ASoC: sst_platform: fix the dsp driver interface
lower level drivers typically register with upper layers. So fix by exporting symbols from sst_platform driver for dsp driver to register to sst platform driver Now this driver doesnt depend on sst driver, so remove the dependency and the header files Signed-off-by: Vinod Koul <vinod.koul@linux.intel.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
This commit is contained in:
Vinod Koul
Mark Brown
Родитель
f031efe940
Коммит
03c33042db
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@ -1,7 +1,6 @@
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config SND_MFLD_MACHINE
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tristate "SOC Machine Audio driver for Intel Medfield MID platform"
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depends on INTEL_SCU_IPC
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depends on SND_INTEL_SST
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select SND_SOC_SN95031
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select SND_SST_PLATFORM
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help
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@ -32,10 +32,51 @@
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#include <sound/pcm.h>
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#include <sound/pcm_params.h>
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#include <sound/soc.h>
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#include "../../../drivers/staging/intel_sst/intel_sst_ioctl.h"
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#include "../../../drivers/staging/intel_sst/intel_sst.h"
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#include "sst_platform.h"
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static struct sst_device *sst;
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static DEFINE_MUTEX(sst_lock);
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int sst_register_dsp(struct sst_device *dev)
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{
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BUG_ON(!dev);
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if (!try_module_get(dev->dev->driver->owner))
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return -ENODEV;
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mutex_lock(&sst_lock);
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if (sst) {
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pr_err("we already have a device %s\n", sst->name);
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module_put(dev->dev->driver->owner);
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mutex_unlock(&sst_lock);
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return -EEXIST;
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}
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pr_debug("registering device %s\n", dev->name);
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sst = dev;
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mutex_unlock(&sst_lock);
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return 0;
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}
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EXPORT_SYMBOL_GPL(sst_register_dsp);
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int sst_unregister_dsp(struct sst_device *dev)
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{
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BUG_ON(!dev);
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if (dev != sst)
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return -EINVAL;
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mutex_lock(&sst_lock);
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if (!sst) {
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mutex_unlock(&sst_lock);
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return -EIO;
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}
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module_put(sst->dev->driver->owner);
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pr_debug("unreg %s\n", sst->name);
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sst = NULL;
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mutex_unlock(&sst_lock);
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return 0;
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}
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EXPORT_SYMBOL_GPL(sst_unregister_dsp);
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static struct snd_pcm_hardware sst_platform_pcm_hw = {
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.info = (SNDRV_PCM_INFO_INTERLEAVED |
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SNDRV_PCM_INFO_DOUBLE |
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@ -135,37 +176,34 @@ static inline int sst_get_stream_status(struct sst_runtime_stream *stream)
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}
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static void sst_fill_pcm_params(struct snd_pcm_substream *substream,
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struct snd_sst_stream_params *param)
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struct sst_pcm_params *param)
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{
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param->uc.pcm_params.codec = SST_CODEC_TYPE_PCM;
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param->uc.pcm_params.num_chan = (u8) substream->runtime->channels;
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param->uc.pcm_params.pcm_wd_sz = substream->runtime->sample_bits;
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param->uc.pcm_params.reserved = 0;
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param->uc.pcm_params.sfreq = substream->runtime->rate;
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param->uc.pcm_params.ring_buffer_size =
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snd_pcm_lib_buffer_bytes(substream);
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param->uc.pcm_params.period_count = substream->runtime->period_size;
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param->uc.pcm_params.ring_buffer_addr =
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virt_to_phys(substream->dma_buffer.area);
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pr_debug("period_cnt = %d\n", param->uc.pcm_params.period_count);
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pr_debug("sfreq= %d, wd_sz = %d\n",
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param->uc.pcm_params.sfreq, param->uc.pcm_params.pcm_wd_sz);
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param->codec = SST_CODEC_TYPE_PCM;
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param->num_chan = (u8) substream->runtime->channels;
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param->pcm_wd_sz = substream->runtime->sample_bits;
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param->reserved = 0;
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param->sfreq = substream->runtime->rate;
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param->ring_buffer_size = snd_pcm_lib_buffer_bytes(substream);
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param->period_count = substream->runtime->period_size;
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param->ring_buffer_addr = virt_to_phys(substream->dma_buffer.area);
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pr_debug("period_cnt = %d\n", param->period_count);
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pr_debug("sfreq= %d, wd_sz = %d\n", param->sfreq, param->pcm_wd_sz);
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}
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static int sst_platform_alloc_stream(struct snd_pcm_substream *substream)
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{
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struct sst_runtime_stream *stream =
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substream->runtime->private_data;
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struct snd_sst_stream_params param = {{{0,},},};
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struct snd_sst_params str_params = {0};
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struct sst_pcm_params param = {0};
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struct sst_stream_params str_params = {0};
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int ret_val;
