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
37MODULE_DESCRIPTION(CRD_NAME);
38MODULE_AUTHOR("Jaroslav Kysela <perex@perex.cz>");
39MODULE_LICENSE("GPL");
40MODULE_SUPPORTED_DEVICE("{{Crystal Semiconductors,CS4231}}");
41
42static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;	/* Index 0-MAX */
43static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;	/* ID for this card */
44static bool enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE;	/* Enable this card */
45static long port[SNDRV_CARDS] = SNDRV_DEFAULT_PORT;	/* PnP setup */
46static long mpu_port[SNDRV_CARDS] = SNDRV_DEFAULT_PORT;	/* PnP setup */
47static int irq[SNDRV_CARDS] = SNDRV_DEFAULT_IRQ;	/* 5,7,9,11,12,15 */
48static int mpu_irq[SNDRV_CARDS] = SNDRV_DEFAULT_IRQ;	/* 9,11,12,15 */
49static int dma1[SNDRV_CARDS] = SNDRV_DEFAULT_DMA;	/* 0,1,3,5,6,7 */
50static int dma2[SNDRV_CARDS] = SNDRV_DEFAULT_DMA;	/* 0,1,3,5,6,7 */
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(mpu_port, long, NULL, 0444);
61MODULE_PARM_DESC(mpu_port, "MPU-401 port # for " CRD_NAME " driver.");
62module_param_array(irq, int, NULL, 0444);
63MODULE_PARM_DESC(irq, "IRQ # for " CRD_NAME " driver.");
64module_param_array(mpu_irq, int, NULL, 0444);
65MODULE_PARM_DESC(mpu_irq, "MPU-401 IRQ # for " CRD_NAME " driver.");
66module_param_array(dma1, int, NULL, 0444);
67MODULE_PARM_DESC(dma1, "DMA1 # for " CRD_NAME " driver.");
68module_param_array(dma2, int, NULL, 0444);
69MODULE_PARM_DESC(dma2, "DMA2 # for " CRD_NAME " driver.");
70
71static 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
91static 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
144out:	snd_card_free(card);
145	return error;
146}
147
148static 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
155static 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
165static 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
176static 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
189static int __init alsa_card_cs4231_init(void)
190{
191	return isa_register_driver(&snd_cs4231_driver, SNDRV_CARDS);
192}
193
194static void __exit alsa_card_cs4231_exit(void)
195{
196	isa_unregister_driver(&snd_cs4231_driver);
197}
198
199module_init(alsa_card_cs4231_init);
200module_exit(alsa_card_cs4231_exit);
201