304 lines
7.1 KiB
C
304 lines
7.1 KiB
C
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/*
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* Driver for Sound Core PDAudioCF soundcard
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*
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* Copyright (c) 2003 by Jaroslav Kysela <perex@perex.cz>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include <sound/core.h>
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#include <linux/slab.h>
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#include <linux/module.h>
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#include <pcmcia/ciscode.h>
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#include <pcmcia/cisreg.h>
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#include "pdaudiocf.h"
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#include <sound/initval.h>
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#include <linux/init.h>
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/*
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*/
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#define CARD_NAME "PDAudio-CF"
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MODULE_AUTHOR("Jaroslav Kysela <perex@perex.cz>");
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MODULE_DESCRIPTION("Sound Core " CARD_NAME);
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MODULE_LICENSE("GPL");
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MODULE_SUPPORTED_DEVICE("{{Sound Core," CARD_NAME "}}");
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static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX; /* Index 0-MAX */
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static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR; /* ID for this card */
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static bool enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP; /* Enable switches */
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module_param_array(index, int, NULL, 0444);
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MODULE_PARM_DESC(index, "Index value for " CARD_NAME " soundcard.");
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module_param_array(id, charp, NULL, 0444);
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MODULE_PARM_DESC(id, "ID string for " CARD_NAME " soundcard.");
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module_param_array(enable, bool, NULL, 0444);
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MODULE_PARM_DESC(enable, "Enable " CARD_NAME " soundcard.");
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/*
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*/
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static struct snd_card *card_list[SNDRV_CARDS];
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/*
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* prototypes
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*/
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static int pdacf_config(struct pcmcia_device *link);
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static void snd_pdacf_detach(struct pcmcia_device *p_dev);
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static void pdacf_release(struct pcmcia_device *link)
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{
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free_irq(link->irq, link->priv);
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pcmcia_disable_device(link);
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}
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/*
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* destructor
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*/
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static int snd_pdacf_free(struct snd_pdacf *pdacf)
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{
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struct pcmcia_device *link = pdacf->p_dev;
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pdacf_release(link);
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card_list[pdacf->index] = NULL;
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pdacf->card = NULL;
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kfree(pdacf);
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return 0;
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}
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static int snd_pdacf_dev_free(struct snd_device *device)
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{
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struct snd_pdacf *chip = device->device_data;
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return snd_pdacf_free(chip);
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}
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/*
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* snd_pdacf_attach - attach callback for cs
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*/
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static int snd_pdacf_probe(struct pcmcia_device *link)
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{
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int i, err;
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struct snd_pdacf *pdacf;
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struct snd_card *card;
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static struct snd_device_ops ops = {
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.dev_free = snd_pdacf_dev_free,
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};
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snd_printdd(KERN_DEBUG "pdacf_attach called\n");
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/* find an empty slot from the card list */
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for (i = 0; i < SNDRV_CARDS; i++) {
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if (! card_list[i])
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break;
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}
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if (i >= SNDRV_CARDS) {
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snd_printk(KERN_ERR "pdacf: too many cards found\n");
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return -EINVAL;
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}
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if (! enable[i])
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return -ENODEV; /* disabled explicitly */
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/* ok, create a card instance */
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err = snd_card_new(&link->dev, index[i], id[i], THIS_MODULE,
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0, &card);
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if (err < 0) {
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snd_printk(KERN_ERR "pdacf: cannot create a card instance\n");
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return err;
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}
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pdacf = snd_pdacf_create(card);
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if (!pdacf) {
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snd_card_free(card);
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return -ENOMEM;
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}
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err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, pdacf, &ops);
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if (err < 0) {
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kfree(pdacf);
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snd_card_free(card);
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return err;
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}
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pdacf->index = i;
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card_list[i] = card;
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pdacf->p_dev = link;
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link->priv = pdacf;
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link->resource[0]->flags |= IO_DATA_PATH_WIDTH_AUTO;
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link->resource[0]->end = 16;
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link->config_flags = CONF_ENABLE_IRQ | CONF_ENABLE_PULSE_IRQ;
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link->config_index = 1;
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link->config_regs = PRESENT_OPTION;
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return pdacf_config(link);
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}
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/**
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* snd_pdacf_assign_resources - initialize the hardware and card instance.
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* @port: i/o port for the card
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* @irq: irq number for the card
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*
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* this function assigns the specified port and irq, boot the card,
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* create pcm and control instances, and initialize the rest hardware.
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*
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* returns 0 if successful, or a negative error code.
