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Diffstat (limited to 'sound/soc/mid-x86/sst_platform.c')
-rw-r--r--sound/soc/mid-x86/sst_platform.c154
1 files changed, 89 insertions, 65 deletions
diff --git a/sound/soc/mid-x86/sst_platform.c b/sound/soc/mid-x86/sst_platform.c
index 23057020aa0..d34563b12c3 100644
--- a/sound/soc/mid-x86/sst_platform.c
+++ b/sound/soc/mid-x86/sst_platform.c
@@ -32,10 +32,51 @@
#include <sound/pcm.h>
#include <sound/pcm_params.h>
#include <sound/soc.h>
-#include "../../../drivers/staging/intel_sst/intel_sst_ioctl.h"
-#include "../../../drivers/staging/intel_sst/intel_sst.h"
#include "sst_platform.h"
+static struct sst_device *sst;
+static DEFINE_MUTEX(sst_lock);
+
+int sst_register_dsp(struct sst_device *dev)
+{
+ BUG_ON(!dev);
+ if (!try_module_get(dev->dev->driver->owner))
+ return -ENODEV;
+ mutex_lock(&sst_lock);
+ if (sst) {
+ pr_err("we already have a device %s\n", sst->name);
+ module_put(dev->dev->driver->owner);
+ mutex_unlock(&sst_lock);
+ return -EEXIST;
+ }
+ pr_debug("registering device %s\n", dev->name);
+ sst = dev;
+ mutex_unlock(&sst_lock);
+ return 0;
+}
+EXPORT_SYMBOL_GPL(sst_register_dsp);
+
+int sst_unregister_dsp(struct sst_device *dev)
+{
+ BUG_ON(!dev);
+ if (dev != sst)
+ return -EINVAL;
+
+ mutex_lock(&sst_lock);
+
+ if (!sst) {
+ mutex_unlock(&sst_lock);
+ return -EIO;
+ }
+
+ module_put(sst->dev->driver->owner);
+ pr_debug("unreg %s\n", sst->name);
+ sst = NULL;
+ mutex_unlock(&sst_lock);
+ return 0;
+}
+EXPORT_SYMBOL_GPL(sst_unregister_dsp);
+
static struct snd_pcm_hardware sst_platform_pcm_hw = {
.info = (SNDRV_PCM_INFO_INTERLEAVED |
SNDRV_PCM_INFO_DOUBLE |
@@ -135,37 +176,34 @@ static inline int sst_get_stream_status(struct sst_runtime_stream *stream)
}
static void sst_fill_pcm_params(struct snd_pcm_substream *substream,
- struct snd_sst_stream_params *param)
+ struct sst_pcm_params *param)
{
- param->uc.pcm_params.codec = SST_CODEC_TYPE_PCM;
- param->uc.pcm_params.num_chan = (u8) substream->runtime->channels;
- param->uc.pcm_params.pcm_wd_sz = substream->runtime->sample_bits;
- param->uc.pcm_params.reserved = 0;
- param->uc.pcm_params.sfreq = substream->runtime->rate;
- param->uc.pcm_params.ring_buffer_size =
- snd_pcm_lib_buffer_bytes(substream);
- param->uc.pcm_params.period_count = substream->runtime->period_size;
- param->uc.pcm_params.ring_buffer_addr =
- virt_to_phys(substream->dma_buffer.area);
- pr_debug("period_cnt = %d\n", param->uc.pcm_params.period_count);
- pr_debug("sfreq= %d, wd_sz = %d\n",
- param->uc.pcm_params.sfreq, param->uc.pcm_params.pcm_wd_sz);
+ param->codec = SST_CODEC_TYPE_PCM;
+ param->num_chan = (u8) substream->runtime->channels;
+ param->pcm_wd_sz = substream->runtime->sample_bits;
+ param->reserved = 0;
+ param->sfreq = substream->runtime->rate;
+ param->ring_buffer_size = snd_pcm_lib_buffer_bytes(substream);
+ param->period_count = substream->runtime->period_size;
+ param->ring_buffer_addr = virt_to_phys(substream->dma_buffer.area);
+ pr_debug("period_cnt = %d\n", param->period_count);
+ pr_debug("sfreq= %d, wd_sz = %d\n", param->sfreq, param->pcm_wd_sz);
}
static int sst_platform_alloc_stream(struct snd_pcm_substream *substream)
{
struct sst_runtime_stream *stream =
