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

// SPDX-License-Identifier: GPL-2.0-or-later
/*
 * PMac DACA lowlevel functions
 *
 * Copyright (c) by Takashi Iwai <tiwai@suse.de>
 */


#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;
	mix = chip->mixer_data;
	if (!mix)
		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;

	mix = chip->mixer_data;
	if (!mix)
		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;
	mix = chip->mixer_data;
	if (!mix)
		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;

	mix = chip->mixer_data;
	if (!mix)
		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;
	mix = chip->mixer_data;
	if (!mix)
		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;

	mix = chip->mixer_data;
	if (!mix)
		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 const 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";
	err = snd_pmac_keywest_init(&mix->i2c);
	if (err < 0)
		return err;

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

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

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

	return 0;
}
Commit	Line	Data
1a59d1b8	1	// SPDX-License-Identifier: GPL-2.0-or-later
1da177e4 LT	2	/*
	3	* PMac DACA lowlevel functions
	4	*
	5	* Copyright (c) by Takashi Iwai <tiwai@suse.de>
1da177e4 LT	6	*/
	7
	8
1da177e4 LT	9	#include <linux/init.h>
1da177e4 LT	10	#include <linux/i2c.h>
1da177e4 LT	11	#include <linux/kmod.h>
	12	#include <linux/slab.h>
	13	#include <sound/core.h>
	14	#include "pmac.h"
	15
	16	/* i2c address */
	17	#define DACA_I2C_ADDR 0x4d
	18
	19	/* registers */
	20	#define DACA_REG_SR 0x01
	21	#define DACA_REG_AVOL 0x02
	22	#define DACA_REG_GCFG 0x03
	23
	24	/* maximum volume value */
	25	#define DACA_VOL_MAX 0x38
	26
	27
65b29f50 TI	28	struct pmac_daca {
65b29f50 TI	29	struct pmac_keywest i2c;
1da177e4 LT	30	int left_vol, right_vol;
	31	unsigned int deemphasis : 1;
	32	unsigned int amp_on : 1;
65b29f50	33	};
1da177e4 LT	34
	35
	36	/*
	37	* initialize / detect DACA
	38	*/
65b29f50	39	static int daca_init_client(struct pmac_keywest *i2c)
1da177e4 LT	40	{
	41	unsigned short wdata = 0x00;
	42	/* SR: no swap, 1bit delay, 32-48kHz */
	43	/* GCFG: power amp inverted, DAC on */
	44	if (i2c_smbus_write_byte_data(i2c->client, DACA_REG_SR, 0x08) < 0 \|\|
	45	i2c_smbus_write_byte_data(i2c->client, DACA_REG_GCFG, 0x05) < 0)
	46	return -EINVAL;
	47	return i2c_smbus_write_block_data(i2c->client, DACA_REG_AVOL,
	48	2, (unsigned char*)&wdata);
	49	}
	50
	51	/*
	52	* update volume
	53	*/
65b29f50	54	static int daca_set_volume(struct pmac_daca *mix)
1da177e4 LT	55	{
	56	unsigned char data[2];
	57
	58	if (! mix->i2c.client)
	59	return -ENODEV;
	60
	61	if (mix->left_vol > DACA_VOL_MAX)
	62	data[0] = DACA_VOL_MAX;
	63	else
	64	data[0] = mix->left_vol;
	65	if (mix->right_vol > DACA_VOL_MAX)
	66	data[1] = DACA_VOL_MAX;
	67	else
	68	data[1] = mix->right_vol;
	69	data[1] \|= mix->deemphasis ? 0x40 : 0;
	70	if (i2c_smbus_write_block_data(mix->i2c.client, DACA_REG_AVOL,
	71	2, data) < 0) {
6da67113	72	snd_printk(KERN_ERR "failed to set volume \n");
1da177e4 LT	73	return -EINVAL;
	74	}
	75	return 0;
	76	}
	77
	78
	79	/* deemphasis switch */
a5ce8890	80	#define daca_info_deemphasis snd_ctl_boolean_mono_info
