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
22 MODULE_DESCRIPTION(CRD_NAME);
23 MODULE_AUTHOR("Tugrul Galatali <galatalt@stuy.edu>, Jaroslav Kysela <perex@perex.cz>");
24 MODULE_LICENSE("GPL");
25
26 static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX; /* Index 0-MAX */
27 static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR; /* ID for this card */
28 static bool enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE; /* Enable this card */
29 static long port[SNDRV_CARDS] = SNDRV_DEFAULT_PORT; /* PnP setup */
30 static int irq[SNDRV_CARDS] = SNDRV_DEFAULT_IRQ; /* 5,7,9,11,12,15 */
31 static int dma1[SNDRV_CARDS] = SNDRV_DEFAULT_DMA; /* 0,1,3,5,6,7 */
32 static bool thinkpad[SNDRV_CARDS]; /* Thinkpad special case */
33
34 module_param_array(index, int, NULL, 0444);
35 MODULE_PARM_DESC(index, "Index value for " CRD_NAME " soundcard.");
36 module_param_array(id, charp, NULL, 0444);
37 MODULE_PARM_DESC(id, "ID string for " CRD_NAME " soundcard.");
38 module_param_array(enable, bool, NULL, 0444);
39 MODULE_PARM_DESC(enable, "Enable " CRD_NAME " soundcard.");
40 module_param_hw_array(port, long, ioport, NULL, 0444);
41 MODULE_PARM_DESC(port, "Port # for " CRD_NAME " driver.");
42 module_param_hw_array(irq, int, irq, NULL, 0444);
43 MODULE_PARM_DESC(irq, "IRQ # for " CRD_NAME " driver.");
44 module_param_hw_array(dma1, int, dma, NULL, 0444);
45 MODULE_PARM_DESC(dma1, "DMA1 # for " CRD_NAME " driver.");
46 module_param_array(thinkpad, bool, NULL, 0444);
47 MODULE_PARM_DESC(thinkpad, "Enable only for the onboard CS4248 of IBM Thinkpad 360/750/755 series.");
48
snd_ad1848_match(struct device * dev,unsigned int n)49 static 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
snd_ad1848_probe(struct device * dev,unsigned int n)69 static 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
snd_ad1848_suspend(struct device * dev,unsigned int n,pm_message_t state)116 static 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
snd_ad1848_resume(struct device * dev,unsigned int n)126 static 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
137 static 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
149 module_isa_driver(snd_ad1848_driver, SNDRV_CARDS);
150
