1 // SPDX-License-Identifier: GPL-2.0+
3  * MIPI-DSI Samsung s6d16d0 panel driver. This is a 864x480
4  * AMOLED panel with a command-only DSI interface.
20 	struct regulator *supply;  member
51 	struct mipi_dsi_device *dsi = to_mipi_dsi_device(s6->dev);  in s6d16d0_unprepare()
57 		dev_err(s6->dev, "failed to enter sleep mode (%d)\n", ret);  in s6d16d0_unprepare()
62 	gpiod_set_value_cansleep(s6->reset_gpio, 1);  in s6d16d0_unprepare()
63 	regulator_disable(s6->supply);  in s6d16d0_unprepare()
71 	struct mipi_dsi_device *dsi = to_mipi_dsi_device(s6->dev);  in s6d16d0_prepare()
74 	ret = regulator_enable(s6->supply);  in s6d16d0_prepare()
76 		dev_err(s6->dev, "failed to enable supply (%d)\n", ret);  in s6d16d0_prepare()
81 	gpiod_set_value_cansleep(s6->reset_gpio, 1);  in s6d16d0_prepare()
83 	/* De-assert RESET */  in s6d16d0_prepare()
84 	gpiod_set_value_cansleep(s6->reset_gpio, 0);  in s6d16d0_prepare()
91 		dev_err(s6->dev, "failed to enable vblank TE (%d)\n", ret);  in s6d16d0_prepare()
97 		dev_err(s6->dev, "failed to exit sleep mode (%d)\n", ret);  in s6d16d0_prepare()
107 	struct mipi_dsi_device *dsi = to_mipi_dsi_device(s6->dev);  in s6d16d0_enable()
112 		dev_err(s6->dev, "failed to turn display on (%d)\n", ret);  in s6d16d0_enable()
122 	struct mipi_dsi_device *dsi = to_mipi_dsi_device(s6->dev);  in s6d16d0_disable()
127 		dev_err(s6->dev, "failed to turn display off (%d)\n", ret);  in s6d16d0_disable()
139 	mode = drm_mode_duplicate(connector->dev, &samsung_s6d16d0_mode);  in s6d16d0_get_modes()
141 		dev_err(panel->dev, "bad mode or failed to add mode\n");  in s6d16d0_get_modes()
142 		return -EINVAL;  in s6d16d0_get_modes()
145 	mode->type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED;  in s6d16d0_get_modes()
147 	connector->display_info.width_mm = mode->width_mm;  in s6d16d0_get_modes()
148 	connector->display_info.height_mm = mode->height_mm;  in s6d16d0_get_modes()
165 	struct device *dev = &dsi->dev;  in s6d16d0_probe()
171 		return -ENOMEM;  in s6d16d0_probe()
174 	s6->dev = dev;  in s6d16d0_probe()
176 	dsi->lanes = 2;  in s6d16d0_probe()
177 	dsi->format = MIPI_DSI_FMT_RGB888;  in s6d16d0_probe()
178 	dsi->hs_rate = 420160000;  in s6d16d0_probe()
179 	dsi->lp_rate = 19200000;  in s6d16d0_probe()
187 	dsi->mode_flags = MIPI_DSI_CLOCK_NON_CONTINUOUS;  in s6d16d0_probe()
189 	s6->supply = devm_regulator_get(dev, "vdd1");  in s6d16d0_probe()
190 	if (IS_ERR(s6->supply))  in s6d16d0_probe()
191 		return PTR_ERR(s6->supply);  in s6d16d0_probe()
194 	s6->reset_gpio = devm_gpiod_get_optional(dev, "reset",  in s6d16d0_probe()
196 	if (IS_ERR(s6->reset_gpio)) {  in s6d16d0_probe()
197 		ret = PTR_ERR(s6->reset_gpio);  in s6d16d0_probe()
198 		if (ret != -EPROBE_DEFER)  in s6d16d0_probe()
203 	drm_panel_init(&s6->panel, dev, &s6d16d0_drm_funcs,  in s6d16d0_probe()
206 	drm_panel_add(&s6->panel);  in s6d16d0_probe()
210 		drm_panel_remove(&s6->panel);  in s6d16d0_probe()
220 	drm_panel_remove(&s6->panel);  in s6d16d0_remove()
233 		.name = "panel-samsung-s6d16d0",
240 MODULE_DESCRIPTION("MIPI-DSI s6d16d0 Panel Driver");