diff options
Diffstat (limited to 'arch/arm/plat-mxc/tzic.c')
| -rw-r--r-- | arch/arm/plat-mxc/tzic.c | 46 |
1 files changed, 39 insertions, 7 deletions
diff --git a/arch/arm/plat-mxc/tzic.c b/arch/arm/plat-mxc/tzic.c index 3703ab28257f..e69ed8a8c203 100644 --- a/arch/arm/plat-mxc/tzic.c +++ b/arch/arm/plat-mxc/tzic.c @@ -21,6 +21,8 @@ #include <mach/hardware.h> #include <mach/common.h> +#include "irq-common.h" + /* ***************************************** * TZIC Registers * @@ -47,6 +49,25 @@ void __iomem *tzic_base; /* Used as irq controller base in entry-macro.S */ +#ifdef CONFIG_FIQ +static int tzic_set_irq_fiq(unsigned int irq, unsigned int type) +{ + unsigned int index, mask, value; + + index = irq >> 5; + if (unlikely(index >= 4)) + return -EINVAL; + mask = 1U << (irq & 0x1F); + + value = __raw_readl(tzic_base + TZIC_INTSEC0(index)) | mask; + if (type) + value &= ~mask; + __raw_writel(value, tzic_base + TZIC_INTSEC0(index)); + + return 0; +} +#endif + /** * tzic_mask_irq() - Disable interrupt number "irq" in the TZIC * @@ -104,12 +125,17 @@ static int tzic_set_wake_irq(unsigned int irq, unsigned int enable) return 0; } -static struct irq_chip mxc_tzic_chip = { - .name = "MXC_TZIC", - .ack = tzic_mask_irq, - .mask = tzic_mask_irq, - .unmask = tzic_unmask_irq, - .set_wake = tzic_set_wake_irq, +static struct mxc_irq_chip mxc_tzic_chip = { + .base = { + .name = "MXC_TZIC", + .ack = tzic_mask_irq, + .mask = tzic_mask_irq, + .unmask = tzic_unmask_irq, + .set_wake = tzic_set_wake_irq, + }, +#ifdef CONFIG_FIQ + .set_irq_fiq = tzic_set_irq_fiq, +#endif }; /* @@ -141,10 +167,16 @@ void __init tzic_init_irq(void __iomem *irqbase) /* all IRQ no FIQ Warning :: No selection */ for (i = 0; i < MXC_INTERNAL_IRQS; i++) { - set_irq_chip(i, &mxc_tzic_chip); + set_irq_chip(i, &mxc_tzic_chip.base); set_irq_handler(i, handle_level_irq); set_irq_flags(i, IRQF_VALID); } + +#ifdef CONFIG_FIQ + /* Initialize FIQ */ + init_FIQ(); +#endif + pr_info("TrustZone Interrupt Controller (TZIC) initialized\n"); } |