1da177e4	81
65b29f50 TI	82	static int daca_get_deemphasis(struct snd_kcontrol *kcontrol,
65b29f50 TI	83	struct snd_ctl_elem_value *ucontrol)
1da177e4	84	{
65b29f50 TI	85	struct snd_pmac *chip = snd_kcontrol_chip(kcontrol);
65b29f50 TI	86	struct pmac_daca *mix;
e73ad388 TI	87	mix = chip->mixer_data;
e73ad388 TI	88	if (!mix)
1da177e4 LT	89	return -ENODEV;
	90	ucontrol->value.integer.value[0] = mix->deemphasis ? 1 : 0;
	91	return 0;
	92	}
	93
65b29f50 TI	94	static int daca_put_deemphasis(struct snd_kcontrol *kcontrol,
65b29f50 TI	95	struct snd_ctl_elem_value *ucontrol)
1da177e4	96	{
65b29f50 TI	97	struct snd_pmac *chip = snd_kcontrol_chip(kcontrol);
65b29f50 TI	98	struct pmac_daca *mix;
1da177e4 LT	99	int change;
1da177e4 LT	100
e73ad388 TI	101	mix = chip->mixer_data;
e73ad388 TI	102	if (!mix)
1da177e4 LT	103	return -ENODEV;
	104	change = mix->deemphasis != ucontrol->value.integer.value[0];
	105	if (change) {
d4079ac4	106	mix->deemphasis = !!ucontrol->value.integer.value[0];
1da177e4 LT	107	daca_set_volume(mix);
	108	}
	109	return change;
	110	}
	111
	112	/* output volume */
65b29f50 TI	113	static int daca_info_volume(struct snd_kcontrol *kcontrol,
65b29f50 TI	114	struct snd_ctl_elem_info *uinfo)
1da177e4 LT	115	{
	116	uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER;
	117	uinfo->count = 2;
	118	uinfo->value.integer.min = 0;
	119	uinfo->value.integer.max = DACA_VOL_MAX;
	120	return 0;
	121	}
	122
65b29f50 TI	123	static int daca_get_volume(struct snd_kcontrol *kcontrol,
65b29f50 TI	124	struct snd_ctl_elem_value *ucontrol)
1da177e4	125	{
65b29f50 TI	126	struct snd_pmac *chip = snd_kcontrol_chip(kcontrol);
65b29f50 TI	127	struct pmac_daca *mix;
e73ad388 TI	128	mix = chip->mixer_data;
e73ad388 TI	129	if (!mix)
1da177e4 LT	130	return -ENODEV;
	131	ucontrol->value.integer.value[0] = mix->left_vol;
	132	ucontrol->value.integer.value[1] = mix->right_vol;
	133	return 0;
	134	}
	135
65b29f50 TI	136	static int daca_put_volume(struct snd_kcontrol *kcontrol,
65b29f50 TI	137	struct snd_ctl_elem_value *ucontrol)
1da177e4	138	{
65b29f50 TI	139	struct snd_pmac *chip = snd_kcontrol_chip(kcontrol);
65b29f50 TI	140	struct pmac_daca *mix;
d4079ac4	141	unsigned int vol[2];
1da177e4 LT	142	int change;
1da177e4 LT	143
e73ad388 TI	144	mix = chip->mixer_data;
e73ad388 TI	145	if (!mix)
1da177e4	146	return -ENODEV;
d4079ac4 TI	147	vol[0] = ucontrol->value.integer.value[0];
	148	vol[1] = ucontrol->value.integer.value[1];
	149	if (vol[0] > DACA_VOL_MAX \|\| vol[1] > DACA_VOL_MAX)
	150	return -EINVAL;
	151	change = mix->left_vol != vol[0] \|\|
	152	mix->right_vol != vol[1];
1da177e4	153	if (change) {
d4079ac4 TI	154	mix->left_vol = vol[0];
d4079ac4 TI	155	mix->right_vol = vol[1];
1da177e4 LT	156	daca_set_volume(mix);
	157	}
	158	return change;
	159	}
	160
	161	/* amplifier switch */
	162	#define daca_info_amp daca_info_deemphasis
	163
65b29f50 TI	164	static int daca_get_amp(struct snd_kcontrol *kcontrol,
65b29f50 TI	165	struct snd_ctl_elem_value *ucontrol)
1da177e4	166	{
65b29f50 TI	167	struct snd_pmac *chip = snd_kcontrol_chip(kcontrol);
65b29f50 TI	168	struct pmac_daca *mix;
e73ad388 TI	169	mix = chip->mixer_data;
e73ad388 TI	170	if (!mix)
1da177e4 LT	171	return -ENODEV;
