ALSA: hda: Use LPIB for another mainboard
[safe/jmp/linux-2.6] / sound / pci / hda / hda_intel.c
index 38c5916..1640005 100644 (file)
  * 
  */
 
-#include <sound/driver.h>
 #include <asm/io.h>
 #include <linux/delay.h>
 #include <linux/interrupt.h>
 #include <linux/kernel.h>
 #include <linux/module.h>
+#include <linux/dma-mapping.h>
 #include <linux/moduleparam.h>
 #include <linux/init.h>
 #include <linux/slab.h>
 #include <linux/pci.h>
 #include <linux/mutex.h>
+#include <linux/reboot.h>
 #include <sound/core.h>
 #include <sound/initval.h>
 #include "hda_codec.h"
 
 
-static int index = SNDRV_DEFAULT_IDX1;
-static char *id = SNDRV_DEFAULT_STR1;
-static char *model;
-static int position_fix;
-static int probe_mask = -1;
+static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;
+static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;
+static int enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP;
+static char *model[SNDRV_CARDS];
+static int position_fix[SNDRV_CARDS];
+static int bdl_pos_adj[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS-1)] = -1};
+static int probe_mask[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS-1)] = -1};
+static int probe_only[SNDRV_CARDS];
 static int single_cmd;
-static int enable_msi;
+static int enable_msi = -1;
+#ifdef CONFIG_SND_HDA_PATCH_LOADER
+static char *patch[SNDRV_CARDS];
+#endif
+#ifdef CONFIG_SND_HDA_INPUT_BEEP
+static int beep_mode[SNDRV_CARDS] = {[0 ... (SNDRV_CARDS-1)] =
+                                       CONFIG_SND_HDA_INPUT_BEEP_MODE};
+#endif
 
-module_param(index, int, 0444);
+module_param_array(index, int, NULL, 0444);
 MODULE_PARM_DESC(index, "Index value for Intel HD audio interface.");
-module_param(id, charp, 0444);
+module_param_array(id, charp, NULL, 0444);
 MODULE_PARM_DESC(id, "ID string for Intel HD audio interface.");
-module_param(model, charp, 0444);
+module_param_array(enable, bool, NULL, 0444);
+MODULE_PARM_DESC(enable, "Enable Intel HD audio interface.");
+module_param_array(model, charp, NULL, 0444);
 MODULE_PARM_DESC(model, "Use the given board model.");
-module_param(position_fix, int, 0444);
+module_param_array(position_fix, int, NULL, 0444);
 MODULE_PARM_DESC(position_fix, "Fix DMA pointer "
-                "(0 = auto, 1 = none, 2 = POSBUF, 3 = FIFO size).");
-module_param(probe_mask, int, 0444);
+                "(0 = auto, 1 = none, 2 = POSBUF).");
+module_param_array(bdl_pos_adj, int, NULL, 0644);
+MODULE_PARM_DESC(bdl_pos_adj, "BDL position adjustment offset.");
+module_param_array(probe_mask, int, NULL, 0444);
 MODULE_PARM_DESC(probe_mask, "Bitmask to probe codecs (default = -1).");
+module_param_array(probe_only, int, NULL, 0444);
+MODULE_PARM_DESC(probe_only, "Only probing and no codec initialization.");
 module_param(single_cmd, bool, 0444);
 MODULE_PARM_DESC(single_cmd, "Use single command to communicate with codecs "
                 "(for debugging only).");
-module_param(enable_msi, int, 0);
+module_param(enable_msi, int, 0444);
 MODULE_PARM_DESC(enable_msi, "Enable Message Signaled Interrupt (MSI)");
+#ifdef CONFIG_SND_HDA_PATCH_LOADER
+module_param_array(patch, charp, NULL, 0444);
+MODULE_PARM_DESC(patch, "Patch file for Intel HD audio interface.");
+#endif
+#ifdef CONFIG_SND_HDA_INPUT_BEEP
+module_param_array(beep_mode, int, NULL, 0444);
+MODULE_PARM_DESC(beep_mode, "Select HDA Beep registration mode "
+                           "(0=off, 1=on, 2=mute switch on/off) (default=1).");
+#endif
 
 #ifdef CONFIG_SND_HDA_POWER_SAVE
-/* power_save option is defined in hda_codec.c */
+static int power_save = CONFIG_SND_HDA_POWER_SAVE_DEFAULT;
+module_param(power_save, int, 0644);
+MODULE_PARM_DESC(power_save, "Automatic power-saving timeout "
+                "(in second, 0 = disable).");
 
 /* reset the HD-audio controller in power save mode.
  * this may give more power-saving, but will take longer time to
@@ -87,10 +116,6 @@ module_param(power_save_controller, bool, 0644);
 MODULE_PARM_DESC(power_save_controller, "Reset controller in power save mode.");
 #endif
 
-/* just for backward compatibility */
-static int enable;
-module_param(enable, bool, 0444);
-
 MODULE_LICENSE("GPL");
 MODULE_SUPPORTED_DEVICE("{{Intel, ICH6},"
                         "{Intel, ICH6M},"
@@ -98,6 +123,10 @@ MODULE_SUPPORTED_DEVICE("{{Intel, ICH6},"
                         "{Intel, ESB2},"
                         "{Intel, ICH8},"
                         "{Intel, ICH9},"
+                        "{Intel, ICH10},"
+                        "{Intel, PCH},"
+                        "{Intel, CPT},"
+                        "{Intel, SCH},"
                         "{ATI, SB450},"
                         "{ATI, SB600},"
                         "{ATI, RS600},"
@@ -116,39 +145,61 @@ MODULE_SUPPORTED_DEVICE("{{Intel, ICH6},"
                         "{ULI, M5461}}");
 MODULE_DESCRIPTION("Intel HDA driver");
 
+#ifdef CONFIG_SND_VERBOSE_PRINTK
+#define SFX    /* nop */
+#else
 #define SFX    "hda-intel: "
-
+#endif
 
 /*
  * registers
  */
 #define ICH6_REG_GCAP                  0x00
+#define   ICH6_GCAP_64OK       (1 << 0)   /* 64bit address support */
+#define   ICH6_GCAP_NSDO       (3 << 1)   /* # of serial data out signals */
+#define   ICH6_GCAP_BSS                (31 << 3)  /* # of bidirectional streams */
+#define   ICH6_GCAP_ISS                (15 << 8)  /* # of input streams */
+#define   ICH6_GCAP_OSS                (15 << 12) /* # of output streams */
 #define ICH6_REG_VMIN                  0x02
 #define ICH6_REG_VMAJ                  0x03
 #define ICH6_REG_OUTPAY                        0x04
 #define ICH6_REG_INPAY                 0x06
 #define ICH6_REG_GCTL                  0x08
+#define   ICH6_GCTL_RESET      (1 << 0)   /* controller reset */
+#define   ICH6_GCTL_FCNTRL     (1 << 1)   /* flush control */
+#define   ICH6_GCTL_UNSOL      (1 << 8)   /* accept unsol. response enable */
 #define ICH6_REG_WAKEEN                        0x0c
 #define ICH6_REG_STATESTS              0x0e
 #define ICH6_REG_GSTS                  0x10
+#define   ICH6_GSTS_FSTS       (1 << 1)   /* flush status */
 #define ICH6_REG_INTCTL                        0x20
 #define ICH6_REG_INTSTS                        0x24
-#define ICH6_REG_WALCLK                        0x30
+#define ICH6_REG_WALLCLK               0x30    /* 24Mhz source */
 #define ICH6_REG_SYNC                  0x34    
 #define ICH6_REG_CORBLBASE             0x40
 #define ICH6_REG_CORBUBASE             0x44
 #define ICH6_REG_CORBWP                        0x48
-#define ICH6_REG_CORBRP                        0x4A
+#define ICH6_REG_CORBRP                        0x4a
+#define   ICH6_CORBRP_RST      (1 << 15)  /* read pointer reset */
 #define ICH6_REG_CORBCTL               0x4c
+#define   ICH6_CORBCTL_RUN     (1 << 1)   /* enable DMA */
+#define   ICH6_CORBCTL_CMEIE   (1 << 0)   /* enable memory error irq */
 #define ICH6_REG_CORBSTS               0x4d
+#define   ICH6_CORBSTS_CMEI    (1 << 0)   /* memory error indication */
 #define ICH6_REG_CORBSIZE              0x4e
 
 #define ICH6_REG_RIRBLBASE             0x50
 #define ICH6_REG_RIRBUBASE             0x54
 #define ICH6_REG_RIRBWP                        0x58
+#define   ICH6_RIRBWP_RST      (1 << 15)  /* write pointer reset */
 #define ICH6_REG_RINTCNT               0x5a
 #define ICH6_REG_RIRBCTL               0x5c
+#define   ICH6_RBCTL_IRQ_EN    (1 << 0)   /* enable IRQ */
+#define   ICH6_RBCTL_DMA_EN    (1 << 1)   /* enable DMA */
+#define   ICH6_RBCTL_OVERRUN_EN        (1 << 2)   /* enable overrun irq */
 #define ICH6_REG_RIRBSTS               0x5d
+#define   ICH6_RBSTS_IRQ       (1 << 0)   /* response irq */
+#define   ICH6_RBSTS_OVERRUN   (1 << 2)   /* overrun irq */
 #define ICH6_REG_RIRBSIZE              0x5e
 
 #define ICH6_REG_IC                    0x60
@@ -185,48 +236,47 @@ enum { SDI0, SDI1, SDI2, SDI3, SDO0, SDO1, SDO2, SDO3 };
 
 /* max number of SDs */
 /* ICH, ATI and VIA have 4 playback and 4 capture */
-#define ICH6_CAPTURE_INDEX     0
 #define ICH6_NUM_CAPTURE       4
-#define ICH6_PLAYBACK_INDEX    4
 #define ICH6_NUM_PLAYBACK      4
 
 /* ULI has 6 playback and 5 capture */
-#define ULI_CAPTURE_INDEX      0
 #define ULI_NUM_CAPTURE                5
-#define ULI_PLAYBACK_INDEX     5
 #define ULI_NUM_PLAYBACK       6
 
 /* ATI HDMI has 1 playback and 0 capture */
-#define ATIHDMI_CAPTURE_INDEX  0
 #define ATIHDMI_NUM_CAPTURE    0
-#define ATIHDMI_PLAYBACK_INDEX 0
 #define ATIHDMI_NUM_PLAYBACK   1
 
+/* TERA has 4 playback and 3 capture */
+#define TERA_NUM_CAPTURE       3
+#define TERA_NUM_PLAYBACK      4
+
 /* this number is statically defined for simplicity */
 #define MAX_AZX_DEV            16
 
 /* max number of fragments - we may use more if allocating more pages for BDL */
-#define BDL_SIZE               PAGE_ALIGN(8192)
-#define AZX_MAX_FRAG           (BDL_SIZE / (MAX_AZX_DEV * 16))
+#define BDL_SIZE               4096
+#define AZX_MAX_BDL_ENTRIES    (BDL_SIZE / 16)
+#define AZX_MAX_FRAG           32
 /* max buffer size - no h/w limit, you can increase as you like */
 #define AZX_MAX_BUF_SIZE       (1024*1024*1024)
-/* max number of PCM devics per card */
-#define AZX_MAX_AUDIO_PCMS     6
-#define AZX_MAX_MODEM_PCMS     2
-#define AZX_MAX_PCMS           (AZX_MAX_AUDIO_PCMS + AZX_MAX_MODEM_PCMS)
 
 /* RIRB int mask: overrun[2], response[0] */
 #define RIRB_INT_RESPONSE      0x01
 #define RIRB_INT_OVERRUN       0x04
 #define RIRB_INT_MASK          0x05
 
-/* STATESTS int mask: SD2,SD1,SD0 */
-#define AZX_MAX_CODECS         3
-#define STATESTS_INT_MASK      0x07
+/* STATESTS int mask: S3,SD2,SD1,SD0 */
+#define AZX_MAX_CODECS         8
+#define AZX_DEFAULT_CODECS     4
+#define STATESTS_INT_MASK      ((1 << AZX_MAX_CODECS) - 1)
 
 /* SD_CTL bits */
 #define SD_CTL_STREAM_RESET    0x01    /* stream reset bit */
 #define SD_CTL_DMA_START       0x02    /* stream DMA start bit */
+#define SD_CTL_STRIPE          (3 << 16)       /* stripe control */
+#define SD_CTL_TRAFFIC_PRIO    (1 << 18)       /* traffic priority */
+#define SD_CTL_DIR             (1 << 19)       /* bi-directional stream */
 #define SD_CTL_STREAM_TAG_MASK (0xf << 20)
 #define SD_CTL_STREAM_TAG_SHIFT        20
 
@@ -245,16 +295,6 @@ enum { SDI0, SDI1, SDI2, SDI3, SDO0, SDO1, SDO2, SDO3 };
 #define ICH6_INT_CTRL_EN       0x40000000 /* controller interrupt enable bit */
 #define ICH6_INT_GLOBAL_EN     0x80000000 /* global interrupt enable bit */
 
-/* GCTL unsolicited response enable bit */
-#define ICH6_GCTL_UREN         (1<<8)
-
-/* GCTL reset bit */
-#define ICH6_GCTL_RESET                (1<<0)
-
-/* CORB/RIRB control, read/write pointer */
-#define ICH6_RBCTL_DMA_EN      0x02    /* enable DMA */
-#define ICH6_RBCTL_IRQ_EN      0x01    /* enable IRQ */
-#define ICH6_RBRWP_CLR         0x8000  /* read/write pointer clear */
 /* below are so far hardcoded - should read registers in future */
 #define ICH6_MAX_CORB_ENTRIES  256
 #define ICH6_MAX_RIRB_ENTRIES  256
@@ -262,9 +302,8 @@ enum { SDI0, SDI1, SDI2, SDI3, SDO0, SDO1, SDO2, SDO3 };
 /* position fix mode */
 enum {
        POS_FIX_AUTO,
-       POS_FIX_NONE,
+       POS_FIX_LPIB,
        POS_FIX_POSBUF,
-       POS_FIX_FIFO,
 };
 
 /* Defines for ATI HD Audio support in SB450 south bridge */
@@ -274,19 +313,35 @@ enum {
 /* Defines for Nvidia HDA support */
 #define NVIDIA_HDA_TRANSREG_ADDR      0x4e
 #define NVIDIA_HDA_ENABLE_COHBITS     0x0f
+#define NVIDIA_HDA_ISTRM_COH          0x4d
+#define NVIDIA_HDA_OSTRM_COH          0x4c
+#define NVIDIA_HDA_ENABLE_COHBIT      0x01
+
+/* Defines for Intel SCH HDA snoop control */
+#define INTEL_SCH_HDA_DEVC      0x78
+#define INTEL_SCH_HDA_DEVC_NOSNOOP       (0x1<<11)
+
+/* Define IN stream 0 FIFO size offset in VIA controller */
+#define VIA_IN_STREAM0_FIFO_SIZE_OFFSET        0x90
+/* Define VIA HD Audio Device ID*/
+#define VIA_HDAC_DEVICE_ID             0x3288
+
+/* HD Audio class code */
+#define PCI_CLASS_MULTIMEDIA_HD_AUDIO  0x0403
 
