1 // SPDX-License-Identifier: GPL-2.0-only
21 	/* the datasheet refers to them as DSI-LINK1 and DSI-LINK2 */
30 static inline struct sharp_panel *to_sharp_panel(struct drm_panel *panel)  in to_sharp_panel()  argument
32 	return container_of(panel, struct sharp_panel, base);  in to_sharp_panel()
37 	unsigned int refresh = drm_mode_vrefresh(sharp->mode);  in sharp_wait_frames()
48 	struct mipi_dsi_device *dsi = sharp->link1;  in sharp_panel_write()  local
51 	err = mipi_dsi_generic_write(dsi, payload, sizeof(payload));  in sharp_panel_write()
53 		dev_err(&dsi->dev, "failed to write %02x to %04x: %zd\n",  in sharp_panel_write()
58 	err = mipi_dsi_dcs_nop(dsi);  in sharp_panel_write()
60 		dev_err(&dsi->dev, "failed to send DCS nop: %zd\n", err);  in sharp_panel_write()
76 	err = mipi_dsi_generic_read(sharp->link1, &offset, sizeof(offset),  in sharp_panel_read()
79 		dev_err(&sharp->link1->dev, "failed to read from %04x: %zd\n",  in sharp_panel_read()
85 static int sharp_panel_unprepare(struct drm_panel *panel)  in sharp_panel_unprepare()  argument
87 	struct sharp_panel *sharp = to_sharp_panel(panel);  in sharp_panel_unprepare()
92 	err = mipi_dsi_dcs_set_display_off(sharp->link1);  in sharp_panel_unprepare()
94 		dev_err(panel->dev, "failed to set display off: %d\n", err);  in sharp_panel_unprepare()
96 	err = mipi_dsi_dcs_enter_sleep_mode(sharp->link1);  in sharp_panel_unprepare()
98 		dev_err(panel->dev, "failed to enter sleep mode: %d\n", err);  in sharp_panel_unprepare()
102 	regulator_disable(sharp->supply);  in sharp_panel_unprepare()
113 	err = mipi_dsi_dcs_set_column_address(left, 0, mode->hdisplay / 2 - 1);  in sharp_setup_symmetrical_split()
115 		dev_err(&left->dev, "failed to set column address: %d\n", err);  in sharp_setup_symmetrical_split()
119 	err = mipi_dsi_dcs_set_page_address(left, 0, mode->vdisplay - 1);  in sharp_setup_symmetrical_split()
121 		dev_err(&left->dev, "failed to set page address: %d\n", err);  in sharp_setup_symmetrical_split()
125 	err = mipi_dsi_dcs_set_column_address(right, mode->hdisplay / 2,  in sharp_setup_symmetrical_split()
126 					      mode->hdisplay - 1);  in sharp_setup_symmetrical_split()
128 		dev_err(&right->dev, "failed to set column address: %d\n", err);  in sharp_setup_symmetrical_split()
132 	err = mipi_dsi_dcs_set_page_address(right, 0, mode->vdisplay - 1);  in sharp_setup_symmetrical_split()
134 		dev_err(&right->dev, "failed to set page address: %d\n", err);  in sharp_setup_symmetrical_split()
141 static int sharp_panel_prepare(struct drm_panel *panel)  in sharp_panel_prepare()  argument
143 	struct sharp_panel *sharp = to_sharp_panel(panel);  in sharp_panel_prepare()
147 	err = regulator_enable(sharp->supply);  in sharp_panel_prepare()
152 	 * According to the datasheet, the panel needs around 10 ms to fully  in sharp_panel_prepare()
154 	 * mode to make sure the panel is ready. Throw in another 20 ms for  in sharp_panel_prepare()
159 	err = mipi_dsi_dcs_exit_sleep_mode(sharp->link1);  in sharp_panel_prepare()
161 		dev_err(panel->dev, "failed to exit sleep mode: %d\n", err);  in sharp_panel_prepare()
174 	/* set left-right mode */  in sharp_panel_prepare()
177 		dev_err(panel->dev, "failed to set left-right mode: %d\n", err);  in sharp_panel_prepare()
184 		dev_err(panel->dev, "failed to enable command mode: %d\n", err);  in sharp_panel_prepare()
188 	err = mipi_dsi_dcs_set_pixel_format(sharp->link1, format);  in sharp_panel_prepare()
