dmitry pervushin | 355c471 | 2006-05-21 14:53:06 +0400 | [diff] [blame] | 1 | /* |
| 2 | * arch/mips/emma2rh/markeins/irq_markeins.c |
| 3 | * This file defines the irq handler for Mark-eins. |
| 4 | * |
| 5 | * Copyright (C) NEC Electronics Corporation 2004-2006 |
| 6 | * |
| 7 | * This file is based on the arch/mips/ddb5xxx/ddb5477/irq_5477.c |
| 8 | * |
| 9 | * Copyright 2001 MontaVista Software Inc. |
| 10 | * |
| 11 | * This program is free software; you can redistribute it and/or modify |
| 12 | * it under the terms of the GNU General Public License as published by |
| 13 | * the Free Software Foundation; either version 2 of the License, or |
| 14 | * (at your option) any later version. |
| 15 | * |
| 16 | * This program is distributed in the hope that it will be useful, |
| 17 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 18 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 19 | * GNU General Public License for more details. |
| 20 | * |
| 21 | * You should have received a copy of the GNU General Public License |
| 22 | * along with this program; if not, write to the Free Software |
| 23 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| 24 | */ |
| 25 | #include <linux/interrupt.h> |
| 26 | #include <linux/irq.h> |
| 27 | #include <linux/types.h> |
| 28 | #include <linux/ptrace.h> |
| 29 | |
| 30 | #include <asm/debug.h> |
| 31 | #include <asm/emma2rh/emma2rh.h> |
| 32 | |
| 33 | static int emma2rh_sw_irq_base = -1; |
| 34 | static int emma2rh_gpio_irq_base = -1; |
| 35 | |
| 36 | void ll_emma2rh_sw_irq_enable(int reg); |
| 37 | void ll_emma2rh_sw_irq_disable(int reg); |
| 38 | void ll_emma2rh_gpio_irq_enable(int reg); |
| 39 | void ll_emma2rh_gpio_irq_disable(int reg); |
| 40 | |
| 41 | static void emma2rh_sw_irq_enable(unsigned int irq) |
| 42 | { |
| 43 | ll_emma2rh_sw_irq_enable(irq - emma2rh_sw_irq_base); |
| 44 | } |
| 45 | |
| 46 | static void emma2rh_sw_irq_disable(unsigned int irq) |
| 47 | { |
| 48 | ll_emma2rh_sw_irq_disable(irq - emma2rh_sw_irq_base); |
| 49 | } |
| 50 | |
Ralf Baechle | 94dee17 | 2006-07-02 14:41:42 +0100 | [diff] [blame] | 51 | struct irq_chip emma2rh_sw_irq_controller = { |
Atsushi Nemoto | 70d21cd | 2007-01-15 00:07:25 +0900 | [diff] [blame] | 52 | .name = "emma2rh_sw_irq", |
Atsushi Nemoto | 1603b5a | 2006-11-02 02:08:36 +0900 | [diff] [blame] | 53 | .ack = emma2rh_sw_irq_disable, |
| 54 | .mask = emma2rh_sw_irq_disable, |
| 55 | .mask_ack = emma2rh_sw_irq_disable, |
| 56 | .unmask = emma2rh_sw_irq_enable, |
dmitry pervushin | 355c471 | 2006-05-21 14:53:06 +0400 | [diff] [blame] | 57 | }; |
| 58 | |
| 59 | void emma2rh_sw_irq_init(u32 irq_base) |
| 60 | { |
| 61 | u32 i; |
| 62 | |
Atsushi Nemoto | 1603b5a | 2006-11-02 02:08:36 +0900 | [diff] [blame] | 63 | for (i = irq_base; i < irq_base + NUM_EMMA2RH_IRQ_SW; i++) |
Atsushi Nemoto | 1417836 | 2006-11-14 01:13:18 +0900 | [diff] [blame] | 64 | set_irq_chip_and_handler(i, &emma2rh_sw_irq_controller, |
| 65 | handle_level_irq); |
dmitry pervushin | 355c471 | 2006-05-21 14:53:06 +0400 | [diff] [blame] | 66 | |
| 67 | emma2rh_sw_irq_base = irq_base; |
| 68 | } |
| 69 | |
| 70 | void ll_emma2rh_sw_irq_enable(int irq) |
| 71 | { |
| 72 | u32 reg; |
| 73 | |
| 74 | db_assert(irq >= 0); |
