diff options
| -rw-r--r-- | arch/arm/mach-ux500/cpu-db8500.c | 51 |
1 files changed, 47 insertions, 4 deletions
diff --git a/arch/arm/mach-ux500/cpu-db8500.c b/arch/arm/mach-ux500/cpu-db8500.c index 1748fbc58530..5c0fabf5fa01 100644 --- a/arch/arm/mach-ux500/cpu-db8500.c +++ b/arch/arm/mach-ux500/cpu-db8500.c @@ -12,22 +12,20 @@ #include <linux/init.h> #include <linux/device.h> #include <linux/amba/bus.h> +#include <linux/interrupt.h> #include <linux/irq.h> #include <linux/gpio.h> #include <linux/platform_device.h> #include <linux/io.h> #include <asm/mach/map.h> +#include <asm/pmu.h> #include <mach/hardware.h> #include <mach/setup.h> #include <mach/devices.h> #include "devices-db8500.h" -static struct platform_device *platform_devs[] __initdata = { - &u8500_dma40_device, -}; - /* minimum static i/o mapping required to boot U8500 platforms */ static struct map_desc u8500_uart_io_desc[] __initdata = { __IO_DEV_DESC(U8500_UART0_BASE, SZ_4K), @@ -89,6 +87,51 @@ void __init u8500_map_io(void) iotable_init(u8500_v2_io_desc, ARRAY_SIZE(u8500_v2_io_desc)); } +static struct resource db8500_pmu_resources[] = { + [0] = { + .start = IRQ_DB8500_PMU, + .end = IRQ_DB8500_PMU, + .flags = IORESOURCE_IRQ, + }, +}; + +/* + * The PMU IRQ lines of two cores are wired together into a single interrupt. + * Bounce the interrupt to the other core if it's not ours. + */ +static irqreturn_t db8500_pmu_handler(int irq, void *dev, irq_handler_t handler) +{ + irqreturn_t ret = handler(irq, dev); + int other = !smp_processor_id(); + + if (ret == IRQ_NONE && cpu_online(other)) + irq_set_affinity(irq, cpumask_of(other)); + + /* + * We should be able to get away with the amount of IRQ_NONEs we give, + * while still having the spurious IRQ detection code kick in if the + * interrupt really starts hitting spuriously. + */ + return ret; +} + +static struct arm_pmu_platdata db8500_pmu_platdata = { + .handle_irq = db8500_pmu_handler, +}; + +static struct platform_device db8500_pmu_device = { + .name = "arm-pmu", + .id = ARM_PMU_DEVICE_CPU, + .num_resources = ARRAY_SIZE(db8500_pmu_resources), + .resource = db8500_pmu_resources, + .dev.platform_data = &db8500_pmu_platdata, +}; + +static struct platform_device *platform_devs[] __initdata = { + &u8500_dma40_device, + &db8500_pmu_device, +}; + static resource_size_t __initdata db8500_gpio_base[] = { U8500_GPIOBANK0_BASE, U8500_GPIOBANK1_BASE, |