media: remove dead TI wl128x FM radio driver

Commit 78fe66360ed6 ("misc: ti-st: st_kim: remove the driver") deletes the
ti-st driver and its corresponding config option TI_ST.

With that deletion, the Texas Instruments WL128x FM Radio driver is now
dead as well. Delete this obsolete driver.

Signed-off-by: Lukas Bulwahn <[e-mail]>
Acked-by: Bartosz Golaszewski <[e-mail]>
Signed-off-by: Hans Verkuil <[e-mail]>

drivers/media/radio/Kconfig

···
 source "drivers/media/radio/si470x/Kconfig"
 source "drivers/media/radio/si4713/Kconfig"
 
-# TI's ST based wl128x FM radio
-
-source "drivers/media/radio/wl128x/Kconfig"
-
 #
 # ISA drivers configuration
 #

drivers/media/radio/Makefile

···
 obj-$(CONFIG_RADIO_TRUST) += radio-trust.o
 obj-$(CONFIG_RADIO_TYPHOON) += radio-typhoon.o
 obj-$(CONFIG_RADIO_WL1273) += radio-wl1273.o
-obj-$(CONFIG_RADIO_WL128X) += wl128x/
 obj-$(CONFIG_RADIO_ZOLTRIX) += radio-zoltrix.o
 
 obj-$(CONFIG_USB_DSBR) += dsbr100.o

drivers/media/radio/wl128x/Kconfig

···
-# SPDX-License-Identifier: GPL-2.0-only
-#
-# TI's wl128x FM driver based on TI's ST driver.
-#
-config RADIO_WL128X
-	tristate "Texas Instruments WL128x FM Radio"
-	depends on VIDEO_DEV && RFKILL && TTY && TI_ST
-	depends on GPIOLIB || COMPILE_TEST
-	help
-	  Choose Y here if you have this FM radio chip.
-
-	  In order to control your radio card, you will need to use programs
-	  that are compatible with the Video For Linux 2 API.  Information on
-	  this API and pointers to "v4l2" programs may be found at
-	  <file:Documentation/userspace-api/media/index.rst>.

drivers/media/radio/wl128x/Makefile

···
-# SPDX-License-Identifier: GPL-2.0-only
-#
-# Makefile for TI's shared transport driver based wl128x
-# FM radio.
-#
-obj-$(CONFIG_RADIO_WL128X)	+= fm_drv.o
-fm_drv-objs		:= fmdrv_common.o fmdrv_rx.o fmdrv_tx.o fmdrv_v4l2.o

drivers/media/radio/wl128x/fmdrv.h

···
-/* SPDX-License-Identifier: GPL-2.0-only */
-/*
- *  FM Driver for Connectivity chip of Texas Instruments.
- *
- *  Common header for all FM driver sub-modules.
- *
- *  Copyright (C) 2011 Texas Instruments
- */
-
-#ifndef _FM_DRV_H
-#define _FM_DRV_H
-
-#include <linux/skbuff.h>
-#include <linux/interrupt.h>
-#include <sound/core.h>
-#include <sound/initval.h>
-#include <linux/timer.h>
-#include <linux/workqueue.h>
-#include <media/v4l2-ioctl.h>
-#include <media/v4l2-common.h>
-#include <media/v4l2-device.h>
-#include <media/v4l2-ctrls.h>
-
-#define FM_DRV_VERSION            "0.1.1"
-#define FM_DRV_NAME               "ti_fmdrv"
-#define FM_DRV_CARD_SHORT_NAME    "TI FM Radio"
-#define FM_DRV_CARD_LONG_NAME     "Texas Instruments FM Radio"
-
-/* Flag info */
-#define FM_INTTASK_RUNNING            0
-#define FM_INTTASK_SCHEDULE_PENDING   1
-#define FM_FW_DW_INPROGRESS     2
-#define FM_CORE_READY                 3
-#define FM_CORE_TRANSPORT_READY       4
-#define FM_AF_SWITCH_INPROGRESS	      5
-#define FM_CORE_TX_XMITING	      6
-
-#define FM_TUNE_COMPLETE	      0x1
-#define FM_BAND_LIMIT		      0x2
-
-#define FM_DRV_TX_TIMEOUT      (5*HZ)	/* 5 seconds */
-#define FM_DRV_RX_SEEK_TIMEOUT (20*HZ)	/* 20 seconds */
-
-#define fmerr(format, ...) \
-	printk(KERN_ERR "fmdrv: " format, ## __VA_ARGS__)
-#define fmwarn(format, ...) \
-	printk(KERN_WARNING "fmdrv: " format, ##__VA_ARGS__)
-#ifdef DEBUG
-#define fmdbg(format, ...) \
-	printk(KERN_DEBUG "fmdrv: " format, ## __VA_ARGS__)
-#else /* DEBUG */
-#define fmdbg(format, ...) do {} while(0)
-#endif
-enum {
-	FM_MODE_OFF,
-	FM_MODE_TX,
-	FM_MODE_RX,
-	FM_MODE_ENTRY_MAX
-};
-
-#define FM_RX_RDS_INFO_FIELD_MAX	8	/* 4 Group * 2 Bytes */
-
-/* RX RDS data format */
-struct fm_rdsdata_format {
-	union {
-		struct {
-			u8 buff[FM_RX_RDS_INFO_FIELD_MAX];
-		} groupdatabuff;
-		struct {
-			u16 pidata;
-			u8 blk_b[2];
-			u8 blk_c[2];
-			u8 blk_d[2];
-		} groupgeneral;
-		struct {
-			u16 pidata;
-			u8 blk_b[2];
-			u8 af[2];
-			u8 ps[2];
-		} group0A;
-		struct {
-			u16 pi[2];
-			u8 blk_b[2];
-			u8 ps[2];
-		} group0B;
-	} data;
-};
-
-/* FM region (Europe/US, Japan) info */
-struct region_info {
-	u32 chanl_space;
-	u32 bot_freq;
-	u32 top_freq;
-	u8 fm_band;
-};
-struct fmdev;
-typedef void (*int_handler_prototype) (struct fmdev *);
-
-/* FM Interrupt processing related info */
-struct fm_irq {
-	u8 stage;
-	u16 flag;	/* FM interrupt flag */
-	u16 mask;	/* FM interrupt mask */
-	/* Interrupt process timeout handler */
-	struct timer_list timer;
-	u8 retry;
-	int_handler_prototype *handlers;
-};
-
-/* RDS info */
-struct fm_rds {
-	u8 flag;	/* RX RDS on/off status */
-	u8 last_blk_idx;	/* Last received RDS block */
-
-	/* RDS buffer */
-	wait_queue_head_t read_queue;
-	u32 buf_size;	/* Size is always multiple of 3 */
-	u32 wr_idx;
-	u32 rd_idx;
-	u8 *buff;
-};
-
-#define FM_RDS_MAX_AF_LIST		25
-
-/*
- * Current RX channel Alternate Frequency cache.
- * This info is used to switch to other freq (AF)
- * when current channel signal strength is below RSSI threshold.
- */
-struct tuned_station_info {
-	u16 picode;
-	u32 af_cache[FM_RDS_MAX_AF_LIST];
-	u8 afcache_size;
-	u8 af_list_max;
-};
-
-/* FM RX mode info */
-struct fm_rx {
-	struct region_info region;	/* Current selected band */
-	u32 freq;	/* Current RX frquency */
-	u8 mute_mode;	/* Current mute mode */
-	u8 deemphasis_mode; /* Current deemphasis mode */
-	/* RF dependent soft mute mode */
-	u8 rf_depend_mute;
-	u16 volume;	/* Current volume level */
-	u16 rssi_threshold;	/* Current RSSI threshold level */
-	/* Holds the index of the current AF jump */
-	u8 afjump_idx;
-	/* Will hold the frequency before the jump */
-	u32 freq_before_jump;
-	u8 rds_mode;	/* RDS operation mode (RDS/RDBS) */
-	u8 af_mode;	/* Alternate frequency on/off */
-	struct tuned_station_info stat_info;
-	struct fm_rds rds;
-};
-
-#define FMTX_RDS_TXT_STR_SIZE	25
-/*
- * FM TX RDS data
- *
- * @ text_type: is the text following PS or RT
- * @ text: radio text string which could either be PS or RT
- * @ af_freq: alternate frequency for Tx
- * TODO: to be declared in application
- */
-struct tx_rds {
-	u8 text_type;
-	u8 text[FMTX_RDS_TXT_STR_SIZE];
-	u8 flag;
-	u32 af_freq;
-};
-/*
- * FM TX global data
- *
- * @ pwr_lvl: Power Level of the Transmission from mixer control
- * @ xmit_state: Transmission state = Updated locally upon Start/Stop
- * @ audio_io: i2S/Analog
- * @ tx_frq: Transmission frequency
- */
-struct fmtx_data {
-	u8 pwr_lvl;
-	u8 xmit_state;
-	u8 audio_io;
-	u8 region;
-	u16 aud_mode;
-	u32 preemph;
-	u32 tx_frq;
-	struct tx_rds rds;
-};
-
-/* FM driver operation structure */
-struct fmdev {
-	struct video_device *radio_dev;	/* V4L2 video device pointer */
-	struct v4l2_device v4l2_dev;	/* V4L2 top level struct */
-	struct snd_card *card;	/* Card which holds FM mixer controls */
-	u16 asci_id;
-	spinlock_t rds_buff_lock; /* To protect access to RDS buffer */
-	spinlock_t resp_skb_lock; /* To protect access to received SKB */
-
-	long flag;		/*  FM driver state machine info */
-	int streg_cbdata; /* status of ST registration */
-
-	struct sk_buff_head rx_q;	/* RX queue */
-	struct work_struct rx_bh_work;	/* RX BH Work */
-
-	struct sk_buff_head tx_q;	/* TX queue */
-	struct work_struct tx_bh_work;	/* TX BH Work */
-	unsigned long last_tx_jiffies;	/* Timestamp of last pkt sent */
-	atomic_t tx_cnt;	/* Number of packets can send at a time */
-
-	struct sk_buff *resp_skb;	/* Response from the chip */
-	/* Main task completion handler */
-	struct completion maintask_comp;
-	/* Opcode of last command sent to the chip */
-	u8 pre_op;
-	/* Handler used for wakeup when response packet is received */
-	struct completion *resp_comp;
-	struct fm_irq irq_info;
-	u8 curr_fmmode; /* Current FM chip mode (TX, RX, OFF) */
-	struct fm_rx rx;	/* FM receiver info */
-	struct fmtx_data tx_data;
-
-	/* V4L2 ctrl framework handler*/
-	struct v4l2_ctrl_handler ctrl_handler;
-
-	/* For core assisted locking */
-	struct mutex mutex;
-};
-#endif

