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linux-stable/drivers/hid
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Rishi Gupta 328de1c519 HID: mcp2221: add GPIO functionality support 
MCP2221 has 4 pins that can be used as GPIO or configured
for alternate functionality such as clock generation and
IRQ detection. This patch adds support for GPIO functionality.

To set direction of a pin or to toggle its state after it
has been configured as GPIO, driver sends command to mcp2221
and parses response received from mcp2221. Based on this
response either 0 or appropriate error code is returned to
GPIO framework.

To get the direction or current state of a pin, driver
sends command and read response from the device. Based on
the response received from device direction or value
is sent to the GPIO framework.

Command from driver to mcp2221 device are output report.
Response received from mcp2221 is input report.

Datasheet (page 45-48) contains details about how to decode
the response received from device:
http://ww1.microchip.com/downloads/en/DeviceDoc/20005565B.pdf

Signed-off-by: Rishi Gupta <gupt21@gmail.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2020-04-16 22:15:31 +02:00
..
i2c-hid HID: i2c-hid: add Trekstor Surfbook E11B to descriptor override 2020-02-14 09:49:11 +01:00
intel-ish-hid HID: intel-ish-hid: hbm.h: Replace zero-length array with flexible-array member 2020-03-21 00:07:32 +01:00
usbhid HID: hiddev: Fix race in in hiddev_disconnect() 2020-02-12 14:46:56 +01:00
hid-a4tech.c HID: input: fix a4tech horizontal wheel custom usage 2019-08-05 14:37:15 +02:00
hid-accutouch.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
hid-alps.c HID: alps: Fix an error handling path in 'alps_input_configured()' 2020-02-12 15:06:19 +01:00
hid-apple.c HID: apple: Add support for recent firmware on Magic Keyboards 2020-02-12 14:17:42 +01:00
hid-appleir.c HID: appleir: Use devm_kzalloc() instead of kzalloc() 2020-03-13 17:33:11 +01:00
hid-asus.c HID: asus: Ignore Asus vendor-page usage-code 0xff events 2019-12-13 10:26:18 +01:00
hid-aureal.c treewide: Add SPDX license identifier for more missed files 2019-05-21 10:50:45 +02:00
hid-axff.c HID: Fix assumption that devices have inputs 2019-10-03 15:36:40 -04:00
hid-belkin.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
hid-betopff.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
hid-bigbenff.c HID: hid-bigbenff: fix race condition for scheduled work during removal 2020-02-18 14:43:51 +01:00
hid-cherry.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
hid-chicony.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
hid-cmedia.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 282 2019-06-05 17:36:37 +02:00
hid-core.c HID: core: fix off-by-one memset in hid_report_raw_event() 2020-02-12 14:18:33 +01:00
hid-corsair.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
hid-cougar.c HID: do not call hid_set_drvdata(hdev, NULL) in drivers 2019-08-22 17:11:58 +02:00
hid-cp2112.c HID: cp2112: prevent sleeping function called from invalid context 2019-08-19 14:13:00 +02:00
hid-creative-sb0540.c HID: sb0540: add support for Creative SB0540 IR receivers 2019-09-03 16:52:04 +02:00
hid-cypress.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
hid-debug.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 2019-05-30 11:26:35 -07:00
hid-dr.c HID: Fix assumption that devices have inputs 2019-10-03 15:36:40 -04:00
hid-elan.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
hid-elecom.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
hid-elo.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 307 2019-06-05 17:37:04 +02:00
hid-emsff.c HID: Fix assumption that devices have inputs 2019-10-03 15:36:40 -04:00
hid-ezkey.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
hid-gaff.c HID: Fix assumption that devices have inputs 2019-10-03 15:36:40 -04:00
hid-gembird.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
hid-generic.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
hid-gfrm.c HID: do not call hid_set_drvdata(hdev, NULL) in drivers 2019-08-22 17:11:58 +02:00
hid-glorious.c HID: Add driver fixing Glorious PC Gaming Race mouse report descriptor 2020-03-18 13:36:21 +01:00
hid-google-hammer.c HID: google: add moonball USB id 2020-03-16 14:51:05 +01:00
hid-gt683r.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 157 2019-05-30 11:26:37 -07:00
hid-gyration.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
hid-holtek-kbd.c HID: holtek: test for sanity of intfdata 2019-08-05 14:18:42 +02:00
hid-holtek-mouse.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