 /*
  */
 
 struct azx_dev {
-       u32 *bdl;               /* virtual address of the BDL */
-       dma_addr_t bdl_addr;    /* physical address of the BDL */
+       struct snd_dma_buffer bdl; /* BDL buffer */
        u32 *posbuf;            /* position buffer pointer */
 
        unsigned int bufsize;   /* size of the play buffer in bytes */
-       unsigned int fragsize;  /* size of each period in bytes */
+       unsigned int period_bytes; /* size of the period in bytes */
        unsigned int frags;     /* number for period in the play buffer */
        unsigned int fifo_size; /* FIFO size */
+       unsigned long start_wallclk;    /* start + minimum wallclk */
+       unsigned long period_wallclk;   /* wallclk for period */
 
        void __iomem *sd_addr;  /* stream descriptor pointer */
 
@@ -301,11 +356,17 @@ struct azx_dev {
                                         */
        unsigned char stream_tag;       /* assigned stream */
        unsigned char index;            /* stream index */
-       /* for sanity check of position buffer */
-       unsigned int period_intr;
+       int device;                     /* last device number assigned to */
 
        unsigned int opened :1;
        unsigned int running :1;
+       unsigned int irq_pending :1;
+       /*
+        * For VIA:
+        *  A flag to ensure DMA position is 0
+        *  when link position is not greater than FIFO size
+        */
+       unsigned int insufficient :1;
 };
 
 /* CORB/RIRB */
@@ -316,13 +377,14 @@ struct azx_rb {
        dma_addr_t addr;        /* physical address of CORB/RIRB buffer */
        /* for RIRB */
        unsigned short rp, wp;  /* read/write pointers */
-       int cmds;               /* number of pending requests */
-       u32 res;                /* last read value */
+       int cmds[AZX_MAX_CODECS];       /* number of pending requests */
+       u32 res[AZX_MAX_CODECS];        /* last read value */
 };
 
 struct azx {
        struct snd_card *card;
        struct pci_dev *pci;
+       int dev_index;
 
        /* chip type specific */
        int driver_type;
@@ -345,53 +407,72 @@ struct azx {
        struct azx_dev *azx_dev;
 
        /* PCM */
-       unsigned int pcm_devs;
-       struct snd_pcm *pcm[AZX_MAX_PCMS];
+       struct snd_pcm *pcm[HDA_MAX_PCMS];
 
        /* HD codec */
        unsigned short codec_mask;
+       int  codec_probe_mask; /* copied from probe_mask option */
        struct hda_bus *bus;
+       unsigned int beep_mode;
 
        /* CORB/RIRB */
        struct azx_rb corb;
        struct azx_rb rirb;
 
-       /* BDL, CORB/RIRB and position buffers */
-       struct snd_dma_buffer bdl;
+       /* CORB/RIRB and position buffers */
        struct snd_dma_buffer rb;
        struct snd_dma_buffer posbuf;
 
        /* flags */
-       int position_fix;
+       int position_fix[2]; /* for both playback/capture streams */
+       int poll_count;
        unsigned int running :1;
        unsigned int initialized :1;
        unsigned int single_cmd :1;
        unsigned int polling_mode :1;
        unsigned int msi :1;
+       unsigned int irq_pending_warned :1;
+       unsigned int via_dmapos_patch :1; /* enable DMA-position fix for VIA */
+       unsigned int probing :1; /* codec probing phase */
 
        /* for debugging */
-       unsigned int last_cmd;  /* last issued command (to sync) */
+       unsigned int last_cmd[AZX_MAX_CODECS];
+
+       /* for pending irqs */
+       struct work_struct irq_pending_work;
+
+       /* reboot notifier (for mysterious hangup problem at power-down) */
+       struct notifier_block reboot_notifier;
 };
 
 /* driver types */
 enum {
        AZX_DRIVER_ICH,
+       AZX_DRIVER_PCH,
+       AZX_DRIVER_SCH,
        AZX_DRIVER_ATI,
        AZX_DRIVER_ATIHDMI,
        AZX_DRIVER_VIA,
        AZX_DRIVER_SIS,
        AZX_DRIVER_ULI,
        AZX_DRIVER_NVIDIA,
+       AZX_DRIVER_TERA,
+       AZX_DRIVER_GENERIC,
+       AZX_NUM_DRIVERS, /* keep this as last entry */
 };
 
 static char *driver_short_names[] __devinitdata = {
        [AZX_DRIVER_ICH] = "HDA Intel",
+       [AZX_DRIVER_PCH] = "HDA Intel PCH",
+       [AZX_DRIVER_SCH] = "HDA Intel MID",
        [AZX_DRIVER_ATI] = "HDA ATI SB",
        [AZX_DRIVER_ATIHDMI] = "HDA ATI HDMI",
        [AZX_DRIVER_VIA] = "HDA VIA VT82xx",
        [AZX_DRIVER_SIS] = "HDA SIS966",
        [AZX_DRIVER_ULI] = "HDA ULI M5461",
        [AZX_DRIVER_NVIDIA] = "HDA NVidia",
+       [AZX_DRIVER_TERA] = "HDA Teradici", 
+       [AZX_DRIVER_GENERIC] = "HD-Audio Generic",
 };
 
 /*
@@ -426,13 +507,8 @@ static char *driver_short_names[] __devinitdata = {
 /* for pcm support */
 #define get_azx_dev(substream) (substream->runtime->private_data)
 
-/* Get the upper 32bit of the given dma_addr_t
- * Compiler should optimize and eliminate the code if dma_addr_t is 32bit
- */
-#define upper_32bit(addr) (sizeof(addr) > 4 ? (u32)((addr) >> 32) : (u32)0)
-
 static int azx_acquire_irq(struct azx *chip, int do_disconnect);
-
+static int azx_send_cmd(struct hda_bus *bus, unsigned int val);
 /*
  * Interface for HD codec
  */
@@ -457,60 +533,92 @@ static int azx_alloc_cmd_io(struct azx *chip)
 
 static void azx_init_cmd_io(struct azx *chip)
 {
+       spin_lock_irq(&chip->reg_lock);
        /* CORB set up */
        chip->corb.addr = chip->rb.addr;
        chip->corb.buf = (u32 *)chip->rb.area;
        azx_writel(chip, CORBLBASE, (u32)chip->corb.addr);
-       azx_writel(chip, CORBUBASE, upper_32bit(chip->corb.addr));
+       azx_writel(chip, CORBUBASE, upper_32_bits(chip->corb.addr));
 
        /* set the corb size to 256 entries (ULI requires explicitly) */
        azx_writeb(chip, CORBSIZE, 0x02);
        /* set the corb write pointer to 0 */
        azx_writew(chip, CORBWP, 0);
        /* reset the corb hw read pointer */
-       azx_writew(chip, CORBRP, ICH6_RBRWP_CLR);
+       azx_writew(chip, CORBRP, ICH6_CORBRP_RST);
        /* enable corb dma */
-       azx_writeb(chip, CORBCTL, ICH6_RBCTL_DMA_EN);
+       azx_writeb(chip, CORBCTL, ICH6_CORBCTL_RUN);
 
        /* RIRB set up */
        chip->rirb.addr = chip->rb.addr + 2048;
        chip->rirb.buf = (u32 *)(chip->rb.area + 2048);
+       chip->rirb.wp = chip->rirb.rp = 0;
+       memset(chip->rirb.cmds, 0, sizeof(chip->rirb.cmds));
        azx_writel(chip, RIRBLBASE, (u32)chip->rirb.addr);
-       azx_writel(chip, RIRBUBASE, upper_32bit(chip->rirb.addr));
+       azx_writel(chip, RIRBUBASE, upper_32_bits(chip->rirb.addr));
 
        /* set the rirb size to 256 entries (ULI requires explicitly) */
        azx_writeb(chip, RIRBSIZE, 0x02);
        /* reset the rirb hw write pointer */
-       azx_writew(chip, RIRBWP, ICH6_RBRWP_CLR);
+       azx_writew(chip, RIRBWP, ICH6_RIRBWP_RST);
        /* set N=1, get RIRB response interrupt for new entry */
        azx_writew(chip, RINTCNT, 1);
        /* enable rirb dma and response irq */
        azx_writeb(chip, RIRBCTL, ICH6_RBCTL_DMA_EN | ICH6_RBCTL_IRQ_EN);
-       chip->rirb.rp = chip->rirb.cmds = 0;
+       spin_unlock_irq(&chip->reg_lock);
 }
 
 static void azx_free_cmd_io(struct azx *chip)
 {
+       spin_lock_irq(&chip->reg_lock);
        /* disable ringbuffer DMAs */
        azx_writeb(chip, RIRBCTL, 0);
        azx_writeb(chip, CORBCTL, 0);
+       spin_unlock_irq(&chip->reg_lock);
+}
+
+static unsigned int azx_command_addr(u32 cmd)
+{
+       unsigned int addr = cmd >> 28;
+
+       if (addr >= AZX_MAX_CODECS) {
+               snd_BUG();
+               addr = 0;
+       }
+
+       return addr;
+}
+
+static unsigned int azx_response_addr(u32 res)
+{
+       unsigned int addr = res & 0xf;
+
+       if (addr >= AZX_MAX_CODECS) {
+               snd_BUG();
+               addr = 0;
+       }
+
+       return addr;
 }
 
 /* send a command */
-static int azx_corb_send_cmd(struct hda_codec *codec, u32 val)
+static int azx_corb_send_cmd(struct hda_bus *bus, u32 val)
 {
-       struct azx *chip = codec->bus->private_data;
+       struct azx *chip = bus->private_data;
+       unsigned int addr = azx_command_addr(val);
        unsigned int wp;
 
+       spin_lock_irq(&chip->reg_lock);
+
        /* add command to corb */
        wp = azx_readb(chip, CORBWP);
        wp++;
        wp %= ICH6_MAX_CORB_ENTRIES;
 
-       spin_lock_irq(&chip->reg_lock);
-       chip->rirb.cmds++;
+       chip->rirb.cmds[addr]++;
        chip->corb.buf[wp] = cpu_to_le32(val);
        azx_writel(chip, CORBWP, wp);
+
        spin_unlock_irq(&chip->reg_lock);
 
        return 0;
@@ -522,13 +630,14 @@ static int azx_corb_send_cmd(struct hda_codec *codec, u32 val)
 static void azx_update_rirb(struct azx *chip)
 {
        unsigned int rp, wp;
+       unsigned int addr;
        u32 res, res_ex;
 
        wp = azx_readb(chip, RIRBWP);
        if (wp == chip->rirb.wp)
                return;
        chip->rirb.wp = wp;
-               
+
        while (chip->rirb.rp != wp) {
                chip->rirb.rp++;
                chip->rirb.rp %= ICH6_MAX_RIRB_ENTRIES;
@@ -536,62 +645,114 @@ static void azx_update_rirb(struct azx *chip)
                rp = chip->rirb.rp << 1; /* an RIRB entry is 8-bytes */
                res_ex = le32_to_cpu(chip->rirb.buf[rp + 1]);
                res = le32_to_cpu(chip->rirb.buf[rp]);
+               addr = azx_response_addr(res_ex);
                if (res_ex & ICH6_RIRB_EX_UNSOL_EV)
                        snd_hda_queue_unsol_event(chip->bus, res, res_ex);
-               else if (chip->rirb.cmds) {
-                       chip->rirb.cmds--;
-                       chip->rirb.res = res;
-               }
+               else if (chip->rirb.cmds[addr]) {
+                       chip->rirb.res[addr] = res;
+                       smp_wmb();
+                       chip->rirb.cmds[addr]--;
+               } else
+                       snd_printk(KERN_ERR SFX "spurious response %#x:%#x, "
+                                  "last cmd=%#08x\n",
+                                  res, res_ex,
+                                  chip->last_cmd[addr]);
        }
 }
 
 /* receive a response */
-static unsigned int azx_rirb_get_response(struct hda_codec *codec)
+static unsigned int azx_rirb_get_response(struct hda_bus *bus,
+                                         unsigned int addr)
 {
-       struct azx *chip = codec->bus->private_data;
+       struct azx *chip = bus->private_data;
        unsigned long timeout;
+       int do_poll = 0;
 
  again:
        timeout = jiffies + msecs_to_jiffies(1000);
-       do {
-               if (chip->polling_mode) {
+       for (;;) {
+               if (chip->polling_mode || do_poll) {
                        spin_lock_irq(&chip->reg_lock);
                        azx_update_rirb(chip);
                        spin_unlock_irq(&chip->reg_lock);
                }
-               if (!chip->rirb.cmds)
-                       return chip->rirb.res; /* the last value */
-               schedule_timeout_uninterruptible(1);
-       } while (time_after_eq(timeout, jiffies));
+               if (!chip->rirb.cmds[addr]) {
+                       smp_rmb();
+                       bus->rirb_error = 0;
+
+                       if (!do_poll)
+                               chip->poll_count = 0;
+                       return chip->rirb.res[addr]; /* the last value */
+               }
+               if (time_after(jiffies, timeout))
+                       break;
+               if (bus->needs_damn_long_delay)
+                       msleep(2); /* temporary workaround */
+               else {
+                       udelay(10);
+                       cond_resched();
+               }
+       }
+
+       if (!chip->polling_mode && chip->poll_count < 2) {
+               snd_printdd(SFX "azx_get_response timeout, "
+                          "polling the codec once: last cmd=0x%08x\n",
+                          chip->last_cmd[addr]);
+               do_poll = 1;
+               chip->poll_count++;
+               goto again;
+       }
+
+
+       if (!chip->polling_mode) {
+               snd_printk(KERN_WARNING SFX "azx_get_response timeout, "
+                          "switching to polling mode: last cmd=0x%08x\n",
+                          chip->last_cmd[addr]);
+               chip->polling_mode = 1;
+               goto again;
+       }
 
        if (chip->msi) {
-               snd_printk(KERN_WARNING "hda_intel: No response from codec, "
-                          "disabling MSI: last cmd=0x%08x\n", chip->last_cmd);
+               snd_printk(KERN_WARNING SFX "No response from codec, "
+                          "disabling MSI: last cmd=0x%08x\n",
+                          chip->last_cmd[addr]);
                free_irq(chip->irq, chip);
                chip->irq = -1;
                pci_disable_msi(chip->pci);
                chip->msi = 0;
-               if (azx_acquire_irq(chip, 1) < 0)
+               if (azx_acquire_irq(chip, 1) < 0) {
+                       bus->rirb_error = 1;
                        return -1;
+               }
                goto again;
        }
 
-       if (!chip->polling_mode) {
-               snd_printk(KERN_WARNING "hda_intel: azx_get_response timeout, "
-                          "switching to polling mode: last cmd=0x%08x\n",
-                          chip->last_cmd);
-               chip->polling_mode = 1;
-               goto again;
+       if (chip->probing) {
+               /* If this critical timeout happens during the codec probing
+                * phase, this is likely an access to a non-existing codec
+                * slot.  Better to return an error and reset the system.
+                */
+               return -1;
+       }
+
+       /* a fatal communication error; need either to reset or to fallback
+        * to the single_cmd mode
+        */
+       bus->rirb_error = 1;
+       if (bus->allow_bus_reset && !bus->response_reset && !bus->in_reset) {
+               bus->response_reset = 1;
+               return -1; /* give a chance to retry */
        }
 
        snd_printk(KERN_ERR "hda_intel: azx_get_response timeout, "
                   "switching to single_cmd mode: last cmd=0x%08x\n",
-                  chip->last_cmd);
-       chip->rirb.rp = azx_readb(chip, RIRBWP);
-       chip->rirb.cmds = 0;
-       /* switch to single_cmd mode */
+                  chip->last_cmd[addr]);
        chip->single_cmd = 1;
+       bus->response_reset = 0;
+       /* release CORB/RIRB */
        azx_free_cmd_io(chip);
+       /* disable unsolicited responses */
+       azx_writel(chip, GCTL, azx_readl(chip, GCTL) & ~ICH6_GCTL_UNSOL);
        return -1;
 }
 
