davinci: VPIF: add DT support

index 5104cc0ee40e..9f8f41c0f251 100644
@@ -193,7 +193,10 @@ static int vpif_start_streaming(struct vb2_queue *vq, unsigned int count)
 		}
 	}
 
+	spin_unlock_irqrestore(&common->irqlock, flags);
 	ret = v4l2_subdev_call(ch->sd, video, s_stream, 1);
+	spin_lock_irqsave(&common->irqlock, flags);
+
 	if (ret && ret != -ENOIOCTLCMD && ret != -ENODEV) {
 		vpif_dbg(1, debug, "stream on failed in subdev\n");
 		goto err;

index 0380cf2e5775..528b30d52208 100644
@@ -420,7 +420,8 @@ EXPORT_SYMBOL(vpif_channel_getfid);
 
 static int vpif_probe(struct platform_device *pdev)
 {
-	static struct resource	*res;
+	static struct resource	*res, *res_irq;
+	struct platform_device *pdev_capture, *pdev_display;
 
 	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 	vpif_base = devm_ioremap_resource(&pdev->dev, res);

@@ -432,6 +433,42 @@ static int vpif_probe(struct platform_device *pdev)
 
 	spin_lock_init(&vpif_lock);
 	dev_info(&pdev->dev, "vpif probe success\n");
+
+	if (!pdev->dev.of_node)
+		return 0;
+
+	/*
+	 * For DT platforms, manually create platform_devices for
+	 * capture/display drivers.
+	 */
+	res_irq = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
+	if (!res_irq) {
+		dev_warn(&pdev->dev, "Missing IRQ resource.\n");
+		return -EINVAL;
+	}
+
+	pdev_capture = devm_kzalloc(&pdev->dev, sizeof(*pdev_capture),
+				    GFP_KERNEL);
+	pdev_capture->name = "vpif_capture";
+	pdev_capture->id = -1;
+	pdev_capture->resource = res_irq;
+	pdev_capture->num_resources = 1;
+	pdev_capture->dev.dma_mask = pdev->dev.dma_mask;
+	pdev_capture->dev.coherent_dma_mask = pdev->dev.coherent_dma_mask;
+	pdev_capture->dev.parent = &pdev->dev;
+	platform_device_register(pdev_capture);
+
+	pdev_display = devm_kzalloc(&pdev->dev, sizeof(*pdev_display),
+				    GFP_KERNEL);
+	pdev_display->name = "vpif_display";
+	pdev_display->id = -1;
+	pdev_display->resource = res_irq;
+	pdev_display->num_resources = 1;
+	pdev_display->dev.dma_mask = pdev->dev.dma_mask;
+	pdev_display->dev.coherent_dma_mask = pdev->dev.coherent_dma_mask;
+	pdev_display->dev.parent = &pdev->dev;
+	platform_device_register(pdev_display);
+
 	return 0;
 }
 

@@ -464,8 +501,17 @@ static const struct dev_pm_ops vpif_pm = {
 #define vpif_pm_ops NULL
 #endif
 
+#if IS_ENABLED(CONFIG_OF)
+static const struct of_device_id vpif_of_match[] = {
+	{ .compatible = "ti,da850-vpif", },
+	{ /* sentinel */ },
+};
+MODULE_DEVICE_TABLE(of, vpif_of_match);
+#endif
+
 static struct platform_driver vpif_driver = {
 	.driver = {
+		.of_match_table = of_match_ptr(vpif_of_match),
 		.name	= "vpif",
 		.pm	= vpif_pm_ops,
 	},

index 9f8f41c0f251..a83df07e4051 100644
@@ -45,6 +45,7 @@ module_param(debug, int, 0644);
 MODULE_PARM_DESC(debug, "Debug level 0-1");
 
 #define VPIF_DRIVER_NAME	"vpif_capture"
+MODULE_ALIAS("platform:" VPIF_DRIVER_NAME);
 
 /* global variables */
 static struct vpif_device vpif_obj = { {NULL} };

@@ -1438,6 +1439,11 @@ static __init int vpif_probe(struct platform_device *pdev)
 	int res_idx = 0;
 	int i, err;
 
+	if (!pdev->dev.platform_data) {
+		dev_warn(&pdev->dev, "Missing platform data.  Giving up.\n");
+		return -EINVAL;
+	}
+
 	vpif_dev = &pdev->dev;
 
 	err = initialize_vpif();

index 75b27233ec2f..7f632b757d32 100644
@@ -42,6 +42,7 @@ module_param(debug, int, 0644);
 MODULE_PARM_DESC(debug, "Debug level 0-1");
 
 #define VPIF_DRIVER_NAME	"vpif_display"
+MODULE_ALIAS("platform:" VPIF_DRIVER_NAME);
 