| 75 | db_assert(irq < NUM_EMMA2RH_IRQ_SW); |
| 76 | |
| 77 | reg = emma2rh_in32(EMMA2RH_BHIF_SW_INT_EN); |
| 78 | reg |= 1 << irq; |
| 79 | emma2rh_out32(EMMA2RH_BHIF_SW_INT_EN, reg); |
| 80 | } |
| 81 | |
| 82 | void ll_emma2rh_sw_irq_disable(int irq) |
| 83 | { |
| 84 | u32 reg; |
| 85 | |
| 86 | db_assert(irq >= 0); |
| 87 | db_assert(irq < 32); |
| 88 | |
| 89 | reg = emma2rh_in32(EMMA2RH_BHIF_SW_INT_EN); |
| 90 | reg &= ~(1 << irq); |
| 91 | emma2rh_out32(EMMA2RH_BHIF_SW_INT_EN, reg); |
| 92 | } |
| 93 | |
| 94 | static void emma2rh_gpio_irq_enable(unsigned int irq) |
| 95 | { |
| 96 | ll_emma2rh_gpio_irq_enable(irq - emma2rh_gpio_irq_base); |
| 97 | } |
| 98 | |
| 99 | static void emma2rh_gpio_irq_disable(unsigned int irq) |
| 100 | { |
| 101 | ll_emma2rh_gpio_irq_disable(irq - emma2rh_gpio_irq_base); |
| 102 | } |
| 103 | |
dmitry pervushin | 355c471 | 2006-05-21 14:53:06 +0400 | [diff] [blame] | 104 | static void emma2rh_gpio_irq_ack(unsigned int irq) |
| 105 | { |
| 106 | irq -= emma2rh_gpio_irq_base; |
| 107 | emma2rh_out32(EMMA2RH_GPIO_INT_ST, ~(1 << irq)); |
| 108 | ll_emma2rh_gpio_irq_disable(irq); |
| 109 | } |
| 110 | |
| 111 | static void emma2rh_gpio_irq_end(unsigned int irq) |
| 112 | { |
| 113 | if (!(irq_desc[irq].status & (IRQ_DISABLED | IRQ_INPROGRESS))) |
| 114 | ll_emma2rh_gpio_irq_enable(irq - emma2rh_gpio_irq_base); |
| 115 | } |
| 116 | |
Ralf Baechle | 94dee17 | 2006-07-02 14:41:42 +0100 | [diff] [blame] | 117 | struct irq_chip emma2rh_gpio_irq_controller = { |
Atsushi Nemoto | 70d21cd | 2007-01-15 00:07:25 +0900 | [diff] [blame] | 118 | .name = "emma2rh_gpio_irq", |
dmitry pervushin | 355c471 | 2006-05-21 14:53:06 +0400 | [diff] [blame] | 119 | .ack = emma2rh_gpio_irq_ack, |
Atsushi Nemoto | 1603b5a | 2006-11-02 02:08:36 +0900 | [diff] [blame] | 120 | .mask = emma2rh_gpio_irq_disable, |
| 121 | .mask_ack = emma2rh_gpio_irq_ack, |
| 122 | .unmask = emma2rh_gpio_irq_enable, |
dmitry pervushin | 355c471 | 2006-05-21 14:53:06 +0400 | [diff] [blame] | 123 | .end = emma2rh_gpio_irq_end, |
dmitry pervushin | 355c471 | 2006-05-21 14:53:06 +0400 | [diff] [blame] | 124 | }; |
| 125 | |
| 126 | void emma2rh_gpio_irq_init(u32 irq_base) |
| 127 | { |
| 128 | u32 i; |
| 129 | |
Atsushi Nemoto | 1603b5a | 2006-11-02 02:08:36 +0900 | [diff] [blame] | 130 | for (i = irq_base; i < irq_base + NUM_EMMA2RH_IRQ_GPIO; i++) |
| 131 | set_irq_chip(i, &emma2rh_gpio_irq_controller); |
dmitry pervushin | 355c471 | 2006-05-21 14:53:06 +0400 | [diff] [blame] | 132 | |
| 133 | emma2rh_gpio_irq_base = irq_base; |
| 134 | } |
| 135 | |
| 136 | void ll_emma2rh_gpio_irq_enable(int irq) |
| 137 | { |
| 138 | u32 reg; |
| 139 | |
| 140 | db_assert(irq >= 0); |
| 141 | db_assert(irq < NUM_EMMA2RH_IRQ_GPIO); |
| 142 | |
| 143 | reg = emma2rh_in32(EMMA2RH_GPIO_INT_MASK); |
| 144 | reg |= 1 << irq; |
| 145 | emma2rh_out32(EMMA2RH_GPIO_INT_MASK, reg); |
| 146 | } |
| 147 | |
| 148 | void ll_emma2rh_gpio_irq_disable(int irq) |
| 149 | { |
| 150 | u32 reg; |
| 151 | |
| 152 | db_assert(irq >= 0); |
| 153 | db_assert(irq < NUM_EMMA2RH_IRQ_GPIO); |
| 154 | |
| 155 | reg = emma2rh_in32(EMMA2RH_GPIO_INT_MASK); |
| 156 | reg &= ~(1 << irq); |
| 157 | emma2rh_out32(EMMA2RH_GPIO_INT_MASK, reg); |
| 158 | } |