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Linux/sound/isa/cs423x/cs4231.c

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  1 /*
  2  *  Generic driver for CS4231 chips
  3  *  Copyright (c) by Jaroslav Kysela <perex@perex.cz>
  4  *  Originally the CS4232/CS4232A driver, modified for use on CS4231 by
  5  *  Tugrul Galatali <galatalt@stuy.edu>
  6  *
  7  *   This program is free software; you can redistribute it and/or modify
  8  *   it under the terms of the GNU General Public License as published by
  9  *   the Free Software Foundation; either version 2 of the License, or
 10  *   (at your option) any later version.
 11  *
 12  *   This program is distributed in the hope that it will be useful,
 13  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
 14  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 15  *   GNU General Public License for more details.
 16  *
 17  *   You should have received a copy of the GNU General Public License
 18  *   along with this program; if not, write to the Free Software
 19  *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
 20  *
 21  */
 22 
 23 #include <linux/init.h>
 24 #include <linux/err.h>
 25 #include <linux/isa.h>
 26 #include <linux/time.h>
 27 #include <linux/wait.h>
 28 #include <linux/module.h>
 29 #include <sound/core.h>
 30 #include <sound/wss.h>
 31 #include <sound/mpu401.h>
 32 #include <sound/initval.h>
 33 
 34 #define CRD_NAME "Generic CS4231"
 35 #define DEV_NAME "cs4231"
 36 
 37 MODULE_DESCRIPTION(CRD_NAME);
 38 MODULE_AUTHOR("Jaroslav Kysela <perex@perex.cz>");
 39 MODULE_LICENSE("GPL");
 40 MODULE_SUPPORTED_DEVICE("{{Crystal Semiconductors,CS4231}}");
 41 
 42 static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;      /* Index 0-MAX */
 43 static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;       /* ID for this card */
 44 static bool enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE; /* Enable this card */
 45 static long port[SNDRV_CARDS] = SNDRV_DEFAULT_PORT;     /* PnP setup */
 46 static long mpu_port[SNDRV_CARDS] = SNDRV_DEFAULT_PORT; /* PnP setup */
 47 static int irq[SNDRV_CARDS] = SNDRV_DEFAULT_IRQ;        /* 5,7,9,11,12,15 */
 48 static int mpu_irq[SNDRV_CARDS] = SNDRV_DEFAULT_IRQ;    /* 9,11,12,15 */
 49 static int dma1[SNDRV_CARDS] = SNDRV_DEFAULT_DMA;       /* 0,1,3,5,6,7 */
 50 static int dma2[SNDRV_CARDS] = SNDRV_DEFAULT_DMA;       /* 0,1,3,5,6,7 */
 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(mpu_port, long, NULL, 0444);
 61 MODULE_PARM_DESC(mpu_port, "MPU-401 port # for " CRD_NAME " driver.");
 62 module_param_array(irq, int, NULL, 0444);
 63 MODULE_PARM_DESC(irq, "IRQ # for " CRD_NAME " driver.");
 64 module_param_array(mpu_irq, int, NULL, 0444);
 65 MODULE_PARM_DESC(mpu_irq, "MPU-401 IRQ # for " CRD_NAME " driver.");
 66 module_param_array(dma1, int, NULL, 0444);
 67 MODULE_PARM_DESC(dma1, "DMA1 # for " CRD_NAME " driver.");
 68 module_param_array(dma2, int, NULL, 0444);
 69 MODULE_PARM_DESC(dma2, "DMA2 # for " CRD_NAME " driver.");
 70 
 71 static int snd_cs4231_match(struct device *dev, unsigned int n)
 72 {
 73         if (!enable[n])
 74                 return 0;
 75 
 76         if (port[n] == SNDRV_AUTO_PORT) {
 77                 dev_err(dev, "please specify port\n");
 78                 return 0;
 79         }
 80         if (irq[n] == SNDRV_AUTO_IRQ) {
 81                 dev_err(dev, "please specify irq\n");
 82                 return 0;
 83         }
 84         if (dma1[n] == SNDRV_AUTO_DMA) {
 85                 dev_err(dev, "please specify dma1\n");
 86                 return 0;
 87         }
 88         return 1;
 89 }
 90 
