--- /dev/null
+/*
+ * 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 <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/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 const struct pci_device_id 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) {
+ dev_err(&pci->dev, "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 */
+ /*
+ dev_dbg(&pci->dev,
+ "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;
+ }
+ dev_err(chip->card->dev, "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) {
+ dev_err(chip->card->dev,
+ "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 via82xx_modem *chip,
+ 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) {
+ dev_err(chip->card->dev,
+ "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
+ dev_dbg(chip->card->dev,
+ "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) {
+ dev_dbg(chip->card->dev,
+ "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)) {
+ dev_dbg(chip->card->dev,
+ "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(chip, 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 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 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 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)
+ dev_err(chip->card->dev,
+ "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_SLEEP
+/*
+ * power management
+ */
+static int snd_via82xx_suspend(struct device *dev)
+{
+ struct snd_card *card = dev_get_drvdata(dev);
+ 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);
+ return 0;
+}
+
+static int snd_via82xx_resume(struct device *dev)
+{
+ struct snd_card *card = dev_get_drvdata(dev);
+ struct via82xx_modem *chip = card->private_data;
+ int i;
+
+ 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;
+}
+
+static SIMPLE_DEV_PM_OPS(snd_via82xx_pm, snd_via82xx_suspend, snd_via82xx_resume);
+#define SND_VIA82XX_PM_OPS &snd_via82xx_pm
+#else
+#define SND_VIA82XX_PM_OPS NULL
+#endif /* CONFIG_PM_SLEEP */
+
+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 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)) {
+ dev_err(card->dev, "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);
+
+ *r_via = chip;
+ return 0;
+}
+
+
+static int 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_new(&pci->dev, 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:
+ dev_err(card->dev, "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 snd_via82xx_remove(struct pci_dev *pci)
+{
+ snd_card_free(pci_get_drvdata(pci));
+}
+
+static struct pci_driver via82xx_modem_driver = {
+ .name = KBUILD_MODNAME,
+ .id_table = snd_via82xx_modem_ids,
+ .probe = snd_via82xx_probe,
+ .remove = snd_via82xx_remove,
+ .driver = {
+ .pm = SND_VIA82XX_PM_OPS,
+ },
+};
+
+module_pci_driver(via82xx_modem_driver);
Code Review / kvmfornfv.git / blobdiff