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
pdacf_release(struct pcmcia_device * link)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 */
snd_pdacf_free(struct snd_pdacf * pdacf)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
snd_pdacf_dev_free(struct snd_device * device)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 */
snd_pdacf_probe(struct pcmcia_device * link)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 /* find an empty slot from the card list */
89 for (i = 0; i < SNDRV_CARDS; i++) {
90 if (! card_list[i])
91 break;
92 }
93 if (i >= SNDRV_CARDS) {
94 dev_err(&link->dev, "pdacf: too many cards found\n");
95 return -EINVAL;
96 }
97 if (! enable[i])
98 return -ENODEV; /* disabled explicitly */
99
100 /* ok, create a card instance */
101 err = snd_card_new(&link->dev, index[i], id[i], THIS_MODULE,
102 0, &card);
103 if (err < 0) {
104 dev_err(&link->dev, "pdacf: cannot create a card instance\n");
105 return err;
106 }
107
108 pdacf = snd_pdacf_create(card);
109 if (!pdacf) {
110 snd_card_free(card);
111 return -ENOMEM;
112 }
113
114 err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, pdacf, &ops);
115 if (err < 0) {
116 kfree(pdacf);
117 snd_card_free(card);
118 return err;
119 }
120
121 pdacf->index = i;
122 card_list[i] = card;
123
124 pdacf->p_dev = link;
125 link->priv = pdacf;
126
127 link->resource[0]->flags |= IO_DATA_PATH_WIDTH_AUTO;
128 link->resource[0]->end = 16;
129
130 link->config_flags = CONF_ENABLE_IRQ | CONF_ENABLE_PULSE_IRQ;
131 link->config_index = 1;
132 link->config_regs = PRESENT_OPTION;
133
134 return pdacf_config(link);
135 }
136
137
138 /**
139 * snd_pdacf_assign_resources - initialize the hardware and card instance.
140 * @pdacf: context
141 * @port: i/o port for the card
142 * @irq: irq number for the card
143 *
144 * this function assigns the specified port and irq, boot the card,
145 * create pcm and control instances, and initialize the rest hardware.
146 *
147 * returns 0 if successful, or a negative error code.
148 */
snd_pdacf_assign_resources(struct snd_pdacf * pdacf,int port,int irq)149 static int snd_pdacf_assign_resources(struct snd_pdacf *pdacf, int port, int irq)
150 {
151 int err;
152 struct snd_card *card = pdacf->card;
153
154 dev_dbg(card->dev, "pdacf assign resources: port = 0x%x, irq = %d\n", port, irq);
155 pdacf->port = port;
156 pdacf->irq = irq;
157 pdacf->chip_status |= PDAUDIOCF_STAT_IS_CONFIGURED;
158
159 err = snd_pdacf_ak4117_create(pdacf);
160 if (err < 0)
161 return err;
162
163 strcpy(card->driver, "PDAudio-CF");
164 sprintf(card->shortname, "Core Sound %s", card->driver);
165 sprintf(card->longname, "%s at 0x%x, irq %i",
166 card->shortname, port, irq);
167
168 err = snd_pdacf_pcm_new(pdacf);
169 if (err < 0)
170 return err;
171
172 err = snd_card_register(card);
173 if (err < 0)
174 return err;
175
176 return 0;
177 }
178
179
180 /*
181 * snd_pdacf_detach - detach callback for cs
182 */
snd_pdacf_detach(struct pcmcia_device * link)183 static void snd_pdacf_detach(struct pcmcia_device *link)
184 {
185 struct snd_pdacf *chip = link->priv;
186
187 if (chip->chip_status & PDAUDIOCF_STAT_IS_CONFIGURED)
188 snd_pdacf_powerdown(chip);
189 chip->chip_status |= PDAUDIOCF_STAT_IS_STALE; /* to be sure */
190 snd_card_disconnect(chip->card);
191 snd_card_free_when_closed(chip->card);
192 }
193
194 /*
195 * configuration callback
196 */
197
pdacf_config(struct pcmcia_device * link)198 static int pdacf_config(struct pcmcia_device *link)
199 {
200 struct snd_pdacf *pdacf = link->priv;
201 int ret;
202
203 link->config_index = 0x5;
204 link->config_flags |= CONF_ENABLE_IRQ | CONF_ENABLE_PULSE_IRQ;
205
206 ret = pcmcia_request_io(link);
207 if (ret)
208 goto failed_preirq;
209
210 ret = request_threaded_irq(link->irq, pdacf_interrupt,
211 pdacf_threaded_irq,
212 IRQF_SHARED, link->devname, link->priv);
213 if (ret)
214 goto failed_preirq;
215
216 ret = pcmcia_enable_device(link);
217 if (ret)
218 goto failed;
219
220 if (snd_pdacf_assign_resources(pdacf, link->resource[0]->start,
221 link->irq) < 0)
222 goto failed;
223
224 pdacf->card->sync_irq = link->irq;
225 return 0;
226
227 failed:
228 free_irq(link->irq, link->priv);
229 failed_preirq:
230 pcmcia_disable_device(link);
231 return -ENODEV;
232 }
233
234 #ifdef CONFIG_PM
235
pdacf_suspend(struct pcmcia_device * link)236 static int pdacf_suspend(struct pcmcia_device *link)
237 {
238 struct snd_pdacf *chip = link->priv;
239
240 if (chip)
241 snd_pdacf_suspend(chip);
242
243 return 0;
244 }
245
pdacf_resume(struct pcmcia_device * link)246 static int pdacf_resume(struct pcmcia_device *link)
247 {
248 struct snd_pdacf *chip = link->priv;
249
250 if (pcmcia_dev_present(link)) {
251 if (chip)
252 snd_pdacf_resume(chip);
253 }
254
255 return 0;
256 }
257
258 #endif
259
260 /*
261 * Module entry points
262 */
263 static const struct pcmcia_device_id snd_pdacf_ids[] = {
264 /* this is too general PCMCIA_DEVICE_MANF_CARD(0x015d, 0x4c45), */
265 PCMCIA_DEVICE_PROD_ID12("Core Sound","PDAudio-CF",0x396d19d2,0x71717b49),
266 PCMCIA_DEVICE_NULL
267 };
268 MODULE_DEVICE_TABLE(pcmcia, snd_pdacf_ids);
269
270 static struct pcmcia_driver pdacf_cs_driver = {
271 .owner = THIS_MODULE,
272 .name = "snd-pdaudiocf",
273 .probe = snd_pdacf_probe,
274 .remove = snd_pdacf_detach,
275 .id_table = snd_pdacf_ids,
276 #ifdef CONFIG_PM
277 .suspend = pdacf_suspend,
278 .resume = pdacf_resume,
279 #endif
280 };
281 module_pcmcia_driver(pdacf_cs_driver);
282