[media] drx-j: remove unused code from drx_driver.c

There are several drx-j code there that are never used, as
they don't even fit into Linux DVB subystem model.

Remove them, in order to simplify the code.

Acked-by: Devin Heitmueller <dheitmueller@kernellabs.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>

2 files changed, 1 insertions, 792 deletions

diff --git a/drivers/media/dvb-frontends/drx39xyj/drx_driver.c b/drivers/media/dvb-frontends/drx39xyj/drx_driver.c
index 94768b16ee92..c144fb7080cf 100644
--- a/drivers/media/dvb-frontends/drx39xyj/drx_driver.c
+++ b/drivers/media/dvb-frontends/drx39xyj/drx_driver.c
@@ -135,719 +135,6 @@ FUNCTIONS
 
 /*============================================================================*/
 /*============================================================================*/
-/*== Channel Scan Functions ==================================================*/
-/*============================================================================*/
-/*============================================================================*/
-
-#ifndef DRX_EXCLUDE_SCAN
-
-/* Prototype of default scanning function */
-static int
-scan_function_default(void *scan_context,
-		      enum drx_scan_command scan_command,
-		    struct drx_channel *scan_channel, bool *get_next_channel);
-
-/**
-* \brief Get pointer to scanning function.
-* \param demod:    Pointer to demodulator instance.
-* \return drx_scan_func_t.
-*/
-static drx_scan_func_t get_scan_function(struct drx_demod_instance *demod)
-{
-	struct drx_common_attr *common_attr = (struct drx_common_attr *) (NULL);
-	drx_scan_func_t scan_func = (drx_scan_func_t) (NULL);
-
-	/* get scan function from common attributes */
-	common_attr = (struct drx_common_attr *) demod->my_common_attr;
-	scan_func = common_attr->scan_function;
-
-	if (scan_func != NULL) {
-		/* return device-specific scan function if it's not NULL */
-		return scan_func;
-	}
-	/* otherwise return default scan function in core driver */
-	return &scan_function_default;
-}
-
-/**
-* \brief Get Context pointer.
-* \param demod:    Pointer to demodulator instance.
-* \param scan_context: Context Pointer.
-* \return drx_scan_func_t.
-*/
-static void *get_scan_context(struct drx_demod_instance *demod, void *scan_context)
-{
-	struct drx_common_attr *common_attr = (struct drx_common_attr *) (NULL);
-
-	/* get scan function from common attributes */
-	common_attr = (struct drx_common_attr *) demod->my_common_attr;
-	scan_context = common_attr->scan_context;
-
-	if (scan_context == NULL)
-		scan_context = (void *)demod;
-
-	return scan_context;
-}
-
-/**
-* \brief Wait for lock while scanning.
-* \param demod:    Pointer to demodulator instance.
-* \param lock_stat: Pointer to bool indicating if end result is lock or not.
-* \return int.
-* \retval 0:    Success
-* \retval -EIO: I2C failure or bsp function failure.
-*
-* Wait until timeout, desired lock or NEVER_LOCK.
-* Assume:
-* - lock function returns : at least DRX_NOT_LOCKED and a lock state
-*   higher than DRX_NOT_LOCKED.
-* - BSP has a clock function to retrieve a millisecond ticker value.
-* - BSP has a sleep function to enable sleep of n millisecond.
-*
-* In case DRX_NEVER_LOCK is returned the poll-wait will be aborted.
-*
-*/
-static int scan_wait_for_lock(struct drx_demod_instance *demod, bool *is_locked)
-{
-	bool done_waiting = false;
-	enum drx_lock_status lock_state = DRX_NOT_LOCKED;
-	enum drx_lock_status desired_lock_state = DRX_NOT_LOCKED;
-	u32 timeout_value = 0;
-	u32 start_time_lock_stage = 0;
-	u32 current_time = 0;
-	u32 timer_value = 0;
-
-	*is_locked = false;
-	timeout_value = (u32) demod->my_common_attr->scan_demod_lock_timeout;
-	desired_lock_state = demod->my_common_attr->scan_desired_lock;
-	start_time_lock_stage = drxbsp_hst_clock();
-
-	/* Start polling loop, checking for lock & timeout */
-	while (!done_waiting) {
-		if (drx_ctrl(demod, DRX_CTRL_LOCK_STATUS, &lock_state))
-			return -EIO;
-
-		current_time = drxbsp_hst_clock();
-
-		timer_value = current_time - start_time_lock_stage;
-		if (lock_state >= desired_lock_state) {
-			*is_locked = true;
-			done_waiting = true;
-		} else if (lock_state == DRX_NEVER_LOCK) {
-			done_waiting = true;
-		} else if (timer_value > timeout_value) {
-			/* lock_state == DRX_NOT_LOCKED  and timeout */
-			done_waiting = true;
-		} else {
-			if (drxbsp_hst_sleep(10) != 0)
-				return -EIO;
-		}
-	}
-
-	return 0;
-}
-
-/*============================================================================*/
-
-/**
-* \brief Determine next frequency to scan.
