![David Henningsson](/assets/img/avatar_default.png)
Some Conexant devices (e g CX20590) have no mute capability on their Beep widgets. This patch makes sure we don't try setting mutes on those widgets. Signed-off-by: David Henningsson <david.henningsson@canonical.com> Signed-off-by: Takashi Iwai <tiwai@suse.de>
278 lines
7.1 KiB
C
278 lines
7.1 KiB
C
/*
|
|
* Digital Beep Input Interface for HD-audio codec
|
|
*
|
|
* Author: Matthew Ranostay <mranostay@embeddedalley.com>
|
|
* Copyright (c) 2008 Embedded Alley Solutions Inc
|
|
*
|
|
* This driver 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 driver 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/input.h>
|
|
#include <linux/pci.h>
|
|
#include <linux/slab.h>
|
|
#include <linux/workqueue.h>
|
|
#include <linux/export.h>
|
|
#include <sound/core.h>
|
|
#include "hda_beep.h"
|
|
#include "hda_local.h"
|
|
|
|
enum {
|
|
DIGBEEP_HZ_STEP = 46875, /* 46.875 Hz */
|
|
DIGBEEP_HZ_MIN = 93750, /* 93.750 Hz */
|
|
DIGBEEP_HZ_MAX = 12000000, /* 12 KHz */
|
|
};
|
|
|
|
static void snd_hda_generate_beep(struct work_struct *work)
|
|
{
|
|
struct hda_beep *beep =
|
|
container_of(work, struct hda_beep, beep_work);
|
|
struct hda_codec *codec = beep->codec;
|
|
|
|
if (!beep->enabled)
|
|
return;
|
|
|
|
/* generate tone */
|
|
snd_hda_codec_write(codec, beep->nid, 0,
|
|
AC_VERB_SET_BEEP_CONTROL, beep->tone);
|
|
}
|
|
|
|
/* (non-standard) Linear beep tone calculation for IDT/STAC codecs
|
|
*
|
|
* The tone frequency of beep generator on IDT/STAC codecs is
|
|
* defined from the 8bit tone parameter, in Hz,
|
|
* freq = 48000 * (257 - tone) / 1024
|
|
* that is from 12kHz to 93.75Hz in steps of 46.875 Hz
|
|
*/
|
|
static int beep_linear_tone(struct hda_beep *beep, int hz)
|
|
{
|
|
if (hz <= 0)
|
|
return 0;
|
|
hz *= 1000; /* fixed point */
|
|
hz = hz - DIGBEEP_HZ_MIN
|
|
+ DIGBEEP_HZ_STEP / 2; /* round to nearest step */
|
|
if (hz < 0)
|
|
hz = 0; /* turn off PC beep*/
|
|
else if (hz >= (DIGBEEP_HZ_MAX - DIGBEEP_HZ_MIN))
|
|
hz = 1; /* max frequency */
|
|
else {
|
|
hz /= DIGBEEP_HZ_STEP;
|
|
hz = 255 - hz;
|
|
}
|
|
return hz;
|
|
}
|
|
|
|
/* HD-audio standard beep tone parameter calculation
|
|
*
|
|
* The tone frequency in Hz is calculated as
|
|
* freq = 48000 / (tone * 4)
|
|
* from 47Hz to 12kHz
|
|
*/
|
|
static int beep_standard_tone(struct hda_beep *beep, int hz)
|
|
{
|
|
if (hz <= 0)
|
|
return 0; /* disabled */
|
|
hz = 12000 / hz;
|
|
if (hz > 0xff)
|
|
return 0xff;
|
|
if (hz <= 0)
|
|
return 1;
|
|
return hz;
|
|
}
|
|
|
|
static int snd_hda_beep_event(struct input_dev *dev, unsigned int type,
|
|
unsigned int code, int hz)
|
|
{
|
|
struct hda_beep *beep = input_get_drvdata(dev);
|
|
|
|
switch (code) {
|
|
case SND_BELL:
|
|
if (hz)
|
|
hz = 1000;
|
|
case SND_TONE:
|
|
if (beep->linear_tone)
|
|
beep->tone = beep_linear_tone(beep, hz);
|
|
else
|
|
beep->tone = beep_standard_tone(beep, hz);
|
|
break;
|
|
default:
|
|
return -1;
|
|
}
|
|
|
|
/* schedule beep event */
|
|
schedule_work(&beep->beep_work);
|
|
return 0;
|
|
}
|
|
|
|
static void snd_hda_do_detach(struct hda_beep *beep)
|
|
{
|
|
input_unregister_device(beep->dev);
|
|
beep->dev = NULL;
|
|
cancel_work_sync(&beep->beep_work);
|
|
/* turn off beep for sure */
|
|
snd_hda_codec_write(beep->codec, beep->nid, 0,
|
|
AC_VERB_SET_BEEP_CONTROL, 0);
|
|
}
|
|
|
|
static int snd_hda_do_attach(struct hda_beep *beep)
|
|
{
|
|
struct input_dev *input_dev;
|
|
struct hda_codec *codec = beep->codec;
|
|
int err;
|
|
|
|
input_dev = input_allocate_device();
|
|
if (!input_dev) {
|
|
printk(KERN_INFO "hda_beep: unable to allocate input device\n");
|
|
return -ENOMEM;
|
|
}
|
|
|
|
/* setup digital beep device */
|
|
input_dev->name = "HDA Digital PCBeep";
|
|
input_dev->phys = beep->phys;
|
|
input_dev->id.bustype = BUS_PCI;
|
|
|
|
input_dev->id.vendor = codec->vendor_id >> 16;
