diff options
Diffstat (limited to 'drivers/media/radio')
| -rw-r--r-- | drivers/media/radio/Kconfig | 59 | ||||
| -rw-r--r-- | drivers/media/radio/Makefile | 4 | ||||
| -rw-r--r-- | drivers/media/radio/radio-cadet.c | 6 | ||||
| -rw-r--r-- | drivers/media/radio/radio-si470x.c | 1863 | ||||
| -rw-r--r-- | drivers/media/radio/radio-si4713.c | 367 | ||||
| -rw-r--r-- | drivers/media/radio/si470x/Kconfig | 37 | ||||
| -rw-r--r-- | drivers/media/radio/si470x/Makefile | 9 | ||||
| -rw-r--r-- | drivers/media/radio/si470x/radio-si470x-common.c | 798 | ||||
| -rw-r--r-- | drivers/media/radio/si470x/radio-si470x-i2c.c | 401 | ||||
| -rw-r--r-- | drivers/media/radio/si470x/radio-si470x-usb.c | 988 | ||||
| -rw-r--r-- | drivers/media/radio/si470x/radio-si470x.h | 225 | ||||
| -rw-r--r-- | drivers/media/radio/si4713-i2c.c | 2060 | ||||
| -rw-r--r-- | drivers/media/radio/si4713-i2c.h | 237 |
13 files changed, 5156 insertions, 1898 deletions
diff --git a/drivers/media/radio/Kconfig b/drivers/media/radio/Kconfig index 3315cac875e..25a36ad60c5 100644 --- a/drivers/media/radio/Kconfig +++ b/drivers/media/radio/Kconfig @@ -288,16 +288,6 @@ config RADIO_TYPHOON To compile this driver as a module, choose M here: the module will be called radio-typhoon. -config RADIO_TYPHOON_PROC_FS - bool "Support for /proc/radio-typhoon" - depends on PROC_FS && RADIO_TYPHOON - help - Say Y here if you want the typhoon radio card driver to write - status information (frequency, volume, muted, mute frequency, - base address) to /proc/radio-typhoon. The file can be viewed with - your favorite pager (i.e. use "more /proc/radio-typhoon" or "less - /proc/radio-typhoon" or simply "cat /proc/radio-typhoon"). - config RADIO_TYPHOON_PORT hex "Typhoon I/O port (0x316 or 0x336)" depends on RADIO_TYPHOON=y @@ -339,6 +329,29 @@ config RADIO_ZOLTRIX_PORT help Enter the I/O port of your Zoltrix radio card. +config I2C_SI4713 + tristate "I2C driver for Silicon Labs Si4713 device" + depends on I2C && VIDEO_V4L2 + ---help--- + Say Y here if you want support to Si4713 I2C device. + This device driver supports only i2c bus. + + To compile this driver as a module, choose M here: the + module will be called si4713. + +config RADIO_SI4713 + tristate "Silicon Labs Si4713 FM Radio Transmitter support" + depends on I2C && VIDEO_V4L2 + select I2C_SI4713 + ---help--- + Say Y here if you want support to Si4713 FM Radio Transmitter. + This device can transmit audio through FM. It can transmit + EDS and EBDS signals as well. This module is the v4l2 radio + interface for the i2c driver of this device. + + To compile this driver as a module, choose M here: the + module will be called radio-si4713. + config USB_DSBR tristate "D-Link/GemTek USB FM radio support" depends on USB && VIDEO_V4L2 @@ -351,29 +364,11 @@ config USB_DSBR To compile this driver as a module, choose M here: the module will be called dsbr100. -config USB_SI470X - tristate "Silicon Labs Si470x FM Radio Receiver support" - depends on USB && VIDEO_V4L2 - ---help--- - This is a driver for USB devices with the Silicon Labs SI470x - chip. Currently these devices are known to work: - - 10c4:818a: Silicon Labs USB FM Radio Reference Design - - 06e1:a155: ADS/Tech FM Radio Receiver (formerly Instant FM Music) - - 1b80:d700: KWorld USB FM Radio SnapMusic Mobile 700 (FM700) - - Sound is provided by the ALSA USB Audio/MIDI driver. Therefore - if you don't want to use the device solely for RDS receiving, - it is recommended to also select SND_USB_AUDIO. - - Please have a look at the documentation, especially on how - to redirect the audio stream from the radio to your sound device: - Documentation/video4linux/si470x.txt - - Say Y here if you want to connect this type of radio to your - computer's USB port. +config RADIO_SI470X + bool "Silicon Labs Si470x FM Radio Receiver support" + depends on VIDEO_V4L2 - To compile this driver as a module, choose M here: the - module will be called radio-si470x. +source "drivers/media/radio/si470x/Kconfig" config USB_MR800 tristate "AverMedia MR 800 USB FM radio support" diff --git a/drivers/media/radio/Makefile b/drivers/media/radio/Makefile index 0f2b35b3e56..2a1be3bf4f7 100644 --- a/drivers/media/radio/Makefile +++ b/drivers/media/radio/Makefile @@ -15,9 +15,11 @@ obj-$(CONFIG_RADIO_ZOLTRIX) += radio-zoltrix.o obj-$(CONFIG_RADIO_GEMTEK) += radio-gemtek.o obj-$(CONFIG_RADIO_GEMTEK_PCI) += radio-gemtek-pci.o obj-$(CONFIG_RADIO_TRUST) += radio-trust.o +obj-$(CONFIG_I2C_SI4713) += si4713-i2c.o +obj-$(CONFIG_RADIO_SI4713) += radio-si4713.o obj-$(CONFIG_RADIO_MAESTRO) += radio-maestro.o obj-$(CONFIG_USB_DSBR) += dsbr100.o -obj-$(CONFIG_USB_SI470X) += radio-si470x.o +obj-$(CONFIG_RADIO_SI470X) += si470x/ obj-$(CONFIG_USB_MR800) += radio-mr800.o obj-$(CONFIG_RADIO_TEA5764) += radio-tea5764.o diff --git a/drivers/media/radio/radio-cadet.c b/drivers/media/radio/radio-cadet.c index d30fc0ce82c..8b1440136c4 100644 --- a/drivers/media/radio/radio-cadet.c +++ b/drivers/media/radio/radio-cadet.c @@ -359,7 +359,8 @@ static int vidioc_querycap(struct file *file, void *priv, strlcpy(v->card, "ADS Cadet", sizeof(v->card)); strlcpy(v->bus_info, "ISA", sizeof(v->bus_info)); v->version = CADET_VERSION; - v->capabilities = V4L2_CAP_TUNER | V4L2_CAP_RADIO | V4L2_CAP_READWRITE; + v->capabilities = V4L2_CAP_TUNER | V4L2_CAP_RADIO | + V4L2_CAP_READWRITE | V4L2_CAP_RDS_CAPTURE; return 0; } @@ -372,7 +373,7 @@ static int vidioc_g_tuner(struct file *file, void *priv, switch (v->index) { case 0: strlcpy(v->name, "FM", sizeof(v->name)); - v->capability = V4L2_TUNER_CAP_STEREO; + v->capability = V4L2_TUNER_CAP_STEREO | V4L2_TUNER_CAP_RDS; v->rangelow = 1400; /* 87.5 MHz */ v->rangehigh = 1728; /* 108.0 MHz */ v->rxsubchans = cadet_getstereo(dev); @@ -386,6 +387,7 @@ static int vidioc_g_tuner(struct file *file, void *priv, default: break; } + v->rxsubchans |= V4L2_TUNER_SUB_RDS; break; case 1: strlcpy(v->name, "AM", sizeof(v->name)); diff --git a/drivers/media/radio/radio-si470x.c b/drivers/media/radio/radio-si470x.c deleted file mode 100644 index e85f318b4d2..00000000000 --- a/drivers/media/radio/radio-si470x.c +++ /dev/null @@ -1,1863 +0,0 @@ -/* - * drivers/media/radio/radio-si470x.c - * - * Driver for USB radios for the Silicon Labs Si470x FM Radio Receivers: - * - Silicon Labs USB FM Radio Reference Design - * - ADS/Tech FM Radio Receiver (formerly Instant FM Music) (RDX-155-EF) - * - KWorld USB FM Radio SnapMusic Mobile 700 (FM700) - * - Sanei Electric, Inc. FM USB Radio (sold as DealExtreme.com PCear) - * - * Copyright (c) 2009 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 - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * 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 - */ - - -/* - * History: - * 2008-01-12 Tobias Lorenz <tobias.lorenz@gmx.net> - * Version 1.0.0 - * - First working version - * 2008-01-13 Tobias Lorenz <tobias.lorenz@gmx.net> - * 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 - * - RDS support added (polling mode via interrupt EP 1) - * - marked default module parameters with *value* - * - switched from bit structs to bit masks - * - header file cleaned and integrated - * 2008-01-14 Tobias Lorenz <tobias.lorenz@gmx.net> - * Version 1.0.2 - * - hex values are now lower case - * - commented USB ID for ADS/Tech moved on todo list - * - blacklisted si470x in hid-quirks.c - * - rds buffer handling functions integrated into *_work, *_read - * - rds_command in si470x_poll exchanged against simple retval - * - 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) - * 2008-01-22 Tobias Lorenz <tobias.lorenz@gmx.net> - * Version 1.0.4 - * - avoid poss. locking when doing copy_to_user which may sleep - * - RDS is automatically activated on read now - * - code cleaned of unnecessary rds_commands - * - USB Vendor/Product ID for ADS/Tech FM Radio Receiver verified - * (thanks to Guillaume RAMOUSSE) - * 2008-01-27 Tobias Lorenz <tobias.lorenz@gmx.net> - * Version 1.0.5 - * - number of seek_retries changed to tune_timeout - * - fixed problem with incomplete tune operations by own buffers - * - optimization of variables and printf types - * - improved error logging - * 2008-01-31 Tobias Lorenz <tobias.lorenz@gmx.net> - * Oliver Neukum <oliver@neukum.org> - * Version 1.0.6 - * - fixed coverity checker warnings in *_usb_driver_disconnect - * - probe()/open() race by correct ordering in probe() - * - DMA coherency rules by separate allocation of all buffers - * - use of endianness macros - * - abuse of spinlock, replaced by mutex - * - racy handling of timer in disconnect, - * replaced by delayed_work - * - racy interruptible_sleep_on(), - * replaced with wait_event_interruptible() - * - handle signals in read() - * 2008-02-08 Tobias Lorenz <tobias.lorenz@gmx.net> - * Oliver Neukum <oliver@neukum.org> - * Version 1.0.7 - * - usb autosuspend support - * - unplugging fixed - * 2008-05-07 Tobias Lorenz <tobias.lorenz@gmx.net> - * Version 1.0.8 - * - hardware frequency seek support - * - afc indication - * - more safety checks, let si470x_get_freq return errno - * - vidioc behavior corrected according to v4l2 spec - * 2008-10-20 Alexey Klimov <klimov.linux@gmail.com> - * - add support for KWorld USB FM Radio FM700 - * - blacklisted KWorld radio in hid-core.c and hid-ids.h - * 2008-12-03 Mark Lord <mlord@pobox.com> - * - add support for DealExtreme USB Radio - * 2009-01-31 Bob Ross <pigiron@gmx.com> - * - correction of stereo detection/setting - * - correction of signal strength indicator scaling - * 2009-01-31 Rick Bronson <rick@efn.org> - * Tobias Lorenz <tobias.lorenz@gmx.net> - * - add LED status output - * - get HW/SW version from scratchpad - * - * ToDo: - * - add firmware download/update support - * - RDS support: interrupt mode, instead of polling - */ - - -/* driver definitions */ -#define DRIVER_AUTHOR "Tobias Lorenz <tobias.lorenz@gmx.net>" -#define DRIVER_NAME "radio-si470x" -#define DRIVER_KERNEL_VERSION KERNEL_VERSION(1, 0, 9) -#define DRIVER_CARD "Silicon Labs Si470x FM Radio Receiver" -#define DRIVER_DESC "USB radio driver for Si470x FM Radio Receivers" -#define DRIVER_VERSION "1.0.9" - - -/* kernel includes */ -#include <linux/kernel.h> -#include <linux/module.h> -#include <linux/init.h> -#include <linux/slab.h> -#include <linux/smp_lock.h> -#include <linux/input.h> -#include <linux/usb.h> -#include <linux/hid.h> -#include <linux/version.h> -#include <linux/videodev2.h> -#include <linux/mutex.h> -#include <media/v4l2-common.h> -#include <media/v4l2-ioctl.h> -#include <media/rds.h> -#include <asm/unaligned.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) }, - /* ADS/Tech FM Radio Receiver (formerly Instant FM Music) */ - { USB_DEVICE_AND_INTERFACE_INFO(0x06e1, 0xa155, USB_CLASS_HID, 0, 0) }, - /* KWorld USB FM Radio SnapMusic Mobile 700 (FM700) */ - { USB_DEVICE_AND_INTERFACE_INFO(0x1b80, 0xd700, USB_CLASS_HID, 0, 0) }, - /* Sanei Electric, Inc. FM USB Radio (sold as DealExtreme.com PCear) */ - { USB_DEVICE_AND_INTERFACE_INFO(0x10c5, 0x819a, 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, 0444); -MODULE_PARM_DESC(radio_nr, "Radio Nr"); - -/* Spacing (kHz) */ -/* 0: 200 kHz (USA, Australia) */ -/* 1: 100 kHz (Europe, Japan) */ -/* 2: 50 kHz */ -static unsigned short space = 2; -module_param(space, ushort, 0444); -MODULE_PARM_DESC(space, "Spacing: 0=200kHz 1=100kHz *2=50kHz*"); - -/* Bottom of Band (MHz) */ -/* 0: 87.5 - 108 MHz (USA, Europe)*/ -/* 1: 76 - 108 MHz (Japan wide band) */ -/* 2: 76 - 90 MHz (Japan) */ -static unsigned short band = 1; -module_param(band, ushort, 0444); -MODULE_PARM_DESC(band, "Band: 0=87.5..108MHz *1=76..108MHz* 2=76..90MHz"); - -/* De-emphasis */ -/* 0: 75 us (USA) */ -/* 1: 50 us (Europe, Australia, Japan) */ -static unsigned short de = 1; -module_param(de, ushort, 0444); -MODULE_PARM_DESC(de, "De-emphasis: 0=75us *1=50us*"); - -/* USB timeout */ -static unsigned int usb_timeout = 500; -module_param(usb_timeout, uint, 0644); -MODULE_PARM_DESC(usb_timeout, "USB timeout (ms): *500*"); - -/* Tune timeout */ -static unsigned int tune_timeout = 3000; -module_param(tune_timeout, uint, 0644); -MODULE_PARM_DESC(tune_timeout, "Tune timeout: *3000*"); - -/* Seek timeout */ -static unsigned int seek_timeout = 5000; -module_param(seek_timeout, uint, 0644); -MODULE_PARM_DESC(seek_timeout, "Seek timeout: *5000*"); - -/* RDS buffer blocks */ -static unsigned int rds_buf = 100; -module_param(rds_buf, uint, 0444); -MODULE_PARM_DESC(rds_buf, "RDS buffer entries: *100*"); - -/* RDS maximum block errors */ -static unsigned short max_rds_errors = 1; -/* 0 means 0 errors requiring correction */ -/* 1 means 1-2 errors requiring correction (used by original USBRadio.exe) */ -/* 2 means 3-5 errors requiring correction */ -/* 3 means 6+ errors or errors in checkword, correction not possible */ -module_param(max_rds_errors, ushort, 0644); -MODULE_PARM_DESC(max_rds_errors, "RDS maximum block errors: *1*"); - -/* RDS poll frequency */ -static unsigned int rds_poll_time = 40; -/* 40 is used by the original USBRadio.exe */ -/* 50 is used by radio-cadet */ -/* 75 should be okay */ -/* 80 is the usual RDS receive interval */ -module_param(rds_poll_time, uint, 0644); -MODULE_PARM_DESC(rds_poll_time, "RDS poll time (ms): *40*"); - - - -/************************************************************************** - * Register Definitions - **************************************************************************/ -#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 */ -#define DEVICEID_PN 0xf000 /* bits 15..12: Part Number */ -#define DEVICEID_MFGID 0x0fff /* bits 11..00: Manufacturer ID */ - -#define CHIPID 1 /* Chip ID */ -#define CHIPID_REV 0xfc00 /* bits 15..10: Chip Version */ -#define CHIPID_DEV 0x0200 /* bits 09..09: Device */ -#define CHIPID_FIRMWARE 0x01ff /* bits 08..00: Firmware Version */ - -#define POWERCFG 2 /* Power Configuration */ -#define POWERCFG_DSMUTE 0x8000 /* bits 15..15: Softmute Disable */ -#define POWERCFG_DMUTE 0x4000 /* bits 14..14: Mute Disable */ -#define POWERCFG_MONO 0x2000 /* bits 13..13: Mono Select */ -#define POWERCFG_RDSM 0x0800 /* bits 11..11: RDS Mode (Si4701 only) */ -#define POWERCFG_SKMODE 0x0400 /* bits 10..10: Seek Mode */ -#define POWERCFG_SEEKUP 0x0200 /* bits 09..09: Seek Direction */ -#define POWERCFG_SEEK 0x0100 /* bits 08..08: Seek */ -#define POWERCFG_DISABLE 0x0040 /* bits 06..06: Powerup Disable */ -#define POWERCFG_ENABLE 0x0001 /* bits 00..00: Powerup Enable */ - -#define CHANNEL 3 /* Channel */ -#define CHANNEL_TUNE 0x8000 /* bits 15..15: Tune */ -#define CHANNEL_CHAN 0x03ff /* bits 09..00: Channel Select */ - -#define SYSCONFIG1 4 /* System Configuration 1 */ -#define SYSCONFIG1_RDSIEN 0x8000 /* bits 15..15: RDS Interrupt Enable (Si4701 only) */ -#define SYSCONFIG1_STCIEN 0x4000 /* bits 14..14: Seek/Tune Complete Interrupt Enable */ -#define SYSCONFIG1_RDS 0x1000 /* bits 12..12: RDS Enable (Si4701 only) */ -#define SYSCONFIG1_DE 0x0800 /* bits 11..11: De-emphasis (0=75us 1=50us) */ -#define SYSCONFIG1_AGCD 0x0400 /* bits 10..10: AGC Disable */ -#define SYSCONFIG1_BLNDADJ 0x00c0 /* bits 07..06: Stereo/Mono Blend Level Adjustment */ -#define SYSCONFIG1_GPIO3 0x0030 /* bits 05..04: General Purpose I/O 3 */ -#define SYSCONFIG1_GPIO2 0x000c /* bits 03..02: General Purpose I/O 2 */ -#define SYSCONFIG1_GPIO1 0x0003 /* bits 01..00: General Purpose I/O 1 */ - -#define SYSCONFIG2 5 /* System Configuration 2 */ -#define SYSCONFIG2_SEEKTH 0xff00 /* bits 15..08: RSSI Seek Threshold */ -#define SYSCONFIG2_BAND 0x0080 /* bits 07..06: Band Select */ -#define SYSCONFIG2_SPACE 0x0030 /* bits 05..04: Channel Spacing */ -#define SYSCONFIG2_VOLUME 0x000f /* bits 03..00: Volume */ - -#define SYSCONFIG3 6 /* System Configuration 3 */ -#define SYSCONFIG3_SMUTER 0xc000 /* bits 15..14: Softmute Attack/Recover Rate */ -#define SYSCONFIG3_SMUTEA 0x3000 /* bits 13..12: Softmute Attenuation */ -#define SYSCONFIG3_SKSNR 0x00f0 /* bits 07..04: Seek SNR Threshold */ -#define SYSCONFIG3_SKCNT 0x000f /* bits 03..00: Seek FM Impulse Detection Threshold */ - -#define TEST1 7 /* Test 1 */ -#define TEST1_AHIZEN 0x4000 /* bits 14..14: Audio High-Z Enable */ - -#define TEST2 8 /* Test 2 */ -/* TEST2 only contains reserved bits */ - -#define BOOTCONFIG 9 /* Boot Configuration */ -/* BOOTCONFIG only contains reserved bits */ - -#define STATUSRSSI 10 /* Status RSSI */ -#define STATUSRSSI_RDSR 0x8000 /* bits 15..15: RDS Ready (Si4701 only) */ -#define STATUSRSSI_STC 0x4000 /* bits 14..14: Seek/Tune Complete */ -#define STATUSRSSI_SF 0x2000 /* bits 13..13: Seek Fail/Band Limit */ -#define STATUSRSSI_AFCRL 0x1000 /* bits 12..12: AFC Rail */ -#define STATUSRSSI_RDSS 0x0800 /* bits 11..11: RDS Synchronized (Si4701 only) */ -#define STATUSRSSI_BLERA 0x0600 /* bits 10..09: RDS Block A Errors (Si4701 only) */ -#define STATUSRSSI_ST 0x0100 /* bits 08..08: Stereo Indicator */ -#define STATUSRSSI_RSSI 0x00ff /* bits 07..00: RSSI (Received Signal Strength Indicator) */ - -#define READCHAN 11 /* Read Channel */ -#define READCHAN_BLERB 0xc000 /* bits 15..14: RDS Block D Errors (Si4701 only) */ -#define READCHAN_BLERC 0x3000 /* bits 13..12: RDS Block C Errors (Si4701 only) */ -#define READCHAN_BLERD 0x0c00 /* bits 11..10: RDS Block B Errors (Si4701 only) */ -#define READCHAN_READCHAN 0x03ff /* bits 09..00: Read Channel */ - -#define RDSA 12 /* RDSA */ -#define RDSA_RDSA 0xffff /* bits 15..00: RDS Block A Data (Si4701 only) */ - -#define RDSB 13 /* RDSB */ -#define RDSB_RDSB 0xffff /* bits 15..00: RDS Block B Data (Si4701 only) */ - -#define RDSC 14 /* RDSC */ -#define RDSC_RDSC 0xffff /* bits 15..00: RDS Block C Data (Si4701 only) */ - -#define RDSD 15 /* RDSD */ -#define RDSD_RDSD 0xffff /* bits 15..00: RDS Block D Data (Si4701 only) */ - - - -/************************************************************************** - * 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 (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 (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 * RADIO_REGISTER_SIZE + 1) -#define RDS_REPORT 18 - -/* Report 19: LED state */ -#define LED_REPORT_SIZE 3 -#define LED_REPORT 19 - -/* Report 19: stream */ -#define STREAM_REPORT_SIZE 3 -#define STREAM_REPORT 19 - -/* Report 20: scratch */ -#define SCRATCH_PAGE_SIZE 63 -#define SCRATCH_REPORT_SIZE (SCRATCH_PAGE_SIZE + 1) -#define SCRATCH_REPORT 20 - -/* Reports 19-22: flash upgrade of the C8051F321 */ -#define WRITE_REPORT_SIZE 4 -#define WRITE_REPORT 19 -#define FLASH_REPORT_SIZE 64 -#define FLASH_REPORT 20 -#define CRC_REPORT_SIZE 3 -#define CRC_REPORT 21 -#define RESPONSE_REPORT_SIZE 2 -#define RESPONSE_REPORT 22 - -/* Report 23: currently unused, but can accept 60 byte reports on the HID */ -/* interrupt out endpoint 2 every 1 millisecond */ -#define UNUSED_REPORT 23 - - - -/************************************************************************** - * Software/Hardware Versions - **************************************************************************/ -#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 - - - -/************************************************************************** - * LED State Definitions - **************************************************************************/ -#define LED_COMMAND 0x35 - -#define NO_CHANGE_LED 0x00 -#define ALL_COLOR_LED 0x01 /* streaming state */ -#define BLINK_GREEN_LED 0x02 /* connect state */ -#define BLINK_RED_LED 0x04 -#define BLINK_ORANGE_LED 0x10 /* disconnect state */ -#define SOLID_GREEN_LED 0x20 /* tuning/seeking state */ -#define SOLID_RED_LED 0x40 /* bootload state */ -#define SOLID_ORANGE_LED 0x80 - - - -/************************************************************************** - * Stream State Definitions - **************************************************************************/ -#define STREAM_COMMAND 0x36 -#define STREAM_VIDPID 0x00 -#define STREAM_AUDIO 0xff - - - -/************************************************************************** - * Bootloader / Flash Commands - **************************************************************************/ - -/* unique id sent to bootloader and required to put into a bootload state */ -#define UNIQUE_BL_ID 0x34 - -/* mask for the flash data */ -#define FLASH_DATA_MASK 0x55 - -/* bootloader commands */ -#define GET_SW_VERSION_COMMAND 0x00 -#define SET_PAGE_COMMAND 0x01 -#define ERASE_PAGE_COMMAND 0x02 -#define WRITE_PAGE_COMMAND 0x03 -#define CRC_ON_PAGE_COMMAND 0x04 -#define READ_FLASH_BYTE_COMMAND 0x05 -#define RESET_DEVICE_COMMAND 0x06 -#define GET_HW_VERSION_COMMAND 0x07 -#define BLANK 0xff - -/* bootloader command responses */ -#define COMMAND_OK 0x01 -#define COMMAND_FAILED 0x02 -#define COMMAND_PENDING 0x03 - - - -/************************************************************************** - * General Driver Definitions - **************************************************************************/ - -/* - * si470x_device - private data - */ -struct si470x_device { - /* reference to USB and video device */ - struct usb_device *usbdev; - struct usb_interface *intf; - struct video_device *videodev; - - /* driver management */ - unsigned int users; - unsigned char disconnected; - struct mutex disconnect_lock; - - /* Silabs internal registers (0..15) */ - unsigned short registers[RADIO_REGISTER_NUM]; - - /* RDS receive buffer */ - struct delayed_work work; - wait_queue_head_t read_queue; - struct mutex lock; /* buffer locking */ - unsigned char *buffer; /* size is always multiple of three */ - unsigned int buf_size; - unsigned int rd_index; - unsigned int wr_index; - - /* scratch page */ - unsigned char software_version; - unsigned char hardware_version; -}; - - -/* - * 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) - - - -/************************************************************************** - * General Driver Functions - REGISTER_REPORTs - **************************************************************************/ - -/* - * si470x_get_report - receive a HID report - */ -static int si470x_get_report(struct si470x_device *radio, void *buf, int size) -{ - unsigned char *report = (unsigned char *) buf; - int retval; - - retval = usb_control_msg(radio->usbdev, - usb_rcvctrlpipe(radio->usbdev, 0), - HID_REQ_GET_REPORT, - USB_TYPE_CLASS | USB_RECIP_INTERFACE | USB_DIR_IN, - report[0], 2, - buf, size, usb_timeout); - - if (retval < 0) - printk(KERN_WARNING DRIVER_NAME - ": si470x_get_report: usb_control_msg returned %d\n", - retval); - return retval; -} - - -/* - * si470x_set_report - send a HID report - */ -static int si470x_set_report(struct si470x_device *radio, void *buf, int size) -{ - unsigned char *report = (unsigned char *) buf; - int retval; - - retval = usb_control_msg(radio->usbdev, - usb_sndctrlpipe(radio->usbdev, 0), - HID_REQ_SET_REPORT, - USB_TYPE_CLASS | USB_RECIP_INTERFACE | USB_DIR_OUT, - report[0], 2, - buf, size, usb_timeout); - - if (retval < 0) - printk(KERN_WARNING DRIVER_NAME - ": si470x_set_report: usb_control_msg returned %d\n", - retval); - return retval; -} - - -/* - * si470x_get_register - read register - */ -static int si470x_get_register(struct si470x_device *radio, int regnr) -{ - unsigned char buf[REGISTER_REPORT_SIZE]; - int retval; - - buf[0] = REGISTER_REPORT(regnr); - - retval = si470x_get_report(radio, (void *) &buf, sizeof(buf)); - - if (retval >= 0) - radio->registers[regnr] = get_unaligned_be16(&buf[1]); - - return (retval < 0) ? -EINVAL : 0; -} - - -/* - * si470x_set_register - write register - */ -static int si470x_set_register(struct si470x_device *radio, int regnr) -{ - unsigned char buf[REGISTER_REPORT_SIZE]; - int retval; - - buf[0] = REGISTER_REPORT(regnr); - put_unaligned_be16(radio->registers[regnr], &buf[1]); - - retval = si470x_set_report(radio, (void *) &buf, sizeof(buf)); - - return (retval < 0) ? -EINVAL : 0; -} - - -/* - * si470x_set_chan - set the channel - */ -static int si470x_set_chan(struct si470x_device *radio, unsigned short chan) -{ - int retval; - unsigned long timeout; - bool timed_out = 0; - - /* start tuning */ - radio->registers[CHANNEL] &= ~CHANNEL_CHAN; - radio->registers[CHANNEL] |= CHANNEL_TUNE | chan; - retval = si470x_set_register(radio, CHANNEL); - if (retval < 0) - goto done; - - /* wait till tune operation has completed */ - timeout = jiffies + msecs_to_jiffies(tune_timeout); - do { - retval = si470x_get_register(radio, STATUSRSSI); - if (retval < 0) - goto stop; - timed_out = time_after(jiffies, timeout); - } while (((radio->registers[STATUSRSSI] & STATUSRSSI_STC) == 0) && - (!timed_out)); - if ((radio->registers[STATUSRSSI] & STATUSRSSI_STC) == 0) - printk(KERN_WARNING DRIVER_NAME ": tune does not complete\n"); - if (timed_out) - printk(KERN_WARNING DRIVER_NAME - ": tune timed out after %u ms\n", tune_timeout); - -stop: - /* stop tuning */ - radio->registers[CHANNEL] &= ~CHANNEL_TUNE; - retval = si470x_set_register(radio, CHANNEL); - -done: - return retval; -} - - -/* - * si470x_get_freq - get the frequency - */ -static int si470x_get_freq(struct si470x_device *radio, unsigned int *freq) -{ - unsigned int spacing, band_bottom; - unsigned short chan; - int retval; - - /* Spacing (kHz) */ - switch ((radio->registers[SYSCONFIG2] & SYSCONFIG2_SPACE) >> 4) { - /* 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 ((radio->registers[SYSCONFIG2] & SYSCONFIG2_BAND) >> 6) { - /* 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 */ - retval = si470x_get_register(radio, READCHAN); - chan = radio->registers[READCHAN] & READCHAN_READCHAN; - - /* Frequency (MHz) = Spacing (kHz) x Channel + Bottom of Band (MHz) */ - *freq = chan * spacing + band_bottom; - - return retval; -} - - -/* - * si470x_set_freq - set the frequency - */ -static int si470x_set_freq(struct si470x_device *radio, unsigned int freq) -{ - unsigned int spacing, band_bottom; - unsigned short chan; - - /* Spacing (kHz) */ - switch ((radio->registers[SYSCONFIG2] & SYSCONFIG2_SPACE) >> 4) { - /* 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 ((radio->registers[SYSCONFIG2] & SYSCONFIG2_BAND) >> 6) { - /* 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) */ - chan = (freq - band_bottom) / spacing; - - return si470x_set_chan(radio, chan); -} - - -/* - * si470x_set_seek - set seek - */ -static int si470x_set_seek(struct si470x_device *radio, - unsigned int wrap_around, unsigned int seek_upward) -{ - int retval = 0; - unsigned long timeout; - bool timed_out = 0; - - /* start seeking */ - radio->registers[POWERCFG] |= POWERCFG_SEEK; - if (wrap_around == 1) - radio->registers[POWERCFG] &= ~POWERCFG_SKMODE; - else - radio->registers[POWERCFG] |= POWERCFG_SKMODE; - if (seek_upward == 1) - radio->registers[POWERCFG] |= POWERCFG_SEEKUP; - else - radio->registers[POWERCFG] &= ~POWERCFG_SEEKUP; - retval = si470x_set_register(radio, POWERCFG); - if (retval < 0) - goto done; - - /* wait till seek operation has completed */ - timeout = jiffies + msecs_to_jiffies(seek_timeout); - do { - retval = si470x_get_register(radio, STATUSRSSI); - if (retval < 0) - goto stop; - timed_out = time_after(jiffies, timeout); - } while (((radio->registers[STATUSRSSI] & STATUSRSSI_STC) == 0) && - (!timed_out)); - if ((radio->registers[STATUSRSSI] & STATUSRSSI_STC) == 0) - printk(KERN_WARNING DRIVER_NAME ": seek does not complete\n"); - if (radio->registers[STATUSRSSI] & STATUSRSSI_SF) - printk(KERN_WARNING DRIVER_NAME - ": seek failed / band limit reached\n"); - if (timed_out) - printk(KERN_WARNING DRIVER_NAME - ": seek timed out after %u ms\n", seek_timeout); - -stop: - /* stop seeking */ - radio->registers[POWERCFG] &= ~POWERCFG_SEEK; - retval = si470x_set_register(radio, POWERCFG); - -done: - /* try again, if timed out */ - if ((retval == 0) && timed_out) - retval = -EAGAIN; - - return retval; -} - - -/* - * 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) - goto done; - - /* sysconfig 1 */ - radio->registers[SYSCONFIG1] = SYSCONFIG1_DE; - retval = si470x_set_register(radio, SYSCONFIG1); - if (retval < 0) - goto done; - - /* sysconfig 2 */ - radio->registers[SYSCONFIG2] = - (0x3f << 8) | /* SEEKTH */ - ((band << 6) & SYSCONFIG2_BAND) | /* BAND */ - ((space << 4) & SYSCONFIG2_SPACE) | /* SPACE */ - 15; /* VOLUME (max) */ - retval = si470x_set_register(radio, SYSCONFIG2); - if (retval < 0) - goto done; - - /* reset last channel */ - retval = si470x_set_chan(radio, - radio->registers[CHANNEL] & CHANNEL_CHAN); - -done: - return retval; -} - - -/* - * si470x_stop - switch off radio - */ -static int si470x_stop(struct si470x_device *radio) -{ - int retval; - - /* sysconfig 1 */ - radio->registers[SYSCONFIG1] &= ~SYSCONFIG1_RDS; - retval = si470x_set_register(radio, SYSCONFIG1); - if (retval < 0) - goto done; - - /* powercfg */ - radio->registers[POWERCFG] &= ~POWERCFG_DMUTE; - /* POWERCFG_ENABLE has to automatically go low */ - radio->registers[POWERCFG] |= POWERCFG_ENABLE | POWERCFG_DISABLE; - retval = si470x_set_register(radio, POWERCFG); - -done: - return retval; -} - - -/* - * si470x_rds_on - switch on rds reception - */ -static int si470x_rds_on(struct si470x_device *radio) -{ - int retval; - - /* sysconfig 1 */ - mutex_lock(&radio->lock); - radio->registers[SYSCONFIG1] |= SYSCONFIG1_RDS; - retval = si470x_set_register(radio, SYSCONFIG1); - if (retval < 0) - radio->registers[SYSCONFIG1] &= ~SYSCONFIG1_RDS; - mutex_unlock(&radio->lock); - - return retval; -} - - - -/************************************************************************** - * General Driver Functions - ENTIRE_REPORT - **************************************************************************/ - -/* - * si470x_get_all_registers - read entire registers - */ -static int si470x_get_all_registers(struct si470x_device *radio) -{ - unsigned char buf[ENTIRE_REPORT_SIZE]; - int retval; - unsigned char regnr; - - buf[0] = ENTIRE_REPORT; - - retval = si470x_get_report(radio, (void *) &buf, sizeof(buf)); - - if (retval >= 0) - for (regnr = 0; regnr < RADIO_REGISTER_NUM; regnr++) - radio->registers[regnr] = get_unaligned_be16( - &buf[regnr * RADIO_REGISTER_SIZE + 1]); - - return (retval < 0) ? -EINVAL : 0; -} - - - -/************************************************************************** - * General Driver Functions - RDS_REPORT - **************************************************************************/ - -/* - * si470x_get_rds_registers - read rds registers - */ -static int si470x_get_rds_registers(struct si470x_device *radio) -{ - unsigned char buf[RDS_REPORT_SIZE]; - int retval; - int size; - unsigned char regnr; - - buf[0] = RDS_REPORT; - - retval = usb_interrupt_msg(radio->usbdev, - usb_rcvintpipe(radio->usbdev, 1), - (void *) &buf, sizeof(buf), &size, usb_timeout); - if (size != sizeof(buf)) - printk(KERN_WARNING DRIVER_NAME ": si470x_get_rds_registers: " - "return size differs: %d != %zu\n", size, sizeof(buf)); - if (retval < 0) - printk(KERN_WARNING DRIVER_NAME ": si470x_get_rds_registers: " - "usb_interrupt_msg returned %d\n", retval); - - if (retval >= 0) - for (regnr = 0; regnr < RDS_REGISTER_NUM; regnr++) - radio->registers[STATUSRSSI + regnr] = - get_unaligned_be16( - &buf[regnr * RADIO_REGISTER_SIZE + 1]); - - return (retval < 0) ? -EINVAL : 0; -} - - - -/************************************************************************** - * General Driver Functions - LED_REPORT - **************************************************************************/ - -/* - * si470x_set_led_state - sets the led state - */ -static int si470x_set_led_state(struct si470x_device *radio, - unsigned char led_state) -{ - unsigned char buf[LED_REPORT_SIZE]; - int retval; - - buf[0] = LED_REPORT; - buf[1] = LED_COMMAND; - buf[2] = led_state; - - retval = si470x_set_report(radio, (void *) &buf, sizeof(buf)); - - return (retval < 0) ? -EINVAL : 0; -} - - - -/************************************************************************** - * General Driver Functions - SCRATCH_REPORT - **************************************************************************/ - -/* - * si470x_get_scratch_versions - gets the scratch page and version infos - */ -static int si470x_get_scratch_page_versions(struct si470x_device *radio) -{ - unsigned char buf[SCRATCH_REPORT_SIZE]; - int retval; - - buf[0] = SCRATCH_REPORT; - - retval = si470x_get_report(radio, (void *) &buf, sizeof(buf)); - - if (retval < 0) - printk(KERN_WARNING DRIVER_NAME ": si470x_get_scratch: " - "si470x_get_report returned %d\n", retval); - else { - radio->software_version = buf[1]; - radio->hardware_version = buf[2]; - } - - return (retval < 0) ? -EINVAL : 0; -} - - - -/************************************************************************** - * RDS Driver Functions - **************************************************************************/ - -/* - * si470x_rds - rds processing function - */ -static void si470x_rds(struct si470x_device *radio) -{ - unsigned char blocknum; - unsigned short bler; /* rds block errors */ - unsigned short rds; - unsigned char tmpbuf[3]; - - /* get rds blocks */ - if (si470x_get_rds_registers(radio) < 0) - return; - if ((radio->registers[STATUSRSSI] & STATUSRSSI_RDSR) == 0) { - /* No RDS group ready */ - return; - } - if ((radio->registers[STATUSRSSI] & STATUSRSSI_RDSS) == 0) { - /* RDS decoder not synchronized */ - return; - } - - /* copy all four RDS blocks to internal buffer */ - mutex_lock(&radio->lock); - 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; - }; - - /* Fill the V4L2 RDS buffer */ - put_unaligned_le16(rds, &tmpbuf); - tmpbuf[2] = blocknum; /* offset name */ - tmpbuf[2] |= blocknum << 3; /* received offset */ - if (bler > max_rds_errors) - tmpbuf[2] |= 0x80; /* uncorrectable errors */ - else if (bler > 0) - tmpbuf[2] |= 0x40; /* corrected error(s) */ - - /* copy RDS block to internal buffer */ - memcpy(&radio->buffer[radio->wr_index], &tmpbuf, 3); - radio->wr_index += 3; - - /* wrap write pointer */ - if (radio->wr_index >= radio->buf_size) - radio->wr_index = 0; - - /* check for overflow */ - if (radio->wr_index == radio->rd_index) { - /* increment and wrap read pointer */ - radio->rd_index += 3; - if (radio->rd_index >= radio->buf_size) - radio->rd_index = 0; - } - } - mutex_unlock(&radio->lock); - - /* wake up read queue */ - if (radio->wr_index != radio->rd_index) - wake_up_interruptible(&radio->read_queue); -} - - -/* - * si470x_work - rds work function - */ -static void si470x_work(struct work_struct *work) -{ - struct si470x_device *radio = container_of(work, struct si470x_device, - work.work); - - /* safety checks */ - if (radio->disconnected) - return; - if ((radio->registers[SYSCONFIG1] & SYSCONFIG1_RDS) == 0) - return; - - si470x_rds(radio); - schedule_delayed_work(&radio->work, msecs_to_jiffies(rds_poll_time)); -} - - - -/************************************************************************** - * File Operations Interface - **************************************************************************/ - -/* - * si470x_fops_read - read RDS data - */ -static ssize_t si470x_fops_read(struct file *file, char __user *buf, - size_t count, loff_t *ppos) -{ - struct si470x_device *radio = video_drvdata(file); - int retval = 0; - unsigned int block_count = 0; - - /* switch on rds reception */ - if ((radio->registers[SYSCONFIG1] & SYSCONFIG1_RDS) == 0) { - si470x_rds_on(radio); - schedule_delayed_work(&radio->work, - msecs_to_jiffies(rds_poll_time)); - } - - /* block if no new data available */ - while (radio->wr_index == radio->rd_index) { - if (file->f_flags & O_NONBLOCK) { - retval = -EWOULDBLOCK; - goto done; - } - if (wait_event_interruptible(radio->read_queue, - radio->wr_index != radio->rd_index) < 0) { - retval = -EINTR; - goto done; - } - } - - /* calculate block count from byte count */ - count /= 3; - - /* copy RDS block out of internal buffer and to user buffer */ - mutex_lock(&radio->lock); - while (block_count < count) { - if (radio->rd_index == radio->wr_index) - break; - - /* always transfer rds complete blocks */ - if (copy_to_user(buf, &radio->buffer[radio->rd_index], 3)) - /* retval = -EFAULT; */ - break; - - /* increment and wrap read pointer */ - radio->rd_index += 3; - if (radio->rd_index >= radio->buf_size) - radio->rd_index = 0; - - /* increment counters */ - block_count++; - buf += 3; - retval += 3; - } - mutex_unlock(&radio->lock); - -done: - return retval; -} - - -/* - * si470x_fops_poll - poll RDS data - */ -static unsigned int si470x_fops_poll(struct file *file, - struct poll_table_struct *pts) -{ - struct si470x_device *radio = video_drvdata(file); - int retval = 0; - - /* switch on rds reception */ - if ((radio->registers[SYSCONFIG1] & SYSCONFIG1_RDS) == 0) { - si470x_rds_on(radio); - schedule_delayed_work(&radio->work, - msecs_to_jiffies(rds_poll_time)); - } - - poll_wait(file, &radio->read_queue, pts); - - if (radio->rd_index != radio->wr_index) - retval = POLLIN | POLLRDNORM; - - return retval; -} - - -/* - * si470x_fops_open - file open - */ -static int si470x_fops_open(struct file *file) -{ - struct si470x_device *radio = video_drvdata(file); - int retval; - - lock_kernel(); - radio->users++; - - retval = usb_autopm_get_interface(radio->intf); - if (retval < 0) { - radio->users--; - retval = -EIO; - goto done; - } - - if (radio->users == 1) { - /* start radio */ - retval = si470x_start(radio); - if (retval < 0) - usb_autopm_put_interface(radio->intf); - } - -done: - unlock_kernel(); - return retval; -} - - -/* - * si470x_fops_release - file release - */ -static int si470x_fops_release(struct file *file) -{ - struct si470x_device *radio = video_drvdata(file); - int retval = 0; - - /* safety check */ - if (!radio) { - retval = -ENODEV; - goto done; - } - - mutex_lock(&radio->disconnect_lock); - radio->users--; - if (radio->users == 0) { - if (radio->disconnected) { - video_unregister_device(radio->videodev); - kfree(radio->buffer); - kfree(radio); - goto unlock; - } - - /* stop rds reception */ - cancel_delayed_work_sync(&radio->work); - - /* cancel read processes */ - wake_up_interruptible(&radio->read_queue); - - /* stop radio */ - retval = si470x_stop(radio); - usb_autopm_put_interface(radio->intf); - } -unlock: - mutex_unlock(&radio->disconnect_lock); -done: - return retval; -} - - -/* - * si470x_fops - file operations interface - */ -static const struct v4l2_file_operations si470x_fops = { - .owner = THIS_MODULE, - .read = si470x_fops_read, - .poll = si470x_fops_poll, - .ioctl = video_ioctl2, - .open = si470x_fops_open, - .release = si470x_fops_release, -}; - - - -/************************************************************************** - * Video4Linux Interface - **************************************************************************/ - -/* - * si470x_v4l2_queryctrl - query control - */ -static struct v4l2_queryctrl si470x_v4l2_queryctrl[] = { - { - .