ARM: mm: proc-mohawk: add suspend resume for mohawk

When enable ARCH_SUSPEND_POSSIBLE, it need defintion of
cpu_mohawk_do_suspend and cpu_mohawk_do_resume

Signed-off-by: Chao Xie <chao.xie@marvell.com>
Signed-off-by: Haojian Zhuang <<haojian.zhuang@gmail.com>

2 files changed, 36 insertions, 1 deletions

diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index 4cf9d4280972..aaa22f89fd23 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -2275,7 +2275,7 @@ source "kernel/power/Kconfig"
 config ARCH_SUSPEND_POSSIBLE
         depends on !ARCH_S5PC100
         depends on CPU_ARM920T || CPU_ARM926T || CPU_SA1100 || \
-                CPU_V6 || CPU_V6K || CPU_V7 || CPU_XSC3 || CPU_XSCALE
+                CPU_V6 || CPU_V6K || CPU_V7 || CPU_XSC3 || CPU_XSCALE || CPU_MOHAWK
         def_bool y
 
 config ARM_CPU_SUSPEND
diff --git a/arch/arm/mm/proc-mohawk.S b/arch/arm/mm/proc-mohawk.S
index cdfedc5b8ad8..6a050b19cdf5 100644
--- a/arch/arm/mm/proc-mohawk.S
+++ b/arch/arm/mm/proc-mohawk.S
@@ -344,6 +344,41 @@ ENTRY(cpu_mohawk_set_pte_ext)
         mcr     p15, 0, r0, c7, c10, 4          @ drain WB
         mov     pc, lr
 
+.globl  cpu_mohawk_suspend_size
+.equ    cpu_mohawk_suspend_size, 4 * 6
+#ifdef CONFIG_PM_SLEEP
+ENTRY(cpu_mohawk_do_suspend)
+        stmfd   sp!, {r4 - r9, lr}
+        mrc     p14, 0, r4, c6, c0, 0   @ clock configuration, for turbo mode
+        mrc     p15, 0, r5, c15, c1, 0  @ CP access reg
+        mrc     p15, 0, r6, c13, c0, 0  @ PID
+        mrc     p15, 0, r7, c3, c0, 0   @ domain ID
+        mrc     p15, 0, r8, c1, c0, 1   @ auxiliary control reg
+        mrc     p15, 0, r9, c1, c0, 0   @ control reg
+        bic     r4, r4, #2              @ clear frequency change bit
+        stmia   r0, {r4 - r9}           @ store cp regs
+        ldmia   sp!, {r4 - r9, pc}
+ENDPROC(cpu_mohawk_do_suspend)
+
+ENTRY(cpu_mohawk_do_resume)
+        ldmia   r0, {r4 - r9}           @ load cp regs
+        mov     ip, #0
+        mcr     p15, 0, ip, c7, c7, 0   @ invalidate I & D caches, BTB
+        mcr     p15, 0, ip, c7, c10, 4  @ drain write (&fill) buffer
+        mcr     p15, 0, ip, c7, c5, 4   @ flush prefetch buffer
+        mcr     p15, 0, ip, c8, c7, 0   @ invalidate I & D TLBs
+        mcr     p14, 0, r4, c6, c0, 0   @ clock configuration, turbo mode.
+        mcr     p15, 0, r5, c15, c1, 0  @ CP access reg
+        mcr     p15, 0, r6, c13, c0, 0  @ PID
+        mcr     p15, 0, r7, c3, c0, 0   @ domain ID
+        orr     r1, r1, #0x18           @ cache the page table in L2
+        mcr     p15, 0, r1, c2, c0, 0   @ translation table base addr
+        mcr     p15, 0, r8, c1, c0, 1   @ auxiliary control reg
+        mov     r0, r9                  @ control register
+        b       cpu_resume_mmu
+ENDPROC(cpu_mohawk_do_resume)
+#endif
+
         __CPUINIT
 
         .type   __mohawk_setup, #function