@@ -605,12 +766,35 @@ static unsigned int azx_rirb_get_response(struct hda_codec *codec)
  *       I left the codes, however, for debugging/testing purposes.
  */
 
+/* receive a response */
+static int azx_single_wait_for_response(struct azx *chip, unsigned int addr)
+{
+       int timeout = 50;
+
+       while (timeout--) {
+               /* check IRV busy bit */
+               if (azx_readw(chip, IRS) & ICH6_IRS_VALID) {
+                       /* reuse rirb.res as the response return value */
+                       chip->rirb.res[addr] = azx_readl(chip, IR);
+                       return 0;
+               }
+               udelay(1);
+       }
+       if (printk_ratelimit())
+               snd_printd(SFX "get_response timeout: IRS=0x%x\n",
+                          azx_readw(chip, IRS));
+       chip->rirb.res[addr] = -1;
+       return -EIO;
+}
+
 /* send a command */
-static int azx_single_send_cmd(struct hda_codec *codec, u32 val)
+static int azx_single_send_cmd(struct hda_bus *bus, u32 val)
 {
-       struct azx *chip = codec->bus->private_data;
+       struct azx *chip = bus->private_data;
+       unsigned int addr = azx_command_addr(val);
        int timeout = 50;
 
+       bus->rirb_error = 0;
        while (timeout--) {
                /* check ICB busy bit */
                if (!((azx_readw(chip, IRS) & ICH6_IRS_BUSY))) {
@@ -620,30 +804,22 @@ static int azx_single_send_cmd(struct hda_codec *codec, u32 val)
                        azx_writel(chip, IC, val);
                        azx_writew(chip, IRS, azx_readw(chip, IRS) |
                                   ICH6_IRS_BUSY);
-                       return 0;
+                       return azx_single_wait_for_response(chip, addr);
                }
                udelay(1);
        }
-       snd_printd(SFX "send_cmd timeout: IRS=0x%x, val=0x%x\n",
-                  azx_readw(chip, IRS), val);
+       if (printk_ratelimit())
+               snd_printd(SFX "send_cmd timeout: IRS=0x%x, val=0x%x\n",
+                          azx_readw(chip, IRS), val);
        return -EIO;
 }
 
 /* receive a response */
-static unsigned int azx_single_get_response(struct hda_codec *codec)
+static unsigned int azx_single_get_response(struct hda_bus *bus,
+                                           unsigned int addr)
 {
-       struct azx *chip = codec->bus->private_data;
-       int timeout = 50;
-
-       while (timeout--) {
-               /* check IRV busy bit */
-               if (azx_readw(chip, IRS) & ICH6_IRS_VALID)
-                       return azx_readl(chip, IR);
-               udelay(1);
-       }
-       snd_printd(SFX "get_response timeout: IRS=0x%x\n",
-                  azx_readw(chip, IRS));
-       return (unsigned int)-1;
+       struct azx *chip = bus->private_data;
+       return chip->rirb.res[addr];
 }
 
 /*
@@ -654,45 +830,40 @@ static unsigned int azx_single_get_response(struct hda_codec *codec)
  */
 
 /* send a command */
-static int azx_send_cmd(struct hda_codec *codec, hda_nid_t nid,
-                       int direct, unsigned int verb,
-                       unsigned int para)
+static int azx_send_cmd(struct hda_bus *bus, unsigned int val)
 {
-       struct azx *chip = codec->bus->private_data;
-       u32 val;
-
-       val = (u32)(codec->addr & 0x0f) << 28;
-       val |= (u32)direct << 27;
-       val |= (u32)nid << 20;
-       val |= verb << 8;
-       val |= para;
-       chip->last_cmd = val;
+       struct azx *chip = bus->private_data;
 
+       chip->last_cmd[azx_command_addr(val)] = val;
        if (chip->single_cmd)
-               return azx_single_send_cmd(codec, val);
+               return azx_single_send_cmd(bus, val);
        else
-               return azx_corb_send_cmd(codec, val);
+               return azx_corb_send_cmd(bus, val);
 }
 
 /* get a response */
-static unsigned int azx_get_response(struct hda_codec *codec)
+static unsigned int azx_get_response(struct hda_bus *bus,
+                                    unsigned int addr)
 {
-       struct azx *chip = codec->bus->private_data;
+       struct azx *chip = bus->private_data;
        if (chip->single_cmd)
-               return azx_single_get_response(codec);
+               return azx_single_get_response(bus, addr);
        else
-               return azx_rirb_get_response(codec);
+               return azx_rirb_get_response(bus, addr);
 }
 
 #ifdef CONFIG_SND_HDA_POWER_SAVE
-static void azx_power_notify(struct hda_codec *codec);
+static void azx_power_notify(struct hda_bus *bus);
 #endif
 
 /* reset codec link */
-static int azx_reset(struct azx *chip)
+static int azx_reset(struct azx *chip, int full_reset)
 {
        int count;
 
+       if (!full_reset)
+               goto __skip;
+
        /* clear STATESTS */
        azx_writeb(chip, STATESTS, STATESTS_INT_MASK);
 
@@ -718,19 +889,22 @@ static int azx_reset(struct azx *chip)
        /* Brent Chartrand said to wait >= 540us for codecs to initialize */
        msleep(1);
 
+      __skip:
        /* check to see if controller is ready */
        if (!azx_readb(chip, GCTL)) {
-               snd_printd("azx_reset: controller not ready!\n");
+               snd_printd(SFX "azx_reset: controller not ready!\n");
                return -EBUSY;
        }
 
        /* Accept unsolicited responses */
-       azx_writel(chip, GCTL, azx_readl(chip, GCTL) | ICH6_GCTL_UREN);
+       if (!chip->single_cmd)
+               azx_writel(chip, GCTL, azx_readl(chip, GCTL) |
+                          ICH6_GCTL_UNSOL);
 
        /* detect codecs */
        if (!chip->codec_mask) {
                chip->codec_mask = azx_readw(chip, STATESTS);
-               snd_printdd("codec_mask = 0x%x\n", chip->codec_mask);
+               snd_printdd(SFX "codec_mask = 0x%x\n", chip->codec_mask);
        }
 
        return 0;
@@ -793,37 +967,47 @@ static void azx_int_clear(struct azx *chip)
 /* start a stream */
 static void azx_stream_start(struct azx *chip, struct azx_dev *azx_dev)
 {
+       /*
+        * Before stream start, initialize parameter
+        */
+       azx_dev->insufficient = 1;
+
        /* enable SIE */
-       azx_writeb(chip, INTCTL,
-                  azx_readb(chip, INTCTL) | (1 << azx_dev->index));
+       azx_writel(chip, INTCTL,
+                  azx_readl(chip, INTCTL) | (1 << azx_dev->index));
        /* set DMA start and interrupt mask */
        azx_sd_writeb(azx_dev, SD_CTL, azx_sd_readb(azx_dev, SD_CTL) |
                      SD_CTL_DMA_START | SD_INT_MASK);
 }
 
-/* stop a stream */
-static void azx_stream_stop(struct azx *chip, struct azx_dev *azx_dev)
+/* stop DMA */
+static void azx_stream_clear(struct azx *chip, struct azx_dev *azx_dev)
 {
-       /* stop DMA */
        azx_sd_writeb(azx_dev, SD_CTL, azx_sd_readb(azx_dev, SD_CTL) &
                      ~(SD_CTL_DMA_START | SD_INT_MASK));
        azx_sd_writeb(azx_dev, SD_STS, SD_INT_MASK); /* to be sure */
+}
+
+/* stop a stream */
+static void azx_stream_stop(struct azx *chip, struct azx_dev *azx_dev)
+{
+       azx_stream_clear(chip, azx_dev);
        /* disable SIE */
-       azx_writeb(chip, INTCTL,
-                  azx_readb(chip, INTCTL) & ~(1 << azx_dev->index));
+       azx_writel(chip, INTCTL,
+                  azx_readl(chip, INTCTL) & ~(1 << azx_dev->index));
 }
 
 
 /*
  * reset and start the controller registers
  */
-static void azx_init_chip(struct azx *chip)
+static void azx_init_chip(struct azx *chip, int full_reset)
 {
        if (chip->initialized)
                return;
 
        /* reset controller */
-       azx_reset(chip);
+       azx_reset(chip, full_reset);
 
        /* initialize interrupts */
        azx_int_clear(chip);
@@ -835,7 +1019,7 @@ static void azx_init_chip(struct azx *chip)
 
        /* program the position buffer */
        azx_writel(chip, DPLBASE, (u32)chip->posbuf.addr);
-       azx_writel(chip, DPUBASE, upper_32bit(chip->posbuf.addr));
+       azx_writel(chip, DPUBASE, upper_32_bits(chip->posbuf.addr));
 
        chip->initialized = 1;
 }
@@ -857,6 +1041,8 @@ static void update_pci_byte(struct pci_dev *pci, unsigned int reg,
 
 static void azx_init_pci(struct azx *chip)
 {
+       unsigned short snoop;
+
        /* Clear bits 0-2 of PCI register TCSEL (at offset 0x44)
         * TCSEL == Traffic Class Select Register, which sets PCI express QOS
         * Ensuring these bits are 0 clears playback static on some HD Audio
@@ -876,11 +1062,33 @@ static void azx_init_pci(struct azx *chip)
                update_pci_byte(chip->pci,
                                NVIDIA_HDA_TRANSREG_ADDR,
                                0x0f, NVIDIA_HDA_ENABLE_COHBITS);
+               update_pci_byte(chip->pci,
+                               NVIDIA_HDA_ISTRM_COH,
+                               0x01, NVIDIA_HDA_ENABLE_COHBIT);
+               update_pci_byte(chip->pci,
+                               NVIDIA_HDA_OSTRM_COH,
+                               0x01, NVIDIA_HDA_ENABLE_COHBIT);
+               break;
+       case AZX_DRIVER_SCH:
+       case AZX_DRIVER_PCH:
+               pci_read_config_word(chip->pci, INTEL_SCH_HDA_DEVC, &snoop);
+               if (snoop & INTEL_SCH_HDA_DEVC_NOSNOOP) {
+                       pci_write_config_word(chip->pci, INTEL_SCH_HDA_DEVC,
+                               snoop & (~INTEL_SCH_HDA_DEVC_NOSNOOP));
+                       pci_read_config_word(chip->pci,
+                               INTEL_SCH_HDA_DEVC, &snoop);
+                       snd_printdd(SFX "HDA snoop disabled, enabling ... %s\n",
+                               (snoop & INTEL_SCH_HDA_DEVC_NOSNOOP)
+                               ? "Failed" : "OK");
+               }
                break;
+
         }
 }
 
 
+static int azx_position_ok(struct azx *chip, struct azx_dev *azx_dev);
+
 /*
  * interrupt handler
  */
@@ -889,7 +1097,8 @@ static irqreturn_t azx_interrupt(int irq, void *dev_id)
        struct azx *chip = dev_id;
        struct azx_dev *azx_dev;
        u32 status;
-       int i;
+       u8 sd_status;
+       int i, ok;
 
        spin_lock(&chip->reg_lock);
 
@@ -902,12 +1111,23 @@ static irqreturn_t azx_interrupt(int irq, void *dev_id)
        for (i = 0; i < chip->num_streams; i++) {
                azx_dev = &chip->azx_dev[i];
                if (status & azx_dev->sd_int_sta_mask) {
+                       sd_status = azx_sd_readb(azx_dev, SD_STS);
                        azx_sd_writeb(azx_dev, SD_STS, SD_INT_MASK);
-                       if (azx_dev->substream && azx_dev->running) {
-                               azx_dev->period_intr++;
+                       if (!azx_dev->substream || !azx_dev->running ||
+                           !(sd_status & SD_INT_COMPLETE))
+                               continue;
+                       /* check whether this IRQ is really acceptable */
+                       ok = azx_position_ok(chip, azx_dev);
+                       if (ok == 1) {
+                               azx_dev->irq_pending = 0;
                                spin_unlock(&chip->reg_lock);
                                snd_pcm_period_elapsed(azx_dev->substream);
                                spin_lock(&chip->reg_lock);
+                       } else if (ok == 0 && chip->bus && chip->bus->workq) {
+                               /* bogus IRQ, process it later */
+                               azx_dev->irq_pending = 1;
+                               queue_work(chip->bus->workq,
+                                          &chip->irq_pending_work);
                        }
                }
        }
@@ -915,7 +1135,7 @@ static irqreturn_t azx_interrupt(int irq, void *dev_id)
        /* clear rirb int */
        status = azx_readb(chip, RIRBSTS);
        if (status & RIRB_INT_MASK) {
-               if (!chip->single_cmd && (status & RIRB_INT_RESPONSE))
+               if (status & RIRB_INT_RESPONSE)
                        azx_update_rirb(chip);
                azx_writeb(chip, RIRBSTS, RIRB_INT_MASK);
        }
@@ -932,46 +1152,112 @@ static irqreturn_t azx_interrupt(int irq, void *dev_id)
 
 
 /*
+ * set up a BDL entry
+ */
+static int setup_bdle(struct snd_pcm_substream *substream,
+                     struct azx_dev *azx_dev, u32 **bdlp,
+                     int ofs, int size, int with_ioc)
+{
+       u32 *bdl = *bdlp;
+
+       while (size > 0) {
+               dma_addr_t addr;
+               int chunk;
+
+               if (azx_dev->frags >= AZX_MAX_BDL_ENTRIES)
+                       return -EINVAL;
+
+               addr = snd_pcm_sgbuf_get_addr(substream, ofs);
+               /* program the address field of the BDL entry */
+               bdl[0] = cpu_to_le32((u32)addr);
+               bdl[1] = cpu_to_le32(upper_32_bits(addr));
+               /* program the size field of the BDL entry */
+               chunk = snd_pcm_sgbuf_get_chunk_size(substream, ofs, size);
+               bdl[2] = cpu_to_le32(chunk);
+               /* program the IOC to enable interrupt
+                * only when the whole fragment is processed
+                */
+               size -= chunk;
+               bdl[3] = (size || !with_ioc) ? 0 : cpu_to_le32(0x01);
+               bdl += 4;
+               azx_dev->frags++;
+               ofs += chunk;
+       }
+       *bdlp = bdl;
+       return ofs;
+}
+
+/*
  * set up BDL entries
  */
-static void azx_setup_periods(struct azx_dev *azx_dev)
+static int azx_setup_periods(struct azx *chip,
+                            struct snd_pcm_substream *substream,
+                            struct azx_dev *azx_dev)
 {
-       u32 *bdl = azx_dev->bdl;
-       dma_addr_t dma_addr = azx_dev->substream->runtime->dma_addr;
-       int idx;
+       u32 *bdl;
+       int i, ofs, periods, period_bytes;
+       int pos_adj;
 
