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.
19 	struct drm_panel panel;  member
43 static inline struct s6d16d0 *panel_to_s6d16d0(struct drm_panel *panel)  in panel_to_s6d16d0()  argument
45 	return container_of(panel, struct s6d16d0, panel);  in panel_to_s6d16d0()
48 static int s6d16d0_unprepare(struct drm_panel *panel)  in s6d16d0_unprepare()  argument
50 	struct s6d16d0 *s6 = panel_to_s6d16d0(panel);  in s6d16d0_unprepare()
51 	struct mipi_dsi_device *dsi = to_mipi_dsi_device(s6->dev);  in s6d16d0_unprepare()  local
55 	ret = mipi_dsi_dcs_enter_sleep_mode(dsi);  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()
68 static int s6d16d0_prepare(struct drm_panel *panel)  in s6d16d0_prepare()  argument
70 	struct s6d16d0 *s6 = panel_to_s6d16d0(panel);  in s6d16d0_prepare()
71 	struct mipi_dsi_device *dsi = to_mipi_dsi_device(s6->dev);  in s6d16d0_prepare()  local
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()
88 	ret = mipi_dsi_dcs_set_tear_on(dsi,  in s6d16d0_prepare()
91 		dev_err(s6->dev, "failed to enable vblank TE (%d)\n", ret);  in s6d16d0_prepare()
95 	ret = mipi_dsi_dcs_exit_sleep_mode(dsi);  in s6d16d0_prepare()
97 		dev_err(s6->dev, "failed to exit sleep mode (%d)\n", ret);  in s6d16d0_prepare()
104 static int s6d16d0_enable(struct drm_panel *panel)  in s6d16d0_enable()  argument
106 	struct s6d16d0 *s6 = panel_to_s6d16d0(panel);  in s6d16d0_enable()
107 	struct mipi_dsi_device *dsi = to_mipi_dsi_device(s6->dev);  in s6d16d0_enable()  local
110 	ret = mipi_dsi_dcs_set_display_on(dsi);  in s6d16d0_enable()
112 		dev_err(s6->dev, "failed to turn display on (%d)\n", ret);  in s6d16d0_enable()
119 static int s6d16d0_disable(struct drm_panel *panel)  in s6d16d0_disable()  argument
121 	struct s6d16d0 *s6 = panel_to_s6d16d0(panel);  in s6d16d0_disable()
122 	struct mipi_dsi_device *dsi = to_mipi_dsi_device(s6->dev);  in s6d16d0_disable()  local
125 	ret = mipi_dsi_dcs_set_display_off(dsi);  in s6d16d0_disable()
127 		dev_err(s6->dev, "failed to turn display off (%d)\n", ret);  in s6d16d0_disable()
134 static int s6d16d0_get_modes(struct drm_panel *panel,  in s6d16d0_get_modes()  argument
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()
163 static int s6d16d0_probe(struct mipi_dsi_device *dsi)  in s6d16d0_probe()  argument
165 	struct device *dev = &dsi->dev;  in s6d16d0_probe()
171 		return -ENOMEM;  in s6d16d0_probe()
173 	mipi_dsi_set_drvdata(dsi, s6);  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()
208 	ret = mipi_dsi_attach(dsi);  in s6d16d0_probe()
210 		drm_panel_remove(&s6->panel);  in s6d16d0_probe()
215 static void s6d16d0_remove(struct mipi_dsi_device *dsi)  in s6d16d0_remove()  argument
217 	struct s6d16d0 *s6 = mipi_dsi_get_drvdata(dsi);  in s6d16d0_remove()
219 	mipi_dsi_detach(dsi);  in s6d16d0_remove()
220 	drm_panel_remove(&s6->panel);  in s6d16d0_remove()
233 		.name = "panel-samsung-s6d16d0",
240 MODULE_DESCRIPTION("MIPI-DSI s6d16d0 Panel Driver");