Adrian McMenamin | 198de43 | 2007-05-18 14:26:59 +0200 | [diff] [blame] | 1 | /* |
| 2 | * This code is licenced under |
| 3 | * the General Public Licence |
| 4 | * version 2 |
| 5 | * |
| 6 | * Copyright Adrian McMenamin 2005, 2006, 2007 |
| 7 | * <adrian@mcmen.demon.co.uk> |
| 8 | * Requires firmware (BSD licenced) available from: |
| 9 | * http://linuxdc.cvs.sourceforge.net/linuxdc/linux-sh-dc/sound/oss/aica/firmware/ |
| 10 | * or the maintainer |
| 11 | * |
| 12 | * This program is free software; you can redistribute it and/or modify |
| 13 | * it under the terms of version 2 of the GNU General Public License as published by |
| 14 | * the Free Software Foundation. |
| 15 | * |
| 16 | * This program is distributed in the hope that it will be useful, |
| 17 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 18 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 19 | * GNU General Public License for more details. |
| 20 | * |
| 21 | * You should have received a copy of the GNU General Public License |
| 22 | * along with this program; if not, write to the Free Software |
| 23 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| 24 | * |
| 25 | */ |
| 26 | |
| 27 | #include <linux/init.h> |
| 28 | #include <linux/jiffies.h> |
| 29 | #include <linux/slab.h> |
| 30 | #include <linux/time.h> |
| 31 | #include <linux/wait.h> |
| 32 | #include <linux/moduleparam.h> |
| 33 | #include <linux/platform_device.h> |
| 34 | #include <linux/firmware.h> |
| 35 | #include <linux/timer.h> |
| 36 | #include <linux/delay.h> |
| 37 | #include <linux/workqueue.h> |
Adrian McMenamin | 198de43 | 2007-05-18 14:26:59 +0200 | [diff] [blame] | 38 | #include <sound/core.h> |
| 39 | #include <sound/control.h> |
| 40 | #include <sound/pcm.h> |
| 41 | #include <sound/initval.h> |
| 42 | #include <sound/info.h> |
| 43 | #include <asm/io.h> |
| 44 | #include <asm/dma.h> |
Paul Mundt | f15cbe6 | 2008-07-29 08:09:44 +0900 | [diff] [blame] | 45 | #include <mach/sysasic.h> |
Adrian McMenamin | 198de43 | 2007-05-18 14:26:59 +0200 | [diff] [blame] | 46 | #include "aica.h" |
| 47 | |
| 48 | MODULE_AUTHOR("Adrian McMenamin <adrian@mcmen.demon.co.uk>"); |
| 49 | MODULE_DESCRIPTION("Dreamcast AICA sound (pcm) driver"); |
| 50 | MODULE_LICENSE("GPL"); |
| 51 | MODULE_SUPPORTED_DEVICE("{{Yamaha/SEGA, AICA}}"); |
| 52 | |
| 53 | /* module parameters */ |
| 54 | #define CARD_NAME "AICA" |
| 55 | static int index = -1; |
| 56 | static char *id; |
| 57 | static int enable = 1; |
| 58 | module_param(index, int, 0444); |
| 59 | MODULE_PARM_DESC(index, "Index value for " CARD_NAME " soundcard."); |
| 60 | module_param(id, charp, 0444); |
| 61 | MODULE_PARM_DESC(id, "ID string for " CARD_NAME " soundcard."); |
| 62 | module_param(enable, bool, 0644); |
| 63 | MODULE_PARM_DESC(enable, "Enable " CARD_NAME " soundcard."); |
| 64 | |
| 65 | /* Use workqueue */ |
Adrian McMenamin | 198de43 | 2007-05-18 14:26:59 +0200 | [diff] [blame] | 66 | static struct workqueue_struct *aica_queue; |
| 67 | |
| 68 | /* Simple platform device */ |
| 69 | static struct platform_device *pd; |
| 70 | static struct resource aica_memory_space[2] = { |
| 71 | { |
| 72 | .name = "AICA ARM CONTROL", |
| 73 | .start = ARM_RESET_REGISTER, |
| 74 | .flags = IORESOURCE_MEM, |
| 75 | .end = ARM_RESET_REGISTER + 3, |
| 76 | }, |
| 77 | { |
| 78 | .name = "AICA Sound RAM", |
| 79 | .start = SPU_MEMORY_BASE, |
| 80 | .flags = IORESOURCE_MEM, |
| 81 | .end = SPU_MEMORY_BASE + 0x200000 - 1, |
| 82 | }, |
| 83 | }; |
| 84 | |
| 85 | /* SPU specific functions */ |
| 86 | /* spu_write_wait - wait for G2-SH FIFO to clear */ |
| 87 | static void spu_write_wait(void) |
| 88 | { |
| 89 | int time_count; |
| 90 | time_count = 0; |
| 91 | while (1) { |
| 92 | if (!(readl(G2_FIFO) & 0x11)) |
| 93 | break; |
| 94 | /* To ensure hardware failure doesn't wedge kernel */ |
| 95 | time_count++; |
Takashi Iwai | d20b9b2 | 2007-07-09 10:36:22 +0200 | [diff] [blame] | 96 | if (time_count > 0x10000) { |
| 97 | snd_printk |
| 98 | ("WARNING: G2 FIFO appears to be blocked.\n"); |
Adrian McMenamin | 198de43 | 2007-05-18 14:26:59 +0200 | [diff] [blame] | 99 | break; |
| 100 | } |
