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    Subject[PATCH v5 01/14] ARM: PJ4B: Add cpu_suspend/cpu_resume hooks for PJ4B
    Date
    PJ4B needs extra instructions for suspend and resume, so instead of
    using the armv7 version, this commit introduces specific versions for
    PJ4B.

    Cc: Russell King <linux@arm.linux.org.uk>
    Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
    ---
    arch/arm/mm/proc-v7.S | 28 +++++++++++++++++++++++++---
    1 file changed, 25 insertions(+), 3 deletions(-)

    diff --git a/arch/arm/mm/proc-v7.S b/arch/arm/mm/proc-v7.S
    index bd1781979a39..3c49ac86d9d2 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

    --
    1.8.1.2


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