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>
diff --git a/sound/hda/ext/hdac_ext_stream.c b/sound/hda/ext/hdac_ext_stream.c
index b649625..a4f6bbe 100644
--- a/sound/hda/ext/hdac_ext_stream.c
+++ b/sound/hda/ext/hdac_ext_stream.c
@@ -49,6 +49,16 @@
AZX_PPLC_INTERVAL * idx;
}
+ if (ebus->spbcap) {
+ stream->spib_addr = ebus->spbcap + AZX_SPB_BASE +
+ AZX_SPB_INTERVAL * idx +
+ AZX_SPB_SPIB;
+
+ stream->fifo_addr = ebus->spbcap + AZX_SPB_BASE +
+ AZX_SPB_INTERVAL * idx +
+ AZX_SPB_MAXFIFO;
+ }
+
stream->decoupled = false;
snd_hdac_stream_init(bus, &stream->hstream, idx, direction, tag);
}
@@ -435,6 +445,50 @@
EXPORT_SYMBOL_GPL(snd_hdac_ext_stream_spbcap_enable);
/**
+ * snd_hdac_ext_stream_set_spib - sets the spib value of a stream
+ * @ebus: HD-audio ext core bus
+ * @stream: hdac_ext_stream
+ * @value: spib value to set
+ */
+int snd_hdac_ext_stream_set_spib(struct hdac_ext_bus *ebus,
+ struct hdac_ext_stream *stream, u32 value)
+{
+ struct hdac_bus *bus = &ebus->bus;
+
+ if (!ebus->spbcap) {
+ dev_err(bus->dev, "Address of SPB capability is NULL");
+ return -EINVAL;
+ }
+
+ writel(value, stream->spib_addr);
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(snd_hdac_ext_stream_set_spib);
+
+/**
+ * snd_hdac_ext_stream_set_spbmaxfifo - sets the spib value of a stream
+ * @ebus: HD-audio ext core bus
+ * @stream: hdac_ext_stream
+ *
+ * Return maxfifo for the stream
+ */
+int snd_hdac_ext_stream_set_spbmaxfifo(struct hdac_ext_bus *ebus,
+ struct hdac_ext_stream *stream)
+{
+ struct hdac_bus *bus = &ebus->bus;
+
+ if (!ebus->spbcap) {
+ dev_err(bus->dev, "Address of SPB capability is NULL");
+ return -EINVAL;
+ }
+
+ return readl(stream->fifo_addr);
+}
+EXPORT_SYMBOL_GPL(snd_hdac_ext_stream_set_spbmaxfifo);
+
+
+/**
* snd_hdac_ext_stop_streams - stop all stream if running
* @ebus: HD-audio ext core bus
*/