patch-2.3.43 linux/drivers/sound/via82cxxx.c

Next file: linux/drivers/sound/via82cxxx_audio.c
Previous file: linux/drivers/sound/trident.c
Back to the patch index
Back to the overall index

diff -u --recursive --new-file v2.3.42/linux/drivers/sound/via82cxxx.c linux/drivers/sound/via82cxxx.c
@@ -1,721 +0,0 @@
-/*
- * Support for VIA 82Cxxx Audio Codecs
- * Copyright 1999,2000 Jeff Garzik <jgarzik@mandrakesoft.com>
- *
- * Distributed under the GNU GENERAL PUBLIC LICENSE (GPL) Version 2.
- * See the "COPYING" file distributed with this software for more info.
- *
- * Documentation for this driver available as
- * linux/Documentation/sound/via82cxxx.txt.
- *
- * Since the mixer is called from the OSS glue the kernel lock is always held
- * on our AC97 mixing
- */
- 
-
-#define VIA_VERSION	"1.1.2"
-
-
-
-#include <linux/module.h>
-#include <linux/config.h>
-#include <linux/delay.h>
-#include <linux/errno.h>
-#include <linux/fs.h>
-#include <linux/kernel.h>
-#include <linux/pci.h>
-#include <linux/init.h>
-#include <linux/proc_fs.h>
-
-#include <asm/io.h>
-
-#include "sound_config.h"
-#include "soundmodule.h"
-#include "sb.h"
-#include "ac97.h"
-
-#ifndef SOUND_LOCK
-#define SOUND_LOCK do {} while (0)
-#define SOUND_LOCK_END do {} while (0)
-#endif
-
-#define VIA_DEBUG 0	/* define to 1 to enable debugging output and checks */
-#if VIA_DEBUG
-/* note: prints function name for you */
-#define DPRINTK(fmt, args...) printk(KERN_DEBUG "%s: " fmt, __FUNCTION__ , ## args)
-#else
-#define DPRINTK(fmt, args...)
-#endif
-
-#define VIA_NDEBUG 0	/* define to 1 to disable lightweight runtime checks */
-#if VIA_NDEBUG
-#define assert(expr)
-#else
-#define assert(expr) \
-        if(!(expr)) {					\
-        printk( "Assertion failed! %s,%s,%s,line=%d\n",	\
-        #expr,__FILE__,__FUNCTION__,__LINE__);		\
-        }
-#endif
-
-#define arraysize(x)            (sizeof(x)/sizeof(*(x)))
-
-#define MAX_CARDS	2
-
-#define	LINE_SIZE	10
-
-#define VIA_CARD_NAME	"VIA 82Cxxx Audio driver " VIA_VERSION
-#define VIA_MODULE_NAME "via82cxxx"
-#define PFX		VIA_MODULE_NAME ": "
-
-#define VIA_COUNTER_LIMIT	100000
-
-/* 82C686 function 5 (audio codec) PCI configuration registers */
-#define VIA_FUNC_ENABLE		0x42
-#define VIA_PNP_CONTROL		0x43
-#define VIA_AC97_CTRL		0x80
-
-/* PCI configuration register bits and masks */
-#define VIA_CR40_AC97_READY	0x01
-#define VIA_CR40_AC97_LOW_POWER	0x02
-#define VIA_CR40_SECONDARY_READY 0x04
-
-#define VIA_CR41_ACLINK_ENABLE	0x80
-
-#define VIA_CR42_SB_ENABLE	0x01
-#define VIA_CR42_MIDI_ENABLE	0x02
-#define VIA_CR42_FM_ENABLE	0x04
-#define VIA_CR42_GAME_ENABLE	0x08
-
-#define VIA_CR44_SECOND_CODEC_SUPPORT	(1 << 6)
-#define VIA_CR44_AC_LINK_ACCESS		(1 << 7)
-
-#define VIA_CR80_FIRST_CODEC		0
-#define VIA_CR80_SECOND_CODEC		(1 << 30)
-#define VIA_CR80_FIRST_CODEC_VALID	(1 << 25)
-#define VIA_CR80_SECOND_CODEC_VALID	(1 << 27)