190 		dev_err(panel->dev, "failed to set pixel format: %d\n", err);  in sharp_panel_prepare()
195 	 * TODO: The device supports both left-right and even-odd split  in sharp_panel_prepare()
196 	 * configurations, but this driver currently supports only the left-  in sharp_panel_prepare()
198 	 * put in place to communicate the configuration back to the DSI host  in sharp_panel_prepare()
201 	err = sharp_setup_symmetrical_split(sharp->link1, sharp->link2,  in sharp_panel_prepare()
202 					    sharp->mode);  in sharp_panel_prepare()
204 		dev_err(panel->dev, "failed to set up symmetrical split: %d\n",  in sharp_panel_prepare()
209 	err = mipi_dsi_dcs_set_display_on(sharp->link1);  in sharp_panel_prepare()
211 		dev_err(panel->dev, "failed to set display on: %d\n", err);  in sharp_panel_prepare()
221 	regulator_disable(sharp->supply);  in sharp_panel_prepare()
237 static int sharp_panel_get_modes(struct drm_panel *panel,  in sharp_panel_get_modes()  argument
242 	mode = drm_mode_duplicate(connector->dev, &default_mode);  in sharp_panel_get_modes()
244 		dev_err(panel->dev, "failed to add mode %ux%ux@%u\n",  in sharp_panel_get_modes()
247 		return -ENOMEM;  in sharp_panel_get_modes()
254 	connector->display_info.width_mm = 217;  in sharp_panel_get_modes()
255 	connector->display_info.height_mm = 136;  in sharp_panel_get_modes()
276 	sharp->mode = &default_mode;  in sharp_panel_add()
278 	sharp->supply = devm_regulator_get(&sharp->link1->dev, "power");  in sharp_panel_add()
279 	if (IS_ERR(sharp->supply))  in sharp_panel_add()
280 		return PTR_ERR(sharp->supply);  in sharp_panel_add()
282 	ret = drm_panel_of_backlight(&sharp->base);  in sharp_panel_add()
286 	drm_panel_add(&sharp->base);  in sharp_panel_add()
293 	if (sharp->base.dev)  in sharp_panel_del()
294 		drm_panel_remove(&sharp->base);  in sharp_panel_del()
296 	if (sharp->link2)  in sharp_panel_del()
297 		put_device(&sharp->link2->dev);  in sharp_panel_del()
300 static int sharp_panel_probe(struct mipi_dsi_device *dsi)  in sharp_panel_probe()  argument
307 	dsi->lanes = 4;  in sharp_panel_probe()
308 	dsi->format = MIPI_DSI_FMT_RGB888;  in sharp_panel_probe()
309 	dsi->mode_flags = MIPI_DSI_MODE_LPM;  in sharp_panel_probe()
311 	/* Find DSI-LINK1 */  in sharp_panel_probe()
312 	np = of_parse_phandle(dsi->dev.of_node, "link2", 0);  in sharp_panel_probe()
318 			return -EPROBE_DEFER;  in sharp_panel_probe()
321 	/* register a panel for only the DSI-LINK1 interface */  in sharp_panel_probe()
323 		sharp = devm_drm_panel_alloc(&dsi->dev, __typeof(*sharp), base,  in sharp_panel_probe()
327 			put_device(&secondary->dev);  in sharp_panel_probe()
331 		mipi_dsi_set_drvdata(dsi, sharp);  in sharp_panel_probe()
333 		sharp->link2 = secondary;  in sharp_panel_probe()
334 		sharp->link1 = dsi;  in sharp_panel_probe()
338 			put_device(&secondary->dev);  in sharp_panel_probe()
343 	err = mipi_dsi_attach(dsi);  in sharp_panel_probe()
354 static void sharp_panel_remove(struct mipi_dsi_device *dsi)  in sharp_panel_remove()  argument
356 	struct sharp_panel *sharp = mipi_dsi_get_drvdata(dsi);  in sharp_panel_remove()
359 	err = mipi_dsi_detach(dsi);  in sharp_panel_remove()
361 		dev_err(&dsi->dev, "failed to detach from DSI host: %d\n", err);  in sharp_panel_remove()
363 	/* only detach from host for the DSI-LINK2 interface */  in sharp_panel_remove()
370 		.name = "panel-sharp-lq101r1sx01",
379 MODULE_DESCRIPTION("Sharp LQ101R1SX01 panel driver");