[media] v4l: move v4l2 core into a separate directory

Currently, the v4l2 core is mixed together with other non-core drivers.
Move them into a separate directory.

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

24 files changed, 0 insertions, 17455 deletions

diff --git a/drivers/media/video/Kconfig b/drivers/media/video/Kconfig
index a5e3bd04408..068e8daa6b7 100644
--- a/drivers/media/video/Kconfig
+++ b/drivers/media/video/Kconfig
@@ -2,32 +2,6 @@
 # Generic video config states
 #
 
-config VIDEO_V4L2
-	tristate
-	depends on VIDEO_DEV && VIDEO_V4L2_COMMON
-	default y
-
-config VIDEOBUF_GEN
-	tristate
-
-config VIDEOBUF_DMA_SG
-	depends on HAS_DMA
-	select VIDEOBUF_GEN
-	tristate
-
-config VIDEOBUF_VMALLOC
-	select VIDEOBUF_GEN
-	tristate
-
-config VIDEOBUF_DMA_CONTIG
-	depends on HAS_DMA
-	select VIDEOBUF_GEN
-	tristate
-
-config VIDEOBUF_DVB
-	tristate
-	select VIDEOBUF_GEN
-
 config VIDEO_BTCX
 	depends on PCI
 	tristate
@@ -36,36 +10,6 @@ config VIDEO_TVEEPROM
 	tristate
 	depends on I2C
 
-config VIDEO_TUNER
-	tristate
-	depends on MEDIA_TUNER
-
-config V4L2_MEM2MEM_DEV
-	tristate
-	depends on VIDEOBUF2_CORE
-
-config VIDEOBUF2_CORE
-	tristate
-
-config VIDEOBUF2_MEMOPS
-	tristate
-
-config VIDEOBUF2_DMA_CONTIG
-	select VIDEOBUF2_CORE
-	select VIDEOBUF2_MEMOPS
-	tristate
-
-config VIDEOBUF2_VMALLOC
-	select VIDEOBUF2_CORE
-	select VIDEOBUF2_MEMOPS
-	tristate
-
-
-config VIDEOBUF2_DMA_SG
-	#depends on HAS_DMA
-	select VIDEOBUF2_CORE
-	select VIDEOBUF2_MEMOPS
-	tristate
 #
 # Multimedia Video device configuration
 #
diff --git a/drivers/media/video/Makefile b/drivers/media/video/Makefile
index 12cad120614..839e2c98237 100644
--- a/drivers/media/video/Makefile
+++ b/drivers/media/video/Makefile
@@ -2,32 +2,18 @@
 # Makefile for the video capture/playback device drivers.
 #
 
-tuner-objs	:=	tuner-core.o
-
 msp3400-objs	:=	msp3400-driver.o msp3400-kthreads.o
 
 stkwebcam-objs	:=	stk-webcam.o stk-sensor.o
 
 omap2cam-objs	:=	omap24xxcam.o omap24xxcam-dma.o
 
-videodev-objs	:=	v4l2-dev.o v4l2-ioctl.o v4l2-device.o v4l2-fh.o \
-			v4l2-event.o v4l2-ctrls.o v4l2-subdev.o
-ifeq ($(CONFIG_COMPAT),y)
-  videodev-objs += v4l2-compat-ioctl32.o
-endif
-
-# V4L2 core modules
-
-obj-$(CONFIG_VIDEO_DEV) += videodev.o v4l2-int-device.o
-obj-$(CONFIG_VIDEO_V4L2_COMMON) += v4l2-common.o
-
 # Helper modules
 
 obj-$(CONFIG_VIDEO_APTINA_PLL) += aptina-pll.o
 
 # All i2c modules must come first:
 
-obj-$(CONFIG_VIDEO_TUNER) += tuner.o
 obj-$(CONFIG_VIDEO_TVAUDIO) += tvaudio.o
 obj-$(CONFIG_VIDEO_TDA7432) += tda7432.o
 obj-$(CONFIG_VIDEO_SAA6588) += saa6588.o
@@ -128,21 +114,8 @@ obj-$(CONFIG_STA2X11_VIP) += sta2x11_vip.o
 obj-$(CONFIG_VIDEO_TIMBERDALE)	+= timblogiw.o
 obj-$(CONFIG_VIDEO_STK1160) += stk1160/
 
