Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Driver for Sound Core PDAudioCF soundcard |
| 3 | * |
| 4 | * Copyright (c) 2003 by Jaroslav Kysela <perex@suse.cz> |
| 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 | #include <sound/driver.h> |
| 22 | #include <sound/core.h> |
| 23 | #include "pdaudiocf.h" |
| 24 | #include <sound/initval.h> |
| 25 | |
| 26 | /* |
| 27 | * |
| 28 | */ |
| 29 | irqreturn_t pdacf_interrupt(int irq, void *dev, struct pt_regs *regs) |
| 30 | { |
Takashi Iwai | db13154 | 2005-11-17 15:07:38 +0100 | [diff] [blame] | 31 | struct snd_pdacf *chip = dev; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 32 | unsigned short stat; |
| 33 | |
| 34 | if ((chip->chip_status & (PDAUDIOCF_STAT_IS_STALE| |
| 35 | PDAUDIOCF_STAT_IS_CONFIGURED| |
| 36 | PDAUDIOCF_STAT_IS_SUSPENDED)) != PDAUDIOCF_STAT_IS_CONFIGURED) |
| 37 | return IRQ_HANDLED; /* IRQ_NONE here? */ |
| 38 | |
| 39 | stat = inw(chip->port + PDAUDIOCF_REG_ISR); |
| 40 | if (stat & (PDAUDIOCF_IRQLVL|PDAUDIOCF_IRQOVR)) { |
| 41 | if (stat & PDAUDIOCF_IRQOVR) /* should never happen */ |
| 42 | snd_printk(KERN_ERR "PDAUDIOCF SRAM buffer overrun detected!\n"); |
| 43 | if (chip->pcm_substream) |
| 44 | tasklet_hi_schedule(&chip->tq); |
| 45 | if (!(stat & PDAUDIOCF_IRQAKM)) |
| 46 | stat |= PDAUDIOCF_IRQAKM; /* check rate */ |
| 47 | } |
| 48 | if (regs != NULL) |
| 49 | snd_ak4117_check_rate_and_errors(chip->ak4117, 0); |
| 50 | return IRQ_HANDLED; |
| 51 | } |
| 52 | |
| 53 | static inline void pdacf_transfer_mono16(u16 *dst, u16 xor, unsigned int size, unsigned long rdp_port) |
| 54 | { |
| 55 | while (size-- > 0) { |
| 56 | *dst++ = inw(rdp_port) ^ xor; |
| 57 | inw(rdp_port); |
| 58 | } |
| 59 | } |
| 60 | |
| 61 | static inline void pdacf_transfer_mono32(u32 *dst, u32 xor, unsigned int size, unsigned long rdp_port) |
| 62 | { |
| 63 | register u16 val1, val2; |
| 64 | |
| 65 | while (size-- > 0) { |
| 66 | val1 = inw(rdp_port); |
| 67 | val2 = inw(rdp_port); |
| 68 | inw(rdp_port); |
| 69 | *dst++ = ((((u32)val2 & 0xff) << 24) | ((u32)val1 << 8)) ^ xor; |
| 70 | } |
| 71 | } |
| 72 | |
| 73 | static inline void pdacf_transfer_stereo16(u16 *dst, u16 xor, unsigned int size, unsigned long rdp_port) |
| 74 | { |
| 75 | while (size-- > 0) { |
| 76 | *dst++ = inw(rdp_port) ^ xor; |
| 77 | *dst++ = inw(rdp_port) ^ xor; |
| 78 | } |
| 79 | } |
| 80 | |
| 81 | static inline void pdacf_transfer_stereo32(u32 *dst, u32 xor, unsigned int size, unsigned long rdp_port) |
| 82 | { |
| 83 | register u16 val1, val2, val3; |
| 84 | |
| 85 | while (size-- > 0) { |
| 86 | val1 = inw(rdp_port); |
| 87 | val2 = inw(rdp_port); |
| 88 | val3 = inw(rdp_port); |
| 89 | *dst++ = ((((u32)val2 & 0xff) << 24) | ((u32)val1 << 8)) ^ xor; |
| 90 | *dst++ = (((u32)val3 << 16) | (val2 & 0xff00)) ^ xor; |
| 91 | } |
| 92 | } |
| 93 | |
