1 // SPDX-License-Identifier: GPL-2.0-only
21 	/* the datasheet refers to them as DSI-LINK1 and DSI-LINK2 */
33 static inline struct sharp_panel *to_sharp_panel(struct drm_panel *panel)  in to_sharp_panel()  argument
35 	return container_of(panel, struct sharp_panel, base);  in to_sharp_panel()
40 	unsigned int refresh = drm_mode_vrefresh(sharp->mode);  in sharp_wait_frames()
51 	struct mipi_dsi_device *dsi = sharp->link1;  in sharp_panel_write()  local
54 	err = mipi_dsi_generic_write(dsi, payload, sizeof(payload));  in sharp_panel_write()
56 		dev_err(&dsi->dev, "failed to write %02x to %04x: %zd\n",  in sharp_panel_write()
61 	err = mipi_dsi_dcs_nop(dsi);  in sharp_panel_write()
63 		dev_err(&dsi->dev, "failed to send DCS nop: %zd\n", err);  in sharp_panel_write()
79 	err = mipi_dsi_generic_read(sharp->link1, &offset, sizeof(offset),  in sharp_panel_read()
82 		dev_err(&sharp->link1->dev, "failed to read from %04x: %zd\n",  in sharp_panel_read()
88 static int sharp_panel_disable(struct drm_panel *panel)  in sharp_panel_disable()  argument
90 	struct sharp_panel *sharp = to_sharp_panel(panel);  in sharp_panel_disable()
92 	if (!sharp->enabled)  in sharp_panel_disable()
95 	sharp->enabled = false;  in sharp_panel_disable()
100 static int sharp_panel_unprepare(struct drm_panel *panel)  in sharp_panel_unprepare()  argument
102 	struct sharp_panel *sharp = to_sharp_panel(panel);  in sharp_panel_unprepare()
105 	if (!sharp->prepared)  in sharp_panel_unprepare()
110 	err = mipi_dsi_dcs_set_display_off(sharp->link1);  in sharp_panel_unprepare()
112 		dev_err(panel->dev, "failed to set display off: %d\n", err);  in sharp_panel_unprepare()
114 	err = mipi_dsi_dcs_enter_sleep_mode(sharp->link1);  in sharp_panel_unprepare()
116 		dev_err(panel->dev, "failed to enter sleep mode: %d\n", err);  in sharp_panel_unprepare()
120 	regulator_disable(sharp->supply);  in sharp_panel_unprepare()
122 	sharp->prepared = false;  in sharp_panel_unprepare()
133 	err = mipi_dsi_dcs_set_column_address(left, 0, mode->hdisplay / 2 - 1);  in sharp_setup_symmetrical_split()
135 		dev_err(&left->dev, "failed to set column address: %d\n", err);  in sharp_setup_symmetrical_split()
139 	err = mipi_dsi_dcs_set_page_address(left, 0, mode->vdisplay - 1);  in sharp_setup_symmetrical_split()
141 		dev_err(&left->dev, "failed to set page address: %d\n", err);  in sharp_setup_symmetrical_split()
145 	err = mipi_dsi_dcs_set_column_address(right, mode->hdisplay / 2,  in sharp_setup_symmetrical_split()
146 					      mode->hdisplay - 1);  in sharp_setup_symmetrical_split()
148 		dev_err(&right->dev, "failed to set column address: %d\n", err);  in sharp_setup_symmetrical_split()
152 	err = mipi_dsi_dcs_set_page_address(right, 0, mode->vdisplay - 1);  in sharp_setup_symmetrical_split()
154 		dev_err(&right->dev, "failed to set page address: %d\n", err);  in sharp_setup_symmetrical_split()
161 static int sharp_panel_prepare(struct drm_panel *panel)  in sharp_panel_prepare()  argument
163 	struct sharp_panel *sharp = to_sharp_panel(panel);  in sharp_panel_prepare()
167 	if (sharp->prepared)  in sharp_panel_prepare()
170 	err = regulator_enable(sharp->supply);  in sharp_panel_prepare()
175 	 * According to the datasheet, the panel needs around 10 ms to fully  in sharp_panel_prepare()
177 	 * mode to make sure the panel is ready. Throw in another 20 ms for  in sharp_panel_prepare()
182 	err = mipi_dsi_dcs_exit_sleep_mode(sharp->link1);  in sharp_panel_prepare()
184 		dev_err(panel->dev, "failed to exit sleep mode: %d\n", err);  in sharp_panel_prepare()
197 	/* set left-right mode */  in sharp_panel_prepare()
200 		dev_err(panel->dev, "failed to set left-right mode: %d\n", err);  in sharp_panel_prepare()
207 		dev_err(panel->dev, "failed to enable command mode: %d\n", err);  in sharp_panel_prepare()
211 	err = mipi_dsi_dcs_set_pixel_format(sharp->link1, format);  in sharp_panel_prepare()
213 		dev_err(panel->dev, "failed to set pixel format: %d\n", err);  in sharp_panel_prepare()
218 	 * TODO: The device supports both left-right and even-odd split  in sharp_panel_prepare()
219 	 * configurations, but this driver currently supports only the left-  in sharp_panel_prepare()
