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1219 lines
33 KiB
1219 lines
33 KiB
// SPDX-License-Identifier: GPL-2.0-or-later |
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/* |
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* ALSA modem driver for VIA VT82xx (South Bridge) |
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* |
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* VT82C686A/B/C, VT8233A/C, VT8235 |
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* |
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* Copyright (c) 2000 Jaroslav Kysela <[email protected]> |
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* Tjeerd.Mulder <[email protected]> |
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* 2002 Takashi Iwai <[email protected]> |
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*/ |
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|
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/* |
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* Changes: |
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* |
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* Sep. 2, 2004 Sasha Khapyorsky <[email protected]> |
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* Modified from original audio driver 'via82xx.c' to support AC97 |
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* modems. |
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*/ |
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|
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#include <linux/io.h> |
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#include <linux/delay.h> |
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#include <linux/interrupt.h> |
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#include <linux/init.h> |
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#include <linux/pci.h> |
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#include <linux/slab.h> |
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#include <linux/module.h> |
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#include <sound/core.h> |
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#include <sound/pcm.h> |
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#include <sound/pcm_params.h> |
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#include <sound/info.h> |
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#include <sound/ac97_codec.h> |
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#include <sound/initval.h> |
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|
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#if 0 |
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#define POINTER_DEBUG |
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#endif |
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MODULE_AUTHOR("Jaroslav Kysela <[email protected]>"); |
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MODULE_DESCRIPTION("VIA VT82xx modem"); |
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MODULE_LICENSE("GPL"); |
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static int index = -2; /* Exclude the first card */ |
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static char *id = SNDRV_DEFAULT_STR1; /* ID for this card */ |
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static int ac97_clock = 48000; |
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module_param(index, int, 0444); |
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MODULE_PARM_DESC(index, "Index value for VIA 82xx bridge."); |
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module_param(id, charp, 0444); |
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MODULE_PARM_DESC(id, "ID string for VIA 82xx bridge."); |
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module_param(ac97_clock, int, 0444); |
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MODULE_PARM_DESC(ac97_clock, "AC'97 codec clock (default 48000Hz)."); |
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|
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/* just for backward compatibility */ |
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static bool enable; |
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module_param(enable, bool, 0444); |
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/* |
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* Direct registers |
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*/ |
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|
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#define VIAREG(via, x) ((via)->port + VIA_REG_##x) |
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#define VIADEV_REG(viadev, x) ((viadev)->port + VIA_REG_##x) |
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|
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/* common offsets */ |
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#define VIA_REG_OFFSET_STATUS 0x00 /* byte - channel status */ |
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#define VIA_REG_STAT_ACTIVE 0x80 /* RO */ |
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#define VIA_REG_STAT_PAUSED 0x40 /* RO */ |
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#define VIA_REG_STAT_TRIGGER_QUEUED 0x08 /* RO */ |
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#define VIA_REG_STAT_STOPPED 0x04 /* RWC */ |
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#define VIA_REG_STAT_EOL 0x02 /* RWC */ |
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#define VIA_REG_STAT_FLAG 0x01 /* RWC */ |
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#define VIA_REG_OFFSET_CONTROL 0x01 /* byte - channel control */ |
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#define VIA_REG_CTRL_START 0x80 /* WO */ |
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#define VIA_REG_CTRL_TERMINATE 0x40 /* WO */ |
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#define VIA_REG_CTRL_AUTOSTART 0x20 |
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#define VIA_REG_CTRL_PAUSE 0x08 /* RW */ |
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#define VIA_REG_CTRL_INT_STOP 0x04 |
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#define VIA_REG_CTRL_INT_EOL 0x02 |
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#define VIA_REG_CTRL_INT_FLAG 0x01 |
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#define VIA_REG_CTRL_RESET 0x01 /* RW - probably reset? undocumented */ |
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#define VIA_REG_CTRL_INT (VIA_REG_CTRL_INT_FLAG | VIA_REG_CTRL_INT_EOL | VIA_REG_CTRL_AUTOSTART) |
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#define VIA_REG_OFFSET_TYPE 0x02 /* byte - channel type (686 only) */ |
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#define VIA_REG_TYPE_AUTOSTART 0x80 /* RW - autostart at EOL */ |
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#define VIA_REG_TYPE_16BIT 0x20 /* RW */ |