-* \param demod: Pointer to demodulator instance.
-* \param skip : Minimum frequency step to take.
-* \return int.
-* \retval 0:          Succes.
-* \retval -EINVAL: Invalid frequency plan.
-*
-* Helper function for ctrl_scan_next() function.
-* Compute next frequency & index in frequency plan.
-* Check if scan is ready.
-*
-*/
-static int
-scan_prepare_next_scan(struct drx_demod_instance *demod, s32 skip)
-{
-	struct drx_common_attr *common_attr = (struct drx_common_attr *) (NULL);
-	u16 table_index = 0;
-	u16 frequency_plan_size = 0;
-	struct drx_frequency_plan *frequency_plan = (struct drx_frequency_plan *) (NULL);
-	s32 next_frequency = 0;
-	s32 tuner_min_frequency = 0;
-	s32 tuner_max_frequency = 0;
-
-	common_attr = (struct drx_common_attr *) demod->my_common_attr;
-	table_index = common_attr->scan_freq_plan_index;
-	frequency_plan = common_attr->scan_param->frequency_plan;
-	next_frequency = common_attr->scan_next_frequency;
-	tuner_min_frequency = common_attr->tuner_min_freq_rf;
-	tuner_max_frequency = common_attr->tuner_max_freq_rf;
-
-	do {
-		/* Search next frequency to scan */
-
-		/* always take at least one step */
-		(common_attr->scan_channels_scanned)++;
-		next_frequency += frequency_plan[table_index].step;
-		skip -= frequency_plan[table_index].step;
-
-		/* and then as many steps necessary to exceed 'skip'
-		   without exceeding end of the band */
-		while ((skip > 0) &&
-		       (next_frequency <= frequency_plan[table_index].last)) {
-			(common_attr->scan_channels_scanned)++;
-			next_frequency += frequency_plan[table_index].step;
-			skip -= frequency_plan[table_index].step;
-		}
-		/* reset skip, in case we move to the next band later */
-		skip = 0;
-
-		if (next_frequency > frequency_plan[table_index].last) {
-			/* reached end of this band */
-			table_index++;
-			frequency_plan_size =
-			    common_attr->scan_param->frequency_plan_size;
-			if (table_index >= frequency_plan_size) {
-				/* reached end of frequency plan */
-				common_attr->scan_ready = true;
-			} else {
-				next_frequency = frequency_plan[table_index].first;
-			}
-		}
-		if (next_frequency > (tuner_max_frequency)) {
-			/* reached end of tuner range */
-			common_attr->scan_ready = true;
-		}
-	} while ((next_frequency < tuner_min_frequency) &&
-		 (!common_attr->scan_ready));
-
-	/* Store new values */
-	common_attr->scan_freq_plan_index = table_index;
-	common_attr->scan_next_frequency = next_frequency;
-
-	return 0;
-}
-
-/*============================================================================*/
-
-/**
-* \brief Default DTV scanning function.
-*
-* \param demod:          Pointer to demodulator instance.
-* \param scan_command:    Scanning command: INIT, NEXT or STOP.
-* \param scan_channel:    Channel to check: frequency and bandwidth, others AUTO
-* \param get_next_channel: Return true if next frequency is desired at next call
-*
-* \return int.
-* \retval 0:      Channel found, DRX_CTRL_GET_CHANNEL can be used
-*                             to retrieve channel parameters.
-* \retval -EBUSY:    Channel not found (yet).
-* \retval -EIO:   Something went wrong.
