ALSA: hdac: Add support to enable SPIB for hdac ext stream

The drivers need to set the spib and maxfifios values, so add
these new APIs snd_hdac_ext_stream_set_spib() and
snd_hdac_ext_stream_set_spbmaxfifo() APIs

For these APIs we also need to have spib and fifos pointer, so
add these to hdac_ext_stream and initialize them at stream init

Signed-off-by: Jeeja KP <jeeja.kp@intel.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

2 files changed, 14 insertions, 0 deletions

diff --git a/include/sound/hda_register.h b/include/sound/hda_register.h
index ae995e523ff8..2ae8812d7b1a 100644
--- a/include/sound/hda_register.h
+++ b/include/sound/hda_register.h
@@ -160,6 +160,10 @@ enum { SDI0, SDI1, SDI2, SDI3, SDO0, SDO1, SDO2, SDO3 };
 #define AZX_SPB_BASE                    0x08
 /* Interval used to calculate the iterating register offset */
 #define AZX_SPB_INTERVAL                0x08
+/* SPIB base */
+#define AZX_SPB_SPIB                    0x00
+/* SPIB MAXFIFO base*/
+#define AZX_SPB_MAXFIFO                 0x04
 
 /* registers of Global Time Synchronization Capability Structure */
 #define AZX_GTS_CAP_ID                  0x1
diff --git a/include/sound/hdaudio_ext.h b/include/sound/hdaudio_ext.h
index 160160d9bffc..9385c99a6504 100644
--- a/include/sound/hdaudio_ext.h
+++ b/include/sound/hdaudio_ext.h
@@ -63,6 +63,8 @@ enum hdac_ext_stream_type {
  * @hstream: hdac_stream
  * @pphc_addr: processing pipe host stream pointer
  * @pplc_addr: processing pipe link stream pointer
+ * @spib_addr: software position in buffers stream pointer
+ * @fifo_addr: software position Max fifos stream pointer
  * @decoupled: stream host and link is decoupled
  * @link_locked: link is locked
  * @link_prepared: link is prepared
@@ -74,6 +76,9 @@ struct hdac_ext_stream {
         void __iomem *pphc_addr;
         void __iomem *pplc_addr;
 
+        void __iomem *spib_addr;
+        void __iomem *fifo_addr;
+
         bool decoupled:1;
         bool link_locked:1;
         bool link_prepared;
@@ -100,6 +105,11 @@ void snd_hdac_ext_stream_decouple(struct hdac_ext_bus *bus,
                                 struct hdac_ext_stream *azx_dev, bool decouple);
 void snd_hdac_ext_stop_streams(struct hdac_ext_bus *sbus);
 
+int snd_hdac_ext_stream_set_spib(struct hdac_ext_bus *ebus,
+                                 struct hdac_ext_stream *stream, u32 value);
+int snd_hdac_ext_stream_set_spbmaxfifo(struct hdac_ext_bus *ebus,
+                                 struct hdac_ext_stream *stream);
+
 void snd_hdac_ext_link_stream_start(struct hdac_ext_stream *hstream);
 void snd_hdac_ext_link_stream_clear(struct hdac_ext_stream *hstream);
 void snd_hdac_ext_link_stream_reset(struct hdac_ext_stream *hstream);