| 101 | } |
| 102 | } |
| 103 | |
| 104 | /* spu_memset - write to memory in SPU address space */ |
| 105 | static void spu_memset(u32 toi, u32 what, int length) |
| 106 | { |
| 107 | int i; |
Adrian McMenamin | 44e0b68 | 2007-10-18 10:46:59 +0200 | [diff] [blame] | 108 | unsigned long flags; |
Takashi Iwai | 5e246b8 | 2008-08-08 17:12:47 +0200 | [diff] [blame] | 109 | if (snd_BUG_ON(length % 4)) |
| 110 | return; |
Adrian McMenamin | 198de43 | 2007-05-18 14:26:59 +0200 | [diff] [blame] | 111 | for (i = 0; i < length; i++) { |
| 112 | if (!(i % 8)) |
| 113 | spu_write_wait(); |
Adrian McMenamin | 44e0b68 | 2007-10-18 10:46:59 +0200 | [diff] [blame] | 114 | local_irq_save(flags); |
Adrian McMenamin | 198de43 | 2007-05-18 14:26:59 +0200 | [diff] [blame] | 115 | writel(what, toi + SPU_MEMORY_BASE); |
Adrian McMenamin | 44e0b68 | 2007-10-18 10:46:59 +0200 | [diff] [blame] | 116 | local_irq_restore(flags); |
Adrian McMenamin | 198de43 | 2007-05-18 14:26:59 +0200 | [diff] [blame] | 117 | toi++; |
| 118 | } |
| 119 | } |
| 120 | |
| 121 | /* spu_memload - write to SPU address space */ |
| 122 | static void spu_memload(u32 toi, void *from, int length) |
| 123 | { |
Adrian McMenamin | 44e0b68 | 2007-10-18 10:46:59 +0200 | [diff] [blame] | 124 | unsigned long flags; |
Adrian McMenamin | 198de43 | 2007-05-18 14:26:59 +0200 | [diff] [blame] | 125 | u32 *froml = from; |
| 126 | u32 __iomem *to = (u32 __iomem *) (SPU_MEMORY_BASE + toi); |
| 127 | int i; |
| 128 | u32 val; |
| 129 | length = DIV_ROUND_UP(length, 4); |
| 130 | spu_write_wait(); |
| 131 | for (i = 0; i < length; i++) { |
| 132 | if (!(i % 8)) |
| 133 | spu_write_wait(); |
| 134 | val = *froml; |
Adrian McMenamin | 44e0b68 | 2007-10-18 10:46:59 +0200 | [diff] [blame] | 135 | local_irq_save(flags); |
Adrian McMenamin | 198de43 | 2007-05-18 14:26:59 +0200 | [diff] [blame] | 136 | writel(val, to); |
Adrian McMenamin | 44e0b68 | 2007-10-18 10:46:59 +0200 | [diff] [blame] | 137 | local_irq_restore(flags); |
Adrian McMenamin | 198de43 | 2007-05-18 14:26:59 +0200 | [diff] [blame] | 138 | froml++; |
| 139 | to++; |
| 140 | } |
| 141 | } |
| 142 | |
| 143 | /* spu_disable - set spu registers to stop sound output */ |
| 144 | static void spu_disable(void) |
| 145 | { |
| 146 | int i; |
Adrian McMenamin | 44e0b68 | 2007-10-18 10:46:59 +0200 | [diff] [blame] | 147 | unsigned long flags; |
Adrian McMenamin | 198de43 | 2007-05-18 14:26:59 +0200 | [diff] [blame] | 148 | u32 regval; |
| 149 | spu_write_wait(); |
| 150 | regval = readl(ARM_RESET_REGISTER); |
| 151 | regval |= 1; |
| 152 | spu_write_wait(); |
Adrian McMenamin | 44e0b68 | 2007-10-18 10:46:59 +0200 | [diff] [blame] | 153 | local_irq_save(flags); |
Adrian McMenamin | 198de43 | 2007-05-18 14:26:59 +0200 | [diff] [blame] | 154 | writel(regval, ARM_RESET_REGISTER); |
Adrian McMenamin | 44e0b68 | 2007-10-18 10:46:59 +0200 | [diff] [blame] | 155 | local_irq_restore(flags); |
Adrian McMenamin | 198de43 | 2007-05-18 14:26:59 +0200 | [diff] [blame] | 156 | for (i = 0; i < 64; i++) { |
| 157 | spu_write_wait(); |
| 158 | regval = readl(SPU_REGISTER_BASE + (i * 0x80)); |
| 159 | regval = (regval & ~0x4000) | 0x8000; |
| 160 | spu_write_wait(); |
Adrian McMenamin | 44e0b68 | 2007-10-18 10:46:59 +0200 | [diff] [blame] | 161 | local_irq_save(flags); |
Adrian McMenamin | 198de43 | 2007-05-18 14:26:59 +0200 | [diff] [blame] | 162 | writel(regval, SPU_REGISTER_BASE + (i * 0x80)); |
Adrian McMenamin | 44e0b68 | 2007-10-18 10:46:59 +0200 | [diff] [blame] | 163 | local_irq_restore(flags); |
Adrian McMenamin | 198de43 | 2007-05-18 14:26:59 +0200 | [diff] [blame] | 164 | } |
| 165 | } |
| 166 | |
| 167 | /* spu_enable - set spu registers to enable sound output */ |
| 168 | static void spu_enable(void) |
| 169 | { |
Adrian McMenamin | 44e0b68 | 2007-10-18 10:46:59 +0200 | [diff] [blame] | 170 | unsigned long flags; |
Adrian McMenamin | 198de43 | 2007-05-18 14:26:59 +0200 | [diff] [blame] | 171 | u32 regval = readl(ARM_RESET_REGISTER); |
| 172 | regval &= ~1; |
| 173 | spu_write_wait(); |
Adrian McMenamin | 44e0b68 | 2007-10-18 10:46:59 +0200 | [diff] [blame] | 174 | local_irq_save(flags); |
