// SPDX-License-Identifier: GPL-2.0-only /* * linux/drivers/input/keyboard/pxa27x_keypad.c * * Driver for the pxa27x matrix keyboard controller. * * Created: Feb 22, 2007 * Author: Rodolfo Giometti <[email protected]> * * Based on a previous implementations by Kevin O'Connor * <kevin_at_koconnor.net> and Alex Osborne <[email protected]> and * on some suggestions by Nicolas Pitre <[email protected]>. */ #include <linux/kernel.h> #include <linux/module.h> #include <linux/interrupt.h> #include <linux/input.h> #include <linux/io.h> #include <linux/device.h> #include <linux/platform_device.h> #include <linux/clk.h> #include <linux/err.h> #include <linux/input/matrix_keypad.h> #include <linux/slab.h> #include <linux/of.h> #include <linux/platform_data/keypad-pxa27x.h> /* * Keypad Controller registers */ #define KPC … #define KPDK … #define KPREC … #define KPMK … #define KPAS … /* Keypad Automatic Scan Multiple Key Presser register 0-3 */ #define KPASMKP0 … #define KPASMKP1 … #define KPASMKP2 … #define KPASMKP3 … #define KPKDI … /* bit definitions */ #define KPC_MKRN(n) … #define KPC_MKCN(n) … #define KPC_DKN(n) … #define KPC_AS … #define KPC_ASACT … #define KPC_MI … #define KPC_IMKP … #define KPC_MS(n) … #define KPC_MS_ALL … #define KPC_ME … #define KPC_MIE … #define KPC_DK_DEB_SEL … #define KPC_DI … #define KPC_RE_ZERO_DEB … #define KPC_REE1 … #define KPC_REE0 … #define KPC_DE … #define KPC_DIE … #define KPDK_DKP … #define KPDK_DK(n) … #define KPREC_OF1 … #define kPREC_UF1 … #define KPREC_OF0 … #define KPREC_UF0 … #define KPREC_RECOUNT0(n) … #define KPREC_RECOUNT1(n) … #define KPMK_MKP … #define KPAS_SO … #define KPASMKPx_SO … #define KPAS_MUKP(n) … #define KPAS_RP(n) … #define KPAS_CP(n) … #define KPASMKP_MKC_MASK … #define keypad_readl(off) … #define keypad_writel(off, v) … #define MAX_MATRIX_KEY_NUM … #define MAX_KEYPAD_KEYS … struct pxa27x_keypad { … }; #ifdef CONFIG_OF static int pxa27x_keypad_matrix_key_parse_dt(struct pxa27x_keypad *keypad, struct pxa27x_keypad_platform_data *pdata) { … } static int pxa27x_keypad_direct_key_parse_dt(struct pxa27x_keypad *keypad, struct pxa27x_keypad_platform_data *pdata) { … } static int pxa27x_keypad_rotary_parse_dt(struct pxa27x_keypad *keypad, struct pxa27x_keypad_platform_data *pdata) { … } static int pxa27x_keypad_build_keycode_from_dt(struct pxa27x_keypad *keypad) { … } #else static int pxa27x_keypad_build_keycode_from_dt(struct pxa27x_keypad *keypad) { dev_info(keypad->input_dev->dev.parent, "missing platform data\n"); return -EINVAL; } #endif static int pxa27x_keypad_build_keycode(struct pxa27x_keypad *keypad) { … } static void pxa27x_keypad_scan_matrix(struct pxa27x_keypad *keypad) { … } #define DEFAULT_KPREC … static inline int rotary_delta(uint32_t kprec) { … } static void report_rotary_event(struct pxa27x_keypad *keypad, int r, int delta) { … } static void pxa27x_keypad_scan_rotary(struct pxa27x_keypad *keypad) { … } static void pxa27x_keypad_scan_direct(struct pxa27x_keypad *keypad) { … } static void clear_wakeup_event(struct pxa27x_keypad *keypad) { … } static irqreturn_t pxa27x_keypad_irq_handler(int irq, void *dev_id) { … } static void pxa27x_keypad_config(struct pxa27x_keypad *keypad) { … } static int pxa27x_keypad_open(struct input_dev *dev) { … } static void pxa27x_keypad_close(struct input_dev *dev) { … } static int pxa27x_keypad_suspend(struct device *dev) { … } static int pxa27x_keypad_resume(struct device *dev) { … } static DEFINE_SIMPLE_DEV_PM_OPS(pxa27x_keypad_pm_ops, pxa27x_keypad_suspend, pxa27x_keypad_resume); static int pxa27x_keypad_probe(struct platform_device *pdev) { … } #ifdef CONFIG_OF static const struct of_device_id pxa27x_keypad_dt_match[] = …; MODULE_DEVICE_TABLE(of, pxa27x_keypad_dt_match); #endif static struct platform_driver pxa27x_keypad_driver = …; module_platform_driver(…) …; MODULE_DESCRIPTION(…) …; MODULE_LICENSE(…) …; /* work with hotplug and coldplug */ MODULE_ALIAS(…) …;
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