substream->runtime->private_data;
- struct snd_sst_stream_params param = {{{0,},},};
- struct snd_sst_params str_params = {0};
+ struct sst_pcm_params param = {0};
+ struct sst_stream_params str_params = {0};
int ret_val;
/* set codec params and inform SST driver the same */
sst_fill_pcm_params(substream, &param);
substream->runtime->dma_area = substream->dma_buffer.area;
str_params.sparams = param;
- str_params.codec = param.uc.pcm_params.codec;
+ str_params.codec = param.codec;
if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
str_params.ops = STREAM_OPS_PLAYBACK;
str_params.device_type = substream->pcm->device + 1;
@@ -177,7 +215,7 @@ static int sst_platform_alloc_stream(struct snd_pcm_substream *substream)
pr_debug("Capture stream,Device %d\n",
substream->pcm->device);
}
- ret_val = stream->sstdrv_ops->pcm_control->open(&str_params);
+ ret_val = stream->ops->open(&str_params);
pr_debug("SST_SND_PLAY/CAPTURE ret_val = %x\n", ret_val);
if (ret_val < 0)
return ret_val;
@@ -216,7 +254,7 @@ static int sst_platform_init_stream(struct snd_pcm_substream *substream)
stream->stream_info.mad_substream = substream;
stream->stream_info.buffer_ptr = 0;
stream->stream_info.sfreq = substream->runtime->rate;
- ret_val = stream->sstdrv_ops->pcm_control->device_control(
+ ret_val = stream->ops->device_control(
SST_SND_STREAM_INIT, &stream->stream_info);
if (ret_val)
pr_err("control_set ret error %d\n", ret_val);
@@ -229,7 +267,7 @@ static int sst_platform_open(struct snd_pcm_substream *substream)
{
struct snd_pcm_runtime *runtime = substream->runtime;
struct sst_runtime_stream *stream;
- int ret_val = 0;
+ int ret_val;
pr_debug("sst_platform_open called\n");
@@ -243,27 +281,27 @@ static int sst_platform_open(struct snd_pcm_substream *substream)
if (!stream)
return -ENOMEM;
spin_lock_init(&stream->status_lock);
- stream->stream_info.str_id = 0;
- sst_set_stream_status(stream, SST_PLATFORM_INIT);
- stream->stream_info.mad_substream = substream;
- /* allocate memory for SST API set */
- stream->sstdrv_ops = kzalloc(sizeof(*stream->sstdrv_ops),
- GFP_KERNEL);
- if (!stream->sstdrv_ops) {
- pr_err("sst: mem allocation for ops fail\n");
+
+ /* get the sst ops */
+ mutex_lock(&sst_lock);
+ if (!sst) {
+ pr_err("no device available to run\n");
+ mutex_unlock(&sst_lock);
kfree(stream);
- return -ENOMEM;
+ return -ENODEV;
}
- stream->sstdrv_ops->vendor_id = MSIC_VENDOR_ID;
- stream->sstdrv_ops->module_name = SST_CARD_NAMES;
- /* registering with SST driver to get access to SST APIs to use */
- ret_val = register_sst_card(stream->sstdrv_ops);
- if (ret_val) {
- pr_err("sst: sst card registration failed\n");
- kfree(stream->sstdrv_ops);
+ if (!try_module_get(sst->dev->driver->owner)) {
+ mutex_unlock(&sst_lock);
kfree(stream);
- return ret_val;
+ return -ENODEV;
}
+ stream->ops = sst->ops;
+ mutex_unlock(&sst_lock);
+
+ stream->stream_info.str_id = 0;
+ sst_set_stream_status(stream, SST_PLATFORM_INIT);
+ stream->stream_info.mad_substream = substream;
+ /* allocate memory for SST API set */
runtime->private_data = stream;
return 0;
@@ -278,9 +316,8 @@ static int sst_platform_close(struct snd_pcm_substream *substream)
stream = substream->runtime->private_data;
