diff options
Diffstat (limited to 'drivers/media')
| -rw-r--r-- | drivers/media/radio/radio-si470x.c | 843 |
1 files changed, 407 insertions, 436 deletions
diff --git a/drivers/media/radio/radio-si470x.c b/drivers/media/radio/radio-si470x.c index ccb167a..d54fe64 100644 --- a/drivers/media/radio/radio-si470x.c +++ b/drivers/media/radio/radio-si470x.c @@ -5,7 +5,7 @@ * - Silicon Labs USB FM Radio Reference Design * - ADS/Tech FM Radio Receiver (formerly Instant FM Music) (RDX-155-EF) * - * Copyright (c) 2007 Tobias Lorenz <tobias.lorenz@gmx.net> + * Copyright (c) 2008 Tobias Lorenz <tobias.lorenz@gmx.net> * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by @@ -29,7 +29,7 @@ * Version 1.0.0 * - First working version * 2008-01-13 Tobias Lorenz <tobias.lorenz@gmx.net> - * Version 1.0.1 + * Version 1.0.1 * - Improved error handling, every function now returns errno * - Improved multi user access (start/mute/stop) * - Channel doesn't get lost anymore after start/mute/stop @@ -47,6 +47,14 @@ * - check for firmware version 15 * - code order and prototypes still remain the same * - spacing and bottom of band codes remain the same + * 2008-01-16 Tobias Lorenz <tobias.lorenz@gmx.net> + * Version 1.0.3 + * - code reordered to avoid function prototypes + * - switch/case defaults are now more user-friendly + * - unified comment style + * - applied all checkpatch.pl v1.12 suggestions + * except the warning about the too long lines with bit comments + * - renamed FMRADIO to RADIO to cut line length (checkpatch.pl) * * ToDo: * - check USB Vendor/Product ID for ADS/Tech FM Radio Receiver @@ -55,13 +63,14 @@ * - add firmware download/update support * - add possibility to switch off RDS * - RDS support: interrupt mode, instead of polling - * - add LED status output + * - add LED status output (check if that's not already done in firmware) */ + /* driver definitions */ #define DRIVER_AUTHOR "Tobias Lorenz <tobias.lorenz@gmx.net>" #define DRIVER_NAME "radio-si470x" -#define DRIVER_VERSION KERNEL_VERSION(1, 0, 2) +#define DRIVER_VERSION KERNEL_VERSION(1, 0, 3) #define DRIVER_CARD "Silicon Labs Si470x FM Radio Receiver" #define DRIVER_DESC "USB radio driver for Si470x FM Radio Receivers" @@ -80,6 +89,21 @@ #include <media/rds.h> +/* USB Device ID List */ +static struct usb_device_id si470x_usb_driver_id_table[] = { + /* Silicon Labs USB FM Radio Reference Design */ + { USB_DEVICE_AND_INTERFACE_INFO(0x10c4, 0x818a, USB_CLASS_HID, 0, 0) }, + /* Terminating entry */ + { } +}; +MODULE_DEVICE_TABLE(usb, si470x_usb_driver_id_table); + + + +/************************************************************************** + * Module Parameters + **************************************************************************/ + /* Radio Nr */ static int radio_nr = -1; module_param(radio_nr, int, 0); @@ -145,8 +169,8 @@ MODULE_PARM_DESC(rds_poll_time, "RDS poll time (ms): *40*"); /************************************************************************** * Register Definitions **************************************************************************/ -#define FMRADIO_REGISTER_SIZE 2 /* 16 register bit width */ -#define FMRADIO_REGISTER_NUM 16 /* DEVICEID ... RDSD */ +#define RADIO_REGISTER_SIZE 2 /* 16 register bit width */ +#define RADIO_REGISTER_NUM 16 /* DEVICEID ... RDSD */ #define RDS_REGISTER_NUM 6 /* STATUSRSSI ... RDSD */ #define DEVICEID 0 /* Device ID */ @@ -236,23 +260,23 @@ MODULE_PARM_DESC(rds_poll_time, "RDS poll time (ms): *40*"); /************************************************************************** - * USB HID reports + * USB HID Reports **************************************************************************/ /* Reports 1-16 give direct read/write access to the 16 Si470x registers */ /* with the (REPORT_ID - 1) corresponding to the register address across USB */ /* endpoint 0 using GET_REPORT and SET_REPORT */ -#define REGISTER_REPORT_SIZE (FMRADIO_REGISTER_SIZE + 1) +#define REGISTER_REPORT_SIZE (RADIO_REGISTER_SIZE + 1) #define REGISTER_REPORT(reg) ((reg) + 1) /* Report 17 gives direct read/write access to the entire Si470x register */ /* map across endpoint 0 using GET_REPORT and SET_REPORT */ -#define ENTIRE_REPORT_SIZE (FMRADIO_REGISTER_NUM * FMRADIO_REGISTER_SIZE + 1) +#define ENTIRE_REPORT_SIZE (RADIO_REGISTER_NUM * RADIO_REGISTER_SIZE + 1) #define ENTIRE_REPORT 17 /* Report 18 is used to send the lowest 6 Si470x registers up the HID */ /* interrupt endpoint 1 to Windows every 20 milliseconds for status */ -#define RDS_REPORT_SIZE (RDS_REGISTER_NUM * FMRADIO_REGISTER_SIZE + 1) +#define RDS_REPORT_SIZE (RDS_REGISTER_NUM * RADIO_REGISTER_SIZE + 1) #define RDS_REPORT 18 /* Report 19: LED state */ @@ -281,12 +305,12 @@ MODULE_PARM_DESC(rds_poll_time, "RDS poll time (ms): *40*"); /************************************************************************** - * software/hardware versions + * Software/Hardware Versions **************************************************************************/ -#define FMRADIO_SW_VERSION_NOT_BOOTLOADABLE 6 -#define FMRADIO_SW_VERSION 7 -#define FMRADIO_SW_VERSION_CURRENT 15 -#define FMRADIO_HW_VERSION 1 +#define RADIO_SW_VERSION_NOT_BOOTLOADABLE 6 +#define RADIO_SW_VERSION 7 +#define RADIO_SW_VERSION_CURRENT 15 +#define RADIO_HW_VERSION 1 #define SCRATCH_PAGE_SW_VERSION 1 #define SCRATCH_PAGE_HW_VERSION 2 @@ -294,7 +318,7 @@ MODULE_PARM_DESC(rds_poll_time, "RDS poll time (ms): *40*"); /************************************************************************** - * LED State definitions + * LED State Definitions **************************************************************************/ #define LED_COMMAND 0x35 @@ -310,7 +334,7 @@ MODULE_PARM_DESC(rds_poll_time, "RDS poll time (ms): *40*"); /************************************************************************** - * Stream State definitions + * Stream State Definitions **************************************************************************/ #define STREAM_COMMAND 0x36 #define STREAM_VIDPID 0x00 @@ -319,16 +343,16 @@ MODULE_PARM_DESC(rds_poll_time, "RDS poll time (ms): *40*"); /************************************************************************** - * bootloader / flash commands + * Bootloader / Flash Commands **************************************************************************/ -/* Unique ID sent to bootloader and required to put into a bootload state */ +/* unique id sent to bootloader and required to put into a bootload state */ #define UNIQUE_BL_ID 0x34 -/* Mask for the flash data */ +/* mask for the flash data */ #define FLASH_DATA_MASK 0x55 -/* Bootloader commands */ +/* bootloader commands */ #define GET_SW_VERSION_COMMAND 0x00 #define SET_PAGE_COMMAND 0x01 #define ERASE_PAGE_COMMAND 0x02 @@ -339,12 +363,12 @@ MODULE_PARM_DESC(rds_poll_time, "RDS poll time (ms): *40*"); #define GET_HW_VERSION_COMMAND 0x07 #define BLANK 0xff -/* Bootloader command responses */ +/* bootloader command responses */ #define COMMAND_OK 0x01 #define COMMAND_FAILED 0x02 #define COMMAND_PENDING 0x03 -/* Buffer sizes */ +/* buffer sizes */ #define COMMAND_BUFFER_SIZE 4 #define RESPONSE_BUFFER_SIZE 2 #define FLASH_BUFFER_SIZE 64 @@ -353,10 +377,12 @@ MODULE_PARM_DESC(rds_poll_time, "RDS poll time (ms): *40*"); /************************************************************************** - * Driver private definitions + * General Driver Definitions **************************************************************************/ -/* private data */ +/* + * si470x_device - private data + */ struct si470x_device { /* reference to USB and video device */ struct usb_device *usbdev; @@ -369,12 +395,12 @@ struct si470x_device { unsigned char buf[64]; /* Silabs internal registers (0..15) */ - unsigned short registers[FMRADIO_REGISTER_NUM]; + unsigned short registers[RADIO_REGISTER_NUM]; /* RDS receive buffer */ struct work_struct work; struct timer_list timer; - spinlock_t lock; + spinlock_t lock; /* buffer locking */ unsigned char *buffer; unsigned int buf_size; unsigned int rd_index; @@ -385,177 +411,20 @@ struct si470x_device { int data_available_for_read; }; -/* register acccess functions */ -static int si470x_get_report(struct si470x_device *radio, int size); -static int si470x_set_report(struct si470x_device *radio, int size); -static int si470x_get_register(struct si470x_device *radio, int regnr); -static int si470x_set_register(struct si470x_device *radio, int regnr); -static int si470x_get_all_registers(struct si470x_device *radio); -static int si470x_get_rds_registers(struct si470x_device *radio); - -/* high-level