xref: /openbmc/linux/sound/isa/cs423x/cs4236.c (revision 17bfcd6a)
1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3  *  Driver for generic CS4232/CS4235/CS4236/CS4236B/CS4237B/CS4238B/CS4239 chips
4  *  Copyright (c) by Jaroslav Kysela <perex@perex.cz>
5  */
6 
7 #include <linux/init.h>
8 #include <linux/err.h>
9 #include <linux/isa.h>
10 #include <linux/pnp.h>
11 #include <linux/module.h>
12 #include <sound/core.h>
13 #include <sound/wss.h>
14 #include <sound/mpu401.h>
15 #include <sound/opl3.h>
16 #include <sound/initval.h>
17 
18 MODULE_AUTHOR("Jaroslav Kysela <perex@perex.cz>");
19 MODULE_LICENSE("GPL");
20 MODULE_DESCRIPTION("Cirrus Logic CS4232-9");
21 MODULE_ALIAS("snd_cs4232");
22 
23 #define IDENT "CS4232+"
24 #define DEV_NAME "cs4232+"
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_ISAPNP; /* Enable this card */
29 #ifdef CONFIG_PNP
30 static bool isapnp[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = 1};
31 #endif
32 static long port[SNDRV_CARDS] = SNDRV_DEFAULT_PORT;	/* PnP setup */
33 static long cport[SNDRV_CARDS] = SNDRV_DEFAULT_PORT;	/* PnP setup */
34 static long mpu_port[SNDRV_CARDS] = SNDRV_DEFAULT_PORT;/* PnP setup */
35 static long fm_port[SNDRV_CARDS] = SNDRV_DEFAULT_PORT;	/* PnP setup */
36 static long sb_port[SNDRV_CARDS] = SNDRV_DEFAULT_PORT;	/* PnP setup */
37 static int irq[SNDRV_CARDS] = SNDRV_DEFAULT_IRQ;	/* 5,7,9,11,12,15 */
38 static int mpu_irq[SNDRV_CARDS] = SNDRV_DEFAULT_IRQ;	/* 9,11,12,15 */
39 static int dma1[SNDRV_CARDS] = SNDRV_DEFAULT_DMA;	/* 0,1,3,5,6,7 */
40 static int dma2[SNDRV_CARDS] = SNDRV_DEFAULT_DMA;	/* 0,1,3,5,6,7 */
41 
42 module_param_array(index, int, NULL, 0444);
43 MODULE_PARM_DESC(index, "Index value for " IDENT " soundcard.");
44 module_param_array(id, charp, NULL, 0444);
45 MODULE_PARM_DESC(id, "ID string for " IDENT " soundcard.");
46 module_param_array(enable, bool, NULL, 0444);
47 MODULE_PARM_DESC(enable, "Enable " IDENT " soundcard.");
48 #ifdef CONFIG_PNP
49 module_param_array(isapnp, bool, NULL, 0444);
50 MODULE_PARM_DESC(isapnp, "ISA PnP detection for specified soundcard.");
51 #endif
52 module_param_hw_array(port, long, ioport, NULL, 0444);
53 MODULE_PARM_DESC(port, "Port # for " IDENT " driver.");
54 module_param_hw_array(cport, long, ioport, NULL, 0444);
55 MODULE_PARM_DESC(cport, "Control port # for " IDENT " driver.");
56 module_param_hw_array(mpu_port, long, ioport, NULL, 0444);
57 MODULE_PARM_DESC(mpu_port, "MPU-401 port # for " IDENT " driver.");
58 module_param_hw_array(fm_port, long, ioport, NULL, 0444);
59 MODULE_PARM_DESC(fm_port, "FM port # for " IDENT " driver.");
60 module_param_hw_array(sb_port, long, ioport, NULL, 0444);
61 MODULE_PARM_DESC(sb_port, "SB port # for " IDENT " driver (optional).");
62 module_param_hw_array(irq, int, irq, NULL, 0444);
