ARM: OMAP4: PM: Add WakeupGen module as OMAP gic_arch_extn

OMAP WakeupGen is the interrupt controller extension used along
with ARM GIC to wake the CPU out from low power states on
external interrupts.

The WakeupGen unit is responsible for generating the wakeup event
from the incoming interrupts and enable bits. It is implemented
in the MPU always ON power domain. During normal operation,
WakeupGen delivers the external interrupts directly to the GIC.

WakeupGen specification has one restriction as per Veyron version 1.6.
It is SW responsibility to program interrupt enabling/disabling
coherently in the GIC and in the WakeupGen enable registers. That is, a
given interrupt for a given CPU is either enable at both GIC and WakeupGen,
or disable at both, but no mix. That's the reason the WakeupGen is
implemented as an extension of GIC.

Signed-off-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Acked-by: Jean Pihet <j-pihet@ti.com>
Reviewed-by: Kevin Hilman <khilman@ti.com>
Tested-by: Vishwanath BS <vishwanath.bs@ti.com>
Signed-off-by: Kevin Hilman <khilman@ti.com>

1 files changed, 39 insertions, 0 deletions

diff --git a/arch/arm/mach-omap2/include/mach/omap-wakeupgen.h b/arch/arm/mach-omap2/include/mach/omap-wakeupgen.h
new file mode 100644
index 000000000000..d79321b0f2a2
--- /dev/null
+++ b/arch/arm/mach-omap2/include/mach/omap-wakeupgen.h
@@ -0,0 +1,39 @@
+/*
+ * OMAP WakeupGen header file
+ *
+ * Copyright (C) 2011 Texas Instruments, Inc.
+ *      Santosh Shilimkar <santosh.shilimkar@ti.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+#ifndef OMAP_ARCH_WAKEUPGEN_H
+#define OMAP_ARCH_WAKEUPGEN_H
+
+#define OMAP_WKG_CONTROL_0                      0x00
+#define OMAP_WKG_ENB_A_0                        0x10
+#define OMAP_WKG_ENB_B_0                        0x14
+#define OMAP_WKG_ENB_C_0                        0x18
+#define OMAP_WKG_ENB_D_0                        0x1c
+#define OMAP_WKG_ENB_SECURE_A_0                 0x20
+#define OMAP_WKG_ENB_SECURE_B_0                 0x24
+#define OMAP_WKG_ENB_SECURE_C_0                 0x28
+#define OMAP_WKG_ENB_SECURE_D_0                 0x2c
+#define OMAP_WKG_ENB_A_1                        0x410
+#define OMAP_WKG_ENB_B_1                        0x414
+#define OMAP_WKG_ENB_C_1                        0x418
+#define OMAP_WKG_ENB_D_1                        0x41c
+#define OMAP_WKG_ENB_SECURE_A_1                 0x420
+#define OMAP_WKG_ENB_SECURE_B_1                 0x424
+#define OMAP_WKG_ENB_SECURE_C_1                 0x428
+#define OMAP_WKG_ENB_SECURE_D_1                 0x42c
+#define OMAP_AUX_CORE_BOOT_0                    0x800
+#define OMAP_AUX_CORE_BOOT_1                    0x804
+#define OMAP_PTMSYNCREQ_MASK                    0xc00
+#define OMAP_PTMSYNCREQ_EN                      0xc04
+#define OMAP_TIMESTAMPCYCLELO                   0xc08
+#define OMAP_TIMESTAMPCYCLEHI                   0xc0c
+
+extern int __init omap_wakeupgen_init(void);
+#endif