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>
diff --git a/include/sound/hdaudio.h b/include/sound/hdaudio.h
index 9349ccf..69f27bc 100644
--- a/include/sound/hdaudio.h
+++ b/include/sound/hdaudio.h
@@ -187,6 +187,11 @@
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 @@
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 @@
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 @@
(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
*/