OpenCores
URL https://opencores.org/ocsvn/or1k_soc_on_altera_embedded_dev_kit/or1k_soc_on_altera_embedded_dev_kit/trunk

Subversion Repositories or1k_soc_on_altera_embedded_dev_kit

[/] [or1k_soc_on_altera_embedded_dev_kit/] [trunk/] [linux-2.6/] [linux-2.6.24/] [sound/] [isa/] [es1688/] [es1688_lib.c] - Blame information for rev 17

Go to most recent revision | Details | Compare with Previous | View Log

Line No. Rev Author Line
1 3 xianfeng 
/*
2 
 *  Copyright (c) by Jaroslav Kysela <perex@perex.cz>
3 
 *  Routines for control of ESS ES1688/688/488 chip
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/interrupt.h>
25 
#include <linux/delay.h>
26 
#include <linux/slab.h>
27 
#include <linux/ioport.h>
28 
#include <sound/core.h>
29 
#include <sound/es1688.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("ESS ESx688 lowlevel module");
37 
MODULE_LICENSE("GPL");
38 
 
39 
static int snd_es1688_dsp_command(struct snd_es1688 *chip, unsigned char val)
40 
{
41 
        int i;
42 
 
43 
        for (i = 10000; i; i--)
44 
                if ((inb(ES1688P(chip, STATUS)) & 0x80) == 0) {
45 
                        outb(val, ES1688P(chip, COMMAND));
46 
                        return 1;
47 
                }
48 
#ifdef CONFIG_SND_DEBUG
49 
        printk("snd_es1688_dsp_command: timeout (0x%x)\n", val);
50 
#endif
51 
        return 0;
52 
}
53 
 
54 
static int snd_es1688_dsp_get_byte(struct snd_es1688 *chip)
55 
{
56 
        int i;
57 
 
58 
        for (i = 1000; i; i--)
59 
                if (inb(ES1688P(chip, DATA_AVAIL)) & 0x80)
60 
                        return inb(ES1688P(chip, READ));
61 
        snd_printd("es1688 get byte failed: 0x%lx = 0x%x!!!\n", ES1688P(chip, DATA_AVAIL), inb(ES1688P(chip, DATA_AVAIL)));
62 
        return -ENODEV;
63 
}
64 
 
65 
static int snd_es1688_write(struct snd_es1688 *chip,
66 
                            unsigned char reg, unsigned char data)
67 
{
68 
        if (!snd_es1688_dsp_command(chip, reg))
69 
                return 0;
70 
        return snd_es1688_dsp_command(chip, data);
71 
}
72 
 
73 
static int snd_es1688_read(struct snd_es1688 *chip, unsigned char reg)
74 
{
75 
        /* Read a byte from an extended mode register of ES1688 */
76 
        if (!snd_es1688_dsp_command(chip, 0xc0))
77 
                return -1;
78 
        if (!snd_es1688_dsp_command(chip, reg))
79 
                return -1;
80 
        return snd_es1688_dsp_get_byte(chip);
81 
}
82 
 
83 
void snd_es1688_mixer_write(struct snd_es1688 *chip,
84 
                            unsigned char reg, unsigned char data)
85 
{
86 
        outb(reg, ES1688P(chip, MIXER_ADDR));
87 
        udelay(10);
88 
        outb(data, ES1688P(chip, MIXER_DATA));
89 
        udelay(10);
90 
}
91 
 
92 
static unsigned char snd_es1688_mixer_read(struct snd_es1688 *chip, unsigned char reg)
93 
{
94 
        unsigned char result;
95 
 
96 
        outb(reg, ES1688P(chip, MIXER_ADDR));
97 
        udelay(10);
98 
        result = inb(ES1688P(chip, MIXER_DATA));
99 
        udelay(10);
100 
        return result;
101 
}
102 
 
103 
static int snd_es1688_reset(struct snd_es1688 *chip)
104 
{
105 
        int i;
106 
 
107 
        outb(3, ES1688P(chip, RESET));          /* valid only for ESS chips, SB -> 1 */
108 
        udelay(10);
109 
        outb(0, ES1688P(chip, RESET));
110 
        udelay(30);
111 
        for (i = 0; i < 1000 && !(inb(ES1688P(chip, DATA_AVAIL)) & 0x80); i++);
112 
        if (inb(ES1688P(chip, READ)) != 0xaa) {
113 
                snd_printd("ess_reset at 0x%lx: failed!!!\n", chip->port);
114 
                return -ENODEV;
115 
        }
116 
        snd_es1688_dsp_command(chip, 0xc6);     /* enable extended mode */
117 
        return 0;
118 
}
119 
 
120 
static int snd_es1688_probe(struct snd_es1688 *chip)
121 
{
122 
        unsigned long flags;
123 
        unsigned short major, minor, hw;
124 
        int i;
125 
 
126 
        /*
127 
         *  initialization sequence
128 
         */
129 
 
130 
        spin_lock_irqsave(&chip->reg_lock, flags);      /* Some ESS1688 cards need this */
131 
        inb(ES1688P(chip, ENABLE1));    /* ENABLE1 */
132 
        inb(ES1688P(chip, ENABLE1));    /* ENABLE1 */
133 
        inb(ES1688P(chip, ENABLE1));    /* ENABLE1 */
134 
        inb(ES1688P(chip, ENABLE2));    /* ENABLE2 */
135 
        inb(ES1688P(chip, ENABLE1));    /* ENABLE1 */
136 
        inb(ES1688P(chip, ENABLE2));    /* ENABLE2 */
137 
        inb(ES1688P(chip, ENABLE1));    /* ENABLE1 */
138 
        inb(ES1688P(chip, ENABLE1));    /* ENABLE1 */
139 
        inb(ES1688P(chip, ENABLE2));    /* ENABLE2 */
140 
        inb(ES1688P(chip, ENABLE1));    /* ENABLE1 */
141 
        inb(ES1688P(chip, ENABLE0));    /* ENABLE0 */
142 
 
143 
        if (snd_es1688_reset(chip) < 0) {
144 
                snd_printdd("ESS: [0x%lx] reset failed... 0x%x\n", chip->port, inb(ES1688P(chip, READ)));
145 
                spin_unlock_irqrestore(&chip->reg_lock, flags);
146 
                return -ENODEV;
147 
        }
148 
        snd_es1688_dsp_command(chip, 0xe7);     /* return identification */
149 
 
