// SPDX-License-Identifier: GPL-2.0-only /* * Driver for the Cirrus EP93xx matrix keypad controller. * * Copyright (c) 2008 H Hartley Sweeten <[email protected]> * * Based on the pxa27x matrix keypad controller by Rodolfo Giometti. * * NOTE: * * The 3-key reset is triggered by pressing the 3 keys in * Row 0, Columns 2, 4, and 7 at the same time. This action can * be disabled by setting the EP93XX_KEYPAD_DISABLE_3_KEY flag. * * Normal operation for the matrix does not autorepeat the key press. * This action can be enabled by setting the EP93XX_KEYPAD_AUTOREPEAT * flag. */ #include <linux/bits.h> #include <linux/module.h> #include <linux/platform_device.h> #include <linux/interrupt.h> #include <linux/clk.h> #include <linux/io.h> #include <linux/input.h> #include <linux/input/matrix_keypad.h> #include <linux/slab.h> #include <linux/soc/cirrus/ep93xx.h> #include <linux/platform_data/keypad-ep93xx.h> #include <linux/pm_wakeirq.h> /* * Keypad Interface Register offsets */ #define KEY_INIT … #define KEY_DIAG … #define KEY_REG … /* Key Scan Initialization Register bit defines */ #define KEY_INIT_DBNC_MASK … #define KEY_INIT_DBNC_SHIFT … #define KEY_INIT_DIS3KY … #define KEY_INIT_DIAG … #define KEY_INIT_BACK … #define KEY_INIT_T2 … #define KEY_INIT_PRSCL_MASK … #define KEY_INIT_PRSCL_SHIFT … /* Key Scan Diagnostic Register bit defines */ #define KEY_DIAG_MASK … #define KEY_DIAG_SHIFT … /* Key Value Capture Register bit defines */ #define KEY_REG_K … #define KEY_REG_INT … #define KEY_REG_2KEYS … #define KEY_REG_1KEY … #define KEY_REG_KEY2_MASK … #define KEY_REG_KEY2_SHIFT … #define KEY_REG_KEY1_MASK … #define KEY_REG_KEY1_SHIFT … #define EP93XX_MATRIX_SIZE … struct ep93xx_keypad { … }; static irqreturn_t ep93xx_keypad_irq_handler(int irq, void *dev_id) { … } static void ep93xx_keypad_config(struct ep93xx_keypad *keypad) { … } static int ep93xx_keypad_open(struct input_dev *pdev) { … } static void ep93xx_keypad_close(struct input_dev *pdev) { … } static int ep93xx_keypad_suspend(struct device *dev) { … } static int ep93xx_keypad_resume(struct device *dev) { … } static DEFINE_SIMPLE_DEV_PM_OPS(ep93xx_keypad_pm_ops, ep93xx_keypad_suspend, ep93xx_keypad_resume); static void ep93xx_keypad_release_gpio_action(void *_pdev) { … } static int ep93xx_keypad_probe(struct platform_device *pdev) { … } static void ep93xx_keypad_remove(struct platform_device *pdev) { … } static struct platform_driver ep93xx_keypad_driver = …; module_platform_driver(…) …; MODULE_LICENSE(…) …; MODULE_AUTHOR(…) …; MODULE_DESCRIPTION(…) …; MODULE_ALIAS(…) …;
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