diff options
Diffstat (limited to 'ANDROID_3.4.5/sound/pci/via82xx_modem.c')
| -rw-r--r-- | ANDROID_3.4.5/sound/pci/via82xx_modem.c | 1248 |
1 files changed, 0 insertions, 1248 deletions
diff --git a/ANDROID_3.4.5/sound/pci/via82xx_modem.c b/ANDROID_3.4.5/sound/pci/via82xx_modem.c deleted file mode 100644 index 5efcbcac..00000000 --- a/ANDROID_3.4.5/sound/pci/via82xx_modem.c +++ /dev/null @@ -1,1248 +0,0 @@ -/* - * ALSA modem driver for VIA VT82xx (South Bridge) - * - * VT82C686A/B/C, VT8233A/C, VT8235 - * - * Copyright (c) 2000 Jaroslav Kysela <perex@perex.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: - * - * Sep. 2, 2004 Sasha Khapyorsky <sashak@alsa-project.org> - * Modified from original audio driver 'via82xx.c' to support AC97 - * modems. - */ - -#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/module.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/initval.h> - -#if 0 -#define POINTER_DEBUG -#endif - -MODULE_AUTHOR("Jaroslav Kysela <perex@perex.cz>"); -MODULE_DESCRIPTION("VIA VT82xx modem"); -MODULE_LICENSE("GPL"); -MODULE_SUPPORTED_DEVICE("{{VIA,VT82C686A/B/C modem,pci}}"); - -static int index = -2; /* Exclude the first card */ -static char *id = SNDRV_DEFAULT_STR1; /* ID for this card */ -static int ac97_clock = 48000; - -module_param(index, int, 0444); -MODULE_PARM_DESC(index, "Index value for VIA 82xx bridge."); -module_param(id, charp, 0444); -MODULE_PARM_DESC(id, "ID string for VIA 82xx bridge."); -module_param(ac97_clock, int, 0444); -MODULE_PARM_DESC(ac97_clock, "AC'97 codec clock (default 48000Hz)."); - -/* just for backward compatibility */ -static bool enable; -module_param(enable, bool, 0444); - - -/* - * 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 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,\ -} - -/* modem block */ -DEFINE_VIA_REGSET(MO, 0x40); -DEFINE_VIA_REGSET(MI, 0x50); - -/* 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 */ -#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) -#define VIA_REG_SGD_STAT_MR_FLAG (1<<16) -#define VIA_REG_SGD_STAT_MW_FLAG (1<<17) -#define VIA_REG_SGD_STAT_MR_EOL (1<<20) -#define VIA_REG_SGD_STAT_MW_EOL (1<<21) -#define VIA_REG_SGD_STAT_MR_STOP (1<<24) -#define VIA_REG_SGD_STAT_MW_STOP (1<<25) -#define VIA_REG_SGD_STAT_MR_ACTIVE (1<<28) -#define VIA_REG_SGD_STAT_MW_ACTIVE (1<<29) - -#define VIA_REG_GPI_STATUS 0x88 -#define VIA_REG_GPI_INTR 0x8c - -#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) -#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_MC97_CTRL 0x44 -#define VIA_MC97_CTRL_ENABLE 0x80 -#define VIA_MC97_CTRL_SECONDARY 0x40 -#define VIA_MC97_CTRL_INIT (VIA_MC97_CTRL_ENABLE|\ - VIA_MC97_CTRL_SECONDARY) - - -/* - * pcm stream - */ - -struct snd_via_sg_table { - unsigned int offset; - unsigned int size; -} ; - -#define VIA_TABLE_SIZE 255 - -struct viadev { - unsigned int reg_offset; - unsigned long port; - int direction; /* playback = 0, capture = 1 */ - struct snd_pcm_substream *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 bufsize; - unsigned int bufsize2; -}; - -enum { TYPE_CARD_VIA82XX_MODEM = 1 }; - -#define VIA_MAX_MODEM_DEVS 2 - -struct via82xx_modem { - int irq; - - unsigned long port; - - unsigned int intr_mask; /* SGD_SHADOW mask to check interrupts */ - - struct pci_dev *pci; - struct snd_card *card; - - unsigned int num_devs; - unsigned int playback_devno, capture_devno; - struct viadev devs[VIA_MAX_MODEM_DEVS]; - - struct snd_pcm *pcms[2]; - - struct snd_ac97_bus *ac97_bus; - struct snd_ac97 *ac97; - unsigned int ac97_clock; - unsigned int ac97_secondary; /* secondary AC'97 codec is present */ - - spinlock_t reg_lock; - struct snd_info_entry *proc_entry; -}; - -static DEFINE_PCI_DEVICE_TABLE(snd_via82xx_modem_ids) = { - { PCI_VDEVICE(VIA, 0x3068), TYPE_CARD_VIA82XX_MODEM, }, - { 0, } -}; - -MODULE_DEVICE_TABLE(pci, snd_via82xx_modem_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) -{ - unsigned int i, idx, ofs, rest; - struct via82xx_modem *chip = snd_pcm_substream_chip(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; - unsigned int addr; - - if (idx >= VIA_TABLE_SIZE) { - snd_printk(KERN_ERR "via82xx: too much table size!\n"); - return -EINVAL; - } - addr = snd_pcm_sgbuf_get_addr(substream, ofs); - ((u32 *)dev->table.area)[idx << 1] = cpu_to_le32(addr); - 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(KERN_DEBUG "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; - return 0; -} - - -static int clean_via_table(struct viadev *dev, struct snd_pcm_substream *substream, - struct pci_dev *pci) -{ - if (dev->table.area) { - snd_dma_free_pages(&dev->table); - dev->table.area = NULL; - } - kfree(dev->idx_table); - dev->idx_table = NULL; - return 0; -} - -/* - * Basic I/O - */ - -static inline unsigned int snd_via82xx_codec_xread(struct via82xx_modem *chip) -{ - return inl(VIAREG(chip, AC97)); -} - -static inline void snd_via82xx_codec_xwrite(struct via82xx_modem *chip, unsigned int val) -{ - outl(val, VIAREG(chip, AC97)); -} - -static int snd_via82xx_codec_ready(struct via82xx_modem *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(struct via82xx_modem *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(struct snd_ac97 *ac97) -{ - struct via82xx_modem *chip = ac97->private_data; - int err; - err = snd_via82xx_codec_ready(chip, ac97->num); - /* here we need to wait fairly for long time.. */ - msleep(500); -} - -static void snd_via82xx_codec_write(struct snd_ac97 *ac97, - unsigned short reg, - unsigned short val) -{ - struct via82xx_modem *chip = ac97->private_data; - unsigned int xval; - if(reg == AC97_GPIO_STATUS) { - outl(val, VIAREG(chip, GPI_STATUS)); - return; - } - 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(struct snd_ac97 *ac97, unsigned short reg) -{ - struct via82xx_modem *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(struct via82xx_modem *chip, struct viadev *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 via82xx_modem *chip = dev_id; - unsigned int status; - unsigned int i; - - status = inl(VIAREG(chip, SGD_SHADOW)); - if (! (status & chip->intr_mask)) { - return IRQ_NONE; - } -// _skip_sgd: - - /* check status for each stream */ - spin_lock(&chip->reg_lock); - for (i = 0; i < chip->num_devs; i++) { - struct viadev *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(struct snd_pcm_substream *substream, int cmd) -{ - struct via82xx_modem *chip = snd_pcm_substream_chip(substream); - struct viadev *viadev = substream->runtime->private_data; - unsigned char val = 0; - - switch (cmd) { - case SNDRV_PCM_TRIGGER_START: - case