hid-holtekff.c HID: Fix assumption that devices have inputs 2019-10-03 15:36:40 -04:00
hid-hyperv.c HID: hyperv: NULL check before some freeing functions is not needed. 2020-03-05 14:17:11 +00:00
hid-icade.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
hid-ids.h Merge branch 'for-5.7/mcp2221' into for-linus 2020-04-01 13:36:46 +02:00
hid-input.c HID: hid-input: clear unmapped usages 2019-12-13 13:43:15 +01:00
hid-ite.c HID: ite: Only bind to keyboard USB interface on Acer SW5-012 keyboard dock 2020-02-03 15:32:44 +01:00
hid-jabra.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
hid-kensington.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
hid-keytouch.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
hid-kye.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
hid-lcpower.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
hid-led.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 372 2019-06-05 17:37:10 +02:00
hid-lenovo.c HID: do not call hid_set_drvdata(hdev, NULL) in drivers 2019-08-22 17:11:58 +02:00
hid-lg-g15.c HID: lg-g15: Do not fail the probe when we fail to disable F# emulation 2020-03-17 21:48:48 +01:00
hid-lg.c HID: logitech: Fix general protection fault caused by Logitech driver 2019-08-22 09:53:08 +02:00
hid-lg.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
hid-lg2ff.c HID: Fix assumption that devices have inputs 2019-10-03 15:36:40 -04:00
hid-lg3ff.c HID: Fix assumption that devices have inputs 2019-10-03 15:36:40 -04:00
hid-lg4ff.c HID: Fix assumption that devices have inputs 2019-10-03 15:36:40 -04:00
hid-lg4ff.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
hid-lgff.c HID: Fix assumption that devices have inputs 2019-10-03 15:36:40 -04:00
hid-logitech-dj.c HID: logitech-dj: add support for the static device in the Powerplay mat/receiver 2020-03-10 14:20:40 +01:00
hid-logitech-hidpp.c HID: logitech-hidpp: BatteryVoltage: only read chargeStatus if extPower is active 2020-01-28 15:51:19 +01:00
hid-macally.c HID: macally: Add support for Macally ikey keyboard 2019-04-03 17:14:13 +02:00
hid-magicmouse.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
hid-maltron.c Support for Maltron L90 keyboard media keys 2019-01-14 20:11:01 +01:00
hid-mcp2221.c HID: mcp2221: add GPIO functionality support 2020-04-16 22:15:31 +02:00
hid-mf.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 157 2019-05-30 11:26:37 -07:00
hid-microsoft.c HID: Fix assumption that devices have inputs 2019-10-03 15:36:40 -04:00
hid-monterey.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
hid-multitouch.c drivers/hid/hid-multitouch.c: fix a possible null pointer access. 2019-12-19 10:22:25 +01:00
hid-nti.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
hid-ntrig.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
hid-ortek.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
hid-penmount.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
hid-petalynx.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
hid-picolcd.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 265 2019-06-05 17:30:28 +02:00
hid-picolcd_backlight.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 265 2019-06-05 17:30:28 +02:00
hid-picolcd_cir.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 265 2019-06-05 17:30:28 +02:00
hid-picolcd_core.c HID: do not call hid_set_drvdata(hdev, NULL) in drivers 2019-08-22 17:11:58 +02:00
hid-picolcd_debugfs.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 265 2019-06-05 17:30:28 +02:00
hid-picolcd_fb.c Merge branch 'for-5.7/appleir' into for-linus 2020-04-01 12:26:12 +02:00
hid-picolcd_lcd.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 265 2019-06-05 17:30:28 +02:00
hid-picolcd_leds.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 265 2019-06-05 17:30:28 +02:00
hid-pl.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 2019-05-30 11:26:35 -07:00
hid-plantronics.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
hid-primax.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 282 2019-06-05 17:36:37 +02:00
hid-prodikeys.c HID: prodikeys: make array keys static const, makes object smaller 2019-10-01 16:21:04 +02:00
hid-quirks.c Merge branch 'for-5.7/core' into for-linus 2020-04-01 12:27:16 +02:00
hid-redragon.c HID: redragon: fix num lock and caps lock LEDs 2018-06-25 15:23:40 +02:00
hid-retrode.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
hid-rmi.c HID: rmi: Simplify an error handling path in 'rmi_hid_read_block()' 2020-03-23 00:08:51 +01:00
hid-roccat-arvo.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
