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");
25MODULE_SUPPORTED_DEVICE("{{Analog Devices,AD1848},"
26	        "{Analog Devices,AD1847},"
27		"{Crystal Semiconductors,CS4248}}");
28
29static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;	/* Index 0-MAX */
30static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;	/* ID for this card */
31static bool enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE;	/* Enable this card */
32static long port[SNDRV_CARDS] = SNDRV_DEFAULT_PORT;	/* PnP setup */
33static int irq[SNDRV_CARDS] = SNDRV_DEFAULT_IRQ;	/* 5,7,9,11,12,15 */
34static int dma1[SNDRV_CARDS] = SNDRV_DEFAULT_DMA;	/* 0,1,3,5,6,7 */
35static bool thinkpad[SNDRV_CARDS];			/* Thinkpad special case */
36
37module_param_array(index, int, NULL, 0444);
38MODULE_PARM_DESC(index, "Index value for " CRD_NAME " soundcard.");
39module_param_array(id, charp, NULL, 0444);
40MODULE_PARM_DESC(id, "ID string for " CRD_NAME " soundcard.");
41module_param_array(enable, bool, NULL, 0444);
42MODULE_PARM_DESC(enable, "Enable " CRD_NAME " soundcard.");
43module_param_hw_array(port, long, ioport, NULL, 0444);
44MODULE_PARM_DESC(port, "Port # for " CRD_NAME " driver.");
45module_param_hw_array(irq, int, irq, NULL, 0444);
46MODULE_PARM_DESC(irq, "IRQ # for " CRD_NAME " driver.");
47module_param_hw_array(dma1, int, dma, NULL, 0444);
48MODULE_PARM_DESC(dma1, "DMA1 # for " CRD_NAME " driver.");
49module_param_array(thinkpad, bool, NULL, 0444);
50MODULE_PARM_DESC(thinkpad, "Enable only for the onboard CS4248 of IBM Thinkpad 360/750/755 series.");
51
52static int snd_ad1848_match(struct device *dev, unsigned int n)
53{
54	if (!enable[n])
55		return 0;
56
57	if (port[n] == SNDRV_AUTO_PORT) {
58		dev_err(dev, "please specify port\n");
59		return 0;
60	}
61	if (irq[n] == SNDRV_AUTO_IRQ) {
62		dev_err(dev, "please specify irq\n");
63		return 0;
64	}
65	if (dma1[n] == SNDRV_AUTO_DMA) {
66		dev_err(dev, "please specify dma1\n");
67		return 0;
68	}
69	return 1;
70}
71
72static int snd_ad1848_probe(struct device *dev, unsigned int n)
73{
74	struct snd_card *card;
75	struct snd_wss *chip;
76	int error;
77
78	error = snd_card_new(dev, index[n], id[n], THIS_MODULE, 0, &card);
79	if (error < 0)
80		return error;
81
82	error = snd_wss_create(card, port[n], -1, irq[n], dma1[n], -1,
83			thinkpad[n] ? WSS_HW_THINKPAD : WSS_HW_DETECT,
84			0, &chip);
85	if (error < 0)
86		goto out;
87
88	card->private_data = chip;
89
90	error = snd_wss_pcm(chip, 0);
91	if (error < 0)
92		goto out;
93
94	error = snd_wss_mixer(chip);
95	if (error < 0)
96		goto out;
97
98	strlcpy(card->driver, "AD1848", sizeof(card->driver));
99	strlcpy(card->shortname, chip->pcm->name, sizeof(card->shortname));
100
101	if (!thinkpad[n])
102		snprintf(card->longname, sizeof(card->longname),
103			 "%s at 0x%lx, irq %d, dma %d",
104			 chip->pcm->name, chip->port, irq[n], dma1[n]);
105	else
106		snprintf(card->longname, sizeof(card->longname),
107			 "%s at 0x%lx, irq %d, dma %d [Thinkpad]",
108			 chip->pcm->name, chip->port, irq[n], dma1[n]);
109
110	error = snd_card_register(card);
111	if (error < 0)
112		goto out;
113
114	dev_set_drvdata(dev, card);
115	return 0;
116
117out:	snd_card_free(card);
118	return error;
119}
120
121static int snd_ad1848_remove(struct device *dev, unsigned int n)
122{
123	snd_card_free(dev_get_drvdata(dev));
124	return 0;
125}
126
127#ifdef CONFIG_PM
128static int snd_ad1848_suspend(struct device *dev, unsigned int n, pm_message_t state)
129{
130	struct snd_card *card = dev_get_drvdata(dev);
131	struct snd_wss *chip = card->private_data;
132
133	snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);
134	chip->suspend(chip);
135	return 0;
136}
137
138static int snd_ad1848_resume(struct device *dev, unsigned int n)
139{
140	struct snd_card *card = dev_get_drvdata(dev);
141	struct snd_wss *chip = card->private_data;
142
143	chip->resume(chip);
144	snd_power_change_state(card, SNDRV_CTL_POWER_D0);
145	return 0;
146}
147#endif
148
149static struct isa_driver snd_ad1848_driver = {
150	.match		= snd_ad1848_match,
151	.probe		= snd_ad1848_probe,
152	.remove		= snd_ad1848_remove,
153#ifdef CONFIG_PM
154	.suspend	= snd_ad1848_suspend,
155	.resume		= snd_ad1848_resume,
156#endif
157	.driver		= {
158		.name	= DEV_NAME
159	}
160};
161
162module_isa_driver(snd_ad1848_driver, SNDRV_CARDS);
163