SNDRV_PCM_TRIGGER_SUSPEND: - 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(struct viadev *viadev, unsigned int idx, - unsigned int count) -{ - unsigned int size, res; - - size = viadev->idx_table[idx].size; - res = viadev->idx_table[idx].offset + 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 (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 - if (count && size < count) { - snd_printd(KERN_ERR "invalid via82xx_cur_ptr, " - "using last valid pointer\n"); - res = viadev->lastpos; - } else { - if (! count) - /* bogus count 0 on the DMA boundary? */ - res = viadev->idx_table[idx].offset; - else - /* count register returns full size - * when end of buffer is reached - */ - res = viadev->idx_table[idx].offset + 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(struct snd_pcm_substream *substream) -{ - struct via82xx_modem *chip = snd_pcm_substream_chip(substream); - struct viadev *viadev = substream->runtime->private_data; - unsigned int idx, ptr, count, res; - - if (snd_BUG_ON(!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); -} - -/* - * 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) -{ - struct via82xx_modem *chip = snd_pcm_substream_chip(substream); - struct viadev *viadev = 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; - - snd_ac97_write(chip->ac97, AC97_LINE1_RATE, params_rate(hw_params)); - snd_ac97_write(chip->ac97, AC97_LINE1_LEVEL, 0); - - return 0; -} - -/* - * hw_free callback: - * clean up the buffer description table and release the buffer - */ -static int snd_via82xx_hw_free(struct snd_pcm_substream *substream) -{ - struct via82xx_modem *chip = snd_pcm_substream_chip(substream); - struct viadev *viadev = 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(struct via82xx_modem *chip, struct viadev *viadev) -{ - snd_via82xx_codec_ready(chip, chip->ac97_secondary); - outl((u32)viadev->table.addr, VIADEV_REG(viadev, OFFSET_TABLE_PTR)); - udelay(20); - snd_via82xx_codec_ready(chip, chip->ac97_secondary); -} - -/* - * prepare callback for playback and capture - */ -static int snd_via82xx_pcm_prepare(struct snd_pcm_substream *substream) -{ - struct via82xx_modem *chip = snd_pcm_substream_chip(substream); - struct viadev *viadev = substream->runtime->private_data; - - 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|VIA_REG_TYPE_INT_EOL|VIA_REG_TYPE_INT_FLAG, - VIADEV_REG(viadev, OFFSET_TYPE)); - return 0; -} - -/* - * pcm hardware definition, identical for both playback and capture - */ -static struct snd_pcm_hardware 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_8000 | SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_KNOT, - .rate_min = 8000, - .rate_max = 16000, - .channels_min = 1, - .channels_max = 1, - .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_modem_pcm_open(struct via82xx_modem *chip, struct viadev *viadev, - struct snd_pcm_substream *substream) -{ - struct snd_pcm_runtime *runtime = substream->runtime; - int err; - static unsigned int rates[] = { 8000, 9600, 12000, 16000 }; - static struct snd_pcm_hw_constraint_list hw_constraints_rates = { - .count = ARRAY_SIZE(rates), - .list = rates, - .mask = 0, - }; - - runtime->hw = snd_via82xx_hw; - - if ((err = snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_RATE, - &hw_constraints_rates)) < 