// SPDX-License-Identifier: GPL-2.0-only /* * DRM driver for Solomon SSD13xx OLED displays * * Copyright 2022 Red Hat Inc. * Author: Javier Martinez Canillas <[email protected]> * * Based on drivers/video/fbdev/ssd1307fb.c * Copyright 2012 Free Electrons */ #include <linux/backlight.h> #include <linux/bitfield.h> #include <linux/bits.h> #include <linux/delay.h> #include <linux/gpio/consumer.h> #include <linux/property.h> #include <linux/pwm.h> #include <linux/regulator/consumer.h> #include <drm/drm_atomic.h> #include <drm/drm_atomic_helper.h> #include <drm/drm_crtc_helper.h> #include <drm/drm_damage_helper.h> #include <drm/drm_edid.h> #include <drm/drm_fbdev_shmem.h> #include <drm/drm_format_helper.h> #include <drm/drm_framebuffer.h> #include <drm/drm_gem_atomic_helper.h> #include <drm/drm_gem_framebuffer_helper.h> #include <drm/drm_gem_shmem_helper.h> #include <drm/drm_managed.h> #include <drm/drm_modes.h> #include <drm/drm_rect.h> #include <drm/drm_probe_helper.h> #include "ssd130x.h" #define DRIVER_NAME … #define DRIVER_DESC … #define DRIVER_DATE … #define DRIVER_MAJOR … #define DRIVER_MINOR … #define SSD130X_PAGE_HEIGHT … #define SSD132X_SEGMENT_WIDTH … /* ssd13xx commands */ #define SSD13XX_CONTRAST … #define SSD13XX_SET_SEG_REMAP … #define SSD13XX_SET_MULTIPLEX_RATIO … #define SSD13XX_DISPLAY_OFF … #define SSD13XX_DISPLAY_ON … #define SSD13XX_SET_SEG_REMAP_MASK … #define SSD13XX_SET_SEG_REMAP_SET(val) … /* ssd130x commands */ #define SSD130X_PAGE_COL_START_LOW … #define SSD130X_PAGE_COL_START_HIGH … #define SSD130X_SET_ADDRESS_MODE … #define SSD130X_SET_COL_RANGE … #define SSD130X_SET_PAGE_RANGE … #define SSD130X_SET_LOOKUP_TABLE … #define SSD130X_CHARGE_PUMP … #define SSD130X_START_PAGE_ADDRESS … #define SSD130X_SET_COM_SCAN_DIR … #define SSD130X_SET_DISPLAY_OFFSET … #define SSD130X_SET_CLOCK_FREQ … #define SSD130X_SET_AREA_COLOR_MODE … #define SSD130X_SET_PRECHARGE_PERIOD … #define SSD130X_SET_COM_PINS_CONFIG … #define SSD130X_SET_VCOMH … /* ssd130x commands accessors */ #define SSD130X_PAGE_COL_START_MASK … #define SSD130X_PAGE_COL_START_HIGH_SET(val) … #define SSD130X_PAGE_COL_START_LOW_SET(val) … #define SSD130X_START_PAGE_ADDRESS_MASK … #define SSD130X_START_PAGE_ADDRESS_SET(val) … #define SSD130X_SET_COM_SCAN_DIR_MASK … #define SSD130X_SET_COM_SCAN_DIR_SET(val) … #define SSD130X_SET_CLOCK_DIV_MASK … #define SSD130X_SET_CLOCK_DIV_SET(val) … #define SSD130X_SET_CLOCK_FREQ_MASK … #define SSD130X_SET_CLOCK_FREQ_SET(val) … #define SSD130X_SET_PRECHARGE_PERIOD1_MASK … #define SSD130X_SET_PRECHARGE_PERIOD1_SET(val) … #define SSD130X_SET_PRECHARGE_PERIOD2_MASK … #define SSD130X_SET_PRECHARGE_PERIOD2_SET(val) … #define SSD130X_SET_COM_PINS_CONFIG1_MASK … #define SSD130X_SET_COM_PINS_CONFIG1_SET(val) … #define SSD130X_SET_COM_PINS_CONFIG2_MASK … #define SSD130X_SET_COM_PINS_CONFIG2_SET(val) … #define SSD130X_SET_ADDRESS_MODE_HORIZONTAL … #define SSD130X_SET_ADDRESS_MODE_VERTICAL … #define SSD130X_SET_ADDRESS_MODE_PAGE … #define SSD130X_SET_AREA_COLOR_MODE_ENABLE … #define SSD130X_SET_AREA_COLOR_MODE_LOW_POWER … /* ssd132x commands */ #define SSD132X_SET_COL_RANGE … #define SSD132X_SET_DEACTIVATE_SCROLL … #define SSD132X_SET_ROW_RANGE … #define SSD132X_SET_DISPLAY_START … #define SSD132X_SET_DISPLAY_OFFSET … #define SSD132X_SET_DISPLAY_NORMAL … #define SSD132X_SET_FUNCTION_SELECT_A … #define SSD132X_SET_PHASE_LENGTH … #define SSD132X_SET_CLOCK_FREQ … #define SSD132X_SET_GPIO … #define SSD132X_SET_PRECHARGE_PERIOD … #define SSD132X_SET_GRAY_SCALE_TABLE … #define SSD132X_SELECT_DEFAULT_TABLE … #define SSD132X_SET_PRECHARGE_VOLTAGE … #define SSD130X_SET_VCOMH_VOLTAGE … #define SSD132X_SET_FUNCTION_SELECT_B … /* ssd133x commands */ #define SSD133X_SET_COL_RANGE … #define SSD133X_SET_ROW_RANGE … #define SSD133X_CONTRAST_A … #define SSD133X_CONTRAST_B … #define SSD133X_CONTRAST_C … #define SSD133X_SET_MASTER_CURRENT … #define SSD132X_SET_PRECHARGE_A … #define SSD132X_SET_PRECHARGE_B … #define SSD132X_SET_PRECHARGE_C … #define SSD133X_SET_DISPLAY_START … #define SSD133X_SET_DISPLAY_OFFSET … #define SSD133X_SET_DISPLAY_NORMAL … #define SSD133X_SET_MASTER_CONFIG … #define SSD133X_POWER_SAVE_MODE … #define SSD133X_PHASES_PERIOD … #define SSD133X_SET_CLOCK_FREQ … #define SSD133X_SET_PRECHARGE_VOLTAGE … #define SSD133X_SET_VCOMH_VOLTAGE … #define MAX_CONTRAST … const struct ssd130x_deviceinfo ssd130x_variants[] = …; EXPORT_SYMBOL_NS_GPL(…); struct ssd130x_crtc_state { … }; struct ssd130x_plane_state { … }; static inline struct ssd130x_crtc_state *to_ssd130x_crtc_state(struct drm_crtc_state *state) { … } static inline struct ssd130x_plane_state *to_ssd130x_plane_state(struct drm_plane_state *state) { … } static inline struct ssd130x_device *drm_to_ssd130x(struct drm_device *drm) { … } /* * Helper to write data (SSD13XX_DATA) to the device. */ static int ssd130x_write_data(struct ssd130x_device *ssd130x, u8 *values, int count) { … } /* * Helper to write command (SSD13XX_COMMAND). The fist variadic argument * is the command to write and the following are the command options. * * Note that the ssd13xx protocol requires each command and option to be * written as a SSD13XX_COMMAND device register value. That is why a call * to regmap_write(..., SSD13XX_COMMAND, ...) is done for each argument. */ static int ssd130x_write_cmd(struct ssd130x_device *ssd130x, int count, /* u8 cmd, u8 option, ... */...) { … } /* Set address range for horizontal/vertical addressing modes */ static int ssd130x_set_col_range(struct ssd130x_device *ssd130x, u8 col_start, u8 cols) { … } static int ssd130x_set_page_range(struct ssd130x_device *ssd130x, u8 page_start, u8 pages) { … } /* Set page and column start address for page addressing mode */ static int ssd130x_set_page_pos(struct ssd130x_device *ssd130x, u8 page_start, u8 col_start) { … } static int ssd130x_pwm_enable(struct ssd130x_device *ssd130x) { … } static void ssd130x_reset(struct ssd130x_device *ssd130x) { … } static int ssd130x_power_on(struct ssd130x_device *ssd130x) { … } static void ssd130x_power_off(struct ssd130x_device *ssd130x) { … } static int ssd130x_init(struct ssd130x_device *ssd130x) { … } static int ssd132x_init(struct ssd130x_device *ssd130x) { … } static int ssd133x_init(struct ssd130x_device *ssd130x) { … } static int ssd130x_update_rect(struct ssd130x_device *ssd130x, struct drm_rect *rect, u8 *buf, u8 *data_array) { … } static int ssd132x_update_rect(struct ssd130x_device *ssd130x, struct drm_rect *rect, u8 *buf, u8 *data_array) { … } static int ssd133x_update_rect(struct ssd130x_device *ssd130x, struct drm_rect *rect, u8 *data_array, unsigned int pitch) { … } static void ssd130x_clear_screen(struct ssd130x_device *ssd130x, u8 *data_array) { … } static void ssd132x_clear_screen(struct ssd130x_device *ssd130x, u8 *data_array) { … } static void ssd133x_clear_screen(struct ssd130x_device *ssd130x, u8 *data_array) { … } static int ssd130x_fb_blit_rect(struct drm_framebuffer *fb, const struct iosys_map *vmap, struct drm_rect *rect, u8 *buf, u8 *data_array, struct drm_format_conv_state *fmtcnv_state) { … } static int ssd132x_fb_blit_rect(struct drm_framebuffer *fb, const struct iosys_map *vmap, struct drm_rect *rect, u8 *buf, u8 *data_array, struct drm_format_conv_state *fmtcnv_state) { … } static int ssd133x_fb_blit_rect(struct drm_framebuffer *fb, const struct iosys_map *vmap, struct drm_rect *rect, u8 *data_array, struct drm_format_conv_state *fmtcnv_state) { … } static int ssd130x_primary_plane_atomic_check(struct drm_plane *plane, struct drm_atomic_state *state) { … } static int ssd132x_primary_plane_atomic_check(struct drm_plane *plane, struct drm_atomic_state *state) { … } static int ssd133x_primary_plane_atomic_check(struct drm_plane *plane, struct drm_atomic_state *state) { … } static void ssd130x_primary_plane_atomic_update(struct