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Linux kernel mirror (for testing)
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1/* SPDX-License-Identifier: GPL-2.0-only */
2/*
3 * Header file for:
4 * DRM driver for Solomon SSD130x OLED displays
5 *
6 * Copyright 2022 Red Hat Inc.
7 * Author: Javier Martinez Canillas <javierm@redhat.com>
8 *
9 * Based on drivers/video/fbdev/ssd1307fb.c
10 * Copyright 2012 Free Electrons
11 */
12
13#ifndef __SSD1307X_H__
14#define __SSD1307X_H__
15
16#include <drm/drm_drv.h>
17#include <drm/drm_simple_kms_helper.h>
18
19#include <linux/regmap.h>
20
21struct ssd130x_deviceinfo {
22 u32 default_vcomh;
23 u32 default_dclk_div;
24 u32 default_dclk_frq;
25 int need_pwm;
26 int need_chargepump;
27};
28
29struct ssd130x_device {
30 struct drm_device drm;
31 struct device *dev;
32 struct drm_simple_display_pipe pipe;
33 struct drm_display_mode mode;
34 struct drm_connector connector;
35 struct i2c_client *client;
36
37 struct regmap *regmap;
38
39 const struct ssd130x_deviceinfo *device_info;
40
41 unsigned area_color_enable : 1;
42 unsigned com_invdir : 1;
43 unsigned com_lrremap : 1;
44 unsigned com_seq : 1;
45 unsigned lookup_table_set : 1;
46 unsigned low_power : 1;
47 unsigned seg_remap : 1;
48 u32 com_offset;
49 u32 contrast;
50 u32 dclk_div;
51 u32 dclk_frq;
52 u32 height;
53 u8 lookup_table[4];
54 u32 page_offset;
55 u32 col_offset;
56 u32 prechargep1;
57 u32 prechargep2;
58
59 struct backlight_device *bl_dev;
60 struct pwm_device *pwm;
61 struct gpio_desc *reset;
62 struct regulator *vcc_reg;
63 u32 vcomh;
64 u32 width;
65 /* Cached address ranges */
66 u8 col_start;
67 u8 col_end;
68 u8 page_start;
69 u8 page_end;
70};
71
72struct ssd130x_device *ssd130x_probe(struct device *dev, struct regmap *regmap);
73int ssd130x_remove(struct ssd130x_device *ssd130x);
74void ssd130x_shutdown(struct ssd130x_device *ssd130x);
75
76#endif /* __SSD1307X_H__ */