1 // SPDX-License-Identifier: GPL-2.0-only
7 #include <linux/backlight.h>
8 #include <linux/gpio/consumer.h>
29 	struct backlight_device *backlight;  member
48 	struct backlight_device *backlight = panel_encoder->mod->backlight;  in panel_encoder_dpms()  local
49 	struct gpio_desc *gpio = panel_encoder->mod->enable_gpio;  in panel_encoder_dpms()  local
51 	if (backlight) {  in panel_encoder_dpms()
52 		backlight->props.power = mode == DRM_MODE_DPMS_ON ?  in panel_encoder_dpms()
54 		backlight_update_status(backlight);  in panel_encoder_dpms()
57 	if (gpio)  in panel_encoder_dpms()
58 		gpiod_set_value_cansleep(gpio,  in panel_encoder_dpms()
93 	panel_encoder = devm_kzalloc(dev->dev, sizeof(*panel_encoder),  in panel_encoder_create()
98 	panel_encoder->mod = mod;  in panel_encoder_create()
100 	encoder = &panel_encoder->base;  in panel_encoder_create()
101 	encoder->possible_crtcs = 1;  in panel_encoder_create()
137 	struct drm_device *dev = connector->dev;  in panel_connector_get_modes()
139 	struct display_timings *timings = panel_connector->mod->timings;  in panel_connector_get_modes()
142 	for (i = 0; i < timings->num_timings; i++) {  in panel_connector_get_modes()
155 		mode->type = DRM_MODE_TYPE_DRIVER;  in panel_connector_get_modes()
157 		if (timings->native_mode == i)  in panel_connector_get_modes()
158 			mode->type |= DRM_MODE_TYPE_PREFERRED;  in panel_connector_get_modes()
171 	return panel_connector->encoder;  in panel_connector_best_encoder()
194 	panel_connector = devm_kzalloc(dev->dev, sizeof(*panel_connector),  in panel_connector_create()
199 	panel_connector->encoder = encoder;  in panel_connector_create()
200 	panel_connector->mod = mod;  in panel_connector_create()
202 	connector = &panel_connector->base;  in panel_connector_create()
208 	connector->interlace_allowed = 0;  in panel_connector_create()
209 	connector->doublescan_allowed = 0;  in panel_connector_create()
229 	struct tilcdc_drm_private *priv = dev->dev_private;  in panel_modeset_init()
235 		return -ENOMEM;  in panel_modeset_init()
239 		return -ENOMEM;  in panel_modeset_init()
241 	priv->encoders[priv->num_encoders++] = encoder;  in panel_modeset_init()
242 	priv->connectors[priv->num_connectors++] = connector;  in panel_modeset_init()
244 	tilcdc_crtc_set_panel_info(priv->crtc,  in panel_modeset_init()
245 				   to_panel_encoder(encoder)->mod->info);  in panel_modeset_init()
270 	info_np = of_get_child_by_name(np, "panel-info");  in of_get_panel_info()
272 		pr_err("%s: could not find panel-info node\n", __func__);  in of_get_panel_info()
280 	ret |= of_property_read_u32(info_np, "ac-bias", &info->ac_bias);  in of_get_panel_info()
281 	ret |= of_property_read_u32(info_np, "ac-bias-intrpt", &info->ac_bias_intrpt);  in of_get_panel_info()
282 	ret |= of_property_read_u32(info_np, "dma-burst-sz", &info->dma_burst_sz);  in of_get_panel_info()
283 	ret |= of_property_read_u32(info_np, "bpp", &info->bpp);  in of_get_panel_info()
284 	ret |= of_property_read_u32(info_np, "fdd", &info->fdd);  in of_get_panel_info()
285 	ret |= of_property_read_u32(info_np, "sync-edge", &info->sync_edge);  in of_get_panel_info()
286 	ret |= of_property_read_u32(info_np, "sync-ctrl", &info->sync_ctrl);  in of_get_panel_info()
287 	ret |= of_property_read_u32(info_np, "raster-order", &info->raster_order);  in of_get_panel_info()
288 	ret |= of_property_read_u32(info_np, "fifo-th", &info->fifo_th);  in of_get_panel_info()
291 	info->tft_alt_mode      = of_property_read_bool(info_np, "tft-alt-mode");  in of_get_panel_info()
292 	info->invert_pxl_clk    = of_property_read_bool(info_np, "invert-pxl-clk");  in of_get_panel_info()
295 		pr_err("%s: error reading panel-info properties\n", __func__);  in of_get_panel_info()
307 	struct device_node *node = pdev->dev.of_node;  in panel_probe()
308 	struct backlight_device *backlight;  in panel_probe()  local
316 		dev_err(&pdev->dev, "device-tree data is missing\n");  in panel_probe()
317 		return -ENXIO;  in panel_probe()
320 	panel_mod = devm_kzalloc(&pdev->dev, sizeof(*panel_mod), GFP_KERNEL);  in panel_probe()
322 		return -ENOMEM;  in panel_probe()
324 	backlight = devm_of_find_backlight(&pdev->dev);  in panel_probe()
325 	if (IS_ERR(backlight))  in panel_probe()
326 		return PTR_ERR(backlight);  in panel_probe()
327 	panel_mod->backlight = backlight;  in panel_probe()
329 	panel_mod->enable_gpio = devm_gpiod_get_optional(&pdev->dev, "enable",  in panel_probe()
331 	if (IS_ERR(panel_mod->enable_gpio)) {  in panel_probe()
332 		ret = PTR_ERR(panel_mod->enable_gpio);  in panel_probe()
333 		dev_err(&pdev->dev, "failed to request enable GPIO\n");  in panel_probe()
337 	if (panel_mod->enable_gpio)  in panel_probe()
338 		dev_info(&pdev->dev, "found enable GPIO\n");  in panel_probe()
340 	mod = &panel_mod->base;  in panel_probe()
341 	pdev->dev.platform_data = mod;  in panel_probe()
345 	pinctrl = devm_pinctrl_get_select_default(&pdev->dev);  in panel_probe()
347 		dev_warn(&pdev->dev, "pins are not configured\n");  in panel_probe()
349 	panel_mod->timings = of_get_display_timings(node);  in panel_probe()
350 	if (!panel_mod->timings) {  in panel_probe()
351 		dev_err(&pdev->dev, "could not get panel timings\n");  in panel_probe()
352 		ret = -EINVAL;  in panel_probe()
356 	panel_mod->info = of_get_panel_info(node);  in panel_probe()
357 	if (!panel_mod->info) {  in panel_probe()
358 		dev_err(&pdev->dev, "could not get panel info\n");  in panel_probe()
359 		ret = -EINVAL;  in panel_probe()
366 	display_timings_release(panel_mod->timings);  in panel_probe()
372 	if (panel_mod->backlight)  in panel_probe()
373 		put_device(&panel_mod->backlight->dev);  in panel_probe()
379 	struct tilcdc_module *mod = dev_get_platdata(&pdev->dev);  in panel_remove()
381 	struct backlight_device *backlight = panel_mod->backlight;  in panel_remove()  local
383 	if (backlight)  in panel_remove()
384 		put_device(&backlight->dev);  in panel_remove()
386 	display_timings_release(panel_mod->timings);  in panel_remove()
389 	kfree(panel_mod->info);  in panel_remove()
401 		.name = "tilcdc-panel",