Lakka-LibreELEC/packages/linux/patches/raspberrypi/linux-051-ouya_controller_support.patch

commit 5a596921a4636e62843a59b7eab7b87b70a6d296
Author: Lukas Rusak <lorusak@gmail.com>
Date:   Sun May 6 22:03:11 2018 -0700

    HID: add ouya HID driver
    
    This driver is a simple implementation to get the controller working and mapped properly.
    This driver does not include functionality for the touchpad (yet). The original driver
    was taken from from the ouya linux tree and has been simplified. It seems there may have
    been other versions of the controller present that had a broken report descriptor. I have
    removed that for now.

diff --git a/drivers/hid/Kconfig b/drivers/hid/Kconfig
index 60252fd796f6..6be2c454e72e 100644
--- a/drivers/hid/Kconfig
+++ b/drivers/hid/Kconfig
@@ -659,6 +659,12 @@ config HID_ORTEK
 	   - Ortek WKB-2000
 	   - Skycable wireless presenter
 
+config HID_OUYA
+	tristate "OUYA Game Controller"
+	depends on USB_HID
+	help
+	  Support for OUYA Game Controller.
+
 config HID_PANTHERLORD
 	tristate "Pantherlord/GreenAsia game controller"
 	depends on HID
diff --git a/drivers/hid/Makefile b/drivers/hid/Makefile
index 17a8bd97da9d..4425890934e4 100644
--- a/drivers/hid/Makefile
+++ b/drivers/hid/Makefile
@@ -71,6 +71,7 @@ obj-$(CONFIG_HID_MULTITOUCH)	+= hid-multitouch.o
 obj-$(CONFIG_HID_NTI)			+= hid-nti.o
 obj-$(CONFIG_HID_NTRIG)		+= hid-ntrig.o
 obj-$(CONFIG_HID_ORTEK)		+= hid-ortek.o
+obj-$(CONFIG_HID_OUYA)		+= hid-ouya.o
 obj-$(CONFIG_HID_PRODIKEYS)	+= hid-prodikeys.o
 obj-$(CONFIG_HID_PANTHERLORD)	+= hid-pl.o
 obj-$(CONFIG_HID_PENMOUNT)	+= hid-penmount.o
diff --git a/drivers/hid/hid-ids.h b/drivers/hid/hid-ids.h
index 0b5cc910f62e..0528efb825fa 100644
--- a/drivers/hid/hid-ids.h
+++ b/drivers/hid/hid-ids.h
@@ -859,6 +859,9 @@
 #define USB_DEVICE_ID_ORTEK_WKB2000	0x2000
 #define USB_DEVICE_ID_ORTEK_IHOME_IMAC_A210S	0x8003
 
+#define USB_VENDOR_ID_OUYA 0x2836
+#define USB_DEVICE_ID_OUYA_CONTROLLER 0x0001
+
 #define USB_VENDOR_ID_PLANTRONICS	0x047f
 