Adrian McMenamin | 198de43 | 2007-05-18 14:26:59 +0200 | [diff] [blame] | 175 | writel(regval, ARM_RESET_REGISTER); |
Adrian McMenamin | 44e0b68 | 2007-10-18 10:46:59 +0200 | [diff] [blame] | 176 | local_irq_restore(flags); |
Adrian McMenamin | 198de43 | 2007-05-18 14:26:59 +0200 | [diff] [blame] | 177 | } |
| 178 | |
| 179 | /* |
| 180 | * Halt the sound processor, clear the memory, |
| 181 | * load some default ARM7 code, and then restart ARM7 |
| 182 | */ |
| 183 | static void spu_reset(void) |
| 184 | { |
Adrian McMenamin | 44e0b68 | 2007-10-18 10:46:59 +0200 | [diff] [blame] | 185 | unsigned long flags; |
Adrian McMenamin | 198de43 | 2007-05-18 14:26:59 +0200 | [diff] [blame] | 186 | spu_disable(); |
| 187 | spu_memset(0, 0, 0x200000 / 4); |
| 188 | /* Put ARM7 in endless loop */ |
Adrian McMenamin | 44e0b68 | 2007-10-18 10:46:59 +0200 | [diff] [blame] | 189 | local_irq_save(flags); |
Adrian McMenamin | 198de43 | 2007-05-18 14:26:59 +0200 | [diff] [blame] | 190 | ctrl_outl(0xea000002, SPU_MEMORY_BASE); |
Adrian McMenamin | 44e0b68 | 2007-10-18 10:46:59 +0200 | [diff] [blame] | 191 | local_irq_restore(flags); |
Adrian McMenamin | 198de43 | 2007-05-18 14:26:59 +0200 | [diff] [blame] | 192 | spu_enable(); |
| 193 | } |
| 194 | |
| 195 | /* aica_chn_start - write to spu to start playback */ |
| 196 | static void aica_chn_start(void) |
| 197 | { |
Adrian McMenamin | 44e0b68 | 2007-10-18 10:46:59 +0200 | [diff] [blame] | 198 | unsigned long flags; |
Adrian McMenamin | 198de43 | 2007-05-18 14:26:59 +0200 | [diff] [blame] | 199 | spu_write_wait(); |
Adrian McMenamin | 44e0b68 | 2007-10-18 10:46:59 +0200 | [diff] [blame] | 200 | local_irq_save(flags); |
Adrian McMenamin | 198de43 | 2007-05-18 14:26:59 +0200 | [diff] [blame] | 201 | writel(AICA_CMD_KICK | AICA_CMD_START, (u32 *) AICA_CONTROL_POINT); |
Adrian McMenamin | 44e0b68 | 2007-10-18 10:46:59 +0200 | [diff] [blame] | 202 | local_irq_restore(flags); |
Adrian McMenamin | 198de43 | 2007-05-18 14:26:59 +0200 | [diff] [blame] | 203 | } |
| 204 | |
| 205 | /* aica_chn_halt - write to spu to halt playback */ |
| 206 | static void aica_chn_halt(void) |
| 207 | { |
Adrian McMenamin | 44e0b68 | 2007-10-18 10:46:59 +0200 | [diff] [blame] | 208 | unsigned long flags; |
Adrian McMenamin | 198de43 | 2007-05-18 14:26:59 +0200 | [diff] [blame] | 209 | spu_write_wait(); |
Adrian McMenamin | 44e0b68 | 2007-10-18 10:46:59 +0200 | [diff] [blame] | 210 | local_irq_save(flags); |
Adrian McMenamin | 198de43 | 2007-05-18 14:26:59 +0200 | [diff] [blame] | 211 | writel(AICA_CMD_KICK | AICA_CMD_STOP, (u32 *) AICA_CONTROL_POINT); |
Adrian McMenamin | 44e0b68 | 2007-10-18 10:46:59 +0200 | [diff] [blame] | 212 | local_irq_restore(flags); |
Adrian McMenamin | 198de43 | 2007-05-18 14:26:59 +0200 | [diff] [blame] | 213 | } |
| 214 | |
| 215 | /* ALSA code below */ |
| 216 | static struct snd_pcm_hardware snd_pcm_aica_playback_hw = { |
| 217 | .info = (SNDRV_PCM_INFO_NONINTERLEAVED), |
| 218 | .formats = |
| 219 | (SNDRV_PCM_FMTBIT_S8 | SNDRV_PCM_FMTBIT_S16_LE | |
| 220 | SNDRV_PCM_FMTBIT_IMA_ADPCM), |
| 221 | .rates = SNDRV_PCM_RATE_8000_48000, |
| 222 | .rate_min = 8000, |
| 223 | .rate_max = 48000, |
| 224 | .channels_min = 1, |
| 225 | .channels_max = 2, |
| 226 | .buffer_bytes_max = AICA_BUFFER_SIZE, |
| 227 | .period_bytes_min = AICA_PERIOD_SIZE, |
| 228 | .period_bytes_max = AICA_PERIOD_SIZE, |
| 229 | .periods_min = AICA_PERIOD_NUMBER, |
| 230 | .periods_max = AICA_PERIOD_NUMBER, |
| 231 | }; |
| 232 | |
| 233 | static int aica_dma_transfer(int channels, int buffer_size, |
| 234 | struct snd_pcm_substream *substream) |
| 235 | { |
| 236 | int q, err, period_offset; |
| 237 | struct snd_card_aica *dreamcastcard; |
| 238 | struct snd_pcm_runtime *runtime; |
Adrian McMenamin | 44e0b68 | 2007-10-18 10:46:59 +0200 | [diff] [blame] | 239 | unsigned long flags; |
Takashi Iwai | ceac4bf | 2007-10-29 10:49:43 +0100 | [diff] [blame] | 240 | err = 0; |
Adrian McMenamin | 198de43 | 2007-05-18 14:26:59 +0200 | [diff] [blame] | 241 | dreamcastcard = substream->pcm->private_data; |
| 242 | period_offset = dreamcastcard->clicks; |
| 243 | period_offset %= (AICA_PERIOD_NUMBER / channels); |
