xref: /openbmc/linux/sound/isa/cs423x/cs4231.c (revision d7a3d85e)
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 	int error;
96 
97 	error = snd_card_new(dev, index[n], id[n], THIS_MODULE, 0, &card);
98 	if (error < 0)
99 		return error;
100 
101 	error = snd_wss_create(card, port[n], -1, irq[n], dma1[n], dma2[n],
102 			WSS_HW_DETECT, 0, &chip);
103 	if (error < 0)
104 		goto out;
105 
106 	card->private_data = chip;
107 
108 	error = snd_wss_pcm(chip, 0);
109 	if (error < 0)
110 		goto out;
111 
112 	strcpy(card->driver, "CS4231");
113 	strcpy(card->shortname, chip->pcm->name);
114 
115 	sprintf(card->longname, "%s at 0x%lx, irq %d, dma %d",
116 		chip->pcm->name, chip->port, irq[n], dma1[n]);
117 	if (dma2[n] >= 0)
118 		sprintf(card->longname + strlen(card->longname), "&%d", dma2[n]);
119 
120 	error = snd_wss_mixer(chip);
121 	if (error < 0)
122 		goto out;
123 
124 	error = snd_wss_timer(chip, 0);
125 	if (error < 0)
126 		goto out;
127 
128 	if (mpu_port[n] > 0 && mpu_port[n] != SNDRV_AUTO_PORT) {
129 		if (mpu_irq[n] == SNDRV_AUTO_IRQ)
130 			mpu_irq[n] = -1;
131 		if (snd_mpu401_uart_new(card, 0, MPU401_HW_CS4232,
132 					mpu_port[n], 0, mpu_irq[n],
133 					NULL) < 0)
134 			dev_warn(dev, "MPU401 not detected\n");
135 	}
136 
137 	error = snd_card_register(card);
138 	if (error < 0)
139 		goto out;
140 
141 	dev_set_drvdata(dev, card);
142 	return 0;
143 
144 out:	snd_card_free(card);
145 	return error;
146 }
147 
148 static int snd_cs4231_remove(struct device *dev, unsigned int n)
149 {
150 	snd_card_free(dev_get_drvdata(dev));
151 	return 0;
152 }
153 
154 #ifdef CONFIG_PM
155 static int snd_cs4231_suspend(struct device *dev, unsigned int n, pm_message_t state)
156 {
157 	struct snd_card *card = dev_get_drvdata(dev);
158 	struct snd_wss *chip = card->private_data;
159 
160 	snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);
161 	chip->suspend(chip);
162 	return 0;
163 }
164 
165 static int snd_cs4231_resume(struct device *dev, unsigned int n)
166 {
167 	struct snd_card *card = dev_get_drvdata(dev);
168 	struct snd_wss *chip = card->private_data;
169 
170 	chip->resume(chip);
171 	snd_power_change_state(card, SNDRV_CTL_POWER_D0);
172 	return 0;
173 }
174 #endif
175 
176 static struct isa_driver snd_cs4231_driver = {
177 	.match		= snd_cs4231_match,
178 	.probe		= snd_cs4231_probe,
179 	.remove		= snd_cs4231_remove,
180 #ifdef CONFIG_PM
181 	.suspend	= snd_cs4231_suspend,
182 	.resume		= snd_cs4231_resume,
183 #endif
184 	.driver		= {
185 		.name	= DEV_NAME
186 	}
187 };
188 
189 static int __init alsa_card_cs4231_init(void)
190 {
191 	return isa_register_driver(&snd_cs4231_driver, SNDRV_CARDS);
192 }
193 
194 static void __exit alsa_card_cs4231_exit(void)
195 {
196 	isa_unregister_driver(&snd_cs4231_driver);
197 }
198 
199 module_init(alsa_card_cs4231_init);
200 module_exit(alsa_card_cs4231_exit);
201