-obj-$(CONFIG_VIDEOBUF_GEN) += videobuf-core.o
-obj-$(CONFIG_VIDEOBUF_DMA_SG) += videobuf-dma-sg.o
-obj-$(CONFIG_VIDEOBUF_DMA_CONTIG) += videobuf-dma-contig.o
-obj-$(CONFIG_VIDEOBUF_VMALLOC) += videobuf-vmalloc.o
-obj-$(CONFIG_VIDEOBUF_DVB) += videobuf-dvb.o
 obj-$(CONFIG_VIDEO_BTCX)  += btcx-risc.o
 
-obj-$(CONFIG_VIDEOBUF2_CORE)		+= videobuf2-core.o
-obj-$(CONFIG_VIDEOBUF2_MEMOPS)		+= videobuf2-memops.o
-obj-$(CONFIG_VIDEOBUF2_VMALLOC)		+= videobuf2-vmalloc.o
-obj-$(CONFIG_VIDEOBUF2_DMA_CONTIG)	+= videobuf2-dma-contig.o
-obj-$(CONFIG_VIDEOBUF2_DMA_SG)		+= videobuf2-dma-sg.o
-
-obj-$(CONFIG_V4L2_MEM2MEM_DEV) += v4l2-mem2mem.o
-
 obj-$(CONFIG_VIDEO_M32R_AR_M64278) += arv.o
 
