diff options
Diffstat (limited to 'sound/pci/via82xx.c')
| -rw-r--r-- | sound/pci/via82xx.c | 2346 |
1 files changed, 2346 insertions, 0 deletions
diff --git a/sound/pci/via82xx.c b/sound/pci/via82xx.c new file mode 100644 index 00000000000..f1ce808501d --- /dev/null +++ b/sound/pci/via82xx.c @@ -0,0 +1,2346 @@ +/* + * ALSA driver for VIA VT82xx (South Bridge) + * + * VT82C686A/B/C, VT8233A/C, VT8235 + * + * Copyright (c) 2000 Jaroslav Kysela <perex@suse.cz> + * Tjeerd.Mulder <Tjeerd.Mulder@fujitsu-siemens.com> + * 2002 Takashi Iwai <tiwai@suse.de> + * + * 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 + * + */ + +/* + * Changes: + * + * Dec. 19, 2002 Takashi Iwai <tiwai@suse.de> + * - 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. + */ + +#include <sound/driver.h> +#include <asm/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/moduleparam.h> +#include <sound/core.h> +#include <sound/pcm.h> +#include <sound/pcm_params.h> +#include <sound/info.h> +#include <sound/ac97_codec.h> +#include <sound/mpu401.h> +#include <sound/initval.h> + +#if 0 +#define POINTER_DEBUG +#endif + +MODULE_AUTHOR("Jaroslav Kysela <perex@suse.cz>"); +MODULE_DESCRIPTION("VIA VT82xx audio"); +MODULE_LICENSE("GPL"); +MODULE_SUPPORTED_DEVICE("{{VIA,VT82C686A/B/C,pci},{VIA,VT8233A/C,8235}}"); + +#if defined(CONFIG_GAMEPORT) || (defined(MODULE) && defined(CONFIG_GAMEPORT_MODULE)) +#define SUPPORT_JOYSTICK 1 +#endif + +static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX; /* Index 0-MAX */ +static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR; /* ID for this card */ +static int enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP; /* Enable this card */ +static long mpu_port[SNDRV_CARDS]; +#ifdef SUPPORT_JOYSTICK +static int joystick[SNDRV_CARDS]; +#endif +static int ac97_clock[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = 48000}; +static char *ac97_quirk[SNDRV_CARDS]; +static int dxs_support[SNDRV_CARDS]; + +module_param_array(index, int, NULL, 0444); +MODULE_PARM_DESC(index, "Index value for VIA 82xx bridge."); +module_param_array(id, charp, NULL, 0444); +MODULE_PARM_DESC(id, "ID string for VIA 82xx bridge."); +module_param_array(enable, bool, NULL, 0444); +MODULE_PARM_DESC(enable, "Enable audio part of VIA 82xx bridge."); +module_param_array(mpu_port, long, NULL, 0444); +MODULE_PARM_DESC(mpu_port, "MPU-401 port. (VT82C686x only)"); +#ifdef SUPPORT_JOYSTICK +module_param_array(joystick, bool, NULL, 0444); +MODULE_PARM_DESC(joystick, "Enable joystick. (VT82C686x only)"); +#endif +module_param_array(ac97_clock, int, NULL, 0444); +MODULE_PARM_DESC(ac97_clock, "AC'97 codec clock (default 48000Hz)."); +module_param_array(ac97_quirk, charp, NULL, 0444); +MODULE_PARM_DESC(ac97_quirk, "AC'97 workaround for strange hardware."); +module_param_array(dxs_support, int, NULL, 0444); +MODULE_PARM_DESC(dxs_support, "Support for DXS channels (0 = auto, 1 = enable, 2 = disable, 3 = 48k only, 4 = no VRA)"); + + +/* pci ids */ +#ifndef PCI_DEVICE_ID_VIA_82C686_5 +#define PCI_DEVICE_ID_VIA_82C686_5 0x3058 +#endif +#ifndef PCI_DEVICE_ID_VIA_8233_5 +#define PCI_DEVICE_ID_VIA_8233_5 0x3059 +#endif + +/* revision numbers for via686 */ +#define VIA_REV_686_A 0x10 +#define VIA_REV_686_B 0x11 +#define VIA_REV_686_C 0x12 +#define VIA_REV_686_D 0x13 +#define VIA_REV_686_E 0x14 +#define VIA_REV_686_H 0x20 + +/* revision numbers for via8233 */ +#define VIA_REV_PRE_8233 0x10 /* not in market */ +#define VIA_REV_8233C 0x20 /* 2 rec, 4 pb, 1 multi-pb */ +#define VIA_REV_8233 0x30 /* 2 rec, 4 pb, 1 multi-pb, spdif */ +#define VIA_REV_8233A 0x40 /* 1 rec, 1 multi-pb, spdf */ +#define VIA_REV_8235 0x50 /* 2 rec, 4 pb, 1 multi-pb, spdif */ +#define VIA_REV_8237 0x60 + +/* + * Direct registers + */ + +#define VIAREG(via, x) ((via)->port + VIA_REG_##x) +#define VIADEV_REG(viadev, x) ((viadev)->port + VIA_REG_##x) + +/* common offsets */ +#define VIA_REG_OFFSET_STATUS 0x00 /* byte - channel status */ +#define VIA_REG_STAT_ACTIVE 0x80 /* RO */ +#define VIA_REG_STAT_PAUSED 0x40 /* RO */ +#define VIA_REG_STAT_TRIGGER_QUEUED 0x08 /* RO */ +#define VIA_REG_STAT_STOPPED 0x04 /* RWC */ +#define VIA_REG_STAT_EOL 0x02 /* RWC */ +#define VIA_REG_STAT_FLAG 0x01 /* RWC */ +#define VIA_REG_OFFSET_CONTROL 0x01 /* byte - channel control */ +#define VIA_REG_CTRL_START 0x80 /* WO */ +#define VIA_REG_CTRL_TERMINATE 0x40 /* WO */ +#define VIA_REG_CTRL_AUTOSTART 0x20 +#define VIA_REG_CTRL_PAUSE 0x08 /* RW */ +#define VIA_REG_CTRL_INT_STOP 0x04 +#define VIA_REG_CTRL_INT_EOL 0x02 +#define VIA_REG_CTRL_INT_FLAG 0x01 +#define VIA_REG_CTRL_RESET 0x01 /* RW - probably reset? undocumented */ +#define VIA_REG_CTRL_INT (VIA_REG_CTRL_INT_FLAG | VIA_REG_CTRL_INT_EOL | VIA_REG_CTRL_AUTOSTART) +#define VIA_REG_OFFSET_TYPE 0x02 /* byte - channel type (686 only) */ +#define VIA_REG_TYPE_AUTOSTART 0x80 /* RW - autostart at EOL */ +#define VIA_REG_TYPE_16BIT 0x20 /* RW */ +#define VIA_REG_TYPE_STEREO 0x10 /* RW */ +#define VIA_REG_TYPE_INT_LLINE 0x00 +#define VIA_REG_TYPE_INT_LSAMPLE 0x04 +#define VIA_REG_TYPE_INT_LESSONE 0x08 +#define VIA_REG_TYPE_INT_MASK 0x0c +#define VIA_REG_TYPE_INT_EOL 0x02 +#define VIA_REG_TYPE_INT_FLAG 0x01 +#define VIA_REG_OFFSET_TABLE_PTR 0x04 /* dword - channel table pointer */ +#define VIA_REG_OFFSET_CURR_PTR 0x04 /* dword - channel current pointer */ +#define VIA_REG_OFFSET_STOP_IDX 0x08 /* dword - stop index, channel type, sample rate */ +#define VIA8233_REG_TYPE_16BIT 0x00200000 /* RW */ +#define VIA8233_REG_TYPE_STEREO 0x00100000 /* RW */ +#define VIA_REG_OFFSET_CURR_COUNT 0x0c /* dword - channel current count (24 bit) */ +#define VIA_REG_OFFSET_CURR_INDEX 0x0f /* byte - channel current index (for via8233 only) */ + +#define DEFINE_VIA_REGSET(name,val) \ +enum {\ + VIA_REG_##name##_STATUS = (val),\ + VIA_REG_##name##_CONTROL = (val) + 0x01,\ + VIA_REG_##name##_TYPE = (val) + 0x02,\ + VIA_REG_##name##_TABLE_PTR = (val) + 0x04,\ + VIA_REG_##name##_CURR_PTR = (val) + 0x04,\ + VIA_REG_##name##_STOP_IDX = (val) + 0x08,\ + VIA_REG_##name##_CURR_COUNT = (val) + 0x0c,\ +} + +/* playback block */ +DEFINE_VIA_REGSET(PLAYBACK, 0x00); +DEFINE_VIA_REGSET(CAPTURE, 0x10); +DEFINE_VIA_REGSET(FM, 0x20); + +/* AC'97 */ +#define VIA_REG_AC97 0x80 /* dword */ +#define VIA_REG_AC97_CODEC_ID_MASK (3<<30) +#define VIA_REG_AC97_CODEC_ID_SHIFT 30 +#define VIA_REG_AC97_CODEC_ID_PRIMARY 0x00 +#define VIA_REG_AC97_CODEC_ID_SECONDARY 0x01 +#define VIA_REG_AC97_SECONDARY_VALID (1<<27) +#define VIA_REG_AC97_PRIMARY_VALID (1<<25) +#define VIA_REG_AC97_BUSY (1<<24) +#define VIA_REG_AC97_READ (1<<23) +#define VIA_REG_AC97_CMD_SHIFT 16 +#define VIA_REG_AC97_CMD_MASK 0x7e +#define VIA_REG_AC97_DATA_SHIFT 0 +#define VIA_REG_AC97_DATA_MASK 0xffff + +#define VIA_REG_SGD_SHADOW 0x84 /* dword */ +/* via686 */ +#define VIA_REG_SGD_STAT_PB_FLAG (1<<0) +#define VIA_REG_SGD_STAT_CP_FLAG (1<<1) +#define VIA_REG_SGD_STAT_FM_FLAG (1<<2) +#define VIA_REG_SGD_STAT_PB_EOL (1<<4) +#define VIA_REG_SGD_STAT_CP_EOL (1<<5) +#define VIA_REG_SGD_STAT_FM_EOL (1<<6) +#define VIA_REG_SGD_STAT_PB_STOP (1<<8) +#define VIA_REG_SGD_STAT_CP_STOP (1<<9) +#define VIA_REG_SGD_STAT_FM_STOP (1<<10) +#define VIA_REG_SGD_STAT_PB_ACTIVE (1<<12) +#define VIA_REG_SGD_STAT_CP_ACTIVE (1<<13) +#define VIA_REG_SGD_STAT_FM_ACTIVE (1<<14) +/* via8233 */ +#define VIA8233_REG_SGD_STAT_FLAG (1<<0) +#define VIA8233_REG_SGD_STAT_EOL (1<<1) +#define VIA8233_REG_SGD_STAT_STOP (1<<2) +#define VIA8233_REG_SGD_STAT_ACTIVE (1<<3) +#define VIA8233_INTR_MASK(chan) ((VIA8233_REG_SGD_STAT_FLAG|VIA8233_REG_SGD_STAT_EOL) << ((chan) * 4)) +#define VIA8233_REG_SGD_CHAN_SDX 0 +#define VIA8233_REG_SGD_CHAN_MULTI 4 +#define VIA8233_REG_SGD_CHAN_REC 6 +#define VIA8233_REG_SGD_CHAN_REC1 7 + +#define VIA_REG_GPI_STATUS 0x88 +#define VIA_REG_GPI_INTR 0x8c + +/* 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 0x02 /* byte */ +#define VIA_REG_OFS_PLAYBACK_VOLUME_R 0x03 /* byte */ +#define VIA_REG_OFS_MULTPLAY_FORMAT 0x02 /* byte - format and channels */ +#define VIA_REG_MULTPLAY_FMT_8BIT 0x00 +#define VIA_REG_MULTPLAY_FMT_16BIT 0x80 +#define VIA_REG_MULTPLAY_FMT_CH_MASK 0x70 /* # channels << 4 (valid = 1,2,4,6) */ +#define VIA_REG_OFS_CAPTURE_FIFO 0x02 /* byte - bit 6 = fifo enable */ +#define VIA_REG_CAPTURE_FIFO_ENABLE 