1 files changed, 60 insertions, 0 deletions

diff --git a/sound/oss/maestro.h b/sound/oss/maestro.h
new file mode 100644
index 000000000000..023ec7f968f9
--- /dev/null
+++ b/sound/oss/maestro.h
@@ -0,0 +1,60 @@
+/*
+ *      Registers for the ESS PCI cards
+ */
+ 
+/*
+ *      Memory access
+ */
+ 
+#define ESS_MEM_DATA            0x00
+#define ESS_MEM_INDEX           0x02
+
+/*
+ *      AC-97 Codec port. Delay 1uS after each write. This is used to
+ *      talk AC-97 (see intel.com). Write data then register.
+ */
+ 
+#define ESS_AC97_INDEX          0x30            /* byte wide */
+#define ESS_AC97_DATA           0x32
+
+/* 
+ *      Reading is a bit different. You write register|0x80 to ubdex
+ *      delay 1uS poll the low bit of index, when it clears read the
+ *      data value.
+ */
+
+/*
+ *      Control port. Not yet fully understood
+ *      The value 0xC090 gets loaded to it then 0x0000 and 0x2800
+ *      to the data port. Then after 4uS the value 0x300 is written
+ */
+ 
+#define RING_BUS_CTRL_L         0x34
+#define RING_BUS_CTRL_H         0x36
+
+/*
+ *      This is also used during setup. The value 0x17 is written to it
+ */
+ 
+#define ESS_SETUP_18            0x18
+
+/*
+ *      And this one gets 0x000b
+ */
+ 
+#define ESS_SETUP_A2            0xA2
+
+/*
+ *      And this 0x0000
+ */
+ 
+#define ESS_SETUP_A4            0xA4
+#define ESS_SETUP_A6            0xA6
+
+/*
+ *      Stuff to do with Harpo - the wave stuff
+ */
+ 
+#define ESS_WAVETABLE_SIZE      0x14
+#define         ESS_WAVETABLE_2M        0xA180
+