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#define VIA_REG_TYPE_STEREO 0x10 /* RW */ |
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#define VIA_REG_TYPE_INT_LLINE 0x00 |
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#define VIA_REG_TYPE_INT_LSAMPLE 0x04 |
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#define VIA_REG_TYPE_INT_LESSONE 0x08 |
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#define VIA_REG_TYPE_INT_MASK 0x0c |
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#define VIA_REG_TYPE_INT_EOL 0x02 |
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#define VIA_REG_TYPE_INT_FLAG 0x01 |
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#define VIA_REG_OFFSET_TABLE_PTR 0x04 /* dword - channel table pointer */ |
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#define VIA_REG_OFFSET_CURR_PTR 0x04 /* dword - channel current pointer */ |
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#define VIA_REG_OFFSET_STOP_IDX 0x08 /* dword - stop index, channel type, sample rate */ |
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#define VIA_REG_OFFSET_CURR_COUNT 0x0c /* dword - channel current count (24 bit) */ |
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#define VIA_REG_OFFSET_CURR_INDEX 0x0f /* byte - channel current index (for via8233 only) */ |
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|
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#define DEFINE_VIA_REGSET(name,val) \ |
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enum {\ |
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VIA_REG_##name##_STATUS = (val),\ |
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VIA_REG_##name##_CONTROL = (val) + 0x01,\ |
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VIA_REG_##name##_TYPE = (val) + 0x02,\ |
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VIA_REG_##name##_TABLE_PTR = (val) + 0x04,\ |
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VIA_REG_##name##_CURR_PTR = (val) + 0x04,\ |
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VIA_REG_##name##_STOP_IDX = (val) + 0x08,\ |
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VIA_REG_##name##_CURR_COUNT = (val) + 0x0c,\ |
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} |
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|
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/* modem block */ |
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DEFINE_VIA_REGSET(MO, 0x40); |
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DEFINE_VIA_REGSET(MI, 0x50); |
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|
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/* AC'97 */ |
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#define VIA_REG_AC97 0x80 /* dword */ |
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#define VIA_REG_AC97_CODEC_ID_MASK (3<<30) |
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#define VIA_REG_AC97_CODEC_ID_SHIFT 30 |
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#define VIA_REG_AC97_CODEC_ID_PRIMARY 0x00 |
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#define VIA_REG_AC97_CODEC_ID_SECONDARY 0x01 |
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#define VIA_REG_AC97_SECONDARY_VALID (1<<27) |
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#define VIA_REG_AC97_PRIMARY_VALID (1<<25) |
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#define VIA_REG_AC97_BUSY (1<<24) |
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#define VIA_REG_AC97_READ (1<<23) |
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#define VIA_REG_AC97_CMD_SHIFT 16 |
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#define VIA_REG_AC97_CMD_MASK 0x7e |
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#define VIA_REG_AC97_DATA_SHIFT 0 |
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#define VIA_REG_AC97_DATA_MASK 0xffff |
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|
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#define VIA_REG_SGD_SHADOW 0x84 /* dword */ |
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#define VIA_REG_SGD_STAT_PB_FLAG (1<<0) |
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#define VIA_REG_SGD_STAT_CP_FLAG (1<<1) |
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#define VIA_REG_SGD_STAT_FM_FLAG (1<<2) |
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#define VIA_REG_SGD_STAT_PB_EOL (1<<4) |
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#define VIA_REG_SGD_STAT_CP_EOL (1<<5) |
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#define VIA_REG_SGD_STAT_FM_EOL (1<<6) |
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#define VIA_REG_SGD_STAT_PB_STOP (1<<8) |
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#define VIA_REG_SGD_STAT_CP_STOP (1<<9) |
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#define VIA_REG_SGD_STAT_FM_STOP (1<<10) |
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#define VIA_REG_SGD_STAT_PB_ACTIVE (1<<12) |
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#define VIA_REG_SGD_STAT_CP_ACTIVE (1<<13) |
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#define VIA_REG_SGD_STAT_FM_ACTIVE (1<<14) |
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#define VIA_REG_SGD_STAT_MR_FLAG (1<<16) |
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#define VIA_REG_SGD_STAT_MW_FLAG (1<<17) |
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#define VIA_REG_SGD_STAT_MR_EOL (1<<20) |
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#define VIA_REG_SGD_STAT_MW_EOL (1<<21) |
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#define VIA_REG_SGD_STAT_MR_STOP (1<<24) |
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#define VIA_REG_SGD_STAT_MW_STOP (1<<25) |
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#define VIA_REG_SGD_STAT_MR_ACTIVE (1<<28) |
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#define VIA_REG_SGD_STAT_MW_ACTIVE (1<<29) |
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|
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#define VIA_REG_GPI_STATUS 0x88 |
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#define VIA_REG_GPI_INTR 0x8c |
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|
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#define VIA_TBL_BIT_FLAG 0x40000000 |
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#define VIA_TBL_BIT_EOL 0x80000000 |
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|
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/* pci space */ |
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#define VIA_ACLINK_STAT 0x40 |
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#define VIA_ACLINK_C11_READY 0x20 |
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#define VIA_ACLINK_C10_READY 0x10 |
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#define VIA_ACLINK_C01_READY 0x04 /* secondary codec ready */ |