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_MUTE, - .type = V4L2_CTRL_TYPE_BOOLEAN, - .name = "Mute", - .minimum = 0, - .maximum = 1, - .step = 1, - .default_value = 1, - }, -}; - - -/* - * si470x_vidioc_querycap - query device capabilities - */ -static int si470x_vidioc_querycap(struct file *file, void *priv, - struct v4l2_capability *capability) -{ - struct si470x_device *radio = video_drvdata(file); - - strlcpy(capability->driver, DRIVER_NAME, sizeof(capability->driver)); - strlcpy(capability->card, DRIVER_CARD, sizeof(capability->card)); - usb_make_path(radio->usbdev, capability->bus_info, sizeof(capability->bus_info)); - capability->version = DRIVER_KERNEL_VERSION; - capability->capabilities = V4L2_CAP_HW_FREQ_SEEK | - V4L2_CAP_TUNER | V4L2_CAP_RADIO; - - return 0; -} - - -/* - * si470x_vidioc_queryctrl - enumerate control items - */ -static int si470x_vidioc_queryctrl(struct file *file, void *priv, - struct v4l2_queryctrl *qc) -{ - unsigned char i = 0; - int retval = -EINVAL; - - /* abort if qc->id is below V4L2_CID_BASE */ - if (qc->id < V4L2_CID_BASE) - goto done; - - /* search video control */ - for (i = 0; i < ARRAY_SIZE(si470x_v4l2_queryctrl); i++) { - if (qc->id == si470x_v4l2_queryctrl[i].id) { - memcpy(qc, &(si470x_v4l2_queryctrl[i]), sizeof(*qc)); - retval = 0; /* found */ - break; - } - } - - /* disable unsupported base controls */ - /* to satisfy kradio and such apps */ - if ((retval == -EINVAL) && (qc->id < V4L2_CID_LASTP1)) { - qc->flags = V4L2_CTRL_FLAG_DISABLED; - retval = 0; - } - -done: - if (retval < 0) - printk(KERN_WARNING DRIVER_NAME - ": query controls failed with %d\n", retval); - return retval; -} - - -/* - * si470x_vidioc_g_ctrl - get the value of a control - */ -static int si470x_vidioc_g_ctrl(struct file *file, void *priv, - struct v4l2_control *ctrl) -{ - struct si470x_device *radio = video_drvdata(file); - int retval = 0; - - /* safety checks */ - if (radio->disconnected) { - retval = -EIO; - goto done; - } - - 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; - default: - retval = -EINVAL; - } - -done: - if (retval < 0) - printk(KERN_WARNING DRIVER_NAME - ": get control failed with %d\n", retval); - return retval; -} - - -/* - * si470x_vidioc_s_ctrl - set the value of a control - */ -static int si470x_vidioc_s_ctrl(struct file *file, void *priv, - struct v4l2_control *ctrl) -{ - struct si470x_device *radio = video_drvdata(file); - int retval = 0; - - /* safety checks */ - if (radio->disconnected) { - retval = -EIO; - goto done; - } - - switch (ctrl->id) { - case V4L2_CID_AUDIO_VOLUME: - radio->registers[SYSCONFIG2] &= ~SYSCONFIG2_VOLUME; - radio->registers[SYSCONFIG2] |= ctrl->value; - retval = si470x_set_register(radio, SYSCONFIG2); - break; - case V4L2_CID_AUDIO_MUTE: - if (ctrl->value == 1) - radio->registers[POWERCFG] &= ~POWERCFG_DMUTE; - else - radio->registers[POWERCFG] |= POWERCFG_DMUTE; - retval = si470x_set_register(radio, POWERCFG); - break; - default: - retval = -EINVAL; - } - -done: - if (retval < 0) - printk(KERN_WARNING DRIVER_NAME - ": set control failed with %d\n", retval); - return retval; -} - - -/* - * si470x_vidioc_g_audio - get audio attributes - */ -static int si470x_vidioc_g_audio(struct file *file, void *priv, - struct v4l2_audio *audio) -{ - /* driver constants */ - audio->index = 0; - strcpy(audio->name, "Radio"); - audio->capability = V4L2_AUDCAP_STEREO; - audio->mode = 0; - - return 0; -} - - -/* - * si470x_vidioc_g_tuner - get tuner attributes - */ -static int si470x_vidioc_g_tuner(struct file *file, void *priv, - struct v4l2_tuner *tuner) -{ - struct si470x_device *radio = video_drvdata(file); - int retval = 0; - - /* safety checks */ - if (radio->disconnected) { - retval = -EIO; - goto done; - } - if (tuner->index != 0) { - retval = -EINVAL; - goto done; - } - - retval = si470x_get_register(radio, STATUSRSSI); - if (retval < 0) - goto done; - - /* driver constants */ - strcpy(tuner->name, "FM"); - tuner->type = V4L2_TUNER_RADIO; - tuner->capability = V4L2_TUNER_CAP_LOW | V4L2_TUNER_CAP_STEREO; - - /* range limits */ - switch ((radio->registers[SYSCONFIG2] & SYSCONFIG2_BAND) >> 6) { - /* 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; - }; - - /* stereo indicator == stereo (instead of mono) */ - if ((radio->registers[STATUSRSSI] & STATUSRSSI_ST) == 0) - tuner->rxsubchans = V4L2_TUNER_SUB_MONO; - else - tuner->rxsubchans = V4L2_TUNER_SUB_MONO | V4L2_TUNER_SUB_STEREO; - - /* mono/stereo selector */ - if ((radio->registers[POWERCFG] & POWERCFG_MONO) == 0) - tuner->audmode = V4L2_TUNER_MODE_STEREO; - else - tuner->audmode = V4L2_TUNER_MODE_MONO; - - /* min is worst, max is best; signal:0..0xffff; rssi: 0..0xff */ - /* measured in units of dbµV in 1 db increments (max at ~75 dbµV) */ - tuner->signal = (radio->registers[STATUSRSSI] & STATUSRSSI_RSSI); - /* the ideal factor is 0xffff/75 = 873,8 */ - tuner->signal = (tuner->signal * 873) + (8 * tuner->signal / 10); - - /* automatic frequency control: -1: freq to low, 1 freq to high */ - /* AFCRL does only indicate that freq. differs, not if too low/high */ - tuner->afc = (radio->registers[STATUSRSSI] & STATUSRSSI_AFCRL) ? 1 : 0; - -done: - if (retval < 0) - printk(KERN_WARNING DRIVER_NAME - ": get tuner failed with %d\n", retval); - return retval; -} - - -/* - * si470x_vidioc_s_tuner - set tuner attributes - */ -static int si470x_vidioc_s_tuner(struct file *file, void *priv, - struct v4l2_tuner *tuner) -{ - struct si470x_device *radio = video_drvdata(file); - int retval = -EINVAL; - - /* safety checks */ - if (radio->disconnected) { - retval = -EIO; - goto done; - } - if (tuner->index != 0) - goto done; - - /* mono/stereo selector */ - switch (tuner->audmode) { - case V4L2_TUNER_MODE_MONO: - radio->registers[POWERCFG] |= POWERCFG_MONO; /* force mono */ - break; - case V4L2_TUNER_MODE_STEREO: - radio->registers[POWERCFG] &= ~POWERCFG_MONO; /* try stereo */ - break; - default: - goto done; - } - - retval = si470x_set_register(radio, POWERCFG); - -done: - if (retval < 0) - printk(KERN_WARNING DRIVER_NAME - ": set tuner failed with %d\n", retval); - return retval; -} - - -/* - * si470x_vidioc_g_frequency - get tuner or modulator radio frequency - */ -static int si470x_vidioc_g_frequency(struct file *file, void *priv, - struct v4l2_frequency *freq) -{ - struct si470x_device *radio = video_drvdata(file); - int retval = 0; - - /* safety checks */ - if (radio->disconnected) { - retval = -EIO; - goto done; - } - if (freq->tuner != 0) { - retval = -EINVAL; - goto done; - } - - freq->type = V4L2_TUNER_RADIO; - retval = si470x_get_freq(radio, &freq->frequency); - -done: - if (retval < 0) - printk(KERN_WARNING DRIVER_NAME - ": get frequency failed with %d\n", retval); - return retval; -} - - -/* - * si470x_vidioc_s_frequency - set tuner or modulator radio frequency - */ -static int si470x_vidioc_s_frequency(struct file *file, void *priv, - struct v4l2_frequency *freq) -{ - struct si470x_device *radio = video_drvdata(file); - int retval = 0; - - /* safety checks */ - if (radio->disconnected) { - retval = -EIO; - goto done; - } - if (freq->tuner != 0) { - retval = -EINVAL; - goto done; - } - - retval = si470x_set_freq(radio, freq->frequency); - -done: - if (retval < 0) - printk(KERN_WARNING DRIVER_NAME - ": set frequency failed with %d\n", retval); - return retval; -} - - -/* - * si470x_vidioc_s_hw_freq_seek - set hardware frequency seek - */ -static int si470x_vidioc_s_hw_freq_seek(struct file *file, void *priv, - struct v4l2_hw_freq_seek *seek) -{ - struct si470x_device *radio = video_drvdata(file); - int retval = 0; - - /* safety checks */ - if (radio->disconnected) { - retval = -EIO; - goto done; - } - if (seek->tuner != 0) { - retval = -EINVAL; - goto done; - } - - retval = si470x_set_seek(radio, seek->wrap_around, seek->seek_upward); - -done: - if (retval < 0) - printk(KERN_WARNING DRIVER_NAME - ": set hardware frequency seek failed with %d\n", - retval); - return retval; -} - - -/* - * si470x_ioctl_ops - video device ioctl operations - */ -static const struct v4l2_ioctl_ops si470x_ioctl_ops = { - .vidioc_querycap = si470x_vidioc_querycap, - .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_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, - .vidioc_s_hw_freq_seek = si470x_vidioc_s_hw_freq_seek, -}; - - -/* - * si470x_viddev_template - video device interface - */ -static struct video_device si470x_viddev_template = { - .fops = &si470x_fops, - .name = DRIVER_NAME, - .release = video_device_release, - .ioctl_ops = &si470x_ioctl_ops, -}; - - - -/************************************************************************** - * 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; - int retval = 0; - - /* private data allocation and initialization */ - radio = kzalloc(sizeof(struct si470x_device), GFP_KERNEL); - if (!radio) { - retval = -ENOMEM; - goto err_initial; - } - radio->users = 0; - radio->disconnected = 0; - radio->usbdev = interface_to_usbdev(intf); - radio->intf = intf; - mutex_init(&radio->disconnect_lock); - mutex_init(&radio->lock); - - /* video device allocation and initialization */ - radio->videodev = video_device_alloc(); - if (!radio->videodev) { - retval = -ENOMEM; - goto err_radio; - } - memcpy(radio->videodev, &si470x_viddev_template, - sizeof(si470x_viddev_template)); - video_set_drvdata(radio->videodev, radio); - - /* show some infos about the specific si470x device */ - if (si470x_get_all_registers(radio) < 0) { - retval = -EIO; - goto err_video; - } - printk(KERN_INFO DRIVER_NAME ": DeviceID=0x%4.4hx ChipID=0x%4.4hx\n", - radio->registers[DEVICEID], radio->registers[CHIPID]); - - /* get software and hardware versions */ - if (si470x_get_scratch_page_versions(radio) < 0) { - retval = -EIO; - goto err_video; - } - printk(KERN_INFO DRIVER_NAME - ": software version %d, hardware version %d\n", - radio->software_version, radio->hardware_version); - - /* check if device and 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 " - "firmware version %hu,\n", RADIO_SW_VERSION_CURRENT); - printk(KERN_WARNING DRIVER_NAME - ": but the device has firmware version %hu.\n", - radio->registers[CHIPID] & CHIPID_FIRMWARE); - printk(KERN_WARNING DRIVER_NAME - ": If you have some trouble using this driver,\n"); - printk(KERN_WARNING DRIVER_NAME - ": please report to V4L ML at " - "linux-media@vger.kernel.org\n"); - } - - /* set initial frequency */ - si470x_set_freq(radio, 87.5 * FREQ_MUL); /* available in all regions */ - - /* set led to connect state */ - si470x_set_led_state(radio, BLINK_GREEN_LED); - - /* rds buffer allocation */ - radio->buf_size = rds_buf * 3; - radio->buffer = kmalloc(radio->buf_size, GFP_KERNEL); - if (!radio->buffer) { - retval = -EIO; - goto err_video; - } - - /* rds buffer configuration */ - radio->wr_index = 0; - radio->rd_index = 0; - init_waitqueue_head(&radio->read_queue); - - /* prepare rds work function */ - INIT_DELAYED_WORK(&radio->work, si470x_work); - - /* register video device */ - retval = video_register_device(radio->videodev, VFL_TYPE_RADIO, radio_nr); - if (retval) { - printk(KERN_WARNING DRIVER_NAME - ": Could not register video device\n"); - goto err_all; - } - usb_set_intfdata(intf, radio); - - return 0; -err_all: - kfree(radio->buffer); -err_video: - video_device_release(radio->videodev); -err_radio: - kfree(radio); -err_initial: - return retval; -} - - -/* - * si470x_usb_driver_suspend - suspend the device - */ -static int si470x_usb_driver_suspend(struct usb_interface *intf, - pm_message_t message) -{ - struct si470x_device *radio = usb_get_intfdata(intf); - - printk(KERN_INFO DRIVER_NAME ": suspending now...\n"); - - cancel_delayed_work_sync(&radio->work); - - return 0; -} - - -/* - * si470x_usb_driver_resume - resume the device - */ -static int si470x_usb_driver_resume(struct usb_interface *intf) -{ - struct si470x_device *radio = usb_get_intfdata(intf); - - printk(KERN_INFO DRIVER_NAME ": resuming now...\n"); - - mutex_lock(&radio->lock); - if (radio->users && radio->registers[SYSCONFIG1] & SYSCONFIG1_RDS) - schedule_delayed_work(&radio->work, - msecs_to_jiffies(rds_poll_time)); - mutex_unlock(&radio->lock); - - 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); - - mutex_lock(&radio->disconnect_lock); - radio->disconnected = 1; - cancel_delayed_work_sync(&radio->work); - usb_set_intfdata(intf, NULL); - if (radio->users == 0) { - /* set led to disconnect state */ - si470x_set_led_state(radio, BLINK_ORANGE_LED); - - video_unregister_device(radio->videodev); - kfree(radio->buffer); - kfree(radio); - } - mutex_unlock(&radio->disconnect_lock); -} - - -/* - * 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, - .suspend = si470x_usb_driver_suspend, - .resume = si470x_usb_driver_resume, - .id_table = si470x_usb_driver_id_table, - .supports_autosuspend = 1, -}; - - - -/************************************************************************** - * Module Interface - **************************************************************************/ - -/* - * si470x_module_init - module init - */ -static int __init si470x_module_init(void) -{ - printk(KERN_INFO DRIVER_DESC ", Version " DRIVER_VERSION "\n"); - return usb_register(&si470x_usb_driver); -} - - -/* - * si470x_module_exit - module exit - */ -static void __exit si470x_module_exit(void) -{ - usb_deregister(&si470x_usb_driver); -} - - -module_init(si470x_module_init); -module_exit(si470x_module_exit); - -MODULE_LICENSE("GPL"); -MODULE_AUTHOR(DRIVER_AUTHOR); -MODULE_DESCRIPTION(DRIVER_DESC); -MODULE_VERSION(DRIVER_VERSION); diff --git a/drivers/media/radio/radio-si4713.c b/drivers/media/radio/radio-si4713.c new file mode 100644 index 00000000000..65c14b70458 --- /dev/null +++ b/drivers/media/radio/radio-si4713.c @@ -0,0 +1,367 @@ +/* + * drivers/media/radio/radio-si4713.c + * + * Platform Driver for Silicon Labs Si4713 FM Radio Transmitter: + * + * Copyright (c) 2008 Instituto Nokia de Tecnologia - INdT + * Contact: Eduardo Valentin <eduardo.valentin@nokia.com> + * + * 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 + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * 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 + */ + +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/init.h> +#include <linux/version.h> +#include <linux/platform_device.h> +#include <linux/i2c.h> +#include <linux/videodev2.h> +#include <media/v4l2-device.h> +#include <media/v4l2-common.h> +#include <media/v4l2-ioctl.h> +#include <media/radio-si4713.h> + +/* module parameters */ +static int radio_nr = -1; /* radio device minor (-1 ==> auto assign) */ +module_param(radio_nr, int, 0); +MODULE_PARM_DESC(radio_nr, + "Minor number for radio device (-1 ==> auto assign)"); + +MODULE_LICENSE("GPL"); +MODULE_AUTHOR("Eduardo Valentin <eduardo.valentin@nokia.com>"); +MODULE_DESCRIPTION("Platform driver for Si4713 FM Radio Transmitter"); +MODULE_VERSION("0.0.1"); + +/* Driver state struct */ +struct radio_si4713_device { + struct v4l2_device v4l2_dev; + struct video_device *radio_dev; +}; + +/* radio_si4713_fops - file operations interface */ +static const struct v4l2_file_operations radio_si4713_fops = { + .owner = THIS_MODULE, + .ioctl = video_ioctl2, +}; + +/* Video4Linux Interface */ +static int radio_si4713_fill_audout(struct v4l2_audioout *vao) +{ + /* TODO: check presence of audio output */ + strlcpy(vao->name, "FM Modulator Audio Out", 32); + + return 0; +} + +static int radio_si4713_enumaudout(struct file *file, void *priv, + struct v4l2_audioout *vao) +{ + return radio_si4713_fill_audout(vao); +} + +static int radio_si4713_g_audout(struct file *file, void *priv, + struct v4l2_audioout *vao) +{ + int rval = radio_si4713_fill_audout(vao); + + vao->index = 0; + + return rval; +} + +static int radio_si4713_s_audout(struct file *file, void *priv, + struct v4l2_audioout *vao) +{ + return vao->index ? -EINVAL : 0; +} + +/* radio_si4713_querycap - query device capabilities */ +static int radio_si4713_querycap(struct file *file, void *priv, + struct v4l2_capability *capability) +{ + struct radio_si4713_device *rsdev; + + rsdev = video_get_drvdata(video_devdata(file)); + + strlcpy(capability->driver, "radio-si4713", sizeof(capability->driver)); + strlcpy(capability->card, "Silicon Labs Si4713 Modulator", + sizeof(capability->card)); + capability->capabilities = V4L2_CAP_MODULATOR | V4L2_CAP_RDS_OUTPUT; + + return 0; +} + +/* radio_si4713_queryctrl - enumerate control items */ +static int radio_si4713_queryctrl(struct file *file, void *priv, + struct v4l2_queryctrl *qc) +{ + /* Must be sorted from low to high control ID! */ + static const u32 user_ctrls[] = { + V4L2_CID_USER_CLASS, + V4L2_CID_AUDIO_MUTE, + 0 + }; + + /* Must be sorted from low to high control ID! */ + static const u32 fmtx_ctrls[] = { + V4L2_CID_FM_TX_CLASS, + V4L2_CID_RDS_TX_DEVIATION, + V4L2_CID_RDS_TX_PI, + V4L2_CID_RDS_TX_PTY, + V4L2_CID_RDS_TX_PS_NAME, + V4L2_CID_RDS_TX_RADIO_TEXT, + V4L2_CID_AUDIO_LIMITER_ENABLED, + V4L2_CID_AUDIO_LIMITER_RELEASE_TIME, + V4L2_CID_AUDIO_LIMITER_DEVIATION, + V4L2_CID_AUDIO_COMPRESSION_ENABLED, + V4L2_CID_AUDIO_COMPRESSION_GAIN, + V4L2_CID_AUDIO_COMPRESSION_THRESHOLD, + V4L2_CID_AUDIO_COMPRESSION_ATTACK_TIME, + V4L2_CID_AUDIO_COMPRESSION_RELEASE_TIME, + V4L2_CID_PILOT_TONE_ENABLED, + V4L2_CID_PILOT_TONE_DEVIATION, + V4L2_CID_PILOT_TONE_FREQUENCY, + V4L2_CID_TUNE_PREEMPHASIS, + V4L2_CID_TUNE_POWER_LEVEL, + V4L2_CID_TUNE_ANTENNA_CAPACITOR, + 0 + }; + static const u32 *ctrl_classes[] = { + user_ctrls, + fmtx_ctrls, + NULL + }; + struct radio_si4713_device *rsdev; + + rsdev = video_get_drvdata(video_devdata(file)); + + qc->id = v4l2_ctrl_next(ctrl_classes, qc->id); + if (qc->id == 0) + return -EINVAL; + + if (qc->id == V4L2_CID_USER_CLASS || qc->id == V4L2_CID_FM_TX_CLASS) + return v4l2_ctrl_query_fill(qc, 0, 0, 0, 0); + + return v4l2_device_call_until_err(&rsdev->v4l2_dev, 0, core, + queryctrl, qc); +} + +/* + * v4l2 ioctl call backs. + * we are just a wrapper for v4l2_sub_devs. + */ +static inline struct v4l2_device *get_v4l2_dev(struct file *file) +{ + return &((struct radio_si4713_device *)video_drvdata(file))->v4l2_dev; +} + +static int radio_si4713_g_ext_ctrls(struct file *file, void *p, + struct v4l2_ext_controls *vecs) +{ + return v4l2_device_call_until_err(get_v4l2_dev(file), 0, core, + g_ext_ctrls, vecs); +} + +static int radio_si4713_s_ext_ctrls(struct file *file, void *p, + struct v4l2_ext_controls *vecs) +{ + return v4l2_device_call_until_err(get_v4l2_dev(file), 0, core, + s_ext_ctrls, vecs); +} + +static int radio_si4713_g_ctrl(struct file *file, void *p, + struct v4l2_control *vc) +{ + return v4l2_device_call_until_err(get_v4l2_dev(file), 0, core, + g_ctrl, vc); +} + +static int radio_si4713_s_ctrl(struct file *file, void *p, + struct v4l2_control *vc) +{ + return v4l2_device_call_until_err(get_v4l2_dev(file), 0, core, + s_ctrl, vc); +} + +static int radio_si4713_g_modulator(struct file *file, void *p, + struct v4l2_modulator *vm) +{ + return v4l2_device_call_until_err(get_v4l2_dev(file), 0, tuner, + g_modulator, vm); +} + +static int radio_si4713_s_modulator(struct file *file, void *p, + struct v4l2_modulator *vm) +{ + return v4l2_device_call_until_err(get_v4l2_dev(file), 0, tuner, + s_modulator, vm); +} + +static int radio_si4713_g_frequency(struct file *file, void *p, + struct v4l2_frequency *vf) +{ + return v4l2_device_call_until_err(get_v4l2_dev(file), 0, tuner, + g_frequency, vf); +} + +static int radio_si4713_s_frequency(struct file *file, void *p, + struct v4l2_frequency *vf) +{ + return v4l2_device_call_until_err(get_v4l2_dev(file), 0, tuner, + s_frequency, vf); +} + +static long radio_si4713_default(struct file *file, void *p, int cmd, void *arg) +{ + return v4l2_device_call_until_err(get_v4l2_dev(file), 0, core, + ioctl, cmd, arg); +} + +static struct v4l2_ioctl_ops radio_si4713_ioctl_ops = { + .vidioc_enumaudout = radio_si4713_enumaudout, + .vidioc_g_audout = radio_si4713_g_audout, + .vidioc_s_audout = radio_si4713_s_audout, + .vidioc_querycap = radio_si4713_querycap, + .vidioc_queryctrl = radio_si4713_queryctrl, + .vidioc_g_ext_ctrls = radio_si4713_g_ext_ctrls, + .vidioc_s_ext_ctrls = radio_si4713_s_ext_ctrls, + .vidioc_g_ctrl = radio_si4713_g_ctrl, + .vidioc_s_ctrl = radio_si4713_s_ctrl, + .vidioc_g_modulator = radio_si4713_g_modulator, + .vidioc_s_modulator = radio_si4713_s_modulator, + .vidioc_g_frequency = radio_si4713_g_frequency, + .vidioc_s_frequency = radio_si4713_s_frequency, + .vidioc_default = radio_si4713_default, +}; + +/* radio_si4713_vdev_template - video device interface */ +static struct video_device radio_si4713_vdev_template = { + .fops = &radio_si4713_fops, + .name = "radio-si4713", + .release = video_device_release, + .ioctl_ops = &radio_si4713_ioctl_ops, +}; + +/* Platform driver interface */ +/* radio_si4713_pdriver_probe - probe for the device */ +static int radio_si4713_pdriver_probe(struct platform_device *pdev) +{ + struct radio_si4713_platform_data *pdata = pdev->dev.platform_data; + struct radio_si4713_device *rsdev; + struct i2c_adapter *adapter; + struct v4l2_subdev *sd; + int rval = 0; + + if (!pdata) { + dev_err(&pdev->dev, "Cannot proceed without platform data.\n"); + rval = -EINVAL; + goto exit; + } + + rsdev = kzalloc(sizeof *rsdev, GFP_KERNEL); + if (!rsdev) { + dev_err(&pdev->dev, "Failed to alloc video device.\n"); + rval = -ENOMEM; + goto exit; + } + + rval = v4l2_device_register(&pdev->dev, &rsdev->v4l2_dev); + if (rval) { + dev_err(&pdev->dev, "Failed to register v4l2 device.\n"); + goto free_rsdev; + } + + adapter = i2c_get_adapter(pdata->i2c_bus); + if (!adapter) { + dev_err(&pdev->dev, "Cannot get i2c adapter %d\n", + pdata->i2c_bus); + rval = -ENODEV; + goto unregister_v4l2_dev; + } + + sd = v4l2_i2c_new_subdev_board(&rsdev->v4l2_dev, adapter, "si4713_i2c", + pdata->subdev_board_info, NULL); + if (!sd) { + dev_err(&pdev->dev, "Cannot get v4l2 subdevice\n"); + rval = -ENODEV; + goto unregister_v4l2_dev; + } + + rsdev->radio_dev = video_device_alloc(); + if (!rsdev->radio_dev) { + dev_err(&pdev->dev, "Failed to alloc video device.\n"); + rval = -ENOMEM; + goto unregister_v4l2_dev; + } + + memcpy(rsdev->radio_dev, &radio_si4713_vdev_template, + sizeof(radio_si4713_vdev_template)); + video_set_drvdata(rsdev->radio_dev, rsdev); + if (video_register_device(rsdev->radio_dev, VFL_TYPE_RADIO, radio_nr)) { + dev_err(&pdev->dev, "Could not register video device.