[ALSA] unregister platform devices
[linux-2.6.git] / sound / isa / gus / gusclassic.c
1 /*
2  *  Driver for Gravis UltraSound Classic soundcard
3  *  Copyright (c) by Jaroslav Kysela <perex@suse.cz>
4  *
5  *
6  *   This program is free software; you can redistribute it and/or modify
7  *   it under the terms of the GNU General Public License as published by
8  *   the Free Software Foundation; either version 2 of the License, or
9  *   (at your option) any later version.
10  *
11  *   This program is distributed in the hope that it will be useful,
12  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
13  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
14  *   GNU General Public License for more details.
15  *
16  *   You should have received a copy of the GNU General Public License
17  *   along with this program; if not, write to the Free Software
18  *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
19  *
20  */
21
22 #include <sound/driver.h>
23 #include <linux/init.h>
24 #include <linux/err.h>
25 #include <linux/platform_device.h>
26 #include <linux/delay.h>
27 #include <linux/time.h>
28 #include <linux/moduleparam.h>
29 #include <asm/dma.h>
30 #include <sound/core.h>
31 #include <sound/gus.h>
32 #define SNDRV_LEGACY_FIND_FREE_IRQ
33 #define SNDRV_LEGACY_FIND_FREE_DMA
34 #include <sound/initval.h>
35
36 MODULE_AUTHOR("Jaroslav Kysela <perex@suse.cz>");
37 MODULE_DESCRIPTION("Gravis UltraSound Classic");
38 MODULE_LICENSE("GPL");
39 MODULE_SUPPORTED_DEVICE("{{Gravis,UltraSound Classic}}");
40
41 static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;      /* Index 0-MAX */
42 static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;       /* ID for this card */
43 static int enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE;  /* Enable this card */
44 static long port[SNDRV_CARDS] = SNDRV_DEFAULT_PORT;     /* 0x220,0x230,0x240,0x250,0x260 */
45 static int irq[SNDRV_CARDS] = SNDRV_DEFAULT_IRQ;        /* 3,5,9,11,12,15 */
46 static int dma1[SNDRV_CARDS] = SNDRV_DEFAULT_DMA;       /* 1,3,5,6,7 */
47 static int dma2[SNDRV_CARDS] = SNDRV_DEFAULT_DMA;       /* 1,3,5,6,7 */
48 static int joystick_dac[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = 29};
49                                 /* 0 to 31, (0.59V-4.52V or 0.389V-2.98V) */
50 static int channels[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = 24};
51 static int pcm_channels[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = 2};
52
53 module_param_array(index, int, NULL, 0444);
54 MODULE_PARM_DESC(index, "Index value for GUS Classic soundcard.");
55 module_param_array(id, charp, NULL, 0444);
56 MODULE_PARM_DESC(id, "ID string for GUS Classic soundcard.");
57 module_param_array(enable, bool, NULL, 0444);
58 MODULE_PARM_DESC(enable, "Enable GUS Classic soundcard.");
59 module_param_array(port, long, NULL, 0444);
60 MODULE_PARM_DESC(port, "Port # for GUS Classic driver.");
61 module_param_array(irq, int, NULL, 0444);
62 MODULE_PARM_DESC(irq, "IRQ # for GUS Classic driver.");
63 module_param_array(dma1, int, NULL, 0444);
64 MODULE_PARM_DESC(dma1, "DMA1 # for GUS Classic driver.");
65 module_param_array(dma2, int, NULL, 0444);
66 MODULE_PARM_DESC(dma2, "DMA2 # for GUS Classic driver.");
67 module_param_array(joystick_dac, int, NULL, 0444);
68 MODULE_PARM_DESC(joystick_dac, "Joystick DAC level 0.59V-4.52V or 0.389V-2.98V for GUS Classic driver.");
69 module_param_array(channels, int, NULL, 0444);
70 MODULE_PARM_DESC(channels, "GF1 channels for GUS Classic driver.");
71 module_param_array(pcm_channels, int, NULL, 0444);
72 MODULE_PARM_DESC(pcm_channels, "Reserved PCM channels for GUS Classic driver.");
73
74 static struct platform_device *devices[SNDRV_CARDS];
75
76