| 244 | runtime = substream->runtime; |
| 245 | for (q = 0; q < channels; q++) { |
Adrian McMenamin | 44e0b68 | 2007-10-18 10:46:59 +0200 | [diff] [blame] | 246 | local_irq_save(flags); |
Adrian McMenamin | 198de43 | 2007-05-18 14:26:59 +0200 | [diff] [blame] | 247 | err = dma_xfer(AICA_DMA_CHANNEL, |
Takashi Iwai | d20b9b2 | 2007-07-09 10:36:22 +0200 | [diff] [blame] | 248 | (unsigned long) (runtime->dma_area + |
| 249 | (AICA_BUFFER_SIZE * q) / |
| 250 | channels + |
| 251 | AICA_PERIOD_SIZE * |
| 252 | period_offset), |
Adrian McMenamin | 198de43 | 2007-05-18 14:26:59 +0200 | [diff] [blame] | 253 | AICA_CHANNEL0_OFFSET + q * CHANNEL_OFFSET + |
| 254 | AICA_PERIOD_SIZE * period_offset, |
| 255 | buffer_size / channels, AICA_DMA_MODE); |
Adrian McMenamin | 44e0b68 | 2007-10-18 10:46:59 +0200 | [diff] [blame] | 256 | if (unlikely(err < 0)) { |
| 257 | local_irq_restore(flags); |
Adrian McMenamin | 198de43 | 2007-05-18 14:26:59 +0200 | [diff] [blame] | 258 | break; |
Adrian McMenamin | 44e0b68 | 2007-10-18 10:46:59 +0200 | [diff] [blame] | 259 | } |
Adrian McMenamin | 198de43 | 2007-05-18 14:26:59 +0200 | [diff] [blame] | 260 | dma_wait_for_completion(AICA_DMA_CHANNEL); |
Adrian McMenamin | 44e0b68 | 2007-10-18 10:46:59 +0200 | [diff] [blame] | 261 | local_irq_restore(flags); |
Adrian McMenamin | 198de43 | 2007-05-18 14:26:59 +0200 | [diff] [blame] | 262 | } |
| 263 | return err; |
| 264 | } |
| 265 | |
| 266 | static void startup_aica(struct snd_card_aica *dreamcastcard) |
| 267 | { |
| 268 | spu_memload(AICA_CHANNEL0_CONTROL_OFFSET, |
Takashi Iwai | d20b9b2 | 2007-07-09 10:36:22 +0200 | [diff] [blame] | 269 | dreamcastcard->channel, sizeof(struct aica_channel)); |
Adrian McMenamin | 198de43 | 2007-05-18 14:26:59 +0200 | [diff] [blame] | 270 | aica_chn_start(); |
| 271 | } |
| 272 | |
| 273 | static void run_spu_dma(struct work_struct *work) |
| 274 | { |
| 275 | int buffer_size; |
Adrian McMenamin | 198de43 | 2007-05-18 14:26:59 +0200 | [diff] [blame] | 276 | struct snd_pcm_runtime *runtime; |
| 277 | struct snd_card_aica *dreamcastcard; |
Takashi Iwai | d20b9b2 | 2007-07-09 10:36:22 +0200 | [diff] [blame] | 278 | dreamcastcard = |
| 279 | container_of(work, struct snd_card_aica, spu_dma_work); |
| 280 | runtime = dreamcastcard->substream->runtime; |
Adrian McMenamin | 198de43 | 2007-05-18 14:26:59 +0200 | [diff] [blame] | 281 | if (unlikely(dreamcastcard->dma_check == 0)) { |
Takashi Iwai | d20b9b2 | 2007-07-09 10:36:22 +0200 | [diff] [blame] | 282 | buffer_size = |
| 283 | frames_to_bytes(runtime, runtime->buffer_size); |
Adrian McMenamin | 198de43 | 2007-05-18 14:26:59 +0200 | [diff] [blame] | 284 | if (runtime->channels > 1) |
| 285 | dreamcastcard->channel->flags |= 0x01; |
Takashi Iwai | d20b9b2 | 2007-07-09 10:36:22 +0200 | [diff] [blame] | 286 | aica_dma_transfer(runtime->channels, buffer_size, |
| 287 | dreamcastcard->substream); |
Adrian McMenamin | 198de43 | 2007-05-18 14:26:59 +0200 | [diff] [blame] | 288 | startup_aica(dreamcastcard); |
| 289 | dreamcastcard->clicks = |
| 290 | buffer_size / (AICA_PERIOD_SIZE * runtime->channels); |
| 291 | return; |
| 292 | } else { |
| 293 | aica_dma_transfer(runtime->channels, |
| 294 | AICA_PERIOD_SIZE * runtime->channels, |
Takashi Iwai | d20b9b2 | 2007-07-09 10:36:22 +0200 | [diff] [blame] | 295 | dreamcastcard->substream); |
Adrian McMenamin | 198de43 | 2007-05-18 14:26:59 +0200 | [diff] [blame] | 296 | snd_pcm_period_elapsed(dreamcastcard->substream); |
| 297 | dreamcastcard->clicks++; |
| 298 | if (unlikely(dreamcastcard->clicks >= AICA_PERIOD_NUMBER)) |
Adrian McMenamin | 198de43 | 2007-05-18 14:26:59 +0200 | [diff] [blame] | 299 | dreamcastcard->clicks %= AICA_PERIOD_NUMBER; |
Adrian McMenamin | 198de43 | 2007-05-18 14:26:59 +0200 | [diff] [blame] | 300 | mod_timer(&dreamcastcard->timer, jiffies + 1); |
| 301 | } |
| 302 | } |
| 303 | |
| 304 | static void aica_period_elapsed(unsigned long timer_var) |
| 305 | { |
| 306 | /*timer function - so cannot sleep */ |
| 307 | int play_period; |
| 308 | struct snd_pcm_runtime *runtime; |
| 309 | struct snd_pcm_substream *substream; |
| 310 | struct snd_card_aica *dreamcastcard; |
