Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hid

Pull HID updates from Jiri Kosina:
 "to receive patches queued for 4.3 merge window in HID tree. Highlights:

   - a lot of improvements (regarding supported features and devices) to
     Wacom driver, from Aaron Skomra and Jason Gerecke
   - a lot of functional fixes and support for large I2C transfer to
     cp2112 driver, from Ellen Wang
   - HW support improvements to RMI driver, from Andrew Duggan
   - quite some small fixes and device ID additions all over the place"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hid: (44 commits)
  HID: wacom: wacom_setup_numbered_buttons is local to wacom_wac
  HID: wacom: Add support for Express Key Remote.
  HID: wacom: Set button bits based on a new numbered_buttons
  HID: quirks: add QUIRK_NOGET for an other TPV touchscreen
  HID: usbhid: Fix the check for HID_RESET_PENDING in hid_io_error
  HID: i2c-hid: Only disable irq wake if it was successfully enabled during suspend
  HID: wacom: Use tablet-provided touch height/width values for INTUOSHT
  HID: gembird: add new driver to fix Gembird JPD-DualForce 2
  HID: lenovo: Hide middle-button press until release
  HID: lenovo: Add missing return-value check
  HID: lenovo: Use constants for axes names
  HID: wacom: Simplify 'wacom_pl_irq'
  HID: wacom: Do not repeatedly attempt to set device mode on error
  HID: wacom: Do not repeatedly attempt to set device mode on error
  HID: wacom: Remove WACOM_QUIRK_NO_INPUT
  HID: wacom: Replace WACOM_QUIRK_MONITOR with WACOM_DEVICETYPE_WL_MONITOR
  HID: wacom: Use calculated pkglen for wireless touch interface
  HID: sony: Fix DS4 controller reporting rate issues
  HID: chicony: Add support for Acer Aspire Switch 12
  HID: hid-lg: Add USBID for Logitech G29 Wheel
  ...

Author: torvalds

Documentation/ABI/testing/sysfs-driver-wacom

@@ -77,3 +77,22 @@ Description:
 		The format is also scrambled, like in the USB mode, and it can
 		be summarized by converting 76543210 into GECA6420.
 					    HGFEDCBA      HFDB7531
+
+What:		/sys/bus/hid/devices/<bus>:<vid>:<pid>.<n>/wacom_remote/unpair_remote
+Date:		July 2015
+Contact:	[email protected]
+Description:
+		Writing the character sequence '*' followed by a newline to
+		this file will delete all of the current pairings on the
+		device. Other character sequences are reserved. This file is
+		write only.
+
+What:		/sys/bus/hid/devices/<bus>:<vid>:<pid>.<n>/wacom_remote/<serial_number>/remote_mode
+Date:		July 2015
+Contact:	[email protected]
+Description:
+		Reading from this file reports the mode status of the
+		remote as indicated by the LED lights on the device. If no
+		reports have been received from the paired device, reading
+		from this file will report '-1'. The mode is read-only
+		and cannot be set through the driver.

drivers/hid/Kconfig

@@ -251,6 +251,12 @@ config HID_EZKEY
 	---help---
 	Support for Ezkey BTC 8193 keyboard.
 
+config HID_GEMBIRD
+	tristate "Gembird Joypad"
+	depends on HID
+	---help---
+	Support for Gembird JPD-DualForce 2.
+
 config HID_HOLTEK
 	tristate "Holtek HID devices"
 	depends on USB_HID
@@ -480,6 +486,7 @@ config HID_MULTITOUCH
 	  - Atmel panels
 	  - Cando dual touch panels
 	  - Chunghwa panels
+	  - CJTouch panels
 	  - CVTouch panels
 	  - Cypress TrueTouch panels
 	  - Elan Microelectronics touch panels

