Linux-2.6.12-rc2v2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!

1 files changed, 1462 insertions, 0 deletions

diff --git a/sound/pci/intel8x0m.c b/sound/pci/intel8x0m.c
new file mode 100644
index 000000000000..67da096d659b
--- /dev/null
+++ b/sound/pci/intel8x0m.c
@@ -0,0 +1,1462 @@
+/*
+ *   ALSA modem driver for Intel ICH (i8x0) chipsets
+ *
+ *	Copyright (c) 2000 Jaroslav Kysela <perex@suse.cz>
+ *
+ *   This is modified (by Sasha Khapyorsky <sashak@smlink.com>) version
+ *   of ALSA ICH sound driver intel8x0.c .
+ *
+ *
+ *   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
+ *
+ */      
+
+#include <sound/driver.h>
+#include <asm/io.h>
+#include <linux/delay.h>
+#include <linux/interrupt.h>
+#include <linux/init.h>
+#include <linux/pci.h>
+#include <linux/slab.h>
+#include <linux/moduleparam.h>
+#include <sound/core.h>
+#include <sound/pcm.h>
+#include <sound/ac97_codec.h>
+#include <sound/info.h>
+#include <sound/control.h>
+#include <sound/initval.h>
+
+MODULE_AUTHOR("Jaroslav Kysela <perex@suse.cz>");
+MODULE_DESCRIPTION("Intel 82801AA,82901AB,i810,i820,i830,i840,i845,MX440; SiS 7013; NVidia MCP/2/2S/3 modems");
+MODULE_LICENSE("GPL");
+MODULE_SUPPORTED_DEVICE("{{Intel,82801AA-ICH},"
+		"{Intel,82901AB-ICH0},"
+		"{Intel,82801BA-ICH2},"
+		"{Intel,82801CA-ICH3},"
+		"{Intel,82801DB-ICH4},"
+		"{Intel,ICH5},"
+		"{Intel,ICH6},"
+		"{Intel,ICH7},"
+	        "{Intel,MX440},"
+		"{SiS,7013},"
+		"{NVidia,NForce Modem},"
+		"{NVidia,NForce2 Modem},"
+		"{NVidia,NForce2s Modem},"
+		"{NVidia,NForce3 Modem},"
+		"{AMD,AMD768}}");
+
+static int index[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = -2}; /* Exclude the first card */
+static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;	/* ID for this card */
+static int enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP;	/* Enable this card */
+static int ac97_clock[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS - 1)] = 0};
+
+module_param_array(index, int, NULL, 0444);
+MODULE_PARM_DESC(index, "Index value for Intel i8x0 modemcard.");
+module_param_array(id, charp, NULL, 0444);
+MODULE_PARM_DESC(id, "ID string for Intel i8x0 modemcard.");
+module_param_array(enable, bool, NULL, 0444);
+MODULE_PARM_DESC(enable, "Enable Intel i8x0 modemcard.");
+module_param_array(ac97_clock, int, NULL, 0444);
+MODULE_PARM_DESC(ac97_clock, "AC'97 codec clock (0 = auto-detect).");
+
+/*
+ *  Direct registers
+ */
+
+#ifndef PCI_DEVICE_ID_INTEL_82801_6
+#define PCI_DEVICE_ID_INTEL_82801_6     0x2416
+#endif
+#ifndef PCI_DEVICE_ID_INTEL_82901_6
+#define PCI_DEVICE_ID_INTEL_82901_6     0x2426
+#endif
+#ifndef PCI_DEVICE_ID_INTEL_82801BA_6
+#define PCI_DEVICE_ID_INTEL_82801BA_6   0x2446
+#endif
+#ifndef PCI_DEVICE_ID_INTEL_440MX_6
+#define PCI_DEVICE_ID_INTEL_440MX_6     0x7196
+#endif
+#ifndef PCI_DEVICE_ID_INTEL_ICH3_6
+#define PCI_DEVICE_ID_INTEL_ICH3_6	0x2486
+#endif
+#ifndef PCI_DEVICE_ID_INTEL_ICH4_6
+#define PCI_DEVICE_ID_INTEL_ICH4_6	0x24c6
+#endif
+#ifndef PCI_DEVICE_ID_INTEL_ICH5_6
+#define PCI_DEVICE_ID_INTEL_ICH5_6	0x24d6
+#endif
+#ifndef PCI_DEVICE_ID_INTEL_ICH6_6
+#define PCI_DEVICE_ID_INTEL_ICH6_6	0x266d
+#endif
+#ifndef PCI_DEVICE_ID_INTEL_ICH7_6
+#define PCI_DEVICE_ID_INTEL_ICH7_6	0x27dd
+#endif
+#ifndef PCI_DEVICE_ID_SI_7013
+#define PCI_DEVICE_ID_SI_7013		0x7013
+#endif
+#ifndef PCI_DEVICE_ID_NVIDIA_MCP_MODEM
+#define PCI_DEVICE_ID_NVIDIA_MCP_MODEM	0x01c1
+#endif
+#ifndef PCI_DEVICE_ID_NVIDIA_MCP2_MODEM
+#define PCI_DEVICE_ID_NVIDIA_MCP2_MODEM	0x0069
+#endif
+#ifndef PCI_DEVICE_ID_NVIDIA_MCP2S_MODEM
+#define PCI_DEVICE_ID_NVIDIA_MCP2S_MODEM 0x0089
+#endif
+#ifndef PCI_DEVICE_ID_NVIDIA_MCP3_MODEM
+#define PCI_DEVICE_ID_NVIDIA_MCP3_MODEM	0x00d9
+#endif
+
+
+enum { DEVICE_INTEL, DEVICE_SIS, DEVICE_ALI, DEVICE_NFORCE };
+
+#define ICHREG(x) ICH_REG_##x
+
+#define DEFINE_REGSET(name,base) \
+enum { \
+	ICH_REG_##name##_BDBAR	= base + 0x0,	/* dword - buffer descriptor list base address */ \
+	ICH_REG_##name##_CIV	= base + 0x04,	/* byte - current index value */ \
+	ICH_REG_##name##_LVI	= base + 0x05,	/* byte - last valid index */ \
+	ICH_REG_##name##_SR	= base + 0x06,	/* byte - status register */ \
+	ICH_REG_##name##_PICB	= base + 0x08,	/* word - position in current buffer */ \
+	ICH_REG_##name##_PIV	= base + 0x0a,	/* byte - prefetched index value */ \
+	ICH_REG_##name##_CR	= base + 0x0b,	/* byte - control register */ \
+};
+
+/* busmaster blocks */
+DEFINE_REGSET(OFF, 0);		/* offset */
+
+/* values for each busmaster block */
+
+/* LVI */
+#define ICH_REG_LVI_MASK		0x1f
+
+/* SR */
+#define ICH_FIFOE			0x10	/* FIFO error */
+#define ICH_BCIS			0x08	/* buffer completion interrupt status */
+#define ICH_LVBCI			0x04	/* last valid buffer completion interrupt */
+#define ICH_CELV			0x02	/* current equals last valid */
+#define ICH_DCH				0x01	/* DMA controller halted */
+
+/* PIV */
+#define ICH_REG_PIV_MASK		0x1f	/* mask */
+
+/* CR */
+#define ICH_IOCE			0x10	/* interrupt on completion enable */
+#define ICH_FEIE			0x08	/* fifo error interrupt enable */
+#define ICH_LVBIE			0x04	/* last valid buffer interrupt enable */
+#define ICH_RESETREGS			0x02	/* reset busmaster registers */
+#define ICH_STARTBM			0x01	/* start busmaster operation */
+
+
+/* global block */
+#define ICH_REG_GLOB_CNT		0x3c	/* dword - global control */