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#define VIA_ACLINK_LOWPOWER 0x02 /* low-power state */ |
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#define VIA_ACLINK_C00_READY 0x01 /* primary codec ready */ |
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#define VIA_ACLINK_CTRL 0x41 |
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#define VIA_ACLINK_CTRL_ENABLE 0x80 /* 0: disable, 1: enable */ |
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#define VIA_ACLINK_CTRL_RESET 0x40 /* 0: assert, 1: de-assert */ |
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#define VIA_ACLINK_CTRL_SYNC 0x20 /* 0: release SYNC, 1: force SYNC hi */ |
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#define VIA_ACLINK_CTRL_SDO 0x10 /* 0: release SDO, 1: force SDO hi */ |
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#define VIA_ACLINK_CTRL_VRA 0x08 /* 0: disable VRA, 1: enable VRA */ |
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#define VIA_ACLINK_CTRL_PCM 0x04 /* 0: disable PCM, 1: enable PCM */ |
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#define VIA_ACLINK_CTRL_FM 0x02 /* via686 only */ |
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#define VIA_ACLINK_CTRL_SB 0x01 /* via686 only */ |
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#define VIA_ACLINK_CTRL_INIT (VIA_ACLINK_CTRL_ENABLE|\ |
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VIA_ACLINK_CTRL_RESET|\ |
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VIA_ACLINK_CTRL_PCM) |
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#define VIA_FUNC_ENABLE 0x42 |
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#define VIA_FUNC_MIDI_PNP 0x80 /* FIXME: it's 0x40 in the datasheet! */ |
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#define VIA_FUNC_MIDI_IRQMASK 0x40 /* FIXME: not documented! */ |
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#define VIA_FUNC_RX2C_WRITE 0x20 |
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#define VIA_FUNC_SB_FIFO_EMPTY 0x10 |
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#define VIA_FUNC_ENABLE_GAME 0x08 |
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#define VIA_FUNC_ENABLE_FM 0x04 |
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#define VIA_FUNC_ENABLE_MIDI 0x02 |
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#define VIA_FUNC_ENABLE_SB 0x01 |
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#define VIA_PNP_CONTROL 0x43 |
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#define VIA_MC97_CTRL 0x44 |
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#define VIA_MC97_CTRL_ENABLE 0x80 |
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#define VIA_MC97_CTRL_SECONDARY 0x40 |
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#define VIA_MC97_CTRL_INIT (VIA_MC97_CTRL_ENABLE|\ |
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VIA_MC97_CTRL_SECONDARY) |
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/* |
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* pcm stream |
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*/ |
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struct snd_via_sg_table { |
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unsigned int offset; |
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unsigned int size; |
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} ; |
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#define VIA_TABLE_SIZE 255 |
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struct viadev { |
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unsigned int reg_offset; |
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unsigned long port; |
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int direction; /* playback = 0, capture = 1 */ |
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struct snd_pcm_substream *substream; |
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int running; |
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unsigned int tbl_entries; /* # descriptors */ |
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struct snd_dma_buffer table; |
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struct snd_via_sg_table *idx_table; |
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/* for recovery from the unexpected pointer */ |
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unsigned int lastpos; |
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unsigned int bufsize; |
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unsigned int bufsize2; |
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}; |
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enum { TYPE_CARD_VIA82XX_MODEM = 1 }; |
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#define VIA_MAX_MODEM_DEVS 2 |
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struct via82xx_modem { |
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int irq; |
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unsigned long port; |
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unsigned int intr_mask; /* SGD_SHADOW mask to check interrupts */ |
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struct pci_dev *pci; |
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struct snd_card *card; |
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unsigned int num_devs; |
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unsigned int playback_devno, capture_devno; |
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struct viadev devs[VIA_MAX_MODEM_DEVS]; |
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struct snd_pcm *pcms[2]; |
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struct snd_ac97_bus *ac97_bus; |
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struct snd_ac97 *ac97; |
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unsigned int ac97_clock; |
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unsigned int ac97_secondary; /* secondary AC'97 codec is present */ |
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spinlock_t reg_lock; |
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struct snd_info_entry *proc_entry; |
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}; |
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static const struct pci_device_id snd_via82xx_modem_ids[] = { |
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{ PCI_VDEVICE(VIA, 0x3068), TYPE_CARD_VIA82XX_MODEM, }, |
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{ 0, } |
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}; |
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MODULE_DEVICE_TABLE(pci, snd_via82xx_modem_ids); |
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/* |
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*/ |
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/* |
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* allocate and initialize the descriptor buffers |