 obj-$(CONFIG_VIDEO_CX2341X) += cx2341x.o
diff --git a/drivers/media/video/tuner-core.c b/drivers/media/video/tuner-core.c
deleted file mode 100644
index b5a819af2b8..00000000000
--- a/drivers/media/video/tuner-core.c
+++ /dev/null
@@ -1,1354 +0,0 @@
-/*
- * i2c tv tuner chip device driver
- * core core, i.e. kernel interfaces, registering and so on
- *
- * Copyright(c) by Ralph Metzler, Gerd Knorr, Gunther Mayer
- *
- * Copyright(c) 2005-2011 by Mauro Carvalho Chehab
- *	- Added support for a separate Radio tuner
- *	- Major rework and cleanups at the code
- *
- * This driver supports many devices and the idea is to let the driver
- * detect which device is present. So rather than listing all supported
- * devices here, we pretend to support a single, fake device type that will
- * handle both radio and analog TV tuning.
- */
-
-#include <linux/module.h>
-#include <linux/kernel.h>
-#include <linux/string.h>
-#include <linux/timer.h>
-#include <linux/delay.h>
-#include <linux/errno.h>
-#include <linux/slab.h>
-#include <linux/poll.h>
-#include <linux/i2c.h>
-#include <linux/types.h>
-#include <linux/init.h>
-#include <linux/videodev2.h>
-#include <media/tuner.h>
-#include <media/tuner-types.h>
-#include <media/v4l2-device.h>
-#include <media/v4l2-ioctl.h>
-#include "mt20xx.h"
-#include "tda8290.h"
-#include "tea5761.h"
-#include "tea5767.h"
-#include "tuner-xc2028.h"
-#include "tuner-simple.h"
-#include "tda9887.h"
-#include "xc5000.h"
-#include "tda18271.h"
-#include "xc4000.h"
-
-#define UNSET (-1U)
-
-#define PREFIX (t->i2c->driver->driver.name)
-
-/*
- * Driver modprobe parameters
- */
-
-/* insmod options used at init time => read/only */
-static unsigned int addr;
-static unsigned int no_autodetect;
-static unsigned int show_i2c;
-
-module_param(addr, int, 0444);
-module_param(no_autodetect, int, 0444);
-module_param(show_i2c, int, 0444);
-
-/* insmod options used at runtime => read/write */
-static int tuner_debug;
-static unsigned int tv_range[2] = { 44, 958 };
-static unsigned int radio_range[2] = { 65, 108 };
-static char pal[] = "--";
-static char secam[] = "--";
-static char ntsc[] = "-";
-
-module_param_named(debug, tuner_debug, int, 0644);
-module_param_array(tv_range, int, NULL, 0644);
-module_param_array(radio_range, int, NULL, 0644);
-module_param_string(pal, pal, sizeof(pal), 0644);
-module_param_string(secam, secam, sizeof(secam), 0644);
-module_param_string(ntsc, ntsc, sizeof(ntsc), 0644);
-
-/*
- * Static vars
- */
-
-static LIST_HEAD(tuner_list);
-static const struct v4l2_subdev_ops tuner_ops;
-
-/*
- * Debug macros
- */
-
-#define tuner_warn(fmt, arg...) do {			\
-	printk(KERN_WARNING "%s %d-%04x: " fmt, PREFIX, \
-	       i2c_adapter_id(t->i2c->adapter),		\
-	       t->i2c->addr, ##arg);			\
-	 } while (0)
-
-#define tuner_info(fmt, arg...) do {			\
-	printk(KERN_INFO "%s %d-%04x: " fmt, PREFIX,	\
-	       i2c_adapter_id(t->i2c->adapter),		\
-	       t->i2c->addr, ##arg);			\
-	 } while (0)
-
-#define tuner_err(fmt, arg...) do {			\
-	printk(KERN_ERR "%s %d-%04x: " fmt, PREFIX,	\
-	       i2c_adapter_id(t->i2c->adapter),		\
-	       t->i2c->addr, ##arg);			\
-	 } while (0)
-
-#define tuner_dbg(fmt, arg...) do {				\
-	if (tuner_debug)					\
-		printk(KERN_DEBUG "%s %d-%04x: " fmt, PREFIX,	\
-		       i2c_adapter_id(t->i2c->adapter),		\
-		       t->i2c->addr, ##arg);			\
-	 } while (0)
-
-/*
- * Internal struct used inside the driver
- */
-
-struct tuner {
-	/* device */
-	struct dvb_frontend fe;
-	struct i2c_client   *i2c;
-	struct v4l2_subdev  sd;
-	struct list_head    list;
-
-	/* keep track of the current settings */
-	v4l2_std_id         std;
-	unsigned int        tv_freq;
-	unsigned int        radio_freq;
-	unsigned int        audmode;
-
-	enum v4l2_tuner_type mode;