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/* set codec params and inform SST driver the same */
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sst_fill_pcm_params(substream, ¶m);
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substream->runtime->dma_area = substream->dma_buffer.area;
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str_params.sparams = param;
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str_params.codec = param.uc.pcm_params.codec;
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str_params.codec = param.codec;
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if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
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str_params.ops = STREAM_OPS_PLAYBACK;
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str_params.device_type = substream->pcm->device + 1;
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@ -177,7 +215,7 @@ static int sst_platform_alloc_stream(struct snd_pcm_substream *substream)
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pr_debug("Capture stream,Device %d\n",
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substream->pcm->device);
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}
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ret_val = stream->sstdrv_ops->pcm_control->open(&str_params);
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ret_val = stream->ops->open(&str_params);
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pr_debug("SST_SND_PLAY/CAPTURE ret_val = %x\n", ret_val);
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if (ret_val < 0)
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return ret_val;
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@ -216,7 +254,7 @@ static int sst_platform_init_stream(struct snd_pcm_substream *substream)
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stream->stream_info.mad_substream = substream;
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stream->stream_info.buffer_ptr = 0;
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stream->stream_info.sfreq = substream->runtime->rate;
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ret_val = stream->sstdrv_ops->pcm_control->device_control(
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ret_val = stream->ops->device_control(
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SST_SND_STREAM_INIT, &stream->stream_info);
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if (ret_val)
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pr_err("control_set ret error %d\n", ret_val);
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@ -229,7 +267,6 @@ static int sst_platform_open(struct snd_pcm_substream *substream)
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{
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struct snd_pcm_runtime *runtime = substream->runtime;
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struct sst_runtime_stream *stream;
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int ret_val = 0;
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pr_debug("sst_platform_open called\n");
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@ -243,27 +280,27 @@ static int sst_platform_open(struct snd_pcm_substream *substream)
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if (!stream)
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return -ENOMEM;
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spin_lock_init(&stream->status_lock);
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/* get the sst ops */
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mutex_lock(&sst_lock);
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if (!sst) {
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pr_err("no device available to run\n");
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mutex_unlock(&sst_lock);
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kfree(stream);
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return -ENODEV;
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}
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if (!try_module_get(sst->dev->driver->owner)) {
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mutex_unlock(&sst_lock);
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kfree(stream);
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return -ENODEV;
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}
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stream->ops = sst->ops;
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mutex_unlock(&sst_lock);
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stream->stream_info.str_id = 0;
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sst_set_stream_status(stream, SST_PLATFORM_INIT);
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stream->stream_info.mad_substream = substream;
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/* allocate memory for SST API set */
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stream->sstdrv_ops = kzalloc(sizeof(*stream->sstdrv_ops),
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GFP_KERNEL);
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if (!stream->sstdrv_ops) {
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pr_err("sst: mem allocation for ops fail\n");
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kfree(stream);
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return -ENOMEM;
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}
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stream->sstdrv_ops->vendor_id = MSIC_VENDOR_ID;
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stream->sstdrv_ops->module_name = SST_CARD_NAMES;
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/* registering with SST driver to get access to SST APIs to use */
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ret_val = register_sst_card(stream->sstdrv_ops);
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if (ret_val) {
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pr_err("sst: sst card registration failed\n");
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kfree(stream->sstdrv_ops);
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kfree(stream);
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return ret_val;
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}
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runtime->private_data = stream;
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return 0;
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@ -278,9 +315,8 @@ static int sst_platform_close(struct snd_pcm_substream *substream)
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stream = substream->runtime->private_data;
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str_id = stream->stream_info.str_id;
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if (str_id)
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ret_val = stream->sstdrv_ops->pcm_control->close(str_id);
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unregister_sst_card(stream->sstdrv_ops);
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kfree(stream->sstdrv_ops);
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ret_val = stream->ops->close(str_id);
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module_put(sst->dev->driver->owner);
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kfree(stream);
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return ret_val;
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}
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@ -294,8 +330,8 @@ static int sst_platform_pcm_prepare(struct snd_pcm_substream *substream)
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stream = substream->runtime->private_data;
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str_id = stream->stream_info.str_id;
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if (stream->stream_info.str_id) {
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ret_val = stream->sstdrv_ops->pcm_control->device_control(
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SST_SND_DROP, &str_id);
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ret_val = stream->ops->device_control(
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SST_SND_DROP, &str_id);
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return ret_val;
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}
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@ -347,8 +383,7 @@ static int sst_platform_pcm_trigger(struct snd_pcm_substream *substream,
