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authorJeeja KP <jeeja.kp@intel.com>2015-08-21 21:36:20 +0530
committerTakashi Iwai <tiwai@suse.de>2015-08-21 19:28:20 +0200
commitee8bc4df1b5a9df1ede13975c40dec7009214595 (patch)
tree7c2da8f6921a454d31529016a700dc564f79143c /sound/hda
parentc5b0c09b8fa3e02d9cbfd9445fb4114becdd3390 (diff)
downloadlinux-ee8bc4df1b5a9df1ede13975c40dec7009214595.tar.bz2
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>
Diffstat (limited to 'sound/hda')
-rw-r--r--sound/hda/ext/hdac_ext_stream.c54
1 files changed, 54 insertions, 0 deletions
diff --git a/sound/hda/ext/hdac_ext_stream.c b/sound/hda/ext/hdac_ext_stream.c
index b649625f43a4..a4f6bbe5da8f 100644
--- a/sound/hda/ext/hdac_ext_stream.c
+++ b/sound/hda/ext/hdac_ext_stream.c
@@ -49,6 +49,16 @@ void snd_hdac_ext_stream_init(struct hdac_ext_bus *ebus,
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 @@ void snd_hdac_ext_stream_spbcap_enable(struct hdac_ext_bus *ebus,
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
*/