| /* |
| * Freescale STMP37XX/STMP378X common interrupt handling code |
| * |
| * Author: Vladislav Buzov <vbuzov@embeddedalley.com> |
| * |
| * Copyright 2008 Freescale Semiconductor, Inc. All Rights Reserved. |
| * Copyright 2008 Embedded Alley Solutions, Inc All Rights Reserved. |
| */ |
| |
| /* |
| * The code contained herein is licensed under the GNU General Public |
| * License. You may obtain a copy of the GNU General Public License |
| * Version 2 or later at the following locations: |
| * |
| * http://www.opensource.org/licenses/gpl-license.html |
| * http://www.gnu.org/copyleft/gpl.html |
| */ |
| #include <linux/init.h> |
| #include <linux/interrupt.h> |
| #include <linux/delay.h> |
| #include <linux/irq.h> |
| #include <linux/sysdev.h> |
| |
| #include <mach/stmp3xxx.h> |
| #include <mach/platform.h> |
| #include <mach/regs-icoll.h> |
| |
| void __init stmp3xxx_init_irq(struct irq_chip *chip) |
| { |
| unsigned int i, lv; |
| |
| /* Reset the interrupt controller */ |
| stmp3xxx_reset_block(REGS_ICOLL_BASE + HW_ICOLL_CTRL, true); |
| |
| /* Disable all interrupts initially */ |
| for (i = 0; i < NR_REAL_IRQS; i++) { |
| chip->mask(i); |
| set_irq_chip(i, chip); |
| set_irq_handler(i, handle_level_irq); |
| set_irq_flags(i, IRQF_VALID | IRQF_PROBE); |
| } |
| |
| /* Ensure vector is cleared */ |
| for (lv = 0; lv < 4; lv++) |
| __raw_writel(1 << lv, REGS_ICOLL_BASE + HW_ICOLL_LEVELACK); |
| __raw_writel(0, REGS_ICOLL_BASE + HW_ICOLL_VECTOR); |
| |
| /* Barrier */ |
| (void)__raw_readl(REGS_ICOLL_BASE + HW_ICOLL_STAT); |
| } |
| |