150 
        for (i = 1000, major = minor = 0; i; i--) {
151 
                if (inb(ES1688P(chip, DATA_AVAIL)) & 0x80) {
152 
                        if (major == 0) {
153 
                                major = inb(ES1688P(chip, READ));
154 
                        } else {
155 
                                minor = inb(ES1688P(chip, READ));
156 
                        }
157 
                }
158 
        }
159 
 
160 
        spin_unlock_irqrestore(&chip->reg_lock, flags);
161 
 
162 
        snd_printdd("ESS: [0x%lx] found.. major = 0x%x, minor = 0x%x\n", chip->port, major, minor);
163 
 
164 
        chip->version = (major << 8) | minor;
165 
        if (!chip->version)
166 
                return -ENODEV; /* probably SB */
167 
 
168 
        hw = ES1688_HW_AUTO;
169 
        switch (chip->version & 0xfff0) {
170 
        case 0x4880:
171 
                snd_printk("[0x%lx] ESS: AudioDrive ES488 detected, but driver is in another place\n", chip->port);
172 
                return -ENODEV;
173 
        case 0x6880:
174 
                hw = (chip->version & 0x0f) >= 8 ? ES1688_HW_1688 : ES1688_HW_688;
175 
                break;
176 
        default:
177 
                snd_printk("[0x%lx] ESS: unknown AudioDrive chip with version 0x%x (Jazz16 soundcard?)\n", chip->port, chip->version);
178 
                return -ENODEV;
179 
        }
180 
 
181 
        spin_lock_irqsave(&chip->reg_lock, flags);
182 
        snd_es1688_write(chip, 0xb1, 0x10);     /* disable IRQ */
183 
        snd_es1688_write(chip, 0xb2, 0x00);     /* disable DMA */
184 
        spin_unlock_irqrestore(&chip->reg_lock, flags);
185 
 
186 
        /* enable joystick, but disable OPL3 */
187 
        spin_lock_irqsave(&chip->mixer_lock, flags);
188 
        snd_es1688_mixer_write(chip, 0x40, 0x01);
189 
        spin_unlock_irqrestore(&chip->mixer_lock, flags);
190 
 
191 
        return 0;
192 
}
193 
 
194 
static int snd_es1688_init(struct snd_es1688 * chip, int enable)
195 
{
196 
        static int irqs[16] = {-1, -1, 0, -1, -1, 1, -1, 2, -1, 0, 3, -1, -1, -1, -1, -1};
197 
        unsigned long flags;
198 
        int cfg, irq_bits, dma, dma_bits, tmp, tmp1;
199 
 
200 
        /* ok.. setup MPU-401 port and joystick and OPL3 */
201 
        cfg = 0x01;             /* enable joystick, but disable OPL3 */
202 
        if (enable && chip->mpu_port >= 0x300 && chip->mpu_irq > 0 && chip->hardware != ES1688_HW_688) {
203 
                tmp = (chip->mpu_port & 0x0f0) >> 4;
204 
                if (tmp <= 3) {
205 
                        switch (chip->mpu_irq) {
206 
                        case 9:
207 
                                tmp1 = 4;
208 
                                break;
209 
                        case 5:
210 
                                tmp1 = 5;
211 
                                break;
212 
                        case 7:
213 
                                tmp1 = 6;
214 
                                break;
215 
                        case 10:
216 
                                tmp1 = 7;
217 
                                break;
218 
                        default:
219 
                                tmp1 = 0;
220 
                        }
221 
                        if (tmp1) {
222 
                                cfg |= (tmp << 3) | (tmp1 << 5);
223 
                        }
224 
                }
225 
        }
226 
#if 0
227 
        snd_printk("mpu cfg = 0x%x\n", cfg);
228 
#endif
229 
        spin_lock_irqsave(&chip->reg_lock, flags);
230 
        snd_es1688_mixer_write(chip, 0x40, cfg);
231 
        spin_unlock_irqrestore(&chip->reg_lock, flags);
232 
        /* --- */
233 
        spin_lock_irqsave(&chip->reg_lock, flags);
234 
        snd_es1688_read(chip, 0xb1);
235 
        snd_es1688_read(chip, 0xb2);
236 
        spin_unlock_irqrestore(&chip->reg_lock, flags);
237 
        if (enable) {
238 
                cfg = 0xf0;     /* enable only DMA counter interrupt */
239 
                irq_bits = irqs[chip->irq & 0x0f];
240 
                if (irq_bits < 0) {
241 
                        snd_printk("[0x%lx] ESS: bad IRQ %d for ES1688 chip!!\n", chip->port, chip->irq);
242 
#if 0
243 
                        irq_bits = 0;
244 
                        cfg = 0x10;
245 
#endif
246 
                        return -EINVAL;
247 
                }
248 
                spin_lock_irqsave(&chip->reg_lock, flags);
249 
                snd_es1688_write(chip, 0xb1, cfg | (irq_bits << 2));
250 
                spin_unlock_irqrestore(&chip->reg_lock, flags);
251 
                cfg = 0xf0;     /* extended mode DMA enable */
252 
                dma = chip->dma8;
253 
                if (dma > 3 || dma == 2) {
254 
                        snd_printk("[0x%lx] ESS: bad DMA channel %d for ES1688 chip!!\n", chip->port, dma);
255 
#if 0
256 
                        dma_bits = 0;
257 
                        cfg = 0x00;     /* disable all DMA */
258 
#endif
259 
                        return -EINVAL;
260 
                } else {
261 
                        dma_bits = dma;
262 
                        if (dma != 3)
263 
                                dma_bits++;
264 
                }
265 
                spin_lock_irqsave(&chip->reg_lock, flags);
266 
                snd_es1688_write(chip, 0xb2, cfg | (dma_bits << 2));
267 
                spin_unlock_irqrestore(&chip->reg_lock, flags);
268 
        } else {
269 
                spin_lock_irqsave(&chip->reg_lock, flags);
270 
                snd_es1688_write(chip, 0xb1, 0x10);     /* disable IRQ */
271 
                snd_es1688_write(chip, 0xb2, 0x00);     /* disable DMA */
272 
                spin_unlock_irqrestore(&chip->reg_lock, flags);
273 
        }
274 
        spin_lock_irqsave(&chip->reg_lock, flags);
275 
        snd_es1688_read(chip, 0xb1);
276 
        snd_es1688_read(chip, 0xb2);
277 
        snd_es1688_reset(chip);
278 
        spin_unlock_irqrestore(&chip->reg_lock, flags);
279 
        return 0;
280 
}
281 
 
