// SPDX-License-Identifier: GPL-2.0-or-later /* * AD7879/AD7889 based touchscreen and GPIO driver * * Copyright (C) 2008-2010 Michael Hennerich, Analog Devices Inc. * * History: * Copyright (c) 2005 David Brownell * Copyright (c) 2006 Nokia Corporation * Various changes: Imre Deak <[email protected]> * * Using code from: * - corgi_ts.c * Copyright (C) 2004-2005 Richard Purdie * - omap_ts.[hc], ads7846.h, ts_osk.c * Copyright (C) 2002 MontaVista Software * Copyright (C) 2004 Texas Instruments * Copyright (C) 2005 Dirk Behme * - ad7877.c * Copyright (C) 2006-2008 Analog Devices Inc. */ #include <linux/device.h> #include <linux/delay.h> #include <linux/input.h> #include <linux/interrupt.h> #include <linux/irq.h> #include <linux/property.h> #include <linux/regmap.h> #include <linux/slab.h> #include <linux/gpio/driver.h> #include <linux/input/touchscreen.h> #include <linux/module.h> #include "ad7879.h" #define AD7879_REG_ZEROS … #define AD7879_REG_CTRL1 … #define AD7879_REG_CTRL2 … #define AD7879_REG_CTRL3 … #define AD7879_REG_AUX1HIGH … #define AD7879_REG_AUX1LOW … #define AD7879_REG_TEMP1HIGH … #define AD7879_REG_TEMP1LOW … #define AD7879_REG_XPLUS … #define AD7879_REG_YPLUS … #define AD7879_REG_Z1 … #define AD7879_REG_Z2 … #define AD7879_REG_AUXVBAT … #define AD7879_REG_TEMP … #define AD7879_REG_REVID … /* Control REG 1 */ #define AD7879_TMR(x) … #define AD7879_ACQ(x) … #define AD7879_MODE_NOC … #define AD7879_MODE_SCC … #define AD7879_MODE_SEQ0 … #define AD7879_MODE_SEQ1 … #define AD7879_MODE_INT … /* Control REG 2 */ #define AD7879_FCD(x) … #define AD7879_RESET … #define AD7879_MFS(x) … #define AD7879_AVG(x) … #define AD7879_SER … #define AD7879_DFR … #define AD7879_GPIOPOL … #define AD7879_GPIODIR … #define AD7879_GPIO_DATA … #define AD7879_GPIO_EN … #define AD7879_PM(x) … #define AD7879_PM_SHUTDOWN … #define AD7879_PM_DYN … #define AD7879_PM_FULLON … /* Control REG 3 */ #define AD7879_TEMPMASK_BIT … #define AD7879_AUXVBATMASK_BIT … #define AD7879_INTMODE_BIT … #define AD7879_GPIOALERTMASK_BIT … #define AD7879_AUXLOW_BIT … #define AD7879_AUXHIGH_BIT … #define AD7879_TEMPLOW_BIT … #define AD7879_TEMPHIGH_BIT … #define AD7879_YPLUS_BIT … #define AD7879_XPLUS_BIT … #define AD7879_Z1_BIT … #define AD7879_Z2_BIT … #define AD7879_AUX_BIT … #define AD7879_VBAT_BIT … #define AD7879_TEMP_BIT … enum { … }; #define MAX_12BIT … #define TS_PEN_UP_TIMEOUT … struct ad7879 { … }; static int ad7879_read(struct ad7879 *ts, u8 reg) { … } static int ad7879_write(struct ad7879 *ts, u8 reg, u16 val) { … } static int ad7879_report(struct ad7879 *ts) { … } static void ad7879_ts_event_release(struct ad7879 *ts) { … } static void ad7879_timer(struct timer_list *t) { … } static irqreturn_t ad7879_irq(int irq, void *handle) { … } static void __ad7879_enable(struct ad7879 *ts) { … } static void __ad7879_disable(struct ad7879 *ts) { … } static int ad7879_open(struct input_dev *input) { … } static void ad7879_close(struct input_dev *input) { … } static int __maybe_unused ad7879_suspend(struct device *dev) { … } static int __maybe_unused ad7879_resume(struct device *dev) { … } SIMPLE_DEV_PM_OPS(ad7879_pm_ops, ad7879_suspend, ad7879_resume); EXPORT_SYMBOL(…); static void ad7879_toggle(struct ad7879 *ts, bool disable) { … } static ssize_t ad7879_disable_show(struct device *dev, struct device_attribute *attr, char *buf) { … } static ssize_t ad7879_disable_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { … } static DEVICE_ATTR(disable, 0664, ad7879_disable_show, ad7879_disable_store); static struct attribute *ad7879_attributes[] = …; static const struct attribute_group ad7879_attr_group = …; const struct attribute_group *ad7879_groups[] = …; EXPORT_SYMBOL_GPL(…); #ifdef CONFIG_GPIOLIB static int ad7879_gpio_direction_input(struct gpio_chip *chip, unsigned gpio) { … } static int ad7879_gpio_direction_output(struct gpio_chip *chip, unsigned gpio, int level) { … } static int ad7879_gpio_get_value(struct gpio_chip *chip, unsigned gpio) { … } static void ad7879_gpio_set_value(struct gpio_chip *chip, unsigned gpio, int value) { … } static int ad7879_gpio_add(struct ad7879 *ts) { … } #else static int ad7879_gpio_add(struct ad7879 *ts) { return 0; } #endif static int ad7879_parse_dt(struct device *dev, struct ad7879 *ts) { … } int ad7879_probe(struct device *dev, struct regmap *regmap, int irq, u16 bustype, u8 devid) { … } EXPORT_SYMBOL(…); MODULE_AUTHOR(…) …; MODULE_DESCRIPTION(…) …; MODULE_LICENSE(…) …;
Codebase Browser
linux