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
22MODULE_AUTHOR("Jaroslav Kysela <perex@perex.cz>");
23MODULE_DESCRIPTION("Sound Core " CARD_NAME);
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_PNP;	/* Enable switches */
29
30module_param_array(index, int, NULL, 0444);
31MODULE_PARM_DESC(index, "Index value for " CARD_NAME " soundcard.");
32module_param_array(id, charp, NULL, 0444);
33MODULE_PARM_DESC(id, "ID string for " CARD_NAME " soundcard.");
34module_param_array(enable, bool, NULL, 0444);
35MODULE_PARM_DESC(enable, "Enable " CARD_NAME " soundcard.");
36
37/*
38 */
39
40static struct snd_card *card_list[SNDRV_CARDS];
41
42/*
43 * prototypes
44 */
45static int pdacf_config(struct pcmcia_device *link);
46static void snd_pdacf_detach(struct pcmcia_device *p_dev);
47
48static 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 */
57static 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
70static 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 */
79static 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 */
150static 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 */
184static 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
201static 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);
233failed_preirq:
234	pcmcia_disable_device(link);
235	return -ENODEV;
236}
237
238#ifdef CONFIG_PM
239
240static 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
253static 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 */
274static 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};
279MODULE_DEVICE_TABLE(pcmcia, snd_pdacf_ids);
280
281static 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};
292module_pcmcia_driver(pdacf_cs_driver);
293