/* SPDX-License-Identifier: GPL-2.0-only */ /* * Header file for: * DRM driver for Solomon SSD130x OLED displays * * Copyright 2022 Red Hat Inc. * Author: Javier Martinez Canillas <javierm@redhat.com> * * Based on drivers/video/fbdev/ssd1307fb.c * Copyright 2012 Free Electrons */ #ifndef __SSD1307X_H__ #define __SSD1307X_H__ #include <drm/drm_connector.h> #include <drm/drm_crtc.h> #include <drm/drm_drv.h> #include <drm/drm_encoder.h> #include <drm/drm_plane_helper.h> #include <linux/regmap.h> #define SSD130X_DATA 0x40 #define SSD130X_COMMAND 0x80 enum ssd130x_variants { SH1106_ID, SSD1305_ID, SSD1306_ID, SSD1307_ID, SSD1309_ID, NR_SSD130X_VARIANTS }; struct ssd130x_deviceinfo { u32 default_vcomh; u32 default_dclk_div; u32 default_dclk_frq; int need_pwm; int need_chargepump; bool page_mode_only; }; struct ssd130x_device { struct drm_device drm; struct device *dev; struct drm_display_mode mode; struct drm_plane primary_plane; struct drm_crtc crtc; struct drm_encoder encoder; struct drm_connector connector; struct i2c_client *client; struct regmap *regmap; const struct ssd130x_deviceinfo *device_info; unsigned page_address_mode : 1; unsigned area_color_enable : 1; unsigned com_invdir : 1; unsigned com_lrremap : 1; unsigned com_seq : 1; unsigned lookup_table_set : 1; unsigned low_power : 1; unsigned seg_remap : 1; u32 com_offset; u32 contrast; u32 dclk_div; u32 dclk_frq; u32 height; u8 lookup_table[4]; u32 page_offset; u32 col_offset; u32 prechargep1; u32 prechargep2; struct backlight_device *bl_dev; struct pwm_device *pwm; struct gpio_desc *reset; struct regulator *vcc_reg; u32 vcomh; u32 width; /* Cached address ranges */ u8 col_start; u8 col_end; u8 page_start; u8 page_end; }; extern const struct ssd130x_deviceinfo ssd130x_variants[]; struct ssd130x_device *ssd130x_probe(struct device *dev, struct regmap *regmap); void ssd130x_remove(struct ssd130x_device *ssd130x); void ssd130x_shutdown(struct ssd130x_device *ssd130x); #endif /* __SSD1307X_H__ */