Re: [RFC PATCH 3/4] ARM: EXYNOS4: Add support AFTR mode cpuidle state on EXYNOS4210

On Fri, Aug 19, 2011 at 06:39:59PM +0530, Amit Daniel Kachhap wrote:

+ENTRY(exynos4_enter_lp)

• stmfd sp!, { r3 - r12, lr }
• adr r0, sleep_save_misc
• mrc p15, 0, r2, c15, c0, 0 @ read power control register
• str r2, [r0], #4
• mrc p15, 0, r2, c15, c0, 1 @ read diagnostic register
• str r2, [r0], #4
• ldr r3, =resume_with_mmu
• bl cpu_suspend
• mov r0, sp
• bl exynos4_cpu_lp
• /* Restore original sp */
• mov r0, sp
• add r0, r0, #4
• ldr sp, [r0]
• mov r0, #0
• b early_wakeup

This is based upon old kernel code. Clearly hasn't been tested with anything later than 3.0.