+#define   ICH_TRIE		0x00000040	/* tertiary resume interrupt enable */
+#define   ICH_SRIE		0x00000020	/* secondary resume interrupt enable */
+#define   ICH_PRIE		0x00000010	/* primary resume interrupt enable */
+#define   ICH_ACLINK		0x00000008	/* AClink shut off */
+#define   ICH_AC97WARM		0x00000004	/* AC'97 warm reset */
+#define   ICH_AC97COLD		0x00000002	/* AC'97 cold reset */
+#define   ICH_GIE		0x00000001	/* GPI interrupt enable */
+#define ICH_REG_GLOB_STA		0x40	/* dword - global status */
+#define   ICH_TRI		0x20000000	/* ICH4: tertiary (AC_SDIN2) resume interrupt */
+#define   ICH_TCR		0x10000000	/* ICH4: tertiary (AC_SDIN2) codec ready */
+#define   ICH_BCS		0x08000000	/* ICH4: bit clock stopped */
+#define   ICH_SPINT		0x04000000	/* ICH4: S/PDIF interrupt */
+#define   ICH_P2INT		0x02000000	/* ICH4: PCM2-In interrupt */
+#define   ICH_M2INT		0x01000000	/* ICH4: Mic2-In interrupt */
+#define   ICH_SAMPLE_CAP	0x00c00000	/* ICH4: sample capability bits (RO) */
+#define   ICH_MULTICHAN_CAP	0x00300000	/* ICH4: multi-channel capability bits (RO) */
+#define   ICH_MD3		0x00020000	/* modem power down semaphore */
+#define   ICH_AD3		0x00010000	/* audio power down semaphore */
+#define   ICH_RCS		0x00008000	/* read completion status */
+#define   ICH_BIT3		0x00004000	/* bit 3 slot 12 */
+#define   ICH_BIT2		0x00002000	/* bit 2 slot 12 */
+#define   ICH_BIT1		0x00001000	/* bit 1 slot 12 */
+#define   ICH_SRI		0x00000800	/* secondary (AC_SDIN1) resume interrupt */
+#define   ICH_PRI		0x00000400	/* primary (AC_SDIN0) resume interrupt */
+#define   ICH_SCR		0x00000200	/* secondary (AC_SDIN1) codec ready */
+#define   ICH_PCR		0x00000100	/* primary (AC_SDIN0) codec ready */
+#define   ICH_MCINT		0x00000080	/* MIC capture interrupt */
+#define   ICH_POINT		0x00000040	/* playback interrupt */
+#define   ICH_PIINT		0x00000020	/* capture interrupt */
+#define   ICH_NVSPINT		0x00000010	/* nforce spdif interrupt */
+#define   ICH_MOINT		0x00000004	/* modem playback interrupt */
+#define   ICH_MIINT		0x00000002	/* modem capture interrupt */
+#define   ICH_GSCI		0x00000001	/* GPI status change interrupt */
+#define ICH_REG_ACC_SEMA		0x44	/* byte - codec write semaphore */
+#define   ICH_CAS		0x01		/* codec access semaphore */
+
+#define ICH_MAX_FRAGS		32		/* max hw frags */
+
+
+/*
+ *  
+ */
+
+enum { ICHD_MDMIN, ICHD_MDMOUT, ICHD_MDMLAST = ICHD_MDMOUT };
+enum { ALID_MDMIN, ALID_MDMOUT, ALID_MDMLAST = ALID_MDMOUT };
+
+#define get_ichdev(substream) (ichdev_t *)(substream->runtime->private_data)
+
+typedef struct {
+	unsigned int ichd;			/* ich device number */
+	unsigned long reg_offset;		/* offset to bmaddr */
+	u32 *bdbar;				/* CPU address (32bit) */
+	unsigned int bdbar_addr;		/* PCI bus address (32bit) */
+	snd_pcm_substream_t *substream;
+	unsigned int physbuf;			/* physical address (32bit) */
+        unsigned int size;
+        unsigned int fragsize;
+        unsigned int fragsize1;
+        unsigned int position;
+        int frags;
+        int lvi;
+        int lvi_frag;
+	int civ;
+	int ack;
+	int ack_reload;
+	unsigned int ack_bit;
+	unsigned int roff_sr;
+	unsigned int roff_picb;
+	unsigned int int_sta_mask;		/* interrupt status mask */
+	unsigned int ali_slot;			/* ALI DMA slot */
+	ac97_t *ac97;
+} ichdev_t;
+
+typedef struct _snd_intel8x0m intel8x0_t;
+
+struct _snd_intel8x0m {
+	unsigned int device_type;
+
+	int irq;
+
+	unsigned int mmio;
+	unsigned long addr;
+	void __iomem *remap_addr;
+	unsigned int bm_mmio;
+	unsigned long bmaddr;
+	void __iomem *remap_bmaddr;
+
+	struct pci_dev *pci;
+	snd_card_t *card;
+
+	int pcm_devs;
+	snd_pcm_t *pcm[2];
+	ichdev_t ichd[2];
+
+	unsigned int in_ac97_init: 1;
+
+	ac97_bus_t *ac97_bus;
+	ac97_t *ac97;
+
+	spinlock_t reg_lock;
+	
+	struct snd_dma_buffer bdbars;
+	u32 bdbars_count;
+	u32 int_sta_reg;		/* interrupt status register */
+	u32 int_sta_mask;		/* interrupt status mask */
+	unsigned int pcm_pos_shift;
+};
+
+static struct pci_device_id snd_intel8x0m_ids[] = {
+	{ 0x8086, 0x2416, PCI_ANY_ID, PCI_ANY_ID, 0, 0, DEVICE_INTEL },	/* 82801AA */
+	{ 0x8086, 0x2426, PCI_ANY_ID, PCI_ANY_ID, 0, 0, DEVICE_INTEL },	/* 82901AB */
+	{ 0x8086, 0x2446, PCI_ANY_ID, PCI_ANY_ID, 0, 0, DEVICE_INTEL },	/* 82801BA */
+	{ 0x8086, 0x2486, PCI_ANY_ID, PCI_ANY_ID, 0, 0, DEVICE_INTEL },	/* ICH3 */
+	{ 0x8086, 0x24c6, PCI_ANY_ID, PCI_ANY_ID, 0, 0, DEVICE_INTEL }, /* ICH4 */
+	{ 0x8086, 0x24d6, PCI_ANY_ID, PCI_ANY_ID, 0, 0, DEVICE_INTEL }, /* ICH5 */
+	{ 0x8086, 0x266d, PCI_ANY_ID, PCI_ANY_ID, 0, 0, DEVICE_INTEL },	/* ICH6 */
+	{ 0x8086, 0x27dd, PCI_ANY_ID, PCI_ANY_ID, 0, 0, DEVICE_INTEL },	/* ICH7 */
+	{ 0x8086, 0x7196, PCI_ANY_ID, PCI_ANY_ID, 0, 0, DEVICE_INTEL },	/* 440MX */
+	{ 0x1022, 0x7446, PCI_ANY_ID, PCI_ANY_ID, 0, 0, DEVICE_INTEL },	/* AMD768 */
+	{ 0x1039, 0x7013, PCI_ANY_ID, PCI_ANY_ID, 0, 0, DEVICE_SIS },	/* SI7013 */
+	{ 0x10de, 0x01c1, PCI_ANY_ID, PCI_ANY_ID, 0, 0, DEVICE_NFORCE }, /* NFORCE */
+	{ 0x10de, 0x0069, PCI_ANY_ID, PCI_ANY_ID, 0, 0, DEVICE_NFORCE }, /* NFORCE2 */
+	{ 0x10de, 0x0089, PCI_ANY_ID, PCI_ANY_ID, 0, 0, DEVICE_NFORCE }, /* NFORCE2s */
+	{ 0x10de, 0x00d9, PCI_ANY_ID, PCI_ANY_ID, 0, 0, DEVICE_NFORCE }, /* NFORCE3 */
+#if 0
+	{ 0x1022, 0x746d, PCI_ANY_ID, PCI_ANY_ID, 0, 0, DEVICE_INTEL },	/* AMD8111 */
+	{ 0x10b9, 0x5455, PCI_ANY_ID, PCI_ANY_ID, 0, 0, DEVICE_ALI },   /* Ali5455 */