0x40 + +#define VIA_DXS_MAX_VOLUME 31 /* max. volume (attenuation) of reg 0x32/33 */ + +#define VIA_REG_CAPTURE_CHANNEL 0x63 /* byte - input select */ +#define VIA_REG_CAPTURE_CHANNEL_MIC 0x4 +#define VIA_REG_CAPTURE_CHANNEL_LINE 0 +#define VIA_REG_CAPTURE_SELECT_CODEC 0x03 /* recording source codec (0 = primary) */ + +#define VIA_TBL_BIT_FLAG 0x40000000 +#define VIA_TBL_BIT_EOL 0x80000000 + +/* pci space */ +#define VIA_ACLINK_STAT 0x40 +#define VIA_ACLINK_C11_READY 0x20 +#define VIA_ACLINK_C10_READY 0x10 +#define VIA_ACLINK_C01_READY 0x04 /* secondary codec ready */ +#define VIA_ACLINK_LOWPOWER 0x02 /* low-power state */ +#define VIA_ACLINK_C00_READY 0x01 /* primary codec ready */ +#define VIA_ACLINK_CTRL 0x41 +#define VIA_ACLINK_CTRL_ENABLE 0x80 /* 0: disable, 1: enable */ +#define VIA_ACLINK_CTRL_RESET 0x40 /* 0: assert, 1: de-assert */ +#define VIA_ACLINK_CTRL_SYNC 0x20 /* 0: release SYNC, 1: force SYNC hi */ +#define VIA_ACLINK_CTRL_SDO 0x10 /* 0: release SDO, 1: force SDO hi */ +#define VIA_ACLINK_CTRL_VRA 0x08 /* 0: disable VRA, 1: enable VRA */ +#define VIA_ACLINK_CTRL_PCM 0x04 /* 0: disable PCM, 1: enable PCM */ +#define VIA_ACLINK_CTRL_FM 0x02 /* via686 only */ +#define VIA_ACLINK_CTRL_SB 0x01 /* via686 only */ +#define VIA_ACLINK_CTRL_INIT (VIA_ACLINK_CTRL_ENABLE|\ + VIA_ACLINK_CTRL_RESET|\ + VIA_ACLINK_CTRL_PCM|\ + VIA_ACLINK_CTRL_VRA) +#define VIA_FUNC_ENABLE 0x42 +#define VIA_FUNC_MIDI_PNP 0x80 /* FIXME: it's 0x40 in the datasheet! */ +#define VIA_FUNC_MIDI_IRQMASK 0x40 /* FIXME: not documented! */ +#define VIA_FUNC_RX2C_WRITE 0x20 +#define VIA_FUNC_SB_FIFO_EMPTY 0x10 +#define VIA_FUNC_ENABLE_GAME 0x08 +#define VIA_FUNC_ENABLE_FM 0x04 +#define VIA_FUNC_ENABLE_MIDI 0x02 +#define VIA_FUNC_ENABLE_SB 0x01 +#define VIA_PNP_CONTROL 0x43 +#define VIA_FM_NMI_CTRL 0x48 +#define VIA8233_VOLCHG_CTRL 0x48 +#define VIA8233_SPDIF_CTRL 0x49 +#define VIA8233_SPDIF_DX3 0x08 +#define VIA8233_SPDIF_SLOT_MASK 0x03 +#define VIA8233_SPDIF_SLOT_1011 0x00 +#define VIA8233_SPDIF_SLOT_34 0x01 +#define VIA8233_SPDIF_SLOT_78 0x02 +#define VIA8233_SPDIF_SLOT_69 0x03 + +/* + */ + +#define VIA_DXS_AUTO 0 +#define VIA_DXS_ENABLE 1 +#define VIA_DXS_DISABLE 2 +#define VIA_DXS_48K 3 +#define VIA_DXS_NO_VRA 4 + + +/* + */ + +typedef struct _snd_via82xx via82xx_t; +typedef struct via_dev viadev_t; + +/* + * pcm stream + */ + +struct snd_via_sg_table { + unsigned int offset; + unsigned int size; +} ; + +#define VIA_TABLE_SIZE 255 + +struct via_dev { + unsigned int reg_offset; + unsigned long port; + int direction; /* playback = 0, capture = 1 */ + snd_pcm_substream_t *substream; + int running; + unsigned int tbl_entries; /* # descriptors */ + struct snd_dma_buffer table; + struct snd_via_sg_table *idx_table; + /* for recovery from the unexpected pointer */ + unsigned int lastpos; + unsigned int fragsize; + unsigned int bufsize; + unsigned int bufsize2; +}; + + +enum { TYPE_CARD_VIA686 = 1, TYPE_CARD_VIA8233 }; +enum { TYPE_VIA686, TYPE_VIA8233, TYPE_VIA8233A }; + +#define VIA_MAX_DEVS 7 /* 4 playback, 1 multi, 2 capture */ + +struct via_rate_lock { + spinlock_t lock; + int rate; + int used; +}; + +struct _snd_via82xx { + int irq; + + unsigned long port; + struct resource *mpu_res; + int chip_type; + unsigned char revision; + + unsigned char old_legacy; + unsigned char old_legacy_cfg; +#ifdef CONFIG_PM + unsigned char legacy_saved; + unsigned char legacy_cfg_saved; + unsigned char spdif_ctrl_saved; + unsigned char capture_src_saved[2]; + unsigned int mpu_port_saved; +#endif + + unsigned char playback_volume[2]; /* for VIA8233/C/8235; default = 0 */ + + unsigned int intr_mask; /* SGD_SHADOW mask to check interrupts */ + + struct pci_dev *pci; + snd_card_t *card; + + unsigned int num_devs; + unsigned int playback_devno, multi_devno, capture_devno; + viadev_t devs[VIA_MAX_DEVS]; + struct via_rate_lock rates[2]; /* playback and capture */ + unsigned int dxs_fixed: 1; /* DXS channel accepts only 48kHz */ + unsigned int no_vra: 1; /* no need to set VRA on DXS channels */ + unsigned int spdif_on: 1; /* only spdif rates work to external DACs */ + + snd_pcm_t *pcms[2]; + snd_rawmidi_t *rmidi; + + ac97_bus_t *ac97_bus; + ac97_t *ac97; + unsigned int ac97_clock; + unsigned int ac97_secondary; /* secondary AC'97 codec is present */ + + spinlock_t reg_lock; + snd_info_entry_t *proc_entry; + +#ifdef SUPPORT_JOYSTICK + struct gameport *gameport; +#endif +}; + +static struct pci_device_id snd_via82xx_ids[] = { + { 0x1106, 0x3058, PCI_ANY_ID, PCI_ANY_ID, 0, 0, TYPE_CARD_VIA686, }, /* 686A */ + { 0x1106, 0x3059, PCI_ANY_ID, PCI_ANY_ID, 0, 0, TYPE_CARD_VIA8233, }, /* VT8233 */ + { 0, } +}; + +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(viadev_t *dev, snd_pcm_substream_t *substream, + struct pci_dev *pci, + unsigned int periods, unsigned int fragsize) +{ + unsigned int i, idx, ofs, rest; + via82xx_t *chip = snd_pcm_substream_chip(substream); + struct snd_sg_buf *sgbuf = snd_pcm_substream_sgbuf(substream); + + if (dev->table.area == NULL) { + /* the start of each lists must be aligned to 8 bytes, + * but the kernel pages are much bigger, so we don't care + */ + if (snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, snd_dma_pci_data(chip->pci), + PAGE_ALIGN(VIA_TABLE_SIZE * 2 * 8), + &dev->table) < 0) + return -ENOMEM; + } + if (! dev->idx_table) { + dev->idx_table = kmalloc(sizeof(*dev->idx_table) * VIA_TABLE_SIZE, GFP_KERNEL); + if (! dev->idx_table) + return -ENOMEM; + } + + /* fill the entries */ + idx = 0; + ofs = 0; + for (i = 0; i < periods; i++) { + rest = fragsize; + /* fill descriptors for a period. + * a period can be split to several descriptors if it's + * over page boundary. + */ + do { + unsigned int r; + unsigned int flag; + + if (idx >= VIA_TABLE_SIZE) { + snd_printk(KERN_ERR "via82xx: too much table size!\n"); + return -EINVAL; + } + ((u32 *)dev->table.area)[idx << 1] = cpu_to_le32((u32)snd_pcm_sgbuf_get_addr(sgbuf, ofs)); + r = PAGE_SIZE - (ofs % PAGE_SIZE); + if (rest < r) + r = rest; + rest -= r; + if (! rest) { + if (i == periods - 1) + flag = VIA_TBL_BIT_EOL; /* buffer boundary */ + else + flag = VIA_TBL_BIT_FLAG; /* period boundary */ + } else + flag = 0; /* period continues to the next */ + // printk("via: tbl %d: at %d size %d (rest %d)\n", idx, ofs, r, rest); + ((u32 *)dev->table.area)[(idx<<1) + 1] = cpu_to_le32(r | flag); + dev->idx_table[idx].offset = ofs; + dev->idx_table[idx].size = r; + ofs += r; + idx++; + } while (rest > 0); + } + dev->tbl_entries = idx; + dev->bufsize = periods * fragsize; + dev->bufsize2 = dev->bufsize / 2; + dev->fragsize = fragsize; + return 0; +} + + +static int clean_via_table(viadev_t *dev, snd_pcm_substream_t *substream, + struct pci_dev *pci) +{ + if (dev->table.area) { + snd_dma_free_pages(&dev->table); + dev->table.area = NULL; + } + if (dev->idx_table) { + kfree(dev->idx_table); + dev->idx_table = NULL; + } + return 0; +} + +/* + * Basic I/O + */ + +static inline unsigned int snd_via82xx_codec_xread(via82xx_t *chip) +{ + return inl(VIAREG(chip, AC97)); +} + +static inline void snd_via82xx_codec_xwrite(via82xx_t *chip, unsigned int val) +{ + outl(val, VIAREG(chip, AC97)); +} + +static int snd_via82xx_codec_ready(via82xx_t *chip, int secondary) +{ + unsigned int timeout = 1000; /* 1ms */ + unsigned int val; + + while (timeout-- > 0) { + udelay(1); + if (!((val = snd_via82xx_codec_xread(chip)) & VIA_REG_AC97_BUSY)) + return val & 0xffff; + } + snd_printk(KERN_ERR "codec_ready: codec %i is not ready [0x%x]\n", secondary, snd_via82xx_codec_xread(chip)); + return -EIO; +} + +static int snd_via82xx_codec_valid(via82xx_t *chip, int secondary) +{ + unsigned int timeout = 1000; /* 1ms */ + unsigned int val, val1; + unsigned int stat = !secondary ? VIA_REG_AC97_PRIMARY_VALID : + VIA_REG_AC97_SECONDARY_VALID; + + while (timeout-- > 0) { + val = snd_via82xx_codec_xread(chip); + val1 = val & (VIA_REG_AC97_BUSY | stat); + if (val1 == stat) + return val & 0xffff; + udelay(1); + } + return -EIO; +} + +static void snd_via82xx_codec_wait(ac97_t *ac97) +{ + via82xx_t *chip = ac97->private_data; + int err; + err = snd_via82xx_codec_ready(chip, ac97->num); + /* here we need to wait fairly for long time.. */ + set_current_state(TASK_UNINTERRUPTIBLE); + schedule_timeout(HZ/2); +} + +static