Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * BRIEF MODULE DESCRIPTION |
| 3 | * Driver for AMD Au1000 MIPS Processor, AC'97 Sound Port |
| 4 | * |
| 5 | * Copyright 2004 Cooper Street Innovations Inc. |
| 6 | * Author: Charles Eidsness <charles@cooper-street.com> |
| 7 | * |
| 8 | * This program is free software; you can redistribute it and/or modify it |
| 9 | * under the terms of the GNU General Public License as published by the |
| 10 | * Free Software Foundation; either version 2 of the License, or (at your |
| 11 | * option) any later version. |
| 12 | * |
| 13 | * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED |
| 14 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF |
| 15 | * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN |
| 16 | * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
| 17 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
| 18 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF |
| 19 | * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON |
| 20 | * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| 21 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
| 22 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 23 | * |
| 24 | * You should have received a copy of the GNU General Public License along |
| 25 | * with this program; if not, write to the Free Software Foundation, Inc., |
| 26 | * 675 Mass Ave, Cambridge, MA 02139, USA. |
| 27 | * |
| 28 | * History: |
| 29 | * |
| 30 | * 2004-09-09 Charles Eidsness -- Original verion -- based on |
| 31 | * sa11xx-uda1341.c ALSA driver and the |
| 32 | * au1000.c OSS driver. |
| 33 | * 2004-09-09 Matt Porter -- Added support for ALSA 1.0.6 |
| 34 | * |
| 35 | */ |
| 36 | |
| 37 | #include <linux/ioport.h> |
| 38 | #include <linux/interrupt.h> |
| 39 | #include <sound/driver.h> |
| 40 | #include <linux/init.h> |
| 41 | #include <linux/slab.h> |
| 42 | #include <linux/version.h> |
| 43 | #include <sound/core.h> |
| 44 | #include <sound/initval.h> |
| 45 | #include <sound/pcm.h> |
Sergei Shtylylov | d8327c7 | 2006-03-20 18:38:21 +0100 | [diff] [blame] | 46 | #include <sound/pcm_params.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 47 | #include <sound/ac97_codec.h> |
| 48 | #include <asm/mach-au1x00/au1000.h> |
| 49 | #include <asm/mach-au1x00/au1000_dma.h> |
| 50 | |
| 51 | MODULE_AUTHOR("Charles Eidsness <charles@cooper-street.com>"); |
| 52 | MODULE_DESCRIPTION("Au1000 AC'97 ALSA Driver"); |
| 53 | MODULE_LICENSE("GPL"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 54 | MODULE_SUPPORTED_DEVICE("{{AMD,Au1000 AC'97}}"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 55 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 56 | #define PLAYBACK 0 |
| 57 | #define CAPTURE 1 |
| 58 | #define AC97_SLOT_3 0x01 |
| 59 | #define AC97_SLOT_4 0x02 |
| 60 | #define AC97_SLOT_6 0x08 |
| 61 | #define AC97_CMD_IRQ 31 |
| 62 | #define READ 0 |
| 63 | #define WRITE 1 |
| 64 | #define READ_WAIT 2 |
| 65 | #define RW_DONE 3 |
| 66 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 67 | struct au1000_period |
| 68 | { |
| 69 | u32 start; |
| 70 | u32 relative_end; /*realtive to start of buffer*/ |
Takashi Iwai | a0d6f88 | 2005-11-17 15:12:31 +0100 | [diff] [blame] | 71 | struct au1000_period * next; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 72 | }; |
| 73 | |
| 74 | /*Au1000 AC97 Port Control Reisters*/ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 75 | struct au1000_ac97_reg { |
| 76 | u32 volatile config; |
| 77 | u32 volatile status; |
| 78 | u32 volatile data; |
| 79 | u32 volatile cmd; |
| 80 | u32 volatile cntrl; |
| 81 | }; |
| 82 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 83 | struct audio_stream { |
Takashi Iwai | a0d6f88 | 2005-11-17 15:12:31 +0100 | [diff] [blame] | 84 | struct snd_pcm_substream *substream; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 85 | int dma; |
| 86 | spinlock_t dma_lock; |
Takashi Iwai | a0d6f88 | 2005-11-17 15:12:31 +0100 | [diff] [blame] | 87 | struct au1000_period * buffer; |
Takashi Iwai | 33ea25c | 2005-11-17 10:32:43 +0100 | [diff] [blame] | 88 | unsigned int period_size; |
| 89 | unsigned int periods; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 90 | }; |
| 91 | |
Takashi Iwai | a0d6f88 | 2005-11-17 15:12:31 +0100 | [diff] [blame] | 92 | struct snd_au1000 { |
| 93 | struct snd_card *card; |
| 94 | struct au1000_ac97_reg volatile *ac97_ioport; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 95 | |
| 96 | struct resource *ac97_res_port; |
| 97 | spinlock_t ac97_lock; |
Takashi Iwai | a0d6f88 | 2005-11-17 15:12:31 +0100 | [diff] [blame] | 98 | struct snd_ac97 *ac97; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 99 | |
Takashi Iwai | a0d6f88 | 2005-11-17 15:12:31 +0100 | [diff] [blame] | 100 | struct snd_pcm *pcm; |