| 94 | static inline void pdacf_transfer_mono16sw(u16 *dst, u16 xor, unsigned int size, unsigned long rdp_port) |
| 95 | { |
| 96 | while (size-- > 0) { |
| 97 | *dst++ = swab16(inw(rdp_port) ^ xor); |
| 98 | inw(rdp_port); |
| 99 | } |
| 100 | } |
| 101 | |
| 102 | static inline void pdacf_transfer_mono32sw(u32 *dst, u32 xor, unsigned int size, unsigned long rdp_port) |
| 103 | { |
| 104 | register u16 val1, val2; |
| 105 | |
| 106 | while (size-- > 0) { |
| 107 | val1 = inw(rdp_port); |
| 108 | val2 = inw(rdp_port); |
| 109 | inw(rdp_port); |
| 110 | *dst++ = swab32((((val2 & 0xff) << 24) | ((u32)val1 << 8)) ^ xor); |
| 111 | } |
| 112 | } |
| 113 | |
| 114 | static inline void pdacf_transfer_stereo16sw(u16 *dst, u16 xor, unsigned int size, unsigned long rdp_port) |
| 115 | { |
| 116 | while (size-- > 0) { |
| 117 | *dst++ = swab16(inw(rdp_port) ^ xor); |
| 118 | *dst++ = swab16(inw(rdp_port) ^ xor); |
| 119 | } |
| 120 | } |
| 121 | |
| 122 | static inline void pdacf_transfer_stereo32sw(u32 *dst, u32 xor, unsigned int size, unsigned long rdp_port) |
| 123 | { |
| 124 | register u16 val1, val2, val3; |
| 125 | |
| 126 | while (size-- > 0) { |
| 127 | val1 = inw(rdp_port); |
| 128 | val2 = inw(rdp_port); |
| 129 | val3 = inw(rdp_port); |
| 130 | *dst++ = swab32((((val2 & 0xff) << 24) | ((u32)val1 << 8)) ^ xor); |
| 131 | *dst++ = swab32((((u32)val3 << 16) | (val2 & 0xff00)) ^ xor); |
| 132 | } |
| 133 | } |
| 134 | |
| 135 | static inline void pdacf_transfer_mono24le(u8 *dst, u16 xor, unsigned int size, unsigned long rdp_port) |
| 136 | { |
| 137 | register u16 val1, val2; |
| 138 | register u32 xval1; |
| 139 | |
| 140 | while (size-- > 0) { |
| 141 | val1 = inw(rdp_port); |
| 142 | val2 = inw(rdp_port); |
| 143 | inw(rdp_port); |
| 144 | xval1 = (((val2 & 0xff) << 8) | (val1 << 16)) ^ xor; |
| 145 | *dst++ = (u8)(xval1 >> 8); |
| 146 | *dst++ = (u8)(xval1 >> 16); |
| 147 | *dst++ = (u8)(xval1 >> 24); |
| 148 | } |
| 149 | } |
| 150 | |
| 151 | static inline void pdacf_transfer_mono24be(u8 *dst, u16 xor, unsigned int size, unsigned long rdp_port) |
| 152 | { |
| 153 | register u16 val1, val2; |
| 154 | register u32 xval1; |
| 155 | |
| 156 | while (size-- > 0) { |
| 157 | val1 = inw(rdp_port); |
| 158 | val2 = inw(rdp_port); |
| 159 | inw(rdp_port); |
| 160 | xval1 = (((val2 & 0xff) << 8) | (val1 << 16)) ^ xor; |
| 161 | *dst++ = (u8)(xval1 >> 24); |
| 162 | *dst++ = (u8)(xval1 >> 16); |
| 163 | *dst++ = (u8)(xval1 >> 8); |
| 164 | } |
| 165 | } |
| 166 | |
| 167 | static inline void pdacf_transfer_stereo24le(u8 *dst, u32 xor, unsigned int size, unsigned long rdp_port) |
| 168 | { |
| 169 | register u16 val1, val2, val3; |
| 170 | register u32 xval1, xval2; |
| 171 | |
| 172 | while (size-- > 0) { |
| 173 | val1 = inw(rdp_port); |
| 174 | val2 = inw(rdp_port); |
| 175 | val3 = inw(rdp_port); |
