projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 3085de6a | 1 | /* |
| 9dd0b194 | 2 | * arch/arm/mach-orion5x/irq.c |
| 3085de6a TP |
3 | * |
| 4 | * Core IRQ functions for Marvell Orion System On Chip | |
| 5 | * | |
| 6 | * Maintainer: Tzachi Perelstein <tzachi@marvell.com> | |
| 7 | * | |
| 8 | * This file is licensed under the terms of the GNU General Public | |
| 159ffb3a | 9 | * License version 2. This program is licensed "as is" without any |
| 3085de6a TP |
10 | * warranty of any kind, whether express or implied. |
| 11 | */ | |
| 2f8163ba | 12 | #include <linux/gpio.h> |
| 3085de6a | 13 | #include <linux/kernel.h> |
| 3085de6a | 14 | #include <linux/irq.h> |
| 3904a393 | 15 | #include <linux/io.h> |
| fdd8b079 | 16 | #include <mach/bridge-regs.h> |
| ce91574c | 17 | #include <plat/orion-gpio.h> |
| 6f088f1d | 18 | #include <plat/irq.h> |
| ab5ab9db | 19 | #include <asm/exception.h> |
| 42366666 | 20 | #include "common.h" |
| 3085de6a | 21 | |
| 278b45b0 AL |
22 | static int __initdata gpio0_irqs[4] = { |
| 23 | IRQ_ORION5X_GPIO_0_7, | |
| 24 | IRQ_ORION5X_GPIO_8_15, | |
| 25 | IRQ_ORION5X_GPIO_16_23, | |
| 26 | IRQ_ORION5X_GPIO_24_31, | |
| 27 | }; | |
| 3085de6a | 28 | |
| ab5ab9db TP |
29 | #ifdef CONFIG_MULTI_IRQ_HANDLER |
| 30 | /* | |
| 31 | * Compiling with both non-DT and DT support enabled, will | |
| 32 | * break asm irq handler used by non-DT boards. Therefore, | |
| 33 | * we provide a C-style irq handler even for non-DT boards, | |
| 34 | * if MULTI_IRQ_HANDLER is set. | |
| 35 | */ | |
| 36 | ||
| 37 | asmlinkage void | |
| 38 | __exception_irq_entry orion5x_legacy_handle_irq(struct pt_regs *regs) | |
| 39 | { | |
| 40 | u32 stat; | |
| 41 | ||
| 42 | stat = readl_relaxed(MAIN_IRQ_CAUSE); | |
| 43 | stat &= readl_relaxed(MAIN_IRQ_MASK); | |
| 44 | if (stat) { | |
| 5be9fc23 | 45 | unsigned int hwirq = 1 + __fls(stat); |
| ab5ab9db TP |
46 | handle_IRQ(hwirq, regs); |
| 47 | return; | |
| 48 | } | |
| 49 | } | |
| 50 | #endif | |
| 51 | ||
| 07332318 | 52 | void __init orion5x_init_irq(void) |
| 3085de6a | 53 | { |
| 5be9fc23 | 54 | orion_irq_init(1, MAIN_IRQ_MASK); |
| 3085de6a | 55 | |
| ab5ab9db TP |
56 | #ifdef CONFIG_MULTI_IRQ_HANDLER |
| 57 | set_handle_irq(orion5x_legacy_handle_irq); | |
| 58 | #endif | |
| 59 | ||
| 3085de6a | 60 | /* |
| 9eac6d0a | 61 | * Initialize gpiolib for GPIOs 0-31. |
| 3085de6a | 62 | */ |
| 3904a393 | 63 | orion_gpio_init(NULL, 0, 32, GPIO_VIRT_BASE, 0, |
| 278b45b0 | 64 | IRQ_ORION5X_GPIO_START, gpio0_irqs); |
| 3085de6a | 65 | } |