-#define VIA_CR80_BUSY			(1 << 24)
-#define VIA_CR80_READ_MODE		(1 << 23)
-#define VIA_CR80_WRITE_MODE		0
-#define VIA_CR80_REG_IDX(idx)		(((idx) & 0x7E) << 16)
-
-struct via_info {
-	struct address_info sb_data;
-	struct address_info opl3_data;
-	struct pci_dev *pdev;
-	struct ac97_hwint ac97;
-	int mixer_oss_dev;
-	int have_ac97;
-};
-static struct via_info		cards [MAX_CARDS];
-static unsigned			num_cards = 0;
-
-
-static const struct {
-	int revision;
-	const char *rev_name;
-} via_chip_revs[] __initdata = {
-	{ 0x10, "A" },
-	{ 0x11, "B" },
-	{ 0x12, "C" },
-	{ 0x13, "D" },
-	{ 0x14, "E" },
-	{ 0x20, "H" },
-};
-
-static inline void via_ac97_write32 (struct pci_dev *pdev, int port, u32 data)
-{
-	struct resource *rsrc = &pdev->resource[0];
-	outw ((u16)data,rsrc->start+port);	
-	outw ((u16)(data>>16),rsrc->start+port+2);	
-}
-
-static inline u32 via_ac97_read32 (struct pci_dev *pdev, int port)
-{
-	struct resource *rsrc = &pdev->resource[0];
-	return
-		((u32)inw (rsrc->start+port)) |
-		(((u32)inw (rsrc->start+port+2)) << 16);
-}
-
-/****************************************************************
- *
- * Intel Audio Codec '97 interface
- *
- *
- */
- 
-static inline void via_ac97_wait_idle (struct pci_dev *pdev)
-{
-	u32 tmp;
-	int counter = VIA_COUNTER_LIMIT;
-	
-	DPRINTK ("ENTER\n");
-
-	assert (pdev != NULL);
-	
-	do {
-		tmp = via_ac97_read32 (pdev,VIA_AC97_CTRL);
-	} while ((tmp & VIA_CR80_BUSY) && (counter-- > 0));
-
-	DPRINTK ("EXIT%s\n", counter > 0 ? "" : ", counter limit reached");
-}
-
-
-static int via_ac97_read_reg (struct ac97_hwint *dev, u8 reg)
-{
-	u32 data;
-	struct via_info *card;
-	struct pci_dev *pdev;
-	
-	DPRINTK ("ENTER\n");
-
-	assert (dev != NULL);
-	assert (dev->driver_private != NULL);
-
-	card = (struct via_info *) dev->driver_private;
-	pdev = card->pdev;
-	assert (pdev != NULL);
-
-	via_ac97_wait_idle (pdev);
-	data =	VIA_CR80_FIRST_CODEC | VIA_CR80_FIRST_CODEC_VALID |
-		VIA_CR80_READ_MODE | VIA_CR80_REG_IDX(reg);
-	via_ac97_write32 (pdev,VIA_AC97_CTRL,data);
-	via_ac97_wait_idle (pdev);
-	data = via_ac97_read32 (pdev,VIA_AC97_CTRL);
-
-#if 0
-	if (! (data & VIA_CR80_FIRST_CODEC_VALID)) {
-		DPRINTK ("EXIT, first codec not valid, returning -1\n");
-		return -1;
-	}
-#endif
-
-	DPRINTK ("EXIT, returning %d\n", data & 0xFFFF);
-	return data & 0xFFFF;
-}
-
-
-static int via_ac97_write_reg (struct ac97_hwint *dev, u8 reg, u16 value)
-{
-	u32 data;
-	struct via_info *card;
-	struct pci_dev *pdev;
-	
-	DPRINTK ("ENTER\n");
-
-	assert (dev != NULL);
-	assert (dev->driver_private != NULL);
-
-	card = (struct via_info *) dev->driver_private;
-	pdev = card->pdev;
-	assert (pdev != NULL);
-
-	via_ac97_wait_idle (pdev);
-	data =	VIA_CR80_FIRST_CODEC | VIA_CR80_FIRST_CODEC_VALID |
-		VIA_CR80_WRITE_MODE | VIA_CR80_REG_IDX(reg) | value;
-	via_ac97_write32 (pdev,VIA_AC97_CTRL,data);
-
-#if 0
-	if (! (data & VIA_CR80_FIRST_CODEC_VALID)) {