functions */ -static int si470x_start(struct si470x_device *radio); -static int si470x_stop(struct si470x_device *radio); -static int si470x_set_chan(struct si470x_device *radio, int chan); -static int si470x_get_freq(struct si470x_device *radio); -static int si470x_set_freq(struct si470x_device *radio, int freq); - -/* RDS functions */ -static void si470x_rds(struct si470x_device *radio); -static void si470x_timer(unsigned long data); -static void si470x_work(struct work_struct *work); - - - -/************************************************************************** - * USB interface definitions - **************************************************************************/ - -/* USB device ID list (Vendor, Product, Class, SubClass, Protocol) */ -static struct usb_device_id si470x_usb_driver_id_table[] = { - /* Silicon Labs USB FM Radio Reference Design */ - { USB_DEVICE_AND_INTERFACE_INFO(0x10c4, 0x818a, USB_CLASS_HID, 0, 0) }, - /* Terminating entry */ - { } -}; -MODULE_DEVICE_TABLE (usb, si470x_usb_driver_id_table); - -/* USB driver functions */ -static int si470x_usb_driver_probe(struct usb_interface *intf, - const struct usb_device_id *id); -static void si470x_usb_driver_disconnect(struct usb_interface *intf); - -/* USB driver interface */ -static struct usb_driver si470x_usb_driver = { - .name = DRIVER_NAME, - .probe = si470x_usb_driver_probe, - .disconnect = si470x_usb_driver_disconnect, - .id_table = si470x_usb_driver_id_table, -}; - - -/************************************************************************** - * Video4Linux interface definitions - **************************************************************************/ - -/* The frequency is set in units of 62.5 Hz when using V4L2_TUNER_CAP_LOW, */ -/* 62.5 kHz otherwise. */ -/* The tuner is able to have a channel spacing of 50, 100 or 200 kHz. */ -/* tuner->capability is therefore set to V4L2_TUNER_CAP_LOW */ -/* The FREQ_MUL is then: 1 MHz / 62.5 Hz = 16000 */ +/* + * The frequency is set in units of 62.5 Hz when using V4L2_TUNER_CAP_LOW, + * 62.5 kHz otherwise. + * The tuner is able to have a channel spacing of 50, 100 or 200 kHz. + * tuner->capability is therefore set to V4L2_TUNER_CAP_LOW + * The FREQ_MUL is then: 1 MHz / 62.5 Hz = 16000 + */ #define FREQ_MUL (1000000 / 62.5) -/* File operations functions */ -static ssize_t si470x_fops_read(struct file *file, char __user *buf, - size_t count, loff_t *ppos); -static unsigned int si470x_fops_poll(struct file *file, - struct poll_table_struct *pts); -static int si470x_fops_open(struct inode *inode, struct file *file); -static int si470x_fops_release(struct inode *inode, struct file *file); - -/* File operations interface */ -static const struct file_operations si470x_fops = { - .owner = THIS_MODULE, - .llseek = no_llseek, - .read = si470x_fops_read, - .poll = si470x_fops_poll, - .ioctl = video_ioctl2, - .compat_ioctl = v4l_compat_ioctl32, - .open = si470x_fops_open, - .release = si470x_fops_release, -}; - -/* Video device functions */ -static int si470x_vidioc_querycap(struct file *file, void *priv, - struct v4l2_capability *capability); -static int si470x_vidioc_g_input(struct file *file, void *priv, - unsigned int *i); -static int si470x_vidioc_s_input(struct file *file, void *priv, - unsigned int i); -static int si470x_vidioc_queryctrl(struct file *file, void *priv, - struct v4l2_queryctrl *qc); -static int si470x_vidioc_g_ctrl(struct file *file, void *priv, - struct v4l2_control *ctrl); -static int si470x_vidioc_s_ctrl(struct file *file, void *priv, - struct v4l2_control *ctrl); -static int si470x_vidioc_g_audio(struct file *file, void *priv, - struct v4l2_audio *audio); -static int si470x_vidioc_s_audio(struct file *file, void *priv, - struct v4l2_audio *audio); -static int si470x_vidioc_g_tuner(struct file *file, void *priv, - struct v4l2_tuner *tuner); -static int si470x_vidioc_s_tuner(struct file *file, void *priv, - struct v4l2_tuner *tuner); -static int si470x_vidioc_g_frequency(struct file *file, void *priv, - struct v4l2_frequency *freq); -static int si470x_vidioc_s_frequency(struct file *file, void *priv, - struct v4l2_frequency *freq); - -/* Video device interface */ -static struct video_device si470x_viddev_template = { - .fops = &si470x_fops, - .name = DRIVER_NAME, - .type = VID_TYPE_TUNER, - .release = video_device_release, - .vidioc_querycap = si470x_vidioc_querycap, - .vidioc_g_input = si470x_vidioc_g_input, - .vidioc_s_input = si470x_vidioc_s_input, - .vidioc_queryctrl = si470x_vidioc_queryctrl, - .vidioc_g_ctrl = si470x_vidioc_g_ctrl, - .vidioc_s_ctrl = si470x_vidioc_s_ctrl, - .vidioc_g_audio = si470x_vidioc_g_audio, - .vidioc_s_audio = si470x_vidioc_s_audio, - .vidioc_g_tuner = si470x_vidioc_g_tuner, - .vidioc_s_tuner = si470x_vidioc_s_tuner, - .vidioc_g_frequency = si470x_vidioc_g_frequency, - .vidioc_s_frequency = si470x_vidioc_s_frequency, - .owner = THIS_MODULE, -}; - -/* Query control */ -static struct v4l2_queryctrl radio_queryctrl[] = { -/* HINT: the disabled controls are only here to satify kradio and such apps */ - { - .id = V4L2_CID_AUDIO_VOLUME, - .type = V4L2_CTRL_TYPE_INTEGER, - .name = "Volume", - .minimum = 0, - .maximum = 15, - .step = 1, - .default_value = 15, - }, - { - .id = V4L2_CID_AUDIO_BALANCE, - .flags = V4L2_CTRL_FLAG_DISABLED, - }, - { - .id = V4L2_CID_AUDIO_BASS, - .flags = V4L2_CTRL_FLAG_DISABLED, - }, - { - .id = V4L2_CID_AUDIO_TREBLE, - .flags = V4L2_CTRL_FLAG_DISABLED, - }, - { - .id = V4L2_CID_AUDIO_MUTE, - .type = V4L2_CTRL_TYPE_BOOLEAN, - .name = "Mute", - .minimum = 0, - .maximum = 1, - .step = 1, - .default_value = 1, - }, - { - .id = V4L2_CID_AUDIO_LOUDNESS, - .flags = V4L2_CTRL_FLAG_DISABLED, - }, -}; - /************************************************************************** - * Driver private functions + * General Driver Functions **************************************************************************/ /* @@ -633,10 +502,10 @@ static int si470x_get_all_registers(struct si470x_device *radio) retval = si470x_get_report(radio, ENTIRE_REPORT_SIZE); if (retval >= 0) - for (regnr = 0; regnr < FMRADIO_REGISTER_NUM; regnr++) + for (regnr = 0; regnr < RADIO_REGISTER_NUM; regnr++) radio->registers[regnr] = - (radio->buf[regnr * FMRADIO_REGISTER_SIZE + 1] << 8) | - radio->buf[regnr * FMRADIO_REGISTER_SIZE + 2]; + (radio->buf[regnr * RADIO_REGISTER_SIZE + 1] << 8) | + radio->buf[regnr * RADIO_REGISTER_SIZE + 2]; return (retval < 0) ? -EINVAL : 0; } @@ -657,65 +526,13 @@ static int si470x_get_rds_registers(struct si470x_device *radio) usb_rcvctrlpipe(radio->usbdev, 1), radio->buf, RDS_REPORT_SIZE, &size, usb_timeout); - if (retval >= 0) { - for (regnr = 0; regnr < RDS_REGISTER_NUM; regnr++) { + if (retval >= 0) + for (regnr = 0; regnr < RDS_REGISTER_NUM; regnr++) radio->registers[STATUSRSSI + regnr] = - (radio->buf[regnr * FMRADIO_REGISTER_SIZE + 1] << 8) | - radio->buf[regnr * FMRADIO_REGISTER_SIZE + 2]; - } - } - - return (retval < 0) ? - EINVAL : 0; -} - + (radio->buf[regnr * RADIO_REGISTER_SIZE + 1] << 8) | + radio->buf[regnr * RADIO_REGISTER_SIZE + 2]; -/* - * si470x_start - switch on radio - */ -static int si470x_start(struct si470x_device *radio) -{ - int retval; - - /* powercfg */ - radio->registers[POWERCFG] = - POWERCFG_DMUTE | POWERCFG_ENABLE | POWERCFG_RDSM; - retval = si470x_set_register(radio, POWERCFG); - if (retval < 0) - return retval; - - /* sysconfig 1 */ - radio->registers[SYSCONFIG1] = - SYSCONFIG1_DE | SYSCONFIG1_RDS; - retval = si470x_set_register(radio, SYSCONFIG1); - if (retval < 0) - return retval; - - /* sysconfig 2 */ - radio->registers[SYSCONFIG2] = - (0x3f << 8) | /* SEEKTH */ - (band << 6) | /* BAND */ - (space << 4) | /* SPACE */ - 15; /* VOLUME (max) */ - retval = si470x_set_register(radio, SYSCONFIG2); - if (retval < 0) - return retval; - - /* reset last channel */ - return si470x_set_chan(radio, - radio->registers[CHANNEL] & CHANNEL_CHAN); -} - - -/* - * si470x_stop - switch off radio - */ -static int si470x_stop(struct si470x_device *radio) -{ - /* powercfg */ - radio->registers[POWERCFG] &= ~POWERCFG_DMUTE; - /* POWERCFG_ENABLE has to automatically go low */ - radio->registers[POWERCFG] |= POWERCFG_ENABLE | POWERCFG_DISABLE; - return si470x_set_register(radio, POWERCFG); + return (retval < 0) ? -EINVAL : 0; } @@ -761,22 +578,22 @@ static int si470x_get_freq(struct si470x_device *radio) /* Spacing (kHz) */ switch (space) { - /* 0: 200 kHz (USA, Australia) */ - default: spacing = 0.200 * FREQ_MUL; break; - /* 1: 100 kHz (Europe, Japan) */ - case 1 : spacing = 0.100 * FREQ_MUL; break; - /* 2: 50 kHz */ - case 2 : spacing = 0.050 * FREQ_MUL; break; + /* 0: 200 kHz (USA, Australia) */ + case 0 : spacing = 0.200 * FREQ_MUL; break; + /* 1: 100 kHz (Europe, Japan) */ + case 1 : spacing = 0.100 * FREQ_MUL; break; + /* 2: 50 kHz */ + default: spacing = 0.050 * FREQ_MUL; break; }; /* Bottom of Band (MHz) */ switch (band) { - /* 0: 87.5 - 108 MHz (USA, Europe) */ - default: band_bottom = 87.5 * FREQ_MUL; break; - /* 1: 76 - 108 MHz (Japan wide band) */ - case 1 : band_bottom = 76 * FREQ_MUL; break; - /* 2: 76 - 90 MHz (Japan) */ - case 2 : band_bottom = 76 * FREQ_MUL; break; + /* 0: 87.5 - 108 MHz (USA, Europe) */ + case 0 : band_bottom = 87.5 * FREQ_MUL; break; + /* 1: 76 - 108 MHz (Japan wide band) */ + default: band_bottom = 76 * FREQ_MUL; break; + /* 2: 76 - 90 MHz (Japan) */ + case 2 : band_bottom = 76 * FREQ_MUL; break; }; /* read channel */ @@ -801,22 +618,22 @@ static int si470x_set_freq(struct si470x_device *radio, int freq) /* Spacing (kHz) */ switch (space) { - /* 0: 200 kHz (USA, Australia) */ - default: spacing = 0.200 * FREQ_MUL; break; - /* 1: 100 kHz (Europe, Japan) */ - case 1 : spacing = 0.100 * FREQ_MUL; break; - /* 2: 50 kHz */ - case 2 : spacing = 0.050 * FREQ_MUL; break; + /* 0: 200 kHz (USA, Australia) */ + case 0 : spacing = 0.200 * FREQ_MUL; break; + /* 1: 100 kHz (Europe, Japan) */ + case 1 : spacing = 0.100 * FREQ_MUL; break; + /* 2: 50 kHz */ + default: spacing = 0.050 * FREQ_MUL; break; }; /* Bottom of Band (MHz) */ switch (band) { - /* 0: 87.5 - 108 MHz (USA, Europe) */ - default: band_bottom = 87.5 * FREQ_MUL; break; - /* 1: 76 - 108 MHz (Japan wide band) */ - case 1 : band_bottom = 76 * FREQ_MUL; break; - /* 2: 76 - 90 MHz (Japan) */ - case 2 : band_bottom = 76 * FREQ_MUL; break; + /* 0: 87.5 - 108 MHz (USA, Europe) */ + case 0 : band_bottom = 87.5 * FREQ_MUL; break; + /* 1: 76 - 108 MHz (Japan wide band) */ + default: band_bottom = 76 * FREQ_MUL; break; + /* 2: 76 - 90 MHz (Japan) */ + case 2 : band_bottom = 76 * FREQ_MUL; break; }; /* Chan = [ Freq (Mhz) - Bottom of Band (MHz) ] / Spacing (kHz) */ @@ -826,6 +643,60 @@ static int si470x_set_freq(struct si470x_device *radio, int freq) } +/* + * si470x_start - switch on radio + */ +static int si470x_start(struct si470x_device *radio) +{ + int retval; + + /* powercfg */ + radio->registers[POWERCFG] = + POWERCFG_DMUTE | POWERCFG_ENABLE | POWERCFG_RDSM; + retval = si470x_set_register(radio, POWERCFG); + if (retval < 0) + return retval; + + /* sysconfig 1 */ + radio->registers[SYSCONFIG1] = + SYSCONFIG1_DE | SYSCONFIG1_RDS; + retval = si470x_set_register(radio, SYSCONFIG1); + if (retval < 0) + return retval; + + /* sysconfig 2 */ + radio->registers[SYSCONFIG2] = + (0x3f << 8) | /* SEEKTH */ + (band << 6) | /* BAND */ + (space << 4) | /* SPACE */ + 15; /* VOLUME (max) */ + retval = si470x_set_register(radio, SYSCONFIG2); + if (retval < 0) + return retval; + + /* reset last channel */ + return si470x_set_chan(radio, + radio->registers[CHANNEL] & CHANNEL_CHAN); +} + + +/* + * si470x_stop - switch off radio + */ +static int si470x_stop(struct si470x_device *radio) +{ + /* powercfg */ + radio->registers[POWERCFG] &= ~POWERCFG_DMUTE; + /* POWERCFG_ENABLE has to automatically go low */ + radio->registers[POWERCFG] |= POWERCFG_ENABLE | POWERCFG_DISABLE; + return si470x_set_register(radio, POWERCFG); +} + + + +/************************************************************************** + * RDS Driver Functions + **************************************************************************/ /* * si470x_rds - rds processing function @@ -854,26 +725,26 @@ static void si470x_rds(struct si470x_device *radio) for (blocknum = 0; blocknum < 4; blocknum++) { switch (blocknum) { - default: - bler = (radio->registers[STATUSRSSI] & - STATUSRSSI_BLERA) >> 9; - rds = radio->registers[RDSA]; - break; - case 1: - bler = (radio->registers[READCHAN] & - READCHAN_BLERB) >> 14; - rds = radio->registers[RDSB]; - break; - case 2: - bler = (radio->registers[READCHAN] & - READCHAN_BLERC) >> 12; - rds = radio->registers[RDSC]; - break; - case 3: - bler = (radio->registers[READCHAN] & - READCHAN_BLERD) >> 10; - rds = radio->registers[RDSD]; - break; + default: + bler = (radio->registers[STATUSRSSI] & + STATUSRSSI_BLERA) >> 