drivers/media/radio/wl128x/fmdrv_common.c

···
-// SPDX-License-Identifier: GPL-2.0-only
-/*
- *  FM Driver for Connectivity chip of Texas Instruments.
- *
- *  This sub-module of FM driver is common for FM RX and TX
- *  functionality. This module is responsible for:
- *  1) Forming group of Channel-8 commands to perform particular
- *     functionality (eg., frequency set require more than
- *     one Channel-8 command to be sent to the chip).
- *  2) Sending each Channel-8 command to the chip and reading
- *     response back over Shared Transport.
- *  3) Managing TX and RX Queues and BH bh Works.
- *  4) Handling FM Interrupt packet and taking appropriate action.
- *  5) Loading FM firmware to the chip (common, FM TX, and FM RX
- *     firmware files based on mode selection)
- *
- *  Copyright (C) 2011 Texas Instruments
- *  Author: Raja Mani <[e-mail]>
- *  Author: Manjunatha Halli <[e-mail]>
- */
-
-#include <linux/delay.h>
-#include <linux/firmware.h>
-#include <linux/module.h>
-#include <linux/nospec.h>
-#include <linux/jiffies.h>
-
-#include "fmdrv.h"
-#include "fmdrv_v4l2.h"
-#include "fmdrv_common.h"
-#include <linux/ti_wilink_st.h>
-#include "fmdrv_rx.h"
-#include "fmdrv_tx.h"
-
-/* Region info */
-static struct region_info region_configs[] = {
-	/* Europe/US */
-	{
-	 .chanl_space = FM_CHANNEL_SPACING_200KHZ * FM_FREQ_MUL,
-	 .bot_freq = 87500,	/* 87.5 MHz */
-	 .top_freq = 108000,	/* 108 MHz */
-	 .fm_band = 0,
-	 },
-	/* Japan */
-	{
-	 .chanl_space = FM_CHANNEL_SPACING_200KHZ * FM_FREQ_MUL,
-	 .bot_freq = 76000,	/* 76 MHz */
-	 .top_freq = 90000,	/* 90 MHz */
-	 .fm_band = 1,
-	 },
-};
-
-/* Band selection */
-static u8 default_radio_region;	/* Europe/US */
-module_param(default_radio_region, byte, 0);
-MODULE_PARM_DESC(default_radio_region, "Region: 0=Europe/US, 1=Japan");
-
-/* RDS buffer blocks */
-static u32 default_rds_buf = 300;
-module_param(default_rds_buf, uint, 0444);
-MODULE_PARM_DESC(default_rds_buf, "RDS buffer entries");
-
-/* Radio Nr */
-static u32 radio_nr = -1;
-module_param(radio_nr, int, 0444);
-MODULE_PARM_DESC(radio_nr, "Radio Nr");
-
-/* FM irq handlers forward declaration */
-static void fm_irq_send_flag_getcmd(struct fmdev *);
-static void fm_irq_handle_flag_getcmd_resp(struct fmdev *);
-static void fm_irq_handle_hw_malfunction(struct fmdev *);
-static void fm_irq_handle_rds_start(struct fmdev *);
-static void fm_irq_send_rdsdata_getcmd(struct fmdev *);
-static void fm_irq_handle_rdsdata_getcmd_resp(struct fmdev *);
-static void fm_irq_handle_rds_finish(struct fmdev *);
-static void fm_irq_handle_tune_op_ended(struct fmdev *);
-static void fm_irq_handle_power_enb(struct fmdev *);
-static void fm_irq_handle_low_rssi_start(struct fmdev *);
-static void fm_irq_afjump_set_pi(struct fmdev *);
-static void fm_irq_handle_set_pi_resp(struct fmdev *);
-static void fm_irq_afjump_set_pimask(struct fmdev *);
-static void fm_irq_handle_set_pimask_resp(struct fmdev *);
-static void fm_irq_afjump_setfreq(struct fmdev *);
-static void fm_irq_handle_setfreq_resp(struct fmdev *);
-static void fm_irq_afjump_enableint(struct fmdev *);
-static void fm_irq_afjump_enableint_resp(struct fmdev *);
-static void fm_irq_start_afjump(struct fmdev *);
-static void fm_irq_handle_start_afjump_resp(struct fmdev *);
-static void fm_irq_afjump_rd_freq(struct fmdev *);
-static void fm_irq_afjump_rd_freq_resp(struct fmdev *);
-static void fm_irq_handle_low_rssi_finish(struct fmdev *);
-static void fm_irq_send_intmsk_cmd(struct fmdev *);
-static void fm_irq_handle_intmsk_cmd_resp(struct fmdev *);
-
-/*
- * When FM common module receives interrupt packet, following handlers
- * will be executed one after another to service the interrupt(s)
- */
-enum fmc_irq_handler_index {
-	FM_SEND_FLAG_GETCMD_IDX,
-	FM_HANDLE_FLAG_GETCMD_RESP_IDX,
-
-	/* HW malfunction irq handler */
-	FM_HW_MAL_FUNC_IDX,
-
-	/* RDS threshold reached irq handler */
-	FM_RDS_START_IDX,
-	FM_RDS_SEND_RDS_GETCMD_IDX,
-	FM_RDS_HANDLE_RDS_GETCMD_RESP_IDX,
-	FM_RDS_FINISH_IDX,
-
-	/* Tune operation ended irq handler */
-	FM_HW_TUNE_OP_ENDED_IDX,
-
-	/* TX power enable irq handler */
-	FM_HW_POWER_ENB_IDX,
-
-	/* Low RSSI irq handler */
-	FM_LOW_RSSI_START_IDX,
-	FM_AF_JUMP_SETPI_IDX,
-	FM_AF_JUMP_HANDLE_SETPI_RESP_IDX,
-	FM_AF_JUMP_SETPI_MASK_IDX,
-	FM_AF_JUMP_HANDLE_SETPI_MASK_RESP_IDX,
-	FM_AF_JUMP_SET_AF_FREQ_IDX,
-	FM_AF_JUMP_HANDLE_SET_AFFREQ_RESP_IDX,
-	FM_AF_JUMP_ENABLE_INT_IDX,
-	FM_AF_JUMP_ENABLE_INT_RESP_IDX,
-	FM_AF_JUMP_START_AFJUMP_IDX,
-	FM_AF_JUMP_HANDLE_START_AFJUMP_RESP_IDX,
-	FM_AF_JUMP_RD_FREQ_IDX,
-	FM_AF_JUMP_RD_FREQ_RESP_IDX,
-	FM_LOW_RSSI_FINISH_IDX,
-
-	/* Interrupt process post action */
-	FM_SEND_INTMSK_CMD_IDX,
-	FM_HANDLE_INTMSK_CMD_RESP_IDX,
-};
-
-/* FM interrupt handler table */
-static int_handler_prototype int_handler_table[] = {
-	fm_irq_send_flag_getcmd,
-	fm_irq_handle_flag_getcmd_resp,
-	fm_irq_handle_hw_malfunction,
-	fm_irq_handle_rds_start, /* RDS threshold reached irq handler */
-	fm_irq_send_rdsdata_getcmd,
-	fm_irq_handle_rdsdata_getcmd_resp,
-	fm_irq_handle_rds_finish,
-	fm_irq_handle_tune_op_ended,
-	fm_irq_handle_power_enb, /* TX power enable irq handler */
-	fm_irq_handle_low_rssi_start,
-	fm_irq_afjump_set_pi,
-	fm_irq_handle_set_pi_resp,
-	fm_irq_afjump_set_pimask,
-	fm_irq_handle_set_pimask_resp,
-	fm_irq_afjump_setfreq,
-	fm_irq_handle_setfreq_resp,
-	fm_irq_afjump_enableint,
-	fm_irq_afjump_enableint_resp,
-	fm_irq_start_afjump,
-	fm_irq_handle_start_afjump_resp,
-	fm_irq_afjump_rd_freq,
-	fm_irq_afjump_rd_freq_resp,
-	fm_irq_handle_low_rssi_finish,
-	fm_irq_send_intmsk_cmd, /* Interrupt process post action */
-	fm_irq_handle_intmsk_cmd_resp
-};
-
-static long (*g_st_write) (struct sk_buff *skb);
-static struct completion wait_for_fmdrv_reg_comp;
-
-static inline void fm_irq_call(struct fmdev *fmdev)
-{
-	fmdev->irq_info.handlers[fmdev->irq_info.stage](fmdev);
-}
-
-/* Continue next function in interrupt handler table */
-static inline void fm_irq_call_stage(struct fmdev *fmdev, u8 stage)
-{
-	fmdev->irq_info.stage = stage;
-	fm_irq_call(fmdev);
-}
-
-static inline void fm_irq_timeout_stage(struct fmdev *fmdev, u8 stage)
-{
-	fmdev->irq_info.stage = stage;
-	mod_timer(&fmdev->irq_info.timer, jiffies + FM_DRV_TX_TIMEOUT);
-}
-
-#ifdef FM_DUMP_TXRX_PKT
- /* To dump outgoing FM Channel-8 packets */
-inline void dump_tx_skb_data(struct sk_buff *skb)
-{
-	int len, len_org;
-	u8 index;
-	struct fm_cmd_msg_hdr *cmd_hdr;
-
-	cmd_hdr = (struct fm_cmd_msg_hdr *)skb->data;
-	printk(KERN_INFO "<<%shdr:%02x len:%02x opcode:%02x type:%s dlen:%02x",
-	       fm_cb(skb)->completion ? " " : "*", cmd_hdr->hdr,
-	       cmd_hdr->len, cmd_hdr->op,
-	       cmd_hdr->rd_wr ? "RD" : "WR", cmd_hdr->dlen);
-
-	len_org = skb->len - FM_CMD_MSG_HDR_SIZE;
-	if (len_org > 0) {
-		printk(KERN_CONT "\n   data(%d): ", cmd_hdr->dlen);
-		len = min(len_org, 14);
-		for (index = 0; index < len; index++)
-			printk(KERN_CONT "%x ",
-			       skb->data[FM_CMD_MSG_HDR_SIZE + index]);
-		printk(KERN_CONT "%s", (len_org > 14) ? ".." : "");
-	}
-	printk(KERN_CONT "\n");
-}
-
- /* To dump incoming FM Channel-8 packets */
-inline void dump_rx_skb_data(struct sk_buff *skb)
-{
-	int len, len_org;
-	u8 index;
-	struct fm_event_msg_hdr *evt_hdr;
-
-	evt_hdr = (struct fm_event_msg_hdr *)skb->data;
-	printk(KERN_INFO ">> hdr:%02x len:%02x sts:%02x numhci:%02x opcode:%02x type:%s dlen:%02x",
-	       evt_hdr->hdr, evt_hdr->len,
-	       evt_hdr->status, evt_hdr->num_fm_hci_cmds, evt_hdr->op,
-	       (evt_hdr->rd_wr) ? "RD" : "WR", evt_hdr->dlen);
-
-	len_org = skb->len - FM_EVT_MSG_HDR_SIZE;
-	if (len_org > 0) {
-		printk(KERN_CONT "\n   data(%d): ", evt_hdr->dlen);
-		len = min(len_org, 14);
-		for (index = 0; index < len; index++)
-			printk(KERN_CONT "%x ",
-			       skb->data[FM_EVT_MSG_HDR_SIZE + index]);
-		printk(KERN_CONT "%s", (len_org > 14) ? ".." : "");
-	}
-	printk(KERN_CONT "\n");
-}
-#endif
-
-void fmc_update_region_info(struct fmdev *fmdev, u8 region_to_set)
-{
-	fmdev->rx.region = region_configs[region_to_set];
-}
-
-/*
- * FM common sub-module will queue this bh work whenever it receives
- * FM packet from ST driver.
- */
-static void recv_bh_work(struct work_struct *t)
-{
-	struct fmdev *fmdev;
-	struct fm_irq *irq_info;
-	struct fm_event_msg_hdr *evt_hdr;
-	struct sk_buff *skb;
-	u8 num_fm_hci_cmds;
-	unsigned long flags;
-
-	fmdev = from_work(fmdev, t, tx_bh_work);
-	irq_info = &fmdev->irq_info;
-	/* Process all packets in the RX queue */
-	while ((skb = skb_dequeue(&fmdev->rx_q))) {
-		if (skb->len < sizeof(struct fm_event_msg_hdr)) {
-			fmerr("skb(%p) has only %d bytes, at least need %zu bytes to decode\n",
-			      skb,
-			      skb->len, sizeof(struct fm_event_msg_hdr));
-			kfree_skb(skb);
-			continue;
-		}
-
-		evt_hdr = (void *)skb->data;
-		num_fm_hci_cmds = evt_hdr->num_fm_hci_cmds;
-
-		/* FM interrupt packet? */
-		if (evt_hdr->op == FM_INTERRUPT) {
-			/* FM interrupt handler started already? */
-			if (!test_bit(FM_INTTASK_RUNNING, &fmdev->flag)) {
-				set_bit(FM_INTTASK_RUNNING, &fmdev->flag);
-				if (irq_info->stage != 0) {
-					fmerr("Inval stage resetting to zero\n");
-					irq_info->stage = 0;
-				}
-
-				/*
-				 * Execute first function in interrupt handler
-				 * table.
-				 */
-				irq_info->handlers[irq_info->stage](fmdev);
-			} else {
-				set_bit(FM_INTTASK_SCHEDULE_PENDING, &fmdev->flag);
-			}
-			kfree_skb(skb);
-		}
-		/* Anyone waiting for this with completion handler? */
-		else if (evt_hdr->op == fmdev->pre_op && fmdev->resp_comp != NULL) {
-
-			spin_lock_irqsave(&fmdev->resp_skb_lock, flags);
-			fmdev->resp_skb = skb;
-			spin_unlock_irqrestore(&fmdev->resp_skb_lock, flags);
-			complete(fmdev->resp_comp);
-
-			fmdev->resp_comp = NULL;
-			atomic_set(&fmdev->tx_cnt, 1);
-		}
-		/* Is this for interrupt handler? */
-		else if (evt_hdr->op == fmdev->pre_op && fmdev->resp_comp == NULL) {
-			if (fmdev->resp_skb != NULL)
-				fmerr("Response SKB ptr not NULL\n");
-
-			spin_lock_irqsave(&fmdev->resp_skb_lock, flags);
-			fmdev->resp_skb = skb;
-			spin_unlock_irqrestore(&fmdev->resp_skb_lock, flags);
-
-			/* Execute interrupt handler where state index points */
-			irq_info->handlers[irq_info->stage](fmdev);
-
-			kfree_skb(skb);
-			atomic_set(&fmdev->tx_cnt, 1);
-		} else {
-			fmerr("Nobody claimed SKB(%p),purging\n", skb);
-		}
-
-		/*
-		 * Check flow control field. If Num_FM_HCI_Commands field is
-		 * not zero, queue FM TX bh work.
-		 */
-		if (num_fm_hci_cmds && atomic_read(&fmdev->tx_cnt))
-			if (!skb_queue_empty(&fmdev->tx_q))
-				queue_work(system_bh_wq, &fmdev->tx_bh_work);
-	}
-}
-
-/* FM send_bh_work: is scheduled when FM packet has to be sent to chip */
-static void send_bh_work(struct work_struct *t)
-{
-	struct fmdev *fmdev;
-	struct sk_buff *skb;
-	int len;
-
-	fmdev = from_work(fmdev, t, tx_bh_work);
-
-	if (!atomic_read(&fmdev->tx_cnt))
-		return;
-
-	/* Check, is there any timeout happened to last transmitted packet */
-	if (time_is_before_jiffies(fmdev->last_tx_jiffies + FM_DRV_TX_TIMEOUT)) {
-		fmerr("TX timeout occurred\n");
-		atomic_set(&fmdev->tx_cnt, 1);
-	}
-
-	/* Send queued FM TX packets */
-	skb = skb_dequeue(&fmdev->tx_q);
-	if (!skb)
-		return;
-
-	atomic_dec(&fmdev->tx_cnt);
-	fmdev->pre_op = fm_cb(skb)->fm_op;
-
-	if (fmdev->resp_comp != NULL)
-		fmerr("Response completion handler is not NULL\n");
-
-	fmdev->resp_comp = fm_cb(skb)->completion;
-
-	/* Write FM packet to ST driver */
-	len = g_st_write(skb);
-	if (len < 0) {
-		kfree_skb(skb);
-		fmdev->resp_comp = NULL;
-		fmerr("TX bh work failed to send skb(%p)\n", skb);
-		atomic_set(&fmdev->tx_cnt, 1);
-	} else {
-		fmdev->last_tx_jiffies = jiffies;
-	}
-}
-
-/*
- * Queues FM Channel-8 packet to FM TX queue and schedules FM TX bh work for
- * transmission
- */
-static int fm_send_cmd(struct fmdev *fmdev, u8 fm_op, u16 type,	void *payload,
-		int payload_len, struct completion *wait_completion)
-{
-	struct sk_buff *skb;
-	struct fm_cmd_msg_hdr *hdr;
-	int size;
-
-	if (fm_op >= FM_INTERRUPT) {
-		fmerr("Invalid fm opcode - %d\n", fm_op);
-		return -EINVAL;
-	}
-	if (test_bit(FM_FW_DW_INPROGRESS, &fmdev->flag) && payload == NULL) {
-		fmerr("Payload data is NULL during fw download\n");
-		return -EINVAL;
-	}
-	if (!test_bit(FM_FW_DW_INPROGRESS, &fmdev->flag))
-		size =
-		    FM_CMD_MSG_HDR_SIZE + ((payload == NULL) ? 0 : payload_len);
-	else
-		size = payload_len;
-
-	skb = alloc_skb(size, GFP_ATOMIC);
-	if (!skb) {
-		fmerr("No memory to create new SKB\n");
-		return -ENOMEM;
-	}
-	/*
-	 * Don't fill FM header info for the commands which come from
-	 * FM firmware file.
-	 */
-	if (!test_bit(FM_FW_DW_INPROGRESS, &fmdev->flag) ||
-			test_bit(FM_INTTASK_RUNNING, &fmdev->flag)) {
-		/* Fill command header info */
-		hdr = skb_put(skb, FM_CMD_MSG_HDR_SIZE);
-		hdr->hdr = FM_PKT_LOGICAL_CHAN_NUMBER;	/* 0x08 */
-
-		/* 3 (fm_opcode,rd_wr,dlen) + payload len) */
-		hdr->len = ((payload == NULL) ? 0 : payload_len) + 3;
-
-		/* FM opcode */
-		hdr->op = fm_op;
-
-		/* read/write type */
-		hdr->rd_wr = type;
-		hdr->dlen = payload_len;
-		fm_cb(skb)->fm_op = fm_op;
-
-		/*
-		 * If firmware download has finished and the command is
-		 * not a read command then payload is != NULL - a write
-		 * command with u16 payload - convert to be16
-		 */
-		if (payload != NULL)
-			*(__be16 *)payload = cpu_to_be16(*(u16 *)payload);
-
-	} else if (payload != NULL) {
-		fm_cb(skb)->fm_op = *((u8 *)payload + 2);
-	}
-	if (payload != NULL)
-		skb_put_data(skb, payload, payload_len);
-
-	fm_cb(skb)->completion = wait_completion;
-	skb_queue_tail(&fmdev->tx_q, skb);
-	queue_work(system_bh_wq, &fmdev->tx_bh_work);
-
-	return 0;
-}
-
-/* Sends FM Channel-8 command to the chip and waits for the response */
-int fmc_send_cmd(struct fmdev *fmdev, u8 fm_op, u16 type, void *payload,
-		unsigned int payload_len, void *response, int *response_len)
-{
-	struct sk_buff *skb;
-	struct fm_event_msg_hdr *evt_hdr;
-	unsigned long flags;
-	int ret;
-
-	init_completion(&fmdev->maintask_comp);
-	ret = fm_send_cmd(fmdev, fm_op, type, payload, payload_len,
-			    &fmdev->maintask_comp);
-	if (ret)
-		return ret;
-
-	if (!wait_for_completion_timeout(&fmdev->maintask_comp,
-					 FM_DRV_TX_TIMEOUT)) {
-		fmerr("Timeout(%d sec),didn't get regcompletion signal from RX bh work\n",
-			   jiffies_to_msecs(FM_DRV_TX_TIMEOUT) / 1000);
-		return -ETIMEDOUT;
-	}
-	spin_lock_irqsave(&fmdev->resp_skb_lock, flags);
-	if (!fmdev->resp_skb) {
-		spin_unlock_irqrestore(&fmdev->resp_skb_lock, flags);
-		fmerr("Response SKB is missing\n");
-		return -EFAULT;
-	}
-	skb = fmdev->resp_skb;
-	fmdev->resp_skb = NULL;
-	spin_unlock_irqrestore(&fmdev->resp_skb_lock, flags);
-
-	evt_hdr = (void *)skb->data;
-	if (evt_hdr->status != 0) {
-		fmerr("Received event pkt status(%d) is not zero\n",
-			   evt_hdr->status);
-		kfree_skb(skb);
-		return -EIO;
-	}
-	/* Send response data to caller */
-	if (response != NULL && response_len != NULL && evt_hdr->dlen &&
-	    evt_hdr->dlen <= payload_len) {
-		/* Skip header info and copy only response data */
-		skb_pull(skb, sizeof(struct fm_event_msg_hdr));
-		memcpy(response, skb->data, evt_hdr->dlen);
-		*response_len = evt_hdr->dlen;
-	} else if (response_len != NULL && evt_hdr->dlen == 0) {
-		*response_len = 0;
-	}
-	kfree_skb(skb);
-
-	return 0;
-}
-
-/* --- Helper functions used in FM interrupt handlers ---*/
-static inline int check_cmdresp_status(struct fmdev *fmdev,
-		struct sk_buff **skb)
-{
-	struct fm_event_msg_hdr *fm_evt_hdr;
-	unsigned long flags;
-
-	del_timer(&fmdev->irq_info.timer);
-
-	spin_lock_irqsave(&fmdev->resp_skb_lock, flags);
-	*skb = fmdev->resp_skb;
-	fmdev->resp_skb = NULL;
