[linux.git] / sound / ppc / daca.c

/*
 * PMac DACA lowlevel functions
 *
 * Copyright (c) by Takashi Iwai <[email protected]>
 *
 *   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 <linux/init.h>
#include <linux/i2c.h>
#include <linux/kmod.h>
#include <linux/slab.h>
#include <sound/core.h>
#include "pmac.h"

/* i2c address */
#define DACA_I2C_ADDR	0x4d

/* registers */
#define DACA_REG_SR	0x01
#define DACA_REG_AVOL	0x02
#define DACA_REG_GCFG	0x03

/* maximum volume value */
#define DACA_VOL_MAX	0x38


struct pmac_daca {
	struct pmac_keywest i2c;
	int left_vol, right_vol;
	unsigned int deemphasis : 1;
	unsigned int amp_on : 1;
};


/*
 * initialize / detect DACA
 */
static int daca_init_client(struct pmac_keywest *i2c)
{
	unsigned short wdata = 0x00;
	/* SR: no swap, 1bit delay, 32-48kHz */
	/* GCFG: power amp inverted, DAC on */
	if (i2c_smbus_write_byte_data(i2c->client, DACA_REG_SR, 0x08) < 0 ||
	    i2c_smbus_write_byte_data(i2c->client, DACA_REG_GCFG, 0x05) < 0)
		return -EINVAL;
	return i2c_smbus_write_block_data(i2c->client, DACA_REG_AVOL,
					  2, (unsigned char*)&wdata);
}

/*
 * update volume
 */
static int daca_set_volume(struct pmac_daca *mix)
{
	unsigned char data[2];
  
	if (! mix->i2c.client)
		return -ENODEV;
  
	if (mix->left_vol > DACA_VOL_MAX)
		data[0] = DACA_VOL_MAX;
	else
		data[0] = mix->left_vol;
	if (mix->right_vol > DACA_VOL_MAX)
		data[1] = DACA_VOL_MAX;
	else
		data[1] = mix->right_vol;
	data[1] |= mix->deemphasis ? 0x40 : 0;
	if (i2c_smbus_write_block_data(mix->i2c.client, DACA_REG_AVOL,
				       2, data) < 0) {
		snd_printk(KERN_ERR "failed to set volume \n");
		return -EINVAL;
	}
	return 0;
}


/* deemphasis switch */
#define daca_info_deemphasis		snd_ctl_boolean_mono_info

static int daca_get_deemphasis(struct snd_kcontrol *kcontrol,
			       struct snd_ctl_elem_value *ucontrol)
{
	struct snd_pmac *chip = snd_kcontrol_chip(kcontrol);
	struct pmac_daca *mix;
	if (! (mix = chip->mixer_data))
		return -ENODEV;
	ucontrol->value.integer.value[0] = mix->deemphasis ? 1 : 0;
	return 0;
}

static int daca_put_deemphasis(struct snd_kcontrol *kcontrol,
			       struct snd_ctl_elem_value *ucontrol)
{
	struct snd_pmac *chip = snd_kcontrol_chip(kcontrol);
	struct pmac_daca *mix;
	int change;

	if (! (mix = chip->mixer_data))
		return -ENODEV;
	change = mix->deemphasis != ucontrol->value.integer.value[0];
	if (change) {
		mix->deemphasis = !!ucontrol->value.integer.value[0];
		daca_set_volume(mix);
	}
	return change;
}

/* output volume */
static int daca_info_volume(struct snd_kcontrol *kcontrol,
			    struct snd_ctl_elem_info *uinfo)
{
	uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
	uinfo->count = 2;
	uinfo->value.integer.min = 0;
	uinfo->value.integer.max = DACA_VOL_MAX;
	return 0;
}

static int daca_get_volume(struct snd_kcontrol *kcontrol,
			   struct snd_ctl_elem_value *ucontrol)
{
	struct snd_pmac *chip = snd_kcontrol_chip(kcontrol);
	struct pmac_daca *mix;
	if (! (mix = chip->mixer_data))
		return -ENODEV;
	ucontrol->value.integer.value[0] = mix->left_vol;
	ucontrol->value.integer.value[1] = mix->right_vol;
	return 0;
}