drivers/hid/Makefile

@@ -36,6 +36,7 @@ obj-$(CONFIG_HID_EMS_FF)	+= hid-emsff.o
 obj-$(CONFIG_HID_ELECOM)	+= hid-elecom.o
 obj-$(CONFIG_HID_ELO)		+= hid-elo.o
 obj-$(CONFIG_HID_EZKEY)		+= hid-ezkey.o
+obj-$(CONFIG_HID_GEMBIRD)	+= hid-gembird.o
 obj-$(CONFIG_HID_GT683R)	+= hid-gt683r.o
 obj-$(CONFIG_HID_GYRATION)	+= hid-gyration.o
 obj-$(CONFIG_HID_HOLTEK)	+= hid-holtek-kbd.o

drivers/hid/hid-chicony.c

@@ -20,6 +20,7 @@
 #include <linux/input.h>
 #include <linux/hid.h>
 #include <linux/module.h>
+#include <linux/usb.h>
 
 #include "hid-ids.h"
 
@@ -57,17 +58,42 @@ static int ch_input_mapping(struct hid_device *hdev, struct hid_input *hi,
 	return 1;
 }
 
+static __u8 *ch_switch12_report_fixup(struct hid_device *hdev, __u8 *rdesc,
+		unsigned int *rsize)
+{
+	struct usb_interface *intf = to_usb_interface(hdev->dev.parent);
+	
+	if (intf->cur_altsetting->desc.bInterfaceNumber == 1) {
+		/* Change usage maximum and logical maximum from 0x7fff to
+		 * 0x2fff, so they don't exceed HID_MAX_USAGES */
+		switch (hdev->product) {
+		case USB_DEVICE_ID_CHICONY_ACER_SWITCH12:
+			if (*rsize >= 128 && rdesc[64] == 0xff && rdesc[65] == 0x7f
+					&& rdesc[69] == 0xff && rdesc[70] == 0x7f) {
+				hid_info(hdev, "Fixing up report descriptor\n");
+				rdesc[65] = rdesc[70] = 0x2f;
+			}
+			break;
+		}
+
+	}
+	return rdesc;
+}
+
+
 static const struct hid_device_id ch_devices[] = {
 	{ HID_USB_DEVICE(USB_VENDOR_ID_CHICONY, USB_DEVICE_ID_CHICONY_TACTICAL_PAD) },
 	{ HID_USB_DEVICE(USB_VENDOR_ID_CHICONY, USB_DEVICE_ID_CHICONY_WIRELESS2) },
 	{ HID_USB_DEVICE(USB_VENDOR_ID_CHICONY, USB_DEVICE_ID_CHICONY_AK1D) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_CHICONY, USB_DEVICE_ID_CHICONY_ACER_SWITCH12) },
 	{ }
 };
 MODULE_DEVICE_TABLE(hid, ch_devices);
 
 static struct hid_driver ch_driver = {
 	.name = "chicony",
 	.id_table = ch_devices,
+	.report_fixup = ch_switch12_report_fixup,
 	.input_mapping = ch_input_mapping,
 };
 module_hid_driver(ch_driver);

drivers/hid/hid-core.c

@@ -427,6 +427,7 @@ static int hid_parser_local(struct hid_parser *parser, struct hid_item *item)
 {
 	__u32 data;
 	unsigned n;
+	__u32 count;
 
 	data = item_udata(item);
 
@@ -490,6 +491,24 @@ static int hid_parser_local(struct hid_parser *parser, struct hid_item *item)
 		if (item->size <= 2)
 			data = (parser->global.usage_page << 16) + data;
 
