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

/*
 * PMac DACA lowlevel functions
 *
 * Copyright (c) by Takashi Iwai <tiwai@suse.de>
 *
 *   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 <sound/driver.h>
#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("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;
	int change;

	if (! (mix = chip->mixer_data))
		return -ENODEV;
	change = mix->left_vol != ucontrol->value.integer.value[0] ||
		mix->right_vol != ucontrol->value.integer.value[1];
	if (change) {
		mix->left_vol = ucontrol->value.integer.value[0];
		mix->right_vol = ucontrol->value.integer.value[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 __init snd_pmac_daca_init(struct snd_pmac *chip)
{
	int i, err;
	struct pmac_daca *mix;

#ifdef CONFIG_KMOD
	if (current->fs->root)
		request_module("i2c-powermac");
#endif /* CONFIG_KMOD */	

	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 <tiwai@suse.de>
	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
	22	#include <sound/driver.h>
	23	#include <linux/init.h>
	24	#include <linux/i2c.h>
1da177e4 LT	25	#include <linux/kmod.h>
	26	#include <linux/slab.h>
	27	#include <sound/core.h>
	28	#include "pmac.h"
	29
	30	/* i2c address */
	31	#define DACA_I2C_ADDR 0x4d
	32
	33	/* registers */
	34	#define DACA_REG_SR 0x01
	35	#define DACA_REG_AVOL 0x02
	36	#define DACA_REG_GCFG 0x03
	37
	38	/* maximum volume value */
	39	#define DACA_VOL_MAX 0x38
	40
	41
65b29f50 TI	42	struct pmac_daca {
65b29f50 TI	43	struct pmac_keywest i2c;
1da177e4 LT	44	int left_vol, right_vol;
	45	unsigned int deemphasis : 1;
	46	unsigned int amp_on : 1;
65b29f50	47	};
1da177e4 LT	48
	49
	50	/*
	51	* initialize / detect DACA
	52	*/
65b29f50	53	static int daca_init_client(struct pmac_keywest *i2c)
1da177e4 LT	54	{
	55	unsigned short wdata = 0x00;
	56	/* SR: no swap, 1bit delay, 32-48kHz */
	57	/* GCFG: power amp inverted, DAC on */
	58	if (i2c_smbus_write_byte_data(i2c->client, DACA_REG_SR, 0x08) < 0 \|\|
	59	i2c_smbus_write_byte_data(i2c->client, DACA_REG_GCFG, 0x05) < 0)
	60	return -EINVAL;
	61	return i2c_smbus_write_block_data(i2c->client, DACA_REG_AVOL,
	62	2, (unsigned char*)&wdata);
	63	}
	64
	65	/*
	66	* update volume
	67	*/
65b29f50	68	static int daca_set_volume(struct pmac_daca *mix)
1da177e4 LT	69	{
	70	unsigned char data[2];
	71
	72	if (! mix->i2c.client)
	73	return -ENODEV;
	74
	75	if (mix->left_vol > DACA_VOL_MAX)
	76	data[0] = DACA_VOL_MAX;
	77	else
	78	data[0] = mix->left_vol;
	79	if (mix->right_vol > DACA_VOL_MAX)
	80	data[1] = DACA_VOL_MAX;
	81	else
	82	data[1] = mix->right_vol;
	83	data[1] \|= mix->deemphasis ? 0x40 : 0;
	84	if (i2c_smbus_write_block_data(mix->i2c.client, DACA_REG_AVOL,
	85	2, data) < 0) {
	86	snd_printk("failed to set volume \n");
	87	return -EINVAL;
	88	}
	89	return 0;
	90	}
	91
	92
	93	/* deemphasis switch */
a5ce8890	94	#define daca_info_deemphasis snd_ctl_boolean_mono_info
1da177e4	95
65b29f50 TI	96	static int daca_get_deemphasis(struct snd_kcontrol *kcontrol,
