From af9971144dde808338919cb4f3849ea2ac60739f Mon Sep 17 00:00:00 2001 From: Bartlomiej Zolnierkiewicz Date: Wed, 18 Mar 2015 14:09:57 +0100 Subject: ARM: EXYNOS: add coupled cpuidle support for Exynos3250 The following patch adds coupled cpuidle support for Exynos3250 to an existing cpuidle-exynos driver. As a result it enables AFTR mode to be used by default on Exynos3250 without the need to hot unplug CPU1 first. The detailed changelog: - use exynos_[get,set]_boot_addr() in cpuidle-exynos.c and then make cpu_boot_reg_base() static - use exynos_core_restart() in exynos_cpu0_enter_aftr() - add missing smp_rmb() to exynos_cpu0_enter_aftr() (to make the code in-sync with the platform SMP code) - add call_firmware_op(cpu_boot, 1) to exynos_cpu0_enter_aftr() - use dsb_sev() instead of IPI wakeup for Exynos3250 in exynos_cpu0_enter_aftr() - add CPU0 vs CPU1 synchronization based on S5P_PMU_SPARE2 register for Exynos3250 to cpuidle-exynos.c - add flush_cache_all() for CPU1/0 before powerdown/AFTR for Exynos3250 to exynos_wfi_finisher()/exynos_do_idle() Signed-off-by: Bartlomiej Zolnierkiewicz Cc: Daniel Lezcano Signed-off-by: Krzysztof Kozlowski Signed-off-by: Kukjin Kim --- arch/arm/mach-exynos/exynos.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'arch/arm/mach-exynos/exynos.c') diff --git a/arch/arm/mach-exynos/exynos.c b/arch/arm/mach-exynos/exynos.c index 5917a30eee33..4bd8b7653817 100644 --- a/arch/arm/mach-exynos/exynos.c +++ b/arch/arm/mach-exynos/exynos.c @@ -234,7 +234,8 @@ static void __init exynos_dt_machine_init(void) exynos_sysram_init(); #if defined(CONFIG_SMP) && defined(CONFIG_ARM_EXYNOS_CPUIDLE) - if (of_machine_is_compatible("samsung,exynos4210")) + if (of_machine_is_compatible("samsung,exynos4210") || + of_machine_is_compatible("samsung,exynos3250")) exynos_cpuidle.dev.platform_data = &cpuidle_coupled_exynos_data; #endif if (of_machine_is_compatible("samsung,exynos4210") || -- cgit v1.2.3-59-g8ed1b