Takashi Iwai | d20b9b2 | 2007-07-09 10:36:22 +0200 | [diff] [blame] | 311 | substream = (struct snd_pcm_substream *) timer_var; |
Adrian McMenamin | 198de43 | 2007-05-18 14:26:59 +0200 | [diff] [blame] | 312 | runtime = substream->runtime; |
| 313 | dreamcastcard = substream->pcm->private_data; |
| 314 | /* Have we played out an additional period? */ |
| 315 | play_period = |
| 316 | frames_to_bytes(runtime, |
| 317 | readl |
| 318 | (AICA_CONTROL_CHANNEL_SAMPLE_NUMBER)) / |
| 319 | AICA_PERIOD_SIZE; |
| 320 | if (play_period == dreamcastcard->current_period) { |
| 321 | /* reschedule the timer */ |
| 322 | mod_timer(&(dreamcastcard->timer), jiffies + 1); |
| 323 | return; |
| 324 | } |
| 325 | if (runtime->channels > 1) |
| 326 | dreamcastcard->current_period = play_period; |
| 327 | if (unlikely(dreamcastcard->dma_check == 0)) |
| 328 | dreamcastcard->dma_check = 1; |
Takashi Iwai | d20b9b2 | 2007-07-09 10:36:22 +0200 | [diff] [blame] | 329 | queue_work(aica_queue, &(dreamcastcard->spu_dma_work)); |
Adrian McMenamin | 198de43 | 2007-05-18 14:26:59 +0200 | [diff] [blame] | 330 | } |
| 331 | |
| 332 | static void spu_begin_dma(struct snd_pcm_substream *substream) |
| 333 | { |
Adrian McMenamin | 198de43 | 2007-05-18 14:26:59 +0200 | [diff] [blame] | 334 | struct snd_card_aica *dreamcastcard; |
| 335 | struct snd_pcm_runtime *runtime; |
| 336 | runtime = substream->runtime; |
| 337 | dreamcastcard = substream->pcm->private_data; |
Takashi Iwai | d20b9b2 | 2007-07-09 10:36:22 +0200 | [diff] [blame] | 338 | /*get the queue to do the work */ |
| 339 | queue_work(aica_queue, &(dreamcastcard->spu_dma_work)); |
Adrian McMenamin | 198de43 | 2007-05-18 14:26:59 +0200 | [diff] [blame] | 340 | /* Timer may already be running */ |
| 341 | if (unlikely(dreamcastcard->timer.data)) { |
| 342 | mod_timer(&dreamcastcard->timer, jiffies + 4); |
| 343 | return; |
| 344 | } |
| 345 | init_timer(&(dreamcastcard->timer)); |
Takashi Iwai | d20b9b2 | 2007-07-09 10:36:22 +0200 | [diff] [blame] | 346 | dreamcastcard->timer.data = (unsigned long) substream; |
Adrian McMenamin | 198de43 | 2007-05-18 14:26:59 +0200 | [diff] [blame] | 347 | dreamcastcard->timer.function = aica_period_elapsed; |
| 348 | dreamcastcard->timer.expires = jiffies + 4; |
| 349 | add_timer(&(dreamcastcard->timer)); |
| 350 | } |
| 351 | |
| 352 | static int snd_aicapcm_pcm_open(struct snd_pcm_substream |
| 353 | *substream) |
| 354 | { |
| 355 | struct snd_pcm_runtime *runtime; |
| 356 | struct aica_channel *channel; |
| 357 | struct snd_card_aica *dreamcastcard; |
| 358 | if (!enable) |
| 359 | return -ENOENT; |
| 360 | dreamcastcard = substream->pcm->private_data; |
| 361 | channel = kmalloc(sizeof(struct aica_channel), GFP_KERNEL); |
| 362 | if (!channel) |
| 363 | return -ENOMEM; |
| 364 | /* set defaults for channel */ |
| 365 | channel->sfmt = SM_8BIT; |
| 366 | channel->cmd = AICA_CMD_START; |
| 367 | channel->vol = dreamcastcard->master_volume; |
| 368 | channel->pan = 0x80; |
| 369 | channel->pos = 0; |
| 370 | channel->flags = 0; /* default to mono */ |
| 371 | dreamcastcard->channel = channel; |
| 372 | runtime = substream->runtime; |
| 373 | runtime->hw = snd_pcm_aica_playback_hw; |
| 374 | spu_enable(); |
| 375 | dreamcastcard->clicks = 0; |
| 376 | dreamcastcard->current_period = 0; |
| 377 | dreamcastcard->dma_check = 0; |
| 378 | return 0; |
| 379 | } |
| 380 | |
| 381 | static int snd_aicapcm_pcm_close(struct snd_pcm_substream |
| 382 | *substream) |
| 383 | { |
| 384 | struct snd_card_aica *dreamcastcard = substream->pcm->private_data; |
Takashi Iwai | d20b9b2 | 2007-07-09 10:36:22 +0200 | [diff] [blame] | 385 | flush_workqueue(aica_queue); |
| 386 | if (dreamcastcard->timer.data) |
| 387 | del_timer(&dreamcastcard->timer); |
Adrian McMenamin | 198de43 | 2007-05-18 14:26:59 +0200 | [diff] [blame] | 388 | kfree(dreamcastcard->channel); |
| 389 | spu_disable(); |
| 390 | return 0; |
| 391 | } |
| 392 | |
| 393 | static int snd_aicapcm_pcm_hw_free(struct snd_pcm_substream |
| 394 | *substream) |
| 395 | { |
| 396 | /* Free the DMA buffer */ |
| 397 | return snd_pcm_lib_free_pages(substream); |
| 398 | } |
| 399 | |