static int daca_put_volume(struct snd_kcontrol *kcontrol,
			   struct snd_ctl_elem_value *ucontrol)
{
	struct snd_pmac *chip = snd_kcontrol_chip(kcontrol);
	struct pmac_daca *mix;
	unsigned int vol[2];
	int change;

	if (! (mix = chip->mixer_data))
		return -ENODEV;
	vol[0] = ucontrol->value.integer.value[0];
	vol[1] = ucontrol->value.integer.value[1];
	if (vol[0] > DACA_VOL_MAX || vol[1] > DACA_VOL_MAX)
		return -EINVAL;
	change = mix->left_vol != vol[0] ||
		mix->right_vol != vol[1];
	if (change) {
		mix->left_vol = vol[0];
		mix->right_vol = vol[1];
		daca_set_volume(mix);
	}
	return change;
}

/* amplifier switch */
#define daca_info_amp	daca_info_deemphasis

static int daca_get_amp(struct snd_kcontrol *kcontrol,
			struct snd_ctl_elem_value *ucontrol)
{
	struct snd_pmac *chip = snd_kcontrol_chip(kcontrol);
	struct pmac_daca *mix;
	if (! (mix = chip->mixer_data))
		return -ENODEV;
	ucontrol->value.integer.value[0] = mix->amp_on ? 1 : 0;
	return 0;
}

static int daca_put_amp(struct snd_kcontrol *kcontrol,
			struct snd_ctl_elem_value *ucontrol)
{
	struct snd_pmac *chip = snd_kcontrol_chip(kcontrol);
	struct pmac_daca *mix;
	int change;

	if (! (mix = chip->mixer_data))
		return -ENODEV;
	change = mix->amp_on != ucontrol->value.integer.value[0];
	if (change) {
		mix->amp_on = !!ucontrol->value.integer.value[0];
		i2c_smbus_write_byte_data(mix->i2c.client, DACA_REG_GCFG,
					  mix->amp_on ? 0x05 : 0x04);
	}
	return change;
}

static struct snd_kcontrol_new daca_mixers[] = {
	{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
	  .name = "Deemphasis Switch",
	  .info = daca_info_deemphasis,
	  .get = daca_get_deemphasis,
	  .put = daca_put_deemphasis
	},
	{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
	  .name = "Master Playback Volume",
	  .info = daca_info_volume,
	  .get = daca_get_volume,
	  .put = daca_put_volume
	},
	{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
	  .name = "Power Amplifier Switch",
	  .info = daca_info_amp,
	  .get = daca_get_amp,
	  .put = daca_put_amp
	},
};


#ifdef CONFIG_PM
static void daca_resume(struct snd_pmac *chip)
{
	struct pmac_daca *mix = chip->mixer_data;
	i2c_smbus_write_byte_data(mix->i2c.client, DACA_REG_SR, 0x08);
	i2c_smbus_write_byte_data(mix->i2c.client, DACA_REG_GCFG,
				  mix->amp_on ? 0x05 : 0x04);
	daca_set_volume(mix);
}
#endif /* CONFIG_PM */


static void daca_cleanup(struct snd_pmac *chip)
{
	struct pmac_daca *mix = chip->mixer_data;
	if (! mix)
		return;
	snd_pmac_keywest_cleanup(&mix->i2c);
	kfree(mix);
	chip->mixer_data = NULL;
}

/* exported */
int snd_pmac_daca_init(struct snd_pmac *chip)
{
	int i, err;
	struct pmac_daca *mix;

	request_module("i2c-powermac");

	mix = kzalloc(sizeof(*mix), GFP_KERNEL);
	if (! mix)
		return -ENOMEM;
	chip->mixer_data = mix;
	chip->mixer_free = daca_cleanup;
	mix->amp_on = 1; /* default on */

	mix->i2c.addr = DACA_I2C_ADDR;
	mix->i2c.init_client = daca_init_client;
	mix->i2c.name = "DACA";
	if ((err = snd_pmac_keywest_init(&mix->i2c)) < 0)
		return err;

	/*
	 * build mixers
	 */
	strcpy(chip->card->mixername, "PowerMac DACA");

	for (i = 0; i < ARRAY_SIZE(daca_mixers); i++) {
		if ((err = snd_ctl_add(chip->card, snd_ctl_new1(&daca_mixers[i], chip))) < 0)
			return err;
	}

