; i < cfg->line_outs; i++)
		if (dac == spec->dacs[i])
			break;
	if (i >= cfg->line_outs) {
		spec->hp_dac = dac;
		spec->multiout.hp_nid = dac;
	}
}

static void parse_input(struct hda_codec *codec)
{
	struct ca0110_spec *spec = codec->spec;
	struct auto_pin_cfg *cfg = &spec->autocfg;
	hda_nid_t nid, pin;
	int n, i, j;

	n = 0;
	nid = codec->start_nid;
	for (i = 0; i < codec->num_nodes; i++, nid++) {
		unsigned int wcaps = get_wcaps(codec, nid);
		unsigned int type = get_wcaps_type(wcaps);
		if (type != AC_WID_AUD_IN)
			continue;
		if (snd_hda_get_connections(codec, nid, &pin, 1) != 1)
			continue;
		if (pin == cfg->dig_in_pin) {
			spec->dig_in = nid;
			continue;
		}
		for (j = 0; j < cfg->num_inputs; j++)
			if (cfg->inputs[j].pin == pin)
				break;
		if (j >= cfg->num_inputs)
			continue;
		spec->input_pins[n] = pin;
		spec->input_labels[n] = hda_get_input_pin_label(codec, pin, 1);
		spec->adcs[n] = nid;
		n++;
	}
	spec->num_inputs = n;
}

static void parse_digital(struct hda_codec *codec)
{
	struct ca0110_spec *spec = codec->spec;
	struct auto_pin_cfg *cfg = &spec->autocfg;

	if (cfg->dig_outs &&
	    snd_hda_get_connections(codec, cfg->dig_out_pins[0],
				    &spec->dig_out, 1) == 1)
		spec->multiout.dig_out_nid = spec->dig_out;
}

static int ca0110_parse_auto_config(struct hda_codec *codec)
{
	struct ca0110_spec *spec = codec->spec;
	int err;

	err = snd_hda_parse_pin_def_config(codec, &spec->autocfg, NULL);
	if (err < 0)
		return err;

	parse_line_outs(codec);
	parse_hp_out(codec);
	parse_digital(codec);
	parse_input(codec);
	return 0;
}


static int patch_ca0110(struct hda_codec *codec)
{
	struct ca0110_spec *spec;
	int err;

	spec = kzalloc(sizeof(*spec), GFP_KERNEL);
	if (!spec)
		return -ENOMEM;
	codec->spec = spec;

	codec->bus->needs_damn_long_delay = 1;

	err = ca0110_parse_auto_config(codec);
	if (err < 0)
		goto error;

	codec->patch_ops = ca0110_patch_ops;

	return 0;

 error:
	kfree(codec->spec);
	codec->spec = NULL;
	return err;
}


/*
 * patch entries
 */
static const struct hda_codec_preset snd_hda_preset_ca0110[] = {
	{ .id = 0x1102000a, .name = "CA0110-IBG", .patch = patch_ca0110 },
	{ .id = 0x1102000b, .name = "CA0110-IBG", .patch = patch_ca0110 },
	{ .id = 0x1102000d, .name = "SB0880 X-Fi", .patch = patch_ca0110 },
	{} /* terminator */
};

MODULE_ALIAS("snd-hda-codec-id:1102000a");
MODULE_ALIAS("snd-hda-codec-id:1102000b");
MODULE_ALIAS("snd-hda-codec-id:1102000d");

MODULE_LICENSE("GPL");
MODULE_DESCRIPTION("Creative CA0110-IBG HD-audio codec");

static struct hda_codec_preset_list ca0110_list = {
	.preset = snd_hda_preset_ca0110,
	.owner = THIS_MODULE,
};

static int __init patch_ca0110_init(void)
{
	return snd_hda_add_codec_preset(&ca0110_list);
}

static void __exit patch_ca0110_exit(void)
{
	snd_hda_delete_codec_preset(&ca0110_list);
}

module_init(patch_ca0110_init)
module_exit(patch_ca0110_exit)