221 	 * put in place to communicate the configuration back to the DSI host  in sharp_panel_prepare()
224 	err = sharp_setup_symmetrical_split(sharp->link1, sharp->link2,  in sharp_panel_prepare()
225 					    sharp->mode);  in sharp_panel_prepare()
227 		dev_err(panel->dev, "failed to set up symmetrical split: %d\n",  in sharp_panel_prepare()
232 	err = mipi_dsi_dcs_set_display_on(sharp->link1);  in sharp_panel_prepare()
234 		dev_err(panel->dev, "failed to set display on: %d\n", err);  in sharp_panel_prepare()
238 	sharp->prepared = true;  in sharp_panel_prepare()
246 	regulator_disable(sharp->supply);  in sharp_panel_prepare()
250 static int sharp_panel_enable(struct drm_panel *panel)  in sharp_panel_enable()  argument
252 	struct sharp_panel *sharp = to_sharp_panel(panel);  in sharp_panel_enable()
254 	if (sharp->enabled)  in sharp_panel_enable()
257 	sharp->enabled = true;  in sharp_panel_enable()
274 static int sharp_panel_get_modes(struct drm_panel *panel,  in sharp_panel_get_modes()  argument
279 	mode = drm_mode_duplicate(connector->dev, &default_mode);  in sharp_panel_get_modes()
281 		dev_err(panel->dev, "failed to add mode %ux%ux@%u\n",  in sharp_panel_get_modes()
284 		return -ENOMEM;  in sharp_panel_get_modes()
291 	connector->display_info.width_mm = 217;  in sharp_panel_get_modes()
292 	connector->display_info.height_mm = 136;  in sharp_panel_get_modes()
315 	sharp->mode = &default_mode;  in sharp_panel_add()
317 	sharp->supply = devm_regulator_get(&sharp->link1->dev, "power");  in sharp_panel_add()
318 	if (IS_ERR(sharp->supply))  in sharp_panel_add()
319 		return PTR_ERR(sharp->supply);  in sharp_panel_add()
321 	drm_panel_init(&sharp->base, &sharp->link1->dev, &sharp_panel_funcs,  in sharp_panel_add()
324 	ret = drm_panel_of_backlight(&sharp->base);  in sharp_panel_add()
328 	drm_panel_add(&sharp->base);  in sharp_panel_add()
335 	if (sharp->base.dev)  in sharp_panel_del()
336 		drm_panel_remove(&sharp->base);  in sharp_panel_del()
338 	if (sharp->link2)  in sharp_panel_del()
339 		put_device(&sharp->link2->dev);  in sharp_panel_del()
342 static int sharp_panel_probe(struct mipi_dsi_device *dsi)  in sharp_panel_probe()  argument
349 	dsi->lanes = 4;  in sharp_panel_probe()
350 	dsi->format = MIPI_DSI_FMT_RGB888;  in sharp_panel_probe()
351 	dsi->mode_flags = MIPI_DSI_MODE_LPM;  in sharp_panel_probe()
353 	/* Find DSI-LINK1 */  in sharp_panel_probe()
354 	np = of_parse_phandle(dsi->dev.of_node, "link2", 0);  in sharp_panel_probe()
360 			return -EPROBE_DEFER;  in sharp_panel_probe()
363 	/* register a panel for only the DSI-LINK1 interface */  in sharp_panel_probe()
365 		sharp = devm_kzalloc(&dsi->dev, sizeof(*sharp), GFP_KERNEL);  in sharp_panel_probe()
367 			put_device(&secondary->dev);  in sharp_panel_probe()
368 			return -ENOMEM;  in sharp_panel_probe()
371 		mipi_dsi_set_drvdata(dsi, sharp);  in sharp_panel_probe()
373 		sharp->link2 = secondary;  in sharp_panel_probe()
374 		sharp->link1 = dsi;  in sharp_panel_probe()
378 			put_device(&secondary->dev);  in sharp_panel_probe()
383 	err = mipi_dsi_attach(dsi);  in sharp_panel_probe()
394 static int sharp_panel_remove(struct mipi_dsi_device *dsi)  in sharp_panel_remove()  argument
396 	struct sharp_panel *sharp = mipi_dsi_get_drvdata(dsi);  in sharp_panel_remove()
399 	/* only detach from host for the DSI-LINK2 interface */  in sharp_panel_remove()
401 		mipi_dsi_detach(dsi);  in sharp_panel_remove()
405 	err = drm_panel_disable(&sharp->base);  in sharp_panel_remove()
407 		dev_err(&dsi->dev, "failed to disable panel: %d\n", err);  in sharp_panel_remove()
409 	err = mipi_dsi_detach(dsi);  in sharp_panel_remove()
411 		dev_err(&dsi->dev, "failed to detach from DSI host: %d\n", err);  in sharp_panel_remove()
418 static void sharp_panel_shutdown(struct mipi_dsi_device *dsi)  in sharp_panel_shutdown()  argument
420 	struct sharp_panel *sharp = mipi_dsi_get_drvdata(dsi);  in sharp_panel_shutdown()
422 	/* nothing to do for DSI-LINK2 */  in sharp_panel_shutdown()
426 	drm_panel_disable(&sharp->base);  in sharp_panel_shutdown()
431 		.name = "panel-sharp-lq101r1sx01",
441 MODULE_DESCRIPTION("Sharp LQ101R1SX01 panel driver");