-		DPRINTK ("EXIT, first codec invalid, returning -1\n");
-		return -1;
-	}
-#endif
-
-	DPRINTK ("EXIT, returning 0\n");
-	return 0;
-}
-
-
-static int via_ac97_reset (struct ac97_hwint *dev)
-{
-	struct via_info *card;
-	struct pci_dev *pdev;
-	
-	DPRINTK ("ENTER\n");
-
-	assert (dev != NULL);
-	assert (dev->driver_private != NULL);
-
-	card = (struct via_info *) dev->driver_private;
-	pdev = card->pdev;
-	assert (pdev != NULL);
-	
-	pci_write_config_word (pdev, PCI_COMMAND, PCI_COMMAND_IO);
-
-	DPRINTK ("EXIT, returning 0\n");
-	return 0;
-}
-
-
-static struct via_info *via_ac97_find_card_for_mixer (int dev)
-{
-	int x;
-
-	DPRINTK ("ENTER\n");
-
-	for (x = 0; x < num_cards; x++)
-		if (cards[x].mixer_oss_dev == dev) {
-			DPRINTK ("EXIT, returning %p\n", cards + x);
-			return cards + x;
-		}
-
-	DPRINTK ("EXIT, returning 0\n");
-	return NULL;
-}
-
-
-static int
-via_ac97_default_mixer_ioctl (int dev, unsigned int cmd, caddr_t arg)
-{
-	int rc;
-	struct via_info *card = via_ac97_find_card_for_mixer (dev);
-
-	DPRINTK ("ENTER\n");
-
-	if (card != NULL) {
-		rc = ac97_mixer_ioctl (&card->ac97, cmd, arg);
-		DPRINTK ("EXIT, returning %d\n", rc);
-		return rc;
-	}
-	
-	DPRINTK ("EXIT, returning -ENODEV\n");
-	return -ENODEV;
-
-}
-
-static struct mixer_operations via_ac97_mixer_operations =
-{
-	"VIA82Cxxx",
-	"via82cxxxAC97Mixer",
-	via_ac97_default_mixer_ioctl
-};
-
-static int __init via_attach_ac97 (struct via_info *card)
-{
-	int mixer;
-	struct ac97_hwint *mdev;
-
-	DPRINTK ("ENTER\n");
-
-	assert (card != NULL);
-
-	mdev = &card->ac97;
-
-	memset (mdev, 0, sizeof (*mdev));
-	mdev->reset_device = via_ac97_reset;
-	mdev->read_reg = via_ac97_read_reg;
-	mdev->write_reg = via_ac97_write_reg;
-	mdev->driver_private = (void *) card;
-
-	if (ac97_init (mdev)) {
-		printk (KERN_ERR PFX "Unable to init AC97\n");
-		DPRINTK ("EXIT, returning -1\n");
-		return -1;
-	}
-	mixer = sound_alloc_mixerdev ();
-	if (mixer < 0 || num_mixers >= MAX_MIXER_DEV) {
-		printk (KERN_ERR PFX "Unable to alloc mixerdev\n");
-		DPRINTK ("EXIT, returning -1\n");
-		return -1;
-	}
-	mixer_devs[mixer] = &via_ac97_mixer_operations;
-	card->mixer_oss_dev = mixer;
-
-	/* Some reasonable default values.  */
-	ac97_set_mixer (mdev, SOUND_MIXER_VOLUME, (85 << 8) | 85);
-	ac97_set_mixer (mdev, SOUND_MIXER_SPEAKER, 100);
-	ac97_set_mixer (mdev, SOUND_MIXER_PCM, (65 << 8) | 65);
-	ac97_set_mixer (mdev, SOUND_MIXER_CD, (65 << 8) | 65);
-
-	printk (KERN_INFO PFX "Initialized AC97 mixer\n");
-	
-	card->have_ac97 = mixer;
-	
-	DPRINTK ("EXIT, returning 0\n");
-	return 0;
-}
-
-
-static void via_unload_ac97 (struct via_info *card)
-{
-	DPRINTK ("ENTER\n");
-
-	assert (card != NULL);
-
-	if (card->have_ac97 >= 0)
-		sound_unload_mixerdev (card->have_ac97);
-
-	DPRINTK ("EXIT\n");
-}
-
-
-#ifdef CONFIG_PROC_FS
-
-/****************************************************************