-*
-* scan_channel and get_next_channel will be NULL for INIT and STOP.
-*/
-static int
-scan_function_default(void *scan_context,
-		      enum drx_scan_command scan_command,
-		    struct drx_channel *scan_channel, bool *get_next_channel)
-{
-	struct drx_demod_instance *demod = scan_context;
-	int status;
-	bool is_locked = false;
-
-	/* just return OK if not doing "scan next" */
-	if (scan_command != DRX_SCAN_COMMAND_NEXT)
-		return 0;
-
-	*get_next_channel = false;
-
-	status = drx_ctrl(demod, DRX_CTRL_SET_CHANNEL, scan_channel);
-	if (status)
-		return status;
-
-	status = scan_wait_for_lock(demod, &is_locked);
-	if (status)
-		return status;
-
-	/* done with this channel, move to next one */
-	*get_next_channel = true;
-
-	if (!is_locked)
-		return -EBUSY;		/* no channel found */
-
-	/* channel found */
-	return 0;
-}
-
-/*============================================================================*/
-
-/**
-* \brief Initialize for channel scan.
-* \param demod:     Pointer to demodulator instance.
-* \param scan_param: Pointer to scan parameters.
-* \return int.
-* \retval 0:          Initialized for scan.
-* \retval -EIO:       No overlap between frequency plan and tuner
-*                              range.
-* \retval -EINVAL: Wrong parameters.
-*
-* This function should be called before starting a complete channel scan.
-* It will prepare everything for a complete channel scan.
-* After calling this function the DRX_CTRL_SCAN_NEXT control function can be
-* used to perform the actual scanning. Scanning will start at the first
-* center frequency of the frequency plan that is within the tuner range.
-*
-*/
-static int
-ctrl_scan_init(struct drx_demod_instance *demod, struct drx_scan_param *scan_param)
-{
-	struct drx_common_attr *common_attr = (struct drx_common_attr *) (NULL);
-	s32 max_tuner_freq = 0;
-	s32 min_tuner_freq = 0;
-	u16 nr_channels_in_plan = 0;
-	u16 i = 0;
-	void *scan_context = NULL;
-
-	common_attr = (struct drx_common_attr *) demod->my_common_attr;
-	common_attr->scan_active = true;
-
-	/* invalidate a previous SCAN_INIT */
-	common_attr->scan_param = NULL;
-	common_attr->scan_next_frequency = 0;
-
-	/* Check parameters */
-	if (((demod->my_tuner == NULL) &&
-	     (scan_param->num_tries != 1)) ||
-	    (scan_param == NULL) ||
-	    (scan_param->num_tries == 0) ||
-	    (scan_param->frequency_plan == NULL) ||
-	    (scan_param->frequency_plan_size == 0)
-	    ) {
-		common_attr->scan_active = false;
-		return -EINVAL;
-	}
-
-	/* Check frequency plan contents */
-	max_tuner_freq = common_attr->tuner_max_freq_rf;
-	min_tuner_freq = common_attr->tuner_min_freq_rf;
-	for (i = 0; i < (scan_param->frequency_plan_size); i++) {
-		s32 width = 0;
-		s32 step = scan_param->frequency_plan[i].step;
-		s32 first_freq = scan_param->frequency_plan[i].first;
-		s32 last_freq = scan_param->frequency_plan[i].last;
-		s32 min_freq = 0;
-		s32 max_freq = 0;
-
-		if (step <= 0) {
-			/* Step must be positive and non-zero */
-			common_attr->scan_active = false;
-			return -EINVAL;
-		}
-
-		if (first_freq > last_freq) {
-			/* First center frequency is higher than last center frequency */
-			common_attr->scan_active = false;
-			return -EINVAL;
-		}
-
-		width = last_freq - first_freq;
-
-		if ((width % step) != 0) {
-			/* Difference between last and first center frequency is not
-			   an integer number of steps */
-			common_attr->scan_active = false;
-			return -EINVAL;
-		}
-
-		/* Check if frequency plan entry intersects with tuner range */
-		if (last_freq >= min_tuner_freq) {
-			if (first_freq <= max_tuner_freq) {
-				if (first_freq >= min_tuner_freq) {
-					min_freq = first_freq;
-				} else {
