powerpc/mpc83xx: Power Management support

Basic PM support for 83xx.  Standby is implemented as sleep.
Suspend-to-RAM is implemented as "deep sleep" (with the processor
turned off) on 831x.

Signed-off-by: Scott Wood <scottwood@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>

2 files changed, 10 insertions, 0 deletions

diff --git a/include/asm-powerpc/reg.h b/include/asm-powerpc/reg.h
index bbccadfee0d6..c6d1ab650778 100644
--- a/include/asm-powerpc/reg.h
+++ b/include/asm-powerpc/reg.h
@@ -155,10 +155,12 @@
 #define   CTRL_RUNLATCH 0x1
 #define SPRN_DABR       0x3F5   /* Data Address Breakpoint Register */
 #define   DABR_TRANSLATION      (1UL << 2)
+#define SPRN_DABR2      0x13D   /* e300 */
 #define SPRN_DABRX      0x3F7   /* Data Address Breakpoint Register Extension */
 #define   DABRX_USER    (1UL << 0)
 #define   DABRX_KERNEL  (1UL << 1)
 #define SPRN_DAR        0x013   /* Data Address Register */
+#define SPRN_DBCR       0x136   /* e300 Data Breakpoint Control Reg */
 #define SPRN_DSISR      0x012   /* Data Storage Interrupt Status Register */
 #define   DSISR_NOHPTE          0x40000000      /* no translation found */
 #define   DSISR_PROTFAULT       0x08000000      /* protection fault */
@@ -264,6 +266,8 @@
 #define HID1_PS         (1<<16)         /* 750FX PLL selection */
 #define SPRN_HID2       0x3F8           /* Hardware Implementation Register 2 */
 #define SPRN_IABR       0x3F2   /* Instruction Address Breakpoint Register */
+#define SPRN_IABR2      0x3FA           /* 83xx */
+#define SPRN_IBCR       0x135           /* 83xx Insn Breakpoint Control Reg */
 #define SPRN_HID4       0x3F4           /* 970 HID4 */
 #define SPRN_HID5       0x3F6           /* 970 HID5 */
 #define SPRN_HID6       0x3F9   /* BE HID 6 */
diff --git a/include/linux/fsl_devices.h b/include/linux/fsl_devices.h
index c415a496de3a..0472877d7ea8 100644
--- a/include/linux/fsl_devices.h
+++ b/include/linux/fsl_devices.h
@@ -125,4 +125,10 @@ struct mpc8xx_pcmcia_ops {
         int(*voltage_set)(int slot, int vcc, int vpp);
 };
 
+/* Returns non-zero if the current suspend operation would
+ * lead to a deep sleep (i.e. power removed from the core,
+ * instead of just the clock).
+ */
+int fsl_deep_sleep(void);
+
 #endif /* _FSL_DEVICE_H_ */