[media] au0828: remove forced dependency of VIDEO_AU0828 on VIDEO_V4L2

This patch removes the dependendency of VIDEO_AU0828 on VIDEO_V4L2 by
creating a new Kconfig option, VIDEO_AU0828_V4L2, which enables analog
video capture support and depends on VIDEO_V4L2 itself.
With VIDEO_AU0828_V4L2 disabled, the driver will only support digital
television and will not depend on the v4l2-core. With VIDEO_AU0828_V4L2
enabled, the driver will be built with the analog v4l2 support included.
By default, the VIDEO_AU0828_V4L2 option will be set to Y, so as to
preserve the original behavior.

Signed-off-by: Michael Krufky <mkrufky@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

6 files changed, 41 insertions, 5 deletions

diff --git a/drivers/media/usb/au0828/Kconfig b/drivers/media/usb/au0828/Kconfig
index 1766c0ce93be..953a37c613b1 100644
--- a/drivers/media/usb/au0828/Kconfig
+++ b/drivers/media/usb/au0828/Kconfig
@@ -1,17 +1,28 @@
 
 config VIDEO_AU0828
         tristate "Auvitek AU0828 support"
-        depends on I2C && INPUT && DVB_CORE && USB && VIDEO_V4L2
+        depends on I2C && INPUT && DVB_CORE && USB
         select I2C_ALGOBIT
         select VIDEO_TVEEPROM
         select VIDEOBUF_VMALLOC
         select DVB_AU8522_DTV if MEDIA_SUBDRV_AUTOSELECT
-        select DVB_AU8522_V4L if MEDIA_SUBDRV_AUTOSELECT
         select MEDIA_TUNER_XC5000 if MEDIA_SUBDRV_AUTOSELECT
         select MEDIA_TUNER_MXL5007T if MEDIA_SUBDRV_AUTOSELECT
         select MEDIA_TUNER_TDA18271 if MEDIA_SUBDRV_AUTOSELECT
         ---help---
-          This is a video4linux driver for Auvitek's USB device.
+          This is a hybrid analog/digital tv capture driver for
+          Auvitek's AU0828 USB device.
 
           To compile this driver as a module, choose M here: the
           module will be called au0828
+
+config VIDEO_AU0828_V4L2
+        bool "Auvitek AU0828 v4l2 analog video support"
+        depends on VIDEO_AU0828 && VIDEO_V4L2
+        select DVB_AU8522_V4L if MEDIA_SUBDRV_AUTOSELECT
+        default y
+        ---help---
+          This is a video4linux driver for Auvitek's USB device.
+
+          Choose Y here to include support for v4l2 analog video
+          capture within the au0828 driver.
diff --git a/drivers/media/usb/au0828/Makefile b/drivers/media/usb/au0828/Makefile
index 98cc20cc0ffb..be3bdf698022 100644
--- a/drivers/media/usb/au0828/Makefile
+++ b/drivers/media/usb/au0828/Makefile
@@ -1,4 +1,8 @@
-au0828-objs     := au0828-core.o au0828-i2c.o au0828-cards.o au0828-dvb.o au0828-video.o au0828-vbi.o
+au0828-objs     := au0828-core.o au0828-i2c.o au0828-cards.o au0828-dvb.o
+
+ifeq ($(CONFIG_VIDEO_AU0828_V4L2),y)
+  au0828-objs   += au0828-video.o au0828-vbi.o
+endif
 
 obj-$(CONFIG_VIDEO_AU0828) += au0828.o
 
diff --git a/drivers/media/usb/au0828/au0828-cards.c b/drivers/media/usb/au0828/au0828-cards.c
index cf309d8102c0..7b5b7420066d 100644
--- a/drivers/media/usb/au0828/au0828-cards.c
+++ b/drivers/media/usb/au0828/au0828-cards.c
@@ -188,9 +188,11 @@ static void hauppauge_eeprom(struct au0828_dev *dev, u8 *eeprom_data)
 void au0828_card_setup(struct au0828_dev *dev)
 {
         static u8 eeprom[256];
+#ifdef CONFIG_VIDEO_AU0828_V4L2
         struct tuner_setup tun_setup;
         struct v4l2_subdev *sd;
         unsigned int mode_mask = T_ANALOG_TV;
+#endif
 
         dprintk(1, "%s()\n", __func__);
 
@@ -211,6 +213,7 @@ void au0828_card_setup(struct au0828_dev *dev)
                 break;
         }
 
