// SPDX-License-Identifier: GPL-2.0-or-later /* * NXP LPC32xx SoC Key Scan Interface * * Authors: * Kevin Wells <[email protected]> * Roland Stigge <[email protected]> * * Copyright (C) 2010 NXP Semiconductors * Copyright (C) 2012 Roland Stigge * * This controller supports square key matrices from 1x1 up to 8x8 */ #include <linux/module.h> #include <linux/interrupt.h> #include <linux/slab.h> #include <linux/irq.h> #include <linux/pm.h> #include <linux/platform_device.h> #include <linux/input.h> #include <linux/clk.h> #include <linux/io.h> #include <linux/of.h> #include <linux/input/matrix_keypad.h> #define DRV_NAME … /* * Key scanner register offsets */ #define LPC32XX_KS_DEB(x) … #define LPC32XX_KS_STATE_COND(x) … #define LPC32XX_KS_IRQ(x) … #define LPC32XX_KS_SCAN_CTL(x) … #define LPC32XX_KS_FAST_TST(x) … #define LPC32XX_KS_MATRIX_DIM(x) … #define LPC32XX_KS_DATA(x, y) … #define LPC32XX_KSCAN_DEB_NUM_DEB_PASS(n) … #define LPC32XX_KSCAN_SCOND_IN_IDLE … #define LPC32XX_KSCAN_SCOND_IN_SCANONCE … #define LPC32XX_KSCAN_SCOND_IN_IRQGEN … #define LPC32XX_KSCAN_SCOND_IN_SCAN_MATRIX … #define LPC32XX_KSCAN_IRQ_PENDING_CLR … #define LPC32XX_KSCAN_SCTRL_SCAN_DELAY(n) … #define LPC32XX_KSCAN_FTST_FORCESCANONCE … #define LPC32XX_KSCAN_FTST_USE32K_CLK … #define LPC32XX_KSCAN_MSEL_SELECT(n) … struct lpc32xx_kscan_drv { … }; static void lpc32xx_mod_states(struct lpc32xx_kscan_drv *kscandat, int col) { … } static irqreturn_t lpc32xx_kscan_irq(int irq, void *dev_id) { … } static int lpc32xx_kscan_open(struct input_dev *dev) { … } static void lpc32xx_kscan_close(struct input_dev *dev) { … } static int lpc32xx_parse_dt(struct device *dev, struct lpc32xx_kscan_drv *kscandat) { … } static int lpc32xx_kscan_probe(struct platform_device *pdev) { … } static int lpc32xx_kscan_suspend(struct device *dev) { … } static int lpc32xx_kscan_resume(struct device *dev) { … } static DEFINE_SIMPLE_DEV_PM_OPS(lpc32xx_kscan_pm_ops, lpc32xx_kscan_suspend, lpc32xx_kscan_resume); static const struct of_device_id lpc32xx_kscan_match[] = …; MODULE_DEVICE_TABLE(of, lpc32xx_kscan_match); static struct platform_driver lpc32xx_kscan_driver = …; module_platform_driver(…) …; MODULE_LICENSE(…) …; MODULE_AUTHOR(…) …; MODULE_AUTHOR(…) …; MODULE_DESCRIPTION(…) …;
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