// SPDX-License-Identifier: GPL-2.0-or-later /* * ALSA driver for VIA VT82xx (South Bridge) * * VT82C686A/B/C, VT8233A/C, VT8235 * * Copyright (c) 2000 Jaroslav Kysela <[email protected]> * Tjeerd.Mulder <[email protected]> * 2002 Takashi Iwai <[email protected]> */ /* * Changes: * * Dec. 19, 2002 Takashi Iwai <[email protected]> * - use the DSX channels for the first pcm playback. * (on VIA8233, 8233C and 8235 only) * this will allow you play simultaneously up to 4 streams. * multi-channel playback is assigned to the second device * on these chips. * - support the secondary capture (on VIA8233/C,8235) * - SPDIF support * the DSX3 channel can be used for SPDIF output. * on VIA8233A, this channel is assigned to the second pcm * playback. * the card config of alsa-lib will assign the correct * device for applications. * - clean up the code, separate low-level initialization * routines for each chipset. * * Sep. 26, 2005 Karsten Wiese <[email protected]> * - Optimize position calculation for the 823x chips. */ #include <linux/io.h> #include <linux/delay.h> #include <linux/interrupt.h> #include <linux/init.h> #include <linux/pci.h> #include <linux/slab.h> #include <linux/gameport.h> #include <linux/module.h> #include <sound/core.h> #include <sound/pcm.h> #include <sound/pcm_params.h> #include <sound/info.h> #include <sound/tlv.h> #include <sound/ac97_codec.h> #include <sound/mpu401.h> #include <sound/initval.h> #if 0 #define POINTER_DEBUG #endif MODULE_AUTHOR(…) …; MODULE_DESCRIPTION(…) …; MODULE_LICENSE(…) …; #if IS_REACHABLE(CONFIG_GAMEPORT) #define SUPPORT_JOYSTICK … #endif static int index = …; /* Index 0-MAX */ static char *id = …; /* ID for this card */ static long mpu_port; #ifdef SUPPORT_JOYSTICK static bool joystick; #endif static int ac97_clock = …; static char *ac97_quirk; static int dxs_support; static int dxs_init_volume = …; static int nodelay; module_param(index, int, 0444); MODULE_PARM_DESC(…) …; module_param(id, charp, 0444); MODULE_PARM_DESC(…) …; module_param_hw(mpu_port, long, ioport, 0444); MODULE_PARM_DESC(…) …; #ifdef SUPPORT_JOYSTICK module_param(joystick, bool, 0444); MODULE_PARM_DESC(…) …; #endif module_param(ac97_clock, int, 0444); MODULE_PARM_DESC(…) …; module_param(ac97_quirk, charp, 0444); MODULE_PARM_DESC(…) …; module_param(dxs_support, int, 0444); MODULE_PARM_DESC(…) …; module_param(dxs_init_volume, int, 0644); MODULE_PARM_DESC(…) …; module_param(nodelay, int, 0444); MODULE_PARM_DESC(…) …; /* just for backward compatibility */ static bool enable; module_param(enable, bool, 0444); /* revision numbers for via686 */ #define VIA_REV_686_A … #define VIA_REV_686_B … #define VIA_REV_686_C … #define VIA_REV_686_D … #define VIA_REV_686_E … #define VIA_REV_686_H … /* revision numbers for via8233 */ #define VIA_REV_PRE_8233 … #define VIA_REV_8233C … #define VIA_REV_8233 … #define VIA_REV_8233A … #define VIA_REV_8235 … #define VIA_REV_8237 … #define VIA_REV_8251 … /* * Direct registers */ #define VIAREG(via, x) … #define VIADEV_REG(viadev, x) … /* common offsets */ #define VIA_REG_OFFSET_STATUS … #define VIA_REG_STAT_ACTIVE … #define VIA8233_SHADOW_STAT_ACTIVE … #define VIA_REG_STAT_PAUSED … #define VIA_REG_STAT_TRIGGER_QUEUED … #define VIA_REG_STAT_STOPPED … #define VIA_REG_STAT_EOL … #define VIA_REG_STAT_FLAG … #define VIA_REG_OFFSET_CONTROL … #define VIA_REG_CTRL_START … #define VIA_REG_CTRL_TERMINATE … #define VIA_REG_CTRL_AUTOSTART … #define