1 // SPDX-License-Identifier: GPL-2.0+
3  * NEC NL8048HL11 Panel Driver
7  * Based on the omapdrm-specific panel-nec-nl8048hl11 driver
24 	struct drm_panel panel;  member
30 #define to_nl8048_device(p) container_of(p, struct nl8048_panel, panel)
38 	ret = spi_write(lcd->spi, data, sizeof(data));  in nl8048_write()
40 		dev_err(&lcd->spi->dev, "SPI write to %u failed: %d\n",  in nl8048_write()
90 static int nl8048_disable(struct drm_panel *panel)  in nl8048_disable()  argument
92 	struct nl8048_panel *lcd = to_nl8048_device(panel);  in nl8048_disable()
94 	gpiod_set_value_cansleep(lcd->reset_gpio, 0);  in nl8048_disable()
99 static int nl8048_enable(struct drm_panel *panel)  in nl8048_enable()  argument
101 	struct nl8048_panel *lcd = to_nl8048_device(panel);  in nl8048_enable()
103 	gpiod_set_value_cansleep(lcd->reset_gpio, 1);  in nl8048_enable()
125 static int nl8048_get_modes(struct drm_panel *panel,  in nl8048_get_modes()  argument
130 	mode = drm_mode_duplicate(connector->dev, &nl8048_mode);  in nl8048_get_modes()
132 		return -ENOMEM;  in nl8048_get_modes()
137 	connector->display_info.width_mm = nl8048_mode.width_mm;  in nl8048_get_modes()
138 	connector->display_info.height_mm = nl8048_mode.height_mm;  in nl8048_get_modes()
139 	connector->display_info.bus_flags = DRM_BUS_FLAG_DE_HIGH  in nl8048_get_modes()
166 	/* Reinitialize the panel. */  in nl8048_resume()
167 	spi_setup(lcd->spi);  in nl8048_resume()
181 	lcd = devm_kzalloc(&spi->dev, sizeof(*lcd), GFP_KERNEL);  in nl8048_probe()
183 		return -ENOMEM;  in nl8048_probe()
186 	lcd->spi = spi;  in nl8048_probe()
188 	lcd->reset_gpio = devm_gpiod_get(&spi->dev, "reset", GPIOD_OUT_LOW);  in nl8048_probe()
189 	if (IS_ERR(lcd->reset_gpio)) {  in nl8048_probe()
190 		dev_err(&spi->dev, "failed to parse reset gpio\n");  in nl8048_probe()
191 		return PTR_ERR(lcd->reset_gpio);  in nl8048_probe()
194 	spi->mode = SPI_MODE_0;  in nl8048_probe()
195 	spi->bits_per_word = 32;  in nl8048_probe()
199 		dev_err(&spi->dev, "failed to setup SPI: %d\n", ret);  in nl8048_probe()
207 	drm_panel_init(&lcd->panel, &lcd->spi->dev, &nl8048_funcs,  in nl8048_probe()
210 	drm_panel_add(&lcd->panel);  in nl8048_probe()
219 	drm_panel_remove(&lcd->panel);  in nl8048_remove()
220 	drm_panel_disable(&lcd->panel);  in nl8048_remove()
221 	drm_panel_unprepare(&lcd->panel);  in nl8048_remove()
243 		.name	= "panel-nec-nl8048hl11",
252 MODULE_DESCRIPTION("NEC-NL8048HL11 Driver");