diff options
Diffstat (limited to 'drivers/input/touchscreen')
44 files changed, 1242 insertions, 295 deletions
diff --git a/drivers/input/touchscreen/Kconfig b/drivers/input/touchscreen/Kconfig index 7a4884ad198b..fb91f2d4049e 100644 --- a/drivers/input/touchscreen/Kconfig +++ b/drivers/input/touchscreen/Kconfig @@ -1,3 +1,4 @@ +# SPDX-License-Identifier: GPL-2.0-only # # Touchscreen driver configuration # @@ -1312,4 +1313,14 @@ config TOUCHSCREEN_ROHM_BU21023 To compile this driver as a module, choose M here: the module will be called bu21023_ts. +config TOUCHSCREEN_IQS5XX + tristate "Azoteq IQS550/572/525 trackpad/touchscreen controller" + depends on I2C + help + Say Y to enable support for the Azoteq IQS550/572/525 + family of trackpad/touchscreen controllers. + + To compile this driver as a module, choose M here: the + module will be called iqs5xx. + endif diff --git a/drivers/input/touchscreen/Makefile b/drivers/input/touchscreen/Makefile index fcc7605fba8d..084a596a0c8b 100644 --- a/drivers/input/touchscreen/Makefile +++ b/drivers/input/touchscreen/Makefile @@ -110,3 +110,4 @@ obj-$(CONFIG_TOUCHSCREEN_ZFORCE) += zforce_ts.o obj-$(CONFIG_TOUCHSCREEN_COLIBRI_VF50) += colibri-vf50-ts.o obj-$(CONFIG_TOUCHSCREEN_ROHM_BU21023) += rohm_bu21023.o obj-$(CONFIG_TOUCHSCREEN_RASPBERRYPI_FW) += raspberrypi-ts.o +obj-$(CONFIG_TOUCHSCREEN_IQS5XX) += iqs5xx.o diff --git a/drivers/input/touchscreen/ad7877.c b/drivers/input/touchscreen/ad7877.c index 5cfe477ec992..9b652f61837f 100644 --- a/drivers/input/touchscreen/ad7877.c +++ b/drivers/input/touchscreen/ad7877.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0-or-later /* * Copyright (C) 2006-2008 Michael Hennerich, Analog Devices Inc. * @@ -6,21 +7,6 @@ * * Bugs: Enter bugs at http://blackfin.uclinux.org/ * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, see the file COPYING, or write - * to the Free Software Foundation, Inc., - * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA - * * History: * Copyright (c) 2005 David Brownell * Copyright (c) 2006 Nokia Corporation diff --git a/drivers/input/touchscreen/ad7879-i2c.c b/drivers/input/touchscreen/ad7879-i2c.c index 49b902b10c5f..0f20a1fdcdba 100644 --- a/drivers/input/touchscreen/ad7879-i2c.c +++ b/drivers/input/touchscreen/ad7879-i2c.c @@ -1,9 +1,8 @@ +// SPDX-License-Identifier: GPL-2.0-or-later /* * AD7879-1/AD7889-1 touchscreen (I2C bus) * * Copyright (C) 2008-2010 Michael Hennerich, Analog Devices Inc. - * - * Licensed under the GPL-2 or later. */ #include <linux/input.h> /* BUS_I2C */ diff --git a/drivers/input/touchscreen/ad7879-spi.c b/drivers/input/touchscreen/ad7879-spi.c index 3457a5626d75..50e889846800 100644 --- a/drivers/input/touchscreen/ad7879-spi.c +++ b/drivers/input/touchscreen/ad7879-spi.c @@ -1,9 +1,8 @@ +// SPDX-License-Identifier: GPL-2.0-or-later /* * AD7879/AD7889 touchscreen (SPI bus) * * Copyright (C) 2008-2010 Michael Hennerich, Analog Devices Inc. - * - * Licensed under the GPL-2 or later. */ #include <linux/input.h> /* BUS_SPI */ diff --git a/drivers/input/touchscreen/ad7879.c b/drivers/input/touchscreen/ad7879.c index 3a016f43fb85..556a2af46e18 100644 --- a/drivers/input/touchscreen/ad7879.c +++ b/drivers/input/touchscreen/ad7879.c @@ -1,10 +1,9 @@ +// SPDX-License-Identifier: GPL-2.0-or-later /* * AD7879/AD7889 based touchscreen and GPIO driver * * Copyright (C) 2008-2010 Michael Hennerich, Analog Devices Inc. * - * Licensed under the GPL-2 or later. - * * History: * Copyright (c) 2005 David Brownell * Copyright (c) 2006 Nokia Corporation diff --git a/drivers/input/touchscreen/ad7879.h b/drivers/input/touchscreen/ad7879.h index 7e43066a4b68..ae8aa1428e56 100644 --- a/drivers/input/touchscreen/ad7879.h +++ b/drivers/input/touchscreen/ad7879.h @@ -1,9 +1,8 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ /* * AD7879/AD7889 touchscreen (bus interfaces) * * Copyright (C) 2008-2010 Michael Hennerich, Analog Devices Inc. - * - * Licensed under the GPL-2 or later. */ #ifndef _AD7879_H_ diff --git a/drivers/input/touchscreen/atmel_mxt_ts.c b/drivers/input/touchscreen/atmel_mxt_ts.c index 5c63d25ce84e..19378f200c63 100644 --- a/drivers/input/touchscreen/atmel_mxt_ts.c +++ b/drivers/input/touchscreen/atmel_mxt_ts.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0-or-later /* * Atmel maXTouch Touchscreen driver * @@ -7,12 +8,6 @@ * Copyright (C) 2016 Zodiac Inflight Innovations * * Author: Joonyoung Shim <[email protected]> - * - * This program is free software; you can redistribute it and/or modify it - * under the terms of the GNU General Public License as published by the - * Free Software Foundation; either version 2 of the License, or (at your - * option) any later version. - * */ #include <linux/acpi.h> diff --git a/drivers/input/touchscreen/bu21013_ts.c b/drivers/input/touchscreen/bu21013_ts.c index 4fa5da8d5fa8..1d703e230ac3 100644 --- a/drivers/input/touchscreen/bu21013_ts.c +++ b/drivers/input/touchscreen/bu21013_ts.c @@ -1,7 +1,7 @@ +// SPDX-License-Identifier: GPL-2.0-only /* * Copyright (C) ST-Ericsson SA 2010 * Author: Naveen Kumar G <[email protected]> for ST-Ericsson - * License terms:GNU General Public License (GPL) version 2 */ #include <linux/kernel.h> diff --git a/drivers/input/touchscreen/chipone_icn8318.c b/drivers/input/touchscreen/chipone_icn8318.c index 0bf14067c167..d91d2fd78649 100644 --- a/drivers/input/touchscreen/chipone_icn8318.c +++ b/drivers/input/touchscreen/chipone_icn8318.c @@ -1,13 +1,9 @@ +// SPDX-License-Identifier: GPL-2.0-or-later /* * Driver for ChipOne icn8318 i2c touchscreen controller * * Copyright (c) 2015 Red Hat Inc. * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * * Red Hat authors: * Hans de Goede <[email protected]> */ diff --git a/drivers/input/touchscreen/colibri-vf50-ts.c b/drivers/input/touchscreen/colibri-vf50-ts.c index 82ca5ab65cec..0e40897949bb 100644 --- a/drivers/input/touchscreen/colibri-vf50-ts.c +++ b/drivers/input/touchscreen/colibri-vf50-ts.c @@ -1,14 +1,10 @@ +// SPDX-License-Identifier: GPL-2.0-or-later /* * Toradex Colibri VF50 Touchscreen driver * * Copyright 2015 Toradex AG * * Originally authored by Stefan Agner for 3.0 kernel - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. */ #include <linux/delay.h> diff --git a/drivers/input/touchscreen/cy8ctmg110_ts.c b/drivers/input/touchscreen/cy8ctmg110_ts.c index cc1d1350074e..f465bae618fe 100644 --- a/drivers/input/touchscreen/cy8ctmg110_ts.c +++ b/drivers/input/touchscreen/cy8ctmg110_ts.c @@ -1,22 +1,10 @@ +// SPDX-License-Identifier: GPL-2.0-only /* * Driver for cypress touch screen controller * * Copyright (c) 2009 Aava Mobile * * Some cleanups by Alan Cox <[email protected]> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ #include <linux/module.h> diff --git a/drivers/input/touchscreen/da9052_tsi.c b/drivers/input/touchscreen/da9052_tsi.c index b5dfd5944cc3..f91d0e02ddae 100644 --- a/drivers/input/touchscreen/da9052_tsi.c +++ b/drivers/input/touchscreen/da9052_tsi.c @@ -1,15 +1,10 @@ +// SPDX-License-Identifier: GPL-2.0-or-later /* * TSI driver for Dialog DA9052 * * Copyright(c) 2012 Dialog Semiconductor Ltd. * * Author: David Dajun Chen <[email protected]> - * - * This program is free software; you can redistribute it and/or modify it - * under the terms of the GNU General Public License as published by the - * Free Software Foundation; either version 2 of the License, or (at your - * option) any later version. - * */ #include <linux/module.h> #include <linux/input.h> diff --git a/drivers/input/touchscreen/edt-ft5x06.c b/drivers/input/touchscreen/edt-ft5x06.c index 702bfda7ee77..c639ebce914c 100644 --- a/drivers/input/touchscreen/edt-ft5x06.c +++ b/drivers/input/touchscreen/edt-ft5x06.c @@ -1,20 +1,8 @@ +// SPDX-License-Identifier: GPL-2.0 /* * Copyright (C) 2012 Simon Budig, <[email protected]> * Daniel Wagener <[email protected]> (M09 firmware support) * Lothar Waßmann <[email protected]> (DT support) - * - * This software is licensed under the terms of the GNU General Public - * License version 2, as published by the Free Software Foundation, and - * may be copied, distributed, and modified under those terms. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public - * License along with this library; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ /* @@ -39,7 +27,6 @@ #include <linux/gpio/consumer.h> #include <linux/input/mt.h> #include <linux/input/touchscreen.h> -#include <linux/of_device.h> #define WORK_REGISTER_THRESHOLD 0x00 #define WORK_REGISTER_REPORT_RATE 0x08 @@ -1073,7 +1060,7 @@ static int edt_ft5x06_ts_probe(struct i2c_client *client, return -ENOMEM; } - chip_data = of_device_get_match_data(&client->dev); + chip_data = device_get_match_data(&client->dev); if (!chip_data) chip_data = (const struct edt_i2c_chip_data *)id->driver_data; if (!chip_data || !chip_data->max_support_points) { @@ -1254,7 +1241,6 @@ static const struct i2c_device_id edt_ft5x06_ts_id[] = { }; MODULE_DEVICE_TABLE(i2c, edt_ft5x06_ts_id); -#ifdef CONFIG_OF static const struct of_device_id edt_ft5x06_of_match[] = { { .compatible = "edt,edt-ft5206", .data = &edt_ft5x06_data }, { .compatible = "edt,edt-ft5306", .data = &edt_ft5x06_data }, @@ -1266,12 +1252,11 @@ static const struct of_device_id edt_ft5x06_of_match[] = { { /* sentinel */ } }; MODULE_DEVICE_TABLE(of, edt_ft5x06_of_match); -#endif static struct i2c_driver edt_ft5x06_ts_driver = { .driver = { .name = "edt_ft5x06", - .of_match_table = of_match_ptr(edt_ft5x06_of_match), + .of_match_table = edt_ft5x06_of_match, .pm = &edt_ft5x06_ts_pm_ops, }, .id_table = edt_ft5x06_ts_id, @@ -1283,4 +1268,4 @@ module_i2c_driver(edt_ft5x06_ts_driver); MODULE_AUTHOR("Simon Budig <[email protected]>"); MODULE_DESCRIPTION("EDT FT5x06 I2C Touchscreen Driver"); -MODULE_LICENSE("GPL"); +MODULE_LICENSE("GPL v2"); diff --git a/drivers/input/touchscreen/eeti_ts.c b/drivers/input/touchscreen/eeti_ts.c index 7fe41965c5d1..c6b85ba7f991 100644 --- a/drivers/input/touchscreen/eeti_ts.c +++ b/drivers/input/touchscreen/eeti_ts.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0-or-later /* * Touch Screen driver for EETI's I2C connected touch screen panels * Copyright (c) 2009,2018 Daniel Mack <[email protected]> @@ -8,20 +9,6 @@ * Based on migor_ts.c * Copyright (c) 2008 Magnus Damm * Copyright (c) 2007 Ujjwal Pande <[email protected]> - * - * This file is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public - * License as published by the Free Software Foundation; either - * version 2 of the License, or (at your option) any later version. - * - * This file is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * General Public License for more details. - * - * You should have received a copy of the GNU General Public - * License along with this library; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ #include <linux/module.h> diff --git a/drivers/input/touchscreen/ektf2127.c b/drivers/input/touchscreen/ektf2127.c index 28fa1b36f7a5..eadd389cf81f 100644 --- a/drivers/input/touchscreen/ektf2127.c +++ b/drivers/input/touchscreen/ektf2127.c @@ -1,14 +1,10 @@ +// SPDX-License-Identifier: GPL-2.0-or-later /* * Driver for ELAN eKTF2127 i2c touchscreen controller * * For this driver the layout of the Chipone icn8318 i2c * touchscreencontroller is used. * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * * Author: * Michel Verlaan <[email protected]> * Siebren Vroegindeweij <[email protected]> diff --git a/drivers/input/touchscreen/goodix.c b/drivers/input/touchscreen/goodix.c index f57d82220a88..f7c1d168dd89 100644 --- a/drivers/input/touchscreen/goodix.c +++ b/drivers/input/touchscreen/goodix.c @@ -27,6 +27,7 @@ #include <linux/delay.h> #include <linux/irq.h> #include <linux/interrupt.h> +#include <linux/regulator/consumer.h> #include <linux/slab.h> #include <linux/acpi.h> #include <linux/of.h> @@ -47,6 +48,8 @@ struct goodix_ts_data { struct touchscreen_properties prop; unsigned int max_touch_num; unsigned int int_trigger_type; + struct regulator *avdd28; + struct regulator *vddio; struct gpio_desc *gpiod_int; struct gpio_desc *gpiod_rst; u16 id; @@ -216,6 +219,7 @@ static const struct goodix_chip_data *goodix_get_chip_data(u16 id) { switch (id) { case 1151: + case 5663: case 5688: return >1x_chip_data; @@ -532,6 +536,24 @@ static int goodix_get_gpio_config(struct goodix_ts_data *ts) return -EINVAL; dev = &ts->client->dev; + ts->avdd28 = devm_regulator_get(dev, "AVDD28"); + if (IS_ERR(ts->avdd28)) { + error = PTR_ERR(ts->avdd28); + if (error != -EPROBE_DEFER) + dev_err(dev, + "Failed to get AVDD28 regulator: %d\n", error); + return error; + } + + ts->vddio = devm_regulator_get(dev, "VDDIO"); + if (IS_ERR(ts->vddio)) { + error = PTR_ERR(ts->vddio); + if (error != -EPROBE_DEFER) + dev_err(dev, + "Failed to get VDDIO regulator: %d\n", error); + return error; + } + /* Get the interrupt GPIO pin number */ gpiod = devm_gpiod_get_optional(dev, GOODIX_GPIO_INT_NAME, GPIOD_IN); if (IS_ERR(gpiod)) { @@ -764,6 +786,14 @@ err_release_cfg: complete_all(&ts->firmware_loading_complete); } +static void goodix_disable_regulators(void *arg) +{ + struct goodix_ts_data *ts = arg; + + regulator_disable(ts->vddio); + regulator_disable(ts->avdd28); +} + static int goodix_ts_probe(struct i2c_client *client, const struct i2c_device_id *id) { @@ -789,6 +819,29 @@ static int goodix_ts_probe(struct i2c_client *client, if (error) return error; + /* power up the controller */ + error = regulator_enable(ts->avdd28); + if (error) { + dev_err(&client->dev, + "Failed to enable AVDD28 regulator: %d\n", + error); + return error; + } + + error = regulator_enable(ts->vddio); + if (error) { + dev_err(&client->dev, + "Failed to enable VDDIO regulator: %d\n", + error); + regulator_disable(ts->avdd28); + return error; + } + + error = devm_add_action_or_reset(&client->dev, + goodix_disable_regulators, ts); + if (error) + return error; + if (ts->gpiod_int && ts->gpiod_rst) { /* reset the controller */ error = goodix_reset(ts); @@ -945,6 +998,7 @@ MODULE_DEVICE_TABLE(acpi, goodix_acpi_match); #ifdef CONFIG_OF static const struct of_device_id goodix_of_match[] = { { .compatible = "goodix,gt1151" }, + { .compatible = "goodix,gt5663" }, { .compatible = "goodix,gt5688" }, { .compatible = "goodix,gt911" }, { .compatible = "goodix,gt9110" }, diff --git a/drivers/input/touchscreen/gunze.c b/drivers/input/touchscreen/gunze.c index 56cf1a1ea3ea..e07e8e0fe8ea 100644 --- a/drivers/input/touchscreen/gunze.c +++ b/drivers/input/touchscreen/gunze.