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default:
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return -EINVAL;
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}
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ret_val = stream->sstdrv_ops->pcm_control->device_control(str_cmd,
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&str_id);
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ret_val = stream->ops->device_control(str_cmd, &str_id);
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if (!ret_val)
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sst_set_stream_status(stream, status);
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@ -368,7 +403,7 @@ static snd_pcm_uframes_t sst_platform_pcm_pointer
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if (status == SST_PLATFORM_INIT)
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return 0;
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str_info = &stream->stream_info;
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ret_val = stream->sstdrv_ops->pcm_control->device_control(
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ret_val = stream->ops->device_control(
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SST_SND_BUFFER_POINTER, str_info);
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if (ret_val) {
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pr_err("sst: error code = %d\n", ret_val);
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@ -439,6 +474,7 @@ static int sst_platform_probe(struct platform_device *pdev)
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int ret;
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pr_debug("sst_platform_probe called\n");
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sst = NULL;
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ret = snd_soc_register_platform(&pdev->dev, &sst_soc_platform_drv);
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if (ret) {
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pr_err("registering soc platform failed\n");
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@ -42,14 +42,14 @@
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#define SST_MIN_PERIODS 2
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#define SST_MAX_PERIODS (1024*2)
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#define SST_FIFO_SIZE 0
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#define SST_CARD_NAMES "intel_mid_card"
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#define MSIC_VENDOR_ID 3
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#define SST_CODEC_TYPE_PCM 1
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struct sst_runtime_stream {
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int stream_status;
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struct pcm_stream_info stream_info;
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struct intel_sst_card_ops *sstdrv_ops;
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spinlock_t status_lock;
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struct pcm_stream_info {
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int str_id;
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void *mad_substream;
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void (*period_elapsed) (void *mad_substream);
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unsigned long long buffer_ptr;
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int sfreq;
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};
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enum sst_drv_status {
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@ -60,4 +60,72 @@ enum sst_drv_status {
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SST_PLATFORM_DROPPED,
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};
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enum sst_controls {
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SST_SND_ALLOC = 0x00,
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SST_SND_PAUSE = 0x01,
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SST_SND_RESUME = 0x02,
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SST_SND_DROP = 0x03,
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SST_SND_FREE = 0x04,
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SST_SND_BUFFER_POINTER = 0x05,
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SST_SND_STREAM_INIT = 0x06,
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SST_SND_START = 0x07,
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SST_MAX_CONTROLS = 0x07,
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};
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enum sst_stream_ops {
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STREAM_OPS_PLAYBACK = 0,
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STREAM_OPS_CAPTURE,
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};
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enum sst_audio_device_type {
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SND_SST_DEVICE_HEADSET = 1,
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SND_SST_DEVICE_IHF,
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SND_SST_DEVICE_VIBRA,
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SND_SST_DEVICE_HAPTIC,
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SND_SST_DEVICE_CAPTURE,
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};
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/* PCM Parameters */
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struct sst_pcm_params {
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u16 codec; /* codec type */
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u8 num_chan; /* 1=Mono, 2=Stereo */
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u8 pcm_wd_sz; /* 16/24 - bit*/
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u32 reserved; /* Bitrate in bits per second */
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u32 sfreq; /* Sampling rate in Hz */
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u32 ring_buffer_size;
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u32 period_count; /* period elapsed in samples*/
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u32 ring_buffer_addr;
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};
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struct sst_stream_params {
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u32 result;
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u32 stream_id;
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u8 codec;
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u8 ops;
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u8 stream_type;
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u8 device_type;
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struct sst_pcm_params sparams;
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};
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struct sst_ops {
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int (*open) (struct sst_stream_params *str_param);
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int (*device_control) (int cmd, void *arg);
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int (*close) (unsigned int str_id);
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};
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struct sst_runtime_stream {
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int stream_status;
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struct pcm_stream_info stream_info;
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struct sst_ops *ops;
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spinlock_t status_lock;
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};
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struct sst_device {
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char *name;
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struct device *dev;
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struct sst_ops *ops;
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};
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int sst_register_dsp(struct sst_device *sst);
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int sst_unregister_dsp(struct sst_device *sst);
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#endif
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