282 
/*
283 
 
284 
 */
285 
 
286 
static struct snd_ratnum clocks[2] = {
287 
        {
288 
                .num = 795444,
289 
                .den_min = 1,
290 
                .den_max = 128,
291 
                .den_step = 1,
292 
        },
293 
        {
294 
                .num = 397722,
295 
                .den_min = 1,
296 
                .den_max = 128,
297 
                .den_step = 1,
298 
        }
299 
};
300 
 
301 
static struct snd_pcm_hw_constraint_ratnums hw_constraints_clocks  = {
302 
        .nrats = 2,
303 
        .rats = clocks,
304 
};
305 
 
306 
static void snd_es1688_set_rate(struct snd_es1688 *chip, struct snd_pcm_substream *substream)
307 
{
308 
        struct snd_pcm_runtime *runtime = substream->runtime;
309 
        unsigned int bits, divider;
310 
 
311 
        if (runtime->rate_num == clocks[0].num)
312 
                bits = 256 - runtime->rate_den;
313 
        else
314 
                bits = 128 - runtime->rate_den;
315 
        /* set filter register */
316 
        divider = 256 - 7160000*20/(8*82*runtime->rate);
317 
        /* write result to hardware */
318 
        snd_es1688_write(chip, 0xa1, bits);
319 
        snd_es1688_write(chip, 0xa2, divider);
320 
}
321 
 
322 
static int snd_es1688_ioctl(struct snd_pcm_substream *substream,
323 
                            unsigned int cmd, void *arg)
324 
{
325 
        return snd_pcm_lib_ioctl(substream, cmd, arg);
326 
}
327 
 
328 
static int snd_es1688_trigger(struct snd_es1688 *chip, int cmd, unsigned char value)
329 
{
330 
        int val;
331 
 
332 
        if (cmd == SNDRV_PCM_TRIGGER_STOP) {
333 
                value = 0x00;
334 
        } else if (cmd != SNDRV_PCM_TRIGGER_START) {
335 
                return -EINVAL;
336 
        }
337 
        spin_lock(&chip->reg_lock);
338 
        chip->trigger_value = value;
339 
        val = snd_es1688_read(chip, 0xb8);
340 
        if ((val < 0) || (val & 0x0f) == value) {
341 
                spin_unlock(&chip->reg_lock);
342 
                return -EINVAL; /* something is wrong */
343 
        }
344 
#if 0
345 
        printk("trigger: val = 0x%x, value = 0x%x\n", val, value);
346 
        printk("trigger: pointer = 0x%x\n", snd_dma_pointer(chip->dma8, chip->dma_size));
347 
#endif
348 
        snd_es1688_write(chip, 0xb8, (val & 0xf0) | value);
349 
        spin_unlock(&chip->reg_lock);
350 
        return 0;
351 
}
352 
 
353 
static int snd_es1688_hw_params(struct snd_pcm_substream *substream,
354 
                                struct snd_pcm_hw_params *hw_params)
355 
{
356 
        return snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params));
357 
}
358 
 
359 
static int snd_es1688_hw_free(struct snd_pcm_substream *substream)
360 
{
361 
        return snd_pcm_lib_free_pages(substream);
362 
}
363 
 
364 
static int snd_es1688_playback_prepare(struct snd_pcm_substream *substream)
365 
{
366 
        unsigned long flags;
367 
        struct snd_es1688 *chip = snd_pcm_substream_chip(substream);
368 
        struct snd_pcm_runtime *runtime = substream->runtime;
369 
        unsigned int size = snd_pcm_lib_buffer_bytes(substream);
370 
        unsigned int count = snd_pcm_lib_period_bytes(substream);
371 
 
372 
        chip->dma_size = size;
373 
        spin_lock_irqsave(&chip->reg_lock, flags);
374 
        snd_es1688_reset(chip);
375 
        snd_es1688_set_rate(chip, substream);
376 
        snd_es1688_write(chip, 0xb8, 4);        /* auto init DMA mode */
377 
        snd_es1688_write(chip, 0xa8, (snd_es1688_read(chip, 0xa8) & ~0x03) | (3 - runtime->channels));
378 
        snd_es1688_write(chip, 0xb9, 2);        /* demand mode (4 bytes/request) */
379 
        if (runtime->channels == 1) {
380 
                if (snd_pcm_format_width(runtime->format) == 8) {
381 
                        /* 8. bit mono */
382 
                        snd_es1688_write(chip, 0xb6, 0x80);
383 
                        snd_es1688_write(chip, 0xb7, 0x51);
384 
                        snd_es1688_write(chip, 0xb7, 0xd0);
385 
                } else {
386 
                        /* 16. bit mono */
387 
                        snd_es1688_write(chip, 0xb6, 0x00);
388 
                        snd_es1688_write(chip, 0xb7, 0x71);
389 
                        snd_es1688_write(chip, 0xb7, 0xf4);
390 
                }
391 
        } else {
392 
                if (snd_pcm_format_width(runtime->format) == 8) {
393 
                        /* 8. bit stereo */
394 
                        snd_es1688_write(chip, 0xb6, 0x80);
395 
                        snd_es1688_write(chip, 0xb7, 0x51);
396 
                        snd_es1688_write(chip, 0xb7, 0x98);
397 
                } else {
398 
                        /* 16. bit stereo */
399 
                        snd_es1688_write(chip, 0xb6, 0x00);
400 
                        snd_es1688_write(chip, 0xb7, 0x71);
401 
                        snd_es1688_write(chip, 0xb7, 0xbc);
402 
                }
403 
        }
404 
        snd_es1688_write(chip, 0xb1, (snd_es1688_read(chip, 0xb1) & 0x0f) | 0x50);
405 
        snd_es1688_write(chip, 0xb2, (snd_es1688_read(chip, 0xb2) & 0x0f) | 0x50);
406 
        snd_es1688_dsp_command(chip, ES1688_DSP_CMD_SPKON);
407 
        spin_unlock_irqrestore(&chip->reg_lock, flags);
408 
        /* --- */
409 
        count = -count;
410 
        snd_dma_program(chip->dma8, runtime->dma_addr, size, DMA_MODE_WRITE | DMA_AUTOINIT);
411 
        spin_lock_irqsave(&chip->reg_lock, flags);
412 
        snd_es1688_write(chip, 0xa4, (unsigned char) count);
413 
        snd_es1688_write(chip, 0xa5, (unsigned char) (count >> 8));
414 
        spin_unlock_irqrestore(&chip->reg_lock, flags);
415 
        return 0;
416 
}
417 
 
