1// SPDX-License-Identifier: GPL-2.0-or-later
2/*
3 *  Generic driver for AD1848/AD1847/CS4248 chips (0.1 Alpha)
4 *  Copyright (c) by Tugrul Galatali <galatalt@stuy.edu>,
5 *                   Jaroslav Kysela <perex@perex.cz>
6 *  Based on card-4232.c by Jaroslav Kysela <perex@perex.cz>
7 */
8
9#include <linux/init.h>
10#include <linux/err.h>
11#include <linux/isa.h>
12#include <linux/time.h>
13#include <linux/wait.h>
14#include <linux/module.h>
15#include <sound/core.h>
16#include <sound/wss.h>
17#include <sound/initval.h>
18
19#define CRD_NAME "Generic AD1848/AD1847/CS4248"
20#define DEV_NAME "ad1848"
21
22MODULE_DESCRIPTION(CRD_NAME);
23MODULE_AUTHOR("Tugrul Galatali <galatalt@stuy.edu>, Jaroslav Kysela <perex@perex.cz>");
24MODULE_LICENSE("GPL");
25
26static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;	/* Index 0-MAX */
27static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;	/* ID for this card */
28static bool enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE;	/* Enable this card */
29static long port[SNDRV_CARDS] = SNDRV_DEFAULT_PORT;	/* PnP setup */
30static int irq[SNDRV_CARDS] = SNDRV_DEFAULT_IRQ;	/* 5,7,9,11,12,15 */
31static int dma1[SNDRV_CARDS] = SNDRV_DEFAULT_DMA;	/* 0,1,3,5,6,7 */
32static bool thinkpad[SNDRV_CARDS];			/* Thinkpad special case */
33
34module_param_array(index, int, NULL, 0444);
35MODULE_PARM_DESC(index, "Index value for " CRD_NAME " soundcard.");
36module_param_array(id, charp, NULL, 0444);
37MODULE_PARM_DESC(id, "ID string for " CRD_NAME " soundcard.");
38module_param_array(enable, bool, NULL, 0444);
39MODULE_PARM_DESC(enable, "Enable " CRD_NAME " soundcard.");
40module_param_hw_array(port, long, ioport, NULL, 0444);
41MODULE_PARM_DESC(port, "Port # for " CRD_NAME " driver.");
42module_param_hw_array(irq, int, irq, NULL, 0444);
43MODULE_PARM_DESC(irq, "IRQ # for " CRD_NAME " driver.");
44module_param_hw_array(dma1, int, dma, NULL, 0444);
45MODULE_PARM_DESC(dma1, "DMA1 # for " CRD_NAME " driver.");
46module_param_array(thinkpad, bool, NULL, 0444);
47MODULE_PARM_DESC(thinkpad, "Enable only for the onboard CS4248 of IBM Thinkpad 360/750/755 series.");
48
49static int snd_ad1848_match(struct device *dev, unsigned int n)
50{
51	if (!enable[n])
52		return 0;
53
54	if (port[n] == SNDRV_AUTO_PORT) {
55		dev_err(dev, "please specify port\n");
56		return 0;
57	}
58	if (irq[n] == SNDRV_AUTO_IRQ) {
59		dev_err(dev, "please specify irq\n");
60		return 0;
61	}
62	if (dma1[n] == SNDRV_AUTO_DMA) {
63		dev_err(dev, "please specify dma1\n");
64		return 0;
65	}
66	return 1;
67}
68
69static int snd_ad1848_probe(struct device *dev, unsigned int n)
70{
71	struct snd_card *card;
72	struct snd_wss *chip;
73	int error;
74
75	error = snd_devm_card_new(dev, index[n], id[n], THIS_MODULE, 0, &card);
76	if (error < 0)
77		return error;
78
79	error = snd_wss_create(card, port[n], -1, irq[n], dma1[n], -1,
80			thinkpad[n] ? WSS_HW_THINKPAD : WSS_HW_DETECT,
81			0, &chip);
82	if (error < 0)
83		return error;
84
85	card->private_data = chip;
86
87	error = snd_wss_pcm(chip, 0);
88	if (error < 0)
89		return error;
90
91	error = snd_wss_mixer(chip);
92	if (error < 0)
93		return error;
94
95	strscpy(card->driver, "AD1848", sizeof(card->driver));
96	strscpy(card->shortname, chip->pcm->name, sizeof(card->shortname));
97
98	if (!thinkpad[n])
99		scnprintf(card->longname, sizeof(card->longname),
100			  "%s at 0x%lx, irq %d, dma %d",
101			  chip->pcm->name, chip->port, irq[n], dma1[n]);
102	else
103		scnprintf(card->longname, sizeof(card->longname),
104			  "%s at 0x%lx, irq %d, dma %d [Thinkpad]",
105			  chip->pcm->name, chip->port, irq[n], dma1[n]);
106
107	error = snd_card_register(card);
108	if (error < 0)
109		return error;
110
111	dev_set_drvdata(dev, card);
112	return 0;
113}
114
115#ifdef CONFIG_PM
116static int snd_ad1848_suspend(struct device *dev, unsigned int n, pm_message_t state)
117{
118	struct snd_card *card = dev_get_drvdata(dev);
119	struct snd_wss *chip = card->private_data;
120
121	snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);
122	chip->suspend(chip);
123	return 0;
124}
125
126static int snd_ad1848_resume(struct device *dev, unsigned int n)
127{
128	struct snd_card *card = dev_get_drvdata(dev);
129	struct snd_wss *chip = card->private_data;
130
131	chip->resume(chip);
132	snd_power_change_state(card, SNDRV_CTL_POWER_D0);
133	return 0;
134}
135#endif
136
137static struct isa_driver snd_ad1848_driver = {
138	.match		= snd_ad1848_match,
139	.probe		= snd_ad1848_probe,
140#ifdef CONFIG_PM
141	.suspend	= snd_ad1848_suspend,
142	.resume		= snd_ad1848_resume,
143#endif
144	.driver		= {
145		.name	= DEV_NAME
146	}
147};
148
149module_isa_driver(snd_ad1848_driver, SNDRV_CARDS);
150