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>
33 	IOVCC = 0,  enumerator
41 	struct gpio_desc *enable_gpio; /* Power IC supply enable */
54 	struct mipi_dsi_device *dsi = stk->dsi;  in stk_panel_init()
55 	struct device *dev = &stk->dsi->dev;  in stk_panel_init()
94 	ret = mipi_dsi_dcs_set_column_address(dsi, 0, stk->mode->hdisplay - 1);  in stk_panel_init()
100 	ret = mipi_dsi_dcs_set_page_address(dsi, 0, stk->mode->vdisplay - 1);  in stk_panel_init()
111 	struct mipi_dsi_device *dsi = stk->dsi;  in stk_panel_on()
112 	struct device *dev = &stk->dsi->dev;  in stk_panel_on()
126 	struct mipi_dsi_device *dsi = stk->dsi;  in stk_panel_off()
127 	struct device *dev = &stk->dsi->dev;  in stk_panel_off()
130 	dsi->mode_flags &= ~MIPI_DSI_MODE_LPM;  in stk_panel_off()
148 	regulator_bulk_disable(ARRAY_SIZE(stk->supplies), stk->supplies);  in stk_panel_unprepare()
149 	gpiod_set_value(stk->reset_gpio, 0);  in stk_panel_unprepare()
150 	gpiod_set_value(stk->enable_gpio, 1);  in stk_panel_unprepare()
158 	struct device *dev = &stk->dsi->dev;  in stk_panel_prepare()
161 	gpiod_set_value(stk->reset_gpio, 0);  in stk_panel_prepare()
162 	gpiod_set_value(stk->enable_gpio, 0);  in stk_panel_prepare()
163 	ret = regulator_enable(stk->supplies[IOVCC].consumer);  in stk_panel_prepare()
168 	ret = regulator_enable(stk->supplies[POWER].consumer);  in stk_panel_prepare()
173 	gpiod_set_value(stk->enable_gpio, 1);  in stk_panel_prepare()
175 	gpiod_set_value(stk->reset_gpio, 1);  in stk_panel_prepare()
192 	regulator_disable(stk->supplies[POWER].consumer);  in stk_panel_prepare()
194 	regulator_disable(stk->supplies[IOVCC].consumer);  in stk_panel_prepare()
195 	gpiod_set_value(stk->reset_gpio, 0);  in stk_panel_prepare()
196 	gpiod_set_value(stk->enable_gpio, 0);  in stk_panel_prepare()
220 	mode = drm_mode_duplicate(connector->dev, &default_mode);  in stk_panel_get_modes()
222 		dev_err(panel->dev, "failed to add mode %ux%ux@%u\n",  in stk_panel_get_modes()
225 		return -ENOMEM;  in stk_panel_get_modes()
230 	connector->display_info.width_mm = default_mode.width_mm;  in stk_panel_get_modes()
231 	connector->display_info.height_mm = default_mode.height_mm;  in stk_panel_get_modes()
241 	dsi->mode_flags &= ~MIPI_DSI_MODE_LPM;  in dsi_dcs_bl_get_brightness()
246 	dsi->mode_flags |= MIPI_DSI_MODE_LPM;  in dsi_dcs_bl_get_brightness()
253 	struct device *dev = &dsi->dev;  in dsi_dcs_bl_update_status()
256 	dsi->mode_flags &= ~MIPI_DSI_MODE_LPM;  in dsi_dcs_bl_update_status()
257 	ret = mipi_dsi_dcs_set_display_brightness(dsi, bl->props.brightness);  in dsi_dcs_bl_update_status()
263 	dsi->mode_flags |= MIPI_DSI_MODE_LPM;  in dsi_dcs_bl_update_status()
275 	struct device *dev = &dsi->dev;  in drm_panel_create_dsi_backlight()
300 	struct device *dev = &stk->dsi->dev;  in stk_panel_add()
303 	stk->mode = &default_mode;  in stk_panel_add()
305 	stk->supplies[IOVCC].supply = "iovcc";  in stk_panel_add()
306 	stk->supplies[POWER].supply = "power";  in stk_panel_add()
307 	ret = devm_regulator_bulk_get(dev, ARRAY_SIZE(stk->supplies), stk->supplies);  in stk_panel_add()
313 	stk->reset_gpio = devm_gpiod_get(dev, "reset", GPIOD_OUT_LOW);  in stk_panel_add()
314 	if (IS_ERR(stk->reset_gpio)) {  in stk_panel_add()
315 		ret = PTR_ERR(stk->reset_gpio);  in stk_panel_add()
316 		dev_err(dev, "cannot get reset-gpios %d\n", ret);  in stk_panel_add()
320 	stk->enable_gpio = devm_gpiod_get(dev, "enable", GPIOD_OUT_LOW);  in stk_panel_add()
321 	if (IS_ERR(stk->enable_gpio)) {  in stk_panel_add()
322 		ret = PTR_ERR(stk->enable_gpio);  in stk_panel_add()
323 		dev_err(dev, "cannot get enable-gpio %d\n", ret);  in stk_panel_add()
327 	stk->backlight = drm_panel_create_dsi_backlight(stk->dsi);  in stk_panel_add()
328 	if (IS_ERR(stk->backlight)) {  in stk_panel_add()
329 		ret = PTR_ERR(stk->backlight);  in stk_panel_add()
334 	drm_panel_init(&stk->base, &stk->dsi->dev, &stk_panel_funcs,  in stk_panel_add()
337 	drm_panel_add(&stk->base);  in stk_panel_add()
347 	dsi->lanes = 4;  in stk_panel_probe()
348 	dsi->format = MIPI_DSI_FMT_RGB888;  in stk_panel_probe()
349 	dsi->mode_flags = (MIPI_DSI_MODE_VIDEO | MIPI_DSI_MODE_LPM);  in stk_panel_probe()
351 	stk = devm_kzalloc(&dsi->dev, sizeof(*stk), GFP_KERNEL);  in stk_panel_probe()
353 		return -ENOMEM;  in stk_panel_probe()
357 	stk->dsi = dsi;  in stk_panel_probe()
365 		drm_panel_remove(&stk->base);  in stk_panel_probe()
377 		dev_err(&dsi->dev, "failed to detach from DSI host: %d\n",  in stk_panel_remove()
380 	drm_panel_remove(&stk->base);  in stk_panel_remove()
385 		.name = "panel-startek-kd070fhfid015",