+		count = data - parser->local.usage_minimum;
+		if (count + parser->local.usage_index >= HID_MAX_USAGES) {
+			/*
+			 * We do not warn if the name is not set, we are
+			 * actually pre-scanning the device.
+			 */
+			if (dev_name(&parser->device->dev))
+				hid_warn(parser->device,
+					 "ignoring exceeding usage max\n");
+			data = HID_MAX_USAGES - parser->local.usage_index +
+				parser->local.usage_minimum - 1;
+			if (data <= 0) {
+				hid_err(parser->device,
+					"no more usage index available\n");
+				return -1;
+			}
+		}
+
 		for (n = parser->local.usage_minimum; n <= data; n++)
 			if (hid_add_usage(parser, n)) {
 				dbg_hid("hid_add_usage failed\n");
@@ -705,8 +724,9 @@ static void hid_scan_collection(struct hid_parser *parser, unsigned type)
 		hid->group = HID_GROUP_SENSOR_HUB;
 
 	if (hid->vendor == USB_VENDOR_ID_MICROSOFT &&
-	    (hid->product == USB_DEVICE_ID_MS_TYPE_COVER_3 ||
-	     hid->product == USB_DEVICE_ID_MS_TYPE_COVER_3_JP ||
+	    (hid->product == USB_DEVICE_ID_MS_TYPE_COVER_PRO_3 ||
+	     hid->product == USB_DEVICE_ID_MS_TYPE_COVER_PRO_3_JP ||
+	     hid->product == USB_DEVICE_ID_MS_TYPE_COVER_3 ||
 	     hid->product == USB_DEVICE_ID_MS_POWER_COVER) &&
 	    hid->group == HID_GROUP_MULTITOUCH)
 		hid->group = HID_GROUP_GENERIC;
@@ -1807,6 +1827,7 @@ static const struct hid_device_id hid_have_special_driver[] = {
 	{ HID_USB_DEVICE(USB_VENDOR_ID_CHICONY, USB_DEVICE_ID_CHICONY_WIRELESS) },
 	{ HID_USB_DEVICE(USB_VENDOR_ID_CHICONY, USB_DEVICE_ID_CHICONY_WIRELESS2) },
 	{ HID_USB_DEVICE(USB_VENDOR_ID_CHICONY, USB_DEVICE_ID_CHICONY_AK1D) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_CHICONY, USB_DEVICE_ID_CHICONY_ACER_SWITCH12) },
 	{ HID_USB_DEVICE(USB_VENDOR_ID_CREATIVELABS, USB_DEVICE_ID_PRODIKEYS_PCMIDI) },
 	{ HID_USB_DEVICE(USB_VENDOR_ID_CYGNAL, USB_DEVICE_ID_CYGNAL_CP2112) },
 	{ HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_BARCODE_1) },
@@ -1823,6 +1844,7 @@ static const struct hid_device_id hid_have_special_driver[] = {
 	{ HID_USB_DEVICE(USB_VENDOR_ID_EZKEY, USB_DEVICE_ID_BTC_8193) },
 	{ 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) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_GEMBIRD, USB_DEVICE_ID_GEMBIRD_JPD_DUALFORCE2) },
 	{ HID_USB_DEVICE(USB_VENDOR_ID_GREENASIA, 0x0003) },
 	{ HID_USB_DEVICE(USB_VENDOR_ID_GREENASIA, 0x0012) },
 	{ HID_USB_DEVICE(USB_VENDOR_ID_GYRATION, USB_DEVICE_ID_GYRATION_REMOTE) },
@@ -1905,8 +1927,9 @@ static const struct hid_device_id hid_have_special_driver[] = {
 	{ HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_DIGITAL_MEDIA_3K) },
 	{ HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_WIRELESS_OPTICAL_DESKTOP_3_0) },
 	{ HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_OFFICE_KB) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_TYPE_COVER_PRO_3) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_TYPE_COVER_PRO_3_JP) },
 	{ HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_TYPE_COVER_3) },
-	{ HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_TYPE_COVER_3_JP) },
 	{ HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_POWER_COVER) },
 	{ HID_USB_DEVICE(USB_VENDOR_ID_MONTEREY, USB_DEVICE_ID_GENIUS_KB29E) },
 	{ HID_USB_DEVICE(USB_VENDOR_ID_MSI, USB_DEVICE_ID_MSI_GT683R_LED_PANEL) },

drivers/hid/hid-cp2112.c

@@ -156,6 +156,7 @@ struct cp2112_device {
 	wait_queue_head_t wait;
 	u8 read_data[61];
 	u8 read_length;
+	u8 hwversion;
 	int xfer_status;
 	atomic_t read_avail;
 	atomic_t xfer_avail;
@@ -446,33 +447,71 @@ static int cp2112_i2c_write_req(void *buf, u8 slave_address, u8 *data,
 	return data_length + 3;
 }
 
