powerpc/85xx: add DOZE/NAP support for e500 core

The e500 core enter DOZE/NAP power-saving modes when the core go to
cpu_idle routine.

The power management default running mode is DOZE, If the user

echo 1 > /proc/sys/kernel/powersave-nap

the system will change to NAP running mode.

Signed-off-by: Dave Liu <daveliu@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>

4 files changed, 10 insertions, 6 deletions

diff --git a/include/asm-powerpc/cputable.h b/include/asm-powerpc/cputable.h
index a3dce178b728..18feb63dd3c0 100644
--- a/include/asm-powerpc/cputable.h
+++ b/include/asm-powerpc/cputable.h
@@ -347,12 +347,13 @@ extern void do_feature_fixups(unsigned long value, void *fixup_start,
 #define CPU_FTRS_E200   (CPU_FTR_USE_TB | CPU_FTR_SPE_COMP | \
             CPU_FTR_NODSISRALIGN | CPU_FTR_COHERENT_ICACHE | \
             CPU_FTR_UNIFIED_ID_CACHE)
-#define CPU_FTRS_E500   (CPU_FTR_USE_TB | CPU_FTR_SPE_COMP | \
-            CPU_FTR_NODSISRALIGN)
-#define CPU_FTRS_E500_2 (CPU_FTR_USE_TB | CPU_FTR_SPE_COMP | \
-            CPU_FTR_BIG_PHYS | CPU_FTR_NODSISRALIGN)
-#define CPU_FTRS_E500MC (CPU_FTR_USE_TB | CPU_FTR_BIG_PHYS | \
+#define CPU_FTRS_E500   (CPU_FTR_MAYBE_CAN_DOZE | CPU_FTR_USE_TB | \
+            CPU_FTR_SPE_COMP | CPU_FTR_MAYBE_CAN_NAP | CPU_FTR_NODSISRALIGN)
+#define CPU_FTRS_E500_2 (CPU_FTR_MAYBE_CAN_DOZE | CPU_FTR_USE_TB | \
+            CPU_FTR_SPE_COMP | CPU_FTR_MAYBE_CAN_NAP | CPU_FTR_BIG_PHYS | \
             CPU_FTR_NODSISRALIGN)
+#define CPU_FTRS_E500MC (CPU_FTR_MAYBE_CAN_DOZE | CPU_FTR_USE_TB | \
+            CPU_FTR_MAYBE_CAN_NAP | CPU_FTR_BIG_PHYS | CPU_FTR_NODSISRALIGN)
 #define CPU_FTRS_GENERIC_32     (CPU_FTR_COMMON | CPU_FTR_NODSISRALIGN)
 
 /* 64-bit CPUs */
diff --git a/include/asm-powerpc/machdep.h b/include/asm-powerpc/machdep.h
index 54ed64df95b8..989922621e35 100644
--- a/include/asm-powerpc/machdep.h
+++ b/include/asm-powerpc/machdep.h
@@ -262,6 +262,7 @@ struct machdep_calls {
 #endif
 };
 
+extern void e500_idle(void);
 extern void power4_idle(void);
 extern void power4_cpu_offline_powersave(void);
 extern void ppc6xx_idle(void);
diff --git a/include/asm-powerpc/reg.h b/include/asm-powerpc/reg.h
index edc0cfd7f6e2..079999b032af 100644
--- a/include/asm-powerpc/reg.h
+++ b/include/asm-powerpc/reg.h
@@ -240,7 +240,7 @@
 #define HID0_DAPUEN     (1<<8)          /* Debug APU enable */
 #define HID0_SGE        (1<<7)          /* Store Gathering Enable */
 #define HID0_SIED       (1<<7)          /* Serial Instr. Execution [Disable] */
-#define HID0_DFCA       (1<<6)          /* Data Cache Flush Assist */
+#define HID0_DCFA       (1<<6)          /* Data Cache Flush Assist */
 #define HID0_LRSTK      (1<<4)          /* Link register stack - 745x */
 #define HID0_BTIC       (1<<5)          /* Branch Target Instr Cache Enable */
 #define HID0_ABE        (1<<3)          /* Address Broadcast Enable */
diff --git a/include/asm-powerpc/reg_booke.h b/include/asm-powerpc/reg_booke.h
index a1ab2ba8f1b2..a5e8903bbc87 100644
--- a/include/asm-powerpc/reg_booke.h
+++ b/include/asm-powerpc/reg_booke.h
@@ -61,6 +61,8 @@
 #define SPRN_SPEFSCR    0x200   /* SPE & Embedded FP Status & Control */
 #define SPRN_BBEAR      0x201   /* Branch Buffer Entry Address Register */
 #define SPRN_BBTAR      0x202   /* Branch Buffer Target Address Register */
+#define SPRN_L1CFG0     0x203   /* L1 Cache Configure Register 0 */
+#define SPRN_L1CFG1     0x204   /* L1 Cache Configure Register 1 */
 #define SPRN_ATB        0x20E   /* Alternate Time Base */
 #define SPRN_ATBL       0x20E   /* Alternate Time Base Lower */
 #define SPRN_ATBU       0x20F   /* Alternate Time Base Upper */