| 400 | static int snd_aicapcm_pcm_hw_params(struct snd_pcm_substream |
| 401 | *substream, struct snd_pcm_hw_params |
| 402 | *hw_params) |
| 403 | { |
| 404 | /* Allocate a DMA buffer using ALSA built-ins */ |
| 405 | return |
Takashi Iwai | d20b9b2 | 2007-07-09 10:36:22 +0200 | [diff] [blame] | 406 | snd_pcm_lib_malloc_pages(substream, |
| 407 | params_buffer_bytes(hw_params)); |
Adrian McMenamin | 198de43 | 2007-05-18 14:26:59 +0200 | [diff] [blame] | 408 | } |
| 409 | |
| 410 | static int snd_aicapcm_pcm_prepare(struct snd_pcm_substream |
| 411 | *substream) |
| 412 | { |
| 413 | struct snd_card_aica *dreamcastcard = substream->pcm->private_data; |
| 414 | if ((substream->runtime)->format == SNDRV_PCM_FORMAT_S16_LE) |
| 415 | dreamcastcard->channel->sfmt = SM_16BIT; |
| 416 | dreamcastcard->channel->freq = substream->runtime->rate; |
| 417 | dreamcastcard->substream = substream; |
| 418 | return 0; |
| 419 | } |
| 420 | |
| 421 | static int snd_aicapcm_pcm_trigger(struct snd_pcm_substream |
| 422 | *substream, int cmd) |
| 423 | { |
Adrian McMenamin | 198de43 | 2007-05-18 14:26:59 +0200 | [diff] [blame] | 424 | switch (cmd) { |
| 425 | case SNDRV_PCM_TRIGGER_START: |
| 426 | spu_begin_dma(substream); |
| 427 | break; |
| 428 | case SNDRV_PCM_TRIGGER_STOP: |
Adrian McMenamin | 198de43 | 2007-05-18 14:26:59 +0200 | [diff] [blame] | 429 | aica_chn_halt(); |
| 430 | break; |
| 431 | default: |
| 432 | return -EINVAL; |
| 433 | } |
| 434 | return 0; |
| 435 | } |
| 436 | |
| 437 | static unsigned long snd_aicapcm_pcm_pointer(struct snd_pcm_substream |
| 438 | *substream) |
| 439 | { |
| 440 | return readl(AICA_CONTROL_CHANNEL_SAMPLE_NUMBER); |
| 441 | } |
| 442 | |
| 443 | static struct snd_pcm_ops snd_aicapcm_playback_ops = { |
| 444 | .open = snd_aicapcm_pcm_open, |
| 445 | .close = snd_aicapcm_pcm_close, |
| 446 | .ioctl = snd_pcm_lib_ioctl, |
| 447 | .hw_params = snd_aicapcm_pcm_hw_params, |
| 448 | .hw_free = snd_aicapcm_pcm_hw_free, |
| 449 | .prepare = snd_aicapcm_pcm_prepare, |
| 450 | .trigger = snd_aicapcm_pcm_trigger, |
| 451 | .pointer = snd_aicapcm_pcm_pointer, |
| 452 | }; |
| 453 | |
| 454 | /* TO DO: set up to handle more than one pcm instance */ |
| 455 | static int __init snd_aicapcmchip(struct snd_card_aica |
| 456 | *dreamcastcard, int pcm_index) |
| 457 | { |
| 458 | struct snd_pcm *pcm; |
| 459 | int err; |
| 460 | /* AICA has no capture ability */ |
| 461 | err = |
Takashi Iwai | d20b9b2 | 2007-07-09 10:36:22 +0200 | [diff] [blame] | 462 | snd_pcm_new(dreamcastcard->card, "AICA PCM", pcm_index, 1, 0, |
| 463 | &pcm); |
Adrian McMenamin | 198de43 | 2007-05-18 14:26:59 +0200 | [diff] [blame] | 464 | if (unlikely(err < 0)) |
| 465 | return err; |
| 466 | pcm->private_data = dreamcastcard; |
| 467 | strcpy(pcm->name, "AICA PCM"); |
| 468 | snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, |
| 469 | &snd_aicapcm_playback_ops); |
| 470 | /* Allocate the DMA buffers */ |
| 471 | err = |
| 472 | snd_pcm_lib_preallocate_pages_for_all(pcm, |
| 473 | SNDRV_DMA_TYPE_CONTINUOUS, |
| 474 | snd_dma_continuous_data |
| 475 | (GFP_KERNEL), |
| 476 | AICA_BUFFER_SIZE, |
| 477 | AICA_BUFFER_SIZE); |
| 478 | return err; |
| 479 | } |
| 480 | |
| 481 | /* Mixer controls */ |
Takashi Iwai | a5ce889 | 2007-07-23 15:42:26 +0200 | [diff] [blame] | 482 | #define aica_pcmswitch_info snd_ctl_boolean_mono_info |
Adrian McMenamin | 198de43 | 2007-05-18 14:26:59 +0200 | [diff] [blame] | 483 | |
| 484 | static int aica_pcmswitch_get(struct snd_kcontrol *kcontrol, |
| 485 | struct snd_ctl_elem_value *ucontrol) |
| 486 | { |
| 487 | ucontrol->value.integer.value[0] = 1; /* TO DO: Fix me */ |
| 488 | return 0; |
| 489 | } |
| 490 | |
| 491 | static int aica_pcmswitch_put(struct snd_kcontrol *kcontrol, |
| 492 | struct snd_ctl_elem_value *ucontrol) |
| 493 | { |
| 494 | if (ucontrol->value.integer.value[0] == 1) |
| 495 | return 0; /* TO DO: Fix me */ |
| 496 | else |
| 497 | aica_chn_halt(); |
| 498 | return 0; |
| 499 | } |
| 500 | |
| 501 | static int aica_pcmvolume_info(struct snd_kcontrol *kcontrol, |
| 502 | struct snd_ctl_elem_info *uinfo) |
| 503 | { |
| 504 | uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; |