+static int cp2112_i2c_write_read_req(void *buf, u8 slave_address,
+				     u8 *addr, int addr_length,
+				     int read_length)
+{
+	struct cp2112_write_read_req_report *report = buf;
+
+	if (read_length < 1 || read_length > 512 ||
+	    addr_length > sizeof(report->target_address))
+		return -EINVAL;
+
+	report->report = CP2112_DATA_WRITE_READ_REQUEST;
+	report->slave_address = slave_address << 1;
+	report->length = cpu_to_be16(read_length);
+	report->target_address_length = addr_length;
+	memcpy(report->target_address, addr, addr_length);
+	return addr_length + 5;
+}
+
 static int cp2112_i2c_xfer(struct i2c_adapter *adap, struct i2c_msg *msgs,
 			   int num)
 {
 	struct cp2112_device *dev = (struct cp2112_device *)adap->algo_data;
 	struct hid_device *hdev = dev->hdev;
 	u8 buf[64];
 	ssize_t count;
+	ssize_t read_length = 0;
+	u8 *read_buf = NULL;
 	unsigned int retries;
 	int ret;
 
 	hid_dbg(hdev, "I2C %d messages\n", num);
 
-	if (num != 1) {
+	if (num == 1) {
+		if (msgs->flags & I2C_M_RD) {
+			hid_dbg(hdev, "I2C read %#04x len %d\n",
+				msgs->addr, msgs->len);
+			read_length = msgs->len;
+			read_buf = msgs->buf;
+			count = cp2112_read_req(buf, msgs->addr, msgs->len);
+		} else {
+			hid_dbg(hdev, "I2C write %#04x len %d\n",
+				msgs->addr, msgs->len);
+			count = cp2112_i2c_write_req(buf, msgs->addr,
+						     msgs->buf, msgs->len);
+		}
+		if (count < 0)
+			return count;
+	} else if (dev->hwversion > 1 &&  /* no repeated start in rev 1 */
+		   num == 2 &&
+		   msgs[0].addr == msgs[1].addr &&
+		   !(msgs[0].flags & I2C_M_RD) && (msgs[1].flags & I2C_M_RD)) {
+		hid_dbg(hdev, "I2C write-read %#04x wlen %d rlen %d\n",
+			msgs[0].addr, msgs[0].len, msgs[1].len);
+		read_length = msgs[1].len;
+		read_buf = msgs[1].buf;
+		count = cp2112_i2c_write_read_req(buf, msgs[0].addr,
+				msgs[0].buf, msgs[0].len, msgs[1].len);
+		if (count < 0)
+			return count;
+	} else {
 		hid_err(hdev,
 			"Multi-message I2C transactions not supported\n");
 		return -EOPNOTSUPP;
 	}
 
-	if (msgs->flags & I2C_M_RD)
-		count = cp2112_read_req(buf, msgs->addr, msgs->len);
-	else
-		count = cp2112_i2c_write_req(buf, msgs->addr, msgs->buf,
-					     msgs->len);
-
-	if (count < 0)
-		return count;
-
 	ret = hid_hw_power(hdev, PM_HINT_FULLON);
 	if (ret < 0) {
 		hid_err(hdev, "power management error: %d\n", ret);
@@ -508,21 +547,34 @@ static int cp2112_i2c_xfer(struct i2c_adapter *adap, struct i2c_msg *msgs,
 		goto power_normal;
 	}
 
