ALSA: hda - Add DSP loader to core library code
Copied from the legacy driver code, no transition done yet. Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
parent
1475241272
commit
8f3f600b52
|
@ -187,6 +187,11 @@ struct hdac_io_ops {
|
|||
u16 (*reg_readw)(u16 __iomem *addr);
|
||||
void (*reg_writeb)(u8 value, u8 __iomem *addr);
|
||||
u8 (*reg_readb)(u8 __iomem *addr);
|
||||
/* Allocation ops */
|
||||
int (*dma_alloc_pages)(struct hdac_bus *bus, int type, size_t size,
|
||||
struct snd_dma_buffer *buf);
|
||||
void (*dma_free_pages)(struct hdac_bus *bus,
|
||||
struct snd_dma_buffer *buf);
|
||||
};
|
||||
|
||||
#define HDA_UNSOL_QUEUE_SIZE 64
|
||||
|
@ -374,6 +379,7 @@ struct hdac_stream {
|
|||
bool opened:1;
|
||||
bool running:1;
|
||||
bool no_period_wakeup:1;
|
||||
bool locked:1;
|
||||
|
||||
/* timestamp */
|
||||
unsigned long start_wallclk; /* start + minimum wallclk */
|
||||
|
@ -383,6 +389,10 @@ struct hdac_stream {
|
|||
int delay_negative_threshold;
|
||||
|
||||
struct list_head list;
|
||||
#ifdef CONFIG_SND_HDA_DSP_LOADER
|
||||
/* DSP access mutex */
|
||||
struct mutex dsp_mutex;
|
||||
#endif
|
||||
};
|
||||
|
||||
void snd_hdac_stream_init(struct hdac_bus *bus, struct hdac_stream *azx_dev,
|
||||
|
@ -440,6 +450,42 @@ void snd_hdac_stream_timecounter_init(struct hdac_stream *azx_dev,
|
|||
(snd_hdac_stream_readb(dev, reg) & \
|
||||
~(mask)) | (val))
|
||||
|
||||
#ifdef CONFIG_SND_HDA_DSP_LOADER
|
||||
/* DSP lock helpers */
|
||||
#define snd_hdac_dsp_lock_init(dev) mutex_init(&(dev)->dsp_mutex)
|
||||
#define snd_hdac_dsp_lock(dev) mutex_lock(&(dev)->dsp_mutex)
|
||||
#define snd_hdac_dsp_unlock(dev) mutex_unlock(&(dev)->dsp_mutex)
|
||||
#define snd_hdac_stream_is_locked(dev) ((dev)->locked)
|
||||
/* DSP loader helpers */
|
||||
int snd_hdac_dsp_prepare(struct hdac_stream *azx_dev, unsigned int format,
|
||||
unsigned int byte_size, struct snd_dma_buffer *bufp);
|
||||
void snd_hdac_dsp_trigger(struct hdac_stream *azx_dev, bool start);
|
||||
void snd_hdac_dsp_cleanup(struct hdac_stream *azx_dev,
|
||||
struct snd_dma_buffer *dmab);
|
||||
#else /* CONFIG_SND_HDA_DSP_LOADER */
|
||||
#define snd_hdac_dsp_lock_init(dev) do {} while (0)
|
||||
#define snd_hdac_dsp_lock(dev) do {} while (0)
|
||||
#define snd_hdac_dsp_unlock(dev) do {} while (0)
|
||||
#define snd_hdac_stream_is_locked(dev) 0
|
||||
|
||||
static inline int
|
||||
snd_hdac_dsp_prepare(struct hdac_stream *azx_dev, unsigned int format,
|
||||
unsigned int byte_size, struct snd_dma_buffer *bufp)
|
||||
{
|
||||
return 0;
|
||||
}
|
||||
|
||||
static inline void snd_hdac_dsp_trigger(struct hdac_stream *azx_dev, bool start)
|
||||
{
|
||||
}
|
||||
|
||||
static inline void snd_hdac_dsp_cleanup(struct hdac_stream *azx_dev,
|
||||
struct snd_dma_buffer *dmab)
|
||||
{
|
||||
}
|
||||
#endif /* CONFIG_SND_HDA_DSP_LOADER */
|
||||
|
||||
|
||||
/*
|
||||
* generic array helpers
|
||||
*/
|
||||
|
|
|
@ -1,3 +1,6 @@
|
|||
config SND_HDA_CORE
|
||||
tristate
|
||||
select REGMAP
|
||||
|
||||
config SND_HDA_DSP_LOADER
|
||||
bool
|
||||
|
|
|
@ -33,6 +33,7 @@ void snd_hdac_stream_init(struct hdac_bus *bus, struct hdac_stream *azx_dev,
|
|||
azx_dev->index = idx;
|
||||
azx_dev->direction = direction;
|
||||
azx_dev->stream_tag = tag;
|
||||
snd_hdac_dsp_lock_init(azx_dev);
|
||||
list_add_tail(&azx_dev->list, &bus->stream_list);
|
||||
}
|
||||
EXPORT_SYMBOL_GPL(snd_hdac_stream_init);
|
||||
|
@ -534,3 +535,115 @@ void snd_hdac_stream_sync(struct hdac_stream *azx_dev, bool start,
|
|||
}
|
||||
}
|
||||
EXPORT_SYMBOL_GPL(snd_hdac_stream_sync);
|
||||
|
||||
#ifdef CONFIG_SND_HDA_DSP_LOADER
|
||||
/**
|
||||
* snd_hdac_dsp_prepare - prepare for DSP loading
|
||||
* @azx_dev: HD-audio core stream used for DSP loading
|
||||
* @format: HD-audio stream format
|
||||
* @byte_size: data chunk byte size
|
||||
* @bufp: allocated buffer
|
||||
*
|
||||
* Allocate the buffer for the given size and set up the given stream for
|
||||
* DSP loading. Returns the stream tag (>= 0), or a negative error code.
