projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| edabd38e SB |
1 | /* |
| 2 | * arch/arm/mach-dove/irq.c | |
| 3 | * | |
| 4 | * Dove IRQ handling. | |
| 5 | * | |
| 6 | * This file is licensed under the terms of the GNU General Public | |
| 7 | * License version 2. This program is licensed "as is" without any | |
| 8 | * warranty of any kind, whether express or implied. | |
| 9 | */ | |
| edabd38e SB |
10 | #include <linux/init.h> |
| 11 | #include <linux/irq.h> | |
| edabd38e | 12 | #include <linux/io.h> |
| b8cd337c | 13 | #include <asm/exception.h> |
| edabd38e | 14 | #include <plat/irq.h> |
| edabd38e | 15 | #include <mach/bridge-regs.h> |
| ce91574c | 16 | #include <plat/orion-gpio.h> |
| edabd38e SB |
17 | #include "common.h" |
| 18 | ||
| 278b45b0 AL |
19 | static int __initdata gpio0_irqs[4] = { |
| 20 | IRQ_DOVE_GPIO_0_7, | |
| 21 | IRQ_DOVE_GPIO_8_15, | |
| 22 | IRQ_DOVE_GPIO_16_23, | |
| 23 | IRQ_DOVE_GPIO_24_31, | |
| 24 | }; | |
| 25 | ||
| 26 | static int __initdata gpio1_irqs[4] = { | |
| 27 | IRQ_DOVE_HIGH_GPIO, | |
| 28 | 0, | |
| 29 | 0, | |
| 30 | 0, | |
| 31 | }; | |
| 32 | ||
| 33 | static int __initdata gpio2_irqs[4] = { | |
| 34 | 0, | |
| 35 | 0, | |
| 36 | 0, | |
| 37 | 0, | |
| 38 | }; | |
| 39 | ||
| deac3d87 TP |
40 | static void __iomem *dove_irq_base = IRQ_VIRT_BASE; |
| 41 | ||
| 42 | static asmlinkage void | |
| 43 | __exception_irq_entry dove_legacy_handle_irq(struct pt_regs *regs) | |
| 44 | { | |
| 45 | u32 stat; | |
| 46 | ||
| 47 | stat = readl_relaxed(dove_irq_base + IRQ_CAUSE_LOW_OFF); | |
| 48 | stat &= readl_relaxed(dove_irq_base + IRQ_MASK_LOW_OFF); | |
| 49 | if (stat) { | |
| 5d6bed2a | 50 | unsigned int hwirq = 1 + __fls(stat); |
| deac3d87 TP |
51 | handle_IRQ(hwirq, regs); |
| 52 | return; | |
| 53 | } | |
| 54 | stat = readl_relaxed(dove_irq_base + IRQ_CAUSE_HIGH_OFF); | |
| 55 | stat &= readl_relaxed(dove_irq_base + IRQ_MASK_HIGH_OFF); | |
| 56 | if (stat) { | |
| 5d6bed2a | 57 | unsigned int hwirq = 33 + __fls(stat); |
| deac3d87 TP |
58 | handle_IRQ(hwirq, regs); |
| 59 | return; | |
| 60 | } | |
| 61 | } | |
| deac3d87 | 62 | |
| edabd38e SB |
63 | void __init dove_init_irq(void) |
| 64 | { | |
| 5d6bed2a RK |
65 | orion_irq_init(1, IRQ_VIRT_BASE + IRQ_MASK_LOW_OFF); |
| 66 | orion_irq_init(33, IRQ_VIRT_BASE + IRQ_MASK_HIGH_OFF); | |
| edabd38e | 67 | |
| deac3d87 | 68 | set_handle_irq(dove_legacy_handle_irq); |
| deac3d87 | 69 | |
| edabd38e | 70 | /* |
| 9eac6d0a | 71 | * Initialize gpiolib for GPIOs 0-71. |
| edabd38e | 72 | */ |
| c3c5a281 | 73 | orion_gpio_init(NULL, 0, 32, DOVE_GPIO_LO_VIRT_BASE, 0, |
| 278b45b0 AL |
74 | IRQ_DOVE_GPIO_START, gpio0_irqs); |
| 75 | ||
| c3c5a281 | 76 | orion_gpio_init(NULL, 32, 32, DOVE_GPIO_HI_VIRT_BASE, 0, |
| 278b45b0 AL |
77 | IRQ_DOVE_GPIO_START + 32, gpio1_irqs); |
| 78 | ||
| c3c5a281 | 79 | orion_gpio_init(NULL, 64, 8, DOVE_GPIO2_VIRT_BASE, 0, |
| 278b45b0 | 80 | IRQ_DOVE_GPIO_START + 64, gpio2_irqs); |
| edabd38e | 81 | } |