2 * Driver for Sound Core PDAudioCF soundcards
6 * Copyright (c) 2003 by Jaroslav Kysela <perex@perex.cz>
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
23 #include <linux/slab.h>
24 #include <linux/delay.h>
25 #include <sound/core.h>
26 #include <sound/asoundef.h>
27 #include "pdaudiocf.h"
31 * clear the SRAM contents
33 static int pdacf_pcm_clear_sram(struct snd_pdacf *chip)
35 int max_loop = 64 * 1024;
37 while (inw(chip->port + PDAUDIOCF_REG_RDP) != inw(chip->port + PDAUDIOCF_REG_WDP)) {
40 inw(chip->port + PDAUDIOCF_REG_MD);
46 * pdacf_pcm_trigger - trigger callback for capture
48 static int pdacf_pcm_trigger(struct snd_pcm_substream *subs, int cmd)
50 struct snd_pdacf *chip = snd_pcm_substream_chip(subs);
51 struct snd_pcm_runtime *runtime = subs->runtime;
52 int inc, ret = 0, rate;
53 unsigned short mask, val, tmp;
55 if (chip->chip_status & PDAUDIOCF_STAT_IS_STALE)
59 case SNDRV_PCM_TRIGGER_START:
63 case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
64 case SNDRV_PCM_TRIGGER_RESUME:
66 val = PDAUDIOCF_RECORD;
68 rate = snd_ak4117_check_rate_and_errors(chip->ak4117, AK4117_CHECK_NO_STAT|AK4117_CHECK_NO_RATE);
70 case SNDRV_PCM_TRIGGER_STOP:
71 case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
72 case SNDRV_PCM_TRIGGER_SUSPEND:
73 mask = PDAUDIOCF_RECORD;
81 spin_lock(&chip->reg_lock);
82 chip->pcm_running += inc;
83 tmp = pdacf_reg_read(chip, PDAUDIOCF_REG_SCR);
84 if (chip->pcm_running) {
85 if ((chip->ak4117->rcs0 & AK4117_UNLCK) || runtime->rate != rate) {
86 chip->pcm_running -= inc;
93 pdacf_reg_write(chip, PDAUDIOCF_REG_SCR, tmp);
95 spin_unlock(&chip->reg_lock);
96 snd_ak4117_check_rate_and_errors(chip->ak4117, AK4117_CHECK_NO_RATE);
101 * pdacf_pcm_hw_params - hw_params callback for playback and capture
103 static int pdacf_pcm_hw_params(struct snd_pcm_substream *subs,
104 struct snd_pcm_hw_params *hw_params)
106 return snd_pcm_lib_alloc_vmalloc_32_buffer
107 (subs, params_buffer_bytes(hw_params));
111 * pdacf_pcm_hw_free - hw_free callback for playback and capture
113 static int pdacf_pcm_hw_free(struct snd_pcm_substream *subs)
115 return snd_pcm_lib_free_vmalloc_buffer(subs);
119 * pdacf_pcm_prepare - prepare callback for playback and capture
121 static int pdacf_pcm_prepare(struct snd_pcm_substream *subs)
123 struct snd_pdacf *chip = snd_pcm_substream_chip(subs);
124 struct snd_pcm_runtime *runtime = subs->runtime;
127 if (chip->chip_status & PDAUDIOCF_STAT_IS_STALE)
130 chip->pcm_channels = runtime->channels;
132 chip->pcm_little = snd_pcm_format_little_endian(runtime->format) > 0;
133 #ifdef SNDRV_LITTLE_ENDIAN
134 chip->pcm_swab = snd_pcm_format_big_endian(runtime->format) > 0;
136 chip->pcm_swab = chip->pcm_little;
139 if (snd_pcm_format_unsigned(runtime->format))
140 chip->pcm_xor = 0x80008000;
142 if (pdacf_pcm_clear_sram(chip) < 0)
145 val = nval = pdacf_reg_read(chip, PDAUDIOCF_REG_SCR);
146 nval &= ~(PDAUDIOCF_DATAFMT0|PDAUDIOCF_DATAFMT1);
147 switch (runtime->format) {
148 case SNDRV_PCM_FORMAT_S16_LE:
149 case SNDRV_PCM_FORMAT_S16_BE:
151 default: /* 24-bit */
152 nval |= PDAUDIOCF_DATAFMT0 | PDAUDIOCF_DATAFMT1;
156 chip->pcm_sample = 4;
157 switch (runtime->format) {
158 case SNDRV_PCM_FORMAT_S16_LE:
