1 // SPDX-License-Identifier: GPL-2.0-only
6  * Author: Javier Martinez Canillas <javierm@redhat.com>
138 	return regmap_bulk_write(ssd130x->regmap, SSD130X_DATA, values, count);  in ssd130x_write_data()
160 		ret = regmap_write(ssd130x->regmap, SSD130X_COMMAND, value);  in ssd130x_write_cmd()
163 	} while (--count);  in ssd130x_write_cmd()
175 	u8 col_end = col_start + cols - 1;  in ssd130x_set_col_range()
178 	if (col_start == ssd130x->col_start && col_end == ssd130x->col_end)  in ssd130x_set_col_range()
185 	ssd130x->col_start = col_start;  in ssd130x_set_col_range()
186 	ssd130x->col_end = col_end;  in ssd130x_set_col_range()
193 	u8 page_end = page_start + pages - 1;  in ssd130x_set_page_range()
196 	if (page_start == ssd130x->page_start && page_end == ssd130x->page_end)  in ssd130x_set_page_range()
203 	ssd130x->page_start = page_start;  in ssd130x_set_page_range()
204 	ssd130x->page_end = page_end;  in ssd130x_set_page_range()
230 	struct device *dev = ssd130x->dev;  in ssd130x_pwm_enable()
233 	ssd130x->pwm = pwm_get(dev, NULL);  in ssd130x_pwm_enable()
234 	if (IS_ERR(ssd130x->pwm)) {  in ssd130x_pwm_enable()
236 		return PTR_ERR(ssd130x->pwm);  in ssd130x_pwm_enable()
239 	pwm_init_state(ssd130x->pwm, &pwmstate);  in ssd130x_pwm_enable()
241 	pwm_apply_state(ssd130x->pwm, &pwmstate);  in ssd130x_pwm_enable()
244 	pwm_enable(ssd130x->pwm);  in ssd130x_pwm_enable()
247 		ssd130x->pwm->pwm, pwm_get_period(ssd130x->pwm));  in ssd130x_pwm_enable()
254 	if (!ssd130x->reset)  in ssd130x_reset()
258 	gpiod_set_value_cansleep(ssd130x->reset, 1);  in ssd130x_reset()
260 	gpiod_set_value_cansleep(ssd130x->reset, 0);  in ssd130x_reset()
266 	struct device *dev = ssd130x->dev;  in ssd130x_power_on()
271 	ret = regulator_enable(ssd130x->vcc_reg);  in ssd130x_power_on()
277 	if (ssd130x->device_info->need_pwm) {  in ssd130x_power_on()
281 			regulator_disable(ssd130x->vcc_reg);  in ssd130x_power_on()
291 	pwm_disable(ssd130x->pwm);  in ssd130x_power_off()
292 	pwm_put(ssd130x->pwm);  in ssd130x_power_off()
294 	regulator_disable(ssd130x->vcc_reg);  in ssd130x_power_off()
303 	ret = ssd130x_write_cmd(ssd130x, 2, SSD130X_CONTRAST, ssd130x->contrast);  in ssd130x_init()
307 	/* Set segment re-map */  in ssd130x_init()
309 		     SSD130X_SET_SEG_REMAP_SET(ssd130x->seg_remap));  in ssd130x_init()
314 	/* Set COM direction */  in ssd130x_init()
316 		      SSD130X_SET_COM_SCAN_DIR_SET(ssd130x->com_invdir));  in ssd130x_init()
322 	ret = ssd130x_write_cmd(ssd130x, 2, SSD130X_SET_MULTIPLEX_RATIO, ssd130x->height - 1);  in ssd130x_init()
327 	ret = ssd130x_write_cmd(ssd130x, 2, SSD130X_SET_DISPLAY_OFFSET, ssd130x->com_offset);  in ssd130x_init()
332 	dclk = (SSD130X_SET_CLOCK_DIV_SET(ssd130x->dclk_div - 1) |  in ssd130x_init()
333 		SSD130X_SET_CLOCK_FREQ_SET(ssd130x->dclk_frq));  in ssd130x_init()
339 	if (ssd130x->area_color_enable || ssd130x->low_power) {  in ssd130x_init()
342 		if (ssd130x->area_color_enable)  in ssd130x_init()
345 		if (ssd130x->low_power)  in ssd130x_init()
354 	precharge = (SSD130X_SET_PRECHARGE_PERIOD1_SET(ssd130x->prechargep1) |  in ssd130x_init()
355 		     SSD130X_SET_PRECHARGE_PERIOD2_SET(ssd130x->prechargep2));  in ssd130x_init()
360 	/* Set COM pins configuration */  in ssd130x_init()
362 	compins |= (SSD130X_SET_COM_PINS_CONFIG1_SET(ssd130x->com_seq) |  in ssd130x_init()