void snd_via82xx_codec_write(ac97_t *ac97, + unsigned short reg, + unsigned short val) +{ + via82xx_t *chip = ac97->private_data; + unsigned int xval; + + xval = !ac97->num ? VIA_REG_AC97_CODEC_ID_PRIMARY : VIA_REG_AC97_CODEC_ID_SECONDARY; + xval <<= VIA_REG_AC97_CODEC_ID_SHIFT; + xval |= reg << VIA_REG_AC97_CMD_SHIFT; + xval |= val << VIA_REG_AC97_DATA_SHIFT; + snd_via82xx_codec_xwrite(chip, xval); + snd_via82xx_codec_ready(chip, ac97->num); +} + +static unsigned short snd_via82xx_codec_read(ac97_t *ac97, unsigned short reg) +{ + via82xx_t *chip = ac97->private_data; + unsigned int xval, val = 0xffff; + int again = 0; + + xval = ac97->num << VIA_REG_AC97_CODEC_ID_SHIFT; + xval |= ac97->num ? VIA_REG_AC97_SECONDARY_VALID : VIA_REG_AC97_PRIMARY_VALID; + xval |= VIA_REG_AC97_READ; + xval |= (reg & 0x7f) << VIA_REG_AC97_CMD_SHIFT; + while (1) { + if (again++ > 3) { + snd_printk(KERN_ERR "codec_read: codec %i is not valid [0x%x]\n", ac97->num, snd_via82xx_codec_xread(chip)); + return 0xffff; + } + snd_via82xx_codec_xwrite(chip, xval); + udelay (20); + if (snd_via82xx_codec_valid(chip, ac97->num) >= 0) { + udelay(25); + val = snd_via82xx_codec_xread(chip); + break; + } + } + return val & 0xffff; +} + +static void snd_via82xx_channel_reset(via82xx_t *chip, viadev_t *viadev) +{ + outb(VIA_REG_CTRL_PAUSE | VIA_REG_CTRL_TERMINATE | VIA_REG_CTRL_RESET, + VIADEV_REG(viadev, OFFSET_CONTROL)); + inb(VIADEV_REG(viadev, OFFSET_CONTROL)); + udelay(50); + /* disable interrupts */ + outb(0x00, VIADEV_REG(viadev, OFFSET_CONTROL)); + /* clear interrupts */ + outb(0x03, VIADEV_REG(viadev, OFFSET_STATUS)); + outb(0x00, VIADEV_REG(viadev, OFFSET_TYPE)); /* for via686 */ + // outl(0, VIADEV_REG(viadev, OFFSET_CURR_PTR)); + viadev->lastpos = 0; +} + + +/* + * Interrupt handler + */ + +static irqreturn_t snd_via82xx_interrupt(int irq, void *dev_id, struct pt_regs *regs) +{ + via82xx_t *chip = dev_id; + unsigned int status; + unsigned int i; + + status = inl(VIAREG(chip, SGD_SHADOW)); + if (! (status & chip->intr_mask)) { + if (chip->rmidi) + /* check mpu401 interrupt */ + return snd_mpu401_uart_interrupt(irq, chip->rmidi->private_data, regs); + return IRQ_NONE; + } + + /* check status for each stream */ + spin_lock(&chip->reg_lock); + for (i = 0; i < chip->num_devs; i++) { + viadev_t *viadev = &chip->devs[i]; + unsigned char c_status = inb(VIADEV_REG(viadev, OFFSET_STATUS)); + c_status &= (VIA_REG_STAT_EOL|VIA_REG_STAT_FLAG|VIA_REG_STAT_STOPPED); + if (! c_status) + continue; + if (viadev->substream && viadev->running) { + spin_unlock(&chip->reg_lock); + snd_pcm_period_elapsed(viadev->substream); + spin_lock(&chip->reg_lock); + } + outb(c_status, VIADEV_REG(viadev, OFFSET_STATUS)); /* ack */ + } + spin_unlock(&chip->reg_lock); + return IRQ_HANDLED; +} + +/* + * PCM callbacks + */ + +/* + * trigger callback + */ +static int snd_via82xx_pcm_trigger(snd_pcm_substream_t * substream, int cmd) +{ + via82xx_t *chip = snd_pcm_substream_chip(substream); + viadev_t *viadev = (viadev_t *)substream->runtime->private_data; + unsigned char val; + + if (chip->chip_type != TYPE_VIA686) + val = VIA_REG_CTRL_INT; + else + val = 0; + switch (cmd) { + case SNDRV_PCM_TRIGGER_START: + val |= VIA_REG_CTRL_START; + viadev->running = 1; + break; + case SNDRV_PCM_TRIGGER_STOP: + val = VIA_REG_CTRL_TERMINATE; + viadev->running = 0; + break; + case SNDRV_PCM_TRIGGER_PAUSE_PUSH: + val |= VIA_REG_CTRL_PAUSE; + viadev->running = 0; + break; + case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: + viadev->running = 1; + break; + default: + return -EINVAL; + } + outb(val, VIADEV_REG(viadev, OFFSET_CONTROL)); + if (cmd == SNDRV_PCM_TRIGGER_STOP) + snd_via82xx_channel_reset(chip, viadev); + return 0; +} + + +/* + * pointer callbacks + */ + +/* + * calculate the linear position at the given sg-buffer index and the rest count + */ + +#define check_invalid_pos(viadev,pos) \ + ((pos) < viadev->lastpos && ((pos) >= viadev->bufsize2 || viadev->lastpos < viadev->bufsize2)) + +static inline unsigned int calc_linear_pos(viadev_t *viadev, unsigned int idx, unsigned int