Attachment 256791 Details for Bug 448004

[patch] [PATCH 01/02] Initial work to let ACPI buttons work over INPUT layer

PATCH_01_02_Initial_work_to_let_ACPI_buttons_work_over_INPUT_layer.patch (text/plain), 7.87 KB, created by Timo Hoenig on 2008-11-30 16:11:27 UTC

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Creator: Timo Hoenig

Created: 2008-11-30 16:11:27 UTC

Size: 7.87 KB

patch

obsolete

>From: Daniel Oliveira Nascimento <dnascimento@gmail.com>
>To: linux-acpi@vger.kernel.org, Nicolas Trangez <ikke@nicolast.be>
>Subject: [PATCH 01/02] Initial work to let ACPI buttons work over INPUT
>Date:	Sat, 29 Nov 2008 18:34:43 -0200
>
>Updated work of Nicolas Trangez to support INPUT layer in
>asus-laptop driver in git branch.
>
>Initial discussion can be found here:
>http://article.gmane.org/gmane.linux.acpi.acpi4asus.user/217
>
>---
> drivers/misc/asus-laptop.c |  183 +++++++++++++++++++++++++++++++++++++++++++-
> 1 files changed, 182 insertions(+), 1 deletions(-)
>
>diff --git a/drivers/misc/asus-laptop.c b/drivers/misc/asus-laptop.c
>index 8fb8b35..46db3b0 100644
>--- a/drivers/misc/asus-laptop.c
>+++ b/drivers/misc/asus-laptop.c
>@@ -24,6 +24,7 @@
>  *  http://sourceforge.net/projects/acpi4asus/
>  *
>  *  Credits:
>+ *  Nicolas Trangez  - Initial work to let ACPI buttons work over INPUT layer
>  *  Pontus Fuchs   - Helper functions, cleanup
>  *  Johann Wiesner - Small compile fixes
>  *  John Belmonte  - ACPI code for Toshiba laptop was a good starting point.
>@@ -46,6 +47,8 @@
> #include <acpi/acpi_drivers.h>
> #include <acpi/acpi_bus.h>
> #include <asm/uaccess.h>
>+#include <linux/input.h>
>+#include <linux/pci_ids.h>
> 
> #define ASUS_LAPTOP_VERSION "0.42"
> 
>@@ -250,6 +253,12 @@ ASUS_LED(rled, "record");
> ASUS_LED(pled, "phone");
> ASUS_LED(gled, "gaming");
> 
>+/* Input layer variables */
>+static u16 *hotk_keycode_map;
>+static int hotk_keycode_map_size;
>+static struct input_dev *asus_hotk_inputdev;
>+static int asus_hotk_inputdev_registered;
>+
> /*
>  * This function evaluates an ACPI method, given an int as parameter, the
>  * method is searched within the scope of the handle, can be NULL. The output
>@@ -722,6 +731,8 @@ static ssize_t store_gps(struct device *dev, struct device_attribute *attr,
> 
> static void asus_hotk_notify(acpi_handle handle, u32 event, void *data)
> {
>+	int keycode;
>+
> 	/* TODO Find a better way to handle events count. */
> 	if (!hotk)
> 		return;
>@@ -738,7 +749,28 @@ static void asus_hotk_notify(acpi_handle handle, u32 event, void *data)
> 		lcd_blank(FB_BLANK_POWERDOWN);
> 	}
> 
>-	acpi_bus_generate_proc_event(hotk->device, event,
>+	if (event < hotk_keycode_map_size) {
>+		keycode = hotk_keycode_map[event];
>+		printk("Keycode: %04x (%d)\n", keycode, keycode);
>+	} else {
>+		keycode = KEY_UNKNOWN;
>+		printk("Scancode %d out of keymap\n", event);
>+	}
>+
>+	if (keycode != KEY_RESERVED) {