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* periods = number of periods |
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* fragsize = period size in bytes |
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*/ |
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static int build_via_table(struct viadev *dev, struct snd_pcm_substream *substream, |
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struct pci_dev *pci, |
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unsigned int periods, unsigned int fragsize) |
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{ |
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unsigned int i, idx, ofs, rest; |
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struct via82xx_modem *chip = snd_pcm_substream_chip(substream); |
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__le32 *pgtbl; |
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if (dev->table.area == NULL) { |
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/* the start of each lists must be aligned to 8 bytes, |
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* but the kernel pages are much bigger, so we don't care |
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*/ |
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if (snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, &chip->pci->dev, |
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PAGE_ALIGN(VIA_TABLE_SIZE * 2 * 8), |
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&dev->table) < 0) |
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return -ENOMEM; |
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} |
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if (! dev->idx_table) { |
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dev->idx_table = kmalloc_array(VIA_TABLE_SIZE, |
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sizeof(*dev->idx_table), |
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GFP_KERNEL); |
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if (! dev->idx_table) |
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return -ENOMEM; |
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} |
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/* fill the entries */ |
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idx = 0; |
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ofs = 0; |
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pgtbl = (__le32 *)dev->table.area; |
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for (i = 0; i < periods; i++) { |
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rest = fragsize; |
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/* fill descriptors for a period. |
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* a period can be split to several descriptors if it's |
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* over page boundary. |
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*/ |
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do { |
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unsigned int r; |
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unsigned int flag; |
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unsigned int addr; |
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if (idx >= VIA_TABLE_SIZE) { |
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dev_err(&pci->dev, "too much table size!\n"); |
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return -EINVAL; |
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} |
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addr = snd_pcm_sgbuf_get_addr(substream, ofs); |
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pgtbl[idx << 1] = cpu_to_le32(addr); |
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r = PAGE_SIZE - (ofs % PAGE_SIZE); |
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if (rest < r) |
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r = rest; |
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rest -= r; |
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if (! rest) { |
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if (i == periods - 1) |
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flag = VIA_TBL_BIT_EOL; /* buffer boundary */ |
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else |
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flag = VIA_TBL_BIT_FLAG; /* period boundary */ |
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} else |
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flag = 0; /* period continues to the next */ |
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/* |
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dev_dbg(&pci->dev, |
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"tbl %d: at %d size %d (rest %d)\n", |
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idx, ofs, r, rest); |
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*/ |
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pgtbl[(idx<<1) + 1] = cpu_to_le32(r | flag); |
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dev->idx_table[idx].offset = ofs; |
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dev->idx_table[idx].size = r; |
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ofs += r; |
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idx++; |
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} while (rest > 0); |
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} |
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dev->tbl_entries = idx; |
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dev->bufsize = periods * fragsize; |
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dev->bufsize2 = dev->bufsize / 2; |
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return 0; |
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} |
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static int clean_via_table(struct viadev *dev, struct snd_pcm_substream *substream, |
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struct pci_dev *pci) |
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{ |
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if (dev->table.area) { |
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snd_dma_free_pages(&dev->table); |
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dev->table.area = NULL; |
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} |
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kfree(dev->idx_table); |
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dev->idx_table = NULL; |
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return 0; |
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} |
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/* |
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* Basic I/O |
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*/ |
