diff options
| author | Li Jun <jun.li@freescale.com> | 2015-01-29 10:26:52 +0800 |
|---|---|---|
| committer | Li Jun <jun.li@freescale.com> | 2015-01-29 12:47:42 +0800 |
| commit | e30f0515912ee927c4724634090c3cb080fecda5 (patch) | |
| tree | 0d5593950cd58fc5f767377ecf4b30d5122c87b7 /arch/arm/mach-imx | |
| parent | d138b927dc5742503bc18e6c7a36c47b7d02a03f (diff) | |
MLK-10174-1 arm: imx: gpc: export an interface to keep mega fast power
Add an interface for GPC used by drivers to keep mega fast mix domain
power.
Signed-off-by: Li Jun <jun.li@freescale.com>
Diffstat (limited to 'arch/arm/mach-imx')
| -rw-r--r-- | arch/arm/mach-imx/gpc.c | 20 |
1 files changed, 19 insertions, 1 deletions
diff --git a/arch/arm/mach-imx/gpc.c b/arch/arm/mach-imx/gpc.c index f089ec2e5382..0f31e86295a3 100644 --- a/arch/arm/mach-imx/gpc.c +++ b/arch/arm/mach-imx/gpc.c @@ -71,6 +71,7 @@ static void __iomem *gpc_base; static u32 gpc_mf_irqs[IMR_NUM]; static u32 gpc_wake_irqs[IMR_NUM]; static u32 gpc_saved_imrs[IMR_NUM]; +static u32 gpc_mf_request_on[IMR_NUM]; static u32 bypass; static DEFINE_SPINLOCK(gpc_lock); static struct notifier_block nb_pcie; @@ -145,7 +146,8 @@ static void imx_gpc_mf_mix_off(void) int i; for (i = 0; i < IMR_NUM; i++) - if ((gpc_wake_irqs[i] & gpc_mf_irqs[i]) != 0) + if (((gpc_wake_irqs[i] | gpc_mf_request_on[i]) & + gpc_mf_irqs[i]) != 0) return; pr_info("Turn off M/F mix!\n"); @@ -280,6 +282,22 @@ static int imx_pcie_regulator_notify(struct notifier_block *nb, return NOTIFY_OK; } +int imx_gpc_mf_request_on(unsigned int irq, unsigned int on) +{ + unsigned int idx = irq / 32 - 1; + unsigned long flags; + u32 mask; + + mask = 1 << (irq % 32); + spin_lock_irqsave(&gpc_lock, flags); + gpc_mf_request_on[idx] = on ? gpc_mf_request_on[idx] | mask : + gpc_mf_request_on[idx] & ~mask; + spin_unlock_irqrestore(&gpc_lock, flags); + + return 0; +} +EXPORT_SYMBOL_GPL(imx_gpc_mf_request_on); + void __init imx_gpc_init(void) { struct device_node *np; |