>+		input_report_key(asus_hotk_inputdev, keycode, 1);
>+		if (keycode == KEY_UNKNOWN)
>+			input_event(asus_hotk_inputdev, EV_MSC, MSC_SCAN, event);
>+		input_sync(asus_hotk_inputdev);
>+
>+		input_report_key(asus_hotk_inputdev, keycode, 0);
>+		if (keycode == KEY_UNKNOWN)
>+			input_event(asus_hotk_inputdev, EV_MSC, MSC_SCAN, event);
>+		input_sync(asus_hotk_inputdev);
>+	}
>+
>+	if (keycode == KEY_RESERVED || keycode == KEY_UNKNOWN)
>+		acpi_bus_generate_proc_event(hotk->device, event,
> 				hotk->event_count[event % 128]++);
> 
> 	return;
>@@ -1071,6 +1103,16 @@ static int asus_hotk_remove(struct acpi_device *device, int type)
> 	return 0;
> }
> 
>+static void asus_hotk_exit(void)
>+{
>+	if (asus_hotk_inputdev) {
>+		if (asus_hotk_inputdev_registered)
>+			input_unregister_device(asus_hotk_inputdev);
>+		else
>+			input_free_device(asus_hotk_inputdev);
>+	}
>+}
>+
> static void asus_backlight_exit(void)
> {
> 	if (asus_backlight_device)
>@@ -1095,6 +1137,7 @@ static void __exit asus_laptop_exit(void)
> {
> 	asus_backlight_exit();
> 	asus_led_exit();
>+	asus_hotk_exit();
> 
> 	acpi_bus_unregister_driver(&asus_hotk_driver);
> 	sysfs_remove_group(&asuspf_device->dev.kobj, &asuspf_attribute_group);
>@@ -1102,6 +1145,138 @@ static void __exit asus_laptop_exit(void)
> 	platform_driver_unregister(&asuspf_driver);
> }
> 
>+static int asus_hotk_init(void)
>+{
>+	int ret, i;
>+
>+	static u16 keycode_map_1[] __initdata = {
>+		KEY_UNKNOWN, /* 0 */
>+		KEY_UNKNOWN, /* 1 */
>+		KEY_UNKNOWN, /* 2 */
>+		KEY_UNKNOWN, /* 3 */
>+		KEY_UNKNOWN, /* 4 */
>+		KEY_UNKNOWN, /* 5 */
>+		KEY_UNKNOWN, /* 6 */
>+		KEY_UNKNOWN, /* 7 */
>+		KEY_UNKNOWN, /* 8 */
>+		KEY_UNKNOWN, /* 9 */
>+		KEY_UNKNOWN, /* 10 */
>+		KEY_UNKNOWN, /* 11 */
>+		KEY_UNKNOWN, /* 12 */
>+		KEY_UNKNOWN, /* 13 */
>+		KEY_UNKNOWN, /* 14 */
>+		KEY_UNKNOWN, /* 15 */
>+		KEY_UNKNOWN, /* 16 */
>+		KEY_UNKNOWN, /* 17 */
>+		KEY_UNKNOWN, /* 18 */
>+		KEY_UNKNOWN, /* 19 */
>+		KEY_UNKNOWN, /* 20 */
>+		KEY_UNKNOWN, /* 21 */
>+		KEY_UNKNOWN, /* 22 */
>+		KEY_UNKNOWN, /* 23 */
>+		KEY_UNKNOWN, /* 24 */
>+		KEY_UNKNOWN, /* 25 */
>+		KEY_UNKNOWN, /* 26 */
>+		KEY_UNKNOWN, /* 27 */
>+		KEY_UNKNOWN, /* 28 */
>+		KEY_UNKNOWN, /* 29 */
>+		KEY_UNKNOWN, /* 30 */
>+		KEY_UNKNOWN, /* 31 */
>+		KEY_UNKNOWN, /* 32 */
>+		KEY_UNKNOWN, /* 33 */
>+		KEY_UNKNOWN, /* 34 */
>+		KEY_UNKNOWN, /* 35 */
>+		KEY_UNKNOWN, /* 36 */
>+		KEY_UNKNOWN, /* 37 */
>+		KEY_UNKNOWN, /* 38 */
>+		KEY_UNKNOWN, /* 39 */
>+		KEY_UNKNOWN, /* 40 */
>+		KEY_UNKNOWN, /* 41 */
>+		KEY_UNKNOWN, /* 42 */
>+		KEY_UNKNOWN, /* 43 */
>+		KEY_UNKNOWN, /* 44 */
>+		KEY_UNKNOWN, /* 45 */
>+		KEY_UNKNOWN, /* 46 */
>+		KEY_UNKNOWN, /* 47 */
>+		KEY_UNKNOWN, /* 48 */
>+		KEY_UNKNOWN, /* 49 */
>+		KEY_UNKNOWN, /* 50 */
>+		KEY_UNKNOWN, /* 51 */
>+		KEY_UNKNOWN, /* 52 */
>+		KEY_UNKNOWN, /* 53 */
>+		KEY_UNKNOWN, /* 54 */
>+		KEY_UNKNOWN, /* 55 */