        /* reset BDL address */
        azx_sd_writel(azx_dev, SD_BDLPL, 0);
        azx_sd_writel(azx_dev, SD_BDLPU, 0);
 
-       /* program the initial BDL entries */
-       for (idx = 0; idx < azx_dev->frags; idx++) {
-               unsigned int off = idx << 2; /* 4 dword step */
-               dma_addr_t addr = dma_addr + idx * azx_dev->fragsize;
-               /* program the address field of the BDL entry */
-               bdl[off] = cpu_to_le32((u32)addr);
-               bdl[off+1] = cpu_to_le32(upper_32bit(addr));
+       period_bytes = azx_dev->period_bytes;
+       periods = azx_dev->bufsize / period_bytes;
 
-               /* program the size field of the BDL entry */
-               bdl[off+2] = cpu_to_le32(azx_dev->fragsize);
-
-               /* program the IOC to enable interrupt when buffer completes */
-               bdl[off+3] = cpu_to_le32(0x01);
+       /* program the initial BDL entries */
+       bdl = (u32 *)azx_dev->bdl.area;
+       ofs = 0;
+       azx_dev->frags = 0;
+       pos_adj = bdl_pos_adj[chip->dev_index];
+       if (pos_adj > 0) {
+               struct snd_pcm_runtime *runtime = substream->runtime;
+               int pos_align = pos_adj;
+               pos_adj = (pos_adj * runtime->rate + 47999) / 48000;
+               if (!pos_adj)
+                       pos_adj = pos_align;
+               else
+                       pos_adj = ((pos_adj + pos_align - 1) / pos_align) *
+                               pos_align;
+               pos_adj = frames_to_bytes(runtime, pos_adj);
+               if (pos_adj >= period_bytes) {
+                       snd_printk(KERN_WARNING SFX "Too big adjustment %d\n",
+                                  bdl_pos_adj[chip->dev_index]);
+                       pos_adj = 0;
+               } else {
+                       ofs = setup_bdle(substream, azx_dev,
+                                        &bdl, ofs, pos_adj, 1);
+                       if (ofs < 0)
+                               goto error;
+               }
+       } else
+               pos_adj = 0;
+       for (i = 0; i < periods; i++) {
+               if (i == periods - 1 && pos_adj)
+                       ofs = setup_bdle(substream, azx_dev, &bdl, ofs,
+                                        period_bytes - pos_adj, 0);
+               else
+                       ofs = setup_bdle(substream, azx_dev, &bdl, ofs,
+                                        period_bytes, 1);
+               if (ofs < 0)
+                       goto error;
        }
+       return 0;
+
+ error:
+       snd_printk(KERN_ERR SFX "Too many BDL entries: buffer=%d, period=%d\n",
+                  azx_dev->bufsize, period_bytes);
+       return -EINVAL;
 }
 
-/*
- * set up the SD for streaming
- */
-static int azx_setup_controller(struct azx *chip, struct azx_dev *azx_dev)
+/* reset stream */
+static void azx_stream_reset(struct azx *chip, struct azx_dev *azx_dev)
 {
        unsigned char val;
        int timeout;
 
-       /* make sure the run bit is zero for SD */
-       azx_sd_writeb(azx_dev, SD_CTL, azx_sd_readb(azx_dev, SD_CTL) &
-                     ~SD_CTL_DMA_START);
-       /* reset stream */
+       azx_stream_clear(chip, azx_dev);
+
        azx_sd_writeb(azx_dev, SD_CTL, azx_sd_readb(azx_dev, SD_CTL) |
                      SD_CTL_STREAM_RESET);
        udelay(3);
@@ -989,6 +1275,17 @@ static int azx_setup_controller(struct azx *chip, struct azx_dev *azx_dev)
               --timeout)
                ;
 
+       /* reset first position - may not be synced with hw at this time */
+       *azx_dev->posbuf = 0;
+}
+
+/*
+ * set up the SD for streaming
+ */
+static int azx_setup_controller(struct azx *chip, struct azx_dev *azx_dev)
+{
+       /* make sure the run bit is zero for SD */
+       azx_stream_clear(chip, azx_dev);
        /* program the stream_tag */
        azx_sd_writel(azx_dev, SD_CTL,
                      (azx_sd_readl(azx_dev, SD_CTL) & ~SD_CTL_STREAM_TAG_MASK)|
@@ -1006,14 +1303,20 @@ static int azx_setup_controller(struct azx *chip, struct azx_dev *azx_dev)
 
        /* program the BDL address */
        /* lower BDL address */
-       azx_sd_writel(azx_dev, SD_BDLPL, (u32)azx_dev->bdl_addr);
+       azx_sd_writel(azx_dev, SD_BDLPL, (u32)azx_dev->bdl.addr);
        /* upper BDL address */
-       azx_sd_writel(azx_dev, SD_BDLPU, upper_32bit(azx_dev->bdl_addr));
+       azx_sd_writel(azx_dev, SD_BDLPU, upper_32_bits(azx_dev->bdl.addr));
 
        /* enable the position buffer */
-       if (!(azx_readl(chip, DPLBASE) & ICH6_DPLBASE_ENABLE))
-               azx_writel(chip, DPLBASE,
-                          (u32)chip->posbuf.addr |ICH6_DPLBASE_ENABLE);
+       if (chip->position_fix[0] == POS_FIX_POSBUF ||
+           chip->position_fix[0] == POS_FIX_AUTO ||
+           chip->position_fix[1] == POS_FIX_POSBUF ||
+           chip->position_fix[1] == POS_FIX_AUTO ||
+           chip->via_dmapos_patch) {
+               if (!(azx_readl(chip, DPLBASE) & ICH6_DPLBASE_ENABLE))
+                       azx_writel(chip, DPLBASE,
+                               (u32)chip->posbuf.addr | ICH6_DPLBASE_ENABLE);
+       }
 
        /* set the interrupt enable bits in the descriptor control register */
        azx_sd_writel(azx_dev, SD_CTL,
@@ -1022,25 +1325,66 @@ static int azx_setup_controller(struct azx *chip, struct azx_dev *azx_dev)
        return 0;
 }
 
+/*
+ * Probe the given codec address
+ */
+static int probe_codec(struct azx *chip, int addr)
+{
+       unsigned int cmd = (addr << 28) | (AC_NODE_ROOT << 20) |
+               (AC_VERB_PARAMETERS << 8) | AC_PAR_VENDOR_ID;
+       unsigned int res;
+
+       mutex_lock(&chip->bus->cmd_mutex);
+       chip->probing = 1;
+       azx_send_cmd(chip->bus, cmd);
+       res = azx_get_response(chip->bus, addr);
+       chip->probing = 0;
+       mutex_unlock(&chip->bus->cmd_mutex);
+       if (res == -1)
+               return -EIO;
+       snd_printdd(SFX "codec #%d probed OK\n", addr);
+       return 0;
+}
+
+static int azx_attach_pcm_stream(struct hda_bus *bus, struct hda_codec *codec,
+                                struct hda_pcm *cpcm);
+static void azx_stop_chip(struct azx *chip);
+
+static void azx_bus_reset(struct hda_bus *bus)
+{
+       struct azx *chip = bus->private_data;
+
+       bus->in_reset = 1;
+       azx_stop_chip(chip);
+       azx_init_chip(chip, 1);
+#ifdef CONFIG_PM
+       if (chip->initialized) {
+               int i;
+
+               for (i = 0; i < HDA_MAX_PCMS; i++)
+                       snd_pcm_suspend_all(chip->pcm[i]);
+               snd_hda_suspend(chip->bus);
+               snd_hda_resume(chip->bus);
+       }
+#endif
+       bus->in_reset = 0;
+}
 
 /*
  * Codec initialization
  */
 
-static unsigned int azx_max_codecs[] __devinitdata = {
-       [AZX_DRIVER_ICH] = 3,
-       [AZX_DRIVER_ATI] = 4,
-       [AZX_DRIVER_ATIHDMI] = 4,
-       [AZX_DRIVER_VIA] = 3,           /* FIXME: correct? */
-       [AZX_DRIVER_SIS] = 3,           /* FIXME: correct? */
-       [AZX_DRIVER_ULI] = 3,           /* FIXME: correct? */
-       [AZX_DRIVER_NVIDIA] = 3,        /* FIXME: correct? */
+/* number of codec slots for each chipset: 0 = default slots (i.e. 4) */
+static unsigned int azx_max_codecs[AZX_NUM_DRIVERS] __devinitdata = {
+       [AZX_DRIVER_NVIDIA] = 8,
+       [AZX_DRIVER_TERA] = 1,
 };
 
 static int __devinit azx_codec_create(struct azx *chip, const char *model)
 {
        struct hda_bus_template bus_temp;
-       int c, codecs, audio_codecs, err;
+       int c, codecs, err;
+       int max_slots;
 
        memset(&bus_temp, 0, sizeof(bus_temp));
        bus_temp.private_data = chip;
@@ -1048,7 +1392,10 @@ static int __devinit azx_codec_create(struct azx *chip, const char *model)
        bus_temp.pci = chip->pci;
        bus_temp.ops.command = azx_send_cmd;
        bus_temp.ops.get_response = azx_get_response;
+       bus_temp.ops.attach_pcm = azx_attach_pcm_stream;
+       bus_temp.ops.bus_reset = azx_bus_reset;
 #ifdef CONFIG_SND_HDA_POWER_SAVE
+       bus_temp.power_save = &power_save;
        bus_temp.ops.pm_notify = azx_power_notify;
 #endif
 
@@ -1056,34 +1403,63 @@ static int __devinit azx_codec_create(struct azx *chip, const char *model)
        if (err < 0)
                return err;
 
-       codecs = audio_codecs = 0;
-       for (c = 0; c < AZX_MAX_CODECS; c++) {
-               if ((chip->codec_mask & (1 << c)) & probe_mask) {
+       if (chip->driver_type == AZX_DRIVER_NVIDIA)
+               chip->bus->needs_damn_long_delay = 1;
+
+       codecs = 0;
+       max_slots = azx_max_codecs[chip->driver_type];
+       if (!max_slots)
+               max_slots = AZX_DEFAULT_CODECS;
+
+       /* First try to probe all given codec slots */
+       for (c = 0; c < max_slots; c++) {
+               if ((chip->codec_mask & (1 << c)) & chip->codec_probe_mask) {
+                       if (probe_codec(chip, c) < 0) {
+                               /* Some BIOSen give you wrong codec addresses
+                                * that don't exist
+                                */
+                               snd_printk(KERN_WARNING SFX
+                                          "Codec #%d probe error; "
+                                          "disabling it...\n", c);
+                               chip->codec_mask &= ~(1 << c);
+                               /* More badly, accessing to a non-existing
+                                * codec often screws up the controller chip,
+                                * and disturbs the further communications.
+                                * Thus if an error occurs during probing,
+                                * better to reset the controller chip to
+                                * get back to the sanity state.
+                                */
+                               azx_stop_chip(chip);
+                               azx_init_chip(chip, 1);
+                       }
+               }
+       }
+
+       /* Then create codec instances */
+       for (c = 0; c < max_slots; c++) {
+               if ((chip->codec_mask & (1 << c)) & chip->codec_probe_mask) {
                        struct hda_codec *codec;
                        err = snd_hda_codec_new(chip->bus, c, &codec);
                        if (err < 0)
                                continue;
+                       codec->beep_mode = chip->beep_mode;
                        codecs++;
-                       if (codec->afg)
-                               audio_codecs++;
-               }
-       }
-       if (!audio_codecs) {
-               /* probe additional slots if no codec is found */
-               for (; c < azx_max_codecs[chip->driver_type]; c++) {
-                       if ((chip->codec_mask & (1 << c)) & probe_mask) {
-                               err = snd_hda_codec_new(chip->bus, c, NULL);
-                               if (err < 0)
-                                       continue;
-                               codecs++;
-                       }
                }
        }
        if (!codecs) {
                snd_printk(KERN_ERR SFX "no codecs initialized\n");
                return -ENXIO;
        }
+       return 0;
+}
 
+/* configure each codec instance */
+static int __devinit azx_codec_configure(struct azx *chip)
+{
+       struct hda_codec *codec;
+       list_for_each_entry(codec, &chip->bus->codec_list, list) {
+               snd_hda_codec_configure(codec);
+       }
        return 0;
 }
 
@@ -1093,10 +1469,13 @@ static int __devinit azx_codec_create(struct azx *chip, const char *model)
  */
 
 /* assign a stream for the PCM */
-static inline struct azx_dev *azx_assign_device(struct azx *chip, int stream)
+static inline struct azx_dev *
+azx_assign_device(struct azx *chip, struct snd_pcm_substream *substream)
 {
        int dev, i, nums;
-       if (stream == SNDRV_PCM_STREAM_PLAYBACK) {
+       struct azx_dev *res = NULL;
+
+       if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
                dev = chip->playback_index_offset;
                nums = chip->playback_streams;
        } else {
@@ -1105,10 +1484,15 @@ static inline struct azx_dev *azx_assign_device(struct azx *chip, int stream)
        }
        for (i = 0; i < nums; i++, dev++)
                if (!chip->azx_dev[dev].opened) {
-                       chip->azx_dev[dev].opened = 1;
-                       return &chip->azx_dev[dev];
+                       res = &chip->azx_dev[dev];
+                       if (res->device == substream->pcm->device)
+                               break;
                }
-       return NULL;
+       if (res) {
+               res->opened = 1;
+               res->device = substream->pcm->device;
+       }
+       return res;
 }
 
 /* release the assigned stream */
@@ -1124,7 +1508,8 @@ static struct snd_pcm_hardware azx_pcm_hw = {
                                 SNDRV_PCM_INFO_MMAP_VALID |
                                 /* No full-resume yet implemented */
                                 /* SNDRV_PCM_INFO_RESUME |*/
-                                SNDRV_PCM_INFO_PAUSE),
+                                SNDRV_PCM_INFO_PAUSE |
+                                SNDRV_PCM_INFO_SYNC_START),
        .formats =              SNDRV_PCM_FMTBIT_S16_LE,
        .rates =                SNDRV_PCM_RATE_48000,
        .rate_min =             48000,
@@ -1156,7 +1541,7 @@ static int azx_pcm_open(struct snd_pcm_substream *substream)
        int err;
 
        mutex_lock(&chip->open_mutex);
-       azx_dev = azx_assign_device(chip, substream->stream);
+       azx_dev = azx_assign_device(chip, substream);
        if (azx_dev == NULL) {
                mutex_unlock(&chip->open_mutex);
                return -EBUSY;
@@ -1180,12 +1565,25 @@ static int azx_pcm_open(struct snd_pcm_substream *substream)
                mutex_unlock(&chip->open_mutex);
                return err;
        }
+       snd_pcm_limit_hw_rates(runtime);
+       /* sanity check */
+       if (snd_BUG_ON(!runtime->hw.channels_min) ||
+           snd_BUG_ON(!runtime->hw.channels_max) ||
+           snd_BUG_ON(!runtime->hw.formats) ||
+           snd_BUG_ON(!runtime->hw.rates)) {
+               azx_release_device(azx_dev);
+               hinfo->ops.close(hinfo, apcm->codec, substream);
+               snd_hda_power_down(apcm->codec);
+               mutex_unlock(&chip->open_mutex);
+               return -EINVAL;
+       }
        spin_lock_irqsave(&chip->reg_lock, flags);
        azx_dev->substream = substream;
        azx_dev->running = 0;
        spin_unlock_irqrestore(&chip->reg_lock, flags);
 
        runtime->private_data = azx_dev;
+       snd_pcm_set_sync(substream);
        mutex_unlock(&chip->open_mutex);
        return 0;
 }
@@ -1213,6 +1611,11 @@ static int azx_pcm_close(struct snd_pcm_substream *substream)
 static int azx_pcm_hw_params(struct snd_pcm_substream *substream,
                             struct snd_pcm_hw_params *hw_params)
 {
+       struct azx_dev *azx_dev = get_azx_dev(substream);
+
+       azx_dev->bufsize = 0;
+       azx_dev->period_bytes = 0;
+       azx_dev->format_val = 0;
        return snd_pcm_lib_malloc_pages(substream,
                                        params_buffer_bytes(hw_params));
 }
@@ -1227,6 +1630,9 @@ static int azx_pcm_hw_free(struct snd_pcm_substream *substream)
        azx_sd_writel(azx_dev, SD_BDLPL, 0);
        azx_sd_writel(azx_dev, SD_BDLPU, 0);
        azx_sd_writel(azx_dev, SD_CTL, 0);
+       azx_dev->bufsize = 0;
+       azx_dev->period_bytes = 0;
+       azx_dev->format_val = 0;
 
        hinfo->ops.cleanup(hinfo, apcm->codec, substream);
 