 #define USB_VENDOR_ID_PANASONIC		0x04da
diff --git a/drivers/hid/hid-ouya.c b/drivers/hid/hid-ouya.c
new file mode 100644
index 000000000000..4344a47b40af
--- /dev/null
+++ b/drivers/hid/hid-ouya.c
@@ -0,0 +1,131 @@
+/*
+ *  HID driver for OUYA Game Controller(s)
+ *
+ *  Copyright (c) 2013 OUYA
+ *  Copyright (c) 2013 Gregorios Leach <optikflux@gmail.com>
+ *  Copyright (c) 2018 Lukas Rusak <lorusak@gmail.com>
+ */
+
+#include <linux/device.h>
+#include <linux/hid.h>
+#include <linux/input.h>
+#include <linux/module.h>
+
+#include "hid-ids.h"
+
+static const unsigned int ouya_absmap[] = {
+	[0x30] = ABS_X,		/* left stick X */
+	[0x31] = ABS_Y,		/* left stick Y */
+	[0x32] = ABS_Z,		/* L2 */
+	[0x33] = ABS_RX,	/* right stick X */
+	[0x34] = ABS_RY,	/* right stick Y */
+	[0x35] = ABS_RZ,	/* R2 */
+};
+
+static const unsigned int ouya_keymap[] = {
+	[0x1] = BTN_SOUTH,	/* O */
+	[0x2] = BTN_WEST,	/* U */
+	[0x3] = BTN_NORTH,	/* Y */
+	[0x4] = BTN_EAST,	/* A */
+	[0x5] = BTN_TL,		/* L1 */
+	[0x6] = BTN_TR,		/* R1 */
+	[0x7] = BTN_THUMBL,	/* L3 */
+	[0x8] = BTN_THUMBR,	/* R3 */
+	[0x9] = BTN_DPAD_UP,	/* Up */
+	[0xa] = BTN_DPAD_DOWN,	/* Down */
+	[0xb] = BTN_DPAD_LEFT,	/* Left */
+	[0xc] = BTN_DPAD_RIGHT, /* Right */
+	[0xd] = BTN_TL2,	/* L2 */
+	[0xe] = BTN_TR2,	/* R2 */
+	[0xf] = BTN_MODE,	/* Power */
+};
+
+static int ouya_input_mapping(struct hid_device *hdev, struct hid_input *hi,
+			       struct hid_field *field, struct hid_usage *usage,
+			       unsigned long **bit, int *max)
+{
+	if ((usage->hid & HID_USAGE_PAGE) == HID_UP_BUTTON) {
+		unsigned int key = usage->hid & HID_USAGE;
+
+		if (key >= ARRAY_SIZE(ouya_keymap))
+			return -1;
+
+		key = ouya_keymap[key];
+		hid_map_usage_clear(hi, usage, bit, max, EV_KEY, key);
+
+		return 1;
+
+	} else if ((usage->hid & HID_USAGE_PAGE) == HID_UP_GENDESK) {
+		unsigned int abs = usage->hid & HID_USAGE;
+
+		if (abs >= ARRAY_SIZE(ouya_absmap))
+			return -1;
+
+		abs = ouya_absmap[abs];
+		hid_map_usage_clear(hi, usage, bit, max, EV_ABS, abs);
+
+		return 1;
+	}
+
+	return 0;
+}
+
+static int ouya_probe(struct hid_device *hdev, const struct hid_device_id *id)
+{
+	int ret;
+
+	ret = hid_parse(hdev);
+	if (ret) {
+		hid_err(hdev, "parse failed\n");
+		goto err_free;
+	}
+
+	ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT | HID_CONNECT_HIDDEV_FORCE);
+	if (ret) {
+		hid_err(hdev, "hw start failed\n");
+		goto err_free;
+	}
+
+	return 0;
+
+err_free:
+	return ret;
+}
+
+static void ouya_remove(struct hid_device *hdev)
+{
+	hid_hw_stop(hdev);
+	kfree(hid_get_drvdata(hdev));
+}
+
+static const struct hid_device_id ouya_devices[] = {
+	{ HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_OUYA, USB_DEVICE_ID_OUYA_CONTROLLER) },
+	{ }
+};
+MODULE_DEVICE_TABLE(hid, ouya_devices);
+
+static struct hid_driver ouya_driver = {
+	.name = "ouya",
+	.id_table = ouya_devices,
+	.input_mapping = ouya_input_mapping,
+	.probe = ouya_probe,
+	.remove = ouya_remove,
+};
+
+static int __init ouya_init(void)
+{
+	return hid_register_driver(&ouya_driver);
+}
+
+static void __exit ouya_exit(void)
+{
+	hid_unregister_driver(&ouya_driver);
+}
+
+module_init(ouya_init);
+module_exit(ouya_exit);
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Lukas Rusak <lorusak@gmail.com>");
+MODULE_AUTHOR("Gregorios Leach <optikflux@gmail.com>");
+MODULE_DESCRIPTION("Ouya Controller Driver");
diff --git a/drivers/hid/hid-quirks.c b/drivers/hid/hid-quirks.c
index 587e2681a53f..b5adc13e0df1 100644
--- a/drivers/hid/hid-quirks.c
+++ b/drivers/hid/hid-quirks.c
@@ -538,6 +538,9 @@ static const struct hid_device_id hid_have_special_driver[] = {
 	{ HID_USB_DEVICE(USB_VENDOR_ID_ORTEK, USB_DEVICE_ID_ORTEK_IHOME_IMAC_A210S) },
 	{ HID_USB_DEVICE(USB_VENDOR_ID_SKYCABLE, USB_DEVICE_ID_SKYCABLE_WIRELESS_PRESENTER) },
 #endif
+#if IS_ENABLED(CONFIG_HID_OUYA)
+	{ HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_OUYA, USB_DEVICE_ID_OUYA_CONTROLLER) },
+#endif
 #if IS_ENABLED(CONFIG_HID_PANTHERLORD)
 	{ HID_USB_DEVICE(USB_VENDOR_ID_GAMERON, USB_DEVICE_ID_GAMERON_DUAL_PSX_ADAPTOR) },
 	{ HID_USB_DEVICE(USB_VENDOR_ID_GAMERON, USB_DEVICE_ID_GAMERON_DUAL_PCS_ADAPTOR) },