6  * Based on AUO panel driver by Rob Clark <robdclark@gmail.com>
34  * When power is turned off to this panel a minimum off time of 500ms has to be
42 	struct mipi_dsi_device *dsi;  member
55 static inline struct wuxga_nt_panel *to_wuxga_nt_panel(struct drm_panel *panel)  in to_wuxga_nt_panel()  argument
57 	return container_of(panel, struct wuxga_nt_panel, base);  in to_wuxga_nt_panel()
62 	return mipi_dsi_turn_on_peripheral(wuxga_nt->dsi);  in wuxga_nt_panel_on()
65 static int wuxga_nt_panel_disable(struct drm_panel *panel)  in wuxga_nt_panel_disable()  argument
67 	struct wuxga_nt_panel *wuxga_nt = to_wuxga_nt_panel(panel);  in wuxga_nt_panel_disable()
70 	if (!wuxga_nt->enabled)  in wuxga_nt_panel_disable()
73 	mipi_ret = mipi_dsi_shutdown_peripheral(wuxga_nt->dsi);  in wuxga_nt_panel_disable()
75 	if (wuxga_nt->backlight) {  in wuxga_nt_panel_disable()
76 		wuxga_nt->backlight->props.power = FB_BLANK_POWERDOWN;  in wuxga_nt_panel_disable()
77 		wuxga_nt->backlight->props.state |= BL_CORE_FBBLANK;  in wuxga_nt_panel_disable()
78 		bl_ret = backlight_update_status(wuxga_nt->backlight);  in wuxga_nt_panel_disable()
81 	wuxga_nt->enabled = false;  in wuxga_nt_panel_disable()
86 static int wuxga_nt_panel_unprepare(struct drm_panel *panel)  in wuxga_nt_panel_unprepare()  argument
88 	struct wuxga_nt_panel *wuxga_nt = to_wuxga_nt_panel(panel);  in wuxga_nt_panel_unprepare()
90 	if (!wuxga_nt->prepared)  in wuxga_nt_panel_unprepare()
93 	regulator_disable(wuxga_nt->supply);  in wuxga_nt_panel_unprepare()
94 	wuxga_nt->earliest_wake = ktime_add_ms(ktime_get_real(), MIN_POFF_MS);  in wuxga_nt_panel_unprepare()
95 	wuxga_nt->prepared = false;  in wuxga_nt_panel_unprepare()
100 static int wuxga_nt_panel_prepare(struct drm_panel *panel)  in wuxga_nt_panel_prepare()  argument
102 	struct wuxga_nt_panel *wuxga_nt = to_wuxga_nt_panel(panel);  in wuxga_nt_panel_prepare()
106 	if (wuxga_nt->prepared)  in wuxga_nt_panel_prepare()
110 	 * If the user re-enabled the panel before the required off-time then  in wuxga_nt_panel_prepare()
111 	 * we need to wait the remaining period before re-enabling regulator  in wuxga_nt_panel_prepare()
113 	enablewait = ktime_ms_delta(wuxga_nt->earliest_wake, ktime_get_real());  in wuxga_nt_panel_prepare()
122 	ret = regulator_enable(wuxga_nt->supply);  in wuxga_nt_panel_prepare()
127 	 * A minimum delay of 250ms is required after power-up until commands  in wuxga_nt_panel_prepare()
134 		dev_err(panel->dev, "failed to set panel on: %d\n", ret);  in wuxga_nt_panel_prepare()
138 	wuxga_nt->prepared = true;  in wuxga_nt_panel_prepare()
143 	regulator_disable(wuxga_nt->supply);  in wuxga_nt_panel_prepare()
148 static int wuxga_nt_panel_enable(struct drm_panel *panel)  in wuxga_nt_panel_enable()  argument
150 	struct wuxga_nt_panel *wuxga_nt = to_wuxga_nt_panel(panel);  in wuxga_nt_panel_enable()
152 	if (wuxga_nt->enabled)  in wuxga_nt_panel_enable()
155 	if (wuxga_nt->backlight) {  in wuxga_nt_panel_enable()
156 		wuxga_nt->backlight->props.power = FB_BLANK_UNBLANK;  in wuxga_nt_panel_enable()
157 		wuxga_nt->backlight->props.state &= ~BL_CORE_FBBLANK;  in wuxga_nt_panel_enable()
158 		backlight_update_status(wuxga_nt->backlight);  in wuxga_nt_panel_enable()
161 	wuxga_nt->enabled = true;  in wuxga_nt_panel_enable()
179 static int wuxga_nt_panel_get_modes(struct drm_panel *panel)  in wuxga_nt_panel_get_modes()  argument
