cregit-Linux how code gets into the kernel

Release 4.7 arch/sh/boards/mach-landisk/psw.c

/*
 * arch/sh/boards/landisk/psw.c
 *
 * push switch support for LANDISK and USL-5P
 *
 * Copyright (C) 2006-2007  Paul Mundt
 * Copyright (C) 2007  kogiidena
 *
 * This file is subject to the terms and conditions of the GNU General Public
 * License.  See the file "COPYING" in the main directory of this archive
 * for more details.
 */
#include <linux/io.h>
#include <linux/init.h>
#include <linux/interrupt.h>
#include <linux/platform_device.h>
#include <mach-landisk/mach/iodata_landisk.h>
#include <asm/push-switch.h>


static irqreturn_t psw_irq_handler(int irq, void *arg) { struct platform_device *pdev = arg; struct push_switch *psw = platform_get_drvdata(pdev); struct push_switch_platform_info *psw_info = pdev->dev.platform_data; unsigned int sw_value; int ret = 0; sw_value = (0x0ff & (~__raw_readb(PA_STATUS))); /* Nothing to do if there's no state change */ if (psw->state) { ret = 1; goto out; } /* Figure out who raised it */ if (sw_value & (1 << psw_info->bit)) { psw->state = 1; mod_timer(&psw->debounce, jiffies + 50); ret = 1; } out: /* Clear the switch IRQs */ __raw_writeb(0x00, PA_PWRINT_CLR); return IRQ_RETVAL(ret); }

Contributors

PersonTokensPropCommitsCommitProp
kogiidenakogiidena13198.50%150.00%
paul mundtpaul mundt21.50%150.00%
Total133100.00%2100.00%

static struct resource psw_power_resources[] = { [0] = { .start = IRQ_POWER, .flags = IORESOURCE_IRQ, }, }; static struct resource psw_usl5p_resources[] = { [0] = { .start = IRQ_BUTTON, .flags = IORESOURCE_IRQ, }, }; static struct push_switch_platform_info psw_power_platform_data = { .name = "psw_power", .bit = 4, .irq_flags = IRQF_SHARED, .irq_handler = psw_irq_handler, }; static struct push_switch_platform_info psw1_platform_data = { .name = "psw1", .bit = 0, .irq_flags = IRQF_SHARED, .irq_handler = psw_irq_handler, }; static struct push_switch_platform_info psw2_platform_data = { .name = "psw2", .bit = 2, .irq_flags = IRQF_SHARED, .irq_handler = psw_irq_handler, }; static struct push_switch_platform_info psw3_platform_data = { .name = "psw3", .bit = 1, .irq_flags = IRQF_SHARED, .irq_handler = psw_irq_handler, }; static struct platform_device psw_power_switch_device = { .name = "push-switch", .id = 0, .num_resources = ARRAY_SIZE(psw_power_resources), .resource = psw_power_resources, .dev = { .platform_data = &psw_power_platform_data, }, }; static struct platform_device psw1_switch_device = { .name = "push-switch", .id = 1, .num_resources = ARRAY_SIZE(psw_usl5p_resources), .resource = psw_usl5p_resources, .dev = { .platform_data = &psw1_platform_data, }, }; static struct platform_device psw2_switch_device = { .name = "push-switch", .id = 2, .num_resources = ARRAY_SIZE(psw_usl5p_resources), .resource = psw_usl5p_resources, .dev = { .platform_data = &psw2_platform_data, }, }; static struct platform_device psw3_switch_device = { .name = "push-switch", .id = 3, .num_resources = ARRAY_SIZE(psw_usl5p_resources), .resource = psw_usl5p_resources, .dev = { .platform_data = &psw3_platform_data, }, }; static struct platform_device *psw_devices[] = { &psw_power_switch_device, &psw1_switch_device, &psw2_switch_device, &psw3_switch_device, };
static int __init psw_init(void) { return platform_add_devices(psw_devices, ARRAY_SIZE(psw_devices)); }

Contributors

PersonTokensPropCommitsCommitProp
kogiidenakogiidena20100.00%1100.00%
Total20100.00%1100.00%

device_initcall(psw_init);

Overall Contributors

PersonTokensPropCommitsCommitProp
kogiidenakogiidena51499.23%125.00%
paul mundtpaul mundt30.58%250.00%
paul gortmakerpaul gortmaker10.19%125.00%
Total518100.00%4100.00%
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