 /* Is set to 1 in case of SDTV formats, 2 in case of HDTV formats. */
 static int ycmux_mode;

@@ -1249,6 +1250,11 @@ static __init int vpif_probe(struct platform_device *pdev)
 	int res_idx = 0;
 	int i, err;
 
+	if (!pdev->dev.platform_data) {
+		dev_warn(&pdev->dev, "Missing platform data.  Giving up.\n");
+		return -EINVAL;
+	}
+
 	vpif_dev = &pdev->dev;
 	err = initialize_vpif();
 

index a83df07e4051..4e363da2c21f 100644
@@ -26,6 +26,8 @@
 #include <linux/slab.h>
 
 #include <media/v4l2-ioctl.h>
+#include <media/v4l2-of.h>
+#include <media/i2c/tvp514x.h>
 
 #include "vpif.h"
 #include "vpif_capture.h"

@@ -651,6 +653,10 @@ static int vpif_input_to_subdev(
 
 	vpif_dbg(2, debug, "vpif_input_to_subdev\n");
 
+	if (!chan_cfg)
+		return -1;
+	if (input_index >= chan_cfg->input_count)
+		return -1;
 	subdev_name = chan_cfg->inputs[input_index].subdev_name;
 	if (subdev_name == NULL)
 		return -1;

@@ -658,7 +664,7 @@ static int vpif_input_to_subdev(
 	/* loop through the sub device list to get the sub device info */
 	for (i = 0; i < vpif_cfg->subdev_count; i++) {
 		subdev_info = &vpif_cfg->subdev_info[i];
-		if (!strcmp(subdev_info->name, subdev_name))
+		if (subdev_info && !strcmp(subdev_info->name, subdev_name))
 			return i;
 	}
 	return -1;

@@ -1328,6 +1334,21 @@ static int vpif_async_bound(struct v4l2_async_notifier *notifier,
 {
 	int i;
 
+	for (i = 0; i < vpif_obj.config->asd_sizes[0]; i++) {
+		struct v4l2_async_subdev *_asd = vpif_obj.config->asd[i];
+		const struct device_node *node = _asd->match.of.node;
+
+		if (node == subdev->of_node) {
+			vpif_obj.sd[i] = subdev;
+			vpif_obj.config->chan_config->inputs[i].subdev_name =
+				(char *)subdev->of_node->full_name;
+			vpif_dbg(2, debug,
+				 "%s: setting input %d subdev_name = %s\n",
+				 __func__, i, subdev->of_node->full_name);
+			return 0;
+		}
+	}
+
 	for (i = 0; i < vpif_obj.config->subdev_count; i++)
 		if (!strcmp(vpif_obj.config->subdev_info[i].name,
 			    subdev->name)) {

@@ -1423,6 +1444,118 @@ static int vpif_async_complete(struct v4l2_async_notifier *notifier)
 	return vpif_probe_complete();
 }
 