-					s32 n = 0;
-
-					n = (min_tuner_freq - first_freq) / step;
-					if (((min_tuner_freq - first_freq) % step) != 0)
-						n++;
-					min_freq = first_freq + n * step;
-				}
-
-				if (last_freq <= max_tuner_freq) {
-					max_freq = last_freq;
-				} else {
-					s32 n = 0;
-
-					n = (last_freq - max_tuner_freq) / step;
-					if (((last_freq - max_tuner_freq) % step) != 0)
-						n++;
-					max_freq = last_freq - n * step;
-				}
-			}
-		}
-
-		/* Keep track of total number of channels within tuner range
-		   in this frequency plan. */
-		if ((min_freq != 0) && (max_freq != 0)) {
-			nr_channels_in_plan +=
-			    (u16) (((max_freq - min_freq) / step) + 1);
-
-			/* Determine first frequency (within tuner range) to scan */
-			if (common_attr->scan_next_frequency == 0) {
-				common_attr->scan_next_frequency = min_freq;
-				common_attr->scan_freq_plan_index = i;
-			}
-		}
-
-	}			/* for ( ... ) */
-
-	if (nr_channels_in_plan == 0) {
-		/* Tuner range and frequency plan ranges do not overlap */
-		common_attr->scan_active = false;
-		return -EIO;
-	}
-
-	/* Store parameters */
-	common_attr->scan_ready = false;
-	common_attr->scan_max_channels = nr_channels_in_plan;
-	common_attr->scan_channels_scanned = 0;
-	common_attr->scan_param = scan_param;	/* SCAN_NEXT is now allowed */
-
-	scan_context = get_scan_context(demod, scan_context);
-
-	/*
-	 * FIXME: Should we really ignore the result of the scan function?
-	 */
-	(*(get_scan_function(demod)))(scan_context, DRX_SCAN_COMMAND_INIT, NULL, NULL);
-
-	common_attr->scan_active = false;
-
-	return 0;
-}
-
-/*============================================================================*/
-
-/**
-* \brief Stop scanning.
-* \param demod:         Pointer to demodulator instance.
-* \return int.
-* \retval 0:          Scan stopped.
-* \retval -EIO:       Something went wrong.
-* \retval -EINVAL: Wrong parameters.
-*/
-static int ctrl_scan_stop(struct drx_demod_instance *demod)
-{
-	int status = -EIO;
-	struct drx_common_attr *common_attr = (struct drx_common_attr *) (NULL);
-	void *scan_context = NULL;
-
-	common_attr = (struct drx_common_attr *) demod->my_common_attr;
-	common_attr->scan_active = true;
-
-	if ((common_attr->scan_param == NULL) ||
-	    (common_attr->scan_max_channels == 0)) {
-		/* Scan was not running, just return OK */
-		common_attr->scan_active = false;
-		return 0;
-	}
-
-	/* Call default or device-specific scanning stop function */
-	scan_context = get_scan_context(demod, scan_context);
-
-	status = (*(get_scan_function(demod)))
-	    (scan_context, DRX_SCAN_COMMAND_STOP, NULL, NULL);
-
-	/* All done, invalidate scan-init */
-	common_attr->scan_param = NULL;
-	common_attr->scan_max_channels = 0;
-	common_attr->scan_active = false;
-
-	return status;
-}
-
-/*============================================================================*/
-
-/**
-* \brief Scan for next channel.
-* \param demod:         Pointer to demodulator instance.
-* \param scan_progress:  Pointer to scan progress.
-* \return int.
-* \retval 0:          Channel found, DRX_CTRL_GET_CHANNEL can be used
-*                              to retrieve channel parameters.
-* \retval -EBUSY:        Tried part of the channels, as specified in
-*                              num_tries field of scan parameters. At least one
-*                              more call to DRX_CTRL_SCAN_NEXT is needed to
-*                              complete scanning.
-* \retval -ERANGE:       Reached end of scan range.
-* \retval -EIO:       Something went wrong.
-* \retval -EINVAL: Wrong parameters. The scan_progress may be NULL.
-*
-* Progress indication will run from 0 upto DRX_SCAN_MAX_PROGRESS during scan.