drm_plane *plane, struct drm_atomic_state *state) { … } static void ssd132x_primary_plane_atomic_update(struct drm_plane *plane, struct drm_atomic_state *state) { … } static void ssd133x_primary_plane_atomic_update(struct drm_plane *plane, struct drm_atomic_state *state) { … } static void ssd130x_primary_plane_atomic_disable(struct drm_plane *plane, struct drm_atomic_state *state) { … } static void ssd132x_primary_plane_atomic_disable(struct drm_plane *plane, struct drm_atomic_state *state) { … } static void ssd133x_primary_plane_atomic_disable(struct drm_plane *plane, struct drm_atomic_state *state) { … } /* Called during init to allocate the plane's atomic state. */ static void ssd130x_primary_plane_reset(struct drm_plane *plane) { … } static struct drm_plane_state *ssd130x_primary_plane_duplicate_state(struct drm_plane *plane) { … } static void ssd130x_primary_plane_destroy_state(struct drm_plane *plane, struct drm_plane_state *state) { … } static const struct drm_plane_helper_funcs ssd130x_primary_plane_helper_funcs[] = …; static const struct drm_plane_funcs ssd130x_primary_plane_funcs = …; static enum drm_mode_status ssd130x_crtc_mode_valid(struct drm_crtc *crtc, const struct drm_display_mode *mode) { … } static int ssd130x_crtc_atomic_check(struct drm_crtc *crtc, struct drm_atomic_state *state) { … } static int ssd132x_crtc_atomic_check(struct drm_crtc *crtc, struct drm_atomic_state *state) { … } static int ssd133x_crtc_atomic_check(struct drm_crtc *crtc, struct drm_atomic_state *state) { … } /* Called during init to allocate the CRTC's atomic state. */ static void ssd130x_crtc_reset(struct drm_crtc *crtc) { … } static struct drm_crtc_state *ssd130x_crtc_duplicate_state(struct drm_crtc *crtc) { … } static void ssd130x_crtc_destroy_state(struct drm_crtc *crtc, struct drm_crtc_state *state) { … } /* * The CRTC is always enabled. Screen updates are performed by * the primary plane's atomic_update function. Disabling clears * the screen in the primary plane's atomic_disable function. */ static const struct drm_crtc_helper_funcs ssd130x_crtc_helper_funcs[] = …; static const struct drm_crtc_funcs ssd130x_crtc_funcs = …; static void ssd130x_encoder_atomic_enable(struct drm_encoder *encoder, struct drm_atomic_state *state) { … } static void ssd132x_encoder_atomic_enable(struct drm_encoder *encoder, struct drm_atomic_state *state) { … } static void ssd133x_encoder_atomic_enable(struct drm_encoder *encoder, struct drm_atomic_state *state) { … } static void ssd130x_encoder_atomic_disable(struct drm_encoder *encoder, struct drm_atomic_state *state) { … } static const struct drm_encoder_helper_funcs ssd130x_encoder_helper_funcs[] = …; static const struct drm_encoder_funcs ssd130x_encoder_funcs = …; static int ssd130x_connector_get_modes(struct drm_connector *connector) { … } static const struct drm_connector_helper_funcs ssd130x_connector_helper_funcs = …; static const struct drm_connector_funcs ssd130x_connector_funcs = …; static const struct drm_mode_config_funcs ssd130x_mode_config_funcs = …; static const uint32_t ssd130x_formats[] = …; DEFINE_DRM_GEM_FOPS(ssd130x_fops); static const struct drm_driver ssd130x_drm_driver = …; static int ssd130x_update_bl(struct backlight_device *bdev) { … } static const struct backlight_ops ssd130xfb_bl_ops = …; static void ssd130x_parse_properties(struct ssd130x_device *ssd130x) { … } static int ssd130x_init_modeset(struct ssd130x_device *ssd130x) { … } static int ssd130x_get_resources(struct ssd130x_device *ssd130x) { … } struct ssd130x_device *ssd130x_probe(struct device *dev, struct regmap *regmap) { … } EXPORT_SYMBOL_GPL(…); void ssd130x_remove(struct ssd130x_device *ssd130x) { … } EXPORT_SYMBOL_GPL(…); void ssd130x_shutdown(struct ssd130x_device *ssd130x) { … } EXPORT_SYMBOL_GPL(…); MODULE_DESCRIPTION(…); MODULE_AUTHOR(…) …; MODULE_LICENSE(…) …;
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