77 #define PFX     "gusclassic: "
78
79 static int __init snd_gusclassic_detect(struct snd_gus_card * gus)
80 {
81         unsigned char d;
82
83         snd_gf1_i_write8(gus, SNDRV_GF1_GB_RESET, 0);   /* reset GF1 */
84         if (((d = snd_gf1_i_look8(gus, SNDRV_GF1_GB_RESET)) & 0x07) != 0) {
85                 snd_printdd("[0x%lx] check 1 failed - 0x%x\n", gus->gf1.port, d);
86                 return -ENODEV;
87         }
88         udelay(160);
89         snd_gf1_i_write8(gus, SNDRV_GF1_GB_RESET, 1);   /* release reset */
90         udelay(160);
91         if (((d = snd_gf1_i_look8(gus, SNDRV_GF1_GB_RESET)) & 0x07) != 1) {
92                 snd_printdd("[0x%lx] check 2 failed - 0x%x\n", gus->gf1.port, d);
93                 return -ENODEV;
94         }
95         return 0;
96 }
97
98 static void __init snd_gusclassic_init(int dev, struct snd_gus_card * gus)
99 {
100         gus->equal_irq = 0;
101         gus->codec_flag = 0;
102         gus->max_flag = 0;
103         gus->joystick_dac = joystick_dac[dev];
104 }
105
106 static int __init snd_gusclassic_probe(struct platform_device *pdev)
107 {
108         int dev = pdev->id;
109         static int possible_irqs[] = {5, 11, 12, 9, 7, 15, 3, 4, -1};
110         static int possible_dmas[] = {5, 6, 7, 1, 3, -1};
111         int xirq, xdma1, xdma2;
112         struct snd_card *card;
113         struct snd_gus_card *gus = NULL;
114         int err;
115
116         card = snd_card_new(index[dev], id[dev], THIS_MODULE, 0);
117         if (card == NULL)
118                 return -ENOMEM;
119         if (pcm_channels[dev] < 2)
120                 pcm_channels[dev] = 2;
121
122         xirq = irq[dev];
123         if (xirq == SNDRV_AUTO_IRQ) {
124                 if ((xirq = snd_legacy_find_free_irq(possible_irqs)) < 0) {
125                         snd_printk(KERN_ERR PFX "unable to find a free IRQ\n");
126                         err = -EBUSY;
127                         goto _err;
128                 }
129         }
130         xdma1 = dma1[dev];
131         if (xdma1 == SNDRV_AUTO_DMA) {
132                 if ((xdma1 = snd_legacy_find_free_dma(possible_dmas)) < 0) {
133                         snd_printk(KERN_ERR PFX "unable to find a free DMA1\n");
134                         err = -EBUSY;
135                         goto _err;
136                 }
137         }
138         xdma2 = dma2[dev];
139         if (xdma2 == SNDRV_AUTO_DMA) {
140                 if ((xdma2 = snd_legacy_find_free_dma(possible_dmas)) < 0) {
141                         snd_printk(KERN_ERR PFX "unable to find a free DMA2\n");
142                         err = -EBUSY;
143                         goto _err;
144                 }
145         }
146
147         if (port[dev] != SNDRV_AUTO_PORT) {
148                 err = snd_gus_create(card,
149                                      port[dev],
150                                      xirq, xdma1, xdma2,
151                                      0, channels[dev], pcm_channels[dev],
152                                      0, &gus);
153         } else {
154                 /* auto-probe legacy ports */
155                 static unsigned long possible_ports[] = {
156                         0x220, 0x230, 0x240, 0x250, 0x260,
157                 };
158                 int i;
159                 for (i = 0; i < ARRAY_SIZE(possible_ports); i++) {
160                         err = snd_gus_create(card,
161                                              possible_ports[i],
162                                              xirq, xdma1, xdma2,
163                                              0, channels[dev], pcm_channels[dev],
164                                              0, &gus);
165                         if (err >= 0) {
