[linux-2.6-block.git] / sound / pci / cs5535audio / cs5535audio_olpc.c

/*
 * OLPC XO-1 additional sound features
 *
 * Copyright © 2006  Jaya Kumar <jayakumar.lkml@gmail.com>
 * Copyright © 2007-2008  Andres Salomon <dilinger@debian.org>
 *
 * 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.
 */
#include <sound/core.h>
#include <sound/info.h>
#include <sound/control.h>
#include <sound/ac97_codec.h>
#include <linux/gpio.h>

#include <asm/olpc.h>
#include "cs5535audio.h"

#define DRV_NAME "cs5535audio-olpc"

/*
 * OLPC has an additional feature on top of the regular AD1888 codec features.
 * It has an Analog Input mode that is switched into (after disabling the
 * High Pass Filter) via GPIO.  It is supported on B2 and later models.
 */
void olpc_analog_input(struct snd_ac97 *ac97, int on)
{
	int err;

	if (!machine_is_olpc())
		return;

	/* update the High Pass Filter (via AC97_AD_TEST2) */
	err = snd_ac97_update_bits(ac97, AC97_AD_TEST2,
			1 << AC97_AD_HPFD_SHIFT, on << AC97_AD_HPFD_SHIFT);
	if (err < 0) {
		dev_err(ac97->bus->card->dev,
			"setting High Pass Filter - %d\n", err);
		return;
	}

	/* set Analog Input through GPIO */
	gpio_set_value(OLPC_GPIO_MIC_AC, on);
}

/*
 * OLPC XO-1's V_REFOUT is a mic bias enable.
 */
void olpc_mic_bias(struct snd_ac97 *ac97, int on)
{
	int err;

	if (!machine_is_olpc())
		return;

	on = on ? 0 : 1;
	err = snd_ac97_update_bits(ac97, AC97_AD_MISC,
			1 << AC97_AD_VREFD_SHIFT, on << AC97_AD_VREFD_SHIFT);
	if (err < 0)
		dev_err(ac97->bus->card->dev, "setting MIC Bias - %d\n", err);
}

static int olpc_dc_info(struct snd_kcontrol *kctl,
		struct snd_ctl_elem_info *uinfo)
{
	uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
	uinfo->count = 1;
	uinfo->value.integer.min = 0;
	uinfo->value.integer.max = 1;
	return 0;
}

static int olpc_dc_get(struct snd_kcontrol *kctl, struct snd_ctl_elem_value *v)
{
	v->value.integer.value[0] = gpio_get_value(OLPC_GPIO_MIC_AC);
	return 0;
}

static int olpc_dc_put(struct snd_kcontrol *kctl, struct snd_ctl_elem_value *v)
{
	struct cs5535audio *cs5535au = snd_kcontrol_chip(kctl);

	olpc_analog_input(cs5535au->ac97, v->value.integer.value[0]);
	return 1;
}

static int olpc_mic_info(struct snd_kcontrol *kctl,
		struct snd_ctl_elem_info *uinfo)
{
	uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
	uinfo->count = 1;
	uinfo->value.integer.min = 0;
	uinfo->value.integer.max = 1;
	return 0;
}

static int olpc_mic_get(struct snd_kcontrol *kctl, struct snd_ctl_elem_value *v)
{
	struct cs5535audio *cs5535au = snd_kcontrol_chip(kctl);
	struct snd_ac97 *ac97 = cs5535au->ac97;
	int i;

	i = (snd_ac97_read(ac97, AC97_AD_MISC) >> AC97_AD_VREFD_SHIFT) & 0x1;
	v->value.integer.value[0] = i ? 0 : 1;
	return 0;
}

static int olpc_mic_put(struct snd_kcontrol *kctl, struct snd_ctl_elem_value *v)
{
	struct cs5535audio *cs5535au = snd_kcontrol_chip(kctl);

