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()
75 	mipi_dsi_dcs_set_column_address_multi(&dsi_ctx, 0, stk->mode->hdisplay - 1);  in stk_panel_init()
76 	mipi_dsi_dcs_set_page_address_multi(&dsi_ctx, 0, stk->mode->vdisplay - 1);  in stk_panel_init()
83 	struct mipi_dsi_device *dsi = stk->dsi;  in stk_panel_on()
95 	struct mipi_dsi_device *dsi = stk->dsi;  in stk_panel_off()
98 	dsi->mode_flags &= ~MIPI_DSI_MODE_LPM;  in stk_panel_off()
111 	regulator_bulk_disable(ARRAY_SIZE(stk->supplies), stk->supplies);  in stk_panel_unprepare()
112 	gpiod_set_value(stk->reset_gpio, 0);  in stk_panel_unprepare()
113 	gpiod_set_value(stk->enable_gpio, 1);  in stk_panel_unprepare()
123 	gpiod_set_value(stk->reset_gpio, 0);  in stk_panel_prepare()
124 	gpiod_set_value(stk->enable_gpio, 0);  in stk_panel_prepare()
125 	ret = regulator_enable(stk->supplies[IOVCC].consumer);  in stk_panel_prepare()
130 	ret = regulator_enable(stk->supplies[POWER].consumer);  in stk_panel_prepare()
135 	gpiod_set_value(stk->enable_gpio, 1);  in stk_panel_prepare()
137 	gpiod_set_value(stk->reset_gpio, 1);  in stk_panel_prepare()
150 	regulator_disable(stk->supplies[POWER].consumer);  in stk_panel_prepare()
152 	regulator_disable(stk->supplies[IOVCC].consumer);  in stk_panel_prepare()
153 	gpiod_set_value(stk->reset_gpio, 0);  in stk_panel_prepare()
154 	gpiod_set_value(stk->enable_gpio, 0);  in stk_panel_prepare()
178 	mode = drm_mode_duplicate(connector->dev, &default_mode);  in stk_panel_get_modes()
180 		dev_err(panel->dev, "failed to add mode %ux%ux@%u\n",  in stk_panel_get_modes()
183 		return -ENOMEM;  in stk_panel_get_modes()
188 	connector->display_info.width_mm = default_mode.width_mm;  in stk_panel_get_modes()
189 	connector->display_info.height_mm = default_mode.height_mm;  in stk_panel_get_modes()
199 	dsi->mode_flags &= ~MIPI_DSI_MODE_LPM;  in dsi_dcs_bl_get_brightness()
204 	dsi->mode_flags |= MIPI_DSI_MODE_LPM;  in dsi_dcs_bl_get_brightness()
213 	dsi->mode_flags &= ~MIPI_DSI_MODE_LPM;  in dsi_dcs_bl_update_status()
214 	mipi_dsi_dcs_set_display_brightness_multi(&dsi_ctx, bl->props.brightness);  in dsi_dcs_bl_update_status()
218 	dsi->mode_flags |= MIPI_DSI_MODE_LPM;  in dsi_dcs_bl_update_status()
230 	struct device *dev = &dsi->dev;  in drm_panel_create_dsi_backlight()
255 	struct device *dev = &stk->dsi->dev;  in stk_panel_add()
258 	stk->mode = &default_mode;  in stk_panel_add()
260 	stk->supplies[IOVCC].supply = "iovcc";  in stk_panel_add()
261 	stk->supplies[POWER].supply = "power";  in stk_panel_add()
262 	ret = devm_regulator_bulk_get(dev, ARRAY_SIZE(stk->supplies), stk->supplies);  in stk_panel_add()
268 	stk->reset_gpio = devm_gpiod_get(dev, "reset", GPIOD_OUT_LOW);  in stk_panel_add()
269 	if (IS_ERR(stk->reset_gpio)) {  in stk_panel_add()
270 		ret = PTR_ERR(stk->reset_gpio);  in stk_panel_add()
271 		dev_err(dev, "cannot get reset-gpios %d\n", ret);  in stk_panel_add()
275 	stk->enable_gpio = devm_gpiod_get(dev, "enable", GPIOD_OUT_LOW);  in stk_panel_add()
276 	if (IS_ERR(stk->enable_gpio)) {  in stk_panel_add()
277 		ret = PTR_ERR(stk->enable_gpio);  in stk_panel_add()
278 		dev_err(dev, "cannot get enable-gpio %d\n", ret);  in stk_panel_add()
282 	stk->backlight = drm_panel_create_dsi_backlight(stk->dsi);  in stk_panel_add()
283 	if (IS_ERR(stk->backlight)) {  in stk_panel_add()
284 		ret = PTR_ERR(stk->backlight);  in stk_panel_add()
289 	drm_panel_init(&stk->base, &stk->dsi->dev, &stk_panel_funcs,  in stk_panel_add()
292 	drm_panel_add(&stk->base);  in stk_panel_add()
302 	dsi->lanes = 4;  in stk_panel_probe()
303 	dsi->format = MIPI_DSI_FMT_RGB888;  in stk_panel_probe()
304 	dsi->mode_flags = (MIPI_DSI_MODE_VIDEO | MIPI_DSI_MODE_LPM);  in stk_panel_probe()
306 	stk = devm_kzalloc(&dsi->dev, sizeof(*stk), GFP_KERNEL);  in stk_panel_probe()
308 		return -ENOMEM;  in stk_panel_probe()
312 	stk->dsi = dsi;  in stk_panel_probe()
320 		drm_panel_remove(&stk->base);  in stk_panel_probe()
332 		dev_err(&dsi->dev, "failed to detach from DSI host: %d\n",  in stk_panel_remove()
335 	drm_panel_remove(&stk->base);  in stk_panel_remove()
340 		.name = "panel-startek-kd070fhfid015",