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Wed, 13 Dec 2023 09:13:20 -0800 (PST) From: Neil Armstrong Subject: [PATCH v13 0/4] Input: add initial support for Goodix Berlin touchscreen IC Date: Wed, 13 Dec 2023 18:13:14 +0100 Message-Id: <20231213-topic-goodix-berlin-upstream-initial-v13-0-5d7a26a5eaa2@linaro.org> Precedence: bulk X-Mailing-List: linux-arm-msm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-B4-Tracking: v=1; b=H4sIACrmeWUC/53TwW7DIAwA0F+pch6TTSDATvuPaQcgpkXqkoqkV aeq/z6nh7UTl6xHLPRsbHxpJiqZpuZtc2kKnfKUx4EP2L5smrjzw5ZE7jnQSJAtdNCJeTzkKLb j2OezCFT2eRDHwzQX8l8iD3nOfi+Cd4YsRZtUbJgKfiIRih/ijrHhuN9z8FAo5fMt+ccnn3d5m sfyfavlhEv0n1lPKEAoD0ZhsJ5S/87XfBlfx7Jtlgwn+YwqWZVd4McQkgOq1PYZtWU1gTYmku8 NuEpVz6iKVXDKRGVdIDSVqu+qBVyp6kU1TmrpWq1dW6ndXXUoV6odq0FRTF65FFw9LfOrIsBa1 bDKpTKISZO1lWof1XalallFgzwIBEl9V6nuQZVr++oWtU3cBGsN6lpFeGTXFos8LWEtUZSkMUK o3ft6Ia5fr2W/dFSGnAETof4HeF8wlODWusuGkU/JU9DcDv3HvV6vP5EPwGanBAAA To: Dmitry Torokhov , linux-input@vger.kernel.org Cc: Rob Herring , Krzysztof Kozlowski , Conor Dooley , Bastien Nocera , Hans de Goede , Henrik Rydberg , Jeff LaBundy , linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Neil Armstrong , Rob Herring X-Mailer: b4 0.12.4 X-Developer-Signature: v=1; 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a=openpgp; fpr=89EC3D058446217450F22848169AB7B1A4CFF8AE These touchscreen ICs support SPI, I2C and I3C interface, up to 10 finger touch, stylus and gestures events. This initial driver is derived from the Goodix goodix_ts_berlin available at [1] and [2] and only supports the GT9916 IC present on the Qualcomm SM8550/SM8650 MTP & QRD touch panel. The current implementation only supports BerlinD, aka GT9916. Support for advanced features like: - Firmware & config update - Stylus events - Gestures events - Previous revisions support (BerlinA or BerlinB) is not included in current version. The current support will work with currently flashed firmware and config, and bail out if firmware or config aren't flashed yet. [1] https://github.com/goodix/goodix_ts_berlin [2] https://git.codelinaro.org/clo/la/platform/vendor/opensource/touch-drivers Signed-off-by: Neil Armstrong --- Changes in v13: - Thanks to Dmitry's suggestion: - Move core defines and structs into goodix_berlin_core.c - Comments typos and rephrasings - Identation fixes - Refactor of goodix_berlin_power_on - goodix_berlin_get_ic_info move to __free(kfree) to avoid leaking - Added comment explaining how data is retrieved in irq handler - Link to v12: https://lore.kernel.org/r/20231209-topic-goodix-berlin-upstream-initial-v12-0-eaffaeb53fb5@linaro.org Changes in v12: - Rebased on next-20231208 - Link to v11: https://lore.kernel.org/r/20231106-topic-goodix-berlin-upstream-initial-v11-0-5c47e9707c03@linaro.org Changes in v11: - Fixes according to Jeff's review: - s/dev_info/dev_err/ in goodix_berlin_get_ic_info() - remove spurious return instead of goto in goodix_berlin_get_ic_info() - added back dropped msleep() in goodix_berlin_request_handle_reset() - Link to v10: https://lore.kernel.org/r/20231023-topic-goodix-berlin-upstream-initial-v10-0-88eec2e51c0b@linaro.org Changes in v10: - Fix according to Dmitry's review: - move goodix_berlin_get_ic_info() afe_data to heap - merge the goodix_berlin_parse_finger() loops and skip invalid fingers instead of returning - remove unwanted goodix_berlin_touch_handler() "static" for buffer - only call goodix_berlin_request_handle_reset() if gpio was provided - use "error = func(); if(error) return error;" instead of "return func()" when function handles multiple error cases - Link to v9: https://lore.kernel.org/r/20231021-topic-goodix-berlin-upstream-initial-v9-0-13fb4e887156@linaro.org Changes