	olpc_mic_bias(cs5535au->ac97, v->value.integer.value[0]);
	return 1;
}

static struct snd_kcontrol_new olpc_cs5535audio_ctls[] = {
{
	.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
	.name = "DC Mode Enable",
	.info = olpc_dc_info,
	.get = olpc_dc_get,
	.put = olpc_dc_put,
	.private_value = 0,
},
{
	.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
	.name = "MIC Bias Enable",
	.info = olpc_mic_info,
	.get = olpc_mic_get,
	.put = olpc_mic_put,
	.private_value = 0,
},
};

void olpc_prequirks(struct snd_card *card,
		    struct snd_ac97_template *ac97)
{
	if (!machine_is_olpc())
		return;

	/* invert EAPD if on an OLPC B3 or higher */
	if (olpc_board_at_least(olpc_board_pre(0xb3)))
		ac97->scaps |= AC97_SCAP_INV_EAPD;
}

int olpc_quirks(struct snd_card *card, struct snd_ac97 *ac97)
{
	struct snd_ctl_elem_id elem;
	int i, err;

	if (!machine_is_olpc())
		return 0;

	if (gpio_request(OLPC_GPIO_MIC_AC, DRV_NAME)) {
		dev_err(card->dev, "unable to allocate MIC GPIO\n");
		return -EIO;
	}
	gpio_direction_output(OLPC_GPIO_MIC_AC, 0);

	/* drop the original AD1888 HPF control */
	memset(&elem, 0, sizeof(elem));
	elem.iface = SNDRV_CTL_ELEM_IFACE_MIXER;
	strlcpy(elem.name, "High Pass Filter Enable", sizeof(elem.name));
	snd_ctl_remove_id(card, &elem);

	/* drop the original V_REFOUT control */
	memset(&elem, 0, sizeof(elem));
	elem.iface = SNDRV_CTL_ELEM_IFACE_MIXER;
	strlcpy(elem.name, "V_REFOUT Enable", sizeof(elem.name));
	snd_ctl_remove_id(card, &elem);

	/* add the OLPC-specific controls */
	for (i = 0; i < ARRAY_SIZE(olpc_cs5535audio_ctls); i++) {
		err = snd_ctl_add(card, snd_ctl_new1(&olpc_cs5535audio_ctls[i],
				ac97->private_data));
		if (err < 0) {
			gpio_free(OLPC_GPIO_MIC_AC);
			return err;
		}
	}