63 MODULE_PARM_DESC(irq, "IRQ # for " IDENT " driver.");
64 module_param_hw_array(mpu_irq, int, irq, NULL, 0444);
65 MODULE_PARM_DESC(mpu_irq, "MPU-401 IRQ # for " IDENT " driver.");
66 module_param_hw_array(dma1, int, dma, NULL, 0444);
67 MODULE_PARM_DESC(dma1, "DMA1 # for " IDENT " driver.");
68 module_param_hw_array(dma2, int, dma, NULL, 0444);
69 MODULE_PARM_DESC(dma2, "DMA2 # for " IDENT " driver.");
70 
71 #ifdef CONFIG_PNP
72 static int isa_registered;
73 static int pnpc_registered;
74 static int pnp_registered;
75 #endif /* CONFIG_PNP */
76 
77 struct snd_card_cs4236 {
78 	struct snd_wss *chip;
79 #ifdef CONFIG_PNP
80 	struct pnp_dev *wss;
81 	struct pnp_dev *ctrl;
82 	struct pnp_dev *mpu;
83 #endif
84 };
85 
86 #ifdef CONFIG_PNP
87 
88 /*
89  * PNP BIOS
90  */
91 static const struct pnp_device_id snd_cs423x_pnpbiosids[] = {
92 	{ .id = "CSC0100" },
93 	{ .id = "CSC0000" },
94 	/* Guillemot Turtlebeach something appears to be cs4232 compatible
95 	 * (untested) */
96 	{ .id = "GIM0100" },
97 	{ .id = "" }
98 };
99 MODULE_DEVICE_TABLE(pnp, snd_cs423x_pnpbiosids);
100 
101 #define CS423X_ISAPNP_DRIVER	"cs4232_isapnp"
102 static const struct pnp_card_device_id snd_cs423x_pnpids[] = {
103 	/* Philips PCA70PS */
104 	{ .id = "CSC0d32", .devs = { { "CSC0000" }, { "CSC0010" }, { "PNPb006" } } },
105 	/* TerraTec Maestro 32/96 (CS4232) */
106 	{ .id = "CSC1a32", .devs = { { "CSC0000" }, { "CSC0010" }, { "CSC0003" } } },
107 	/* HP Omnibook 5500 onboard */
108 	{ .id = "CSC4232", .devs = { { "CSC0000" }, { "CSC0002" }, { "CSC0003" } } },
109 	/* Unnamed CS4236 card (Made in Taiwan) */
110 	{ .id = "CSC4236", .devs = { { "CSC0000" }, { "CSC0010" }, { "CSC0003" } } },
111 	/* Turtle Beach TBS-2000 (CS4232) */
112 	{ .id = "CSC7532", .devs = { { "CSC0000" }, { "CSC0010" }, { "CSCb006" } } },
113 	/* Turtle Beach Tropez Plus (CS4232) */
114 	{ .id = "CSC7632", .devs = { { "CSC0000" }, { "CSC0010" }, { "PNPb006" } } },
115 	/* SIC CrystalWave 32 (CS4232) */
116 	{ .id = "CSCf032", .devs = { { "CSC0000" }, { "CSC0010" }, { "CSC0003" } } },
117 	/* Netfinity 3000 on-board soundcard */
118 	{ .id = "CSCe825", .devs = { { "CSC0100" }, { "CSC0110" }, { "CSC010f" } } },
119 	/* Intel Marlin Spike Motherboard - CS4235 */
120 	{ .id = "CSC0225", .devs = { { "CSC0000" }, { "CSC0010" }, { "CSC0003" } } },
121 	/* Intel Marlin Spike Motherboard (#2) - CS4235 */
122 	{ .id = "CSC0225", .devs = { { "CSC0100" }, { "CSC0110" }, { "CSC0103" } } },
123 	/* Unknown Intel mainboard - CS4235 */
124 	{ .id = "CSC0225", .devs = { { "CSC0100" }, { "CSC0110" } } },
125 	/* Genius Sound Maker 3DJ - CS4237B */
126 	{ .id = "CSC0437", .devs = { { "CSC0000" }, { "CSC0010" }, { "CSC0003" } } },
127 	/* Digital PC 5000 Onboard - CS4236B */
128 	{ .id = "CSC0735", .devs = { { "CSC0000" }, { "CSC0010" } } },