@@ -1240,25 +1646,41 @@ static int azx_pcm_prepare(struct snd_pcm_substream *substream)
        struct azx_dev *azx_dev = get_azx_dev(substream);
        struct hda_pcm_stream *hinfo = apcm->hinfo[substream->stream];
        struct snd_pcm_runtime *runtime = substream->runtime;
+       unsigned int bufsize, period_bytes, format_val;
+       int err;
 
-       azx_dev->bufsize = snd_pcm_lib_buffer_bytes(substream);
-       azx_dev->fragsize = snd_pcm_lib_period_bytes(substream);
-       azx_dev->frags = azx_dev->bufsize / azx_dev->fragsize;
-       azx_dev->format_val = snd_hda_calc_stream_format(runtime->rate,
-                                                        runtime->channels,
-                                                        runtime->format,
-                                                        hinfo->maxbps);
-       if (!azx_dev->format_val) {
+       azx_stream_reset(chip, azx_dev);
+       format_val = snd_hda_calc_stream_format(runtime->rate,
+                                               runtime->channels,
+                                               runtime->format,
+                                               hinfo->maxbps);
+       if (!format_val) {
                snd_printk(KERN_ERR SFX
                           "invalid format_val, rate=%d, ch=%d, format=%d\n",
                           runtime->rate, runtime->channels, runtime->format);
                return -EINVAL;
        }
 
-       snd_printdd("azx_pcm_prepare: bufsize=0x%x, fragsize=0x%x, "
-                   "format=0x%x\n",
-                   azx_dev->bufsize, azx_dev->fragsize, azx_dev->format_val);
-       azx_setup_periods(azx_dev);
+       bufsize = snd_pcm_lib_buffer_bytes(substream);
+       period_bytes = snd_pcm_lib_period_bytes(substream);
+
+       snd_printdd(SFX "azx_pcm_prepare: bufsize=0x%x, format=0x%x\n",
+                   bufsize, format_val);
+
+       if (bufsize != azx_dev->bufsize ||
+           period_bytes != azx_dev->period_bytes ||
+           format_val != azx_dev->format_val) {
+               azx_dev->bufsize = bufsize;
+               azx_dev->period_bytes = period_bytes;
+               azx_dev->format_val = format_val;
+               err = azx_setup_periods(chip, substream, azx_dev);
+               if (err < 0)
+                       return err;
+       }
+
+       /* wallclk has 24Mhz clock source */
+       azx_dev->period_wallclk = (((runtime->period_size * 24000) /
+                                               runtime->rate) * 1000);
        azx_setup_controller(chip, azx_dev);
        if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
                azx_dev->fifo_size = azx_sd_readw(azx_dev, SD_FIFOSIZE) + 1;
@@ -1272,37 +1694,179 @@ static int azx_pcm_prepare(struct snd_pcm_substream *substream)
 static int azx_pcm_trigger(struct snd_pcm_substream *substream, int cmd)
 {
        struct azx_pcm *apcm = snd_pcm_substream_chip(substream);
-       struct azx_dev *azx_dev = get_azx_dev(substream);
        struct azx *chip = apcm->chip;
-       int err = 0;
+       struct azx_dev *azx_dev;
+       struct snd_pcm_substream *s;
+       int rstart = 0, start, nsync = 0, sbits = 0;
+       int nwait, timeout;
 
-       spin_lock(&chip->reg_lock);
        switch (cmd) {
+       case SNDRV_PCM_TRIGGER_START:
+               rstart = 1;
        case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
        case SNDRV_PCM_TRIGGER_RESUME:
-       case SNDRV_PCM_TRIGGER_START:
-               azx_stream_start(chip, azx_dev);
-               azx_dev->running = 1;
+               start = 1;
                break;
        case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
        case SNDRV_PCM_TRIGGER_SUSPEND:
        case SNDRV_PCM_TRIGGER_STOP:
-               azx_stream_stop(chip, azx_dev);
-               azx_dev->running = 0;
+               start = 0;
                break;
        default:
-               err = -EINVAL;
+               return -EINVAL;
+       }
+
+       snd_pcm_group_for_each_entry(s, substream) {
+               if (s->pcm->card != substream->pcm->card)
+                       continue;
+               azx_dev = get_azx_dev(s);
+               sbits |= 1 << azx_dev->index;
+               nsync++;
+               snd_pcm_trigger_done(s, substream);
+       }
+
+       spin_lock(&chip->reg_lock);
+       if (nsync > 1) {
+               /* first, set SYNC bits of corresponding streams */
+               azx_writel(chip, SYNC, azx_readl(chip, SYNC) | sbits);
+       }
+       snd_pcm_group_for_each_entry(s, substream) {
+               if (s->pcm->card != substream->pcm->card)
+                       continue;
+               azx_dev = get_azx_dev(s);
+               if (start) {
+                       azx_dev->start_wallclk = azx_readl(chip, WALLCLK);
+                       if (!rstart)
+                               azx_dev->start_wallclk -=
+                                               azx_dev->period_wallclk;
+                       azx_stream_start(chip, azx_dev);
+               } else {
+                       azx_stream_stop(chip, azx_dev);
+               }
+               azx_dev->running = start;
        }
        spin_unlock(&chip->reg_lock);
-       if (cmd == SNDRV_PCM_TRIGGER_PAUSE_PUSH ||
-           cmd == SNDRV_PCM_TRIGGER_SUSPEND ||
-           cmd == SNDRV_PCM_TRIGGER_STOP) {
-               int timeout = 5000;
-               while ((azx_sd_readb(azx_dev, SD_CTL) & SD_CTL_DMA_START) &&
-                      --timeout)
-                       ;
+       if (start) {
+               if (nsync == 1)
+                       return 0;
+               /* wait until all FIFOs get ready */
+               for (timeout = 5000; timeout; timeout--) {
+                       nwait = 0;
+                       snd_pcm_group_for_each_entry(s, substream) {
+                               if (s->pcm->card != substream->pcm->card)
+                                       continue;
+                               azx_dev = get_azx_dev(s);
+                               if (!(azx_sd_readb(azx_dev, SD_STS) &
+                                     SD_STS_FIFO_READY))
+                                       nwait++;
+                       }
+                       if (!nwait)
+                               break;
+                       cpu_relax();
+               }
+       } else {
+               /* wait until all RUN bits are cleared */
+               for (timeout = 5000; timeout; timeout--) {
+                       nwait = 0;
+                       snd_pcm_group_for_each_entry(s, substream) {
+                               if (s->pcm->card != substream->pcm->card)
+                                       continue;
+                               azx_dev = get_azx_dev(s);
+                               if (azx_sd_readb(azx_dev, SD_CTL) &
+                                   SD_CTL_DMA_START)
+                                       nwait++;
+                       }
+                       if (!nwait)
+                               break;
+                       cpu_relax();
+               }
        }
-       return err;
+       if (nsync > 1) {
+               spin_lock(&chip->reg_lock);
+               /* reset SYNC bits */
+               azx_writel(chip, SYNC, azx_readl(chip, SYNC) & ~sbits);
+               spin_unlock(&chip->reg_lock);
+       }
+       return 0;
+}
+
+/* get the current DMA position with correction on VIA chips */
+static unsigned int azx_via_get_position(struct azx *chip,
+                                        struct azx_dev *azx_dev)
+{
+       unsigned int link_pos, mini_pos, bound_pos;
+       unsigned int mod_link_pos, mod_dma_pos, mod_mini_pos;
+       unsigned int fifo_size;
+
+       link_pos = azx_sd_readl(azx_dev, SD_LPIB);
+       if (azx_dev->index >= 4) {
+               /* Playback, no problem using link position */
+               return link_pos;
+       }
+
+       /* Capture */
+       /* For new chipset,
+        * use mod to get the DMA position just like old chipset
+        */
+       mod_dma_pos = le32_to_cpu(*azx_dev->posbuf);
+       mod_dma_pos %= azx_dev->period_bytes;
+
+       /* azx_dev->fifo_size can't get FIFO size of in stream.
+        * Get from base address + offset.
+        */
+       fifo_size = readw(chip->remap_addr + VIA_IN_STREAM0_FIFO_SIZE_OFFSET);
+
+       if (azx_dev->insufficient) {
+               /* Link position never gather than FIFO size */
+               if (link_pos <= fifo_size)
+                       return 0;
+
+               azx_dev->insufficient = 0;
+       }
+
+       if (link_pos <= fifo_size)
+               mini_pos = azx_dev->bufsize + link_pos - fifo_size;
+       else
+               mini_pos = link_pos - fifo_size;
+
+       /* Find nearest previous boudary */
+       mod_mini_pos = mini_pos % azx_dev->period_bytes;
+       mod_link_pos = link_pos % azx_dev->period_bytes;
+       if (mod_link_pos >= fifo_size)
+               bound_pos = link_pos - mod_link_pos;
+       else if (mod_dma_pos >= mod_mini_pos)
+               bound_pos = mini_pos - mod_mini_pos;
+       else {
+               bound_pos = mini_pos - mod_mini_pos + azx_dev->period_bytes;
+               if (bound_pos >= azx_dev->bufsize)
+                       bound_pos = 0;
+       }
+
+       /* Calculate real DMA position we want */
+       return bound_pos + mod_dma_pos;
+}
+
+static unsigned int azx_get_position(struct azx *chip,
+                                    struct azx_dev *azx_dev)
+{
+       unsigned int pos;
+
+       if (chip->via_dmapos_patch)
+               pos = azx_via_get_position(chip, azx_dev);
+       else {
+               int stream = azx_dev->substream->stream;
+               if (chip->position_fix[stream] == POS_FIX_POSBUF ||
+                   chip->position_fix[stream] == POS_FIX_AUTO) {
+                       /* use the position buffer */
+                       pos = le32_to_cpu(*azx_dev->posbuf);
+               } else {
+                       /* read LPIB */
+                       pos = azx_sd_readl(azx_dev, SD_LPIB);
+               }
+       }
+       if (pos >= azx_dev->bufsize)
+               pos = 0;
+       return pos;
 }
 
 static snd_pcm_uframes_t azx_pcm_pointer(struct snd_pcm_substream *substream)
@@ -1310,30 +1874,105 @@ static snd_pcm_uframes_t azx_pcm_pointer(struct snd_pcm_substream *substream)
        struct azx_pcm *apcm = snd_pcm_substream_chip(substream);
        struct azx *chip = apcm->chip;
        struct azx_dev *azx_dev = get_azx_dev(substream);
+       return bytes_to_frames(substream->runtime,
+                              azx_get_position(chip, azx_dev));
+}
+
+/*
+ * Check whether the current DMA position is acceptable for updating
+ * periods.  Returns non-zero if it's OK.
+ *
+ * Many HD-audio controllers appear pretty inaccurate about
+ * the update-IRQ timing.  The IRQ is issued before actually the
+ * data is processed.  So, we need to process it afterwords in a
+ * workqueue.
+ */
+static int azx_position_ok(struct azx *chip, struct azx_dev *azx_dev)
+{
+       u32 wallclk;
        unsigned int pos;
+       int stream;
 
-       if (chip->position_fix == POS_FIX_POSBUF ||
-           chip->position_fix == POS_FIX_AUTO) {
-               /* use the position buffer */
-               pos = le32_to_cpu(*azx_dev->posbuf);
-               if (chip->position_fix == POS_FIX_AUTO &&
-                   azx_dev->period_intr == 1 && !pos) {
+       wallclk = azx_readl(chip, WALLCLK) - azx_dev->start_wallclk;
+       if (wallclk < (azx_dev->period_wallclk * 2) / 3)
+               return -1;      /* bogus (too early) interrupt */
+
+       stream = azx_dev->substream->stream;
+       pos = azx_get_position(chip, azx_dev);
+       if (chip->position_fix[stream] == POS_FIX_AUTO) {
+               if (!pos) {
                        printk(KERN_WARNING
                               "hda-intel: Invalid position buffer, "
                               "using LPIB read method instead.\n");
-                       chip->position_fix = POS_FIX_NONE;
-                       goto read_lpib;
+                       chip->position_fix[stream] = POS_FIX_LPIB;
+                       pos = azx_get_position(chip, azx_dev);
+               } else
+                       chip->position_fix[stream] = POS_FIX_POSBUF;
+       }
+
+       if (WARN_ONCE(!azx_dev->period_bytes,
+                     "hda-intel: zero azx_dev->period_bytes"))
+               return -1; /* this shouldn't happen! */
+       if (wallclk <= azx_dev->period_wallclk &&
+           pos % azx_dev->period_bytes > azx_dev->period_bytes / 2)
+               /* NG - it's below the first next period boundary */
+               return bdl_pos_adj[chip->dev_index] ? 0 : -1;
+       azx_dev->start_wallclk = wallclk;
+       return 1; /* OK, it's fine */
+}
+
+/*
+ * The work for pending PCM period updates.
+ */
+static void azx_irq_pending_work(struct work_struct *work)
+{
+       struct azx *chip = container_of(work, struct azx, irq_pending_work);
+       int i, pending, ok;
+
+       if (!chip->irq_pending_warned) {
+               printk(KERN_WARNING
+                      "hda-intel: IRQ timing workaround is activated "
+                      "for card #%d. Suggest a bigger bdl_pos_adj.\n",
+                      chip->card->number);
+               chip->irq_pending_warned = 1;
+       }
+
+       for (;;) {
+               pending = 0;
+               spin_lock_irq(&chip->reg_lock);
+               for (i = 0; i < chip->num_streams; i++) {
+                       struct azx_dev *azx_dev = &chip->azx_dev[i];
+                       if (!azx_dev->irq_pending ||
+                           !azx_dev->substream ||
+                           !azx_dev->running)
+                               continue;
+                       ok = azx_position_ok(chip, azx_dev);
+                       if (ok > 0) {
+                               azx_dev->irq_pending = 0;
+                               spin_unlock(&chip->reg_lock);
+                               snd_pcm_period_elapsed(azx_dev->substream);
+                               spin_lock(&chip->reg_lock);
+                       } else if (ok < 0) {
+                               pending = 0;    /* too early */
+                       } else
+                               pending++;
                }
-       } else {
-       read_lpib:
-               /* read LPIB */
-               pos = azx_sd_readl(azx_dev, SD_LPIB);
-               if (chip->position_fix == POS_FIX_FIFO)
-                       pos += azx_dev->fifo_size;
+               spin_unlock_irq(&chip->reg_lock);
+               if (!pending)
+                       return;
+               cond_resched();
        }
-       if (pos >= azx_dev->bufsize)
-               pos = 0;
-       return bytes_to_frames(substream->runtime, pos);
+}
+
+/* clear irq_pending flags and assure no on-going workq */
+static void azx_clear_irq_pending(struct azx *chip)
+{
+       int i;
+
+       spin_lock_irq(&chip->reg_lock);
+       for (i = 0; i < chip->num_streams; i++)
+               chip->azx_dev[i].irq_pending = 0;
+       spin_unlock_irq(&chip->reg_lock);
 }
 
 static struct snd_pcm_ops azx_pcm_ops = {
@@ -1345,106 +1984,64 @@ static struct snd_pcm_ops azx_pcm_ops = {
        .prepare = azx_pcm_prepare,
        .trigger = azx_pcm_trigger,
        .pointer = azx_pcm_pointer,
+       .page = snd_pcm_sgbuf_ops_page,
 };
 
 static void azx_pcm_free(struct snd_pcm *pcm)
 {
-       kfree(pcm->private_data);
+       struct azx_pcm *apcm = pcm->private_data;
+       if (apcm) {
+               apcm->chip->pcm[pcm->device] = NULL;
+               kfree(apcm);
+       }
 }
 