| 101 | struct audio_stream *stream[2]; /* playback & capture */ |
| 102 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 103 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 104 | /*--------------------------- Local Functions --------------------------------*/ |
| 105 | static void |
Takashi Iwai | a0d6f88 | 2005-11-17 15:12:31 +0100 | [diff] [blame] | 106 | au1000_set_ac97_xmit_slots(struct snd_au1000 *au1000, long xmit_slots) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 107 | { |
| 108 | u32 volatile ac97_config; |
| 109 | |
| 110 | spin_lock(&au1000->ac97_lock); |
| 111 | ac97_config = au1000->ac97_ioport->config; |
| 112 | ac97_config = ac97_config & ~AC97C_XMIT_SLOTS_MASK; |
| 113 | ac97_config |= (xmit_slots << AC97C_XMIT_SLOTS_BIT); |
| 114 | au1000->ac97_ioport->config = ac97_config; |
| 115 | spin_unlock(&au1000->ac97_lock); |
| 116 | } |
| 117 | |
| 118 | static void |
Takashi Iwai | a0d6f88 | 2005-11-17 15:12:31 +0100 | [diff] [blame] | 119 | au1000_set_ac97_recv_slots(struct snd_au1000 *au1000, long recv_slots) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 120 | { |
| 121 | u32 volatile ac97_config; |
| 122 | |
| 123 | spin_lock(&au1000->ac97_lock); |
| 124 | ac97_config = au1000->ac97_ioport->config; |
| 125 | ac97_config = ac97_config & ~AC97C_RECV_SLOTS_MASK; |
| 126 | ac97_config |= (recv_slots << AC97C_RECV_SLOTS_BIT); |
| 127 | au1000->ac97_ioport->config = ac97_config; |
| 128 | spin_unlock(&au1000->ac97_lock); |
| 129 | } |
| 130 | |
| 131 | |
| 132 | static void |
Takashi Iwai | a0d6f88 | 2005-11-17 15:12:31 +0100 | [diff] [blame] | 133 | au1000_release_dma_link(struct audio_stream *stream) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 134 | { |
Takashi Iwai | a0d6f88 | 2005-11-17 15:12:31 +0100 | [diff] [blame] | 135 | struct au1000_period * pointer; |
| 136 | struct au1000_period * pointer_next; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 137 | |
Takashi Iwai | 33ea25c | 2005-11-17 10:32:43 +0100 | [diff] [blame] | 138 | stream->period_size = 0; |
| 139 | stream->periods = 0; |
| 140 | pointer = stream->buffer; |
| 141 | if (! pointer) |
| 142 | return; |
| 143 | do { |
| 144 | pointer_next = pointer->next; |
| 145 | kfree(pointer); |
| 146 | pointer = pointer_next; |
| 147 | } while (pointer != stream->buffer); |
| 148 | stream->buffer = NULL; |
| 149 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 150 | |
Takashi Iwai | 33ea25c | 2005-11-17 10:32:43 +0100 | [diff] [blame] | 151 | static int |
Takashi Iwai | a0d6f88 | 2005-11-17 15:12:31 +0100 | [diff] [blame] | 152 | au1000_setup_dma_link(struct audio_stream *stream, unsigned int period_bytes, |
Takashi Iwai | 33ea25c | 2005-11-17 10:32:43 +0100 | [diff] [blame] | 153 | unsigned int periods) |
| 154 | { |
Takashi Iwai | a0d6f88 | 2005-11-17 15:12:31 +0100 | [diff] [blame] | 155 | struct snd_pcm_substream *substream = stream->substream; |
| 156 | struct snd_pcm_runtime *runtime = substream->runtime; |
Sergei Shtylylov | d8327c7 | 2006-03-20 18:38:21 +0100 | [diff] [blame] | 157 | struct au1000_period *pointer; |
Takashi Iwai | 33ea25c | 2005-11-17 10:32:43 +0100 | [diff] [blame] | 158 | unsigned long dma_start; |
| 159 | int i; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 160 | |
Takashi Iwai | 33ea25c | 2005-11-17 10:32:43 +0100 | [diff] [blame] | 161 | dma_start = virt_to_phys(runtime->dma_area); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 162 | |
Takashi Iwai | 33ea25c | 2005-11-17 10:32:43 +0100 | [diff] [blame] | 163 | if (stream->period_size == period_bytes && |
| 164 | stream->periods == periods) |
| 165 | return 0; /* not changed */ |
| 166 | |
| 167 | au1000_release_dma_link(stream); |
| 168 | |
| 169 | stream->period_size = period_bytes; |
| 170 | stream->periods = periods; |
| 171 | |
Takashi Iwai | a0d6f88 | 2005-11-17 15:12:31 +0100 | [diff] [blame] | 172 | stream->buffer = kmalloc(sizeof(struct au1000_period), GFP_KERNEL); |
Takashi Iwai | 33ea25c | 2005-11-17 10:32:43 +0100 | [diff] [blame] | 173 | if (! stream->buffer) |
| 174 | return -ENOMEM; |
| 175 | pointer = stream->buffer; |
| 176 | for (i = 0; i < periods; i++) { |
| 177 | pointer->start = (u32)(dma_start + (i * period_bytes)); |
| 178 | pointer->relative_end = (u32) (((i+1) * period_bytes) - 0x1); |
| 179 | if (i < periods - 1) { |
| 180 | pointer->next = kmalloc(sizeof(struct au1000_period), GFP_KERNEL); |
| 181 | if (! pointer->next) { |
| 182 | au1000_release_dma_link(stream); |
| 183 | return -ENOMEM; |
| 184 | } |
| 185 | pointer = pointer->next; |
| 186 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 187 | } |
Takashi Iwai | 33ea25c | 2005-11-17 10:32:43 +0100 | [diff] [blame] | 188 | pointer->next = stream->buffer; |
| 189 | return 0; |
| 190 | } |
| 191 | |
| 192 | static void |