| 505 | uinfo->count = 1; |
| 506 | uinfo->value.integer.min = 0; |
| 507 | uinfo->value.integer.max = 0xFF; |
| 508 | return 0; |
| 509 | } |
| 510 | |
| 511 | static int aica_pcmvolume_get(struct snd_kcontrol *kcontrol, |
| 512 | struct snd_ctl_elem_value *ucontrol) |
| 513 | { |
| 514 | struct snd_card_aica *dreamcastcard; |
| 515 | dreamcastcard = kcontrol->private_data; |
| 516 | if (unlikely(!dreamcastcard->channel)) |
| 517 | return -ETXTBSY; /* we've not yet been set up */ |
| 518 | ucontrol->value.integer.value[0] = dreamcastcard->channel->vol; |
| 519 | return 0; |
| 520 | } |
| 521 | |
| 522 | static int aica_pcmvolume_put(struct snd_kcontrol *kcontrol, |
| 523 | struct snd_ctl_elem_value *ucontrol) |
| 524 | { |
| 525 | struct snd_card_aica *dreamcastcard; |
Takashi Iwai | 3b89246 | 2007-11-15 16:17:24 +0100 | [diff] [blame] | 526 | unsigned int vol; |
Adrian McMenamin | 198de43 | 2007-05-18 14:26:59 +0200 | [diff] [blame] | 527 | dreamcastcard = kcontrol->private_data; |
| 528 | if (unlikely(!dreamcastcard->channel)) |
| 529 | return -ETXTBSY; |
Takashi Iwai | 3b89246 | 2007-11-15 16:17:24 +0100 | [diff] [blame] | 530 | vol = ucontrol->value.integer.value[0]; |
| 531 | if (vol > 0xff) |
| 532 | return -EINVAL; |
| 533 | if (unlikely(dreamcastcard->channel->vol == vol)) |
Adrian McMenamin | 198de43 | 2007-05-18 14:26:59 +0200 | [diff] [blame] | 534 | return 0; |
| 535 | dreamcastcard->channel->vol = ucontrol->value.integer.value[0]; |
| 536 | dreamcastcard->master_volume = ucontrol->value.integer.value[0]; |
| 537 | spu_memload(AICA_CHANNEL0_CONTROL_OFFSET, |
Takashi Iwai | d20b9b2 | 2007-07-09 10:36:22 +0200 | [diff] [blame] | 538 | dreamcastcard->channel, sizeof(struct aica_channel)); |
Adrian McMenamin | 198de43 | 2007-05-18 14:26:59 +0200 | [diff] [blame] | 539 | return 1; |
| 540 | } |
| 541 | |
| 542 | static struct snd_kcontrol_new snd_aica_pcmswitch_control __devinitdata = { |
| 543 | .iface = SNDRV_CTL_ELEM_IFACE_MIXER, |
| 544 | .name = "PCM Playback Switch", |
| 545 | .index = 0, |
| 546 | .info = aica_pcmswitch_info, |
| 547 | .get = aica_pcmswitch_get, |
| 548 | .put = aica_pcmswitch_put |
| 549 | }; |
| 550 | |
| 551 | static struct snd_kcontrol_new snd_aica_pcmvolume_control __devinitdata = { |
| 552 | .iface = SNDRV_CTL_ELEM_IFACE_MIXER, |
| 553 | .name = "PCM Playback Volume", |
| 554 | .index = 0, |
| 555 | .info = aica_pcmvolume_info, |
| 556 | .get = aica_pcmvolume_get, |
| 557 | .put = aica_pcmvolume_put |
| 558 | }; |
| 559 | |
| 560 | static int load_aica_firmware(void) |
| 561 | { |
| 562 | int err; |
| 563 | const struct firmware *fw_entry; |
| 564 | spu_reset(); |
| 565 | err = request_firmware(&fw_entry, "aica_firmware.bin", &pd->dev); |
| 566 | if (unlikely(err)) |
| 567 | return err; |
| 568 | /* write firware into memory */ |
| 569 | spu_disable(); |
| 570 | spu_memload(0, fw_entry->data, fw_entry->size); |
| 571 | spu_enable(); |
| 572 | release_firmware(fw_entry); |
| 573 | return err; |
| 574 | } |
| 575 | |
| 576 | static int __devinit add_aicamixer_controls(struct snd_card_aica |
| 577 | *dreamcastcard) |
| 578 | { |
| 579 | int err; |
| 580 | err = snd_ctl_add |
| 581 | (dreamcastcard->card, |
| 582 | snd_ctl_new1(&snd_aica_pcmvolume_control, dreamcastcard)); |
| 583 | if (unlikely(err < 0)) |
| 584 | return err; |
| 585 | err = snd_ctl_add |
| 586 | (dreamcastcard->card, |
| 587 | snd_ctl_new1(&snd_aica_pcmswitch_control, dreamcastcard)); |
| 588 | if (unlikely(err < 0)) |
| 589 | return err; |
| 590 | return 0; |
| 591 | } |
| 592 | |
Uwe Kleine-König | 418c8f8 | 2008-09-14 21:32:33 +0200 | [diff] [blame] | 593 | static int __devexit snd_aica_remove(struct platform_device *devptr) |
Adrian McMenamin | 198de43 | 2007-05-18 14:26:59 +0200 | [diff] [blame] | 594 | { |
| 595 | struct snd_card_aica *dreamcastcard; |
| 596 | dreamcastcard = platform_get_drvdata(devptr); |
| 597 | if (unlikely(!dreamcastcard)) |
| 598 | return -ENODEV; |
| 599 | snd_card_free(dreamcastcard->card); |
| 600 | kfree(dreamcastcard); |
| 601 | platform_set_drvdata(devptr, NULL); |
| 602 | return 0; |
| 603 | } |
| 604 | |