183 	mode = drm_mode_duplicate(panel->drm, &default_mode);  in wuxga_nt_panel_get_modes()
185 		dev_err(panel->drm->dev, "failed to add mode %ux%ux@%u\n",  in wuxga_nt_panel_get_modes()
188 		return -ENOMEM;  in wuxga_nt_panel_get_modes()
193 	drm_mode_probed_add(panel->connector, mode);  in wuxga_nt_panel_get_modes()
195 	panel->connector->display_info.width_mm = 217;  in wuxga_nt_panel_get_modes()
196 	panel->connector->display_info.height_mm = 136;  in wuxga_nt_panel_get_modes()
217 	struct device *dev = &wuxga_nt->dsi->dev;  in wuxga_nt_panel_add()
221 	wuxga_nt->mode = &default_mode;  in wuxga_nt_panel_add()
223 	wuxga_nt->supply = devm_regulator_get(dev, "power");  in wuxga_nt_panel_add()
224 	if (IS_ERR(wuxga_nt->supply))  in wuxga_nt_panel_add()
225 		return PTR_ERR(wuxga_nt->supply);  in wuxga_nt_panel_add()
227 	np = of_parse_phandle(dev->of_node, "backlight", 0);  in wuxga_nt_panel_add()
229 		wuxga_nt->backlight = of_find_backlight_by_node(np);  in wuxga_nt_panel_add()
232 		if (!wuxga_nt->backlight)  in wuxga_nt_panel_add()
233 			return -EPROBE_DEFER;  in wuxga_nt_panel_add()
236 	drm_panel_init(&wuxga_nt->base);  in wuxga_nt_panel_add()
237 	wuxga_nt->base.funcs = &wuxga_nt_panel_funcs;  in wuxga_nt_panel_add()
238 	wuxga_nt->base.dev = &wuxga_nt->dsi->dev;  in wuxga_nt_panel_add()
240 	ret = drm_panel_add(&wuxga_nt->base);  in wuxga_nt_panel_add()
247 	if (wuxga_nt->backlight)  in wuxga_nt_panel_add()
248 		put_device(&wuxga_nt->backlight->dev);  in wuxga_nt_panel_add()
255 	if (wuxga_nt->base.dev)  in wuxga_nt_panel_del()
256 		drm_panel_remove(&wuxga_nt->base);  in wuxga_nt_panel_del()
258 	if (wuxga_nt->backlight)  in wuxga_nt_panel_del()
259 		put_device(&wuxga_nt->backlight->dev);  in wuxga_nt_panel_del()
262 static int wuxga_nt_panel_probe(struct mipi_dsi_device *dsi)  in wuxga_nt_panel_probe()  argument
267 	dsi->lanes = 4;  in wuxga_nt_panel_probe()
268 	dsi->format = MIPI_DSI_FMT_RGB888;  in wuxga_nt_panel_probe()
269 	dsi->mode_flags = MIPI_DSI_MODE_VIDEO |  in wuxga_nt_panel_probe()
274 	wuxga_nt = devm_kzalloc(&dsi->dev, sizeof(*wuxga_nt), GFP_KERNEL);  in wuxga_nt_panel_probe()
276 		return -ENOMEM;  in wuxga_nt_panel_probe()
278 	mipi_dsi_set_drvdata(dsi, wuxga_nt);  in wuxga_nt_panel_probe()
280 	wuxga_nt->dsi = dsi;  in wuxga_nt_panel_probe()
286 	return mipi_dsi_attach(dsi);  in wuxga_nt_panel_probe()
289 static int wuxga_nt_panel_remove(struct mipi_dsi_device *dsi)  in wuxga_nt_panel_remove()  argument
291 	struct wuxga_nt_panel *wuxga_nt = mipi_dsi_get_drvdata(dsi);  in wuxga_nt_panel_remove()
294 	ret = wuxga_nt_panel_disable(&wuxga_nt->base);  in wuxga_nt_panel_remove()
296 		dev_err(&dsi->dev, "failed to disable panel: %d\n", ret);  in wuxga_nt_panel_remove()
298 	ret = mipi_dsi_detach(dsi);  in wuxga_nt_panel_remove()
300 		dev_err(&dsi->dev, "failed to detach from DSI host: %d\n", ret);  in wuxga_nt_panel_remove()
307 static void wuxga_nt_panel_shutdown(struct mipi_dsi_device *dsi)  in wuxga_nt_panel_shutdown()  argument
309 	struct wuxga_nt_panel *wuxga_nt = mipi_dsi_get_drvdata(dsi);  in wuxga_nt_panel_shutdown()
311 	wuxga_nt_panel_disable(&wuxga_nt->base);  in wuxga_nt_panel_shutdown()
316 		.name = "panel-panasonic-vvx10f034n00",
326 MODULE_DESCRIPTION("Panasonic VVX10F034N00 Novatek NT1397-based WUXGA (1920x1200) video mode panel …