 91 static int snd_cs4231_probe(struct device *dev, unsigned int n)
 92 {
 93         struct snd_card *card;
 94         struct snd_wss *chip;
 95         struct snd_pcm *pcm;
 96         int error;
 97 
 98         error = snd_card_create(index[n], id[n], THIS_MODULE, 0, &card);
 99         if (error < 0)
100                 return error;
101 
102         error = snd_wss_create(card, port[n], -1, irq[n], dma1[n], dma2[n],
103                         WSS_HW_DETECT, 0, &chip);
104         if (error < 0)
105                 goto out;
106 
107         card->private_data = chip;
108 
109         error = snd_wss_pcm(chip, 0, &pcm);
110         if (error < 0)
111                 goto out;
112 
113         strcpy(card->driver, "CS4231");
114         strcpy(card->shortname, pcm->name);
115 
116         sprintf(card->longname, "%s at 0x%lx, irq %d, dma %d",
117                 pcm->name, chip->port, irq[n], dma1[n]);
118         if (dma2[n] >= 0)
119                 sprintf(card->longname + strlen(card->longname), "&%d", dma2[n]);
120 
121         error = snd_wss_mixer(chip);
122         if (error < 0)
123                 goto out;
124 
125         error = snd_wss_timer(chip, 0, NULL);
126         if (error < 0)
127                 goto out;
128 
129         if (mpu_port[n] > 0 && mpu_port[n] != SNDRV_AUTO_PORT) {
130                 if (mpu_irq[n] == SNDRV_AUTO_IRQ)
131                         mpu_irq[n] = -1;
132                 if (snd_mpu401_uart_new(card, 0, MPU401_HW_CS4232,
133                                         mpu_port[n], 0, mpu_irq[n],
134                                         NULL) < 0)
135                         dev_warn(dev, "MPU401 not detected\n");
136         }
137 
138         snd_card_set_dev(card, dev);
139 
140         error = snd_card_register(card);
141         if (error < 0)
142                 goto out;
143 
144         dev_set_drvdata(dev, card);
145         return 0;
146 
147 out:    snd_card_free(card);
148         return error;
149 }
150 
151 static int snd_cs4231_remove(struct device *dev, unsigned int n)
152 {
153         snd_card_free(dev_get_drvdata(dev));
154         return 0;
155 }
156 
157 #ifdef CONFIG_PM
158 static int snd_cs4231_suspend(struct device *dev, unsigned int n, pm_message_t state)
159 {
160         struct snd_card *card = dev_get_drvdata(dev);
161         struct snd_wss *chip = card->private_data;
162 
163         snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);
164         chip->suspend(chip);
165         return 0;
166 }
167 
168 static int snd_cs4231_resume(struct device *dev, unsigned int n)
169 {
170         struct snd_card *card = dev_get_drvdata(dev);
171         struct snd_wss *chip = card->private_data;
172 
173         chip->resume(chip);
174         snd_power_change_state(card, SNDRV_CTL_POWER_D0);
175         return 0;
176 }
177 #endif
178 
179 static struct isa_driver snd_cs4231_driver = {
180         .match          = snd_cs4231_match,
181         .probe          = snd_cs4231_probe,
182         .remove         = snd_cs4231_remove,
183 #ifdef CONFIG_PM
184         .suspend        = snd_cs4231_suspend,
185         .resume         = snd_cs4231_resume,
186 #endif
187         .driver         = {
188                 .name   = DEV_NAME
189         }
190 };
191 
192 static int __init alsa_card_cs4231_init(void)
193 {
194         return isa_register_driver(&snd_cs4231_driver, SNDRV_CARDS);
195 }
196 
197 static void __exit alsa_card_cs4231_exit(void)
198 {
199         isa_unregister_driver(&snd_cs4231_driver);
200 }
201 
202 module_init(alsa_card_cs4231_init);
203 module_exit(alsa_card_cs4231_exit);
204 

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