Merge commit 'v2.6.33-rc2' into for-2.6.33

6 files changed, 70 insertions, 223 deletions

diff --git a/sound/arm/Makefile b/sound/arm/Makefile
index 5a549ed6c8aa..8c0c851d4641 100644
--- a/sound/arm/Makefile
+++ b/sound/arm/Makefile
@@ -3,7 +3,7 @@
 #
 
 obj-$(CONFIG_SND_ARMAACI)       += snd-aaci.o
-snd-aaci-objs                   := aaci.o devdma.o
+snd-aaci-objs                   := aaci.o
 
 obj-$(CONFIG_SND_PXA2XX_PCM)    += snd-pxa2xx-pcm.o
 snd-pxa2xx-pcm-objs             := pxa2xx-pcm.o
diff --git a/sound/arm/aaci.c b/sound/arm/aaci.c
index 1f0f8213e2d5..c5699863643b 100644
--- a/sound/arm/aaci.c
+++ b/sound/arm/aaci.c
@@ -18,10 +18,7 @@
 #include <linux/interrupt.h>
 #include <linux/err.h>
 #include <linux/amba/bus.h>
-
-#include <asm/io.h>
-#include <asm/irq.h>
-#include <asm/sizes.h>
+#include <linux/io.h>
 
 #include <sound/core.h>
 #include <sound/initval.h>
@@ -30,7 +27,6 @@
 #include <sound/pcm_params.h>
 
 #include "aaci.h"
-#include "devdma.h"
 
 #define DRIVER_NAME     "aaci-pl041"
 
@@ -176,14 +172,15 @@ static unsigned short aaci_ac97_read(struct snd_ac97 *ac97, unsigned short reg)
         return v;
 }
 
-static inline void aaci_chan_wait_ready(struct aaci_runtime *aacirun)
+static inline void
+aaci_chan_wait_ready(struct aaci_runtime *aacirun, unsigned long mask)
 {
         u32 val;
         int timeout = 5000;
 
         do {
                 val = readl(aacirun->base + AACI_SR);
-        } while (val & (SR_TXB|SR_RXB) && timeout--);
+        } while (val & mask && timeout--);
 }
 
 
@@ -212,8 +209,10 @@ static void aaci_fifo_irq(struct aaci *aaci, int channel, u32 mask)
                         writel(0, aacirun->base + AACI_IE);
                         return;
                 }
-                ptr = aacirun->ptr;
 
+                spin_lock(&aacirun->lock);
+
+                ptr = aacirun->ptr;
                 do {
                         unsigned int len = aacirun->fifosz;
                         u32 val;
@@ -221,9 +220,9 @@ static void aaci_fifo_irq(struct aaci *aaci, int channel, u32 mask)
                         if (aacirun->bytes <= 0) {
                                 aacirun->bytes += aacirun->period;
                                 aacirun->ptr = ptr;
-                                spin_unlock(&aaci->lock);
+                                spin_unlock(&aacirun->lock);
                                 snd_pcm_period_elapsed(aacirun->substream);
-                                spin_lock(&aaci->lock);
+                                spin_lock(&aacirun->lock);
                         }
                         if (!(aacirun->cr & CR_EN))
                                 break;
@@ -249,7 +248,10 @@ static void aaci_fifo_irq(struct aaci *aaci, int channel, u32 mask)
                                         ptr = aacirun->start;
                         }
                 } while(1);
+
                 aacirun->ptr = ptr;
+
+                spin_unlock(&aacirun->lock);
         }
 
         if (mask & ISR_URINTR) {
@@ -267,6 +269,8 @@ static void aaci_fifo_irq(struct aaci *aaci, int channel, u32 mask)
                         return;
                 }
 
+                spin_lock(&aacirun->lock);
+
                 ptr = aacirun->ptr;
                 do {
                         unsigned int len = aacirun->fifosz;
@@ -275,9 +279,9 @@ static void aaci_fifo_irq(struct aaci *aaci, int channel, u32 mask)
                         if (aacirun->bytes <= 0) {
                                 aacirun->bytes += aacirun->period;
                                 aacirun->ptr = ptr;
-                                spin_unlock(&aaci->lock);
+                                spin_unlock(&aacirun->lock);
                                 snd_pcm_period_elapsed(aacirun->substream);
-                                spin_lock(&aaci->lock);
+                                spin_lock(&aacirun->lock);
                         }
                         if (!(aacirun->cr & CR_EN))
                                 break;
@@ -305,6 +309,8 @@ static void aaci_fifo_irq(struct aaci *aaci, int channel, u32 mask)
                 } while (1);
 
                 aacirun->ptr = ptr;
+
+                spin_unlock(&aacirun->lock);
         }
 }
 
@@ -314,7 +320,6 @@ static irqreturn_t aaci_irq(int irq, void *devid)
         u32 mask;
         int i;
 
-        spin_lock(&aaci->lock);
         mask = readl(aaci->base + AACI_ALLINTS);
         if (mask) {
                 u32 m = mask;
@@ -324,7 +329,6 @@ static irqreturn_t aaci_irq(int irq, void *devid)
                         }
                 }
         }
-        spin_unlock(&aaci->lock);
 
         return mask ? IRQ_HANDLED : IRQ_NONE;
 }
@@ -334,63 +338,6 @@ static irqreturn_t aaci_irq(int irq, void *devid)
 /*
  * ALSA support.
  */
-
-struct aaci_stream {
-        unsigned char codec_idx;
-        unsigned char rate_idx;
-};
-
-static struct aaci_stream aaci_streams[] = {
-        [ACSTREAM_FRONT] = {
-                .codec_idx      = 0,
-                .rate_idx       = AC97_RATES_FRONT_DAC,
-        },
-        [ACSTREAM_SURROUND] = {
-                .codec_idx      = 0,
-                .rate_idx       = AC97_RATES_SURR_DAC,
-        },
-        [ACSTREAM_LFE] = {
-                .codec_idx      = 0,
-                .rate_idx       = AC97_RATES_LFE_DAC,
-        },
-};
-
-static inline unsigned int aaci_rate_mask(struct aaci *aaci, int streamid)
-{
-        struct aaci_stream *s = aaci_streams + streamid;
-        return aaci->ac97_bus->codec[s->codec_idx]->rates[s->rate_idx];
-}
-
-static unsigned int rate_list[] = {
-        5512, 8000, 11025, 16000, 22050, 32000, 44100,
-        48000, 64000, 88200, 96000, 176400, 192000
-};
-
-/*
- * Double-rate rule: we can support double rate iff channels == 2
- *  (unimplemented)
- */
-static int
-aaci_rule_rate_by_channels(struct snd_pcm_hw_params *p, struct snd_pcm_hw_rule *rule)
-{
-        struct aaci *aaci = rule->private;
-        unsigned int rate_mask = SNDRV_PCM_RATE_8000_48000|SNDRV_PCM_RATE_5512;
-        struct snd_interval *c = hw_param_interval(p, SNDRV_PCM_HW_PARAM_CHANNELS);
-
-        switch (c->max) {
-        case 6:
-                rate_mask &= aaci_rate_mask(aaci, ACSTREAM_LFE);
-        case 4:
-                rate_mask &= aaci_rate_mask(aaci, ACSTREAM_SURROUND);
-        case 2:
-                rate_mask &= aaci_rate_mask(aaci, ACSTREAM_FRONT);
-        }
-
-        return snd_interval_list(hw_param_interval(p, rule->var),
-                                 ARRAY_SIZE(rate_list), rate_list,
-                                 rate_mask);
-}
-
 static struct snd_pcm_hardware aaci_hw_info = {
         .info                   = SNDRV_PCM_INFO_MMAP |
                                   SNDRV_PCM_INFO_MMAP_VALID |
@@ -404,10 +351,7 @@ static struct snd_pcm_hardware aaci_hw_info = {
          */
         .formats                = SNDRV_PCM_FMTBIT_S16_LE,
 
-        /* should this be continuous or knot? */
-        .rates                  = SNDRV_PCM_RATE_CONTINUOUS,
-        .rate_max               = 48000,
-        .rate_min               = 4000,
+        /* rates are setup from the AC'97 codec */
         .channels_min           = 2,
         .channels_max           = 6,
         .buffer_bytes_max       = 64 * 1024,
@@ -427,6 +371,12 @@ static int __aaci_pcm_open(struct aaci *aaci,
         aacirun->substream = substream;
         runtime->private_data = aacirun;
         runtime->hw = aaci_hw_info;
+        runtime->hw.rates = aacirun->pcm->rates;
+        snd_pcm_limit_hw_rates(runtime);
+
+        if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK &&
+            aacirun->pcm->r[1].slots)
+                snd_ac97_pcm_double_rate_rules(runtime);
 
         /*
          * FIXME: ALSA specifies fifo_size in bytes.  If we're in normal
@@ -437,17 +387,6 @@ static int __aaci_pcm_open(struct aaci *aaci,
          */
         runtime->hw.fifo_size = aaci->fifosize * 2;
 
-        /*
-         * Add rule describing hardware rate dependency
-         * on the number of channels.
-         */
-        ret = snd_pcm_hw_rule_add(runtime, 0, SNDRV_PCM_HW_PARAM_RATE,
-                                  aaci_rule_rate_by_channels, aaci,
-                                  SNDRV_PCM_HW_PARAM_CHANNELS,
-                                  SNDRV_PCM_HW_PARAM_RATE, -1);
-        if (ret)
-                goto out;
-
         ret = request_irq(aaci->dev->irq[0], aaci_irq, IRQF_SHARED|IRQF_DISABLED,
                           DRIVER_NAME, aaci);
         if (ret)
@@ -492,7 +431,7 @@ static int aaci_pcm_hw_free(struct snd_pcm_substream *substream)
         /*
          * Clear out the DMA and any allocated buffers.
          */
-        devdma_hw_free(NULL, substream);
+        snd_pcm_lib_free_pages(substream);
 
         return 0;
 }
@@ -504,27 +443,29 @@ static int aaci_pcm_hw_params(struct snd_pcm_substream *substream,
         int err;
 
         aaci_pcm_hw_free(substream);
+        if (aacirun->pcm_open) {
+                snd_ac97_pcm_close(aacirun->pcm);
+                aacirun->pcm_open = 0;
+        }
 
-        err = devdma_hw_alloc(NULL, substream,
-                              params_buffer_bytes(params));
-        if (err < 0)
-                goto out;
+        err = snd_pcm_lib_malloc_pages(substream,
+                                       params_buffer_bytes(params));
+        if (err >= 0) {
+                unsigned int rate = params_rate(params);
+                int dbl = rate > 48000;
 
-        if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
-                err = snd_ac97_pcm_open(aacirun->pcm, params_rate(params),
-                                        params_channels(params),
-                                        aacirun->pcm->r[0].slots);
-        else
-                err = snd_ac97_pcm_open(aacirun->pcm, params_rate(params),
+                err = snd_ac97_pcm_open(aacirun->pcm, rate,
                                         params_channels(params),
-                                        aacirun->pcm->r[1].slots);
+                                        aacirun->pcm->r[dbl].slots);
 
-        if (err)
-                goto out;
+                aacirun->pcm_open = err == 0;
+                aacirun->cr = CR_FEN | CR_COMPACT | CR_SZ16;
+                aacirun->fifosz = aaci->fifosize * 4;
 
-        aacirun->pcm_open = 1;
+                if (aacirun->cr & CR_COMPACT)
+                        aacirun->fifosz >>= 1;
+        }
 
- out:
         return err;
 }
 
@@ -533,8 +474,8 @@ static int aaci_pcm_prepare(struct snd_pcm_substream *substream)
         struct snd_pcm_runtime *runtime = substream->runtime;
         struct aaci_runtime *aacirun = runtime->private_data;
 
-        aacirun->start  = (void *)runtime->dma_area;
-        aacirun->end    = aacirun->start + runtime->dma_bytes;
+        aacirun->start  = runtime->dma_area;
+        aacirun->end    = aacirun->start + snd_pcm_lib_buffer_bytes(substream);
         aacirun->ptr    = aacirun->start;
         aacirun->period =
         aacirun->bytes  = frames_to_bytes(runtime, runtime->period_size);
@@ -551,11 +492,6 @@ static snd_pcm_uframes_t aaci_pcm_pointer(struct snd_pcm_substream *substream)
         return bytes_to_frames(runtime, bytes);
 }
 
-static int aaci_pcm_mmap(struct snd_pcm_substream *substream, struct vm_area_struct *vma)
-{
-        return devdma_mmap(NULL, substream, vma);
-}
-
 
 /*
  * Playback specific ALSA stuff
@@ -638,14 +574,9 @@ static int aaci_pcm_playback_hw_params(struct snd_pcm_substream *substream,
          * Enable FIFO, compact mode, 16 bits per sample.
          * FIXME: double rate slots?
          */
-        if (ret >= 0) {
-                aacirun->cr = CR_FEN | CR_COMPACT | CR_SZ16;
+        if (ret >= 0)
                 aacirun->cr |= channels_to_txmask[channels];
 
-                aacirun->fifosz = aaci->fifosize * 4;
-                if (aacirun->cr & CR_COMPACT)
-                        aacirun->fifosz >>= 1;
-        }
         return ret;
 }
 
@@ -657,7 +588,7 @@ static void aaci_pcm_playback_stop(struct aaci_runtime *aacirun)
         ie &= ~(IE_URIE|IE_TXIE);
         writel(ie, aacirun->base + AACI_IE);
         aacirun->cr &= ~CR_EN;
-        aaci_chan_wait_ready(aacirun);
+        aaci_chan_wait_ready(aacirun, SR_TXB);
         writel(aacirun->cr, aacirun->base + AACI_TXCR);
 }
 
@@ -665,7 +596,7 @@ static void aaci_pcm_playback_start(struct aaci_runtime *aacirun)
 {
         u32 ie;
 
-        aaci_chan_wait_ready(aacirun);
+        aaci_chan_wait_ready(aacirun, SR_TXB);
         aacirun->cr |= CR_EN;
 
         ie = readl(aacirun->base + AACI_IE);
@@ -676,12 +607,12 @@ static void aaci_pcm_playback_start(struct aaci_runtime *aacirun)
 
 static int aaci_pcm_playback_trigger(struct snd_pcm_substream *substream, int cmd)
 {
-        struct aaci *aaci = substream->private_data;
         struct aaci_runtime *aacirun = substream->runtime->private_data;
         unsigned long flags;
         int ret = 0;
 
-        spin_lock_irqsave(&aaci->lock, flags);
+        spin_lock_irqsave(&aacirun->lock, flags);
+
         switch (cmd) {
         case SNDRV_PCM_TRIGGER_START:
                 aaci_pcm_playback_start(aacirun);
@@ -708,7 +639,8 @@ static int aaci_pcm_playback_trigger(struct snd_pcm_substream *substream, int cm
         default:
                 ret = -EINVAL;
         }
-        spin_unlock_irqrestore(&aaci->lock, flags);
+
+        spin_unlock_irqrestore(&aacirun->lock, flags);
 
         return ret;
 }
@@ -722,7 +654,6 @@ static struct snd_pcm_ops aaci_playback_ops = {
         .prepare        = aaci_pcm_prepare,
         .trigger        = aaci_pcm_playback_trigger,
         .pointer        = aaci_pcm_pointer,
-        .mmap           = aaci_pcm_mmap,
 };
 
 static int aaci_pcm_capture_hw_params(struct snd_pcm_substream *substream,
@@ -733,18 +664,10 @@ static int aaci_pcm_capture_hw_params(struct snd_pcm_substream *substream,
         int ret;
 
         ret = aaci_pcm_hw_params(substream, aacirun, params);
-
-        if (ret >= 0) {
-                aacirun->cr = CR_FEN | CR_COMPACT | CR_SZ16;
-
+        if (ret >= 0)
                 /* Line in record: slot 3 and 4 */
                 aacirun->cr |= CR_SL3 | CR_SL4;
 
-                aacirun->fifosz = aaci->fifosize * 4;
-
-                if (aacirun->cr & CR_COMPACT)
-                        aacirun->fifosz >>= 1;
-        }
         return ret;
 }
 
@@ -752,7 +675,7 @@ static void aaci_pcm_capture_stop(struct aaci_runtime *aacirun)
 {
         u32 ie;
 
-        aaci_chan_wait_ready(aacirun);
+        aaci_chan_wait_ready(aacirun, SR_RXB);
 
         ie = readl(aacirun->base + AACI_IE);
         ie &= ~(IE_ORIE | IE_RXIE);
@@ -767,7 +690,7 @@ static void aaci_pcm_capture_start(struct aaci_runtime *aacirun)
 {
         u32 ie;
 
-        aaci_chan_wait_ready(aacirun);
+        aaci_chan_wait_ready(aacirun, SR_RXB);
 
 #ifdef DEBUG
         /* RX Timeout value: bits 28:17 in RXCR */
@@ -784,12 +707,11 @@ static void aaci_pcm_capture_start(struct aaci_runtime *aacirun)
 
 static int aaci_pcm_capture_trigger(struct snd_pcm_substream *substream, int cmd)
 {
-        struct aaci *aaci = substream->private_data;
         struct aaci_runtime *aacirun = substream->runtime->private_data;
         unsigned long flags;
         int ret = 0;
 
-        spin_lock_irqsave(&aaci->lock, flags);
+        spin_lock_irqsave(&aacirun->lock, flags);
 
         switch (cmd) {
         case SNDRV_PCM_TRIGGER_START:
@@ -818,7 +740,7 @@ static int aaci_pcm_capture_trigger(struct snd_pcm_substream *substream, int cmd
                 ret = -EINVAL;
         }
 
-        spin_unlock_irqrestore(&aaci->lock, flags);
+        spin_unlock_irqrestore(&aacirun->lock, flags);
 
         return ret;
 }
@@ -850,7 +772,6 @@ static struct snd_pcm_ops aaci_capture_ops = {
         .prepare        = aaci_pcm_capture_prepare,
         .trigger        = aaci_pcm_capture_trigger,
         .pointer        = aaci_pcm_pointer,
-        .mmap           = aaci_pcm_mmap,
 };
 
 /*
@@ -902,6 +823,12 @@ static struct ac97_pcm ac97_defs[] __devinitdata = {
                                           (1 << AC97_SLOT_PCM_SRIGHT) |
                                           (1 << AC97_SLOT_LFE),
                         },
+                        [1] = {
+                                .slots  = (1 << AC97_SLOT_PCM_LEFT) |
+                                          (1 << AC97_SLOT_PCM_RIGHT) |
+                                          (1 << AC97_SLOT_PCM_LEFT_0) |
+                                          (1 << AC97_SLOT_PCM_RIGHT_0),
+                        },
                 },
         },
         [1] = { /* PCM in */
@@ -1014,7 +941,6 @@ static struct aaci * __devinit aaci_init_card(struct amba_device *dev)
 
         aaci = card->private_data;
         mutex_init(&aaci->ac97_sem);
-        spin_lock_init(&aaci->lock);
         aaci->card = card;
         aaci->dev = dev;
 
@@ -1040,6 +966,8 @@ static int __devinit aaci_init_pcm(struct aaci *aaci)
 
                 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &aaci_playback_ops);
                 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &aaci_capture_ops);
+                snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV,
+                                                      NULL, 0, 64 * 1024);
         }
 
         return ret;
@@ -1099,12 +1027,14 @@ static int __devinit aaci_probe(struct amba_device *dev, struct amba_id *id)
         /*
          * Playback uses AACI channel 0
          */
+        spin_lock_init(&aaci->playback.lock);
         aaci->playback.base = aaci->base + AACI_CSCH1;
         aaci->playback.fifo = aaci->base + AACI_DR1;
 
         /*
          * Capture uses AACI channel 0
          */
+        spin_lock_init(&aaci->capture.lock);
         aaci->capture.base = aaci->base + AACI_CSCH1;
         aaci->capture.fifo = aaci->base + AACI_DR1;
 
diff --git a/sound/arm/aaci.h b/sound/arm/aaci.h
index 924f69c1c44c..6a4a2eebdda1 100644
--- a/sound/arm/aaci.h
+++ b/sound/arm/aaci.h
@@ -202,6 +202,7 @@
 struct aaci_runtime {
         void                    __iomem *base;
         void                    __iomem *fifo;
+        spinlock_t              lock;
 
         struct ac97_pcm         *pcm;
         int                     pcm_open;
@@ -232,7 +233,6 @@ struct aaci {
         struct snd_ac97         *ac97;
 
         u32                     maincr;
-        spinlock_t              lock;
 
