// SPDX-License-Identifier: GPL-2.0-only /* * Copyright (C) ST-Ericsson SA 2010 * * Author: Jayeeta Banerjee <[email protected]> * Author: Sundar Iyer <[email protected]> * * TC35893 MFD Keypad Controller driver */ #include <linux/module.h> #include <linux/interrupt.h> #include <linux/input.h> #include <linux/platform_device.h> #include <linux/input/matrix_keypad.h> #include <linux/i2c.h> #include <linux/slab.h> #include <linux/mfd/tc3589x.h> #include <linux/device.h> /* Maximum supported keypad matrix row/columns size */ #define TC3589x_MAX_KPROW … #define TC3589x_MAX_KPCOL … /* keypad related Constants */ #define TC3589x_MAX_DEBOUNCE_SETTLE … #define DEDICATED_KEY_VAL … /* Pull up/down masks */ #define TC3589x_NO_PULL_MASK … #define TC3589x_PULL_DOWN_MASK … #define TC3589x_PULL_UP_MASK … #define TC3589x_PULLUP_ALL_MASK … #define TC3589x_IO_PULL_VAL(index, mask) … /* Bit masks for IOCFG register */ #define IOCFG_BALLCFG … #define IOCFG_IG … #define KP_EVCODE_COL_MASK … #define KP_EVCODE_ROW_MASK … #define KP_RELEASE_EVT_MASK … #define KP_ROW_SHIFT … #define KP_NO_VALID_KEY_MASK … /* bit masks for RESTCTRL register */ #define TC3589x_KBDRST … #define TC3589x_IRQRST … #define TC3589x_RESET_ALL … /* KBDMFS register bit mask */ #define TC3589x_KBDMFS_EN … /* CLKEN register bitmask */ #define KPD_CLK_EN … /* RSTINTCLR register bit mask */ #define IRQ_CLEAR … /* bit masks for keyboard interrupts*/ #define TC3589x_EVT_LOSS_INT … #define TC3589x_EVT_INT … #define TC3589x_KBD_LOSS_INT … #define TC3589x_KBD_INT … /* bit masks for keyboard interrupt clear*/ #define TC3589x_EVT_INT_CLR … #define TC3589x_KBD_INT_CLR … /** * struct tc3589x_keypad_platform_data - platform specific keypad data * @keymap_data: matrix scan code table for keycodes * @krow: mask for available rows, value is 0xFF * @kcol: mask for available columns, value is 0xFF * @debounce_period: platform specific debounce time * @settle_time: platform specific settle down time * @irqtype: type of interrupt, falling or rising edge * @enable_wakeup: specifies if keypad event can wake up system from sleep * @no_autorepeat: flag for auto repetition */ struct tc3589x_keypad_platform_data { … }; /** * struct tc_keypad - data structure used by keypad driver * @tc3589x: pointer to tc35893 * @input: pointer to input device object * @board: keypad platform device * @krow: number of rows * @kcol: number of columns * @keymap: matrix scan code table for keycodes * @keypad_stopped: holds keypad status */ struct tc_keypad { … }; static int tc3589x_keypad_init_key_hardware(struct tc_keypad *keypad) { … } #define TC35893_DATA_REGS … #define TC35893_KEYCODE_FIFO_EMPTY … #define TC35893_KEYCODE_FIFO_CLEAR … #define TC35893_KEYPAD_ROW_SHIFT … static irqreturn_t tc3589x_keypad_irq(int irq, void *dev) { … } static int tc3589x_keypad_enable(struct tc_keypad *keypad) { … } static int tc3589x_keypad_disable(struct tc_keypad *keypad) { … } static int tc3589x_keypad_open(struct input_dev *input) { … } static void tc3589x_keypad_close(struct input_dev *input) { … } static const struct tc3589x_keypad_platform_data * tc3589x_keypad_of_probe(struct device *dev) { … } static int tc3589x_keypad_probe(struct platform_device *pdev) { … } static int tc3589x_keypad_suspend(struct device *dev) { … } static int tc3589x_keypad_resume(struct device *dev) { … } static DEFINE_SIMPLE_DEV_PM_OPS(tc3589x_keypad_dev_pm_ops, tc3589x_keypad_suspend, tc3589x_keypad_resume); static struct platform_driver tc3589x_keypad_driver = …; module_platform_driver(…) …; MODULE_LICENSE(…) …; MODULE_AUTHOR(…) …; MODULE_DESCRIPTION(…) …; MODULE_ALIAS(…) …;
Codebase Browser
linux