|
|
input_dev->id.product = codec->vendor_id & 0xffff;
|
|
input_dev->id.version = 0x01;
|
|
|
|
input_dev->evbit[0] = BIT_MASK(EV_SND);
|
|
input_dev->sndbit[0] = BIT_MASK(SND_BELL) | BIT_MASK(SND_TONE);
|
|
input_dev->event = snd_hda_beep_event;
|
|
input_dev->dev.parent = &codec->bus->pci->dev;
|
|
input_set_drvdata(input_dev, beep);
|
|
|
|
err = input_register_device(input_dev);
|
|
if (err < 0) {
|
|
input_free_device(input_dev);
|
|
printk(KERN_INFO "hda_beep: unable to register input device\n");
|
|
return err;
|
|
}
|
|
beep->dev = input_dev;
|
|
return 0;
|
|
}
|
|
|
|
int snd_hda_enable_beep_device(struct hda_codec *codec, int enable)
|
|
{
|
|
struct hda_beep *beep = codec->beep;
|
|
if (!beep)
|
|
return 0;
|
|
enable = !!enable;
|
|
if (beep->enabled != enable) {
|
|
beep->enabled = enable;
|
|
if (!enable) {
|
|
cancel_work_sync(&beep->beep_work);
|
|
/* turn off beep */
|
|
snd_hda_codec_write(beep->codec, beep->nid, 0,
|
|
AC_VERB_SET_BEEP_CONTROL, 0);
|
|
}
|
|
return 1;
|
|
}
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL_HDA(snd_hda_enable_beep_device);
|
|
|
|
int snd_hda_attach_beep_device(struct hda_codec *codec, int nid)
|
|
{
|
|
struct hda_beep *beep;
|
|
int err;
|
|
|
|
if (!snd_hda_get_bool_hint(codec, "beep"))
|
|
return 0; /* disabled explicitly by hints */
|
|
if (codec->beep_mode == HDA_BEEP_MODE_OFF)
|
|
return 0; /* disabled by module option */
|
|
|
|
beep = kzalloc(sizeof(*beep), GFP_KERNEL);
|
|
if (beep == NULL)
|
|
return -ENOMEM;
|
|
snprintf(beep->phys, sizeof(beep->phys),
|
|
"card%d/codec#%d/beep0", codec->bus->card->number, codec->addr);
|
|
/* enable linear scale */
|
|
snd_hda_codec_write(codec, nid, 0,
|
|
AC_VERB_SET_DIGI_CONVERT_2, 0x01);
|
|
|
|
beep->nid = nid;
|
|
beep->codec = codec;
|
|
codec->beep = beep;
|
|
|
|
INIT_WORK(&beep->beep_work, &snd_hda_generate_beep);
|
|
mutex_init(&beep->mutex);
|
|
|
|
err = snd_hda_do_attach(beep);
|
|
if (err < 0) {
|
|
kfree(beep);
|
|
codec->beep = NULL;
|
|
return err;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL_HDA(snd_hda_attach_beep_device);
|
|
|
|
void snd_hda_detach_beep_device(struct hda_codec *codec)
|
|
{
|
|
struct hda_beep *beep = codec->beep;
|
|
if (beep) {
|
|
if (beep->dev)
|
|
snd_hda_do_detach(beep);
|
|
codec->beep = NULL;
|
|
kfree(beep);
|
|
}
|
|
}
|
|
EXPORT_SYMBOL_HDA(snd_hda_detach_beep_device);
|
|
|
|
static bool ctl_has_mute(struct snd_kcontrol *kcontrol)
|
|
{
|
|
struct hda_codec *codec = snd_kcontrol_chip(kcontrol);
|
|
return query_amp_caps(codec, get_amp_nid(kcontrol),
|
|
get_amp_direction(kcontrol)) & AC_AMPCAP_MUTE;
|
|
}
|
|
|
|
/* get/put callbacks for beep mute mixer switches */
|
|
int snd_hda_mixer_amp_switch_get_beep(struct snd_kcontrol *kcontrol,
|
|
struct snd_ctl_elem_value *ucontrol)
|
|
{
|
|
struct hda_codec *codec = snd_kcontrol_chip(kcontrol);
|
|
struct hda_beep *beep = codec->beep;
|
|
if (beep && (!beep->enabled || !ctl_has_mute(kcontrol))) {
|
|
ucontrol->value.integer.value[0] =
|
|
ucontrol->value.integer.value[1] = beep->enabled;
|
|
return 0;
|
|
}
|
|
return snd_hda_mixer_amp_switch_get(kcontrol, ucontrol);
|
|
}
|
|
EXPORT_SYMBOL_HDA(snd_hda_mixer_amp_switch_get_beep);
|
|
|
|
int snd_hda_mixer_amp_switch_put_beep(struct snd_kcontrol *kcontrol,
|
|
struct snd_ctl_elem_value *ucontrol)
|
|
{
|
|
struct hda_codec *codec = snd_kcontrol_chip(kcontrol);
|
|
struct hda_beep *beep = codec->beep;
|
|
if (beep) {
|
|
u8 chs = get_amp_channels(kcontrol);
|
|
int enable = 0;
|
|
long *valp = ucontrol->value.integer.value;
|
|
if (chs & 1) {
|
|
enable |= *valp;
|
|
valp++;
|
|
}
|
|
if (chs & 2)
|
|
enable |= *valp;
|
|
snd_hda_enable_beep_device(codec, enable);
|
|
}
|
|
if (!ctl_has_mute(kcontrol))
|
|
return 0;
|
|
return snd_hda_mixer_amp_switch_put(kcontrol, ucontrol);
|
|
}
|
|
EXPORT_SYMBOL_HDA(snd_hda_mixer_amp_switch_put_beep);
|