| 176 | xval1 = ((((u32)val2 & 0xff) << 24) | ((u32)val1 << 8)) ^ xor; |
| 177 | xval2 = (((u32)val3 << 16) | (val2 & 0xff00)) ^ xor; |
| 178 | *dst++ = (u8)(xval1 >> 8); |
| 179 | *dst++ = (u8)(xval1 >> 16); |
| 180 | *dst++ = (u8)(xval1 >> 24); |
| 181 | *dst++ = (u8)(xval2 >> 8); |
| 182 | *dst++ = (u8)(xval2 >> 16); |
| 183 | *dst++ = (u8)(xval2 >> 24); |
| 184 | } |
| 185 | } |
| 186 | |
| 187 | static inline void pdacf_transfer_stereo24be(u8 *dst, u32 xor, unsigned int size, unsigned long rdp_port) |
| 188 | { |
| 189 | register u16 val1, val2, val3; |
| 190 | register u32 xval1, xval2; |
| 191 | |
| 192 | while (size-- > 0) { |
| 193 | val1 = inw(rdp_port); |
| 194 | val2 = inw(rdp_port); |
| 195 | val3 = inw(rdp_port); |
| 196 | xval1 = ((((u32)val2 & 0xff) << 24) | ((u32)val1 << 8)) ^ xor; |
| 197 | xval2 = (((u32)val3 << 16) | (val2 & 0xff00)) ^ xor; |
| 198 | *dst++ = (u8)(xval1 >> 24); |
| 199 | *dst++ = (u8)(xval1 >> 16); |
| 200 | *dst++ = (u8)(xval1 >> 8); |
| 201 | *dst++ = (u8)(xval2 >> 24); |
| 202 | *dst++ = (u8)(xval2 >> 16); |
| 203 | *dst++ = (u8)(xval2 >> 8); |
| 204 | } |
| 205 | } |
| 206 | |
Takashi Iwai | db13154 | 2005-11-17 15:07:38 +0100 | [diff] [blame] | 207 | static void pdacf_transfer(struct snd_pdacf *chip, unsigned int size, unsigned int off) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 208 | { |
| 209 | unsigned long rdp_port = chip->port + PDAUDIOCF_REG_MD; |
| 210 | unsigned int xor = chip->pcm_xor; |
| 211 | |
| 212 | if (chip->pcm_sample == 3) { |
| 213 | if (chip->pcm_little) { |
| 214 | if (chip->pcm_channels == 1) { |
| 215 | pdacf_transfer_mono24le((char *)chip->pcm_area + (off * 3), xor, size, rdp_port); |
| 216 | } else { |
| 217 | pdacf_transfer_stereo24le((char *)chip->pcm_area + (off * 6), xor, size, rdp_port); |
| 218 | } |
| 219 | } else { |
| 220 | if (chip->pcm_channels == 1) { |
| 221 | pdacf_transfer_mono24be((char *)chip->pcm_area + (off * 3), xor, size, rdp_port); |
| 222 | } else { |
| 223 | pdacf_transfer_stereo24be((char *)chip->pcm_area + (off * 6), xor, size, rdp_port); |
| 224 | } |
| 225 | } |
| 226 | return; |
| 227 | } |
| 228 | if (chip->pcm_swab == 0) { |
| 229 | if (chip->pcm_channels == 1) { |
| 230 | if (chip->pcm_frame == 2) { |
| 231 | pdacf_transfer_mono16((u16 *)chip->pcm_area + off, xor, size, rdp_port); |
| 232 | } else { |
| 233 | pdacf_transfer_mono32((u32 *)chip->pcm_area + off, xor, size, rdp_port); |
| 234 | } |
| 235 | } else { |
| 236 | if (chip->pcm_frame == 2) { |
| 237 | pdacf_transfer_stereo16((u16 *)chip->pcm_area + (off * 2), xor, size, rdp_port); |
| 238 | } else { |
| 239 | pdacf_transfer_stereo32((u32 *)chip->pcm_area + (off * 2), xor, size, rdp_port); |
| 240 | } |
| 241 | } |
| 242 | } else { |
| 243 | if (chip->pcm_channels == 1) { |
| 244 | if (chip->pcm_frame == 2) { |
| 245 | pdacf_transfer_mono16sw((u16 *)chip->pcm_area + off, xor, size, rdp_port); |