-	spin_unlock_irqrestore(&fmdev->resp_skb_lock, flags);
-
-	fm_evt_hdr = (void *)(*skb)->data;
-	if (fm_evt_hdr->status != 0) {
-		fmerr("irq: opcode %x response status is not zero Initiating irq recovery process\n",
-				fm_evt_hdr->op);
-
-		mod_timer(&fmdev->irq_info.timer, jiffies + FM_DRV_TX_TIMEOUT);
-		return -1;
-	}
-
-	return 0;
-}
-
-static inline void fm_irq_common_cmd_resp_helper(struct fmdev *fmdev, u8 stage)
-{
-	struct sk_buff *skb;
-
-	if (!check_cmdresp_status(fmdev, &skb))
-		fm_irq_call_stage(fmdev, stage);
-}
-
-/*
- * Interrupt process timeout handler.
- * One of the irq handler did not get proper response from the chip. So take
- * recovery action here. FM interrupts are disabled in the beginning of
- * interrupt process. Therefore reset stage index to re-enable default
- * interrupts. So that next interrupt will be processed as usual.
- */
-static void int_timeout_handler(struct timer_list *t)
-{
-	struct fmdev *fmdev;
-	struct fm_irq *fmirq;
-
-	fmdbg("irq: timeout,trying to re-enable fm interrupts\n");
-	fmdev = from_timer(fmdev, t, irq_info.timer);
-	fmirq = &fmdev->irq_info;
-	fmirq->retry++;
-
-	if (fmirq->retry > FM_IRQ_TIMEOUT_RETRY_MAX) {
-		/* Stop recovery action (interrupt reenable process) and
-		 * reset stage index & retry count values */
-		fmirq->stage = 0;
-		fmirq->retry = 0;
-		fmerr("Recovery action failed duringirq processing, max retry reached\n");
-		return;
-	}
-	fm_irq_call_stage(fmdev, FM_SEND_INTMSK_CMD_IDX);
-}
-
-/* --------- FM interrupt handlers ------------*/
-static void fm_irq_send_flag_getcmd(struct fmdev *fmdev)
-{
-	u16 flag;
-
-	/* Send FLAG_GET command , to know the source of interrupt */
-	if (!fm_send_cmd(fmdev, FLAG_GET, REG_RD, NULL, sizeof(flag), NULL))
-		fm_irq_timeout_stage(fmdev, FM_HANDLE_FLAG_GETCMD_RESP_IDX);
-}
-
-static void fm_irq_handle_flag_getcmd_resp(struct fmdev *fmdev)
-{
-	struct sk_buff *skb;
-	struct fm_event_msg_hdr *fm_evt_hdr;
-
-	if (check_cmdresp_status(fmdev, &skb))
-		return;
-
-	fm_evt_hdr = (void *)skb->data;
-	if (fm_evt_hdr->dlen > sizeof(fmdev->irq_info.flag))
-		return;
-
-	/* Skip header info and copy only response data */
-	skb_pull(skb, sizeof(struct fm_event_msg_hdr));
-	memcpy(&fmdev->irq_info.flag, skb->data, fm_evt_hdr->dlen);
-
-	fmdev->irq_info.flag = be16_to_cpu((__force __be16)fmdev->irq_info.flag);
-	fmdbg("irq: flag register(0x%x)\n", fmdev->irq_info.flag);
-
-	/* Continue next function in interrupt handler table */
-	fm_irq_call_stage(fmdev, FM_HW_MAL_FUNC_IDX);
-}
-
-static void fm_irq_handle_hw_malfunction(struct fmdev *fmdev)
-{
-	if (fmdev->irq_info.flag & FM_MAL_EVENT & fmdev->irq_info.mask)
-		fmerr("irq: HW MAL int received - do nothing\n");
-
-	/* Continue next function in interrupt handler table */
-	fm_irq_call_stage(fmdev, FM_RDS_START_IDX);
-}
-
-static void fm_irq_handle_rds_start(struct fmdev *fmdev)
-{
-	if (fmdev->irq_info.flag & FM_RDS_EVENT & fmdev->irq_info.mask) {
-		fmdbg("irq: rds threshold reached\n");
-		fmdev->irq_info.stage = FM_RDS_SEND_RDS_GETCMD_IDX;
-	} else {
-		/* Continue next function in interrupt handler table */
-		fmdev->irq_info.stage = FM_HW_TUNE_OP_ENDED_IDX;
-	}
-
-	fm_irq_call(fmdev);
-}
-
-static void fm_irq_send_rdsdata_getcmd(struct fmdev *fmdev)
-{
-	/* Send the command to read RDS data from the chip */
-	if (!fm_send_cmd(fmdev, RDS_DATA_GET, REG_RD, NULL,
-			    (FM_RX_RDS_FIFO_THRESHOLD * 3), NULL))
-		fm_irq_timeout_stage(fmdev, FM_RDS_HANDLE_RDS_GETCMD_RESP_IDX);
-}
-
-/* Keeps track of current RX channel AF (Alternate Frequency) */
-static void fm_rx_update_af_cache(struct fmdev *fmdev, u8 af)
-{
-	struct tuned_station_info *stat_info = &fmdev->rx.stat_info;
-	u8 reg_idx = fmdev->rx.region.fm_band;
-	u8 index;
-	u32 freq;
-
-	/* First AF indicates the number of AF follows. Reset the list */
-	if ((af >= FM_RDS_1_AF_FOLLOWS) && (af <= FM_RDS_25_AF_FOLLOWS)) {
-		fmdev->rx.stat_info.af_list_max = (af - FM_RDS_1_AF_FOLLOWS + 1);
-		fmdev->rx.stat_info.afcache_size = 0;
-		fmdbg("No of expected AF : %d\n", fmdev->rx.stat_info.af_list_max);
-		return;
-	}
-
-	if (af < FM_RDS_MIN_AF)
-		return;
-	if (reg_idx == FM_BAND_EUROPE_US && af > FM_RDS_MAX_AF)
-		return;
-	if (reg_idx == FM_BAND_JAPAN && af > FM_RDS_MAX_AF_JAPAN)
-		return;
-
-	freq = fmdev->rx.region.bot_freq + (af * 100);
-	if (freq == fmdev->rx.freq) {
-		fmdbg("Current freq(%d) is matching with received AF(%d)\n",
-				fmdev->rx.freq, freq);
-		return;
-	}
-	/* Do check in AF cache */
-	for (index = 0; index < stat_info->afcache_size; index++) {
-		if (stat_info->af_cache[index] == freq)
-			break;
-	}
-	/* Reached the limit of the list - ignore the next AF */
-	if (index == stat_info->af_list_max) {
-		fmdbg("AF cache is full\n");
-		return;
-	}
-	/*
-	 * If we reached the end of the list then this AF is not
-	 * in the list - add it.
-	 */
-	if (index == stat_info->afcache_size) {
-		fmdbg("Storing AF %d to cache index %d\n", freq, index);
-		stat_info->af_cache[index] = freq;
-		stat_info->afcache_size++;
-	}
-}
-
-/*
- * Converts RDS buffer data from big endian format
- * to little endian format.
- */
-static void fm_rdsparse_swapbytes(struct fmdev *fmdev,
-		struct fm_rdsdata_format *rds_format)
-{
-	u8 index = 0;
-	u8 *rds_buff;
-
-	/*
-	 * Since in Orca the 2 RDS Data bytes are in little endian and
-	 * in Dolphin they are in big endian, the parsing of the RDS data
-	 * is chip dependent
-	 */
-	if (fmdev->asci_id != 0x6350) {
-		rds_buff = &rds_format->data.groupdatabuff.buff[0];
-		while (index + 1 < FM_RX_RDS_INFO_FIELD_MAX) {
-			swap(rds_buff[index], rds_buff[index + 1]);
-			index += 2;
-		}
-	}
-}
-
-static void fm_irq_handle_rdsdata_getcmd_resp(struct fmdev *fmdev)
-{
-	struct sk_buff *skb;
-	struct fm_rdsdata_format rds_fmt;
-	struct fm_rds *rds = &fmdev->rx.rds;
-	unsigned long group_idx, flags;
-	u8 *rds_data, meta_data, tmpbuf[FM_RDS_BLK_SIZE];
-	u8 type, blk_idx, idx;
-	u16 cur_picode;
-	u32 rds_len;
-
-	if (check_cmdresp_status(fmdev, &skb))
-		return;
-
-	/* Skip header info */
-	skb_pull(skb, sizeof(struct fm_event_msg_hdr));
-	rds_data = skb->data;
-	rds_len = skb->len;
-
-	/* Parse the RDS data */
-	while (rds_len >= FM_RDS_BLK_SIZE) {
-		meta_data = rds_data[2];
-		/* Get the type: 0=A, 1=B, 2=C, 3=C', 4=D, 5=E */
-		type = (meta_data & 0x07);
-
-		/* Transform the blk type into index sequence (0, 1, 2, 3, 4) */
-		blk_idx = (type <= FM_RDS_BLOCK_C ? type : (type - 1));
-		fmdbg("Block index:%d(%s)\n", blk_idx,
-			   (meta_data & FM_RDS_STATUS_ERR_MASK) ? "Bad" : "Ok");
-
-		if ((meta_data & FM_RDS_STATUS_ERR_MASK) != 0)
-			break;
-
-		if (blk_idx > FM_RDS_BLK_IDX_D) {
-			fmdbg("Block sequence mismatch\n");
-			rds->last_blk_idx = -1;
-			break;
-		}
-
-		/* Skip checkword (control) byte and copy only data byte */
-		idx = array_index_nospec(blk_idx * (FM_RDS_BLK_SIZE - 1),
-					 FM_RX_RDS_INFO_FIELD_MAX - (FM_RDS_BLK_SIZE - 1));
-
-		memcpy(&rds_fmt.data.groupdatabuff.buff[idx], rds_data,
-		       FM_RDS_BLK_SIZE - 1);
-
-		rds->last_blk_idx = blk_idx;
-
-		/* If completed a whole group then handle it */
-		if (blk_idx == FM_RDS_BLK_IDX_D) {
-			fmdbg("Good block received\n");
-			fm_rdsparse_swapbytes(fmdev, &rds_fmt);
-
-			/*
-			 * Extract PI code and store in local cache.
-			 * We need this during AF switch processing.
-			 */
-			cur_picode = be16_to_cpu((__force __be16)rds_fmt.data.groupgeneral.pidata);
-			if (fmdev->rx.stat_info.picode != cur_picode)
-				fmdev->rx.stat_info.picode = cur_picode;
-
-			fmdbg("picode:%d\n", cur_picode);
-
-			group_idx = (rds_fmt.data.groupgeneral.blk_b[0] >> 3);
-			fmdbg("(fmdrv):Group:%ld%s\n", group_idx/2,
-					(group_idx % 2) ? "B" : "A");
-
-			group_idx = 1 << (rds_fmt.data.groupgeneral.blk_b[0] >> 3);
-			if (group_idx == FM_RDS_GROUP_TYPE_MASK_0A) {
-				fm_rx_update_af_cache(fmdev, rds_fmt.data.group0A.af[0]);
-				fm_rx_update_af_cache(fmdev, rds_fmt.data.group0A.af[1]);
-			}
-		}
-		rds_len -= FM_RDS_BLK_SIZE;
-		rds_data += FM_RDS_BLK_SIZE;
-	}
-
-	/* Copy raw rds data to internal rds buffer */
-	rds_data = skb->data;
-	rds_len = skb->len;
-
-	spin_lock_irqsave(&fmdev->rds_buff_lock, flags);
-	while (rds_len > 0) {
-		/*
-		 * Fill RDS buffer as per V4L2 specification.
-		 * Store control byte
-		 */
-		type = (rds_data[2] & 0x07);
-		blk_idx = (type <= FM_RDS_BLOCK_C ? type : (type - 1));
-		tmpbuf[2] = blk_idx;	/* Offset name */
-		tmpbuf[2] |= blk_idx << 3;	/* Received offset */
-
-		/* Store data byte */
-		tmpbuf[0] = rds_data[0];
-		tmpbuf[1] = rds_data[1];
-
-		memcpy(&rds->buff[rds->wr_idx], &tmpbuf, FM_RDS_BLK_SIZE);
-		rds->wr_idx = (rds->wr_idx + FM_RDS_BLK_SIZE) % rds->buf_size;
-
-		/* Check for overflow & start over */
-		if (rds->wr_idx == rds->rd_idx) {
-			fmdbg("RDS buffer overflow\n");
-			rds->wr_idx = 0;
-			rds->rd_idx = 0;
-			break;
-		}
-		rds_len -= FM_RDS_BLK_SIZE;
-		rds_data += FM_RDS_BLK_SIZE;
-	}
-	spin_unlock_irqrestore(&fmdev->rds_buff_lock, flags);
-
-	/* Wakeup read queue */
-	if (rds->wr_idx != rds->rd_idx)
-		wake_up_interruptible(&rds->read_queue);
-
-	fm_irq_call_stage(fmdev, FM_RDS_FINISH_IDX);
-}
-
-static void fm_irq_handle_rds_finish(struct fmdev *fmdev)
-{
-	fm_irq_call_stage(fmdev, FM_HW_TUNE_OP_ENDED_IDX);
-}
-
-static void fm_irq_handle_tune_op_ended(struct fmdev *fmdev)
-{
-	if (fmdev->irq_info.flag & (FM_FR_EVENT | FM_BL_EVENT) & fmdev->
-	    irq_info.mask) {
-		fmdbg("irq: tune ended/bandlimit reached\n");
-		if (test_and_clear_bit(FM_AF_SWITCH_INPROGRESS, &fmdev->flag)) {
-			fmdev->irq_info.stage = FM_AF_JUMP_RD_FREQ_IDX;
-		} else {
-			complete(&fmdev->maintask_comp);
-			fmdev->irq_info.stage = FM_HW_POWER_ENB_IDX;
-		}
-	} else
-		fmdev->irq_info.stage = FM_HW_POWER_ENB_IDX;
-
-	fm_irq_call(fmdev);
-}
-
-static void fm_irq_handle_power_enb(struct fmdev *fmdev)
-{
-	if (fmdev->irq_info.flag & FM_POW_ENB_EVENT) {
-		fmdbg("irq: Power Enabled/Disabled\n");
-		complete(&fmdev->maintask_comp);
-	}
-
-	fm_irq_call_stage(fmdev, FM_LOW_RSSI_START_IDX);
-}
-
-static void fm_irq_handle_low_rssi_start(struct fmdev *fmdev)
-{
-	if ((fmdev->rx.af_mode == FM_RX_RDS_AF_SWITCH_MODE_ON) &&
-	    (fmdev->irq_info.flag & FM_LEV_EVENT & fmdev->irq_info.mask) &&
-	    (fmdev->rx.freq != FM_UNDEFINED_FREQ) &&
-	    (fmdev->rx.stat_info.afcache_size != 0)) {
-		fmdbg("irq: rssi level has fallen below threshold level\n");
-
-		/* Disable further low RSSI interrupts */
-		fmdev->irq_info.mask &= ~FM_LEV_EVENT;
-
-		fmdev->rx.afjump_idx = 0;
-		fmdev->rx.freq_before_jump = fmdev->rx.freq;
-		fmdev->irq_info.stage = FM_AF_JUMP_SETPI_IDX;
-	} else {
-		/* Continue next function in interrupt handler table */
-		fmdev->irq_info.stage = FM_SEND_INTMSK_CMD_IDX;
-	}
-
-	fm_irq_call(fmdev);
-}
-
-static void fm_irq_afjump_set_pi(struct fmdev *fmdev)
-{
-	u16 payload;
-
-	/* Set PI code - must be updated if the AF list is not empty */
-	payload = fmdev->rx.stat_info.picode;
-	if (!fm_send_cmd(fmdev, RDS_PI_SET, REG_WR, &payload, sizeof(payload), NULL))
-		fm_irq_timeout_stage(fmdev, FM_AF_JUMP_HANDLE_SETPI_RESP_IDX);
-}
-
-static void fm_irq_handle_set_pi_resp(struct fmdev *fmdev)
-{
-	fm_irq_common_cmd_resp_helper(fmdev, FM_AF_JUMP_SETPI_MASK_IDX);
-}
-
-/*
- * Set PI mask.
- * 0xFFFF = Enable PI code matching
- * 0x0000 = Disable PI code matching
- */
-static void fm_irq_afjump_set_pimask(struct fmdev *fmdev)
-{
-	u16 payload;
-
-	payload = 0x0000;
-	if (!fm_send_cmd(fmdev, RDS_PI_MASK_SET, REG_WR, &payload, sizeof(payload), NULL))
-		fm_irq_timeout_stage(fmdev, FM_AF_JUMP_HANDLE_SETPI_MASK_RESP_IDX);
-}
-
-static void fm_irq_handle_set_pimask_resp(struct fmdev *fmdev)
-{
-	fm_irq_common_cmd_resp_helper(fmdev, FM_AF_JUMP_SET_AF_FREQ_IDX);
-}
-
-static void fm_irq_afjump_setfreq(struct fmdev *fmdev)
-{
-	u16 frq_index;
-	u16 payload;
-
-	fmdbg("Switch to %d KHz\n", fmdev->rx.stat_info.af_cache[fmdev->rx.afjump_idx]);
-	frq_index = (fmdev->rx.stat_info.af_cache[fmdev->rx.afjump_idx] -
-	     fmdev->rx.region.bot_freq) / FM_FREQ_MUL;
-
-	payload = frq_index;
-	if (!fm_send_cmd(fmdev, AF_FREQ_SET, REG_WR, &payload, sizeof(payload), NULL))
-		fm_irq_timeout_stage(fmdev, FM_AF_JUMP_HANDLE_SET_AFFREQ_RESP_IDX);
-}
-
-static void fm_irq_handle_setfreq_resp(struct fmdev *fmdev)
-{
-	fm_irq_common_cmd_resp_helper(fmdev, FM_AF_JUMP_ENABLE_INT_IDX);
-}
-
-static void fm_irq_afjump_enableint(struct fmdev *fmdev)
-{
-	u16 payload;
-
-	/* Enable FR (tuning operation ended) interrupt */
-	payload = FM_FR_EVENT;
-	if (!fm_send_cmd(fmdev, INT_MASK_SET, REG_WR, &payload, sizeof(payload), NULL))
-		fm_irq_timeout_stage(fmdev, FM_AF_JUMP_ENABLE_INT_RESP_IDX);
-}
-
-static void fm_irq_afjump_enableint_resp(struct fmdev *fmdev)
-{
-	fm_irq_common_cmd_resp_helper(fmdev, FM_AF_JUMP_START_AFJUMP_IDX);
-}
-
-static void fm_irq_start_afjump(struct fmdev *fmdev)
-{
-	u16 payload;
-
-	payload = FM_TUNER_AF_JUMP_MODE;
-	if (!fm_send_cmd(fmdev, TUNER_MODE_SET, REG_WR, &payload,
-			sizeof(payload), NULL))
-		fm_irq_timeout_stage(fmdev, FM_AF_JUMP_HANDLE_START_AFJUMP_RESP_IDX);
-}
-
-static void fm_irq_handle_start_afjump_resp(struct fmdev *fmdev)
-{
-	struct sk_buff *skb;
-
-	if (check_cmdresp_status(fmdev, &skb))
-		return;
-
-	fmdev->irq_info.stage = FM_SEND_FLAG_GETCMD_IDX;
-	set_bit(FM_AF_SWITCH_INPROGRESS, &fmdev->flag);
-	clear_bit(FM_INTTASK_RUNNING, &fmdev->flag);
-}
-
-static void fm_irq_afjump_rd_freq(struct fmdev *fmdev)
-{
-	u16 payload;
-
-	if (!fm_send_cmd(fmdev, FREQ_SET, REG_RD, NULL, sizeof(payload), NULL))
-		fm_irq_timeout_stage(fmdev, FM_AF_JUMP_RD_FREQ_RESP_IDX);
-}
-
-static void fm_irq_afjump_rd_freq_resp(struct fmdev *fmdev)
-{
-	struct sk_buff *skb;
-	u16 read_freq;
-	u32 curr_freq, jumped_freq;
-
-	if (check_cmdresp_status(fmdev, &skb))
-		return;
-
-	/* Skip header info and copy only response data */
-	skb_pull(skb, sizeof(struct fm_event_msg_hdr));
-	memcpy(&read_freq, skb->data, sizeof(read_freq));
-	read_freq = be16_to_cpu((__force __be16)read_freq);
-	curr_freq = fmdev->rx.region.bot_freq + ((u32)read_freq * FM_FREQ_MUL);
-
-	jumped_freq = fmdev->rx.stat_info.af_cache[fmdev->rx.afjump_idx];
-
-	/* If the frequency was changed the jump succeeded */
-	if ((curr_freq != fmdev->rx.freq_before_jump) && (curr_freq == jumped_freq)) {
-		fmdbg("Successfully switched to alternate freq %d\n", curr_freq);
-		fmdev->rx.freq = curr_freq;
-		fm_rx_reset_rds_cache(fmdev);
-
-		/* AF feature is on, enable low level RSSI interrupt */
-		if (fmdev->rx.af_mode == FM_RX_RDS_AF_SWITCH_MODE_ON)
-			fmdev->irq_info.mask |= FM_LEV_EVENT;
-
-		fmdev->irq_info.stage = FM_LOW_RSSI_FINISH_IDX;
-	} else {		/* jump to the next freq in the AF list */
-		fmdev->rx.afjump_idx++;
-
-		/* If we reached the end of the list - stop searching */
-		if (fmdev->rx.afjump_idx >= fmdev->rx.stat_info.afcache_size) {
-			fmdbg("AF switch processing failed\n");
-			fmdev->irq_info.stage = FM_LOW_RSSI_FINISH_IDX;
-		} else {	/* AF List is not over - try next one */
-
-			fmdbg("Trying next freq in AF cache\n");
-			fmdev->irq_info.stage = FM_AF_JUMP_SETPI_IDX;
-		}
-	}
-	fm_irq_call(fmdev);
-}
-
-static void fm_irq_handle_low_rssi_finish(struct fmdev *fmdev)
-{
-	fm_irq_call_stage(fmdev, FM_SEND_INTMSK_CMD_IDX);
-}
-
-static void fm_irq_send_intmsk_cmd(struct fmdev *fmdev)
-{
-	u16 payload;
-
-	/* Re-enable FM interrupts */
-	payload = fmdev->irq_info.mask;
-
-	if (!fm_send_cmd(fmdev, INT_MASK_SET, REG_WR, &payload,
-			sizeof(payload), NULL))
-		fm_irq_timeout_stage(fmdev, FM_HANDLE_INTMSK_CMD_RESP_IDX);
-}
-
-static void fm_irq_handle_intmsk_cmd_resp(struct fmdev *fmdev)
-{
-	struct sk_buff *skb;
-
-	if (check_cmdresp_status(fmdev, &skb))
-		return;
-	/*
-	 * This is last function in interrupt table to be executed.
-	 * So, reset stage index to 0.