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*/
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static int snd_pdacf_assign_resources(struct snd_pdacf *pdacf, int port, int irq)
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{
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int err;
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struct snd_card *card = pdacf->card;
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snd_printdd(KERN_DEBUG "pdacf assign resources: port = 0x%x, irq = %d\n", port, irq);
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pdacf->port = port;
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pdacf->irq = irq;
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pdacf->chip_status |= PDAUDIOCF_STAT_IS_CONFIGURED;
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err = snd_pdacf_ak4117_create(pdacf);
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if (err < 0)
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return err;
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strcpy(card->driver, "PDAudio-CF");
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sprintf(card->shortname, "Core Sound %s", card->driver);
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sprintf(card->longname, "%s at 0x%x, irq %i",
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card->shortname, port, irq);
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err = snd_pdacf_pcm_new(pdacf);
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if (err < 0)
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return err;
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if ((err = snd_card_register(card)) < 0)
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return err;
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return 0;
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}
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/*
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* snd_pdacf_detach - detach callback for cs
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*/
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static void snd_pdacf_detach(struct pcmcia_device *link)
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{
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struct snd_pdacf *chip = link->priv;
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snd_printdd(KERN_DEBUG "pdacf_detach called\n");
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if (chip->chip_status & PDAUDIOCF_STAT_IS_CONFIGURED)
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snd_pdacf_powerdown(chip);
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chip->chip_status |= PDAUDIOCF_STAT_IS_STALE; /* to be sure */
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snd_card_disconnect(chip->card);
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snd_card_free_when_closed(chip->card);
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}
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/*
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* configuration callback
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*/
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static int pdacf_config(struct pcmcia_device *link)
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{
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struct snd_pdacf *pdacf = link->priv;
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int ret;
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snd_printdd(KERN_DEBUG "pdacf_config called\n");
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link->config_index = 0x5;
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link->config_flags |= CONF_ENABLE_IRQ | CONF_ENABLE_PULSE_IRQ;
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ret = pcmcia_request_io(link);
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if (ret)
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goto failed_preirq;
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ret = request_threaded_irq(link->irq, pdacf_interrupt,
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pdacf_threaded_irq,
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IRQF_SHARED, link->devname, link->priv);
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if (ret)
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goto failed_preirq;
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ret = pcmcia_enable_device(link);
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if (ret)
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goto failed;
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if (snd_pdacf_assign_resources(pdacf, link->resource[0]->start,
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link->irq) < 0)
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goto failed;
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return 0;
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failed:
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free_irq(link->irq, link->priv);
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failed_preirq:
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pcmcia_disable_device(link);
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return -ENODEV;
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}
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#ifdef CONFIG_PM
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static int pdacf_suspend(struct pcmcia_device *link)
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{
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struct snd_pdacf *chip = link->priv;
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snd_printdd(KERN_DEBUG "SUSPEND\n");
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if (chip) {
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snd_printdd(KERN_DEBUG "snd_pdacf_suspend calling\n");
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snd_pdacf_suspend(chip);
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}
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return 0;
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}
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static int pdacf_resume(struct pcmcia_device *link)
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{
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struct snd_pdacf *chip = link->priv;
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snd_printdd(KERN_DEBUG "RESUME\n");
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if (pcmcia_dev_present(link)) {
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if (chip) {
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snd_printdd(KERN_DEBUG "calling snd_pdacf_resume\n");
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snd_pdacf_resume(chip);
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}
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}
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snd_printdd(KERN_DEBUG "resume done!\n");
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return 0;
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}
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#endif
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/*
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* Module entry points
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*/
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static const struct pcmcia_device_id snd_pdacf_ids[] = {
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/* this is too general PCMCIA_DEVICE_MANF_CARD(0x015d, 0x4c45), */
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PCMCIA_DEVICE_PROD_ID12("Core Sound","PDAudio-CF",0x396d19d2,0x71717b49),
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PCMCIA_DEVICE_NULL
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};
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MODULE_DEVICE_TABLE(pcmcia, snd_pdacf_ids);
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static struct pcmcia_driver pdacf_cs_driver = {
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.owner = THIS_MODULE,
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.name = "snd-pdaudiocf",
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.probe = snd_pdacf_probe,
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.remove = snd_pdacf_detach,
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.id_table = snd_pdacf_ids,
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#ifdef CONFIG_PM
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.suspend = pdacf_suspend,
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.resume = pdacf_resume,
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#endif
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};
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module_pcmcia_driver(pdacf_cs_driver);
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