- *
- * /proc/driver/via82cxxx/info
- *
- *
- */
-
-static int via_info_read_proc (char *page, char **start, off_t off,
-			       int count, int *eof, void *data)
-{
-#define YN(val,bit) (((val) & (bit)) ? "yes" : "no")
-
-	int len = 0, i;
-	u8 r40, r41, r42, r44;
-	
-	DPRINTK ("ENTER\n");
-
-	len += sprintf (page+len, VIA_CARD_NAME "\n\n");
-	
-	for (i = 0; i < num_cards; i++) {
-		pci_read_config_byte (cards[i].pdev, 0x40, &r40);
-		pci_read_config_byte (cards[i].pdev, 0x42, &r41);
-		pci_read_config_byte (cards[i].pdev, 0x42, &r42);
-		pci_read_config_byte (cards[i].pdev, 0x44, &r44);
-	
-		len += sprintf (page+len,
-			"40  AC97 Codec Ready: %s\n"
-			"    AC97 Codec Low-power: %s\n"
-			"    Secondary Codec Ready: %s\n"
-
-			"41  AC-Link Interface Enable: %s\n"
-
-			"42  Game port enabled: %s\n"
-			"    SoundBlaster enabled: %s\n"
-			"    FM enabled: %s\n"
-			"    MIDI enabled: %s\n"
-			
-			"44  AC-Link Interface Access: %s\n"
-			"    Secondary Codec Support: %s\n"
-			
-			"\n",
-			
-			YN (r40, VIA_CR40_AC97_READY),
-			YN (r40, VIA_CR40_AC97_LOW_POWER),
-			YN (r40, VIA_CR40_SECONDARY_READY),
-
-			YN (r41, VIA_CR41_ACLINK_ENABLE),
-
-			YN (r42, VIA_CR42_GAME_ENABLE),
-			YN (r42, VIA_CR42_SB_ENABLE),
-			YN (r42, VIA_CR42_FM_ENABLE),
-			YN (r42, VIA_CR42_MIDI_ENABLE),
-
-			YN (r44, VIA_CR44_AC_LINK_ACCESS),
-			YN (r44, VIA_CR44_SECOND_CODEC_SUPPORT)
-			
-			);
-	}
-	
-	DPRINTK("EXIT, returning %d\n", len);
-	return len;
-
-#undef YN
-}
-
-
-/****************************************************************
- *
- * /proc/driver/via82cxxx
- *
- *
- */
-
-static int __init via_init_proc (void)
-{
-	DPRINTK ("ENTER\n");
-
-	proc_mkdir ("driver/via_audio", 0);
-	create_proc_read_entry ("driver/via_audio/info", 0, 0, via_info_read_proc, NULL);
-	
-	DPRINTK("EXIT\n");
-	return 0;
-}
-
-
-
-static void __exit via_cleanup_proc (void)
-{
-	DPRINTK ("ENTER\n");
-	remove_proc_entry ("driver/via_audio/info", NULL);
-	remove_proc_entry ("driver/via_audio", NULL);
-	DPRINTK("EXIT\n");
-}
-
-
-#else
-
-static inline int via_init_proc (void) { return 0; }
-static inline void via_cleanup_proc (void) {}
-
-#endif /* CONFIG_PROC_FS */
-
-
-/****************************************************************
- *
- * Legacy SoundBlaster Pro, FM support via OSS
- *
- *
- */
-
-static void __init via_attach_sb(struct address_info *hw_config)
-{
-	DPRINTK ("ENTER\n");
-
-	if(!sb_dsp_init(hw_config))
-		hw_config->slots[0] = -1;
-
-	DPRINTK("EXIT\n");
-}
-
-
-static int __init via_probe_sb(struct address_info *hw_config)
-{
-	DPRINTK ("ENTER\n");
-
-	if (check_region(hw_config->io_base, 16))
-	{
-		printk(KERN_DEBUG PFX "SBPro port 0x%x is already in use\n",
-		       hw_config->io_base);
-		return 0;
-	}
-	DPRINTK("EXIT after sb_dsp_detect\n");
-	return sb_dsp_detect(hw_config, 0, 0);
-}
-
-
-static void __exit via_unload_sb(struct address_info *hw_config)