str_id = stream->stream_info.str_id;
if (str_id)
- ret_val = stream->sstdrv_ops->pcm_control->close(str_id);
- unregister_sst_card(stream->sstdrv_ops);
- kfree(stream->sstdrv_ops);
+ ret_val = stream->ops->close(str_id);
+ module_put(sst->dev->driver->owner);
kfree(stream);
return ret_val;
}
@@ -294,8 +331,8 @@ static int sst_platform_pcm_prepare(struct snd_pcm_substream *substream)
stream = substream->runtime->private_data;
str_id = stream->stream_info.str_id;
if (stream->stream_info.str_id) {
- ret_val = stream->sstdrv_ops->pcm_control->device_control(
- SST_SND_DROP, &str_id);
+ ret_val = stream->ops->device_control(
+ SST_SND_DROP, &str_id);
return ret_val;
}
@@ -347,8 +384,7 @@ static int sst_platform_pcm_trigger(struct snd_pcm_substream *substream,
default:
return -EINVAL;
}
- ret_val = stream->sstdrv_ops->pcm_control->device_control(str_cmd,
- &str_id);
+ ret_val = stream->ops->device_control(str_cmd, &str_id);
if (!ret_val)
sst_set_stream_status(stream, status);
@@ -368,7 +404,7 @@ static snd_pcm_uframes_t sst_platform_pcm_pointer
if (status == SST_PLATFORM_INIT)
return 0;
str_info = &stream->stream_info;
- ret_val = stream->sstdrv_ops->pcm_control->device_control(
+ ret_val = stream->ops->device_control(
SST_SND_BUFFER_POINTER, str_info);
if (ret_val) {
pr_err("sst: error code = %d\n", ret_val);
@@ -408,15 +444,14 @@ static void sst_pcm_free(struct snd_pcm *pcm)
snd_pcm_lib_preallocate_free_for_all(pcm);
}
-int sst_pcm_new(struct snd_soc_pcm_runtime *rtd)
+static int sst_pcm_new(struct snd_soc_pcm_runtime *rtd)
{
- struct snd_soc_dai *dai = rtd->cpu_dai;
struct snd_pcm *pcm = rtd->pcm;
int retval = 0;
pr_debug("sst_pcm_new called\n");
- if (dai->driver->playback.channels_min ||
- dai->driver->capture.channels_min) {
+ if (pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].substream ||
+ pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream) {
retval = snd_pcm_lib_preallocate_pages_for_all(pcm,
SNDRV_DMA_TYPE_CONTINUOUS,
snd_dma_continuous_data(GFP_KERNEL),
@@ -428,7 +463,7 @@ int sst_pcm_new(struct snd_soc_pcm_runtime *rtd)
}
return retval;
}
-struct snd_soc_platform_driver sst_soc_platform_drv = {
+static struct snd_soc_platform_driver sst_soc_platform_drv = {
.ops = &sst_platform_ops,
.pcm_new = sst_pcm_new,
.pcm_free = sst_pcm_free,
@@ -439,6 +474,7 @@ static int sst_platform_probe(struct platform_device *pdev)
int ret;
pr_debug("sst_platform_probe called\n");
+ sst = NULL;
ret = snd_soc_register_platform(&pdev->dev, &sst_soc_platform_drv);
if (ret) {
pr_err("registering soc platform failed\n");
@@ -472,19 +508,7 @@ static struct platform_driver sst_platform_driver = {
.remove = sst_platform_remove,
};
-static int __init sst_soc_platform_init(void)
-{
- pr_debug("sst_soc_platform_init called\n");
- return platform_driver_register(&sst_platform_driver);
-}
-module_init(sst_soc_platform_init);
-
-static void __exit sst_soc_platform_exit(void)
-{
- platform_driver_unregister(&sst_platform_driver);
- pr_debug("sst_soc_platform_exit success\n");
-}
-module_exit(sst_soc_platform_exit);
+module_platform_driver(sst_platform_driver);
MODULE_DESCRIPTION("ASoC Intel(R) MID Platform driver");
MODULE_AUTHOR("Vinod Koul <vinod.koul@intel.com>");