129 	/* some unknown CS4236B */
130 	{ .id = "CSC0b35", .devs = { { "CSC0000" }, { "CSC0010" }, { "CSC0003" } } },
131 	/* Intel PR440FX Onboard sound */
132 	{ .id = "CSC0b36", .devs = { { "CSC0000" }, { "CSC0010" }, { "CSC0003" } } },
133 	/* CS4235 on mainboard without MPU */
134 	{ .id = "CSC1425", .devs = { { "CSC0100" }, { "CSC0110" } } },
135 	/* Gateway E1000 Onboard CS4236B */
136 	{ .id = "CSC1335", .devs = { { "CSC0000" }, { "CSC0010" }, { "CSC0003" } } },
137 	/* HP 6330 Onboard sound */
138 	{ .id = "CSC1525", .devs = { { "CSC0100" }, { "CSC0110" }, { "CSC0103" } } },
139 	/* Crystal Computer TidalWave128 */
140 	{ .id = "CSC1e37", .devs = { { "CSC0000" }, { "CSC0010" }, { "CSC0003" } } },
141 	/* ACER AW37 - CS4235 */
142 	{ .id = "CSC4236", .devs = { { "CSC0000" }, { "CSC0010" }, { "CSC0003" } } },
143 	/* build-in soundcard in EliteGroup P5TX-LA motherboard - CS4237B */
144 	{ .id = "CSC4237", .devs = { { "CSC0000" }, { "CSC0010" }, { "CSC0003" } } },
145 	/* Crystal 3D - CS4237B */
146 	{ .id = "CSC4336", .devs = { { "CSC0000" }, { "CSC0010" }, { "CSC0003" } } },
147 	/* Typhoon Soundsystem PnP - CS4236B */
148 	{ .id = "CSC4536", .devs = { { "CSC0000" }, { "CSC0010" }, { "CSC0003" } } },
149 	/* Crystal CX4235-XQ3 EP - CS4235 */
150 	{ .id = "CSC4625", .devs = { { "CSC0100" }, { "CSC0110" }, { "CSC0103" } } },
151 	/* Crystal Semiconductors CS4237B */
152 	{ .id = "CSC4637", .devs = { { "CSC0000" }, { "CSC0010" }, { "CSC0003" } } },
153 	/* NewClear 3D - CX4237B-XQ3 */
154 	{ .id = "CSC4837", .devs = { { "CSC0000" }, { "CSC0010" }, { "CSC0003" } } },
155 	/* Dell Optiplex GX1 - CS4236B */
156 	{ .id = "CSC6835", .devs = { { "CSC0000" }, { "CSC0010" }, { "CSC0003" } } },
157 	/* Dell P410 motherboard - CS4236B */
158 	{ .id = "CSC6835", .devs = { { "CSC0000" }, { "CSC0010" } } },
159 	/* Dell Workstation 400 Onboard - CS4236B */
160 	{ .id = "CSC6836", .devs = { { "CSC0000" }, { "CSC0010" }, { "CSC0003" } } },
161 	/* Turtle Beach Malibu - CS4237B */
162 	{ .id = "CSC7537", .devs = { { "CSC0000" }, { "CSC0010" }, { "CSC0003" } } },
163 	/* CS4235 - onboard */
164 	{ .id = "CSC8025", .devs = { { "CSC0100" }, { "CSC0110" }, { "CSC0103" } } },
165 	/* IBM Aptiva 2137 E24 Onboard - CS4237B */
166 	{ .id = "CSC8037", .devs = { { "CSC0000" }, { "CSC0010" }, { "CSC0003" } } },
167 	/* IBM IntelliStation M Pro motherboard */
168 	{ .id = "CSCc835", .devs = { { "CSC0000" }, { "CSC0010" } } },
169 	/* Guillemot MaxiSound 16 PnP - CS4236B */
170 	{ .id = "CSC9836", .devs = { { "CSC0000" }, { "CSC0010" }, { "CSC0003" } } },
171 	/* Gallant SC-70P */
172 	{ .id = "CSC9837", .devs = { { "CSC0000" }, { "CSC0010" }, { "CSC0003" } } },
173 	/* Techmakers MF-4236PW */
174 	{ .id = "CSCa736", .devs = { { "CSC0000" }, { "CSC0010" }, { "CSC0003" } } },