Takashi Iwai | a0d6f88 | 2005-11-17 15:12:31 +0100 | [diff] [blame] | 193 | au1000_dma_stop(struct audio_stream *stream) |
Takashi Iwai | 33ea25c | 2005-11-17 10:32:43 +0100 | [diff] [blame] | 194 | { |
| 195 | snd_assert(stream->buffer, return); |
| 196 | disable_dma(stream->dma); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 197 | } |
| 198 | |
| 199 | static void |
Takashi Iwai | a0d6f88 | 2005-11-17 15:12:31 +0100 | [diff] [blame] | 200 | au1000_dma_start(struct audio_stream *stream) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 201 | { |
Takashi Iwai | 33ea25c | 2005-11-17 10:32:43 +0100 | [diff] [blame] | 202 | snd_assert(stream->buffer, return); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 203 | |
Takashi Iwai | 33ea25c | 2005-11-17 10:32:43 +0100 | [diff] [blame] | 204 | init_dma(stream->dma); |
| 205 | if (get_dma_active_buffer(stream->dma) == 0) { |
| 206 | clear_dma_done0(stream->dma); |
| 207 | set_dma_addr0(stream->dma, stream->buffer->start); |
| 208 | set_dma_count0(stream->dma, stream->period_size >> 1); |
| 209 | set_dma_addr1(stream->dma, stream->buffer->next->start); |
| 210 | set_dma_count1(stream->dma, stream->period_size >> 1); |
| 211 | } else { |
| 212 | clear_dma_done1(stream->dma); |
| 213 | set_dma_addr1(stream->dma, stream->buffer->start); |
| 214 | set_dma_count1(stream->dma, stream->period_size >> 1); |
| 215 | set_dma_addr0(stream->dma, stream->buffer->next->start); |
| 216 | set_dma_count0(stream->dma, stream->period_size >> 1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 217 | } |
Takashi Iwai | 33ea25c | 2005-11-17 10:32:43 +0100 | [diff] [blame] | 218 | enable_dma_buffers(stream->dma); |
| 219 | start_dma(stream->dma); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 220 | } |
| 221 | |
| 222 | static irqreturn_t |
David Howells | 7d12e78 | 2006-10-05 14:55:46 +0100 | [diff] [blame] | 223 | au1000_dma_interrupt(int irq, void *dev_id) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 224 | { |
Takashi Iwai | a0d6f88 | 2005-11-17 15:12:31 +0100 | [diff] [blame] | 225 | struct audio_stream *stream = (struct audio_stream *) dev_id; |
| 226 | struct snd_pcm_substream *substream = stream->substream; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 227 | |
| 228 | spin_lock(&stream->dma_lock); |
| 229 | switch (get_dma_buffer_done(stream->dma)) { |
| 230 | case DMA_D0: |
| 231 | stream->buffer = stream->buffer->next; |
| 232 | clear_dma_done0(stream->dma); |
| 233 | set_dma_addr0(stream->dma, stream->buffer->next->start); |
| 234 | set_dma_count0(stream->dma, stream->period_size >> 1); |
| 235 | enable_dma_buffer0(stream->dma); |
| 236 | break; |
| 237 | case DMA_D1: |
| 238 | stream->buffer = stream->buffer->next; |
| 239 | clear_dma_done1(stream->dma); |
| 240 | set_dma_addr1(stream->dma, stream->buffer->next->start); |
| 241 | set_dma_count1(stream->dma, stream->period_size >> 1); |
| 242 | enable_dma_buffer1(stream->dma); |
| 243 | break; |
| 244 | case (DMA_D0 | DMA_D1): |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 245 | printk(KERN_ERR "DMA %d missed interrupt.\n",stream->dma); |
| 246 | au1000_dma_stop(stream); |
| 247 | au1000_dma_start(stream); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 248 | break; |
| 249 | case (~DMA_D0 & ~DMA_D1): |
| 250 | printk(KERN_ERR "DMA %d empty irq.\n",stream->dma); |
| 251 | } |
| 252 | spin_unlock(&stream->dma_lock); |
| 253 | snd_pcm_period_elapsed(substream); |
| 254 | return IRQ_HANDLED; |
| 255 | } |
| 256 | |
| 257 | /*-------------------------- PCM Audio Streams -------------------------------*/ |
| 258 | |
| 259 | static unsigned int rates[] = {8000, 11025, 16000, 22050}; |
Takashi Iwai | a0d6f88 | 2005-11-17 15:12:31 +0100 | [diff] [blame] | 260 | static struct snd_pcm_hw_constraint_list hw_constraints_rates = { |
Tobias Klauser | 2ad3479 | 2006-09-29 02:00:20 -0700 | [diff] [blame] | 261 | .count = ARRAY_SIZE(rates), |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 262 | .list = rates, |
| 263 | .mask = 0, |
| 264 | }; |
| 265 | |
Takashi Iwai | a0d6f88 | 2005-11-17 15:12:31 +0100 | [diff] [blame] | 266 | static struct snd_pcm_hardware snd_au1000_hw = |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 267 | { |
| 268 | .info = (SNDRV_PCM_INFO_INTERLEAVED | \ |
| 269 | SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_MMAP_VALID), |
| 270 | .formats = SNDRV_PCM_FMTBIT_S16_LE, |
| 271 | .rates = (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_11025 | |
| 272 | SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_22050), |
| 273 | .rate_min = 8000, |
| 274 | .rate_max = 22050, |
| 275 | .channels_min = 1, |
| 276 | .channels_max = 2, |
| 277 | .buffer_bytes_max = 128*1024, |
| 278 | .period_bytes_min = 32, |
| 279 | .period_bytes_max = 16*1024, |
| 280 | .periods_min = 8, |