418 
static int snd_es1688_playback_trigger(struct snd_pcm_substream *substream,
419 
                                       int cmd)
420 
{
421 
        struct snd_es1688 *chip = snd_pcm_substream_chip(substream);
422 
        return snd_es1688_trigger(chip, cmd, 0x05);
423 
}
424 
 
425 
static int snd_es1688_capture_prepare(struct snd_pcm_substream *substream)
426 
{
427 
        unsigned long flags;
428 
        struct snd_es1688 *chip = snd_pcm_substream_chip(substream);
429 
        struct snd_pcm_runtime *runtime = substream->runtime;
430 
        unsigned int size = snd_pcm_lib_buffer_bytes(substream);
431 
        unsigned int count = snd_pcm_lib_period_bytes(substream);
432 
 
433 
        chip->dma_size = size;
434 
        spin_lock_irqsave(&chip->reg_lock, flags);
435 
        snd_es1688_reset(chip);
436 
        snd_es1688_set_rate(chip, substream);
437 
        snd_es1688_dsp_command(chip, ES1688_DSP_CMD_SPKOFF);
438 
        snd_es1688_write(chip, 0xb8, 0x0e);     /* auto init DMA mode */
439 
        snd_es1688_write(chip, 0xa8, (snd_es1688_read(chip, 0xa8) & ~0x03) | (3 - runtime->channels));
440 
        snd_es1688_write(chip, 0xb9, 2);        /* demand mode (4 bytes/request) */
441 
        if (runtime->channels == 1) {
442 
                if (snd_pcm_format_width(runtime->format) == 8) {
443 
                        /* 8. bit mono */
444 
                        snd_es1688_write(chip, 0xb7, 0x51);
445 
                        snd_es1688_write(chip, 0xb7, 0xd0);
446 
                } else {
447 
                        /* 16. bit mono */
448 
                        snd_es1688_write(chip, 0xb7, 0x71);
449 
                        snd_es1688_write(chip, 0xb7, 0xf4);
450 
                }
451 
        } else {
452 
                if (snd_pcm_format_width(runtime->format) == 8) {
453 
                        /* 8. bit stereo */
454 
                        snd_es1688_write(chip, 0xb7, 0x51);
455 
                        snd_es1688_write(chip, 0xb7, 0x98);
456 
                } else {
457 
                        /* 16. bit stereo */
458 
                        snd_es1688_write(chip, 0xb7, 0x71);
459 
                        snd_es1688_write(chip, 0xb7, 0xbc);
460 
                }
461 
        }
462 
        snd_es1688_write(chip, 0xb1, (snd_es1688_read(chip, 0xb1) & 0x0f) | 0x50);
463 
        snd_es1688_write(chip, 0xb2, (snd_es1688_read(chip, 0xb2) & 0x0f) | 0x50);
464 
        spin_unlock_irqrestore(&chip->reg_lock, flags);
465 
        /* --- */
466 
        count = -count;
467 
        snd_dma_program(chip->dma8, runtime->dma_addr, size, DMA_MODE_READ | DMA_AUTOINIT);
468 
        spin_lock_irqsave(&chip->reg_lock, flags);
469 
        snd_es1688_write(chip, 0xa4, (unsigned char) count);
470 
        snd_es1688_write(chip, 0xa5, (unsigned char) (count >> 8));
471 
        spin_unlock_irqrestore(&chip->reg_lock, flags);
472 
        return 0;
473 
}
474 
 
475 
static int snd_es1688_capture_trigger(struct snd_pcm_substream *substream,
476 
                                      int cmd)
477 
{
478 
        struct snd_es1688 *chip = snd_pcm_substream_chip(substream);
479 
        return snd_es1688_trigger(chip, cmd, 0x0f);
480 
}
481 
 
482 
static irqreturn_t snd_es1688_interrupt(int irq, void *dev_id)
483 
{
484 
        struct snd_es1688 *chip = dev_id;
485 
 
486 
        if (chip->trigger_value == 0x05)        /* ok.. playback is active */
487 
                snd_pcm_period_elapsed(chip->playback_substream);
488 
        if (chip->trigger_value == 0x0f)        /* ok.. capture is active */
489 
                snd_pcm_period_elapsed(chip->capture_substream);
490 
 
491 
        inb(ES1688P(chip, DATA_AVAIL)); /* ack interrupt */
492 
        return IRQ_HANDLED;
493 
}
494 
 
495 
static snd_pcm_uframes_t snd_es1688_playback_pointer(struct snd_pcm_substream *substream)
496 
{
497 
        struct snd_es1688 *chip = snd_pcm_substream_chip(substream);
498 
        size_t ptr;
499 
 
500 
        if (chip->trigger_value != 0x05)
501 
                return 0;
502 
        ptr = snd_dma_pointer(chip->dma8, chip->dma_size);
503 
        return bytes_to_frames(substream->runtime, ptr);
504 
}
505 
 
506 
static snd_pcm_uframes_t snd_es1688_capture_pointer(struct snd_pcm_substream *substream)
507 
{
508 
        struct snd_es1688 *chip = snd_pcm_substream_chip(substream);
509 
        size_t ptr;
510 
 
511 
        if (chip->trigger_value != 0x0f)
512 
                return 0;
513 
        ptr = snd_dma_pointer(chip->dma8, chip->dma_size);
514 
        return bytes_to_frames(substream->runtime, ptr);
515 
}
516 
 
