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linux-next/sound/pci/emu10k1/emu10k1.c
Takashi Iwai aeaa6203b6 ALSA: emu10k1: Use workqueue instead of kthread for emu1010 fw polling 
This patch is a cleanup of EMU1010 dock probing code in emu10k1 driver
to use work instead of kthread in a loop.  The work is lighter and
easier to control than kthread, in general.

Instead of a loop with the explicit sleep, we do simply
delayed-schedule the work.  At suspend/resume callbacks, the work is
canceled and restarted, respectively.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
2016-11-15 08:21:19 +01:00

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/*
* The driver for the EMU10K1 (SB Live!) based soundcards
* Copyright (c) by Jaroslav Kysela <perex@perex.cz>
*
* Copyright (c) by James Courtier-Dutton <James@superbug.demon.co.uk>
* Added support for Audigy 2 Value.
*
*
* 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 <linux/init.h>
#include <linux/pci.h>
#include <linux/time.h>
#include <linux/module.h>
#include <sound/core.h>
#include <sound/emu10k1.h>
#include <sound/initval.h>
MODULE_AUTHOR("Jaroslav Kysela <perex@perex.cz>");
MODULE_DESCRIPTION("EMU10K1");
MODULE_LICENSE("GPL");
MODULE_SUPPORTED_DEVICE("{{Creative Labs,SB Live!/PCI512/E-mu APS},"
"{Creative Labs,SB Audigy}}");
#if IS_REACHABLE(CONFIG_SND_SEQUENCER)
#define ENABLE_SYNTH
#include <sound/emu10k1_synth.h>
#endif
static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX; /* Index 0-MAX */
static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR; /* ID for this card */
static bool enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP; /* Enable this card */
static int extin[SNDRV_CARDS];
static int extout[SNDRV_CARDS];
static int seq_ports[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = 4};
static int max_synth_voices[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = 64};
static int max_buffer_size[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = 128};
static bool enable_ir[SNDRV_CARDS];
static uint subsystem[SNDRV_CARDS]; /* Force card subsystem model */
static uint delay_pcm_irq[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = 2};
module_param_array(index, int, NULL, 0444);
MODULE_PARM_DESC(index, "Index value for the EMU10K1 soundcard.");
module_param_array(id, charp, NULL, 0444);
MODULE_PARM_DESC(id, "ID string for the EMU10K1 soundcard.");
module_param_array(enable, bool, NULL, 0444);
MODULE_PARM_DESC(enable, "Enable the EMU10K1 soundcard.");
module_param_array(extin, int, NULL, 0444);
MODULE_PARM_DESC(extin, "Available external inputs for FX8010. Zero=default.");
module_param_array(extout, int, NULL, 0444);
MODULE_PARM_DESC(extout, "Available external outputs for FX8010. Zero=default.");
module_param_array(seq_ports, int, NULL, 0444);
MODULE_PARM_DESC(seq_ports, "Allocated sequencer ports for internal synthesizer.");
module_param_array(max_synth_voices, int, NULL, 0444);
MODULE_PARM_DESC(max_synth_voices, "Maximum number of voices for WaveTable.");
module_param_array(max_buffer_size, int, NULL, 0444);
MODULE_PARM_DESC(max_buffer_size, "Maximum sample buffer size in MB.");
module_param_array(enable_ir, bool, NULL, 0444);
MODULE_PARM_DESC(enable_ir, "Enable IR.");
module_param_array(subsystem, uint, NULL, 0444);
MODULE_PARM_DESC(subsystem, "Force card subsystem model.");
module_param_array(delay_pcm_irq, uint, NULL, 0444);
MODULE_PARM_DESC(delay_pcm_irq, "Delay PCM interrupt by specified number of samples (default 0).");
/*
* Class 0401: 1102:0008 (rev 00) Subsystem: 1102:1001 -> Audigy2 Value Model:SB0400
*/
static const struct pci_device_id snd_emu10k1_ids[] = {
{ PCI_VDEVICE(CREATIVE, 0x0002), 0 }, /* EMU10K1 */
{ PCI_VDEVICE(CREATIVE, 0x0004), 1 }, /* Audigy */
{ PCI_VDEVICE(CREATIVE, 0x0008), 1 }, /* Audigy 2 Value SB0400 */
{ 0, }
};
/*
* Audigy 2 Value notes:
* A_IOCFG Input (GPIO)
* 0x400 = Front analog jack plugged in. (Green socket)
* 0x1000 = Read analog jack plugged in. (Black socket)
* 0x2000 = Center/LFE analog jack plugged in. (Orange socket)
* A_IOCFG Output (GPIO)
* 0x60 = Sound out of front Left.