Uwe Kleine-König | 418c8f8 | 2008-09-14 21:32:33 +0200 | [diff] [blame] | 605 | static int __devinit snd_aica_probe(struct platform_device *devptr) |
Adrian McMenamin | 198de43 | 2007-05-18 14:26:59 +0200 | [diff] [blame] | 606 | { |
| 607 | int err; |
| 608 | struct snd_card_aica *dreamcastcard; |
| 609 | dreamcastcard = kmalloc(sizeof(struct snd_card_aica), GFP_KERNEL); |
| 610 | if (unlikely(!dreamcastcard)) |
| 611 | return -ENOMEM; |
Takashi Iwai | bd7dd77 | 2008-12-28 16:45:02 +0100 | [diff] [blame] | 612 | err = snd_card_create(index, SND_AICA_DRIVER, THIS_MODULE, 0, |
| 613 | &dreamcastcard->card); |
| 614 | if (unlikely(err < 0)) { |
Adrian McMenamin | 198de43 | 2007-05-18 14:26:59 +0200 | [diff] [blame] | 615 | kfree(dreamcastcard); |
Takashi Iwai | bd7dd77 | 2008-12-28 16:45:02 +0100 | [diff] [blame] | 616 | return err; |
Adrian McMenamin | 198de43 | 2007-05-18 14:26:59 +0200 | [diff] [blame] | 617 | } |
| 618 | strcpy(dreamcastcard->card->driver, "snd_aica"); |
| 619 | strcpy(dreamcastcard->card->shortname, SND_AICA_DRIVER); |
| 620 | strcpy(dreamcastcard->card->longname, |
| 621 | "Yamaha AICA Super Intelligent Sound Processor for SEGA Dreamcast"); |
Takashi Iwai | d20b9b2 | 2007-07-09 10:36:22 +0200 | [diff] [blame] | 622 | /* Prepare to use the queue */ |
| 623 | INIT_WORK(&(dreamcastcard->spu_dma_work), run_spu_dma); |
Adrian McMenamin | 198de43 | 2007-05-18 14:26:59 +0200 | [diff] [blame] | 624 | /* Load the PCM 'chip' */ |
| 625 | err = snd_aicapcmchip(dreamcastcard, 0); |
| 626 | if (unlikely(err < 0)) |
| 627 | goto freedreamcast; |
| 628 | snd_card_set_dev(dreamcastcard->card, &devptr->dev); |
| 629 | dreamcastcard->timer.data = 0; |
| 630 | dreamcastcard->channel = NULL; |
| 631 | /* Add basic controls */ |
| 632 | err = add_aicamixer_controls(dreamcastcard); |
| 633 | if (unlikely(err < 0)) |
| 634 | goto freedreamcast; |
| 635 | /* Register the card with ALSA subsystem */ |
| 636 | err = snd_card_register(dreamcastcard->card); |
| 637 | if (unlikely(err < 0)) |
| 638 | goto freedreamcast; |
| 639 | platform_set_drvdata(devptr, dreamcastcard); |
| 640 | aica_queue = create_workqueue(CARD_NAME); |
| 641 | if (unlikely(!aica_queue)) |
| 642 | goto freedreamcast; |
| 643 | snd_printk |
| 644 | ("ALSA Driver for Yamaha AICA Super Intelligent Sound Processor\n"); |
| 645 | return 0; |
| 646 | freedreamcast: |
| 647 | snd_card_free(dreamcastcard->card); |
| 648 | kfree(dreamcastcard); |
| 649 | return err; |
| 650 | } |
| 651 | |
| 652 | static struct platform_driver snd_aica_driver = { |
| 653 | .probe = snd_aica_probe, |
Uwe Kleine-König | 418c8f8 | 2008-09-14 21:32:33 +0200 | [diff] [blame] | 654 | .remove = __devexit_p(snd_aica_remove), |
Adrian McMenamin | 198de43 | 2007-05-18 14:26:59 +0200 | [diff] [blame] | 655 | .driver = { |
| 656 | .name = SND_AICA_DRIVER}, |
| 657 | }; |
| 658 | |
| 659 | static int __init aica_init(void) |
| 660 | { |
| 661 | int err; |
| 662 | err = platform_driver_register(&snd_aica_driver); |
| 663 | if (unlikely(err < 0)) |
| 664 | return err; |
| 665 | pd = platform_device_register_simple(SND_AICA_DRIVER, -1, |
| 666 | aica_memory_space, 2); |
Hirofumi Nakagawa | 801678c | 2008-04-29 01:03:09 -0700 | [diff] [blame] | 667 | if (IS_ERR(pd)) { |
Adrian McMenamin | 198de43 | 2007-05-18 14:26:59 +0200 | [diff] [blame] | 668 | platform_driver_unregister(&snd_aica_driver); |
| 669 | return PTR_ERR(pd); |
| 670 | } |
| 671 | /* Load the firmware */ |
| 672 | return load_aica_firmware(); |
| 673 | } |
| 674 | |
| 675 | static void __exit aica_exit(void) |
| 676 | { |
Takashi Iwai | d20b9b2 | 2007-07-09 10:36:22 +0200 | [diff] [blame] | 677 | /* Destroy the aica kernel thread * |
| 678 | * being extra cautious to check if it exists*/ |
| 679 | if (likely(aica_queue)) |
| 680 | destroy_workqueue(aica_queue); |
Adrian McMenamin | 198de43 | 2007-05-18 14:26:59 +0200 | [diff] [blame] | 681 | platform_device_unregister(pd); |
| 682 | platform_driver_unregister(&snd_aica_driver); |
| 683 | /* Kill any sound still playing and reset ARM7 to safe state */ |
| 684 | spu_reset(); |
| 685 | } |
| 686 | |
| 687 | module_init(aica_init); |
| 688 | module_exit(aica_exit); |