• Bartlomiej Zolnierkiewicz's avatar
    ARM: EXYNOS: add coupled cpuidle support for Exynos3250 · af997114
    Bartlomiej Zolnierkiewicz authored
    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: default avatarBartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
    Cc: Daniel Lezcano <daniel.lezcano@linaro.org>
    Signed-off-by: default avatarKrzysztof Kozlowski <k.kozlowski@samsung.com>
    Signed-off-by: default avatarKukjin Kim <kgene@kernel.org>
    af997114
pm.c 7.44 KB