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author | Jeeja KP <jeeja.kp@intel.com> | 2015-08-21 16:06:20 (GMT) |
---|---|---|
committer | Takashi Iwai <tiwai@suse.de> | 2015-08-21 17:28:20 (GMT) |
commit | ee8bc4df1b5a9df1ede13975c40dec7009214595 (patch) | |
tree | 7c2da8f6921a454d31529016a700dc564f79143c /sound/hda/ext/hdac_ext_stream.c | |
parent | c5b0c09b8fa3e02d9cbfd9445fb4114becdd3390 (diff) | |
download | linux-ee8bc4df1b5a9df1ede13975c40dec7009214595.tar.xz |
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/ext/hdac_ext_stream.c')
-rw-r--r-- | sound/hda/ext/hdac_ext_stream.c | 54 |
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 b649625..a4f6bbe 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 */ |