1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3 * Driver for Sound Core PDAudioCF soundcard
4 *
5 * Copyright (c) 2003 by Jaroslav Kysela <perex@perex.cz>
6 */
7
8 #include <sound/core.h>
9 #include <linux/slab.h>
10 #include <linux/module.h>
11 #include <pcmcia/ciscode.h>
12 #include <pcmcia/cisreg.h>
13 #include "pdaudiocf.h"
14 #include <sound/initval.h>
15 #include <linux/init.h>
16
17 /*
18 */
19
20 #define CARD_NAME "PDAudio-CF"
21
22 MODULE_AUTHOR("Jaroslav Kysela <perex@perex.cz>");
23 MODULE_DESCRIPTION("Sound Core " CARD_NAME);
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_PNP; /* Enable switches */
29
30 module_param_array(index, int, NULL, 0444);
31 MODULE_PARM_DESC(index, "Index value for " CARD_NAME " soundcard.");
32 module_param_array(id, charp, NULL, 0444);
33 MODULE_PARM_DESC(id, "ID string for " CARD_NAME " soundcard.");
34 module_param_array(enable, bool, NULL, 0444);
35 MODULE_PARM_DESC(enable, "Enable " CARD_NAME " soundcard.");
36
37 /*
38 */
39
40 static struct snd_card *card_list[SNDRV_CARDS];
41
42 /*
43 * prototypes
44 */
45 static int pdacf_config(struct pcmcia_device *link);
46 static void snd_pdacf_detach(struct pcmcia_device *p_dev);
47
48 static void pdacf_release(struct pcmcia_device *link)
49 {
50 free_irq(link->irq, link->priv);
51 pcmcia_disable_device(link);
52 }
53
54 /*
55 * destructor
56 */
57 static int snd_pdacf_free(struct snd_pdacf *pdacf)
58 {
59 struct pcmcia_device *link = pdacf->p_dev;
60
61 pdacf_release(link);
62
63 card_list[pdacf->index] = NULL;
64 pdacf->card = NULL;
65
66 kfree(pdacf);
67 return 0;
68 }
69
70 static int snd_pdacf_dev_free(struct snd_device *device)
71 {
72 struct snd_pdacf *chip = device->device_data;
73 return snd_pdacf_free(chip);
74 }
75
76 /*
77 * snd_pdacf_attach - attach callback for cs
78 */
79 static int snd_pdacf_probe(struct pcmcia_device *link)
80 {
81 int i, err;
82 struct snd_pdacf *pdacf;
83 struct snd_card *card;
84 static const struct snd_device_ops ops = {
85 .dev_free = snd_pdacf_dev_free,
86 };
87
88 snd_printdd(KERN_DEBUG "pdacf_attach called\n");
89 /* find an empty slot from the card list */
90 for (i = 0; i < SNDRV_CARDS; i++) {
91 if (! card_list[i])
92 break;
93 }
94 if (i >= SNDRV_CARDS) {
95 snd_printk(KERN_ERR "pdacf: too many cards found\n");
96 return -EINVAL;
97 }
98 if (! enable[i])
99 return -ENODEV; /* disabled explicitly */
100
101 /* ok, create a card instance */
102 err = snd_card_new(&link->dev, index[i], id[i], THIS_MODULE,
103 0, &card);
104 if (err < 0) {
105 snd_printk(KERN_ERR "pdacf: cannot create a card instance\n");
106 return err;
107 }
108
109 pdacf = snd_pdacf_create(card);
110 if (!pdacf) {
111 snd_card_free(card);
112 return -ENOMEM;
113 }
114
115 err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, pdacf, &ops);
116 if (err < 0) {
117 kfree(pdacf);
118 snd_card_free(card);
119 return err;
120 }
121
122 pdacf->index = i;
123 card_list[i] = card;
124
125 pdacf->p_dev = link;
126 link->priv = pdacf;
127
128 link->resource[0]->flags |= IO_DATA_PATH_WIDTH_AUTO;
129 link->resource[0]->end = 16;
130
131 link->config_flags = CONF_ENABLE_IRQ | CONF_ENABLE_PULSE_IRQ;
132 link->config_index = 1;
133 link->config_regs = PRESENT_OPTION;
134
135 return pdacf_config(link);
136 }
137
138
139 /**
140 * snd_pdacf_assign_resources - initialize the hardware and card instance.
141 * @pdacf: context
142 * @port: i/o port for the card
143 * @irq: irq number for the card
144 *
145 * this function assigns the specified port and irq, boot the card,
146 * create pcm and control instances, and initialize the rest hardware.
147 *
148 * returns 0 if successful, or a negative error code.