-{
-	DPRINTK ("ENTER\n");
-
-	if(hw_config->slots[0] != -1)
-		sb_dsp_unload(hw_config, 1);
-
-	DPRINTK("EXIT\n");
-}
-
-
-static const struct {
-	int sb_irq,
-	    sb_dma,
-	    midi_base,
-	    sb_io_base;
-} via_pnp_data[] __initdata = {
-	{ 5, 0, 0x300, 0x220 },
-	{ 7, 1, 0x310, 0x240 },
-	{ 9, 2, 0x320, 0x260 },
-	{ 10,3, 0x330, 0x280 },
-};
-
-
-/****************************************************************
- *
- * Chip setup and kernel registration
- *
- *
- */
-
-static int __init via82cxxx_install (struct pci_dev *pcidev)
-{
-	int sb_io_base;
-	int sb_irq;
-	int sb_dma;
-	int midi_base, rc;
-	u8 tmp8;
-	struct via_info *card = &cards[num_cards];
-	
-	DPRINTK ("ENTER\n");
-
-	card->pdev = pcidev;
-	card->have_ac97 = -1;
-	
-	/* turn off legacy features, if not already */
-	pci_read_config_byte (pcidev, VIA_FUNC_ENABLE, &tmp8);
-	tmp8 &= ~(VIA_CR42_SB_ENABLE | VIA_CR42_MIDI_ENABLE |
-		  VIA_CR42_FM_ENABLE);
-	pci_write_config_byte (pcidev, VIA_FUNC_ENABLE, tmp8);
-
-	/* 
-	 * try to init AC97 mixer device
-	 */
-	rc = via_attach_ac97 (card);
-	if (rc) {
-		printk (KERN_WARNING PFX
-			"AC97 init failed, SB legacy mode only\n");
-	}
-	
-	/* turn on legacy features */
-	pci_read_config_byte (pcidev, VIA_FUNC_ENABLE, &tmp8);
-	tmp8 |= VIA_CR42_SB_ENABLE | VIA_CR42_MIDI_ENABLE |
-		VIA_CR42_FM_ENABLE;
-	pci_write_config_byte (pcidev, VIA_FUNC_ENABLE, tmp8);
-
-	/* read legacy PNP info byte */
-	pci_read_config_byte (pcidev, VIA_PNP_CONTROL, &tmp8);
-	pci_write_config_byte (pcidev, VIA_PNP_CONTROL, tmp8);
-	
-	sb_irq = via_pnp_data[((tmp8 >> 6) & 0x03)].sb_irq;
-	sb_dma = via_pnp_data[((tmp8 >> 4) & 0x03)].sb_dma;
-	midi_base = via_pnp_data[((tmp8 >> 2) & 0x03)].midi_base;
-	sb_io_base = via_pnp_data[(tmp8 & 0x03)].sb_io_base;
-
-	udelay(100);
-	
-	printk(KERN_INFO PFX "legacy "
-	       "MIDI: 0x%X, SB: 0x%X / %d IRQ / %d DMA\n",
-		midi_base, sb_io_base, sb_irq, sb_dma);
-		
-	card->sb_data.name = VIA_CARD_NAME;
-	card->sb_data.card_subtype = MDL_SBPRO;
-	card->sb_data.io_base = sb_io_base;
-	card->sb_data.irq = sb_irq;
-	card->sb_data.dma = sb_dma;
-	
-	/* register legacy SoundBlaster Pro */
-	if (!via_probe_sb (&card->sb_data)) {
-		printk (KERN_ERR PFX
-			"SB probe @ 0x%X failed, aborting\n",
-			sb_io_base);
-		DPRINTK ("EXIT, returning -1\n");
-		return -1;
-	}
-	via_attach_sb (&card->sb_data);
-
-	card->opl3_data.name = card->sb_data.name;
-	card->opl3_data.io_base = midi_base;
-	card->opl3_data.irq = -1;
-	
-	/* register legacy MIDI */
-	if (!probe_uart401 (&card->opl3_data)) {
-		printk (KERN_WARNING PFX
-			"MIDI probe @ 0x%X failed, continuing\n",
-			midi_base);
-		card->opl3_data.io_base = 0;
-	} else {
-		attach_uart401 (&card->opl3_data);
-	}
-
-	num_cards++;	
-	DPRINTK ("EXIT, returning 0\n");
-	return 0;
-}
-
-
-/*
- * 	This loop walks the PCI configuration database and finds where
- *	the sound cards are.