517 
/*
518 
 
519 
 */
520 
 
521 
static struct snd_pcm_hardware snd_es1688_playback =
522 
{
523 
        .info =                 (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
524 
                                 SNDRV_PCM_INFO_MMAP_VALID),
525 
        .formats =              SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE,
526 
        .rates =                SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_8000_48000,
527 
        .rate_min =             4000,
528 
        .rate_max =             48000,
529 
        .channels_min =         1,
530 
        .channels_max =         2,
531 
        .buffer_bytes_max =     65536,
532 
        .period_bytes_min =     64,
533 
        .period_bytes_max =     65536,
534 
        .periods_min =          1,
535 
        .periods_max =          1024,
536 
        .fifo_size =            0,
537 
};
538 
 
539 
static struct snd_pcm_hardware snd_es1688_capture =
540 
{
541 
        .info =                 (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
542 
                                 SNDRV_PCM_INFO_MMAP_VALID),
543 
        .formats =              SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE,
544 
        .rates =                SNDRV_PCM_RATE_CONTINUOUS | SNDRV_PCM_RATE_8000_48000,
545 
        .rate_min =             4000,
546 
        .rate_max =             48000,
547 
        .channels_min =         1,
548 
        .channels_max =         2,
549 
        .buffer_bytes_max =     65536,
550 
        .period_bytes_min =     64,
551 
        .period_bytes_max =     65536,
552 
        .periods_min =          1,
553 
        .periods_max =          1024,
554 
        .fifo_size =            0,
555 
};
556 
 
557 
/*
558 
 
559 
 */
560 
 
561 
static int snd_es1688_playback_open(struct snd_pcm_substream *substream)
562 
{
563 
        struct snd_es1688 *chip = snd_pcm_substream_chip(substream);
564 
        struct snd_pcm_runtime *runtime = substream->runtime;
565 
 
566 
        if (chip->capture_substream != NULL)
567 
                return -EAGAIN;
568 
        chip->playback_substream = substream;
569 
        runtime->hw = snd_es1688_playback;
570 
        snd_pcm_hw_constraint_ratnums(runtime, 0, SNDRV_PCM_HW_PARAM_RATE,
571 
                                      &hw_constraints_clocks);
572 
        return 0;
573 
}
574 
 
575 
static int snd_es1688_capture_open(struct snd_pcm_substream *substream)
576 
{
577 
        struct snd_es1688 *chip = snd_pcm_substream_chip(substream);
578 
        struct snd_pcm_runtime *runtime = substream->runtime;
579 
 
580 
        if (chip->playback_substream != NULL)
581 
                return -EAGAIN;
582 
        chip->capture_substream = substream;
583 
        runtime->hw = snd_es1688_capture;
584 
        snd_pcm_hw_constraint_ratnums(runtime, 0, SNDRV_PCM_HW_PARAM_RATE,
585 
                                      &hw_constraints_clocks);
586 
        return 0;
587 
}
588 
 
589 
static int snd_es1688_playback_close(struct snd_pcm_substream *substream)
590 
{
591 
        struct snd_es1688 *chip = snd_pcm_substream_chip(substream);
592 
 
593 
        chip->playback_substream = NULL;
594 
        return 0;
595 
}
596 
 
597 
static int snd_es1688_capture_close(struct snd_pcm_substream *substream)
598 
{
599 
        struct snd_es1688 *chip = snd_pcm_substream_chip(substream);
600 
 
601 
        chip->capture_substream = NULL;
602 
        return 0;
603 
}
604 
 
605 
static int snd_es1688_free(struct snd_es1688 *chip)
606 
{
607 
        if (chip->res_port) {
608 
                snd_es1688_init(chip, 0);
609 
                release_and_free_resource(chip->res_port);
610 
        }
611 
        if (chip->irq >= 0)
612 
                free_irq(chip->irq, (void *) chip);
613 
        if (chip->dma8 >= 0) {
614 
                disable_dma(chip->dma8);
615 
                free_dma(chip->dma8);
616 
        }
617 
        kfree(chip);
618 
        return 0;
619 
}
620 
 
621 
static int snd_es1688_dev_free(struct snd_device *device)
622 
{
623 
        struct snd_es1688 *chip = device->device_data;
624 
        return snd_es1688_free(chip);
625 
}
626 
 
627 
static const char *snd_es1688_chip_id(struct snd_es1688 *chip)
628 
{
629 
        static char tmp[16];
630 
        sprintf(tmp, "ES%s688 rev %i", chip->hardware == ES1688_HW_688 ? "" : "1", chip->version & 0x0f);
631 
        return tmp;
632 
}
633 
 
634 
int snd_es1688_create(struct snd_card *card,
635 
                      unsigned long port,
636 
                      unsigned long mpu_port,
637 
                      int irq,
638 
                      int mpu_irq,
639 
                      int dma8,
640 
                      unsigned short hardware,
641 
                      struct snd_es1688 **rchip)
642 
{
643 
        static struct snd_device_ops ops = {
644 
                .dev_free =     snd_es1688_dev_free,
645 
        };
646 
 
647 
        struct snd_es1688 *chip;
648 
        int err;
649 
 
650 
        *rchip = NULL;
651 
        chip = kzalloc(sizeof(*chip), GFP_KERNEL);
652 
        if (chip == NULL)
653 
                return -ENOMEM;
654 
        chip->irq = -1;
655 
        chip->dma8 = -1;
656 
 
657 
        if ((chip->res_port = request_region(port + 4, 12, "ES1688")) == NULL) {
658 
                snd_printk(KERN_ERR "es1688: can't grab port 0x%lx\n", port + 4);
659 
                snd_es1688_free(chip);
660 
                return -EBUSY;
661 
        }
662 
        if (request_irq(irq, snd_es1688_interrupt, IRQF_DISABLED, "ES1688", (void *) chip)) {
663 
                snd_printk(KERN_ERR "es1688: can't grab IRQ %d\n", irq);
664 
                snd_es1688_free(chip);
665 
                return -EBUSY;
666 
        }
667 
        chip->irq = irq;
668 
        if (request_dma(dma8, "ES1688")) {
669 
                snd_printk(KERN_ERR "es1688: can't grab DMA8 %d\n", dma8);
670 
                snd_es1688_free(chip);
671 
                return -EBUSY;
672 
        }
673 
        chip->dma8 = dma8;
674 
 
