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  • Committer: Bazaar Package Importer
  • Author(s): Amit Kucheria, Amit Kucheria
  • Date: 2010-03-10 02:28:15 UTC
  • Revision ID: james.westby@ubuntu.com-20100310022815-7sd3gwvn5kenaq33
Tags: 2.6.33-500.1
[ Amit Kucheria ]

* Initial release of a 2.6.33-based OMAP kernel
* UBUNTU: [Upstream] Fix omap 1-wire driver compilation
* UBUNTU: ubuntu: AppArmor -- update to mainline 2010-03-04

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sound/isa/sb/sb_common.c
 
1
/*
 
2
 *  Copyright (c) by Jaroslav Kysela <perex@perex.cz>
 
3
 *                   Uros Bizjak <uros@kss-loka.si>
 
4
 *
 
5
 *  Lowlevel routines for control of Sound Blaster cards
 
6
 *
 
7
 *   This program is free software; you can redistribute it and/or modify
 
8
 *   it under the terms of the GNU General Public License as published by
 
9
 *   the Free Software Foundation; either version 2 of the License, or
 
10
 *   (at your option) any later version.
 
11
 *
 
12
 *   This program is distributed in the hope that it will be useful,
 
13
 *   but WITHOUT ANY WARRANTY; without even the implied warranty of
 
14
 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 
15
 *   GNU General Public License for more details.
 
16
 *
 
17
 *   You should have received a copy of the GNU General Public License
 
18
 *   along with this program; if not, write to the Free Software
 
19
 *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
 
20
 *
 
21
 */
 
22
 
 
23
#include <linux/delay.h>
 
24
#include <linux/init.h>
 
25
#include <linux/interrupt.h>
 
26
#include <linux/slab.h>
 
27
#include <linux/ioport.h>
 
28
#include <sound/core.h>
 
29
#include <sound/sb.h>
 
30
#include <sound/initval.h>
 
31
 
 
32
#include <asm/io.h>
 
33
#include <asm/dma.h>
 
34
 
 
35
MODULE_AUTHOR("Jaroslav Kysela <perex@perex.cz>");
 
36
MODULE_DESCRIPTION("ALSA lowlevel driver for Sound Blaster cards");
 
37
MODULE_LICENSE("GPL");
 
38
 
 
39
#define BUSY_LOOPS 100000
 
40
 
 
41
#undef IO_DEBUG
 
42
 
 
43
int snd_sbdsp_command(struct snd_sb *chip, unsigned char val)
 
44
{
 
45
        int i;
 
46
#ifdef IO_DEBUG
 
47
        snd_printk(KERN_DEBUG "command 0x%x\n", val);
 
48
#endif
 
49
        for (i = BUSY_LOOPS; i; i--)
 
50
                if ((inb(SBP(chip, STATUS)) & 0x80) == 0) {
 
51
                        outb(val, SBP(chip, COMMAND));
 
52
                        return 1;
 
53
                }
 
54
        snd_printd("%s [0x%lx]: timeout (0x%x)\n", __func__, chip->port, val);
 
55
        return 0;
 
56
}
 
57
 
 
58
int snd_sbdsp_get_byte(struct snd_sb *chip)
 
59
{
 
60
        int val;
 
61
        int i;
 
62
        for (i = BUSY_LOOPS; i; i--) {
 
63
                if (inb(SBP(chip, DATA_AVAIL)) & 0x80) {
 
64
                        val = inb(SBP(chip, READ));
 
65
#ifdef IO_DEBUG
 
66
                        snd_printk(KERN_DEBUG "get_byte 0x%x\n", val);
 
67
#endif
 
68
                        return val;
 
69
                }
 
70
        }
 
71
        snd_printd("%s [0x%lx]: timeout\n", __func__, chip->port);
 
72
        return -ENODEV;
 
73
}
 
74
 
 
75
int snd_sbdsp_reset(struct snd_sb *chip)
 
76
{
 
77
        int i;
 
78
 
 
79
        outb(1, SBP(chip, RESET));
 
80
        udelay(10);
 
81
        outb(0, SBP(chip, RESET));
 
82
        udelay(30);
 
83
        for (i = BUSY_LOOPS; i; i--)
 
84
                if (inb(SBP(chip, DATA_AVAIL)) & 0x80) {
 
85
                        if (inb(SBP(chip, READ)) == 0xaa)
 
86
                                return 0;
 
87
                        else
 
88
                                break;
 
89
                }
 
90
        snd_printdd("%s [0x%lx] failed...\n", __func__, chip->port);
 
91
        return -ENODEV;
 
92
}
 
93
 
 
94
static int snd_sbdsp_version(struct snd_sb * chip)
 
95
{
 
96
        unsigned int result = -ENODEV;
 
