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 __SSD130X_H__ 14 #define __SSD130X_H__ 15 16 #include <drm/drm_connector.h> 17 #include <drm/drm_crtc.h> 18 #include <drm/drm_drv.h> 19 #include <drm/drm_encoder.h> 20 21 #include <linux/regmap.h> 22 23 #define SSD13XX_DATA 0x40 24 #define SSD13XX_COMMAND 0x80 25 26 enum ssd130x_family_ids { 27 SSD130X_FAMILY, 28 SSD132X_FAMILY 29 }; 30 31 enum ssd130x_variants { 32 /* ssd130x family */ 33 SH1106_ID, 34 SSD1305_ID, 35 SSD1306_ID, 36 SSD1307_ID, 37 SSD1309_ID, 38 /* ssd132x family */ 39 SSD1322_ID, 40 SSD1325_ID, 41 SSD1327_ID, 42 NR_SSD130X_VARIANTS 43 }; 44 45 struct ssd130x_deviceinfo { 46 u32 default_vcomh; 47 u32 default_dclk_div; 48 u32 default_dclk_frq; 49 u32 default_width; 50 u32 default_height; 51 bool need_pwm; 52 bool need_chargepump; 53 bool page_mode_only; 54 55 enum ssd130x_family_ids family_id; 56 }; 57 58 struct ssd130x_device { 59 struct drm_device drm; 60 struct device *dev; 61 struct drm_display_mode mode; 62 struct drm_plane primary_plane; 63 struct drm_crtc crtc; 64 struct drm_encoder encoder; 65 struct drm_connector connector; 66 struct i2c_client *client; 67 68 struct regmap *regmap; 69 70 const struct ssd130x_deviceinfo *device_info; 71 72 unsigned page_address_mode : 1; 73 unsigned area_color_enable : 1; 74 unsigned com_invdir : 1; 75 unsigned com_lrremap : 1; 76 unsigned com_seq : 1; 77 unsigned lookup_table_set : 1; 78 unsigned low_power : 1; 79 unsigned seg_remap : 1; 80 u32 com_offset; 81 u32 contrast; 82 u32 dclk_div; 83 u32 dclk_frq; 84 u32 height; 85 u8 lookup_table[4]; 86 u32 page_offset; 87 u32 col_offset; 88 u32 prechargep1; 89 u32 prechargep2; 90 91 struct backlight_device *bl_dev; 92 struct pwm_device *pwm; 93 struct gpio_desc *reset; 94 struct regulator *vcc_reg; 95 u32 vcomh; 96 u32 width; 97 /* Cached address ranges */ 98 u8 col_start; 99 u8 col_end; 100 u8 page_start; 101 u8 page_end; 102 }; 103 104 extern const struct ssd130x_deviceinfo ssd130x_variants[]; 105 106 struct ssd130x_device *ssd130x_probe(struct device *dev, struct regmap *regmap); 107 void ssd130x_remove(struct ssd130x_device *ssd130x); 108 void ssd130x_shutdown(struct ssd130x_device *ssd130x); 109 110 #endif /* __SSD130X_H__ */ 111