+#endif
+	{ 0, }
+};
+static int snd_intel8x0m_switch_default_get(snd_kcontrol_t *kcontrol,
+					    snd_ctl_elem_value_t *ucontrol);
+static int snd_intel8x0m_switch_default_put(snd_kcontrol_t *kcontrol,
+					    snd_ctl_elem_value_t *ucontrol);
+static int snd_intel8x0m_switch_default_info(snd_kcontrol_t *kcontrol,
+					     snd_ctl_elem_info_t *uinfo);
+
+#define PRIVATE_VALUE_INITIALIZER(r,m) (((r) & 0xffff) << 16 | ((m) & 0xffff))
+#define PRIVATE_VALUE_MASK(control) ((control)->private_value & 0xffff)
+#define PRIVATE_VALUE_REG(control) (((control)->private_value >> 16) & 0xffff)
+
+static snd_kcontrol_new_t snd_intel8x0m_mixer_switches[] __devinitdata = {
+  { .name  = "Off-hook Switch",
+    .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
+    .info  = snd_intel8x0m_switch_default_info,
+    .get   = snd_intel8x0m_switch_default_get,
+    .put   = snd_intel8x0m_switch_default_put,
+    .private_value = PRIVATE_VALUE_INITIALIZER(AC97_GPIO_STATUS,AC97_GPIO_LINE1_OH)
+  }
+};
+
+MODULE_DEVICE_TABLE(pci, snd_intel8x0m_ids);
+
+static int snd_intel8x0m_switch_default_info(snd_kcontrol_t *kcontrol,
+					     snd_ctl_elem_info_t *uinfo)
+{
+	uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
+	uinfo->count = 1;
+	uinfo->value.integer.min = 0;
+	uinfo->value.integer.max = 1;
+	return 0;
+}
+
+static int snd_intel8x0m_switch_default_get(snd_kcontrol_t *kcontrol,
+					    snd_ctl_elem_value_t *ucontrol)
+{
+	unsigned short mask = PRIVATE_VALUE_MASK(kcontrol);
+	unsigned short reg = PRIVATE_VALUE_REG(kcontrol);
+	intel8x0_t *chip = snd_kcontrol_chip(kcontrol);
+	unsigned int status;
+	status = snd_ac97_read(chip->ac97, reg) & mask ? 1 : 0;
+	ucontrol->value.integer.value[0] = status;
+	return 0;
+}
+static int snd_intel8x0m_switch_default_put(snd_kcontrol_t *kcontrol,
+					    snd_ctl_elem_value_t *ucontrol)
+{
+	unsigned short mask = PRIVATE_VALUE_MASK(kcontrol);
+	unsigned short reg = PRIVATE_VALUE_REG(kcontrol);
+	intel8x0_t *chip = snd_kcontrol_chip(kcontrol);
+	unsigned short new_status = ucontrol->value.integer.value[0] ? mask : ~mask;
+	return snd_ac97_update_bits(chip->ac97, reg,
+				    mask, new_status);
+}
+/*
+ *  Lowlevel I/O - busmaster
+ */
+
+static u8 igetbyte(intel8x0_t *chip, u32 offset)
+{
+	if (chip->bm_mmio)
+		return readb(chip->remap_bmaddr + offset);
+	else
+		return inb(chip->bmaddr + offset);
+}
+
+static u16 igetword(intel8x0_t *chip, u32 offset)
+{
+	if (chip->bm_mmio)
+		return readw(chip->remap_bmaddr + offset);
+	else
+		return inw(chip->bmaddr + offset);
+}
+
+static u32 igetdword(intel8x0_t *chip, u32 offset)
+{
+	if (chip->bm_mmio)
+		return readl(chip->remap_bmaddr + offset);
+	else
+		return inl(chip->bmaddr + offset);
+}
+
+static void iputbyte(intel8x0_t *chip, u32 offset, u8 val)
+{
+	if (chip->bm_mmio)
+		writeb(val, chip->remap_bmaddr + offset);
+	else
+		outb(val, chip->bmaddr + offset);
+}
+
+static void iputword(intel8x0_t *chip, u32 offset, u16 val)
+{
+	if (chip->bm_mmio)
+		writew(val, chip->remap_bmaddr + offset);
+	else
+		outw(val, chip->bmaddr + offset);
+}
+
+static void iputdword(intel8x0_t *chip, u32 offset, u32 val)
+{
+	if (chip->bm_mmio)
+		writel(val, chip->remap_bmaddr + offset);
+	else
+		outl(val, chip->bmaddr + offset);
+}
+
+/*
+ *  Lowlevel I/O - AC'97 registers
+ */
+
+static u16 iagetword(intel8x0_t *chip, u32 offset)
+{
+	if (chip->mmio)
+		return readw(chip->remap_addr + offset);
+	else
+		return inw(chip->addr + offset);
+}
+
+static void iaputword(intel8x0_t *chip, u32 offset, u16 val)
+{
+	if (chip->mmio)
+		writew(val, chip->remap_addr + offset);
+	else
+		outw(val, chip->addr + offset);
+}
+
+/*
+ *  Basic I/O
+ */
+
+/*
+ * access to AC97 codec via normal i/o (for ICH and SIS7013)
+ */
+
+/* return the GLOB_STA bit for the corresponding codec */
+static unsigned int get_ich_codec_bit(intel8x0_t *chip, unsigned int codec)
+{
+	static unsigned int codec_bit[3] = {
+		ICH_PCR, ICH_SCR, ICH_TCR
+	};
+	snd_assert(codec < 3, return ICH_PCR);
+	return codec_bit[codec];
+}
+
+static int snd_intel8x0m_codec_semaphore(intel8x0_t *chip, unsigned int codec)
+{
+	int time;
+	
+	if (codec > 1)
+		return -EIO;
+	codec = get_ich_codec_bit(chip, codec);
+
+	/* codec ready ? */
+	if ((igetdword(chip, ICHREG(GLOB_STA)) & codec) == 0)
+		return -EIO;
+
+	/* Anyone holding a semaphore for 1 msec should be shot... */
+	time = 100;
+      	do {
+      		if (!(igetbyte(chip, ICHREG(ACC_SEMA)) & ICH_CAS))
+      			return 0;
+		udelay(10);
+	} while (time--);
+
+	/* access to some forbidden (non existant) ac97 registers will not
+	 * reset the semaphore. So even if you don't get the semaphore, still
+	 * continue the access. We don't need the semaphore anyway. */
+	snd_printk("codec_semaphore: semaphore is not ready [0x%x][0x%x]\n",
+			igetbyte(chip, ICHREG(ACC_SEMA)), igetdword(chip, ICHREG(GLOB_STA)));
+	iagetword(chip, 0);	/* clear semaphore flag */
+	/* I don't care about the semaphore */
+	return -EBUSY;
+}
+ 
+static void snd_intel8x0_codec_write(ac97_t *ac97,
+				     unsigned short reg,
+				     unsigned short val)
+{
+	intel8x0_t *chip = ac97->private_data;
+	
+	if (snd_intel8x0m_codec_semaphore(chip, ac97->num) < 0) {
+		if (! chip->in_ac97_init)
+			snd_printk("codec_write %d: semaphore is not ready for register 0x%x\n", ac97->num, reg);
