diff options
Diffstat (limited to 'kernel/sound/pci/ice1712/amp.c')
| -rw-r--r-- | kernel/sound/pci/ice1712/amp.c | 97 |
1 files changed, 97 insertions, 0 deletions
diff --git a/kernel/sound/pci/ice1712/amp.c b/kernel/sound/pci/ice1712/amp.c new file mode 100644 index 000000000..2f9b93467 --- /dev/null +++ b/kernel/sound/pci/ice1712/amp.c @@ -0,0 +1,97 @@ +/* + * ALSA driver for ICEnsemble VT1724 (Envy24HT) + * + * Lowlevel functions for Advanced Micro Peripherals Ltd AUDIO2000 + * + * Copyright (c) 2000 Jaroslav Kysela <perex@perex.cz> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + * + */ + +#include <linux/delay.h> +#include <linux/interrupt.h> +#include <linux/init.h> +#include <sound/core.h> + +#include "ice1712.h" +#include "envy24ht.h" +#include "amp.h" + +static void wm_put(struct snd_ice1712 *ice, int reg, unsigned short val) +{ + unsigned short cval; + cval = (reg << 9) | val; + snd_vt1724_write_i2c(ice, WM_DEV, cval >> 8, cval & 0xff); +} + +static int snd_vt1724_amp_init(struct snd_ice1712 *ice) +{ + static const unsigned short wm_inits[] = { + WM_ATTEN_L, 0x0000, /* 0 db */ + WM_ATTEN_R, 0x0000, /* 0 db */ + WM_DAC_CTRL, 0x0008, /* 24bit I2S */ + WM_INT_CTRL, 0x0001, /* 24bit I2S */ + }; + + unsigned int i; + + /* only use basic functionality for now */ + + /* VT1616 6ch codec connected to PSDOUT0 using packed mode */ + ice->num_total_dacs = 6; + ice->num_total_adcs = 2; + + /* Chaintech AV-710 has another WM8728 codec connected to PSDOUT4 + (shared with the SPDIF output). Mixer control for this codec + is not yet supported. */ + if (ice->eeprom.subvendor == VT1724_SUBDEVICE_AV710) { + for (i = 0; i < ARRAY_SIZE(wm_inits); i += 2) + wm_put(ice, wm_inits[i], wm_inits[i+1]); + } + + return 0; +} + +static int snd_vt1724_amp_add_controls(struct snd_ice1712 *ice) +{ + if (ice->ac97) + /* we use pins 39 and 41 of the VT1616 for left and right + read outputs */ + snd_ac97_write_cache(ice->ac97, 0x5a, + snd_ac97_read(ice->ac97, 0x5a) & ~0x8000); + return 0; +} + + +/* entry point */ +struct snd_ice1712_card_info snd_vt1724_amp_cards[] = { + { + .subvendor = VT1724_SUBDEVICE_AV710, + .name = "Chaintech AV-710", + .model = "av710", + .chip_init = snd_vt1724_amp_init, + .build_controls = snd_vt1724_amp_add_controls, + }, + { + .subvendor = VT1724_SUBDEVICE_AUDIO2000, + .name = "AMP Ltd AUDIO2000", + .model = "amp2000", + .chip_init = snd_vt1724_amp_init, + .build_controls = snd_vt1724_amp_add_controls, + }, + { } /* terminator */ +}; + |