-	 */
-	fmdev->irq_info.stage = FM_SEND_FLAG_GETCMD_IDX;
-
-	/* Start processing any pending interrupt */
-	if (test_and_clear_bit(FM_INTTASK_SCHEDULE_PENDING, &fmdev->flag))
-		fmdev->irq_info.handlers[fmdev->irq_info.stage](fmdev);
-	else
-		clear_bit(FM_INTTASK_RUNNING, &fmdev->flag);
-}
-
-/* Returns availability of RDS data in internal buffer */
-int fmc_is_rds_data_available(struct fmdev *fmdev, struct file *file,
-				struct poll_table_struct *pts)
-{
-	poll_wait(file, &fmdev->rx.rds.read_queue, pts);
-	if (fmdev->rx.rds.rd_idx != fmdev->rx.rds.wr_idx)
-		return 0;
-
-	return -EAGAIN;
-}
-
-/* Copies RDS data from internal buffer to user buffer */
-int fmc_transfer_rds_from_internal_buff(struct fmdev *fmdev, struct file *file,
-		u8 __user *buf, size_t count)
-{
-	u32 block_count;
-	u8 tmpbuf[FM_RDS_BLK_SIZE];
-	unsigned long flags;
-	int ret;
-
-	if (fmdev->rx.rds.wr_idx == fmdev->rx.rds.rd_idx) {
-		if (file->f_flags & O_NONBLOCK)
-			return -EWOULDBLOCK;
-
-		ret = wait_event_interruptible(fmdev->rx.rds.read_queue,
-				(fmdev->rx.rds.wr_idx != fmdev->rx.rds.rd_idx));
-		if (ret)
-			return -EINTR;
-	}
-
-	/* Calculate block count from byte count */
-	count /= FM_RDS_BLK_SIZE;
-	block_count = 0;
-	ret = 0;
-
-	while (block_count < count) {
-		spin_lock_irqsave(&fmdev->rds_buff_lock, flags);
-
-		if (fmdev->rx.rds.wr_idx == fmdev->rx.rds.rd_idx) {
-			spin_unlock_irqrestore(&fmdev->rds_buff_lock, flags);
-			break;
-		}
-		memcpy(tmpbuf, &fmdev->rx.rds.buff[fmdev->rx.rds.rd_idx],
-					FM_RDS_BLK_SIZE);
-		fmdev->rx.rds.rd_idx += FM_RDS_BLK_SIZE;
-		if (fmdev->rx.rds.rd_idx >= fmdev->rx.rds.buf_size)
-			fmdev->rx.rds.rd_idx = 0;
-
-		spin_unlock_irqrestore(&fmdev->rds_buff_lock, flags);
-
-		if (copy_to_user(buf, tmpbuf, FM_RDS_BLK_SIZE))
-			break;
-
-		block_count++;
-		buf += FM_RDS_BLK_SIZE;
-		ret += FM_RDS_BLK_SIZE;
-	}
-	return ret;
-}
-
-int fmc_set_freq(struct fmdev *fmdev, u32 freq_to_set)
-{
-	switch (fmdev->curr_fmmode) {
-	case FM_MODE_RX:
-		return fm_rx_set_freq(fmdev, freq_to_set);
-
-	case FM_MODE_TX:
-		return fm_tx_set_freq(fmdev, freq_to_set);
-
-	default:
-		return -EINVAL;
-	}
-}
-
-int fmc_get_freq(struct fmdev *fmdev, u32 *cur_tuned_frq)
-{
-	if (fmdev->rx.freq == FM_UNDEFINED_FREQ) {
-		fmerr("RX frequency is not set\n");
-		return -EPERM;
-	}
-	if (cur_tuned_frq == NULL) {
-		fmerr("Invalid memory\n");
-		return -ENOMEM;
-	}
-
-	switch (fmdev->curr_fmmode) {
-	case FM_MODE_RX:
-		*cur_tuned_frq = fmdev->rx.freq;
-		return 0;
-
-	case FM_MODE_TX:
-		*cur_tuned_frq = 0;	/* TODO : Change this later */
-		return 0;
-
-	default:
-		return -EINVAL;
-	}
-
-}
-
-int fmc_set_region(struct fmdev *fmdev, u8 region_to_set)
-{
-	switch (fmdev->curr_fmmode) {
-	case FM_MODE_RX:
-		return fm_rx_set_region(fmdev, region_to_set);
-
-	case FM_MODE_TX:
-		return fm_tx_set_region(fmdev, region_to_set);
-
-	default:
-		return -EINVAL;
-	}
-}
-
-int fmc_set_mute_mode(struct fmdev *fmdev, u8 mute_mode_toset)
-{
-	switch (fmdev->curr_fmmode) {
-	case FM_MODE_RX:
-		return fm_rx_set_mute_mode(fmdev, mute_mode_toset);
-
-	case FM_MODE_TX:
-		return fm_tx_set_mute_mode(fmdev, mute_mode_toset);
-
-	default:
-		return -EINVAL;
-	}
-}
-
-int fmc_set_stereo_mono(struct fmdev *fmdev, u16 mode)
-{
-	switch (fmdev->curr_fmmode) {
-	case FM_MODE_RX:
-		return fm_rx_set_stereo_mono(fmdev, mode);
-
-	case FM_MODE_TX:
-		return fm_tx_set_stereo_mono(fmdev, mode);
-
-	default:
-		return -EINVAL;
-	}
-}
-
-int fmc_set_rds_mode(struct fmdev *fmdev, u8 rds_en_dis)
-{
-	switch (fmdev->curr_fmmode) {
-	case FM_MODE_RX:
-		return fm_rx_set_rds_mode(fmdev, rds_en_dis);
-
-	case FM_MODE_TX:
-		return fm_tx_set_rds_mode(fmdev, rds_en_dis);
-
-	default:
-		return -EINVAL;
-	}
-}
-
-/* Sends power off command to the chip */
-static int fm_power_down(struct fmdev *fmdev)
-{
-	u16 payload;
-	int ret;
-
-	if (!test_bit(FM_CORE_READY, &fmdev->flag)) {
-		fmerr("FM core is not ready\n");
-		return -EPERM;
-	}
-	if (fmdev->curr_fmmode == FM_MODE_OFF) {
-		fmdbg("FM chip is already in OFF state\n");
-		return 0;
-	}
-
-	payload = 0x0;
-	ret = fmc_send_cmd(fmdev, FM_POWER_MODE, REG_WR, &payload,
-		sizeof(payload), NULL, NULL);
-	if (ret < 0)
-		return ret;
-
-	return fmc_release(fmdev);
-}
-
-/* Reads init command from FM firmware file and loads to the chip */
-static int fm_download_firmware(struct fmdev *fmdev, const u8 *fw_name)
-{
-	const struct firmware *fw_entry;
-	struct bts_header *fw_header;
-	struct bts_action *action;
-	struct bts_action_delay *delay;
-	u8 *fw_data;
-	int ret, fw_len;
-
-	set_bit(FM_FW_DW_INPROGRESS, &fmdev->flag);
-
-	ret = request_firmware(&fw_entry, fw_name,
-				&fmdev->radio_dev->dev);
-	if (ret < 0) {
-		fmerr("Unable to read firmware(%s) content\n", fw_name);
-		return ret;
-	}
-	fmdbg("Firmware(%s) length : %zu bytes\n", fw_name, fw_entry->size);
-
-	fw_data = (void *)fw_entry->data;
-	fw_len = fw_entry->size;
-
-	fw_header = (struct bts_header *)fw_data;
-	if (fw_header->magic != FM_FW_FILE_HEADER_MAGIC) {
-		fmerr("%s not a legal TI firmware file\n", fw_name);
-		ret = -EINVAL;
-		goto rel_fw;
-	}
-	fmdbg("FW(%s) magic number : 0x%x\n", fw_name, fw_header->magic);
-
-	/* Skip file header info , we already verified it */
-	fw_data += sizeof(struct bts_header);
-	fw_len -= sizeof(struct bts_header);
-
-	while (fw_data && fw_len > 0) {
-		action = (struct bts_action *)fw_data;
-
-		switch (action->type) {
-		case ACTION_SEND_COMMAND:	/* Send */
-			ret = fmc_send_cmd(fmdev, 0, 0, action->data,
-					   action->size, NULL, NULL);
-			if (ret)
-				goto rel_fw;
-
-			break;
-
-		case ACTION_DELAY:	/* Delay */
-			delay = (struct bts_action_delay *)action->data;
-			mdelay(delay->msec);
-			break;
-		}
-
-		fw_data += (sizeof(struct bts_action) + (action->size));
-		fw_len -= (sizeof(struct bts_action) + (action->size));
-	}
-	fmdbg("Transferred only %d of %d bytes of the firmware to chip\n",
-	      fw_entry->size - fw_len, fw_entry->size);
-rel_fw:
-	release_firmware(fw_entry);
-	clear_bit(FM_FW_DW_INPROGRESS, &fmdev->flag);
-
-	return ret;
-}
-
-/* Loads default RX configuration to the chip */
-static int load_default_rx_configuration(struct fmdev *fmdev)
-{
-	int ret;
-
-	ret = fm_rx_set_volume(fmdev, FM_DEFAULT_RX_VOLUME);
-	if (ret < 0)
-		return ret;
-
-	return fm_rx_set_rssi_threshold(fmdev, FM_DEFAULT_RSSI_THRESHOLD);
-}
-
-/* Does FM power on sequence */
-static int fm_power_up(struct fmdev *fmdev, u8 mode)
-{
-	u16 payload;
-	__be16 asic_id = 0, asic_ver = 0;
-	int resp_len, ret;
-	u8 fw_name[50];
-
-	if (mode >= FM_MODE_ENTRY_MAX) {
-		fmerr("Invalid firmware download option\n");
-		return -EINVAL;
-	}
-
-	/*
-	 * Initialize FM common module. FM GPIO toggling is
-	 * taken care in Shared Transport driver.
-	 */
-	ret = fmc_prepare(fmdev);
-	if (ret < 0) {
-		fmerr("Unable to prepare FM Common\n");
-		return ret;
-	}
-
-	payload = FM_ENABLE;
-	if (fmc_send_cmd(fmdev, FM_POWER_MODE, REG_WR, &payload,
-			sizeof(payload), NULL, NULL))
-		goto rel;
-
-	/* Allow the chip to settle down in Channel-8 mode */
-	msleep(20);
-
-	if (fmc_send_cmd(fmdev, ASIC_ID_GET, REG_RD, NULL,
-			sizeof(asic_id), &asic_id, &resp_len))
-		goto rel;
-
-	if (fmc_send_cmd(fmdev, ASIC_VER_GET, REG_RD, NULL,
-			sizeof(asic_ver), &asic_ver, &resp_len))
-		goto rel;
-
-	fmdbg("ASIC ID: 0x%x , ASIC Version: %d\n",
-		be16_to_cpu(asic_id), be16_to_cpu(asic_ver));
-
-	sprintf(fw_name, "%s_%x.%d.bts", FM_FMC_FW_FILE_START,
-		be16_to_cpu(asic_id), be16_to_cpu(asic_ver));
-
-	ret = fm_download_firmware(fmdev, fw_name);
-	if (ret < 0) {
-		fmdbg("Failed to download firmware file %s\n", fw_name);
-		goto rel;
-	}
-	sprintf(fw_name, "%s_%x.%d.bts", (mode == FM_MODE_RX) ?
-			FM_RX_FW_FILE_START : FM_TX_FW_FILE_START,
-			be16_to_cpu(asic_id), be16_to_cpu(asic_ver));
-
-	ret = fm_download_firmware(fmdev, fw_name);
-	if (ret < 0) {
-		fmdbg("Failed to download firmware file %s\n", fw_name);
-		goto rel;
-	} else
-		return ret;
-rel:
-	return fmc_release(fmdev);
-}
-
-/* Set FM Modes(TX, RX, OFF) */
-int fmc_set_mode(struct fmdev *fmdev, u8 fm_mode)
-{
-	int ret = 0;
-
-	if (fm_mode >= FM_MODE_ENTRY_MAX) {
-		fmerr("Invalid FM mode\n");
-		return -EINVAL;
-	}
-	if (fmdev->curr_fmmode == fm_mode) {
-		fmdbg("Already fm is in mode(%d)\n", fm_mode);
-		return ret;
-	}
-
-	switch (fm_mode) {
-	case FM_MODE_OFF:	/* OFF Mode */
-		ret = fm_power_down(fmdev);
-		if (ret < 0) {
-			fmerr("Failed to set OFF mode\n");
-			return ret;
-		}
-		break;
-
-	case FM_MODE_TX:	/* TX Mode */
-	case FM_MODE_RX:	/* RX Mode */
-		/* Power down before switching to TX or RX mode */
-		if (fmdev->curr_fmmode != FM_MODE_OFF) {
-			ret = fm_power_down(fmdev);
-			if (ret < 0) {
-				fmerr("Failed to set OFF mode\n");
-				return ret;
-			}
-			msleep(30);
-		}
-		ret = fm_power_up(fmdev, fm_mode);
-		if (ret < 0) {
-			fmerr("Failed to load firmware\n");
-			return ret;
-		}
-	}
-	fmdev->curr_fmmode = fm_mode;
-
-	/* Set default configuration */
-	if (fmdev->curr_fmmode == FM_MODE_RX) {
-		fmdbg("Loading default rx configuration..\n");
-		ret = load_default_rx_configuration(fmdev);
-		if (ret < 0)
-			fmerr("Failed to load default values\n");
-	}
-
-	return ret;
-}
-
-/* Returns current FM mode (TX, RX, OFF) */
-int fmc_get_mode(struct fmdev *fmdev, u8 *fmmode)
-{
-	if (!test_bit(FM_CORE_READY, &fmdev->flag)) {
-		fmerr("FM core is not ready\n");
-		return -EPERM;
-	}
-	if (fmmode == NULL) {
-		fmerr("Invalid memory\n");
-		return -ENOMEM;
-	}
-
-	*fmmode = fmdev->curr_fmmode;
-	return 0;
-}
-
-/* Called by ST layer when FM packet is available */
-static long fm_st_receive(void *arg, struct sk_buff *skb)
-{
-	struct fmdev *fmdev;
-
-	fmdev = arg;
-
-	if (skb == NULL) {
-		fmerr("Invalid SKB received from ST\n");
-		return -EFAULT;
-	}
-
-	if (skb->cb[0] != FM_PKT_LOGICAL_CHAN_NUMBER) {
-		fmerr("Received SKB (%p) is not FM Channel 8 pkt\n", skb);
-		return -EINVAL;
-	}
-
-	memcpy(skb_push(skb, 1), &skb->cb[0], 1);
-	skb_queue_tail(&fmdev->rx_q, skb);
-	queue_work(system_bh_wq, &fmdev->rx_bh_work);
-
-	return 0;
-}
-
-/*
- * Called by ST layer to indicate protocol registration completion
- * status.
- */
-static void fm_st_reg_comp_cb(void *arg, int data)
-{
-	struct fmdev *fmdev;
-
-	fmdev = (struct fmdev *)arg;
-	fmdev->streg_cbdata = data;
-	complete(&wait_for_fmdrv_reg_comp);
-}
-
-/*
- * This function will be called from FM V4L2 open function.
- * Register with ST driver and initialize driver data.
- */
-int fmc_prepare(struct fmdev *fmdev)
-{
-	static struct st_proto_s fm_st_proto;
-	int ret;
-
-	if (test_bit(FM_CORE_READY, &fmdev->flag)) {
-		fmdbg("FM Core is already up\n");
-		return 0;
-	}
-
-	memset(&fm_st_proto, 0, sizeof(fm_st_proto));
-	fm_st_proto.recv = fm_st_receive;
-	fm_st_proto.match_packet = NULL;
-	fm_st_proto.reg_complete_cb = fm_st_reg_comp_cb;
-	fm_st_proto.write = NULL; /* TI ST driver will fill write pointer */
-	fm_st_proto.priv_data = fmdev;
-	fm_st_proto.chnl_id = 0x08;
-	fm_st_proto.max_frame_size = 0xff;
-	fm_st_proto.hdr_len = 1;
-	fm_st_proto.offset_len_in_hdr = 0;
-	fm_st_proto.len_size = 1;
-	fm_st_proto.reserve = 1;
-
-	ret = st_register(&fm_st_proto);
-	if (ret == -EINPROGRESS) {
-		init_completion(&wait_for_fmdrv_reg_comp);
-		fmdev->streg_cbdata = -EINPROGRESS;
-		fmdbg("%s waiting for ST reg completion signal\n", __func__);
-
-		if (!wait_for_completion_timeout(&wait_for_fmdrv_reg_comp,
-						 FM_ST_REG_TIMEOUT)) {
-			fmerr("Timeout(%d sec), didn't get reg completion signal from ST\n",
-					jiffies_to_msecs(FM_ST_REG_TIMEOUT) / 1000);
-			return -ETIMEDOUT;
-		}
-		if (fmdev->streg_cbdata != 0) {
-			fmerr("ST reg comp CB called with error status %d\n",
-			      fmdev->streg_cbdata);
-			return -EAGAIN;
-		}
-
-		ret = 0;
-	} else if (ret < 0) {
-		fmerr("st_register failed %d\n", ret);
-		return -EAGAIN;
-	}
-
-	if (fm_st_proto.write != NULL) {
-		g_st_write = fm_st_proto.write;
-	} else {
-		fmerr("Failed to get ST write func pointer\n");
-		ret = st_unregister(&fm_st_proto);
-		if (ret < 0)
-			fmerr("st_unregister failed %d\n", ret);
-		return -EAGAIN;
-	}
-
-	spin_lock_init(&fmdev->rds_buff_lock);
-	spin_lock_init(&fmdev->resp_skb_lock);
-
-	/* Initialize TX queue and TX bh work */
-	skb_queue_head_init(&fmdev->tx_q);
-	INIT_WORK(&fmdev->tx_bh_work, send_bh_work);
-
-	/* Initialize RX Queue and RX bh work */
-	skb_queue_head_init(&fmdev->rx_q);
-	INIT_WORK(&fmdev->rx_bh_work, recv_bh_work);
-
-	fmdev->irq_info.stage = 0;
-	atomic_set(&fmdev->tx_cnt, 1);
-	fmdev->resp_comp = NULL;
-
-	timer_setup(&fmdev->irq_info.timer, int_timeout_handler, 0);
-	/*TODO: add FM_STIC_EVENT later */
-	fmdev->irq_info.mask = FM_MAL_EVENT;
-
-	/* Region info */
-	fmdev->rx.region = region_configs[default_radio_region];
-
-	fmdev->rx.mute_mode = FM_MUTE_OFF;
-	fmdev->rx.rf_depend_mute = FM_RX_RF_DEPENDENT_MUTE_OFF;
-	fmdev->rx.rds.flag = FM_RDS_DISABLE;
-	fmdev->rx.freq = FM_UNDEFINED_FREQ;
-	fmdev->rx.rds_mode = FM_RDS_SYSTEM_RDS;
-	fmdev->rx.af_mode = FM_RX_RDS_AF_SWITCH_MODE_OFF;
-	fmdev->irq_info.retry = 0;
-
-	fm_rx_reset_rds_cache(fmdev);
-	init_waitqueue_head(&fmdev->rx.rds.read_queue);
-
-	fm_rx_reset_station_info(fmdev);
-	set_bit(FM_CORE_READY, &fmdev->flag);
-
-	return ret;
-}
-
-/*
- * This function will be called from FM V4L2 release function.
- * Unregister from ST driver.
- */
-int fmc_release(struct fmdev *fmdev)
-{
-	static struct st_proto_s fm_st_proto;
-	int ret;
-
-	if (!test_bit(FM_CORE_READY, &fmdev->flag)) {
-		fmdbg("FM Core is already down\n");
-		return 0;
-	}
-	/* Service pending read */
-	wake_up_interruptible(&fmdev->rx.rds.read_queue);
-
-	cancel_work_sync(&fmdev->tx_bh_work);
-	cancel_work_sync(&fmdev->rx_bh_work);
-
-	skb_queue_purge(&fmdev->tx_q);
-	skb_queue_purge(&fmdev->rx_q);
-
-	fmdev->resp_comp = NULL;
-	fmdev->rx.freq = 0;
-
-	memset(&fm_st_proto, 0, sizeof(fm_st_proto));
-	fm_st_proto.chnl_id = 0x08;
-
-	ret = st_unregister(&fm_st_proto);
-
-	if (ret < 0)
-		fmerr("Failed to de-register FM from ST %d\n", ret);
-	else
-		fmdbg("Successfully unregistered from ST\n");
-
-	clear_bit(FM_CORE_READY, &fmdev->flag);
-	return ret;
-}
-
-/*
- * Module init function. Ask FM V4L module to register video device.
- * Allocate memory for FM driver context and RX RDS buffer.
- */
-static int __init fm_drv_init(void)
-{
-	struct fmdev *fmdev = NULL;
-	int ret = -ENOMEM;
-
-	fmdbg("FM driver version %s\n", FM_DRV_VERSION);
-
-	fmdev = kzalloc(sizeof(struct fmdev), GFP_KERNEL);
-	if (NULL == fmdev) {
-		fmerr("Can't allocate operation structure memory\n");
-		return ret;
-	}
-	fmdev->rx.rds.buf_size = default_rds_buf * FM_RDS_BLK_SIZE;
-	fmdev->rx.rds.buff = kzalloc(fmdev->rx.rds.buf_size, GFP_KERNEL);
-	if (NULL == fmdev->rx.rds.buff) {
-		fmerr("Can't allocate rds ring buffer\n");
-		goto rel_dev;
-	}
-
-	ret = fm_v4l2_init_video_device(fmdev, radio_nr);
-	if (ret < 0)
-		goto rel_rdsbuf;
-
-	fmdev->irq_info.handlers = int_handler_table;
-	fmdev->curr_fmmode = FM_MODE_OFF;
-	fmdev->tx_data.pwr_lvl = FM_PWR_LVL_DEF;
-	fmdev->tx_data.preemph = FM_TX_PREEMPH_50US;
-	return ret;
-
-rel_rdsbuf:
-	kfree(fmdev->rx.rds.buff);
-rel_dev:
-	kfree(fmdev);
-
-	return ret;
-}
-
-/* Module exit function. Ask FM V4L module to unregister video device */
-static void __exit fm_drv_exit(void)
-{
-	struct fmdev *fmdev = NULL;
-
-	fmdev = fm_v4l2_deinit_video_device();
-	if (fmdev != NULL) {
-		kfree(fmdev->rx.rds.buff);
-		kfree(fmdev);
-	}
-}
-
-module_init(fm_drv_init);
-module_exit(fm_drv_exit);
-
-/* ------------- Module Info ------------- */
-MODULE_AUTHOR("Manjunatha Halli <[e-mail]>");
-MODULE_DESCRIPTION("FM Driver for TI's Connectivity chip. " FM_DRV_VERSION);
-MODULE_VERSION(FM_DRV_VERSION);
-MODULE_LICENSE("GPL");

