diff options
Diffstat (limited to 'arch/arm/mach-mvebu/pmsu.c')
| -rw-r--r-- | arch/arm/mach-mvebu/pmsu.c | 26 |
1 files changed, 19 insertions, 7 deletions
diff --git a/arch/arm/mach-mvebu/pmsu.c b/arch/arm/mach-mvebu/pmsu.c index ab525b7bfc03..15e67bf67c1c 100644 --- a/arch/arm/mach-mvebu/pmsu.c +++ b/arch/arm/mach-mvebu/pmsu.c @@ -191,8 +191,14 @@ static void mvebu_v7_pmsu_enable_l2_powerdown_onidle(void) writel(reg, pmsu_mp_base + L2C_NFABRIC_PM_CTL); } +enum pmsu_idle_prepare_flags { + PMSU_PREPARE_NORMAL = 0, + PMSU_PREPARE_DEEP_IDLE = BIT(0), + PMSU_PREPARE_SNOOP_DISABLE = BIT(1), +}; + /* No locking is needed because we only access per-CPU registers */ -static int mvebu_v7_pmsu_idle_prepare(bool deepidle) +static int mvebu_v7_pmsu_idle_prepare(unsigned long flags) { unsigned int hw_cpu = cpu_logical_map(smp_processor_id()); u32 reg; @@ -216,26 +222,32 @@ static int mvebu_v7_pmsu_idle_prepare(bool deepidle) reg = readl(pmsu_mp_base + PMSU_CONTROL_AND_CONFIG(hw_cpu)); /* ask HW to power down the L2 Cache if needed */ - if (deepidle) + if (flags & PMSU_PREPARE_DEEP_IDLE) reg |= PMSU_CONTROL_AND_CONFIG_L2_PWDDN; /* request power down */ reg |= PMSU_CONTROL_AND_CONFIG_PWDDN_REQ; writel(reg, pmsu_mp_base + PMSU_CONTROL_AND_CONFIG(hw_cpu)); - /* Disable snoop disable by HW - SW is taking care of it */ - reg = readl(pmsu_mp_base + PMSU_CPU_POWER_DOWN_CONTROL(hw_cpu)); - reg |= PMSU_CPU_POWER_DOWN_DIS_SNP_Q_SKIP; - writel(reg, pmsu_mp_base + PMSU_CPU_POWER_DOWN_CONTROL(hw_cpu)); + if (flags & PMSU_PREPARE_SNOOP_DISABLE) { + /* Disable snoop disable by HW - SW is taking care of it */ + reg = readl(pmsu_mp_base + PMSU_CPU_POWER_DOWN_CONTROL(hw_cpu)); + reg |= PMSU_CPU_POWER_DOWN_DIS_SNP_Q_SKIP; + writel(reg, pmsu_mp_base + PMSU_CPU_POWER_DOWN_CONTROL(hw_cpu)); + } return 0; } int armada_370_xp_pmsu_idle_enter(unsigned long deepidle) { + unsigned long flags = PMSU_PREPARE_SNOOP_DISABLE; int ret; - ret = mvebu_v7_pmsu_idle_prepare(deepidle); + if (deepidle) + flags |= PMSU_PREPARE_DEEP_IDLE; + + ret = mvebu_v7_pmsu_idle_prepare(flags); if (ret) return ret; |