+#ifdef CONFIG_VIDEO_AU0828_V4L2
         if (AUVI_INPUT(0).type != AU0828_VMUX_UNDEFINED) {
                 /* Load the analog demodulator driver (note this would need to
                    be abstracted out if we ever need to support a different
@@ -236,6 +239,7 @@ void au0828_card_setup(struct au0828_dev *dev)
                 v4l2_device_call_all(&dev->v4l2_dev, 0, tuner, s_type_addr,
                                      &tun_setup);
         }
+#endif
 }
 
 /*
diff --git a/drivers/media/usb/au0828/au0828-core.c b/drivers/media/usb/au0828/au0828-core.c
index 745a80a798c8..1e6f40ef1c6b 100644
--- a/drivers/media/usb/au0828/au0828-core.c
+++ b/drivers/media/usb/au0828/au0828-core.c
@@ -134,13 +134,17 @@ static void au0828_usb_disconnect(struct usb_interface *interface)
         /* Digital TV */
         au0828_dvb_unregister(dev);
 
+#ifdef CONFIG_VIDEO_AU0828_V4L2
         if (AUVI_INPUT(0).type != AU0828_VMUX_UNDEFINED)
                 au0828_analog_unregister(dev);
+#endif
 
         /* I2C */
         au0828_i2c_unregister(dev);
 
+#ifdef CONFIG_VIDEO_AU0828_V4L2
         v4l2_device_unregister(&dev->v4l2_dev);
+#endif
 
         usb_set_intfdata(interface, NULL);
 
@@ -155,7 +159,10 @@ static void au0828_usb_disconnect(struct usb_interface *interface)
 static int au0828_usb_probe(struct usb_interface *interface,
         const struct usb_device_id *id)
 {
-        int ifnum, retval;
+        int ifnum;
+#ifdef CONFIG_VIDEO_AU0828_V4L2
+        int retval;
+#endif
         struct au0828_dev *dev;
         struct usb_device *usbdev = interface_to_usbdev(interface);
 
@@ -194,6 +201,7 @@ static int au0828_usb_probe(struct usb_interface *interface,
         dev->usbdev = usbdev;
         dev->boardnr = id->driver_info;
 
+#ifdef CONFIG_VIDEO_AU0828_V4L2
         /* Create the v4l2_device */
         retval = v4l2_device_register(&interface->dev, &dev->v4l2_dev);
         if (retval) {
@@ -203,6 +211,7 @@ static int au0828_usb_probe(struct usb_interface *interface,
                 kfree(dev);
                 return -EIO;
         }
+#endif
 
         /* Power Up the bridge */
         au0828_write(dev, REG_600, 1 << 4);
@@ -216,9 +225,11 @@ static int au0828_usb_probe(struct usb_interface *interface,
         /* Setup */
         au0828_card_setup(dev);
 
+#ifdef CONFIG_VIDEO_AU0828_V4L2
         /* Analog TV */
         if (AUVI_INPUT(0).type != AU0828_VMUX_UNDEFINED)
                 au0828_analog_register(dev, interface);
+#endif
 
         /* Digital TV */
         au0828_dvb_register(dev);
diff --git a/drivers/media/usb/au0828/au0828-i2c.c b/drivers/media/usb/au0828/au0828-i2c.c
index 4ded17fe1957..20d69b565255 100644
--- a/drivers/media/usb/au0828/au0828-i2c.c
+++ b/drivers/media/usb/au0828/au0828-i2c.c
@@ -378,7 +378,11 @@ int au0828_i2c_register(struct au0828_dev *dev)
 
         dev->i2c_adap.algo = &dev->i2c_algo;
         dev->i2c_adap.algo_data = dev;
+#ifdef CONFIG_VIDEO_AU0828_V4L2
         i2c_set_adapdata(&dev->i2c_adap, &dev->v4l2_dev);
+#else
+        i2c_set_adapdata(&dev->i2c_adap, dev);
+#endif
         i2c_add_adapter(&dev->i2c_adap);
 
         dev->i2c_client.adapter = &dev->i2c_adap;
diff --git a/drivers/media/usb/au0828/au0828.h b/drivers/media/usb/au0828/au0828.h
index 66a56ef7bbe4..e579ff69ca4a 100644
--- a/drivers/media/usb/au0828/au0828.h
+++ b/drivers/media/usb/au0828/au0828.h
@@ -199,8 +199,10 @@ struct au0828_dev {
         struct au0828_dvb               dvb;
         struct work_struct              restart_streaming;
 
+#ifdef CONFIG_VIDEO_AU0828_V4L2
         /* Analog */
         struct v4l2_device v4l2_dev;
+#endif
         int users;
         unsigned int resources; /* resources in use */
         struct video_device *vdev;