drivers/media/radio/wl128x/fmdrv_common.h

···
-/* SPDX-License-Identifier: GPL-2.0-only */
-/*
- *  FM Driver for Connectivity chip of Texas Instruments.
- *  FM Common module header file
- *
- *  Copyright (C) 2011 Texas Instruments
- */
-
-#ifndef _FMDRV_COMMON_H
-#define _FMDRV_COMMON_H
-
-#define FM_ST_REG_TIMEOUT   msecs_to_jiffies(6000)	/* 6 sec */
-#define FM_PKT_LOGICAL_CHAN_NUMBER  0x08   /* Logical channel 8 */
-
-#define REG_RD       0x1
-#define REG_WR      0x0
-
-struct fm_reg_table {
-	u8 opcode;
-	u8 type;
-	u8 *name;
-};
-
-#define STEREO_GET               0
-#define RSSI_LVL_GET             1
-#define IF_COUNT_GET             2
-#define FLAG_GET                 3
-#define RDS_SYNC_GET             4
-#define RDS_DATA_GET             5
-#define FREQ_SET                 10
-#define AF_FREQ_SET              11
-#define MOST_MODE_SET            12
-#define MOST_BLEND_SET           13
-#define DEMPH_MODE_SET           14
-#define SEARCH_LVL_SET           15
-#define BAND_SET                 16
-#define MUTE_STATUS_SET          17
-#define RDS_PAUSE_LVL_SET        18
-#define RDS_PAUSE_DUR_SET        19
-#define RDS_MEM_SET              20
-#define RDS_BLK_B_SET            21
-#define RDS_MSK_B_SET            22
-#define RDS_PI_MASK_SET          23
-#define RDS_PI_SET               24
-#define RDS_SYSTEM_SET           25
-#define INT_MASK_SET             26
-#define SEARCH_DIR_SET           27
-#define VOLUME_SET               28
-#define AUDIO_ENABLE_SET         29
-#define PCM_MODE_SET             30
-#define I2S_MODE_CONFIG_SET      31
-#define POWER_SET                32
-#define INTX_CONFIG_SET          33
-#define PULL_EN_SET              34
-#define HILO_SET                 35
-#define SWITCH2FREF              36
-#define FREQ_DRIFT_REPORT        37
-
-#define PCE_GET                  40
-#define FIRM_VER_GET             41
-#define ASIC_VER_GET             42
-#define ASIC_ID_GET              43
-#define MAN_ID_GET               44
-#define TUNER_MODE_SET           45
-#define STOP_SEARCH              46
-#define RDS_CNTRL_SET            47
-
-#define WRITE_HARDWARE_REG       100
-#define CODE_DOWNLOAD            101
-#define RESET                    102
-
-#define FM_POWER_MODE            254
-#define FM_INTERRUPT             255
-
-/* Transmitter API */
-
-#define CHANL_SET                55
-#define CHANL_BW_SET		56
-#define REF_SET                  57
-#define POWER_ENB_SET            90
-#define POWER_ATT_SET            58
-#define POWER_LEV_SET            59
-#define AUDIO_DEV_SET            60
-#define PILOT_DEV_SET            61
-#define RDS_DEV_SET              62
-#define TX_BAND_SET              65
-#define PUPD_SET                 91
-#define AUDIO_IO_SET             63
-#define PREMPH_SET               64
-#define MONO_SET                 66
-#define MUTE                     92
-#define MPX_LMT_ENABLE           67
-#define PI_SET                   93
-#define ECC_SET                  69
-#define PTY                      70
-#define AF                       71
-#define DISPLAY_MODE             74
-#define RDS_REP_SET              77
-#define RDS_CONFIG_DATA_SET      98
-#define RDS_DATA_SET             99
-#define RDS_DATA_ENB             94
-#define TA_SET                   78
-#define TP_SET                   79
-#define DI_SET                   80
-#define MS_SET                   81
-#define PS_SCROLL_SPEED          82
-#define TX_AUDIO_LEVEL_TEST      96
-#define TX_AUDIO_LEVEL_TEST_THRESHOLD    73
-#define TX_AUDIO_INPUT_LEVEL_RANGE_SET   54
-#define RX_ANTENNA_SELECT        87
-#define I2C_DEV_ADDR_SET         86
-#define REF_ERR_CALIB_PARAM_SET          88
-#define REF_ERR_CALIB_PERIODICITY_SET    89
-#define SOC_INT_TRIGGER                  52
-#define SOC_AUDIO_PATH_SET               83
-#define SOC_PCMI_OVERRIDE                84
-#define SOC_I2S_OVERRIDE         85
-#define RSSI_BLOCK_SCAN_FREQ_SET 95
-#define RSSI_BLOCK_SCAN_START    97
-#define RSSI_BLOCK_SCAN_DATA_GET  5
-#define READ_FMANT_TUNE_VALUE            104
-
-/* SKB helpers */
-struct fm_skb_cb {
-	__u8 fm_op;
-	struct completion *completion;
-};
-
-#define fm_cb(skb) ((struct fm_skb_cb *)(skb->cb))
-
-/* FM Channel-8 command message format */
-struct fm_cmd_msg_hdr {
-	__u8 hdr;		/* Logical Channel-8 */
-	__u8 len;		/* Number of bytes follows */
-	__u8 op;		/* FM Opcode */
-	__u8 rd_wr;		/* Read/Write command */
-	__u8 dlen;		/* Length of payload */
-} __attribute__ ((packed));
-
-#define FM_CMD_MSG_HDR_SIZE    5	/* sizeof(struct fm_cmd_msg_hdr) */
-
-/* FM Channel-8 event messgage format */
-struct fm_event_msg_hdr {
-	__u8 header;		/* Logical Channel-8 */
-	__u8 len;		/* Number of bytes follows */
-	__u8 status;		/* Event status */
-	__u8 num_fm_hci_cmds;	/* Number of pkts the host allowed to send */
-	__u8 op;		/* FM Opcode */
-	__u8 rd_wr;		/* Read/Write command */
-	__u8 dlen;		/* Length of payload */
-} __attribute__ ((packed));
-
-#define FM_EVT_MSG_HDR_SIZE     7	/* sizeof(struct fm_event_msg_hdr) */
-
-/* TI's magic number in firmware file */
-#define FM_FW_FILE_HEADER_MAGIC	     0x42535442
-
-#define FM_ENABLE   1
-#define FM_DISABLE  0
-
-/* FLAG_GET register bits */
-#define FM_FR_EVENT		BIT(0)
-#define FM_BL_EVENT		BIT(1)
-#define FM_RDS_EVENT		BIT(2)
-#define FM_BBLK_EVENT		BIT(3)
-#define FM_LSYNC_EVENT		BIT(4)
-#define FM_LEV_EVENT		BIT(5)
-#define FM_IFFR_EVENT		BIT(6)
-#define FM_PI_EVENT		BIT(7)
-#define FM_PD_EVENT		BIT(8)
-#define FM_STIC_EVENT		BIT(9)
-#define FM_MAL_EVENT		BIT(10)
-#define FM_POW_ENB_EVENT	BIT(11)
-
-/*
- * Firmware files of FM. ASIC ID and ASIC version will be appened to this,
- * later.
- */
-#define FM_FMC_FW_FILE_START      ("fmc_ch8")
-#define FM_RX_FW_FILE_START       ("fm_rx_ch8")
-#define FM_TX_FW_FILE_START       ("fm_tx_ch8")
-
-#define FM_UNDEFINED_FREQ		   0xFFFFFFFF
-
-/* Band types */
-#define FM_BAND_EUROPE_US	0
-#define FM_BAND_JAPAN		1
-
-/* Seek directions */
-#define FM_SEARCH_DIRECTION_DOWN	0
-#define FM_SEARCH_DIRECTION_UP		1
-
-/* Tunner modes */
-#define FM_TUNER_STOP_SEARCH_MODE	0
-#define FM_TUNER_PRESET_MODE		1
-#define FM_TUNER_AUTONOMOUS_SEARCH_MODE	2
-#define FM_TUNER_AF_JUMP_MODE		3
-
-/* Min and Max volume */
-#define FM_RX_VOLUME_MIN	0
-#define FM_RX_VOLUME_MAX	70
-
-/* Volume gain step */
-#define FM_RX_VOLUME_GAIN_STEP	0x370
-
-/* Mute modes */
-#define	FM_MUTE_ON		0
-#define FM_MUTE_OFF		1
-#define	FM_MUTE_ATTENUATE	2
-
-#define FM_RX_UNMUTE_MODE		0x00
-#define FM_RX_RF_DEP_MODE		0x01
-#define FM_RX_AC_MUTE_MODE		0x02
-#define FM_RX_HARD_MUTE_LEFT_MODE	0x04
-#define FM_RX_HARD_MUTE_RIGHT_MODE	0x08
-#define FM_RX_SOFT_MUTE_FORCE_MODE	0x10
-
-/* RF dependent mute mode */
-#define FM_RX_RF_DEPENDENT_MUTE_ON	1
-#define FM_RX_RF_DEPENDENT_MUTE_OFF	0
-
-/* RSSI threshold min and max */
-#define FM_RX_RSSI_THRESHOLD_MIN	-128
-#define FM_RX_RSSI_THRESHOLD_MAX	127
-
-/* Stereo/Mono mode */
-#define FM_STEREO_MODE		0
-#define FM_MONO_MODE		1
-#define FM_STEREO_SOFT_BLEND	1
-
-/* FM RX De-emphasis filter modes */
-#define FM_RX_EMPHASIS_FILTER_50_USEC	0
-#define FM_RX_EMPHASIS_FILTER_75_USEC	1
-
-/* FM RDS modes */
-#define FM_RDS_DISABLE	0
-#define FM_RDS_ENABLE	1
-
-#define FM_NO_PI_CODE	0
-
-/* FM and RX RDS block enable/disable  */
-#define FM_RX_PWR_SET_FM_ON_RDS_OFF		0x1
-#define FM_RX_PWR_SET_FM_AND_RDS_BLK_ON		0x3
-#define FM_RX_PWR_SET_FM_AND_RDS_BLK_OFF	0x0
-
-/* RX RDS */
-#define FM_RX_RDS_FLUSH_FIFO		0x1
-#define FM_RX_RDS_FIFO_THRESHOLD	64	/* tuples */
-#define FM_RDS_BLK_SIZE		3	/* 3 bytes */
-
-/* RDS block types */
-#define FM_RDS_BLOCK_A		0
-#define FM_RDS_BLOCK_B		1
-#define FM_RDS_BLOCK_C		2
-#define FM_RDS_BLOCK_Ctag	3
-#define FM_RDS_BLOCK_D		4
-#define FM_RDS_BLOCK_E		5
-
-#define FM_RDS_BLK_IDX_A		0
-#define FM_RDS_BLK_IDX_B		1
-#define FM_RDS_BLK_IDX_C		2
-#define FM_RDS_BLK_IDX_D		3
-#define FM_RDS_BLK_IDX_UNKNOWN	0xF0
-
-#define FM_RDS_STATUS_ERR_MASK	0x18
-
-/*
- * Represents an RDS group type & version.
- * There are 15 groups, each group has 2 versions: A and B.
- */
-#define FM_RDS_GROUP_TYPE_MASK_0A	    BIT(0)
-#define FM_RDS_GROUP_TYPE_MASK_0B	    BIT(1)
-#define FM_RDS_GROUP_TYPE_MASK_1A	    BIT(2)
-#define FM_RDS_GROUP_TYPE_MASK_1B	    BIT(3)
-#define FM_RDS_GROUP_TYPE_MASK_2A	    BIT(4)
-#define FM_RDS_GROUP_TYPE_MASK_2B	    BIT(5)
-#define FM_RDS_GROUP_TYPE_MASK_3A	    BIT(6)
-#define FM_RDS_GROUP_TYPE_MASK_3B	    BIT(7)
-#define FM_RDS_GROUP_TYPE_MASK_4A	    BIT(8)
-#define FM_RDS_GROUP_TYPE_MASK_4B	    BIT(9)
-#define FM_RDS_GROUP_TYPE_MASK_5A	    BIT(10)
-#define FM_RDS_GROUP_TYPE_MASK_5B	    BIT(11)
-#define FM_RDS_GROUP_TYPE_MASK_6A	    BIT(12)
-#define FM_RDS_GROUP_TYPE_MASK_6B	    BIT(13)
-#define FM_RDS_GROUP_TYPE_MASK_7A	    BIT(14)
-#define FM_RDS_GROUP_TYPE_MASK_7B	    BIT(15)
-#define FM_RDS_GROUP_TYPE_MASK_8A	    BIT(16)
-#define FM_RDS_GROUP_TYPE_MASK_8B	    BIT(17)
-#define FM_RDS_GROUP_TYPE_MASK_9A	    BIT(18)
-#define FM_RDS_GROUP_TYPE_MASK_9B	    BIT(19)
-#define FM_RDS_GROUP_TYPE_MASK_10A	    BIT(20)
-#define FM_RDS_GROUP_TYPE_MASK_10B	    BIT(21)
-#define FM_RDS_GROUP_TYPE_MASK_11A	    BIT(22)
-#define FM_RDS_GROUP_TYPE_MASK_11B	    BIT(23)
-#define FM_RDS_GROUP_TYPE_MASK_12A	    BIT(24)
-#define FM_RDS_GROUP_TYPE_MASK_12B	    BIT(25)
-#define FM_RDS_GROUP_TYPE_MASK_13A	    BIT(26)
-#define FM_RDS_GROUP_TYPE_MASK_13B	    BIT(27)
-#define FM_RDS_GROUP_TYPE_MASK_14A	    BIT(28)
-#define FM_RDS_GROUP_TYPE_MASK_14B	    BIT(29)
-#define FM_RDS_GROUP_TYPE_MASK_15A	    BIT(30)
-#define FM_RDS_GROUP_TYPE_MASK_15B	    BIT(31)
-
-/* RX Alternate Frequency info */
-#define FM_RDS_MIN_AF			  1
-#define FM_RDS_MAX_AF			204
-#define FM_RDS_MAX_AF_JAPAN		140
-#define FM_RDS_1_AF_FOLLOWS		225
-#define FM_RDS_25_AF_FOLLOWS		249
-
-/* RDS system type (RDS/RBDS) */
-#define FM_RDS_SYSTEM_RDS		0
-#define FM_RDS_SYSTEM_RBDS		1
-
-/* AF on/off */
-#define FM_RX_RDS_AF_SWITCH_MODE_ON	1
-#define FM_RX_RDS_AF_SWITCH_MODE_OFF	0
-
-/* Retry count when interrupt process goes wrong */
-#define FM_IRQ_TIMEOUT_RETRY_MAX	5	/* 5 times */
-
-/* Audio IO set values */
-#define FM_RX_AUDIO_ENABLE_I2S	0x01
-#define FM_RX_AUDIO_ENABLE_ANALOG	0x02
-#define FM_RX_AUDIO_ENABLE_I2S_AND_ANALOG	0x03
-#define FM_RX_AUDIO_ENABLE_DISABLE	0x00
-
-/* HI/LO set values */
-#define FM_RX_IFFREQ_TO_HI_SIDE		0x0
-#define FM_RX_IFFREQ_TO_LO_SIDE		0x1
-#define FM_RX_IFFREQ_HILO_AUTOMATIC	0x2
-
-/*
- * Default RX mode configuration. Chip will be configured
- * with this default values after loading RX firmware.
- */
-#define FM_DEFAULT_RX_VOLUME		10
-#define FM_DEFAULT_RSSI_THRESHOLD	3
-
-/* Range for TX power level in units for dB/uV */
-#define FM_PWR_LVL_LOW			91
-#define FM_PWR_LVL_HIGH			122
-
-/* Chip specific default TX power level value */
-#define FM_PWR_LVL_DEF			4
-
-/* FM TX Pre-emphasis filter values */
-#define FM_TX_PREEMPH_OFF		1
-#define FM_TX_PREEMPH_50US		0
-#define FM_TX_PREEMPH_75US		2
-
-/* FM TX antenna impedance values */
-#define FM_TX_ANT_IMP_50		0
-#define FM_TX_ANT_IMP_200		1
-#define FM_TX_ANT_IMP_500		2
-
-/* Functions exported by FM common sub-module */
-int fmc_prepare(struct fmdev *);
-int fmc_release(struct fmdev *);
-
-void fmc_update_region_info(struct fmdev *, u8);
-int fmc_send_cmd(struct fmdev *, u8, u16,
-				void *, unsigned int, void *, int *);
-int fmc_is_rds_data_available(struct fmdev *, struct file *,
-				struct poll_table_struct *);
-int fmc_transfer_rds_from_internal_buff(struct fmdev *, struct file *,
-					u8 __user *, size_t);
-
-int fmc_set_freq(struct fmdev *, u32);
-int fmc_set_mode(struct fmdev *, u8);
-int fmc_set_region(struct fmdev *, u8);
-int fmc_set_mute_mode(struct fmdev *, u8);
-int fmc_set_stereo_mono(struct fmdev *, u16);
-int fmc_set_rds_mode(struct fmdev *, u8);
-
-int fmc_get_freq(struct fmdev *, u32 *);
-int fmc_get_region(struct fmdev *, u8 *);
-int fmc_get_mode(struct fmdev *, u8 *);
-
-/*
- * channel spacing
- */
-#define FM_CHANNEL_SPACING_50KHZ 1
-#define FM_CHANNEL_SPACING_100KHZ 2
-#define FM_CHANNEL_SPACING_200KHZ 4
-#define FM_FREQ_MUL 50
-
-#endif
-

