// SPDX-License-Identifier: GPL-2.0 /* * HT16K33 driver * * Author: Robin van der Gracht <[email protected]> * * Copyright: (C) 2016 Protonic Holland. * Copyright (C) 2021 Glider bv */ #include <linux/kernel.h> #include <linux/module.h> #include <linux/interrupt.h> #include <linux/i2c.h> #include <linux/property.h> #include <linux/fb.h> #include <linux/backlight.h> #include <linux/container_of.h> #include <linux/input.h> #include <linux/input/matrix_keypad.h> #include <linux/leds.h> #include <linux/workqueue.h> #include <linux/mm.h> #include <linux/map_to_7segment.h> #include <linux/map_to_14segment.h> #include <asm/unaligned.h> #include "line-display.h" /* Registers */ #define REG_SYSTEM_SETUP … #define REG_SYSTEM_SETUP_OSC_ON … #define REG_DISPLAY_SETUP … #define REG_DISPLAY_SETUP_ON … #define REG_DISPLAY_SETUP_BLINK_OFF … #define REG_DISPLAY_SETUP_BLINK_2HZ … #define REG_DISPLAY_SETUP_BLINK_1HZ … #define REG_DISPLAY_SETUP_BLINK_0HZ5 … #define REG_ROWINT_SET … #define REG_ROWINT_SET_INT_EN … #define REG_ROWINT_SET_INT_ACT_HIGH … #define REG_BRIGHTNESS … /* Defines */ #define DRIVER_NAME … #define MIN_BRIGHTNESS … #define MAX_BRIGHTNESS … #define HT16K33_MATRIX_LED_MAX_COLS … #define HT16K33_MATRIX_LED_MAX_ROWS … #define HT16K33_MATRIX_KEYPAD_MAX_COLS … #define HT16K33_MATRIX_KEYPAD_MAX_ROWS … #define BYTES_PER_ROW … #define HT16K33_FB_SIZE … enum display_type { … }; struct ht16k33_keypad { … }; struct ht16k33_fbdev { … }; struct ht16k33_priv { … }; #define ht16k33_work_to_priv(p) … #define ht16k33_led_to_priv(p) … #define ht16k33_linedisp_to_priv(p) … static const struct fb_fix_screeninfo ht16k33_fb_fix = …; static const struct fb_var_screeninfo ht16k33_fb_var = …; static int ht16k33_display_on(struct ht16k33_priv *priv) { … } static int ht16k33_display_off(struct ht16k33_priv *priv) { … } static int ht16k33_brightness_set(struct ht16k33_priv *priv, unsigned int brightness) { … } static int ht16k33_brightness_set_blocking(struct led_classdev *led_cdev, enum led_brightness brightness) { … } static int ht16k33_blink_set(struct led_classdev *led_cdev, unsigned long *delay_on, unsigned long *delay_off) { … } static void ht16k33_fb_queue(struct ht16k33_priv *priv) { … } /* * This gets the fb data from cache and copies it to ht16k33 display RAM */ static void ht16k33_fb_update(struct work_struct *work) { … } static int ht16k33_initialize(struct ht16k33_priv *priv) { … } static int ht16k33_bl_update_status(struct backlight_device *bl) { … } static const struct backlight_ops ht16k33_bl_ops = …; /* * Blank events will be passed to the actual device handling the backlight when * we return zero here. */ static int ht16k33_blank(int blank, struct fb_info *info) { … } static int ht16k33_mmap(struct fb_info *info, struct vm_area_struct *vma) { … } static const struct fb_ops ht16k33_fb_ops = …; /* * This gets the keys from keypad and reports it to input subsystem. * Returns true if a key is pressed. */ static bool ht16k33_keypad_scan(struct ht16k33_keypad *keypad) { … } static irqreturn_t ht16k33_keypad_irq_thread(int irq, void *dev) { … } static int ht16k33_keypad_start(struct input_dev *dev) { … } static void ht16k33_keypad_stop(struct input_dev *dev) { … } static void ht16k33_seg7_update(struct work_struct *work) { … } static void ht16k33_seg14_update(struct work_struct *work) { … } static int ht16k33_linedisp_get_map_type(struct linedisp *linedisp) { … } static void ht16k33_linedisp_update(struct linedisp *linedisp) { … } static const struct linedisp_ops ht16k33_linedisp_ops = …; static int ht16k33_led_probe(struct device *dev, struct led_classdev *led, unsigned int brightness) { … } static int ht16k33_keypad_probe(struct i2c_client *client, struct ht16k33_keypad *keypad) { … } static int ht16k33_fbdev_probe(struct device *dev, struct ht16k33_priv *priv, uint32_t brightness) { … } static int ht16k33_seg_probe(struct device *dev, struct ht16k33_priv *priv, uint32_t brightness) { … } static int ht16k33_probe(struct i2c_client *client) { … } static void ht16k33_remove(struct i2c_client *client) { … } static const struct i2c_device_id ht16k33_i2c_match[] = …; MODULE_DEVICE_TABLE(i2c, ht16k33_i2c_match); static const struct of_device_id ht16k33_of_match[] = …; MODULE_DEVICE_TABLE(of, ht16k33_of_match); static struct i2c_driver ht16k33_driver = …; module_i2c_driver(…) …; MODULE_DESCRIPTION(…) …; MODULE_LICENSE(…) …; MODULE_IMPORT_NS(…); MODULE_AUTHOR(…) …;
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