\n"); + rval = -EIO; + goto free_vdev; + } + dev_info(&pdev->dev, "New device successfully probed\n"); + + goto exit; + +free_vdev: + video_device_release(rsdev->radio_dev); +unregister_v4l2_dev: + v4l2_device_unregister(&rsdev->v4l2_dev); +free_rsdev: + kfree(rsdev); +exit: + return rval; +} + +/* radio_si4713_pdriver_remove - remove the device */ +static int __exit radio_si4713_pdriver_remove(struct platform_device *pdev) +{ + struct v4l2_device *v4l2_dev = platform_get_drvdata(pdev); + struct radio_si4713_device *rsdev = container_of(v4l2_dev, + struct radio_si4713_device, + v4l2_dev); + + video_unregister_device(rsdev->radio_dev); + v4l2_device_unregister(&rsdev->v4l2_dev); + kfree(rsdev); + + return 0; +} + +static struct platform_driver radio_si4713_pdriver = { + .driver = { + .name = "radio-si4713", + }, + .probe = radio_si4713_pdriver_probe, + .remove = __exit_p(radio_si4713_pdriver_remove), +}; + +/* Module Interface */ +static int __init radio_si4713_module_init(void) +{ + return platform_driver_register(&radio_si4713_pdriver); +} + +static void __exit radio_si4713_module_exit(void) +{ + platform_driver_unregister(&radio_si4713_pdriver); +} + +module_init(radio_si4713_module_init); +module_exit(radio_si4713_module_exit); + diff --git a/drivers/media/radio/si470x/Kconfig b/drivers/media/radio/si470x/Kconfig new file mode 100644 index 00000000000..a466654ee5c --- /dev/null +++ b/drivers/media/radio/si470x/Kconfig @@ -0,0 +1,37 @@ +config USB_SI470X + tristate "Silicon Labs Si470x FM Radio Receiver support with USB" + depends on USB && RADIO_SI470X + ---help--- + This is a driver for USB devices with the Silicon Labs SI470x + chip. Currently these devices are known to work: + - 10c4:818a: Silicon Labs USB FM Radio Reference Design + - 06e1:a155: ADS/Tech FM Radio Receiver (formerly Instant FM Music) + - 1b80:d700: KWorld USB FM Radio SnapMusic Mobile 700 (FM700) + - 10c5:819a: Sanei Electric FM USB Radio (aka DealExtreme.com PCear) + + Sound is provided by the ALSA USB Audio/MIDI driver. Therefore + if you don't want to use the device solely for RDS receiving, + it is recommended to also select SND_USB_AUDIO. + + Please have a look at the documentation, especially on how + to redirect the audio stream from the radio to your sound device: + Documentation/video4linux/si470x.txt + + Say Y here if you want to connect this type of radio to your + computer's USB port. + + To compile this driver as a module, choose M here: the + module will be called radio-usb-si470x. + +config I2C_SI470X + tristate "Silicon Labs Si470x FM Radio Receiver support with I2C" + depends on I2C && RADIO_SI470X && !USB_SI470X + ---help--- + This is a driver for I2C devices with the Silicon Labs SI470x + chip. + + Say Y here if you want to connect this type of radio to your + computer's I2C port. + + To compile this driver as a module, choose M here: the + module will be called radio-i2c-si470x. diff --git a/drivers/media/radio/si470x/Makefile b/drivers/media/radio/si470x/Makefile new file mode 100644 index 00000000000..06964816cfd --- /dev/null +++ b/drivers/media/radio/si470x/Makefile @@ -0,0 +1,9 @@ +# +# Makefile for radios with Silicon Labs Si470x FM Radio Receivers +# + +radio-usb-si470x-objs := radio-si470x-usb.o radio-si470x-common.o +radio-i2c-si470x-objs := radio-si470x-i2c.o radio-si470x-common.o + +obj-$(CONFIG_USB_SI470X) += radio-usb-si470x.o +obj-$(CONFIG_I2C_SI470X) += radio-i2c-si470x.o diff --git a/drivers/media/radio/si470x/radio-si470x-common.c b/drivers/media/radio/si470x/radio-si470x-common.c new file mode 100644 index 00000000000..f33315f2c54 --- /dev/null +++ b/drivers/media/radio/si470x/radio-si470x-common.c @@ -0,0 +1,798 @@ +/* + * drivers/media/radio/si470x/radio-si470x-common.c + * + * Driver for radios with Silicon Labs Si470x FM Radio Receivers + * + * Copyright (c) 2009 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 + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * 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 + */ + + +/* + * History: + * 2008-01-12 Tobias Lorenz <tobias.lorenz@gmx.net> + * Version 1.0.0 + * - First working version + * 2008-01-13 Tobias Lorenz <tobias.lorenz@gmx.net> + * 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 + * - RDS support added (polling mode via interrupt EP 1) + * - marked default module parameters with *value* + * - switched from bit structs to bit masks + * - header file cleaned and integrated + * 2008-01-14 Tobias Lorenz <tobias.lorenz@gmx.net> + * Version 1.0.2 + * - hex values are now lower case + * - commented USB ID for ADS/Tech moved on todo list + * - blacklisted si470x in hid-quirks.c + * - rds buffer handling functions integrated into *_work, *_read + * - rds_command in si470x_poll exchanged against simple retval + * - 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) + * 2008-01-22 Tobias Lorenz <tobias.lorenz@gmx.net> + * Version 1.0.4 + * - avoid poss. locking when doing copy_to_user which may sleep + * - RDS is automatically activated on read now + * - code cleaned of unnecessary rds_commands + * - USB Vendor/Product ID for ADS/Tech FM Radio Receiver verified + * (thanks to Guillaume RAMOUSSE) + * 2008-01-27 Tobias Lorenz <tobias.lorenz@gmx.net> + * Version 1.0.5 + * - number of seek_retries changed to tune_timeout + * - fixed problem with incomplete tune operations by own buffers + * - optimization of variables and printf types + * - improved error logging + * 2008-01-31 Tobias Lorenz <tobias.lorenz@gmx.net> + * Oliver Neukum <oliver@neukum.org> + * Version 1.0.6 + * - fixed coverity checker warnings in *_usb_driver_disconnect + * - probe()/open() race by correct ordering in probe() + * - DMA coherency rules by separate allocation of all buffers + * - use of endianness macros + * - abuse of spinlock, replaced by mutex + * - racy handling of timer in disconnect, + * replaced by delayed_work + * - racy interruptible_sleep_on(), + * replaced with wait_event_interruptible() + * - handle signals in read() + * 2008-02-08 Tobias Lorenz <tobias.lorenz@gmx.net> + * Oliver Neukum <oliver@neukum.org> + * Version 1.0.7 + * - usb autosuspend support + * - unplugging fixed + * 2008-05-07 Tobias Lorenz <tobias.lorenz@gmx.net> + * Version 1.0.8 + * - hardware frequency seek support + * - afc indication + * - more safety checks, let si470x_get_freq return errno + * - vidioc behavior corrected according to v4l2 spec + * 2008-10-20 Alexey Klimov <klimov.linux@gmail.com> + * - add support for KWorld USB FM Radio FM700 + * - blacklisted KWorld radio in hid-core.c and hid-ids.h + * 2008-12-03 Mark Lord <mlord@pobox.com> + * - add support for DealExtreme USB Radio + * 2009-01-31 Bob Ross <pigiron@gmx.com> + * - correction of stereo detection/setting + * - correction of signal strength indicator scaling + * 2009-01-31 Rick Bronson <rick@efn.org> + * Tobias Lorenz <tobias.lorenz@gmx.net> + * - add LED status output + * - get HW/SW version from scratchpad + * 2009-06-16 Edouard Lafargue <edouard@lafargue.name> + * Version 1.0.10 + * - add support for interrupt mode for RDS endpoint, + * instead of polling. + * Improves RDS reception significantly + */ + + +/* kernel includes */ +#include "radio-si470x.h" + + + +/************************************************************************** + * Module Parameters + **************************************************************************/ + +/* Spacing (kHz) */ +/* 0: 200 kHz (USA, Australia) */ +/* 1: 100 kHz (Europe, Japan) */ +/* 2: 50 kHz */ +static unsigned short space = 2; +module_param(space, ushort, 0444); +MODULE_PARM_DESC(space, "Spacing: 0=200kHz 1=100kHz *2=50kHz*"); + +/* Bottom of Band (MHz) */ +/* 0: 87.5 - 108 MHz (USA, Europe)*/ +/* 1: 76 - 108 MHz (Japan wide band) */ +/* 2: 76 - 90 MHz (Japan) */ +static unsigned short band = 1; +module_param(band, ushort, 0444); +MODULE_PARM_DESC(band, "Band: 0=87.5..108MHz *1=76..108MHz* 2=76..90MHz"); + +/* De-emphasis */ +/* 0: 75 us (USA) */ +/* 1: 50 us (Europe, Australia, Japan) */ +static unsigned short de = 1; +module_param(de, ushort, 0444); +MODULE_PARM_DESC(de, "De-emphasis: 0=75us *1=50us*"); + +/* Tune timeout */ +static unsigned int tune_timeout = 3000; +module_param(tune_timeout, uint, 0644); +MODULE_PARM_DESC(tune_timeout, "Tune timeout: *3000*"); + +/* Seek timeout */ +static unsigned int seek_timeout = 5000; +module_param(seek_timeout, uint, 0644); +MODULE_PARM_DESC(seek_timeout, "Seek timeout: *5000*"); + + + +/************************************************************************** + * Generic Functions + **************************************************************************/ + +/* + * si470x_set_chan - set the channel + */ +static int si470x_set_chan(struct si470x_device *radio, unsigned short chan) +{ + int retval; + unsigned long timeout; + bool timed_out = 0; + + /* start tuning */ + radio->registers[CHANNEL] &= ~CHANNEL_CHAN; + radio->registers[CHANNEL] |= CHANNEL_TUNE | chan; + retval = si470x_set_register(radio, CHANNEL); + if (retval < 0) + goto done; + + /* wait till tune operation has completed */ + timeout = jiffies + msecs_to_jiffies(tune_timeout); + do { + retval = si470x_get_register(radio, STATUSRSSI); + if (retval < 0) + goto stop; + timed_out = time_after(jiffies, timeout); + } while (((radio->registers[STATUSRSSI] & STATUSRSSI_STC) == 0) && + (!timed_out)); + if ((radio->registers[STATUSRSSI] & STATUSRSSI_STC) == 0) + dev_warn(&radio->videodev->dev, "tune does not complete\n"); + if (timed_out) + dev_warn(&radio->videodev->dev, + "tune timed out after %u ms\n", tune_timeout); + +stop: + /* stop tuning */ + radio->registers[CHANNEL] &= ~CHANNEL_TUNE; + retval = si470x_set_register(radio, CHANNEL); + +done: + return retval; +} + + +/* + * si470x_get_freq - get the frequency + */ +static int si470x_get_freq(struct si470x_device *radio, unsigned int *freq) +{ + unsigned int spacing, band_bottom; + unsigned short chan; + int retval; + + /* Spacing (kHz) */ + switch ((radio->registers[SYSCONFIG2] & SYSCONFIG2_SPACE) >> 4) { + /* 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 ((radio->registers[SYSCONFIG2] & SYSCONFIG2_BAND) >> 6) { + /* 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 */ + retval = si470x_get_register(radio, READCHAN); + chan = radio->registers[READCHAN] & READCHAN_READCHAN; + + /* Frequency (MHz) = Spacing (kHz) x Channel + Bottom of Band (MHz) */ + *freq = chan * spacing + band_bottom; + + return retval; +} + + +/* + * si470x_set_freq - set the frequency + */ +int si470x_set_freq(struct si470x_device *radio, unsigned int freq) +{ + unsigned int spacing, band_bottom; + unsigned short chan; + + /* Spacing (kHz) */ + switch ((radio->registers[SYSCONFIG2] & SYSCONFIG2_SPACE) >> 4) { + /* 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 ((radio->registers[SYSCONFIG2] & SYSCONFIG2_BAND) >> 6) { + /* 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) */ + chan = (freq - band_bottom) / spacing; + + return si470x_set_chan(radio, chan); +} + + +/* + * si470x_set_seek - set seek + */ +static int si470x_set_seek(struct si470x_device *radio, + unsigned int wrap_around, unsigned int seek_upward) +{ + int retval = 0; + unsigned long timeout; + bool timed_out = 0; + + /* start seeking */ + radio->registers[POWERCFG] |= POWERCFG_SEEK; + if (wrap_around == 1) + radio->registers[POWERCFG] &= ~POWERCFG_SKMODE; + else + radio->registers[POWERCFG] |= POWERCFG_SKMODE; + if (seek_upward == 1) + radio->registers[POWERCFG] |= POWERCFG_SEEKUP; + else + radio->registers[POWERCFG] &= ~POWERCFG_SEEKUP; + retval = si470x_set_register(radio, POWERCFG); + if (retval < 0) + goto done; + + /* wait till seek operation has completed */ + timeout = jiffies + msecs_to_jiffies(seek_timeout); + do { + retval = si470x_get_register(radio, STATUSRSSI); + if (retval < 0) + goto stop; + timed_out = time_after(jiffies, timeout); + } while (((radio->registers[STATUSRSSI] & STATUSRSSI_STC) == 0) && + (!timed_out)); + if ((radio->registers[STATUSRSSI] & STATUSRSSI_STC) == 0) + dev_warn(&radio->videodev->dev, "seek does not complete\n"); + if (radio->registers[STATUSRSSI] & STATUSRSSI_SF) + dev_warn(&radio->videodev->dev, + "seek failed / band limit reached\n"); + if (timed_out) + dev_warn(&radio->videodev->dev, + "seek timed out after %u ms\n", seek_timeout); + +stop: + /* stop seeking */ + radio->registers[POWERCFG] &= ~POWERCFG_SEEK; + retval = si470x_set_register(radio, POWERCFG); + +done: + /* try again, if timed out */ + if ((retval == 0) && timed_out) + retval = -EAGAIN; + + return retval; +} + + +/* + * si470x_start - switch on radio + */ +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) + goto done; + + /* sysconfig 1 */ + radio->registers[SYSCONFIG1] = SYSCONFIG1_DE; + retval = si470x_set_register(radio, SYSCONFIG1); + if (retval < 0) + goto done; + + /* sysconfig 2 */ + radio->registers[SYSCONFIG2] = + (0x3f << 8) | /* SEEKTH */ + ((band << 6) & SYSCONFIG2_BAND) | /* BAND */ + ((space << 4) & SYSCONFIG2_SPACE) | /* SPACE */ + 15; /* VOLUME (max) */ + retval = si470x_set_register(radio, SYSCONFIG2); + if (retval < 0) + goto done; + + /* reset last channel */ + retval = si470x_set_chan(radio, + radio->registers[CHANNEL] & CHANNEL_CHAN); + +done: + return retval; +} + + +/* + * si470x_stop - switch off radio + */ +int si470x_stop(struct si470x_device *radio) +{ + int retval; + + /* sysconfig 1 */ + radio->registers[SYSCONFIG1] &= ~SYSCONFIG1_RDS; + retval = si470x_set_register(radio, SYSCONFIG1); + if (retval < 0) + goto done; + + /* powercfg */ + radio->registers[POWERCFG] &= ~POWERCFG_DMUTE; + /* POWERCFG_ENABLE has to automatically go low */ + radio->registers[POWERCFG] |= POWERCFG_ENABLE | POWERCFG_DISABLE; + retval = si470x_set_register(radio, POWERCFG); + +done: + return retval; +} + + +/* + * si470x_rds_on - switch on rds reception + */ +int si470x_rds_on(struct si470x_device *radio) +{ + int retval; + + /* sysconfig 1 */ + mutex_lock(&radio->lock); + radio->registers[SYSCONFIG1] |= SYSCONFIG1_RDS; + retval = si470x_set_register(radio, SYSCONFIG1); + if (retval < 0) + radio->registers[SYSCONFIG1] &= ~SYSCONFIG1_RDS; + mutex_unlock(&radio->lock); + + return retval; +} + + + +/************************************************************************** + * Video4Linux Interface + **************************************************************************/ + +/* + * si470x_vidioc_queryctrl - enumerate control items + */ +static int si470x_vidioc_queryctrl(struct file *file, void *priv, + struct v4l2_queryctrl *qc) +{ + struct si470x_device *radio = video_drvdata(file); + int retval = -EINVAL; + + /* abort if qc->id is below V4L2_CID_BASE */ + if (qc->id < V4L2_CID_BASE) + goto done; + + /* search video control */ + switch (qc->id) { + case V4L2_CID_AUDIO_VOLUME: + return v4l2_ctrl_query_fill(qc, 0, 15, 1, 15); + case V4L2_CID_AUDIO_MUTE: + return v4l2_ctrl_query_fill(qc, 0, 1, 1, 1); + } + + /* disable unsupported base controls */ + /* to satisfy kradio and such apps */ + if ((retval == -EINVAL) && (qc->id < V4L2_CID_LASTP1)) { + qc->flags = V4L2_CTRL_FLAG_DISABLED; + retval = 0; + } + +done: + if (retval < 0) + dev_warn(&radio->videodev->dev, + "query controls failed with %d\n", retval); + return retval; +} + + +/* + * si470x_vidioc_g_ctrl - get the value of a control + */ +static int si470x_vidioc_g_ctrl(struct file *file, void *priv, + struct v4l2_control *ctrl) +{ + struct si470x_device *radio = video_drvdata(file); + int retval = 0; + + /* safety checks */ + retval = si470x_disconnect_check(radio); + if (retval) + goto done; + + 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; + default: + retval = -EINVAL; + } + +done: + if (retval < 0) + dev_warn(&radio->videodev->dev, + "get control failed with %d\n", retval); + return retval; +} + + +/* + * si470x_vidioc_s_ctrl - set the value of a control + */ +static int si470x_vidioc_s_ctrl(struct file *file, void *priv, + struct v4l2_control *ctrl) +{ + struct si470x_device *radio = video_drvdata(file); + int retval = 0; + + /* safety checks */ + retval = si470x_disconnect_check(radio); + if (retval) + goto done; + + switch (ctrl->id) { + case V4L2_CID_AUDIO_VOLUME: + radio->registers[SYSCONFIG2] &= ~SYSCONFIG2_VOLUME; + radio->registers[SYSCONFIG2] |= ctrl->value; + retval = si470x_set_register(radio, SYSCONFIG2); + break; + case V4L2_CID_AUDIO_MUTE: + if (ctrl->value == 1) + radio->registers[POWERCFG] &= ~POWERCFG_DMUTE; + else + radio->registers[POWERCFG] |= POWERCFG_DMUTE; + retval = si470x_set_register(radio, POWERCFG); + break; + default: + retval = -EINVAL; + } + +done: + if (retval < 0) + dev_warn(&radio->videodev->dev, + "set control failed with %d\n", retval); + return retval; +} + + +/* + * si470x_vidioc_g_audio - get audio attributes + */ +static int si470x_vidioc_g_audio(struct file *file, void *priv, + struct v4l2_audio *audio) +{ + /* driver constants */ + audio->index = 0; + strcpy(audio->name, "Radio"); + audio->capability = V4L2_AUDCAP_STEREO; + audio->mode = 0; + + return 0; +} + + +/* + * si470x_vidioc_g_tuner - get tuner attributes + */ +static int si470x_vidioc_g_tuner(struct file *file, void *priv, + struct v4l2_tuner *tuner) +{ + struct si470x_device *radio = video_drvdata(file); + int retval = 0; + + /* safety checks */ + retval = si470x_disconnect_check(radio); + if (retval) + goto done; + + if (tuner->index != 0) { + retval = -EINVAL; + goto done; + } + + retval = si470x_get_register(radio, STATUSRSSI); + if (retval < 0) + goto done; + + /* driver constants */ + strcpy(tuner->name, "FM"); + tuner->type = V4L2_TUNER_RADIO; +#if defined(CONFIG_USB_SI470X) || defined(CONFIG_USB_SI470X_MODULE) + tuner->capability = V4L2_TUNER_CAP_LOW | V4L2_TUNER_CAP_STEREO | + V4L2_TUNER_CAP_RDS; +#else + tuner->capability = V4L2_TUNER_CAP_LOW | V4L2_TUNER_CAP_STEREO; +#endif + + /* range limits */ + switch ((radio->registers[SYSCONFIG2] & SYSCONFIG2_BAND) >> 6) { + /* 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; + }; + + /* stereo indicator == stereo (instead of mono) */ + if ((radio->registers[STATUSRSSI] & STATUSRSSI_ST) == 0) + tuner->rxsubchans = V4L2_TUNER_SUB_MONO; + else + tuner->rxsubchans = V4L2_TUNER_SUB_MONO | V4L2_TUNER_SUB_STEREO; +#if defined(CONFIG_USB_SI470X) || defined(CONFIG_USB_SI470X_MODULE) + /* If there is a reliable method of detecting an RDS channel, + then this code should check for that before setting this + RDS subchannel. */ + tuner->rxsubchans |= V4L2_TUNER_SUB_RDS; +#endif + + /* mono/stereo selector */ + if ((radio->registers[POWERCFG] & POWERCFG_MONO) == 0) + tuner->audmode = V4L2_TUNER_MODE_STEREO; + else + tuner->audmode = V4L2_TUNER_MODE_MONO; + + /* min is worst, max is best; signal:0..0xffff; rssi: 0..0xff */ + /* measured in units of db쨉V in 1 db increments (max at ~75 db쨉V) */ + tuner->signal = (radio->registers[STATUSRSSI] & STATUSRSSI_RSSI); + /* the ideal factor is 0xffff/75 = 873,8 */ + tuner->signal = (tuner->signal * 873) + (8 * tuner->signal / 10); + + /* automatic frequency control: -1: freq to low, 1 freq to high */ + /* AFCRL does only indicate that freq. differs, not if too low/high */ + tuner->afc = (radio->registers[STATUSRSSI] & STATUSRSSI_AFCRL) ? 1 : 0; + +done: + if (retval < 0) + dev_warn(&radio->videodev->dev, + "get tuner failed with %d\n", retval); + return retval; +} + + +/* + * si470x_vidioc_s_tuner - set tuner attributes + */ +static int si470x_vidioc_s_tuner(struct file *file, void *priv, + struct v4l2_tuner *tuner) +{ + struct si470x_device *radio = video_drvdata(file); + int retval = -EINVAL; + + /* safety checks */ + retval = si470x_disconnect_check(radio); + if (retval) + goto done; + + if (tuner->index != 0) + goto done; + + /* mono/stereo selector */ + switch (tuner->audmode) { + case V4L2_TUNER_MODE_MONO: + radio->registers[POWERCFG] |= POWERCFG_MONO; /* force mono */ + break; + case V4L2_TUNER_MODE_STEREO: + radio->registers[POWERCFG] &= ~POWERCFG_MONO; /* try stereo */ + break; + default: + goto done; + } + + retval = si470x_set_register(radio, POWERCFG); + +done: + if (retval < 0) + dev_warn(&radio->videodev->dev, + "set tuner failed with %d\n", retval); + return retval; +} + + +/* + * si470x_vidioc_g_frequency - get tuner or modulator radio frequency + */ +static int si470x_vidioc_g_frequency(struct file *file, void *priv, + struct v4l2_frequency *freq) +{ + struct si470x_device *radio = video_drvdata(file); + int retval = 0; + + /* safety checks */ + retval = si470x_disconnect_check(radio); + if (retval) + goto done; + + if (freq->tuner != 0) { + retval = -EINVAL; + goto done; + } + + freq->type = V4L2_TUNER_RADIO; + retval = si470x_get_freq(radio, &freq->frequency); + +done: + if (retval < 0) + dev_warn(&radio->videodev->dev, + "get frequency failed with %d\n", retval); + return retval; +} + + +/* + * si470x_vidioc_s_frequency - set tuner or modulator radio frequency + */ +static int si470x_vidioc_s_frequency(struct file *file, void *priv, + struct v4l2_frequency *freq) +{ + struct si470x_device *radio = video_drvdata(file); + int retval = 0; + + /* safety checks */ + retval = si470x_disconnect_check(radio); + if (retval) + goto done; + + if (freq->tuner != 0) { + retval = -EINVAL; + goto done; + } + + retval = si470x_set_freq(radio, freq->frequency); + +done: + if (retval < 0) + dev_warn(&radio->videodev->dev, + "set frequency failed with %d\n", retval); + return retval; +} + + +/* + * si470x_vidioc_s_hw_freq_seek - set hardware frequency seek + */ +static int si470x_vidioc_s_hw_freq_seek(struct file *file, void *priv, + struct v4l2_hw_freq_seek *seek) +{ + struct si470x_device *radio = video_drvdata(file); + int retval = 0; + + /* safety checks */ + retval = si470x_disconnect_check(radio); + if (retval) + goto done; + + if (seek->tuner != 0) { + retval = -EINVAL; + goto done; + } + + retval = si470x_set_seek(radio, seek->wrap_around, seek->seek_upward); + +done: + if (retval < 0) + dev_warn(&radio->videodev->dev, + "set hardware frequency seek failed with %d\n", retval); + return retval; +} + + +/* + * si470x_ioctl_ops - video device ioctl operations + */ +static const struct v4l2_ioctl_ops si470x_ioctl_ops = { + .vidioc_querycap = si470x_vidioc_querycap, + .