// SPDX-License-Identifier: GPL-2.0-only // Copyright (C) 2014 Broadcom Corporation #include <linux/bitops.h> #include <linux/clk.h> #include <linux/gfp.h> #include <linux/io.h> #include <linux/input.h> #include <linux/input/matrix_keypad.h> #include <linux/interrupt.h> #include <linux/module.h> #include <linux/of.h> #include <linux/platform_device.h> #include <linux/stddef.h> #include <linux/types.h> #define DEFAULT_CLK_HZ … #define MAX_ROWS … #define MAX_COLS … /* Register/field definitions */ #define KPCR_OFFSET … #define KPCR_MODE … #define KPCR_MODE_SHIFT … #define KPCR_MODE_MASK … #define KPCR_ENABLE … #define KPCR_STATUSFILTERENABLE … #define KPCR_STATUSFILTERTYPE_SHIFT … #define KPCR_COLFILTERENABLE … #define KPCR_COLFILTERTYPE_SHIFT … #define KPCR_ROWWIDTH_SHIFT … #define KPCR_COLUMNWIDTH_SHIFT … #define KPIOR_OFFSET … #define KPIOR_ROWOCONTRL_SHIFT … #define KPIOR_ROWOCONTRL_MASK … #define KPIOR_COLUMNOCONTRL_SHIFT … #define KPIOR_COLUMNOCONTRL_MASK … #define KPIOR_COLUMN_IO_DATA_SHIFT … #define KPEMR0_OFFSET … #define KPEMR1_OFFSET … #define KPEMR2_OFFSET … #define KPEMR3_OFFSET … #define KPEMR_EDGETYPE_BOTH … #define KPSSR0_OFFSET … #define KPSSR1_OFFSET … #define KPSSRN_OFFSET(reg_n) … #define KPIMR0_OFFSET … #define KPIMR1_OFFSET … #define KPICR0_OFFSET … #define KPICR1_OFFSET … #define KPICRN_OFFSET(reg_n) … #define KPISR0_OFFSET … #define KPISR1_OFFSET … #define KPCR_STATUSFILTERTYPE_MAX … #define KPCR_COLFILTERTYPE_MAX … /* Macros to determine the row/column from a bit that is set in SSR0/1. */ #define BIT_TO_ROW_SSRN(bit_nr, reg_n) … #define BIT_TO_COL(bit_nr) … /* Structure representing various run-time entities */ struct bcm_kp { … }; /* * Returns the keycode from the input device keymap given the row and * column. */ static int bcm_kp_get_keycode(struct bcm_kp *kp, int row, int col) { … } static void bcm_kp_report_keys(struct bcm_kp *kp, int reg_num, int pull_mode) { … } static irqreturn_t bcm_kp_isr_thread(int irq, void *dev_id) { … } static int bcm_kp_start(struct bcm_kp *kp) { … } static void bcm_kp_stop(const struct bcm_kp *kp) { … } static int bcm_kp_open(struct input_dev *dev) { … } static void bcm_kp_close(struct input_dev *dev) { … } static int bcm_kp_matrix_key_parse_dt(struct bcm_kp *kp) { … } static int bcm_kp_probe(struct platform_device *pdev) { … } static const struct of_device_id bcm_kp_of_match[] = …; MODULE_DEVICE_TABLE(of, bcm_kp_of_match); static struct platform_driver bcm_kp_device_driver = …; module_platform_driver(…) …; MODULE_AUTHOR(…) …; MODULE_DESCRIPTION(…) …; MODULE_LICENSE(…) …;
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