175 	/* TerraTec AudioSystem EWS64XL - CS4236B */
176 	{ .id = "CSCa836", .devs = { { "CSCa800" }, { "CSCa810" }, { "CSCa803" } } },
177 	/* TerraTec AudioSystem EWS64XL - CS4236B */
178 	{ .id = "CSCa836", .devs = { { "CSCa800" }, { "CSCa810" } } },
179 	/* ACER AW37/Pro - CS4235 */
180 	{ .id = "CSCd925", .devs = { { "CSC0000" }, { "CSC0010" }, { "CSC0003" } } },
181 	/* ACER AW35/Pro - CS4237B */
182 	{ .id = "CSCd937", .devs = { { "CSC0000" }, { "CSC0010" }, { "CSC0003" } } },
183 	/* CS4235 without MPU401 */
184 	{ .id = "CSCe825", .devs = { { "CSC0100" }, { "CSC0110" } } },
185 	/* Unknown SiS530 - CS4235 */
186 	{ .id = "CSC4825", .devs = { { "CSC0100" }, { "CSC0110" } } },
187 	/* IBM IntelliStation M Pro 6898 11U - CS4236B */
188 	{ .id = "CSCe835", .devs = { { "CSC0000" }, { "CSC0010" } } },
189 	/* IBM PC 300PL Onboard - CS4236B */
190 	{ .id = "CSCe836", .devs = { { "CSC0000" }, { "CSC0010" } } },
191 	/* Some noname CS4236 based card */
192 	{ .id = "CSCe936", .devs = { { "CSC0000" }, { "CSC0010" }, { "CSC0003" } } },
193 	/* CS4236B */
194 	{ .id = "CSCf235", .devs = { { "CSC0000" }, { "CSC0010" }, { "CSC0003" } } },
195 	/* CS4236B */
196 	{ .id = "CSCf238", .devs = { { "CSC0000" }, { "CSC0010" }, { "CSC0003" } } },
197 	/* --- */
198 	{ .id = "" }	/* end */
199 };
200 
201 MODULE_DEVICE_TABLE(pnp_card, snd_cs423x_pnpids);
202 
203 /* WSS initialization */
204 static int snd_cs423x_pnp_init_wss(int dev, struct pnp_dev *pdev)
205 {
206 	if (pnp_activate_dev(pdev) < 0) {
207 		printk(KERN_ERR IDENT " WSS PnP configure failed for WSS (out of resources?)\n");
208 		return -EBUSY;
209 	}
210 	port[dev] = pnp_port_start(pdev, 0);
211 	if (fm_port[dev] > 0)
212 		fm_port[dev] = pnp_port_start(pdev, 1);
213 	sb_port[dev] = pnp_port_start(pdev, 2);
214 	irq[dev] = pnp_irq(pdev, 0);
215 	dma1[dev] = pnp_dma(pdev, 0);
216 	dma2[dev] = pnp_dma(pdev, 1) == 4 ? -1 : (int)pnp_dma(pdev, 1);
217 	snd_printdd("isapnp WSS: wss port=0x%lx, fm port=0x%lx, sb port=0x%lx\n",
218 			port[dev], fm_port[dev], sb_port[dev]);
219 	snd_printdd("isapnp WSS: irq=%i, dma1=%i, dma2=%i\n",
220 			irq[dev], dma1[dev], dma2[dev]);
221 	return 0;
222 }
223 
224 /* CTRL initialization */
225 static int snd_cs423x_pnp_init_ctrl(int dev, struct pnp_dev *pdev)
226 {
227 	if (pnp_activate_dev(pdev) < 0) {
228 		printk(KERN_ERR IDENT " CTRL PnP configure failed for WSS (out of resources?)\n");
229 		return -EBUSY;
230 	}
231 	cport[dev] = pnp_port_start(pdev, 0);
232 	snd_printdd("isapnp CTRL: control port=0x%lx\n", cport[dev]);
233 	return 0;
234 }
235 
236 /* MPU initialization */
237 static int snd_cs423x_pnp_init_mpu(int dev, struct pnp_dev *pdev)
238 {
239 	if (pnp_activate_dev(pdev) < 0) {
240 		printk(KERN_ERR IDENT " MPU401 PnP configure failed for WSS (out of resources?)\n");
