Adding upstream version 4.19.249.upstream/4.19.249

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 204 insertions, 0 deletions

diff --git a/drivers/hid/hid-samsung.c b/drivers/hid/hid-samsung.c
new file mode 100644
index 000000000..89bb22603
--- /dev/null
+++ b/drivers/hid/hid-samsung.c
@@ -0,0 +1,204 @@
+/*
+ *  HID driver for some samsung "special" devices
+ *
+ *  Copyright (c) 1999 Andreas Gal
+ *  Copyright (c) 2000-2005 Vojtech Pavlik <vojtech@suse.cz>
+ *  Copyright (c) 2005 Michael Haboustak <mike-@cinci.rr.com> for Concept2, Inc
+ *  Copyright (c) 2006-2007 Jiri Kosina
+ *  Copyright (c) 2008 Jiri Slaby
+ *  Copyright (c) 2010 Don Prince <dhprince.devel@yahoo.co.uk>
+ *
+ *
+ *  This driver supports several HID devices:
+ *
+ *  [0419:0001] Samsung IrDA remote controller (reports as Cypress USB Mouse).
+ *	various hid report fixups for different variants.
+ *
+ *  [0419:0600] Creative Desktop Wireless 6000 keyboard/mouse combo
+ *	several key mappings used from the consumer usage page
+ *	deviate from the USB HUT 1.12 standard.
+ *
+ */
+
+/*
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the Free
+ * Software Foundation; either version 2 of the License, or (at your option)
+ * any later version.
+ */
+
+#include <linux/device.h>
+#include <linux/usb.h>
+#include <linux/hid.h>
+#include <linux/module.h>
+
+#include "hid-ids.h"
+
+/*
+ * There are several variants for 0419:0001:
+ *
+ * 1. 184 byte report descriptor
+ * Vendor specific report #4 has a size of 48 bit,
+ * and therefore is not accepted when inspecting the descriptors.
+ * As a workaround we reinterpret the report as:
+ *   Variable type, count 6, size 8 bit, log. maximum 255
+ * The burden to reconstruct the data is moved into user space.
+ *
+ * 2. 203 byte report descriptor
+ * Report #4 has an array field with logical range 0..18 instead of 1..15.
+ *
+ * 3. 135 byte report descriptor
+ * Report #4 has an array field with logical range 0..17 instead of 1..14.
+ *
+ * 4. 171 byte report descriptor
+ * Report #3 has an array field with logical range 0..1 instead of 1..3.
+ */
+static inline void samsung_irda_dev_trace(struct hid_device *hdev,
+		unsigned int rsize)
+{
+	hid_info(hdev, "fixing up Samsung IrDA %d byte report descriptor\n",
+		 rsize);
+}
+
+static __u8 *samsung_irda_report_fixup(struct hid_device *hdev, __u8 *rdesc,
+		unsigned int *rsize)
+{
+	if (*rsize == 184 && rdesc[175] == 0x25 && rdesc[176] == 0x40 &&
+			rdesc[177] == 0x75 && rdesc[178] == 0x30 &&
+			rdesc[179] == 0x95 && rdesc[180] == 0x01 &&
+			rdesc[182] == 0x40) {
+		samsung_irda_dev_trace(hdev, 184);
+		rdesc[176] = 0xff;
+		rdesc[178] = 0x08;
+		rdesc[180] = 0x06;
+		rdesc[182] = 0x42;
+	} else
+	if (*rsize == 203 && rdesc[192] == 0x15 && rdesc[193] == 0x0 &&
+			rdesc[194] == 0x25 && rdesc[195] == 0x12) {
+		samsung_irda_dev_trace(hdev, 203);
+		rdesc[193] = 0x1;
+		rdesc[195] = 0xf;
+	} else
+	if (*rsize == 135 && rdesc[124] == 0x15 && rdesc[125] == 0x0 &&
+			rdesc[126] == 0x25 && rdesc[127] == 0x11) {
+		samsung_irda_dev_trace(hdev, 135);
+		rdesc[125] = 0x1;
+		rdesc[127] = 0xe;
+	} else
+	if (*rsize == 171 && rdesc[160] == 0x15 && rdesc[161] == 0x0 &&
+			rdesc[162] == 0x25 && rdesc[163] == 0x01) {
+		samsung_irda_dev_trace(hdev, 171);
+		rdesc[161] = 0x1;
