diff options
Diffstat (limited to 'arch/mips/emma2rh/markeins/irq_markeins.c')
| -rw-r--r-- | arch/mips/emma2rh/markeins/irq_markeins.c | 197 |
1 files changed, 197 insertions, 0 deletions
diff --git a/arch/mips/emma2rh/markeins/irq_markeins.c b/arch/mips/emma2rh/markeins/irq_markeins.c new file mode 100644 index 00000000000..1783fdab645 --- /dev/null +++ b/arch/mips/emma2rh/markeins/irq_markeins.c @@ -0,0 +1,197 @@ +/* + * arch/mips/emma2rh/markeins/irq_markeins.c + * This file defines the irq handler for Mark-eins. + * + * Copyright (C) NEC Electronics Corporation 2004-2006 + * + * This file is based on the arch/mips/ddb5xxx/ddb5477/irq_5477.c + * + * Copyright 2001 MontaVista Software Inc. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + */ +#include <linux/interrupt.h> +#include <linux/irq.h> +#include <linux/types.h> +#include <linux/ptrace.h> + +#include <asm/debug.h> +#include <asm/emma2rh/emma2rh.h> + +static int emma2rh_sw_irq_base = -1; +static int emma2rh_gpio_irq_base = -1; + +void ll_emma2rh_sw_irq_enable(int reg); +void ll_emma2rh_sw_irq_disable(int reg); +void ll_emma2rh_gpio_irq_enable(int reg); +void ll_emma2rh_gpio_irq_disable(int reg); + +static void emma2rh_sw_irq_enable(unsigned int irq) +{ + ll_emma2rh_sw_irq_enable(irq - emma2rh_sw_irq_base); +} + +static void emma2rh_sw_irq_disable(unsigned int irq) +{ + ll_emma2rh_sw_irq_disable(irq - emma2rh_sw_irq_base); +} + +static unsigned int emma2rh_sw_irq_startup(unsigned int irq) +{ + emma2rh_sw_irq_enable(irq); + return 0; +} + +#define emma2rh_sw_irq_shutdown emma2rh_sw_irq_disable + +static void emma2rh_sw_irq_ack(unsigned int irq) +{ + ll_emma2rh_sw_irq_disable(irq - emma2rh_sw_irq_base); +} + +static void emma2rh_sw_irq_end(unsigned int irq) +{ + if (!(irq_desc[irq].status & (IRQ_DISABLED | IRQ_INPROGRESS))) + ll_emma2rh_sw_irq_enable(irq - emma2rh_sw_irq_base); +} + +hw_irq_controller emma2rh_sw_irq_controller = { + .typename = "emma2rh_sw_irq", + .startup = emma2rh_sw_irq_startup, + .shutdown = emma2rh_sw_irq_shutdown, + .enable = emma2rh_sw_irq_enable, + .disable = emma2rh_sw_irq_disable, + .ack = emma2rh_sw_irq_ack, + .end = emma2rh_sw_irq_end, + .set_affinity = NULL, +}; + +void emma2rh_sw_irq_init(u32 irq_base) +{ + u32 i; + + for (i = irq_base; i < irq_base + NUM_EMMA2RH_IRQ_SW; i++) { + irq_desc[i].status = IRQ_DISABLED; + irq_desc[i].action = NULL; + irq_desc[i].depth = 2; + irq_desc[i].handler = &emma2rh_sw_irq_controller; + } + + emma2rh_sw_irq_base = irq_base; +} + +void ll_emma2rh_sw_irq_enable(int irq) +{ + u32 reg; + + db_assert(irq >= 0); + db_assert(irq < NUM_EMMA2RH_IRQ_SW); + + reg = emma2rh_in32(EMMA2RH_BHIF_SW_INT_EN); + reg |= 1 << irq; + emma2rh_out32(EMMA2RH_BHIF_SW_INT_EN, reg); +} + +void ll_emma2rh_sw_irq_disable(int irq) +{ + u32 reg; + + db_assert(irq >= 0); + db_assert(irq < 32); + + reg = emma2rh_in32(EMMA2RH_BHIF_SW_INT_EN); + reg &= ~(1 << irq); + emma2rh_out32(EMMA2RH_BHIF_SW_INT_EN, reg); +} + +static void emma2rh_gpio_irq_enable(unsigned int irq) +{ + ll_emma2rh_gpio_irq_enable(irq - emma2rh_gpio_irq_base); +} + +static void emma2rh_gpio_irq_disable(unsigned int irq) +{ + ll_emma2rh_gpio_irq_disable(irq - emma2rh_gpio_irq_base); +} + +static unsigned int emma2rh_gpio_irq_startup(unsigned int irq) +{ + emma2rh_gpio_irq_enable(irq); + return 0; +} + +#define emma2rh_gpio_irq_shutdown emma2rh_gpio_irq_disable + +static void emma2rh_gpio_irq_ack(unsigned int irq) +{ + irq -= emma2rh_gpio_irq_base; + emma2rh_out32(EMMA2RH_GPIO_INT_ST, ~(1 << irq)); + ll_emma2rh_gpio_irq_disable(irq); +} + +static void emma2rh_gpio_irq_end(unsigned int irq) +{ + if (!(irq_desc[irq].status & (IRQ_DISABLED | IRQ_INPROGRESS))) + ll_emma2rh_gpio_irq_enable(irq - emma2rh_gpio_irq_base); +} + +hw_irq_controller emma2rh_gpio_irq_controller = { + .typename = "emma2rh_gpio_irq", + .startup = emma2rh_gpio_irq_startup, + .shutdown = emma2rh_gpio_irq_shutdown, + .enable = emma2rh_gpio_irq_enable, + .disable = emma2rh_gpio_irq_disable, + .ack = emma2rh_gpio_irq_ack, + .end = emma2rh_gpio_irq_end, + .set_affinity = NULL, +}; + +void emma2rh_gpio_irq_init(u32 irq_base) +{ + u32 i; + + for (i = irq_base; i < irq_base + NUM_EMMA2RH_IRQ_GPIO; i++) { + irq_desc[i].status = IRQ_DISABLED; + irq_desc[i].action = NULL; + irq_desc[i].depth = 2; + irq_desc[i].handler = &emma2rh_gpio_irq_controller; + } + + emma2rh_gpio_irq_base = irq_base; +} + +void ll_emma2rh_gpio_irq_enable(int irq) +{ + u32 reg; + + db_assert(irq >= 0); + db_assert(irq < NUM_EMMA2RH_IRQ_GPIO); + + reg = emma2rh_in32(EMMA2RH_GPIO_INT_MASK); + reg |= 1 << irq; + emma2rh_out32(EMMA2RH_GPIO_INT_MASK, reg); +} + +void ll_emma2rh_gpio_irq_disable(int irq) +{ + u32 reg; + + db_assert(irq >= 0); + db_assert(irq < NUM_EMMA2RH_IRQ_GPIO); + + reg = emma2rh_in32(EMMA2RH_GPIO_INT_MASK); + reg &= ~(1 << irq); + emma2rh_out32(EMMA2RH_GPIO_INT_MASK, reg); +} |