-*
-*/
-static int ctrl_scan_next(struct drx_demod_instance *demod, u16 *scan_progress)
-{
-	struct drx_common_attr *common_attr = (struct drx_common_attr *) (NULL);
-	bool *scan_ready = (bool *)(NULL);
-	u16 max_progress = DRX_SCAN_MAX_PROGRESS;
-	u32 num_tries = 0;
-	u32 i = 0;
-
-	common_attr = (struct drx_common_attr *) demod->my_common_attr;
-
-	/* Check scan parameters */
-	if (scan_progress == NULL) {
-		common_attr->scan_active = false;
-		return -EINVAL;
-	}
-
-	*scan_progress = 0;
-	common_attr->scan_active = true;
-	if ((common_attr->scan_param == NULL) ||
-	    (common_attr->scan_max_channels == 0)) {
-		/* ctrl_scan_init() was not called succesfully before ctrl_scan_next() */
-		common_attr->scan_active = false;
-		return -EIO;
-	}
-
-	*scan_progress = (u16) (((common_attr->scan_channels_scanned) *
-				  ((u32) (max_progress))) /
-				 (common_attr->scan_max_channels));
-
-	/* Scan */
-	num_tries = common_attr->scan_param->num_tries;
-	scan_ready = &(common_attr->scan_ready);
-
-	for (i = 0; ((i < num_tries) && (!(*scan_ready))); i++) {
-		struct drx_channel scan_channel = { 0 };
-		int status = -EIO;
-		struct drx_frequency_plan *freq_plan = (struct drx_frequency_plan *) (NULL);
-		bool next_channel = false;
-		void *scan_context = NULL;
-
-		/* Next channel to scan */
-		freq_plan =
-		    &(common_attr->scan_param->
-		      frequency_plan[common_attr->scan_freq_plan_index]);
-		scan_channel.frequency = common_attr->scan_next_frequency;
-		scan_channel.bandwidth = freq_plan->bandwidth;
-		scan_channel.mirror = DRX_MIRROR_AUTO;
-		scan_channel.constellation = DRX_CONSTELLATION_AUTO;
-		scan_channel.hierarchy = DRX_HIERARCHY_AUTO;
-		scan_channel.priority = DRX_PRIORITY_HIGH;
-		scan_channel.coderate = DRX_CODERATE_AUTO;
-		scan_channel.guard = DRX_GUARD_AUTO;
-		scan_channel.fftmode = DRX_FFTMODE_AUTO;
-		scan_channel.classification = DRX_CLASSIFICATION_AUTO;
-		scan_channel.symbolrate = 0;
-		scan_channel.interleavemode = DRX_INTERLEAVEMODE_AUTO;
-		scan_channel.ldpc = DRX_LDPC_AUTO;
-		scan_channel.carrier = DRX_CARRIER_AUTO;
-		scan_channel.framemode = DRX_FRAMEMODE_AUTO;
-		scan_channel.pilot = DRX_PILOT_AUTO;
-
-		/* Call default or device-specific scanning function */
-		scan_context = get_scan_context(demod, scan_context);
-
-		status = (*(get_scan_function(demod)))
-		    (scan_context, DRX_SCAN_COMMAND_NEXT, &scan_channel,
-		     &next_channel);
-
-		/* Proceed to next channel if requested */
-		if (next_channel) {
-			int next_status = -EIO;
-			s32 skip = 0;
-
-			if (status == 0) {
-				/* a channel was found, so skip some frequency steps */
-				skip = common_attr->scan_param->skip;
-			}
-			next_status = scan_prepare_next_scan(demod, skip);
-
-			/* keep track of progress */
-			*scan_progress =
-			    (u16) (((common_attr->scan_channels_scanned) *
-				      ((u32) (max_progress))) /
-				     (common_attr->scan_max_channels));
-
-			if (next_status != 0) {
-				common_attr->scan_active = false;
-				return next_status;
-			}
-		}
-		if (status != -EBUSY) {
-			/* channel found or error */
-			common_attr->scan_active = false;
-			return status;
-		}
-	}			/* for ( i = 0; i < ( ... num_tries); i++) */
-
-	if ((*scan_ready)) {
-		/* End of scan reached: call stop-scan, ignore any error */
-		ctrl_scan_stop(demod);
-		common_attr->scan_active = false;
-		return -ERANGE;
-	}
-
-	common_attr->scan_active = false;
-
-	return -EBUSY;
-}
-
-#endif /* #ifndef DRX_EXCLUDE_SCAN */
-
-/*============================================================================*/
-
-/**
-* \brief Program tuner.