+	}
+	iaputword(chip, reg + ac97->num * 0x80, val);
+}
+
+static unsigned short snd_intel8x0_codec_read(ac97_t *ac97,
+					      unsigned short reg)
+{
+	intel8x0_t *chip = ac97->private_data;
+	unsigned short res;
+	unsigned int tmp;
+
+	if (snd_intel8x0m_codec_semaphore(chip, ac97->num) < 0) {
+		if (! chip->in_ac97_init)
+			snd_printk("codec_read %d: semaphore is not ready for register 0x%x\n", ac97->num, reg);
+		res = 0xffff;
+	} else {
+		res = iagetword(chip, reg + ac97->num * 0x80);
+		if ((tmp = igetdword(chip, ICHREG(GLOB_STA))) & ICH_RCS) {
+			/* reset RCS and preserve other R/WC bits */
+			iputdword(chip, ICHREG(GLOB_STA), tmp & ~(ICH_SRI|ICH_PRI|ICH_TRI|ICH_GSCI));
+			if (! chip->in_ac97_init)
+				snd_printk("codec_read %d: read timeout for register 0x%x\n", ac97->num, reg);
+			res = 0xffff;
+		}
+	}
+	return res;
+}
+
+
+/*
+ * DMA I/O
+ */
+static void snd_intel8x0_setup_periods(intel8x0_t *chip, ichdev_t *ichdev) 
+{
+	int idx;
+	u32 *bdbar = ichdev->bdbar;
+	unsigned long port = ichdev->reg_offset;
+
+	iputdword(chip, port + ICH_REG_OFF_BDBAR, ichdev->bdbar_addr);
+	if (ichdev->size == ichdev->fragsize) {
+		ichdev->ack_reload = ichdev->ack = 2;
+		ichdev->fragsize1 = ichdev->fragsize >> 1;
+		for (idx = 0; idx < (ICH_REG_LVI_MASK + 1) * 2; idx += 4) {
+			bdbar[idx + 0] = cpu_to_le32(ichdev->physbuf);
+			bdbar[idx + 1] = cpu_to_le32(0x80000000 | /* interrupt on completion */
+						     ichdev->fragsize1 >> chip->pcm_pos_shift);
+			bdbar[idx + 2] = cpu_to_le32(ichdev->physbuf + (ichdev->size >> 1));
+			bdbar[idx + 3] = cpu_to_le32(0x80000000 | /* interrupt on completion */
+						     ichdev->fragsize1 >> chip->pcm_pos_shift);
+		}
+		ichdev->frags = 2;
+	} else {
+		ichdev->ack_reload = ichdev->ack = 1;
+		ichdev->fragsize1 = ichdev->fragsize;
+		for (idx = 0; idx < (ICH_REG_LVI_MASK + 1) * 2; idx += 2) {
+			bdbar[idx + 0] = cpu_to_le32(ichdev->physbuf + (((idx >> 1) * ichdev->fragsize) % ichdev->size));
+			bdbar[idx + 1] = cpu_to_le32(0x80000000 | /* interrupt on completion */
+						     ichdev->fragsize >> chip->pcm_pos_shift);
+			// printk("bdbar[%i] = 0x%x [0x%x]\n", idx + 0, bdbar[idx + 0], bdbar[idx + 1]);
+		}
+		ichdev->frags = ichdev->size / ichdev->fragsize;
+	}
+	iputbyte(chip, port + ICH_REG_OFF_LVI, ichdev->lvi = ICH_REG_LVI_MASK);
+	ichdev->civ = 0;
+	iputbyte(chip, port + ICH_REG_OFF_CIV, 0);
+	ichdev->lvi_frag = ICH_REG_LVI_MASK % ichdev->frags;
+	ichdev->position = 0;
+#if 0
+	printk("lvi_frag = %i, frags = %i, period_size = 0x%x, period_size1 = 0x%x\n",
+			ichdev->lvi_frag, ichdev->frags, ichdev->fragsize, ichdev->fragsize1);
+#endif
+	/* clear interrupts */
+	iputbyte(chip, port + ichdev->roff_sr, ICH_FIFOE | ICH_BCIS | ICH_LVBCI);
+}
+
+/*
+ *  Interrupt handler
+ */
+
+static inline void snd_intel8x0_update(intel8x0_t *chip, ichdev_t *ichdev)
+{
+	unsigned long port = ichdev->reg_offset;
+	int civ, i, step;
+	int ack = 0;
+
+	civ = igetbyte(chip, port + ICH_REG_OFF_CIV);
+	if (civ == ichdev->civ) {
+		// snd_printd("civ same %d\n", civ);
+		step = 1;
+		ichdev->civ++;
+		ichdev->civ &= ICH_REG_LVI_MASK;
+	} else {
+		step = civ - ichdev->civ;
+		if (step < 0)
+			step += ICH_REG_LVI_MASK + 1;
+		// if (step != 1)
+		//	snd_printd("step = %d, %d -> %d\n", step, ichdev->civ, civ);
+		ichdev->civ = civ;
+	}
+
+	ichdev->position += step * ichdev->fragsize1;
+	ichdev->position %= ichdev->size;
+	ichdev->lvi += step;
+	ichdev->lvi &= ICH_REG_LVI_MASK;
+	iputbyte(chip, port + ICH_REG_OFF_LVI, ichdev->lvi);
+	for (i = 0; i < step; i++) {
+		ichdev->lvi_frag++;
+		ichdev->lvi_frag %= ichdev->frags;
+		ichdev->bdbar[ichdev->lvi * 2] = cpu_to_le32(ichdev->physbuf + ichdev->lvi_frag * ichdev->fragsize1);
+	// printk("new: bdbar[%i] = 0x%x [0x%x], prefetch = %i, all = 0x%x, 0x%x\n", ichdev->lvi * 2, ichdev->bdbar[ichdev->lvi * 2], ichdev->bdbar[ichdev->lvi * 2 + 1], inb(ICH_REG_OFF_PIV + port), inl(port + 4), inb(port + ICH_REG_OFF_CR));
+		if (--ichdev->ack == 0) {
+			ichdev->ack = ichdev->ack_reload;
+			ack = 1;
+		}
+	}
+	if (ack && ichdev->substream) {
+		spin_unlock(&chip->reg_lock);
+		snd_pcm_period_elapsed(ichdev->substream);
+		spin_lock(&chip->reg_lock);
+	}
+	iputbyte(chip, port + ichdev->roff_sr, ICH_FIFOE | ICH_BCIS | ICH_LVBCI);
+}
+
+static irqreturn_t snd_intel8x0_interrupt(int irq, void *dev_id, struct pt_regs *regs)
+{
+	intel8x0_t *chip = dev_id;
+	ichdev_t *ichdev;
+	unsigned int status;
+	unsigned int i;
+
+	spin_lock(&chip->reg_lock);
+	status = igetdword(chip, chip->int_sta_reg);
+	if (status == 0xffffffff) { /* we are not yet resumed */
+		spin_unlock(&chip->reg_lock);
+		return IRQ_NONE;
+	}
+	if ((status & chip->int_sta_mask) == 0) {
+		if (status)
+			iputdword(chip, chip->int_sta_reg, status);
+		spin_unlock(&chip->reg_lock);
+		return IRQ_NONE;
+	}
+
+	for (i = 0; i < chip->bdbars_count; i++) {
+		ichdev = &chip->ichd[i];
+		if (status & ichdev->int_sta_mask)
+			snd_intel8x0_update(chip, ichdev);
+	}
+
+	/* ack them */
+	iputdword(chip, chip->int_sta_reg, status & chip->int_sta_mask);
+	spin_unlock(&chip->reg_lock);
+	
+	return IRQ_HANDLED;
+}
+
+/*
+ *  PCM part
+ */
+
+static int snd_intel8x0_pcm_trigger(snd_pcm_substream_t *substream, int cmd)
+{
+	intel8x0_t *chip = snd_pcm_substream_chip(substream);