| 281 | .periods_max = 255, |
| 282 | .fifo_size = 16, |
| 283 | }; |
| 284 | |
| 285 | static int |
Takashi Iwai | a0d6f88 | 2005-11-17 15:12:31 +0100 | [diff] [blame] | 286 | snd_au1000_playback_open(struct snd_pcm_substream *substream) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 287 | { |
Takashi Iwai | a0d6f88 | 2005-11-17 15:12:31 +0100 | [diff] [blame] | 288 | struct snd_au1000 *au1000 = substream->pcm->private_data; |
Takashi Iwai | 33ea25c | 2005-11-17 10:32:43 +0100 | [diff] [blame] | 289 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 290 | au1000->stream[PLAYBACK]->substream = substream; |
| 291 | au1000->stream[PLAYBACK]->buffer = NULL; |
| 292 | substream->private_data = au1000->stream[PLAYBACK]; |
Takashi Iwai | 33ea25c | 2005-11-17 10:32:43 +0100 | [diff] [blame] | 293 | substream->runtime->hw = snd_au1000_hw; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 294 | return (snd_pcm_hw_constraint_list(substream->runtime, 0, |
| 295 | SNDRV_PCM_HW_PARAM_RATE, &hw_constraints_rates) < 0); |
| 296 | } |
| 297 | |
| 298 | static int |
Takashi Iwai | a0d6f88 | 2005-11-17 15:12:31 +0100 | [diff] [blame] | 299 | snd_au1000_capture_open(struct snd_pcm_substream *substream) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 300 | { |
Takashi Iwai | a0d6f88 | 2005-11-17 15:12:31 +0100 | [diff] [blame] | 301 | struct snd_au1000 *au1000 = substream->pcm->private_data; |
Takashi Iwai | 33ea25c | 2005-11-17 10:32:43 +0100 | [diff] [blame] | 302 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 303 | au1000->stream[CAPTURE]->substream = substream; |
| 304 | au1000->stream[CAPTURE]->buffer = NULL; |
| 305 | substream->private_data = au1000->stream[CAPTURE]; |
Takashi Iwai | 33ea25c | 2005-11-17 10:32:43 +0100 | [diff] [blame] | 306 | substream->runtime->hw = snd_au1000_hw; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 307 | return (snd_pcm_hw_constraint_list(substream->runtime, 0, |
| 308 | SNDRV_PCM_HW_PARAM_RATE, &hw_constraints_rates) < 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 309 | } |
| 310 | |
| 311 | static int |
Takashi Iwai | a0d6f88 | 2005-11-17 15:12:31 +0100 | [diff] [blame] | 312 | snd_au1000_playback_close(struct snd_pcm_substream *substream) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 313 | { |
Takashi Iwai | a0d6f88 | 2005-11-17 15:12:31 +0100 | [diff] [blame] | 314 | struct snd_au1000 *au1000 = substream->pcm->private_data; |
Takashi Iwai | 33ea25c | 2005-11-17 10:32:43 +0100 | [diff] [blame] | 315 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 316 | au1000->stream[PLAYBACK]->substream = NULL; |
| 317 | return 0; |
| 318 | } |
| 319 | |
| 320 | static int |
Takashi Iwai | a0d6f88 | 2005-11-17 15:12:31 +0100 | [diff] [blame] | 321 | snd_au1000_capture_close(struct snd_pcm_substream *substream) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 322 | { |
Takashi Iwai | a0d6f88 | 2005-11-17 15:12:31 +0100 | [diff] [blame] | 323 | struct snd_au1000 *au1000 = substream->pcm->private_data; |
Takashi Iwai | 33ea25c | 2005-11-17 10:32:43 +0100 | [diff] [blame] | 324 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 325 | au1000->stream[CAPTURE]->substream = NULL; |
| 326 | return 0; |
| 327 | } |
| 328 | |
| 329 | static int |
Takashi Iwai | a0d6f88 | 2005-11-17 15:12:31 +0100 | [diff] [blame] | 330 | snd_au1000_hw_params(struct snd_pcm_substream *substream, |
| 331 | struct snd_pcm_hw_params *hw_params) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 332 | { |
Takashi Iwai | a0d6f88 | 2005-11-17 15:12:31 +0100 | [diff] [blame] | 333 | struct audio_stream *stream = substream->private_data; |
Takashi Iwai | 33ea25c | 2005-11-17 10:32:43 +0100 | [diff] [blame] | 334 | int err; |
| 335 | |
| 336 | err = snd_pcm_lib_malloc_pages(substream, |
| 337 | params_buffer_bytes(hw_params)); |
| 338 | if (err < 0) |
| 339 | return err; |
| 340 | return au1000_setup_dma_link(stream, |
| 341 | params_period_bytes(hw_params), |
| 342 | params_periods(hw_params)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 343 | } |
| 344 | |
| 345 | static int |
Takashi Iwai | a0d6f88 | 2005-11-17 15:12:31 +0100 | [diff] [blame] | 346 | snd_au1000_hw_free(struct snd_pcm_substream *substream) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 347 | { |
Takashi Iwai | a0d6f88 | 2005-11-17 15:12:31 +0100 | [diff] [blame] | 348 | struct audio_stream *stream = substream->private_data; |
Takashi Iwai | 33ea25c | 2005-11-17 10:32:43 +0100 | [diff] [blame] | 349 | au1000_release_dma_link(stream); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 350 | return snd_pcm_lib_free_pages(substream); |
| 351 | } |
| 352 | |
| 353 | static int |
Takashi Iwai | a0d6f88 | 2005-11-17 15:12:31 +0100 | [diff] [blame] | 354 | snd_au1000_playback_prepare(struct snd_pcm_substream *substream) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 355 | { |