-static int __devinit create_codec_pcm(struct azx *chip, struct hda_codec *codec,
-                                     struct hda_pcm *cpcm, int pcm_dev)
+static int
+azx_attach_pcm_stream(struct hda_bus *bus, struct hda_codec *codec,
+                     struct hda_pcm *cpcm)
 {
-       int err;
+       struct azx *chip = bus->private_data;
        struct snd_pcm *pcm;
        struct azx_pcm *apcm;
+       int pcm_dev = cpcm->device;
+       int s, err;
 
-       /* if no substreams are defined for both playback and capture,
-        * it's just a placeholder.  ignore it.
-        */
-       if (!cpcm->stream[0].substreams && !cpcm->stream[1].substreams)
-               return 0;
-
-       snd_assert(cpcm->name, return -EINVAL);
-
+       if (pcm_dev >= HDA_MAX_PCMS) {
+               snd_printk(KERN_ERR SFX "Invalid PCM device number %d\n",
+                          pcm_dev);
+               return -EINVAL;
+       }
+       if (chip->pcm[pcm_dev]) {
+               snd_printk(KERN_ERR SFX "PCM %d already exists\n", pcm_dev);
+               return -EBUSY;
+       }
        err = snd_pcm_new(chip->card, cpcm->name, pcm_dev,
-                         cpcm->stream[0].substreams,
-                         cpcm->stream[1].substreams,
+                         cpcm->stream[SNDRV_PCM_STREAM_PLAYBACK].substreams,
+                         cpcm->stream[SNDRV_PCM_STREAM_CAPTURE].substreams,
                          &pcm);
        if (err < 0)
                return err;
-       strcpy(pcm->name, cpcm->name);
-       apcm = kmalloc(sizeof(*apcm), GFP_KERNEL);
+       strlcpy(pcm->name, cpcm->name, sizeof(pcm->name));
+       apcm = kzalloc(sizeof(*apcm), GFP_KERNEL);
        if (apcm == NULL)
                return -ENOMEM;
        apcm->chip = chip;
        apcm->codec = codec;
-       apcm->hinfo[0] = &cpcm->stream[0];
-       apcm->hinfo[1] = &cpcm->stream[1];
        pcm->private_data = apcm;
        pcm->private_free = azx_pcm_free;
-       if (cpcm->stream[0].substreams)
-               snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &azx_pcm_ops);
-       if (cpcm->stream[1].substreams)
-               snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &azx_pcm_ops);
-       snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV,
-                                             snd_dma_pci_data(chip->pci),
-                                             1024 * 64, 1024 * 1024);
+       if (cpcm->pcm_type == HDA_PCM_TYPE_MODEM)
+               pcm->dev_class = SNDRV_PCM_CLASS_MODEM;
        chip->pcm[pcm_dev] = pcm;
-       if (chip->pcm_devs < pcm_dev + 1)
-               chip->pcm_devs = pcm_dev + 1;
-
-       return 0;
-}
-
-static int __devinit azx_pcm_create(struct azx *chip)
-{
-       struct hda_codec *codec;
-       int c, err;
-       int pcm_dev;
-
-       err = snd_hda_build_pcms(chip->bus);
-       if (err < 0)
-               return err;
-
-       /* create audio PCMs */
-       pcm_dev = 0;
-       list_for_each_entry(codec, &chip->bus->codec_list, list) {
-               for (c = 0; c < codec->num_pcms; c++) {
-                       if (codec->pcm_info[c].is_modem)
-                               continue; /* create later */
-                       if (pcm_dev >= AZX_MAX_AUDIO_PCMS) {
-                               snd_printk(KERN_ERR SFX
-                                          "Too many audio PCMs\n");
-                               return -EINVAL;
-                       }
-                       err = create_codec_pcm(chip, codec,
-                                              &codec->pcm_info[c], pcm_dev);
-                       if (err < 0)
-                               return err;
-                       pcm_dev++;
-               }
-       }
-
-       /* create modem PCMs */
-       pcm_dev = AZX_MAX_AUDIO_PCMS;
-       list_for_each_entry(codec, &chip->bus->codec_list, list) {
-               for (c = 0; c < codec->num_pcms; c++) {
-                       if (!codec->pcm_info[c].is_modem)
-                               continue; /* already created */
-                       if (pcm_dev >= AZX_MAX_PCMS) {
-                               snd_printk(KERN_ERR SFX
-                                          "Too many modem PCMs\n");
-                               return -EINVAL;
-                       }
-                       err = create_codec_pcm(chip, codec,
-                                              &codec->pcm_info[c], pcm_dev);
-                       if (err < 0)
-                               return err;
-                       chip->pcm[pcm_dev]->dev_class = SNDRV_PCM_CLASS_MODEM;
-                       pcm_dev++;
-               }
+       cpcm->pcm = pcm;
+       for (s = 0; s < 2; s++) {
+               apcm->hinfo[s] = &cpcm->stream[s];
+               if (cpcm->stream[s].substreams)
+                       snd_pcm_set_ops(pcm, s, &azx_pcm_ops);
        }
+       /* buffer pre-allocation */
+       snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV_SG,
+                                             snd_dma_pci_data(chip->pci),
+                                             1024 * 64, 32 * 1024 * 1024);
        return 0;
 }
 
@@ -1469,10 +2066,7 @@ static int __devinit azx_init_stream(struct azx *chip)
         * and initialize
         */
        for (i = 0; i < chip->num_streams; i++) {
-               unsigned int off = sizeof(u32) * (i * AZX_MAX_FRAG * 4);
                struct azx_dev *azx_dev = &chip->azx_dev[i];
-               azx_dev->bdl = (u32 *)(chip->bdl.area + off);
-               azx_dev->bdl_addr = chip->bdl.addr + off;
                azx_dev->posbuf = (u32 __iomem *)(chip->posbuf.area + i * 8);
                /* offset: SDI0=0x80, SDI1=0xa0, ... SDO3=0x160 */
                azx_dev->sd_addr = chip->remap_addr + (0x20 * i + 0x80);
@@ -1490,7 +2084,7 @@ static int azx_acquire_irq(struct azx *chip, int do_disconnect)
 {
        if (request_irq(chip->pci->irq, azx_interrupt,
                        chip->msi ? 0 : IRQF_SHARED,
-                       "HDA Intel", chip)) {
+                       "hda_intel", chip)) {
                printk(KERN_ERR "hda-intel: unable to grab IRQ %d, "
                       "disabling device\n", chip->pci->irq);
                if (do_disconnect)
@@ -1524,21 +2118,22 @@ static void azx_stop_chip(struct azx *chip)
 
 #ifdef CONFIG_SND_HDA_POWER_SAVE
 /* power-up/down the controller */
-static void azx_power_notify(struct hda_codec *codec)
+static void azx_power_notify(struct hda_bus *bus)
 {
-       struct azx *chip = codec->bus->private_data;
+       struct azx *chip = bus->private_data;
        struct hda_codec *c;
        int power_on = 0;
 
-       list_for_each_entry(c, &codec->bus->codec_list, list) {
+       list_for_each_entry(c, &bus->codec_list, list) {
                if (c->power_on) {
                        power_on = 1;
                        break;
                }
        }
        if (power_on)
-               azx_init_chip(chip);
-       else if (chip->running && power_save_controller)
+               azx_init_chip(chip, 1);
+       else if (chip->running && power_save_controller &&
+                !bus->power_keep_link_on)
                azx_stop_chip(chip);
 }
 #endif /* CONFIG_SND_HDA_POWER_SAVE */
@@ -1547,6 +2142,18 @@ static void azx_power_notify(struct hda_codec *codec)
 /*
  * power management
  */
+
+static int snd_hda_codecs_inuse(struct hda_bus *bus)
+{
+       struct hda_codec *codec;
+
+       list_for_each_entry(codec, &bus->codec_list, list) {
+               if (snd_hda_codec_needs_resume(codec))
+                       return 1;
+       }
+       return 0;
+}
+
 static int azx_suspend(struct pci_dev *pci, pm_message_t state)
 {
        struct snd_card *card = pci_get_drvdata(pci);
@@ -1554,13 +2161,13 @@ static int azx_suspend(struct pci_dev *pci, pm_message_t state)
        int i;
 
        snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);
-       for (i = 0; i < chip->pcm_devs; i++)
+       azx_clear_irq_pending(chip);
+       for (i = 0; i < HDA_MAX_PCMS; i++)
                snd_pcm_suspend_all(chip->pcm[i]);
        if (chip->initialized)
-               snd_hda_suspend(chip->bus, state);
+               snd_hda_suspend(chip->bus);
        azx_stop_chip(chip);
        if (chip->irq >= 0) {
-               synchronize_irq(chip->irq);
                free_irq(chip->irq, chip);
                chip->irq = -1;
        }
@@ -1594,7 +2201,7 @@ static int azx_resume(struct pci_dev *pci)
        azx_init_pci(chip);
 
        if (snd_hda_codecs_inuse(chip->bus))
-               azx_init_chip(chip);
+               azx_init_chip(chip, 1);
 
        snd_hda_resume(chip->bus);
        snd_power_change_state(card, SNDRV_CTL_POWER_D0);
@@ -1604,28 +2211,56 @@ static int azx_resume(struct pci_dev *pci)
 
 
 /*
+ * reboot notifier for hang-up problem at power-down
+ */
+static int azx_halt(struct notifier_block *nb, unsigned long event, void *buf)
+{
+       struct azx *chip = container_of(nb, struct azx, reboot_notifier);
+       snd_hda_bus_reboot_notify(chip->bus);
+       azx_stop_chip(chip);
+       return NOTIFY_OK;
+}
+
+static void azx_notifier_register(struct azx *chip)
+{
+       chip->reboot_notifier.notifier_call = azx_halt;
+       register_reboot_notifier(&chip->reboot_notifier);
+}
+
+static void azx_notifier_unregister(struct azx *chip)
+{
+       if (chip->reboot_notifier.notifier_call)
+               unregister_reboot_notifier(&chip->reboot_notifier);
+}
+
+/*
  * destructor
  */
 static int azx_free(struct azx *chip)
 {
+       int i;
+
+       azx_notifier_unregister(chip);
+
        if (chip->initialized) {
-               int i;
+               azx_clear_irq_pending(chip);
                for (i = 0; i < chip->num_streams; i++)
                        azx_stream_stop(chip, &chip->azx_dev[i]);
                azx_stop_chip(chip);
        }
 
-       if (chip->irq >= 0) {
-               synchronize_irq(chip->irq);
+       if (chip->irq >= 0)
                free_irq(chip->irq, (void*)chip);
-       }
        if (chip->msi)
                pci_disable_msi(chip->pci);
        if (chip->remap_addr)
                iounmap(chip->remap_addr);
 
-       if (chip->bdl.area)
-               snd_dma_free_pages(&chip->bdl);
+       if (chip->azx_dev) {
+               for (i = 0; i < chip->num_streams; i++)
+                       if (chip->azx_dev[i].bdl.area)
+                               snd_dma_free_pages(&chip->azx_dev[i].bdl);
+       }
        if (chip->rb.area)
                snd_dma_free_pages(&chip->rb);
        if (chip->posbuf.area)
@@ -1647,8 +2282,24 @@ static int azx_dev_free(struct snd_device *device)
  * white/black-listing for position_fix
  */
 static struct snd_pci_quirk position_fix_list[] __devinitdata = {
-       SND_PCI_QUIRK(0x1028, 0x01cc, "Dell D820", POS_FIX_NONE),
-       SND_PCI_QUIRK(0x1028, 0x01de, "Dell Precision 390", POS_FIX_NONE),
+       SND_PCI_QUIRK(0x1025, 0x009f, "Acer Aspire 5110", POS_FIX_LPIB),
+       SND_PCI_QUIRK(0x1028, 0x01cc, "Dell D820", POS_FIX_LPIB),
+       SND_PCI_QUIRK(0x1028, 0x01de, "Dell Precision 390", POS_FIX_LPIB),
+       SND_PCI_QUIRK(0x1028, 0x01f6, "Dell Latitude 131L", POS_FIX_LPIB),
+       SND_PCI_QUIRK(0x103c, 0x306d, "HP dv3", POS_FIX_LPIB),
+       SND_PCI_QUIRK(0x1043, 0x813d, "ASUS P5AD2", POS_FIX_LPIB),
+       SND_PCI_QUIRK(0x1043, 0x81b3, "ASUS", POS_FIX_LPIB),
+       SND_PCI_QUIRK(0x104d, 0x9069, "Sony VPCS11V9E", POS_FIX_LPIB),
+       SND_PCI_QUIRK(0x1106, 0x3288, "ASUS M2V-MX SE", POS_FIX_LPIB),
+       SND_PCI_QUIRK(0x1179, 0xff10, "Toshiba A100-259", POS_FIX_LPIB),
+       SND_PCI_QUIRK(0x1297, 0x3166, "Shuttle", POS_FIX_LPIB),
+       SND_PCI_QUIRK(0x1458, 0xa022, "ga-ma770-ud3", POS_FIX_LPIB),
+       SND_PCI_QUIRK(0x1462, 0x1002, "MSI Wind U115", POS_FIX_LPIB),
+       SND_PCI_QUIRK(0x1565, 0x820f, "Biostar Microtech", POS_FIX_LPIB),
+       SND_PCI_QUIRK(0x1565, 0x8218, "Biostar Microtech", POS_FIX_LPIB),
+       SND_PCI_QUIRK(0x1849, 0x0888, "775Dual-VSTA", POS_FIX_LPIB),
+       SND_PCI_QUIRK(0x8086, 0x2503, "DG965OT AAD63733-203", POS_FIX_LPIB),
+       SND_PCI_QUIRK(0x8086, 0xd601, "eMachines T5212", POS_FIX_LPIB),
        {}
 };
 