#ifdef CONFIG_PM
	chip->resume = daca_resume;
#endif

	return 0;
}
Commit	Line	Data
1da177e4 LT	1	/*
	2	* PMac DACA lowlevel functions
	3	*
	4	* Copyright (c) by Takashi Iwai <[email protected]>
	5	*
	6	* This program is free software; you can redistribute it and/or modify
	7	* it under the terms of the GNU General Public License as published by
	8	* the Free Software Foundation; either version 2 of the License, or
	9	* (at your option) any later version.
	10	*
	11	* This program is distributed in the hope that it will be useful,
	12	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	13	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	14	* GNU General Public License for more details.
	15	*
	16	* You should have received a copy of the GNU General Public License
	17	* along with this program; if not, write to the Free Software
	18	* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
	19	*/
	20
	21
1da177e4 LT	22	#include <linux/init.h>
1da177e4 LT	23	#include <linux/i2c.h>
1da177e4 LT	24	#include <linux/kmod.h>
	25	#include <linux/slab.h>
	26	#include <sound/core.h>
	27	#include "pmac.h"
	28
	29	/* i2c address */
	30	#define DACA_I2C_ADDR 0x4d
	31
	32	/* registers */
	33	#define DACA_REG_SR 0x01
	34	#define DACA_REG_AVOL 0x02
	35	#define DACA_REG_GCFG 0x03
	36
	37	/* maximum volume value */
	38	#define DACA_VOL_MAX 0x38
	39
	40
65b29f50 TI	41	struct pmac_daca {
65b29f50 TI	42	struct pmac_keywest i2c;
1da177e4 LT	43	int left_vol, right_vol;
	44	unsigned int deemphasis : 1;
	45	unsigned int amp_on : 1;
65b29f50	46	};
1da177e4 LT	47
	48
	49	/*
	50	* initialize / detect DACA
	51	*/
65b29f50	52	static int daca_init_client(struct pmac_keywest *i2c)
1da177e4 LT	53	{
	54	unsigned short wdata = 0x00;
	55	/* SR: no swap, 1bit delay, 32-48kHz */
	56	/* GCFG: power amp inverted, DAC on */
	57	if (i2c_smbus_write_byte_data(i2c->client, DACA_REG_SR, 0x08) < 0 \|\|
	58	i2c_smbus_write_byte_data(i2c->client, DACA_REG_GCFG, 0x05) < 0)
	59	return -EINVAL;
	60	return i2c_smbus_write_block_data(i2c->client, DACA_REG_AVOL,
	61	2, (unsigned char*)&wdata);
	62	}
	63
	64	/*
	65	* update volume
	66	*/
65b29f50	67	static int daca_set_volume(struct pmac_daca *mix)
1da177e4 LT	68	{
	69	unsigned char data[2];
	70
	71	if (! mix->i2c.client)
	72	return -ENODEV;
	73
	74	if (mix->left_vol > DACA_VOL_MAX)
	75	data[0] = DACA_VOL_MAX;
	76	else
	77	data[0] = mix->left_vol;
	78	if (mix->right_vol > DACA_VOL_MAX)
	79	data[1] = DACA_VOL_MAX;
	80	else
	81	data[1] = mix->right_vol;
	82	data[1] \|= mix->deemphasis ? 0x40 : 0;
	83	if (i2c_smbus_write_block_data(mix->i2c.client, DACA_REG_AVOL,
	84	2, data) < 0) {
6da67113	85	snd_printk(KERN_ERR "failed to set volume \n");
1da177e4 LT	86	return -EINVAL;
	87	}
	88	return 0;
	89	}
	90
	91
	92	/* deemphasis switch */
a5ce8890	93	#define daca_info_deemphasis snd_ctl_boolean_mono_info
1da177e4	94
65b29f50 TI	95	static int daca_get_deemphasis(struct snd_kcontrol *kcontrol,
65b29f50 TI	96	struct snd_ctl_elem_value *ucontrol)
1da177e4	97	{