VIA_REG_CTRL_PAUSE … #define VIA_REG_CTRL_INT_STOP … #define VIA_REG_CTRL_INT_EOL … #define VIA_REG_CTRL_INT_FLAG … #define VIA_REG_CTRL_RESET … #define VIA_REG_CTRL_INT … #define VIA_REG_OFFSET_TYPE … #define VIA_REG_TYPE_AUTOSTART … #define VIA_REG_TYPE_16BIT … #define VIA_REG_TYPE_STEREO … #define VIA_REG_TYPE_INT_LLINE … #define VIA_REG_TYPE_INT_LSAMPLE … #define VIA_REG_TYPE_INT_LESSONE … #define VIA_REG_TYPE_INT_MASK … #define VIA_REG_TYPE_INT_EOL … #define VIA_REG_TYPE_INT_FLAG … #define VIA_REG_OFFSET_TABLE_PTR … #define VIA_REG_OFFSET_CURR_PTR … #define VIA_REG_OFFSET_STOP_IDX … #define VIA8233_REG_TYPE_16BIT … #define VIA8233_REG_TYPE_STEREO … #define VIA_REG_OFFSET_CURR_COUNT … #define VIA_REG_OFFSET_CURR_INDEX … #define DEFINE_VIA_REGSET(name,val) … /* playback block */ DEFINE_VIA_REGSET(PLAYBACK, 0x00); DEFINE_VIA_REGSET(CAPTURE, 0x10); DEFINE_VIA_REGSET(FM, 0x20); /* AC'97 */ #define VIA_REG_AC97 … #define VIA_REG_AC97_CODEC_ID_MASK … #define VIA_REG_AC97_CODEC_ID_SHIFT … #define VIA_REG_AC97_CODEC_ID_PRIMARY … #define VIA_REG_AC97_CODEC_ID_SECONDARY … #define VIA_REG_AC97_SECONDARY_VALID … #define VIA_REG_AC97_PRIMARY_VALID … #define VIA_REG_AC97_BUSY … #define VIA_REG_AC97_READ … #define VIA_REG_AC97_CMD_SHIFT … #define VIA_REG_AC97_CMD_MASK … #define VIA_REG_AC97_DATA_SHIFT … #define VIA_REG_AC97_DATA_MASK … #define VIA_REG_SGD_SHADOW … /* via686 */ #define VIA_REG_SGD_STAT_PB_FLAG … #define VIA_REG_SGD_STAT_CP_FLAG … #define VIA_REG_SGD_STAT_FM_FLAG … #define VIA_REG_SGD_STAT_PB_EOL … #define VIA_REG_SGD_STAT_CP_EOL … #define VIA_REG_SGD_STAT_FM_EOL … #define VIA_REG_SGD_STAT_PB_STOP … #define VIA_REG_SGD_STAT_CP_STOP … #define VIA_REG_SGD_STAT_FM_STOP … #define VIA_REG_SGD_STAT_PB_ACTIVE … #define VIA_REG_SGD_STAT_CP_ACTIVE … #define VIA_REG_SGD_STAT_FM_ACTIVE … /* via8233 */ #define VIA8233_REG_SGD_STAT_FLAG … #define VIA8233_REG_SGD_STAT_EOL … #define VIA8233_REG_SGD_STAT_STOP … #define VIA8233_REG_SGD_STAT_ACTIVE … #define VIA8233_INTR_MASK(chan) … #define VIA8233_REG_SGD_CHAN_SDX … #define VIA8233_REG_SGD_CHAN_MULTI … #define VIA8233_REG_SGD_CHAN_REC … #define VIA8233_REG_SGD_CHAN_REC1 … #define VIA_REG_GPI_STATUS … #define VIA_REG_GPI_INTR … /* multi-channel and capture registers for via8233 */ DEFINE_VIA_REGSET(MULTPLAY, 0x40); DEFINE_VIA_REGSET(CAPTURE_8233, 0x60); /* via8233-specific registers */ #define VIA_REG_OFS_PLAYBACK_VOLUME_L … #define VIA_REG_OFS_PLAYBACK_VOLUME_R … #define VIA_REG_OFS_MULTPLAY_FORMAT … #define VIA_REG_MULTPLAY_FMT_8BIT … #define VIA_REG_MULTPLAY_FMT_16BIT … #define VIA_REG_MULTPLAY_FMT_CH_MASK … #define VIA_REG_OFS_CAPTURE_FIFO … #define VIA_REG_CAPTURE_FIFO_ENABLE … #define VIA_DXS_MAX_VOLUME … #define VIA_REG_CAPTURE_CHANNEL … #define VIA_REG_CAPTURE_CHANNEL_MIC … #define VIA_REG_CAPTURE_CHANNEL_LINE … #define VIA_REG_CAPTURE_SELECT_CODEC … #define VIA_TBL_BIT_FLAG … #define VIA_TBL_BIT_EOL … /* pci space */ #define VIA_ACLINK_STAT … #define VIA_ACLINK_C11_READY … #define VIA_ACLINK_C10_READY … #define VIA_ACLINK_C01_READY … #define VIA_ACLINK_LOWPOWER … #define VIA_ACLINK_C00_READY … #define VIA_ACLINK_CTRL … #define VIA_ACLINK_CTRL_ENABLE … #define VIA_ACLINK_CTRL_RESET … #define VIA_ACLINK_CTRL_SYNC … #define VIA_ACLINK_CTRL_SDO … #define VIA_ACLINK_CTRL_VRA … #define VIA_ACLINK_CTRL_PCM … #define VIA_ACLINK_CTRL_FM … #define VIA_ACLINK_CTRL_SB … #define VIA_ACLINK_CTRL_INIT … #define VIA_FUNC_ENABLE … #define VIA_FUNC_MIDI_PNP … #define VIA_FUNC_MIDI_IRQMASK … #define VIA_FUNC_RX2C_WRITE … #define VIA_FUNC_SB_FIFO_EMPTY … #define VIA_FUNC_ENABLE_GAME … #define VIA_FUNC_ENABLE_FM … #define VIA_FUNC_ENABLE_MIDI … #define VIA_FUNC_ENABLE_SB … #define VIA_PNP_CONTROL … #define VIA_FM_NMI_CTRL … #define VIA8233_VOLCHG_CTRL … #define VIA8233_SPDIF_CTRL … #define VIA8233_SPDIF_DX3 … #define VIA8233_SPDIF_SLOT_MASK … #define VIA8233_SPDIF_SLOT_1011 … #define VIA8233_SPDIF_SLOT_34 … #define VIA8233_SPDIF_SLOT_78 … #define VIA8233_SPDIF_SLOT_69 … /* */ #define VIA_DXS_AUTO … #define VIA_DXS_ENABLE … #define VIA_DXS_DISABLE … #define VIA_DXS_48K … #define VIA_DXS_NO_VRA … #define VIA_DXS_SRC … /* * pcm stream */ struct snd_via_sg_table { … } ; #define VIA_TABLE_SIZE … #define VIA_MAX_BUFSIZE … struct viadev { … }; enum { … }; enum { … }; #define VIA_MAX_DEVS … struct via_rate_lock { … }; struct via82xx { … }; static const struct pci_device_id snd_via82xx_ids[] = …; MODULE_DEVICE_TABLE(pci, snd_via82xx_ids); /* */ /* * allocate and initialize the descriptor buffers * periods = number of periods * fragsize = period size in bytes */ static int build_via_table(struct viadev *dev, struct snd_pcm_substream *substream, struct pci_dev *pci, unsigned int periods, unsigned int fragsize) { … } static int clean_via_table(struct viadev *dev, struct snd_pcm_substream *substream, struct pci_dev *pci) { … } /* * Basic I/O */ static inline unsigned int snd_via82xx_codec_xread(struct via82xx *chip) { … } static inline void snd_via82xx_codec_xwrite(struct via82xx *chip, unsigned int val) { … } static int snd_via82xx_codec_ready(struct via82xx *chip, int secondary) { … } static int snd_via82xx_codec_valid(struct via82xx *chip, int secondary) { … } static void snd_via82xx_codec_wait(struct snd_ac97 *ac97) { … } static void snd_via82xx_codec_write(struct snd_ac97 *ac97, unsigned short reg, unsigned short val) { … } static unsigned short snd_via82xx_codec_read(struct snd_ac97 *ac97, unsigned short reg) { … } static void snd_via82xx_channel_reset(struct via82xx *chip, struct viadev *viadev) { … } /* * Interrupt handler * Used for 686 and 8233A */ static irqreturn_t snd_via686_interrupt(int irq, void *dev_id) { … } /* * Interrupt handler */ static irqreturn_t snd_via8233_interrupt(int irq, void *dev_id) { … } /* * PCM callbacks */ /* * trigger callback */ static int snd_via82xx_pcm_trigger(struct snd_pcm_substream *substream, int cmd) { … } /* * pointer callbacks */ /* * calculate the linear position at the given sg-buffer index and the rest count */ #define check_invalid_pos(viadev,pos) … static inline unsigned int calc_linear_pos(struct via82xx *chip, struct viadev *viadev, unsigned int idx, unsigned int count) { … } /* * get the current pointer on via686 */ static snd_pcm_uframes_t snd_via686_pcm_pointer(struct snd_pcm_substream *substream) { … } /* * get the current pointer on via823x */ static snd_pcm_uframes_t snd_via8233_pcm_pointer(struct snd_pcm_substream *substream) { … } /* * hw_params callback: * allocate the buffer and build up the buffer description table */ static int snd_via82xx_hw_params(struct snd_pcm_substream *substream, struct snd_pcm_hw_params *hw_params) { … } /* * hw_free callback: * clean up the buffer description table and release the buffer */ static int snd_via82xx_hw_free(struct snd_pcm_substream *substream) { … } /* * set up the table pointer */ static void