1 // SPDX-License-Identifier: GPL-2.0-only
120 	int ret = ctx->error;  in ld9040_clear_error()
122 	ctx->error = 0;  in ld9040_clear_error()
128 	struct spi_device *spi = to_spi_device(ctx->dev);  in ld9040_spi_write_word()
145 	if (ctx->error < 0 || len == 0)  in ld9040_dcs_write()
148 	dev_dbg(ctx->dev, "writing dcs seq: %*ph\n", (int)len, data);  in ld9040_dcs_write()
151 	while (!ret && --len) {  in ld9040_dcs_write()
157 		dev_err(ctx->dev, "error %d writing dcs seq: %*ph\n", ret,  in ld9040_dcs_write()
159 		ctx->error = ret;  in ld9040_dcs_write()
173 	ld9040_dcs_write(ctx, ld9040_gammas[ctx->brightness],  in ld9040_brightness_set()
174 			 ARRAY_SIZE(ld9040_gammas[ctx->brightness]));  in ld9040_brightness_set()
202 	ret = regulator_bulk_enable(ARRAY_SIZE(ctx->supplies), ctx->supplies);  in ld9040_power_on()
206 	msleep(ctx->power_on_delay);  in ld9040_power_on()
207 	gpiod_set_value(ctx->reset_gpio, 0);  in ld9040_power_on()
208 	msleep(ctx->reset_delay);  in ld9040_power_on()
209 	gpiod_set_value(ctx->reset_gpio, 1);  in ld9040_power_on()
210 	msleep(ctx->reset_delay);  in ld9040_power_on()
217 	return regulator_bulk_disable(ARRAY_SIZE(ctx->supplies), ctx->supplies);  in ld9040_power_off()
269 	mode = drm_mode_create(connector->dev);  in ld9040_get_modes()
271 		dev_err(panel->dev, "failed to create a new display mode\n");  in ld9040_get_modes()
275 	drm_display_mode_from_videomode(&ctx->vm, mode);  in ld9040_get_modes()
276 	mode->width_mm = ctx->width_mm;  in ld9040_get_modes()
277 	mode->height_mm = ctx->height_mm;  in ld9040_get_modes()
278 	connector->display_info.width_mm = mode->width_mm;  in ld9040_get_modes()
279 	connector->display_info.height_mm = mode->height_mm;  in ld9040_get_modes()
281 	mode->type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED;  in ld9040_get_modes()
297 	struct device *dev = ctx->dev;  in ld9040_parse_dt()
298 	struct device_node *np = dev->of_node;  in ld9040_parse_dt()
301 	ret = of_get_videomode(np, &ctx->vm, 0);  in ld9040_parse_dt()
305 	of_property_read_u32(np, "power-on-delay", &ctx->power_on_delay);  in ld9040_parse_dt()
306 	of_property_read_u32(np, "reset-delay", &ctx->reset_delay);  in ld9040_parse_dt()
307 	of_property_read_u32(np, "panel-width-mm", &ctx->width_mm);  in ld9040_parse_dt()
308 	of_property_read_u32(np, "panel-height-mm", &ctx->height_mm);  in ld9040_parse_dt()
315 	struct device *dev = &spi->dev;  in ld9040_probe()
321 		return -ENOMEM;  in ld9040_probe()
325 	ctx->dev = dev;  in ld9040_probe()
326 	ctx->brightness = ARRAY_SIZE(ld9040_gammas) - 1;  in ld9040_probe()
332 	ctx->supplies[0].supply = "vdd3";  in ld9040_probe()
333 	ctx->supplies[1].supply = "vci";  in ld9040_probe()
334 	ret = devm_regulator_bulk_get(dev, ARRAY_SIZE(ctx->supplies),  in ld9040_probe()
335 				      ctx->supplies);  in ld9040_probe()
339 	ctx->reset_gpio = devm_gpiod_get(dev, "reset", GPIOD_OUT_HIGH);  in ld9040_probe()
340 	if (IS_ERR(ctx->reset_gpio)) {  in ld9040_probe()
341 		dev_err(dev, "cannot get reset-gpios %ld\n",  in ld9040_probe()
342 			PTR_ERR(ctx->reset_gpio));  in ld9040_probe()
343 		return PTR_ERR(ctx->reset_gpio);  in ld9040_probe()
346 	spi->bits_per_word = 9;  in ld9040_probe()
353 	drm_panel_init(&ctx->panel, dev, &ld9040_drm_funcs,  in ld9040_probe()
356 	drm_panel_add(&ctx->panel);  in ld9040_probe()
366 	drm_panel_remove(&ctx->panel);  in ld9040_remove()
386 		.name = "panel-samsung-ld9040",