omap24xx: Export certain n8x0 GPIO switches as input device

SVN-Revision: 23120

1 files changed, 98 insertions, 0 deletions

diff --git a/target/linux/omap24xx/patches-2.6.36/310-n8x0-gpioswitch-input.patch b/target/linux/omap24xx/patches-2.6.36/310-n8x0-gpioswitch-input.patch
new file mode 100644
index 0000000000..474829a64b
--- /dev/null
+++ b/target/linux/omap24xx/patches-2.6.36/310-n8x0-gpioswitch-input.patch
@@ -0,0 +1,98 @@
+---
+ arch/arm/mach-omap2/board-n8x0.c |   73 +++++++++++++++++++++++++++++++++++++++
+ 1 file changed, 73 insertions(+)
+
+--- linux-2.6.36-rc5.orig/arch/arm/mach-omap2/board-n8x0.c
++++ linux-2.6.36-rc5/arch/arm/mach-omap2/board-n8x0.c
+@@ -796,6 +796,77 @@ extern void n8x0_blizzard_init(void);
+ 
+ extern void n8x0_usb_init(void);
+ 
++struct gpio_switch_input_dev {
++	struct input_dev *idev;
++	unsigned int swcode;
++};
++
++static struct gpio_switch_input_dev *slide_input;
++static struct gpio_switch_input_dev *kblock_input;
++
++static void n8x0_gpio_switch_input_notify(struct gpio_switch_input_dev *gdev,
++					  int state)
++{
++	if (gdev) {
++		input_report_switch(gdev->idev, gdev->swcode, state);
++		input_sync(gdev->idev);
++	}
++}
++
++static void n8x0_slide_notify(void *data, int state)
++{
++	n8x0_gpio_switch_input_notify(slide_input, state);
++}
++
++static void n8x0_kb_lock_notify(void *data, int state)
++{
++	n8x0_gpio_switch_input_notify(kblock_input, state);
++}
++
++static struct gpio_switch_input_dev * __init gpioswitch_input_init(
++			const char *name,
++			unsigned int swcode)
++{
++	struct gpio_switch_input_dev *gdev;
++	int err;
++
++	gdev = kzalloc(sizeof(*gdev), GFP_KERNEL);
++	if (!gdev)
++		goto error;
++	gdev->swcode = swcode;
++
++	gdev->idev = input_allocate_device();
++	if (!gdev->idev)
++		goto err_free;
++
++	gdev->idev->evbit[0] = BIT_MASK(EV_SW);
++	gdev->idev->swbit[BIT_WORD(swcode)] = BIT_MASK(swcode);
++	gdev->idev->name = name;
++
++	err = input_register_device(gdev->idev);
++	if (err)
++		goto err_free_idev;
++
++	return gdev;
++
++err_free_idev:
++	input_free_device(gdev->idev);
++err_free:
++	kfree(gdev);
++error:
++	return NULL;
++}
++
++static int __init n8x0_gpio_switches_input_init(void)
++{
++	slide_input = gpioswitch_input_init("slide", SW_KEYPAD_SLIDE);
++	kblock_input = gpioswitch_input_init("kb_lock", SW_LID);
++	if (WARN_ON(!slide_input || !kblock_input))
++		return -ENODEV;
++	return 0;
++}
++late_initcall(n8x0_gpio_switches_input_init);
++
+ static struct omap_gpio_switch n8x0_gpio_switches[] __initdata = {
+ 	{
+ 		.name			= "headphone",
+@@ -817,11 +888,13 @@ static struct omap_gpio_switch n8x0_gpio
+ 		.gpio			= -1,
+ 		.debounce_rising	= 200,
+ 		.debounce_falling	= 200,
++		.notify			= n8x0_slide_notify,
+ 	}, {
+ 		.name			= "kb_lock",
+ 		.gpio			= -1,
+ 		.debounce_rising	= 200,
+ 		.debounce_falling	= 200,
++		.notify			= n8x0_kb_lock_notify,
+ 	},
+ };
+