ALSA: hdac_ext: add extended HDA bus

The new HDA controllers from Intel support new capabilities like
multilink, pipe processing, SPIB, GTS etc In order to use them we
create an extended HDA bus which embed the hdac bus and contains the
fields for extended configurations

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>

1 files changed, 46 insertions, 0 deletions

diff --git a/include/sound/hdaudio_ext.h b/include/sound/hdaudio_ext.h
new file mode 100644
index 000000000000..083f68a980d2
--- /dev/null
+++ b/include/sound/hdaudio_ext.h
@@ -0,0 +1,46 @@
+#ifndef __SOUND_HDAUDIO_EXT_H
+#define __SOUND_HDAUDIO_EXT_H
+
+#include <sound/hdaudio.h>
+
+/**
+ * hdac_ext_bus: HDAC extended bus for extended HDA caps
+ *
+ * @bus: hdac bus
+ * @num_streams: streams supported
+ * @ppcap: pp capabilities pointer
+ * @spbcap: SPIB capabilities pointer
+ * @mlcap: MultiLink capabilities pointer
+ * @gtscap: gts capabilities pointer
+ * @hlink_list: link list of HDA links
+ */
+struct hdac_ext_bus {
+	struct hdac_bus bus;
+	int num_streams;
+	int idx;
+
+	void __iomem *ppcap;
+	void __iomem *spbcap;
+	void __iomem *mlcap;
+	void __iomem *gtscap;
+
+	struct list_head hlink_list;
+};
+
+int snd_hdac_ext_bus_init(struct hdac_ext_bus *sbus, struct device *dev,
+		      const struct hdac_bus_ops *ops,
+		      const struct hdac_io_ops *io_ops);
+
+void snd_hdac_ext_bus_exit(struct hdac_ext_bus *sbus);
+int snd_hdac_ext_bus_device_init(struct hdac_ext_bus *sbus, int addr);
+void snd_hdac_ext_bus_device_exit(struct hdac_device *hdev);
+
+#define ebus_to_hbus(ebus)	(&(ebus)->bus)
+#define hbus_to_ebus(_bus) \
+	container_of(_bus, struct hdac_ext_bus, bus)
+
+int snd_hdac_ext_bus_parse_capabilities(struct hdac_ext_bus *sbus);
+void snd_hdac_ext_bus_ppcap_enable(struct hdac_ext_bus *chip, bool enable);
+void snd_hdac_ext_bus_ppcap_int_enable(struct hdac_ext_bus *chip, bool enable);
+
+#endif /* __SOUND_HDAUDIO_EXT_H */