drivers/media/radio/wl128x/fmdrv_rx.c

···
-// SPDX-License-Identifier: GPL-2.0-only
-/*
- *  FM Driver for Connectivity chip of Texas Instruments.
- *  This sub-module of FM driver implements FM RX functionality.
- *
- *  Copyright (C) 2011 Texas Instruments
- *  Author: Raja Mani <[e-mail]>
- *  Author: Manjunatha Halli <[e-mail]>
- */
-
-#include "fmdrv.h"
-#include "fmdrv_common.h"
-#include "fmdrv_rx.h"
-
-void fm_rx_reset_rds_cache(struct fmdev *fmdev)
-{
-	fmdev->rx.rds.flag = FM_RDS_DISABLE;
-	fmdev->rx.rds.last_blk_idx = 0;
-	fmdev->rx.rds.wr_idx = 0;
-	fmdev->rx.rds.rd_idx = 0;
-
-	if (fmdev->rx.af_mode == FM_RX_RDS_AF_SWITCH_MODE_ON)
-		fmdev->irq_info.mask |= FM_LEV_EVENT;
-}
-
-void fm_rx_reset_station_info(struct fmdev *fmdev)
-{
-	fmdev->rx.stat_info.picode = FM_NO_PI_CODE;
-	fmdev->rx.stat_info.afcache_size = 0;
-	fmdev->rx.stat_info.af_list_max = 0;
-}
-
-int fm_rx_set_freq(struct fmdev *fmdev, u32 freq)
-{
-	unsigned long timeleft;
-	u16 payload, curr_frq, intr_flag;
-	u32 curr_frq_in_khz;
-	u32 resp_len;
-	int ret;
-
-	if (freq < fmdev->rx.region.bot_freq || freq > fmdev->rx.region.top_freq) {
-		fmerr("Invalid frequency %d\n", freq);
-		return -EINVAL;
-	}
-
-	/* Set audio enable */
-	payload = FM_RX_AUDIO_ENABLE_I2S_AND_ANALOG;
-
-	ret = fmc_send_cmd(fmdev, AUDIO_ENABLE_SET, REG_WR, &payload,
-			sizeof(payload), NULL, NULL);
-	if (ret < 0)
-		return ret;
-
-	/* Set hilo to automatic selection */
-	payload = FM_RX_IFFREQ_HILO_AUTOMATIC;
-	ret = fmc_send_cmd(fmdev, HILO_SET, REG_WR, &payload,
-			sizeof(payload), NULL, NULL);
-	if (ret < 0)
-		return ret;
-
-	/* Calculate frequency index and set*/
-	payload = (freq - fmdev->rx.region.bot_freq) / FM_FREQ_MUL;
-
-	ret = fmc_send_cmd(fmdev, FREQ_SET, REG_WR, &payload,
-			sizeof(payload), NULL, NULL);
-	if (ret < 0)
-		return ret;
-
-	/* Read flags - just to clear any pending interrupts if we had */
-	ret = fmc_send_cmd(fmdev, FLAG_GET, REG_RD, NULL, 2, NULL, NULL);
-	if (ret < 0)
-		return ret;
-
-	/* Enable FR, BL interrupts */
-	intr_flag = fmdev->irq_info.mask;
-	fmdev->irq_info.mask = (FM_FR_EVENT | FM_BL_EVENT);
-	payload = fmdev->irq_info.mask;
-	ret = fmc_send_cmd(fmdev, INT_MASK_SET, REG_WR, &payload,
-			sizeof(payload), NULL, NULL);
-	if (ret < 0)
-		return ret;
-
-	/* Start tune */
-	payload = FM_TUNER_PRESET_MODE;
-	ret = fmc_send_cmd(fmdev, TUNER_MODE_SET, REG_WR, &payload,
-			sizeof(payload), NULL, NULL);
-	if (ret < 0)
-		goto exit;
-
-	/* Wait for tune ended interrupt */
-	init_completion(&fmdev->maintask_comp);
-	timeleft = wait_for_completion_timeout(&fmdev->maintask_comp,
-			FM_DRV_TX_TIMEOUT);
-	if (!timeleft) {
-		fmerr("Timeout(%d sec),didn't get tune ended int\n",
-			   jiffies_to_msecs(FM_DRV_TX_TIMEOUT) / 1000);
-		ret = -ETIMEDOUT;
-		goto exit;
-	}
-
-	/* Read freq back to confirm */
-	ret = fmc_send_cmd(fmdev, FREQ_SET, REG_RD, NULL, 2, &curr_frq, &resp_len);
-	if (ret < 0)
-		goto exit;
-
-	curr_frq = be16_to_cpu((__force __be16)curr_frq);
-	curr_frq_in_khz = (fmdev->rx.region.bot_freq + ((u32)curr_frq * FM_FREQ_MUL));
-
-	if (curr_frq_in_khz != freq) {
-		pr_info("Frequency is set to (%d) but requested freq is (%d)\n",
-			curr_frq_in_khz, freq);
-	}
-
-	/* Update local cache  */
-	fmdev->rx.freq = curr_frq_in_khz;
-exit:
-	/* Re-enable default FM interrupts */
-	fmdev->irq_info.mask = intr_flag;
-	payload = fmdev->irq_info.mask;
-	ret = fmc_send_cmd(fmdev, INT_MASK_SET, REG_WR, &payload,
-			sizeof(payload), NULL, NULL);
-	if (ret < 0)
-		return ret;
-
-	/* Reset RDS cache and current station pointers */
-	fm_rx_reset_rds_cache(fmdev);
-	fm_rx_reset_station_info(fmdev);
-
-	return ret;
-}
-
-static int fm_rx_set_channel_spacing(struct fmdev *fmdev, u32 spacing)
-{
-	u16 payload;
-	int ret;
-
-	if (spacing > 0 && spacing <= 50000)
-		spacing = FM_CHANNEL_SPACING_50KHZ;
-	else if (spacing > 50000 && spacing <= 100000)
-		spacing = FM_CHANNEL_SPACING_100KHZ;
-	else
-		spacing = FM_CHANNEL_SPACING_200KHZ;
-
-	/* set channel spacing */
-	payload = spacing;
-	ret = fmc_send_cmd(fmdev, CHANL_BW_SET, REG_WR, &payload,
-			sizeof(payload), NULL, NULL);
-	if (ret < 0)
-		return ret;
-
-	fmdev->rx.region.chanl_space = spacing * FM_FREQ_MUL;
-
-	return ret;
-}
-
-int fm_rx_seek(struct fmdev *fmdev, u32 seek_upward,
-		u32 wrap_around, u32 spacing)
-{
-	u32 resp_len;
-	u16 curr_frq, next_frq, last_frq;
-	u16 payload, int_reason, intr_flag;
-	u16 offset, space_idx;
-	unsigned long timeleft;
-	int ret;
-
-	/* Set channel spacing */
-	ret = fm_rx_set_channel_spacing(fmdev, spacing);
-	if (ret < 0) {
-		fmerr("Failed to set channel spacing\n");
-		return ret;
-	}
-
-	/* Read the current frequency from chip */
-	ret = fmc_send_cmd(fmdev, FREQ_SET, REG_RD, NULL,
-			sizeof(curr_frq), &curr_frq, &resp_len);
-	if (ret < 0)
-		return ret;
-
-	curr_frq = be16_to_cpu((__force __be16)curr_frq);
-	last_frq = (fmdev->rx.region.top_freq - fmdev->rx.region.bot_freq) / FM_FREQ_MUL;
-
-	/* Check the offset in order to be aligned to the channel spacing*/
-	space_idx = fmdev->rx.region.chanl_space / FM_FREQ_MUL;
-	offset = curr_frq % space_idx;
-
-	next_frq = seek_upward ? curr_frq + space_idx /* Seek Up */ :
-				curr_frq - space_idx /* Seek Down */ ;
-
-	/*
-	 * Add or subtract offset in order to stay aligned to the channel
-	 * spacing.
-	 */
-	if ((short)next_frq < 0)
-		next_frq = last_frq - offset;
-	else if (next_frq > last_frq)
-		next_frq = 0 + offset;
-
-again:
-	/* Set calculated next frequency to perform seek */
-	payload = next_frq;
-	ret = fmc_send_cmd(fmdev, FREQ_SET, REG_WR, &payload,
-			sizeof(payload), NULL, NULL);
-	if (ret < 0)
-		return ret;
-
-	/* Set search direction (0:Seek Down, 1:Seek Up) */
-	payload = (seek_upward ? FM_SEARCH_DIRECTION_UP : FM_SEARCH_DIRECTION_DOWN);
-	ret = fmc_send_cmd(fmdev, SEARCH_DIR_SET, REG_WR, &payload,
-			sizeof(payload), NULL, NULL);
-	if (ret < 0)
-		return ret;
-
-	/* Read flags - just to clear any pending interrupts if we had */
-	ret = fmc_send_cmd(fmdev, FLAG_GET, REG_RD, NULL, 2, NULL, NULL);
-	if (ret < 0)
-		return ret;
-
-	/* Enable FR, BL interrupts */
-	intr_flag = fmdev->irq_info.mask;
-	fmdev->irq_info.mask = (FM_FR_EVENT | FM_BL_EVENT);
-	payload = fmdev->irq_info.mask;
-	ret = fmc_send_cmd(fmdev, INT_MASK_SET, REG_WR, &payload,
-			sizeof(payload), NULL, NULL);
-	if (ret < 0)
-		return ret;
-
-	/* Start seek */
-	payload = FM_TUNER_AUTONOMOUS_SEARCH_MODE;
-	ret = fmc_send_cmd(fmdev, TUNER_MODE_SET, REG_WR, &payload,
-			sizeof(payload), NULL, NULL);
-	if (ret < 0)
-		return ret;
-
-	/* Wait for tune ended/band limit reached interrupt */
-	init_completion(&fmdev->maintask_comp);
-	timeleft = wait_for_completion_timeout(&fmdev->maintask_comp,
-			FM_DRV_RX_SEEK_TIMEOUT);
-	if (!timeleft) {
-		fmerr("Timeout(%d sec),didn't get tune ended int\n",
-			   jiffies_to_msecs(FM_DRV_RX_SEEK_TIMEOUT) / 1000);
-		return -ENODATA;
-	}
-
-	int_reason = fmdev->irq_info.flag & (FM_TUNE_COMPLETE | FM_BAND_LIMIT);
-
-	/* Re-enable default FM interrupts */
-	fmdev->irq_info.mask = intr_flag;
-	payload = fmdev->irq_info.mask;
-	ret = fmc_send_cmd(fmdev, INT_MASK_SET, REG_WR, &payload,
-			sizeof(payload), NULL, NULL);
-	if (ret < 0)
-		return ret;
-
-	if (int_reason & FM_BL_EVENT) {
-		if (wrap_around == 0) {
-			fmdev->rx.freq = seek_upward ?
-				fmdev->rx.region.top_freq :
-				fmdev->rx.region.bot_freq;
-		} else {
-			fmdev->rx.freq = seek_upward ?
-				fmdev->rx.region.bot_freq :
-				fmdev->rx.region.top_freq;
-			/* Calculate frequency index to write */
-			next_frq = (fmdev->rx.freq -
-					fmdev->rx.region.bot_freq) / FM_FREQ_MUL;
-			goto again;
-		}
-	} else {
-		/* Read freq to know where operation tune operation stopped */
-		ret = fmc_send_cmd(fmdev, FREQ_SET, REG_RD, NULL, 2,
-				&curr_frq, &resp_len);
-		if (ret < 0)
-			return ret;
-
-		curr_frq = be16_to_cpu((__force __be16)curr_frq);
-		fmdev->rx.freq = (fmdev->rx.region.bot_freq +
-				((u32)curr_frq * FM_FREQ_MUL));
-
-	}
-	/* Reset RDS cache and current station pointers */
-	fm_rx_reset_rds_cache(fmdev);
-	fm_rx_reset_station_info(fmdev);
-
-	return ret;
-}
-
-int fm_rx_set_volume(struct fmdev *fmdev, u16 vol_to_set)
-{
-	u16 payload;
-	int ret;
-
-	if (fmdev->curr_fmmode != FM_MODE_RX)
-		return -EPERM;
-
-	if (vol_to_set > FM_RX_VOLUME_MAX) {
-		fmerr("Volume is not within(%d-%d) range\n",
-			   FM_RX_VOLUME_MIN, FM_RX_VOLUME_MAX);
-		return -EINVAL;
-	}
-	vol_to_set *= FM_RX_VOLUME_GAIN_STEP;
-
-	payload = vol_to_set;
-	ret = fmc_send_cmd(fmdev, VOLUME_SET, REG_WR, &payload,
-			sizeof(payload), NULL, NULL);
-	if (ret < 0)
-		return ret;
-
-	fmdev->rx.volume = vol_to_set;
-	return ret;
-}
-
-/* Get volume */
-int fm_rx_get_volume(struct fmdev *fmdev, u16 *curr_vol)
-{
-	if (fmdev->curr_fmmode != FM_MODE_RX)
-		return -EPERM;
-
-	if (curr_vol == NULL) {
-		fmerr("Invalid memory\n");
-		return -ENOMEM;
-	}
-
-	*curr_vol = fmdev->rx.volume / FM_RX_VOLUME_GAIN_STEP;
-
-	return 0;
-}
-
-/* To get current band's bottom and top frequency */
-int fm_rx_get_band_freq_range(struct fmdev *fmdev, u32 *bot_freq, u32 *top_freq)
-{
-	if (bot_freq != NULL)
-		*bot_freq = fmdev->rx.region.bot_freq;
-
-	if (top_freq != NULL)
-		*top_freq = fmdev->rx.region.top_freq;
-
-	return 0;
-}
-
-/* Returns current band index (0-Europe/US; 1-Japan) */
-void fm_rx_get_region(struct fmdev *fmdev, u8 *region)
-{
-	*region = fmdev->rx.region.fm_band;
-}
-
-/* Sets band (0-Europe/US; 1-Japan) */
-int fm_rx_set_region(struct fmdev *fmdev, u8 region_to_set)
-{
-	u16 payload;
-	u32 new_frq = 0;
-	int ret;
-
-	if (region_to_set != FM_BAND_EUROPE_US &&
-	    region_to_set != FM_BAND_JAPAN) {
-		fmerr("Invalid band\n");
-		return -EINVAL;
-	}
-
-	if (fmdev->rx.region.fm_band == region_to_set) {
-		fmerr("Requested band is already configured\n");
-		return 0;
-	}
-
-	/* Send cmd to set the band  */
-	payload = (u16)region_to_set;
-	ret = fmc_send_cmd(fmdev, BAND_SET, REG_WR, &payload,
-			sizeof(payload), NULL, NULL);
-	if (ret < 0)
-		return ret;
-
-	fmc_update_region_info(fmdev, region_to_set);
-
-	/* Check whether current RX frequency is within band boundary */
-	if (fmdev->rx.freq < fmdev->rx.region.bot_freq)
-		new_frq = fmdev->rx.region.bot_freq;
-	else if (fmdev->rx.freq > fmdev->rx.region.top_freq)
-		new_frq = fmdev->rx.region.top_freq;
-
-	if (new_frq) {
-		fmdbg("Current freq is not within band limit boundary,switching to %d KHz\n",
-		      new_frq);
-		 /* Current RX frequency is not in range. So, update it */
-		ret = fm_rx_set_freq(fmdev, new_frq);
-	}
-
-	return ret;
-}
-
-/* Reads current mute mode (Mute Off/On/Attenuate)*/
-int fm_rx_get_mute_mode(struct fmdev *fmdev, u8 *curr_mute_mode)
-{
-	if (fmdev->curr_fmmode != FM_MODE_RX)
-		return -EPERM;
-
-	if (curr_mute_mode == NULL) {
-		fmerr("Invalid memory\n");
-		return -ENOMEM;
-	}
-
-	*curr_mute_mode = fmdev->rx.mute_mode;
-
-	return 0;
-}
-
-static int fm_config_rx_mute_reg(struct fmdev *fmdev)
-{
-	u16 payload, muteval;
-	int ret;
-
-	muteval = 0;
-	switch (fmdev->rx.mute_mode) {
-	case FM_MUTE_ON:
-		muteval = FM_RX_AC_MUTE_MODE;
-		break;
-
-	case FM_MUTE_OFF:
-		muteval = FM_RX_UNMUTE_MODE;
-		break;
-
-	case FM_MUTE_ATTENUATE:
-		muteval = FM_RX_SOFT_MUTE_FORCE_MODE;
-		break;
-	}
-	if (fmdev->rx.rf_depend_mute == FM_RX_RF_DEPENDENT_MUTE_ON)
-		muteval |= FM_RX_RF_DEP_MODE;
-	else
-		muteval &= ~FM_RX_RF_DEP_MODE;
-
-	payload = muteval;
-	ret = fmc_send_cmd(fmdev, MUTE_STATUS_SET, REG_WR, &payload,
-			sizeof(payload), NULL, NULL);
-	if (ret < 0)
-		return ret;
-
-	return 0;
-}
-
-/* Configures mute mode (Mute Off/On/Attenuate) */
-int fm_rx_set_mute_mode(struct fmdev *fmdev, u8 mute_mode_toset)
-{
-	u8 org_state;
-	int ret;
-
-	if (fmdev->rx.mute_mode == mute_mode_toset)
-		return 0;
-
-	org_state = fmdev->rx.mute_mode;
-	fmdev->rx.mute_mode = mute_mode_toset;
-
-	ret = fm_config_rx_mute_reg(fmdev);
-	if (ret < 0) {
-		fmdev->rx.mute_mode = org_state;
-		return ret;
-	}
-
-	return 0;
-}
-
-/* Gets RF dependent soft mute mode enable/disable status */
-int fm_rx_get_rfdepend_softmute(struct fmdev *fmdev, u8 *curr_mute_mode)
-{
-	if (fmdev->curr_fmmode != FM_MODE_RX)
-		return -EPERM;
-
-	if (curr_mute_mode == NULL) {
-		fmerr("Invalid memory\n");
-		return -ENOMEM;
-	}
-
-	*curr_mute_mode = fmdev->rx.rf_depend_mute;
-
-	return 0;
-}
-
-/* Sets RF dependent soft mute mode */
-int fm_rx_set_rfdepend_softmute(struct fmdev *fmdev, u8 rfdepend_mute)
-{
-	u8 org_state;
-	int ret;
-
-	if (fmdev->curr_fmmode != FM_MODE_RX)
-		return -EPERM;
-
-	if (rfdepend_mute != FM_RX_RF_DEPENDENT_MUTE_ON &&
-	    rfdepend_mute != FM_RX_RF_DEPENDENT_MUTE_OFF) {
-		fmerr("Invalid RF dependent soft mute\n");
-		return -EINVAL;
-	}
-	if (fmdev->rx.rf_depend_mute == rfdepend_mute)
-		return 0;
-
-	org_state = fmdev->rx.rf_depend_mute;
-	fmdev->rx.rf_depend_mute = rfdepend_mute;
-
-	ret = fm_config_rx_mute_reg(fmdev);
-	if (ret < 0) {
-		fmdev->rx.rf_depend_mute = org_state;
-		return ret;
-	}
-
-	return 0;
-}
-
-/* Returns the signal strength level of current channel */
-int fm_rx_get_rssi_level(struct fmdev *fmdev, u16 *rssilvl)
-{
-	__be16 curr_rssi_lel;
-	u32 resp_len;
-	int ret;
-
-	if (rssilvl == NULL) {
-		fmerr("Invalid memory\n");
-		return -ENOMEM;
-	}
-	/* Read current RSSI level */
-	ret = fmc_send_cmd(fmdev, RSSI_LVL_GET, REG_RD, NULL, 2,
-			&curr_rssi_lel, &resp_len);
-	if (ret < 0)
-		return ret;
-
-	*rssilvl = be16_to_cpu(curr_rssi_lel);
-
-	return 0;
-}
-
-/*
- * Sets the signal strength level that once reached
- * will stop the auto search process
- */
-int fm_rx_set_rssi_threshold(struct fmdev *fmdev, short rssi_lvl_toset)
-{
-	u16 payload;
-	int ret;
-
-	if (rssi_lvl_toset < FM_RX_RSSI_THRESHOLD_MIN ||
-			rssi_lvl_toset > FM_RX_RSSI_THRESHOLD_MAX) {
-		fmerr("Invalid RSSI threshold level\n");
-		return -EINVAL;
-	}
-	payload = (u16)rssi_lvl_toset;
-	ret = fmc_send_cmd(fmdev, SEARCH_LVL_SET, REG_WR, &payload,
-			sizeof(payload), NULL, NULL);
-	if (ret < 0)
-		return ret;
-
-	fmdev->rx.rssi_threshold = rssi_lvl_toset;
-
-	return 0;
-}
-
-/* Returns current RX RSSI threshold value */
-int fm_rx_get_rssi_threshold(struct fmdev *fmdev, short *curr_rssi_lvl)
-{
-	if (fmdev->curr_fmmode != FM_MODE_RX)
-		return -EPERM;
-
-	if (curr_rssi_lvl == NULL) {
-		fmerr("Invalid memory\n");
-		return -ENOMEM;
-	}
-
-	*curr_rssi_lvl = fmdev->rx.rssi_threshold;
-
-	return 0;
-}
-
-/* Sets RX stereo/mono modes */
-int fm_rx_set_stereo_mono(struct fmdev *fmdev, u16 mode)
-{
-	u16 payload;
-	int ret;
-
-	if (mode != FM_STEREO_MODE && mode != FM_MONO_MODE) {
-		fmerr("Invalid mode\n");
-		return -EINVAL;
-	}
-
-	/* Set stereo/mono mode */
-	payload = (u16)mode;
-	ret = fmc_send_cmd(fmdev, MOST_MODE_SET, REG_WR, &payload,
-			sizeof(payload), NULL, NULL);
-	if (ret < 0)
-		return ret;
-
-	/* Set stereo blending mode */
-	payload = FM_STEREO_SOFT_BLEND;
-	ret = fmc_send_cmd(fmdev, MOST_BLEND_SET, REG_WR, &payload,
-			sizeof(payload), NULL, NULL);
-	if (ret < 0)
-		return ret;
-
-	return 0;
-}
-
-/* Gets current RX stereo/mono mode */
-int fm_rx_get_stereo_mono(struct fmdev *fmdev, u16 *mode)
-{
-	__be16 curr_mode;
-	u32 resp_len;
-	int ret;
-
-	if (mode == NULL) {
-		fmerr("Invalid memory\n");
-		return -ENOMEM;
-	}
-
-	ret = fmc_send_cmd(fmdev, MOST_MODE_SET, REG_RD, NULL, 2,
-			&curr_mode, &resp_len);
-	if (ret < 0)
-		return ret;
-
-	*mode = be16_to_cpu(curr_mode);
-
-	return 0;
-}
-
-/* Choose RX de-emphasis filter mode (50us/75us) */
-int fm_rx_set_deemphasis_mode(struct fmdev *fmdev, u16 mode)
-{
-	u16 payload;
-	int ret;
-
-	if (fmdev->curr_fmmode != FM_MODE_RX)
-		return -EPERM;
-
-	if (mode != FM_RX_EMPHASIS_FILTER_50_USEC &&
-			mode != FM_RX_EMPHASIS_FILTER_75_USEC) {
-		fmerr("Invalid rx de-emphasis mode (%d)\n", mode);
-		return -EINVAL;
-	}
-
-	payload = mode;
-	ret = fmc_send_cmd(fmdev, DEMPH_MODE_SET, REG_WR, &payload,
-			sizeof(payload), NULL, NULL);
-	if (ret < 0)
-		return ret;
-
-	fmdev->rx.deemphasis_mode = mode;
-
-	return 0;
-}
-
-/* Gets current RX de-emphasis filter mode */
-int fm_rx_get_deemph_mode(struct fmdev *fmdev, u16 *curr_deemphasis_mode)
-{
-	if (fmdev->curr_fmmode != FM_MODE_RX)
-		return -EPERM;
-
-	if (curr_deemphasis_mode == NULL) {
-		fmerr("Invalid memory\n");
-		return -ENOMEM;
-	}
-
-	*curr_deemphasis_mode = fmdev->rx.deemphasis_mode;
-
-	return 0;
-}
-
-/* Enable/Disable RX RDS */
-int fm_rx_set_rds_mode(struct fmdev *fmdev, u8 rds_en_dis)
-{
-	u16 payload;
-	int ret;
-
-	if (rds_en_dis != FM_RDS_ENABLE && rds_en_dis != FM_RDS_DISABLE) {
-		fmerr("Invalid rds option\n");
-		return -EINVAL;
-	}
-
-	if (rds_en_dis == FM_RDS_ENABLE
-	    && fmdev->rx.rds.flag == FM_RDS_DISABLE) {
-		/* Turn on RX RDS and RDS circuit */
-		payload = FM_RX_PWR_SET_FM_AND_RDS_BLK_ON;
-		ret = fmc_send_cmd(fmdev, POWER_SET, REG_WR, &payload,
-				sizeof(payload), NULL, NULL);
-		if (ret < 0)
-			return ret;
-
-		/* Clear and reset RDS FIFO */
-		payload = FM_RX_RDS_FLUSH_FIFO;
-		ret = fmc_send_cmd(fmdev, RDS_CNTRL_SET, REG_WR, &payload,
-		sizeof(payload), NULL, NULL);
-		if (ret < 0)
-			return ret;
-
-		/* Read flags - just to clear any pending interrupts. */
-		ret = fmc_send_cmd(fmdev, FLAG_GET, REG_RD, NULL, 2,
-				NULL, NULL);
-		if (ret < 0)
-			return ret;
-
-		/* Set RDS FIFO threshold value */
-		payload = FM_RX_RDS_FIFO_THRESHOLD;
-		ret = fmc_send_cmd(fmdev, RDS_MEM_SET, REG_WR, &payload,
-		sizeof(payload), NULL, NULL);
-		if (ret < 0)
-			return ret;
-
-		/* Enable RDS interrupt */
-		fmdev->irq_info.mask |= FM_RDS_EVENT;
-		payload = fmdev->irq_info.mask;
-		ret = fmc_send_cmd(fmdev, INT_MASK_SET, REG_WR, &payload,
-				sizeof(payload), NULL, NULL);
-		if (ret < 0) {
-			fmdev->irq_info.mask &= ~FM_RDS_EVENT;
-			return ret;
-		}
-
-		/* Update our local flag */
-		fmdev->rx.rds.flag = FM_RDS_ENABLE;
-	} else if (rds_en_dis == FM_RDS_DISABLE
-		   && fmdev->rx.rds.flag == FM_RDS_ENABLE) {
-		/* Turn off RX RDS */
-		payload = FM_RX_PWR_SET_FM_ON_RDS_OFF;
-		ret = fmc_send_cmd(fmdev, POWER_SET, REG_WR, &payload,
-				sizeof(payload), NULL, NULL);
-		if (ret < 0)
-			return ret;
-
-		/* Reset RDS pointers */
-		fmdev->rx.rds.last_blk_idx = 0;
-		fmdev->rx.rds.wr_idx = 0;
-		fmdev->rx.rds.rd_idx = 0;
-		fm_rx_reset_station_info(fmdev);
-
-		/* Update RDS local cache */
-		fmdev->irq_info.mask &= ~(FM_RDS_EVENT);
-		fmdev->rx.rds.flag = FM_RDS_DISABLE;
-	}
-
-	return 0;
-}
-
-/* Returns current RX RDS enable/disable status */
-int fm_rx_get_rds_mode(struct fmdev *fmdev, u8 *curr_rds_en_dis)
-{
-	if (fmdev->curr_fmmode != FM_MODE_RX)
-		return -EPERM;
-
-	if (curr_rds_en_dis == NULL) {
-		fmerr("Invalid memory\n");
-		return -ENOMEM;
-	}
-
-	*curr_rds_en_dis = fmdev->rx.rds.flag;
-
-	return 0;
-}
-
-/* Sets RDS operation mode (RDS/RDBS) */
-int fm_rx_set_rds_system(struct fmdev *fmdev, u8 rds_mode)
-{
-	u16 payload;
-	int ret;
-
-	if (fmdev->curr_fmmode != FM_MODE_RX)
-		return -EPERM;
-
-	if (rds_mode != FM_RDS_SYSTEM_RDS && rds_mode != FM_RDS_SYSTEM_RBDS) {
-		fmerr("Invalid rds mode\n");
-		return -EINVAL;
-	}
-	/* Set RDS operation mode */
-	payload = (u16)rds_mode;
-	ret = fmc_send_cmd(fmdev, RDS_SYSTEM_SET, REG_WR, &payload,
-			sizeof(payload), NULL, NULL);
-	if (ret < 0)
-		return ret;
-
-	fmdev->rx.rds_mode = rds_mode;
-
-	return 0;
-}
-
-/* Configures Alternate Frequency switch mode */
-int fm_rx_set_af_switch(struct fmdev *fmdev, u8 af_mode)
-{
-	u16 payload;
-	int ret;
-
-	if (fmdev->curr_fmmode != FM_MODE_RX)
-		return -EPERM;
-
-	if (af_mode != FM_RX_RDS_AF_SWITCH_MODE_ON &&
-	    af_mode != FM_RX_RDS_AF_SWITCH_MODE_OFF) {
-		fmerr("Invalid af mode\n");
-		return -EINVAL;
-	}
-	/* Enable/disable low RSSI interrupt based on af_mode */
-	if (af_mode == FM_RX_RDS_AF_SWITCH_MODE_ON)
-		fmdev->irq_info.mask |= FM_LEV_EVENT;
-	else
-		fmdev->irq_info.mask &= ~FM_LEV_EVENT;
-
-	payload = fmdev->irq_info.mask;
-	ret = fmc_send_cmd(fmdev, INT_MASK_SET, REG_WR, &payload,
-			sizeof(payload), NULL, NULL);
-	if (ret < 0)
-		return ret;
-
-	fmdev->rx.af_mode = af_mode;
-
-	return 0;
-}
-
-/* Returns Alternate Frequency switch status */
-int fm_rx_get_af_switch(struct fmdev *fmdev, u8 *af_mode)
-{
-	if (fmdev->curr_fmmode != FM_MODE_RX)
-		return -EPERM;
-
-	if (af_mode == NULL) {
-		fmerr("Invalid memory\n");
-		return -ENOMEM;
-	}
-
-	*af_mode = fmdev->rx.af_mode;
-
-	return 0;
-}