snd_via82xx_set_table_ptr(struct via82xx *chip, struct viadev *viadev) { … } /* * prepare callback for playback and capture on via686 */ static void via686_setup_format(struct via82xx *chip, struct viadev *viadev, struct snd_pcm_runtime *runtime) { … } static int snd_via686_playback_prepare(struct snd_pcm_substream *substream) { … } static int snd_via686_capture_prepare(struct snd_pcm_substream *substream) { … } /* * lock the current rate */ static int via_lock_rate(struct via_rate_lock *rec, int rate) { … } /* * prepare callback for DSX playback on via823x */ static int snd_via8233_playback_prepare(struct snd_pcm_substream *substream) { … } /* * prepare callback for multi-channel playback on via823x */ static int snd_via8233_multi_prepare(struct snd_pcm_substream *substream) { … } /* * prepare callback for capture on via823x */ static int snd_via8233_capture_prepare(struct snd_pcm_substream *substream) { … } /* * pcm hardware definition, identical for both playback and capture */ static const struct snd_pcm_hardware snd_via82xx_hw = …; /* * open callback skeleton */ static int snd_via82xx_pcm_open(struct via82xx *chip, struct viadev *viadev, struct snd_pcm_substream *substream) { … } /* * open callback for playback on via686 */ static int snd_via686_playback_open(struct snd_pcm_substream *substream) { … } /* * open callback for playback on via823x DXS */ static int snd_via8233_playback_open(struct snd_pcm_substream *substream) { … } /* * open callback for playback on via823x multi-channel */ static int snd_via8233_multi_open(struct snd_pcm_substream *substream) { … } /* * open callback for capture on via686 and via823x */ static int snd_via82xx_capture_open(struct snd_pcm_substream *substream) { … } /* * close callback */ static int snd_via82xx_pcm_close(struct snd_pcm_substream *substream) { … } static int snd_via8233_playback_close(struct snd_pcm_substream *substream) { … } /* via686 playback callbacks */ static const struct snd_pcm_ops snd_via686_playback_ops = …; /* via686 capture callbacks */ static const struct snd_pcm_ops snd_via686_capture_ops = …; /* via823x DSX playback callbacks */ static const struct snd_pcm_ops snd_via8233_playback_ops = …; /* via823x multi-channel playback callbacks */ static const struct snd_pcm_ops snd_via8233_multi_ops = …; /* via823x capture callbacks */ static const struct snd_pcm_ops snd_via8233_capture_ops = …; static void init_viadev(struct via82xx *chip, int idx, unsigned int reg_offset, int shadow_pos, int direction) { … } /* * create pcm instances for VIA8233, 8233C and 8235 (not 8233A) */ static int snd_via8233_pcm_new(struct via82xx *chip) { … } /* * create pcm instances for VIA8233A */ static int snd_via8233a_pcm_new(struct via82xx *chip) { … } /* * create a pcm instance for via686a/b */ static int snd_via686_pcm_new(struct via82xx *chip) { … } /* * Mixer part */ static int snd_via8233_capture_source_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo) { … } static int snd_via8233_capture_source_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) { … } static int snd_via8233_capture_source_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) { … } static struct snd_kcontrol_new snd_via8233_capture_source = …; #define snd_via8233_dxs3_spdif_info … static int snd_via8233_dxs3_spdif_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) { … } static int snd_via8233_dxs3_spdif_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) { … } static