241 		mpu_port[dev] = SNDRV_AUTO_PORT;
242 		mpu_irq[dev] = SNDRV_AUTO_IRQ;
243 	} else {
244 		mpu_port[dev] = pnp_port_start(pdev, 0);
245 		if (mpu_irq[dev] >= 0 &&
246 		    pnp_irq_valid(pdev, 0) &&
247 		    pnp_irq(pdev, 0) != (resource_size_t)-1) {
248 			mpu_irq[dev] = pnp_irq(pdev, 0);
249 		} else {
250 			mpu_irq[dev] = -1;	/* disable interrupt */
251 		}
252 	}
253 	snd_printdd("isapnp MPU: port=0x%lx, irq=%i\n", mpu_port[dev], mpu_irq[dev]);
254 	return 0;
255 }
256 
257 static int snd_card_cs423x_pnp(int dev, struct snd_card_cs4236 *acard,
258 			       struct pnp_dev *pdev,
259 			       struct pnp_dev *cdev)
260 {
261 	acard->wss = pdev;
262 	if (snd_cs423x_pnp_init_wss(dev, acard->wss) < 0)
263 		return -EBUSY;
264 	if (cdev)
265 		cport[dev] = pnp_port_start(cdev, 0);
266 	else
267 		cport[dev] = -1;
268 	return 0;
269 }
270 
271 static int snd_card_cs423x_pnpc(int dev, struct snd_card_cs4236 *acard,
272 				struct pnp_card_link *card,
273 				const struct pnp_card_device_id *id)
274 {
275 	acard->wss = pnp_request_card_device(card, id->devs[0].id, NULL);
276 	if (acard->wss == NULL)
277 		return -EBUSY;
278 	acard->ctrl = pnp_request_card_device(card, id->devs[1].id, NULL);
279 	if (acard->ctrl == NULL)
280 		return -EBUSY;
281 	if (id->devs[2].id[0]) {
282 		acard->mpu = pnp_request_card_device(card, id->devs[2].id, NULL);
283 		if (acard->mpu == NULL)
284 			return -EBUSY;
285 	}
286 
287 	/* WSS initialization */
288 	if (snd_cs423x_pnp_init_wss(dev, acard->wss) < 0)
289 		return -EBUSY;
290 
291 	/* CTRL initialization */
292 	if (acard->ctrl && cport[dev] > 0) {
293 		if (snd_cs423x_pnp_init_ctrl(dev, acard->ctrl) < 0)
294 			return -EBUSY;
295 	}
296 	/* MPU initialization */
297 	if (acard->mpu && mpu_port[dev] > 0) {
298 		if (snd_cs423x_pnp_init_mpu(dev, acard->mpu) < 0)
299 			return -EBUSY;
300 	}
301 	return 0;
302 }
303 #endif /* CONFIG_PNP */
304 
305 #ifdef CONFIG_PNP
306 #define is_isapnp_selected(dev)		isapnp[dev]
307 #else
308 #define is_isapnp_selected(dev)		0
309 #endif
310 
311 static int snd_cs423x_card_new(struct device *pdev, int dev,
312 			       struct snd_card **cardp)
313 {
314 	struct snd_card *card;
315 	int err;
316 
317 	err = snd_devm_card_new(pdev, index[dev], id[dev], THIS_MODULE,
318 				sizeof(struct snd_card_cs4236), &card);
319 	if (err < 0)
320 		return err;
321 	*cardp = card;
322 	return 0;
323 }
324 
325 static int snd_cs423x_probe(struct snd_card *card, int dev)
326 {
327 	struct snd_card_cs4236 *acard;
328 	struct snd_wss *chip;
329 	struct snd_opl3 *opl3;
330 	int err;
331 
332 	acard = card->private_data;
333 	if (sb_port[dev] > 0 && sb_port[dev] != SNDRV_AUTO_PORT) {
334 		if (!devm_request_region(card->dev, sb_port[dev], 16,
335 					 IDENT " SB")) {