+	ichdev_t *ichdev = get_ichdev(substream);
+	unsigned char val = 0;
+	unsigned long port = ichdev->reg_offset;
+
+	switch (cmd) {
+	case SNDRV_PCM_TRIGGER_START:
+	case SNDRV_PCM_TRIGGER_RESUME:
+		val = ICH_IOCE | ICH_STARTBM;
+		break;
+	case SNDRV_PCM_TRIGGER_STOP:
+	case SNDRV_PCM_TRIGGER_SUSPEND:
+		val = 0;
+		break;
+	case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
+		val = ICH_IOCE;
+		break;
+	case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
+		val = ICH_IOCE | ICH_STARTBM;
+		break;
+	default:
+		return -EINVAL;
+	}
+	iputbyte(chip, port + ICH_REG_OFF_CR, val);
+	if (cmd == SNDRV_PCM_TRIGGER_STOP) {
+		/* wait until DMA stopped */
+		while (!(igetbyte(chip, port + ichdev->roff_sr) & ICH_DCH)) ;
+		/* reset whole DMA things */
+		iputbyte(chip, port + ICH_REG_OFF_CR, ICH_RESETREGS);
+	}
+	return 0;
+}
+
+static int snd_intel8x0_hw_params(snd_pcm_substream_t * substream,
+				  snd_pcm_hw_params_t * hw_params)
+{
+	return snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params));
+}
+
+static int snd_intel8x0_hw_free(snd_pcm_substream_t * substream)
+{
+	return snd_pcm_lib_free_pages(substream);
+}
+
+static snd_pcm_uframes_t snd_intel8x0_pcm_pointer(snd_pcm_substream_t * substream)
+{
+	intel8x0_t *chip = snd_pcm_substream_chip(substream);
+	ichdev_t *ichdev = get_ichdev(substream);
+	size_t ptr1, ptr;
+
+	ptr1 = igetword(chip, ichdev->reg_offset + ichdev->roff_picb) << chip->pcm_pos_shift;
+	if (ptr1 != 0)
+		ptr = ichdev->fragsize1 - ptr1;
+	else
+		ptr = 0;
+	ptr += ichdev->position;
+	if (ptr >= ichdev->size)
+		return 0;
+	return bytes_to_frames(substream->runtime, ptr);
+}
+
+static int snd_intel8x0m_pcm_trigger(snd_pcm_substream_t *substream, int cmd)
+{
+	/* hook off/on on start/stop */
+	/* Moved this to mixer control */
+	switch (cmd) {
+	case SNDRV_PCM_TRIGGER_START:
+		break;
+	case SNDRV_PCM_TRIGGER_STOP:
+		break;
+	default:
+		return -EINVAL;
+	}
+	return snd_intel8x0_pcm_trigger(substream,cmd);
+}
+
+static int snd_intel8x0m_pcm_prepare(snd_pcm_substream_t * substream)
+{
+	intel8x0_t *chip = snd_pcm_substream_chip(substream);
+	snd_pcm_runtime_t *runtime = substream->runtime;
+	ichdev_t *ichdev = get_ichdev(substream);
+
+	ichdev->physbuf = runtime->dma_addr;
+	ichdev->size = snd_pcm_lib_buffer_bytes(substream);
+	ichdev->fragsize = snd_pcm_lib_period_bytes(substream);
+	snd_ac97_write(ichdev->ac97, AC97_LINE1_RATE, runtime->rate);
+	snd_ac97_write(ichdev->ac97, AC97_LINE1_LEVEL, 0);
+	snd_intel8x0_setup_periods(chip, ichdev);
+	return 0;
+}
+
+static snd_pcm_hardware_t snd_intel8x0m_stream =
+{
+	.info =			(SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_INTERLEAVED |
+				 SNDRV_PCM_INFO_BLOCK_TRANSFER |
+				 SNDRV_PCM_INFO_MMAP_VALID |
+				 SNDRV_PCM_INFO_PAUSE |
+				 SNDRV_PCM_INFO_RESUME),
+	.formats =		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 =	64 * 1024,
+	.period_bytes_min =	32,
+	.period_bytes_max =	64 * 1024,
+	.periods_min =		1,
+	.periods_max =		1024,
+	.fifo_size =		0,
+};
+
+
+static int snd_intel8x0m_pcm_open(snd_pcm_substream_t * substream, ichdev_t *ichdev)
+{
+	static unsigned int rates[] = { 8000,  9600, 12000, 16000 };
+	static snd_pcm_hw_constraint_list_t hw_constraints_rates = {
+		.count = ARRAY_SIZE(rates),
+		.list = rates,
+		.mask = 0,
+	};
+	snd_pcm_runtime_t *runtime = substream->runtime;
+	int err;
+
+	ichdev->substream = substream;
+	runtime->hw = snd_intel8x0m_stream;
+	err = snd_pcm_hw_constraint_list(runtime, 0, SNDRV_PCM_HW_PARAM_RATE, &hw_constraints_rates);
+	if ( err < 0 )
+		return err;
+	runtime->private_data = ichdev;
+	return 0;
+}
+
+static int snd_intel8x0m_playback_open(snd_pcm_substream_t * substream)
+{
+	intel8x0_t *chip = snd_pcm_substream_chip(substream);
+
+	return snd_intel8x0m_pcm_open(substream, &chip->ichd[ICHD_MDMOUT]);
+}
+
+static int snd_intel8x0m_playback_close(snd_pcm_substream_t * substream)
+{
+	intel8x0_t *chip = snd_pcm_substream_chip(substream);
+
+	chip->ichd[ICHD_MDMOUT].substream = NULL;
+	return 0;
+}
+
+static int snd_intel8x0m_capture_open(snd_pcm_substream_t * substream)
+{
+	intel8x0_t *chip = snd_pcm_substream_chip(substream);
+
+	return snd_intel8x0m_pcm_open(substream, &chip->ichd[ICHD_MDMIN]);
+}
+
+static int snd_intel8x0m_capture_close(snd_pcm_substream_t * substream)
+{
+	intel8x0_t *chip = snd_pcm_substream_chip(substream);
+
+	chip->ichd[ICHD_MDMIN].substream = NULL;
+	return 0;
+}
+
+
+static snd_pcm_ops_t snd_intel8x0m_playback_ops = {
+	.open =		snd_intel8x0m_playback_open,
+	.close =	snd_intel8x0m_playback_close,
+	.ioctl =	snd_pcm_lib_ioctl,
+	.hw_params =	snd_intel8x0_hw_params,
+	.hw_free =	snd_intel8x0_hw_free,
+	.prepare =	snd_intel8x0m_pcm_prepare,
+	.trigger =	snd_intel8x0m_pcm_trigger,
+	.pointer =	snd_intel8x0_pcm_pointer,
+};
+
+static snd_pcm_ops_t snd_intel8x0m_capture_ops = {
+	.open =		snd_intel8x0m_capture_open,
+	.close =	snd_intel8x0m_capture_close,
+	.ioctl =	snd_pcm_lib_ioctl,
+	.hw_params =	snd_intel8x0_hw_params,
+	.hw_free =	snd_intel8x0_hw_free,
+	.prepare =	snd_intel8x0m_pcm_prepare,
+	.trigger =	snd_intel8x0m_pcm_trigger,
+	.pointer =	snd_intel8x0_pcm_pointer,
+};
+
+
+struct ich_pcm_table {
+	char *suffix;
+	snd_pcm_ops_t *playback_ops;
+	snd_pcm_ops_t *capture_ops;
+	size_t prealloc_size;
+	size_t prealloc_max_size;
