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Linux/sound/isa/ad1848/ad1848.c

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  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 
 37 MODULE_DESCRIPTION(CRD_NAME);
 38 MODULE_AUTHOR("Tugrul Galatali <galatalt@stuy.edu>, Jaroslav Kysela <perex@perex.cz>");
 39 MODULE_LICENSE("GPL");
 40 MODULE_SUPPORTED_DEVICE("{{Analog Devices,AD1848},"
 41                 "{Analog Devices,AD1847},"
 42                 "{Crystal Semiconductors,CS4248}}");
 43 
 44 static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;      /* Index 0-MAX */
 45 static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;       /* ID for this card */
 46 static bool enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE; /* Enable this card */
 47 static long port[SNDRV_CARDS] = SNDRV_DEFAULT_PORT;     /* PnP setup */
 48 static int irq[SNDRV_CARDS] = SNDRV_DEFAULT_IRQ;        /* 5,7,9,11,12,15 */
 49 static int dma1[SNDRV_CARDS] = SNDRV_DEFAULT_DMA;       /* 0,1,3,5,6,7 */
 50 static bool thinkpad[SNDRV_CARDS];                      /* Thinkpad special case */
 51 
 52 module_param_array(index, int, NULL, 0444);
 53 MODULE_PARM_DESC(index, "Index value for " CRD_NAME " soundcard.");
 54 module_param_array(id, charp, NULL, 0444);
 55 MODULE_PARM_DESC(id, "ID string for " CRD_NAME " soundcard.");
 56 module_param_array(enable, bool, NULL, 0444);
 57 MODULE_PARM_DESC(enable, "Enable " CRD_NAME " soundcard.");
 58 module_param_array(port, long, NULL, 0444);
 59 MODULE_PARM_DESC(port, "Port # for " CRD_NAME " driver.");
 60 module_param_array(irq, int, NULL, 0444);
 61 MODULE_PARM_DESC(irq, "IRQ # for " CRD_NAME " driver.");
 62 module_param_array(dma1, int, NULL, 0444);
 63 MODULE_PARM_DESC(dma1, "DMA1 # for " CRD_NAME " driver.");
 64 module_param_array(thinkpad, bool, NULL, 0444);
 65 MODULE_PARM_DESC(thinkpad, "Enable only for the onboard CS4248 of IBM Thinkpad 360/750/755 series.");
 66 
 67 static 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 
 87 static int snd_ad1848_probe(struct device *dev, unsigned int n)
 88 {
 89         struct snd_card *card;
 90         struct snd_wss *chip;
 91         struct snd_pcm *pcm;
 92         int error;
 93 
 94         error = snd_card_create(index[n], id[n], THIS_MODULE, 0, &card);
 95         if (error < 0)
 96                 return error;
 97 
 98         error = snd_wss_create(card, port[n], -1, irq[n], dma1[n], -1,
 99                         thinkpad[n] ? WSS_HW_THINKPAD : WSS_HW_DETECT,
100                         0, &chip);
101         if (error < 0)
102                 goto out;
103 
104         card->private_data = chip;
105 
106         error = snd_wss_pcm(chip, 0, &pcm);
107         if (error < 0)
108                 goto out;
109 
110         error = snd_wss_mixer(chip);
111         if (error < 0)
112                 goto out;
113 
114         strcpy(card->driver, "AD1848");
115         strcpy(card->shortname, pcm->name);
116 
117         sprintf(card->longname, "%s at 0x%lx, irq %d, dma %d",
118                 pcm->name, chip->port, irq[n], dma1[n]);
119         if (thinkpad[n])
120                 strcat(card->longname, " [Thinkpad]");
121 
122         snd_card_set_dev(card, dev);
123 
124         error = snd_card_register(card);
125         if (error < 0)
126                 goto out;
127 
128         dev_set_drvdata(dev, card);
129         return 0;
130 
131 out:    snd_card_free(card);
132         return error;
133 }
134 
135 static int snd_ad1848_remove(struct device *dev, unsigned int n)
136 {
137         snd_card_free(dev_get_drvdata(dev));
138         return 0;
139 }
140 
141 #ifdef CONFIG_PM
142 static int snd_ad1848_suspend(struct device *dev, unsigned int n, pm_message_t state)
143 {
144         struct snd_card *card = dev_get_drvdata(dev);
145         struct snd_wss *chip = card->private_data;
146 
147         snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);
148         chip->suspend(chip);
149         return 0;
150 }
151 
152 static int snd_ad1848_resume(struct device *dev, unsigned int n)
153 {
154         struct snd_card *card = dev_get_drvdata(dev);
155         struct snd_wss *chip = card->private_data;
156 
157         chip->resume(chip);
158         snd_power_change_state(card, SNDRV_CTL_POWER_D0);
159         return 0;
160 }
161 #endif
162 
163 static struct isa_driver snd_ad1848_driver = {
164         .match          = snd_ad1848_match,
165         .probe          = snd_ad1848_probe,
166         .remove         = snd_ad1848_remove,
167 #ifdef CONFIG_PM
168         .suspend        = snd_ad1848_suspend,
169         .resume         = snd_ad1848_resume,
170 #endif
171         .driver         = {
172                 .name   = DEV_NAME
173         }
174 };
175 
176 static int __init alsa_card_ad1848_init(void)
177 {
178         return isa_register_driver(&snd_ad1848_driver, SNDRV_CARDS);
179 }
180 
181 static void __exit alsa_card_ad1848_exit(void)
182 {
183         isa_unregister_driver(&snd_ad1848_driver);
184 }
185 
186 module_init(alsa_card_ad1848_init);
187 module_exit(alsa_card_ad1848_exit);
188 

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