amp.c 2.7 KB

1234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950515253545556575859606162636465666768697071727374757677787980818283848586878889909192939495
  1. /*
  2. * ALSA driver for ICEnsemble VT1724 (Envy24HT)
  3. *
  4. * Lowlevel functions for Advanced Micro Peripherals Ltd AUDIO2000
  5. *
  6. * Copyright (c) 2000 Jaroslav Kysela <perex@suse.cz>
  7. *
  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.
  12. *
  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.
  17. *
  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
  21. *
  22. */
  23. #include <sound/driver.h>
  24. #include <asm/io.h>
  25. #include <linux/delay.h>
  26. #include <linux/interrupt.h>
  27. #include <linux/init.h>
  28. #include <linux/slab.h>
  29. #include <sound/core.h>
  30. #include "ice1712.h"
  31. #include "envy24ht.h"
  32. #include "amp.h"
  33. static void wm_put(struct snd_ice1712 *ice, int reg, unsigned short val)
  34. {
  35. unsigned short cval;
  36. cval = (reg << 9) | val;
  37. snd_vt1724_write_i2c(ice, WM_DEV, cval >> 8, cval & 0xff);
  38. }
  39. static int __devinit snd_vt1724_amp_init(struct snd_ice1712 *ice)
  40. {
  41. static const unsigned short wm_inits[] = {
  42. WM_ATTEN_L, 0x0000, /* 0 db */
  43. WM_ATTEN_R, 0x0000, /* 0 db */
  44. WM_DAC_CTRL, 0x0008, /* 24bit I2S */
  45. WM_INT_CTRL, 0x0001, /* 24bit I2S */
  46. };
  47. unsigned int i;
  48. /* only use basic functionality for now */
  49. ice->num_total_dacs = 2; /* only PSDOUT0 is connected */
  50. ice->num_total_adcs = 2;
  51. /* Chaintech AV-710 has another codecs, which need initialization */
  52. /* initialize WM8728 codec */
  53. if (ice->eeprom.subvendor == VT1724_SUBDEVICE_AV710) {
  54. for (i = 0; i < ARRAY_SIZE(wm_inits); i += 2)
  55. wm_put(ice, wm_inits[i], wm_inits[i+1]);
  56. }
  57. return 0;
  58. }
  59. static int __devinit snd_vt1724_amp_add_controls(struct snd_ice1712 *ice)
  60. {
  61. /* we use pins 39 and 41 of the VT1616 for left and right read outputs */
  62. snd_ac97_write_cache(ice->ac97, 0x5a, snd_ac97_read(ice->ac97, 0x5a) & ~0x8000);
  63. return 0;
  64. }
  65. /* entry point */
  66. const struct snd_ice1712_card_info snd_vt1724_amp_cards[] __devinitdata = {
  67. {
  68. .subvendor = VT1724_SUBDEVICE_AV710,
  69. .name = "Chaintech AV-710",
  70. .model = "av710",
  71. .chip_init = snd_vt1724_amp_init,
  72. .build_controls = snd_vt1724_amp_add_controls,
  73. },
  74. {
  75. .subvendor = VT1724_SUBDEVICE_AUDIO2000,
  76. .name = "AMP Ltd AUDIO2000",
  77. .model = "amp2000",
  78. .chip_init = snd_vt1724_amp_init,
  79. .build_controls = snd_vt1724_amp_add_controls,
  80. },
  81. { } /* terminator */
  82. };