149 */
150 static int snd_pdacf_assign_resources(struct snd_pdacf *pdacf, int port, int irq)
151 {
152 int err;
153 struct snd_card *card = pdacf->card;
154
155 snd_printdd(KERN_DEBUG "pdacf assign resources: port = 0x%x, irq = %d\n", port, irq);
156 pdacf->port = port;
157 pdacf->irq = irq;
158 pdacf->chip_status |= PDAUDIOCF_STAT_IS_CONFIGURED;
159
160 err = snd_pdacf_ak4117_create(pdacf);
161 if (err < 0)
162 return err;
163
164 strcpy(card->driver, "PDAudio-CF");
165 sprintf(card->shortname, "Core Sound %s", card->driver);
166 sprintf(card->longname, "%s at 0x%x, irq %i",
167 card->shortname, port, irq);
168
169 err = snd_pdacf_pcm_new(pdacf);
170 if (err < 0)
171 return err;
172
173 err = snd_card_register(card);
174 if (err < 0)
175 return err;
176
177 return 0;
178 }
179
180
181 /*
182 * snd_pdacf_detach - detach callback for cs
183 */
184 static void snd_pdacf_detach(struct pcmcia_device *link)
185 {
186 struct snd_pdacf *chip = link->priv;
187
188 snd_printdd(KERN_DEBUG "pdacf_detach called\n");
189
190 if (chip->chip_status & PDAUDIOCF_STAT_IS_CONFIGURED)
191 snd_pdacf_powerdown(chip);
192 chip->chip_status |= PDAUDIOCF_STAT_IS_STALE; /* to be sure */
193 snd_card_disconnect(chip->card);
194 snd_card_free_when_closed(chip->card);
195 }
196
197 /*
198 * configuration callback
199 */
200
201 static int pdacf_config(struct pcmcia_device *link)
202 {
203 struct snd_pdacf *pdacf = link->priv;
204 int ret;
205
206 snd_printdd(KERN_DEBUG "pdacf_config called\n");
207 link->config_index = 0x5;
208 link->config_flags |= CONF_ENABLE_IRQ | CONF_ENABLE_PULSE_IRQ;
209
210 ret = pcmcia_request_io(link);
211 if (ret)
212 goto failed_preirq;
213
214 ret = request_threaded_irq(link->irq, pdacf_interrupt,
215 pdacf_threaded_irq,
216 IRQF_SHARED, link->devname, link->priv);
217 if (ret)
218 goto failed_preirq;
219
220 ret = pcmcia_enable_device(link);
221 if (ret)
222 goto failed;
223
224 if (snd_pdacf_assign_resources(pdacf, link->resource[0]->start,
225 link->irq) < 0)
226 goto failed;
227
228 pdacf->card->sync_irq = link->irq;
229 return 0;
230
231 failed:
232 free_irq(link->irq, link->priv);
233 failed_preirq:
234 pcmcia_disable_device(link);
235 return -ENODEV;
236 }
237
238 #ifdef CONFIG_PM
239
240 static int pdacf_suspend(struct pcmcia_device *link)
241 {
242 struct snd_pdacf *chip = link->priv;
243
244 snd_printdd(KERN_DEBUG "SUSPEND\n");
245 if (chip) {
246 snd_printdd(KERN_DEBUG "snd_pdacf_suspend calling\n");
247 snd_pdacf_suspend(chip);
248 }
249
250 return 0;
251 }
252
253 static int pdacf_resume(struct pcmcia_device *link)
254 {
255 struct snd_pdacf *chip = link->priv;
256
257 snd_printdd(KERN_DEBUG "RESUME\n");
258 if (pcmcia_dev_present(link)) {
259 if (chip) {
260 snd_printdd(KERN_DEBUG "calling snd_pdacf_resume\n");
261 snd_pdacf_resume(chip);
262 }
263 }
264 snd_printdd(KERN_DEBUG "resume done!\n");
265
266 return 0;
267 }
268
269 #endif
270
271 /*
272 * Module entry points
273 */
274 static const struct pcmcia_device_id snd_pdacf_ids[] = {
275 /* this is too general PCMCIA_DEVICE_MANF_CARD(0x015d, 0x4c45), */
276 PCMCIA_DEVICE_PROD_ID12("Core Sound","PDAudio-CF",0x396d19d2,0x71717b49),
277 PCMCIA_DEVICE_NULL
278 };
279 MODULE_DEVICE_TABLE(pcmcia, snd_pdacf_ids);
280
281 static struct pcmcia_driver pdacf_cs_driver = {
282 .owner = THIS_MODULE,
283 .name = "snd-pdaudiocf",
284 .probe = snd_pdacf_probe,
285 .remove = snd_pdacf_detach,
286 .id_table = snd_pdacf_ids,
287 #ifdef CONFIG_PM
288 .suspend = pdacf_suspend,
289 .resume = pdacf_resume,
290 #endif
291 };
292 module_pcmcia_driver(pdacf_cs_driver);
293
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