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