Takashi Iwai | a0d6f88 | 2005-11-17 15:12:31 +0100 | [diff] [blame] | 356 | struct snd_au1000 *au1000 = substream->pcm->private_data; |
| 357 | struct snd_pcm_runtime *runtime = substream->runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 358 | |
Takashi Iwai | 33ea25c | 2005-11-17 10:32:43 +0100 | [diff] [blame] | 359 | if (runtime->channels == 1) |
| 360 | au1000_set_ac97_xmit_slots(au1000, AC97_SLOT_4); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 361 | else |
Takashi Iwai | 33ea25c | 2005-11-17 10:32:43 +0100 | [diff] [blame] | 362 | au1000_set_ac97_xmit_slots(au1000, AC97_SLOT_3 | AC97_SLOT_4); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 363 | snd_ac97_set_rate(au1000->ac97, AC97_PCM_FRONT_DAC_RATE, runtime->rate); |
| 364 | return 0; |
| 365 | } |
| 366 | |
| 367 | static int |
Takashi Iwai | a0d6f88 | 2005-11-17 15:12:31 +0100 | [diff] [blame] | 368 | snd_au1000_capture_prepare(struct snd_pcm_substream *substream) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 369 | { |
Takashi Iwai | a0d6f88 | 2005-11-17 15:12:31 +0100 | [diff] [blame] | 370 | struct snd_au1000 *au1000 = substream->pcm->private_data; |
| 371 | struct snd_pcm_runtime *runtime = substream->runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 372 | |
Takashi Iwai | 33ea25c | 2005-11-17 10:32:43 +0100 | [diff] [blame] | 373 | if (runtime->channels == 1) |
| 374 | au1000_set_ac97_recv_slots(au1000, AC97_SLOT_4); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 375 | else |
Takashi Iwai | 33ea25c | 2005-11-17 10:32:43 +0100 | [diff] [blame] | 376 | au1000_set_ac97_recv_slots(au1000, AC97_SLOT_3 | AC97_SLOT_4); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 377 | snd_ac97_set_rate(au1000->ac97, AC97_PCM_LR_ADC_RATE, runtime->rate); |
| 378 | return 0; |
| 379 | } |
| 380 | |
| 381 | static int |
Takashi Iwai | a0d6f88 | 2005-11-17 15:12:31 +0100 | [diff] [blame] | 382 | snd_au1000_trigger(struct snd_pcm_substream *substream, int cmd) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 383 | { |
Takashi Iwai | a0d6f88 | 2005-11-17 15:12:31 +0100 | [diff] [blame] | 384 | struct audio_stream *stream = substream->private_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 385 | int err = 0; |
| 386 | |
Takashi Iwai | 33ea25c | 2005-11-17 10:32:43 +0100 | [diff] [blame] | 387 | spin_lock(&stream->dma_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 388 | switch (cmd) { |
| 389 | case SNDRV_PCM_TRIGGER_START: |
| 390 | au1000_dma_start(stream); |
| 391 | break; |
| 392 | case SNDRV_PCM_TRIGGER_STOP: |
| 393 | au1000_dma_stop(stream); |
| 394 | break; |
| 395 | default: |
| 396 | err = -EINVAL; |
| 397 | break; |
| 398 | } |
Takashi Iwai | 33ea25c | 2005-11-17 10:32:43 +0100 | [diff] [blame] | 399 | spin_unlock(&stream->dma_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 400 | return err; |
| 401 | } |
| 402 | |
| 403 | static snd_pcm_uframes_t |
Takashi Iwai | a0d6f88 | 2005-11-17 15:12:31 +0100 | [diff] [blame] | 404 | snd_au1000_pointer(struct snd_pcm_substream *substream) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 405 | { |
Takashi Iwai | a0d6f88 | 2005-11-17 15:12:31 +0100 | [diff] [blame] | 406 | struct audio_stream *stream = substream->private_data; |
| 407 | struct snd_pcm_runtime *runtime = substream->runtime; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 408 | long location; |
| 409 | |
Takashi Iwai | 33ea25c | 2005-11-17 10:32:43 +0100 | [diff] [blame] | 410 | spin_lock(&stream->dma_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 411 | location = get_dma_residue(stream->dma); |
Takashi Iwai | 33ea25c | 2005-11-17 10:32:43 +0100 | [diff] [blame] | 412 | spin_unlock(&stream->dma_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 413 | location = stream->buffer->relative_end - location; |
| 414 | if (location == -1) |
| 415 | location = 0; |
| 416 | return bytes_to_frames(runtime,location); |
| 417 | } |
| 418 | |
Takashi Iwai | a0d6f88 | 2005-11-17 15:12:31 +0100 | [diff] [blame] | 419 | static struct snd_pcm_ops snd_card_au1000_playback_ops = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 420 | .open = snd_au1000_playback_open, |
| 421 | .close = snd_au1000_playback_close, |
| 422 | .ioctl = snd_pcm_lib_ioctl, |
| 423 | .hw_params = snd_au1000_hw_params, |
| 424 | .hw_free = snd_au1000_hw_free, |
| 425 | .prepare = snd_au1000_playback_prepare, |
| 426 | .trigger = snd_au1000_trigger, |
| 427 | .pointer = snd_au1000_pointer, |
| 428 | }; |
| 429 | |
Takashi Iwai | a0d6f88 | 2005-11-17 15:12:31 +0100 | [diff] [blame] | 430 | static struct snd_pcm_ops snd_card_au1000_capture_ops = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 431 | .open = snd_au1000_capture_open, |
| 432 | .close = snd_au1000_capture_close, |
