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bb072c3cf2
Replace sysdev classes and struct sys_device objects used for "core" power management by Samsung platforms with struct syscore_ops objects that are simpler. This generally reduces the code size and the kernel memory footprint. It also is necessary for removing sysdevs entirely from the kernel in the future. Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Acked-by: Greg Kroah-Hartman <gregkh@suse.de> Acked-by: Kukjin Kim <kgene.kim@samsung.com>
139 lines
3.2 KiB
C
139 lines
3.2 KiB
C
/* linux/arch/arm/plat-s3c24xx/s3c244x-irq.c
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*
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* Copyright (c) 2003-2004 Simtec Electronics
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* Ben Dooks <ben@simtec.co.uk>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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*/
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#include <linux/init.h>
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#include <linux/module.h>
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#include <linux/interrupt.h>
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#include <linux/ioport.h>
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#include <linux/sysdev.h>
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#include <linux/io.h>
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#include <mach/hardware.h>
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#include <asm/irq.h>
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#include <asm/mach/irq.h>
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#include <mach/regs-irq.h>
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#include <mach/regs-gpio.h>
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#include <plat/cpu.h>
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#include <plat/pm.h>
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#include <plat/irq.h>
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/* camera irq */
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static void s3c_irq_demux_cam(unsigned int irq,
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struct irq_desc *desc)
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{
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unsigned int subsrc, submsk;
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/* read the current pending interrupts, and the mask
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* for what it is available */
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subsrc = __raw_readl(S3C2410_SUBSRCPND);
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submsk = __raw_readl(S3C2410_INTSUBMSK);
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subsrc &= ~submsk;
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subsrc >>= 11;
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subsrc &= 3;
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if (subsrc != 0) {
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if (subsrc & 1) {
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generic_handle_irq(IRQ_S3C2440_CAM_C);
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}
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if (subsrc & 2) {
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generic_handle_irq(IRQ_S3C2440_CAM_P);
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}
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}
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}
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#define INTMSK_CAM (1UL << (IRQ_CAM - IRQ_EINT0))
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static void
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s3c_irq_cam_mask(struct irq_data *data)
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{
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s3c_irqsub_mask(data->irq, INTMSK_CAM, 3 << 11);
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}
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static void
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s3c_irq_cam_unmask(struct irq_data *data)
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{
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s3c_irqsub_unmask(data->irq, INTMSK_CAM);
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}
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static void
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s3c_irq_cam_ack(struct irq_data *data)
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{
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s3c_irqsub_maskack(data->irq, INTMSK_CAM, 3 << 11);
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}
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static struct irq_chip s3c_irq_cam = {
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.irq_mask = s3c_irq_cam_mask,
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.irq_unmask = s3c_irq_cam_unmask,
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.irq_ack = s3c_irq_cam_ack,
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};
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static int s3c244x_irq_add(struct sys_device *sysdev)
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{
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unsigned int irqno;
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irq_set_chip_and_handler(IRQ_NFCON, &s3c_irq_level_chip,
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handle_level_irq);
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set_irq_flags(IRQ_NFCON, IRQF_VALID);
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/* add chained handler for camera */
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irq_set_chip_and_handler(IRQ_CAM, &s3c_irq_level_chip,
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handle_level_irq);
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irq_set_chained_handler(IRQ_CAM, s3c_irq_demux_cam);
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for (irqno = IRQ_S3C2440_CAM_C; irqno <= IRQ_S3C2440_CAM_P; irqno++) {
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irq_set_chip_and_handler(irqno, &s3c_irq_cam,
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handle_level_irq);
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set_irq_flags(irqno, IRQF_VALID);
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}
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return 0;
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}
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static struct sysdev_driver s3c2440_irq_driver = {
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.add = s3c244x_irq_add,
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};
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static int s3c2440_irq_init(void)
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{
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return sysdev_driver_register(&s3c2440_sysclass, &s3c2440_irq_driver);
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}
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arch_initcall(s3c2440_irq_init);
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static struct sysdev_driver s3c2442_irq_driver = {
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.add = s3c244x_irq_add,
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};
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static int s3c2442_irq_init(void)
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{
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return sysdev_driver_register(&s3c2442_sysclass, &s3c2442_irq_driver);
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}
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arch_initcall(s3c2442_irq_init);
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