ac97_patch.c

linux 内核源代码

/*
 *  Copyright (c) by Jaroslav Kysela <[e-mail]>
 *  Universal interface for Audio Codec '97
 *
 *  For more details look to AC '97 component specification revision 2.2
 *  by Intel Corporation (http://developer.intel.com) and to datasheets
 *  for specific codecs.
 *
 *
 *   This program 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 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.
 *
 *   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 "ac97_local.h"
#include "ac97_patch.h"

/*
 *  Chip specific initialization
 */

static int patch_build_controls(struct snd_ac97 * ac97, const struct snd_kcontrol_new *controls, int count)
{
	int idx, err;

	for (idx = 0; idx < count; idx++)
		if ((err = snd_ctl_add(ac97->bus->card, snd_ac97_cnew(&controls[idx], ac97))) < 0)
			return err;
	return 0;
}

/* replace with a new TLV */
static void reset_tlv(struct snd_ac97 *ac97, const char *name,
		      const unsigned int *tlv)
{
	struct snd_ctl_elem_id sid;
	struct snd_kcontrol *kctl;
	memset(&sid, 0, sizeof(sid));
	strcpy(sid.name, name);
	sid.iface = SNDRV_CTL_ELEM_IFACE_MIXER;
	kctl = snd_ctl_find_id(ac97->bus->card, &sid);
	if (kctl && kctl->tlv.p)
		kctl->tlv.p = tlv;
}

/* set to the page, update bits and restore the page */
static int ac97_update_bits_page(struct snd_ac97 *ac97, unsigned short reg, unsigned short mask, unsigned short value, unsigned short page)
{
	unsigned short page_save;
	int ret;

	mutex_lock(&ac97->page_mutex);
	page_save = snd_ac97_read(ac97, AC97_INT_PAGING) & AC97_PAGE_MASK;
	snd_ac97_update_bits(ac97, AC97_INT_PAGING, AC97_PAGE_MASK, page);
	ret = snd_ac97_update_bits(ac97, reg, mask, value);
	snd_ac97_update_bits(ac97, AC97_INT_PAGING, AC97_PAGE_MASK, page_save);
	mutex_unlock(&ac97->page_mutex); /* unlock paging */
	return ret;
}

/*
 * shared line-in/mic controls
 */
static int ac97_enum_text_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo,
			       const char **texts, unsigned int nums)
{
	uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
	uinfo->count = 1;
	uinfo->value.enumerated.items = nums;
	if (uinfo->value.enumerated.item > nums - 1)
		uinfo->value.enumerated.item = nums - 1;
	strcpy(uinfo->value.enumerated.name, texts[uinfo->value.enumerated.item]);
	return 0;
}

static int ac97_surround_jack_mode_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
{
	static const char *texts[] = { "Shared", "Independent" };
	return ac97_enum_text_info(kcontrol, uinfo, texts, 2);
}

static int ac97_surround_jack_mode_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
{
	struct snd_ac97 *ac97 = snd_kcontrol_chip(kcontrol);

	ucontrol->value.enumerated.item[0] = ac97->indep_surround;
	return 0;
}

static int ac97_surround_jack_mode_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
{
	struct snd_ac97 *ac97 = snd_kcontrol_chip(kcontrol);
	unsigned char indep = !!ucontrol->value.enumerated.item[0];

	if (indep != ac97->indep_surround) {
		ac97->indep_surround = indep;
		if (ac97->build_ops->update_jacks)
			ac97->build_ops->update_jacks(ac97);
		return 1;
	}
	return 0;
}

static int ac97_channel_mode_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
{
	static const char *texts[] = { "2ch", "4ch", "6ch" };
	if (kcontrol->private_value)
		return ac97_enum_text_info(kcontrol, uinfo, texts, 2); /* 4ch only */
	return ac97_enum_text_info(kcontrol, uinfo, texts, 3);
}

static int ac97_channel_mode_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
{
	struct snd_ac97 *ac97 = snd_kcontrol_chip(kcontrol);

	ucontrol->value.enumerated.item[0] = ac97->channel_mode;
	return 0;
}

static int ac97_channel_mode_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
{
	struct snd_ac97 *ac97 = snd_kcontrol_chip(kcontrol);
	unsigned char mode = ucontrol->value.enumerated.item[0];

	if (mode != ac97->channel_mode) {
		ac97->channel_mode = mode;
		if (ac97->build_ops->update_jacks)
			ac97->build_ops->update_jacks(ac97);
		return 1;
	}
	return 0;
}

