1 files changed, 143 insertions, 0 deletions
diff --git a/arch/sh/boards/landisk/psw.c b/arch/sh/boards/landisk/psw.c
new file mode 100644
index 0000000..5a9b70b
--- /dev/null
+++ b/arch/sh/boards/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 <asm/landisk/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);