0) - return err; - - /* we may remove following constaint when we modify table entries - in interrupt */ - if ((err = snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS)) < 0) - return err; - - runtime->private_data = viadev; - viadev->substream = substream; - - return 0; -} - - -/* - * open callback for playback - */ -static int snd_via82xx_playback_open(struct snd_pcm_substream *substream) -{ - struct via82xx_modem *chip = snd_pcm_substream_chip(substream); - struct viadev *viadev = &chip->devs[chip->playback_devno + substream->number]; - - return snd_via82xx_modem_pcm_open(chip, viadev, substream); -} - -/* - * open callback for capture - */ -static int snd_via82xx_capture_open(struct snd_pcm_substream *substream) -{ - struct via82xx_modem *chip = snd_pcm_substream_chip(substream); - struct viadev *viadev = &chip->devs[chip->capture_devno + substream->pcm->device]; - - return snd_via82xx_modem_pcm_open(chip, viadev, substream); -} - -/* - * close callback - */ -static int snd_via82xx_pcm_close(struct snd_pcm_substream *substream) -{ - struct viadev *viadev = substream->runtime->private_data; - - viadev->substream = NULL; - return 0; -} - - -/* via686 playback callbacks */ -static struct snd_pcm_ops snd_via686_playback_ops = { - .open = snd_via82xx_playback_open, - .close = snd_via82xx_pcm_close, - .ioctl = snd_pcm_lib_ioctl, - .hw_params = snd_via82xx_hw_params, - .hw_free = snd_via82xx_hw_free, - .prepare = snd_via82xx_pcm_prepare, - .trigger = snd_via82xx_pcm_trigger, - .pointer = snd_via686_pcm_pointer, - .page = snd_pcm_sgbuf_ops_page, -}; - -/* via686 capture callbacks */ -static struct snd_pcm_ops snd_via686_capture_ops = { - .open = snd_via82xx_capture_open, - .close = snd_via82xx_pcm_close, - .ioctl = snd_pcm_lib_ioctl, - .hw_params = snd_via82xx_hw_params, - .hw_free = snd_via82xx_hw_free, - .prepare = snd_via82xx_pcm_prepare, - .trigger = snd_via82xx_pcm_trigger, - .pointer = snd_via686_pcm_pointer, - .page = snd_pcm_sgbuf_ops_page, -}; - - -static void init_viadev(struct via82xx_modem *chip, int idx, unsigned int reg_offset, - int direction) -{ - chip->devs[idx].reg_offset = reg_offset; - chip->devs[idx].direction = direction; - chip->devs[idx].port = chip->port + reg_offset; -} - -/* - * create a pcm instance for via686a/b - */ -static int __devinit snd_via686_pcm_new(struct via82xx_modem *chip) -{ - struct snd_pcm *pcm; - int err; - - chip->playback_devno = 0; - chip->capture_devno = 1; - chip->num_devs = 2; - chip->intr_mask = 0x330000; /* FLAGS | EOL for MR, MW */ - - err = snd_pcm_new(chip->card, chip->card->shortname, 0, 1, 1, &pcm); - if (err < 0) - return err; - snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_via686_playback_ops); - snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_via686_capture_ops); - pcm->dev_class = SNDRV_PCM_CLASS_MODEM; - pcm->private_data = chip; - strcpy(pcm->name, chip->card->shortname); - chip->pcms[0] = pcm; - init_viadev(chip, 0, VIA_REG_MO_STATUS, 0); - init_viadev(chip, 1, VIA_REG_MI_STATUS, 1); - - if ((err = snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV_SG, - snd_dma_pci_data(chip->pci), - 64*1024, 128*1024)) < 0) - return err; - - return 0; -} - - -/* - * Mixer part - */ - - -static void snd_via82xx_mixer_free_ac97_bus(struct