65b29f50 TI	98	struct snd_pmac *chip = snd_kcontrol_chip(kcontrol);
65b29f50 TI	99	struct pmac_daca *mix;
1da177e4 LT	100	if (! (mix = chip->mixer_data))
	101	return -ENODEV;
	102	ucontrol->value.integer.value[0] = mix->deemphasis ? 1 : 0;
	103	return 0;
	104	}
	105
65b29f50 TI	106	static int daca_put_deemphasis(struct snd_kcontrol *kcontrol,
65b29f50 TI	107	struct snd_ctl_elem_value *ucontrol)
1da177e4	108	{
65b29f50 TI	109	struct snd_pmac *chip = snd_kcontrol_chip(kcontrol);
65b29f50 TI	110	struct pmac_daca *mix;
1da177e4 LT	111	int change;
	112
	113	if (! (mix = chip->mixer_data))
	114	return -ENODEV;
	115	change = mix->deemphasis != ucontrol->value.integer.value[0];
	116	if (change) {
d4079ac4	117	mix->deemphasis = !!ucontrol->value.integer.value[0];
1da177e4 LT	118	daca_set_volume(mix);
	119	}
	120	return change;
	121	}
	122
	123	/* output volume */
65b29f50 TI	124	static int daca_info_volume(struct snd_kcontrol *kcontrol,
65b29f50 TI	125	struct snd_ctl_elem_info *uinfo)
1da177e4 LT	126	{
	127	uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
	128	uinfo->count = 2;
	129	uinfo->value.integer.min = 0;
	130	uinfo->value.integer.max = DACA_VOL_MAX;
	131	return 0;
	132	}
	133
65b29f50 TI	134	static int daca_get_volume(struct snd_kcontrol *kcontrol,
65b29f50 TI	135	struct snd_ctl_elem_value *ucontrol)
1da177e4	136	{
65b29f50 TI	137	struct snd_pmac *chip = snd_kcontrol_chip(kcontrol);
65b29f50 TI	138	struct pmac_daca *mix;
1da177e4 LT	139	if (! (mix = chip->mixer_data))
	140	return -ENODEV;
	141	ucontrol->value.integer.value[0] = mix->left_vol;
	142	ucontrol->value.integer.value[1] = mix->right_vol;
	143	return 0;
	144	}
	145
65b29f50 TI	146	static int daca_put_volume(struct snd_kcontrol *kcontrol,
65b29f50 TI	147	struct snd_ctl_elem_value *ucontrol)
1da177e4	148	{
65b29f50 TI	149	struct snd_pmac *chip = snd_kcontrol_chip(kcontrol);
65b29f50 TI	150	struct pmac_daca *mix;
d4079ac4	151	unsigned int vol[2];
1da177e4 LT	152	int change;
	153
	154	if (! (mix = chip->mixer_data))
	155	return -ENODEV;
d4079ac4 TI	156	vol[0] = ucontrol->value.integer.value[0];
	157	vol[1] = ucontrol->value.integer.value[1];
	158	if (vol[0] > DACA_VOL_MAX \|\| vol[1] > DACA_VOL_MAX)
	159	return -EINVAL;
	160	change = mix->left_vol != vol[0] \|\|
	161	mix->right_vol != vol[1];
1da177e4	162	if (change) {
d4079ac4 TI	163	mix->left_vol = vol[0];
d4079ac4 TI	164	mix->right_vol = vol[1];
1da177e4 LT	165	daca_set_volume(mix);
	166	}
	167	return change;
	168	}
	169
	170	/* amplifier switch */
	171	#define daca_info_amp daca_info_deemphasis
	172
65b29f50 TI	173	static int daca_get_amp(struct snd_kcontrol *kcontrol,
65b29f50 TI	174	struct snd_ctl_elem_value *ucontrol)
1da177e4	175	{
65b29f50 TI	176	struct snd_pmac *chip = snd_kcontrol_chip(kcontrol);
65b29f50 TI	177	struct pmac_daca *mix;
1da177e4 LT	178	if (! (mix = chip->mixer_data))
	179	return -ENODEV;
	180	ucontrol->value.integer.value[0] = mix->amp_on ? 1 : 0;
	181	return 0;
	182	}
	183
65b29f50 TI	184	static int daca_put_amp(struct snd_kcontrol *kcontrol,
