diff options
Diffstat (limited to 'arch/arm')
| -rw-r--r-- | arch/arm/mach-pxa/generic.h | 1 | ||||
| -rw-r--r-- | arch/arm/mach-pxa/irq.c | 76 | ||||
| -rw-r--r-- | arch/arm/mach-pxa/pxa25x.c | 42 | ||||
| -rw-r--r-- | arch/arm/mach-pxa/pxa27x.c | 70 |
4 files changed, 116 insertions, 73 deletions
diff --git a/arch/arm/mach-pxa/generic.h b/arch/arm/mach-pxa/generic.h index 25bd9bf727b..2c4fe617cfc 100644 --- a/arch/arm/mach-pxa/generic.h +++ b/arch/arm/mach-pxa/generic.h @@ -15,6 +15,7 @@ extern struct sys_timer pxa_timer; extern void __init pxa_init_irq_low(void); extern void __init pxa_init_irq_high(void); extern void __init pxa_init_irq_gpio(int gpio_nr); +extern void __init pxa_init_irq_set_wake(int (*set_wake)(unsigned int, unsigned int)); extern void __init pxa25x_init_irq(void); extern void __init pxa27x_init_irq(void); extern void __init pxa_map_io(void); diff --git a/arch/arm/mach-pxa/irq.c b/arch/arm/mach-pxa/irq.c index 3d95442d416..294cc6758d5 100644 --- a/arch/arm/mach-pxa/irq.c +++ b/arch/arm/mach-pxa/irq.c @@ -38,33 +38,11 @@ static void pxa_unmask_low_irq(unsigned int irq) ICMR |= (1 << irq); } -static int pxa_set_wake(unsigned int irq, unsigned int on) -{ - u32 mask; - - switch (irq) { - case IRQ_RTCAlrm: - mask = PWER_RTC; - break; -#ifdef CONFIG_PXA27x - /* REVISIT can handle USBH1, USBH2, USB, MSL, USIM, ... */ -#endif - default: - return -EINVAL; - } - if (on) - PWER |= mask; - else - PWER &= ~mask; - return 0; -} - static struct irq_chip pxa_internal_chip_low = { .name = "SC", .ack = pxa_mask_low_irq, .mask = pxa_mask_low_irq, .unmask = pxa_unmask_low_irq, - .set_wake = pxa_set_wake, }; void __init pxa_init_irq_low(void) @@ -125,26 +103,6 @@ void __init pxa_init_irq_high(void) } #endif -/* Note that if an input/irq line ever gets changed to an output during - * suspend, the relevant PWER, PRER, and PFER bits should be cleared. - */ -#ifdef CONFIG_PXA27x - -/* PXA27x: Various gpios can issue wakeup events. This logic only - * handles the simple cases, not the WEMUX2 and WEMUX3 options - */ -#define PXA27x_GPIO_NOWAKE_MASK \ - ((1 << 8) | (1 << 7) | (1 << 6) | (1 << 5) | (1 << 2)) -#define WAKEMASK(gpio) \ - (((gpio) <= 15) \ - ? ((1 << (gpio)) & ~PXA27x_GPIO_NOWAKE_MASK) \ - : ((gpio == 35) ? (1 << 24) : 0)) -#else - -/* pxa 210, 250, 255, 26x: gpios 0..15 can issue wakeups */ -#define WAKEMASK(gpio) (((gpio) <= 15) ? (1 << (gpio)) : 0) -#endif - /* * PXA GPIO edge detection for IRQs: * IRQs are generated on Falling-Edge, Rising-Edge, or both. @@ -158,11 +116,9 @@ static long GPIO_IRQ_mask[4]; static int pxa_gpio_irq_type(unsigned int irq, unsigned int type) { int gpio, idx; - u32 mask; gpio = IRQ_TO_GPIO(irq); idx = gpio >> 5; - mask = WAKEMASK(gpio); if (type == IRQT_PROBE) { /* Don't mess with enabled GPIOs using preconfigured edges or @@ -182,19 +138,15 @@ static int pxa_gpio_irq_type(unsigned int irq, unsigned int type) if (type & __IRQT_RISEDGE) { /* printk("rising "); */ __set_bit (gpio, GPIO_IRQ_rising_edge); - PRER |= mask; } else { __clear_bit (gpio, GPIO_IRQ_rising_edge); - PRER &= ~mask; } if (type & __IRQT_FALEDGE) { /* printk("falling "); */ __set_bit (gpio, GPIO_IRQ_falling_edge); - PFER |= mask; } else { __clear_bit (gpio, GPIO_IRQ_falling_edge); - PFER &= ~mask; } /* printk("edges\n"); */ @@ -213,29 +165,12 @@ static void pxa_ack_low_gpio(unsigned int irq) GEDR0 = (1 << (irq - IRQ_GPIO0)); } -static int pxa_set_gpio_wake(unsigned int irq, unsigned int on) -{ - int gpio = IRQ_TO_GPIO(irq); - u32 mask = WAKEMASK(gpio); - - if (!mask) - return -EINVAL; - - if (on) - PWER |= mask; - else - PWER &= ~mask; - return 0; -} - - static struct irq_chip pxa_low_gpio_chip = { .name = "GPIO-l", .ack = pxa_ack_low_gpio, .mask = pxa_mask_low_irq, .unmask = pxa_unmask_low_irq, .set_type = pxa_gpio_irq_type, - .set_wake = pxa_set_gpio_wake, }; /* @@ -342,7 +277,6 @@ static struct irq_chip pxa_muxed_gpio_chip = { .mask = pxa_mask_muxed_gpio, .unmask = pxa_unmask_muxed_gpio, .set_type = pxa_gpio_irq_type, - .set_wake = pxa_set_gpio_wake, }; void __init pxa_init_irq_gpio(int gpio_nr) @@ -377,3 +311,13 @@ void __init pxa_init_irq_gpio(int gpio_nr) set_irq_chip(IRQ_GPIO_2_x, &pxa_internal_chip_low); set_irq_chained_handler(IRQ_GPIO_2_x, pxa_gpio_demux_handler); } + +void __init pxa_init_irq_set_wake(int (*set_wake)(unsigned int, unsigned int)) +{ + pxa_internal_chip_low.set_wake = set_wake; +#ifdef CONFIG_PXA27x + pxa_internal_chip_high.set_wake = set_wake; +#endif + pxa_low_gpio_chip.set_wake = set_wake; + pxa_muxed_gpio_chip.set_wake = set_wake; +} diff --git a/arch/arm/mach-pxa/pxa25x.c b/arch/arm/mach-pxa/pxa25x.c index ef40c049d9e..0d6a72504ca 100644 --- a/arch/arm/mach-pxa/pxa25x.c +++ b/arch/arm/mach-pxa/pxa25x.c @@ -227,10 +227,52 @@ static void __init pxa25x_init_pm(void) } #endif +/* PXA25x: supports wakeup from GPIO0..GPIO15 and RTC alarm + */ + +static int pxa25x_set_wake(unsigned int irq, unsigned int on) +{ + int gpio = IRQ_TO_GPIO(irq); + uint32_t gpio_bit, mask = 0; + + if (gpio >= 0 && gpio <= 15) { + gpio_bit = GPIO_bit(gpio); + mask = gpio_bit; + if (on) { + if (GRER(gpio) | gpio_bit) + PRER |= gpio_bit; + else + PRER &= ~gpio_bit; + + if (GFER(gpio) | gpio_bit) + PFER |= gpio_bit; + else + PFER &= ~gpio_bit; + } + goto set_pwer; + } + + if (irq == IRQ_RTCAlrm) { + mask = PWER_RTC; + goto set_pwer; + } + + return -EINVAL; + +set_pwer: + if (on) + PWER |= mask; + else + PWER &=~mask; + + return 0; +} + void __init pxa25x_init_irq(void) { pxa_init_irq_low(); pxa_init_irq_gpio(85); + pxa_init_irq_set_wake(pxa25x_set_wake); } static struct platform_device *pxa25x_devices[] __initdata = { diff --git a/arch/arm/mach-pxa/pxa27x.c b/arch/arm/mach-pxa/pxa27x.c index d193755afb2..2d7fc39732e 100644 --- a/arch/arm/mach-pxa/pxa27x.c +++ b/arch/arm/mach-pxa/pxa27x.c @@ -306,6 +306,69 @@ static void __init pxa27x_init_pm(void) } #endif +/* PXA27x: Various gpios can issue wakeup events. This logic only + * handles the simple cases, not the WEMUX2 and WEMUX3 options + */ +#define PXA27x_GPIO_NOWAKE_MASK \ + ((1 << 8) | (1 << 7) | (1 << 6) | (1 << 5) | (1 << 2)) +#define WAKEMASK(gpio) \ + (((gpio) <= 15) \ + ? ((1 << (gpio)) & ~PXA27x_GPIO_NOWAKE_MASK) \ + : ((gpio == 35) ? (1 << 24) : 0)) + +static int pxa27x_set_wake(unsigned int irq, unsigned int on) +{ + int gpio = IRQ_TO_GPIO(irq); + uint32_t mask; + + if ((gpio >= 0 && gpio <= 15) || (gpio == 35)) { + if (WAKEMASK(gpio) == 0) + return -EINVAL; + + mask = WAKEMASK(gpio); + + if (on) { + if (GRER(gpio) | GPIO_bit(gpio)) + PRER |= mask; + else + PRER &= ~mask; + + if (GFER(gpio) | GPIO_bit(gpio)) + PFER |= mask; + else + PFER &= ~mask; + } + goto set_pwer; + } + + switch (irq) { + case IRQ_RTCAlrm: + mask = PWER_RTC; + break; + case IRQ_USB: + mask = 1u << 26; + break; + default: + return -EINVAL; + } + +set_pwer: + if (on) + PWER |= mask; + else + PWER &=~mask; + + return 0; +} + +void __init pxa27x_init_irq(void) +{ + pxa_init_irq_low(); + pxa_init_irq_high(); + pxa_init_irq_gpio(128); + pxa_init_irq_set_wake(pxa27x_set_wake); +} + /* * device registration specific to PXA27x. */ @@ -375,13 +438,6 @@ static struct platform_device *devices[] __initdata = { &pxa27x_device_ohci, }; -void __init pxa27x_init_irq(void) -{ - pxa_init_irq_low(); - pxa_init_irq_high(); - pxa_init_irq_gpio(128); -} - static int __init pxa27x_init(void) { int ret = 0; |