363 		    SSD130X_SET_COM_PINS_CONFIG2_SET(ssd130x->com_lrremap));  in ssd130x_init()
369 	ret = ssd130x_write_cmd(ssd130x, 2, SSD130X_SET_VCOMH, ssd130x->vcomh);  in ssd130x_init()
373 	/* Turn on the DC-DC Charge Pump */  in ssd130x_init()
376 	if (ssd130x->device_info->need_chargepump)  in ssd130x_init()
384 	if (ssd130x->lookup_table_set) {  in ssd130x_init()
391 		for (i = 0; i < ARRAY_SIZE(ssd130x->lookup_table); i++) {  in ssd130x_init()
392 			u8 val = ssd130x->lookup_table[i];  in ssd130x_init()
395 				dev_warn(ssd130x->dev,  in ssd130x_init()
405 	if (ssd130x->page_address_mode)  in ssd130x_init()
417 	unsigned int x = rect->x1;  in ssd130x_update_rect()
418 	unsigned int y = rect->y1;  in ssd130x_update_rect()
423 	struct drm_device *drm = &ssd130x->drm;  in ssd130x_update_rect()
432 		return -ENOMEM;  in ssd130x_update_rect()
443 	 * wide. Each letter-number combination is a bit that controls  in ssd130x_update_rect()
463 	if (!ssd130x->page_address_mode) {  in ssd130x_update_rect()
465 		ret = ssd130x_set_col_range(ssd130x, ssd130x->col_offset + x, width);  in ssd130x_update_rect()
469 		ret = ssd130x_set_page_range(ssd130x, ssd130x->page_offset + y / 8, pages);  in ssd130x_update_rect()
478 		if (8 * (y / 8 + i + 1) > ssd130x->height)  in ssd130x_update_rect()
479 			m = ssd130x->height % 8;  in ssd130x_update_rect()
496 		if (ssd130x->page_address_mode) {  in ssd130x_update_rect()
498 						   ssd130x->page_offset + i,  in ssd130x_update_rect()
499 						   ssd130x->col_offset + x);  in ssd130x_update_rect()
512 	if (!ssd130x->page_address_mode)  in ssd130x_update_rect()
525 		.x2 = ssd130x->width,  in ssd130x_clear_screen()
527 		.y2 = ssd130x->height,  in ssd130x_clear_screen()
530 	buf = kcalloc(DIV_ROUND_UP(ssd130x->width, 8), ssd130x->height,  in ssd130x_clear_screen()
543 	struct ssd130x_device *ssd130x = drm_to_ssd130x(fb->dev);  in ssd130x_fb_blit_rect()
550 	rect->y1 = round_down(rect->y1, 8);  in ssd130x_fb_blit_rect()
551 	rect->y2 = min_t(unsigned int, round_up(rect->y2, 8), ssd130x->height);  in ssd130x_fb_blit_rect()
556 		return -ENOMEM;  in ssd130x_fb_blit_rect()
581 	struct drm_device *drm = plane->dev;  in ssd130x_primary_plane_helper_atomic_update()
588 	dst_clip = plane_state->dst;  in ssd130x_primary_plane_helper_atomic_update()
595 	ssd130x_fb_blit_rect(plane_state->fb, &shadow_plane_state->data[0], &dst_clip);  in ssd130x_primary_plane_helper_atomic_update()
603 	struct drm_device *drm = plane->dev;  in ssd130x_primary_plane_helper_atomic_disable()
632 	struct ssd130x_device *ssd130x = drm_to_ssd130x(crtc->dev);  in ssd130x_crtc_helper_mode_valid()
634 	if (mode->hdisplay != ssd130x->mode.hdisplay &&  in ssd130x_crtc_helper_mode_valid()
635 	    mode->vdisplay != ssd130x->mode.vdisplay)  in ssd130x_crtc_helper_mode_valid()
637 	else if (mode->hdisplay != ssd130x->mode.hdisplay)  in ssd130x_crtc_helper_mode_valid()
639 	else if (mode->vdisplay != ssd130x->mode.vdisplay)  in ssd130x_crtc_helper_mode_valid()
670 	struct drm_device *drm = crtc->dev;  in ssd130x_crtc_reset()
690 	struct drm_device *drm = encoder->dev;  in ssd130x_encoder_helper_atomic_enable()
700 	backlight_enable(ssd130x->bl_dev);  in ssd130x_encoder_helper_atomic_enable()
706 	struct drm_device *drm = encoder->dev;  in ssd130x_encoder_helper_atomic_disable()
