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a=openpgp; fpr=89EC3D058446217450F22848169AB7B1A4CFF8AE Precedence: bulk List-ID: X-Mailing-List: linux-input@vger.kernel.org Document the Goodix GT9916 wich is part of the "Berlin" serie of Touchscreen controllers IC from Goodix. Reviewed-by: Rob Herring Signed-off-by: Neil Armstrong --- .../bindings/input/touchscreen/goodix,gt9916.yaml | 95 ++++++++++++++++++++++ 1 file changed, 95 insertions(+) diff --git a/Documentation/devicetree/bindings/input/touchscreen/goodix,gt9916.yaml b/Documentation/devicetree/bindings/input/touchscreen/goodix,gt9916.yaml new file mode 100644 index 000000000000..d90f045ac06c --- /dev/null +++ b/Documentation/devicetree/bindings/input/touchscreen/goodix,gt9916.yaml @@ -0,0 +1,95 @@ +# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/input/touchscreen/goodix,gt9916.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Goodix Berlin series touchscreen controller + +description: The Goodix Berlin series of touchscreen controllers + be connected to either I2C or SPI buses. + +maintainers: + - Neil Armstrong + +allOf: + - $ref: touchscreen.yaml# + - $ref: /schemas/spi/spi-peripheral-props.yaml# + +properties: + compatible: + enum: + - goodix,gt9916 + + reg: + maxItems: 1 + + interrupts: + maxItems: 1 + + reset-gpios: + maxItems: 1 + + avdd-supply: + description: Analog power supply regulator on AVDD pin + + vddio-supply: + description: power supply regulator on VDDIO pin + + spi-max-frequency: true + touchscreen-inverted-x: true + touchscreen-inverted-y: true + touchscreen-size-x: true + touchscreen-size-y: true + touchscreen-swapped-x-y: true + +additionalProperties: false + +required: + - compatible + - reg + - interrupts + - avdd-supply + - touchscreen-size-x + - touchscreen-size-y + +examples: + - | + #include + #include + i2c { + #address-cells = <1>; + #size-cells = <0>; + touchscreen@5d { + compatible = "goodix,gt9916"; + reg = <0x5d>; + interrupt-parent = <&gpio>; + interrupts = <25 IRQ_TYPE_LEVEL_LOW>; + reset-gpios = <&gpio1 1 GPIO_ACTIVE_LOW>; + avdd-supply = <&ts_avdd>; + touchscreen-size-x = <1024>; + touchscreen-size-y = <768>; + }; + }; + - | + #include + #include + spi { + #address-cells = <1>; + #size-cells = <0>; + num-cs = <1>; + cs-gpios = <&gpio 2 GPIO_ACTIVE_HIGH>; + touchscreen@0 { + compatible = "goodix,gt9916"; + reg = <0>; + interrupt-parent = <&gpio>; + interrupts = <25 IRQ_TYPE_LEVEL_LOW>; + reset-gpios = <&gpio1 1 GPIO_ACTIVE_LOW>; + avdd-supply = <&ts_avdd>; + spi-max-frequency = <1000000>; + touchscreen-size-x = <1024>; + touchscreen-size-y = <768>; + }; + }; + +... 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a=openpgp; fpr=89EC3D058446217450F22848169AB7B1A4CFF8AE Precedence: bulk List-ID: X-Mailing-List: linux-input@vger.kernel.org Add initial support for the new Goodix "Berlin" touchscreen ICs over the I2C interface. 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 MTP & QRD touch panel. The current implementation only supports BerlinD, aka GT9916. [1] https://github.com/goodix/goodix_ts_berlin [2] https://git.codelinaro.org/clo/la/platform/vendor/opensource/touch-drivers Reviewed-by: Jeff LaBundy Signed-off-by: Neil Armstrong --- drivers/input/touchscreen/Kconfig | 14 ++++++ drivers/input/touchscreen/Makefile | 1 + drivers/input/touchscreen/goodix_berlin_i2c.c | 69 +++++++++++++++++++++++++++ 3 files changed, 84 insertions(+) diff --git a/drivers/input/touchscreen/Kconfig b/drivers/input/touchscreen/Kconfig index 950da599ae1a..cc7b88118158 100644 --- a/drivers/input/touchscreen/Kconfig +++ b/drivers/input/touchscreen/Kconfig @@ -419,6 +419,20 @@ config TOUCHSCREEN_GOODIX config TOUCHSCREEN_GOODIX_BERLIN_CORE tristate +config TOUCHSCREEN_GOODIX_BERLIN_I2C + tristate "Goodix Berlin I2C touchscreen" + depends on I2C + select REGMAP_I2C + select TOUCHSCREEN_GOODIX_BERLIN_CORE + help + Say Y here if you have a Goodix Berlin IC connected to + your system via I2C. + + If unsure, say N. + + To compile this driver as a module, choose M here: the + module will be called goodix_berlin_i2c. + config TOUCHSCREEN_HIDEEP tristate "HiDeep Touch IC" depends on I2C diff --git a/drivers/input/touchscreen/Makefile b/drivers/input/touchscreen/Makefile index 2e2f3e70cd2c..7ef677cf7a10 100644 --- a/drivers/input/touchscreen/Makefile +++ b/drivers/input/touchscreen/Makefile @@ -48,6 +48,7 @@ obj-$(CONFIG_TOUCHSCREEN_EXC3000) += exc3000.o obj-$(CONFIG_TOUCHSCREEN_FUJITSU) += fujitsu_ts.o obj-$(CONFIG_TOUCHSCREEN_GOODIX) += goodix_ts.o obj-$(CONFIG_TOUCHSCREEN_GOODIX_BERLIN_CORE) += goodix_berlin_core.o +obj-$(CONFIG_TOUCHSCREEN_GOODIX_BERLIN_I2C) += goodix_berlin_i2c.o obj-$(CONFIG_TOUCHSCREEN_HIDEEP) += hideep.o obj-$(CONFIG_TOUCHSCREEN_HYNITRON_CSTXXX) += hynitron_cstxxx.o obj-$(CONFIG_TOUCHSCREEN_ILI210X) += ili210x.o diff --git a/drivers/input/touchscreen/goodix_berlin_i2c.c b/drivers/input/touchscreen/goodix_berlin_i2c.c new file mode 100644 index 000000000000..6407b2258eb1 --- /dev/null +++ b/drivers/input/touchscreen/goodix_berlin_i2c.c @@ -0,0 +1,69 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * Goodix Berlin Touchscreen Driver + * + * Copyright (C) 2020 - 2021 Goodix, Inc. + * Copyright (C) 2023 Linaro Ltd. + * + * Based on goodix_ts_berlin driver. + */ +#include +#include +#include +#include + +#include "goodix_berlin.h" + +#define I2C_MAX_TRANSFER_SIZE 256 + +static const struct regmap_config goodix_berlin_i2c_regmap_conf = { + .reg_bits = 32, + .val_bits = 8, + .max_raw_read = I2C_MAX_TRANSFER_SIZE, + .max_raw_write = I2C_MAX_TRANSFER_SIZE, +}; + +/* vendor & product left unassigned here, should probably be updated from fw info */ +static const struct input_id goodix_berlin_i2c_input_id = { + .bustype = BUS_I2C, +}; + +static int goodix_berlin_i2c_probe(struct i2c_client *client) +{ + struct regmap *regmap; + + regmap = devm_regmap_init_i2c(client, &goodix_berlin_i2c_regmap_conf); + if (IS_ERR(regmap)) + return PTR_ERR(regmap); + + return goodix_berlin_probe(&client->dev, client->irq, + &goodix_berlin_i2c_input_id, regmap); +} + +static const struct i2c_device_id goodix_berlin_i2c_id[] = { + { "gt9916", 0 }, + { } +}; + +MODULE_DEVICE_TABLE(i2c, goodix_berlin_i2c_id); + +static const struct of_device_id goodix_berlin_i2c_of_match[] = { + { .compatible = "goodix,gt9916", }, + { } +}; +MODULE_DEVICE_TABLE(of, goodix_berlin_i2c_of_match); + +static struct i2c_driver goodix_berlin_i2c_driver = { + .driver = { + .name = "goodix-berlin-i2c", + .of_match_table = goodix_berlin_i2c_of_match, + .pm = pm_sleep_ptr(&goodix_berlin_pm_ops), + }, + .probe = goodix_berlin_i2c_probe, + .id_table = goodix_berlin_i2c_id, +}; +module_i2c_driver(goodix_berlin_i2c_driver); + +MODULE_LICENSE("GPL"); +MODULE_DESCRIPTION("Goodix Berlin I2C Touchscreen driver"); +MODULE_AUTHOR("Neil Armstrong ");