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From: raja_mani on 13 Aug 2010 10:00
From: Raja-Mani <x0102026(a)ti.com>

This is a common header used in all FM submodules
(FM V4L2,FM common,FM Rx).

Signed-off-by: Raja-Mani <x0102026(a)ti.com>
Signed-off-by: Pramodh AG <pramodh_ag(a)ti.com>
Signed-off-by: Pavan Savoy <pavan_savoy(a)ti.com>
---
drivers/staging/ti-st/fmdrv.h | 225 +++++++++++++++++++++++++++++++++++++++++
1 files changed, 225 insertions(+), 0 deletions(-)
create mode 100644 drivers/staging/ti-st/fmdrv.h

diff --git a/drivers/staging/ti-st/fmdrv.h b/drivers/staging/ti-st/fmdrv.h
new file mode 100644
index 0000000..d560570
--- /dev/null
+++ b/drivers/staging/ti-st/fmdrv.h
@@ -0,0 +1,225 @@
+/*
+ * FM Driver for Connectivity chip of Texas Instruments.
+ *
+ * Common header for all FM driver sub-modules.
+ *
+ * Copyright (C) 2009 Texas Instruments
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ */
+
+#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/version.h>
+
+#define FM_DRV_VERSION "0.01"
+/* Should match with FM_DRV_VERSION */
+#define FM_DRV_RADIO_VERSION KERNEL_VERSION(0, 0, 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_FIRMWARE_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_DRV_TX_TIMEOUT (5*HZ) /* 5 seconds */
+#define FM_DRV_RX_SEEK_TIMEOUT (20*HZ) /* 20 seconds */
+
+#define NO_OF_ENTRIES_IN_ARRAY(array) (sizeof(array) / sizeof(array[0]))
+
+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 {
+ unsigned char rdsbuff[FM_RX_RDS_INFO_FIELD_MAX];
+ } groupdatabuff;
+ struct {
+ unsigned short pidata;
+ unsigned char block_b_byte1;
+ unsigned char block_b_byte2;
+ unsigned char block_c_byte1;
+ unsigned char block_c_byte2;
+ unsigned char block_d_byte1;
+ unsigned char block_d_byte2;
+ } groupgeneral;
+ struct {
+ unsigned short pidata;
+ unsigned char block_b_byte1;
+ unsigned char block_b_byte2;
+ unsigned char firstaf;
+ unsigned char secondaf;
+ unsigned char firstpsbyte;
+ unsigned char secondpsbyte;
+ } group0A;
+
+ struct {
+ unsigned short pidata;
+ unsigned char block_b_byte1;
+ unsigned char block_b_byte2;
+ unsigned short pidata2;
+ unsigned char firstpsbyte;
+ unsigned char secondpsbyte;
+ } group0B;
+ } rdsdata;
+};
+
+/* FM region (Europe/US, Japan) info */
+struct region_info {
+ unsigned int channel_spacing;
+ unsigned int bottom_frequency;
+ unsigned int top_frequency;
+ unsigned char region_index;
+};
+
+typedef void (*int_handler_prototype) (void *);
+
+/* FM Interrupt processing related info */
+struct fm_irq {
+ unsigned char stage_index;
+ unsigned short flag; /* FM interrupt flag */
+ unsigned short mask; /* FM interrupt mask */
+ /* Interrupt process timeout handler */
+ struct timer_list int_timeout_timer;
+ unsigned char irq_service_timeout_retry;
+ int_handler_prototype *fm_int_handlers;
+};
+
+/* RDS info */
+struct fm_rds {
+ unsigned char flag; /* RX RDS on/off status */
+ unsigned char last_block_index; /* Last received RDS block */
+
+ /* RDS buffer */
+ wait_queue_head_t read_queue;
+ unsigned int buf_size; /* Size is always multiple of 3 */
+ unsigned int wr_index;
+ unsigned int rd_index;
+ unsigned char *buffer;
+};
+
+#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 strengh is below RSSI threshold.
+ */
+struct tuned_station_info {
+ unsigned short picode;
+ unsigned int af_cache[FM_RDS_MAX_AF_LIST];
+ unsigned char no_of_items_in_afcache;
+ unsigned char af_list_max;
+};
+
+/* FM RX mode info */
+struct fm_rx {
+ struct region_info region; /* Current selected band */
+ unsigned int curr_freq; /* Current RX frquency */
+ unsigned char curr_mute_mode; /* Current mute mode */
+ /* RF dependent soft mute mode */
+ unsigned char curr_rf_depend_mute;
+ unsigned short curr_volume; /* Current volume level */
+ short curr_rssi_threshold; /* Current RSSI threshold level */
+ /* Holds the index of the current AF jump */
+ unsigned char cur_afjump_index;
+ /* Will hold the frequency before the jump */
+ unsigned int freq_before_jump;
+ unsigned char rds_mode; /* RDS operation mode (RDS/RDBS) */
+ unsigned char af_mode; /* Alternate frequency on/off */
+ struct tuned_station_info cur_station_info;
+ struct fm_rds rds;
+};
+
+/*
+ * 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 {
+ unsigned char text_type;
+ unsigned char text[25];
+ unsigned int 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 {
+ unsigned char pwr_lvl;
+ unsigned char xmit_state;
+ unsigned char audio_io;
+ unsigned long tx_frq;
+ struct tx_rds rds;
+};
+
+/* FM driver operation structure */
+struct fmdrv_ops {
+ struct video_device *radio_dev; /* V4L2 video device pointer */
+ struct snd_card *card; /* Card which holds FM mixer controls */
+ unsigned short 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 */
+ char streg_cbdata; /* status of ST registration */
+
+ struct sk_buff_head rx_q; /* RX queue */
+ struct tasklet_struct rx_task; /* RX Tasklet */
+
+ struct sk_buff_head tx_q; /* TX queue */
+ struct tasklet_struct tx_task; /* TX Tasklet */
+ 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 *response_skb; /* Response from the chip */
+ /* Main task completion handler */
+ struct completion maintask_completion;
+ /* Opcode of last command sent to the chip */
+ unsigned char last_sent_pkt_opcode;
+ /* Handler used for wakeup when response packet is received */
+ struct completion *response_completion;
+ struct fm_irq irq_info;
+ unsigned char curr_fmmode; /* Current FM chip mode (TX, RX, OFF) */
+ struct fm_rx rx; /* FM receiver info */
+ struct fmtx_data tx_data;
+};
+#endif
--
1.5.6.3

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Prev: BUG: unable to handle kernel paging request at ffffffffffffffff
Next: [PATCH/RFC 0/6] FM V4L2 driver for WL128x