1 // SPDX-License-Identifier: GPL-2.0-only
5  * Copyright (C) 2013 Texas Instruments Incorporated - https://www.ti.com/
81 	if (ddata->bldev)  in dsicm_bl_power()
82 		backlight = ddata->bldev;  in dsicm_bl_power()
83 	else if (ddata->extbldev)  in dsicm_bl_power()
84 		backlight = ddata->extbldev;  in dsicm_bl_power()
96 	ddata->hw_guard_wait = msecs_to_jiffies(guard_msec);  in hw_guard_start()
97 	ddata->hw_guard_end = jiffies + ddata->hw_guard_wait;  in hw_guard_start()
102 	unsigned long wait = ddata->hw_guard_end - jiffies;  in hw_guard_wait()
104 	if ((long)wait > 0 && wait <= ddata->hw_guard_wait) {  in hw_guard_wait()
112 	return mipi_dsi_dcs_read(ddata->dsi, dcs_cmd, data, 1);  in dsicm_dcs_read_1()
117 	return mipi_dsi_dcs_write(ddata->dsi, dcs_cmd, &param, 1);  in dsicm_dcs_write_1()
127 	r = mipi_dsi_dcs_enter_sleep_mode(ddata->dsi);  in dsicm_sleep_in()
144 	r = mipi_dsi_dcs_exit_sleep_mode(ddata->dsi);  in dsicm_sleep_out()
155 static int dsicm_get_id(struct panel_drv_data *ddata, u8 *id1, u8 *id2, u8 *id3)  in dsicm_get_id()  argument
159 	r = dsicm_dcs_read_1(ddata, DCS_GET_ID1, id1);  in dsicm_get_id()
174 	struct mipi_dsi_device *dsi = ddata->dsi;  in dsicm_set_update_window()
177 	r = mipi_dsi_dcs_set_column_address(dsi, 0, ddata->mode.hdisplay - 1);  in dsicm_set_update_window()
181 	r = mipi_dsi_dcs_set_page_address(dsi, 0, ddata->mode.vdisplay - 1);  in dsicm_set_update_window()
190 	struct panel_drv_data *ddata = dev_get_drvdata(&dev->dev);  in dsicm_bl_update_status()
194 	dev_dbg(&ddata->dsi->dev, "update brightness to %d\n", level);  in dsicm_bl_update_status()
196 	mutex_lock(&ddata->lock);  in dsicm_bl_update_status()
198 	if (ddata->enabled)  in dsicm_bl_update_status()
202 	mutex_unlock(&ddata->lock);  in dsicm_bl_update_status()
222 	int r = -ENODEV;  in num_dsi_errors_show()
224 	mutex_lock(&ddata->lock);  in num_dsi_errors_show()
226 	if (ddata->enabled)  in num_dsi_errors_show()
229 	mutex_unlock(&ddata->lock);  in num_dsi_errors_show()
241 	u8 id1, id2, id3;  in hw_revision_show()  local
242 	int r = -ENODEV;  in hw_revision_show()
244 	mutex_lock(&ddata->lock);  in hw_revision_show()
246 	if (ddata->enabled)  in hw_revision_show()
247 		r = dsicm_get_id(ddata, &id1, &id2, &id3);  in hw_revision_show()
249 	mutex_unlock(&ddata->lock);  in hw_revision_show()
254 	return sysfs_emit(buf, "%02x.%02x.%02x\n", id1, id2, id3);  in hw_revision_show()
272 	gpiod_set_value(ddata->reset_gpio, 1);  in dsicm_hw_reset()
275 	gpiod_set_value(ddata->reset_gpio, 0);  in dsicm_hw_reset()
278 	gpiod_set_value(ddata->reset_gpio, 1);  in dsicm_hw_reset()
285 	u8 id1, id2, id3;  in dsicm_power_on()  local
290 	ddata->dsi->mode_flags |= MIPI_DSI_MODE_LPM;  in dsicm_power_on()
296 	r = dsicm_get_id(ddata, &id1, &id2, &id3);  in dsicm_power_on()
309 	r = mipi_dsi_dcs_set_pixel_format(ddata->dsi, MIPI_DCS_PIXEL_FMT_24BIT);  in dsicm_power_on()
317 	r = mipi_dsi_dcs_set_display_on(ddata->dsi);  in dsicm_power_on()
321 	if (ddata->panel_data->te_support) {  in dsicm_power_on()
322 		r = mipi_dsi_dcs_set_tear_on(ddata->dsi, MIPI_DSI_DCS_TEAR_MODE_VBLANK);  in dsicm_power_on()
330 	ddata->enabled = true;  in dsicm_power_on()
332 	if (!ddata->intro_printed) {  in dsicm_power_on()
333 		dev_info(&ddata->dsi->dev, "panel revision %02x.%02x.%02x\n",  in dsicm_power_on()
334 			id1, id2, id3);  in dsicm_power_on()
335 		ddata->intro_printed = true;  in dsicm_power_on()
338 	ddata->dsi->mode_flags &= ~MIPI_DSI_MODE_LPM;  in dsicm_power_on()
342 	dev_err(&ddata->dsi->dev, "error while enabling panel, issuing HW reset\n");  in dsicm_power_on()
353 	ddata->enabled = false;  in dsicm_power_off()
355 	r = mipi_dsi_dcs_set_display_off(ddata->dsi);  in dsicm_power_off()
360 		dev_err(&ddata->dsi->dev,  in dsicm_power_off()
373 	r = regulator_bulk_enable(ARRAY_SIZE(ddata->supplies), ddata->supplies);  in dsicm_prepare()
375 		dev_err(&ddata->dsi->dev, "failed to enable supplies: %d\n", r);  in dsicm_prepare()
385 	mutex_lock(&ddata->lock);  in dsicm_enable()
391 	mutex_unlock(&ddata->lock);  in dsicm_enable()