159 case SNDRV_PCM_FORMAT_S16_BE:
160 aval = AK4117_DIF_16R;
162 chip->pcm_sample = 2;
164 case SNDRV_PCM_FORMAT_S24_3LE:
165 case SNDRV_PCM_FORMAT_S24_3BE:
166 chip->pcm_sample = 3;
168 default: /* 24-bit */
169 aval = AK4117_DIF_24R;
171 chip->pcm_xor &= 0xffff0000;
176 snd_ak4117_reg_write(chip->ak4117, AK4117_REG_IO, AK4117_DIF2|AK4117_DIF1|AK4117_DIF0, aval);
177 pdacf_reg_write(chip, PDAUDIOCF_REG_SCR, nval);
180 val = pdacf_reg_read(chip, PDAUDIOCF_REG_IER);
181 val &= ~(PDAUDIOCF_IRQLVLEN1);
182 val |= PDAUDIOCF_IRQLVLEN0;
183 pdacf_reg_write(chip, PDAUDIOCF_REG_IER, val);
185 chip->pcm_size = runtime->buffer_size;
186 chip->pcm_period = runtime->period_size;
187 chip->pcm_area = runtime->dma_area;
194 * capture hw information
197 static struct snd_pcm_hardware pdacf_pcm_capture_hw = {
198 .info = (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
199 SNDRV_PCM_INFO_PAUSE | SNDRV_PCM_INFO_RESUME |
200 SNDRV_PCM_INFO_MMAP_VALID |
201 SNDRV_PCM_INFO_BATCH),
202 .formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S16_BE |
203 SNDRV_PCM_FMTBIT_S24_3LE | SNDRV_PCM_FMTBIT_S24_3BE |
204 SNDRV_PCM_FMTBIT_S32_LE | SNDRV_PCM_FMTBIT_S32_BE,
205 .rates = SNDRV_PCM_RATE_32000 |
206 SNDRV_PCM_RATE_44100 |
207 SNDRV_PCM_RATE_48000 |
208 SNDRV_PCM_RATE_88200 |
209 SNDRV_PCM_RATE_96000 |
210 SNDRV_PCM_RATE_176400 |
211 SNDRV_PCM_RATE_192000,
216 .buffer_bytes_max = (512*1024),
217 .period_bytes_min = 8*1024,
218 .period_bytes_max = (64*1024),
226 * pdacf_pcm_capture_open - open callback for capture
228 static int pdacf_pcm_capture_open(struct snd_pcm_substream *subs)
230 struct snd_pcm_runtime *runtime = subs->runtime;
231 struct snd_pdacf *chip = snd_pcm_substream_chip(subs);
233 if (chip->chip_status & PDAUDIOCF_STAT_IS_STALE)
236 runtime->hw = pdacf_pcm_capture_hw;
237 runtime->private_data = chip;
238 chip->pcm_substream = subs;
244 * pdacf_pcm_capture_close - close callback for capture
246 static int pdacf_pcm_capture_close(struct snd_pcm_substream *subs)
248 struct snd_pdacf *chip = snd_pcm_substream_chip(subs);
252 pdacf_reinit(chip, 0);
253 chip->pcm_substream = NULL;
259 * pdacf_pcm_capture_pointer - pointer callback for capture
261 static snd_pcm_uframes_t pdacf_pcm_capture_pointer(struct snd_pcm_substream *subs)
263 struct snd_pdacf *chip = snd_pcm_substream_chip(subs);
264 return chip->pcm_hwptr;
268 * operators for PCM capture
270 static struct snd_pcm_ops pdacf_pcm_capture_ops = {
271 .open = pdacf_pcm_capture_open,
272 .close = pdacf_pcm_capture_close,
273 .ioctl = snd_pcm_lib_ioctl,
274 .hw_params = pdacf_pcm_hw_params,
275 .hw_free = pdacf_pcm_hw_free,
276 .prepare = pdacf_pcm_prepare,
277 .trigger = pdacf_pcm_trigger,
278 .pointer = pdacf_pcm_capture_pointer,
279 .page = snd_pcm_lib_get_vmalloc_page,
280 .mmap = snd_pcm_lib_mmap_vmalloc,
285 * snd_pdacf_pcm_new - create and initialize a pcm
287 int snd_pdacf_pcm_new(struct snd_pdacf *chip)
292 err = snd_pcm_new(chip->card, "PDAudioCF", 0, 0, 1, &pcm);
296 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &pdacf_pcm_capture_ops);
298 pcm->private_data = chip;
300 strcpy(pcm->name, chip->card->shortname);
303 err = snd_ak4117_build(chip->ak4117, pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream);