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-rw-r--r--sound/pci/hda/hda_codec.c13
-rw-r--r--sound/pci/hda/hda_codec.h1
-rw-r--r--sound/pci/hda/hda_intel.c39
-rw-r--r--sound/pci/hda/patch_cirrus.c1
-rw-r--r--sound/pci/hda/patch_realtek.c1
-rw-r--r--sound/soc/atmel/Kconfig13
-rw-r--r--sound/soc/atmel/Makefile4
-rw-r--r--sound/soc/atmel/atmel-pcm-dma.c240
-rw-r--r--sound/soc/atmel/atmel-pcm-pdc.c401
-rw-r--r--sound/soc/atmel/atmel-pcm.c401
-rw-r--r--sound/soc/atmel/atmel-pcm.h34
-rw-r--r--sound/soc/atmel/atmel_ssc_dai.c168
-rw-r--r--sound/soc/atmel/atmel_ssc_dai.h3
-rw-r--r--sound/soc/atmel/sam9g20_wm8731.c116
-rw-r--r--sound/soc/codecs/Kconfig8
-rw-r--r--sound/soc/codecs/Makefile2
-rw-r--r--sound/soc/codecs/ab8500-codec.c2
-rw-r--r--sound/soc/codecs/ak4104.c65
-rw-r--r--sound/soc/codecs/ak4535.c7
-rw-r--r--sound/soc/codecs/ak4642.c23
-rw-r--r--sound/soc/codecs/arizona.c57
-rw-r--r--sound/soc/codecs/arizona.h71
-rw-r--r--sound/soc/codecs/cs4271.c32
-rw-r--r--sound/soc/codecs/da7210.c24
-rw-r--r--sound/soc/codecs/da9055.c43
-rw-r--r--sound/soc/codecs/jz4740.c142
-rw-r--r--sound/soc/codecs/lm49453.c10
-rw-r--r--sound/soc/codecs/max9768.c7
-rw-r--r--sound/soc/codecs/max98088.c14
-rw-r--r--sound/soc/codecs/wm2200.c634
-rw-r--r--sound/soc/codecs/wm5100.c2
-rw-r--r--sound/soc/codecs/wm5102.c138
-rw-r--r--sound/soc/codecs/wm5110.c69
-rw-r--r--sound/soc/codecs/wm_adsp.c699
-rw-r--r--sound/soc/codecs/wm_adsp.h59
-rw-r--r--sound/soc/codecs/wmfw.h128
-rw-r--r--sound/soc/davinci/davinci-evm.c5
-rw-r--r--sound/soc/davinci/davinci-mcasp.c152
-rw-r--r--sound/soc/davinci/davinci-mcasp.h15
-rw-r--r--sound/soc/davinci/davinci-pcm.c53
-rw-r--r--sound/soc/davinci/davinci-pcm.h2
-rw-r--r--sound/soc/fsl/Kconfig20
-rw-r--r--sound/soc/fsl/Makefile14
-rw-r--r--sound/soc/fsl/imx-pcm.c4
-rw-r--r--sound/soc/fsl/imx-sgtl5000.c1
-rw-r--r--sound/soc/fsl/p1022_rdk.c392
-rw-r--r--sound/soc/fsl/pcm030-audio-fabric.c4
-rw-r--r--sound/soc/kirkwood/kirkwood-dma.c19
-rw-r--r--sound/soc/kirkwood/kirkwood-i2s.c291
-rw-r--r--sound/soc/kirkwood/kirkwood.h11
-rw-r--r--sound/soc/mxs/mxs-saif.c2
-rw-r--r--sound/soc/omap/mcbsp.c4
-rw-r--r--sound/soc/omap/mcbsp.h6
-rw-r--r--sound/soc/omap/omap-abe-twl6040.c4
-rw-r--r--sound/soc/omap/omap-mcbsp.c5
-rw-r--r--sound/soc/omap/zoom2.c7
-rw-r--r--sound/soc/samsung/bells.c4
-rw-r--r--sound/soc/sh/fsi.c550
-rw-r--r--sound/soc/soc-cache.c10
-rw-r--r--sound/soc/soc-core.c243
-rw-r--r--sound/soc/soc-dapm.c134
-rw-r--r--sound/soc/soc-dmaengine-pcm.c2
-rw-r--r--sound/soc/soc-jack.c16
-rw-r--r--sound/soc/soc-pcm.c195
-rw-r--r--sound/soc/tegra/tegra20_das.c2
-rw-r--r--sound/soc/tegra/tegra20_i2s.c4
-rw-r--r--sound/soc/tegra/tegra20_spdif.c2
-rw-r--r--sound/soc/tegra/tegra30_ahub.c6
-rw-r--r--sound/soc/tegra/tegra30_i2s.c4
-rw-r--r--sound/soc/tegra/tegra_alc5632.c2
-rw-r--r--sound/soc/tegra/tegra_wm8753.c2
-rw-r--r--sound/soc/tegra/tegra_wm8903.c2
-rw-r--r--sound/soc/tegra/trimslice.c2
-rw-r--r--sound/usb/midi.c8
-rw-r--r--sound/usb/pcm.c2
75 files changed, 4419 insertions, 1453 deletions
diff --git a/sound/pci/hda/hda_codec.c b/sound/pci/hda/hda_codec.c
index 70d4848b5cd..d010de12335 100644
--- a/sound/pci/hda/hda_codec.c
+++ b/sound/pci/hda/hda_codec.c
@@ -95,6 +95,7 @@ int snd_hda_delete_codec_preset(struct hda_codec_preset_list *preset)
EXPORT_SYMBOL_HDA(snd_hda_delete_codec_preset);
#ifdef CONFIG_PM
+#define codec_in_pm(codec) ((codec)->in_pm)
static void hda_power_work(struct work_struct *work);
static void hda_keep_power_on(struct hda_codec *codec);
#define hda_codec_is_power_on(codec) ((codec)->power_on)
@@ -104,6 +105,7 @@ static inline void hda_call_pm_notify(struct hda_bus *bus, bool power_up)
bus->ops.pm_notify(bus, power_up);
}
#else
+#define codec_in_pm(codec) 0
static inline void hda_keep_power_on(struct hda_codec *codec) {}
#define hda_codec_is_power_on(codec) 1
#define hda_call_pm_notify(bus, state) {}
@@ -228,7 +230,7 @@ static int codec_exec_verb(struct hda_codec *codec, unsigned int cmd,
}
mutex_unlock(&bus->cmd_mutex);
snd_hda_power_down(codec);
- if (res && *res == -1 && bus->rirb_error) {
+ if (!codec_in_pm(codec) && res && *res == -1 && bus->rirb_error) {
if (bus->response_reset) {
snd_printd("hda_codec: resetting BUS due to "
"fatal communication error\n");
@@ -238,7 +240,7 @@ static int codec_exec_verb(struct hda_codec *codec, unsigned int cmd,
goto again;
}
/* clear reset-flag when the communication gets recovered */
- if (!err)
+ if (!err || codec_in_pm(codec))
bus->response_reset = 0;
return err;
}
@@ -3616,6 +3618,8 @@ static unsigned int hda_call_codec_suspend(struct hda_codec *codec, bool in_wq)
{
unsigned int state;
+ codec->in_pm = 1;
+
if (codec->patch_ops.suspend)
codec->patch_ops.suspend(codec);
hda_cleanup_all_streams(codec);
@@ -3630,6 +3634,7 @@ static unsigned int hda_call_codec_suspend(struct hda_codec *codec, bool in_wq)
codec->power_transition = 0;
codec->power_jiffies = jiffies;
spin_unlock(&codec->power_lock);
+ codec->in_pm = 0;
return state;
}
@@ -3638,6 +3643,8 @@ static unsigned int hda_call_codec_suspend(struct hda_codec *codec, bool in_wq)
*/
static void hda_call_codec_resume(struct hda_codec *codec)
{
+ codec->in_pm = 1;
+
/* set as if powered on for avoiding re-entering the resume
* in the resume / power-save sequence
*/
@@ -3656,6 +3663,8 @@ static void hda_call_codec_resume(struct hda_codec *codec)
snd_hda_codec_resume_cache(codec);
}
snd_hda_jack_report_sync(codec);
+
+ codec->in_pm = 0;
snd_hda_power_down(codec); /* flag down before returning */
}
#endif /* CONFIG_PM */
diff --git a/sound/pci/hda/hda_codec.h b/sound/pci/hda/hda_codec.h
index 507fe8a917b..4f4e545c0f4 100644
--- a/sound/pci/hda/hda_codec.h
+++ b/sound/pci/hda/hda_codec.h
@@ -869,6 +869,7 @@ struct hda_codec {
unsigned int power_on :1; /* current (global) power-state */
unsigned int d3_stop_clk:1; /* support D3 operation without BCLK */
unsigned int pm_down_notified:1; /* PM notified to controller */
+ unsigned int in_pm:1; /* suspend/resume being performed */
int power_transition; /* power-state in transition */
int power_count; /* current (global) power refcount */
struct delayed_work power_work; /* delayed task for powerdown */
diff --git a/sound/pci/hda/hda_intel.c b/sound/pci/hda/hda_intel.c
index cd2dbaf1be7..f9d870e554d 100644
--- a/sound/pci/hda/hda_intel.c
+++ b/sound/pci/hda/hda_intel.c
@@ -556,6 +556,12 @@ enum {
#define AZX_DCAPS_ALIGN_BUFSIZE (1 << 22) /* buffer size alignment */
#define AZX_DCAPS_4K_BDLE_BOUNDARY (1 << 23) /* BDLE in 4k boundary */
#define AZX_DCAPS_COUNT_LPIB_DELAY (1 << 25) /* Take LPIB as delay */
+#define AZX_DCAPS_PM_RUNTIME (1 << 26) /* runtime PM support */
+
+/* quirks for Intel PCH */
+#define AZX_DCAPS_INTEL_PCH \
+ (AZX_DCAPS_SCH_SNOOP | AZX_DCAPS_BUFSIZE | \
+ AZX_DCAPS_COUNT_LPIB_DELAY | AZX_DCAPS_PM_RUNTIME)
/* quirks for ATI SB / AMD Hudson */
#define AZX_DCAPS_PRESET_ATI_SB \
@@ -2433,6 +2439,9 @@ static void azx_power_notify(struct hda_bus *bus, bool power_up)
{
struct azx *chip = bus->private_data;
+ if (!(chip->driver_caps & AZX_DCAPS_PM_RUNTIME))
+ return;
+
if (power_up)
pm_runtime_get_sync(&chip->pci->dev);
else
@@ -2548,7 +2557,8 @@ static int azx_runtime_suspend(struct device *dev)
struct snd_card *card = dev_get_drvdata(dev);
struct azx *chip = card->private_data;
- if (!power_save_controller)
+ if (!power_save_controller ||
+ !(chip->driver_caps & AZX_DCAPS_PM_RUNTIME))
return -EAGAIN;
azx_stop_chip(chip);
@@ -3429,39 +3439,30 @@ static void __devexit azx_remove(struct pci_dev *pci)
static DEFINE_PCI_DEVICE_TABLE(azx_ids) = {
/* CPT */
{ PCI_DEVICE(0x8086, 0x1c20),
- .driver_data = AZX_DRIVER_PCH | AZX_DCAPS_SCH_SNOOP |
- AZX_DCAPS_BUFSIZE | AZX_DCAPS_COUNT_LPIB_DELAY },
+ .driver_data = AZX_DRIVER_PCH | AZX_DCAPS_INTEL_PCH },
/* PBG */
{ PCI_DEVICE(0x8086, 0x1d20),
- .driver_data = AZX_DRIVER_PCH | AZX_DCAPS_SCH_SNOOP |
- AZX_DCAPS_BUFSIZE},
+ .driver_data = AZX_DRIVER_PCH | AZX_DCAPS_INTEL_PCH },
/* Panther Point */
{ PCI_DEVICE(0x8086, 0x1e20),
- .driver_data = AZX_DRIVER_PCH | AZX_DCAPS_SCH_SNOOP |
- AZX_DCAPS_BUFSIZE | AZX_DCAPS_COUNT_LPIB_DELAY },
+ .driver_data = AZX_DRIVER_PCH | AZX_DCAPS_INTEL_PCH },
/* Lynx Point */
{ PCI_DEVICE(0x8086, 0x8c20),
- .driver_data = AZX_DRIVER_PCH | AZX_DCAPS_SCH_SNOOP |
- AZX_DCAPS_BUFSIZE | AZX_DCAPS_COUNT_LPIB_DELAY },
+ .driver_data = AZX_DRIVER_PCH | AZX_DCAPS_INTEL_PCH },
/* Lynx Point-LP */
{ PCI_DEVICE(0x8086, 0x9c20),
- .driver_data = AZX_DRIVER_PCH | AZX_DCAPS_SCH_SNOOP |
- AZX_DCAPS_BUFSIZE | AZX_DCAPS_COUNT_LPIB_DELAY },
+ .driver_data = AZX_DRIVER_PCH | AZX_DCAPS_INTEL_PCH },
/* Lynx Point-LP */
{ PCI_DEVICE(0x8086, 0x9c21),
- .driver_data = AZX_DRIVER_PCH | AZX_DCAPS_SCH_SNOOP |
- AZX_DCAPS_BUFSIZE | AZX_DCAPS_COUNT_LPIB_DELAY },
+ .driver_data = AZX_DRIVER_PCH | AZX_DCAPS_INTEL_PCH },
/* Haswell */
{ PCI_DEVICE(0x8086, 0x0c0c),
- .driver_data = AZX_DRIVER_SCH | AZX_DCAPS_SCH_SNOOP |
- AZX_DCAPS_BUFSIZE | AZX_DCAPS_COUNT_LPIB_DELAY },
+ .driver_data = AZX_DRIVER_SCH | AZX_DCAPS_INTEL_PCH },
{ PCI_DEVICE(0x8086, 0x0d0c),
- .driver_data = AZX_DRIVER_SCH | AZX_DCAPS_SCH_SNOOP |
- AZX_DCAPS_BUFSIZE | AZX_DCAPS_COUNT_LPIB_DELAY },
+ .driver_data = AZX_DRIVER_SCH | AZX_DCAPS_INTEL_PCH },
/* 5 Series/3400 */
{ PCI_DEVICE(0x8086, 0x3b56),
- .driver_data = AZX_DRIVER_SCH | AZX_DCAPS_SCH_SNOOP |
- AZX_DCAPS_BUFSIZE | AZX_DCAPS_COUNT_LPIB_DELAY },
+ .driver_data = AZX_DRIVER_SCH | AZX_DCAPS_INTEL_PCH },
/* SCH */
{ PCI_DEVICE(0x8086, 0x811b),
.driver_data = AZX_DRIVER_SCH | AZX_DCAPS_SCH_SNOOP |
diff --git a/sound/pci/hda/patch_cirrus.c b/sound/pci/hda/patch_cirrus.c
index d5f3a26d608..3bcb6717235 100644
--- a/sound/pci/hda/patch_cirrus.c
+++ b/sound/pci/hda/patch_cirrus.c
@@ -466,6 +466,7 @@ static int parse_output(struct hda_codec *codec)
memcpy(cfg->speaker_pins, cfg->line_out_pins,
sizeof(cfg->speaker_pins));
cfg->line_outs = 0;
+ memset(cfg->line_out_pins, 0, sizeof(cfg->line_out_pins));
}
return 0;
diff --git a/sound/pci/hda/patch_realtek.c b/sound/pci/hda/patch_realtek.c
index 68fd49294b2..ad68d223f8a 100644
--- a/sound/pci/hda/patch_realtek.c
+++ b/sound/pci/hda/patch_realtek.c
@@ -7065,6 +7065,7 @@ static const struct hda_codec_preset snd_hda_preset_realtek[] = {
{ .id = 0x10ec0282, .name = "ALC282", .patch = patch_alc269 },
{ .id = 0x10ec0283, .name = "ALC283", .patch = patch_alc269 },
{ .id = 0x10ec0290, .name = "ALC290", .patch = patch_alc269 },
+ { .id = 0x10ec0292, .name = "ALC292", .patch = patch_alc269 },
{ .id = 0x10ec0861, .rev = 0x100340, .name = "ALC660",
.patch = patch_alc861 },
{ .id = 0x10ec0660, .name = "ALC660-VD", .patch = patch_alc861vd },
diff --git a/sound/soc/atmel/Kconfig b/sound/soc/atmel/Kconfig
index 72b09cfd3dc..d1b691bf8e2 100644
--- a/sound/soc/atmel/Kconfig
+++ b/sound/soc/atmel/Kconfig
@@ -6,6 +6,14 @@ config SND_ATMEL_SOC
the ATMEL SSC interface. You will also need
to select the audio interfaces to support below.
+config SND_ATMEL_SOC_PDC
+ tristate
+ depends on SND_ATMEL_SOC
+
+config SND_ATMEL_SOC_DMA
+ tristate
+ depends on SND_ATMEL_SOC
+
config SND_ATMEL_SOC_SSC
tristate
depends on SND_ATMEL_SOC
@@ -16,8 +24,8 @@ config SND_ATMEL_SOC_SSC
config SND_AT91_SOC_SAM9G20_WM8731
tristate "SoC Audio support for WM8731-based At91sam9g20 evaluation board"
- depends on ATMEL_SSC && ARCH_AT91SAM9G20 && SND_ATMEL_SOC && \
- AT91_PROGRAMMABLE_CLOCKS
+ depends on ATMEL_SSC && SND_ATMEL_SOC && AT91_PROGRAMMABLE_CLOCKS
+ select SND_ATMEL_SOC_PDC
select SND_ATMEL_SOC_SSC
select SND_SOC_WM8731
help
@@ -27,6 +35,7 @@ config SND_AT91_SOC_SAM9G20_WM8731
config SND_AT91_SOC_AFEB9260
tristate "SoC Audio support for AFEB9260 board"
depends on ATMEL_SSC && ARCH_AT91 && MACH_AFEB9260 && SND_ATMEL_SOC
+ select SND_ATMEL_SOC_PDC
select SND_ATMEL_SOC_SSC
select SND_SOC_TLV320AIC23
help
diff --git a/sound/soc/atmel/Makefile b/sound/soc/atmel/Makefile
index a5c0bf19da7..41967ccb6f4 100644
--- a/sound/soc/atmel/Makefile
+++ b/sound/soc/atmel/Makefile
@@ -1,8 +1,12 @@
# AT91 Platform Support
snd-soc-atmel-pcm-objs := atmel-pcm.o
+snd-soc-atmel-pcm-pdc-objs := atmel-pcm-pdc.o
+snd-soc-atmel-pcm-dma-objs := atmel-pcm-dma.o
snd-soc-atmel_ssc_dai-objs := atmel_ssc_dai.o
obj-$(CONFIG_SND_ATMEL_SOC) += snd-soc-atmel-pcm.o
+obj-$(CONFIG_SND_ATMEL_SOC_PDC) += snd-soc-atmel-pcm-pdc.o
+obj-$(CONFIG_SND_ATMEL_SOC_DMA) += snd-soc-atmel-pcm-dma.o
obj-$(CONFIG_SND_ATMEL_SOC_SSC) += snd-soc-atmel_ssc_dai.o
# AT91 Machine Support
diff --git a/sound/soc/atmel/atmel-pcm-dma.c b/sound/soc/atmel/atmel-pcm-dma.c
new file mode 100644
index 00000000000..30184a4a147
--- /dev/null
+++ b/sound/soc/atmel/atmel-pcm-dma.c
@@ -0,0 +1,240 @@
+/*
+ * atmel-pcm-dma.c -- ALSA PCM DMA support for the Atmel SoC.
+ *
+ * Copyright (C) 2012 Atmel
+ *
+ * Author: Bo Shen <voice.shen@atmel.com>
+ *
+ * Based on atmel-pcm by:
+ * Sedji Gaouaou <sedji.gaouaou@atmel.com>
+ * Copyright 2008 Atmel
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/platform_device.h>
+#include <linux/slab.h>
+#include <linux/dma-mapping.h>
+#include <linux/dmaengine.h>
+#include <linux/atmel-ssc.h>
+#include <linux/platform_data/dma-atmel.h>
+
+#include <sound/core.h>
+#include <sound/pcm.h>
+#include <sound/pcm_params.h>
+#include <sound/soc.h>
+#include <sound/dmaengine_pcm.h>
+
+#include "atmel-pcm.h"
+
+/*--------------------------------------------------------------------------*\
+ * Hardware definition
+\*--------------------------------------------------------------------------*/
+static const struct snd_pcm_hardware atmel_pcm_dma_hardware = {
+ .info = SNDRV_PCM_INFO_MMAP |
+ SNDRV_PCM_INFO_MMAP_VALID |
+ SNDRV_PCM_INFO_INTERLEAVED |
+ SNDRV_PCM_INFO_RESUME |
+ SNDRV_PCM_INFO_PAUSE,
+ .formats = SNDRV_PCM_FMTBIT_S16_LE,
+ .period_bytes_min = 256, /* lighting DMA overhead */
+ .period_bytes_max = 2 * 0xffff, /* if 2 bytes format */
+ .periods_min = 8,
+ .periods_max = 1024, /* no limit */
+ .buffer_bytes_max = ATMEL_SSC_DMABUF_SIZE,
+};
+
+/**
+ * atmel_pcm_dma_irq: SSC interrupt handler for DMAENGINE enabled SSC
+ *
+ * We use DMAENGINE to send/receive data to/from SSC so this ISR is only to
+ * check if any overrun occured.
+ */
+static void atmel_pcm_dma_irq(u32 ssc_sr,
+ struct snd_pcm_substream *substream)
+{
+ struct atmel_pcm_dma_params *prtd;
+
+ prtd = snd_dmaengine_pcm_get_data(substream);
+
+ if (ssc_sr & prtd->mask->ssc_error) {
+ if (snd_pcm_running(substream))
+ pr_warn("atmel-pcm: buffer %s on %s (SSC_SR=%#x)\n",
+ substream->stream == SNDRV_PCM_STREAM_PLAYBACK
+ ? "underrun" : "overrun", prtd->name,
+ ssc_sr);
+
+ /* stop RX and capture: will be enabled again at restart */
+ ssc_writex(prtd->ssc->regs, SSC_CR, prtd->mask->ssc_disable);
+ snd_pcm_stop(substream, SNDRV_PCM_STATE_XRUN);
+
+ /* now drain RHR and read status to remove xrun condition */
+ ssc_readx(prtd->ssc->regs, SSC_RHR);
+ ssc_readx(prtd->ssc->regs, SSC_SR);
+ }
+}
+
+/*--------------------------------------------------------------------------*\
+ * DMAENGINE operations
+\*--------------------------------------------------------------------------*/
+static bool filter(struct dma_chan *chan, void *slave)
+{
+ struct at_dma_slave *sl = slave;
+
+ if (sl->dma_dev == chan->device->dev) {
+ chan->private = sl;
+ return true;
+ } else {
+ return false;
+ }
+}
+
+static int atmel_pcm_configure_dma(struct snd_pcm_substream *substream,
+ struct snd_pcm_hw_params *params)
+{
+ struct atmel_pcm_dma_params *prtd;
+ struct ssc_device *ssc;
+ struct dma_chan *dma_chan;
+ struct dma_slave_config slave_config;
+ int ret;
+
+ prtd = snd_dmaengine_pcm_get_data(substream);
+ ssc = prtd->ssc;
+
+ ret = snd_hwparams_to_dma_slave_config(substream, params,
+ &slave_config);
+ if (ret) {
+ pr_err("atmel-pcm: hwparams to dma slave configure failed\n");
+ return ret;
+ }
+
+ if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
+ slave_config.dst_addr = (dma_addr_t)ssc->phybase + SSC_THR;
+ slave_config.dst_maxburst = 1;
+ } else {
+ slave_config.src_addr = (dma_addr_t)ssc->phybase + SSC_RHR;
+ slave_config.src_maxburst = 1;
+ }
+
+ slave_config.device_fc = false;
+
+ dma_chan = snd_dmaengine_pcm_get_chan(substream);
+ if (dmaengine_slave_config(dma_chan, &slave_config)) {
+ pr_err("atmel-pcm: failed to configure dma channel\n");
+ ret = -EBUSY;
+ return ret;
+ }
+
+ return 0;
+}
+
+static int atmel_pcm_hw_params(struct snd_pcm_substream *substream,
+ struct snd_pcm_hw_params *params)
+{
+ struct snd_soc_pcm_runtime *rtd = substream->private_data;