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0-or-later /* * Copyright (c) 2000-2001 Vojtech Pavlik */ @@ -7,19 +8,6 @@ */ /* - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ #include <linux/errno.h> diff --git a/drivers/input/touchscreen/hp680_ts_input.c b/drivers/input/touchscreen/hp680_ts_input.c index 85cf9bee8018..818f2e48be5a 100644 --- a/drivers/input/touchscreen/hp680_ts_input.c +++ b/drivers/input/touchscreen/hp680_ts_input.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0-only #include <linux/input.h> #include <linux/module.h> #include <linux/init.h> diff --git a/drivers/input/touchscreen/ili210x.c b/drivers/input/touchscreen/ili210x.c index 9169aa03958a..e9006407c9bc 100644 --- a/drivers/input/touchscreen/ili210x.c +++ b/drivers/input/touchscreen/ili210x.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0-only #include <linux/module.h> #include <linux/i2c.h> #include <linux/interrupt.h> diff --git a/drivers/input/touchscreen/iqs5xx.c b/drivers/input/touchscreen/iqs5xx.c new file mode 100644 index 000000000000..b832fe062645 --- /dev/null +++ b/drivers/input/touchscreen/iqs5xx.c @@ -0,0 +1,1133 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Azoteq IQS550/572/525 Trackpad/Touchscreen Controller + * + * Copyright (C) 2018 + * Author: Jeff LaBundy <[email protected]> + * + * These devices require firmware exported from a PC-based configuration tool + * made available by the vendor. Firmware files may be pushed to the device's + * nonvolatile memory by writing the filename to the 'fw_file' sysfs control. + * + * Link to PC-based configuration tool and data sheet: http://www.azoteq.com/ + */ + +#include <linux/delay.h> +#include <linux/device.h> +#include <linux/err.h> +#include <linux/firmware.h> +#include <linux/gpio/consumer.h> +#include <linux/i2c.h> +#include <linux/input.h> +#include <linux/input/mt.h> +#include <linux/input/touchscreen.h> +#include <linux/interrupt.h> +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/of_device.h> +#include <linux/slab.h> +#include <asm/unaligned.h> + +#define IQS5XX_FW_FILE_LEN 64 +#define IQS5XX_NUM_RETRIES 10 +#define IQS5XX_NUM_POINTS 256 +#define IQS5XX_NUM_CONTACTS 5 +#define IQS5XX_WR_BYTES_MAX 2 + +#define IQS5XX_PROD_NUM_IQS550 40 +#define IQS5XX_PROD_NUM_IQS572 58 +#define IQS5XX_PROD_NUM_IQS525 52 +#define IQS5XX_PROJ_NUM_A000 0 +#define IQS5XX_PROJ_NUM_B000 15 +#define IQS5XX_MAJOR_VER_MIN 2 + +#define IQS5XX_RESUME 0x00 +#define IQS5XX_SUSPEND 0x01 + +#define IQS5XX_SW_INPUT_EVENT 0x10 +#define IQS5XX_SETUP_COMPLETE 0x40 +#define IQS5XX_EVENT_MODE 0x01 +#define IQS5XX_TP_EVENT 0x04 + +#define IQS5XX_FLIP_X 0x01 +#define IQS5XX_FLIP_Y 0x02 +#define IQS5XX_SWITCH_XY_AXIS 0x04 + +#define IQS5XX_PROD_NUM 0x0000 +#define IQS5XX_ABS_X 0x0016 +#define IQS5XX_ABS_Y 0x0018 +#define IQS5XX_SYS_CTRL0 0x0431 +#define IQS5XX_SYS_CTRL1 0x0432 +#define IQS5XX_SYS_CFG0 0x058E +#define IQS5XX_SYS_CFG1 0x058F +#define IQS5XX_TOTAL_RX 0x063D +#define IQS5XX_TOTAL_TX 0x063E +#define IQS5XX_XY_CFG0 0x0669 +#define IQS5XX_X_RES 0x066E +#define IQS5XX_Y_RES 0x0670 +#define IQS5XX_CHKSM 0x83C0 +#define IQS5XX_APP 0x8400 +#define IQS5XX_CSTM 0xBE00 +#define IQS5XX_PMAP_END 0xBFFF +#define IQS5XX_END_COMM 0xEEEE + +#define IQS5XX_CHKSM_LEN (IQS5XX_APP - IQS5XX_CHKSM) +#define IQS5XX_APP_LEN (IQS5XX_CSTM - IQS5XX_APP) +#define IQS5XX_CSTM_LEN (IQS5XX_PMAP_END + 1 - IQS5XX_CSTM) +#define IQS5XX_PMAP_LEN (IQS5XX_PMAP_END + 1 - IQS5XX_CHKSM) + +#define IQS5XX_REC_HDR_LEN 4 +#define IQS5XX_REC_LEN_MAX 255 +#define IQS5XX_REC_TYPE_DATA 0x00 +#define IQS5XX_REC_TYPE_EOF 0x01 + +#define IQS5XX_BL_ADDR_MASK 0x40 +#define IQS5XX_BL_CMD_VER 0x00 +#define IQS5XX_BL_CMD_READ 0x01 +#define IQS5XX_BL_CMD_EXEC 0x02 +#define IQS5XX_BL_CMD_CRC 0x03 +#define IQS5XX_BL_BLK_LEN_MAX 64 +#define IQS5XX_BL_ID 0x0200 +#define IQS5XX_BL_STATUS_RESET 0x00 +#define IQS5XX_BL_STATUS_AVAIL 0xA5 +#define IQS5XX_BL_STATUS_NONE 0xEE +#define IQS5XX_BL_CRC_PASS 0x00 +#define IQS5XX_BL_CRC_FAIL 0x01 +#define IQS5XX_BL_ATTEMPTS 3 + +struct iqs5xx_private { + struct i2c_client *client; + struct input_dev *input; + struct gpio_desc *reset_gpio; + struct mutex lock; + u8 bl_status; +}; + +struct iqs5xx_dev_id_info { + __be16 prod_num; + __be16 proj_num; + u8 major_ver; + u8 minor_ver; + u8 bl_status; +} __packed; + +struct iqs5xx_ihex_rec { + char start; + char len[2]; + char addr[4]; + char type[2]; + char data[2]; +} __packed; + +struct iqs5xx_touch_data { + __be16 abs_x; + __be16 abs_y; + __be16 strength; + u8 area; +} __packed; + +static int iqs5xx_read_burst(struct i2c_client *client, + u16 reg, void *val, u16 len) +{ + __be16 reg_buf = cpu_to_be16(reg); + int ret, i; + struct i2c_msg msg[] = { + { + .addr = client->addr, + .flags = 0, + .len = sizeof(reg_buf), + .buf = (u8 *)®_buf, + }, + { + .addr = client->addr, + .flags = I2C_M_RD, + .len = len, + .buf = (u8 *)val, + }, + }; + + /* + * The first addressing attempt outside of a communication window fails + * and must be retried, after which the device clock stretches until it + * is available. + */ + for (i = 0; i < IQS5XX_NUM_RETRIES; i++) { + ret = i2c_transfer(client->adapter, msg, ARRAY_SIZE(msg)); + if (ret == ARRAY_SIZE(msg)) + return 0; + + usleep_range(200, 300); + } + + if (ret >= 0) + ret = -EIO; + + dev_err(&client->dev, "Failed to read from address 0x%04X: %d\n", + reg, ret); + + return ret; +} + +static int iqs5xx_read_word(struct i2c_client *client, u16 reg, u16 *val) +{ + __be16 val_buf; + int error; + + error = iqs5xx_read_burst(client, reg, &val_buf, sizeof(val_buf)); + if (error) + return error; + + *val = be16_to_cpu(val_buf); + + return 0; +} + +static int iqs5xx_read_byte(struct i2c_client *client, u16 reg, u8 *val) +{ + return iqs5xx_read_burst(client, reg, val, sizeof(*val)); +} + +static int iqs5xx_write_burst(struct i2c_client *client, + u16 reg, const void *val, u16 len) +{ + int ret, i; + u16 mlen = sizeof(reg) + len; + u8 mbuf[sizeof(reg) + IQS5XX_WR_BYTES_MAX]; + + if (len > IQS5XX_WR_BYTES_MAX) + return -EINVAL; + + put_unaligned_be16(reg, mbuf); + memcpy(mbuf + sizeof(reg), val, len); + + /* + * The first addressing attempt outside of a communication window fails + * and must be retried, after which the device clock stretches until it + * is available. + */ + for (i = 0; i < IQS5XX_NUM_RETRIES; i++) { + ret = i2c_master_send(client, mbuf, mlen); + if (ret == mlen) + return 0; + + usleep_range(200, 300); + } + + if (ret >= 0) + ret = -EIO; + + dev_err(&client->dev, "Failed to write to address 0x%04X: %d\n", + reg, ret); + + return ret; +} + +static int iqs5xx_write_word(struct i2c_client *client, u16 reg, u16 val) +{ + __be16 val_buf = cpu_to_be16(val); + + return iqs5xx_write_burst(client, reg, &val_buf, sizeof(val_buf)); +} + +static int iqs5xx_write_byte(struct i2c_client *client, u16 reg, u8 val) +{ + return iqs5xx_write_burst(client, reg, &val, sizeof(val)); +} + +static void iqs5xx_reset(struct i2c_client *client) +{ + struct iqs5xx_private *iqs5xx = i2c_get_clientdata(client); + + gpiod_set_value_cansleep(iqs5xx->reset_gpio, 1); + usleep_range(200, 300); + + gpiod_set_value_cansleep(iqs5xx->reset_gpio, 0); +} + +static int iqs5xx_bl_cmd(struct i2c_client *client, u8 bl_cmd, u16 bl_addr) +{ + struct i2c_msg msg; + int ret; + u8 mbuf[sizeof(bl_cmd) + sizeof(bl_addr)]; + + msg.addr = client->addr ^ IQS5XX_BL_ADDR_MASK; + msg.flags = 0; + msg.len = sizeof(bl_cmd); + msg.buf = mbuf; + + *mbuf = bl_cmd; + + switch (bl_cmd) { + case