-* \param demod:         Pointer to demodulator instance.
-* \param tunerChannel:  Pointer to tuning parameters.
-* \return int.
-* \retval 0:          Tuner programmed successfully.
-* \retval -EIO:       Something went wrong.
-* \retval -EINVAL: Wrong parameters.
-*
-* tunerChannel passes parameters to program the tuner,
-* but also returns the actual RF and IF frequency from the tuner.
-*
-*/
-static int
-ctrl_program_tuner(struct drx_demod_instance *demod, struct drx_channel *channel)
-{
-	struct drx_common_attr *common_attr = (struct drx_common_attr *) (NULL);
-	enum drx_standard standard = DRX_STANDARD_UNKNOWN;
-	u32 tuner_mode = 0;
-	int status = -EIO;
-	s32 if_frequency = 0;
-	bool tuner_slow_mode = false;
-
-	/* can't tune without a tuner */
-	if (demod->my_tuner == NULL)
-		return -EINVAL;
-
-	common_attr = demod->my_common_attr;
-
-	/* select analog or digital tuner mode based on current standard */
-	if (drx_ctrl(demod, DRX_CTRL_GET_STANDARD, &standard))
-		return -EIO;
-
-	if (DRX_ISATVSTD(standard))
-		tuner_mode |= TUNER_MODE_ANALOG;
-	else
-
-		tuner_mode |= TUNER_MODE_DIGITAL; /* also for unknown standard */
-
-	/* select tuner bandwidth */
-	switch (channel->bandwidth) {
-	case DRX_BANDWIDTH_6MHZ:
-		tuner_mode |= TUNER_MODE_6MHZ;
-		break;
-	case DRX_BANDWIDTH_7MHZ:
-		tuner_mode |= TUNER_MODE_7MHZ;
-		break;
-	case DRX_BANDWIDTH_8MHZ:
-		tuner_mode |= TUNER_MODE_8MHZ;
-		break;
-	default:		/* note: also for unknown bandwidth */
-		return -EINVAL;
-	}
-
-	tuner_slow_mode = DRX_ATTR_TUNERSLOWMODE(demod);
-
-	/* select fast (switch) or slow (lock) tuner mode */
-	if (tuner_slow_mode)
-		tuner_mode |= TUNER_MODE_LOCK;
-	else
-		tuner_mode |= TUNER_MODE_SWITCH;
-
-	if (common_attr->tuner_port_nr == 1) {
-		bool bridge_closed = true;
-		int status_bridge = -EIO;
-
-		status_bridge = drx_ctrl(demod, DRX_CTRL_I2C_BRIDGE,
-					 &bridge_closed);
-		if (status_bridge)
-			return status_bridge;
-	}
-
-	status = drxbsp_tuner_set_frequency(demod->my_tuner,
-					    tuner_mode, channel->frequency);
-
-	/* attempt restoring bridge before checking status of set_frequency */
-	if (common_attr->tuner_port_nr == 1) {
-		bool bridge_closed = false;
-		int status_bridge = -EIO;
-
-		status_bridge =
-		    drx_ctrl(demod, DRX_CTRL_I2C_BRIDGE, &bridge_closed);
-		if (status_bridge)
-			return status_bridge;
-	}
-
-	/* now check status of drxbsp_tuner_set_frequency */
-	if (status)
-		return status;
-
-	/* get actual RF and IF frequencies from tuner */
-	status = drxbsp_tuner_get_frequency(demod->my_tuner,
-					   tuner_mode,
-					   &(channel->frequency),
-					   &(if_frequency));
-	if (status)
-		return status;
-
-	/* update common attributes with information available from this function;
-	   TODO: check if this is required and safe */
-	DRX_ATTR_INTERMEDIATEFREQ(demod) = if_frequency;
-
-	return 0;
-}
-
-/*============================================================================*/
-
-/**
-* \brief function to do a register dump.
-* \param demod:            Pointer to demodulator instance.
-* \param registers:        Registers to dump.
-* \return int.
-* \retval 0:          Dump executed successfully.
-* \retval -EIO:       Something went wrong.
-* \retval -EINVAL: Wrong parameters.