@@ -1656,17 +2307,31 @@ static int __devinit check_position_fix(struct azx *chip, int fix)
 {
        const struct snd_pci_quirk *q;
 
-       if (fix == POS_FIX_AUTO) {
-               q = snd_pci_quirk_lookup(chip->pci, position_fix_list);
-               if (q) {
-                       printk(KERN_INFO
-                                   "hda_intel: position_fix set to %d "
-                                   "for device %04x:%04x\n",
-                                   q->value, q->subvendor, q->subdevice);
-                       return q->value;
-               }
+       switch (fix) {
+       case POS_FIX_LPIB:
+       case POS_FIX_POSBUF:
+               return fix;
        }
-       return fix;
+
+       /* Check VIA/ATI HD Audio Controller exist */
+       switch (chip->driver_type) {
+       case AZX_DRIVER_VIA:
+       case AZX_DRIVER_ATI:
+               chip->via_dmapos_patch = 1;
+               /* Use link position directly, avoid any transfer problem. */
+               return POS_FIX_LPIB;
+       }
+       chip->via_dmapos_patch = 0;
+
+       q = snd_pci_quirk_lookup(chip->pci, position_fix_list);
+       if (q) {
+               printk(KERN_INFO
+                      "hda_intel: position_fix set to %d "
+                      "for device %04x:%04x\n",
+                      q->value, q->subvendor, q->subdevice);
+               return q->value;
+       }
+       return POS_FIX_AUTO;
 }
 
 /*
@@ -1679,23 +2344,78 @@ static struct snd_pci_quirk probe_mask_list[] __devinitdata = {
        SND_PCI_QUIRK(0x1014, 0x05b7, "Thinkpad Z60", 0x01),
        SND_PCI_QUIRK(0x17aa, 0x2010, "Thinkpad X/T/R60", 0x01),
        SND_PCI_QUIRK(0x17aa, 0x20ac, "Thinkpad X/T/R61", 0x01),
+       /* broken BIOS */
+       SND_PCI_QUIRK(0x1028, 0x20ac, "Dell Studio Desktop", 0x01),
+       /* including bogus ALC268 in slot#2 that conflicts with ALC888 */
+       SND_PCI_QUIRK(0x17c0, 0x4085, "Medion MD96630", 0x01),
+       /* forced codec slots */
+       SND_PCI_QUIRK(0x1043, 0x1262, "ASUS W5Fm", 0x103),
+       SND_PCI_QUIRK(0x1046, 0x1262, "ASUS W5F", 0x103),
        {}
 };
 
-static void __devinit check_probe_mask(struct azx *chip)
+#define AZX_FORCE_CODEC_MASK   0x100
+
+static void __devinit check_probe_mask(struct azx *chip, int dev)
 {
        const struct snd_pci_quirk *q;
 
-       if (probe_mask == -1) {
+       chip->codec_probe_mask = probe_mask[dev];
+       if (chip->codec_probe_mask == -1) {
                q = snd_pci_quirk_lookup(chip->pci, probe_mask_list);
                if (q) {
                        printk(KERN_INFO
                               "hda_intel: probe_mask set to 0x%x "
                               "for device %04x:%04x\n",
                               q->value, q->subvendor, q->subdevice);
-                       probe_mask = q->value;
+                       chip->codec_probe_mask = q->value;
                }
        }
+
+       /* check forced option */
+       if (chip->codec_probe_mask != -1 &&
+           (chip->codec_probe_mask & AZX_FORCE_CODEC_MASK)) {
+               chip->codec_mask = chip->codec_probe_mask & 0xff;
+               printk(KERN_INFO "hda_intel: codec_mask forced to 0x%x\n",
+                      chip->codec_mask);
+       }
+}
+
+/*
+ * white/black-list for enable_msi
+ */
+static struct snd_pci_quirk msi_black_list[] __devinitdata = {
+       SND_PCI_QUIRK(0x1043, 0x81f2, "ASUS", 0), /* Athlon64 X2 + nvidia */
+       SND_PCI_QUIRK(0x1043, 0x81f6, "ASUS", 0), /* nvidia */
+       SND_PCI_QUIRK(0x1043, 0x822d, "ASUS", 0), /* Athlon64 X2 + nvidia MCP55 */
+       SND_PCI_QUIRK(0x1849, 0x0888, "ASRock", 0), /* Athlon64 X2 + nvidia */
+       SND_PCI_QUIRK(0xa0a0, 0x0575, "Aopen MZ915-M", 0), /* ICH6 */
+       {}
+};
+
+static void __devinit check_msi(struct azx *chip)
+{
+       const struct snd_pci_quirk *q;
+
+       if (enable_msi >= 0) {
+               chip->msi = !!enable_msi;
+               return;
+       }
+       chip->msi = 1;  /* enable MSI as default */
+       q = snd_pci_quirk_lookup(chip->pci, msi_black_list);
+       if (q) {
+               printk(KERN_INFO
+                      "hda_intel: msi for device %04x:%04x set to %d\n",
+                      q->subvendor, q->subdevice, q->value);
+               chip->msi = q->value;
+               return;
+       }
+
+       /* NVidia chipsets seem to cause troubles with MSI */
+       if (chip->driver_type == AZX_DRIVER_NVIDIA) {
+               printk(KERN_INFO "hda_intel: Disable MSI for Nvidia chipset\n");
+               chip->msi = 0;
+       }
 }
 
 
@@ -1703,17 +2423,18 @@ static void __devinit check_probe_mask(struct azx *chip)
  * constructor
  */
 static int __devinit azx_create(struct snd_card *card, struct pci_dev *pci,
-                               int driver_type,
+                               int dev, int driver_type,
                                struct azx **rchip)
 {
        struct azx *chip;
-       int err;
+       int i, err;
+       unsigned short gcap;
        static struct snd_device_ops ops = {
                .dev_free = azx_dev_free,
        };
 
        *rchip = NULL;
-       
+
        err = pci_enable_device(pci);
        if (err < 0)
                return err;
@@ -1731,13 +2452,28 @@ static int __devinit azx_create(struct snd_card *card, struct pci_dev *pci,
        chip->pci = pci;
        chip->irq = -1;
        chip->driver_type = driver_type;
-       chip->msi = enable_msi;
+       check_msi(chip);
+       chip->dev_index = dev;
+       INIT_WORK(&chip->irq_pending_work, azx_irq_pending_work);
 
-       chip->position_fix = check_position_fix(chip, position_fix);
-       check_probe_mask(chip);
+       chip->position_fix[0] = chip->position_fix[1] =
+               check_position_fix(chip, position_fix[dev]);
+       check_probe_mask(chip, dev);
 
        chip->single_cmd = single_cmd;
 
+       if (bdl_pos_adj[dev] < 0) {
+               switch (chip->driver_type) {
+               case AZX_DRIVER_ICH:
+               case AZX_DRIVER_PCH:
+                       bdl_pos_adj[dev] = 1;
+                       break;
+               default:
+                       bdl_pos_adj[dev] = 32;
+                       break;
+               }
+       }
+
 #if BITS_PER_LONG != 64
        /* Fix up base address on ULI M5461 */
        if (chip->driver_type == AZX_DRIVER_ULI) {
@@ -1756,7 +2492,7 @@ static int __devinit azx_create(struct snd_card *card, struct pci_dev *pci,
        }
 
        chip->addr = pci_resource_start(pci, 0);
-       chip->remap_addr = ioremap_nocache(chip->addr, pci_resource_len(pci,0));
+       chip->remap_addr = pci_ioremap_bar(pci, 0);
        if (chip->remap_addr == NULL) {
                snd_printk(KERN_ERR SFX "ioremap error\n");
                err = -ENXIO;
@@ -1775,41 +2511,79 @@ static int __devinit azx_create(struct snd_card *card, struct pci_dev *pci,
        pci_set_master(pci);
        synchronize_irq(chip->irq);
 
-       switch (chip->driver_type) {
-       case AZX_DRIVER_ULI:
-               chip->playback_streams = ULI_NUM_PLAYBACK;
-               chip->capture_streams = ULI_NUM_CAPTURE;
-               chip->playback_index_offset = ULI_PLAYBACK_INDEX;
-               chip->capture_index_offset = ULI_CAPTURE_INDEX;
-               break;
-       case AZX_DRIVER_ATIHDMI:
-               chip->playback_streams = ATIHDMI_NUM_PLAYBACK;
-               chip->capture_streams = ATIHDMI_NUM_CAPTURE;
-               chip->playback_index_offset = ATIHDMI_PLAYBACK_INDEX;
-               chip->capture_index_offset = ATIHDMI_CAPTURE_INDEX;
-               break;
-       default:
-               chip->playback_streams = ICH6_NUM_PLAYBACK;
-               chip->capture_streams = ICH6_NUM_CAPTURE;
-               chip->playback_index_offset = ICH6_PLAYBACK_INDEX;
-               chip->capture_index_offset = ICH6_CAPTURE_INDEX;
-               break;
+       gcap = azx_readw(chip, GCAP);
+       snd_printdd(SFX "chipset global capabilities = 0x%x\n", gcap);
+
+       /* disable SB600 64bit support for safety */
+       if ((chip->driver_type == AZX_DRIVER_ATI) ||
+           (chip->driver_type == AZX_DRIVER_ATIHDMI)) {
+               struct pci_dev *p_smbus;
+               p_smbus = pci_get_device(PCI_VENDOR_ID_ATI,
+                                        PCI_DEVICE_ID_ATI_SBX00_SMBUS,
+                                        NULL);
+               if (p_smbus) {
+                       if (p_smbus->revision < 0x30)
+                               gcap &= ~ICH6_GCAP_64OK;
+                       pci_dev_put(p_smbus);
+               }
+       }
+
+       /* disable 64bit DMA address for Teradici */
+       /* it does not work with device 6549:1200 subsys e4a2:040b */
+       if (chip->driver_type == AZX_DRIVER_TERA)
+               gcap &= ~ICH6_GCAP_64OK;
+
+       /* allow 64bit DMA address if supported by H/W */
+       if ((gcap & ICH6_GCAP_64OK) && !pci_set_dma_mask(pci, DMA_BIT_MASK(64)))
+               pci_set_consistent_dma_mask(pci, DMA_BIT_MASK(64));
+       else {
+               pci_set_dma_mask(pci, DMA_BIT_MASK(32));
+               pci_set_consistent_dma_mask(pci, DMA_BIT_MASK(32));
        }
+
+       /* read number of streams from GCAP register instead of using
+        * hardcoded value
+        */
+       chip->capture_streams = (gcap >> 8) & 0x0f;
+       chip->playback_streams = (gcap >> 12) & 0x0f;
+       if (!chip->playback_streams && !chip->capture_streams) {
+               /* gcap didn't give any info, switching to old method */
+
+               switch (chip->driver_type) {
+               case AZX_DRIVER_ULI:
+                       chip->playback_streams = ULI_NUM_PLAYBACK;
+                       chip->capture_streams = ULI_NUM_CAPTURE;
+                       break;
+               case AZX_DRIVER_ATIHDMI:
+                       chip->playback_streams = ATIHDMI_NUM_PLAYBACK;
+                       chip->capture_streams = ATIHDMI_NUM_CAPTURE;
+                       break;
+               case AZX_DRIVER_GENERIC:
+               default:
+                       chip->playback_streams = ICH6_NUM_PLAYBACK;
+                       chip->capture_streams = ICH6_NUM_CAPTURE;
+                       break;
+               }
+       }
+       chip->capture_index_offset = 0;
+       chip->playback_index_offset = chip->capture_streams;
        chip->num_streams = chip->playback_streams + chip->capture_streams;
        chip->azx_dev = kcalloc(chip->num_streams, sizeof(*chip->azx_dev),
                                GFP_KERNEL);
        if (!chip->azx_dev) {
-               snd_printk(KERN_ERR "cannot malloc azx_dev\n");
+               snd_printk(KERN_ERR SFX "cannot malloc azx_dev\n");
                goto errout;
        }
 
-       /* allocate memory for the BDL for each stream */
-       err = snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV,
-                                 snd_dma_pci_data(chip->pci),
-                                 BDL_SIZE, &chip->bdl);
-       if (err < 0) {
-               snd_printk(KERN_ERR SFX "cannot allocate BDL\n");
-               goto errout;
+       for (i = 0; i < chip->num_streams; i++) {
+               /* allocate memory for the BDL for each stream */
+               err = snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV,
+                                         snd_dma_pci_data(chip->pci),
+                                         BDL_SIZE, &chip->azx_dev[i].bdl);
+               if (err < 0) {
+                       snd_printk(KERN_ERR SFX "cannot allocate BDL\n");
+                       goto errout;
+               }
        }
        /* allocate memory for the position buffer */
        err = snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV,
@@ -1820,18 +2594,16 @@ static int __devinit azx_create(struct snd_card *card, struct pci_dev *pci,
                goto errout;
        }
        /* allocate CORB/RIRB */
-       if (!chip->single_cmd) {
-               err = azx_alloc_cmd_io(chip);
-               if (err < 0)
-                       goto errout;
-       }
+       err = azx_alloc_cmd_io(chip);
+       if (err < 0)
+               goto errout;
 
        /* initialize streams */
        azx_init_stream(chip);
 
        /* initialize chip */
        azx_init_pci(chip);
-       azx_init_chip(chip);
+       azx_init_chip(chip, (probe_only[dev] & 2) == 0);
 
        /* codec detection */
        if (!chip->codec_mask) {
@@ -1847,9 +2619,11 @@ static int __devinit azx_create(struct snd_card *card, struct pci_dev *pci,
        }
 
        strcpy(card->driver, "HDA-Intel");
-       strcpy(card->shortname, driver_short_names[chip->driver_type]);
-       sprintf(card->longname, "%s at 0x%lx irq %i",
-               card->shortname, chip->addr, chip->irq);
+       strlcpy(card->shortname, driver_short_names[chip->driver_type],
+               sizeof(card->shortname));
+       snprintf(card->longname, sizeof(card->longname),
+                "%s at 0x%lx irq %i",
+                card->shortname, chip->addr, chip->irq);
 
        *rchip = chip;
        return 0;
@@ -1875,56 +2649,78 @@ static void power_down_all_codecs(struct azx *chip)
 static int __devinit azx_probe(struct pci_dev *pci,
                               const struct pci_device_id *pci_id)
 {
+       static int dev;
        struct snd_card *card;
        struct azx *chip;
        int err;
 
-       card = snd_card_new(index, id, THIS_MODULE, 0);
-       if (!card) {
-               snd_printk(KERN_ERR SFX "Error creating card!\n");
-               return -ENOMEM;
+       if (dev >= SNDRV_CARDS)
+               return -ENODEV;
+       if (!enable[dev]) {
+               dev++;
+               return -ENOENT;
        }
 
-       err = azx_create(card, pci, pci_id->driver_data, &chip);
+       err = snd_card_create(index[dev], id[dev], THIS_MODULE, 0, &card);
        if (err < 0) {
-               snd_card_free(card);
+               snd_printk(KERN_ERR SFX "Error creating card!\n");
                return err;
        }
+
+       /* set this here since it's referred in snd_hda_load_patch() */
+       snd_card_set_dev(card, &pci->dev);
+
+       err = azx_create(card, pci, dev, pci_id->driver_data, &chip);
+       if (err < 0)
+               goto out_free;
        card->private_data = chip;
 
