| /* |
| * Copyright (c) 2016 Google, Inc |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License version 2 or later as |
| * published by the Free Software Foundation. |
| */ |
| |
| #ifndef SEVEN_SEG_DISP_H |
| #define SEVEN_SEG_DISP_H |
| |
| #include <linux/device.h> |
| #include <linux/cdev.h> |
| |
| #define MAX_DISP_CHAR_SIZE 3 |
| |
| #define DEFAULT_REFRESH_INTERVAL_MS 600 |
| |
| struct seven_seg_disp_dev { |
| bool disp_data_valid; |
| u16 current_seven_seg_disp_data; |
| char seven_seg_disp_data_array[MAX_DISP_CHAR_SIZE]; |
| struct device parent; |
| struct device *dev; |
| struct cdev cdev; |
| void (*update_seven_seg_data)(struct device *, u16 data); |
| }; |
| |
| int seven_seg_setup_cdev(struct seven_seg_disp_dev *disp_dev, |
| void (*update_disp_data)(struct device *, u16 data)); |
| |
| void seven_seg_rem_cdev(struct seven_seg_disp_dev *disp_dev); |
| |
| #endif |