drivers/media/radio/wl128x/fmdrv_rx.h

···
-/* SPDX-License-Identifier: GPL-2.0-only */
-/*
- *  FM Driver for Connectivity chip of Texas Instruments.
- *  FM RX module header.
- *
- *  Copyright (C) 2011 Texas Instruments
- */
-
-#ifndef _FMDRV_RX_H
-#define _FMDRV_RX_H
-
-int fm_rx_set_freq(struct fmdev *, u32);
-int fm_rx_set_mute_mode(struct fmdev *, u8);
-int fm_rx_set_stereo_mono(struct fmdev *, u16);
-int fm_rx_set_rds_mode(struct fmdev *, u8);
-int fm_rx_set_rds_system(struct fmdev *, u8);
-int fm_rx_set_volume(struct fmdev *, u16);
-int fm_rx_set_rssi_threshold(struct fmdev *, short);
-int fm_rx_set_region(struct fmdev *, u8);
-int fm_rx_set_rfdepend_softmute(struct fmdev *, u8);
-int fm_rx_set_deemphasis_mode(struct fmdev *, u16);
-int fm_rx_set_af_switch(struct fmdev *, u8);
-
-void fm_rx_reset_rds_cache(struct fmdev *);
-void fm_rx_reset_station_info(struct fmdev *);
-
-int fm_rx_seek(struct fmdev *, u32, u32, u32);
-
-int fm_rx_get_rds_mode(struct fmdev *, u8 *);
-int fm_rx_get_mute_mode(struct fmdev *, u8 *);
-int fm_rx_get_volume(struct fmdev *, u16 *);
-int fm_rx_get_band_freq_range(struct fmdev *,
-					u32 *, u32 *);
-int fm_rx_get_stereo_mono(struct fmdev *, u16 *);
-int fm_rx_get_rssi_level(struct fmdev *, u16 *);
-int fm_rx_get_rssi_threshold(struct fmdev *, short *);
-int fm_rx_get_rfdepend_softmute(struct fmdev *, u8 *);
-int fm_rx_get_deemph_mode(struct fmdev *, u16 *);
-int fm_rx_get_af_switch(struct fmdev *, u8 *);
-void fm_rx_get_region(struct fmdev *, u8 *);
-
-int fm_rx_set_chanl_spacing(struct fmdev *, u8);
-int fm_rx_get_chanl_spacing(struct fmdev *, u8 *);
-#endif
-

drivers/media/radio/wl128x/fmdrv_tx.c

···
-// SPDX-License-Identifier: GPL-2.0-only
-/*
- *  FM Driver for Connectivity chip of Texas Instruments.
- *  This sub-module of FM driver implements FM TX functionality.
- *
- *  Copyright (C) 2011 Texas Instruments
- */
-
-#include <linux/delay.h>
-#include "fmdrv.h"
-#include "fmdrv_common.h"
-#include "fmdrv_tx.h"
-
-int fm_tx_set_stereo_mono(struct fmdev *fmdev, u16 mode)
-{
-	u16 payload;
-	int ret;
-
-	if (fmdev->tx_data.aud_mode == mode)
-		return 0;
-
-	fmdbg("stereo mode: %d\n", mode);
-
-	/* Set Stereo/Mono mode */
-	payload = (1 - mode);
-	ret = fmc_send_cmd(fmdev, MONO_SET, REG_WR, &payload,
-			sizeof(payload), NULL, NULL);
-	if (ret < 0)
-		return ret;
-
-	fmdev->tx_data.aud_mode = mode;
-
-	return ret;
-}
-
-static int set_rds_text(struct fmdev *fmdev, u8 *rds_text)
-{
-	u16 payload;
-	int ret;
-
-	ret = fmc_send_cmd(fmdev, RDS_DATA_SET, REG_WR, rds_text,
-			strlen(rds_text), NULL, NULL);
-	if (ret < 0)
-		return ret;
-
-	/* Scroll mode */
-	payload = (u16)0x1;
-	ret = fmc_send_cmd(fmdev, DISPLAY_MODE, REG_WR, &payload,
-			sizeof(payload), NULL, NULL);
-	if (ret < 0)
-		return ret;
-
-	return 0;
-}
-
-static int set_rds_data_mode(struct fmdev *fmdev, u8 mode)
-{
-	u16 payload;
-	int ret;
-
-	/* Setting unique PI TODO: how unique? */
-	payload = (u16)0xcafe;
-	ret = fmc_send_cmd(fmdev, PI_SET, REG_WR, &payload,
-			sizeof(payload), NULL, NULL);
-	if (ret < 0)
-		return ret;
-
-	/* Set decoder id */
-	payload = (u16)0xa;
-	ret = fmc_send_cmd(fmdev, DI_SET, REG_WR, &payload,
-			sizeof(payload), NULL, NULL);
-	if (ret < 0)
-		return ret;
-
-	/* TODO: RDS_MODE_GET? */
-	return 0;
-}
-
-static int set_rds_len(struct fmdev *fmdev, u8 type, u16 len)
-{
-	u16 payload;
-	int ret;
-
-	len |= type << 8;
-	payload = len;
-	ret = fmc_send_cmd(fmdev, RDS_CONFIG_DATA_SET, REG_WR, &payload,
-			sizeof(payload), NULL, NULL);
-	if (ret < 0)
-		return ret;
-
-	/* TODO: LENGTH_GET? */
-	return 0;
-}
-
-int fm_tx_set_rds_mode(struct fmdev *fmdev, u8 rds_en_dis)
-{
-	u16 payload;
-	int ret;
-	u8 rds_text[] = "Zoom2\n";
-
-	fmdbg("rds_en_dis:%d(E:%d, D:%d)\n", rds_en_dis,
-		   FM_RDS_ENABLE, FM_RDS_DISABLE);
-
-	if (rds_en_dis == FM_RDS_ENABLE) {
-		/* Set RDS length */
-		set_rds_len(fmdev, 0, strlen(rds_text));
-
-		/* Set RDS text */
-		set_rds_text(fmdev, rds_text);
-
-		/* Set RDS mode */
-		set_rds_data_mode(fmdev, 0x0);
-	}
-
-	/* Send command to enable RDS */
-	if (rds_en_dis == FM_RDS_ENABLE)
-		payload = 0x01;
-	else
-		payload = 0x00;
-
-	ret = fmc_send_cmd(fmdev, RDS_DATA_ENB, REG_WR, &payload,
-			sizeof(payload), NULL, NULL);
-	if (ret < 0)
-		return ret;
-
-	if (rds_en_dis == FM_RDS_ENABLE) {
-		/* Set RDS length */
-		set_rds_len(fmdev, 0, strlen(rds_text));
-
-		/* Set RDS text */
-		set_rds_text(fmdev, rds_text);
-	}
-	fmdev->tx_data.rds.flag = rds_en_dis;
-
-	return 0;
-}
-
-int fm_tx_set_radio_text(struct fmdev *fmdev, u8 *rds_text, u8 rds_type)
-{
-	u16 payload;
-	int ret;
-
-	if (fmdev->curr_fmmode != FM_MODE_TX)
-		return -EPERM;
-
-	fm_tx_set_rds_mode(fmdev, 0);
-
-	/* Set RDS length */
-	set_rds_len(fmdev, rds_type, strlen(rds_text));
-
-	/* Set RDS text */
-	set_rds_text(fmdev, rds_text);
-
-	/* Set RDS mode */
-	set_rds_data_mode(fmdev, 0x0);
-
-	payload = 1;
-	ret = fmc_send_cmd(fmdev, RDS_DATA_ENB, REG_WR, &payload,
-			sizeof(payload), NULL, NULL);
-	if (ret < 0)
-		return ret;
-
-	return 0;
-}
-
-int fm_tx_set_af(struct fmdev *fmdev, u32 af)
-{
-	u16 payload;
-	int ret;
-
-	if (fmdev->curr_fmmode != FM_MODE_TX)
-		return -EPERM;
-
-	fmdbg("AF: %d\n", af);
-
-	af = (af - 87500) / 100;
-	payload = (u16)af;
-	ret = fmc_send_cmd(fmdev, TA_SET, REG_WR, &payload,
-			sizeof(payload), NULL, NULL);
-	if (ret < 0)
-		return ret;
-
-	return 0;
-}
-
-int fm_tx_set_region(struct fmdev *fmdev, u8 region)
-{
-	u16 payload;
-	int ret;
-
-	if (region != FM_BAND_EUROPE_US && region != FM_BAND_JAPAN) {
-		fmerr("Invalid band\n");
-		return -EINVAL;
-	}
-
-	/* Send command to set the band */
-	payload = (u16)region;
-	ret = fmc_send_cmd(fmdev, TX_BAND_SET, REG_WR, &payload,
-			sizeof(payload), NULL, NULL);
-	if (ret < 0)
-		return ret;
-
-	return 0;
-}
-
-int fm_tx_set_mute_mode(struct fmdev *fmdev, u8 mute_mode_toset)
-{
-	u16 payload;
-	int ret;
-
-	fmdbg("tx: mute mode %d\n", mute_mode_toset);
-
-	payload = mute_mode_toset;
-	ret = fmc_send_cmd(fmdev, MUTE, REG_WR, &payload,
-			sizeof(payload), NULL, NULL);
-	if (ret < 0)
-		return ret;
-
-	return 0;
-}
-
-/* Set TX Audio I/O */
-static int set_audio_io(struct fmdev *fmdev)
-{
-	struct fmtx_data *tx = &fmdev->tx_data;
-	u16 payload;
-	int ret;
-
-	/* Set Audio I/O Enable */
-	payload = tx->audio_io;
-	ret = fmc_send_cmd(fmdev, AUDIO_IO_SET, REG_WR, &payload,
-			sizeof(payload), NULL, NULL);
-	if (ret < 0)
-		return ret;
-
-	/* TODO: is audio set? */
-	return 0;
-}
-
-/* Start TX Transmission */
-static int enable_xmit(struct fmdev *fmdev, u8 new_xmit_state)
-{
-	struct fmtx_data *tx = &fmdev->tx_data;
-	unsigned long timeleft;
-	u16 payload;
-	int ret;
-
-	/* Enable POWER_ENB interrupts */
-	payload = FM_POW_ENB_EVENT;
-	ret = fmc_send_cmd(fmdev, INT_MASK_SET, REG_WR, &payload,
-			sizeof(payload), NULL, NULL);
-	if (ret < 0)
-		return ret;
-
-	/* Set Power Enable */
-	payload = new_xmit_state;
-	ret = fmc_send_cmd(fmdev, POWER_ENB_SET, REG_WR, &payload,
-			sizeof(payload), NULL, NULL);
-	if (ret < 0)
-		return ret;
-
-	/* Wait for Power Enabled */
-	init_completion(&fmdev->maintask_comp);
-	timeleft = wait_for_completion_timeout(&fmdev->maintask_comp,
-			FM_DRV_TX_TIMEOUT);
-	if (!timeleft) {
-		fmerr("Timeout(%d sec),didn't get tune ended interrupt\n",
-			   jiffies_to_msecs(FM_DRV_TX_TIMEOUT) / 1000);
-		return -ETIMEDOUT;
-	}
-
-	set_bit(FM_CORE_TX_XMITING, &fmdev->flag);
-	tx->xmit_state = new_xmit_state;
-
-	return 0;
-}
-
-/* Set TX power level */
-int fm_tx_set_pwr_lvl(struct fmdev *fmdev, u8 new_pwr_lvl)
-{
-	u16 payload;
-	struct fmtx_data *tx = &fmdev->tx_data;
-	int ret;
-
-	if (fmdev->curr_fmmode != FM_MODE_TX)
-		return -EPERM;
-	fmdbg("tx: pwr_level_to_set %ld\n", (long int)new_pwr_lvl);
-
-	/* If the core isn't ready update global variable */
-	if (!test_bit(FM_CORE_READY, &fmdev->flag)) {
-		tx->pwr_lvl = new_pwr_lvl;
-		return 0;
-	}
-
-	/* Set power level: Application will specify power level value in
-	 * units of dB/uV, whereas range and step are specific to FM chip.
-	 * For TI's WL chips, convert application specified power level value
-	 * to chip specific value by subtracting 122 from it. Refer to TI FM
-	 * data sheet for details.
-	 * */
-
-	payload = (FM_PWR_LVL_HIGH - new_pwr_lvl);
-	ret = fmc_send_cmd(fmdev, POWER_LEV_SET, REG_WR, &payload,
-			sizeof(payload), NULL, NULL);
-	if (ret < 0)
-		return ret;
-
-	/* TODO: is the power level set? */
-	tx->pwr_lvl = new_pwr_lvl;
-
-	return 0;
-}
-
-/*
- * Sets FM TX pre-emphasis filter value (OFF, 50us, or 75us)
- * Convert V4L2 specified filter values to chip specific filter values.
- */
-int fm_tx_set_preemph_filter(struct fmdev *fmdev, u32 preemphasis)
-{
-	struct fmtx_data *tx = &fmdev->tx_data;
-	u16 payload;
-	int ret;
-
-	if (fmdev->curr_fmmode != FM_MODE_TX)
-		return -EPERM;
-
-	switch (preemphasis) {
-	case V4L2_PREEMPHASIS_DISABLED:
-		payload = FM_TX_PREEMPH_OFF;
-		break;
-	case V4L2_PREEMPHASIS_50_uS:
-		payload = FM_TX_PREEMPH_50US;
-		break;
-	case V4L2_PREEMPHASIS_75_uS:
-		payload = FM_TX_PREEMPH_75US;
-		break;
-	}
-
-	ret = fmc_send_cmd(fmdev, PREMPH_SET, REG_WR, &payload,
-			sizeof(payload), NULL, NULL);
-	if (ret < 0)
-		return ret;
-
-	tx->preemph = payload;
-
-	return ret;
-}
-
-/* Get the TX tuning capacitor value.*/
-int fm_tx_get_tune_cap_val(struct fmdev *fmdev)
-{
-	u16 curr_val;
-	u32 resp_len;
-	int ret;
-
-	if (fmdev->curr_fmmode != FM_MODE_TX)
-		return -EPERM;
-
-	ret = fmc_send_cmd(fmdev, READ_FMANT_TUNE_VALUE, REG_RD,
-			NULL, sizeof(curr_val), &curr_val, &resp_len);
-	if (ret < 0)
-		return ret;
-
-	curr_val = be16_to_cpu((__force __be16)curr_val);
-
-	return curr_val;
-}
-
-/* Set TX Frequency */
-int fm_tx_set_freq(struct fmdev *fmdev, u32 freq_to_set)
-{
-	struct fmtx_data *tx = &fmdev->tx_data;
-	u16 payload, chanl_index;
-	int ret;
-
-	if (test_bit(FM_CORE_TX_XMITING, &fmdev->flag)) {
-		enable_xmit(fmdev, 0);
-		clear_bit(FM_CORE_TX_XMITING, &fmdev->flag);
-	}
-
-	/* Enable FR, BL interrupts */
-	payload = (FM_FR_EVENT | FM_BL_EVENT);
-	ret = fmc_send_cmd(fmdev, INT_MASK_SET, REG_WR, &payload,
-			sizeof(payload), NULL, NULL);
-	if (ret < 0)
-		return ret;
-
-	tx->tx_frq = (unsigned long)freq_to_set;
-	fmdbg("tx: freq_to_set %ld\n", (long int)tx->tx_frq);
-
-	chanl_index = freq_to_set / 10;
-
-	/* Set current tuner channel */
-	payload = chanl_index;
-	ret = fmc_send_cmd(fmdev, CHANL_SET, REG_WR, &payload,
-			sizeof(payload), NULL, NULL);
-	if (ret < 0)
-		return ret;
-
-	fm_tx_set_pwr_lvl(fmdev, tx->pwr_lvl);
-	fm_tx_set_preemph_filter(fmdev, tx->preemph);
-
-	tx->audio_io = 0x01;	/* I2S */
-	set_audio_io(fmdev);
-
-	enable_xmit(fmdev, 0x01);	/* Enable transmission */
-
-	tx->aud_mode = FM_STEREO_MODE;
-	tx->rds.flag = FM_RDS_DISABLE;
-
-	return 0;
-}
-

drivers/media/radio/wl128x/fmdrv_tx.h

···
-/* SPDX-License-Identifier: GPL-2.0-only */
-/*
- *  FM Driver for Connectivity chip of Texas Instruments.
- *  FM TX module header.
- *
- *  Copyright (C) 2011 Texas Instruments
- */
-
-#ifndef _FMDRV_TX_H
-#define _FMDRV_TX_H
-
-int fm_tx_set_freq(struct fmdev *, u32);
-int fm_tx_set_pwr_lvl(struct fmdev *, u8);
-int fm_tx_set_region(struct fmdev *, u8);
-int fm_tx_set_mute_mode(struct fmdev *, u8);
-int fm_tx_set_stereo_mono(struct fmdev *, u16);
-int fm_tx_set_rds_mode(struct fmdev *, u8);
-int fm_tx_set_radio_text(struct fmdev *, u8 *, u8);
-int fm_tx_set_af(struct fmdev *, u32);
-int fm_tx_set_preemph_filter(struct fmdev *, u32);
-int fm_tx_get_tune_cap_val(struct fmdev *);
-
-#endif
-