65b29f50 TI	185	struct snd_ctl_elem_value *ucontrol)
1da177e4	186	{
65b29f50 TI	187	struct snd_pmac *chip = snd_kcontrol_chip(kcontrol);
65b29f50 TI	188	struct pmac_daca *mix;
1da177e4 LT	189	int change;
	190
	191	if (! (mix = chip->mixer_data))
	192	return -ENODEV;
	193	change = mix->amp_on != ucontrol->value.integer.value[0];
	194	if (change) {
d4079ac4	195	mix->amp_on = !!ucontrol->value.integer.value[0];
1da177e4 LT	196	i2c_smbus_write_byte_data(mix->i2c.client, DACA_REG_GCFG,
	197	mix->amp_on ? 0x05 : 0x04);
	198	}
	199	return change;
	200	}
	201
65b29f50	202	static struct snd_kcontrol_new daca_mixers[] = {
1da177e4 LT	203	{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
	204	.name = "Deemphasis Switch",
	205	.info = daca_info_deemphasis,
	206	.get = daca_get_deemphasis,
	207	.put = daca_put_deemphasis
	208	},
	209	{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
	210	.name = "Master Playback Volume",
	211	.info = daca_info_volume,
	212	.get = daca_get_volume,
	213	.put = daca_put_volume
	214	},
	215	{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
	216	.name = "Power Amplifier Switch",
	217	.info = daca_info_amp,
	218	.get = daca_get_amp,
	219	.put = daca_put_amp
	220	},
	221	};
	222
	223
8c870933	224	#ifdef CONFIG_PM
65b29f50	225	static void daca_resume(struct snd_pmac *chip)
1da177e4	226	{
65b29f50	227	struct pmac_daca *mix = chip->mixer_data;
1da177e4 LT	228	i2c_smbus_write_byte_data(mix->i2c.client, DACA_REG_SR, 0x08);
	229	i2c_smbus_write_byte_data(mix->i2c.client, DACA_REG_GCFG,
	230	mix->amp_on ? 0x05 : 0x04);
	231	daca_set_volume(mix);
	232	}
8c870933	233	#endif /* CONFIG_PM */
1da177e4 LT	234
1da177e4 LT	235
65b29f50	236	static void daca_cleanup(struct snd_pmac *chip)
1da177e4	237	{
65b29f50	238	struct pmac_daca *mix = chip->mixer_data;
1da177e4 LT	239	if (! mix)
	240	return;
	241	snd_pmac_keywest_cleanup(&mix->i2c);
	242	kfree(mix);
	243	chip->mixer_data = NULL;
	244	}
	245
	246	/* exported */
15afafc2	247	int snd_pmac_daca_init(struct snd_pmac *chip)
1da177e4 LT	248	{
1da177e4 LT	249	int i, err;
65b29f50	250	struct pmac_daca *mix;
1da177e4	251
0d63e4f9	252	request_module("i2c-powermac");
1da177e4	253
59feddb2	254	mix = kzalloc(sizeof(*mix), GFP_KERNEL);
1da177e4 LT	255	if (! mix)
1da177e4 LT	256	return -ENOMEM;
1da177e4 LT	257	chip->mixer_data = mix;
	258	chip->mixer_free = daca_cleanup;
	259	mix->amp_on = 1; /* default on */
	260
	261	mix->i2c.addr = DACA_I2C_ADDR;
	262	mix->i2c.init_client = daca_init_client;
	263	mix->i2c.name = "DACA";
	264	if ((err = snd_pmac_keywest_init(&mix->i2c)) < 0)
	265	return err;
	266
	267	/*
	268	* build mixers
	269	*/
	270	strcpy(chip->card->mixername, "PowerMac DACA");
	271
	272	for (i = 0; i < ARRAY_SIZE(daca_mixers); i++) {
	273	if ((err = snd_ctl_add(chip->card, snd_ctl_new1(&daca_mixers[i], chip))) < 0)
	274	return err;
	275	}
	276
8c870933	277	#ifdef CONFIG_PM
1da177e4 LT	278	chip->resume = daca_resume;
	279	#endif
	280
	281	return 0;
	282	}