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static inline unsigned int snd_via82xx_codec_xread(struct via82xx_modem *chip) |
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{ |
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return inl(VIAREG(chip, AC97)); |
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} |
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static inline void snd_via82xx_codec_xwrite(struct via82xx_modem *chip, unsigned int val) |
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{ |
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outl(val, VIAREG(chip, AC97)); |
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} |
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static int snd_via82xx_codec_ready(struct via82xx_modem *chip, int secondary) |
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{ |
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unsigned int timeout = 1000; /* 1ms */ |
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unsigned int val; |
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while (timeout-- > 0) { |
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udelay(1); |
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val = snd_via82xx_codec_xread(chip); |
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if (!(val & VIA_REG_AC97_BUSY)) |
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return val & 0xffff; |
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} |
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dev_err(chip->card->dev, "codec_ready: codec %i is not ready [0x%x]\n", |
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secondary, snd_via82xx_codec_xread(chip)); |
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return -EIO; |
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} |
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static int snd_via82xx_codec_valid(struct via82xx_modem *chip, int secondary) |
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{ |
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unsigned int timeout = 1000; /* 1ms */ |
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unsigned int val, val1; |
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unsigned int stat = !secondary ? VIA_REG_AC97_PRIMARY_VALID : |
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VIA_REG_AC97_SECONDARY_VALID; |
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|
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while (timeout-- > 0) { |
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val = snd_via82xx_codec_xread(chip); |
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val1 = val & (VIA_REG_AC97_BUSY | stat); |
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if (val1 == stat) |
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return val & 0xffff; |
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udelay(1); |
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} |
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return -EIO; |
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} |
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static void snd_via82xx_codec_wait(struct snd_ac97 *ac97) |
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{ |
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struct via82xx_modem *chip = ac97->private_data; |
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__always_unused int err; |
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err = snd_via82xx_codec_ready(chip, ac97->num); |
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/* here we need to wait fairly for long time.. */ |
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msleep(500); |
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} |
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|
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static void snd_via82xx_codec_write(struct snd_ac97 *ac97, |
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unsigned short reg, |
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unsigned short val) |
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{ |
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struct via82xx_modem *chip = ac97->private_data; |
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unsigned int xval; |
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if(reg == AC97_GPIO_STATUS) { |
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outl(val, VIAREG(chip, GPI_STATUS)); |
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return; |
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} |
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xval = !ac97->num ? VIA_REG_AC97_CODEC_ID_PRIMARY : VIA_REG_AC97_CODEC_ID_SECONDARY; |
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xval <<= VIA_REG_AC97_CODEC_ID_SHIFT; |
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xval |= reg << VIA_REG_AC97_CMD_SHIFT; |
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xval |= val << VIA_REG_AC97_DATA_SHIFT; |
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snd_via82xx_codec_xwrite(chip, xval); |
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snd_via82xx_codec_ready(chip, ac97->num); |
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} |
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|
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static unsigned short snd_via82xx_codec_read(struct snd_ac97 *ac97, unsigned short reg) |
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{ |
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struct via82xx_modem *chip = ac97->private_data; |
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unsigned int xval, val = 0xffff; |
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int again = 0; |
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|
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xval = ac97->num << VIA_REG_AC97_CODEC_ID_SHIFT; |
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xval |= ac97->num ? VIA_REG_AC97_SECONDARY_VALID : VIA_REG_AC97_PRIMARY_VALID; |
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xval |= VIA_REG_AC97_READ; |
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xval |= (reg & 0x7f) << VIA_REG_AC97_CMD_SHIFT; |
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while (1) { |
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if (again++ > 3) { |
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dev_err(chip->card->dev, |
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"codec_read: codec %i is not valid [0x%x]\n", |
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ac97->num, snd_via82xx_codec_xread(chip)); |
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return 0xffff; |
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} |
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snd_via82xx_codec_xwrite(chip, xval); |