IQS5XX_BL_CMD_VER: + case IQS5XX_BL_CMD_CRC: + case IQS5XX_BL_CMD_EXEC: + break; + case IQS5XX_BL_CMD_READ: + msg.len += sizeof(bl_addr); + put_unaligned_be16(bl_addr, mbuf + sizeof(bl_cmd)); + break; + default: + return -EINVAL; + } + + ret = i2c_transfer(client->adapter, &msg, 1); + if (ret != 1) + goto msg_fail; + + switch (bl_cmd) { + case IQS5XX_BL_CMD_VER: + msg.len = sizeof(u16); + break; + case IQS5XX_BL_CMD_CRC: + msg.len = sizeof(u8); + /* + * This delay saves the bus controller the trouble of having to + * tolerate a relatively long clock-stretching period while the + * CRC is calculated. + */ + msleep(50); + break; + case IQS5XX_BL_CMD_EXEC: + usleep_range(10000, 10100); + /* fall through */ + default: + return 0; + } + + msg.flags = I2C_M_RD; + + ret = i2c_transfer(client->adapter, &msg, 1); + if (ret != 1) + goto msg_fail; + + if (bl_cmd == IQS5XX_BL_CMD_VER && + get_unaligned_be16(mbuf) != IQS5XX_BL_ID) { + dev_err(&client->dev, "Unrecognized bootloader ID: 0x%04X\n", + get_unaligned_be16(mbuf)); + return -EINVAL; + } + + if (bl_cmd == IQS5XX_BL_CMD_CRC && *mbuf != IQS5XX_BL_CRC_PASS) { + dev_err(&client->dev, "Bootloader CRC failed\n"); + return -EIO; + } + + return 0; + +msg_fail: + if (ret >= 0) + ret = -EIO; + + if (bl_cmd != IQS5XX_BL_CMD_VER) + dev_err(&client->dev, + "Unsuccessful bootloader command 0x%02X: %d\n", + bl_cmd, ret); + + return ret; +} + +static int iqs5xx_bl_open(struct i2c_client *client) +{ + int error, i, j; + + /* + * The device opens a bootloader polling window for 2 ms following the + * release of reset. If the host cannot establish communication during + * this time frame, it must cycle reset again. + */ + for (i = 0; i < IQS5XX_BL_ATTEMPTS; i++) { + iqs5xx_reset(client); + + for (j = 0; j < IQS5XX_NUM_RETRIES; j++) { + error = iqs5xx_bl_cmd(client, IQS5XX_BL_CMD_VER, 0); + if (!error || error == -EINVAL) + return error; + } + } + + dev_err(&client->dev, "Failed to open bootloader: %d\n", error); + + return error; +} + +static int iqs5xx_bl_write(struct i2c_client *client, + u16 bl_addr, u8 *pmap_data, u16 pmap_len) +{ + struct i2c_msg msg; + int ret, i; + u8 mbuf[sizeof(bl_addr) + IQS5XX_BL_BLK_LEN_MAX]; + + if (pmap_len % IQS5XX_BL_BLK_LEN_MAX) + return -EINVAL; + + msg.addr = client->addr ^ IQS5XX_BL_ADDR_MASK; + msg.flags = 0; + msg.len = sizeof(mbuf); + msg.buf = mbuf; + + for (i = 0; i < pmap_len; i += IQS5XX_BL_BLK_LEN_MAX) { + put_unaligned_be16(bl_addr + i, mbuf); + memcpy(mbuf + sizeof(bl_addr), pmap_data + i, + sizeof(mbuf) - sizeof(bl_addr)); + + ret = i2c_transfer(client->adapter, &msg, 1); + if (ret != 1) + goto msg_fail; + + usleep_range(10000, 10100); + } + + return 0; + +msg_fail: + if (ret >= 0) + ret = -EIO; + + dev_err(&client->dev, "Failed to write block at address 0x%04X: %d\n", + bl_addr + i, ret); + + return ret; +} + +static int iqs5xx_bl_verify(struct i2c_client *client, + u16 bl_addr, u8 *pmap_data, u16 pmap_len) +{ + struct i2c_msg msg; + int ret, i; + u8 bl_data[IQS5XX_BL_BLK_LEN_MAX]; + + if (pmap_len % IQS5XX_BL_BLK_LEN_MAX) + return -EINVAL; + + msg.addr = client->addr ^ IQS5XX_BL_ADDR_MASK; + msg.flags = I2C_M_RD; + msg.len = sizeof(bl_data); + msg.buf = bl_data; + + for (i = 0; i < pmap_len; i += IQS5XX_BL_BLK_LEN_MAX) { + ret = iqs5xx_bl_cmd(client, IQS5XX_BL_CMD_READ, bl_addr + i); + if (ret) + return ret; + + ret = i2c_transfer(client->adapter, &msg, 1); + if (ret != 1) + goto msg_fail; + + if (memcmp(bl_data, pmap_data + i, sizeof(bl_data))) { + dev_err(&client->dev, + "Failed to verify block at address 0x%04X\n", + bl_addr + i); + return -EIO; + } + } + + return 0; + +msg_fail: + if (ret >= 0) + ret = -EIO; + + dev_err(&client->dev, "Failed to read block at address 0x%04X: %d\n", + bl_addr + i, ret); + + return ret; +} + +static int iqs5xx_set_state(struct i2c_client *client, u8 state) +{ + struct iqs5xx_private *iqs5xx = i2c_get_clientdata(client); + int error1, error2; + + if (iqs5xx->bl_status == IQS5XX_BL_STATUS_RESET) + return 0; + + mutex_lock(&iqs5xx->lock); + + /* + * Addressing the device outside of a communication window prompts it + * to assert the RDY output, so disable the interrupt line to prevent + * the handler from servicing a false interrupt. + */ + disable_irq(client->irq); + + error1 = iqs5xx_write_byte(client, IQS5XX_SYS_CTRL1, state); + error2 = iqs5xx_write_byte(client, IQS5XX_END_COMM, 0); + + usleep_range(50, 100); + enable_irq(client->irq); + + mutex_unlock(&iqs5xx->lock); + + if (error1) + return error1; + + return error2; +} + +static int iqs5xx_open(struct input_dev *input) +{ + struct iqs5xx_private *iqs5xx = input_get_drvdata(input); + + return iqs5xx_set_state(iqs5xx->client, IQS5XX_RESUME); +} + +static void iqs5xx_close(struct input_dev *input) +{ + struct iqs5xx_private *iqs5xx = input_get_drvdata(input); + + iqs5xx_set_state(iqs5xx->client, IQS5XX_SUSPEND); +} + +static int iqs5xx_axis_init(struct i2c_client *client) +{ + struct iqs5xx_private *iqs5xx = i2c_get_clientdata(client); + struct touchscreen_properties prop; + struct input_dev *input; + int error; + u16 max_x, max_x_hw; + u16 max_y, max_y_hw; + u8 val; + + if (!iqs5xx->input) { + input = devm_input_allocate_device(&client->dev); + if (!input) + return -ENOMEM; + + input->name = client->name; + input->id.bustype = BUS_I2C; + input->open = iqs5xx_open; + input->close = iqs5xx_close; + + input_set_capability(input, EV_ABS, ABS_MT_POSITION_X); + input_set_capability(input, EV_ABS, ABS_MT_POSITION_Y); + input_set_capability(input, EV_ABS, ABS_MT_PRESSURE); + + error = input_mt_init_slots(input, + IQS5XX_NUM_CONTACTS, INPUT_MT_DIRECT); + if (error) { + dev_err(&client->dev, + "Failed to initialize slots: %d\n", error); + return error; + } + + input_set_drvdata(input, iqs5xx); + iqs5xx->input = input; + } + + touchscreen_parse_properties(iqs5xx->input, true, &prop); + + error = iqs5xx_read_byte(client, IQS5XX_TOTAL_RX, &val); + if (error) + return error; + max_x_hw = (val - 1) * IQS5XX_NUM_POINTS; + + error = iqs5xx_read_byte(client, IQS5XX_TOTAL_TX, &val); + if (error) + return error; + max_y_hw = (val - 1) * IQS5XX_NUM_POINTS; + + error = iqs5xx_read_byte(client, IQS5XX_XY_CFG0, &val); + if (error) + return error; + + if (val & IQS5XX_SWITCH_XY_AXIS) + swap(max_x_hw, max_y_hw); + + if (prop.swap_x_y) + val ^= IQS5XX_SWITCH_XY_AXIS; + + if (prop.invert_x) + val ^= prop.swap_x_y ? IQS5XX_FLIP_Y : IQS5XX_FLIP_X; + + if (prop.invert_y) + val ^= prop.swap_x_y ? IQS5XX_FLIP_X : IQS5XX_FLIP_Y; + + error = iqs5xx_write_byte(client, IQS5XX_XY_CFG0, val); + if (error) + return error; + + if (prop.max_x > max_x_hw) { + dev_err(&client->dev, "Invalid maximum x-coordinate: %u > %u\n", + prop.max_x, max_x_hw); + return -EINVAL; + } else if (prop.max_x == 0) { + error = iqs5xx_read_word(client, IQS5XX_X_RES, &max_x); + if (error) + return error; + + input_abs_set_max(iqs5xx->input, + prop.swap_x_y ? ABS_MT_POSITION_Y : + ABS_MT_POSITION_X, + max_x); + } else { + max_x = (u16)prop.max_x; + } + + if (prop.max_y > max_y_hw) { + dev_err(&client->dev, "Invalid maximum y-coordinate: %u > %u\n", + prop.max_y, max_y_hw); + return -EINVAL; + } else if (prop.max_y == 0) { + error = iqs5xx_read_word(client, IQS5XX_Y_RES, &max_y); + if (error) + return error; + + input_abs_set_max(iqs5xx->input, + prop.swap_x_y ? ABS_MT_POSITION_X : + ABS_MT_POSITION_Y, + max_y); + } else { + max_y = (u16)prop.max_y; + } + + /* + * Write horizontal and vertical resolution to the device in case its + * original defaults were overridden or swapped as per the properties + * specified in the device tree. + */ + error = iqs5xx_write_word(client, + prop.swap_x_y ? IQS5XX_Y_RES : IQS5XX_X_RES, + max_x); + if (error) + return error; + + return iqs5xx_write_word(client, + prop.swap_x_y ? IQS5XX_X_RES : IQS5XX_Y_RES, + max_y); +} + +static int iqs5xx_dev_init(struct i2c_client *client) +{ + struct iqs5xx_private *iqs5xx = i2c_get_clientdata(client); + struct iqs5xx_dev_id_info *dev_id_info; + int error; + u8 val; + u8 buf[sizeof(*dev_id_info) + 1]; + + error = iqs5xx_read_burst(client, IQS5XX_PROD_NUM, + &buf[1], sizeof(*dev_id_info)); + if (error) + return iqs5xx_bl_open(client); + + /* + * A000 and B000 devices use 8-bit and 16-bit addressing, respectively. + * Querying an A000 device's version information with 16-bit addressing + * gives the appearance that the data is shifted by one byte; a nonzero + * leading array element suggests this could be the case (in which case + * the missing zero is prepended). + */ + buf[0] = 0; + dev_id_info = (struct iqs5xx_dev_id_info *)&buf[(buf[1] > 0) ? 0 : 1]; + + switch (be16_to_cpu(dev_id_info->prod_num)) { + case IQS5XX_PROD_NUM_IQS550: + case IQS5XX_PROD_NUM_IQS572: + case IQS5XX_PROD_NUM_IQS525: + break; + default: + dev_err(&client->dev, "Unrecognized product number: %u\n", + be16_to_cpu(dev_id_info->prod_num)); + return -EINVAL; + } + + switch (be16_to_cpu(dev_id_info->proj_num)) { + case IQS5XX_PROJ_NUM_A000: + dev_err(&client->dev, "Unsupported project number: %u\n", + be16_to_cpu(dev_id_info->proj_num)); + return iqs5xx_bl_open(client); + case IQS5XX_PROJ_NUM_B000: + break; + default: + dev_err(&client->dev, "Unrecognized project number: %u\n", + be16_to_cpu(dev_id_info->proj_num)); + return -EINVAL; + } + + if (dev_id_info->major_ver < IQS5XX_MAJOR_VER_MIN) { + dev_err(&client->dev, "Unsupported major version: %u\n", + dev_id_info->major_ver); + return iqs5xx_bl_open(client); + } + + switch (dev_id_info->bl_status) { + case IQS5XX_BL_STATUS_AVAIL: + case IQS5XX_BL_STATUS_NONE: + break; + default: + dev_err(&client->dev, + "Unrecognized bootloader status: 0x%02X\n", + dev_id_info->bl_status); + return -EINVAL; + } + + error = iqs5xx_axis_init(client); + if (error) + return error; + + error = iqs5xx_read_byte(client, IQS5XX_SYS_CFG0, &val); + if (error) + return error; + + val |= IQS5XX_SETUP_COMPLETE; + val &= ~IQS5XX_SW_INPUT_EVENT; + error = iqs5xx_write_byte(client, IQS5XX_SYS_CFG0, val); + if (error) + return error; + + val = IQS5XX_TP_EVENT | IQS5XX_EVENT_MODE; + error = iqs5xx_write_byte(client, IQS5XX_SYS_CFG1, val); + if (error) + return error; + + error = iqs5xx_write_byte(client, IQS5XX_END_COMM, 0); + if (error) + return error; + + iqs5xx->bl_status = dev_id_info->bl_status; + + /* + * Closure of the first communication window that appears following the + * release of reset appears to kick off an initialization period during + * which further communication is met with clock stretching. The return + * from this function is delayed so that further communication attempts + * avoid this period. + */ + msleep(100); + + return 0; +} + +static irqreturn_t iqs5xx_irq(int irq, void *data) +{ + struct iqs5xx_private *iqs5xx = data; + struct iqs5xx_touch_data touch_data[IQS5XX_NUM_CONTACTS]; + struct i2c_client *client = iqs5xx->client; + struct input_dev *input = iqs5xx->input; + int error, i; + + /* + * This check is purely a precaution, as the device does not assert the + * RDY output during bootloader mode. If the device operates outside of + * bootloader mode, the input device is guaranteed to be allocated. + */ + if (iqs5xx->bl_status == IQS5XX_BL_STATUS_RESET) + return IRQ_NONE; + + error = iqs5xx_read_burst(client, IQS5XX_ABS_X, + touch_data, sizeof(touch_data)); + if (error) + return IRQ_NONE; + + for (i = 0; i < ARRAY_SIZE(touch_data); i++) { + u16 pressure = be16_to_cpu(touch_data[i].strength); + + input_mt_slot(input, i); + if (input_mt_report_slot_state(input, MT_TOOL_FINGER, + pressure != 0)) { + input_report_abs(input, ABS_MT_POSITION_X, + be16_to_cpu(touch_data[i].abs_x)); + input_report_abs(input, ABS_MT_POSITION_Y, + be16_to_cpu(touch_data[i].abs_y)); + input_report_abs(input, ABS_MT_PRESSURE, pressure); + } + } + + input_mt_sync_frame(input); + input_sync(input); + + error = iqs5xx_write_byte(client, IQS5XX_END_COMM, 0); + if (error) + return IRQ_NONE; + + /* + * Once the communication window is closed, a small delay is added to + * ensure the device's RDY output has been deasserted by the time the + * interrupt handler returns. + */ + usleep_range(50, 100); + + return IRQ_HANDLED; +} + +static int iqs5xx_fw_file_parse(struct i2c_client *client, + const char *fw_file, u8 *pmap) +{ + const struct firmware *fw; + struct iqs5xx_ihex_rec *rec; + size_t pos = 0; + int error, i; + u16 rec_num = 1; + u16 rec_addr; + u8 rec_len, rec_type, rec_chksm, chksm; + u8 rec_hdr[IQS5XX_REC_HDR_LEN]; + u8 rec_data[IQS5XX_REC_LEN_MAX]; + + /* + * Firmware exported from the vendor's configuration tool deviates from + * standard ihex as follows: (1) the checksum for records corresponding + * to user-exported settings is not recalculated, and (2) an address of + * 0xFFFF is used for the EOF record. + * + * Because the ihex2fw tool tolerates neither (1) nor (2), the slightly + * nonstandard ihex firmware is parsed directly by the driver. + */ + error = request_firmware(&fw, fw_file, &client->dev); + if (error) { + dev_err(&client->dev, "Failed to request firmware %s: %d\n", + fw_file, error); + return error; + } + + do { + if (pos + sizeof(*rec) > fw->size) { + dev_err(&client->dev, "Insufficient firmware size\n"); + error = -EINVAL; + break; + } + rec = (struct iqs5xx_ihex_rec *)(fw->data + pos); + pos += sizeof(*rec); + + if (rec->start != ':') { + dev_err(&client->dev, "Invalid start at record %u\n", + rec_num); + error = -EINVAL; + break; + } + + error = hex2bin(rec_hdr, rec->len, sizeof(rec_hdr)); + if (error) { + dev_err(&client->dev, "Invalid header at record %u\n", + rec_num); + break; + } + + rec_len = *rec_hdr; + rec_addr = get_unaligned_be16(rec_hdr + sizeof(rec_len)); + rec_type = *(rec_hdr + sizeof(rec_len) + sizeof(rec_addr)); + + if (pos + rec_len * 2 > fw->size) { + dev_err(&client->dev, "Insufficient firmware size\n"); + error = -EINVAL; + break; + } + pos += (rec_len * 2); + + error = hex2bin(rec_data, rec->data, rec_len); + if (error) { + dev_err(&client->dev, "Invalid data at record %u\n", + rec_num); + break; + } + + error = hex2bin(&rec_chksm, + rec->data + rec_len * 2, sizeof(rec_chksm)); + if (error) { + dev_err(&client->dev, "Invalid checksum at record %u\n", + rec_num); + break; + } + + chksm = 0; + for (i = 0; i < sizeof(rec_hdr); i++) + chksm += rec_hdr[i]; + for (i = 0; i < rec_len; i++) + chksm += rec_data[i]; + chksm = ~chksm + 1; + + if (chksm != rec_chksm && rec_addr < IQS5XX_CSTM) { + dev_err(&client->dev, + "Incorrect checksum at record %u\n", + rec_num); + error = -EINVAL; + break; + } + + switch (rec_type) { + case IQS5XX_REC_TYPE_DATA: + if (rec_addr < IQS5XX_CHKSM || + rec_addr > IQS5XX_PMAP_END) { + dev_err(&client->dev, + "Invalid address at record %u\n", + rec_num); + error = -EINVAL; + } else { + memcpy(pmap + rec_addr - IQS5XX_CHKSM, + rec_data, rec_len); + } + break; + case IQS5XX_REC_TYPE_EOF: + break; + default: + dev_err(&client->dev, "Invalid type at record %u\n", + rec_num); + error = -EINVAL; + } + + if (error) + break; + + rec_num++; + while (pos < fw->size) { + if (*(fw->data + pos) == ':') + break; + pos++; + } + } while (rec_type != IQS5XX_REC_TYPE_EOF); + + release_firmware(fw); + + return error; +} + +static int iqs5xx_fw_file_write(struct i2c_client *client, const char *fw_file) +{ + struct iqs5xx_private *iqs5xx = i2c_get_clientdata(client); + int error; + u8 *pmap; + + if (iqs5xx->bl_status == IQS5XX_BL_STATUS_NONE) + return -EPERM; + + pmap = kzalloc(IQS5XX_PMAP_LEN, GFP_KERNEL); + if (!pmap) + return -ENOMEM; + + error = iqs5xx_fw_file_parse(client, fw_file, pmap); + if (error) + goto err_kfree; + + mutex_lock(&iqs5xx->lock); + + /* + * Disable the interrupt line in case the first attempt(s) to enter the + * bootloader don't happen quickly enough, in which case the device may + * assert the RDY output until the next attempt. + */ + disable_irq(client->irq); + + iqs5xx->bl_status = IQS5XX_BL_STATUS_RESET; + + error = iqs5xx_bl_cmd(client, IQS5XX_BL_CMD_VER, 0); + if (error) { + error = iqs5xx_bl_open(client); + if (error) + goto err_reset; + } + + error = iqs5xx_bl_write(client, IQS5XX_CHKSM, pmap, IQS5XX_PMAP_LEN); + if (error) + goto err_reset; + + error = iqs5xx_bl_cmd(client, IQS5XX_BL_CMD_CRC, 0); + if (error) + goto err_reset; + + error = iqs5xx_bl_verify(client, IQS5XX_CSTM, + pmap + IQS5XX_CHKSM_LEN + IQS5XX_APP_LEN, + IQS5XX_CSTM_LEN); + if (error) + goto err_reset; + + error = iqs5xx_bl_cmd(client, IQS5XX_BL_CMD_EXEC, 0); + +err_reset: + if (error) { + iqs5xx_reset(client); + usleep_range(10000, 10100); + } + + error = iqs5xx_dev_init(client); + if (!error && iqs5xx->bl_status == IQS5XX_BL_STATUS_RESET) + error = -EINVAL; + + enable_irq(client->irq); + + mutex_unlock(&iqs5xx->lock); + +err_kfree: + kfree(pmap); + + return error; +} + +static ssize_t fw_file_store(struct device *dev, struct device_attribute *attr, + const char *buf, size_t count) +{ + struct iqs5xx_private *iqs5xx = dev_get_drvdata(dev); + struct i2c_client *client = iqs5xx->client; + size_t len = count; + bool input_reg = !iqs5xx->input; + char fw_file[IQS5XX_FW_FILE_LEN + 1]; + int error; + + if (!len) + return -EINVAL; + + if (buf[len - 1] == '\n') + len--; + + if (len > IQS5XX_FW_FILE_LEN) + return -ENAMETOOLONG; + + memcpy(fw_file, buf, len); + fw_file[len] = '\0'; + + error = iqs5xx_fw_file_write(client, fw_file); + if (error) + return error; + + /* + * If the input device was not allocated already, it is guaranteed to + * be allocated by this point and can finally be registered. + */ + if (input_reg) { + error = input_register_device(iqs5xx->input); + if (error) { + dev_err(&client->dev, + "Failed to register device: %d\n", + error); + return error; + } + } + + return count; +} + +static DEVICE_ATTR_WO(fw_file); + +static struct attribute *iqs5xx_attrs[] = { + &dev_attr_fw_file.attr, + NULL, +}; + +static const struct attribute_group iqs5xx_attr_group = { + .attrs = iqs5xx_attrs, +}; + +static int __maybe_unused iqs5xx_suspend(struct device *dev) +{ + struct iqs5xx_private *iqs5xx = dev_get_drvdata(dev); + struct input_dev *input = iqs5xx->input; + int error = 0; + + if (!input) + return error; + + mutex_lock(&input->mutex); + + if (input->users) + error = iqs5xx_set_state(iqs5xx->client, IQS5XX_SUSPEND); + + mutex_unlock(&input->mutex); + + return error; +} + +static int __maybe_unused iqs5xx_resume(struct device *dev) +{ + struct iqs5xx_private *iqs5xx = dev_get_drvdata(dev); + struct input_dev *input = iqs5xx->input; + int error = 0; + + if (!input) + return error; + + mutex_lock(&input->mutex); + + if (input->users) + error = iqs5xx_set_state(iqs5xx->client, IQS5XX_RESUME); + + mutex_unlock(&input->mutex); + + return error; +} + +static SIMPLE_DEV_PM_OPS(iqs5xx_pm, iqs5xx_suspend, iqs5xx_resume); + +static int iqs5xx_probe(struct i2c_client *client, + const struct i2c_device_id *id) +{ + struct iqs5xx_private *iqs5xx; + int error; + + iqs5xx = devm_kzalloc(&client->dev, sizeof(*iqs5xx), GFP_KERNEL); + if (!iqs5xx) + return -ENOMEM; + + dev_set_drvdata(&client->dev, iqs5xx); + + i2c_set_clientdata(client, iqs5xx); + iqs5xx->client = client; + + iqs5xx->reset_gpio = devm_gpiod_get(&client->dev, + "reset", GPIOD_OUT_LOW); + if (IS_ERR(iqs5xx->reset_gpio)) { + error = PTR_ERR(iqs5xx->reset_gpio); + dev_err(&client->dev, "Failed to request GPIO: %d\n", error); + return error; + } + + mutex_init(&iqs5xx->lock); + + iqs5xx_reset(client); + usleep_range(10000, 10100); + + error = iqs5xx_dev_init(client); + if (error) + return error; + + error = devm_request_threaded_irq(&client->dev, client->irq, + NULL, iqs5xx_irq, IRQF_ONESHOT, + client->name, iqs5xx); + if (error) { + dev_err(&client->dev, "Failed to request IRQ: %d\n", error); + return error; + } + + error = devm_device_add_group(&client->dev, &iqs5xx_attr_group); + if (error) { + dev_err(&client->dev, "Failed to add attributes: %d\n", error); + return error; + } + + if (iqs5xx->input) { + error = input_register_device(iqs5xx->input); + if (error) + dev_err(&client->dev, + "Failed to register device: %d\n", + error); + } + + return error; +} + +static const struct i2c_device_id iqs5xx_id[] = { + { "iqs550", 0 }, + { "iqs572", 1 }, + { "iqs525", 2 }, + { } +}; +MODULE_DEVICE_TABLE(i2c, iqs5xx_id); + +static const struct of_device_id iqs5xx_of_match[] = { + { .compatible = "azoteq,iqs550" }, + { .compatible = "azoteq,iqs572" }, + { .compatible = "azoteq,iqs525" }, + { } +}; +MODULE_DEVICE_TABLE(of, iqs5xx_of_match); + +static struct i2c_driver iqs5xx_i2c_driver = { + .driver = { + .name = "iqs5xx", + .of_match_table = iqs5xx_of_match, + .pm = &iqs5xx_pm, + }, + .id_table = iqs5xx_id, + .probe = iqs5xx_probe, +}; +module_i2c_driver(iqs5xx_i2c_driver); + +MODULE_AUTHOR("Jeff LaBundy <[email protected]>"); +MODULE_DESCRIPTION("Azoteq IQS550/572/525 Trackpad/Touchscreen Controller"); +MODULE_LICENSE("GPL"); diff --git a/drivers/input/touchscreen/lpc32xx_ts.c b/drivers/input/touchscreen/lpc32xx_ts.c index 4eb31ec10b18..567ed64b5392 100644 --- a/drivers/input/touchscreen/lpc32xx_ts.c +++ b/drivers/input/touchscreen/lpc32xx_ts.c @@ -1,17 +1,8 @@ +// SPDX-License-Identifier: GPL-2.0-or-later /* * LPC32xx built-in touchscreen driver * * Copyright (C) 2010 NXP Semiconductors - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. */ #include <linux/platform_device.h> diff --git a/drivers/input/touchscreen/mainstone-wm97xx.c b/drivers/input/touchscreen/mainstone-wm97xx.c index 0786010d7ed0..f8564b398eb3 100644 --- a/drivers/input/touchscreen/mainstone-wm97xx.c +++ b/drivers/input/touchscreen/mainstone-wm97xx.