	172	ucontrol->value.integer.value[0] = mix->amp_on ? 1 : 0;
	173	return 0;
	174	}
	175
65b29f50 TI	176	static int daca_put_amp(struct snd_kcontrol *kcontrol,
65b29f50 TI	177	struct snd_ctl_elem_value *ucontrol)
1da177e4	178	{
65b29f50 TI	179	struct snd_pmac *chip = snd_kcontrol_chip(kcontrol);
65b29f50 TI	180	struct pmac_daca *mix;
1da177e4 LT	181	int change;
1da177e4 LT	182
e73ad388 TI	183	mix = chip->mixer_data;
e73ad388 TI	184	if (!mix)
1da177e4 LT	185	return -ENODEV;
	186	change = mix->amp_on != ucontrol->value.integer.value[0];
	187	if (change) {
d4079ac4	188	mix->amp_on = !!ucontrol->value.integer.value[0];
1da177e4 LT	189	i2c_smbus_write_byte_data(mix->i2c.client, DACA_REG_GCFG,
	190	mix->amp_on ? 0x05 : 0x04);
	191	}
	192	return change;
	193	}
	194
c031b0cc	195	static const struct snd_kcontrol_new daca_mixers[] = {
1da177e4 LT	196	{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
	197	.name = "Deemphasis Switch",
	198	.info = daca_info_deemphasis,
	199	.get = daca_get_deemphasis,
	200	.put = daca_put_deemphasis
	201	},
	202	{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
	203	.name = "Master Playback Volume",
	204	.info = daca_info_volume,
	205	.get = daca_get_volume,
	206	.put = daca_put_volume
	207	},
	208	{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
	209	.name = "Power Amplifier Switch",
	210	.info = daca_info_amp,
	211	.get = daca_get_amp,
	212	.put = daca_put_amp
	213	},
	214	};
	215
	216
8c870933	217	#ifdef CONFIG_PM
65b29f50	218	static void daca_resume(struct snd_pmac *chip)
1da177e4	219	{
65b29f50	220	struct pmac_daca *mix = chip->mixer_data;
1da177e4 LT	221	i2c_smbus_write_byte_data(mix->i2c.client, DACA_REG_SR, 0x08);
	222	i2c_smbus_write_byte_data(mix->i2c.client, DACA_REG_GCFG,
	223	mix->amp_on ? 0x05 : 0x04);
	224	daca_set_volume(mix);
	225	}
8c870933	226	#endif /* CONFIG_PM */
1da177e4 LT	227
1da177e4 LT	228
65b29f50	229	static void daca_cleanup(struct snd_pmac *chip)
1da177e4	230	{
65b29f50	231	struct pmac_daca *mix = chip->mixer_data;
1da177e4 LT	232	if (! mix)
	233	return;
	234	snd_pmac_keywest_cleanup(&mix->i2c);
	235	kfree(mix);
	236	chip->mixer_data = NULL;
	237	}
	238
	239	/* exported */
15afafc2	240	int snd_pmac_daca_init(struct snd_pmac *chip)
1da177e4 LT	241	{
1da177e4 LT	242	int i, err;
65b29f50	243	struct pmac_daca *mix;
1da177e4	244
0d63e4f9	245	request_module("i2c-powermac");
1da177e4	246
59feddb2	247	mix = kzalloc(sizeof(*mix), GFP_KERNEL);
1da177e4 LT	248	if (! mix)
1da177e4 LT	249	return -ENOMEM;
1da177e4 LT	250	chip->mixer_data = mix;
	251	chip->mixer_free = daca_cleanup;
	252	mix->amp_on = 1; /* default on */
	253
	254	mix->i2c.addr = DACA_I2C_ADDR;
	255	mix->i2c.init_client = daca_init_client;
	256	mix->i2c.name = "DACA";
e73ad388 TI	257	err = snd_pmac_keywest_init(&mix->i2c);
e73ad388 TI	258	if (err < 0)
1da177e4 LT	259	return err;
	260
	261	/*
	262	* build mixers
	263	*/
	264	strcpy(chip->card->mixername, "PowerMac DACA");
	265
	266	for (i = 0; i < ARRAY_SIZE(daca_mixers); i++) {
e73ad388 TI	267	err = snd_ctl_add(chip->card, snd_ctl_new1(&daca_mixers[i], chip));
e73ad388 TI	268	if (err < 0)
1da177e4 LT	269	return err;
	270	}
	271
8c870933	272	#ifdef CONFIG_PM
1da177e4 LT	273	chip->resume = daca_resume;
	274	#endif
	275
	276	return 0;
	277	}