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The Solomon SSD132x controllers (such as the SSD1322, SSD1325 and SSD1327) are used by 16 grayscale dot matrix OLED panels, extend the driver to also support this chip family. Instead adding an indirection level to allow the same modesetting pipeline to be used by both controller families, add another pipeline for SSD132x. This leads to some code duplication but it makes the driver easier to read and reason about. Once other controller families are added (e.g: SSD133x), some common code can be factored out in driver helpers to be shared by the different families. But that can be done later once these patterns emerge. Signed-off-by: Javier Martinez Canillas <javierm@redhat.com> Acked-by: Thomas Zimmermann <tzimmermann@suse.de> Link: https://patchwork.freedesktop.org/patch/msgid/20231014071520.1342189-5-javierm@redhat.com
111 lines
2.2 KiB
C
111 lines
2.2 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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* Header file for:
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* DRM driver for Solomon SSD130x OLED displays
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*
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* Copyright 2022 Red Hat Inc.
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* Author: Javier Martinez Canillas <javierm@redhat.com>
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*
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* Based on drivers/video/fbdev/ssd1307fb.c
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* Copyright 2012 Free Electrons
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*/
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#ifndef __SSD130X_H__
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#define __SSD130X_H__
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#include <drm/drm_connector.h>
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#include <drm/drm_crtc.h>
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#include <drm/drm_drv.h>
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#include <drm/drm_encoder.h>
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#include <drm/drm_plane_helper.h>
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#include <linux/regmap.h>
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#define SSD13XX_DATA 0x40
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#define SSD13XX_COMMAND 0x80
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enum ssd130x_family_ids {
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SSD130X_FAMILY,
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SSD132X_FAMILY
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};
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enum ssd130x_variants {
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/* ssd130x family */
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SH1106_ID,
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SSD1305_ID,
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SSD1306_ID,
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SSD1307_ID,
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SSD1309_ID,
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/* ssd132x family */
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SSD1322_ID,
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SSD1325_ID,
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SSD1327_ID,
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NR_SSD130X_VARIANTS
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};
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struct ssd130x_deviceinfo {
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u32 default_vcomh;
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u32 default_dclk_div;
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u32 default_dclk_frq;
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u32 default_width;
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u32 default_height;
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bool need_pwm;
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bool need_chargepump;
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bool page_mode_only;
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enum ssd130x_family_ids family_id;
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};
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struct ssd130x_device {
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struct drm_device drm;
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struct device *dev;
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struct drm_display_mode mode;
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struct drm_plane primary_plane;
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struct drm_crtc crtc;
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struct drm_encoder encoder;
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struct drm_connector connector;
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struct i2c_client *client;
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struct regmap *regmap;
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const struct ssd130x_deviceinfo *device_info;
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unsigned page_address_mode : 1;
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unsigned area_color_enable : 1;
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unsigned com_invdir : 1;
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unsigned com_lrremap : 1;
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unsigned com_seq : 1;
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unsigned lookup_table_set : 1;
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unsigned low_power : 1;
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unsigned seg_remap : 1;
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u32 com_offset;
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u32 contrast;
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u32 dclk_div;
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u32 dclk_frq;
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u32 height;
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u8 lookup_table[4];
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u32 page_offset;
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u32 col_offset;
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u32 prechargep1;
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u32 prechargep2;
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struct backlight_device *bl_dev;
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struct pwm_device *pwm;
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struct gpio_desc *reset;
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struct regulator *vcc_reg;
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u32 vcomh;
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u32 width;
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/* Cached address ranges */
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u8 col_start;
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u8 col_end;
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u8 page_start;
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u8 page_end;
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};
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extern const struct ssd130x_deviceinfo ssd130x_variants[];
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struct ssd130x_device *ssd130x_probe(struct device *dev, struct regmap *regmap);
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void ssd130x_remove(struct ssd130x_device *ssd130x);
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void ssd130x_shutdown(struct ssd130x_device *ssd130x);
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#endif /* __SSD130X_H__ */
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