const struct snd_kcontrol_new snd_via8233_dxs3_spdif_control = …; static int snd_via8233_dxs_volume_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo) { … } static int snd_via8233_dxs_volume_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) { … } static int snd_via8233_pcmdxs_volume_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) { … } static int snd_via8233_dxs_volume_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) { … } static int snd_via8233_pcmdxs_volume_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol) { … } static const DECLARE_TLV_DB_SCALE(db_scale_dxs, -4650, 150, 1); static const struct snd_kcontrol_new snd_via8233_pcmdxs_volume_control = …; static const struct snd_kcontrol_new snd_via8233_dxs_volume_control = …; /* */ static void snd_via82xx_mixer_free_ac97_bus(struct snd_ac97_bus *bus) { … } static void snd_via82xx_mixer_free_ac97(struct snd_ac97 *ac97) { … } static const struct ac97_quirk ac97_quirks[] = …; static int snd_via82xx_mixer_new(struct via82xx *chip, const char *quirk_override) { … } #ifdef SUPPORT_JOYSTICK #define JOYSTICK_ADDR … static int snd_via686_create_gameport(struct via82xx *chip, unsigned char *legacy) { … } static void snd_via686_free_gameport(struct via82xx *chip) { … } #else static inline int snd_via686_create_gameport(struct via82xx *chip, unsigned char *legacy) { return -ENOSYS; } static inline void snd_via686_free_gameport(struct via82xx *chip) { } #endif /* * */ static int snd_via8233_init_misc(struct via82xx *chip) { … } static int snd_via686_init_misc(struct via82xx *chip) { … } /* * proc interface */ static void snd_via82xx_proc_read(struct snd_info_entry *entry, struct snd_info_buffer *buffer) { … } static void snd_via82xx_proc_init(struct via82xx *chip) { … } /* * */ static int snd_via82xx_chip_init(struct via82xx *chip) { … } /* * power management */ static int snd_via82xx_suspend(struct device *dev) { … } static int snd_via82xx_resume(struct device *dev) { … } static DEFINE_SIMPLE_DEV_PM_OPS(snd_via82xx_pm, snd_via82xx_suspend, snd_via82xx_resume); static void snd_via82xx_free(struct snd_card *card) { … } static int snd_via82xx_create(struct snd_card *card, struct pci_dev *pci, int chip_type, int revision, unsigned int ac97_clock) { … } struct via823x_info { … }; static const struct via823x_info via823x_cards[] = …; /* * auto detection of DXS channel supports. */ static const struct snd_pci_quirk dxs_allowlist[] = …; static int check_dxs_list(struct pci_dev *pci, int revision) { const struct snd_pci_quirk *w; w = snd_pci_quirk_lookup(pci, dxs_allowlist); if (w) { dev_dbg(&pci->dev, "DXS allow list for %s found\n", snd_pci_quirk_name(w)); return w->value; } /* for newer revision, default to DXS_SRC */ if (revision >= VIA_REV_8235) return VIA_DXS_SRC; /* * not detected, try 48k rate only to be sure. */ dev_info(&pci->dev, "Assuming DXS channels with 48k fixed sample rate.\n"); dev_info(&pci->dev, " Please try dxs_support=5 option\n"); dev_info(&pci->dev, " and report if it works on your machine.\n"); dev_info(&pci->dev, " For more details, read ALSA-Configuration.txt.\n"); return VIA_DXS_48K; }; static int __snd_via82xx_probe(struct pci_dev *pci, const struct pci_device_id *pci_id) { … } static int snd_via82xx_probe(struct pci_dev *pci, const struct pci_device_id *pci_id) { … } static struct pci_driver via82xx_driver = …; module_pci_driver(…) …;
Codebase Browser
linux