+	int ac97_idx;
+};
+
+static int __devinit snd_intel8x0_pcm1(intel8x0_t *chip, int device, struct ich_pcm_table *rec)
+{
+	snd_pcm_t *pcm;
+	int err;
+	char name[32];
+
+	if (rec->suffix)
+		sprintf(name, "Intel ICH - %s", rec->suffix);
+	else
+		strcpy(name, "Intel ICH");
+	err = snd_pcm_new(chip->card, name, device,
+			  rec->playback_ops ? 1 : 0,
+			  rec->capture_ops ? 1 : 0, &pcm);
+	if (err < 0)
+		return err;
+
+	if (rec->playback_ops)
+		snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, rec->playback_ops);
+	if (rec->capture_ops)
+		snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, rec->capture_ops);
+
+	pcm->private_data = chip;
+	pcm->info_flags = 0;
+	if (rec->suffix)
+		sprintf(pcm->name, "%s - %s", chip->card->shortname, rec->suffix);
+	else
+		strcpy(pcm->name, chip->card->shortname);
+	chip->pcm[device] = pcm;
+
+	snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV,
+					      snd_dma_pci_data(chip->pci),
+					      rec->prealloc_size,
+					      rec->prealloc_max_size);
+
+	return 0;
+}
+
+static struct ich_pcm_table intel_pcms[] __devinitdata = {
+	{
+		.suffix = "Modem",
+		.playback_ops = &snd_intel8x0m_playback_ops,
+		.capture_ops = &snd_intel8x0m_capture_ops,
+		.prealloc_size = 32 * 1024,
+		.prealloc_max_size = 64 * 1024,
+	},
+};
+
+static int __devinit snd_intel8x0_pcm(intel8x0_t *chip)
+{
+	int i, tblsize, device, err;
+	struct ich_pcm_table *tbl, *rec;
+
+#if 1
+	tbl = intel_pcms;
+	tblsize = 1;
+#else
+	switch (chip->device_type) {
+	case DEVICE_NFORCE:
+		tbl = nforce_pcms;
+		tblsize = ARRAY_SIZE(nforce_pcms);
+		break;
+	case DEVICE_ALI:
+		tbl = ali_pcms;
+		tblsize = ARRAY_SIZE(ali_pcms);
+		break;
+	default:
+		tbl = intel_pcms;
+		tblsize = 2;
+		break;
+	}
+#endif
+	device = 0;
+	for (i = 0; i < tblsize; i++) {
+		rec = tbl + i;
+		if (i > 0 && rec->ac97_idx) {
+			/* activate PCM only when associated AC'97 codec */
+			if (! chip->ichd[rec->ac97_idx].ac97)
+				continue;
+		}
+		err = snd_intel8x0_pcm1(chip, device, rec);
+		if (err < 0)
+			return err;
+		device++;
+	}
+
+	chip->pcm_devs = device;
+	return 0;
+}
+	
+
+/*
+ *  Mixer part
+ */
+
+static void snd_intel8x0_mixer_free_ac97_bus(ac97_bus_t *bus)
+{
+	intel8x0_t *chip = bus->private_data;
+	chip->ac97_bus = NULL;
+}
+
+static void snd_intel8x0_mixer_free_ac97(ac97_t *ac97)
+{
+	intel8x0_t *chip = ac97->private_data;
+	chip->ac97 = NULL;
+}
+
+
+static int __devinit snd_intel8x0_mixer(intel8x0_t *chip, int ac97_clock)
+{
+	ac97_bus_t *pbus;
+	ac97_template_t ac97;
+	ac97_t *x97;
+	int err;
+	unsigned int glob_sta = 0;
+	unsigned int idx;
+	static ac97_bus_ops_t ops = {
+		.write = snd_intel8x0_codec_write,
+		.read = snd_intel8x0_codec_read,
+	};
+
+	chip->in_ac97_init = 1;
+	
+	memset(&ac97, 0, sizeof(ac97));
+	ac97.private_data = chip;
+	ac97.private_free = snd_intel8x0_mixer_free_ac97;
+	ac97.scaps = AC97_SCAP_SKIP_AUDIO;
+
+	glob_sta = igetdword(chip, ICHREG(GLOB_STA));
+
+	if ((err = snd_ac97_bus(chip->card, 0, &ops, chip, &pbus)) < 0)
+		goto __err;
+	pbus->private_free = snd_intel8x0_mixer_free_ac97_bus;
+	pbus->shared_type = AC97_SHARED_TYPE_ICH;	/* shared with audio driver */
+	if (ac97_clock >= 8000 && ac97_clock <= 48000)
+		pbus->clock = ac97_clock;
+	chip->ac97_bus = pbus;
+
+	ac97.pci = chip->pci;
+	ac97.num = glob_sta & ICH_SCR ? 1 : 0;
+	if ((err = snd_ac97_mixer(pbus, &ac97, &x97)) < 0) {
+		snd_printk(KERN_ERR "Unable to initialize codec #%d\n", ac97.num);
+		if (ac97.num == 0)
+			goto __err;
+		return err;
+	}
+	chip->ac97 = x97;
+	if(ac97_is_modem(x97) && !chip->ichd[ICHD_MDMIN].ac97) {
+		chip->ichd[ICHD_MDMIN].ac97 = x97;
+		chip->ichd[ICHD_MDMOUT].ac97 = x97;
+	}
+	for (idx = 0; idx < ARRAY_SIZE(snd_intel8x0m_mixer_switches); idx++) {
+		if ((err = snd_ctl_add(chip->card, snd_ctl_new1(&snd_intel8x0m_mixer_switches[idx], chip))) < 0)
+			goto __err;
+	}
+
+	chip->in_ac97_init = 0;
+	return 0;
+
+ __err:
+	/* clear the cold-reset bit for the next chance */
+	if (chip->device_type != DEVICE_ALI)
+		iputdword(chip, ICHREG(GLOB_CNT), igetdword(chip, ICHREG(GLOB_CNT)) & ~ICH_AC97COLD);
+	return err;
+}
+
+
+/*
+ *
+ */
+
+#define do_delay(chip) do {\
+	set_current_state(TASK_UNINTERRUPTIBLE);\
+	schedule_timeout(1);\
+} while (0)
+
+static int snd_intel8x0m_ich_chip_init(intel8x0_t *chip, int probing)
+{
+	unsigned long end_time;
+	unsigned int cnt, status, nstatus;
+	
+	/* put logic to right state */
+	/* first clear status bits */
+	status = ICH_RCS | ICH_MIINT | ICH_MOINT;
+	cnt = igetdword(chip, ICHREG(GLOB_STA));
+	iputdword(chip, ICHREG(GLOB_STA), cnt & status);
+
+	/* ACLink on, 2 channels */
+	cnt = igetdword(chip, ICHREG(GLOB_CNT));
+	cnt &= ~(ICH_ACLINK);
+	/* finish cold or do warm reset */
+	cnt |= (cnt & ICH_AC97COLD) == 0 ? ICH_AC97COLD : ICH_AC97WARM;
+	iputdword(chip, ICHREG(GLOB_CNT), cnt);
+	end_time = (jiffies + (HZ / 4)) + 1;
+	do {
+		if ((igetdword(chip, ICHREG(GLOB_CNT)) & ICH_AC97WARM) == 0)
+			goto __ok;
+		do_delay(chip);
+	} while (time_after_eq(end_time, jiffies));
+	snd_printk("AC'97 warm reset still in progress? [0x%x]\n", igetdword(chip, ICHREG(GLOB_CNT)));
+	return -EIO;
+
+      __ok:
+	if (probing) {
+		/* wait for any codec ready status.
+		 * Once it becomes ready it should remain ready
+		 * as long as we do not disable the ac97 link.
