cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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ssd130x.h (1933B)

      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
     21#define SSD130X_DATA				0x40
     22#define SSD130X_COMMAND				0x80
     23
     24enum ssd130x_variants {
     25	SH1106_ID,
     26	SSD1305_ID,
     27	SSD1306_ID,
     28	SSD1307_ID,
     29	SSD1309_ID,
     30	NR_SSD130X_VARIANTS
     31};
     32
     33struct ssd130x_deviceinfo {
     34	u32 default_vcomh;
     35	u32 default_dclk_div;
     36	u32 default_dclk_frq;
     37	int need_pwm;
     38	int need_chargepump;
     39	bool page_mode_only;
     40};
     41
     42struct ssd130x_device {
     43	struct drm_device drm;
     44	struct device *dev;
     45	struct drm_simple_display_pipe pipe;
     46	struct drm_display_mode mode;
     47	struct drm_connector connector;
     48	struct i2c_client *client;
     49
     50	struct regmap *regmap;
     51
     52	const struct ssd130x_deviceinfo *device_info;
     53
     54	unsigned page_address_mode : 1;
     55	unsigned area_color_enable : 1;
     56	unsigned com_invdir : 1;
     57	unsigned com_lrremap : 1;
     58	unsigned com_seq : 1;
     59	unsigned lookup_table_set : 1;
     60	unsigned low_power : 1;
     61	unsigned seg_remap : 1;
     62	u32 com_offset;
     63	u32 contrast;
     64	u32 dclk_div;
     65	u32 dclk_frq;
     66	u32 height;
     67	u8 lookup_table[4];
     68	u32 page_offset;
     69	u32 col_offset;
     70	u32 prechargep1;
     71	u32 prechargep2;
     72
     73	struct backlight_device *bl_dev;
     74	struct pwm_device *pwm;
     75	struct gpio_desc *reset;
     76	struct regulator *vcc_reg;
     77	u32 vcomh;
     78	u32 width;
     79	/* Cached address ranges */
     80	u8 col_start;
     81	u8 col_end;
     82	u8 page_start;
     83	u8 page_end;
     84};
     85
     86extern const struct ssd130x_deviceinfo ssd130x_variants[];
     87
     88struct ssd130x_device *ssd130x_probe(struct device *dev, struct regmap *regmap);
     89void ssd130x_remove(struct ssd130x_device *ssd130x);
     90void ssd130x_shutdown(struct ssd130x_device *ssd130x);
     91
     92#endif /* __SSD1307X_H__ */