count) +{ + unsigned int size, base, res; + + size = viadev->idx_table[idx].size; + base = viadev->idx_table[idx].offset; + res = base + size - count; + + /* check the validity of the calculated position */ + if (size < count) { + snd_printd(KERN_ERR "invalid via82xx_cur_ptr (size = %d, count = %d)\n", (int)size, (int)count); + res = viadev->lastpos; + } else { + if (! count) { + /* Some mobos report count = 0 on the DMA boundary, + * i.e. count = size indeed. + * Let's check whether this step is above the expected size. + */ + int delta = res - viadev->lastpos; + if (delta < 0) + delta += viadev->bufsize; + if ((unsigned int)delta > viadev->fragsize) + res = base; + } + if (check_invalid_pos(viadev, res)) { +#ifdef POINTER_DEBUG + printk(KERN_DEBUG "fail: idx = %i/%i, lastpos = 0x%x, bufsize2 = 0x%x, offsize = 0x%x, size = 0x%x, count = 0x%x\n", idx, viadev->tbl_entries, viadev->lastpos, viadev->bufsize2, viadev->idx_table[idx].offset, viadev->idx_table[idx].size, count); +#endif + /* count register returns full size when end of buffer is reached */ + res = base + size; + if (check_invalid_pos(viadev, res)) { + snd_printd(KERN_ERR "invalid via82xx_cur_ptr (2), using last valid pointer\n"); + res = viadev->lastpos; + } + } + } + viadev->lastpos = res; /* remember the last position */ + if (res >= viadev->bufsize) + res -= viadev->bufsize; + return res; +} + +/* + * get the current pointer on via686 + */ +static snd_pcm_uframes_t snd_via686_pcm_pointer(snd_pcm_substream_t *substream) +{ + via82xx_t *chip = snd_pcm_substream_chip(substream); + viadev_t *viadev = (viadev_t *)substream->runtime->private_data; + unsigned int idx, ptr, count, res; + + snd_assert(viadev->tbl_entries, return 0); + if (!(inb(VIADEV_REG(viadev, OFFSET_STATUS)) & VIA_REG_STAT_ACTIVE)) + return 0; + + spin_lock(&chip->reg_lock); + count = inl(VIADEV_REG(viadev, OFFSET_CURR_COUNT)) & 0xffffff; + /* The via686a does not have the current index register, + * so we need to calculate the index from CURR_PTR. + */ + ptr = inl(VIADEV_REG(viadev, OFFSET_CURR_PTR)); + if (ptr <= (unsigned int)viadev->table.addr) + idx = 0; + else /* CURR_PTR holds the address + 8 */ + idx = ((ptr - (unsigned int)viadev->table.addr) / 8 - 1) % viadev->tbl_entries; + res = calc_linear_pos(viadev, idx, count); + spin_unlock(&chip->reg_lock); + + return bytes_to_frames(substream->runtime, res); +} + +/* + * get the current pointer on via823x + */ +static snd_pcm_uframes_t snd_via8233_pcm_pointer(snd_pcm_substream_t *substream) +{ + via82xx_t *chip = snd_pcm_substream_chip(substream); + viadev_t *viadev = (viadev_t *)substream->runtime->private_data; + unsigned int idx, count, res; + int timeout = 5000; + + snd_assert(viadev->tbl_entries, return 0); + if (!(inb(VIADEV_REG(viadev, OFFSET_STATUS)) & VIA_REG_STAT_ACTIVE)) + return 0; + spin_lock(&chip->reg_lock); + do { + count = inl(VIADEV_REG(viadev, OFFSET_CURR_COUNT)); + /* some mobos read 0 count */ + if ((count & 0xffffff) || ! viadev->running) + break; + } while (--timeout); + if (! timeout) + snd_printd(KERN_ERR "zero position is read\n"); + idx = count >> 24; + if (idx >= viadev->tbl_entries) { +#ifdef POINTER_DEBUG + printk("fail: invalid idx = %i/%i\n", idx, viadev->tbl_entries); +#endif + res = viadev->lastpos; + } else { + count &= 0xffffff; + res = calc_linear_pos(viadev, idx, count); + } + spin_unlock(&chip->reg_lock); + + return bytes_to_frames(substream->runtime, res); +} + + +/* + * hw_params callback: + * allocate the buffer and build up the buffer description table + */ +static int snd_via82xx_hw_params(snd_pcm_substream_t * substream, + snd_pcm_hw_params_t * hw_params) +{ + via82xx_t *chip = snd_pcm_substream_chip(substream); + viadev_t *viadev = (viadev_t *)substream->runtime->private_data; + int err; + + err = snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params)); + if (err < 0) + return err; + err = build_via_table(viadev, substream, chip->pci, + params_periods(hw_params), + params_period_bytes(hw_params)); + if (err < 0) + return err; + + return 0; +} + +/* + * hw_free callback: + * clean up the buffer description table