	/* turn off the mic by default */
	olpc_mic_bias(ac97, 0);
	return 0;
}

void olpc_quirks_cleanup(void)
{
	gpio_free(OLPC_GPIO_MIC_AC);
}
Commit	Line	Data
b5ccc57b AS	1	/*
	2	* OLPC XO-1 additional sound features
	3	*
	4	* Copyright © 2006 Jaya Kumar <jayakumar.lkml@gmail.com>
	5	* Copyright © 2007-2008 Andres Salomon <dilinger@debian.org>
	6	*
	7	* This program is free software; you can redistribute it and/or modify
	8	* it under the terms of the GNU General Public License as published by
	9	* the Free Software Foundation; either version 2 of the License, or
	10	* (at your option) any later version.
	11	*/
57d4bf6d JK	12	#include <sound/core.h>
	13	#include <sound/info.h>
	14	#include <sound/control.h>
	15	#include <sound/ac97_codec.h>
3c554946	16	#include <linux/gpio.h>
c8974be5 JC	17
c8974be5 JC	18	#include <asm/olpc.h>
57d4bf6d JK	19	#include "cs5535audio.h"
57d4bf6d JK	20
3c554946 AS	21	#define DRV_NAME "cs5535audio-olpc"
3c554946 AS	22
d6276b78 AS	23	/*
	24	* OLPC has an additional feature on top of the regular AD1888 codec features.
	25	* It has an Analog Input mode that is switched into (after disabling the
	26	* High Pass Filter) via GPIO. It is supported on B2 and later models.
	27	*/
	28	void olpc_analog_input(struct snd_ac97 *ac97, int on)
	29	{
	30	int err;
	31
0fb497f5 AS	32	if (!machine_is_olpc())
	33	return;
	34
d6276b78 AS	35	/* update the High Pass Filter (via AC97_AD_TEST2) */
	36	err = snd_ac97_update_bits(ac97, AC97_AD_TEST2,
	37	1 << AC97_AD_HPFD_SHIFT, on << AC97_AD_HPFD_SHIFT);
	38	if (err < 0) {
00980aa9 TI	39	dev_err(ac97->bus->card->dev,
00980aa9 TI	40	"setting High Pass Filter - %d\n", err);
d6276b78 AS	41	return;
	42	}
	43
	44	/* set Analog Input through GPIO */
3c554946	45	gpio_set_value(OLPC_GPIO_MIC_AC, on);
d6276b78	46	}
57d4bf6d	47
bf1e5278 AS	48	/*
	49	* OLPC XO-1's V_REFOUT is a mic bias enable.
	50	*/
	51	void olpc_mic_bias(struct snd_ac97 *ac97, int on)
	52	{
	53	int err;
	54
0fb497f5 AS	55	if (!machine_is_olpc())
	56	return;
	57
bf1e5278 AS	58	on = on ? 0 : 1;
	59	err = snd_ac97_update_bits(ac97, AC97_AD_MISC,
	60	1 << AC97_AD_VREFD_SHIFT, on << AC97_AD_VREFD_SHIFT);
	61	if (err < 0)
00980aa9	62	dev_err(ac97->bus->card->dev, "setting MIC Bias - %d\n", err);
bf1e5278 AS	63	}
bf1e5278 AS	64
466ae305 AS	65	static int olpc_dc_info(struct snd_kcontrol *kctl,
466ae305 AS	66	struct snd_ctl_elem_info *uinfo)
57d4bf6d JK	67	{
	68	uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
	69	uinfo->count = 1;
	70	uinfo->value.integer.min = 0;
	71	uinfo->value.integer.max = 1;
	72	return 0;
	73	}
	74
466ae305	75	static int olpc_dc_get(struct snd_kcontrol kctl, struct snd_ctl_elem_value v)
57d4bf6d	76	{
3c554946	77	v->value.integer.value[0] = gpio_get_value(OLPC_GPIO_MIC_AC);
57d4bf6d JK	78	return 0;
	79	}
	80
466ae305	81	static int olpc_dc_put(struct snd_kcontrol kctl, struct snd_ctl_elem_value v)
57d4bf6d	82	{
466ae305	83	struct cs5535audio *cs5535au = snd_kcontrol_chip(kctl);
57d4bf6d	84
466ae305	85	olpc_analog_input(cs5535au->ac97, v->value.integer.value[0]);
57d4bf6d JK	86	return 1;
	87	}
	88
bf1e5278 AS	89	static int olpc_mic_info(struct snd_kcontrol *kctl,
	90	struct snd_ctl_elem_info *uinfo)
	91	{
	92	uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