>+		KEY_UNKNOWN, /* 56 */
>+		KEY_UNKNOWN, /* 57 */
>+		KEY_UNKNOWN, /* 58 */
>+		KEY_UNKNOWN, /* 59 */
>+		KEY_UNKNOWN, /* 60 */
>+		KEY_UNKNOWN, /* 61 */
>+		KEY_UNKNOWN, /* 62 */
>+		KEY_UNKNOWN, /* 63 */
>+		KEY_PREVIOUSSONG, /* 64 */
>+		KEY_NEXTSONG, /* 65 */
>+		KEY_UNKNOWN, /* 66 */
>+		KEY_STOP, /* 67 */
>+		KEY_UNKNOWN, /* 68 */
>+		KEY_PLAYPAUSE, /* 69 */
>+		KEY_UNKNOWN, /* 70 */
>+	};
>+
>+#define ASUS_HOTK_MAP_LEN       ARRAY_SIZE(keycode_map_1)
>+#define ASUS_HOTK_MAP_SIZE      sizeof(keycode_map_1)
>+#define ASUS_HOTK_MAP_TYPESIZE  sizeof(keycode_map_1[0])
>+
>+	/* Always use first keymap. TODO make this model-specific */
>+	hotk_keycode_map = kmalloc(ASUS_HOTK_MAP_SIZE, GFP_KERNEL);
>+	hotk_keycode_map_size = ASUS_HOTK_MAP_LEN;
>+	if (!hotk_keycode_map) {
>+		printk(ASUS_ERR "failed to allocate memory for keymap\n");
>+		return -ENOMEM;
>+	}
>+	printk(ASUS_NOTICE "using keycode_map_1\n");
>+	memcpy(hotk_keycode_map, &keycode_map_1, ASUS_HOTK_MAP_SIZE);
>+	/* TODO make sure no ACPI events are sent on known keycodes */
>+
>+	asus_hotk_inputdev = input_allocate_device();
>+	if (!asus_hotk_inputdev) {
>+		printk(ASUS_ERR "unable to allocate input device\n");
>+		return -ENOMEM;
>+	}
>+	asus_hotk_inputdev->name = "Asus Extra Buttons";
>+	asus_hotk_inputdev->phys = ASUS_HOTK_FILE "/input0";
>+	asus_hotk_inputdev->id.bustype = BUS_HOST;
>+	asus_hotk_inputdev->id.vendor = PCI_VENDOR_ID_ASUSTEK;
>+	/* TODO
>+	asus_hotk_inputdev->id.product =
>+	asus_hotk_inputdev->id.version =
>+	*/
>+
>+	set_bit(EV_KEY, asus_hotk_inputdev->evbit);
>+	set_bit(EV_MSC, asus_hotk_inputdev->evbit);
>+	set_bit(MSC_SCAN, asus_hotk_inputdev->mscbit);
>+	asus_hotk_inputdev->keycodesize = ASUS_HOTK_MAP_TYPESIZE;
>+	asus_hotk_inputdev->keycodemax = ASUS_HOTK_MAP_LEN;
>+	asus_hotk_inputdev->keycode = hotk_keycode_map;
>+	for (i = 0; i < ASUS_HOTK_MAP_LEN; i++) {
>+		if (hotk_keycode_map[i] != KEY_RESERVED) {
>+			set_bit(hotk_keycode_map[i], asus_hotk_inputdev->keybit);
>+		} /*else {
>+			if (i < sizeof(hotk_reserved_mask)*8)
>+				hotk_reserved_mask |= 1 << i;
>+		}*/
>+	}
>+
>+	ret = input_register_device(asus_hotk_inputdev);
>+	if (ret < 0) {
>+		printk(ASUS_ERR "unable to register input device\n");
>+		return ret;
>+	}
>+	asus_hotk_inputdev_registered = 1;
>+
>+	return 0;
>+}
>+
> static int asus_backlight_init(struct device *dev)
> {
> 	struct backlight_device *bd;
>@@ -1208,6 +1383,10 @@ static int __init asus_laptop_init(void)
> 
> 	dev = acpi_get_physical_device(hotk->device->handle);
> 
>+ 	result = asus_hotk_init();
>+	if (result)
>+		goto fail_hotk;
>+
> 	if (!acpi_video_backlight_support()) {
> 		result = asus_backlight_init(dev);
> 		if (result)
>@@ -1259,6 +1438,8 @@ static int __init asus_laptop_init(void)
> 
>       fail_backlight:
> 
>+      fail_hotk:
>+
> 	return result;
> }
> 
>-- 
>1.5.6
>
>
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