-	unsigned int        mode_mask; /* Combination of allowable modes */
-
-	bool                standby;	/* Standby mode */
-
-	unsigned int        type; /* chip type id */
-	unsigned int        config;
-	const char          *name;
-};
-
-/*
- * Function prototypes
- */
-
-static void set_tv_freq(struct i2c_client *c, unsigned int freq);
-static void set_radio_freq(struct i2c_client *c, unsigned int freq);
-
-/*
- * tuner attach/detach logic
- */
-
-/* This macro allows us to probe dynamically, avoiding static links */
-#ifdef CONFIG_MEDIA_ATTACH
-#define tuner_symbol_probe(FUNCTION, ARGS...) ({ \
-	int __r = -EINVAL; \
-	typeof(&FUNCTION) __a = symbol_request(FUNCTION); \
-	if (__a) { \
-		__r = (int) __a(ARGS); \
-		symbol_put(FUNCTION); \
-	} else { \
-		printk(KERN_ERR "TUNER: Unable to find " \
-				"symbol "#FUNCTION"()\n"); \
-	} \
-	__r; \
-})
-
-static void tuner_detach(struct dvb_frontend *fe)
-{
-	if (fe->ops.tuner_ops.release) {
-		fe->ops.tuner_ops.release(fe);
-		symbol_put_addr(fe->ops.tuner_ops.release);
-	}
-	if (fe->ops.analog_ops.release) {
-		fe->ops.analog_ops.release(fe);
-		symbol_put_addr(fe->ops.analog_ops.release);
-	}
-}
-#else
-#define tuner_symbol_probe(FUNCTION, ARGS...) ({ \
-	FUNCTION(ARGS); \
-})
-
-static void tuner_detach(struct dvb_frontend *fe)
-{
-	if (fe->ops.tuner_ops.release)
-		fe->ops.tuner_ops.release(fe);
-	if (fe->ops.analog_ops.release)
-		fe->ops.analog_ops.release(fe);
-}
-#endif
-
-
-static inline struct tuner *to_tuner(struct v4l2_subdev *sd)
-{
-	return container_of(sd, struct tuner, sd);
-}
-
-/*
- * struct analog_demod_ops callbacks
- */
-
-static void fe_set_params(struct dvb_frontend *fe,
-			  struct analog_parameters *params)
-{
-	struct dvb_tuner_ops *fe_tuner_ops = &fe->ops.tuner_ops;
-	struct tuner *t = fe->analog_demod_priv;
-
-	if (NULL == fe_tuner_ops->set_analog_params) {
-		tuner_warn("Tuner frontend module has no way to set freq\n");
-		return;
-	}
-	fe_tuner_ops->set_analog_params(fe, params);
-}
-
-static void fe_standby(struct dvb_frontend *fe)
-{
-	struct dvb_tuner_ops *fe_tuner_ops = &fe->ops.tuner_ops;
-
-	if (fe_tuner_ops->sleep)
-		fe_tuner_ops->sleep(fe);
-}
-
-static int fe_has_signal(struct dvb_frontend *fe)
-{
-	u16 strength = 0;
-
-	if (fe->ops.tuner_ops.get_rf_strength)
-		fe->ops.tuner_ops.get_rf_strength(fe, &strength);
-
-	return strength;
-}
-
-static int fe_get_afc(struct dvb_frontend *fe)
-{
-	s32 afc = 0;
-
-	if (fe->ops.tuner_ops.get_afc)
-		fe->ops.tuner_ops.get_afc(fe, &afc);
-
-	return 0;
-}
-
-static int fe_set_config(struct dvb_frontend *fe, void *priv_cfg)
-{
-	struct dvb_tuner_ops *fe_tuner_ops = &fe->ops.tuner_ops;
-	struct tuner *t = fe->analog_demod_priv;
-
-	if (fe_tuner_ops->set_config)
-		return fe_tuner_ops->set_config(fe, priv_cfg);
-
-	tuner_warn("Tuner frontend module has no way to set config\n");
-
-	return 0;
-}
-
-static void tuner_status(struct dvb_frontend *fe);
-
-static struct analog_demod_ops tuner_analog_ops = {
-	.set_params     = fe_set_params,
-	.standby        = fe_standby,
-	.has_signal     = fe_has_signal,
-	.get_afc        = fe_get_afc,
-	.set_config     = fe_set_config,
-	.tuner_status   = tuner_status
-};
-
-/*
- * Functions to select between radio and TV and tuner probe/remove functions
- */
-
-/**
- * set_type - Sets the tuner type for a given device
- *
- * @c:			i2c_client descriptoy
- * @type:		type of the tuner (e. g. tuner number)
- * @new_mode_mask:	Indicates if tuner supports TV and/or Radio
- * @new_config:		an optional parameter ranging from 0-255 used by
-			a few tuners to adjust an internal parameter,
-			like LNA mode
- * @tuner_callback:	an optional function to be called when switching
- *			to analog mode
- *
- * This function applys the tuner config to tuner specified
- * by tun_setup structure. It contains several per-tuner initialization "magic"
- */
-static void set_type(struct i2c_client *c, unsigned int type,
-		     unsigned int new_mode_mask, unsigned int new_config,
-		     int (*tuner_callback) (void *dev, int component, int cmd, int arg))
-{
-	struct tuner *t = to_tuner(i2c_get_clientdata(c));
-	struct dvb_tuner_ops *fe_tuner_ops = &t->fe.ops.tuner_ops;
-	struct analog_demod_ops *analog_ops = &t->fe.ops.analog_ops;
-	unsigned char buffer[4];
-	int tune_now = 1;
-
-	if (type == UNSET || type == TUNER_ABSENT) {
-		tuner_dbg("tuner 0x%02x: Tuner type absent\n", c->addr);
-		return;
-	}
-
-	t->type = type;
-	/* prevent invalid config values */
-	t->config = new_config < 256 ? new_config : 0;
-	if (tuner_callback != NULL) {
-		tuner_dbg("defining GPIO callback\n");
-		t->fe.callback = tuner_callback;
-	}
-
-	/* discard private data, in case set_type() was previously called */
-	tuner_detach(&t->fe);
-	t->fe.analog_demod_priv = NULL;
-
-	switch (t->type) {
-	case TUNER_MT2032:
-		if (!dvb_attach(microtune_attach,
-			   &t->fe, t->i2c->adapter, t->i2c->addr))
-			goto attach_failed;
-		break;
-	case TUNER_PHILIPS_TDA8290:
-	{
-		struct tda829x_config cfg = {
-			.lna_cfg        = t->config,
-		};
-		if (!dvb_attach(tda829x_attach, &t->fe, t->i2c->adapter,
-				t->i2c->addr, &cfg))
-			goto attach_failed;
-		break;
-	}
-	case TUNER_TEA5767:
-		if (!dvb_attach(tea5767_attach, &t->fe,
-				t->i2c->adapter, t->i2c->addr))
-			goto attach_failed;
-		t->mode_mask = T_RADIO;
-		break;
-	case TUNER_TEA5761:
-		if (!dvb_attach(tea5761_attach, &t->fe,
-				t->i2c->adapter, t->i2c->addr))
-			goto attach_failed;
-		t->mode_mask = T_RADIO;
-		break;
-	case TUNER_PHILIPS_FMD1216ME_MK3:
-	case TUNER_PHILIPS_FMD1216MEX_MK3:
-		buffer[0] = 0x0b;
-		buffer[1] = 0xdc;
-		buffer[2] = 0x9c;
-		buffer[3] = 0x60;
-		i2c_master_send(c, buffer, 4);
-		mdelay(1);
-		buffer[2] = 0x86;
-		buffer[3] = 0x54;
-		i2c_master_send(c, buffer, 4);
-		if (!dvb_attach(simple_tuner_attach, &t->fe,
-				t->i2c->adapter, t->i2c->addr, t->type))
-			goto attach_failed;
-		break;
-	case TUNER_PHILIPS_TD1316:
-		buffer[0] = 0x0b;
-		buffer[1] = 0xdc;
-		buffer[2] = 0x86;
-		buffer[3] = 0xa4;
-		i2c_master_send(c, buffer, 4);
-		if (!dvb_attach(simple_tuner_attach, &t->fe,
-				t->i2c->adapter, t->i2c->addr, t->type))
-			goto attach_failed;
-		break;
-	case TUNER_XC2028:
-	{
-		struct xc2028_config cfg = {
-			.i2c_adap  = t->i2c->adapter,
-			.i2c_addr  = t->i2c->addr,
-		};
-		if (!dvb_attach(xc2028_attach, &t->fe, &cfg))
-			goto attach_failed;
-		tune_now = 0;
-		break;
-	}
-	case TUNER_TDA9887:
-		if (!dvb_attach(tda9887_attach,
-			   &t->fe, t->i2c->adapter, t->i2c->addr))
-			goto attach_failed;
-		break;
-	case TUNER_XC5000:
-	{
-		struct xc5000_config xc5000_cfg = {
-			.i2c_address = t->i2c->addr,
-			/* if_khz will be set at dvb_attach() */
-			.if_khz	  = 0,
-		};
-
-		if (!dvb_attach(xc5000_attach,
-				&t->fe, t->i2c->adapter, &xc5000_cfg))
-			goto attach_failed;
-		tune_now = 0;
-		break;
-	}
-	case TUNER_XC5000C:
-	{
-		struct xc5000_config xc5000c_cfg = {
-			.i2c_address = t->i2c->addr,
-			/* if_khz will be set at dvb_attach() */
-			.if_khz	  = 0,
-			.chip_id  = XC5000C,
-		};
-
-		if (!dvb_attach(xc5000_attach,
-				&t->fe, t->i2c->adapter, &xc5000c_cfg))
-			goto attach_failed;
-		tune_now = 0;
-		break;
-	}
-	case TUNER_NXP_TDA18271:
-	{
-		struct tda18271_config cfg = {
-			.config = t->config,
-			.small_i2c = TDA18271_03_BYTE_CHUNK_INIT,
-		};
-
-		if (!dvb_attach(tda18271_attach, &t->fe, t->i2c->addr,
-				t->i2c->adapter, &cfg))
-			goto attach_failed;
-		tune_now = 0;
-		break;
-	}
-	case TUNER_XC4000:
-	{
-		struct xc4000_config xc4000_cfg = {
-			.i2c_address	  = t->i2c->addr,
-			/* FIXME: the correct parameters will be set */
-			/* only when the digital dvb_attach() occurs */
-			.default_pm	  = 0,
-			.dvb_amplitude	  = 0,
-			.set_smoothedcvbs = 0,
-			.if_khz		  = 0
-		};
-		if (!dvb_attach(xc4000_attach,
-				&t->fe, t->i2c->adapter, &xc4000_cfg))
-			goto attach_failed;
-		tune_now = 0;
-		break;
-	}
-	default:
-		if (!dvb_attach(simple_tuner_attach, &t->fe,
-				t->i2c->adapter, t->i2c->addr, t->type))
-			goto attach_failed;
-
-		break;
-	}
-
-	if ((NULL == analog_ops->set_params) &&
-	    (fe_tuner_ops->set_analog_params)) {
-
-		t->name = fe_tuner_ops->info.name;
-
-		t->fe.analog_demod_priv = t;
-		memcpy(analog_ops, &tuner_analog_ops,
-		       sizeof(struct analog_demod_ops));
-
-	} else {
-		t->name = analog_ops->info.name;
-	}
-
-	tuner_dbg("type set to %s\n", t->name);
-
-	t->mode_mask = new_mode_mask;
-
-	/* Some tuners require more initialization setup before use,
-	   such as firmware download or device calibration.
-	   trying to set a frequency here will just fail
-	   FIXME: better to move set_freq to the tuner code. This is needed
-	   on analog tuners for PLL to properly work
-	 */
-	if (tune_now) {
-		if (V4L2_TUNER_RADIO == t->mode)
-			set_radio_freq(c, t->radio_freq);
-		else
-			set_tv_freq(c, t->tv_freq);
-	}
-
-	tuner_dbg("%s %s I2C addr 0x%02x with type %d used for 0x%02x\n",
-		  c->adapter->name, c->driver->driver.name, c->addr << 1, type,
-		  t->mode_mask);
-	return;
-
-attach_failed:
-	tuner_dbg("Tuner attach for type = %d failed.\n", t->type);
-	t->type = TUNER_ABSENT;
-
-	return;
-}
-
-/**
- * tuner_s_type_addr - Sets the tuner type for a device
- *
- * @sd:		subdev descriptor
- * @tun_setup:	type to be associated to a given tuner i2c address
- *
- * This function applys the tuner config to tuner specified
- * by tun_setup structure.
- * If tuner I2C address is UNSET, then it will only set the device
- * if the tuner supports the mode specified in the call.
- * If the address is specified, the change will be applied only if
- * tuner I2C address matches.
- * The call can change the tuner number and the tuner mode.
- */
-static int tuner_s_type_addr(struct v4l2_subdev *sd,
-			     struct tuner_setup *tun_setup)
-{
-	struct tuner *t = to_tuner(sd);
-	struct i2c_client *c = v4l2_get_subdevdata(sd);
-
-	tuner_dbg("Calling set_type_addr for type=%d, addr=0x%02x, mode=0x%02x, config=0x%02x\n",
-			tun_setup->type,
-			tun_setup->addr,
-			tun_setup->mode_mask,
-			tun_setup->config);
-
-	if ((t->type == UNSET && ((tun_setup->addr == ADDR_UNSET) &&
-	    (t->mode_mask & tun_setup->mode_mask))) ||
-	    (tun_setup->addr == c->addr)) {
-		set_type(c, tun_setup->type, tun_setup->mode_mask,
-			 tun_setup->config, tun_setup->tuner_callback);
-	} else
-		tuner_dbg("set addr discarded for type %i, mask %x. "
-			  "Asked to change tuner at addr 0x%02x, with mask %x\n",
-			  t->type, t->mode_mask,
-			  tun_setup->addr, tun_setup->mode_mask);
-
-	return 0;
-}
-
-/**
- * tuner_s_config - Sets tuner configuration
- *
- * @sd:		subdev descriptor
- * @cfg:	tuner configuration
- *
- * Calls tuner set_config() private function to set some tuner-internal
- * parameters
- */
-static int tuner_s_config(struct v4l2_subdev *sd,
-			  const struct v4l2_priv_tun_config *cfg)
-{
-	struct tuner *t = to_tuner(sd);
-	struct analog_demod_ops *analog_ops = &t->fe.ops.analog_ops;
-
-	if (t->type != cfg->tuner)
-		return 0;
-
-	if (analog_ops->set_config) {
-		analog_ops->set_config(&t->fe, cfg->priv);
-		return 0;
-	}
-
-	tuner_dbg("Tuner frontend module has no way to set config\n");
-	return 0;
-}
-
-/**
- * tuner_lookup - Seek for tuner adapters
- *
- * @adap:	i2c_adapter struct
- * @radio:	pointer to be filled if the adapter is radio
- * @tv:		pointer to be filled if the adapter is TV
- *
- * Search for existing radio and/or TV tuners on the given I2C adapter,
- * discarding demod-only adapters (tda9887).
- *
- * Note that when this function is called from tuner_probe you can be
- * certain no other devices will be added/deleted at the same time, I2C
- * core protects against that.
- */
-static void tuner_lookup(struct i2c_adapter *adap,
-		struct tuner **radio, struct tuner **tv)
-{
-	struct tuner *pos;
-
-	*radio = NULL;
-	*tv = NULL;
-
-	list_for_each_entry(pos, &tuner_list, list) {
-		int mode_mask;
-
-		if (pos->i2c->adapter != adap ||
-		    strcmp(pos->i2c->driver->driver.name, "tuner"))
-			continue;
-
-		mode_mask = pos->mode_mask;
-		if (*radio == NULL && mode_mask == T_RADIO)
-			*radio = pos;
-		/* Note: currently TDA9887 is the only demod-only
-		   device. If other devices appear then we need to
-		   make this test more general. */
-		else if (*tv == NULL && pos->type != TUNER_TDA9887 &&
-			 (pos->mode_mask & T_ANALOG_TV))
-			*tv = pos;
-	}
-}
-
-/**
- *tuner_probe - Probes the existing tuners on an I2C bus
- *
- * @client:	i2c_client descriptor
- * @id:		not used
- *
- * This routine probes for tuners at the expected I2C addresses. On most
- * cases, if a device answers to a given I2C address, it assumes that the
- * device is a tuner. On a few cases, however, an additional logic is needed
- * to double check if the device is really a tuner, or to identify the tuner
- * type, like on tea5767/5761 devices.
- *
- * During client attach, set_type is called by adapter's attach_inform callback.
- * set_type must then be completed by tuner_probe.
- */
-static int tuner_probe(struct i2c_client *client,
-		       const struct i2c_device_id *id)
-{
-	struct tuner *t;
-	struct tuner *radio;
-	struct tuner *tv;
-
-	t = kzalloc(sizeof(struct tuner), GFP_KERNEL);
-	if (NULL == t)
-		return -ENOMEM;
-	v4l2_i2c_subdev_init(&t->sd, client, &tuner_ops);
-	t->i2c = client;
-	t->name = "(tuner unset)";
-	t->type = UNSET;
-	t->audmode = V4L2_TUNER_MODE_STEREO;
-	t->standby = 1;
-	t->radio_freq = 87.5 * 16000;	/* Initial freq range */
-	t->tv_freq = 400 * 16; /* Sets freq to VHF High - needed for some PLL's to properly start */
-
-	if (show_i2c) {
-		unsigned char buffer[16];
-		int i, rc;
-
-		memset(buffer, 0, sizeof(buffer));
-		rc = i2c_master_recv(client, buffer, sizeof(buffer));
-		tuner_info("I2C RECV = ");
-		for (i = 0; i < rc; i++)
-			printk(KERN_CONT "%02x ", buffer[i]);
-		printk("\n");
-	}
-
-	/* autodetection code based on the i2c addr */
-	if (!no_autodetect) {
-		switch (client->addr) {
-		case 0x10:
-			if (tuner_symbol_probe(tea5761_autodetection,
-					       t->i2c->adapter,
-					       t->i2c->addr) >= 0) {
-				t->type = TUNER_TEA5761;
-				t->mode_mask = T_RADIO;
-				tuner_lookup(t->i2c->adapter, &radio, &tv);
-				if (tv)
-					tv->mode_mask &= ~T_RADIO;
-
-				goto register_client;
-			}
-			kfree(t);
-			return -ENODEV;
-		case 0x42:
-		case 0x43:
-		case 0x4a:
-		case 0x4b:
-			/* If chip is not tda8290, don't register.
-			   since it can be tda9887*/
-			if (tuner_symbol_probe(tda829x_probe, t->i2c->adapter,
-					       t->i2c->addr) >= 0) {
-				tuner_dbg("tda829x detected\n");
-			} else {
-				/* Default is being tda9887 */
-				t->type = TUNER_TDA9887;
-				t->mode_mask = T_RADIO | T_ANALOG_TV;
-				goto register_client;
-			}
-			break;
-		case 0x60:
-			if (tuner_symbol_probe(tea5767_autodetection,
-					       t->i2c->adapter, t->i2c->addr)
-					>= 0) {
-				t->type = TUNER_TEA5767;
-				t->mode_mask = T_RADIO;
-				/* Sets freq to FM range */
-				tuner_lookup(t->i2c->adapter, &radio, &tv);
-				if (tv)
-					tv->mode_mask &= ~T_RADIO;
-
-				goto register_client;
-			}
-			break;
-		}
-	}
-
-	/* Initializes only the first TV tuner on this adapter. Why only the
-	   first? Because there are some devices (notably the ones with TI