+		 */
+		end_time = jiffies + HZ;
+		do {
+			status = igetdword(chip, ICHREG(GLOB_STA)) & (ICH_PCR | ICH_SCR | ICH_TCR);
+			if (status)
+				break;
+			do_delay(chip);
+		} while (time_after_eq(end_time, jiffies));
+		if (! status) {
+			/* no codec is found */
+			snd_printk(KERN_ERR "codec_ready: codec is not ready [0x%x]\n", igetdword(chip, ICHREG(GLOB_STA)));
+			return -EIO;
+		}
+
+		/* up to two codecs (modem cannot be tertiary with ICH4) */
+		nstatus = ICH_PCR | ICH_SCR;
+
+		/* wait for other codecs ready status. */
+		end_time = jiffies + HZ / 4;
+		while (status != nstatus && time_after_eq(end_time, jiffies)) {
+			do_delay(chip);
+			status |= igetdword(chip, ICHREG(GLOB_STA)) & nstatus;
+		}
+
+	} else {
+		/* resume phase */
+		status = 0;
+		if (chip->ac97)
+			status |= get_ich_codec_bit(chip, chip->ac97->num);
+		/* wait until all the probed codecs are ready */
+		end_time = jiffies + HZ;
+		do {
+			nstatus = igetdword(chip, ICHREG(GLOB_STA)) & (ICH_PCR | ICH_SCR | ICH_TCR);
+			if (status == nstatus)
+				break;
+			do_delay(chip);
+		} while (time_after_eq(end_time, jiffies));
+	}
+
+	if (chip->device_type == DEVICE_SIS) {
+		/* unmute the output on SIS7012 */
+		iputword(chip, 0x4c, igetword(chip, 0x4c) | 1);
+	}
+
+      	return 0;
+}
+
+static int snd_intel8x0_chip_init(intel8x0_t *chip, int probing)
+{
+	unsigned int i;
+	int err;
+	
+	if ((err = snd_intel8x0m_ich_chip_init(chip, probing)) < 0)
+		return err;
+	iagetword(chip, 0);	/* clear semaphore flag */
+
+	/* disable interrupts */
+	for (i = 0; i < chip->bdbars_count; i++)
+		iputbyte(chip, ICH_REG_OFF_CR + chip->ichd[i].reg_offset, 0x00);
+	/* reset channels */
+	for (i = 0; i < chip->bdbars_count; i++)
+		iputbyte(chip, ICH_REG_OFF_CR + chip->ichd[i].reg_offset, ICH_RESETREGS);
+	/* initialize Buffer Descriptor Lists */
+	for (i = 0; i < chip->bdbars_count; i++)
+		iputdword(chip, ICH_REG_OFF_BDBAR + chip->ichd[i].reg_offset, chip->ichd[i].bdbar_addr);
+	return 0;
+}
+
+static int snd_intel8x0_free(intel8x0_t *chip)
+{
+	unsigned int i;
+
+	if (chip->irq < 0)
+		goto __hw_end;
+	/* disable interrupts */
+	for (i = 0; i < chip->bdbars_count; i++)
+		iputbyte(chip, ICH_REG_OFF_CR + chip->ichd[i].reg_offset, 0x00);
+	/* reset channels */
+	for (i = 0; i < chip->bdbars_count; i++)
+		iputbyte(chip, ICH_REG_OFF_CR + chip->ichd[i].reg_offset, ICH_RESETREGS);
+	/* --- */
+	synchronize_irq(chip->irq);
+      __hw_end:
+	if (chip->bdbars.area)
+		snd_dma_free_pages(&chip->bdbars);
+	if (chip->remap_addr)
+		iounmap(chip->remap_addr);
+	if (chip->remap_bmaddr)
+		iounmap(chip->remap_bmaddr);
+	if (chip->irq >= 0)
+		free_irq(chip->irq, (void *)chip);
+	pci_release_regions(chip->pci);
+	pci_disable_device(chip->pci);
+	kfree(chip);
+	return 0;
+}
+
+#ifdef CONFIG_PM
+/*
+ * power management
+ */
+static int intel8x0m_suspend(snd_card_t *card, pm_message_t state)
+{
+	intel8x0_t *chip = card->pm_private_data;
+	int i;
+
+	for (i = 0; i < chip->pcm_devs; i++)
+		snd_pcm_suspend_all(chip->pcm[i]);
+	if (chip->ac97)
+		snd_ac97_suspend(chip->ac97);
+	pci_disable_device(chip->pci);
+	return 0;
+}
+
+static int intel8x0m_resume(snd_card_t *card)
+{
+	intel8x0_t *chip = card->pm_private_data;
+	pci_enable_device(chip->pci);
+	pci_set_master(chip->pci);
+	snd_intel8x0_chip_init(chip, 0);
+	if (chip->ac97)
+		snd_ac97_resume(chip->ac97);
+
+	return 0;
+}
+#endif /* CONFIG_PM */
+
+static void snd_intel8x0m_proc_read(snd_info_entry_t * entry,
+				   snd_info_buffer_t * buffer)
+{
+	intel8x0_t *chip = entry->private_data;
+	unsigned int tmp;
+
+	snd_iprintf(buffer, "Intel8x0m\n\n");
+	if (chip->device_type == DEVICE_ALI)
+		return;
+	tmp = igetdword(chip, ICHREG(GLOB_STA));
+	snd_iprintf(buffer, "Global control        : 0x%08x\n", igetdword(chip, ICHREG(GLOB_CNT)));
+	snd_iprintf(buffer, "Global status         : 0x%08x\n", tmp);
+	snd_iprintf(buffer, "AC'97 codecs ready    :%s%s%s%s\n",
+			tmp & ICH_PCR ? " primary" : "",
+			tmp & ICH_SCR ? " secondary" : "",
+			tmp & ICH_TCR ? " tertiary" : "",
+			(tmp & (ICH_PCR | ICH_SCR | ICH_TCR)) == 0 ? " none" : "");
+}
+
+static void __devinit snd_intel8x0m_proc_init(intel8x0_t * chip)
+{
+	snd_info_entry_t *entry;
+
+	if (! snd_card_proc_new(chip->card, "intel8x0m", &entry))
+		snd_info_set_text_ops(entry, chip, 1024, snd_intel8x0m_proc_read);
+}
+
+static int snd_intel8x0_dev_free(snd_device_t *device)
+{
+	intel8x0_t *chip = device->device_data;
+	return snd_intel8x0_free(chip);
+}
+
+struct ich_reg_info {
+	unsigned int int_sta_mask;
+	unsigned int offset;
+};
+
+static int __devinit snd_intel8x0m_create(snd_card_t * card,
+					 struct pci_dev *pci,
+					 unsigned long device_type,
+					 intel8x0_t ** r_intel8x0)
+{
+	intel8x0_t *chip;
+	int err;
+	unsigned int i;
+	unsigned int int_sta_masks;
+	ichdev_t *ichdev;
+	static snd_device_ops_t ops = {
+		.dev_free =	snd_intel8x0_dev_free,
+	};
+	static struct ich_reg_info intel_regs[2] = {
+		{ ICH_MIINT, 0 },
+		{ ICH_MOINT, 0x10 },
+	};
+	struct ich_reg_info *tbl;
+
+	*r_intel8x0 = NULL;
+
+	if ((err = pci_enable_device(pci)) < 0)
+		return err;
+
+	chip = kcalloc(1, sizeof(*chip), GFP_KERNEL);
+	if (chip == NULL) {
+		pci_disable_device(pci);
+		return -ENOMEM;
+	}
+	spin_lock_init(&chip->reg_lock);
+	chip->device_type = device_type;
+	chip->card = card;
+	chip->pci = pci;
+	chip->irq = -1;
+
+	if ((err = pci_request_regions(pci, card->shortname)) < 0) {
+		kfree(chip);
+		pci_disable_device(pci);
+		return err;
+	}
+
+	if (device_type == DEVICE_ALI) {
+		/* ALI5455 has no ac97 region */
+		chip->bmaddr = pci_resource_start(pci, 0);
+		goto port_inited;
+	}
+
+	if (pci_resource_flags(pci, 2) & IORESOURCE_MEM) {	/* ICH4 and Nforce */
+		chip->mmio = 1;
+		chip->addr = pci_resource_start(pci, 2);