97
 
 
98
        snd_sbdsp_command(chip, SB_DSP_GET_VERSION);
 
99
        result = (short) snd_sbdsp_get_byte(chip) << 8;
 
100
        result |= (short) snd_sbdsp_get_byte(chip);
 
101
        return result;
 
102
}
 
103
 
 
104
static int snd_sbdsp_probe(struct snd_sb * chip)
 
105
{
 
106
        int version;
 
107
        int major, minor;
 
108
        char *str;
 
109
        unsigned long flags;
 
110
 
 
111
        /*
 
112
         *  initialization sequence
 
113
         */
 
114
 
 
115
        spin_lock_irqsave(&chip->reg_lock, flags);
 
116
        if (snd_sbdsp_reset(chip) < 0) {
 
117
                spin_unlock_irqrestore(&chip->reg_lock, flags);
 
118
                return -ENODEV;
 
119
        }
 
120
        version = snd_sbdsp_version(chip);
 
121
        if (version < 0) {
 
122
                spin_unlock_irqrestore(&chip->reg_lock, flags);
 
123
                return -ENODEV;
 
124
        }
 
125
        spin_unlock_irqrestore(&chip->reg_lock, flags);
 
126
        major = version >> 8;
 
127
        minor = version & 0xff;
 
128
        snd_printdd("SB [0x%lx]: DSP chip found, version = %i.%i\n",
 
129
                    chip->port, major, minor);
 
130
 
 
131
        switch (chip->hardware) {
 
132
        case SB_HW_AUTO:
 
133
                switch (major) {
 
134
                case 1:
 
135
                        chip->hardware = SB_HW_10;
 
136
                        str = "1.0";
 
137
                        break;
 
138
                case 2:
 
139
                        if (minor) {
 
140
                                chip->hardware = SB_HW_201;
 
141
                                str = "2.01+";
 
142
                        } else {
 
143
                                chip->hardware = SB_HW_20;
 
144
                                str = "2.0";
 
145
                        }
 
146
                        break;
 
147
                case 3:
 
148
                        chip->hardware = SB_HW_PRO;
 
149
                        str = "Pro";
 
150
                        break;
 
151
                case 4:
 
152
                        chip->hardware = SB_HW_16;
 
153
                        str = "16";
 
154
                        break;
 
155
                default:
 
156
                        snd_printk(KERN_INFO "SB [0x%lx]: unknown DSP chip version %i.%i\n",
 
157
                                   chip->port, major, minor);
 
158
                        return -ENODEV;
 
159
                }
 
160
                break;
 
161
        case SB_HW_ALS100:
 
162
                str = "16 (ALS-100)";
 
163
                break;
 
164
        case SB_HW_ALS4000:
 
165
                str = "16 (ALS-4000)";
 
166
                break;
 
167
        case SB_HW_DT019X:
 
168
                str = "(DT019X/ALS007)";
 
169
                break;
 
170
        case SB_HW_CS5530:
 
171
                str = "16 (CS5530)";
 
172
                break;
 
173
        default:
 
174
                return -ENODEV;
 
175
        }
 
176
        sprintf(chip->name, "Sound Blaster %s", str);
 
177
        chip->version = (major << 8) | minor;
 
178
        return 0;
 
179
}
 
180
 
 
181
static int snd_sbdsp_free(struct snd_sb *chip)
 
182
{
 
183
        if (chip->res_port)
 
184
                release_and_free_resource(chip->res_port);
 
185
        if (chip->irq >= 0)
 
186
                free_irq(chip->irq, (void *) chip);
 
187
#ifdef CONFIG_ISA
 
188
        if (chip->dma8 >= 0) {
 
189
                disable_dma(chip->dma8);
 
190
                free_dma(chip->dma8);
 
191
        }
 
192
        if (chip->dma16 >= 0 && chip->dma16 != chip->dma8) {
 
193
                disable_dma(chip->dma16);
 
194
                free_dma(chip->dma16);
 
195
        }
 
196
#endif
 
197
        kfree(chip);
 
198
        return 0;
 
199
}
 
200
 
 
201
static int snd_sbdsp_dev_free(struct snd_device *device)
 
202
{
 
203
        struct snd_sb *chip = device->device_data;
 
204
        return snd_sbdsp_free(chip);
 
205
}
 
206
 
 
207
int snd_sbdsp_create(struct snd_card *card,
 
208
                     unsigned long port,
 
209
                     int irq,
 
210
                     irq_handler_t irq_handler,
 
211
                     int dma8,
 
212
                     int dma16,
 
213
                     unsigned short hardware,
 
214
                     struct snd_sb **r_chip)
 
215
{
 
216
        struct snd_sb *chip;
 