	93	uinfo->count = 1;
	94	uinfo->value.integer.min = 0;
	95	uinfo->value.integer.max = 1;
	96	return 0;
	97	}
	98
	99	static int olpc_mic_get(struct snd_kcontrol kctl, struct snd_ctl_elem_value v)
	100	{
	101	struct cs5535audio *cs5535au = snd_kcontrol_chip(kctl);
	102	struct snd_ac97 *ac97 = cs5535au->ac97;
	103	int i;
	104
	105	i = (snd_ac97_read(ac97, AC97_AD_MISC) >> AC97_AD_VREFD_SHIFT) & 0x1;
	106	v->value.integer.value[0] = i ? 0 : 1;
	107	return 0;
	108	}
	109
	110	static int olpc_mic_put(struct snd_kcontrol kctl, struct snd_ctl_elem_value v)
	111	{
	112	struct cs5535audio *cs5535au = snd_kcontrol_chip(kctl);
	113
	114	olpc_mic_bias(cs5535au->ac97, v->value.integer.value[0]);
	115	return 1;
	116	}
	117
e23e7a14	118	static struct snd_kcontrol_new olpc_cs5535audio_ctls[] = {
57d4bf6d JK	119	{
57d4bf6d JK	120	.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
466ae305 AS	121	.name = "DC Mode Enable",
	122	.info = olpc_dc_info,
	123	.get = olpc_dc_get,
	124	.put = olpc_dc_put,
b5ccc57b	125	.private_value = 0,
bf1e5278 AS	126	},
	127	{
	128	.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
	129	.name = "MIC Bias Enable",
	130	.info = olpc_mic_info,
	131	.get = olpc_mic_get,
	132	.put = olpc_mic_put,
	133	.private_value = 0,
	134	},
57d4bf6d JK	135	};
57d4bf6d JK	136
e23e7a14 BP	137	void olpc_prequirks(struct snd_card *card,
e23e7a14 BP	138	struct snd_ac97_template *ac97)
3556d184 AS	139	{
	140	if (!machine_is_olpc())
	141	return;
	142
	143	/* invert EAPD if on an OLPC B3 or higher */
	144	if (olpc_board_at_least(olpc_board_pre(0xb3)))
	145	ac97->scaps \|= AC97_SCAP_INV_EAPD;
	146	}
	147
e23e7a14	148	int olpc_quirks(struct snd_card card, struct snd_ac97 ac97)
57d4bf6d	149	{
466ae305	150	struct snd_ctl_elem_id elem;
bf1e5278	151	int i, err;
466ae305	152
c8974be5 JC	153	if (!machine_is_olpc())
	154	return 0;
	155
3c554946	156	if (gpio_request(OLPC_GPIO_MIC_AC, DRV_NAME)) {
00980aa9	157	dev_err(card->dev, "unable to allocate MIC GPIO\n");
3c554946 AS	158	return -EIO;
	159	}
	160	gpio_direction_output(OLPC_GPIO_MIC_AC, 0);
	161
466ae305 AS	162	/* drop the original AD1888 HPF control */
	163	memset(&elem, 0, sizeof(elem));
	164	elem.iface = SNDRV_CTL_ELEM_IFACE_MIXER;
57a4451d	165	strlcpy(elem.name, "High Pass Filter Enable", sizeof(elem.name));
466ae305 AS	166	snd_ctl_remove_id(card, &elem);
466ae305 AS	167
bf1e5278 AS	168	/* drop the original V_REFOUT control */
	169	memset(&elem, 0, sizeof(elem));
	170	elem.iface = SNDRV_CTL_ELEM_IFACE_MIXER;
57a4451d	171	strlcpy(elem.name, "V_REFOUT Enable", sizeof(elem.name));
bf1e5278 AS	172	snd_ctl_remove_id(card, &elem);
	173
	174	/* add the OLPC-specific controls */
	175	for (i = 0; i < ARRAY_SIZE(olpc_cs5535audio_ctls); i++) {
	176	err = snd_ctl_add(card, snd_ctl_new1(&olpc_cs5535audio_ctls[i],
	177	ac97->private_data));
3c554946 AS	178	if (err < 0) {
3c554946 AS	179	gpio_free(OLPC_GPIO_MIC_AC);
bf1e5278	180	return err;
3c554946	181	}
bf1e5278 AS	182	}
bf1e5278 AS	183
c8f0eeeb AS	184	/* turn off the mic by default */
c8f0eeeb AS	185	olpc_mic_bias(ac97, 0);
bf1e5278	186	return 0;
57d4bf6d	187	}
3c554946	188
e23e7a14	189	void olpc_quirks_cleanup(void)
3c554946 AS	190	{
	191	gpio_free(OLPC_GPIO_MIC_AC);
	192	}