|
||||
*/
|
||||
int snd_hdac_dsp_prepare(struct hdac_stream *azx_dev, unsigned int format,
|
||||
unsigned int byte_size, struct snd_dma_buffer *bufp)
|
||||
{
|
||||
struct hdac_bus *bus = azx_dev->bus;
|
||||
u32 *bdl;
|
||||
int err;
|
||||
|
||||
snd_hdac_dsp_lock(azx_dev);
|
||||
spin_lock_irq(&bus->reg_lock);
|
||||
if (azx_dev->running || azx_dev->locked) {
|
||||
spin_unlock_irq(&bus->reg_lock);
|
||||
err = -EBUSY;
|
||||
goto unlock;
|
||||
}
|
||||
azx_dev->locked = true;
|
||||
spin_unlock_irq(&bus->reg_lock);
|
||||
|
||||
err = bus->io_ops->dma_alloc_pages(bus, SNDRV_DMA_TYPE_DEV_SG,
|
||||
byte_size, bufp);
|
||||
if (err < 0)
|
||||
goto err_alloc;
|
||||
|
||||
azx_dev->bufsize = byte_size;
|
||||
azx_dev->period_bytes = byte_size;
|
||||
azx_dev->format_val = format;
|
||||
|
||||
snd_hdac_stream_reset(azx_dev);
|
||||
|
||||
/* reset BDL address */
|
||||
snd_hdac_stream_writel(azx_dev, SD_BDLPL, 0);
|
||||
snd_hdac_stream_writel(azx_dev, SD_BDLPU, 0);
|
||||
|
||||
azx_dev->frags = 0;
|
||||
bdl = (u32 *)azx_dev->bdl.area;
|
||||
err = setup_bdle(bus, bufp, azx_dev, &bdl, 0, byte_size, 0);
|
||||
if (err < 0)
|
||||
goto error;
|
||||
|
||||
snd_hdac_stream_setup(azx_dev);
|
||||
snd_hdac_dsp_unlock(azx_dev);
|
||||
return azx_dev->stream_tag;
|
||||
|
||||
error:
|
||||
bus->io_ops->dma_free_pages(bus, bufp);
|
||||
err_alloc:
|
||||
spin_lock_irq(&bus->reg_lock);
|
||||
azx_dev->locked = false;
|
||||
spin_unlock_irq(&bus->reg_lock);
|
||||
unlock:
|
||||
snd_hdac_dsp_unlock(azx_dev);
|
||||
return err;
|
||||
}
|
||||
EXPORT_SYMBOL_GPL(snd_hdac_dsp_prepare);
|
||||
|
||||
/**
|
||||
* snd_hdac_dsp_trigger - start / stop DSP loading
|
||||
* @azx_dev: HD-audio core stream used for DSP loading
|
||||
* @start: trigger start or stop
|
||||
*/
|
||||
void snd_hdac_dsp_trigger(struct hdac_stream *azx_dev, bool start)
|
||||
{
|
||||
if (start)
|
||||
snd_hdac_stream_start(azx_dev, true);
|
||||
else
|
||||
snd_hdac_stream_stop(azx_dev);
|
||||
}
|
||||
EXPORT_SYMBOL_GPL(snd_hdac_dsp_trigger);
|
||||
|
||||
/**
|
||||
* snd_hdac_dsp_cleanup - clean up the stream from DSP loading to normal
|
||||
* @azx_dev: HD-audio core stream used for DSP loading
|
||||
* @dmab: buffer used by DSP loading
|
||||
*/
|
||||
void snd_hdac_dsp_cleanup(struct hdac_stream *azx_dev,
|
||||
struct snd_dma_buffer *dmab)
|
||||
{
|
||||
struct hdac_bus *bus = azx_dev->bus;
|
||||
|
||||
if (!dmab->area || !azx_dev->locked)
|
||||
return;
|
||||
|
||||
snd_hdac_dsp_lock(azx_dev);
|
||||
/* reset BDL address */
|
||||
snd_hdac_stream_writel(azx_dev, SD_BDLPL, 0);
|
||||
snd_hdac_stream_writel(azx_dev, SD_BDLPU, 0);
|
||||
snd_hdac_stream_writel(azx_dev, SD_CTL, 0);
|
||||
azx_dev->bufsize = 0;
|
||||
azx_dev->period_bytes = 0;
|
||||
azx_dev->format_val = 0;
|
||||
|
||||
bus->io_ops->dma_free_pages(bus, dmab);
|
||||
dmab->area = NULL;
|
||||
|
||||
spin_lock_irq(&bus->reg_lock);
|
||||
azx_dev->locked = false;
|
||||
spin_unlock_irq(&bus->reg_lock);
|
||||
snd_hdac_dsp_unlock(azx_dev);
|
||||
}
|
||||
EXPORT_SYMBOL_GPL(snd_hdac_dsp_cleanup);
|
||||
#endif /* CONFIG_SND_HDA_DSP_LOADER */
|
||||
|
|
|
@ -38,9 +38,6 @@ config SND_HDA_TEGRA
|
|||
|
||||
if SND_HDA
|
||||
|
||||
config SND_HDA_DSP_LOADER
|
||||
bool
|
||||
|
||||
config SND_HDA_PREALLOC_SIZE
|
||||
int "Pre-allocated buffer size for HD-audio driver"
|
||||
range 0 32768
|
||||
|
|
Loading…
Reference in a new issue