9; + rds = radio->registers[RDSA]; + break; + case 1: + bler = (radio->registers[READCHAN] & + READCHAN_BLERB) >> 14; + rds = radio->registers[RDSB]; + break; + case 2: + bler = (radio->registers[READCHAN] & + READCHAN_BLERC) >> 12; + rds = radio->registers[RDSC]; + break; + case 3: + bler = (radio->registers[READCHAN] & + READCHAN_BLERD) >> 10; + rds = radio->registers[RDSD]; + break; }; /* Fill the V4L2 RDS buffer */ @@ -941,107 +812,7 @@ static void si470x_work(struct work_struct *work) /************************************************************************** - * USB interface functions - **************************************************************************/ - -/* - * si470x_usb_driver_probe - probe for the device - */ -static int si470x_usb_driver_probe(struct usb_interface *intf, - const struct usb_device_id *id) -{ - struct si470x_device *radio; - - if (!(radio = kmalloc(sizeof(struct si470x_device), GFP_KERNEL))) - return -ENOMEM; - if (!(radio->videodev = video_device_alloc())) { - kfree(radio); - return -ENOMEM; - } - memcpy(radio->videodev, &si470x_viddev_template, - sizeof(si470x_viddev_template)); - radio->users = 0; - radio->usbdev = interface_to_usbdev(intf); - video_set_drvdata(radio->videodev, radio); - if (video_register_device(radio->videodev, VFL_TYPE_RADIO, radio_nr)) { - printk(KERN_WARNING DRIVER_NAME - ": Could not register video device\n"); - video_device_release(radio->videodev); - kfree(radio); - return -EIO; - } - usb_set_intfdata(intf, radio); - - /* show some infos about the specific device */ - if (si470x_get_all_registers(radio) < 0) { - video_device_release(radio->videodev); - kfree(radio); - return -EIO; - } - printk(KERN_INFO DRIVER_NAME ": DeviceID=0x%4.4x ChipID=0x%4.4x\n", - radio->registers[DEVICEID], radio->registers[CHIPID]); - - /* check if firmware is current */ - if ((radio->registers[CHIPID] & CHIPID_FIRMWARE) - < FMRADIO_SW_VERSION_CURRENT) { - printk(KERN_WARNING DRIVER_NAME - ": This driver is known to work with chip version %d, " - "but the device has firmware %d. If you have some " - "trouble using this driver, please report to V4L ML " - "at video4linux-list@redhat.com\n", - radio->registers[CHIPID] & CHIPID_FIRMWARE, - FMRADIO_SW_VERSION_CURRENT); - } - - /* set initial frequency */ - si470x_set_freq(radio, 87.5 * FREQ_MUL); /* available in all regions */ - - /* rds initialization */ - radio->buf_size = rds_buf * 3; - if (NULL == (radio->buffer = kmalloc(radio->buf_size, GFP_KERNEL))) { - video_device_release(radio->videodev); - kfree(radio); - return -ENOMEM; - } - radio->block_count = 0; - radio->wr_index = 0; - radio->rd_index = 0; - radio->last_blocknum = 0xff; - init_waitqueue_head(&radio->read_queue); - radio->data_available_for_read = 0; - - /* prepare polling via eventd */ - INIT_WORK(&radio->work, si470x_work); - init_timer(&radio->timer); - radio->timer.function = si470x_timer; - radio->timer.data = (unsigned long) radio; - - return 0; -} - - -/* - * si470x_usb_driver_disconnect - disconnect the device - */ -static void si470x_usb_driver_disconnect(struct usb_interface *intf) -{ - struct si470x_device *radio = usb_get_intfdata(intf); - - del_timer_sync(&radio->timer); - flush_scheduled_work(); - - usb_set_intfdata(intf, NULL); - if (radio) { - video_unregister_device(radio->videodev); - kfree(radio->buffer); - kfree(radio); - } -} - - - -/************************************************************************** - * Video4Linux interface functions + * File Operations Interface **************************************************************************/ /* @@ -1166,6 +937,68 @@ static int si470x_fops_release(struct inode *inode, struct file *file) /* + * si470x_fops - file operations interface + */ +static const struct file_operations si470x_fops = { + .owner = THIS_MODULE, + .llseek = no_llseek, + .read = si470x_fops_read, + .poll = si470x_fops_poll, + .ioctl = video_ioctl2, + .compat_ioctl = v4l_compat_ioctl32, + .open = si470x_fops_open, + .release = si470x_fops_release, +}; + + + +/************************************************************************** + * Video4Linux Interface + **************************************************************************/ + +/* + * si470x_v4l2_queryctrl - query control + */ +static struct v4l2_queryctrl si470x_v4l2_queryctrl[] = { +/* HINT: the disabled controls are only here to satify kradio and such apps */ + { + .id = V4L2_CID_AUDIO_VOLUME, + .type = V4L2_CTRL_TYPE_INTEGER, + .name = "Volume", + .minimum = 0, + .maximum = 15, + .step = 1, + .default_value = 15, + }, + { + .id = V4L2_CID_AUDIO_BALANCE, + .flags = V4L2_CTRL_FLAG_DISABLED, + }, + { + .id = V4L2_CID_AUDIO_BASS, + .flags = V4L2_CTRL_FLAG_DISABLED, + }, + { + .id = V4L2_CID_AUDIO_TREBLE, + .flags = V4L2_CTRL_FLAG_DISABLED, + }, + { + .id = V4L2_CID_AUDIO_MUTE, + .type = V4L2_CTRL_TYPE_BOOLEAN, + .name = "Mute", + .minimum = 0, + .maximum = 1, + .step = 1, + .default_value = 1, + }, + { + .id = V4L2_CID_AUDIO_LOUDNESS, + .flags = V4L2_CTRL_FLAG_DISABLED, + }, +}; + + +/* * si470x_vidioc_querycap - query device capabilities */ static int si470x_vidioc_querycap(struct file *file, void *priv, @@ -1213,9 +1046,9 @@ static int si470x_vidioc_queryctrl(struct file *file, void *priv, { int i; - for (i = 0; i < ARRAY_SIZE(radio_queryctrl); i++) { - if (qc->id && qc->id == radio_queryctrl[i].id) { - memcpy(qc, &(radio_queryctrl[i]), sizeof(*qc)); + for (i = 0; i < ARRAY_SIZE(si470x_v4l2_queryctrl); i++) { + if (qc->id && qc->id == si470x_v4l2_queryctrl[i].id) { + memcpy(qc, &(si470x_v4l2_queryctrl[i]), sizeof(*qc)); return 0; } } @@ -1233,14 +1066,14 @@ static int si470x_vidioc_g_ctrl(struct file *file, void *priv, struct si470x_device *radio = video_get_drvdata(video_devdata(file)); switch (ctrl->id) { - case V4L2_CID_AUDIO_VOLUME: - ctrl->value = radio->registers[SYSCONFIG2] & - SYSCONFIG2_VOLUME; - break; - case V4L2_CID_AUDIO_MUTE: - ctrl->value = ((radio->registers[POWERCFG] & - POWERCFG_DMUTE) == 0) ? 1 : 0; - break; + case V4L2_CID_AUDIO_VOLUME: + ctrl->value = radio->registers[SYSCONFIG2] & + SYSCONFIG2_VOLUME; + break; + case V4L2_CID_AUDIO_MUTE: + ctrl->value = ((radio->registers[POWERCFG] & + POWERCFG_DMUTE) == 0) ? 1 : 0; + break; } return 0; @@ -1256,16 +1089,16 @@ static int si470x_vidioc_s_ctrl(struct file *file, void *priv, struct si470x_device *radio = video_get_drvdata(video_devdata(file)); switch (ctrl->id) { - case V4L2_CID_AUDIO_VOLUME: - radio->registers[SYSCONFIG2] &= ~SYSCONFIG2_VOLUME; - radio->registers[SYSCONFIG2] |= ctrl->value; - return si470x_set_register(radio, SYSCONFIG2); - case V4L2_CID_AUDIO_MUTE: - if (ctrl->value == 1) - radio->registers[POWERCFG] &= ~POWERCFG_DMUTE; - else - radio->registers[POWERCFG] |= POWERCFG_DMUTE; - return si470x_set_register(radio, POWERCFG); + case V4L2_CID_AUDIO_VOLUME: + radio->registers[SYSCONFIG2] &= ~SYSCONFIG2_VOLUME; + radio->registers[SYSCONFIG2] |= ctrl->value; + return si470x_set_register(radio, SYSCONFIG2); + case V4L2_CID_AUDIO_MUTE: + if (ctrl->value == 1) + radio->registers[POWERCFG] &= ~POWERCFG_DMUTE; + else + radio->registers[POWERCFG] |= POWERCFG_DMUTE; + return si470x_set_register(radio, POWERCFG); } return -EINVAL; @@ -1320,22 +1153,22 @@ static int si470x_vidioc_g_tuner(struct file *file, void *priv, strcpy(tuner->name, "FM"); tuner->type = V4L2_TUNER_RADIO; - switch(band) { - /* 0: 87.5 - 108 MHz (USA, Europe, default) */ - default: - tuner->rangelow = 87.5 * FREQ_MUL; - tuner->rangehigh = 108 * FREQ_MUL; - break; - /* 1: 76 - 108 MHz (Japan wide band) */ - case 1 : - tuner->rangelow = 76 * FREQ_MUL; - tuner->rangehigh = 108 * FREQ_MUL; - break; - /* 2: 76 - 90 MHz (Japan) */ - case 2 : - tuner->rangelow = 76 * FREQ_MUL; - tuner->rangehigh = 90 * FREQ_MUL; - break; + switch (band) { + /* 0: 87.5 - 108 MHz (USA, Europe, default) */ + default: + tuner->rangelow = 87.5 * FREQ_MUL; + tuner->rangehigh = 108 * FREQ_MUL; + break; + /* 1: 76 - 108 MHz (Japan wide band) */ + case 1 : + tuner->rangelow = 76 * FREQ_MUL; + tuner->rangehigh = 108 * FREQ_MUL; + break; + /* 2: 76 - 90 MHz (Japan) */ + case 2 : + tuner->rangelow = 76 * FREQ_MUL; + tuner->rangehigh = 90 * FREQ_MUL; + break; }; tuner->rxsubchans = V4L2_TUNER_SUB_MONO | V4L2_TUNER_SUB_STEREO; tuner->capability = V4L2_TUNER_CAP_LOW; @@ -1407,9 +1240,147 @@ static int si470x_vidioc_s_frequency(struct file *file, void *priv, } +/* + * si470x_viddev_tamples - video device interface + */ +static struct video_device si470x_viddev_template = { + .fops = &si470x_fops, + .name = DRIVER_NAME, + .type = VID_TYPE_TUNER, + .release = video_device_release, + .vidioc_querycap = si470x_vidioc_querycap, + .vidioc_g_input = si470x_vidioc_g_input, + .vidioc_s_input = si470x_vidioc_s_input, + .vidioc_queryctrl = si470x_vidioc_queryctrl, + .vidioc_g_ctrl = si470x_vidioc_g_ctrl, + .vidioc_s_ctrl = si470x_vidioc_s_ctrl, + .vidioc_g_audio = si470x_vidioc_g_audio, + .vidioc_s_audio = si470x_vidioc_s_audio, + .vidioc_g_tuner = si470x_vidioc_g_tuner, + .vidioc_s_tuner = si470x_vidioc_s_tuner, + .vidioc_g_frequency = si470x_vidioc_g_frequency, + .vidioc_s_frequency = si470x_vidioc_s_frequency, + .owner = THIS_MODULE, +}; + + + +/************************************************************************** + * USB Interface + **************************************************************************/ + +/* + * si470x_usb_driver_probe - probe for the device + */ +static int si470x_usb_driver_probe(struct usb_interface *intf, + const struct usb_device_id *id) +{ + struct si470x_device *radio; + + /* memory and interface allocations */ + radio = kmalloc(sizeof(struct si470x_device), GFP_KERNEL); + if (!radio) + return -ENOMEM; + radio->videodev = video_device_alloc(); + if (!radio->videodev) { + kfree(radio); + return -ENOMEM; + } + memcpy(radio->videodev, &si470x_viddev_template, + sizeof(si470x_viddev_template)); + radio->users = 0; + radio->usbdev = interface_to_usbdev(intf); + video_set_drvdata(radio->videodev, radio); + if (video_register_device(radio->videodev, VFL_TYPE_RADIO, radio_nr)) { + printk(KERN_WARNING DRIVER_NAME + ": Could not register video device\n"); + video_device_release(radio->videodev); + kfree(radio); + return -EIO; + } + usb_set_intfdata(intf, radio); + + /* show some infos about the specific device */ + if (si470x_get_all_registers(radio) < 0) { + video_device_release(radio->videodev); + kfree(radio); + return -EIO; + } + printk(KERN_INFO DRIVER_NAME ": DeviceID=0x%4.4x ChipID=0x%4.4x\n", + radio->registers[DEVICEID], radio->registers[CHIPID]); + + /* check if firmware is current */ + if ((radio->registers[CHIPID] & CHIPID_FIRMWARE) + < RADIO_SW_VERSION_CURRENT) + printk(KERN_WARNING DRIVER_NAME + ": This driver is known to work with chip version %d, " + "but the device has firmware %d. If you have some " + "trouble using this driver, please report to V4L ML " + "at video4linux-list@redhat.com\n", + radio->registers[CHIPID] & CHIPID_FIRMWARE, + RADIO_SW_VERSION_CURRENT); + + /* set initial frequency */ + si470x_set_freq(radio, 87.5 * FREQ_MUL); /* available in all regions */ + + /* rds initialization */ + radio->buf_size = rds_buf * 3; + radio->buffer = kmalloc(radio->buf_size, GFP_KERNEL); + if (!radio->buffer) { + video_device_release(radio->videodev); + kfree(radio); + return -ENOMEM; + } + radio->block_count = 0; + radio->wr_index = 0; + radio->rd_index = 0; + radio->last_blocknum = 0xff; + init_waitqueue_head(&radio->read_queue); + radio->data_available_for_read = 0; + + /* prepare polling via eventd */ + INIT_WORK(&radio->work, si470x_work); + init_timer(&radio->timer); + radio->timer.function = si470x_timer; + radio->timer.data = (unsigned long) radio; + + return 0; +} + + +/* + * si470x_usb_driver_disconnect - disconnect the device + */ +static void si470x_usb_driver_disconnect(struct usb_interface *intf) +{ + struct si470x_device *radio = usb_get_intfdata(intf); + + del_timer_sync(&radio->timer); + flush_scheduled_work(); + + usb_set_intfdata(intf, NULL); + if (radio) { + video_unregister_device(radio->videodev); + kfree(radio->buffer); + kfree(radio); + } +} + + +/* + * si470x_usb_driver - usb driver interface + */ +static struct usb_driver si470x_usb_driver = { + .name = DRIVER_NAME, + .probe = si470x_usb_driver_probe, + .disconnect = si470x_usb_driver_disconnect, + .id_table = si470x_usb_driver_id_table, +}; + + /************************************************************************** - * Module interface definitions and functions + * Module Interface **************************************************************************/ /* @@ -1437,4 +1408,4 @@ module_exit(si470x_module_exit); MODULE_LICENSE("GPL"); MODULE_AUTHOR(DRIVER_AUTHOR); MODULE_DESCRIPTION(DRIVER_DESC); -MODULE_VERSION("1.0.2"); +MODULE_VERSION("1.0.3"); |