-	   tuners) that have more than one i2c address for the *same* device.
-	   Experience shows that, except for just one case, the first
-	   address is the right one. The exception is a Russian tuner
-	   (ACORP_Y878F). So, the desired behavior is just to enable the
-	   first found TV tuner. */
-	tuner_lookup(t->i2c->adapter, &radio, &tv);
-	if (tv == NULL) {
-		t->mode_mask = T_ANALOG_TV;
-		if (radio == NULL)
-			t->mode_mask |= T_RADIO;
-		tuner_dbg("Setting mode_mask to 0x%02x\n", t->mode_mask);
-	}
-
-	/* Should be just before return */
-register_client:
-	/* Sets a default mode */
-	if (t->mode_mask & T_ANALOG_TV)
-		t->mode = V4L2_TUNER_ANALOG_TV;
-	else
-		t->mode = V4L2_TUNER_RADIO;
-	set_type(client, t->type, t->mode_mask, t->config, t->fe.callback);
-	list_add_tail(&t->list, &tuner_list);
-
-	tuner_info("Tuner %d found with type(s)%s%s.\n",
-		   t->type,
-		   t->mode_mask & T_RADIO ? " Radio" : "",
-		   t->mode_mask & T_ANALOG_TV ? " TV" : "");
-	return 0;
-}
-
-/**
- * tuner_remove - detaches a tuner
- *
- * @client:	i2c_client descriptor
- */
-
-static int tuner_remove(struct i2c_client *client)
-{
-	struct tuner *t = to_tuner(i2c_get_clientdata(client));
-
-	v4l2_device_unregister_subdev(&t->sd);
-	tuner_detach(&t->fe);
-	t->fe.analog_demod_priv = NULL;
-
-	list_del(&t->list);
-	kfree(t);
-	return 0;
-}
-
-/*
- * Functions to switch between Radio and TV
- *
- * A few cards have a separate I2C tuner for radio. Those routines
- * take care of switching between TV/Radio mode, filtering only the
- * commands that apply to the Radio or TV tuner.
- */
-
-/**
- * check_mode - Verify if tuner supports the requested mode
- * @t: a pointer to the module's internal struct_tuner
- *
- * This function checks if the tuner is capable of tuning analog TV,
- * digital TV or radio, depending on what the caller wants. If the
- * tuner can't support that mode, it returns -EINVAL. Otherwise, it
- * returns 0.
- * This function is needed for boards that have a separate tuner for
- * radio (like devices with tea5767).
- * NOTE: mt20xx uses V4L2_TUNER_DIGITAL_TV and calls set_tv_freq to
- *       select a TV frequency. So, t_mode = T_ANALOG_TV could actually
- *	 be used to represent a Digital TV too.
- */
-static inline int check_mode(struct tuner *t, enum v4l2_tuner_type mode)
-{
-	int t_mode;
-	if (mode == V4L2_TUNER_RADIO)
-		t_mode = T_RADIO;
-	else
-		t_mode = T_ANALOG_TV;
-
-	if ((t_mode & t->mode_mask) == 0)
-		return -EINVAL;
-
-	return 0;
-}
-
-/**
- * set_mode - Switch tuner to other mode.
- * @t:		a pointer to the module's internal struct_tuner
- * @mode:	enum v4l2_type (radio or TV)
- *
- * If tuner doesn't support the needed mode (radio or TV), prints a
- * debug message and returns -EINVAL, changing its state to standby.
- * Otherwise, changes the mode and returns 0.
- */
-static int set_mode(struct tuner *t, enum v4l2_tuner_type mode)
-{
-	struct analog_demod_ops *analog_ops = &t->fe.ops.analog_ops;
-
-	if (mode != t->mode) {
-		if (check_mode(t, mode) == -EINVAL) {
-			tuner_dbg("Tuner doesn't support mode %d. "
-				  "Putting tuner to sleep\n", mode);
-			t->standby = true;
-			if (analog_ops->standby)
-				analog_ops->standby(&t->fe);
-			return -EINVAL;
-		}
-		t->mode = mode;
-		tuner_dbg("Changing to mode %d\n", mode);
-	}
-	return 0;
-}
-
-/**
- * set_freq - Set the tuner to the desired frequency.
- * @t:		a pointer to the module's internal struct_tuner
- * @freq:	frequency to set (0 means to use the current frequency)
- */
-static void set_freq(struct tuner *t, unsigned int freq)
-{
-	struct i2c_client *client = v4l2_get_subdevdata(&t->sd);
-
-	if (t->mode == V4L2_TUNER_RADIO) {
-		if (!freq)
-			freq = t->radio_freq;
-		set_radio_freq(client, freq);
-	} else {
-		if (!freq)
-			freq = t->tv_freq;<