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_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, + .vidioc_s_hw_freq_seek = si470x_vidioc_s_hw_freq_seek, +}; + + +/* + * si470x_viddev_template - video device interface + */ +struct video_device si470x_viddev_template = { + .fops = &si470x_fops, + .name = DRIVER_NAME, + .release = video_device_release, + .ioctl_ops = &si470x_ioctl_ops, +}; diff --git a/drivers/media/radio/si470x/radio-si470x-i2c.c b/drivers/media/radio/si470x/radio-si470x-i2c.c new file mode 100644 index 00000000000..2d53b6a9409 --- /dev/null +++ b/drivers/media/radio/si470x/radio-si470x-i2c.c @@ -0,0 +1,401 @@ +/* + * drivers/media/radio/si470x/radio-si470x-i2c.c + * + * I2C driver for radios with Silicon Labs Si470x FM Radio Receivers + * + * Copyright (c) 2009 Samsung Electronics Co.Ltd + * Author: Joonyoung Shim <jy0922.shim@samsung.com> + * + * 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 + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * 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 + */ + + +/* + * ToDo: + * - RDS support + */ + + +/* driver definitions */ +#define DRIVER_AUTHOR "Joonyoung Shim <jy0922.shim@samsung.com>"; +#define DRIVER_KERNEL_VERSION KERNEL_VERSION(1, 0, 0) +#define DRIVER_CARD "Silicon Labs Si470x FM Radio Receiver" +#define DRIVER_DESC "I2C radio driver for Si470x FM Radio Receivers" +#define DRIVER_VERSION "1.0.0" + +/* kernel includes */ +#include <linux/i2c.h> +#include <linux/delay.h> + +#include "radio-si470x.h" + + +/* I2C Device ID List */ +static const struct i2c_device_id si470x_i2c_id[] = { + /* Generic Entry */ + { "si470x", 0 }, + /* Terminating entry */ + { } +}; +MODULE_DEVICE_TABLE(i2c, si470x_i2c_id); + + + +/************************************************************************** + * Module Parameters + **************************************************************************/ + +/* Radio Nr */ +static int radio_nr = -1; +module_param(radio_nr, int, 0444); +MODULE_PARM_DESC(radio_nr, "Radio Nr"); + + + +/************************************************************************** + * I2C Definitions + **************************************************************************/ + +/* Write starts with the upper byte of register 0x02 */ +#define WRITE_REG_NUM 8 +#define WRITE_INDEX(i) (i + 0x02) + +/* Read starts with the upper byte of register 0x0a */ +#define READ_REG_NUM RADIO_REGISTER_NUM +#define READ_INDEX(i) ((i + RADIO_REGISTER_NUM - 0x0a) % READ_REG_NUM) + + + +/************************************************************************** + * General Driver Functions - REGISTERs + **************************************************************************/ + +/* + * si470x_get_register - read register + */ +int si470x_get_register(struct si470x_device *radio, int regnr) +{ + u16 buf[READ_REG_NUM]; + struct i2c_msg msgs[1] = { + { radio->client->addr, I2C_M_RD, sizeof(u16) * READ_REG_NUM, + (void *)buf }, + }; + + if (i2c_transfer(radio->client->adapter, msgs, 1) != 1) + return -EIO; + + radio->registers[regnr] = __be16_to_cpu(buf[READ_INDEX(regnr)]); + + return 0; +} + + +/* + * si470x_set_register - write register + */ +int si470x_set_register(struct si470x_device *radio, int regnr) +{ + int i; + u16 buf[WRITE_REG_NUM]; + struct i2c_msg msgs[1] = { + { radio->client->addr, 0, sizeof(u16) * WRITE_REG_NUM, + (void *)buf }, + }; + + for (i = 0; i < WRITE_REG_NUM; i++) + buf[i] = __cpu_to_be16(radio->registers[WRITE_INDEX(i)]); + + if (i2c_transfer(radio->client->adapter, msgs, 1) != 1) + return -EIO; + + return 0; +} + + + +/************************************************************************** + * General Driver Functions - ENTIRE REGISTERS + **************************************************************************/ + +/* + * si470x_get_all_registers - read entire registers + */ +static int si470x_get_all_registers(struct si470x_device *radio) +{ + int i; + u16 buf[READ_REG_NUM]; + struct i2c_msg msgs[1] = { + { radio->client->addr, I2C_M_RD, sizeof(u16) * READ_REG_NUM, + (void *)buf }, + }; + + if (i2c_transfer(radio->client->adapter, msgs, 1) != 1) + return -EIO; + + for (i = 0; i < READ_REG_NUM; i++) + radio->registers[i] = __be16_to_cpu(buf[READ_INDEX(i)]); + + return 0; +} + + + +/************************************************************************** + * General Driver Functions - DISCONNECT_CHECK + **************************************************************************/ + +/* + * si470x_disconnect_check - check whether radio disconnects + */ +int si470x_disconnect_check(struct si470x_device *radio) +{ + return 0; +} + + + +/************************************************************************** + * File Operations Interface + **************************************************************************/ + +/* + * si470x_fops_open - file open + */ +static int si470x_fops_open(struct file *file) +{ + struct si470x_device *radio = video_drvdata(file); + int retval = 0; + + mutex_lock(&radio->lock); + radio->users++; + + if (radio->users == 1) + /* start radio */ + retval = si470x_start(radio); + + mutex_unlock(&radio->lock); + + return retval; +} + + +/* + * si470x_fops_release - file release + */ +static int si470x_fops_release(struct file *file) +{ + struct si470x_device *radio = video_drvdata(file); + int retval = 0; + + /* safety check */ + if (!radio) + return -ENODEV; + + mutex_lock(&radio->lock); + radio->users--; + if (radio->users == 0) + /* stop radio */ + retval = si470x_stop(radio); + + mutex_unlock(&radio->lock); + + return retval; +} + + +/* + * si470x_fops - file operations interface + */ +const struct v4l2_file_operations si470x_fops = { + .owner = THIS_MODULE, + .ioctl = video_ioctl2, + .open = si470x_fops_open, + .release = si470x_fops_release, +}; + + + +/************************************************************************** + * Video4Linux Interface + **************************************************************************/ + +/* + * si470x_vidioc_querycap - query device capabilities + */ +int si470x_vidioc_querycap(struct file *file, void *priv, + struct v4l2_capability *capability) +{ + strlcpy(capability->driver, DRIVER_NAME, sizeof(capability->driver)); + strlcpy(capability->card, DRIVER_CARD, sizeof(capability->card)); + capability->version = DRIVER_KERNEL_VERSION; + capability->capabilities = V4L2_CAP_HW_FREQ_SEEK | + V4L2_CAP_TUNER | V4L2_CAP_RADIO; + + return 0; +} + + + +/************************************************************************** + * I2C Interface + **************************************************************************/ + +/* + * si470x_i2c_probe - probe for the device + */ +static int __devinit si470x_i2c_probe(struct i2c_client *client, + const struct i2c_device_id *id) +{ + struct si470x_device *radio; + int retval = 0; + unsigned char version_warning = 0; + + /* private data allocation and initialization */ + radio = kzalloc(sizeof(struct si470x_device), GFP_KERNEL); + if (!radio) { + retval = -ENOMEM; + goto err_initial; + } + radio->users = 0; + radio->client = client; + mutex_init(&radio->lock); + + /* video device allocation and initialization */ + radio->videodev = video_device_alloc(); + if (!radio->videodev) { + retval = -ENOMEM; + goto err_radio; + } + memcpy(radio->videodev, &si470x_viddev_template, + sizeof(si470x_viddev_template)); + video_set_drvdata(radio->videodev, radio); + + /* power up : need 110ms */ + radio->registers[POWERCFG] = POWERCFG_ENABLE; + if (si470x_set_register(radio, POWERCFG) < 0) { + retval = -EIO; + goto err_all; + } + msleep(110); + + /* get device and chip versions */ + if (si470x_get_all_registers(radio) < 0) { + retval = -EIO; + goto err_video; + } + dev_info(&client->dev, "DeviceID=0x%4.4hx ChipID=0x%4.4hx\n", + radio->registers[DEVICEID], radio->registers[CHIPID]); + if ((radio->registers[CHIPID] & CHIPID_FIRMWARE) < RADIO_FW_VERSION) { + dev_warn(&client->dev, + "This driver is known to work with " + "firmware version %hu,\n", RADIO_FW_VERSION); + dev_warn(&client->dev, + "but the device has firmware version %hu.\n", + radio->registers[CHIPID] & CHIPID_FIRMWARE); + version_warning = 1; + } + + /* give out version warning */ + if (version_warning == 1) { + dev_warn(&client->dev, + "If you have some trouble using this driver,\n"); + dev_warn(&client->dev, + "please report to V4L ML at " + "linux-media@vger.kernel.org\n"); + } + + /* set initial frequency */ + si470x_set_freq(radio, 87.5 * FREQ_MUL); /* available in all regions */ + + /* register video device */ + retval = video_register_device(radio->videodev, VFL_TYPE_RADIO, + radio_nr); + if (retval) { + dev_warn(&client->dev, "Could not register video device\n"); + goto err_all; + } + i2c_set_clientdata(client, radio); + + return 0; +err_all: +err_video: + video_device_release(radio->videodev); +err_radio: + kfree(radio); +err_initial: + return retval; +} + + +/* + * si470x_i2c_remove - remove the device + */ +static __devexit int si470x_i2c_remove(struct i2c_client *client) +{ + struct si470x_device *radio = i2c_get_clientdata(client); + + video_unregister_device(radio->videodev); + kfree(radio); + i2c_set_clientdata(client, NULL); + + return 0; +} + + +/* + * si470x_i2c_driver - i2c driver interface + */ +static struct i2c_driver si470x_i2c_driver = { + .driver = { + .name = "si470x", + .owner = THIS_MODULE, + }, + .probe = si470x_i2c_probe, + .remove = __devexit_p(si470x_i2c_remove), + .id_table = si470x_i2c_id, +}; + + + +/************************************************************************** + * Module Interface + **************************************************************************/ + +/* + * si470x_i2c_init - module init + */ +static int __init si470x_i2c_init(void) +{ + printk(KERN_INFO DRIVER_DESC ", Version " DRIVER_VERSION "\n"); + return i2c_add_driver(&si470x_i2c_driver); +} + + +/* + * si470x_i2c_exit - module exit + */ +static void __exit si470x_i2c_exit(void) +{ + i2c_del_driver(&si470x_i2c_driver); +} + + +module_init(si470x_i2c_init); +module_exit(si470x_i2c_exit); + +MODULE_LICENSE("GPL"); +MODULE_AUTHOR(DRIVER_AUTHOR); +MODULE_DESCRIPTION(DRIVER_DESC); +MODULE_VERSION(DRIVER_VERSION); diff --git a/drivers/media/radio/si470x/radio-si470x-usb.c b/drivers/media/radio/si470x/radio-si470x-usb.c new file mode 100644 index 00000000000..f2d0e1ddb30 --- /dev/null +++ b/drivers/media/radio/si470x/radio-si470x-usb.c @@ -0,0 +1,988 @@ +/* + * drivers/media/radio/si470x/radio-si470x-usb.c + * + * USB driver for radios with Silicon Labs Si470x FM Radio Receivers + * + * Copyright (c) 2009 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 + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * 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 + */ + + +/* + * ToDo: + * - add firmware download/update support + */ + + +/* driver definitions */ +#define DRIVER_AUTHOR "Tobias Lorenz <tobias.lorenz@gmx.net>" +#define DRIVER_KERNEL_VERSION KERNEL_VERSION(1, 0, 10) +#define DRIVER_CARD "Silicon Labs Si470x FM Radio Receiver" +#define DRIVER_DESC "USB radio driver for Si470x FM Radio Receivers" +#define DRIVER_VERSION "1.0.10" + +/* kernel includes */ +#include <linux/usb.h> +#include <linux/hid.h> + +#include "radio-si470x.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) }, + /* ADS/Tech FM Radio Receiver (formerly Instant FM Music) */ + { USB_DEVICE_AND_INTERFACE_INFO(0x06e1, 0xa155, USB_CLASS_HID, 0, 0) }, + /* KWorld USB FM Radio SnapMusic Mobile 700 (FM700) */ + { USB_DEVICE_AND_INTERFACE_INFO(0x1b80, 0xd700, USB_CLASS_HID, 0, 0) }, + /* Sanei Electric, Inc. FM USB Radio (sold as DealExtreme.com PCear) */ + { USB_DEVICE_AND_INTERFACE_INFO(0x10c5, 0x819a, 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, 0444); +MODULE_PARM_DESC(radio_nr, "Radio Nr"); + +/* USB timeout */ +static unsigned int usb_timeout = 500; +module_param(usb_timeout, uint, 0644); +MODULE_PARM_DESC(usb_timeout, "USB timeout (ms): *500*"); + +/* RDS buffer blocks */ +static unsigned int rds_buf = 100; +module_param(rds_buf, uint, 0444); +MODULE_PARM_DESC(rds_buf, "RDS buffer entries: *100*"); + +/* RDS maximum block errors */ +static unsigned short max_rds_errors = 1; +/* 0 means 0 errors requiring correction */ +/* 1 means 1-2 errors requiring correction (used by original USBRadio.exe) */ +/* 2 means 3-5 errors requiring correction */ +/* 3 means 6+ errors or errors in checkword, correction not possible */ +module_param(max_rds_errors, ushort, 0644); +MODULE_PARM_DESC(max_rds_errors, "RDS maximum block errors: *1*"); + + + +/************************************************************************** + * 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 (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 (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 * RADIO_REGISTER_SIZE + 1) +#define RDS_REPORT 18 + +/* Report 19: LED state */ +#define LED_REPORT_SIZE 3 +#define LED_REPORT 19 + +/* Report 19: stream */ +#define STREAM_REPORT_SIZE 3 +#define STREAM_REPORT 19 + +/* Report 20: scratch */ +#define SCRATCH_PAGE_SIZE 63 +#define SCRATCH_REPORT_SIZE (SCRATCH_PAGE_SIZE + 1) +#define SCRATCH_REPORT 20 + +/* Reports 19-22: flash upgrade of the C8051F321 */ +#define WRITE_REPORT_SIZE 4 +#define WRITE_REPORT 19 +#define FLASH_REPORT_SIZE 64 +#define FLASH_REPORT 20 +#define CRC_REPORT_SIZE 3 +#define CRC_REPORT 21 +#define RESPONSE_REPORT_SIZE 2 +#define RESPONSE_REPORT 22 + +/* Report 23: currently unused, but can accept 60 byte reports on the HID */ +/* interrupt out endpoint 2 every 1 millisecond */ +#define UNUSED_REPORT 23 + + + +/************************************************************************** + * Software/Hardware Versions from Scratch Page + **************************************************************************/ +#define RADIO_SW_VERSION_NOT_BOOTLOADABLE 6 +#define RADIO_SW_VERSION 7 +#define RADIO_HW_VERSION 1 + + + +/************************************************************************** + * LED State Definitions + **************************************************************************/ +#define LED_COMMAND 0x35 + +#define NO_CHANGE_LED 0x00 +#define ALL_COLOR_LED 0x01 /* streaming state */ +#define BLINK_GREEN_LED 0x02 /* connect state */ +#define BLINK_RED_LED 0x04 +#define BLINK_ORANGE_LED 0x10 /* disconnect state */ +#define SOLID_GREEN_LED 0x20 /* tuning/seeking state */ +#define SOLID_RED_LED 0x40 /* bootload state */ +#define SOLID_ORANGE_LED 0x80 + + + +/************************************************************************** + * Stream State Definitions + **************************************************************************/ +#define STREAM_COMMAND 0x36 +#define STREAM_VIDPID 0x00 +#define STREAM_AUDIO 0xff + + + +/************************************************************************** + * Bootloader / Flash Commands + **************************************************************************/ + +/* unique id sent to bootloader and required to put into a bootload state */ +#define UNIQUE_BL_ID 0x34 + +/* mask for the flash data */ +#define FLASH_DATA_MASK 0x55 + +/* bootloader commands */ +#define GET_SW_VERSION_COMMAND 0x00 +#define SET_PAGE_COMMAND 0x01 +#define ERASE_PAGE_COMMAND 0x02 +#define WRITE_PAGE_COMMAND 0x03 +#define CRC_ON_PAGE_COMMAND 0x04 +#define READ_FLASH_BYTE_COMMAND 0x05 +#define RESET_DEVICE_COMMAND 0x06 +#define GET_HW_VERSION_COMMAND 0x07 +#define BLANK 0xff + +/* bootloader command responses */ +#define COMMAND_OK 0x01 +#define COMMAND_FAILED 0x02 +#define COMMAND_PENDING 0x03 + + + +/************************************************************************** + * General Driver Functions - REGISTER_REPORTs + **************************************************************************/ + +/* + * si470x_get_report - receive a HID report + */ +static int si470x_get_report(struct si470x_device *radio, void *buf, int size) +{ + unsigned char *report = (unsigned char *) buf; + int retval; + + retval = usb_control_msg(radio->usbdev, + usb_rcvctrlpipe(radio->usbdev, 0), + HID_REQ_GET_REPORT, + USB_TYPE_CLASS | USB_RECIP_INTERFACE | USB_DIR_IN, + report[0], 2, + buf, size, usb_timeout); + + if (retval < 0) + dev_warn(&radio->intf->dev, + "si470x_get_report: usb_control_msg returned %d\n", + retval); + return retval; +} + + +/* + * si470x_set_report - send a HID report + */ +static int si470x_set_report(struct si470x_device *radio, void *buf, int size) +{ + unsigned char *report = (unsigned char *) buf; + int retval; + + retval = usb_control_msg(radio->usbdev, + usb_sndctrlpipe(radio->usbdev, 0), + HID_REQ_SET_REPORT, + USB_TYPE_CLASS | USB_RECIP_INTERFACE | USB_DIR_OUT, + report[0], 2, + buf, size, usb_timeout); + + if (retval < 0) + dev_warn(&radio->intf->dev, + "si470x_set_report: usb_control_msg returned %d\n", + retval); + return retval; +} + + +/* + * si470x_get_register - read register + */ +int si470x_get_register(struct si470x_device *radio, int regnr) +{ + unsigned char buf[REGISTER_REPORT_SIZE]; + int retval; + + buf[0] = REGISTER_REPORT(regnr); + + retval = si470x_get_report(radio, (void *) &buf, sizeof(buf)); + + if (retval >= 0) + radio->registers[regnr] = get_unaligned_be16(&buf[1]); + + return (retval < 0) ? -EINVAL : 0; +} + + +/* + * si470x_set_register - write register + */ +int si470x_set_register(struct si470x_device *radio, int regnr) +{ + unsigned char buf[REGISTER_REPORT_SIZE]; + int retval; + + buf[0] = REGISTER_REPORT(regnr); + put_unaligned_be16(radio->registers[regnr], &buf[1]); + + retval = si470x_set_report(radio, (void *) &buf, sizeof(buf)); + + return (retval < 0) ? -EINVAL : 0; +} + + + +/************************************************************************** + * General Driver Functions - ENTIRE_REPORT + **************************************************************************/ + +/* + * si470x_get_all_registers - read entire registers + */ +static int si470x_get_all_registers(struct si470x_device *radio) +{ + unsigned char buf[ENTIRE_REPORT_SIZE]; + int retval; + unsigned char regnr; + + buf[0] = ENTIRE_REPORT; + + retval = si470x_get_report(radio, (void *) &buf, sizeof(buf)); + + if (retval >= 0) + for (regnr = 0; regnr < RADIO_REGISTER_NUM; regnr++) + radio->registers[regnr] = get_unaligned_be16( + &buf[regnr * RADIO_REGISTER_SIZE + 1]); + + return (retval < 0) ? -EINVAL : 0; +} + + + +/************************************************************************** + * General Driver Functions - LED_REPORT + **************************************************************************/ + +/* + * si470x_set_led_state - sets the led state + */ +static int si470x_set_led_state(struct si470x_device *radio, + unsigned char led_state) +{ + unsigned char buf[LED_REPORT_SIZE]; + int retval; + + buf[0] = LED_REPORT; + buf[1] = LED_COMMAND; + buf[2] = led_state; + + retval = si470x_set_report(radio, (void *) &buf, sizeof(buf)); + + return (retval < 0) ? -EINVAL : 0; +} + + + +/************************************************************************** + * General Driver Functions - SCRATCH_REPORT + **************************************************************************/ + +/* + * si470x_get_scratch_versions - gets the scratch page and version infos + */ +static int si470x_get_scratch_page_versions(struct si470x_device *radio) +{ + unsigned char buf[SCRATCH_REPORT_SIZE]; + int retval; + + buf[0] = SCRATCH_REPORT; + + retval = si470x_get_report(radio, (void *) &buf, sizeof(buf)); + + if (retval < 0) + dev_warn(&radio->intf->dev, "si470x_get_scratch: " + "si470x_get_report returned %d\n", retval); + else { + radio->software_version = buf[1]; + radio->hardware_version = buf[2]; + } + + return (retval < 0) ? -EINVAL : 