Revert "[media] staging: media: go7007: Adlink MPG24 board issues"

This patch were applied by mistake, as it were rejected by Don, who
requested it to be broken into per-change patches.

This reverts commit 0982db2.

Cc: Dan Carpenter <dan.carpenter@oracle.com>
Cc: Volokh Konstantin <volokh84@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

drivers/staging/media/go7007/README

@@ -5,24 +5,6 @@ Todo:
 	  and added to the build.
 	- testing?
 	- handle churn in v4l layer.
-	- Some features for wis-tw2804 subdev control (comb filter,motion detector sensitive & mask,more over...)
-	- go7007-v4l2.c need rewrite with new v4l2 style without nonstandart IO controls (set detector & bitrate)
-
-05/05/2012 3.4.0-rc+:
-Changes:
-  - When go7007 reset device, i2c was not worked (need rewrite GPIO5)
-  - As wis2804 has i2c_addr=0x00/*really*/, so Need set I2C_CLIENT_TEN flag for validity
-  - Some main nonzero initialization, rewrites with kzalloc instead kmalloc
-  - STATUS_SHUTDOWN was placed in incorrect place, so if firmware wasn`t loaded, we
-    failed v4l2_device_unregister with kernel panic (OOPS)
-  - Some new v4l2 style features as call_all(...s_stream...) for using subdev calls
-  - wis-tw2804.ko module code was incompatible with 3.4.x branch in initialization v4l2_subdev parts.
-    now i2c_get_clientdata(...) contains v4l2_subdev struct instead non standart wis_tw2804 struct
-
-Adds:
-  - Additional chipset wis2804 controls with: gain,auto gain,inputs[0,1],color kill,chroma gain,gain balances,
-    for all 4 channels (from tw2804.pdf)
-  - Power control for each 4 ADC up when s_stream(...,1), down otherwise in wis-tw2804 module
 
 Please send patchs to Greg Kroah-Hartman <greg@kroah.com> and Cc: Ross
 Cohen <rcohen@snurgle.org> as well.

drivers/staging/media/go7007/go7007-driver.c

@@ -173,11 +173,6 @@ static int go7007_init_encoder(struct go7007 *go)
 		go7007_write_addr(go, 0x3c82, 0x0001);
 		go7007_write_addr(go, 0x3c80, 0x00fe);
 	}
-	if (go->board_id == GO7007_BOARDID_ADLINK_MPG24) {
-		/* set GPIO5 to be an output, currently low */
-		go7007_write_addr(go, 0x3c82, 0x0000);
-		go7007_write_addr(go, 0x3c80, 0x00df);
-	}
 	return 0;
 }
 
@@ -197,23 +192,17 @@ int go7007_reset_encoder(struct go7007 *go)
 /*
  * Attempt to instantiate an I2C client by ID, probably loading a module.
  */
-static int init_i2c_module(struct i2c_adapter *adapter, const struct go_i2c *const i2c)
+static int init_i2c_module(struct i2c_adapter *adapter, const char *type,
+			   int addr)
 {
 	struct go7007 *go = i2c_get_adapdata(adapter);
 	struct v4l2_device *v4l2_dev = &go->v4l2_dev;
-	struct i2c_board_info info;
-
-	memset(&info, 0, sizeof(info));
-	strlcpy(info.type, i2c->type, sizeof(info.type));
-	info.addr = i2c->addr;
 
-	if (i2c->id == I2C_DRIVERID_WIS_TW2804)
-		info.flags |= I2C_CLIENT_TEN;
-	if (v4l2_i2c_new_subdev_board(v4l2_dev, adapter, &info, NULL))
+	if (v4l2_i2c_new_subdev(v4l2_dev, adapter, type, addr, NULL))
 		return 0;
 
-	printk(KERN_INFO "go7007: probing for module i2c:%s failed\n", i2c->type);
-	return -EINVAL;
+	printk(KERN_INFO "go7007: probing for module i2c:%s failed\n", type);
+	return -1;
 }
 