snd_ac97_bus *bus) -{ - struct via82xx_modem *chip = bus->private_data; - chip->ac97_bus = NULL; -} - -static void snd_via82xx_mixer_free_ac97(struct snd_ac97 *ac97) -{ - struct via82xx_modem *chip = ac97->private_data; - chip->ac97 = NULL; -} - - -static int __devinit snd_via82xx_mixer_new(struct via82xx_modem *chip) -{ - struct snd_ac97_template ac97; - int err; - static struct snd_ac97_bus_ops ops = { - .write = snd_via82xx_codec_write, - .read = snd_via82xx_codec_read, - .wait = snd_via82xx_codec_wait, - }; - - if ((err = snd_ac97_bus(chip->card, 0, &ops, chip, &chip->ac97_bus)) < 0) - return err; - chip->ac97_bus->private_free = snd_via82xx_mixer_free_ac97_bus; - chip->ac97_bus->clock = chip->ac97_clock; - - memset(&ac97, 0, sizeof(ac97)); - ac97.private_data = chip; - ac97.private_free = snd_via82xx_mixer_free_ac97; - ac97.pci = chip->pci; - ac97.scaps = AC97_SCAP_SKIP_AUDIO | AC97_SCAP_POWER_SAVE; - ac97.num = chip->ac97_secondary; - - if ((err = snd_ac97_mixer(chip->ac97_bus, &ac97, &chip->ac97)) < 0) - return err; - - return 0; -} - - -/* - * proc interface - */ -static void snd_via82xx_proc_read(struct snd_info_entry *entry, struct snd_info_buffer *buffer) -{ - struct via82xx_modem *chip = entry->private_data; - int i; - - snd_iprintf(buffer, "%s\n\n", chip->card->longname); - for (i = 0; i < 0xa0; i += 4) { - snd_iprintf(buffer, "%02x: %08x\n", i, inl(chip->port + i)); - } -} - -static void __devinit snd_via82xx_proc_init(struct via82xx_modem *chip) -{ - struct snd_info_entry *entry; - - if (! snd_card_proc_new(chip->card, "via82xx", &entry)) - snd_info_set_text_ops(entry, chip, snd_via82xx_proc_read); -} - -/* - * - */ - -static int snd_via82xx_chip_init(struct via82xx_modem *chip) -{ - unsigned int val; - unsigned long end_time; - unsigned char pval; - - pci_read_config_byte(chip->pci, VIA_MC97_CTRL, &pval); - if((pval & VIA_MC97_CTRL_INIT) != VIA_MC97_CTRL_INIT) { - pci_write_config_byte(chip->pci, 0x44, pval|VIA_MC97_CTRL_INIT); - udelay(100); - } - - pci_read_config_byte(chip->pci, VIA_ACLINK_STAT, &pval); - if (! (pval & VIA_ACLINK_C00_READY)) { /* codec not ready? */ - /* deassert ACLink reset, force SYNC */ - pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL, - VIA_ACLINK_CTRL_ENABLE | - VIA_ACLINK_CTRL_RESET | - VIA_ACLINK_CTRL_SYNC); - udelay(100); -#if 1 /* FIXME: should we do full reset here for all chip models? */ - pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL, 0x00); - udelay(100); -#else - /* deassert ACLink reset, force SYNC (warm AC'97 reset) */ - pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL, - VIA_ACLINK_CTRL_RESET|VIA_ACLINK_CTRL_SYNC); - udelay(2); -#endif - /* ACLink on, deassert ACLink reset, VSR, SGD data out */ - pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL, VIA_ACLINK_CTRL_INIT); - udelay(100); - } - - pci_read_config_byte(chip->pci, VIA_ACLINK_CTRL, &pval); - if ((pval & VIA_ACLINK_CTRL_INIT) != VIA_ACLINK_CTRL_INIT) { - /* ACLink on, deassert ACLink reset, VSR, SGD data out */ - pci_write_config_byte(chip->pci, VIA_ACLINK_CTRL, VIA_ACLINK_CTRL_INIT); - udelay(100); - } - - /* wait until codec ready */ - end_time = jiffies + msecs_to_jiffies(750); - do { - pci_read_config_byte(chip->pci, VIA_ACLINK_STAT, &pval); - if (pval & VIA_ACLINK_C00_READY) /* primary codec ready */ - break; - schedule_timeout_uninterruptible(1); - } while (time_before(jiffies, end_time)); - - if ((val = snd_via82xx_codec_xread(chip)) & VIA_REG_AC97_BUSY) - snd_printk(KERN_ERR "AC'97 codec is not ready [0x%x]\n", val); - - snd_via82xx_codec_xwrite(chip, VIA_REG_AC97_READ | - VIA_REG_AC97_SECONDARY_VALID | - (VIA_REG_AC97_CODEC_ID_SECONDARY << VIA_REG_AC97_CODEC_ID_SHIFT)); - end_time = jiffies + msecs_to_jiffies(750); - snd_via82xx_codec_xwrite(chip, VIA_REG_AC97_READ | - VIA_REG_AC97_SECONDARY_VALID | - (VIA_REG_AC97_CODEC_ID_SECONDARY << VIA_REG_AC97_CODEC_ID_SHIFT)); - do { - if ((val = snd_via82xx_codec_xread(chip)) & VIA_REG_AC97_SECONDARY_VALID) { - chip->ac97_secondary = 1; - goto __ac97_ok2; - } - schedule_timeout_uninterruptible(1); - } while (time_before(jiffies, end_time)); - /* This is ok, the most of motherboards have only one codec */ - - __ac97_ok2: - - /* route FM trap to IRQ, disable FM trap */ - // pci_write_config_byte(chip->pci, VIA_FM_NMI_CTRL, 0); - /* disable all GPI interrupts */ - outl(0, VIAREG(chip, GPI_INTR)); - - return 0; -} - -#ifdef CONFIG_PM -/* - * power management - */ -static int snd_via82xx_suspend(struct pci_dev *pci, pm_message_t state) -{ - struct snd_card *card = pci_get_drvdata(pci); - struct via82xx_modem *chip = card->private_data; - int i; - - snd_power_change_state(card, SNDRV_CTL_POWER_D3hot); - for (i = 0; i < 2; i++) - snd_pcm_suspend_all(chip->pcms[i]); - for (i = 0; i < chip->num_devs; i++) - snd_via82xx_channel_reset(chip, &chip->devs[i]); - synchronize_irq(chip->irq); - snd_ac97_suspend(chip->ac97); - - pci_disable_device(pci); - pci_save_state(pci); - pci_set_power_state(pci, pci_choose_state(pci, state)); - return 0; -} - -static int snd_via82xx_resume(struct pci_dev *pci) -{ - struct snd_card *card = pci_get_drvdata(pci); - struct via82xx_modem *chip = card->private_data; - int i; - - pci_set_power_state(pci, PCI_D0); - pci_restore_state(pci); - if (pci_enable_device(pci) < 0) { - printk(KERN_ERR "via82xx-modem: pci_enable_device failed, " - "disabling device\n"); - snd_card_disconnect(card); - return -EIO; - } - pci_set_master(pci); - - snd_via82xx_chip_init(chip); - - snd_ac97_resume(chip->ac97); - - for (i = 0; i < chip->num_devs; i++) - snd_via82xx_channel_reset(chip, &chip->devs[i]); - - snd_power_change_state(card, SNDRV_CTL_POWER_D0); - return 0; -} -#endif /* CONFIG_PM */ - -static int snd_via82xx_free(struct via82xx_modem *chip) -{ - unsigned int i; - - if (chip->irq < 0) - goto __end_hw; - /* disable interrupts */ - for (i = 0; i < chip->num_devs; i++) - snd_via82xx_channel_reset(chip, &chip->devs[i]); - - __end_hw: - if (chip->irq >= 0) - free_irq(chip->irq, chip); - pci_release_regions(chip->pci); - pci_disable_device(chip->pci); - kfree(chip); - return 0; -} - -static int snd_via82xx_dev_free(struct snd_device *device) -{ - struct via82xx_modem *chip = device->device_data; - return snd_via82xx_free(chip); -} - -static int __devinit snd_via82xx_create(struct snd_card *card, - struct pci_dev *pci, - int chip_type, - int revision, - unsigned int ac97_clock, - struct via82xx_modem ** r_via) -{ - struct via82xx_modem *chip; - int err; - static struct snd_device_ops ops = { - .dev_free = snd_via82xx_dev_free, - }; - - if ((err = pci_enable_device(pci)) < 0) - return err; - - if ((chip = kzalloc(sizeof(*chip), GFP_KERNEL)) == NULL) { - pci_disable_device(pci); - return -ENOMEM; - } - - spin_lock_init(&chip->reg_lock); - chip->card = card; - chip->pci = pci; - chip->irq = -1; - - if ((err = pci_request_regions(pci, card->driver)) < 0) { - kfree(chip); - pci_disable_device(pci); - return err; - } - chip->port = pci_resource_start(pci, 0); - if (request_irq(pci->irq, snd_via82xx_interrupt, IRQF_SHARED, - KBUILD_MODNAME, chip)) { - snd_printk(KERN_ERR "unable to grab IRQ %d\n", pci->irq); - snd_via82xx_free(chip); - return -EBUSY; - } - chip->irq = pci->irq; - if (ac97_clock >= 8000 && ac97_clock <= 48000) - chip->ac97_clock = ac97_clock; - synchronize_irq(chip->irq); - - if ((err = snd_via82xx_chip_init(chip)) < 0) { - snd_via82xx_free(chip); - return err; - } - - if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops)) < 0) { - snd_via82xx_free(chip); - return err; - } - - /* The 8233 ac97 controller does not implement the master bit - * in the pci command register. IMHO this is a violation of the PCI spec. - * We call pci_set_master here because it does not hurt. */ - pci_set_master(pci); - - snd_card_set_dev(card, &pci->dev); - - *r_via = chip; - return 0; -} - - -static int __devinit snd_via82xx_probe(struct pci_dev *pci, - const struct pci_device_id *pci_id) -{ - struct snd_card *card; - struct via82xx_modem *chip; - int chip_type = 0, card_type; - unsigned int i; - int err; - - err = snd_card_create(index, id, THIS_MODULE, 0, &card); - if (err < 0) - return err; - - card_type = pci_id->driver_data; - switch (card_type) { - case TYPE_CARD_VIA82XX_MODEM: - strcpy(card->driver, "VIA82XX-MODEM"); - sprintf(card->shortname, "VIA 82XX modem"); - break; - default: - snd_printk(KERN_ERR "invalid card type %d\n", card_type); - err = -EINVAL; - goto __error; - } - - if ((err = snd_via82xx_create(card, pci, chip_type, pci->revision, - ac97_clock, &chip)) < 0) - goto __error; - card->private_data = chip; - if ((err = snd_via82xx_mixer_new(chip)) < 0) - goto __error; - - if ((err = snd_via686_pcm_new(chip)) < 0 ) - goto __error; - - /* disable interrupts */ - for (i = 0; i < chip->num_devs; i++) - snd_via82xx_channel_reset(chip, &chip->devs[i]); - - sprintf(card->longname, "%s at 0x%lx, irq %d", - card->shortname, chip->port, chip->irq); - - snd_via82xx_proc_init(chip); - - if ((err = snd_card_register(card)) < 0) { - snd_card_free(card); - return err; - } - pci_set_drvdata(pci, card); - return 0; - - __error: - snd_card_free(card); - return err; -} - -static void __devexit snd_via82xx_remove(struct pci_dev *pci) -{ - snd_card_free(pci_get_drvdata(pci)); - pci_set_drvdata(pci, NULL); -} - -static struct pci_driver driver = { - .name = KBUILD_MODNAME, - .id_table = snd_via82xx_modem_ids, - .probe = snd_via82xx_probe, - .remove = __devexit_p(snd_via82xx_remove), -#ifdef CONFIG_PM - .suspend = snd_via82xx_suspend, - .resume = snd_via82xx_resume, -#endif -}; - -static int __init alsa_card_via82xx_init(void) -{ - return pci_register_driver(&driver); -} - -static void __exit alsa_card_via82xx_exit(void) -{ - pci_unregister_driver(&driver); -} - -module_init(alsa_card_via82xx_init) -module_exit(alsa_card_via82xx_exit) |