675 
        spin_lock_init(&chip->reg_lock);
676 
        spin_lock_init(&chip->mixer_lock);
677 
        chip->card = card;
678 
        chip->port = port;
679 
        mpu_port &= ~0x000f;
680 
        if (mpu_port < 0x300 || mpu_port > 0x330)
681 
                mpu_port = 0;
682 
        chip->mpu_port = mpu_port;
683 
        chip->mpu_irq = mpu_irq;
684 
        chip->hardware = hardware;
685 
 
686 
        if ((err = snd_es1688_probe(chip)) < 0) {
687 
                snd_es1688_free(chip);
688 
                return err;
689 
        }
690 
        if ((err = snd_es1688_init(chip, 1)) < 0) {
691 
                snd_es1688_free(chip);
692 
                return err;
693 
        }
694 
 
695 
        /* Register device */
696 
        if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops)) < 0) {
697 
                snd_es1688_free(chip);
698 
                return err;
699 
        }
700 
 
701 
        *rchip = chip;
702 
        return 0;
703 
}
704 
 
705 
static struct snd_pcm_ops snd_es1688_playback_ops = {
706 
        .open =                 snd_es1688_playback_open,
707 
        .close =                snd_es1688_playback_close,
708 
        .ioctl =                snd_es1688_ioctl,
709 
        .hw_params =            snd_es1688_hw_params,
710 
        .hw_free =              snd_es1688_hw_free,
711 
        .prepare =              snd_es1688_playback_prepare,
712 
        .trigger =              snd_es1688_playback_trigger,
713 
        .pointer =              snd_es1688_playback_pointer,
714 
};
715 
 
716 
static struct snd_pcm_ops snd_es1688_capture_ops = {
717 
        .open =                 snd_es1688_capture_open,
718 
        .close =                snd_es1688_capture_close,
719 
        .ioctl =                snd_es1688_ioctl,
720 
        .hw_params =            snd_es1688_hw_params,
721 
        .hw_free =              snd_es1688_hw_free,
722 
        .prepare =              snd_es1688_capture_prepare,
723 
        .trigger =              snd_es1688_capture_trigger,
724 
        .pointer =              snd_es1688_capture_pointer,
725 
};
726 
 
727 
int snd_es1688_pcm(struct snd_es1688 * chip, int device, struct snd_pcm ** rpcm)
728 
{
729 
        struct snd_pcm *pcm;
730 
        int err;
731 
 
732 
        if ((err = snd_pcm_new(chip->card, "ESx688", device, 1, 1, &pcm)) < 0)
733 
                return err;
734 
 
735 
        snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_es1688_playback_ops);
736 
        snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_es1688_capture_ops);
737 
 
738 
        pcm->private_data = chip;
739 
        pcm->info_flags = SNDRV_PCM_INFO_HALF_DUPLEX;
740 
        sprintf(pcm->name, snd_es1688_chip_id(chip));
741 
        chip->pcm = pcm;
742 
 
743 
        snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV,
744 
                                              snd_dma_isa_data(),
745 
                                              64*1024, 64*1024);
746 
 
747 
        if (rpcm)
748 
                *rpcm = pcm;
749 
        return 0;
750 
}
751 
 
752 
/*
753 
 *  MIXER part
754 
 */
755 
 
756 
static int snd_es1688_info_mux(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
757 
{
758 
        static char *texts[9] = {
759 
                "Mic", "Mic Master", "CD", "AOUT",
760 
                "Mic1", "Mix", "Line", "Master"
761 
        };
762 
 
763 
        uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
764 
        uinfo->count = 1;
765 
        uinfo->value.enumerated.items = 8;
766 
        if (uinfo->value.enumerated.item > 7)
767 
                uinfo->value.enumerated.item = 7;
768 
        strcpy(uinfo->value.enumerated.name, texts[uinfo->value.enumerated.item]);
769 
        return 0;
770 
}
771 
 
772 
static int snd_es1688_get_mux(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
773 
{
774 
        struct snd_es1688 *chip = snd_kcontrol_chip(kcontrol);
775 
        ucontrol->value.enumerated.item[0] = snd_es1688_mixer_read(chip, ES1688_REC_DEV) & 7;
776 
        return 0;
777 
}
778 
 
779 
static int snd_es1688_put_mux(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
780 
{
781 
        struct snd_es1688 *chip = snd_kcontrol_chip(kcontrol);
782 
        unsigned long flags;
783 
        unsigned char oval, nval;
784 
        int change;
785 
 
786 
        if (ucontrol->value.enumerated.item[0] > 8)
787 
                return -EINVAL;
788 
        spin_lock_irqsave(&chip->reg_lock, flags);
789 
        oval = snd_es1688_mixer_read(chip, ES1688_REC_DEV);
790 
        nval = (ucontrol->value.enumerated.item[0] & 7) | (oval & ~15);
791 
        change = nval != oval;
792 
        if (change)
793 
                snd_es1688_mixer_write(chip, ES1688_REC_DEV, nval);
794 
        spin_unlock_irqrestore(&chip->reg_lock, flags);
795 
        return change;
796 
}
797 
 
798 
#define ES1688_SINGLE(xname, xindex, reg, shift, mask, invert) \
799 
{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = xindex, \
800 
  .info = snd_es1688_info_single, \
801 
  .get = snd_es1688_get_single, .put = snd_es1688_put_single, \
802 
  .private_value = reg | (shift << 8) | (mask << 16) | (invert << 24) }
803 
 
804 
static int snd_es1688_info_single(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
805 
{
806 
        int mask = (kcontrol->private_value >> 16) & 0xff;
807 
 
808 
        uinfo->type = mask == 1 ? SNDRV_CTL_ELEM_TYPE_BOOLEAN : SNDRV_CTL_ELEM_TYPE_INTEGER;
809 
        uinfo->count = 1;
810 
        uinfo->value.integer.min = 0;
811 
        uinfo->value.integer.max = mask;
812 
        return 0;
813 
}
814 
 
815 
static int snd_es1688_get_single(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
816 
{
817 
        struct snd_es1688 *chip = snd_kcontrol_chip(kcontrol);
818 
        unsigned long flags;
819 
        int reg = kcontrol->private_value & 0xff;
820 
        int shift = (kcontrol->private_value >> 8) & 0xff;
821 
        int mask = (kcontrol->private_value >> 16) & 0xff;
822 
        int invert = (kcontrol->private_value >> 24) & 0xff;
823 
 