| 246 | } else { |
| 247 | pdacf_transfer_mono32sw((u32 *)chip->pcm_area + off, xor, size, rdp_port); |
| 248 | } |
| 249 | } else { |
| 250 | if (chip->pcm_frame == 2) { |
| 251 | pdacf_transfer_stereo16sw((u16 *)chip->pcm_area + (off * 2), xor, size, rdp_port); |
| 252 | } else { |
| 253 | pdacf_transfer_stereo32sw((u32 *)chip->pcm_area + (off * 2), xor, size, rdp_port); |
| 254 | } |
| 255 | } |
| 256 | } |
| 257 | } |
| 258 | |
| 259 | void pdacf_tasklet(unsigned long private_data) |
| 260 | { |
Takashi Iwai | db13154 | 2005-11-17 15:07:38 +0100 | [diff] [blame] | 261 | struct snd_pdacf *chip = (struct snd_pdacf *) private_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 262 | int size, off, cont, rdp, wdp; |
| 263 | |
| 264 | if ((chip->chip_status & (PDAUDIOCF_STAT_IS_STALE|PDAUDIOCF_STAT_IS_CONFIGURED)) != PDAUDIOCF_STAT_IS_CONFIGURED) |
| 265 | return; |
| 266 | |
| 267 | if (chip->pcm_substream == NULL || chip->pcm_substream->runtime == NULL || !snd_pcm_running(chip->pcm_substream)) |
| 268 | return; |
| 269 | |
| 270 | rdp = inw(chip->port + PDAUDIOCF_REG_RDP); |
| 271 | wdp = inw(chip->port + PDAUDIOCF_REG_WDP); |
| 272 | // printk("TASKLET: rdp = %x, wdp = %x\n", rdp, wdp); |
| 273 | size = wdp - rdp; |
| 274 | if (size < 0) |
| 275 | size += 0x10000; |
| 276 | if (size == 0) |
| 277 | size = 0x10000; |
| 278 | size /= chip->pcm_frame; |
| 279 | if (size > 64) |
| 280 | size -= 32; |
| 281 | |
| 282 | #if 0 |
| 283 | chip->pcm_hwptr += size; |
| 284 | chip->pcm_hwptr %= chip->pcm_size; |
| 285 | chip->pcm_tdone += size; |
| 286 | if (chip->pcm_frame == 2) { |
| 287 | unsigned long rdp_port = chip->port + PDAUDIOCF_REG_MD; |
| 288 | while (size-- > 0) { |
| 289 | inw(rdp_port); |
| 290 | inw(rdp_port); |
| 291 | } |
| 292 | } else { |
| 293 | unsigned long rdp_port = chip->port + PDAUDIOCF_REG_MD; |
| 294 | while (size-- > 0) { |
| 295 | inw(rdp_port); |
| 296 | inw(rdp_port); |
| 297 | inw(rdp_port); |
| 298 | } |
| 299 | } |
| 300 | #else |
| 301 | off = chip->pcm_hwptr + chip->pcm_tdone; |
| 302 | off %= chip->pcm_size; |
| 303 | chip->pcm_tdone += size; |
| 304 | while (size > 0) { |
| 305 | cont = chip->pcm_size - off; |
| 306 | if (cont > size) |
| 307 | cont = size; |
| 308 | pdacf_transfer(chip, cont, off); |
| 309 | off += cont; |
| 310 | off %= chip->pcm_size; |
| 311 | size -= cont; |
| 312 | } |
| 313 | #endif |
| 314 | spin_lock(&chip->reg_lock); |
| 315 | while (chip->pcm_tdone >= chip->pcm_period) { |
| 316 | chip->pcm_hwptr += chip->pcm_period; |
| 317 | chip->pcm_hwptr %= chip->pcm_size; |
| 318 | chip->pcm_tdone -= chip->pcm_period; |
| 319 | spin_unlock(&chip->reg_lock); |
| 320 | snd_pcm_period_elapsed(chip->pcm_substream); |
| 321 | spin_lock(&chip->reg_lock); |
| 322 | } |
| 323 | spin_unlock(&chip->reg_lock); |
| 324 | // printk("TASKLET: end\n"); |
| 325 | } |