0; +} + + + +/************************************************************************** + * General Driver Functions - DISCONNECT_CHECK + **************************************************************************/ + +/* + * si470x_disconnect_check - check whether radio disconnects + */ +int si470x_disconnect_check(struct si470x_device *radio) +{ + if (radio->disconnected) + return -EIO; + else + return 0; +} + + + +/************************************************************************** + * RDS Driver Functions + **************************************************************************/ + +/* + * si470x_int_in_callback - rds callback and processing function + * + * TODO: do we need to use mutex locks in some sections? + */ +static void si470x_int_in_callback(struct urb *urb) +{ + struct si470x_device *radio = urb->context; + unsigned char buf[RDS_REPORT_SIZE]; + int retval; + unsigned char regnr; + unsigned char blocknum; + unsigned short bler; /* rds block errors */ + unsigned short rds; + unsigned char tmpbuf[3]; + + if (urb->status) { + if (urb->status == -ENOENT || + urb->status == -ECONNRESET || + urb->status == -ESHUTDOWN) { + return; + } else { + dev_warn(&radio->intf->dev, + "non-zero urb status (%d)\n", urb->status); + goto resubmit; /* Maybe we can recover. */ + } + } + + /* safety checks */ + if (radio->disconnected) + return; + if ((radio->registers[SYSCONFIG1] & SYSCONFIG1_RDS) == 0) + goto resubmit; + + if (urb->actual_length > 0) { + /* Update RDS registers with URB data */ + buf[0] = RDS_REPORT; + for (regnr = 0; regnr < RDS_REGISTER_NUM; regnr++) + radio->registers[STATUSRSSI + regnr] = + get_unaligned_be16(&radio->int_in_buffer[ + regnr * RADIO_REGISTER_SIZE + 1]); + /* get rds blocks */ + if ((radio->registers[STATUSRSSI] & STATUSRSSI_RDSR) == 0) { + /* No RDS group ready, better luck next time */ + goto resubmit; + } + if ((radio->registers[STATUSRSSI] & STATUSRSSI_RDSS) == 0) { + /* RDS decoder not synchronized */ + goto resubmit; + } + 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; + }; + + /* Fill the V4L2 RDS buffer */ + put_unaligned_le16(rds, &tmpbuf); + tmpbuf[2] = blocknum; /* offset name */ + tmpbuf[2] |= blocknum << 3; /* received offset */ + if (bler > max_rds_errors) + tmpbuf[2] |= 0x80; /* uncorrectable errors */ + else if (bler > 0) + tmpbuf[2] |= 0x40; /* corrected error(s) */ + + /* copy RDS block to internal buffer */ + memcpy(&radio->buffer[radio->wr_index], &tmpbuf, 3); + radio->wr_index += 3; + + /* wrap write pointer */ + if (radio->wr_index >= radio->buf_size) + radio->wr_index = 0; + + /* check for overflow */ + if (radio->wr_index == radio->rd_index) { + /* increment and wrap read pointer */ + radio->rd_index += 3; + if (radio->rd_index >= radio->buf_size) + radio->rd_index = 0; + } + } + if (radio->wr_index != radio->rd_index) + wake_up_interruptible(&radio->read_queue); + } + +resubmit: + /* Resubmit if we're still running. */ + if (radio->int_in_running && radio->usbdev) { + retval = usb_submit_urb(radio->int_in_urb, GFP_ATOMIC); + if (retval) { + dev_warn(&radio->intf->dev, + "resubmitting urb failed (%d)", retval); + radio->int_in_running = 0; + } + } +} + + + +/************************************************************************** + * File Operations Interface + **************************************************************************/ + +/* + * si470x_fops_read - read RDS data + */ +static ssize_t si470x_fops_read(struct file *file, char __user *buf, + size_t count, loff_t *ppos) +{ + struct si470x_device *radio = video_drvdata(file); + int retval = 0; + unsigned int block_count = 0; + + /* switch on rds reception */ + if ((radio->registers[SYSCONFIG1] & SYSCONFIG1_RDS) == 0) + si470x_rds_on(radio); + + /* block if no new data available */ + while (radio->wr_index == radio->rd_index) { + if (file->f_flags & O_NONBLOCK) { + retval = -EWOULDBLOCK; + goto done; + } + if (wait_event_interruptible(radio->read_queue, + radio->wr_index != radio->rd_index) < 0) { + retval = -EINTR; + goto done; + } + } + + /* calculate block count from byte count */ + count /= 3; + + /* copy RDS block out of internal buffer and to user buffer */ + mutex_lock(&radio->lock); + while (block_count < count) { + if (radio->rd_index == radio->wr_index) + break; + + /* always transfer rds complete blocks */ + if (copy_to_user(buf, &radio->buffer[radio->rd_index], 3)) + /* retval = -EFAULT; */ + break; + + /* increment and wrap read pointer */ + radio->rd_index += 3; + if (radio->rd_index >= radio->buf_size) + radio->rd_index = 0; + + /* increment counters */ + block_count++; + buf += 3; + retval += 3; + } + mutex_unlock(&radio->lock); + +done: + return retval; +} + + +/* + * si470x_fops_poll - poll RDS data + */ +static unsigned int si470x_fops_poll(struct file *file, + struct poll_table_struct *pts) +{ + struct si470x_device *radio = video_drvdata(file); + int retval = 0; + + /* switch on rds reception */ + if ((radio->registers[SYSCONFIG1] & SYSCONFIG1_RDS) == 0) + si470x_rds_on(radio); + + poll_wait(file, &radio->read_queue, pts); + + if (radio->rd_index != radio->wr_index) + retval = POLLIN | POLLRDNORM; + + return retval; +} + + +/* + * si470x_fops_open - file open + */ +static int si470x_fops_open(struct file *file) +{ + struct si470x_device *radio = video_drvdata(file); + int retval; + + lock_kernel(); + radio->users++; + + retval = usb_autopm_get_interface(radio->intf); + if (retval < 0) { + radio->users--; + retval = -EIO; + goto done; + } + + if (radio->users == 1) { + /* start radio */ + retval = si470x_start(radio); + if (retval < 0) { + usb_autopm_put_interface(radio->intf); + goto done; + } + + /* initialize interrupt urb */ + usb_fill_int_urb(radio->int_in_urb, radio->usbdev, + usb_rcvintpipe(radio->usbdev, + radio->int_in_endpoint->bEndpointAddress), + radio->int_in_buffer, + le16_to_cpu(radio->int_in_endpoint->wMaxPacketSize), + si470x_int_in_callback, + radio, + radio->int_in_endpoint->bInterval); + + radio->int_in_running = 1; + mb(); + + retval = usb_submit_urb(radio->int_in_urb, GFP_KERNEL); + if (retval) { + dev_info(&radio->intf->dev, + "submitting int urb failed (%d)\n", retval); + radio->int_in_running = 0; + usb_autopm_put_interface(radio->intf); + } + } + +done: + unlock_kernel(); + return retval; +} + + +/* + * si470x_fops_release - file release + */ +static int si470x_fops_release(struct file *file) +{ + struct si470x_device *radio = video_drvdata(file); + int retval = 0; + + /* safety check */ + if (!radio) { + retval = -ENODEV; + goto done; + } + + mutex_lock(&radio->disconnect_lock); + radio->users--; + if (radio->users == 0) { + /* shutdown interrupt handler */ + if (radio->int_in_running) { + radio->int_in_running = 0; + if (radio->int_in_urb) + usb_kill_urb(radio->int_in_urb); + } + + if (radio->disconnected) { + video_unregister_device(radio->videodev); + kfree(radio->int_in_buffer); + kfree(radio->buffer); + kfree(radio); + goto unlock; + } + + /* cancel read processes */ + wake_up_interruptible(&radio->read_queue); + + /* stop radio */ + retval = si470x_stop(radio); + usb_autopm_put_interface(radio->intf); + } +unlock: + mutex_unlock(&radio->disconnect_lock); +done: + return retval; +} + + +/* + * si470x_fops - file operations interface + */ +const struct v4l2_file_operations si470x_fops = { + .owner = THIS_MODULE, + .read = si470x_fops_read, + .poll = si470x_fops_poll, + .ioctl = video_ioctl2, + .open = si470x_fops_open, + .release = si470x_fops_release, +}; + + + +/************************************************************************** + * Video4Linux Interface + **************************************************************************/ + +/* + * si470x_vidioc_querycap - query device capabilities + */ +int si470x_vidioc_querycap(struct file *file, void *priv, + struct v4l2_capability *capability) +{ + struct si470x_device *radio = video_drvdata(file); + + strlcpy(capability->driver, DRIVER_NAME, sizeof(capability->driver)); + strlcpy(capability->card, DRIVER_CARD, sizeof(capability->card)); + usb_make_path(radio->usbdev, capability->bus_info, + sizeof(capability->bus_info)); + capability->version = DRIVER_KERNEL_VERSION; + capability->capabilities = V4L2_CAP_HW_FREQ_SEEK | + V4L2_CAP_TUNER | V4L2_CAP_RADIO | V4L2_CAP_RDS_CAPTURE; + + return 0; +} + + + +/************************************************************************** + * 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; + struct usb_host_interface *iface_desc; + struct usb_endpoint_descriptor *endpoint; + int i, int_end_size, retval = 0; + unsigned char version_warning = 0; + + /* private data allocation and initialization */ + radio = kzalloc(sizeof(struct si470x_device), GFP_KERNEL); + if (!radio) { + retval = -ENOMEM; + goto err_initial; + } + radio->users = 0; + radio->disconnected = 0; + radio->usbdev = interface_to_usbdev(intf); + radio->intf = intf; + mutex_init(&radio->disconnect_lock); + mutex_init(&radio->lock); + + iface_desc = intf->cur_altsetting; + + /* Set up interrupt endpoint information. */ + for (i = 0; i < iface_desc->desc.bNumEndpoints; ++i) { + endpoint = &iface_desc->endpoint[i].desc; + if (((endpoint->bEndpointAddress & USB_ENDPOINT_DIR_MASK) == + USB_DIR_IN) && ((endpoint->bmAttributes & + USB_ENDPOINT_XFERTYPE_MASK) == USB_ENDPOINT_XFER_INT)) + radio->int_in_endpoint = endpoint; + } + if (!radio->int_in_endpoint) { + dev_info(&intf->dev, "could not find interrupt in endpoint\n"); + retval = -EIO; + goto err_radio; + } + + int_end_size = le16_to_cpu(radio->int_in_endpoint->wMaxPacketSize); + + radio->int_in_buffer = kmalloc(int_end_size, GFP_KERNEL); + if (!radio->int_in_buffer) { + dev_info(&intf->dev, "could not allocate int_in_buffer"); + retval = -ENOMEM; + goto err_radio; + } + + radio->int_in_urb = usb_alloc_urb(0, GFP_KERNEL); + if (!radio->int_in_urb) { + dev_info(&intf->dev, "could not allocate int_in_urb"); + retval = -ENOMEM; + goto err_intbuffer; + } + + /* video device allocation and initialization */ + radio->videodev = video_device_alloc(); + if (!radio->videodev) { + retval = -ENOMEM; + goto err_intbuffer; + } + memcpy(radio->videodev, &si470x_viddev_template, + sizeof(si470x_viddev_template)); + video_set_drvdata(radio->videodev, radio); + + /* get device and chip versions */ + if (si470x_get_all_registers(radio) < 0) { + retval = -EIO; + goto err_video; + } + dev_info(&intf->dev, "DeviceID=0x%4.4hx ChipID=0x%4.4hx\n", + radio->registers[DEVICEID], radio->registers[CHIPID]); + if ((radio->registers[CHIPID] & CHIPID_FIRMWARE) < RADIO_FW_VERSION) { + dev_warn(&intf->dev, + "This driver is known to work with " + "firmware version %hu,\n", RADIO_FW_VERSION); + dev_warn(&intf->dev, + "but the device has firmware version %hu.\n", + radio->registers[CHIPID] & CHIPID_FIRMWARE); + version_warning = 1; + } + + /* get software and hardware versions */ + if (si470x_get_scratch_page_versions(radio) < 0) { + retval = -EIO; + goto err_video; + } + dev_info(&intf->dev, "software version %d, hardware version %d\n", + radio->software_version, radio->hardware_version); + if (radio->software_version < RADIO_SW_VERSION) { + dev_warn(&intf->dev, + "This driver is known to work with " + "software version %hu,\n", RADIO_SW_VERSION); + dev_warn(&intf->dev, + "but the device has software version %hu.\n", + radio->software_version); + version_warning = 1; + } + if (radio->hardware_version < RADIO_HW_VERSION) { + dev_warn(&intf->dev, + "This driver is known to work with " + "hardware version %hu,\n", RADIO_HW_VERSION); + dev_warn(&intf->dev, + "but the device has hardware version %hu.\n", + radio->hardware_version); + version_warning = 1; + } + + /* give out version warning */ + if (version_warning == 1) { + dev_warn(&intf->dev, + "If you have some trouble using this driver,\n"); + dev_warn(&intf->dev, + "please report to V4L ML at " + "linux-media@vger.kernel.org\n"); + } + + /* set initial frequency */ + si470x_set_freq(radio, 87.5 * FREQ_MUL); /* available in all regions */ + + /* set led to connect state */ + si470x_set_led_state(radio, BLINK_GREEN_LED); + + /* rds buffer allocation */ + radio->buf_size = rds_buf * 3; + radio->buffer = kmalloc(radio->buf_size, GFP_KERNEL); + if (!radio->buffer) { + retval = -EIO; + goto err_video; + } + + /* rds buffer configuration */ + radio->wr_index = 0; + radio->rd_index = 0; + init_waitqueue_head(&radio->read_queue); + + /* register video device */ + retval = video_register_device(radio->videodev, VFL_TYPE_RADIO, + radio_nr); + if (retval) { + dev_warn(&intf->dev, "Could not register video device\n"); + goto err_all; + } + usb_set_intfdata(intf, radio); + + return 0; +err_all: + kfree(radio->buffer); +err_video: + video_device_release(radio->videodev); +err_intbuffer: + kfree(radio->int_in_buffer); +err_radio: + kfree(radio); +err_initial: + return retval; +} + + +/* + * si470x_usb_driver_suspend - suspend the device + */ +static int si470x_usb_driver_suspend(struct usb_interface *intf, + pm_message_t message) +{ + dev_info(&intf->dev, "suspending now...\n"); + + return 0; +} + + +/* + * si470x_usb_driver_resume - resume the device + */ +static int si470x_usb_driver_resume(struct usb_interface *intf) +{ + dev_info(&intf->dev, "resuming now...\n"); + + 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); + + mutex_lock(&radio->disconnect_lock); + radio->disconnected = 1; + usb_set_intfdata(intf, NULL); + if (radio->users == 0) { + /* set led to disconnect state */ + si470x_set_led_state(radio, BLINK_ORANGE_LED); + + /* Free data structures. */ + usb_free_urb(radio->int_in_urb); + + kfree(radio->int_in_buffer); + video_unregister_device(radio->videodev); + kfree(radio->buffer); + kfree(radio); + } + mutex_unlock(&radio->disconnect_lock); +} + + +/* + * 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, + .suspend = si470x_usb_driver_suspend, + .resume = si470x_usb_driver_resume, + .id_table = si470x_usb_driver_id_table, + .supports_autosuspend = 1, +}; + + + +/************************************************************************** + * Module Interface + **************************************************************************/ + +/* + * si470x_module_init - module init + */ +static int __init si470x_module_init(void) +{ + printk(KERN_INFO DRIVER_DESC ", Version " DRIVER_VERSION "\n"); + return usb_register(&si470x_usb_driver); +} + + +/* + * si470x_module_exit - module exit + */ +static void __exit si470x_module_exit(void) +{ + usb_deregister(&si470x_usb_driver); +} + + +module_init(si470x_module_init); +module_exit(si470x_module_exit); + +MODULE_LICENSE("GPL"); +MODULE_AUTHOR(DRIVER_AUTHOR); +MODULE_DESCRIPTION(DRIVER_DESC); +MODULE_VERSION(DRIVER_VERSION); diff --git a/drivers/media/radio/si470x/radio-si470x.h b/drivers/media/radio/si470x/radio-si470x.h new file mode 100644 index 00000000000..d0af194d194 --- /dev/null +++ b/drivers/media/radio/si470x/radio-si470x.h @@ -0,0 +1,225 @@ +/* + * drivers/media/radio/si470x/radio-si470x.h + * + * Driver for radios with Silicon Labs Si470x FM Radio Receivers + * + * Copyright (c) 2009 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 + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * 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 + */ + + +/* driver definitions */ +#define DRIVER_NAME "radio-si470x" + + +/* kernel includes */ +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/init.h> +#include <linux/slab.h> +#include <linux/smp_lock.h> +#include <linux/input.h> +#include <linux/version.h> +#include <linux/videodev2.h> +#include <linux/mutex.h> +#include <media/v4l2-common.h> +#include <media/v4l2-ioctl.h> +#include <media/rds.h> +#include <asm/unaligned.h> + + + +/************************************************************************** + * Register Definitions + **************************************************************************/ +#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 */ +#define DEVICEID_PN 0xf000 /* bits 15..12: Part Number */ +#define DEVICEID_MFGID 0x0fff /* bits 11..00: Manufacturer ID */ + +#define CHIPID 1 /* Chip ID */ +#define CHIPID_REV 0xfc00 /* bits 15..10: Chip Version */ +#define CHIPID_DEV 0x0200 /* bits 09..09: Device */ +#define CHIPID_FIRMWARE 0x01ff /* bits 08..00: Firmware Version */ + +#define POWERCFG 2 /* Power Configuration */ +#define POWERCFG_DSMUTE 0x8000 /* bits 15..15: Softmute Disable */ +#define POWERCFG_DMUTE 0x4000 /* bits 14..14: Mute Disable */ +#define POWERCFG_MONO 0x2000 /* bits 13..13: Mono Select */ +#define POWERCFG_RDSM 0x0800 /* bits 11..11: RDS Mode (Si4701 only) */ +#define POWERCFG_SKMODE 0x0400 /* bits 10..10: Seek Mode */ +#define POWERCFG_SEEKUP 0x0200 /* bits 09..09: Seek Direction */ +#define POWERCFG_SEEK 0x0100 /* bits 08..08: Seek */ +#define POWERCFG_DISABLE 0x0040 /* bits 06..06: Powerup Disable */ +#define POWERCFG_ENABLE 0x0001 /* bits 00..00: Powerup Enable */ + +#define CHANNEL 3 /* Channel */ +#define CHANNEL_TUNE 0x8000 /* bits 15..15: Tune */ +#define CHANNEL_CHAN 0x03ff /* bits 09..00: Channel Select */ + +#define SYSCONFIG1 4 /* System Configuration 1 */ +#define SYSCONFIG1_RDSIEN 0x8000 /* bits 15..15: RDS Interrupt Enable (Si4701 only) */ +#define SYSCONFIG1_STCIEN 0x4000 /* bits 14..14: Seek/Tune Complete Interrupt Enable */ +#define SYSCONFIG1_RDS 0x1000 /* bits 12..12: RDS Enable (Si4701 only) */ +#define SYSCONFIG1_DE 0x0800 /* bits 11..11: De-emphasis (0=75us 1=50us) */ +#define SYSCONFIG1_AGCD 0x0400 /* bits 10..10: AGC Disable */ +#define SYSCONFIG1_BLNDADJ 0x00c0 /* bits 07..06: Stereo/Mono Blend Level Adjustment */ +#define SYSCONFIG1_GPIO3 0x0030 /* bits 05..04: General Purpose I/O 3 */ +#define SYSCONFIG1_GPIO2 0x000c /* bits 03..02: General Purpose I/O 2 */ +#define SYSCONFIG1_GPIO1 0x0003 /* bits 01..00: General Purpose I/O 1 */ + +#define SYSCONFIG2 5 /* System Configuration 2 */ +#define SYSCONFIG2_SEEKTH 0xff00 /* bits 15..08: RSSI Seek Threshold */ +#define SYSCONFIG2_BAND 0x0080 /* bits 07..06: Band Select */ +#define SYSCONFIG2_SPACE 0x0030 /* bits 05..04: Channel Spacing */ +#define SYSCONFIG2_VOLUME 0x000f /* bits 03..00: Volume */ + +#define SYSCONFIG3 6 /* System Configuration 3 */ +#define SYSCONFIG3_SMUTER 0xc000 /* bits 15..14: Softmute Attack/Recover Rate */ +#define SYSCONFIG3_SMUTEA 0x3000 /* bits 13..12: Softmute Attenuation */ +#define SYSCONFIG3_SKSNR 0x00f0 /* bits 07..04: Seek SNR Threshold */ +#define SYSCONFIG3_SKCNT 0x000f /* bits 03..00: Seek FM Impulse Detection Threshold */ + +#define TEST1 7 /* Test 1 */ +#define TEST1_AHIZEN 0x4000 /* bits 14..14: Audio High-Z Enable */ + +#define TEST2 8 /* Test 2 */ +/* TEST2 only contains reserved bits */ + +#define BOOTCONFIG 9 /* Boot Configuration */ +/* BOOTCONFIG only contains reserved bits */ + +#define STATUSRSSI 10 /* Status RSSI */ +#define STATUSRSSI_RDSR 0x8000 /* bits 15..15: RDS Ready (Si4701 only) */ +#define STATUSRSSI_STC 0x4000 /* bits 14..14: Seek/Tune Complete */ +#define STATUSRSSI_SF 0x2000 /* bits 13..13: Seek Fail/Band Limit */ +#define STATUSRSSI_AFCRL 0x1000 /* bits 12..12: AFC Rail */ +#define STATUSRSSI_RDSS 0x0800 /* bits 11..11: RDS Synchronized (Si4701 only) */ +#define STATUSRSSI_BLERA 0x0600 /* bits 10..09: RDS Block A Errors (Si4701 only) */ +#define STATUSRSSI_ST 0x0100 /* bits 08..08: Stereo Indicator */ +#define STATUSRSSI_RSSI 0x00ff /* bits 07..00: RSSI (Received Signal Strength Indicator) */ + +#define READCHAN 11 /* Read Channel */ +#define READCHAN_BLERB 0xc000 /* bits 15..14: RDS Block D Errors (Si4701 only) */ +#define READCHAN_BLERC 0x3000 /* bits 13..12: RDS Block C Errors (Si4701 only) */ +#define READCHAN_BLERD 0x0c00 /* bits 11..10: RDS Block B Errors (Si4701 only) */ +#define READCHAN_READCHAN 0x03ff /* bits 09..00: Read Channel */ + +#define RDSA 12 /* RDSA */ +#define RDSA_RDSA 0xffff /* bits 15..00: RDS Block A Data (Si4701 only) */ + +#define RDSB 13 /* RDSB */ +#define RDSB_RDSB 0xffff /* bits 15..00: RDS Block B Data (Si4701 only) */ + +#define RDSC 14 /* RDSC */ +#define RDSC_RDSC 0xffff /* bits 15..00: RDS Block C Data (Si4701 only) */ + +#define RDSD 15 /* RDSD */ +#define RDSD_RDSD 0xffff /* bits 15..00: RDS Block D Data (Si4701 only) */ + + + +/************************************************************************** + * General Driver Definitions + **************************************************************************/ + +/* + * si470x_device - private data + */ +struct si470x_device { + struct video_device *videodev; + + /* driver management */ + unsigned int users; + + /* Silabs internal registers (0..15) */ + unsigned short registers[RADIO_REGISTER_NUM]; + + /* RDS receive buffer */ + wait_queue_head_t