#define AC97_SURROUND_JACK_MODE_CTL \
	{ \
		.iface	= SNDRV_CTL_ELEM_IFACE_MIXER, \
		.name	= "Surround Jack Mode", \
		.info = ac97_surround_jack_mode_info, \
		.get = ac97_surround_jack_mode_get, \
		.put = ac97_surround_jack_mode_put, \
	}
#define AC97_CHANNEL_MODE_CTL \
	{ \
		.iface	= SNDRV_CTL_ELEM_IFACE_MIXER, \
		.name	= "Channel Mode", \
		.info = ac97_channel_mode_info, \
		.get = ac97_channel_mode_get, \
		.put = ac97_channel_mode_put, \
	}
#define AC97_CHANNEL_MODE_4CH_CTL \
	{ \
		.iface	= SNDRV_CTL_ELEM_IFACE_MIXER, \
		.name	= "Channel Mode", \
		.info = ac97_channel_mode_info, \
		.get = ac97_channel_mode_get, \
		.put = ac97_channel_mode_put, \
		.private_value = 1, \
	}

static inline int is_surround_on(struct snd_ac97 *ac97)
{
	return ac97->channel_mode >= 1;
}

static inline int is_clfe_on(struct snd_ac97 *ac97)
{
	return ac97->channel_mode >= 2;
}

/* system has shared jacks with surround out enabled */
static inline int is_shared_surrout(struct snd_ac97 *ac97)
{
	return !ac97->indep_surround && is_surround_on(ac97);
}

/* system has shared jacks with center/lfe out enabled */
static inline int is_shared_clfeout(struct snd_ac97 *ac97)
{
	return !ac97->indep_surround && is_clfe_on(ac97);
}

/* system has shared jacks with line in enabled */
static inline int is_shared_linein(struct snd_ac97 *ac97)
{
	return !ac97->indep_surround && !is_surround_on(ac97);
}

/* system has shared jacks with mic in enabled */
static inline int is_shared_micin(struct snd_ac97 *ac97)
{
	return !ac97->indep_surround && !is_clfe_on(ac97);
}


/* The following snd_ac97_ymf753_... items added by David Shust ([e-mail]) */
/* Modified for YMF743 by Keita Maehara <[e-mail]> */

/* It is possible to indicate to the Yamaha YMF7x3 the type of
   speakers being used. */

static int snd_ac97_ymf7x3_info_speaker(struct snd_kcontrol *kcontrol,
					struct snd_ctl_elem_info *uinfo)
{
	static char *texts[3] = {
		"Standard", "Small", "Smaller"
	};

	uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
	uinfo->count = 1;
	uinfo->value.enumerated.items = 3;
	if (uinfo->value.enumerated.item > 2)
		uinfo->value.enumerated.item = 2;
	strcpy(uinfo->value.enumerated.name, texts[uinfo->value.enumerated.item]);
	return 0;
}

static int snd_ac97_ymf7x3_get_speaker(struct snd_kcontrol *kcontrol,
				       struct snd_ctl_elem_value *ucontrol)
{
	struct snd_ac97 *ac97 = snd_kcontrol_chip(kcontrol);
	unsigned short val;

	val = ac97->regs[AC97_YMF7X3_3D_MODE_SEL];
	val = (val >> 10) & 3;
	if (val > 0)    /* 0 = invalid */
		val--;
	ucontrol->value.enumerated.item[0] = val;
	return 0;
}

static int snd_ac97_ymf7x3_put_speaker(struct snd_kcontrol *kcontrol,
				       struct snd_ctl_elem_value *ucontrol)
{
	struct snd_ac97 *ac97 = snd_kcontrol_chip(kcontrol);
	unsigned short val;

	if (ucontrol->value.enumerated.item[0] > 2)
		return -EINVAL;
	val = (ucontrol->value.enumerated.item[0] + 1) << 10;
	return snd_ac97_update(ac97, AC97_YMF7X3_3D_MODE_SEL, val);
}

static const struct snd_kcontrol_new snd_ac97_ymf7x3_controls_speaker =
{
	.iface  = SNDRV_CTL_ELEM_IFACE_MIXER,
	.name   = "3D Control - Speaker",
	.info   = snd_ac97_ymf7x3_info_speaker,
	.get    = snd_ac97_ymf7x3_get_speaker,
	.put    = snd_ac97_ymf7x3_put_speaker,
};