| 433 | .ioctl = snd_pcm_lib_ioctl, |
| 434 | .hw_params = snd_au1000_hw_params, |
| 435 | .hw_free = snd_au1000_hw_free, |
| 436 | .prepare = snd_au1000_capture_prepare, |
| 437 | .trigger = snd_au1000_trigger, |
| 438 | .pointer = snd_au1000_pointer, |
| 439 | }; |
| 440 | |
| 441 | static int __devinit |
Takashi Iwai | a0d6f88 | 2005-11-17 15:12:31 +0100 | [diff] [blame] | 442 | snd_au1000_pcm_new(struct snd_au1000 *au1000) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 443 | { |
Takashi Iwai | a0d6f88 | 2005-11-17 15:12:31 +0100 | [diff] [blame] | 444 | struct snd_pcm *pcm; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 445 | int err; |
| 446 | unsigned long flags; |
| 447 | |
| 448 | if ((err = snd_pcm_new(au1000->card, "AU1000 AC97 PCM", 0, 1, 1, &pcm)) < 0) |
| 449 | return err; |
| 450 | |
| 451 | snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_CONTINUOUS, |
| 452 | snd_dma_continuous_data(GFP_KERNEL), 128*1024, 128*1024); |
| 453 | |
| 454 | snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, |
| 455 | &snd_card_au1000_playback_ops); |
| 456 | snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, |
| 457 | &snd_card_au1000_capture_ops); |
| 458 | |
| 459 | pcm->private_data = au1000; |
| 460 | pcm->info_flags = 0; |
| 461 | strcpy(pcm->name, "Au1000 AC97 PCM"); |
| 462 | |
Takashi Iwai | 33ea25c | 2005-11-17 10:32:43 +0100 | [diff] [blame] | 463 | spin_lock_init(&au1000->stream[PLAYBACK]->dma_lock); |
| 464 | spin_lock_init(&au1000->stream[CAPTURE]->dma_lock); |
| 465 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 466 | flags = claim_dma_lock(); |
| 467 | if ((au1000->stream[PLAYBACK]->dma = request_au1000_dma(DMA_ID_AC97C_TX, |
Thomas Gleixner | 65ca68b | 2006-07-01 19:29:46 -0700 | [diff] [blame] | 468 | "AC97 TX", au1000_dma_interrupt, IRQF_DISABLED, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 469 | au1000->stream[PLAYBACK])) < 0) { |
| 470 | release_dma_lock(flags); |
| 471 | return -EBUSY; |
| 472 | } |
| 473 | if ((au1000->stream[CAPTURE]->dma = request_au1000_dma(DMA_ID_AC97C_RX, |
Thomas Gleixner | 65ca68b | 2006-07-01 19:29:46 -0700 | [diff] [blame] | 474 | "AC97 RX", au1000_dma_interrupt, IRQF_DISABLED, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 475 | au1000->stream[CAPTURE])) < 0){ |
| 476 | release_dma_lock(flags); |
| 477 | return -EBUSY; |
| 478 | } |
| 479 | /* enable DMA coherency in read/write DMA channels */ |
| 480 | set_dma_mode(au1000->stream[PLAYBACK]->dma, |
| 481 | get_dma_mode(au1000->stream[PLAYBACK]->dma) & ~DMA_NC); |
| 482 | set_dma_mode(au1000->stream[CAPTURE]->dma, |
| 483 | get_dma_mode(au1000->stream[CAPTURE]->dma) & ~DMA_NC); |
| 484 | release_dma_lock(flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 485 | au1000->pcm = pcm; |
| 486 | return 0; |
| 487 | } |
| 488 | |
| 489 | |
| 490 | /*-------------------------- AC97 CODEC Control ------------------------------*/ |
| 491 | |
| 492 | static unsigned short |
Takashi Iwai | a0d6f88 | 2005-11-17 15:12:31 +0100 | [diff] [blame] | 493 | snd_au1000_ac97_read(struct snd_ac97 *ac97, unsigned short reg) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 494 | { |
Takashi Iwai | a0d6f88 | 2005-11-17 15:12:31 +0100 | [diff] [blame] | 495 | struct snd_au1000 *au1000 = ac97->private_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 496 | u32 volatile cmd; |
| 497 | u16 volatile data; |
| 498 | int i; |
Takashi Iwai | 33ea25c | 2005-11-17 10:32:43 +0100 | [diff] [blame] | 499 | |
Konstantin Baydarov | 708f997 | 2005-10-27 17:25:02 +0200 | [diff] [blame] | 500 | spin_lock(&au1000->ac97_lock); |
Robert P. J. Day | 3a4fa0a | 2007-10-19 23:10:43 +0200 | [diff] [blame^] | 501 | /* would rather use the interrupt than this polling but it works and I can't |
| 502 | get the interrupt driven case to work efficiently */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 503 | for (i = 0; i < 0x5000; i++) |
| 504 | if (!(au1000->ac97_ioport->status & AC97C_CP)) |
| 505 | break; |
| 506 | if (i == 0x5000) |
| 507 | printk(KERN_ERR "au1000 AC97: AC97 command read timeout\n"); |
| 508 | |
| 509 | cmd = (u32) reg & AC97C_INDEX_MASK; |
| 510 | cmd |= AC97C_READ; |
| 511 | au1000->ac97_ioport->cmd = cmd; |
| 512 | |
| 513 | /* now wait for the data */ |
| 514 | for (i = 0; i < 0x5000; i++) |
| 515 | if (!(au1000->ac97_ioport->status & AC97C_CP)) |
| 516 | break; |
| 517 | if (i == 0x5000) { |
| 518 | printk(KERN_ERR "au1000 AC97: AC97 command read timeout\n"); |
| 519 | return 0; |
| 520 | } |
| 521 | |
| 522 | data = au1000->ac97_ioport->cmd & 0xffff; |
Konstantin Baydarov | 708f997 | 2005-10-27 17:25:02 +0200 | [diff] [blame] | 523 | spin_unlock(&au1000->ac97_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 524 | |
| 525 | return data; |
| 526 | |
| 527 | } |
| 528 | |