397 	dev_err(&ddata->dsi->dev, "enable failed (%d)\n", r);  in dsicm_enable()
398 	mutex_unlock(&ddata->lock);  in dsicm_enable()
407 	r = regulator_bulk_disable(ARRAY_SIZE(ddata->supplies), ddata->supplies);  in dsicm_unprepare()
409 		dev_err(&ddata->dsi->dev, "failed to disable supplies: %d\n", r);  in dsicm_unprepare()
421 	mutex_lock(&ddata->lock);  in dsicm_disable()
425 	mutex_unlock(&ddata->lock);  in dsicm_disable()
436 	mode = drm_mode_duplicate(connector->dev, &ddata->mode);  in dsicm_get_modes()
438 		dev_err(&ddata->dsi->dev, "failed to add mode %ux%ux@%u kHz\n",  in dsicm_get_modes()
439 			ddata->mode.hdisplay, ddata->mode.vdisplay,  in dsicm_get_modes()
440 			ddata->mode.clock);  in dsicm_get_modes()
441 		return -ENOMEM;  in dsicm_get_modes()
444 	connector->display_info.width_mm = ddata->panel_data->width_mm;  in dsicm_get_modes()
445 	connector->display_info.height_mm = ddata->panel_data->height_mm;  in dsicm_get_modes()
465 	struct drm_display_mode *mode = &ddata->mode;  in dsicm_probe_of()
467 	ddata->reset_gpio = devm_gpiod_get(&dsi->dev, "reset", GPIOD_OUT_LOW);  in dsicm_probe_of()
468 	if (IS_ERR(ddata->reset_gpio)) {  in dsicm_probe_of()
469 		err = PTR_ERR(ddata->reset_gpio);  in dsicm_probe_of()
470 		dev_err(&dsi->dev, "reset gpio request failed: %d", err);  in dsicm_probe_of()
474 	mode->hdisplay = mode->hsync_start = mode->hsync_end = mode->htotal =  in dsicm_probe_of()
475 		ddata->panel_data->xres;  in dsicm_probe_of()
476 	mode->vdisplay = mode->vsync_start = mode->vsync_end = mode->vtotal =  in dsicm_probe_of()
477 		ddata->panel_data->yres;  in dsicm_probe_of()
478 	mode->clock = ddata->panel_data->xres * ddata->panel_data->yres *  in dsicm_probe_of()
479 		ddata->panel_data->refresh / 1000;  in dsicm_probe_of()
480 	mode->width_mm = ddata->panel_data->width_mm;  in dsicm_probe_of()
481 	mode->height_mm = ddata->panel_data->height_mm;  in dsicm_probe_of()
482 	mode->type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED;  in dsicm_probe_of()
485 	ddata->supplies[0].supply = "vpnl";  in dsicm_probe_of()
486 	ddata->supplies[1].supply = "vddi";  in dsicm_probe_of()
487 	err = devm_regulator_bulk_get(&dsi->dev, ARRAY_SIZE(ddata->supplies),  in dsicm_probe_of()
488 				      ddata->supplies);  in dsicm_probe_of()
492 	backlight = devm_of_find_backlight(&dsi->dev);  in dsicm_probe_of()
498 		ddata->extbldev = backlight;  in dsicm_probe_of()
500 		ddata->use_dsi_backlight = true;  in dsicm_probe_of()
509 	struct device *dev = &dsi->dev;  in dsicm_probe()
516 		return -ENOMEM;  in dsicm_probe()
519 	ddata->dsi = dsi;  in dsicm_probe()
521 	ddata->panel_data = of_device_get_match_data(dev);  in dsicm_probe()
522 	if (!ddata->panel_data)  in dsicm_probe()
523 		return -ENODEV;  in dsicm_probe()
529 	mutex_init(&ddata->lock);  in dsicm_probe()
533 	drm_panel_init(&ddata->panel, dev, &dsicm_panel_funcs,  in dsicm_probe()
536 	if (ddata->use_dsi_backlight) {  in dsicm_probe()
548 		ddata->bldev = bldev;  in dsicm_probe()
551 	r = sysfs_create_group(&dev->kobj, &dsicm_attr_group);  in dsicm_probe()
557 	dsi->lanes = 2;  in dsicm_probe()
558 	dsi->format = MIPI_DSI_FMT_RGB888;  in dsicm_probe()
559 	dsi->mode_flags = MIPI_DSI_CLOCK_NON_CONTINUOUS |  in dsicm_probe()
561 	dsi->hs_rate = ddata->panel_data->max_hs_rate;  in dsicm_probe()
562 	dsi->lp_rate = ddata->panel_data->max_lp_rate;  in dsicm_probe()
564 	drm_panel_add(&ddata->panel);  in dsicm_probe()
573 	drm_panel_remove(&ddata->panel);  in dsicm_probe()
574 	sysfs_remove_group(&dsi->dev.kobj, &dsicm_attr_group);  in dsicm_probe()
576 	if (ddata->extbldev)  in dsicm_probe()
577 		put_device(&ddata->extbldev->dev);  in dsicm_probe()
586 	dev_dbg(&dsi->dev, "remove\n");  in dsicm_remove()
590 	drm_panel_remove(&ddata->panel);  in dsicm_remove()
592 	sysfs_remove_group(&dsi->dev.kobj, &dsicm_attr_group);  in dsicm_remove()
594 	if (ddata->extbldev)  in dsicm_remove()
595 		put_device(&ddata->extbldev->dev);  in dsicm_remove()
634 	{ .compatible = "motorola,droid4-panel", &droid4_data },
644 		.name = "panel-dsi-cm",