hid-roccat-arvo.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
hid-roccat-common.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
hid-roccat-common.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
hid-roccat-isku.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
hid-roccat-isku.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
hid-roccat-kone.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
hid-roccat-kone.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
hid-roccat-koneplus.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
hid-roccat-koneplus.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
hid-roccat-konepure.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
hid-roccat-kovaplus.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
hid-roccat-kovaplus.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
hid-roccat-lua.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
hid-roccat-lua.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
hid-roccat-pyra.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
hid-roccat-pyra.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
hid-roccat-ryos.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
hid-roccat-savu.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
hid-roccat-savu.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
hid-roccat.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
hid-saitek.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
hid-samsung.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
hid-sensor-custom.c HID: hid-sensor-custom: Use scnprintf() for avoiding potential buffer overflow 2020-03-11 11:58:58 +01:00
hid-sensor-hub.c HID: do not call hid_set_drvdata(hdev, NULL) in drivers 2019-08-22 17:11:58 +02:00
hid-sjoy.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 2019-05-30 11:26:35 -07:00
hid-sony.c HID: Fix assumption that devices have inputs 2019-10-03 15:36:40 -04:00
hid-speedlink.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
hid-steam.c HID: steam: Fix input device disappearing 2020-01-09 10:57:41 +01:00
hid-steelseries.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
hid-sunplus.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
hid-tivo.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
hid-tmff.c HID: Fix assumption that devices have inputs 2019-10-03 15:36:40 -04:00
hid-topseed.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
hid-twinhan.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 178 2019-05-30 11:29:19 -07:00
hid-u2fzero.c HID: u2fzero: fail probe if not using USB transport 2019-04-17 16:39:43 +02:00
hid-uclogic-core.c Merge branch 'for-5.3/uclogic' into for-linus 2019-07-10 01:40:23 +02:00
hid-uclogic-params.c Merge branch 'for-5.3/uclogic' into for-linus 2019-07-10 01:40:23 +02:00
hid-uclogic-params.h HID: uclogic: Support Gray-coded rotary encoders 2019-02-21 12:00:54 +01:00
hid-uclogic-rdesc.c HID: uclogic: Add support for Ugee G5 2019-02-21 12:00:54 +01:00
hid-uclogic-rdesc.h HID: uclogic: Add support for Ugee G5 2019-02-21 12:00:54 +01:00
hid-udraw-ps3.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 282 2019-06-05 17:36:37 +02:00
hid-viewsonic.c HID: viewsonic: Support PD1011 signature pad 2019-02-21 12:00:53 +01:00
hid-waltop.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
hid-wiimote-core.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
hid-wiimote-debug.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
hid-wiimote-modules.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
hid-wiimote.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
hid-xinmo.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
hid-zpff.c HID: Fix assumption that devices have inputs 2019-10-03 15:36:40 -04:00
hid-zydacron.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
hidraw.c Merge branch 'for-5.6/hidraw' into for-linus 2020-01-27 15:49:30 +01:00
Kconfig Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/hid/hid 2020-04-01 15:18:42 -07:00
Makefile Merge branch 'for-5.7/mcp2221' into for-linus 2020-04-01 13:36:46 +02:00
uhid.c HID: hidraw, uhid: Always report EPOLLOUT 2020-01-10 15:34:28 +01:00
wacom.h HID: wacom: generic: Treat serial number and related fields as unsigned 2019-11-06 21:37:29 +01:00
wacom_sys.c HID: wacom: do not call hid_set_drvdata(hdev, NULL) 2019-08-22 17:08:09 +02:00
wacom_wac.c HID: wacom: Recognize new MobileStudio Pro PID 2019-12-18 15:24:26 +01:00
wacom_wac.h Merge branches 'for-5.2/fixes', 'for-5.3/doc', 'for-5.3/ish', 'for-5.3/logitech' and 'for-5.3/wacom' into for-linus 2019-07-10 01:39:57 +02:00