| 529 | |
| 530 | static void |
Takashi Iwai | a0d6f88 | 2005-11-17 15:12:31 +0100 | [diff] [blame] | 531 | snd_au1000_ac97_write(struct snd_ac97 *ac97, unsigned short reg, unsigned short val) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 532 | { |
Takashi Iwai | a0d6f88 | 2005-11-17 15:12:31 +0100 | [diff] [blame] | 533 | struct snd_au1000 *au1000 = ac97->private_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 534 | u32 cmd; |
| 535 | int i; |
Takashi Iwai | 33ea25c | 2005-11-17 10:32:43 +0100 | [diff] [blame] | 536 | |
Konstantin Baydarov | 708f997 | 2005-10-27 17:25:02 +0200 | [diff] [blame] | 537 | spin_lock(&au1000->ac97_lock); |
Robert P. J. Day | 3a4fa0a | 2007-10-19 23:10:43 +0200 | [diff] [blame^] | 538 | /* would rather use the interrupt than this polling but it works and I can't |
| 539 | get the interrupt driven case to work efficiently */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 540 | for (i = 0; i < 0x5000; i++) |
| 541 | if (!(au1000->ac97_ioport->status & AC97C_CP)) |
| 542 | break; |
| 543 | if (i == 0x5000) |
| 544 | printk(KERN_ERR "au1000 AC97: AC97 command write timeout\n"); |
| 545 | |
| 546 | cmd = (u32) reg & AC97C_INDEX_MASK; |
| 547 | cmd &= ~AC97C_READ; |
| 548 | cmd |= ((u32) val << AC97C_WD_BIT); |
| 549 | au1000->ac97_ioport->cmd = cmd; |
Konstantin Baydarov | 708f997 | 2005-10-27 17:25:02 +0200 | [diff] [blame] | 550 | spin_unlock(&au1000->ac97_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 551 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 552 | |
| 553 | static int __devinit |
Takashi Iwai | a0d6f88 | 2005-11-17 15:12:31 +0100 | [diff] [blame] | 554 | snd_au1000_ac97_new(struct snd_au1000 *au1000) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 555 | { |
| 556 | int err; |
Takashi Iwai | a0d6f88 | 2005-11-17 15:12:31 +0100 | [diff] [blame] | 557 | struct snd_ac97_bus *pbus; |
| 558 | struct snd_ac97_template ac97; |
| 559 | static struct snd_ac97_bus_ops ops = { |
| 560 | .write = snd_au1000_ac97_write, |
| 561 | .read = snd_au1000_ac97_read, |
| 562 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 563 | |
Sergei Shtylyov | c5c079e | 2006-03-21 12:01:17 +0100 | [diff] [blame] | 564 | if ((au1000->ac97_res_port = request_mem_region(CPHYSADDR(AC97C_CONFIG), |
| 565 | 0x100000, "Au1x00 AC97")) == NULL) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 566 | snd_printk(KERN_ERR "ALSA AC97: can't grap AC97 port\n"); |
| 567 | return -EBUSY; |
| 568 | } |
Sergei Shtylyov | c5c079e | 2006-03-21 12:01:17 +0100 | [diff] [blame] | 569 | au1000->ac97_ioport = (struct au1000_ac97_reg *) |
| 570 | KSEG1ADDR(au1000->ac97_res_port->start); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 571 | |
| 572 | spin_lock_init(&au1000->ac97_lock); |
| 573 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 574 | /* configure pins for AC'97 |
| 575 | TODO: move to board_setup.c */ |
| 576 | au_writel(au_readl(SYS_PINFUNC) & ~0x02, SYS_PINFUNC); |
| 577 | |
| 578 | /* Initialise Au1000's AC'97 Control Block */ |
| 579 | au1000->ac97_ioport->cntrl = AC97C_RS | AC97C_CE; |
| 580 | udelay(10); |
| 581 | au1000->ac97_ioport->cntrl = AC97C_CE; |
| 582 | udelay(10); |
| 583 | |
| 584 | /* Initialise External CODEC -- cold reset */ |
| 585 | au1000->ac97_ioport->config = AC97C_RESET; |
| 586 | udelay(10); |
| 587 | au1000->ac97_ioport->config = 0x0; |
| 588 | mdelay(5); |
| 589 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 590 | /* Initialise AC97 middle-layer */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 591 | if ((err = snd_ac97_bus(au1000->card, 0, &ops, au1000, &pbus)) < 0) |
| 592 | return err; |
Takashi Iwai | 33ea25c | 2005-11-17 10:32:43 +0100 | [diff] [blame] | 593 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 594 | memset(&ac97, 0, sizeof(ac97)); |
| 595 | ac97.private_data = au1000; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 596 | if ((err = snd_ac97_mixer(pbus, &ac97, &au1000->ac97)) < 0) |
| 597 | return err; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 598 | |
Takashi Iwai | 33ea25c | 2005-11-17 10:32:43 +0100 | [diff] [blame] | 599 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 600 | } |
| 601 | |
| 602 | /*------------------------------ Setup / Destroy ----------------------------*/ |
| 603 | |
| 604 | void |
Takashi Iwai | a0d6f88 | 2005-11-17 15:12:31 +0100 | [diff] [blame] | 605 | snd_au1000_free(struct snd_card *card) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 606 | { |
Takashi Iwai | a0d6f88 | 2005-11-17 15:12:31 +0100 | [diff] [blame] | 607 | struct snd_au1000 *au1000 = card->private_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 608 | |
| 609 | if (au1000->ac97_res_port) { |
| 610 | /* put internal AC97 block into reset */ |
| 611 | au1000->ac97_ioport->cntrl = AC97C_RS; |
