V4L/DVB (6134): tuner: alter build to produce separate modules

Break tuner.ko into separate modules. This was a quick change -
Tuner sub-drivers are still static-linked to tuner.ko, this will
change after using dvb_attach and removing the probing functions.

After this change, one can deselect undesired tuner sub-drivers via Kconfig.

Signed-off-by: Michael Krufky <[e-mail]>
Acked-by: Hans Verkuil <[e-mail]>
Acked-by: Mike Isely <[e-mail]>
Acked-by: Steven Toth <[e-mail]>
Acked-by: Patrick Boettcher <[e-mail]>
Acked-by: Jarod Wilson <[e-mail]>
Acked-by: Trent Piepho <[e-mail]>
Signed-off-by: Mauro Carvalho Chehab <[e-mail]>

drivers/media/Kconfig

···
 config VIDEO_TUNER
 	tristate
 	depends on I2C
+	select TUNER_MT20XX if !VIDEO_TUNER_CUSTOMIZE
+	select TUNER_TDA8290 if !VIDEO_TUNER_CUSTOMIZE
+	select TUNER_TEA5761 if !VIDEO_TUNER_CUSTOMIZE
+	select TUNER_TEA5767 if !VIDEO_TUNER_CUSTOMIZE
+	select TUNER_SIMPLE if !VIDEO_TUNER_CUSTOMIZE
+
+menuconfig VIDEO_TUNER_CUSTOMIZE
+	bool "Customize analog tuner modules to build"
+	depends on VIDEO_TUNER
+	help
+	  This allows the user to deselect tuner drivers unnecessary
+	  for their hardware from the build. Use this option with care
+	  as deselecting tuner drivers which are in fact necessary will
+	  result in V4L devices which cannot be tuned due to lack of
+	  driver support
+
+	  If unsure say N.
+
+if VIDEO_TUNER_CUSTOMIZE
+
+config TUNER_MT20XX
+	tristate "Microtune 2032 / 2050 tuners"
+	depends on I2C
+	default m if VIDEO_TUNER_CUSTOMIZE
+	help
+	  Say Y here to include support for the MT2032 / MT2050 tuner.
+
+config TUNER_TDA8290
+	tristate "TDA 8290+8275(a) tuner combo"
+	depends on I2C
+	default m if VIDEO_TUNER_CUSTOMIZE
+	help
+	  Say Y here to include support for Philips TDA8290+8275(a) tuner.
+
+config TUNER_TEA5761
+	tristate "TEA 5761 radio tuner (EXPERIMENTAL)"
+	depends on I2C && EXPERIMENTAL
+	default m if VIDEO_TUNER_CUSTOMIZE
+	help
+	  Say Y here to include support for the Philips TEA5761 radio tuner.
+
+config TUNER_TEA5767
+	tristate "TEA 5767 radio tuner"
+	depends on I2C
+	default m if VIDEO_TUNER_CUSTOMIZE
+	help
+	  Say Y here to include support for the Philips TEA5767 radio tuner.
+
+config TUNER_SIMPLE
+	tristate "Simple tuner support"
+	depends on I2C
+	default m if VIDEO_TUNER_CUSTOMIZE
+	help
+	  Say Y here to include support for various simple tuners.
+
+endif # VIDEO_TUNER_CUSTOMIZE
 
 config VIDEO_BUF
 	depends on PCI

drivers/media/video/Kconfig

···
 	  Say Y here to include support for Philips SAB3036 compatible tuners.
 	  If in doubt, say N.
 
-config TUNER_TEA5761
-	bool "TEA 5761 radio tuner (EXPERIMENTAL)"
-	depends on EXPERIMENTAL
-	depends on I2C
-	select VIDEO_TUNER
-	help
-	  Say Y here to include support for Philips TEA5761 radio tuner.
-	  If in doubt, say N.
-
 config VIDEO_VINO
 	tristate "SGI Vino Video For Linux (EXPERIMENTAL)"
 	depends on I2C && SGI_IP22 && EXPERIMENTAL && VIDEO_V4L2

drivers/media/video/Makefile

···
 
 zr36067-objs	:=	zoran_procfs.o zoran_device.o \
 			zoran_driver.o zoran_card.o
-tuner-objs	:=	tuner-core.o tuner-types.o tuner-simple.o \
-			mt20xx.o tda8290.o tea5767.o tda9887.o
-
-tuner-$(CONFIG_TUNER_TEA5761)	+= tea5761.o
+tuner-objs	:=	tuner-core.o tuner-types.o tda9887.o
 
 msp3400-objs	:=	msp3400-driver.o msp3400-kthreads.o
 
···
 obj-$(CONFIG_TUNER_3036) += tuner-3036.o
 
 obj-$(CONFIG_VIDEO_TUNER) += tuner.o
+
+obj-$(CONFIG_TUNER_SIMPLE) += tuner-simple.o
+obj-$(CONFIG_TUNER_MT20XX) += mt20xx.o
+obj-$(CONFIG_TUNER_TDA8290) += tda8290.o
+obj-$(CONFIG_TUNER_TEA5767) += tea5767.o
+obj-$(CONFIG_TUNER_TEA5761) += tea5761.o
+
 obj-$(CONFIG_VIDEO_BUF)   += video-buf.o
 obj-$(CONFIG_VIDEO_BUF_DVB) += video-buf-dvb.o
 obj-$(CONFIG_VIDEO_BTCX)  += btcx-risc.o

drivers/media/video/mt20xx.h

···
 #include <linux/i2c.h>
 #include "dvb_frontend.h"
 
+#if defined(CONFIG_TUNER_MT20XX) || (defined(CONFIG_TUNER_MT20XX_MODULE) && defined(MODULE))
 extern struct dvb_frontend *microtune_attach(struct dvb_frontend *fe,
 					     struct i2c_adapter* i2c_adap,
 					     u8 i2c_addr);
+#else
+static inline struct dvb_frontend *microtune_attach(struct dvb_frontend *fe,
+					     struct i2c_adapter* i2c_adap,
+					     u8 i2c_addr)
+{
+	printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __FUNCTION__);
+	return NULL;
+}
+#endif
 
 #endif /* __MT20XX_H__ */

drivers/media/video/tda8290.h

···
 	int (*tuner_callback) (void *dev, int command,int arg);
 };
 
+#if defined(CONFIG_TUNER_TDA8290) || (defined(CONFIG_TUNER_TDA8290_MODULE) && defined(MODULE))
 extern int tda8290_probe(struct i2c_adapter* i2c_adap, u8 i2c_addr);
+
 extern struct dvb_frontend *tda8290_attach(struct dvb_frontend *fe,
 					   struct i2c_adapter* i2c_adap,
 					   u8 i2c_addr,
 					   struct tda8290_config *cfg);
+#else
+static inline int tda8290_probe(struct i2c_adapter* i2c_adap, u8 i2c_addr)
+{
+	printk(KERN_INFO "%s: not probed - driver disabled by Kconfig\n",
+	       __FUNCTION__);
+	return -EINVAL;
+}
+
+static inline struct dvb_frontend *tda8290_attach(struct dvb_frontend *fe,
+						  struct i2c_adapter* i2c_adap,
+						  u8 i2c_addr,
+						  struct tda8290_config *cfg)
+{
+	printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __FUNCTION__);
+	return NULL;
+}
+#endif
 
 #endif /* __TDA8290_H__ */

drivers/media/video/tea5761.h

···
 #include <linux/i2c.h>
 #include "dvb_frontend.h"
 
+#if defined(CONFIG_TUNER_TEA5761) || (defined(CONFIG_TUNER_TEA5761_MODULE) && defined(MODULE))
 extern int tea5761_autodetection(struct i2c_adapter* i2c_adap, u8 i2c_addr);
+
 extern struct dvb_frontend *tea5761_attach(struct dvb_frontend *fe,
 					   struct i2c_adapter* i2c_adap,
 					   u8 i2c_addr);
+#else
+static inline int tea5761_autodetection(struct i2c_adapter* i2c_adap,
+					u8 i2c_addr)
+{
+	printk(KERN_INFO "%s: not probed - driver disabled by Kconfig\n",
+	       __FUNCTION__);
+	return -EINVAL;
+}
+
+static inline struct dvb_frontend *tea5761_attach(struct dvb_frontend *fe,
+						   struct i2c_adapter* i2c_adap,
+						   u8 i2c_addr)
+{
+	printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __FUNCTION__);
+	return NULL;
+}
+#endif
 
 #endif /* __TEA5761_H__ */

drivers/media/video/tea5767.h

···
 #include <linux/i2c.h>
 #include "dvb_frontend.h"
 
+#if defined(CONFIG_TUNER_TEA5767) || (defined(CONFIG_TUNER_TEA5767_MODULE) && defined(MODULE))
 extern int tea5767_autodetection(struct i2c_adapter* i2c_adap, u8 i2c_addr);
 
 extern struct dvb_frontend *tea5767_attach(struct dvb_frontend *fe,
 					   struct i2c_adapter* i2c_adap,
 					   u8 i2c_addr);
+#else
+static inline int tea5767_autodetection(struct i2c_adapter* i2c_adap,
+					u8 i2c_addr)
+{
+	printk(KERN_INFO "%s: not probed - driver disabled by Kconfig\n",
+	       __FUNCTION__);
+	return -EINVAL;
+}
+
+static inline struct dvb_frontend *tea5767_attach(struct dvb_frontend *fe,
+						   struct i2c_adapter* i2c_adap,
+						   u8 i2c_addr)
+{
+	printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __FUNCTION__);
+	return NULL;
+}
+#endif
 
 #endif /* __TEA5767_H__ */

drivers/media/video/tuner-simple.h

···
 	struct tunertype *tun;
 };
 
+#if defined(CONFIG_TUNER_SIMPLE) || (defined(CONFIG_TUNER_SIMPLE_MODULE) && defined(MODULE))
 extern struct dvb_frontend *simple_tuner_attach(struct dvb_frontend *fe,
 						struct i2c_adapter *i2c_adap,
 						u8 i2c_addr,
 						struct simple_tuner_config *cfg);
+#else
+static inline struct dvb_frontend *simple_tuner_attach(struct dvb_frontend *fe,
+						       struct i2c_adapter *i2c_adap,
+						       u8 i2c_addr,
+						       struct simple_tuner_config *cfg)
+{
+	printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __FUNCTION__);
+	return NULL;
+}
+#endif
 
 #endif /* __TUNER_SIMPLE_H__ */