709 	backlight_disable(ssd130x->bl_dev);  in ssd130x_encoder_helper_atomic_disable()
727 	struct ssd130x_device *ssd130x = drm_to_ssd130x(connector->dev);  in ssd130x_connector_helper_get_modes()
729 	struct device *dev = ssd130x->dev;  in ssd130x_connector_helper_get_modes()
731 	mode = drm_mode_duplicate(connector->dev, &ssd130x->mode);  in ssd130x_connector_helper_get_modes()
738 	drm_set_preferred_mode(connector, mode->hdisplay, mode->vdisplay);  in ssd130x_connector_helper_get_modes()
785 	ssd130x->contrast = brightness;  in ssd130x_update_bl()
791 	ret = ssd130x_write_cmd(ssd130x, 1, ssd130x->contrast);  in ssd130x_update_bl()
804 	struct device *dev = ssd130x->dev;  in ssd130x_parse_properties()
806 	if (device_property_read_u32(dev, "solomon,width", &ssd130x->width))  in ssd130x_parse_properties()
807 		ssd130x->width = 96;  in ssd130x_parse_properties()
809 	if (device_property_read_u32(dev, "solomon,height", &ssd130x->height))  in ssd130x_parse_properties()
810 		ssd130x->height = 16;  in ssd130x_parse_properties()
812 	if (device_property_read_u32(dev, "solomon,page-offset", &ssd130x->page_offset))  in ssd130x_parse_properties()
813 		ssd130x->page_offset = 1;  in ssd130x_parse_properties()
815 	if (device_property_read_u32(dev, "solomon,col-offset", &ssd130x->col_offset))  in ssd130x_parse_properties()
816 		ssd130x->col_offset = 0;  in ssd130x_parse_properties()
818 	if (device_property_read_u32(dev, "solomon,com-offset", &ssd130x->com_offset))  in ssd130x_parse_properties()
819 		ssd130x->com_offset = 0;  in ssd130x_parse_properties()
821 	if (device_property_read_u32(dev, "solomon,prechargep1", &ssd130x->prechargep1))  in ssd130x_parse_properties()
822 		ssd130x->prechargep1 = 2;  in ssd130x_parse_properties()
824 	if (device_property_read_u32(dev, "solomon,prechargep2", &ssd130x->prechargep2))  in ssd130x_parse_properties()
825 		ssd130x->prechargep2 = 2;  in ssd130x_parse_properties()
827 	if (!device_property_read_u8_array(dev, "solomon,lookup-table",  in ssd130x_parse_properties()
828 					   ssd130x->lookup_table,  in ssd130x_parse_properties()
829 					   ARRAY_SIZE(ssd130x->lookup_table)))  in ssd130x_parse_properties()
830 		ssd130x->lookup_table_set = 1;  in ssd130x_parse_properties()
832 	ssd130x->seg_remap = !device_property_read_bool(dev, "solomon,segment-no-remap");  in ssd130x_parse_properties()
833 	ssd130x->com_seq = device_property_read_bool(dev, "solomon,com-seq");  in ssd130x_parse_properties()
834 	ssd130x->com_lrremap = device_property_read_bool(dev, "solomon,com-lrremap");  in ssd130x_parse_properties()
835 	ssd130x->com_invdir = device_property_read_bool(dev, "solomon,com-invdir");  in ssd130x_parse_properties()
836 	ssd130x->area_color_enable =  in ssd130x_parse_properties()
837 		device_property_read_bool(dev, "solomon,area-color-enable");  in ssd130x_parse_properties()
838 	ssd130x->low_power = device_property_read_bool(dev, "solomon,low-power");  in ssd130x_parse_properties()
840 	ssd130x->contrast = 127;  in ssd130x_parse_properties()
841 	ssd130x->vcomh = ssd130x->device_info->default_vcomh;  in ssd130x_parse_properties()
844 	if (device_property_read_u32(dev, "solomon,dclk-div", &ssd130x->dclk_div))  in ssd130x_parse_properties()
845 		ssd130x->dclk_div = ssd130x->device_info->default_dclk_div;  in ssd130x_parse_properties()