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0-or-later /* * mainstone-wm97xx.c -- Mainstone Continuous Touch screen driver for * Wolfson WM97xx AC97 Codecs. @@ -7,11 +8,6 @@ * Parts Copyright : Ian Molton <[email protected]> * Andrew Zabolotny <[email protected]> * - * This program is free software; you can redistribute it and/or modify it - * under the terms of the GNU General Public License as published by the - * Free Software Foundation; either version 2 of the License, or (at your - * option) any later version. - * * Notes: * This is a wm97xx extended touch driver to capture touch * data in a continuous manner on the Intel XScale architecture @@ -19,7 +15,6 @@ * Features: * - codecs supported:- WM9705, WM9712, WM9713 * - processors supported:- Intel XScale PXA25x, PXA26x, PXA27x - * */ #include <linux/module.h> diff --git a/drivers/input/touchscreen/max11801_ts.c b/drivers/input/touchscreen/max11801_ts.c index 72ca3efb5781..1af08d3dfaf7 100644 --- a/drivers/input/touchscreen/max11801_ts.c +++ b/drivers/input/touchscreen/max11801_ts.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0-or-later /* * Driver for MAXI MAX11801 - A Resistive touch screen controller with * i2c interface @@ -6,11 +7,6 @@ * Author: Zhang Jiejing <[email protected]> * * Based on mcs5000_ts.c - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. */ /* diff --git a/drivers/input/touchscreen/mcs5000_ts.c b/drivers/input/touchscreen/mcs5000_ts.c index 8868573133ab..5376d8f740ab 100644 --- a/drivers/input/touchscreen/mcs5000_ts.c +++ b/drivers/input/touchscreen/mcs5000_ts.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0-or-later /* * mcs5000_ts.c - Touchscreen driver for MELFAS MCS-5000 controller * @@ -5,12 +6,6 @@ * Author: Joonyoung Shim <[email protected]> * * Based on wm97xx-core.c - * - * This program is free software; you can redistribute it and/or modify it - * under the terms of the GNU General Public License as published by the - * Free Software Foundation; either version 2 of the License, or (at your - * option) any later version. - * */ #include <linux/module.h> diff --git a/drivers/input/touchscreen/melfas_mip4.c b/drivers/input/touchscreen/melfas_mip4.c index 430a2bc5f7ca..247c3aaba2d8 100644 --- a/drivers/input/touchscreen/melfas_mip4.c +++ b/drivers/input/touchscreen/melfas_mip4.c @@ -1,19 +1,10 @@ +// SPDX-License-Identifier: GPL-2.0-or-later /* * MELFAS MIP4 Touchscreen * * Copyright (C) 2016 MELFAS Inc. * * Author : Sangwon Jee <[email protected]> - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License - * as published by the Free Software Foundation; either version 2 - * of the License, or (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. */ #include <linux/acpi.h> diff --git a/drivers/input/touchscreen/mxs-lradc-ts.c b/drivers/input/touchscreen/mxs-lradc-ts.c index c850b517854e..593b8d3e90b5 100644 --- a/drivers/input/touchscreen/mxs-lradc-ts.c +++ b/drivers/input/touchscreen/mxs-lradc-ts.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0-or-later /* * Freescale MXS LRADC touchscreen driver * @@ -7,16 +8,6 @@ * Authors: * Marek Vasut <[email protected]> * Ksenija Stanojevic <[email protected]> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. */ #include <linux/device.h> diff --git a/drivers/input/touchscreen/s3c2410_ts.c b/drivers/input/touchscreen/s3c2410_ts.c index 1173890f6719..b346e7cafd62 100644 --- a/drivers/input/touchscreen/s3c2410_ts.c +++ b/drivers/input/touchscreen/s3c2410_ts.c @@ -1,20 +1,7 @@ +// SPDX-License-Identifier: GPL-2.0-or-later /* * Samsung S3C24XX touchscreen driver * - * This program is free software; you can redistribute it and/or modify - * it under the term of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA - * * Copyright 2004 Arnaud Patard <[email protected]> * Copyright 2008 Ben Dooks <[email protected]> * Copyright 2009 Simtec Electronics <[email protected]> diff --git a/drivers/input/touchscreen/silead.c b/drivers/input/touchscreen/silead.c index 09241d4cdebc..a67d5e93fb77 100644 --- a/drivers/input/touchscreen/silead.c +++ b/drivers/input/touchscreen/silead.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0-or-later /* ------------------------------------------------------------------------- * Copyright (C) 2014-2015, Intel Corporation * @@ -5,15 +6,6 @@ * gslX68X.c * Copyright (C) 2010-2015, Shanghai Sileadinc Co.Ltd * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. * ------------------------------------------------------------------------- */ diff --git a/drivers/input/touchscreen/stmpe-ts.c b/drivers/input/touchscreen/stmpe-ts.c index cf9c9aa39f6e..7e16fcfe3b95 100644 --- a/drivers/input/touchscreen/stmpe-ts.c +++ b/drivers/input/touchscreen/stmpe-ts.c @@ -1,14 +1,9 @@ +// SPDX-License-Identifier: GPL-2.0-or-later /* * STMicroelectronics STMPE811 Touchscreen Driver * * (C) 2010 Luotao Fu <[email protected]> * All rights reserved. - * - * This program is free software; you can redistribute it and/or modify it - * under the terms of the GNU General Public License as published by the - * Free Software Foundation; either version 2 of the License, or (at your - * option) any later version. - * */ #include <linux/kernel.h> diff --git a/drivers/input/touchscreen/sun4i-ts.c b/drivers/input/touchscreen/sun4i-ts.c index d2e14d9e5975..92f6e1ae23a2 100644 --- a/drivers/input/touchscreen/sun4i-ts.c +++ b/drivers/input/touchscreen/sun4i-ts.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0-or-later /* * Allwinner sunxi resistive touchscreen controller driver * @@ -5,16 +6,6 @@ * * The hwmon parts are based on work by Corentin LABBE which is: * Copyright (C) 2013 Corentin LABBE <[email protected]> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. */ /* diff --git a/drivers/input/touchscreen/sur40.c b/drivers/input/touchscreen/sur40.c index 894843a7ec7b..8c8ac4dff0d5 100644 --- a/drivers/input/touchscreen/sur40.c +++ b/drivers/input/touchscreen/sur40.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0-or-later /* * Surface2.0/SUR40/PixelSense input driver * @@ -14,11 +15,6 @@ * * and from the v4l2-pci-skeleton driver, * Copyright (c) Copyright 2014 Cisco Systems, Inc. - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License as - * published by the Free Software Foundation; either version 2 of - * the License, or (at your option) any later version. */ #include <linux/kernel.h> diff --git a/drivers/input/touchscreen/tsc2004.c b/drivers/input/touchscreen/tsc2004.c index 6fe55d598fac..0272cedcc726 100644 --- a/drivers/input/touchscreen/tsc2004.c +++ b/drivers/input/touchscreen/tsc2004.c @@ -1,18 +1,9 @@ +// SPDX-License-Identifier: GPL-2.0-or-later /* * TSC2004 touchscreen driver * * Copyright (C) 2015 QWERTY Embedded Design * Copyright (C) 2015 EMAC Inc. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. */ #include <linux/module.h> diff --git a/drivers/input/touchscreen/tsc2005.c b/drivers/input/touchscreen/tsc2005.c index e02b69f40ad8..923496bbb368 100644 --- a/drivers/input/touchscreen/tsc2005.c +++ b/drivers/input/touchscreen/tsc2005.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0-or-later /* * TSC2005 touchscreen driver * @@ -6,16 +7,6 @@ * Copyright (C) 2015 EMAC Inc. * * Based on original tsc2005.c by Lauri Leukkunen <[email protected]> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. */ #include <linux/input.h> diff --git a/drivers/input/touchscreen/tsc200x-core.c b/drivers/input/touchscreen/tsc200x-core.c index 62973ac01381..ce2fe30d6b8a 100644 --- a/drivers/input/touchscreen/tsc200x-core.c +++ b/drivers/input/touchscreen/tsc200x-core.