/* It is possible to indicate to the Yamaha YMF7x3 the source to
   direct to the S/PDIF output. */
static int snd_ac97_ymf7x3_spdif_source_info(struct snd_kcontrol *kcontrol,
					     struct snd_ctl_elem_info *uinfo)
{
	static char *texts[2] = { "AC-Link", "A/D Converter" };

	uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
	uinfo->count = 1;
	uinfo->value.enumerated.items = 2;
	if (uinfo->value.enumerated.item > 1)
		uinfo->value.enumerated.item = 1;
	strcpy(uinfo->value.enumerated.name, texts[uinfo->value.enumerated.item]);
	return 0;
}

static int snd_ac97_ymf7x3_spdif_source_get(struct snd_kcontrol *kcontrol,
					    struct snd_ctl_elem_value *ucontrol)
{
	struct snd_ac97 *ac97 = snd_kcontrol_chip(kcontrol);
	unsigned short val;

	val = ac97->regs[AC97_YMF7X3_DIT_CTRL];
	ucontrol->value.enumerated.item[0] = (val >> 1) & 1;
	return 0;
}

static int snd_ac97_ymf7x3_spdif_source_put(struct snd_kcontrol *kcontrol,
					    struct snd_ctl_elem_value *ucontrol)
{
	struct snd_ac97 *ac97 = snd_kcontrol_chip(kcontrol);
	unsigned short val;

	if (ucontrol->value.enumerated.item[0] > 1)
		return -EINVAL;
	val = ucontrol->value.enumerated.item[0] << 1;
	return snd_ac97_update_bits(ac97, AC97_YMF7X3_DIT_CTRL, 0x0002, val);
}

static int patch_yamaha_ymf7x3_3d(struct snd_ac97 *ac97)
{
	struct snd_kcontrol *kctl;
	int err;

	kctl = snd_ac97_cnew(&snd_ac97_controls_3d[0], ac97);
	err = snd_ctl_add(ac97->bus->card, kctl);
	if (err < 0)
		return err;
	strcpy(kctl->id.name, "3D Control - Wide");
	kctl->private_value = AC97_SINGLE_VALUE(AC97_3D_CONTROL, 9, 7, 0);
	snd_ac97_write_cache(ac97, AC97_3D_CONTROL, 0x0000);
	err = snd_ctl_add(ac97->bus->card,
			  snd_ac97_cnew(&snd_ac97_ymf7x3_controls_speaker,
					ac97));
	if (err < 0)
		return err;
	snd_ac97_write_cache(ac97, AC97_YMF7X3_3D_MODE_SEL, 0x0c00);
	return 0;
}

static const struct snd_kcontrol_new snd_ac97_yamaha_ymf743_controls_spdif[3] =
{
	AC97_SINGLE(SNDRV_CTL_NAME_IEC958("", PLAYBACK, SWITCH),
		    AC97_YMF7X3_DIT_CTRL, 0, 1, 0),
	{
		.iface	= SNDRV_CTL_ELEM_IFACE_MIXER,
		.name	= SNDRV_CTL_NAME_IEC958("", PLAYBACK, NONE) "Source",
		.info	= snd_ac97_ymf7x3_spdif_source_info,
		.get	= snd_ac97_ymf7x3_spdif_source_get,
		.put	= snd_ac97_ymf7x3_spdif_source_put,
	},
	AC97_SINGLE(SNDRV_CTL_NAME_IEC958("", NONE, NONE) "Mute",
		    AC97_YMF7X3_DIT_CTRL, 2, 1, 1)
};

static int patch_yamaha_ymf743_build_spdif(struct snd_ac97 *ac97)
{
	int err;

	err = patch_build_controls(ac97, &snd_ac97_controls_spdif[0], 3);
	if (err < 0)
		return err;
	err = patch_build_controls(ac97,
				   snd_ac97_yamaha_ymf743_controls_spdif, 3);
	if (err < 0)
		return err;
	/* set default PCM S/PDIF params */
	/* PCM audio,no copyright,no preemphasis,PCM coder,original */
	snd_ac97_write_cache(ac97, AC97_YMF7X3_DIT_CTRL, 0xa201);
	return 0;
}

static struct snd_ac97_build_ops patch_yamaha_ymf743_ops = {
	.build_spdif	= patch_yamaha_ymf743_build_spdif,
	.build_3d	= patch_yamaha_ymf7x3_3d,
};

static int patch_yamaha_ymf743(struct snd_ac97 *ac97)
{
	ac97->build_ops = &patch_yamaha_ymf743_ops;
	ac97->caps |= AC97_BC_BASS_TREBLE;
	ac97->caps |= 0x04 << 10; /* Yamaha 3D enhancement */
	ac97->rates[AC97_RATES_SPDIF] = SNDRV_PCM_RATE_48000; /* 48k only */
	ac97->ext_id |= AC97_EI_SPDIF; /* force the detection of spdif */
	return 0;
}

/* The AC'97 spec states that the S/PDIF signal is to be output at pin 48.
   The YMF753 will output the S/PDIF signal to pin 43, 47 (EAPD), or 48.
   By default, no output pin is selected, and the S/PDIF signal is not output.