Commit 538f6740 authored by Daniel Playfair Cal's avatar Daniel Playfair Cal Committed by Jiri Kosina
Browse files

HID: i2c-hid: reset Synaptics SYNA2393 on resume 

On the Dell XPS 9570, the Synaptics SYNA2393 touchpad generates spurious
interrupts after resuming from suspend until it receives some input or
is reset. Add it to the quirk I2C_HID_QUIRK_RESET_ON_RESUME so that it
is reset when resuming from suspend.

More information about the bug can be found in this mailing list
discussion: https://www.spinics.net/lists/linux-input/msg59530.html



Signed-off-by: default avatarDaniel Playfair Cal <daniel.playfair.cal@gmail.com>
Signed-off-by: default avatarJiri Kosina <jkosina@suse.cz>
parent dcce8ef8

drivers/hid/hid-ids.h

+3 −0
Original line number Diff line number Diff line
@@ -1099,6 +1099,9 @@ 
#define USB_DEVICE_ID_SYMBOL_SCANNER_2	0x1300

#define USB_DEVICE_ID_SYMBOL_SCANNER_3	0x1200



#define I2C_VENDOR_ID_SYNAPTICS     0x06cb

#define I2C_PRODUCT_ID_SYNAPTICS_SYNA2393   0x7a13



#define USB_VENDOR_ID_SYNAPTICS		0x06cb

#define USB_DEVICE_ID_SYNAPTICS_TP	0x0001

#define USB_DEVICE_ID_SYNAPTICS_INT_TP	0x0002

drivers/hid/i2c-hid/i2c-hid-core.c

+2 −0
Original line number Diff line number Diff line
@@ -177,6 +177,8 @@ static const struct i2c_hid_quirks { 
		 I2C_HID_QUIRK_BOGUS_IRQ },

	{ USB_VENDOR_ID_ALPS_JP, HID_ANY_ID,

		 I2C_HID_QUIRK_RESET_ON_RESUME },

	{ I2C_VENDOR_ID_SYNAPTICS, I2C_PRODUCT_ID_SYNAPTICS_SYNA2393,

		 I2C_HID_QUIRK_RESET_ON_RESUME },

	{ USB_VENDOR_ID_ITE, I2C_DEVICE_ID_ITE_LENOVO_LEGION_Y720,

		I2C_HID_QUIRK_BAD_INPUT_SIZE },

	{ 0, 0 }

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