- *
- *	Note - only a single PCI scan occurs, eliminating possibility
- *	of multiple audio chips
- *
- */
- 
-static int __init probe_via82cxxx (void)
-{
-	struct pci_dev *pcidev = NULL;
-
-	DPRINTK ("ENTER\n");
-
-	pcidev = pci_find_device (PCI_VENDOR_ID_VIA,
-				  PCI_DEVICE_ID_VIA_82C686_5, NULL);
-
-	if (!pcidev || via82cxxx_install (pcidev) != 0) {
-		printk (KERN_ERR PFX "audio init failed\n");
-		DPRINTK ("EXIT, returning -1\n");
-		return -1;
-	}
-
-	DPRINTK ("EXIT, returning 0\n");
-	return 0;
-}
-
-
-/*
- *	This function is called when the user or kernel loads the 
- *	module into memory.
- */
-
-
-static int __init init_via82cxxx_module(void)
-{
-	u8 tmp;
-	int i;
-	const char *rev = "unknown!";
-	
-	memset (cards, 0, sizeof (cards));
-	
-	DPRINTK ("ENTER\n");
-
-	if (!pci_present ()) {
-		printk (KERN_DEBUG PFX "PCI not present, exiting\n");
-		DPRINTK ("EXIT, returning -ENODEV\n");
-		return -ENODEV;
-	}
-
-	if (probe_via82cxxx() != 0) {
-		printk(KERN_ERR PFX "probe failed, aborting\n");
-		/* XXX unload cards registered so far, if any */
-		DPRINTK ("EXIT, returning -ENODEV\n");
-		return -ENODEV;
-	}
-
-	pci_read_config_byte (cards[0].pdev, PCI_REVISION_ID, &tmp);
-	for (i = 0; i < arraysize(via_chip_revs); i++)
-		if (via_chip_revs[i].revision == tmp) {
-			rev = via_chip_revs[i].rev_name;
-			break;
-		}
-	printk (KERN_INFO PFX VIA_CARD_NAME " loaded\n");
-	printk (KERN_INFO PFX "Chip rev %s.  Features: SBPro compat%s%s\n",
-		rev,
-		cards[0].opl3_data.io_base == 0 ? "" : ", MPU-401 MIDI",
-		cards[0].have_ac97 == -1 ? "" : ", AC97 mixer");
-	
-	if (via_init_proc () != 0) {
-		printk (KERN_WARNING PFX
-			"Unable to init experimental /proc, ignoring\n");
-	}
-
-	/*
-	 *	Binds us to the sound subsystem	
-	 */
-	SOUND_LOCK;
-	DPRINTK ("EXIT, returning 0\n");
-	return 0;
-}
-
-/*
- *	This is called when it is removed. It will only be removed 
- *	when its use count is 0. For sound the SOUND_LOCK/SOUND_UNLOCK
- *	macros hide the entire work for this.
- */
- 
-static void __exit cleanup_via82cxxx_module(void)
-{
-	DPRINTK("ENTER\n");
-	
-	if (cards[0].opl3_data.io_base)
-		unload_uart401 (&cards[0].opl3_data);
-
-	via_unload_sb (&cards[0].sb_data);
-	
-	via_unload_ac97 (&cards[0]);
-
-	via_cleanup_proc ();
-	
-	/*
-	 *	Final clean up with the sound layer
-	 */
-	SOUND_LOCK_END;
-
-	DPRINTK("EXIT\n");
-}
-
-module_init(init_via82cxxx_module);
-module_exit(cleanup_via82cxxx_module);
-
FUNET's LINUX-ADM group, linux-adm@nic.funet.fi
TCL-scripts by Sam Shen (who was at: slshen@lbl.gov)