| 612 | au1000->ac97_ioport = NULL; |
Takashi Iwai | b1d5776 | 2005-10-10 11:56:31 +0200 | [diff] [blame] | 613 | release_and_free_resource(au1000->ac97_res_port); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 614 | } |
| 615 | |
Sergei Shtylyov | bb160b8 | 2006-03-21 11:58:48 +0100 | [diff] [blame] | 616 | if (au1000->stream[PLAYBACK]) { |
| 617 | if (au1000->stream[PLAYBACK]->dma >= 0) |
| 618 | free_au1000_dma(au1000->stream[PLAYBACK]->dma); |
| 619 | kfree(au1000->stream[PLAYBACK]); |
| 620 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 621 | |
Sergei Shtylyov | bb160b8 | 2006-03-21 11:58:48 +0100 | [diff] [blame] | 622 | if (au1000->stream[CAPTURE]) { |
| 623 | if (au1000->stream[CAPTURE]->dma >= 0) |
| 624 | free_au1000_dma(au1000->stream[CAPTURE]->dma); |
| 625 | kfree(au1000->stream[CAPTURE]); |
| 626 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 627 | } |
| 628 | |
Takashi Iwai | 33ea25c | 2005-11-17 10:32:43 +0100 | [diff] [blame] | 629 | |
Takashi Iwai | a0d6f88 | 2005-11-17 15:12:31 +0100 | [diff] [blame] | 630 | static struct snd_card *au1000_card; |
Takashi Iwai | 33ea25c | 2005-11-17 10:32:43 +0100 | [diff] [blame] | 631 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 632 | static int __init |
| 633 | au1000_init(void) |
| 634 | { |
| 635 | int err; |
Takashi Iwai | a0d6f88 | 2005-11-17 15:12:31 +0100 | [diff] [blame] | 636 | struct snd_card *card; |
| 637 | struct snd_au1000 *au1000; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 638 | |
Takashi Iwai | a0d6f88 | 2005-11-17 15:12:31 +0100 | [diff] [blame] | 639 | card = snd_card_new(-1, "AC97", THIS_MODULE, sizeof(struct snd_au1000)); |
Takashi Iwai | 33ea25c | 2005-11-17 10:32:43 +0100 | [diff] [blame] | 640 | if (card == NULL) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 641 | return -ENOMEM; |
Takashi Iwai | 33ea25c | 2005-11-17 10:32:43 +0100 | [diff] [blame] | 642 | |
| 643 | card->private_free = snd_au1000_free; |
| 644 | au1000 = card->private_data; |
Takashi Iwai | 33ea25c | 2005-11-17 10:32:43 +0100 | [diff] [blame] | 645 | au1000->card = card; |
Sergei Shtylyov | bb160b8 | 2006-03-21 11:58:48 +0100 | [diff] [blame] | 646 | |
Takashi Iwai | a0d6f88 | 2005-11-17 15:12:31 +0100 | [diff] [blame] | 647 | au1000->stream[PLAYBACK] = kmalloc(sizeof(struct audio_stream), GFP_KERNEL); |
Sergei Shtylyov | bb160b8 | 2006-03-21 11:58:48 +0100 | [diff] [blame] | 648 | au1000->stream[CAPTURE ] = kmalloc(sizeof(struct audio_stream), GFP_KERNEL); |
| 649 | /* so that snd_au1000_free will work as intended */ |
| 650 | au1000->ac97_res_port = NULL; |
| 651 | if (au1000->stream[PLAYBACK]) |
| 652 | au1000->stream[PLAYBACK]->dma = -1; |
| 653 | if (au1000->stream[CAPTURE ]) |
| 654 | au1000->stream[CAPTURE ]->dma = -1; |
| 655 | |
Takashi Iwai | 33ea25c | 2005-11-17 10:32:43 +0100 | [diff] [blame] | 656 | if (au1000->stream[PLAYBACK] == NULL || |
Sergei Shtylyov | bb160b8 | 2006-03-21 11:58:48 +0100 | [diff] [blame] | 657 | au1000->stream[CAPTURE ] == NULL) { |
Takashi Iwai | 33ea25c | 2005-11-17 10:32:43 +0100 | [diff] [blame] | 658 | snd_card_free(card); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 659 | return -ENOMEM; |
| 660 | } |
| 661 | |
Takashi Iwai | 33ea25c | 2005-11-17 10:32:43 +0100 | [diff] [blame] | 662 | if ((err = snd_au1000_ac97_new(au1000)) < 0 ) { |
| 663 | snd_card_free(card); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 664 | return err; |
| 665 | } |
| 666 | |
Takashi Iwai | 33ea25c | 2005-11-17 10:32:43 +0100 | [diff] [blame] | 667 | if ((err = snd_au1000_pcm_new(au1000)) < 0) { |
| 668 | snd_card_free(card); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 669 | return err; |
| 670 | } |
| 671 | |
Takashi Iwai | 33ea25c | 2005-11-17 10:32:43 +0100 | [diff] [blame] | 672 | strcpy(card->driver, "Au1000-AC97"); |
| 673 | strcpy(card->shortname, "AMD Au1000-AC97"); |
| 674 | sprintf(card->longname, "AMD Au1000--AC97 ALSA Driver"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 675 | |
Takashi Iwai | 33ea25c | 2005-11-17 10:32:43 +0100 | [diff] [blame] | 676 | if ((err = snd_card_register(card)) < 0) { |
| 677 | snd_card_free(card); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 678 | return err; |
| 679 | } |
| 680 | |
| 681 | printk( KERN_INFO "ALSA AC97: Driver Initialized\n" ); |
Takashi Iwai | 33ea25c | 2005-11-17 10:32:43 +0100 | [diff] [blame] | 682 | au1000_card = card; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 683 | return 0; |
| 684 | } |
| 685 | |
| 686 | static void __exit au1000_exit(void) |
| 687 | { |
Takashi Iwai | 33ea25c | 2005-11-17 10:32:43 +0100 | [diff] [blame] | 688 | snd_card_free(au1000_card); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 689 | } |
| 690 | |
| 691 | module_init(au1000_init); |
| 692 | module_exit(au1000_exit); |
| 693 | |