in v9: - Rebased on next-20231020 - Link to v8: https://lore.kernel.org/r/20231003-topic-goodix-berlin-upstream-initial-v8-0-171606102ed6@linaro.org Changes in v8: - Add missing bitfield.h include in core - Link to v7: https://lore.kernel.org/r/20231002-topic-goodix-berlin-upstream-initial-v7-0-792fb91f5e88@linaro.org Changes in v7: - rebased on v6.6-rc3 - Link to v6: https://lore.kernel.org/r/20230912-topic-goodix-berlin-upstream-initial-v6-0-b4ecfa49fb9d@linaro.org Changes in v6: - rebased on v6.6-rc1 - changed commit message prefix to match the other Input commits - Link to v5: https://lore.kernel.org/r/20230801-topic-goodix-berlin-upstream-initial-v5-0-079252935593@linaro.org Changes in v5: - rebased on next-20230801 - Link to v4: https://lore.kernel.org/r/20230606-topic-goodix-berlin-upstream-initial-v4-0-0947c489be17@linaro.org Changes in v4: - Core updates: - drop kconfig depends, deps will be handled by _SPI and _I2C - change power_on() error labels - print errors on all dev_err() prints - remove useless default variable initialization - switch irq touch checksum error to dev_err() - add Jeff's review tag - I2C changes - change REGMAP_I2C Kconfig from depends to select - add Jeff's review tag - SPI changes - add select REGMAP to Kconfig - added GOODIX_BERLIN_ prefix to defines - switched from ret to error - add Jeff's review tag - Link to v3: https://lore.kernel.org/r/20230606-topic-goodix-berlin-upstream-initial-v3-0-f0577cead709@linaro.org Changes in v3: - Another guge cleanups after Jeff's review: - appended goodix_berlin_ before all defines - removed some unused defines - removed retries on most of read functions, can be added back later - added __le to ic_info structures - reworked and simplified irq handling, dropped enum and ts_event structs - added struct for touch data - simplified and cleaned goodix_berlin_check_checksum & goodix_berlin_is_dummy_data - moved touch_data_addr to the end of the main code_data - reworked probe to get_irq last and right before setip input device - cleaned probe by removing the "cd->dev" - added short paragraph to justify new driver for berlin devices - defined all offsets & masks - Added bindings review tag - Link to v2: https://lore.kernel.org/r/20230606-topic-goodix-berlin-upstream-initial-v2-0-26bc8fe1e90e@linaro.org Changes in v2: - Huge cleanups after Jeff's review: - switch to error instead of ret - drop dummy vendor/product ids - drop unused defined/enums - drop unused ic_info and only keep needes values - cleanup namings and use goodix_berlin_ everywhere - fix regulator setup - fix default variables value when assigned afterwars - removed indirections - dropped debugfs - cleaned input_dev setup - dropped _remove() - sync'ed i2c and spi drivers - fixed yaml bindings - Link to v1: https://lore.kernel.org/r/20230606-topic-goodix-berlin-upstream-initial-v1-0-4a0741b8aefd@linaro.org --- Neil Armstrong (4): dt-bindings: input: document Goodix Berlin Touchscreen IC Input: add core support for Goodix Berlin Touchscreen IC Input: goodix-berlin - add I2C support for Goodix Berlin Touchscreen IC Input: goodix-berlin - add SPI support for Goodix Berlin Touchscreen IC .../bindings/input/touchscreen/goodix,gt9916.yaml | 95 +++ drivers/input/touchscreen/Kconfig | 31 + drivers/input/touchscreen/Makefile | 3 + drivers/input/touchscreen/goodix_berlin.h | 24 + drivers/input/touchscreen/goodix_berlin_core.c | 766 +++++++++++++++++++++ drivers/input/touchscreen/goodix_berlin_i2c.c | 74 ++ drivers/input/touchscreen/goodix_berlin_spi.c | 177 +++++ 7 files changed, 1170 insertions(+) --- base-commit: bc63de6e6ba0b16652c5fb4b9c9916b9e7ca1f23 change-id: 20230606-topic-goodix-berlin-upstream-initial-ba97e8ec8f4c Best regards,