+		rdesc[163] = 0x3;
+	}
+	return rdesc;
+}
+
+#define samsung_kbd_mouse_map_key_clear(c) \
+	hid_map_usage_clear(hi, usage, bit, max, EV_KEY, (c))
+
+static int samsung_kbd_mouse_input_mapping(struct hid_device *hdev,
+	struct hid_input *hi, struct hid_field *field, struct hid_usage *usage,
+	unsigned long **bit, int *max)
+{
+	struct usb_interface *intf = to_usb_interface(hdev->dev.parent);
+	unsigned short ifnum = intf->cur_altsetting->desc.bInterfaceNumber;
+
+	if (1 != ifnum || HID_UP_CONSUMER != (usage->hid & HID_USAGE_PAGE))
+		return 0;
+
+	dbg_hid("samsung wireless keyboard/mouse input mapping event [0x%x]\n",
+		usage->hid & HID_USAGE);
+
+	switch (usage->hid & HID_USAGE) {
+	/* report 2 */
+	case 0x183: samsung_kbd_mouse_map_key_clear(KEY_MEDIA); break;
+	case 0x195: samsung_kbd_mouse_map_key_clear(KEY_EMAIL);	break;
+	case 0x196: samsung_kbd_mouse_map_key_clear(KEY_CALC); break;
+	case 0x197: samsung_kbd_mouse_map_key_clear(KEY_COMPUTER); break;
+	case 0x22b: samsung_kbd_mouse_map_key_clear(KEY_SEARCH); break;
+	case 0x22c: samsung_kbd_mouse_map_key_clear(KEY_WWW); break;
+	case 0x22d: samsung_kbd_mouse_map_key_clear(KEY_BACK); break;
+	case 0x22e: samsung_kbd_mouse_map_key_clear(KEY_FORWARD); break;
+	case 0x22f: samsung_kbd_mouse_map_key_clear(KEY_FAVORITES); break;
+	case 0x230: samsung_kbd_mouse_map_key_clear(KEY_REFRESH); break;
+	case 0x231: samsung_kbd_mouse_map_key_clear(KEY_STOP); break;
+	default:
+		return 0;
+	}
+
+	return 1;
+}
+
+static __u8 *samsung_report_fixup(struct hid_device *hdev, __u8 *rdesc,
+	unsigned int *rsize)
+{
+	if (USB_DEVICE_ID_SAMSUNG_IR_REMOTE == hdev->product)
+		rdesc = samsung_irda_report_fixup(hdev, rdesc, rsize);
+	return rdesc;
+}
+
+static int samsung_input_mapping(struct hid_device *hdev, struct hid_input *hi,
+	struct hid_field *field, struct hid_usage *usage,
+	unsigned long **bit, int *max)
+{
+	int ret = 0;
+
+	if (USB_DEVICE_ID_SAMSUNG_WIRELESS_KBD_MOUSE == hdev->product)
+		ret = samsung_kbd_mouse_input_mapping(hdev,
+			hi, field, usage, bit, max);
+
+	return ret;
+}
+
+static int samsung_probe(struct hid_device *hdev,
+		const struct hid_device_id *id)
+{
+	int ret;
+	unsigned int cmask = HID_CONNECT_DEFAULT;
+
+	if (!hid_is_usb(hdev))
+		return -EINVAL;
+
+	ret = hid_parse(hdev);
+	if (ret) {
+		hid_err(hdev, "parse failed\n");
+		goto err_free;
+	}
+
+	if (USB_DEVICE_ID_SAMSUNG_IR_REMOTE == hdev->product) {
+		if (hdev->rsize == 184) {
+			/* disable hidinput, force hiddev */
+			cmask = (cmask & ~HID_CONNECT_HIDINPUT) |
+				HID_CONNECT_HIDDEV_FORCE;
+		}
+	}
+
+	ret = hid_hw_start(hdev, cmask);
+	if (ret) {
+		hid_err(hdev, "hw start failed\n");
+		goto err_free;
+	}
+
+	return 0;
+err_free:
+	return ret;
+}
+
+static const struct hid_device_id samsung_devices[] = {
+	{ HID_USB_DEVICE(USB_VENDOR_ID_SAMSUNG, USB_DEVICE_ID_SAMSUNG_IR_REMOTE) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_SAMSUNG, USB_DEVICE_ID_SAMSUNG_WIRELESS_KBD_MOUSE) },
+	{ }
+};
+MODULE_DEVICE_TABLE(hid, samsung_devices);
+
+static struct hid_driver samsung_driver = {
+	.name = "samsung",
+	.id_table = samsung_devices,
+	.report_fixup = samsung_report_fixup,
+	.input_mapping = samsung_input_mapping,
+	.probe = samsung_probe,
+};
+module_hid_driver(samsung_driver);
+
+MODULE_LICENSE("GPL");