1 // SPDX-License-Identifier: GPL-2.0
3  * Sharp LS037V7DW01 LCD Panel Driver
7  * Based on the omapdrm-specific panel-sharp-ls037v7dw01 driver
25 	struct drm_panel panel;  member
37 	container_of(p, struct ls037v7dw01_panel, panel)
39 static int ls037v7dw01_disable(struct drm_panel *panel)  in ls037v7dw01_disable()  argument
41 	struct ls037v7dw01_panel *lcd = to_ls037v7dw01_device(panel);  in ls037v7dw01_disable()
43 	gpiod_set_value_cansleep(lcd->ini_gpio, 0);  in ls037v7dw01_disable()
44 	gpiod_set_value_cansleep(lcd->resb_gpio, 0);  in ls037v7dw01_disable()
52 static int ls037v7dw01_unprepare(struct drm_panel *panel)  in ls037v7dw01_unprepare()  argument
54 	struct ls037v7dw01_panel *lcd = to_ls037v7dw01_device(panel);  in ls037v7dw01_unprepare()
56 	regulator_disable(lcd->vdd);  in ls037v7dw01_unprepare()
60 static int ls037v7dw01_prepare(struct drm_panel *panel)  in ls037v7dw01_prepare()  argument
62 	struct ls037v7dw01_panel *lcd = to_ls037v7dw01_device(panel);  in ls037v7dw01_prepare()
65 	ret = regulator_enable(lcd->vdd);  in ls037v7dw01_prepare()
67 		dev_err(&lcd->pdev->dev, "%s: failed to enable regulator\n",  in ls037v7dw01_prepare()
73 static int ls037v7dw01_enable(struct drm_panel *panel)  in ls037v7dw01_enable()  argument
75 	struct ls037v7dw01_panel *lcd = to_ls037v7dw01_device(panel);  in ls037v7dw01_enable()
80 	gpiod_set_value_cansleep(lcd->resb_gpio, 1);  in ls037v7dw01_enable()
81 	gpiod_set_value_cansleep(lcd->ini_gpio, 1);  in ls037v7dw01_enable()
102 static int ls037v7dw01_get_modes(struct drm_panel *panel,  in ls037v7dw01_get_modes()  argument
107 	mode = drm_mode_duplicate(connector->dev, &ls037v7dw01_mode);  in ls037v7dw01_get_modes()
109 		return -ENOMEM;  in ls037v7dw01_get_modes()
114 	connector->display_info.width_mm = ls037v7dw01_mode.width_mm;  in ls037v7dw01_get_modes()
115 	connector->display_info.height_mm = ls037v7dw01_mode.height_mm;  in ls037v7dw01_get_modes()
122 	connector->display_info.bus_flags = DRM_BUS_FLAG_DE_HIGH  in ls037v7dw01_get_modes()
141 	lcd = devm_kzalloc(&pdev->dev, sizeof(*lcd), GFP_KERNEL);  in ls037v7dw01_probe()
143 		return -ENOMEM;  in ls037v7dw01_probe()
146 	lcd->pdev = pdev;  in ls037v7dw01_probe()
148 	lcd->vdd = devm_regulator_get(&pdev->dev, "envdd");  in ls037v7dw01_probe()
149 	if (IS_ERR(lcd->vdd)) {  in ls037v7dw01_probe()
150 		dev_err(&pdev->dev, "failed to get regulator\n");  in ls037v7dw01_probe()
151 		return PTR_ERR(lcd->vdd);  in ls037v7dw01_probe()
154 	lcd->ini_gpio = devm_gpiod_get(&pdev->dev, "enable", GPIOD_OUT_LOW);  in ls037v7dw01_probe()
155 	if (IS_ERR(lcd->ini_gpio)) {  in ls037v7dw01_probe()
156 		dev_err(&pdev->dev, "failed to get enable gpio\n");  in ls037v7dw01_probe()
157 		return PTR_ERR(lcd->ini_gpio);  in ls037v7dw01_probe()
160 	lcd->resb_gpio = devm_gpiod_get(&pdev->dev, "reset", GPIOD_OUT_LOW);  in ls037v7dw01_probe()
161 	if (IS_ERR(lcd->resb_gpio)) {  in ls037v7dw01_probe()
162 		dev_err(&pdev->dev, "failed to get reset gpio\n");  in ls037v7dw01_probe()
163 		return PTR_ERR(lcd->resb_gpio);  in ls037v7dw01_probe()
166 	lcd->mo_gpio = devm_gpiod_get_index(&pdev->dev, "mode", 0,  in ls037v7dw01_probe()
168 	if (IS_ERR(lcd->mo_gpio)) {  in ls037v7dw01_probe()
169 		dev_err(&pdev->dev, "failed to get mode[0] gpio\n");  in ls037v7dw01_probe()
170 		return PTR_ERR(lcd->mo_gpio);  in ls037v7dw01_probe()
173 	lcd->lr_gpio = devm_gpiod_get_index(&pdev->dev, "mode", 1,  in ls037v7dw01_probe()
175 	if (IS_ERR(lcd->lr_gpio)) {  in ls037v7dw01_probe()
176 		dev_err(&pdev->dev, "failed to get mode[1] gpio\n");  in ls037v7dw01_probe()
177 		return PTR_ERR(lcd->lr_gpio);  in ls037v7dw01_probe()
180 	lcd->ud_gpio = devm_gpiod_get_index(&pdev->dev, "mode", 2,  in ls037v7dw01_probe()
182 	if (IS_ERR(lcd->ud_gpio)) {  in ls037v7dw01_probe()
183 		dev_err(&pdev->dev, "failed to get mode[2] gpio\n");  in ls037v7dw01_probe()
184 		return PTR_ERR(lcd->ud_gpio);  in ls037v7dw01_probe()
187 	drm_panel_init(&lcd->panel, &pdev->dev, &ls037v7dw01_funcs,  in ls037v7dw01_probe()
190 	drm_panel_add(&lcd->panel);  in ls037v7dw01_probe()
199 	drm_panel_remove(&lcd->panel);  in ls037v7dw01_remove()
200 	drm_panel_disable(&lcd->panel);  in ls037v7dw01_remove()
201 	drm_panel_unprepare(&lcd->panel);  in ls037v7dw01_remove()
217 		.name = "panel-sharp-ls037v7dw01",
225 MODULE_DESCRIPTION("Sharp LS037V7DW01 Panel Driver");