65b29f50 TI	97	struct snd_ctl_elem_value *ucontrol)
1da177e4	98	{
65b29f50 TI	99	struct snd_pmac *chip = snd_kcontrol_chip(kcontrol);
65b29f50 TI	100	struct pmac_daca *mix;
1da177e4 LT	101	if (! (mix = chip->mixer_data))
	102	return -ENODEV;
	103	ucontrol->value.integer.value[0] = mix->deemphasis ? 1 : 0;
	104	return 0;
	105	}
	106
65b29f50 TI	107	static int daca_put_deemphasis(struct snd_kcontrol *kcontrol,
65b29f50 TI	108	struct snd_ctl_elem_value *ucontrol)
1da177e4	109	{
65b29f50 TI	110	struct snd_pmac *chip = snd_kcontrol_chip(kcontrol);
65b29f50 TI	111	struct pmac_daca *mix;
1da177e4 LT	112	int change;
	113
	114	if (! (mix = chip->mixer_data))
	115	return -ENODEV;
	116	change = mix->deemphasis != ucontrol->value.integer.value[0];
	117	if (change) {
	118	mix->deemphasis = ucontrol->value.integer.value[0];
	119	daca_set_volume(mix);
	120	}
	121	return change;
	122	}
	123
	124	/* output volume */
65b29f50 TI	125	static int daca_info_volume(struct snd_kcontrol *kcontrol,
65b29f50 TI	126	struct snd_ctl_elem_info *uinfo)
1da177e4 LT	127	{
	128	uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
	129	uinfo->count = 2;
	130	uinfo->value.integer.min = 0;
	131	uinfo->value.integer.max = DACA_VOL_MAX;
	132	return 0;
	133	}
	134
65b29f50 TI	135	static int daca_get_volume(struct snd_kcontrol *kcontrol,
65b29f50 TI	136	struct snd_ctl_elem_value *ucontrol)
1da177e4	137	{
65b29f50 TI	138	struct snd_pmac *chip = snd_kcontrol_chip(kcontrol);
65b29f50 TI	139	struct pmac_daca *mix;
1da177e4 LT	140	if (! (mix = chip->mixer_data))
	141	return -ENODEV;
	142	ucontrol->value.integer.value[0] = mix->left_vol;
	143	ucontrol->value.integer.value[1] = mix->right_vol;
	144	return 0;
	145	}
	146
65b29f50 TI	147	static int daca_put_volume(struct snd_kcontrol *kcontrol,
65b29f50 TI	148	struct snd_ctl_elem_value *ucontrol)
1da177e4	149	{
65b29f50 TI	150	struct snd_pmac *chip = snd_kcontrol_chip(kcontrol);
65b29f50 TI	151	struct pmac_daca *mix;
1da177e4 LT	152	int change;
	153
	154	if (! (mix = chip->mixer_data))
	155	return -ENODEV;
	156	change = mix->left_vol != ucontrol->value.integer.value[0] \|\|
	157	mix->right_vol != ucontrol->value.integer.value[1];
	158	if (change) {
	159	mix->left_vol = ucontrol->value.integer.value[0];
	160	mix->right_vol = ucontrol->value.integer.value[1];
	161	daca_set_volume(mix);
	162	}
	163	return change;
	164	}
	165
	166	/* amplifier switch */
	167	#define daca_info_amp daca_info_deemphasis
	168
65b29f50 TI	169	static int daca_get_amp(struct snd_kcontrol *kcontrol,
65b29f50 TI	170	struct snd_ctl_elem_value *ucontrol)
1da177e4	171	{
65b29f50 TI	172	struct snd_pmac *chip = snd_kcontrol_chip(kcontrol);
65b29f50 TI	173	struct pmac_daca *mix;
1da177e4 LT	174	if (! (mix = chip->mixer_data))
	175	return -ENODEV;
	176	ucontrol->value.integer.value[0] = mix->amp_on ? 1 : 0;
	177	return 0;
	178	}
	179
65b29f50 TI	180	static int daca_put_amp(struct snd_kcontrol *kcontrol,
65b29f50 TI	181	struct snd_ctl_elem_value *ucontrol)
1da177e4	182	{