-*
-*/
-static int ctrl_dump_registers(struct drx_demod_instance *demod,
-			      struct drx_reg_dump *registers)
-{
-	u16 i = 0;
-
-	if (registers == NULL)
-		return -EINVAL;		/* registers not supplied */
-
-	/* start dumping registers */
-	while (registers[i].address) {
-		int status = -EIO;
-		u16 value = 0;
-		u32 data = 0;
-
-		status = demod->my_access_funct->read_reg16func(demod->my_i2c_dev_addr,
-							registers[i].address,
-							&value, 0);
-
-		data = (u32) value;
-
-		/*
-		 * On error: no breakouts;
-		 *   depending on device ID, some HW blocks might not be available
-		 */
-		if (status)
-			data |= ((u32) status) << 16;
-		registers[i].data = data;
-		i++;
-	}
-
-	/* all done, all OK (any errors are saved inside data) */
-	return 0;
-}
-
-/*============================================================================*/
-/*============================================================================*/
 /*===Microcode related functions==============================================*/
 /*============================================================================*/
 /*============================================================================*/
@@ -1281,39 +568,6 @@ ctrl_version(struct drx_demod_instance *demod, struct drx_version_list **version
 /*============================================================================*/
 
 /**
-* \brief This function is obsolete.
-* \param demods: Don't care, parameter is ignored.
-* \return int Return status.
-* \retval 0: Initialization completed.
-*
-* This function is obsolete, prototype available for backward compatability.
-*
-*/
-
-int drx_init(struct drx_demod_instance *demods[])
-{
-	return 0;
-}
-
-/*============================================================================*/
-
-/**
-* \brief This function is obsolete.
-* \return int Return status.
-* \retval 0: Terminated driver successful.
-*
-* This function is obsolete, prototype available for backward compatability.
-*
-*/
-
-int drx_term(void)
-{
-	return 0;
-}
-
-/*============================================================================*/
-
-/**
 * \brief Open a demodulator instance.
 * \param demod: A pointer to a demodulator instance.
 * \return int Return status.
@@ -1469,50 +723,9 @@ drx_ctrl(struct drx_demod_instance *demod, u32 ctrl, void *ctrl_data)
 			}
 			break;
 
-#ifndef DRX_EXCLUDE_SCAN
-	 /*===================================================================*/
-		case DRX_CTRL_SCAN_INIT:
-			{
-				return ctrl_scan_init(demod,
-						    (struct drx_scan_param *) ctrl_data);
-			}
-			break;
-
-	 /*===================================================================*/
-		case DRX_CTRL_SCAN_NEXT:
-			{
-				return ctrl_scan_next(demod, (u16 *)ctrl_data);
-			}
-			break;
-
-	 /*===================================================================*/
-		case DRX_CTRL_SCAN_STOP:
-			{
-				return ctrl_scan_stop(demod);
-			}
-			break;
-#endif /* #ifndef DRX_EXCLUDE_SCAN */
-
-	 /*===================================================================*/
-		case DRX_CTRL_PROGRAM_TUNER:
-			{
-				return ctrl_program_tuner(demod,
-							(struct drx_channel *)
-							ctrl_data);
-			}
-			break;
-
-	 /*===================================================================*/
-		case DRX_CTRL_DUMP_REGISTERS:
-			{
-				return ctrl_dump_registers(demod,
-							 (struct drx_reg_dump *)
-							 ctrl_data);
-			}
-			break;
-
 	 /*===================================================================*/
 		default:
+			pr_err("control %d not supported\n", ctrl);
 			return -ENOTSUPP;
 		}
 	} else {
diff --git a/drivers/media/dvb-frontends/drx39xyj/drx_driver.h b/drivers/media/dvb-frontends/drx39xyj/drx_driver.h
index 1696e0d95657..343ae519b5dc 100644
--- a/drivers/media/dvb-frontends/drx39xyj/drx_driver.h
+++ b/drivers/media/dvb-frontends/drx39xyj/drx_driver.h
@@ -2464,10 +2464,6 @@ Access macros
 Exported FUNCTIONS
 -------------------------------------------------------------------------*/
 
-	int drx_init(struct drx_demod_instance *demods[]);
-
-	int drx_term(void);
-
 	int drx_open(struct drx_demod_instance *demod);
 
 	int drx_close(struct drx_demod_instance *demod);