824 
        spin_lock_irqsave(&chip->reg_lock, flags);
825 
        ucontrol->value.integer.value[0] = (snd_es1688_mixer_read(chip, reg) >> shift) & mask;
826 
        spin_unlock_irqrestore(&chip->reg_lock, flags);
827 
        if (invert)
828 
                ucontrol->value.integer.value[0] = mask - ucontrol->value.integer.value[0];
829 
        return 0;
830 
}
831 
 
832 
static int snd_es1688_put_single(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
833 
{
834 
        struct snd_es1688 *chip = snd_kcontrol_chip(kcontrol);
835 
        unsigned long flags;
836 
        int reg = kcontrol->private_value & 0xff;
837 
        int shift = (kcontrol->private_value >> 8) & 0xff;
838 
        int mask = (kcontrol->private_value >> 16) & 0xff;
839 
        int invert = (kcontrol->private_value >> 24) & 0xff;
840 
        int change;
841 
        unsigned char oval, nval;
842 
 
843 
        nval = (ucontrol->value.integer.value[0] & mask);
844 
        if (invert)
845 
                nval = mask - nval;
846 
        nval <<= shift;
847 
        spin_lock_irqsave(&chip->reg_lock, flags);
848 
        oval = snd_es1688_mixer_read(chip, reg);
849 
        nval = (oval & ~(mask << shift)) | nval;
850 
        change = nval != oval;
851 
        if (change)
852 
                snd_es1688_mixer_write(chip, reg, nval);
853 
        spin_unlock_irqrestore(&chip->reg_lock, flags);
854 
        return change;
855 
}
856 
 
857 
#define ES1688_DOUBLE(xname, xindex, left_reg, right_reg, shift_left, shift_right, mask, invert) \
858 
{ .iface = SNDRV_CTL_ELEM_IFACE_MIXER, .name = xname, .index = xindex, \
859 
  .info = snd_es1688_info_double, \
860 
  .get = snd_es1688_get_double, .put = snd_es1688_put_double, \
861 
  .private_value = left_reg | (right_reg << 8) | (shift_left << 16) | (shift_right << 19) | (mask << 24) | (invert << 22) }
862 
 
863 
static int snd_es1688_info_double(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
864 
{
865 
        int mask = (kcontrol->private_value >> 24) & 0xff;
866 
 
867 
        uinfo->type = mask == 1 ? SNDRV_CTL_ELEM_TYPE_BOOLEAN : SNDRV_CTL_ELEM_TYPE_INTEGER;
868 
        uinfo->count = 2;
869 
        uinfo->value.integer.min = 0;
870 
        uinfo->value.integer.max = mask;
871 
        return 0;
872 
}
873 
 
874 
static int snd_es1688_get_double(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
875 
{
876 
        struct snd_es1688 *chip = snd_kcontrol_chip(kcontrol);
877 
        unsigned long flags;
878 
        int left_reg = kcontrol->private_value & 0xff;
879 
        int right_reg = (kcontrol->private_value >> 8) & 0xff;
880 
        int shift_left = (kcontrol->private_value >> 16) & 0x07;
881 
        int shift_right = (kcontrol->private_value >> 19) & 0x07;
882 
        int mask = (kcontrol->private_value >> 24) & 0xff;
883 
        int invert = (kcontrol->private_value >> 22) & 1;
884 
        unsigned char left, right;
885 
 
886 
        spin_lock_irqsave(&chip->reg_lock, flags);
887 
        if (left_reg < 0xa0)
888 
                left = snd_es1688_mixer_read(chip, left_reg);
889 
        else
890 
                left = snd_es1688_read(chip, left_reg);
891 
        if (left_reg != right_reg) {
892 
                if (right_reg < 0xa0)
893 
                        right = snd_es1688_mixer_read(chip, right_reg);
894 
                else
895 
                        right = snd_es1688_read(chip, right_reg);
896 
        } else
897 
                right = left;
898 
        spin_unlock_irqrestore(&chip->reg_lock, flags);
899 
        ucontrol->value.integer.value[0] = (left >> shift_left) & mask;
900 
        ucontrol->value.integer.value[1] = (right >> shift_right) & mask;
901 
        if (invert) {
902 
                ucontrol->value.integer.value[0] = mask - ucontrol->value.integer.value[0];
903 
                ucontrol->value.integer.value[1] = mask - ucontrol->value.integer.value[1];
904 
        }
905 
        return 0;
906 
}
907 
 
908 
static int snd_es1688_put_double(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
909 
{
910 
        struct snd_es1688 *chip = snd_kcontrol_chip(kcontrol);
911 
        unsigned long flags;
912 
        int left_reg = kcontrol->private_value & 0xff;
913 
        int right_reg = (kcontrol->private_value >> 8) & 0xff;
914 
        int shift_left = (kcontrol->private_value >> 16) & 0x07;
915 
        int shift_right = (kcontrol->private_value >> 19) & 0x07;
916 
        int mask = (kcontrol->private_value >> 24) & 0xff;
917 
        int invert = (kcontrol->private_value >> 22) & 1;
918 
        int change;
919 
        unsigned char val1, val2, oval1, oval2;
920 
 