65b29f50 TI	183	struct snd_pmac *chip = snd_kcontrol_chip(kcontrol);
65b29f50 TI	184	struct pmac_daca *mix;
1da177e4 LT	185	int change;
	186
	187	if (! (mix = chip->mixer_data))
	188	return -ENODEV;
	189	change = mix->amp_on != ucontrol->value.integer.value[0];
	190	if (change) {
	191	mix->amp_on = ucontrol->value.integer.value[0];
	192	i2c_smbus_write_byte_data(mix->i2c.client, DACA_REG_GCFG,
	193	mix->amp_on ? 0x05 : 0x04);
	194	}
	195	return change;
	196	}
	197
65b29f50	198	static struct snd_kcontrol_new daca_mixers[] = {
1da177e4 LT	199	{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
	200	.name = "Deemphasis Switch",
	201	.info = daca_info_deemphasis,
	202	.get = daca_get_deemphasis,
	203	.put = daca_put_deemphasis
	204	},
	205	{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
	206	.name = "Master Playback Volume",
	207	.info = daca_info_volume,
	208	.get = daca_get_volume,
	209	.put = daca_put_volume
	210	},
	211	{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
	212	.name = "Power Amplifier Switch",
	213	.info = daca_info_amp,
	214	.get = daca_get_amp,
	215	.put = daca_put_amp
	216	},
	217	};
	218
	219
8c870933	220	#ifdef CONFIG_PM
65b29f50	221	static void daca_resume(struct snd_pmac *chip)
1da177e4	222	{
65b29f50	223	struct pmac_daca *mix = chip->mixer_data;
1da177e4 LT	224	i2c_smbus_write_byte_data(mix->i2c.client, DACA_REG_SR, 0x08);
	225	i2c_smbus_write_byte_data(mix->i2c.client, DACA_REG_GCFG,
	226	mix->amp_on ? 0x05 : 0x04);
	227	daca_set_volume(mix);
	228	}
8c870933	229	#endif /* CONFIG_PM */
1da177e4 LT	230
1da177e4 LT	231
65b29f50	232	static void daca_cleanup(struct snd_pmac *chip)
1da177e4	233	{
65b29f50	234	struct pmac_daca *mix = chip->mixer_data;
1da177e4 LT	235	if (! mix)
	236	return;
	237	snd_pmac_keywest_cleanup(&mix->i2c);
	238	kfree(mix);
	239	chip->mixer_data = NULL;
	240	}
	241
	242	/* exported */
65b29f50	243	int __init snd_pmac_daca_init(struct snd_pmac *chip)
1da177e4 LT	244	{
1da177e4 LT	245	int i, err;
65b29f50	246	struct pmac_daca *mix;
1da177e4 LT	247
	248	#ifdef CONFIG_KMOD
	249	if (current->fs->root)
4d6c5889	250	request_module("i2c-powermac");
1da177e4 LT	251	#endif /* CONFIG_KMOD */
1da177e4 LT	252
59feddb2	253	mix = kzalloc(sizeof(*mix), GFP_KERNEL);
1da177e4 LT	254	if (! mix)
1da177e4 LT	255	return -ENOMEM;
1da177e4 LT	256	chip->mixer_data = mix;
	257	chip->mixer_free = daca_cleanup;
	258	mix->amp_on = 1; /* default on */
	259
	260	mix->i2c.addr = DACA_I2C_ADDR;
	261	mix->i2c.init_client = daca_init_client;
	262	mix->i2c.name = "DACA";
	263	if ((err = snd_pmac_keywest_init(&mix->i2c)) < 0)
	264	return err;
	265
	266	/*
	267	* build mixers
	268	*/
	269	strcpy(chip->card->mixername, "PowerMac DACA");
	270
	271	for (i = 0; i < ARRAY_SIZE(daca_mixers); i++) {
	272	if ((err = snd_ctl_add(chip->card, snd_ctl_new1(&daca_mixers[i], chip))) < 0)
	273	return err;
	274	}
	275
8c870933	276	#ifdef CONFIG_PM
1da177e4 LT	277	chip->resume = daca_resume;
	278	#endif
	279
	280	return 0;
	281	}