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authorRussell King <rmk@dyn-67.arm.linux.org.uk>2008-08-07 09:55:03 +0100
committerRussell King <rmk+kernel@arm.linux.org.uk>2008-08-07 09:55:03 +0100
commit4fb8af10d0fd09372d52966b76922b9e82bbc950 (patch)
treed240e4d40357583e3f3eb228dccf20122a5b31ed /arch/sh/boards/mach-landisk/psw.c
parentf44f82e8a20b98558486eb14497b2f71c78fa325 (diff)
parent64a99d2a8c3ed5c4e39f3ae1cc682aa8fd3977fc (diff)
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Merge git://git.kernel.org/pub/scm/linux/kernel/git/sam/kbuild-fixes
Diffstat (limited to 'arch/sh/boards/mach-landisk/psw.c')
-rw-r--r--arch/sh/boards/mach-landisk/psw.c143
1 files changed, 143 insertions, 0 deletions
diff --git a/arch/sh/boards/mach-landisk/psw.c b/arch/sh/boards/mach-landisk/psw.c
new file mode 100644
index 000000000000..e6b0efa098d1
--- /dev/null
+++ b/arch/sh/boards/mach-landisk/psw.c
@@ -0,0 +1,143 @@
+/*
+ * 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 & (~ctrl_inb(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 */
+ ctrl_outb(0x00, PA_PWRINT_CLR);
+
+ return IRQ_RETVAL(ret);
+}
+
+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));
+}
+module_init(psw_init);