217
        int err;
 
218
        static struct snd_device_ops ops = {
 
219
                .dev_free =     snd_sbdsp_dev_free,
 
220
        };
 
221
 
 
222
        if (snd_BUG_ON(!r_chip))
 
223
                return -EINVAL;
 
224
        *r_chip = NULL;
 
225
        chip = kzalloc(sizeof(*chip), GFP_KERNEL);
 
226
        if (chip == NULL)
 
227
                return -ENOMEM;
 
228
        spin_lock_init(&chip->reg_lock);
 
229
        spin_lock_init(&chip->open_lock);
 
230
        spin_lock_init(&chip->midi_input_lock);
 
231
        spin_lock_init(&chip->mixer_lock);
 
232
        chip->irq = -1;
 
233
        chip->dma8 = -1;
 
234
        chip->dma16 = -1;
 
235
        chip->port = port;
 
236
        
 
237
        if (request_irq(irq, irq_handler,
 
238
                        (hardware == SB_HW_ALS4000 ||
 
239
                         hardware == SB_HW_CS5530) ?
 
240
                        IRQF_SHARED : IRQF_DISABLED,
 
241
                        "SoundBlaster", (void *) chip)) {
 
242
                snd_printk(KERN_ERR "sb: can't grab irq %d\n", irq);
 
243
                snd_sbdsp_free(chip);
 
244
                return -EBUSY;
 
245
        }
 
246
        chip->irq = irq;
 
247
 
 
248
        if (hardware == SB_HW_ALS4000)
 
249
                goto __skip_allocation;
 
250
        
 
251
        if ((chip->res_port = request_region(port, 16, "SoundBlaster")) == NULL) {
 
252
                snd_printk(KERN_ERR "sb: can't grab port 0x%lx\n", port);
 
253
                snd_sbdsp_free(chip);
 
254
                return -EBUSY;
 
255
        }
 
256
 
 
257
#ifdef CONFIG_ISA
 
258
        if (dma8 >= 0 && request_dma(dma8, "SoundBlaster - 8bit")) {
 
259
                snd_printk(KERN_ERR "sb: can't grab DMA8 %d\n", dma8);
 
260
                snd_sbdsp_free(chip);
 
261
                return -EBUSY;
 
262
        }
 
263
        chip->dma8 = dma8;
 
264
        if (dma16 >= 0) {
 
265
                if (hardware != SB_HW_ALS100 && (dma16 < 5 || dma16 > 7)) {
 
266
                        /* no duplex */
 
267
                        dma16 = -1;
 
268
                } else if (request_dma(dma16, "SoundBlaster - 16bit")) {
 
269
                        snd_printk(KERN_ERR "sb: can't grab DMA16 %d\n", dma16);
 
270
                        snd_sbdsp_free(chip);
 
271
                        return -EBUSY;
 
272
                }
 
273
        }
 
274
        chip->dma16 = dma16;
 
275
#endif
 
276
 
 
277
      __skip_allocation:
 
278
        chip->card = card;
 
279
        chip->hardware = hardware;
 
280
        if ((err = snd_sbdsp_probe(chip)) < 0) {
 
281
                snd_sbdsp_free(chip);
 
282
                return err;
 
283
        }
 
284
        if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops)) < 0) {
 
285
                snd_sbdsp_free(chip);
 
286
                return err;
 
287
        }
 
288
        *r_chip = chip;
 
289
        return 0;
 
290
}
 
291
 
 
292
EXPORT_SYMBOL(snd_sbdsp_command);
 
293
EXPORT_SYMBOL(snd_sbdsp_get_byte);
 
294
EXPORT_SYMBOL(snd_sbdsp_reset);
 
295
EXPORT_SYMBOL(snd_sbdsp_create);
 
296
/* sb_mixer.c */
 
297
EXPORT_SYMBOL(snd_sbmixer_write);
 
298
EXPORT_SYMBOL(snd_sbmixer_read);
 
299
EXPORT_SYMBOL(snd_sbmixer_new);
 
300
EXPORT_SYMBOL(snd_sbmixer_add_ctl);
 
301
#ifdef CONFIG_PM
 
302
EXPORT_SYMBOL(snd_sbmixer_suspend);
 
303
EXPORT_SYMBOL(snd_sbmixer_resume);
 
304
#endif
 
305
 
 
306
/*
 
307
 *  INIT part
 
308
 */
 
309
 
 
310
static int __init alsa_sb_common_init(void)
 
311
{
 
312
        return 0;
 
313
}
 
314
 
 
315
static void __exit alsa_sb_common_exit(void)
 
316
{
 
317
}
 
318
 
 
319
module_init(alsa_sb_common_init)
 
320
module_exit(alsa_sb_common_exit)