// SPDX-License-Identifier: GPL-2.0-only /* * Copyright (C) ST-Ericsson SA 2010 * * Author: Rabin Vincent <[email protected]> for ST-Ericsson */ #include <linux/module.h> #include <linux/slab.h> #include <linux/input.h> #include <linux/interrupt.h> #include <linux/of.h> #include <linux/platform_device.h> #include <linux/input/matrix_keypad.h> #include <linux/mfd/stmpe.h> /* These are at the same addresses in all STMPE variants */ #define STMPE_KPC_COL … #define STMPE_KPC_ROW_MSB … #define STMPE_KPC_ROW_LSB … #define STMPE_KPC_CTRL_MSB … #define STMPE_KPC_CTRL_LSB … #define STMPE_KPC_COMBI_KEY_0 … #define STMPE_KPC_COMBI_KEY_1 … #define STMPE_KPC_COMBI_KEY_2 … #define STMPE_KPC_DATA_BYTE0 … #define STMPE_KPC_DATA_BYTE1 … #define STMPE_KPC_DATA_BYTE2 … #define STMPE_KPC_DATA_BYTE3 … #define STMPE_KPC_DATA_BYTE4 … #define STMPE_KPC_CTRL_LSB_SCAN … #define STMPE_KPC_CTRL_LSB_DEBOUNCE … #define STMPE_KPC_CTRL_MSB_SCAN_COUNT … #define STMPE_KPC_ROW_MSB_ROWS … #define STMPE_KPC_DATA_UP … #define STMPE_KPC_DATA_ROW … #define STMPE_KPC_DATA_COL … #define STMPE_KPC_DATA_NOKEY_MASK … #define STMPE_KEYPAD_MAX_DEBOUNCE … #define STMPE_KEYPAD_MAX_SCAN_COUNT … #define STMPE_KEYPAD_MAX_ROWS … #define STMPE_KEYPAD_MAX_COLS … #define STMPE_KEYPAD_ROW_SHIFT … #define STMPE_KEYPAD_KEYMAP_MAX_SIZE … #define STMPE1601_NUM_DATA … #define STMPE2401_NUM_DATA … #define STMPE2403_NUM_DATA … /* Make sure it covers all cases above */ #define MAX_NUM_DATA … /** * struct stmpe_keypad_variant - model-specific attributes * @auto_increment: whether the KPC_DATA_BYTE register address * auto-increments on multiple read * @set_pullup: whether the pins need to have their pull-ups set * @num_data: number of data bytes * @num_normal_data: number of normal keys' data bytes * @max_cols: maximum number of columns supported * @max_rows: maximum number of rows supported * @col_gpios: bitmask of gpios which can be used for columns * @row_gpios: bitmask of gpios which can be used for rows */ struct stmpe_keypad_variant { … }; static const struct stmpe_keypad_variant stmpe_keypad_variants[] = …; /** * struct stmpe_keypad - STMPE keypad state container * @stmpe: pointer to parent STMPE device * @input: spawned input device * @variant: STMPE variant * @debounce_ms: debounce interval, in ms. Maximum is * %STMPE_KEYPAD_MAX_DEBOUNCE. * @scan_count: number of key scanning cycles to confirm key data. * Maximum is %STMPE_KEYPAD_MAX_SCAN_COUNT. * @no_autorepeat: disable key autorepeat * @rows: bitmask for the rows * @cols: bitmask for the columns * @keymap: the keymap */ struct stmpe_keypad { … }; static int stmpe_keypad_read_data(struct stmpe_keypad *keypad, u8 *data) { … } static irqreturn_t stmpe_keypad_irq(int irq, void *dev) { … } static int stmpe_keypad_altfunc_init(struct stmpe_keypad *keypad) { … } static int stmpe_keypad_chip_init(struct stmpe_keypad *keypad) { … } static void stmpe_keypad_fill_used_pins(struct stmpe_keypad *keypad, u32 used_rows, u32 used_cols) { … } static int stmpe_keypad_probe(struct platform_device *pdev) { … } static void stmpe_keypad_remove(struct platform_device *pdev) { … } static struct platform_driver stmpe_keypad_driver = …; module_platform_driver(…) …; MODULE_LICENSE(…) …; MODULE_DESCRIPTION(…) …; MODULE_AUTHOR(…) …;
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