diff options
Diffstat (limited to 'arch/arm/mach-mxs/icoll.c')
| -rw-r--r-- | arch/arm/mach-mxs/icoll.c | 125 | 
1 files changed, 0 insertions, 125 deletions
diff --git a/arch/arm/mach-mxs/icoll.c b/arch/arm/mach-mxs/icoll.c deleted file mode 100644 index e26eeba4659..00000000000 --- a/arch/arm/mach-mxs/icoll.c +++ /dev/null @@ -1,125 +0,0 @@ -/* - * Copyright (C) 2009-2010 Freescale Semiconductor, Inc. All Rights Reserved. - * - * 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., - * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. - */ - -#include <linux/kernel.h> -#include <linux/init.h> -#include <linux/irq.h> -#include <linux/irqdomain.h> -#include <linux/io.h> -#include <linux/of.h> -#include <linux/of_irq.h> -#include <asm/exception.h> -#include <mach/mxs.h> -#include <mach/common.h> - -#define HW_ICOLL_VECTOR				0x0000 -#define HW_ICOLL_LEVELACK			0x0010 -#define HW_ICOLL_CTRL				0x0020 -#define HW_ICOLL_STAT_OFFSET			0x0070 -#define HW_ICOLL_INTERRUPTn_SET(n)		(0x0124 + (n) * 0x10) -#define HW_ICOLL_INTERRUPTn_CLR(n)		(0x0128 + (n) * 0x10) -#define BM_ICOLL_INTERRUPTn_ENABLE		0x00000004 -#define BV_ICOLL_LEVELACK_IRQLEVELACK__LEVEL0	0x1 - -#define ICOLL_NUM_IRQS		128 - -static void __iomem *icoll_base = MXS_IO_ADDRESS(MXS_ICOLL_BASE_ADDR); -static struct irq_domain *icoll_domain; - -static void icoll_ack_irq(struct irq_data *d) -{ -	/* -	 * The Interrupt Collector is able to prioritize irqs. -	 * Currently only level 0 is used. So acking can use -	 * BV_ICOLL_LEVELACK_IRQLEVELACK__LEVEL0 unconditionally. -	 */ -	__raw_writel(BV_ICOLL_LEVELACK_IRQLEVELACK__LEVEL0, -			icoll_base + HW_ICOLL_LEVELACK); -} - -static void icoll_mask_irq(struct irq_data *d) -{ -	__raw_writel(BM_ICOLL_INTERRUPTn_ENABLE, -			icoll_base + HW_ICOLL_INTERRUPTn_CLR(d->hwirq)); -} - -static void icoll_unmask_irq(struct irq_data *d) -{ -	__raw_writel(BM_ICOLL_INTERRUPTn_ENABLE, -			icoll_base + HW_ICOLL_INTERRUPTn_SET(d->hwirq)); -} - -static struct irq_chip mxs_icoll_chip = { -	.irq_ack = icoll_ack_irq, -	.irq_mask = icoll_mask_irq, -	.irq_unmask = icoll_unmask_irq, -}; - -asmlinkage void __exception_irq_entry icoll_handle_irq(struct pt_regs *regs) -{ -	u32 irqnr; - -	do { -		irqnr = __raw_readl(icoll_base + HW_ICOLL_STAT_OFFSET); -		if (irqnr != 0x7f) { -			__raw_writel(irqnr, icoll_base + HW_ICOLL_VECTOR); -			irqnr = irq_find_mapping(icoll_domain, irqnr); -			handle_IRQ(irqnr, regs); -			continue; -		} -		break; -	} while (1); -} - -static int icoll_irq_domain_map(struct irq_domain *d, unsigned int virq, -				irq_hw_number_t hw) -{ -	irq_set_chip_and_handler(virq, &mxs_icoll_chip, handle_level_irq); -	set_irq_flags(virq, IRQF_VALID); - -	return 0; -} - -static struct irq_domain_ops icoll_irq_domain_ops = { -	.map = icoll_irq_domain_map, -	.xlate = irq_domain_xlate_onecell, -}; - -static void __init icoll_of_init(struct device_node *np, -			  struct device_node *interrupt_parent) -{ -	/* -	 * Interrupt Collector reset, which initializes the priority -	 * for each irq to level 0. -	 */ -	mxs_reset_block(icoll_base + HW_ICOLL_CTRL); - -	icoll_domain = irq_domain_add_linear(np, ICOLL_NUM_IRQS, -					     &icoll_irq_domain_ops, NULL); -	WARN_ON(!icoll_domain); -} - -static const struct of_device_id icoll_of_match[] __initconst = { -	{.compatible = "fsl,icoll", .data = icoll_of_init}, -	{ /* sentinel */ } -}; - -void __init icoll_init_irq(void) -{ -	of_irq_init(icoll_of_match); -}  |