-	if (!(msgs->flags & I2C_M_RD))
-		goto finish;
-
-	ret = cp2112_read(dev, msgs->buf, msgs->len);
-	if (ret < 0)
-		goto power_normal;
-	if (ret != msgs->len) {
-		hid_warn(hdev, "short read: %d < %d\n", ret, msgs->len);
-		ret = -EIO;
-		goto power_normal;
+	for (count = 0; count < read_length;) {
+		ret = cp2112_read(dev, read_buf + count, read_length - count);
+		if (ret < 0)
+			goto power_normal;
+		if (ret == 0) {
+			hid_err(hdev, "read returned 0\n");
+			ret = -EIO;
+			goto power_normal;
+		}
+		count += ret;
+		if (count > read_length) {
+			/*
+			 * The hardware returned too much data.
+			 * This is mostly harmless because cp2112_read()
+			 * has a limit check so didn't overrun our
+			 * buffer.  Nevertheless, we return an error
+			 * because something is seriously wrong and
+			 * it shouldn't go unnoticed.
+			 */
+			hid_err(hdev, "long read: %d > %zd\n",
+				ret, read_length - count + ret);
+			ret = -EIO;
+			goto power_normal;
+		}
 	}
 
-finish:
 	/* return the number of transferred messages */
-	ret = 1;
+	ret = num;
 
 power_normal:
 	hid_hw_power(hdev, PM_HINT_NORMAL);
@@ -537,7 +589,7 @@ static int cp2112_xfer(struct i2c_adapter *adap, u16 addr,
 	struct cp2112_device *dev = (struct cp2112_device *)adap->algo_data;
 	struct hid_device *hdev = dev->hdev;
 	u8 buf[64];
-	__be16 word;
+	__le16 word;
 	ssize_t count;
 	size_t read_length = 0;
 	unsigned int retries;
@@ -554,7 +606,7 @@ static int cp2112_xfer(struct i2c_adapter *adap, u16 addr,
 		if (I2C_SMBUS_READ == read_write)
 			count = cp2112_read_req(buf, addr, read_length);
 		else
-			count = cp2112_write_req(buf, addr, data->byte, NULL,
+			count = cp2112_write_req(buf, addr, command, NULL,
 						 0);
 		break;
 	case I2C_SMBUS_BYTE_DATA:
@@ -569,7 +621,7 @@ static int cp2112_xfer(struct i2c_adapter *adap, u16 addr,
 		break;
 	case I2C_SMBUS_WORD_DATA:
 		read_length = 2;
-		word = cpu_to_be16(data->word);
+		word = cpu_to_le16(data->word);
 
 		if (I2C_SMBUS_READ == read_write)
 			count = cp2112_write_read_req(buf, addr, read_length,
@@ -582,7 +634,7 @@ static int cp2112_xfer(struct i2c_adapter *adap, u16 addr,
 		size = I2C_SMBUS_WORD_DATA;
 		read_write = I2C_SMBUS_READ;
 		read_length = 2;
-		word = cpu_to_be16(data->word);
+		word = cpu_to_le16(data->word);
 
 		count = cp2112_write_read_req(buf, addr, read_length, command,
 					      (u8 *)&word, 2);
@@ -675,7 +727,7 @@ static int cp2112_xfer(struct i2c_adapter *adap, u16 addr,
 		data->byte = buf[0];
 		break;
 	case I2C_SMBUS_WORD_DATA:
-		data->word = be16_to_cpup((__be16 *)buf);
+		data->word = le16_to_cpup((__le16 *)buf);
 		break;
 	case I2C_SMBUS_BLOCK_DATA:
 		if (read_length > I2C_SMBUS_BLOCK_MAX) {
@@ -1030,6 +1082,7 @@ static int cp2112_probe(struct hid_device *hdev, const struct hid_device_id *id)
 	dev->adap.dev.parent	= &hdev->dev;
 	snprintf(dev->adap.name, sizeof(dev->adap.name),
 		 "CP2112 SMBus Bridge on hiddev%d", hdev->minor);
+	dev->hwversion = buf[2];
 	init_waitqueue_head(&dev->wait);
 
 	hid_device_io_start(hdev);