* Win sets it to 0xXX61
*/
MODULE_DEVICE_TABLE(pci, snd_emu10k1_ids);
static int snd_card_emu10k1_probe(struct pci_dev *pci,
const struct pci_device_id *pci_id)
{
static int dev;
struct snd_card *card;
struct snd_emu10k1 *emu;
#ifdef ENABLE_SYNTH
struct snd_seq_device *wave = NULL;
#endif
int err;
if (dev >= SNDRV_CARDS)
return -ENODEV;
if (!enable[dev]) {
dev++;
return -ENOENT;
}
err = snd_card_new(&pci->dev, index[dev], id[dev], THIS_MODULE,
0, &card);
if (err < 0)
return err;
if (max_buffer_size[dev] < 32)
max_buffer_size[dev] = 32;
else if (max_buffer_size[dev] > 1024)
max_buffer_size[dev] = 1024;
if ((err = snd_emu10k1_create(card, pci, extin[dev], extout[dev],
(long)max_buffer_size[dev] * 1024 * 1024,
enable_ir[dev], subsystem[dev],
&emu)) < 0)
goto error;
card->private_data = emu;
emu->delay_pcm_irq = delay_pcm_irq[dev] & 0x1f;
if ((err = snd_emu10k1_pcm(emu, 0)) < 0)
goto error;
if ((err = snd_emu10k1_pcm_mic(emu, 1)) < 0)
goto error;
if ((err = snd_emu10k1_pcm_efx(emu, 2)) < 0)
goto error;
/* This stores the periods table. */
if (emu->card_capabilities->ca0151_chip) { /* P16V */
if ((err = snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, snd_dma_pci_data(pci),
1024, &emu->p16v_buffer)) < 0)
goto error;
}
if ((err = snd_emu10k1_mixer(emu, 0, 3)) < 0)
goto error;
if ((err = snd_emu10k1_timer(emu, 0)) < 0)
goto error;
if ((err = snd_emu10k1_pcm_multi(emu, 3)) < 0)
goto error;
if (emu->card_capabilities->ca0151_chip) { /* P16V */
if ((err = snd_p16v_pcm(emu, 4)) < 0)
goto error;
}
if (emu->audigy) {
if ((err = snd_emu10k1_audigy_midi(emu)) < 0)
goto error;
} else {
if ((err = snd_emu10k1_midi(emu)) < 0)
goto error;
}
if ((err = snd_emu10k1_fx8010_new(emu, 0)) < 0)
goto error;
#ifdef ENABLE_SYNTH
if (snd_seq_device_new(card, 1, SNDRV_SEQ_DEV_ID_EMU10K1_SYNTH,
sizeof(struct snd_emu10k1_synth_arg), &wave) < 0 ||
wave == NULL) {
dev_warn(emu->card->dev,
"can't initialize Emu10k1 wavetable synth\n");
} else {
struct snd_emu10k1_synth_arg *arg;
arg = SNDRV_SEQ_DEVICE_ARGPTR(wave);
strcpy(wave->name, "Emu-10k1 Synth");
arg->hwptr = emu;
arg->index = 1;
arg->seq_ports = seq_ports[dev];
arg->max_voices = max_synth_voices[dev];
}
#endif
strlcpy(card->driver, emu->card_capabilities->driver,
sizeof(card->driver));
strlcpy(card->shortname, emu->card_capabilities->name,
sizeof(card->shortname));
snprintf(card->longname, sizeof(card->longname),
"%s (rev.%d, serial:0x%x) at 0x%lx, irq %i",
card->shortname, emu->revision, emu->serial, emu->port, emu->irq);
if ((err = snd_card_register(card)) < 0)
goto error;
if (emu->card_capabilities->emu_model)
schedule_delayed_work(&emu->emu1010.firmware_work, 0);
pci_set_drvdata(pci, card);
dev++;
return 0;
error:
snd_card_free(card);
return err;
}
static void snd_card_emu10k1_remove(struct pci_dev *pci)
{
snd_card_free(pci_get_drvdata(pci));
}
#ifdef CONFIG_PM_SLEEP
static int snd_emu10k1_suspend(struct device *dev)
{
struct snd_card *card = dev_get_drvdata(dev);
struct snd_emu10k1 *emu = card->private_data;
snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);
emu->suspend = 1;
cancel_delayed_work_sync(&emu->emu1010.firmware_work);
snd_pcm_suspend_all(emu->pcm);
snd_pcm_suspend_all(emu->pcm_mic);
snd_pcm_suspend_all(emu->pcm_efx);
snd_pcm_suspend_all(emu->pcm_multi);
snd_pcm_suspend_all(emu->pcm_p16v);
snd_ac97_suspend(emu->ac97);
snd_emu10k1_efx_suspend(emu);
snd_emu10k1_suspend_regs(emu);
if (emu->card_capabilities->ca0151_chip)
snd_p16v_suspend(emu);
snd_emu10k1_done(emu);
return 0;
}
static int snd_emu10k1_resume(struct device *dev)
{
struct snd_card *card = dev_get_drvdata(dev);
struct snd_emu10k1 *emu = card->private_data;
snd_emu10k1_resume_init(emu);
snd_emu10k1_efx_resume(emu);
snd_ac97_resume(emu->ac97);
snd_emu10k1_resume_regs(emu);
if (emu->card_capabilities->ca0151_chip)
snd_p16v_resume(emu);
emu->suspend = 0;
snd_power_change_state(card, SNDRV_CTL_POWER_D0);
if (emu->card_capabilities->emu_model)
schedule_delayed_work(&emu->emu1010.firmware_work, 0);
return 0;
}
static SIMPLE_DEV_PM_OPS(snd_emu10k1_pm, snd_emu10k1_suspend, snd_emu10k1_resume);
#define SND_EMU10K1_PM_OPS &snd_emu10k1_pm
#else
#define SND_EMU10K1_PM_OPS NULL
#endif /* CONFIG_PM_SLEEP */
static struct pci_driver emu10k1_driver = {
.name = KBUILD_MODNAME,
.id_table = snd_emu10k1_ids,
.probe = snd_card_emu10k1_probe,
.remove = snd_card_emu10k1_remove,
.driver = {
.pm = SND_EMU10K1_PM_OPS,
},
};
module_pci_driver(emu10k1_driver);
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