336 			printk(KERN_ERR IDENT ": unable to register SB port at 0x%lx\n", sb_port[dev]);
337 			return -EBUSY;
338 		}
339 	}
340 
341 	err = snd_cs4236_create(card, port[dev], cport[dev],
342 			     irq[dev],
343 			     dma1[dev], dma2[dev],
344 			     WSS_HW_DETECT3, 0, &chip);
345 	if (err < 0)
346 		return err;
347 
348 	acard->chip = chip;
349 	if (chip->hardware & WSS_HW_CS4236B_MASK) {
350 
351 		err = snd_cs4236_pcm(chip, 0);
352 		if (err < 0)
353 			return err;
354 
355 		err = snd_cs4236_mixer(chip);
356 		if (err < 0)
357 			return err;
358 	} else {
359 		err = snd_wss_pcm(chip, 0);
360 		if (err < 0)
361 			return err;
362 
363 		err = snd_wss_mixer(chip);
364 		if (err < 0)
365 			return err;
366 	}
367 	strscpy(card->driver, chip->pcm->name, sizeof(card->driver));
368 	strscpy(card->shortname, chip->pcm->name, sizeof(card->shortname));
369 	if (dma2[dev] < 0)
370 		scnprintf(card->longname, sizeof(card->longname),
371 			  "%s at 0x%lx, irq %i, dma %i",
372 			  chip->pcm->name, chip->port, irq[dev], dma1[dev]);
373 	else
374 		scnprintf(card->longname, sizeof(card->longname),
375 			  "%s at 0x%lx, irq %i, dma %i&%d",
376 			  chip->pcm->name, chip->port, irq[dev], dma1[dev],
377 			  dma2[dev]);
378 
379 	err = snd_wss_timer(chip, 0);
380 	if (err < 0)
381 		return err;
382 
383 	if (fm_port[dev] > 0 && fm_port[dev] != SNDRV_AUTO_PORT) {
384 		if (snd_opl3_create(card,
385 				    fm_port[dev], fm_port[dev] + 2,
386 				    OPL3_HW_OPL3_CS, 0, &opl3) < 0) {
387 			printk(KERN_WARNING IDENT ": OPL3 not detected\n");
388 		} else {
389 			err = snd_opl3_hwdep_new(opl3, 0, 1, NULL);
390 			if (err < 0)
391 				return err;
392 		}
393 	}
394 
395 	if (mpu_port[dev] > 0 && mpu_port[dev] != SNDRV_AUTO_PORT) {
396 		if (mpu_irq[dev] == SNDRV_AUTO_IRQ)
397 			mpu_irq[dev] = -1;
398 		if (snd_mpu401_uart_new(card, 0, MPU401_HW_CS4232,
399 					mpu_port[dev], 0,
400 					mpu_irq[dev], NULL) < 0)
401 			printk(KERN_WARNING IDENT ": MPU401 not detected\n");
402 	}
403 
404 	return snd_card_register(card);
405 }
406 
407 static int snd_cs423x_isa_match(struct device *pdev,
408 				unsigned int dev)
409 {
410 	if (!enable[dev] || is_isapnp_selected(dev))
411 		return 0;
412 
413 	if (port[dev] == SNDRV_AUTO_PORT) {
414 		dev_err(pdev, "please specify port\n");
415 		return 0;
416 	}
417 	if (cport[dev] == SNDRV_AUTO_PORT) {
418 		dev_err(pdev, "please specify cport\n");
419 		return 0;
420 	}
421 	if (irq[dev] == SNDRV_AUTO_IRQ) {
422 		dev_err(pdev, "please specify irq\n");
423 		return 0;
424 	}
425 	if (dma1[dev] == SNDRV_AUTO_DMA) {
426 		dev_err(pdev, "please specify dma1\n");
427 		return 0;
428 	}
429 	return 1;
430 }
431 
432 static int snd_cs423x_isa_probe(struct device *pdev,
433 				unsigned int dev)
434 {
435 	struct snd_card *card;
436 	int err;
437 
