LXR linux/sound/isa/ad1848/ad1848.c

   1/*
   2 *  Generic driver for AD1848/AD1847/CS4248 chips (0.1 Alpha)
   3 *  Copyright (c) by Tugrul Galatali <galatalt@stuy.edu>,
   4 *                   Jaroslav Kysela <perex@perex.cz>
   5 *  Based on card-4232.c by Jaroslav Kysela <perex@perex.cz>
   6 *
   7 *
   8 *   This program is free software; you can redistribute it and/or modify
   9 *   it under the terms of the GNU General Public License as published by
  10 *   the Free Software Foundation; either version 2 of the License, or
  11 *   (at your option) any later version.
  12 *
  13 *   This program is distributed in the hope that it will be useful,
  14 *   but WITHOUT ANY WARRANTY; without even the implied warranty of
  15 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16 *   GNU General Public License for more details.
  17 *
  18 *   You should have received a copy of the GNU General Public License
  19 *   along with this program; if not, write to the Free Software
  20 *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
  21 *
  22 */
  23
  24#include <linux/init.h>
  25#include <linux/err.h>
  26#include <linux/isa.h>
  27#include <linux/time.h>
  28#include <linux/wait.h>
  29#include <linux/module.h>
  30#include <sound/core.h>
  31#include <sound/wss.h>
  32#include <sound/initval.h>
  33
  34#define CRD_NAME "Generic AD1848/AD1847/CS4248"
  35#define DEV_NAME "ad1848"
  36
  37MODULE_DESCRIPTION(CRD_NAME);
  38MODULE_AUTHOR("Tugrul Galatali <galatalt@stuy.edu>, Jaroslav Kysela <perex@perex.cz>");
  39MODULE_LICENSE("GPL");
  40MODULE_SUPPORTED_DEVICE("{{Analog Devices,AD1848},"
  41                "{Analog Devices,AD1847},"
  42                "{Crystal Semiconductors,CS4248}}");
  43
  44static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;      /* Index 0-MAX */
  45static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;       /* ID for this card */
  46static bool enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE; /* Enable this card */
  47static long port[SNDRV_CARDS] = SNDRV_DEFAULT_PORT;     /* PnP setup */
  48static int irq[SNDRV_CARDS] = SNDRV_DEFAULT_IRQ;        /* 5,7,9,11,12,15 */
  49static int dma1[SNDRV_CARDS] = SNDRV_DEFAULT_DMA;       /* 0,1,3,5,6,7 */
  50static bool thinkpad[SNDRV_CARDS];                      /* Thinkpad special case */
  51
  52module_param_array(index, int, NULL, 0444);
  53MODULE_PARM_DESC(index, "Index value for " CRD_NAME " soundcard.");
  54module_param_array(id, charp, NULL, 0444);
  55MODULE_PARM_DESC(id, "ID string for " CRD_NAME " soundcard.");
  56module_param_array(enable, bool, NULL, 0444);
  57MODULE_PARM_DESC(enable, "Enable " CRD_NAME " soundcard.");
  58module_param_array(port, long, NULL, 0444);
  59MODULE_PARM_DESC(port, "Port # for " CRD_NAME " driver.");
  60module_param_array(irq, int, NULL, 0444);
  61MODULE_PARM_DESC(irq, "IRQ # for " CRD_NAME " driver.");
  62module_param_array(dma1, int, NULL, 0444);
  63MODULE_PARM_DESC(dma1, "DMA1 # for " CRD_NAME " driver.");
  64module_param_array(thinkpad, bool, NULL, 0444);
  65MODULE_PARM_DESC(thinkpad, "Enable only for the onboard CS4248 of IBM Thinkpad 360/750/755 series.");
  66
  67static int snd_ad1848_match(struct device *dev, unsigned int n)
  68{
  69        if (!enable[n])
  70                return 0;
  71
  72        if (port[n] == SNDRV_AUTO_PORT) {
  73                dev_err(dev, "please specify port\n");
  74                return 0;
  75        }
  76        if (irq[n] == SNDRV_AUTO_IRQ) {
  77                dev_err(dev, "please specify irq\n");
  78                return 0;       
  79        }
  80        if (dma1[n] == SNDRV_AUTO_DMA) {
  81                dev_err(dev, "please specify dma1\n");
  82                return 0;
  83        }
  84        return 1;
  85}
  86
  87static int snd_ad1848_probe(struct device *dev, unsigned int n)
  88{
  89        struct snd_card *card;
  90        struct snd_wss *chip;
  91        int error;
  92
  93        error = snd_card_new(dev, index[n], id[n], THIS_MODULE, 0, &card);
  94        if (error < 0)
  95                return error;
  96
  97        error = snd_wss_create(card, port[n], -1, irq[n], dma1[n], -1,
  98                        thinkpad[n] ? WSS_HW_THINKPAD : WSS_HW_DETECT,
  99                        0, &chip);
 100        if (error < 0)
 101                goto out;
 102
 103        card->private_data = chip;
 104
 105        error = snd_wss_pcm(chip, 0);
 106        if (error < 0)
 107                goto out;
 108
 109        error = snd_wss_mixer(chip);
 110        if (error < 0)
 111                goto out;
 112
 113        strcpy(card->driver, "AD1848");
 114        strcpy(card->shortname, chip->pcm->name);
 115
 116        sprintf(card->longname, "%s at 0x%lx, irq %d, dma %d",
 117                chip->pcm->name, chip->port, irq[n], dma1[n]);
 118        if (thinkpad[n])
 119                strcat(card->longname, " [Thinkpad]");
 120
 121        error = snd_card_register(card);
 122        if (error < 0)
 123                goto out;
 124
 125        dev_set_drvdata(dev, card);
 126        return 0;
 127
 128out:    snd_card_free(card);
 129        return error;
 130}
 131
 132static int snd_ad1848_remove(struct device *dev, unsigned int n)
 133{
 134        snd_card_free(dev_get_drvdata(dev));
 135        return 0;
 136}
 137
 138#ifdef CONFIG_PM
 139static int snd_ad1848_suspend(struct device *dev, unsigned int n, pm_message_t state)
 140{
 141        struct snd_card *card = dev_get_drvdata(dev);
 142        struct snd_wss *chip = card->private_data;
 143
 144        snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);
 145        chip->suspend(chip);
 146        return 0;
 147}
 148
 149static int snd_ad1848_resume(struct device *dev, unsigned int n)
 150{
 151        struct snd_card *card = dev_get_drvdata(dev);
 152        struct snd_wss *chip = card->private_data;
 153
 154        chip->resume(chip);
 155        snd_power_change_state(card, SNDRV_CTL_POWER_D0);
 156        return 0;
 157}
 158#endif
 159
 160static struct isa_driver snd_ad1848_driver = {
 161        .match          = snd_ad1848_match,
 162        .probe          = snd_ad1848_probe,
 163        .remove         = snd_ad1848_remove,
 164#ifdef CONFIG_PM
 165        .suspend        = snd_ad1848_suspend,
 166        .resume         = snd_ad1848_resume,
 167#endif
 168        .driver         = {
 169                .name   = DEV_NAME
 170        }
 171};
 172
 173static int __init alsa_card_ad1848_init(void)
 174{
 175        return isa_register_driver(&snd_ad1848_driver, SNDRV_CARDS);
 176}
 177
 178static void __exit alsa_card_ad1848_exit(void)
 179{
 180        isa_unregister_driver(&snd_ad1848_driver);
 181}
 182
 183module_init(alsa_card_ad1848_init);
 184module_exit(alsa_card_ad1848_exit);
 185