drivers/media/radio/wl128x/fmdrv_v4l2.c

···
-// SPDX-License-Identifier: GPL-2.0-only
-/*
- *  FM Driver for Connectivity chip of Texas Instruments.
- *  This file provides interfaces to V4L2 subsystem.
- *
- *  This module registers with V4L2 subsystem as Radio
- *  data system interface (/dev/radio). During the registration,
- *  it will expose two set of function pointers.
- *
- *    1) File operation related API (open, close, read, write, poll...etc).
- *    2) Set of V4L2 IOCTL complaint API.
- *
- *  Copyright (C) 2011 Texas Instruments
- *  Author: Raja Mani <[e-mail]>
- *  Author: Manjunatha Halli <[e-mail]>
- */
-
-#include <linux/export.h>
-
-#include "fmdrv.h"
-#include "fmdrv_v4l2.h"
-#include "fmdrv_common.h"
-#include "fmdrv_rx.h"
-#include "fmdrv_tx.h"
-
-static struct video_device gradio_dev;
-static u8 radio_disconnected;
-
-/* -- V4L2 RADIO (/dev/radioX) device file operation interfaces --- */
-
-/* Read RX RDS data */
-static ssize_t fm_v4l2_fops_read(struct file *file, char __user * buf,
-					size_t count, loff_t *ppos)
-{
-	u8 rds_mode;
-	int ret;
-	struct fmdev *fmdev;
-
-	fmdev = video_drvdata(file);
-
-	if (!radio_disconnected) {
-		fmerr("FM device is already disconnected\n");
-		return -EIO;
-	}
-
-	if (mutex_lock_interruptible(&fmdev->mutex))
-		return -ERESTARTSYS;
-
-	/* Turn on RDS mode if it is disabled */
-	ret = fm_rx_get_rds_mode(fmdev, &rds_mode);
-	if (ret < 0) {
-		fmerr("Unable to read current rds mode\n");
-		goto read_unlock;
-	}
-
-	if (rds_mode == FM_RDS_DISABLE) {
-		ret = fmc_set_rds_mode(fmdev, FM_RDS_ENABLE);
-		if (ret < 0) {
-			fmerr("Failed to enable rds mode\n");
-			goto read_unlock;
-		}
-	}
-
-	/* Copy RDS data from internal buffer to user buffer */
-	ret = fmc_transfer_rds_from_internal_buff(fmdev, file, buf, count);
-read_unlock:
-	mutex_unlock(&fmdev->mutex);
-	return ret;
-}
-
-/* Write TX RDS data */
-static ssize_t fm_v4l2_fops_write(struct file *file, const char __user * buf,
-		size_t count, loff_t *ppos)
-{
-	struct tx_rds rds;
-	int ret;
-	struct fmdev *fmdev;
-
-	ret = copy_from_user(&rds, buf, sizeof(rds));
-	rds.text[sizeof(rds.text) - 1] = '\0';
-	fmdbg("(%d)type: %d, text %s, af %d\n",
-		   ret, rds.text_type, rds.text, rds.af_freq);
-	if (ret)
-		return -EFAULT;
-
-	fmdev = video_drvdata(file);
-	if (mutex_lock_interruptible(&fmdev->mutex))
-		return -ERESTARTSYS;
-	fm_tx_set_radio_text(fmdev, rds.text, rds.text_type);
-	fm_tx_set_af(fmdev, rds.af_freq);
-	mutex_unlock(&fmdev->mutex);
-
-	return sizeof(rds);
-}
-
-static __poll_t fm_v4l2_fops_poll(struct file *file, struct poll_table_struct *pts)
-{
-	int ret;
-	struct fmdev *fmdev;
-
-	fmdev = video_drvdata(file);
-	mutex_lock(&fmdev->mutex);
-	ret = fmc_is_rds_data_available(fmdev, file, pts);
-	mutex_unlock(&fmdev->mutex);
-	if (ret < 0)
-		return EPOLLIN | EPOLLRDNORM;
-
-	return 0;
-}
-
-/*
- * Handle open request for "/dev/radioX" device.
- * Start with FM RX mode as default.
- */
-static int fm_v4l2_fops_open(struct file *file)
-{
-	int ret;
-	struct fmdev *fmdev = NULL;
-
-	/* Don't allow multiple open */
-	if (radio_disconnected) {
-		fmerr("FM device is already opened\n");
-		return -EBUSY;
-	}
-
-	fmdev = video_drvdata(file);
-
-	if (mutex_lock_interruptible(&fmdev->mutex))
-		return -ERESTARTSYS;
-	ret = fmc_prepare(fmdev);
-	if (ret < 0) {
-		fmerr("Unable to prepare FM CORE\n");
-		goto open_unlock;
-	}
-
-	fmdbg("Load FM RX firmware..\n");
-
-	ret = fmc_set_mode(fmdev, FM_MODE_RX);
-	if (ret < 0) {
-		fmerr("Unable to load FM RX firmware\n");
-		goto open_unlock;
-	}
-	radio_disconnected = 1;
-
-open_unlock:
-	mutex_unlock(&fmdev->mutex);
-	return ret;
-}
-
-static int fm_v4l2_fops_release(struct file *file)
-{
-	int ret;
-	struct fmdev *fmdev;
-
-	fmdev = video_drvdata(file);
-	if (!radio_disconnected) {
-		fmdbg("FM device is already closed\n");
-		return 0;
-	}
-
-	mutex_lock(&fmdev->mutex);
-	ret = fmc_set_mode(fmdev, FM_MODE_OFF);
-	if (ret < 0) {
-		fmerr("Unable to turn off the chip\n");
-		goto release_unlock;
-	}
-
-	ret = fmc_release(fmdev);
-	if (ret < 0) {
-		fmerr("FM CORE release failed\n");
-		goto release_unlock;
-	}
-	radio_disconnected = 0;
-
-release_unlock:
-	mutex_unlock(&fmdev->mutex);
-	return ret;
-}
-
-/* V4L2 RADIO (/dev/radioX) device IOCTL interfaces */
-static int fm_v4l2_vidioc_querycap(struct file *file, void *priv,
-		struct v4l2_capability *capability)
-{
-	strscpy(capability->driver, FM_DRV_NAME, sizeof(capability->driver));
-	strscpy(capability->card, FM_DRV_CARD_SHORT_NAME,
-		sizeof(capability->card));
-	sprintf(capability->bus_info, "UART");
-	return 0;
-}
-
-static int fm_g_volatile_ctrl(struct v4l2_ctrl *ctrl)
-{
-	struct fmdev *fmdev = container_of(ctrl->handler,
-			struct fmdev, ctrl_handler);
-
-	switch (ctrl->id) {
-	case  V4L2_CID_TUNE_ANTENNA_CAPACITOR:
-		ctrl->val = fm_tx_get_tune_cap_val(fmdev);
-		break;
-	default:
-		fmwarn("%s: Unknown IOCTL: %d\n", __func__, ctrl->id);
-		break;
-	}
-
-	return 0;
-}
-
-static int fm_v4l2_s_ctrl(struct v4l2_ctrl *ctrl)
-{
-	struct fmdev *fmdev = container_of(ctrl->handler,
-			struct fmdev, ctrl_handler);
-
-	switch (ctrl->id) {
-	case V4L2_CID_AUDIO_VOLUME:	/* set volume */
-		return fm_rx_set_volume(fmdev, (u16)ctrl->val);
-
-	case V4L2_CID_AUDIO_MUTE:	/* set mute */
-		return fmc_set_mute_mode(fmdev, (u8)ctrl->val);
-
-	case V4L2_CID_TUNE_POWER_LEVEL:
-		/* set TX power level - ext control */
-		return fm_tx_set_pwr_lvl(fmdev, (u8)ctrl->val);
-
-	case V4L2_CID_TUNE_PREEMPHASIS:
-		return fm_tx_set_preemph_filter(fmdev, (u8) ctrl->val);
-
-	default:
-		return -EINVAL;
-	}
-}
-
-static int fm_v4l2_vidioc_g_audio(struct file *file, void *priv,
-		struct v4l2_audio *audio)
-{
-	memset(audio, 0, sizeof(*audio));
-	strscpy(audio->name, "Radio", sizeof(audio->name));
-	audio->capability = V4L2_AUDCAP_STEREO;
-
-	return 0;
-}
-
-static int fm_v4l2_vidioc_s_audio(struct file *file, void *priv,
-		const struct v4l2_audio *audio)
-{
-	if (audio->index != 0)
-		return -EINVAL;
-
-	return 0;
-}
-
-/* Get tuner attributes. If current mode is NOT RX, return error */
-static int fm_v4l2_vidioc_g_tuner(struct file *file, void *priv,
-		struct v4l2_tuner *tuner)
-{
-	struct fmdev *fmdev = video_drvdata(file);
-	u32 bottom_freq;
-	u32 top_freq;
-	u16 stereo_mono_mode;
-	u16 rssilvl;
-	int ret;
-
-	if (tuner->index != 0)
-		return -EINVAL;
-
-	if (fmdev->curr_fmmode != FM_MODE_RX)
-		return -EPERM;
-
-	ret = fm_rx_get_band_freq_range(fmdev, &bottom_freq, &top_freq);
-	if (ret != 0)
-		return ret;
-
-	ret = fm_rx_get_stereo_mono(fmdev, &stereo_mono_mode);
-	if (ret != 0)
-		return ret;
-
-	ret = fm_rx_get_rssi_level(fmdev, &rssilvl);
-	if (ret != 0)
-		return ret;
-
-	strscpy(tuner->name, "FM", sizeof(tuner->name));
-	tuner->type = V4L2_TUNER_RADIO;
-	/* Store rangelow and rangehigh freq in unit of 62.5 Hz */
-	tuner->rangelow = bottom_freq * 16;
-	tuner->rangehigh = top_freq * 16;
-	tuner->rxsubchans = V4L2_TUNER_SUB_MONO | V4L2_TUNER_SUB_STEREO |
-	((fmdev->rx.rds.flag == FM_RDS_ENABLE) ? V4L2_TUNER_SUB_RDS : 0);
-	tuner->capability = V4L2_TUNER_CAP_STEREO | V4L2_TUNER_CAP_RDS |
-			    V4L2_TUNER_CAP_LOW |
-			    V4L2_TUNER_CAP_HWSEEK_BOUNDED |
-			    V4L2_TUNER_CAP_HWSEEK_WRAP;
-	tuner->audmode = (stereo_mono_mode ?
-			  V4L2_TUNER_MODE_MONO : V4L2_TUNER_MODE_STEREO);
-
-	/*
-	 * Actual rssi value lies in between -128 to +127.
-	 * Convert this range from 0 to 255 by adding +128
-	 */
-	rssilvl += 128;
-
-	/*
-	 * Return signal strength value should be within 0 to 65535.
-	 * Find out correct signal radio by multiplying (65535/255) = 257
-	 */
-	tuner->signal = rssilvl * 257;
-	tuner->afc = 0;
-
-	return ret;
-}
-
-/*
- * Set tuner attributes. If current mode is NOT RX, set to RX.
- * Currently, we set only audio mode (mono/stereo) and RDS state (on/off).
- * Should we set other tuner attributes, too?
- */
-static int fm_v4l2_vidioc_s_tuner(struct file *file, void *priv,
-		const struct v4l2_tuner *tuner)
-{
-	struct fmdev *fmdev = video_drvdata(file);
-	u16 aud_mode;
-	u8 rds_mode;
-	int ret;
-
-	if (tuner->index != 0)
-		return -EINVAL;
-
-	aud_mode = (tuner->audmode == V4L2_TUNER_MODE_STEREO) ?
-			FM_STEREO_MODE : FM_MONO_MODE;
-	rds_mode = (tuner->rxsubchans & V4L2_TUNER_SUB_RDS) ?
-			FM_RDS_ENABLE : FM_RDS_DISABLE;
-
-	if (fmdev->curr_fmmode != FM_MODE_RX) {
-		ret = fmc_set_mode(fmdev, FM_MODE_RX);
-		if (ret < 0) {
-			fmerr("Failed to set RX mode\n");
-			return ret;
-		}
-	}
-
-	ret = fmc_set_stereo_mono(fmdev, aud_mode);
-	if (ret < 0) {
-		fmerr("Failed to set RX stereo/mono mode\n");
-		return ret;
-	}
-
-	ret = fmc_set_rds_mode(fmdev, rds_mode);
-	if (ret < 0)
-		fmerr("Failed to set RX RDS mode\n");
-
-	return ret;
-}
-
-/* Get tuner or modulator radio frequency */
-static int fm_v4l2_vidioc_g_freq(struct file *file, void *priv,
-		struct v4l2_frequency *freq)
-{
-	struct fmdev *fmdev = video_drvdata(file);
-	int ret;
-
-	ret = fmc_get_freq(fmdev, &freq->frequency);
-	if (ret < 0) {
-		fmerr("Failed to get frequency\n");
-		return ret;
-	}
-
-	/* Frequency unit of 62.5 Hz*/
-	freq->frequency = (u32) freq->frequency * 16;
-
-	return 0;
-}
-
-/* Set tuner or modulator radio frequency */
-static int fm_v4l2_vidioc_s_freq(struct file *file, void *priv,
-		const struct v4l2_frequency *freq)
-{
-	struct fmdev *fmdev = video_drvdata(file);
-
-	/*
-	 * As V4L2_TUNER_CAP_LOW is set 1 user sends the frequency
-	 * in units of 62.5 Hz.
-	 */
-	return fmc_set_freq(fmdev, freq->frequency / 16);
-}
-
-/* Set hardware frequency seek. If current mode is NOT RX, set it RX. */
-static int fm_v4l2_vidioc_s_hw_freq_seek(struct file *file, void *priv,
-		const struct v4l2_hw_freq_seek *seek)
-{
-	struct fmdev *fmdev = video_drvdata(file);
-	int ret;
-
-	if (file->f_flags & O_NONBLOCK)
-		return -EWOULDBLOCK;
-
-	if (fmdev->curr_fmmode != FM_MODE_RX) {
-		ret = fmc_set_mode(fmdev, FM_MODE_RX);
-		if (ret != 0) {
-			fmerr("Failed to set RX mode\n");
-			return ret;
-		}
-	}
-
-	ret = fm_rx_seek(fmdev, seek->seek_upward, seek->wrap_around,
-			seek->spacing);
-	if (ret < 0)
-		fmerr("RX seek failed - %d\n", ret);
-
-	return ret;
-}
-/* Get modulator attributes. If mode is not TX, return no attributes. */
-static int fm_v4l2_vidioc_g_modulator(struct file *file, void *priv,
-		struct v4l2_modulator *mod)
-{
-	struct fmdev *fmdev = video_drvdata(file);
-
-	if (mod->index != 0)
-		return -EINVAL;
-
-	if (fmdev->curr_fmmode != FM_MODE_TX)
-		return -EPERM;
-
-	mod->txsubchans = ((fmdev->tx_data.aud_mode == FM_STEREO_MODE) ?
-				V4L2_TUNER_SUB_STEREO : V4L2_TUNER_SUB_MONO) |
-				((fmdev->tx_data.rds.flag == FM_RDS_ENABLE) ?
-				V4L2_TUNER_SUB_RDS : 0);
-
-	mod->capability = V4L2_TUNER_CAP_STEREO | V4L2_TUNER_CAP_RDS |
-				V4L2_TUNER_CAP_LOW;
-
-	return 0;
-}
-
-/* Set modulator attributes. If mode is not TX, set to TX. */
-static int fm_v4l2_vidioc_s_modulator(struct file *file, void *priv,
-		const struct v4l2_modulator *mod)
-{
-	struct fmdev *fmdev = video_drvdata(file);
-	u8 rds_mode;
-	u16 aud_mode;
-	int ret;
-
-	if (mod->index != 0)
-		return -EINVAL;
-
-	if (fmdev->curr_fmmode != FM_MODE_TX) {
-		ret = fmc_set_mode(fmdev, FM_MODE_TX);
-		if (ret != 0) {
-			fmerr("Failed to set TX mode\n");
-			return ret;
-		}
-	}
-
-	aud_mode = (mod->txsubchans & V4L2_TUNER_SUB_STEREO) ?
-			FM_STEREO_MODE : FM_MONO_MODE;
-	rds_mode = (mod->txsubchans & V4L2_TUNER_SUB_RDS) ?
-			FM_RDS_ENABLE : FM_RDS_DISABLE;
-	ret = fm_tx_set_stereo_mono(fmdev, aud_mode);
-	if (ret < 0) {
-		fmerr("Failed to set mono/stereo mode for TX\n");
-		return ret;
-	}
-	ret = fm_tx_set_rds_mode(fmdev, rds_mode);
-	if (ret < 0)
-		fmerr("Failed to set rds mode for TX\n");
-
-	return ret;
-}
-
-static const struct v4l2_file_operations fm_drv_fops = {
-	.owner = THIS_MODULE,
-	.read = fm_v4l2_fops_read,
-	.write = fm_v4l2_fops_write,
-	.poll = fm_v4l2_fops_poll,
-	.unlocked_ioctl = video_ioctl2,
-	.open = fm_v4l2_fops_open,
-	.release = fm_v4l2_fops_release,
-};
-
-static const struct v4l2_ctrl_ops fm_ctrl_ops = {
-	.s_ctrl = fm_v4l2_s_ctrl,
-	.g_volatile_ctrl = fm_g_volatile_ctrl,
-};
-static const struct v4l2_ioctl_ops fm_drv_ioctl_ops = {
-	.vidioc_querycap = fm_v4l2_vidioc_querycap,
-	.vidioc_g_audio = fm_v4l2_vidioc_g_audio,
-	.vidioc_s_audio = fm_v4l2_vidioc_s_audio,
-	.vidioc_g_tuner = fm_v4l2_vidioc_g_tuner,
-	.vidioc_s_tuner = fm_v4l2_vidioc_s_tuner,
-	.vidioc_g_frequency = fm_v4l2_vidioc_g_freq,
-	.vidioc_s_frequency = fm_v4l2_vidioc_s_freq,
-	.vidioc_s_hw_freq_seek = fm_v4l2_vidioc_s_hw_freq_seek,
-	.vidioc_g_modulator = fm_v4l2_vidioc_g_modulator,
-	.vidioc_s_modulator = fm_v4l2_vidioc_s_modulator
-};
-
-/* V4L2 RADIO device parent structure */
-static const struct video_device fm_viddev_template = {
-	.fops = &fm_drv_fops,
-	.ioctl_ops = &fm_drv_ioctl_ops,
-	.name = FM_DRV_NAME,
-	.release = video_device_release_empty,
-	/*
-	 * To ensure both the tuner and modulator ioctls are accessible we
-	 * set the vfl_dir to M2M to indicate this.
-	 *
-	 * It is not really a mem2mem device of course, but it can both receive
-	 * and transmit using the same radio device. It's the only radio driver
-	 * that does this and it should really be split in two radio devices,
-	 * but that would affect applications using this driver.
-	 */
-	.vfl_dir = VFL_DIR_M2M,
-	.device_caps = V4L2_CAP_HW_FREQ_SEEK | V4L2_CAP_TUNER | V4L2_CAP_RADIO |
-		       V4L2_CAP_MODULATOR | V4L2_CAP_AUDIO |
-		       V4L2_CAP_READWRITE | V4L2_CAP_RDS_CAPTURE,
-};
-
-int fm_v4l2_init_video_device(struct fmdev *fmdev, int radio_nr)
-{
-	struct v4l2_ctrl *ctrl;
-	int ret;
-
-	strscpy(fmdev->v4l2_dev.name, FM_DRV_NAME,
-		sizeof(fmdev->v4l2_dev.name));
-	ret = v4l2_device_register(NULL, &fmdev->v4l2_dev);
-	if (ret < 0)
-		return ret;
-
-	/* Init mutex for core locking */
-	mutex_init(&fmdev->mutex);
-
-	/* Setup FM driver's V4L2 properties */
-	gradio_dev = fm_viddev_template;
-
-	video_set_drvdata(&gradio_dev, fmdev);
-
-	gradio_dev.lock = &fmdev->mutex;
-	gradio_dev.v4l2_dev = &fmdev->v4l2_dev;
-
-	/* Register with V4L2 subsystem as RADIO device */
-	if (video_register_device(&gradio_dev, VFL_TYPE_RADIO, radio_nr)) {
-		v4l2_device_unregister(&fmdev->v4l2_dev);
-		fmerr("Could not register video device\n");
-		return -ENOMEM;
-	}
-
-	fmdev->radio_dev = &gradio_dev;
-
-	/* Register to v4l2 ctrl handler framework */
-	fmdev->radio_dev->ctrl_handler = &fmdev->ctrl_handler;
-
-	ret = v4l2_ctrl_handler_init(&fmdev->ctrl_handler, 5);
-	if (ret < 0) {
-		fmerr("(fmdev): Can't init ctrl handler\n");
-		v4l2_ctrl_handler_free(&fmdev->ctrl_handler);
-		video_unregister_device(fmdev->radio_dev);
-		v4l2_device_unregister(&fmdev->v4l2_dev);
-		return -EBUSY;
-	}
-
-	/*
-	 * Following controls are handled by V4L2 control framework.
-	 * Added in ascending ID order.
-	 */
-	v4l2_ctrl_new_std(&fmdev->ctrl_handler, &fm_ctrl_ops,
-			V4L2_CID_AUDIO_VOLUME, FM_RX_VOLUME_MIN,
-			FM_RX_VOLUME_MAX, 1, FM_RX_VOLUME_MAX);
-
-	v4l2_ctrl_new_std(&fmdev->ctrl_handler, &fm_ctrl_ops,
-			V4L2_CID_AUDIO_MUTE, 0, 1, 1, 1);
-
-	v4l2_ctrl_new_std_menu(&fmdev->ctrl_handler, &fm_ctrl_ops,
-			V4L2_CID_TUNE_PREEMPHASIS, V4L2_PREEMPHASIS_75_uS,
-			0, V4L2_PREEMPHASIS_75_uS);
-
-	v4l2_ctrl_new_std(&fmdev->ctrl_handler, &fm_ctrl_ops,
-			V4L2_CID_TUNE_POWER_LEVEL, FM_PWR_LVL_LOW,
-			FM_PWR_LVL_HIGH, 1, FM_PWR_LVL_HIGH);
-
-	ctrl = v4l2_ctrl_new_std(&fmdev->ctrl_handler, &fm_ctrl_ops,
-			V4L2_CID_TUNE_ANTENNA_CAPACITOR, 0,
-			255, 1, 255);
-
-	if (ctrl)
-		ctrl->flags |= V4L2_CTRL_FLAG_VOLATILE;
-
-	return 0;
-}
-
-void *fm_v4l2_deinit_video_device(void)
-{
-	struct fmdev *fmdev;
-
-
-	fmdev = video_get_drvdata(&gradio_dev);
-
-	/* Unregister to v4l2 ctrl handler framework*/
-	v4l2_ctrl_handler_free(&fmdev->ctrl_handler);
-
-	/* Unregister RADIO device from V4L2 subsystem */
-	video_unregister_device(&gradio_dev);
-
-	v4l2_device_unregister(&fmdev->v4l2_dev);
-
-	return fmdev;
-}

drivers/media/radio/wl128x/fmdrv_v4l2.h

···
-/* SPDX-License-Identifier: GPL-2.0-only */
-/*
- *  FM Driver for Connectivity chip of Texas Instruments.
- *
- *  FM V4L2 module header.
- *
- *  Copyright (C) 2011 Texas Instruments
- */
-
-#ifndef _FMDRV_V4L2_H
-#define _FMDRV_V4L2_H
-
-#include <media/v4l2-ioctl.h>
-#include <media/v4l2-common.h>
-#include <media/v4l2-ctrls.h>
-
-int fm_v4l2_init_video_device(struct fmdev *, int);
-void *fm_v4l2_deinit_video_device(void);
-
-#endif