[GitHub/mt8127/android_kernel_alcatel_ttab.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) {
		snd_printk(KERN_ERR "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)
		snd_printk(KERN_ERR "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)) {
		printk(KERN_ERR DRV_NAME ": 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;
	strncpy(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;
	strncpy(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) {
	39	snd_printk(KERN_ERR "setting High Pass Filter - %d\n", err);
	40	return;
	41	}
	42
	43	/* set Analog Input through GPIO */
3c554946	44	gpio_set_value(OLPC_GPIO_MIC_AC, on);
d6276b78	45	}
57d4bf6d	46
bf1e5278 AS	47	/*
	48	* OLPC XO-1's V_REFOUT is a mic bias enable.
	49	*/
	50	void olpc_mic_bias(struct snd_ac97 *ac97, int on)
	51	{
	52	int err;
	53
0fb497f5 AS	54	if (!machine_is_olpc())
	55	return;
	56
bf1e5278 AS	57	on = on ? 0 : 1;
	58	err = snd_ac97_update_bits(ac97, AC97_AD_MISC,
	59	1 << AC97_AD_VREFD_SHIFT, on << AC97_AD_VREFD_SHIFT);
	60	if (err < 0)
	61	snd_printk(KERN_ERR "setting MIC Bias - %d\n", err);
	62	}
	63
466ae305 AS	64	static int olpc_dc_info(struct snd_kcontrol *kctl,
466ae305 AS	65	struct snd_ctl_elem_info *uinfo)
57d4bf6d JK	66	{
	67	uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
	68	uinfo->count = 1;
	69	uinfo->value.integer.min = 0;
	70	uinfo->value.integer.max = 1;
	71	return 0;
	72	}
	73
466ae305	74	static int olpc_dc_get(struct snd_kcontrol kctl, struct snd_ctl_elem_value v)
57d4bf6d	75	{
3c554946	76	v->value.integer.value[0] = gpio_get_value(OLPC_GPIO_MIC_AC);
57d4bf6d JK	77	return 0;
	78	}
	79
466ae305	80	static int olpc_dc_put(struct snd_kcontrol kctl, struct snd_ctl_elem_value v)
57d4bf6d	81	{
466ae305	82	struct cs5535audio *cs5535au = snd_kcontrol_chip(kctl);
57d4bf6d	83
466ae305	84	olpc_analog_input(cs5535au->ac97, v->value.integer.value[0]);
57d4bf6d JK	85	return 1;
	86	}
	87
bf1e5278 AS	88	static int olpc_mic_info(struct snd_kcontrol *kctl,
	89	struct snd_ctl_elem_info *uinfo)
	90	{
	91	uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
	92	uinfo->count = 1;
	93	uinfo->value.integer.min = 0;
	94	uinfo->value.integer.max = 1;
	95	return 0;
	96	}
	97
	98	static int olpc_mic_get(struct snd_kcontrol kctl, struct snd_ctl_elem_value v)
	99	{
	100	struct cs5535audio *cs5535au = snd_kcontrol_chip(kctl);
	101	struct snd_ac97 *ac97 = cs5535au->ac97;
	102	int i;
	103
	104	i = (snd_ac97_read(ac97, AC97_AD_MISC) >> AC97_AD_VREFD_SHIFT) & 0x1;
	105	v->value.integer.value[0] = i ? 0 : 1;
	106	return 0;
	107	}
	108
	109	static int olpc_mic_put(struct snd_kcontrol kctl, struct snd_ctl_elem_value v)
	110	{
	111	struct cs5535audio *cs5535au = snd_kcontrol_chip(kctl);
	112
	113	olpc_mic_bias(cs5535au->ac97, v->value.integer.value[0]);
	114	return 1;
	115	}
	116
e23e7a14	117	static struct snd_kcontrol_new olpc_cs5535audio_ctls[] = {
57d4bf6d JK	118	{
57d4bf6d JK	119	.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
466ae305 AS	120	.name = "DC Mode Enable",
	121	.info = olpc_dc_info,
	122	.get = olpc_dc_get,
	123	.put = olpc_dc_put,
b5ccc57b	124	.private_value = 0,
bf1e5278 AS	125	},
	126	{
	127	.iface = SNDRV_CTL_ELEM_IFACE_MIXER,
	128	.name = "MIC Bias Enable",
	129	.info = olpc_mic_info,
	130	.get = olpc_mic_get,
	131	.put = olpc_mic_put,
	132	.private_value = 0,
	133	},
57d4bf6d JK	134	};
57d4bf6d JK	135
e23e7a14 BP	136	void olpc_prequirks(struct snd_card *card,
e23e7a14 BP	137	struct snd_ac97_template *ac97)
3556d184 AS	138	{
	139	if (!machine_is_olpc())
	140	return;
	141
	142	/* invert EAPD if on an OLPC B3 or higher */
	143	if (olpc_board_at_least(olpc_board_pre(0xb3)))
	144	ac97->scaps \|= AC97_SCAP_INV_EAPD;
	145	}
	146
e23e7a14	147	int olpc_quirks(struct snd_card card, struct snd_ac97 ac97)
57d4bf6d	148	{
466ae305	149	struct snd_ctl_elem_id elem;
bf1e5278	150	int i, err;
466ae305	151
c8974be5 JC	152	if (!machine_is_olpc())
	153	return 0;
	154
3c554946 AS	155	if (gpio_request(OLPC_GPIO_MIC_AC, DRV_NAME)) {
	156	printk(KERN_ERR DRV_NAME ": unable to allocate MIC GPIO\n");
	157	return -EIO;
	158	}
	159	gpio_direction_output(OLPC_GPIO_MIC_AC, 0);
	160
466ae305 AS	161	/* drop the original AD1888 HPF control */
	162	memset(&elem, 0, sizeof(elem));
	163	elem.iface = SNDRV_CTL_ELEM_IFACE_MIXER;
	164	strncpy(elem.name, "High Pass Filter Enable", sizeof(elem.name));
	165	snd_ctl_remove_id(card, &elem);
	166
bf1e5278 AS	167	/* drop the original V_REFOUT control */
	168	memset(&elem, 0, sizeof(elem));
	169	elem.iface = SNDRV_CTL_ELEM_IFACE_MIXER;
	170	strncpy(elem.name, "V_REFOUT Enable", sizeof(elem.name));
	171	snd_ctl_remove_id(card, &elem);
	172
	173	/* add the OLPC-specific controls */
	174	for (i = 0; i < ARRAY_SIZE(olpc_cs5535audio_ctls); i++) {
	175	err = snd_ctl_add(card, snd_ctl_new1(&olpc_cs5535audio_ctls[i],
	176	ac97->private_data));
3c554946 AS	177	if (err < 0) {
3c554946 AS	178	gpio_free(OLPC_GPIO_MIC_AC);
bf1e5278	179	return err;
3c554946	180	}
bf1e5278 AS	181	}
bf1e5278 AS	182
c8f0eeeb AS	183	/* turn off the mic by default */
c8f0eeeb AS	184	olpc_mic_bias(ac97, 0);
bf1e5278	185	return 0;
57d4bf6d	186	}
3c554946	187
e23e7a14	188	void olpc_quirks_cleanup(void)
3c554946 AS	189	{
	190	gpio_free(OLPC_GPIO_MIC_AC);
	191	}