and release the buffer + */ +static int snd_via82xx_hw_free(snd_pcm_substream_t * substream) +{ + via82xx_t *chip = snd_pcm_substream_chip(substream); + viadev_t *viadev = (viadev_t *)substream->runtime->private_data; + + clean_via_table(viadev, substream, chip->pci); + snd_pcm_lib_free_pages(substream); + return 0; +} + + +/* + * set up the table pointer + */ +static void snd_via82xx_set_table_ptr(via82xx_t *chip, viadev_t *viadev) +{ + snd_via82xx_codec_ready(chip, 0); + outl((u32)viadev->table.addr, VIADEV_REG(viadev, OFFSET_TABLE_PTR)); + udelay(20); + snd_via82xx_codec_ready(chip, 0); +} + +/* + * prepare callback for playback and capture on via686 + */ +static void via686_setup_format(via82xx_t *chip, viadev_t *viadev, snd_pcm_runtime_t *runtime) +{ + snd_via82xx_channel_reset(chip, viadev); + /* this must be set after channel_reset */ + snd_via82xx_set_table_ptr(chip, viadev); + outb(VIA_REG_TYPE_AUTOSTART | + (runtime->format == SNDRV_PCM_FORMAT_S16_LE ? VIA_REG_TYPE_16BIT : 0) | + (runtime->channels > 1 ? VIA_REG_TYPE_STEREO : 0) | + ((viadev->reg_offset & 0x10) == 0 ? VIA_REG_TYPE_INT_LSAMPLE : 0) | + VIA_REG_TYPE_INT_EOL | + VIA_REG_TYPE_INT_FLAG, VIADEV_REG(viadev, OFFSET_TYPE)); +} + +static int snd_via686_playback_prepare(snd_pcm_substream_t *substream) +{ + via82xx_t *chip = snd_pcm_substream_chip(substream); + viadev_t *viadev = (viadev_t *)substream->runtime->private_data; + snd_pcm_runtime_t *runtime = substream->runtime; + + snd_ac97_set_rate(chip->ac97, AC97_PCM_FRONT_DAC_RATE, runtime->rate); + snd_ac97_set_rate(chip->ac97, AC97_SPDIF, runtime->rate); + via686_setup_format(chip, viadev, runtime); + return 0; +} + +static int snd_via686_capture_prepare(snd_pcm_substream_t *substream) +{ + via82xx_t *chip = snd_pcm_substream_chip(substream); + viadev_t *viadev = (viadev_t *)substream->runtime->private_data; + snd_pcm_runtime_t *runtime = substream->runtime; + + snd_ac97_set_rate(chip->ac97, AC97_PCM_LR_ADC_RATE, runtime->rate); + via686_setup_format(chip, viadev, runtime); + return 0; +} + +/* + * lock the current rate + */ +static int via_lock_rate(struct via_rate_lock *rec, int rate) +{ + int changed = 0; + + spin_lock_irq(&rec->lock); + if (rec->rate != rate) { + if (rec->rate && rec->used > 1) /* already set */ + changed = -EINVAL; + else { + rec->rate = rate; + changed = 1; + } + } + spin_unlock_irq(&rec->lock); + return changed; +} + +/* + * prepare callback for DSX playback on via823x + */ +static int snd_via8233_playback_prepare(snd_pcm_substream_t *substream) +{ + via82xx_t *chip = snd_pcm_substream_chip(substream); + viadev_t *viadev = (viadev_t *)substream->runtime->private_data; + snd_pcm_runtime_t *runtime = substream->runtime; + int rate_changed; + u32 rbits; + + if ((rate_changed = via_lock_rate(&chip->rates[0], runtime->rate)) < 0) + return rate_changed; + if (rate_changed) { + snd_ac97_set_rate(chip->ac97, AC97_PCM_FRONT_DAC_RATE, + chip->no_vra ? 48000 : runtime->rate); + snd_ac97_set_rate(chip->ac97, AC97_SPDIF, runtime->rate); + } + if (runtime->rate == 48000) + rbits = 0xfffff; + else + rbits = (0x100000 / 48000) * runtime->rate + ((0x100000 % 48000) * runtime->rate) / 48000; + snd_assert((rbits & ~0xfffff) == 0, return -EINVAL); + snd_via82xx_channel_reset(chip, viadev); + snd_via82xx_set_table_ptr(chip, viadev); + outb(chip->playback_volume[0], VIADEV_REG(viadev, OFS_PLAYBACK_VOLUME_L)); + outb(chip->playback_volume[1], VIADEV_REG(viadev, OFS_PLAYBACK_VOLUME_R)); + outl((runtime->format == SNDRV_PCM_FORMAT_S16_LE ? VIA8233_REG_TYPE_16BIT : 0) | /* format */ + (runtime->channels > 1 ? VIA8233_REG_TYPE_STEREO : 0) | /* stereo */ + rbits | /* rate */ + 0xff000000, /* STOP index is never reached */ + VIADEV_REG(viadev, OFFSET_STOP_IDX)); + udelay(20); + snd_via82xx_codec_ready(chip, 0); + return 0; +} + +/* + * prepare callback for multi-channel playback on via823x + */ +static int snd_via8233_multi_prepare(snd_pcm_substream_t *substream) +{ + via82xx_t *chip = snd_pcm_substream_chip(substream); + viadev_t *viadev = (viadev_t *)substream->runtime->private_data; + snd_pcm_runtime_t *runtime = substream->runtime; + unsigned int slots; + int fmt; + + if (via_lock_rate(&chip->rates[0], runtime->rate) < 0) + return -EINVAL; + snd_ac97_set_rate(chip->ac97, AC97_PCM_FRONT_DAC_RATE, runtime->rate); + snd_ac97_set_rate(chip->ac97, AC97_PCM_SURR_DAC_RATE, runtime->rate); + snd_ac97_set_rate(chip->ac97, AC97_PCM_LFE_DAC_RATE, runtime->rate); + snd_ac97_set_rate(chip->ac97, AC97_SPDIF, runtime->rate); + snd_via82xx_channel_reset(chip, viadev); + snd_via82xx_set_table_ptr(chip, viadev); + + fmt = (runtime->format == SNDRV_PCM_FORMAT_S16_LE) ? VIA_REG_MULTPLAY_FMT_16BIT : VIA_REG_MULTPLAY_FMT_8BIT; + fmt |= runtime->channels << 4; + outb(fmt, VIADEV_REG(viadev, OFS_MULTPLAY_FORMAT)); +#if 0 + if (chip->revision == VIA_REV_8233A) + slots = 0; + else +#endif + { + /* set sample number to slot 3, 4, 7, 8, 6, 9 (for VIA8233/C,8235) */ + /* corresponding to FL, FR, RL, RR, C, LFE ?? */ + switch (runtime->channels) { + case 1: slots = (1<<0) | (1<<4); break; + case 2: slots = (1<<0) | (2<<4); break; + case 3: slots = (1<<0) | (2<<4) | (5<<8); break; + case 4: slots = (1<<0) | (2<<4) | (3<<8) | (4<<12); break; + case 5: slots = (1<<0) | (2<<4) | (3<<8) | (4<<12) | (5<<16); break; + case 6: slots = (1<<0) | (2<<4) | (3<<8) | (4<<12) | (5<<16) | (6<<20); break; + default: slots = 0; break; + } + } + /* STOP index is never reached */ + outl(0xff000000 | slots, VIADEV_REG(viadev, OFFSET_STOP_IDX)); + udelay(20); + snd_via82xx_codec_ready(chip, 0); + return 0; +} + +/* + * prepare callback for capture on via823x + */ +static int snd_via8233_capture_prepare(snd_pcm_substream_t *substream) +{ + via82xx_t *chip = snd_pcm_substream_chip(substream); + viadev_t *viadev = (viadev_t *)substream->runtime->private_data; + snd_pcm_runtime_t *runtime = substream->runtime; + + if (via_lock_rate(&chip->rates[1], runtime->rate) < 0) + return -EINVAL; + snd_ac97_set_rate(chip->ac97, AC97_PCM_LR_ADC_RATE, runtime->rate); + snd_via82xx_channel_reset(chip, viadev); + snd_via82xx_set_table_ptr(chip, viadev); + outb(VIA_REG_CAPTURE_FIFO_ENABLE, VIADEV_REG(viadev, OFS_CAPTURE_FIFO)); + outl((runtime->format == SNDRV_PCM_FORMAT_S16_LE ? VIA8233_REG_TYPE_16BIT : 0) | + (runtime->channels > 1 ? VIA8233_REG_TYPE_STEREO : 0) | + 0xff000000, /* STOP index is never reached */ + VIADEV_REG(viadev, OFFSET_STOP_IDX)); + udelay(20); + snd_via82xx_codec_ready(chip, 0); + return 0; +} + + +/* + * pcm hardware definition, identical for both playback and capture + */ +static snd_pcm_hardware_t snd_via82xx_hw = +{ + .info = (SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED | + SNDRV_PCM_INFO_BLOCK_TRANSFER | + SNDRV_PCM_INFO_MMAP_VALID | + SNDRV_PCM_INFO_RESUME | + SNDRV_PCM_INFO_PAUSE), + .formats = SNDRV_PCM_FMTBIT_U8 | SNDRV_PCM_FMTBIT_S16_LE, + .rates = SNDRV_PCM_RATE_48000, + .rate_min = 48000, + .rate_max = 48000, + .channels_min = 1, + .channels_max = 2, + .buffer_bytes_max = 128 * 1024, + .period_bytes_min = 32, + .period_bytes_max = 128 * 1024, + .periods_min = 2, + .periods_max = VIA_TABLE_SIZE / 2, + .fifo_size = 0, +}; + + +/* + * open callback skeleton + */ +static int snd_via82xx_pcm_open(via82xx_t *chip, viadev_t *viadev, snd_pcm_substream_t * substream) +{ + snd_pcm_runtime_t *runtime = substream->runtime; + int err; + struct via_rate_lock *ratep; + + runtime->hw = snd_via82xx_hw; + + /* set the hw rate condition */ + ratep = &chip->rates[viadev->direction]; + spin_lock_irq(&ratep->lock); + ratep->used++; + if (chip->spdif_on && viadev->reg_offset == 0x30) { + /* DXS#3 and spdif is on */ + runtime->hw.rates = chip->ac97->rates[AC97_RATES_SPDIF]; + snd_pcm_limit_hw_rates(runtime); + } else if (chip->dxs_fixed && viadev->reg_offset < 0x40) { + /* fixed DXS playback rate */ + runtime->hw.rates = SNDRV_PCM_RATE_48000; + runtime->hw.rate_min = runtime->hw.rate_max = 48000; + } else if (! ratep->rate) { + int idx = viadev->direction ? AC97_RATES_ADC : AC97_RATES_FRONT_DAC; + runtime->hw.rates = chip->ac97->rates[idx]; + snd_pcm_limit_hw_rates(runtime); + } else { + /* a fixed rate */ + runtime->hw.rates = SNDRV_PCM_RATE_KNOT; + runtime->hw.rate_max = runtime->hw.rate_min = ratep-> |