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udelay (20); |
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if (snd_via82xx_codec_valid(chip, ac97->num) >= 0) { |
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udelay(25); |
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val = snd_via82xx_codec_xread(chip); |
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break; |
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} |
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} |
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return val & 0xffff; |
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} |
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|
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static void snd_via82xx_channel_reset(struct via82xx_modem *chip, struct viadev *viadev) |
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{ |
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outb(VIA_REG_CTRL_PAUSE | VIA_REG_CTRL_TERMINATE | VIA_REG_CTRL_RESET, |
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VIADEV_REG(viadev, OFFSET_CONTROL)); |
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inb(VIADEV_REG(viadev, OFFSET_CONTROL)); |
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udelay(50); |
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/* disable interrupts */ |
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outb(0x00, VIADEV_REG(viadev, OFFSET_CONTROL)); |
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/* clear interrupts */ |
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outb(0x03, VIADEV_REG(viadev, OFFSET_STATUS)); |
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outb(0x00, VIADEV_REG(viadev, OFFSET_TYPE)); /* for via686 */ |
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// outl(0, VIADEV_REG(viadev, OFFSET_CURR_PTR)); |
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viadev->lastpos = 0; |
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} |
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|
|
|
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/* |
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* Interrupt handler |
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*/ |
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|
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static irqreturn_t snd_via82xx_interrupt(int irq, void *dev_id) |
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{ |
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struct via82xx_modem *chip = dev_id; |
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unsigned int status; |
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unsigned int i; |
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|
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status = inl(VIAREG(chip, SGD_SHADOW)); |
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if (! (status & chip->intr_mask)) { |
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return IRQ_NONE; |
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} |
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// _skip_sgd: |
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|
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/* check status for each stream */ |
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spin_lock(&chip->reg_lock); |
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for (i = 0; i < chip->num_devs; i++) { |
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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 = 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); |
|
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 const 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 const unsigned int rates[] = { 8000, 9600, 12000, 16000 }; |
|
static const struct snd_pcm_hw_constraint_list hw_constraints_rates = { |
|
.count = ARRAY_SIZE(rates), |
|
.list = rates, |
|
.mask = 0, |
|
}; |
|
|
|
runtime->hw = snd_via82xx_hw; |
|
|
|
err = snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_RATE, |
|
&hw_constraints_rates); |
|
if (err < 0) |
|
return err; |
|
|
|
/* we may remove following constaint when we modify table entries |
|
in interrupt */ |
|
err = snd_pcm_hw_constraint_integer(runtime, SNDRV_PCM_HW_PARAM_PERIODS); |
|
if (err < 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 const struct snd_pcm_ops snd_via686_playback_ops = { |
|
.open = snd_via82xx_playback_open, |
|
.close = snd_via82xx_pcm_close, |
|
.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, |
|
}; |
|
|
|
/* via686 capture callbacks */ |
|
static const struct snd_pcm_ops snd_via686_capture_ops = { |
|
.open = snd_via82xx_capture_open, |
|
.close = snd_via82xx_pcm_close, |
|
.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, |
|
}; |
|
|
|
|
|
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); |
|
|
|
snd_pcm_set_managed_buffer_all(pcm, SNDRV_DMA_TYPE_DEV_SG, |
|
&chip->pci->dev, 64*1024, 128*1024); |
|
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 const struct snd_ac97_bus_ops ops = { |
|
.write = snd_via82xx_codec_write, |
|
.read = snd_via82xx_codec_read, |
|
.wait = snd_via82xx_codec_wait, |
|
}; |
|
|
|
err = snd_ac97_bus(chip->card, 0, &ops, chip, &chip->ac97_bus); |
|
if (err < 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; |
|
|
|
err = snd_ac97_mixer(chip->ac97_bus, &ac97, &chip->ac97); |
|
if (err < 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) |
|
{ |
|
snd_card_ro_proc_new(chip->card, "via82xx", 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)); |
|
|
|
val = snd_via82xx_codec_xread(chip); |
|
if (val & 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 { |
|
val = snd_via82xx_codec_xread(chip); |
|
if (val & 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 |
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*/ |
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static int snd_via82xx_suspend(struct device *dev) |
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{ |
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struct snd_card *card = dev_get_drvdata(dev); |
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struct via82xx_modem *chip = card->private_data; |
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int i; |
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|
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snd_power_change_state(card, SNDRV_CTL_POWER_D3hot); |
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for (i = 0; i < chip->num_devs; i++) |
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snd_via82xx_channel_reset(chip, &chip->devs[i]); |
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snd_ac97_suspend(chip->ac97); |
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return 0; |
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} |
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|