         struct aaci_runtime     playback;
         struct aaci_runtime     capture;
diff --git a/sound/arm/devdma.c b/sound/arm/devdma.c
deleted file mode 100644
index 9d1e6665b546..000000000000
--- a/sound/arm/devdma.c
+++ /dev/null
@@ -1,80 +0,0 @@
-/*
- *  linux/sound/arm/devdma.c
- *
- *  Copyright (C) 2003-2004 Russell King, All rights reserved.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- *
- *  ARM DMA shim for ALSA.
- */
-#include <linux/device.h>
-#include <linux/dma-mapping.h>
-
-#include <sound/core.h>
-#include <sound/pcm.h>
-
-#include "devdma.h"
-
-void devdma_hw_free(struct device *dev, struct snd_pcm_substream *substream)
-{
-        struct snd_pcm_runtime *runtime = substream->runtime;
-        struct snd_dma_buffer *buf = runtime->dma_buffer_p;
-
-        if (runtime->dma_area == NULL)
-                return;
-
-        if (buf != &substream->dma_buffer) {
-                dma_free_coherent(buf->dev.dev, buf->bytes, buf->area, buf->addr);
-                kfree(runtime->dma_buffer_p);
-        }
-
-        snd_pcm_set_runtime_buffer(substream, NULL);
-}
-
-int devdma_hw_alloc(struct device *dev, struct snd_pcm_substream *substream, size_t size)
-{
-        struct snd_pcm_runtime *runtime = substream->runtime;
-        struct snd_dma_buffer *buf = runtime->dma_buffer_p;
-        int ret = 0;
-
-        if (buf) {
-                if (buf->bytes >= size)
-                        goto out;
-                devdma_hw_free(dev, substream);
-        }
-
-        if (substream->dma_buffer.area != NULL && substream->dma_buffer.bytes >= size) {
-                buf = &substream->dma_buffer;
-        } else {
-                buf = kmalloc(sizeof(struct snd_dma_buffer), GFP_KERNEL);
-                if (!buf)
-                        goto nomem;
-
-                buf->dev.type = SNDRV_DMA_TYPE_DEV;
-                buf->dev.dev = dev;
-                buf->area = dma_alloc_coherent(dev, size, &buf->addr, GFP_KERNEL);
-                buf->bytes = size;
-                buf->private_data = NULL;
-
-                if (!buf->area)
-                        goto free;
-        }
-        snd_pcm_set_runtime_buffer(substream, buf);
-        ret = 1;
- out:
-        runtime->dma_bytes = size;
-        return ret;
-
- free:
-        kfree(buf);
- nomem:
-        return -ENOMEM;
-}
-
-int devdma_mmap(struct device *dev, struct snd_pcm_substream *substream, struct vm_area_struct *vma)
-{
-        struct snd_pcm_runtime *runtime = substream->runtime;
-        return dma_mmap_coherent(dev, vma, runtime->dma_area, runtime->dma_addr, runtime->dma_bytes);
-}
diff --git a/sound/arm/devdma.h b/sound/arm/devdma.h
deleted file mode 100644
index d025329c8a0f..000000000000
--- a/sound/arm/devdma.h
+++ /dev/null
@@ -1,3 +0,0 @@
-void devdma_hw_free(struct device *dev, struct snd_pcm_substream *substream);
-int devdma_hw_alloc(struct device *dev, struct snd_pcm_substream *substream, size_t size);
-int devdma_mmap(struct device *dev, struct snd_pcm_substream *substream, struct vm_area_struct *vma);
diff --git a/sound/arm/pxa2xx-ac97.c b/sound/arm/pxa2xx-ac97.c
index b4b48afb6de6..5d9411839cd7 100644
--- a/sound/arm/pxa2xx-ac97.c
+++ b/sound/arm/pxa2xx-ac97.c
@@ -159,7 +159,7 @@ static int pxa2xx_ac97_resume(struct device *dev)
         return ret;
 }
 
-static struct dev_pm_ops pxa2xx_ac97_pm_ops = {
+static const struct dev_pm_ops pxa2xx_ac97_pm_ops = {
         .suspend        = pxa2xx_ac97_suspend,
         .resume         = pxa2xx_ac97_resume,
 };