+static struct vpif_capture_config *
+vpif_capture_get_pdata(struct platform_device *pdev)
+{
+	struct device_node *endpoint = NULL;
+	struct v4l2_of_endpoint bus_cfg;
+	struct vpif_capture_config *pdata;
+	struct vpif_subdev_info *sdinfo;
+	struct vpif_capture_chan_config *chan;
+	unsigned int i;
+
+	dev_dbg(&pdev->dev, "vpif_get_pdata\n");
+
+	/*
+	 * DT boot: OF node from parent device contains
+	 * video ports & endpoints data.
+	 */
+	if (pdev->dev.parent && pdev->dev.parent->of_node)
+		pdev->dev.of_node = pdev->dev.parent->of_node;
+	if (!IS_ENABLED(CONFIG_OF) || !pdev->dev.of_node)
+		return pdev->dev.platform_data;
+
+	pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL);
+	if (!pdata)
+		return NULL;
+	pdata->subdev_info =
+		devm_kzalloc(&pdev->dev, sizeof(*pdata->subdev_info) *
+			     VPIF_CAPTURE_NUM_CHANNELS, GFP_KERNEL);
+
+	if (!pdata->subdev_info)
+		return NULL;
+
+	for (i = 0; i < VPIF_CAPTURE_NUM_CHANNELS; i++) {
+		struct device_node *rem;
+		unsigned int flags;
+		int err;
+
+		endpoint = of_graph_get_next_endpoint(pdev->dev.of_node,
+						      endpoint);
+		if (!endpoint)
+			break;
+
+		sdinfo = &pdata->subdev_info[i];
+		chan = &pdata->chan_config[i];
+		chan->inputs = devm_kzalloc(&pdev->dev,
+					    sizeof(*chan->inputs) *
+					    VPIF_CAPTURE_NUM_CHANNELS,
+					    GFP_KERNEL);
+
+		chan->input_count++;
+		chan->inputs[i].input.type = V4L2_INPUT_TYPE_CAMERA;
+		chan->inputs[i].input.std = V4L2_STD_ALL;
+		chan->inputs[i].input.capabilities = V4L2_IN_CAP_STD;
+
+		/*
+		 * FIXME: need a new property for input/output routing?
+		 * All known boards are using ch0:composite ch1: s-video.
+		 */
+		if (i == 0)
+			chan->inputs[i].input_route = INPUT_CVBS_VI2B;
+		else
+			chan->inputs[i].input_route = INPUT_SVIDEO_VI2C_VI1C;
+		chan->inputs[i].output_route = OUTPUT_10BIT_422_EMBEDDED_SYNC;
+
+		err = v4l2_of_parse_endpoint(endpoint, &bus_cfg);
+		if (err) {
+			dev_err(&pdev->dev, "Could not parse the endpoint\n");
+			goto done;
+		}
+		dev_dbg(&pdev->dev, "Endpoint %s, bus_width = %d\n",
+			endpoint->full_name, bus_cfg.bus.parallel.bus_width);
+		flags = bus_cfg.bus.parallel.flags;
+
+		if (flags & V4L2_MBUS_HSYNC_ACTIVE_HIGH)
+			chan->vpif_if.hd_pol = 1;
+
+		if (flags & V4L2_MBUS_VSYNC_ACTIVE_HIGH)
+			chan->vpif_if.vd_pol = 1;
+
+		chan->vpif_if.if_type = VPIF_IF_BT656;
+		rem = of_graph_get_remote_port_parent(endpoint);
+		if (!rem) {
+			dev_dbg(&pdev->dev, "Remote device at %s not found\n",
+				endpoint->full_name);
+			goto done;
+		}
+
+		dev_dbg(&pdev->dev, "Remote device %s, %s found\n",
+			rem->name, rem->full_name);
+		sdinfo->name = rem->full_name;
+
+		pdata->asd[i] = devm_kzalloc(&pdev->dev,
+					     sizeof(struct v4l2_async_subdev),
+					     GFP_KERNEL);
+		if (!pdata->asd[i]) {
+			of_node_put(rem);
+			pdata = NULL;
+			goto done;
+		}
+
+		pdata->asd[i]->match_type = V4L2_ASYNC_MATCH_OF;
+		pdata->asd[i]->match.of.node = rem;
+		of_node_put(rem);
+	}
+
+done:
+	pdata->asd_sizes[0] = i;
+	pdata->subdev_count = i;
+	pdata->card_name = "DA850/OMAP-L138 Video Capture";
+
+	return pdata;
+}
+
 /**
  * vpif_probe : This function probes the vpif capture driver
  * @pdev: platform device pointer

@@ -1439,6 +1572,7 @@ static __init int vpif_probe(struct platform_device *pdev)
 	int res_idx = 0;
 	int i, err;
 
+	pdev->dev.platform_data = vpif_capture_get_pdata(pdev);
 	if (!pdev->dev.platform_data) {
 		dev_warn(&pdev->dev, "Missing platform data.  Giving up.\n");
 		return -EINVAL;

@@ -1481,7 +1615,7 @@ static __init int vpif_probe(struct platform_device *pdev)
 		goto vpif_unregister;
 	}
 
-	if (!vpif_obj.config->asd_sizes) {
+	if (!vpif_obj.config->asd_sizes[0]) {
 		i2c_adap = i2c_get_adapter(1);
 		for (i = 0; i < subdev_count; i++) {
 			subdevdata = &vpif_obj.config->subdev_info[i];

index 3cb1704a0650..4ee3b41975db 100644
@@ -65,14 +65,14 @@ struct vpif_display_config {
 
 struct vpif_input {
 	struct v4l2_input input;
-	const char *subdev_name;
+	char *subdev_name;
 	u32 input_route;
 	u32 output_route;
 };
 
 struct vpif_capture_chan_config {
 	struct vpif_interface vpif_if;
-	const struct vpif_input *inputs;
+	struct vpif_input *inputs;
 	int input_count;
 };
 

@@ -83,7 +83,8 @@ struct vpif_capture_config {
 	struct vpif_subdev_info *subdev_info;
 	int subdev_count;
 	const char *card_name;
-	struct v4l2_async_subdev **asd;	/* Flat array, arranged in groups */
-	int *asd_sizes;		/* 0-terminated array of asd group sizes */
+
+	struct v4l2_async_subdev *asd[VPIF_CAPTURE_MAX_CHANNELS];
+	int asd_sizes[VPIF_CAPTURE_MAX_CHANNELS];
 };
 #endif /* _VPIF_TYPES_H */