// SPDX-License-Identifier: GPL-2.0-only /* * Copyright (C) ST-Ericsson SA 2010 * * Author: Naveen Kumar G <[email protected]> for ST-Ericsson * Author: Sundar Iyer <[email protected]> for ST-Ericsson * * Keypad controller driver for the SKE (Scroll Key Encoder) module used in * the Nomadik 8815 and Ux500 platforms. */ #include <linux/platform_device.h> #include <linux/interrupt.h> #include <linux/spinlock.h> #include <linux/io.h> #include <linux/delay.h> #include <linux/input.h> #include <linux/slab.h> #include <linux/clk.h> #include <linux/module.h> #include <linux/platform_data/keypad-nomadik-ske.h> /* SKE_CR bits */ #define SKE_KPMLT … #define SKE_KPCN … #define SKE_KPASEN … #define SKE_KPASON … /* SKE_IMSC bits */ #define SKE_KPIMA … /* SKE_ICR bits */ #define SKE_KPICS … #define SKE_KPICA … /* SKE_RIS bits */ #define SKE_KPRISA … #define SKE_KEYPAD_ROW_SHIFT … #define SKE_KPD_NUM_ROWS … #define SKE_KPD_NUM_COLS … /* keypad auto scan registers */ #define SKE_ASR0 … #define SKE_ASR1 … #define SKE_ASR2 … #define SKE_ASR3 … #define SKE_NUM_ASRX_REGISTERS … #define KEY_PRESSED_DELAY … /** * struct ske_keypad - data structure used by keypad driver * @irq: irq no * @reg_base: ske registers base address * @input: pointer to input device object * @board: keypad platform device * @keymap: matrix scan code table for keycodes * @clk: clock structure pointer * @pclk: clock structure pointer * @ske_keypad_lock: spinlock protecting the keypad read/writes */ struct ske_keypad { … }; static void ske_keypad_set_bits(struct ske_keypad *keypad, u16 addr, u8 mask, u8 data) { … } /* * ske_keypad_chip_init: init keypad controller configuration * * Enable Multi key press detection, auto scan mode */ static int __init ske_keypad_chip_init(struct ske_keypad *keypad) { … } static void ske_keypad_report(struct ske_keypad *keypad, u8 status, int col) { … } static void ske_keypad_read_data(struct ske_keypad *keypad) { … } static irqreturn_t ske_keypad_irq(int irq, void *dev_id) { … } static void ske_keypad_board_exit(void *data) { … } static int __init ske_keypad_probe(struct platform_device *pdev) { … } static int ske_keypad_suspend(struct device *dev) { … } static int ske_keypad_resume(struct device *dev) { … } static DEFINE_SIMPLE_DEV_PM_OPS(ske_keypad_dev_pm_ops, ske_keypad_suspend, ske_keypad_resume); static struct platform_driver ske_keypad_driver = …; module_platform_driver_probe(…); MODULE_LICENSE(…) …; MODULE_AUTHOR(…) …; MODULE_DESCRIPTION(…) …; MODULE_ALIAS(…) …;
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