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static int snd_via82xx_resume(struct device *dev) |
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{ |
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struct snd_card *card = dev_get_drvdata(dev); |
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struct via82xx_modem *chip = card->private_data; |
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int i; |
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|
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snd_via82xx_chip_init(chip); |
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|
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snd_ac97_resume(chip->ac97); |
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|
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for (i = 0; i < chip->num_devs; i++) |
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snd_via82xx_channel_reset(chip, &chip->devs[i]); |
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|
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snd_power_change_state(card, SNDRV_CTL_POWER_D0); |
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return 0; |
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} |
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|
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static SIMPLE_DEV_PM_OPS(snd_via82xx_pm, snd_via82xx_suspend, snd_via82xx_resume); |
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#define SND_VIA82XX_PM_OPS &snd_via82xx_pm |
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#else |
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#define SND_VIA82XX_PM_OPS NULL |
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#endif /* CONFIG_PM_SLEEP */ |
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|
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static int snd_via82xx_free(struct via82xx_modem *chip) |
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{ |
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unsigned int i; |
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|
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if (chip->irq < 0) |
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goto __end_hw; |
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/* disable interrupts */ |
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for (i = 0; i < chip->num_devs; i++) |
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snd_via82xx_channel_reset(chip, &chip->devs[i]); |
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|
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__end_hw: |
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if (chip->irq >= 0) |
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free_irq(chip->irq, chip); |
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pci_release_regions(chip->pci); |
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pci_disable_device(chip->pci); |
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kfree(chip); |
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return 0; |
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} |
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|
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static int snd_via82xx_dev_free(struct snd_device *device) |
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{ |
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struct via82xx_modem *chip = device->device_data; |
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return snd_via82xx_free(chip); |
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} |
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|
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static int snd_via82xx_create(struct snd_card *card, |
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struct pci_dev *pci, |
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int chip_type, |
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int revision, |
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unsigned int ac97_clock, |
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struct via82xx_modem **r_via) |
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{ |
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struct via82xx_modem *chip; |
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int err; |
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static const struct snd_device_ops ops = { |
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.dev_free = snd_via82xx_dev_free, |
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}; |
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|
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err = pci_enable_device(pci); |
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if (err < 0) |
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return err; |
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|
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chip = kzalloc(sizeof(*chip), GFP_KERNEL); |
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if (!chip) { |
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pci_disable_device(pci); |
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return -ENOMEM; |
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} |
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|
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spin_lock_init(&chip->reg_lock); |
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chip->card = card; |
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chip->pci = pci; |
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chip->irq = -1; |
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|
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err = pci_request_regions(pci, card->driver); |
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if (err < 0) { |
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kfree(chip); |
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pci_disable_device(pci); |
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return err; |
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} |
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chip->port = pci_resource_start(pci, 0); |
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if (request_irq(pci->irq, snd_via82xx_interrupt, IRQF_SHARED, |
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KBUILD_MODNAME, chip)) { |
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dev_err(card->dev, "unable to grab IRQ %d\n", pci->irq); |
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snd_via82xx_free(chip); |
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return -EBUSY; |
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} |
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chip->irq = pci->irq; |
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card->sync_irq = chip->irq; |
