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authorGregory CLEMENT <gregory.clement@free-electrons.com>2014-03-28 12:21:16 +0100
committerRussell King <rmk+kernel@arm.linux.org.uk>2014-04-23 01:24:35 +0100
commit16c79a3776c17965dedab4732d925f6098df91c1 (patch)
tree8a2ad6402ddc7a22c61178efd11b25d7dae89d30 /arch/arm/mm/proc-v7.S
parent64d3b6a3f480154b6727dd2187f5f2b58c15da77 (diff)
ARM: 8013/1: PJ4B: Add cpu_suspend/cpu_resume hooks for PJ4B
PJ4B needs extra instructions for suspend and resume, so instead of using the armv7 version, this commit introduces specific versions for PJ4B. Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch/arm/mm/proc-v7.S')
-rw-r--r--arch/arm/mm/proc-v7.S28
1 files changed, 25 insertions, 3 deletions
diff --git a/arch/arm/mm/proc-v7.S b/arch/arm/mm/proc-v7.S
index 195731d3813b..b74ea60891d5 100644
--- a/arch/arm/mm/proc-v7.S
+++ b/arch/arm/mm/proc-v7.S
@@ -169,9 +169,31 @@ ENDPROC(cpu_pj4b_do_idle)
globl_equ cpu_pj4b_do_idle, cpu_v7_do_idle
#endif
globl_equ cpu_pj4b_dcache_clean_area, cpu_v7_dcache_clean_area
- globl_equ cpu_pj4b_do_suspend, cpu_v7_do_suspend
- globl_equ cpu_pj4b_do_resume, cpu_v7_do_resume
- globl_equ cpu_pj4b_suspend_size, cpu_v7_suspend_size
+#ifdef CONFIG_ARM_CPU_SUSPEND
+ENTRY(cpu_pj4b_do_suspend)
+ stmfd sp!, {r6 - r10}
+ mrc p15, 1, r6, c15, c1, 0 @ save CP15 - extra features
+ mrc p15, 1, r7, c15, c2, 0 @ save CP15 - Aux Func Modes Ctrl 0
+ mrc p15, 1, r8, c15, c1, 2 @ save CP15 - Aux Debug Modes Ctrl 2
+ mrc p15, 1, r9, c15, c1, 1 @ save CP15 - Aux Debug Modes Ctrl 1
+ mrc p15, 0, r10, c9, c14, 0 @ save CP15 - PMC
+ stmia r0!, {r6 - r10}
+ ldmfd sp!, {r6 - r10}
+ b cpu_v7_do_suspend
+ENDPROC(cpu_pj4b_do_suspend)
+
+ENTRY(cpu_pj4b_do_resume)
+ ldmia r0!, {r6 - r10}
+ mcr p15, 1, r6, c15, c1, 0 @ save CP15 - extra features
+ mcr p15, 1, r7, c15, c2, 0 @ save CP15 - Aux Func Modes Ctrl 0
+ mcr p15, 1, r8, c15, c1, 2 @ save CP15 - Aux Debug Modes Ctrl 2
+ mcr p15, 1, r9, c15, c1, 1 @ save CP15 - Aux Debug Modes Ctrl 1
+ mcr p15, 0, r10, c9, c14, 0 @ save CP15 - PMC
+ b cpu_v7_do_resume
+ENDPROC(cpu_pj4b_do_resume)
+#endif
+.globl cpu_pj4b_suspend_size
+.equ cpu_pj4b_suspend_size, 4 * 14
#endif