Linux Kernel  3.7.1
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cs4231.c
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1 /*
2  * Generic driver for CS4231 chips
3  * Copyright (c) by Jaroslav Kysela <[email protected]>
4  * Originally the CS4232/CS4232A driver, modified for use on CS4231 by
5  * Tugrul Galatali <[email protected]>
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 
38 MODULE_AUTHOR("Jaroslav Kysela <[email protected]>");
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 __devinit 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 __devinit 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;
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 __devexit snd_cs4231_remove(struct device *dev, unsigned int n)
152 {
154  dev_set_drvdata(dev, NULL);
155  return 0;
156 }
157 
158 #ifdef CONFIG_PM
159 static int snd_cs4231_suspend(struct device *dev, unsigned int n, pm_message_t state)
160 {
161  struct snd_card *card = dev_get_drvdata(dev);
162  struct snd_wss *chip = card->private_data;
163 
165  chip->suspend(chip);
166  return 0;
167 }
168 
169 static int snd_cs4231_resume(struct device *dev, unsigned int n)
170 {
171  struct snd_card *card = dev_get_drvdata(dev);
172  struct snd_wss *chip = card->private_data;
173 
174  chip->resume(chip);
176  return 0;
177 }
178 #endif
179 
180 static struct isa_driver snd_cs4231_driver = {
181  .match = snd_cs4231_match,
182  .probe = snd_cs4231_probe,
183  .remove = __devexit_p(snd_cs4231_remove),
184 #ifdef CONFIG_PM
185  .suspend = snd_cs4231_suspend,
186  .resume = snd_cs4231_resume,
187 #endif
188  .driver = {
189  .name = DEV_NAME
190  }
191 };
192 
193 static int __init alsa_card_cs4231_init(void)
194 {
195  return isa_register_driver(&snd_cs4231_driver, SNDRV_CARDS);
196 }
197 
198 static void __exit alsa_card_cs4231_exit(void)
199 {
200  isa_unregister_driver(&snd_cs4231_driver);
201 }
202 
203 module_init(alsa_card_cs4231_init);
204 module_exit(alsa_card_cs4231_exit);