+		chip->remap_addr = ioremap_nocache(chip->addr,
+						   pci_resource_len(pci, 2));
+		if (chip->remap_addr == NULL) {
+			snd_printk("AC'97 space ioremap problem\n");
+			snd_intel8x0_free(chip);
+			return -EIO;
+		}
+	} else {
+		chip->addr = pci_resource_start(pci, 0);
+	}
+	if (pci_resource_flags(pci, 3) & IORESOURCE_MEM) {	/* ICH4 */
+		chip->bm_mmio = 1;
+		chip->bmaddr = pci_resource_start(pci, 3);
+		chip->remap_bmaddr = ioremap_nocache(chip->bmaddr,
+						     pci_resource_len(pci, 3));
+		if (chip->remap_bmaddr == NULL) {
+			snd_printk("Controller space ioremap problem\n");
+			snd_intel8x0_free(chip);
+			return -EIO;
+		}
+	} else {
+		chip->bmaddr = pci_resource_start(pci, 1);
+	}
+
+ port_inited:
+	if (request_irq(pci->irq, snd_intel8x0_interrupt, SA_INTERRUPT|SA_SHIRQ, card->shortname, (void *)chip)) {
+		snd_printk("unable to grab IRQ %d\n", pci->irq);
+		snd_intel8x0_free(chip);
+		return -EBUSY;
+	}
+	chip->irq = pci->irq;
+	pci_set_master(pci);
+	synchronize_irq(chip->irq);
+
+	/* initialize offsets */
+	chip->bdbars_count = 2;
+	tbl = intel_regs;
+
+	for (i = 0; i < chip->bdbars_count; i++) {
+		ichdev = &chip->ichd[i];
+		ichdev->ichd = i;
+		ichdev->reg_offset = tbl[i].offset;
+		ichdev->int_sta_mask = tbl[i].int_sta_mask;
+		if (device_type == DEVICE_SIS) {
+			/* SiS 7013 swaps the registers */
+			ichdev->roff_sr = ICH_REG_OFF_PICB;
+			ichdev->roff_picb = ICH_REG_OFF_SR;
+		} else {
+			ichdev->roff_sr = ICH_REG_OFF_SR;
+			ichdev->roff_picb = ICH_REG_OFF_PICB;
+		}
+		if (device_type == DEVICE_ALI)
+			ichdev->ali_slot = (ichdev->reg_offset - 0x40) / 0x10;
+	}
+	/* SIS7013 handles the pcm data in bytes, others are in words */
+	chip->pcm_pos_shift = (device_type == DEVICE_SIS) ? 0 : 1;
+
+	/* allocate buffer descriptor lists */
+	/* the start of each lists must be aligned to 8 bytes */
+	if (snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV, snd_dma_pci_data(pci),
+				chip->bdbars_count * sizeof(u32) * ICH_MAX_FRAGS * 2,
+				&chip->bdbars) < 0) {
+		snd_intel8x0_free(chip);
+		return -ENOMEM;
+	}
+	/* tables must be aligned to 8 bytes here, but the kernel pages
+	   are much bigger, so we don't care (on i386) */
+	int_sta_masks = 0;
+	for (i = 0; i < chip->bdbars_count; i++) {
+		ichdev = &chip->ichd[i];
+		ichdev->bdbar = ((u32 *)chip->bdbars.area) + (i * ICH_MAX_FRAGS * 2);
+		ichdev->bdbar_addr = chip->bdbars.addr + (i * sizeof(u32) * ICH_MAX_FRAGS * 2);
+		int_sta_masks |= ichdev->int_sta_mask;
+	}
+	chip->int_sta_reg = ICH_REG_GLOB_STA;
+	chip->int_sta_mask = int_sta_masks;
+
+	if ((err = snd_intel8x0_chip_init(chip, 1)) < 0) {
+		snd_intel8x0_free(chip);
+		return err;
+	}
+
+	snd_card_set_pm_callback(card, intel8x0m_suspend, intel8x0m_resume, chip);
+
+	if ((err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops)) < 0) {
+		snd_intel8x0_free(chip);
+		return err;
+	}
+
+	snd_card_set_dev(card, &pci->dev);
+
+	*r_intel8x0 = chip;
+	return 0;
+}
+
+static struct shortname_table {
+	unsigned int id;
+	const char *s;
+} shortnames[] __devinitdata = {
+	{ PCI_DEVICE_ID_INTEL_82801_6, "Intel 82801AA-ICH" },
+	{ PCI_DEVICE_ID_INTEL_82901_6, "Intel 82901AB-ICH0" },
+	{ PCI_DEVICE_ID_INTEL_82801BA_6, "Intel 82801BA-ICH2" },
+	{ PCI_DEVICE_ID_INTEL_440MX_6, "Intel 440MX" },
+	{ PCI_DEVICE_ID_INTEL_ICH3_6, "Intel 82801CA-ICH3" },
+	{ PCI_DEVICE_ID_INTEL_ICH4_6, "Intel 82801DB-ICH4" },
+	{ PCI_DEVICE_ID_INTEL_ICH5_6, "Intel ICH5" },
+	{ PCI_DEVICE_ID_INTEL_ICH6_6, "Intel ICH6" },
+	{ PCI_DEVICE_ID_INTEL_ICH7_6, "Intel ICH7" },
+	{ 0x7446, "AMD AMD768" },
+	{ PCI_DEVICE_ID_SI_7013, "SiS SI7013" },
+	{ PCI_DEVICE_ID_NVIDIA_MCP_MODEM, "NVidia nForce" },
+	{ PCI_DEVICE_ID_NVIDIA_MCP2_MODEM, "NVidia nForce2" },
+	{ PCI_DEVICE_ID_NVIDIA_MCP2S_MODEM, "NVidia nForce2s" },
+	{ PCI_DEVICE_ID_NVIDIA_MCP3_MODEM, "NVidia nForce3" },
+#if 0
+	{ 0x5455, "ALi M5455" },
+	{ 0x746d, "AMD AMD8111" },
+#endif
+	{ 0 },
+};
+
+static int __devinit snd_intel8x0m_probe(struct pci_dev *pci,
+					const struct pci_device_id *pci_id)
+{
+	static int dev;
+	snd_card_t *card;
+	intel8x0_t *chip;
+	int err;
+	struct shortname_table *name;
+
+	if (dev >= SNDRV_CARDS)
+		return -ENODEV;
+	if (!enable[dev]) {
+		dev++;
+		return -ENOENT;
+	}
+
+	card = snd_card_new(index[dev], id[dev], THIS_MODULE, 0);
+	if (card == NULL)
+		return -ENOMEM;
+
+	strcpy(card->driver, "ICH-MODEM");
+	strcpy(card->shortname, "Intel ICH");
+	for (name = shortnames; name->id; name++) {
+		if (pci->device == name->id) {
+			strcpy(card->shortname, name->s);
+			break;
+		}
+	}
+	strcat(card->shortname," Modem");
+
+	if ((err = snd_intel8x0m_create(card, pci, pci_id->driver_data, &chip)) < 0) {
+		snd_card_free(card);
+		return err;
+	}
+
+	if ((err = snd_intel8x0_mixer(chip, ac97_clock[dev])) < 0) {
+		snd_card_free(card);
+		return err;
+	}
+	if ((err = snd_intel8x0_pcm(chip)) < 0) {
+		snd_card_free(card);
+		return err;
+	}
+	
+	snd_intel8x0m_proc_init(chip);
+
+	sprintf(card->longname, "%s at 0x%lx, irq %i",
+		card->shortname, chip->addr, chip->irq);
+
+	if ((err = snd_card_register(card)) < 0) {
+		snd_card_free(card);
+		return err;
+	}
+	pci_set_drvdata(pci, card);
+	dev++;
+	return 0;
+}
+
+static void __devexit snd_intel8x0m_remove(struct pci_dev *pci)
+{
+	snd_card_free(pci_get_drvdata(pci));
+	pci_set_drvdata(pci, NULL);
+}
+
+static struct pci_driver driver = {
+	.name = "Intel ICH Modem",
+	.id_table = snd_intel8x0m_ids,
+	.probe = snd_intel8x0m_probe,
+	.remove = __devexit_p(snd_intel8x0m_remove),
+	SND_PCI_PM_CALLBACKS
+};
+
+
+static int __init alsa_card_intel8x0m_init(void)
+{
+	return pci_module_init(&driver);
+}
+
+static void __exit alsa_card_intel8x0m_exit(void)
+{
+	pci_unregister_driver(&driver);
+}
+
+module_init(alsa_card_intel8x0m_init)
+module_exit(alsa_card_intel8x0m_exit)