diff options
Diffstat (limited to 'sound/pci/ice1712/amp.c')
| -rw-r--r-- | sound/pci/ice1712/amp.c | 83 |
1 files changed, 83 insertions, 0 deletions
diff --git a/sound/pci/ice1712/amp.c b/sound/pci/ice1712/amp.c new file mode 100644 index 0000000000..a7b496de6c --- /dev/null +++ b/sound/pci/ice1712/amp.c @@ -0,0 +1,83 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * ALSA driver for ICEnsemble VT1724 (Envy24HT) + * + * Lowlevel functions for Advanced Micro Peripherals Ltd AUDIO2000 + * + * Copyright (c) 2000 Jaroslav Kysela <perex@perex.cz> + */ + +#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 */ +}; + |