921 
        val1 = ucontrol->value.integer.value[0] & mask;
922 
        val2 = ucontrol->value.integer.value[1] & mask;
923 
        if (invert) {
924 
                val1 = mask - val1;
925 
                val2 = mask - val2;
926 
        }
927 
        val1 <<= shift_left;
928 
        val2 <<= shift_right;
929 
        spin_lock_irqsave(&chip->reg_lock, flags);
930 
        if (left_reg != right_reg) {
931 
                if (left_reg < 0xa0)
932 
                        oval1 = snd_es1688_mixer_read(chip, left_reg);
933 
                else
934 
                        oval1 = snd_es1688_read(chip, left_reg);
935 
                if (right_reg < 0xa0)
936 
                        oval2 = snd_es1688_mixer_read(chip, right_reg);
937 
                else
938 
                        oval2 = snd_es1688_read(chip, right_reg);
939 
                val1 = (oval1 & ~(mask << shift_left)) | val1;
940 
                val2 = (oval2 & ~(mask << shift_right)) | val2;
941 
                change = val1 != oval1 || val2 != oval2;
942 
                if (change) {
943 
                        if (left_reg < 0xa0)
944 
                                snd_es1688_mixer_write(chip, left_reg, val1);
945 
                        else
946 
                                snd_es1688_write(chip, left_reg, val1);
947 
                        if (right_reg < 0xa0)
948 
                                snd_es1688_mixer_write(chip, right_reg, val1);
949 
                        else
950 
                                snd_es1688_write(chip, right_reg, val1);
951 
                }
952 
        } else {
953 
                if (left_reg < 0xa0)
954 
                        oval1 = snd_es1688_mixer_read(chip, left_reg);
955 
                else
956 
                        oval1 = snd_es1688_read(chip, left_reg);
957 
                val1 = (oval1 & ~((mask << shift_left) | (mask << shift_right))) | val1 | val2;
958 
                change = val1 != oval1;
959 
                if (change) {
960 
                        if (left_reg < 0xa0)
961 
                                snd_es1688_mixer_write(chip, left_reg, val1);
962 
                        else
963 
                                snd_es1688_write(chip, left_reg, val1);
964 
                }
965 
 
966 
        }
967 
        spin_unlock_irqrestore(&chip->reg_lock, flags);
968 
        return change;
969 
}
970 
 
971 
static struct snd_kcontrol_new snd_es1688_controls[] = {
972 
ES1688_DOUBLE("Master Playback Volume", 0, ES1688_MASTER_DEV, ES1688_MASTER_DEV, 4, 0, 15, 0),
973 
ES1688_DOUBLE("PCM Playback Volume", 0, ES1688_PCM_DEV, ES1688_PCM_DEV, 4, 0, 15, 0),
974 
ES1688_DOUBLE("Line Playback Volume", 0, ES1688_LINE_DEV, ES1688_LINE_DEV, 4, 0, 15, 0),
975 
ES1688_DOUBLE("CD Playback Volume", 0, ES1688_CD_DEV, ES1688_CD_DEV, 4, 0, 15, 0),
976 
ES1688_DOUBLE("FM Playback Volume", 0, ES1688_FM_DEV, ES1688_FM_DEV, 4, 0, 15, 0),
977 
ES1688_DOUBLE("Mic Playback Volume", 0, ES1688_MIC_DEV, ES1688_MIC_DEV, 4, 0, 15, 0),
978 
ES1688_DOUBLE("Aux Playback Volume", 0, ES1688_AUX_DEV, ES1688_AUX_DEV, 4, 0, 15, 0),
979 
ES1688_SINGLE("PC Speaker Playback Volume", 0, ES1688_SPEAKER_DEV, 0, 7, 0),
980 
ES1688_DOUBLE("Capture Volume", 0, ES1688_RECLEV_DEV, ES1688_RECLEV_DEV, 4, 0, 15, 0),
981 
ES1688_SINGLE("Capture Switch", 0, ES1688_REC_DEV, 4, 1, 1),
982 
{
983 
        .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
984 
        .name = "Capture Source",
985 
        .info = snd_es1688_info_mux,
986 
        .get = snd_es1688_get_mux,
987 
        .put = snd_es1688_put_mux,
988 
},
989 
};
990 
 
991 
#define ES1688_INIT_TABLE_SIZE (sizeof(snd_es1688_init_table)/2)
992 
 
993 
static unsigned char snd_es1688_init_table[][2] = {
994 
        { ES1688_MASTER_DEV, 0 },
995 
        { ES1688_PCM_DEV, 0 },
996 
        { ES1688_LINE_DEV, 0 },
997 
        { ES1688_CD_DEV, 0 },
998 
        { ES1688_FM_DEV, 0 },
999 
        { ES1688_MIC_DEV, 0 },
1000 
        { ES1688_AUX_DEV, 0 },
1001 
        { ES1688_SPEAKER_DEV, 0 },
1002 
        { ES1688_RECLEV_DEV, 0 },
1003 
        { ES1688_REC_DEV, 0x17 }
1004 
};
1005 
 
1006 
int snd_es1688_mixer(struct snd_es1688 *chip)
1007 
{
1008 
        struct snd_card *card;
1009 
        unsigned int idx;
1010 
        int err;
1011 
        unsigned char reg, val;
1012 
 
1013 
        snd_assert(chip != NULL && chip->card != NULL, return -EINVAL);
1014 
 
1015 
        card = chip->card;
1016 
 
1017 
        strcpy(card->mixername, snd_es1688_chip_id(chip));
1018 
 
1019 
        for (idx = 0; idx < ARRAY_SIZE(snd_es1688_controls); idx++) {
1020 
                if ((err = snd_ctl_add(card, snd_ctl_new1(&snd_es1688_controls[idx], chip))) < 0)
1021 
                        return err;
1022 
        }
1023 
        for (idx = 0; idx < ES1688_INIT_TABLE_SIZE; idx++) {
1024 
                reg = snd_es1688_init_table[idx][0];
1025 
                val = snd_es1688_init_table[idx][1];
1026 
                if (reg < 0xa0)
1027 
                        snd_es1688_mixer_write(chip, reg, val);
1028 
                else
1029 
                        snd_es1688_write(chip, reg, val);
1030 
        }
1031 
        return 0;
1032 
}
1033 
 
1034 
EXPORT_SYMBOL(snd_es1688_mixer_write);
1035 
EXPORT_SYMBOL(snd_es1688_create);
1036 
EXPORT_SYMBOL(snd_es1688_pcm);
1037 
EXPORT_SYMBOL(snd_es1688_mixer);
1038 
 
1039 
/*
1040 
 *  INIT part
1041 
 */
1042 
 
1043 
static int __init alsa_es1688_init(void)
1044 
{
1045 
        return 0;
1046 
}
1047 
 
1048 
static void __exit alsa_es1688_exit(void)
1049 
{
1050 
}
1051 
 
1052 
module_init(alsa_es1688_init)
1053 
module_exit(alsa_es1688_exit)

powered by: WebSVN 2.1.0

© copyright 1999-2024 OpenCores.org, equivalent to Oliscience, all rights reserved. OpenCores®, registered trademark.