166                                 port[dev] = possible_ports[i];
167                                 break;
168                         }
169                 }
170         }
171         if (err < 0)
172                 goto _err;
173
174         if ((err = snd_gusclassic_detect(gus)) < 0)
175                 goto _err;
176
177         snd_gusclassic_init(dev, gus);
178         if ((err = snd_gus_initialize(gus)) < 0)
179                 goto _err;
180
181         if (gus->max_flag || gus->ess_flag) {
182                 snd_printk(KERN_ERR PFX "GUS Classic or ACE soundcard was not detected at 0x%lx\n", gus->gf1.port);
183                 err = -ENODEV;
184                 goto _err;
185         }
186
187         if ((err = snd_gf1_new_mixer(gus)) < 0)
188                 goto _err;
189
190         if ((err = snd_gf1_pcm_new(gus, 0, 0, NULL)) < 0)
191                 goto _err;
192
193         if (!gus->ace_flag) {
194                 if ((err = snd_gf1_rawmidi_new(gus, 0, NULL)) < 0)
195                         goto _err;
196         }
197         sprintf(card->longname + strlen(card->longname), " at 0x%lx, irq %d, dma %d", gus->gf1.port, xirq, xdma1);
198         if (dma2 >= 0)
199                 sprintf(card->longname + strlen(card->longname), "&%d", xdma2);
200
201         snd_card_set_dev(card, &pdev->dev);
202
203         if ((err = snd_card_register(card)) < 0)
204                 goto _err;
205
206         platform_set_drvdata(pdev, card);
207         return 0;
208
209  _err:
210         snd_card_free(card);
211         return err;
212 }
213
214 static int snd_gusclassic_remove(struct platform_device *devptr)
215 {
216         snd_card_free(platform_get_drvdata(devptr));
217         platform_set_drvdata(devptr, NULL);
218         return 0;
219 }
220
221 #define GUSCLASSIC_DRIVER       "snd_gusclassic"
222
223 static struct platform_driver snd_gusclassic_driver = {
224         .probe          = snd_gusclassic_probe,
225         .remove         = snd_gusclassic_remove,
226         /* FIXME: suspend/resume */
227         .driver         = {
228                 .name   = GUSCLASSIC_DRIVER
229         },
230 };
231
232 static void __init_or_module snd_gusclassic_unregister_all(void)
233 {
234         int i;
235
236         for (i = 0; i < ARRAY_SIZE(devices); ++i)
237                 platform_device_unregister(devices[i]);
238         platform_driver_unregister(&snd_gusclassic_driver);
239 }
240
241 static int __init alsa_card_gusclassic_init(void)
242 {
243         int i, cards, err;
244
245         err = platform_driver_register(&snd_gusclassic_driver);
246         if (err < 0)
247                 return err;
248
249         cards = 0;
250         for (i = 0; i < SNDRV_CARDS && enable[i]; i++) {
251                 struct platform_device *device;
252                 device = platform_device_register_simple(GUSCLASSIC_DRIVER,
253                                                          i, NULL, 0);
254                 if (IS_ERR(device)) {
255                         err = PTR_ERR(device);
256                         goto errout;
257                 }
258                 devices[i] = device;
259                 cards++;
260         }
261         if (!cards) {
262 #ifdef MODULE
263                 printk(KERN_ERR "GUS Classic soundcard not found or device busy\n");
264 #endif
265                 err = -ENODEV;
266                 goto errout;
267         }
268         return 0;
269
270  errout:
271         snd_gusclassic_unregister_all();
272         return err;
273 }
274
275 static void __exit alsa_card_gusclassic_exit(void)
276 {
277         snd_gusclassic_unregister_all();
278 }
279
280 module_init(alsa_card_gusclassic_init)
281 module_exit(alsa_card_gusclassic_exit)