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0-or-later /* * TSC2004/TSC2005 touchscreen driver core * @@ -7,16 +8,6 @@ * * Author: Lauri Leukkunen <[email protected]> * based on TSC2301 driver by Klaus K. Pedersen <[email protected]> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. */ #include <linux/kernel.h> diff --git a/drivers/input/touchscreen/usbtouchscreen.c b/drivers/input/touchscreen/usbtouchscreen.c index d61570d64ee7..a2cec6cacf57 100644 --- a/drivers/input/touchscreen/usbtouchscreen.c +++ b/drivers/input/touchscreen/usbtouchscreen.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0-or-later /****************************************************************************** * usbtouchscreen.c * Driver for USB Touchscreens, supporting those devices: @@ -22,20 +23,6 @@ * Copyright (C) 2004-2007 by Daniel Ritz <[email protected]> * Copyright (C) by Todd E. Johnson (mtouchusb.c) * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License as - * published by the Free Software Foundation; either version 2 of the - * License, or (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. - * * Driver is based on touchkitusb.c * - ITM parts are from itmtouch.c * - 3M parts are from mtouchusb.c diff --git a/drivers/input/touchscreen/wacom_i2c.c b/drivers/input/touchscreen/wacom_i2c.c index 8d7a2852caef..f017af8c2aa3 100644 --- a/drivers/input/touchscreen/wacom_i2c.c +++ b/drivers/input/touchscreen/wacom_i2c.c @@ -1,14 +1,9 @@ +// SPDX-License-Identifier: GPL-2.0-or-later /* * Wacom Penabled Driver for I2C * * Copyright (c) 2011 - 2013 Tatsunosuke Tobita, Wacom. - * - * This program is free software; you can redistribute it - * and/or modify it under the terms of the GNU General - * Public License as published by the Free Software - * Foundation; either version of 2 of the License, - * or (at your option) any later version. */ #include <linux/module.h> diff --git a/drivers/input/touchscreen/wm831x-ts.c b/drivers/input/touchscreen/wm831x-ts.c index 1db0a1410929..607d1aeb595d 100644 --- a/drivers/input/touchscreen/wm831x-ts.c +++ b/drivers/input/touchscreen/wm831x-ts.c @@ -1,13 +1,9 @@ +// SPDX-License-Identifier: GPL-2.0-or-later /* * Touchscreen driver for WM831x PMICs * * Copyright 2011 Wolfson Microelectronics plc. * Author: Mark Brown <[email protected]> - * - * This program is free software; you can redistribute it and/or modify it - * under the terms of the GNU General Public License as published by the - * Free Software Foundation; either version 2 of the License, or (at your - * option) any later version. */ #include <linux/module.h> diff --git a/drivers/input/touchscreen/wm9705.c b/drivers/input/touchscreen/wm9705.c index adc13a523ab5..4b55d5e1ea0f 100644 --- a/drivers/input/touchscreen/wm9705.c +++ b/drivers/input/touchscreen/wm9705.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0-or-later /* * wm9705.c -- Codec driver for Wolfson WM9705 AC97 Codec. * @@ -6,12 +7,6 @@ * Parts Copyright : Ian Molton <[email protected]> * Andrew Zabolotny <[email protected]> * Russell King <[email protected]> - * - * This program is free software; you can redistribute it and/or modify it - * under the terms of the GNU General Public License as published by the - * Free Software Foundation; either version 2 of the License, or (at your - * option) any later version. - * */ #include <linux/module.h> diff --git a/drivers/input/touchscreen/wm9712.c b/drivers/input/touchscreen/wm9712.c index 705ffa1e064a..6947714dfefa 100644 --- a/drivers/input/touchscreen/wm9712.c +++ b/drivers/input/touchscreen/wm9712.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0-or-later /* * wm9712.c -- Codec driver for Wolfson WM9712 AC97 Codecs. * @@ -6,12 +7,6 @@ * Parts Copyright : Ian Molton <[email protected]> * Andrew Zabolotny <[email protected]> * Russell King <[email protected]> - * - * This program is free software; you can redistribute it and/or modify it - * under the terms of the GNU General Public License as published by the - * Free Software Foundation; either version 2 of the License, or (at your - * option) any later version. - * */ #include <linux/module.h> diff --git a/drivers/input/touchscreen/wm9713.c b/drivers/input/touchscreen/wm9713.c index 572a5a64face..a67fbe304f92 100644 --- a/drivers/input/touchscreen/wm9713.c +++ b/drivers/input/touchscreen/wm9713.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0-or-later /* * wm9713.c -- Codec touch driver for Wolfson WM9713 AC97 Codec. * @@ -6,12 +7,6 @@ * Parts Copyright : Ian Molton <[email protected]> * Andrew Zabolotny <[email protected]> * Russell King <[email protected]> - * - * This program is free software; you can redistribute it and/or modify it - * under the terms of the GNU General Public License as published by the - * Free Software Foundation; either version 2 of the License, or (at your - * option) any later version. - * */ #include <linux/module.h> diff --git a/drivers/input/touchscreen/wm97xx-core.c b/drivers/input/touchscreen/wm97xx-core.c index 73856c2a8ac0..0a174bd82915 100644 --- a/drivers/input/touchscreen/wm97xx-core.c +++ b/drivers/input/touchscreen/wm97xx-core.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0-or-later /* * wm97xx-core.c -- Touch screen driver core for Wolfson WM9705, WM9712 * and WM9713 AC97 Codecs. @@ -8,11 +9,6 @@ * Andrew Zabolotny <[email protected]> * Russell King <[email protected]> * - * This program is free software; you can redistribute it and/or modify it - * under the terms of the GNU General Public License as published by the - * Free Software Foundation; either version 2 of the License, or (at your - * option) any later version. - * * Notes: * * Features: @@ -31,7 +27,6 @@ * - codec event notification * Todo * - Support for async sampling control for noisy LCDs. - * */ #include <linux/module.h> diff --git a/drivers/input/touchscreen/zet6223.c b/drivers/input/touchscreen/zet6223.c index 19ffcc7b886c..3b6f7ee1e38f 100644 --- a/drivers/input/touchscreen/zet6223.c +++ b/drivers/input/touchscreen/zet6223.c @@ -1,15 +1,6 @@ +// SPDX-License-Identifier: GPL-2.0-or-later /* * Copyright (C) 2016, Jelle van der Waa <[email protected]> - * - * This program is free software; you can redistribute it and/or modify it - * under the terms of the GNU General Public License as published by the Free - * Software Foundation; either version 2 of the License, or (at your option) - * any later version. - * - * This program is distributed in the hope that it will be useful, but WITHOUT - * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or - * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for - * more details. */ #include <linux/delay.h> diff --git a/drivers/input/touchscreen/zylonite-wm97xx.c b/drivers/input/touchscreen/zylonite-wm97xx.c index e2ccd683de6e..0f4ac7f844ce 100644 --- a/drivers/input/touchscreen/zylonite-wm97xx.c +++ b/drivers/input/touchscreen/zylonite-wm97xx.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0-or-later /* * zylonite-wm97xx.c -- Zylonite Continuous Touch screen driver * @@ -6,11 +7,6 @@ * Parts Copyright : Ian Molton <[email protected]> * Andrew Zabolotny <[email protected]> * - * This program is free software; you can redistribute it and/or modify it - * under the terms of the GNU General Public License as published by the - * Free Software Foundation; either version 2 of the License, or (at your - * option) any later version. - * * Notes: * This is a wm97xx extended touch driver supporting interrupt driven * and continuous operation on Marvell Zylonite development systems |