846 	if (device_property_read_u32(dev, "solomon,dclk-frq", &ssd130x->dclk_frq))  in ssd130x_parse_properties()
847 		ssd130x->dclk_frq = ssd130x->device_info->default_dclk_frq;  in ssd130x_parse_properties()
852 	struct drm_display_mode *mode = &ssd130x->mode;  in ssd130x_init_modeset()
853 	struct device *dev = ssd130x->dev;  in ssd130x_init_modeset()
854 	struct drm_device *drm = &ssd130x->drm;  in ssd130x_init_modeset()
872 	mode->type = DRM_MODE_TYPE_DRIVER;  in ssd130x_init_modeset()
873 	mode->clock = 1;  in ssd130x_init_modeset()
874 	mode->hdisplay = mode->htotal = ssd130x->width;  in ssd130x_init_modeset()
875 	mode->hsync_start = mode->hsync_end = ssd130x->width;  in ssd130x_init_modeset()
876 	mode->vdisplay = mode->vtotal = ssd130x->height;  in ssd130x_init_modeset()
877 	mode->vsync_start = mode->vsync_end = ssd130x->height;  in ssd130x_init_modeset()
878 	mode->width_mm = 27;  in ssd130x_init_modeset()
879 	mode->height_mm = 27;  in ssd130x_init_modeset()
881 	max_width = max_t(unsigned long, mode->hdisplay, DRM_SHADOW_PLANE_MAX_WIDTH);  in ssd130x_init_modeset()
882 	max_height = max_t(unsigned long, mode->vdisplay, DRM_SHADOW_PLANE_MAX_HEIGHT);  in ssd130x_init_modeset()
884 	drm->mode_config.min_width = mode->hdisplay;  in ssd130x_init_modeset()
885 	drm->mode_config.max_width = max_width;  in ssd130x_init_modeset()
886 	drm->mode_config.min_height = mode->vdisplay;  in ssd130x_init_modeset()
887 	drm->mode_config.max_height = max_height;  in ssd130x_init_modeset()
888 	drm->mode_config.preferred_depth = 32;  in ssd130x_init_modeset()
889 	drm->mode_config.funcs = &ssd130x_mode_config_funcs;  in ssd130x_init_modeset()
893 	primary_plane = &ssd130x->primary_plane;  in ssd130x_init_modeset()
908 	crtc = &ssd130x->crtc;  in ssd130x_init_modeset()
920 	encoder = &ssd130x->encoder;  in ssd130x_init_modeset()
930 	encoder->possible_crtcs = drm_crtc_mask(crtc);  in ssd130x_init_modeset()
934 	connector = &ssd130x->connector;  in ssd130x_init_modeset()
957 	struct device *dev = ssd130x->dev;  in ssd130x_get_resources()
959 	ssd130x->reset = devm_gpiod_get_optional(dev, "reset", GPIOD_OUT_LOW);  in ssd130x_get_resources()
960 	if (IS_ERR(ssd130x->reset))  in ssd130x_get_resources()
961 		return dev_err_probe(dev, PTR_ERR(ssd130x->reset),  in ssd130x_get_resources()
964 	ssd130x->vcc_reg = devm_regulator_get(dev, "vcc");  in ssd130x_get_resources()
965 	if (IS_ERR(ssd130x->vcc_reg))  in ssd130x_get_resources()
966 		return dev_err_probe(dev, PTR_ERR(ssd130x->vcc_reg),  in ssd130x_get_resources()
985 	drm = &ssd130x->drm;  in ssd130x_probe()
987 	ssd130x->dev = dev;  in ssd130x_probe()
988 	ssd130x->regmap = regmap;  in ssd130x_probe()
989 	ssd130x->device_info = device_get_match_data(dev);  in ssd130x_probe()
991 	if (ssd130x->device_info->page_mode_only)  in ssd130x_probe()
992 		ssd130x->page_address_mode = 1;  in ssd130x_probe()
1006 	bl->props.brightness = ssd130x->contrast;  in ssd130x_probe()
1007 	bl->props.max_brightness = MAX_CONTRAST;  in ssd130x_probe()
1008 	ssd130x->bl_dev = bl;  in ssd130x_probe()
1026 	drm_dev_unplug(&ssd130x->drm);  in ssd130x_remove()
1032 	drm_atomic_helper_shutdown(&ssd130x->drm);  in ssd130x_shutdown()
1037 MODULE_AUTHOR("Javier Martinez Canillas <javierm@redhat.com>");