438 	err = snd_cs423x_card_new(pdev, dev, &card);
439 	if (err < 0)
440 		return err;
441 	err = snd_cs423x_probe(card, dev);
442 	if (err < 0)
443 		return err;
444 	dev_set_drvdata(pdev, card);
445 	return 0;
446 }
447 
448 #ifdef CONFIG_PM
449 static int snd_cs423x_suspend(struct snd_card *card)
450 {
451 	struct snd_card_cs4236 *acard = card->private_data;
452 	snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);
453 	acard->chip->suspend(acard->chip);
454 	return 0;
455 }
456 
457 static int snd_cs423x_resume(struct snd_card *card)
458 {
459 	struct snd_card_cs4236 *acard = card->private_data;
460 	acard->chip->resume(acard->chip);
461 	snd_power_change_state(card, SNDRV_CTL_POWER_D0);
462 	return 0;
463 }
464 
465 static int snd_cs423x_isa_suspend(struct device *dev, unsigned int n,
466 				  pm_message_t state)
467 {
468 	return snd_cs423x_suspend(dev_get_drvdata(dev));
469 }
470 
471 static int snd_cs423x_isa_resume(struct device *dev, unsigned int n)
472 {
473 	return snd_cs423x_resume(dev_get_drvdata(dev));
474 }
475 #endif
476 
477 static struct isa_driver cs423x_isa_driver = {
478 	.match		= snd_cs423x_isa_match,
479 	.probe		= snd_cs423x_isa_probe,
480 #ifdef CONFIG_PM
481 	.suspend	= snd_cs423x_isa_suspend,
482 	.resume		= snd_cs423x_isa_resume,
483 #endif
484 	.driver		= {
485 		.name	= DEV_NAME
486 	},
487 };
488 
489 
490 #ifdef CONFIG_PNP
491 static int snd_cs423x_pnpbios_detect(struct pnp_dev *pdev,
492 				     const struct pnp_device_id *id)
493 {
494 	static int dev;
495 	int err;
496 	struct snd_card *card;
497 	struct pnp_dev *cdev, *iter;
498 	char cid[PNP_ID_LEN];
499 
500 	if (pnp_device_is_isapnp(pdev))
501 		return -ENOENT;	/* we have another procedure - card */
502 	for (; dev < SNDRV_CARDS; dev++) {
503 		if (enable[dev] && isapnp[dev])
504 			break;
505 	}
506 	if (dev >= SNDRV_CARDS)
507 		return -ENODEV;
508 
509 	/* prepare second id */
510 	strcpy(cid, pdev->id[0].id);
511 	cid[5] = '1';
512 	cdev = NULL;
513 	list_for_each_entry(iter, &(pdev->protocol->devices), protocol_list) {
514 		if (!strcmp(iter->id[0].id, cid)) {
515 			cdev = iter;
516 			break;
517 		}
518 	}
519 	err = snd_cs423x_card_new(&pdev->dev, dev, &card);
520 	if (err < 0)
521 		return err;
522 	err = snd_card_cs423x_pnp(dev, card->private_data, pdev, cdev);
523 	if (err < 0) {
524 		printk(KERN_ERR "PnP BIOS detection failed for " IDENT "\n");
525 		return err;
526 	}
527 	err = snd_cs423x_probe(card, dev);
528 	if (err < 0)
529 		return err;
530 	pnp_set_drvdata(pdev, card);
531 	dev++;
532 	return 0;
533 }
534 
535 #ifdef CONFIG_PM
536 static int snd_cs423x_pnp_suspend(struct pnp_dev *pdev, pm_message_t state)
537 {
538 	return snd_cs423x_suspend(pnp_get_drvdata(pdev));
539 }
540 
541 static int snd_cs423x_pnp_resume(struct pnp_dev *pdev)
542 {