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if (ac97_clock >= 8000 && ac97_clock <= 48000) |
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chip->ac97_clock = ac97_clock; |
|
|
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err = snd_via82xx_chip_init(chip); |
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if (err < 0) { |
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snd_via82xx_free(chip); |
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return err; |
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} |
|
|
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err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops); |
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if (err < 0) { |
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snd_via82xx_free(chip); |
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return err; |
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} |
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|
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/* The 8233 ac97 controller does not implement the master bit |
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* in the pci command register. IMHO this is a violation of the PCI spec. |
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* We call pci_set_master here because it does not hurt. */ |
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pci_set_master(pci); |
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|
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*r_via = chip; |
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return 0; |
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} |
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|
|
|
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static int snd_via82xx_probe(struct pci_dev *pci, |
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const struct pci_device_id *pci_id) |
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{ |
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struct snd_card *card; |
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struct via82xx_modem *chip; |
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int chip_type = 0, card_type; |
|
unsigned int i; |
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int err; |
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|
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err = snd_card_new(&pci->dev, index, id, THIS_MODULE, 0, &card); |
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if (err < 0) |
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return err; |
|
|
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card_type = pci_id->driver_data; |
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switch (card_type) { |
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case TYPE_CARD_VIA82XX_MODEM: |
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strcpy(card->driver, "VIA82XX-MODEM"); |
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sprintf(card->shortname, "VIA 82XX modem"); |
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break; |
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default: |
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dev_err(card->dev, "invalid card type %d\n", card_type); |
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err = -EINVAL; |
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goto __error; |
|
} |
|
|
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err = snd_via82xx_create(card, pci, chip_type, pci->revision, |
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ac97_clock, &chip); |
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if (err < 0) |
|
goto __error; |
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card->private_data = chip; |
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err = snd_via82xx_mixer_new(chip); |
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if (err < 0) |
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goto __error; |
|
|
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err = snd_via686_pcm_new(chip); |
|
if (err < 0) |
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goto __error; |
|
|
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/* disable interrupts */ |
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for (i = 0; i < chip->num_devs; i++) |
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snd_via82xx_channel_reset(chip, &chip->devs[i]); |
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|
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sprintf(card->longname, "%s at 0x%lx, irq %d", |
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card->shortname, chip->port, chip->irq); |
|
|
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snd_via82xx_proc_init(chip); |
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|
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err = snd_card_register(card); |
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if (err < 0) { |
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snd_card_free(card); |
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return err; |
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} |
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pci_set_drvdata(pci, card); |
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return 0; |
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|
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__error: |
|
snd_card_free(card); |
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return err; |
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} |
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|
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static void snd_via82xx_remove(struct pci_dev *pci) |
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{ |
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snd_card_free(pci_get_drvdata(pci)); |
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} |
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|
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static struct pci_driver via82xx_modem_driver = { |
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.name = KBUILD_MODNAME, |
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.id_table = snd_via82xx_modem_ids, |
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.probe = snd_via82xx_probe, |
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.remove = snd_via82xx_remove, |
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.driver = { |
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.pm = SND_VIA82XX_PM_OPS, |
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}, |
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}; |
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|
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module_pci_driver(via82xx_modem_driver);
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