 /*
@@ -249,7 +238,9 @@ int go7007_register_encoder(struct go7007 *go)
 	}
 	if (go->i2c_adapter_online) {
 		for (i = 0; i < go->board_info->num_i2c_devs; ++i)
-			init_i2c_module(&go->i2c_adapter, &go->board_info->i2c_devs[i]);
+			init_i2c_module(&go->i2c_adapter,
+					go->board_info->i2c_devs[i].type,
+					go->board_info->i2c_devs[i].addr);
 		if (go->board_id == GO7007_BOARDID_ADLINK_MPG24)
 			i2c_clients_command(&go->i2c_adapter,
 				DECODER_SET_CHANNEL, &go->channel_number);
@@ -580,7 +571,7 @@ struct go7007 *go7007_alloc(struct go7007_board_info *board, struct device *dev)
 	struct go7007 *go;
 	int i;
 
-	go = kzalloc(sizeof(struct go7007), GFP_KERNEL);
+	go = kmalloc(sizeof(struct go7007), GFP_KERNEL);
 	if (go == NULL)
 		return NULL;
 	go->dev = dev;

drivers/staging/media/go7007/go7007-priv.h

@@ -88,7 +88,7 @@ struct go7007_board_info {
 	int audio_bclk_div;
 	int audio_main_div;
 	int num_i2c_devs;
-	struct go_i2c {
+	struct {
 		const char *type;
 		int id;
 		int addr;

drivers/staging/media/go7007/go7007-usb.c

@@ -1110,6 +1110,9 @@ static int go7007_usb_probe(struct usb_interface *intf,
 			} else {
 				u16 channel;
 
+				/* set GPIO5 to be an output, currently low */
+				go7007_write_addr(go, 0x3c82, 0x0000);
+				go7007_write_addr(go, 0x3c80, 0x00df);
 				/* read channel number from GPIO[1:0] */
 				go7007_read_addr(go, 0x3c81, &channel);
 				channel &= 0x3;
@@ -1242,6 +1245,7 @@ static void go7007_usb_disconnect(struct usb_interface *intf)
 	struct urb *vurb, *aurb;
 	int i;
 
+	go->status = STATUS_SHUTDOWN;
 	usb_kill_urb(usb->intr_urb);
 
 	/* Free USB-related structs */
@@ -1265,7 +1269,6 @@ static void go7007_usb_disconnect(struct usb_interface *intf)
 	kfree(go->hpi_context);
 
 	go7007_remove(go);
-	go->status = STATUS_SHUTDOWN;
 }
 
 static struct usb_driver go7007_usb_driver = {

drivers/staging/media/go7007/go7007-v4l2.c

@@ -98,7 +98,7 @@ static int go7007_open(struct file *file)
 
 	if (go->status != STATUS_ONLINE)
 		return -EBUSY;
-	gofh = kzalloc(sizeof(struct go7007_file), GFP_KERNEL);
+	gofh = kmalloc(sizeof(struct go7007_file), GFP_KERNEL);
 	if (gofh == NULL)
 		return -ENOMEM;
 	++go->ref_count;
@@ -953,7 +953,6 @@ static int vidioc_streamon(struct file *file, void *priv,
 	}
 	mutex_unlock(&go->hw_lock);
 	mutex_unlock(&gofh->lock);
-	call_all(&go->v4l2_dev, video, s_stream, 1);
 
 	return retval;
 }
@@ -969,7 +968,6 @@ static int vidioc_streamoff(struct file *file, void *priv,
 	mutex_lock(&gofh->lock);
 	go7007_streamoff(go);
 	mutex_unlock(&gofh->lock);
-	call_all(&go->v4l2_dev, video, s_stream, 0);
 
 	return 0;
 }
@@ -1834,6 +1832,5 @@ void go7007_v4l2_remove(struct go7007 *go)
 	mutex_unlock(&go->hw_lock);
 	if (go->video_dev)
 		video_unregister_device(go->video_dev);
-	if (go->status != STATUS_SHUTDOWN)
-		v4l2_device_unregister(&go->v4l2_dev);
+	v4l2_device_unregister(&go->v4l2_dev);
 }