543 	return snd_cs423x_resume(pnp_get_drvdata(pdev));
544 }
545 #endif
546 
547 static struct pnp_driver cs423x_pnp_driver = {
548 	.name = "cs423x-pnpbios",
549 	.id_table = snd_cs423x_pnpbiosids,
550 	.probe = snd_cs423x_pnpbios_detect,
551 #ifdef CONFIG_PM
552 	.suspend	= snd_cs423x_pnp_suspend,
553 	.resume		= snd_cs423x_pnp_resume,
554 #endif
555 };
556 
557 static int snd_cs423x_pnpc_detect(struct pnp_card_link *pcard,
558 				  const struct pnp_card_device_id *pid)
559 {
560 	static int dev;
561 	struct snd_card *card;
562 	int res;
563 
564 	for ( ; dev < SNDRV_CARDS; dev++) {
565 		if (enable[dev] && isapnp[dev])
566 			break;
567 	}
568 	if (dev >= SNDRV_CARDS)
569 		return -ENODEV;
570 
571 	res = snd_cs423x_card_new(&pcard->card->dev, dev, &card);
572 	if (res < 0)
573 		return res;
574 	res = snd_card_cs423x_pnpc(dev, card->private_data, pcard, pid);
575 	if (res < 0) {
576 		printk(KERN_ERR "isapnp detection failed and probing for " IDENT
577 		       " is not supported\n");
578 		return res;
579 	}
580 	res = snd_cs423x_probe(card, dev);
581 	if (res < 0)
582 		return res;
583 	pnp_set_card_drvdata(pcard, card);
584 	dev++;
585 	return 0;
586 }
587 
588 #ifdef CONFIG_PM
589 static int snd_cs423x_pnpc_suspend(struct pnp_card_link *pcard, pm_message_t state)
590 {
591 	return snd_cs423x_suspend(pnp_get_card_drvdata(pcard));
592 }
593 
594 static int snd_cs423x_pnpc_resume(struct pnp_card_link *pcard)
595 {
596 	return snd_cs423x_resume(pnp_get_card_drvdata(pcard));
597 }
598 #endif
599 
600 static struct pnp_card_driver cs423x_pnpc_driver = {
601 	.flags = PNP_DRIVER_RES_DISABLE,
602 	.name = CS423X_ISAPNP_DRIVER,
603 	.id_table = snd_cs423x_pnpids,
604 	.probe = snd_cs423x_pnpc_detect,
605 #ifdef CONFIG_PM
606 	.suspend	= snd_cs423x_pnpc_suspend,
607 	.resume		= snd_cs423x_pnpc_resume,
608 #endif
609 };
610 #endif /* CONFIG_PNP */
611 
612 static int __init alsa_card_cs423x_init(void)
613 {
614 	int err;
615 
616 	err = isa_register_driver(&cs423x_isa_driver, SNDRV_CARDS);
617 #ifdef CONFIG_PNP
618 	if (!err)
619 		isa_registered = 1;
620 	err = pnp_register_driver(&cs423x_pnp_driver);
621 	if (!err)
622 		pnp_registered = 1;
623 	err = pnp_register_card_driver(&cs423x_pnpc_driver);
624 	if (!err)
625 		pnpc_registered = 1;
626 	if (pnp_registered)
627 		err = 0;
628 	if (isa_registered)
629 		err = 0;
630 #endif
631 	return err;
632 }
633 
634 static void __exit alsa_card_cs423x_exit(void)
635 {
636 #ifdef CONFIG_PNP
637 	if (pnpc_registered)
638 		pnp_unregister_card_driver(&cs423x_pnpc_driver);
639 	if (pnp_registered)
640 		pnp_unregister_driver(&cs423x_pnp_driver);
641 	if (isa_registered)
642 #endif
643 		isa_unregister_driver(&cs423x_isa_driver);
644 }
645 
646 module_init(alsa_card_cs423x_init)
647 module_exit(alsa_card_cs423x_exit)
648