1 // SPDX-License-Identifier: GPL-2.0
8  * - Vinay Simha BN <simhavcs@gmail.com>
9  * - Sumit Semwal <sumit.semwal@linaro.org>
10  * - Guillaume La Roque <glaroque@baylibre.com>
34 	POWER = 1  enumerator
42 	struct gpio_desc *enable_gpio; /* Power IC supply enable */
45 	struct regulator_bulk_data supplies[2];  member
55 	struct mipi_dsi_device *dsi = stk->dsi;  in stk_panel_init()
56 	struct device *dev = &stk->dsi->dev;  in stk_panel_init()
95 	ret = mipi_dsi_dcs_set_column_address(dsi, 0, stk->mode->hdisplay - 1);  in stk_panel_init()
101 	ret = mipi_dsi_dcs_set_page_address(dsi, 0, stk->mode->vdisplay - 1);  in stk_panel_init()
112 	struct mipi_dsi_device *dsi = stk->dsi;  in stk_panel_on()
113 	struct device *dev = &stk->dsi->dev;  in stk_panel_on()
127 	struct mipi_dsi_device *dsi = stk->dsi;  in stk_panel_off()
128 	struct device *dev = &stk->dsi->dev;  in stk_panel_off()
131 	dsi->mode_flags &= ~MIPI_DSI_MODE_LPM;  in stk_panel_off()
148 	if (!stk->prepared)  in stk_panel_unprepare()
152 	regulator_bulk_disable(ARRAY_SIZE(stk->supplies), stk->supplies);  in stk_panel_unprepare()
153 	gpiod_set_value(stk->reset_gpio, 0);  in stk_panel_unprepare()
154 	gpiod_set_value(stk->enable_gpio, 1);  in stk_panel_unprepare()
156 	stk->prepared = false;  in stk_panel_unprepare()
164 	struct device *dev = &stk->dsi->dev;  in stk_panel_prepare()
167 	if (stk->prepared)  in stk_panel_prepare()
170 	gpiod_set_value(stk->reset_gpio, 0);  in stk_panel_prepare()
171 	gpiod_set_value(stk->enable_gpio, 0);  in stk_panel_prepare()
172 	ret = regulator_enable(stk->supplies[IOVCC].consumer);  in stk_panel_prepare()
177 	ret = regulator_enable(stk->supplies[POWER].consumer);  in stk_panel_prepare()
182 	gpiod_set_value(stk->enable_gpio, 1);  in stk_panel_prepare()
184 	gpiod_set_value(stk->reset_gpio, 1);  in stk_panel_prepare()
198 	stk->prepared = true;  in stk_panel_prepare()
203 	regulator_disable(stk->supplies[POWER].consumer);  in stk_panel_prepare()
205 	regulator_disable(stk->supplies[IOVCC].consumer);  in stk_panel_prepare()
206 	gpiod_set_value(stk->reset_gpio, 0);  in stk_panel_prepare()
207 	gpiod_set_value(stk->enable_gpio, 0);  in stk_panel_prepare()
231 	mode = drm_mode_duplicate(connector->dev, &default_mode);  in stk_panel_get_modes()
233 		dev_err(panel->dev, "failed to add mode %ux%ux@%u\n",  in stk_panel_get_modes()
236 		return -ENOMEM;  in stk_panel_get_modes()
241 	connector->display_info.width_mm = default_mode.width_mm;  in stk_panel_get_modes()
242 	connector->display_info.height_mm = default_mode.height_mm;  in stk_panel_get_modes()
252 	dsi->mode_flags &= ~MIPI_DSI_MODE_LPM;  in dsi_dcs_bl_get_brightness()
257 	dsi->mode_flags |= MIPI_DSI_MODE_LPM;  in dsi_dcs_bl_get_brightness()
264 	struct device *dev = &dsi->dev;  in dsi_dcs_bl_update_status()
267 	dsi->mode_flags &= ~MIPI_DSI_MODE_LPM;  in dsi_dcs_bl_update_status()
268 	ret = mipi_dsi_dcs_set_display_brightness(dsi, bl->props.brightness);  in dsi_dcs_bl_update_status()
274 	dsi->mode_flags |= MIPI_DSI_MODE_LPM;  in dsi_dcs_bl_update_status()
286 	struct device *dev = &dsi->dev;  in drm_panel_create_dsi_backlight()
311 	struct device *dev = &stk->dsi->dev;  in stk_panel_add()
314 	stk->mode = &default_mode;  in stk_panel_add()
316 	stk->supplies[IOVCC].supply = "iovcc";  in stk_panel_add()
317 	stk->supplies[POWER].supply = "power";  in stk_panel_add()
318 	ret = devm_regulator_bulk_get(dev, ARRAY_SIZE(stk->supplies), stk->supplies);  in stk_panel_add()
324 	stk->reset_gpio = devm_gpiod_get(dev, "reset", GPIOD_OUT_LOW);  in stk_panel_add()
325 	if (IS_ERR(stk->reset_gpio)) {  in stk_panel_add()
326 		ret = PTR_ERR(stk->reset_gpio);  in stk_panel_add()
327 		dev_err(dev, "cannot get reset-gpios %d\n", ret);  in stk_panel_add()
331 	stk->enable_gpio = devm_gpiod_get(dev, "enable", GPIOD_OUT_LOW);  in stk_panel_add()
332 	if (IS_ERR(stk->enable_gpio)) {  in stk_panel_add()
333 		ret = PTR_ERR(stk->enable_gpio);  in stk_panel_add()
334 		dev_err(dev, "cannot get enable-gpio %d\n", ret);  in stk_panel_add()
338 	stk->backlight = drm_panel_create_dsi_backlight(stk->dsi);  in stk_panel_add()
339 	if (IS_ERR(stk->backlight)) {  in stk_panel_add()
340 		ret = PTR_ERR(stk->backlight);  in stk_panel_add()
345 	drm_panel_init(&stk->base, &stk->dsi->dev, &stk_panel_funcs,  in stk_panel_add()
348 	drm_panel_add(&stk->base);  in stk_panel_add()
358 	dsi->lanes = 4;  in stk_panel_probe()
359 	dsi->format = MIPI_DSI_FMT_RGB888;  in stk_panel_probe()
360 	dsi->mode_flags = (MIPI_DSI_MODE_VIDEO | MIPI_DSI_MODE_LPM);  in stk_panel_probe()
362 	stk = devm_kzalloc(&dsi->dev, sizeof(*stk), GFP_KERNEL);  in stk_panel_probe()
364 		return -ENOMEM;  in stk_panel_probe()
368 	stk->dsi = dsi;  in stk_panel_probe()
376 		drm_panel_remove(&stk->base);  in stk_panel_probe()
388 		dev_err(&dsi->dev, "failed to detach from DSI host: %d\n",  in stk_panel_remove()
391 	drm_panel_remove(&stk->base);  in stk_panel_remove()
396 		.name = "panel-startek-kd070fhfid015",