+#ifdef CONFIG_SND_HDA_INPUT_BEEP
+       chip->beep_mode = beep_mode[dev];
+#endif
+
        /* create codec instances */
-       err = azx_codec_create(chip, model);
-       if (err < 0) {
-               snd_card_free(card);
-               return err;
+       err = azx_codec_create(chip, model[dev]);
+       if (err < 0)
+               goto out_free;
+#ifdef CONFIG_SND_HDA_PATCH_LOADER
+       if (patch[dev]) {
+               snd_printk(KERN_ERR SFX "Applying patch firmware '%s'\n",
+                          patch[dev]);
+               err = snd_hda_load_patch(chip->bus, patch[dev]);
+               if (err < 0)
+                       goto out_free;
+       }
+#endif
+       if ((probe_only[dev] & 1) == 0) {
+               err = azx_codec_configure(chip);
+               if (err < 0)
+                       goto out_free;
        }
 
        /* create PCM streams */
-       err = azx_pcm_create(chip);
-       if (err < 0) {
-               snd_card_free(card);
-               return err;
-       }
+       err = snd_hda_build_pcms(chip->bus);
+       if (err < 0)
+               goto out_free;
 
        /* create mixer controls */
        err = azx_mixer_create(chip);
-       if (err < 0) {
-               snd_card_free(card);
-               return err;
-       }
-
-       snd_card_set_dev(card, &pci->dev);
+       if (err < 0)
+               goto out_free;
 
        err = snd_card_register(card);
-       if (err < 0) {
-               snd_card_free(card);
-               return err;
-       }
+       if (err < 0)
+               goto out_free;
 
        pci_set_drvdata(pci, card);
        chip->running = 1;
        power_down_all_codecs(chip);
+       azx_notifier_register(chip);
 
+       dev++;
+       return err;
+out_free:
+       snd_card_free(card);
        return err;
 }
 
@@ -1935,46 +2731,78 @@ static void __devexit azx_remove(struct pci_dev *pci)
 }
 
 /* PCI IDs */
-static struct pci_device_id azx_ids[] = {
-       { 0x8086, 0x2668, PCI_ANY_ID, PCI_ANY_ID, 0, 0, AZX_DRIVER_ICH }, /* ICH6 */
-       { 0x8086, 0x27d8, PCI_ANY_ID, PCI_ANY_ID, 0, 0, AZX_DRIVER_ICH }, /* ICH7 */
-       { 0x8086, 0x269a, PCI_ANY_ID, PCI_ANY_ID, 0, 0, AZX_DRIVER_ICH }, /* ESB2 */
-       { 0x8086, 0x284b, PCI_ANY_ID, PCI_ANY_ID, 0, 0, AZX_DRIVER_ICH }, /* ICH8 */
-       { 0x8086, 0x293e, PCI_ANY_ID, PCI_ANY_ID, 0, 0, AZX_DRIVER_ICH }, /* ICH9 */
-       { 0x8086, 0x293f, PCI_ANY_ID, PCI_ANY_ID, 0, 0, AZX_DRIVER_ICH }, /* ICH9 */
-       { 0x1002, 0x437b, PCI_ANY_ID, PCI_ANY_ID, 0, 0, AZX_DRIVER_ATI }, /* ATI SB450 */
-       { 0x1002, 0x4383, PCI_ANY_ID, PCI_ANY_ID, 0, 0, AZX_DRIVER_ATI }, /* ATI SB600 */
-       { 0x1002, 0x793b, PCI_ANY_ID, PCI_ANY_ID, 0, 0, AZX_DRIVER_ATIHDMI }, /* ATI RS600 HDMI */
-       { 0x1002, 0x7919, PCI_ANY_ID, PCI_ANY_ID, 0, 0, AZX_DRIVER_ATIHDMI }, /* ATI RS690 HDMI */
-       { 0x1002, 0x960f, PCI_ANY_ID, PCI_ANY_ID, 0, 0, AZX_DRIVER_ATIHDMI }, /* ATI RS780 HDMI */
-       { 0x1002, 0xaa00, PCI_ANY_ID, PCI_ANY_ID, 0, 0, AZX_DRIVER_ATIHDMI }, /* ATI R600 HDMI */
-       { 0x1002, 0xaa08, PCI_ANY_ID, PCI_ANY_ID, 0, 0, AZX_DRIVER_ATIHDMI }, /* ATI RV630 HDMI */
-       { 0x1002, 0xaa10, PCI_ANY_ID, PCI_ANY_ID, 0, 0, AZX_DRIVER_ATIHDMI }, /* ATI RV610 HDMI */
-       { 0x1002, 0xaa18, PCI_ANY_ID, PCI_ANY_ID, 0, 0, AZX_DRIVER_ATIHDMI }, /* ATI RV670 HDMI */
-       { 0x1002, 0xaa20, PCI_ANY_ID, PCI_ANY_ID, 0, 0, AZX_DRIVER_ATIHDMI }, /* ATI RV635 HDMI */
-       { 0x1002, 0xaa28, PCI_ANY_ID, PCI_ANY_ID, 0, 0, AZX_DRIVER_ATIHDMI }, /* ATI RV620 HDMI */
-       { 0x1002, 0xaa30, PCI_ANY_ID, PCI_ANY_ID, 0, 0, AZX_DRIVER_ATIHDMI }, /* ATI RV770 HDMI */
-       { 0x1106, 0x3288, PCI_ANY_ID, PCI_ANY_ID, 0, 0, AZX_DRIVER_VIA }, /* VIA VT8251/VT8237A */
-       { 0x1039, 0x7502, PCI_ANY_ID, PCI_ANY_ID, 0, 0, AZX_DRIVER_SIS }, /* SIS966 */
-       { 0x10b9, 0x5461, PCI_ANY_ID, PCI_ANY_ID, 0, 0, AZX_DRIVER_ULI }, /* ULI M5461 */
-       { 0x10de, 0x026c, PCI_ANY_ID, PCI_ANY_ID, 0, 0, AZX_DRIVER_NVIDIA }, /* NVIDIA MCP51 */
-       { 0x10de, 0x0371, PCI_ANY_ID, PCI_ANY_ID, 0, 0, AZX_DRIVER_NVIDIA }, /* NVIDIA MCP55 */
-       { 0x10de, 0x03e4, PCI_ANY_ID, PCI_ANY_ID, 0, 0, AZX_DRIVER_NVIDIA }, /* NVIDIA MCP61 */
-       { 0x10de, 0x03f0, PCI_ANY_ID, PCI_ANY_ID, 0, 0, AZX_DRIVER_NVIDIA }, /* NVIDIA MCP61 */
-       { 0x10de, 0x044a, PCI_ANY_ID, PCI_ANY_ID, 0, 0, AZX_DRIVER_NVIDIA }, /* NVIDIA MCP65 */
-       { 0x10de, 0x044b, PCI_ANY_ID, PCI_ANY_ID, 0, 0, AZX_DRIVER_NVIDIA }, /* NVIDIA MCP65 */
-       { 0x10de, 0x055c, PCI_ANY_ID, PCI_ANY_ID, 0, 0, AZX_DRIVER_NVIDIA }, /* NVIDIA MCP67 */
-       { 0x10de, 0x055d, PCI_ANY_ID, PCI_ANY_ID, 0, 0, AZX_DRIVER_NVIDIA }, /* NVIDIA MCP67 */
-       { 0x10de, 0x07fc, PCI_ANY_ID, PCI_ANY_ID, 0, 0, AZX_DRIVER_NVIDIA }, /* NVIDIA MCP73 */
-       { 0x10de, 0x07fd, PCI_ANY_ID, PCI_ANY_ID, 0, 0, AZX_DRIVER_NVIDIA }, /* NVIDIA MCP73 */
-       { 0x10de, 0x0774, PCI_ANY_ID, PCI_ANY_ID, 0, 0, AZX_DRIVER_NVIDIA }, /* NVIDIA MCP77 */
-       { 0x10de, 0x0775, PCI_ANY_ID, PCI_ANY_ID, 0, 0, AZX_DRIVER_NVIDIA }, /* NVIDIA MCP77 */
-       { 0x10de, 0x0776, PCI_ANY_ID, PCI_ANY_ID, 0, 0, AZX_DRIVER_NVIDIA }, /* NVIDIA MCP77 */
-       { 0x10de, 0x0777, PCI_ANY_ID, PCI_ANY_ID, 0, 0, AZX_DRIVER_NVIDIA }, /* NVIDIA MCP77 */
-       { 0x10de, 0x0ac0, PCI_ANY_ID, PCI_ANY_ID, 0, 0, AZX_DRIVER_NVIDIA }, /* NVIDIA MCP79 */
-       { 0x10de, 0x0ac1, PCI_ANY_ID, PCI_ANY_ID, 0, 0, AZX_DRIVER_NVIDIA }, /* NVIDIA MCP79 */
-       { 0x10de, 0x0ac2, PCI_ANY_ID, PCI_ANY_ID, 0, 0, AZX_DRIVER_NVIDIA }, /* NVIDIA MCP79 */
-       { 0x10de, 0x0ac3, PCI_ANY_ID, PCI_ANY_ID, 0, 0, AZX_DRIVER_NVIDIA }, /* NVIDIA MCP79 */
+static DEFINE_PCI_DEVICE_TABLE(azx_ids) = {
+       /* ICH 6..10 */
+       { PCI_DEVICE(0x8086, 0x2668), .driver_data = AZX_DRIVER_ICH },
+       { PCI_DEVICE(0x8086, 0x27d8), .driver_data = AZX_DRIVER_ICH },
+       { PCI_DEVICE(0x8086, 0x269a), .driver_data = AZX_DRIVER_ICH },
+       { PCI_DEVICE(0x8086, 0x284b), .driver_data = AZX_DRIVER_ICH },
+       { PCI_DEVICE(0x8086, 0x2911), .driver_data = AZX_DRIVER_ICH },
+       { PCI_DEVICE(0x8086, 0x293e), .driver_data = AZX_DRIVER_ICH },
+       { PCI_DEVICE(0x8086, 0x293f), .driver_data = AZX_DRIVER_ICH },
+       { PCI_DEVICE(0x8086, 0x3a3e), .driver_data = AZX_DRIVER_ICH },
+       { PCI_DEVICE(0x8086, 0x3a6e), .driver_data = AZX_DRIVER_ICH },
+       /* PCH */
+       { PCI_DEVICE(0x8086, 0x3b56), .driver_data = AZX_DRIVER_ICH },
+       { PCI_DEVICE(0x8086, 0x3b57), .driver_data = AZX_DRIVER_ICH },
+       /* CPT */
+       { PCI_DEVICE(0x8086, 0x1c20), .driver_data = AZX_DRIVER_PCH },
+       /* SCH */
+       { PCI_DEVICE(0x8086, 0x811b), .driver_data = AZX_DRIVER_SCH },
+       /* ATI SB 450/600 */
+       { PCI_DEVICE(0x1002, 0x437b), .driver_data = AZX_DRIVER_ATI },
+       { PCI_DEVICE(0x1002, 0x4383), .driver_data = AZX_DRIVER_ATI },
+       /* ATI HDMI */
+       { PCI_DEVICE(0x1002, 0x793b), .driver_data = AZX_DRIVER_ATIHDMI },
+       { PCI_DEVICE(0x1002, 0x7919), .driver_data = AZX_DRIVER_ATIHDMI },
+       { PCI_DEVICE(0x1002, 0x960f), .driver_data = AZX_DRIVER_ATIHDMI },
+       { PCI_DEVICE(0x1002, 0x970f), .driver_data = AZX_DRIVER_ATIHDMI },
+       { PCI_DEVICE(0x1002, 0xaa00), .driver_data = AZX_DRIVER_ATIHDMI },
+       { PCI_DEVICE(0x1002, 0xaa08), .driver_data = AZX_DRIVER_ATIHDMI },
+       { PCI_DEVICE(0x1002, 0xaa10), .driver_data = AZX_DRIVER_ATIHDMI },
+       { PCI_DEVICE(0x1002, 0xaa18), .driver_data = AZX_DRIVER_ATIHDMI },
+       { PCI_DEVICE(0x1002, 0xaa20), .driver_data = AZX_DRIVER_ATIHDMI },
+       { PCI_DEVICE(0x1002, 0xaa28), .driver_data = AZX_DRIVER_ATIHDMI },
+       { PCI_DEVICE(0x1002, 0xaa30), .driver_data = AZX_DRIVER_ATIHDMI },
+       { PCI_DEVICE(0x1002, 0xaa38), .driver_data = AZX_DRIVER_ATIHDMI },
+       { PCI_DEVICE(0x1002, 0xaa40), .driver_data = AZX_DRIVER_ATIHDMI },
+       { PCI_DEVICE(0x1002, 0xaa48), .driver_data = AZX_DRIVER_ATIHDMI },
+       /* VIA VT8251/VT8237A */
+       { PCI_DEVICE(0x1106, 0x3288), .driver_data = AZX_DRIVER_VIA },
+       /* SIS966 */
+       { PCI_DEVICE(0x1039, 0x7502), .driver_data = AZX_DRIVER_SIS },
+       /* ULI M5461 */
+       { PCI_DEVICE(0x10b9, 0x5461), .driver_data = AZX_DRIVER_ULI },
+       /* NVIDIA MCP */
+       { PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_ANY_ID),
+         .class = PCI_CLASS_MULTIMEDIA_HD_AUDIO << 8,
+         .class_mask = 0xffffff,
+         .driver_data = AZX_DRIVER_NVIDIA },
+       /* Teradici */
+       { PCI_DEVICE(0x6549, 0x1200), .driver_data = AZX_DRIVER_TERA },
+       /* Creative X-Fi (CA0110-IBG) */
+#if !defined(CONFIG_SND_CTXFI) && !defined(CONFIG_SND_CTXFI_MODULE)
+       /* the following entry conflicts with snd-ctxfi driver,
+        * as ctxfi driver mutates from HD-audio to native mode with
+        * a special command sequence.
+        */
+       { PCI_DEVICE(PCI_VENDOR_ID_CREATIVE, PCI_ANY_ID),
+         .class = PCI_CLASS_MULTIMEDIA_HD_AUDIO << 8,
+         .class_mask = 0xffffff,
+         .driver_data = AZX_DRIVER_GENERIC },
+#else
+       /* this entry seems still valid -- i.e. without emu20kx chip */
+       { PCI_DEVICE(0x1102, 0x0009), .driver_data = AZX_DRIVER_GENERIC },
+#endif
+       /* AMD/ATI Generic, PCI class code and Vendor ID for HD Audio */
+       { PCI_DEVICE(PCI_VENDOR_ID_ATI, PCI_ANY_ID),
+         .class = PCI_CLASS_MULTIMEDIA_HD_AUDIO << 8,
+         .class_mask = 0xffffff,
+         .driver_data = AZX_DRIVER_GENERIC },
+       { PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_ANY_ID),
+         .class = PCI_CLASS_MULTIMEDIA_HD_AUDIO << 8,
+         .class_mask = 0xffffff,
+         .driver_data = AZX_DRIVER_GENERIC },
        { 0, }
 };
 MODULE_DEVICE_TABLE(pci, azx_ids);