read_queue; + struct mutex lock; /* buffer locking */ + unsigned char *buffer; /* size is always multiple of three */ + unsigned int buf_size; + unsigned int rd_index; + unsigned int wr_index; + +#if defined(CONFIG_USB_SI470X) || defined(CONFIG_USB_SI470X_MODULE) + /* reference to USB and video device */ + struct usb_device *usbdev; + struct usb_interface *intf; + + /* Interrupt endpoint handling */ + char *int_in_buffer; + struct usb_endpoint_descriptor *int_in_endpoint; + struct urb *int_in_urb; + int int_in_running; + + /* scratch page */ + unsigned char software_version; + unsigned char hardware_version; + + /* driver management */ + unsigned char disconnected; + struct mutex disconnect_lock; +#endif + +#if defined(CONFIG_I2C_SI470X) || defined(CONFIG_I2C_SI470X_MODULE) + struct i2c_client *client; +#endif +}; + + + +/************************************************************************** + * Firmware Versions + **************************************************************************/ + +#define RADIO_FW_VERSION 15 + + + +/************************************************************************** + * Frequency Multiplicator + **************************************************************************/ + +/* + * 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) + + + +/************************************************************************** + * Common Functions + **************************************************************************/ +extern const struct v4l2_file_operations si470x_fops; +extern struct video_device si470x_viddev_template; +int si470x_get_register(struct si470x_device *radio, int regnr); +int si470x_set_register(struct si470x_device *radio, int regnr); +int si470x_disconnect_check(struct si470x_device *radio); +int si470x_set_freq(struct si470x_device *radio, unsigned int freq); +int si470x_start(struct si470x_device *radio); +int si470x_stop(struct si470x_device *radio); +int si470x_rds_on(struct si470x_device *radio); +int si470x_vidioc_querycap(struct file *file, void *priv, + struct v4l2_capability *capability); diff --git a/drivers/media/radio/si4713-i2c.c b/drivers/media/radio/si4713-i2c.c new file mode 100644 index 00000000000..6a0028eb461 --- /dev/null +++ b/drivers/media/radio/si4713-i2c.c @@ -0,0 +1,2060 @@ +/* + * drivers/media/radio/si4713-i2c.c + * + * Silicon Labs Si4713 FM Radio Transmitter I2C commands. + * + * Copyright (c) 2009 Nokia Corporation + * Contact: Eduardo Valentin <eduardo.valentin@nokia.com> + * + * 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 + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * 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 + */ + +#include <linux/mutex.h> +#include <linux/completion.h> +#include <linux/delay.h> +#include <linux/interrupt.h> +#include <linux/i2c.h> +#include <media/v4l2-device.h> +#include <media/v4l2-ioctl.h> +#include <media/v4l2-common.h> + +#include "si4713-i2c.h" + +/* module parameters */ +static int debug; +module_param(debug, int, S_IRUGO | S_IWUSR); +MODULE_PARM_DESC(debug, "Debug level (0 - 2)"); + +MODULE_LICENSE("GPL"); +MODULE_AUTHOR("Eduardo Valentin <eduardo.valentin@nokia.com>"); +MODULE_DESCRIPTION("I2C driver for Si4713 FM Radio Transmitter"); +MODULE_VERSION("0.0.1"); + +#define DEFAULT_RDS_PI 0x00 +#define DEFAULT_RDS_PTY 0x00 +#define DEFAULT_RDS_PS_NAME "" +#define DEFAULT_RDS_RADIO_TEXT DEFAULT_RDS_PS_NAME +#define DEFAULT_RDS_DEVIATION 0x00C8 +#define DEFAULT_RDS_PS_REPEAT_COUNT 0x0003 +#define DEFAULT_LIMITER_RTIME 0x1392 +#define DEFAULT_LIMITER_DEV 0x102CA +#define DEFAULT_PILOT_FREQUENCY 0x4A38 +#define DEFAULT_PILOT_DEVIATION 0x1A5E +#define DEFAULT_ACOMP_ATIME 0x0000 +#define DEFAULT_ACOMP_RTIME 0xF4240L +#define DEFAULT_ACOMP_GAIN 0x0F +#define DEFAULT_ACOMP_THRESHOLD (-0x28) +#define DEFAULT_MUTE 0x01 +#define DEFAULT_POWER_LEVEL 88 +#define DEFAULT_FREQUENCY 8800 +#define DEFAULT_PREEMPHASIS FMPE_EU +#define DEFAULT_TUNE_RNL 0xFF + +#define to_si4713_device(sd) container_of(sd, struct si4713_device, sd) + +/* frequency domain transformation (using times 10 to avoid floats) */ +#define FREQDEV_UNIT 100000 +#define FREQV4L2_MULTI 625 +#define si4713_to_v4l2(f) ((f * FREQDEV_UNIT) / FREQV4L2_MULTI) +#define v4l2_to_si4713(f) ((f * FREQV4L2_MULTI) / FREQDEV_UNIT) +#define FREQ_RANGE_LOW 7600 +#define FREQ_RANGE_HIGH 10800 + +#define MAX_ARGS 7 + +#define RDS_BLOCK 8 +#define RDS_BLOCK_CLEAR 0x03 +#define RDS_BLOCK_LOAD 0x04 +#define RDS_RADIOTEXT_2A 0x20 +#define RDS_RADIOTEXT_BLK_SIZE 4 +#define RDS_RADIOTEXT_INDEX_MAX 0x0F +#define RDS_CARRIAGE_RETURN 0x0D + +#define rds_ps_nblocks(len) ((len / RDS_BLOCK) + (len % RDS_BLOCK ? 1 : 0)) + +#define get_status_bit(p, b, m) (((p) & (m)) >> (b)) +#define set_bits(p, v, b, m) (((p) & ~(m)) | ((v) << (b))) + +#define ATTACK_TIME_UNIT 500 + +#define POWER_OFF 0x00 +#define POWER_ON 0x01 + +#define msb(x) ((u8)((u16) x >> 8)) +#define lsb(x) ((u8)((u16) x & 0x00FF)) +#define compose_u16(msb, lsb) (((u16)msb << 8) | lsb) +#define check_command_failed(status) (!(status & SI4713_CTS) || \ + (status & SI4713_ERR)) +/* mute definition */ +#define set_mute(p) ((p & 1) | ((p & 1) << 1)); +#define get_mute(p) (p & 0x01) + +#ifdef DEBUG +#define DBG_BUFFER(device, message, buffer, size) \ + { \ + int i; \ + char str[(size)*5]; \ + for (i = 0; i < size; i++) \ + sprintf(str + i * 5, " 0x%02x", buffer[i]); \ + v4l2_dbg(2, debug, device, "%s:%s\n", message, str); \ + } +#else +#define DBG_BUFFER(device, message, buffer, size) +#endif + +/* + * Values for limiter release time (sorted by second column) + * device release + * value time (us) + */ +static long limiter_times[] = { + 2000, 250, + 1000, 500, + 510, 1000, + 255, 2000, + 170, 3000, + 127, 4020, + 102, 5010, + 85, 6020, + 73, 7010, + 64, 7990, + 57, 8970, + 51, 10030, + 25, 20470, + 17, 30110, + 13, 39380, + 10, 51190, + 8, 63690, + 7, 73140, + 6, 85330, + 5, 102390, +}; + +/* + * Values for audio compression release time (sorted by second column) + * device release + * value time (us) + */ +static unsigned long acomp_rtimes[] = { + 0, 100000, + 1, 200000, + 2, 350000, + 3, 525000, + 4, 1000000, +}; + +/* + * Values for preemphasis (sorted by second column) + * device preemphasis + * value value (v4l2) + */ +static unsigned long preemphasis_values[] = { + FMPE_DISABLED, V4L2_PREEMPHASIS_DISABLED, + FMPE_EU, V4L2_PREEMPHASIS_50_uS, + FMPE_USA, V4L2_PREEMPHASIS_75_uS, +}; + +static int usecs_to_dev(unsigned long usecs, unsigned long const array[], + int size) +{ + int i; + int rval = -EINVAL; + + for (i = 0; i < size / 2; i++) + if (array[(i * 2) + 1] >= usecs) { + rval = array[i * 2]; + break; + } + + return rval; +} + +static unsigned long dev_to_usecs(int value, unsigned long const array[], + int size) +{ + int i; + int rval = -EINVAL; + + for (i = 0; i < size / 2; i++) + if (array[i * 2] == value) { + rval = array[(i * 2) + 1]; + break; + } + + return rval; +} + +/* si4713_handler: IRQ handler, just complete work */ +static irqreturn_t si4713_handler(int irq, void *dev) +{ + struct si4713_device *sdev = dev; + + v4l2_dbg(2, debug, &sdev->sd, + "%s: sending signal to completion work.\n", __func__); + complete(&sdev->work); + + return IRQ_HANDLED; +} + +/* + * si4713_send_command - sends a command to si4713 and waits its response + * @sdev: si4713_device structure for the device we are communicating + * @command: command id + * @args: command arguments we are sending (up to 7) + * @argn: actual size of @args + * @response: buffer to place the expected response from the device (up to 15) + * @respn: actual size of @response + * @usecs: amount of time to wait before reading the response (in usecs) + */ +static int si4713_send_command(struct si4713_device *sdev, const u8 command, + const u8 args[], const int argn, + u8 response[], const int respn, const int usecs) +{ + struct i2c_client *client = v4l2_get_subdevdata(&sdev->sd); + u8 data1[MAX_ARGS + 1]; + int err; + + if (!client->adapter) + return -ENODEV; + + /* First send the command and its arguments */ + data1[0] = command; + memcpy(data1 + 1, args, argn); + DBG_BUFFER(&sdev->sd, "Parameters", data1, argn + 1); + + err = i2c_master_send(client, data1, argn + 1); + if (err != argn + 1) { + v4l2_err(&sdev->sd, "Error while sending command 0x%02x\n", + command); + return (err > 0) ? -EIO : err; + } + + /* Wait response from interrupt */ + if (!wait_for_completion_timeout(&sdev->work, + usecs_to_jiffies(usecs) + 1)) + v4l2_warn(&sdev->sd, + "(%s) Device took too much time to answer.\n", + __func__); + + /* Then get the response */ + err = i2c_master_recv(client, response, respn); + if (err != respn) { + v4l2_err(&sdev->sd, + "Error while reading response for command 0x%02x\n", + command); + return (err > 0) ? -EIO : err; + } + + DBG_BUFFER(&sdev->sd, "Response", response, respn); + if (check_command_failed(response[0])) + return -EBUSY; + + return 0; +} + +/* + * si4713_read_property - reads a si4713 property + * @sdev: si4713_device structure for the device we are communicating + * @prop: property identification number + * @pv: property value to be returned on success + */ +static int si4713_read_property(struct si4713_device *sdev, u16 prop, u32 *pv) +{ + int err; + u8 val[SI4713_GET_PROP_NRESP]; + /* + * .First byte = 0 + * .Second byte = property's MSB + * .Third byte = property's LSB + */ + const u8 args[SI4713_GET_PROP_NARGS] = { + 0x00, + msb(prop), + lsb(prop), + }; + + err = si4713_send_command(sdev, SI4713_CMD_GET_PROPERTY, + args, ARRAY_SIZE(args), val, + ARRAY_SIZE(val), DEFAULT_TIMEOUT); + + if (err < 0) + return err; + + *pv = compose_u16(val[2], val[3]); + + v4l2_dbg(1, debug, &sdev->sd, + "%s: property=0x%02x value=0x%02x status=0x%02x\n", + __func__, prop, *pv, val[0]); + + return err; +} + +/* + * si4713_write_property - modifies a si4713 property + * @sdev: si4713_device structure for the device we are communicating + * @prop: property identification number + * @val: new value for that property + */ +static int si4713_write_property(struct si4713_device *sdev, u16 prop, u16 val) +{ + int rval; + u8 resp[SI4713_SET_PROP_NRESP]; + /* + * .First byte = 0 + * .Second byte = property's MSB + * .Third byte = property's LSB + * .Fourth byte = value's MSB + * .Fifth byte = value's LSB + */ + const u8 args[SI4713_SET_PROP_NARGS] = { + 0x00, + msb(prop), + lsb(prop), + msb(val), + lsb(val), + }; + + rval = si4713_send_command(sdev, SI4713_CMD_SET_PROPERTY, + args, ARRAY_SIZE(args), + resp, ARRAY_SIZE(resp), + DEFAULT_TIMEOUT); + + if (rval < 0) + return rval; + + v4l2_dbg(1, debug, &sdev->sd, + "%s: property=0x%02x value=0x%02x status=0x%02x\n", + __func__, prop, val, resp[0]); + + /* + * As there is no command response for SET_PROPERTY, + * wait Tcomp time to finish before proceed, in order + * to have property properly set. + */ + msleep(TIMEOUT_SET_PROPERTY); + + return rval; +} + +/* + * si4713_powerup - Powers the device up + * @sdev: si4713_device structure for the device we are communicating + */ +static int si4713_powerup(struct si4713_device *sdev) +{ + int err; + u8 resp[SI4713_PWUP_NRESP]; + /* + * .First byte = Enabled interrupts and boot function + * .Second byte = Input operation mode + */ + const u8 args[SI4713_PWUP_NARGS] = { + SI4713_PWUP_CTSIEN | SI4713_PWUP_GPO2OEN | SI4713_PWUP_FUNC_TX, + SI4713_PWUP_OPMOD_ANALOG, + }; + + if (sdev->power_state) + return 0; + + sdev->platform_data->set_power(1); + err = si4713_send_command(sdev, SI4713_CMD_POWER_UP, + args, ARRAY_SIZE(args), + resp, ARRAY_SIZE(resp), + TIMEOUT_POWER_UP); + + if (!err) { + v4l2_dbg(1, debug, &sdev->sd, "Powerup response: 0x%02x\n", + resp[0]); + v4l2_dbg(1, debug, &sdev->sd, "Device in power up mode\n"); + sdev->power_state = POWER_ON; + + err = si4713_write_property(sdev, SI4713_GPO_IEN, + SI4713_STC_INT | SI4713_CTS); + } else { + sdev->platform_data->set_power(0); + } + + return err; +} + +/* + * si4713_powerdown - Powers the device down + * @sdev: si4713_device structure for the device we are communicating + */ +static int si4713_powerdown(struct si4713_device *sdev) +{ + int err; + u8 resp[SI4713_PWDN_NRESP]; + + if (!sdev->power_state) + return 0; + + err = si4713_send_command(sdev, SI4713_CMD_POWER_DOWN, + NULL, 0, + resp, ARRAY_SIZE(resp), + DEFAULT_TIMEOUT); + + if (!err) { + v4l2_dbg(1, debug, &sdev->sd, "Power down response: 0x%02x\n", + resp[0]); + v4l2_dbg(1, debug, &sdev->sd, "Device in reset mode\n"); + sdev->platform_data->set_power(0); + sdev->power_state = POWER_OFF; + } + + return err; +} + +/* + * si4713_checkrev - Checks if we are treating a device with the correct rev. + * @sdev: si4713_device structure for the device we are communicating + */ +static int si4713_checkrev(struct si4713_device *sdev) +{ + struct i2c_client *client = v4l2_get_subdevdata(&sdev->sd); + int rval; + u8 resp[SI4713_GETREV_NRESP]; + + mutex_lock(&sdev->mutex); + + rval = si4713_send_command(sdev, SI4713_CMD_GET_REV, + NULL, 0, + resp, ARRAY_SIZE(resp), + DEFAULT_TIMEOUT); + + if (rval < 0) + goto unlock; + + if (resp[1] == SI4713_PRODUCT_NUMBER) { + v4l2_info(&sdev->sd, "chip found @ 0x%02x (%s)\n", + client->addr << 1, client->adapter->name); + } else { + v4l2_err(&sdev->sd, "Invalid product number\n"); + rval = -EINVAL; + } + +unlock: + mutex_unlock(&sdev->mutex); + return rval; +} + +/* + * si4713_wait_stc - Waits STC interrupt and clears status bits. Usefull + * for TX_TUNE_POWER, TX_TUNE_FREQ and TX_TUNE_MEAS + * @sdev: si4713_device structure for the device we are communicating + * @usecs: timeout to wait for STC interrupt signal + */ +static int si4713_wait_stc(struct si4713_device *sdev, const int usecs) +{ + int err; + u8 resp[SI4713_GET_STATUS_NRESP]; + + /* Wait response from STC interrupt */ + if (!wait_for_completion_timeout(&sdev->work, + usecs_to_jiffies(usecs) + 1)) + v4l2_warn(&sdev->sd, + "%s: device took too much time to answer (%d usec).\n", + __func__, usecs); + + /* Clear status bits */ + err = si4713_send_command(sdev, SI4713_CMD_GET_INT_STATUS, + NULL, 0, + resp, ARRAY_SIZE(resp), + DEFAULT_TIMEOUT); + + if (err < 0) + goto exit; + + v4l2_dbg(1, debug, &sdev->sd, + "%s: status bits: 0x%02x\n", __func__, resp[0]); + + if (!(resp[0] & SI4713_STC_INT)) + err = -EIO; + +exit: + return err; +} + +/* + * si4713_tx_tune_freq - Sets the state of the RF carrier and sets the tuning + * frequency between 76 and 108 MHz in 10 kHz units and + * steps of 50 kHz. + * @sdev: si4713_device structure for the device we are communicating + * @frequency: desired frequency (76 - 108 MHz, unit 10 KHz, step 50 kHz) + */ +static int si4713_tx_tune_freq(struct si4713_device *sdev, u16 frequency) +{ + int err; + u8 val[SI4713_TXFREQ_NRESP]; + /* + * .First byte = 0 + * .Second byte = frequency's MSB + * .Third byte = frequency's LSB + */ + const u8 args[SI4713_TXFREQ_NARGS] = { + 0x00, + msb(frequency), + lsb(frequency), + }; + + err = si4713_send_command(sdev, SI4713_CMD_TX_TUNE_FREQ, + args, ARRAY_SIZE(args), val, + ARRAY_SIZE(val), DEFAULT_TIMEOUT); + + if (err < 0) + return err; + + v4l2_dbg(1, debug, &sdev->sd, + "%s: frequency=0x%02x status=0x%02x\n", __func__, + frequency, val[0]); + + err = si4713_wait_stc(sdev, TIMEOUT_TX_TUNE); + if (err < 0) + return err; + + return compose_u16(args[1], args[2]); +} + +/* + * si4713_tx_tune_power - Sets the RF voltage level between 88 and 115 dBuV in + * 1 dB units. A value of 0x00 indicates off. The command + * also sets the antenna tuning capacitance. A value of 0 + * indicates autotuning, and a value of 1 - 191 indicates + * a manual override, which results in a tuning + * capacitance of 0.25 pF x @antcap. + * @sdev: si4713_device structure for the device we are communicating + * @power: tuning power (88 - 115 dBuV, unit/step 1 dB) + * @antcap: value of antenna tuning capacitor (0 - 191) + */ +static int si4713_tx_tune_power(struct si4713_device *sdev, u8 power, + u8 antcap) +{ + int err; + u8 val[SI4713_TXPWR_NRESP]; + /* + * .First byte = 0 + * .Second byte = 0 + * .Third byte = power + * .Fourth byte = antcap + */ + const u8 args[SI4713_TXPWR_NARGS] = { + 0x00, + 0x00, + power, + antcap, + }; + + if (((power > 0) && (power < SI4713_MIN_POWER)) || + power > SI4713_MAX_POWER || antcap > SI4713_MAX_ANTCAP) + return -EDOM; + + err = si4713_send_command(sdev, SI4713_CMD_TX_TUNE_POWER, + args, ARRAY_SIZE(args), val, + ARRAY_SIZE(val), DEFAULT_TIMEOUT); + + if (err < 0) + return err; + + v4l2_dbg(1, debug, &sdev->sd, + "%s: power=0x%02x antcap=0x%02x status=0x%02x\n", + __func__, power, antcap, val[0]); + + return si4713_wait_stc(sdev, TIMEOUT_TX_TUNE_POWER); +} + +/* + * si4713_tx_tune_measure - Enters receive mode and measures the received noise + * level in units of dBuV on the selected frequency. + * The Frequency must be between 76 and 108 MHz in 10 kHz + * units and steps of 50 kHz. The command also sets the + * antenna tuning capacitance. A value of 0 means + * autotuning, and a value of 1 to 191 indicates manual + * override. + * @sdev: si4713_device structure for the device we are communicating + * @frequency: desired frequency (76 - 108 MHz, unit 10 KHz, step 50 kHz) + * @antcap: value of antenna tuning capacitor (0 - 191) + */ +static int si4713_tx_tune_measure(struct si4713_device *sdev, u16 frequency, + u8 antcap) +{ + int err; + u8 val[SI4713_TXMEA_NRESP]; + /* + * .First byte = 0 + * .Second byte = frequency's MSB + * .Third byte = frequency's LSB + * .Fourth byte = antcap + */ + const u8 args[SI4713_TXMEA_NARGS] = { + 0x00, + msb(frequency), + lsb(frequency), + antcap, + }; + + sdev->tune_rnl = DEFAULT_TUNE_RNL; + + if (antcap > SI4713_MAX_ANTCAP) + return -EDOM; + + err = si4713_send_command(sdev, SI4713_CMD_TX_TUNE_MEASURE, + args, ARRAY_SIZE(args), val, + ARRAY_SIZE(val), DEFAULT_TIMEOUT); + + if (err < 0) + return err; + + v4l2_dbg(1, debug, &sdev->sd, + "%s: frequency=0x%02x antcap=0x%02x status=0x%02x\n", + __func__, frequency, antcap, val[0]); + + return si4713_wait_stc(sdev, TIMEOUT_TX_TUNE); +} + +/* + * si4713_tx_tune_status- Returns the status of the tx_tune_freq, tx_tune_mea or + * tx_tune_power commands. This command return the current + * frequency, output voltage in dBuV, the antenna tunning + * capacitance value and the received noise level. The + * command also clears the stcint interrupt bit when the + * first bit of its arguments is high. + * @sdev: si4713_device structure for the device we are communicating + * @intack: 0x01 to clear the seek/tune complete interrupt status indicator. + * @frequency: returned frequency + * @power: returned power + * @antcap: returned antenna capacitance + * @noise: returned noise level + */ +static int si4713_tx_tune_status(struct si4713_device *sdev, u8 intack, + u16 *frequency, u8 *power, + u8 *antcap, u8 *noise) +{ + int err; + u8 val[SI4713_TXSTATUS_NRESP]; + /* + * .First byte = intack bit + */ + const u8 args[SI4713_TXSTATUS_NARGS] = { + intack & SI4713_INTACK_MASK, + }; + + err = si4713_send_command(sdev, SI4713_CMD_TX_TUNE_STATUS, + args, ARRAY_SIZE(args), val, + ARRAY_SIZE(val), DEFAULT_TIMEOUT); + + if (!err) { + v4l2_dbg(1, debug, &sdev->sd, + "%s: status=0x%02x\n", __func__, val[0]); + *frequency = compose_u16(val[2], val[3]); + sdev->frequency = *frequency; + *power = val[5]; + *antcap = val[6]; + *noise = val[7]; + v4l2_dbg(1, debug, &sdev->sd, "%s: response: %d x 10 kHz " + "(power %d, antcap %d, rnl %d)\n", __func__, + *frequency, *power, *antcap, *noise); + } + + return err; +} + +/* + * si4713_tx_rds_buff - Loads the RDS group buffer FIFO or circular buffer. + * @sdev: si4713_device structure for the device we are communicating + * @mode: the buffer operation mode. + * @rdsb: RDS Block B + * @rdsc: RDS Block C + * @rdsd: RDS Block D + * @cbleft: returns the number of available circular buffer blocks minus the + * number of used circular buffer blocks. + */ +static int si4713_tx_rds_buff(struct si4713_device *sdev, u8 mode, u16 rdsb, + u16 rdsc, u16 rdsd, s8 *cbleft) +{ + int err; + u8 val[SI4713_RDSBUFF_NRESP]; + + const u8 args[SI4713_RDSBUFF_NARGS] = { + mode & SI4713_RDSBUFF_MODE_MASK, + msb(rdsb), + lsb(rdsb), + msb(rdsc), + lsb(rdsc), + msb(rdsd), + lsb(rdsd), + }; + + err = si4713_send_command(sdev, SI4713_CMD_TX_RDS_BUFF, + args, ARRAY_SIZE(args), val, + ARRAY_SIZE(val), DEFAULT_TIMEOUT); + + if (!err) { + v4l2_dbg(1, debug, &sdev->sd, + "%s: status=0x%02x\n", __func__, val[0]); + *cbleft = (s8)val[2] - val[3]; + v4l2_dbg(1, debug, &sdev->sd, "%s: response: interrupts" + " 0x%02x cb avail: %d cb used %d fifo avail" + " %d fifo used %d\n", __func__, val[1], + val[2], val[3], val[4], val[5]); + } + + return err; +} + +/* + * si4713_tx_rds_ps - Loads the program service buffer. + * @sdev: si4713_device structure for the device we are communicating + * @psid: program service id to be loaded. + * @pschar: assumed 4 size char array to be loaded into the program service + */ +static int si4713_tx_rds_ps(struct si4713_device *sdev, u8 psid, + unsigned char *pschar) +{ + int err; + u8 val[SI4713_RDSPS_NRESP]; + + const u8 args[SI4713_RDSPS_NARGS] = { + psid & SI4713_RDSPS_PSID_MASK, + pschar[0], + pschar[1], + pschar[2], + pschar[3], + }; + + err = si4713_send_command(sdev, SI4713_CMD_TX_RDS_PS, + args, ARRAY_SIZE(args), val, + ARRAY_SIZE(val), DEFAULT_TIMEOUT); + + if (err < 0) + return err; + + v4l2_dbg(1, debug, &sdev->sd, "%s: status=0x%02x\n", __func__, val[0]); + + return err; +} + +static int si4713_set_power_state(struct si4713_device *sdev, u8 value) +{ + int rval; + + mutex_lock(&sdev->mutex); + + if (value) + rval = si4713_powerup(sdev); + else + rval = si4713_powerdown(sdev); + + mutex_unlock(&sdev->mutex); + return rval; +} + +static int si4713_set_mute(struct si4713_device *sdev, u16 mute) +{ + int rval = 0; + + mute = set_mute(mute); + + mutex_lock(&sdev->mutex); + + if (sdev->power_state) + rval = si4713_write_property(sdev, + SI4713_TX_LINE_INPUT_MUTE, mute); + + if (rval >= 0) + sdev->mute = get_mute(mute); + + mutex_unlock(&sdev->mutex); + + return rval; +} + +static int si4713_set_rds_ps_name(struct si4713_device *sdev, char *ps_name) +{ + int rval = 0, i; + u8 len = 0; + + /* We want to clear the whole thing */ + if (!strlen(ps_name)) + memset(ps_name, 0, MAX_RDS_PS_NAME + 1); + + mutex_lock(&sdev->mutex); + + if (sdev->power_state) { + /* Write the new ps name and clear the padding */ + for (i = 0; i < MAX_RDS_PS_NAME; i += (RDS_BLOCK / 2)) { + rval = si4713_tx_rds_ps(sdev, (i / (RDS_BLOCK / 2)), + ps_name + i); + if (rval < 0) + goto unlock; + } + + /* Setup the size to be sent */ + if (strlen(ps_name)) + len = strlen(ps_name) - 1; + else + len = 1; + + rval = si4713_write_property(sdev, + SI4713_TX_RDS_PS_MESSAGE_COUNT, + rds_ps_nblocks(len)); + if (rval < 0) + goto unlock; + + rval = si4713_write_property(sdev, + SI4713_TX_RDS_PS_REPEAT_COUNT, + DEFAULT_RDS_PS_REPEAT_COUNT * 2); + if (rval < 0) + goto unlock; + } + + strncpy(sdev->rds_info.ps_name, ps_name, MAX_RDS_PS_NAME); + +unlock: + mutex_unlock(&sdev->mutex); + return rval; +} + +static int si4713_set_rds_radio_text(struct si4713_device *sdev, char *rt) +{ + int rval = 0, i; + u16 t_index = 0; + u8 b_index = 0, cr_inserted = 0; + s8 left; + + mutex_lock(&sdev->mutex); + + if (!sdev->power_state) + goto copy; + + rval = si4713_tx_rds_buff(sdev, RDS_BLOCK_CLEAR, 0, 0, 0, &left); + if (rval < 0) + goto unlock; + + if (!strlen(rt)) + goto copy; + + do { + /* RDS spec says that if the last block isn't used, + * then apply a carriage return + */ + if (t_index < (RDS_RADIOTEXT_INDEX_MAX * + RDS_RADIOTEXT_BLK_SIZE)) { + for (i = 0; i < RDS_RADIOTEXT_BLK_SIZE; i++) { + if (!rt[t_index + i] || rt[t_index + i] == + RDS_CARRIAGE_RETURN) { + rt[t_index + i] = RDS_CARRIAGE_RETURN; + cr_inserted = 1; + break; + } + } + } + + rval = si4713_tx_rds_buff(sdev, RDS_BLOCK_LOAD, + compose_u16(RDS_RADIOTEXT_2A, b_index++), + compose_u16(rt[t_index], rt[t_index + 1]), + compose_u16(rt[t_index + 2], rt[t_index + 3]), + &left); + if (rval < 0) + goto unlock; + + t_index += RDS_RADIOTEXT_BLK_SIZE; + + if (cr_inserted) + break; + } while (left > 0); + +copy: + strncpy(sdev->rds_info.radio_text, rt, MAX_RDS_RADIO_TEXT); + +unlock: + mutex_unlock(&sdev->mutex); + return rval; +} + +static int si4713_choose_econtrol_action(struct si4713_device *sdev, u32 id, + u32 **shadow, s32 *bit, s32 *mask, u16 *property, int *mul, + unsigned long **table, int *size) +{ + s32 rval = 0; + + switch (id) { + /* FM_TX class controls */ + case V4L2_CID_RDS_TX_PI: + *property = SI4713_TX_RDS_PI; + *mul = 1; + *shadow = &sdev->rds_info.pi; + break; + case V4L2_CID_AUDIO_COMPRESSION_THRESHOLD: + *property = SI4713_TX_ACOMP_THRESHOLD; + *mul = 1; + *shadow = &sdev->acomp_info.threshold; + break; + case V4L2_CID_AUDIO_COMPRESSION_GAIN: + *property = SI4713_TX_ACOMP_GAIN; + *mul = 1; + *shadow = &sdev->acomp_info.gain; + break; + case V4L2_CID_PILOT_TONE_FREQUENCY: + *property = SI4713_TX_PILOT_FREQUENCY; + *mul = 1; + *shadow = &sdev->pilot_info.frequency; + break; + case V4L2_CID_AUDIO_COMPRESSION_ATTACK_TIME: + *property = SI4713_TX_ACOMP_ATTACK_TIME; + *mul = ATTACK_TIME_UNIT; + *shadow = &sdev->acomp_info.attack_time; + break; + case V4L2_CID_PILOT_TONE_DEVIATION: + *property = SI4713_TX_PILOT_DEVIATION; + *mul = 10; + *shadow = &sdev->pilot_info.deviation; + break; + case V4L2_CID_AUDIO_LIMITER_DEVIATION: + *property = SI4713_TX_AUDIO_DEVIATION; + *mul = 10; + *shadow = &sdev->limiter_info.deviation; + break; + case V4L2_CID_RDS_TX_DEVIATION: + *property = SI4713_TX_RDS_DEVIATION; + *mul = 1; + *shadow = &sdev->rds_info.deviation; + break; + + case V4L2_CID_RDS_TX_PTY: + *property = SI4713_TX_RDS_PS_MISC; + *bit = 5; + *mask = 0x1F << 5; + *shadow = &sdev->rds_info.pty; + break; + case V4L2_CID_AUDIO_LIMITER_ENABLED: + *property = SI4713_TX_ACOMP_ENABLE; + *bit = 1; + *mask = 1 << 1; + *shadow = &sdev->limiter_info.enabled; + break; + case V4L2_CID_AUDIO_COMPRESSION_ENABLED: + *property = SI4713_TX_ACOMP_ENABLE; + *bit = 0; + *mask = 1 << 0; + *shadow = &sdev->acomp_info.enabled; + break; + case V4L2_CID_PILOT_TONE_ENABLED: + *property = SI4713_TX_COMPONENT_ENABLE; + *bit = 0; + *mask = 1 << 0; + *shadow = &sdev->pilot_info.enabled; + break; + + case V4L2_CID_AUDIO_LIMITER_RELEASE_TIME: + *property = SI4713_TX_LIMITER_RELEASE_TIME; + *table = limiter_times; + *size = ARRAY_SIZE(limiter_times); + *shadow = &sdev->limiter_info.release_time; + break; + case V4L2_CID_AUDIO_COMPRESSION_RELEASE_TIME: + *property = SI4713_TX_ACOMP_RELEASE_TIME; + *table = acomp_rtimes; + *size = ARRAY_SIZE(acomp_rtimes); + *shadow = &sdev->acomp_info.release_time; + break; + case V4L2_CID_TUNE_PREEMPHASIS: + *property = SI4713_TX_PREEMPHASIS; + *table = preemphasis_values; + *size = ARRAY_SIZE(preemphasis_values); + *shadow = &sdev->preemphasis; + break; + + default: + rval = -EINVAL; + }; + + return rval; +} + +static int si4713_queryctrl(struct v4l2_subdev *sd, struct v4l2_queryctrl *qc); + +/* write string property */ +static int si4713_write_econtrol_string(struct si4713_device *sdev, + struct v4l2_ext_control *control) +{ + struct v4l2_queryctrl vqc; + int len; + s32 rval = 0; + + vqc.id = control->id; + rval = si4713_queryctrl(&sdev->sd, &vqc); + if (rval < 0) + goto exit; + + switch (control->id) { + case V4L2_CID_RDS_TX_PS_NAME: { + char ps_name[MAX_RDS_PS_NAME + 1]; + + len = control->size - 1; + if (len > MAX_RDS_PS_NAME) { + rval = -ERANGE; + goto exit; + } + rval = copy_from_user(ps_name, control->string, len); + if (rval < 0) + goto exit; + ps_name[len] = '\0'; + + if (strlen(ps_name) % vqc.step) { + rval = -ERANGE; + goto exit; + } + + rval = si4713_set_rds_ps_name(sdev, ps_name); + } + break; + + case V4L2_CID_RDS_TX_RADIO_TEXT: { + char radio_text[MAX_RDS_RADIO_TEXT + 1]; + + len = control->size - 1; + if (len > MAX_RDS_RADIO_TEXT) { + rval = -ERANGE; + goto exit; + } + rval = copy_from_user(radio_text, control->string, len); + if (rval < 0) + goto exit; + radio_text[len] = '\0'; + + if (strlen(radio_text) % vqc.step) { + rval = -ERANGE; + goto exit; + } + + rval = si4713_set_rds_radio_text(sdev, radio_text); + } + break; + + default: + rval = -EINVAL; + break; + }; + +exit: + return rval; +} + +static int validate_range(struct v4l2_subdev *sd, + struct v4l2_ext_control *control) +{ + struct v4l2_queryctrl vqc; + int rval; + + vqc.id = control->id; + rval = si4713_queryctrl(sd, &vqc); + if (rval < 0) + goto exit; + + if (control->value < vqc.minimum || control->value > vqc.maximum) + rval = -ERANGE; + +exit: + return rval; +} + +/* properties which use tx_tune_power*/ +static int si4713_write_econtrol_tune(struct si4713_device *sdev, + struct v4l2_ext_control *control) +{ + s32 rval = 0; + u8 power, antcap; + + rval = validate_range(&sdev->sd, control); + if (rval < 0) + goto exit; + + mutex_lock(&sdev->mutex); + + switch (control->id) { + case V4L2_CID_TUNE_POWER_LEVEL: + power = control->value; + antcap = sdev->antenna_capacitor; + break; + case V4L2_CID_TUNE_ANTENNA_CAPACITOR: + power = sdev->power_level; + antcap = control->value; + break; + default: + rval = -EINVAL; + goto unlock; + }; + + if (sdev->power_state) + rval = si4713_tx_tune_power(sdev, power, antcap); + + if (rval == 0) { + sdev->power_level = power; + sdev->antenna_capacitor = antcap; + } + +unlock: + mutex_unlock(&sdev->mutex); +exit: + return rval; +} + +static int si4713_write_econtrol_integers(struct si4713_device *sdev, + struct v4l2_ext_control *control) +{ + s32 rval; + u32 *shadow = NULL, val = 0; + s32 bit = 0, mask = 0; + u16 property = 0; + int mul = 0; + unsigned long *table = NULL; + int size = 0; + + rval = validate_range(&sdev->sd, control); + if (rval < 0) + goto exit; + + rval = si4713_choose_econtrol_action(sdev, control->id, &shadow, &bit, + &mask, &property, &mul, &table, &size); + if (rval < 0) + goto exit; + + val = control->value; + if (mul) { + val = control->value / mul; + } else if (table) { + rval = usecs_to_dev(control->value, table, size); + if (rval < 0) + goto exit; + val = rval; + rval = 0; + } + + mutex_lock(&sdev->mutex); + + if (sdev->power_state) { + if (mask) { + rval = si4713_read_property(sdev, property, &val); + if (rval < 0) + goto unlock; + val = set_bits(val, control->value, bit, mask); + } + + rval = si4713_write_property(sdev, property, val); + if (rval < 0) + goto unlock; + if (mask) + val = control->value; + } + + if (mul) { + *shadow = val * mul; + } else if (table) { + rval = dev_to_usecs(val, table, size); + if (rval < 0) + goto unlock; + *shadow = rval; + rval = 0; + } else { + *shadow = val; + } + +unlock: + mutex_unlock(&sdev->mutex); +exit: + return rval; +} + +static int si4713_s_frequency(struct v4l2_subdev *sd, struct v4l2_frequency *f); +static int si4713_s_modulator(struct v4l2_subdev *sd, struct v4l2_modulator *); +/* + * si4713_setup - Sets the device up with current configuration. + * @sdev: si4713_device structure for the device we are communicating + */ +static int si4713_setup(struct si4713_device *sdev) +{ + struct v4l2_ext_control ctrl; + struct v4l2_frequency f; + struct v4l2_modulator vm; + struct si4713_device *tmp; + int rval = 0; + + tmp = kmalloc(sizeof(*tmp), GFP_KERNEL); + if (!tmp) + return -ENOMEM; + + /* Get a local copy to avoid race */ + mutex_lock(&sdev->mutex); + memcpy(tmp, sdev, sizeof(*sdev)); + mutex_unlock(&sdev->mutex); + + ctrl.id = V4L2_CID_RDS_TX_PI; + ctrl.value = tmp->rds_info.pi; + rval |= si4713_write_econtrol_integers(sdev, &ctrl); + + ctrl.id = V4L2_CID_AUDIO_COMPRESSION_THRESHOLD; + ctrl.value = tmp->acomp_info.threshold; + rval |= si4713_write_econtrol_integers(sdev, &ctrl); + + ctrl.id = V4L2_CID_AUDIO_COMPRESSION_GAIN; + ctrl.value = tmp->acomp_info.gain; + rval |= si4713_write_econtrol_integers(sdev, &ctrl); + + ctrl.id = V4L2_CID_PILOT_TONE_FREQUENCY; + ctrl.value = tmp->pilot_info.frequency; + rval |= si4713_write_econtrol_integers(sdev, &ctrl); + + ctrl.id = V4L2_CID_AUDIO_COMPRESSION_ATTACK_TIME; + ctrl.value = tmp->acomp_info.attack_time; + rval |= si4713_write_econtrol_integers(sdev, &ctrl); + + ctrl.id = V4L2_CID_PILOT_TONE_DEVIATION; + ctrl.value = tmp->pilot_info.deviation; + rval |= si4713_write_econtrol_integers(sdev, &ctrl); + + ctrl.id = V4L2_CID_AUDIO_LIMITER_DEVIATION; + ctrl.value = tmp->limiter_info.deviation; + rval |= si4713_write_econtrol_integers(sdev, &ctrl); + + ctrl.id = V4L2_CID_RDS_TX_DEVIATION; + ctrl.value = tmp->rds_info.deviation; + rval |= si4713_write_econtrol_integers(sdev, &ctrl); + + ctrl.id = V4L2_CID_RDS_TX_PTY; + ctrl.value = tmp->rds_info.pty; + rval |= si4713_write_econtrol_integers(sdev, &ctrl); + + ctrl.id = V4L2_CID_AUDIO_LIMITER_ENABLED; + ctrl.value = tmp->limiter_info.enabled; + rval |= si4713_write_econtrol_integers(sdev, &ctrl); + + ctrl.id = V4L2_CID_AUDIO_COMPRESSION_ENABLED; + ctrl.value = tmp->acomp_info.enabled; + rval |= si4713_write_econtrol_integers(sdev, &ctrl); + + ctrl.id = V4L2_CID_PILOT_TONE_ENABLED; + ctrl.value = tmp->pilot_info.enabled; + rval |= si4713_write_econtrol_integers(sdev, &ctrl); + + ctrl.id = V4L2_CID_AUDIO_LIMITER_RELEASE_TIME; + ctrl.value = tmp->limiter_info.release_time; + rval |= si4713_write_econtrol_integers(sdev, &ctrl); + + ctrl.id = V4L2_CID_AUDIO_COMPRESSION_RELEASE_TIME; + ctrl.value = tmp->acomp_info.release_time; + rval |= si4713_write_econtrol_integers(sdev, &ctrl); + + ctrl.id = V4L2_CID_TUNE_PREEMPHASIS; + ctrl.value = tmp->preemphasis; + rval |= si4713_write_econtrol_integers(sdev, &ctrl); + + ctrl.id = V4L2_CID_RDS_TX_PS_NAME; + rval |= si4713_set_rds_ps_name(sdev, tmp->rds_info.ps_name); + + ctrl.id = V4L2_CID_RDS_TX_RADIO_TEXT; + rval |= si4713_set_rds_radio_text(sdev, tmp->rds_info.radio_text); + + /* Device procedure needs to set frequency first */ + f.frequency = tmp->frequency ? tmp->frequency : DEFAULT_FREQUENCY; + f.frequency = si4713_to_v4l2(f.frequency); + rval |= si4713_s_frequency(&sdev->sd, &f); + + ctrl.id = V4L2_CID_TUNE_POWER_LEVEL; + ctrl.value = tmp->power_level; + rval |= si4713_write_econtrol_tune(sdev, &ctrl); + + ctrl.id = V4L2_CID_TUNE_ANTENNA_CAPACITOR; + ctrl.value = tmp->antenna_capacitor; + rval |= si4713_write_econtrol_tune(sdev, &ctrl); + + vm.index = 0; + if (tmp->stereo) + vm.txsubchans = V4L2_TUNER_SUB_STEREO; + else + vm.txsubchans = V4L2_TUNER_SUB_MONO; + if (tmp->rds_info.enabled) + vm.txsubchans |= V4L2_TUNER_SUB_RDS; + si4713_s_modulator(&sdev->sd, &vm); + + kfree(tmp); + + return rval; +} + +/* + * si4713_initialize - Sets the device up with default configuration. + * @sdev: si4713_device structure for the device we are communicating + */ +static int si4713_initialize(struct si4713_device *sdev) +{ + int rval; + + rval = si4713_set_power_state(sdev, POWER_ON); + if (rval < 0) + goto exit; + + rval = si4713_checkrev(sdev); + if (rval < 0) + goto exit; + + rval = si4713_set_power_state(sdev, POWER_OFF); + if (rval < 0) + goto exit; + + mutex_lock(&sdev->mutex); + + sdev->rds_info.pi = DEFAULT_RDS_PI; + sdev->rds_info.pty = DEFAULT_RDS_PTY; + sdev->rds_info.deviation = DEFAULT_RDS_DEVIATION; + strlcpy(sdev->rds_info.ps_name, DEFAULT_RDS_PS_NAME, MAX_RDS_PS_NAME); + strlcpy(sdev->rds_info.radio_text, DEFAULT_RDS_RADIO_TEXT, + MAX_RDS_RADIO_TEXT); + sdev->rds_info.enabled = 1; + + sdev->limiter_info.release_time = DEFAULT_LIMITER_RTIME; + sdev->limiter_info.deviation = DEFAULT_LIMITER_DEV; + sdev->limiter_info.enabled = 1; + + sdev->pilot_info.deviation = DEFAULT_PILOT_DEVIATION; + sdev->pilot_info.frequency = DEFAULT_PILOT_FREQUENCY; + sdev->pilot_info.enabled = 1; + + sdev->acomp_info.release_time = DEFAULT_ACOMP_RTIME; + sdev->acomp_info.attack_time = DEFAULT_ACOMP_ATIME; + sdev->acomp_info.threshold = DEFAULT_ACOMP_THRESHOLD; + sdev->acomp_info.gain = DEFAULT_ACOMP_GAIN; + sdev->acomp_info.enabled = 1; + + sdev->frequency = DEFAULT_FREQUENCY; + sdev->preemphasis = DEFAULT_PREEMPHASIS; + sdev->mute = DEFAULT_MUTE; + sdev->power_level = DEFAULT_POWER_LEVEL; + sdev->antenna_capacitor = 0; + sdev->stereo = 1; + sdev->tune_rnl = DEFAULT_TUNE_RNL; + + mutex_unlock(&sdev->mutex); + +exit: + return rval; +} + +/* read string property */ +static int si4713_read_econtrol_string(struct si4713_device *sdev, + struct v4l2_ext_control *control) +{ + s32 rval = 0; + + switch (control->id) { + case V4L2_CID_RDS_TX_PS_NAME: + if (strlen(sdev->rds_info.ps_name) + 1 > control->size) { + control->size = MAX_RDS_PS_NAME + 1; + rval = -ENOSPC; + goto exit; + } + rval = copy_to_user(control->string, sdev->rds_info.ps_name, + strlen(sdev->rds_info.ps_name) + 1); + break; + + case V4L2_CID_RDS_TX_RADIO_TEXT: + if (strlen(sdev->rds_info.radio_text) + 1 > control->size) { + control->size = MAX_RDS_RADIO_TEXT + 1; + rval = -ENOSPC; + goto exit; + } + rval = copy_to_user(control->string, sdev->rds_info.radio_text, + strlen(sdev->rds_info.radio_text) + 1); + break; + + default: + rval = -EINVAL; + break; + }; + +exit: + return rval; +} + +/* + * si4713_update_tune_status - update properties from tx_tune_status + * command. Must be called with sdev->mutex held. + * @sdev: si4713_device structure for the device we are communicating + */ +static int si4713_update_tune_status(struct si4713_device *sdev) +{ + int rval; + u16 f = 0; + u8 p = 0, a = 0, n = 0; + + rval = si4713_tx_tune_status(sdev, 0x00, &f, &p, &a, &n); + + if (rval < 0) + goto exit; + + sdev->power_level = p; + sdev->antenna_capacitor = a; + sdev->tune_rnl = n; + +exit: + return rval; +} + +/* properties which use tx_tune_status */ +static int si4713_read_econtrol_tune(struct si4713_device *sdev, + struct v4l2_ext_control *control) +{ + s32 rval = 0; + + mutex_lock(&sdev->mutex); + + if (sdev->power_state) { + rval = si4713_update_tune_status(sdev); + if (rval < 0) + goto unlock; + } + + switch (control->id) { + case V4L2_CID_TUNE_POWER_LEVEL: + control->value = sdev->power_level; + break; + case V4L2_CID_TUNE_ANTENNA_CAPACITOR: + control->value = sdev->antenna_capacitor; + break; + default: + rval = -EINVAL; + }; + +unlock: + mutex_unlock(&sdev->mutex); + return rval; +} + +static int si4713_read_econtrol_integers(struct si4713_device *sdev, + struct v4l2_ext_control *control) +{ + s32 rval; + u32 *shadow = NULL, val = 0; + s32 bit = 0, mask = 0; + u16 property = 0; + int mul = 0; + unsigned long *table = NULL; + int size = 0; + + rval = si4713_choose_econtrol_action(sdev, control->id, &shadow, &bit, + &mask, &property, &mul, &table, &size); + if (rval < 0) + goto exit; + + mutex_lock(&sdev->mutex); + + if (sdev->power_state) { + rval = si4713_read_property(sdev, property, &val); + if (rval < 0) + goto unlock; + + /* Keep negative values for threshold */ + if (control->id == V4L2_CID_AUDIO_COMPRESSION_THRESHOLD) + *shadow = (s16)val; + else if (mask) + *shadow = get_status_bit(val, bit, mask); + else if (mul) + *shadow = val * mul; + else + *shadow = dev_to_usecs(val, table, size); + } + + control->value = *shadow; + +unlock: + mutex_unlock(&sdev->mutex); +exit: + return rval; +} + +/* + * Video4Linux Subdev Interface + */ +/* si4713_s_ext_ctrls - set extended controls value */ +static int si4713_s_ext_ctrls(struct v4l2_subdev *sd, + struct v4l2_ext_controls *ctrls) +{ + struct si4713_device *sdev = to_si4713_device(sd); + int i; + + if (ctrls->ctrl_class != V4L2_CTRL_CLASS_FM_TX) + return -EINVAL; + + for (i = 0; i < ctrls->count; i++) { + int err; + + switch ((ctrls->controls + i)->id) { + case V4L2_CID_RDS_TX_PS_NAME: + case V4L2_CID_RDS_TX_RADIO_TEXT: + err = si4713_write_econtrol_string(sdev, + ctrls->controls + i); + break; + case V4L2_CID_TUNE_ANTENNA_CAPACITOR: + case V4L2_CID_TUNE_POWER_LEVEL: + err = si4713_write_econtrol_tune(sdev, + ctrls->controls + i); + break; + default: + err = si4713_write_econtrol_integers(sdev, + ctrls->controls + i); + } + + if (err < 0) { + ctrls->error_idx = i; + return err; + } + } + + return 0; +} + +/* si4713_g_ext_ctrls - get extended controls value */ +static int si4713_g_ext_ctrls(struct v4l2_subdev *sd, + struct v4l2_ext_controls *ctrls) +{ + struct si4713_device *sdev = to_si4713_device(sd); + int i; + + if (ctrls->ctrl_class != V4L2_CTRL_CLASS_FM_TX) + return -EINVAL; + + for (i = 0; i < ctrls->count; i++) { + int err; + + switch ((ctrls->controls + i)->id) { + case V4L2_CID_RDS_TX_PS_NAME: + case V4L2_CID_RDS_TX_RADIO_TEXT: + err = si4713_read_econtrol_string(sdev, + ctrls->controls + i); + break; + case V4L2_CID_TUNE_ANTENNA_CAPACITOR: + case V4L2_CID_TUNE_POWER_LEVEL: + err = si4713_read_econtrol_tune(sdev, + ctrls->controls + i); + break; + default: + err = si4713_read_econtrol_integers(sdev, + ctrls->controls + i); + } + + if (err < 0) { + ctrls->error_idx = i; + return err; + } + } + + return 0; +} + +/* si4713_queryctrl - enumerate control items */ +static int si4713_queryctrl(struct v4l2_subdev *sd, struct v4l2_queryctrl *qc) +{ + int rval = 0; + + switch (qc->id) { + /* User class controls */ + case V4L2_CID_AUDIO_MUTE: + rval = v4l2_ctrl_query_fill(qc, 0, 1, 1, DEFAULT_MUTE); + break; + /* FM_TX class controls */ + case V4L2_CID_RDS_TX_PI: + rval = v4l2_ctrl_query_fill(qc, 0, 0xFFFF, 1, DEFAULT_RDS_PI); + break; + case V4L2_CID_RDS_TX_PTY: + rval = v4l2_ctrl_query_fill(qc, 0, 31, 1, DEFAULT_RDS_PTY); + break; + case V4L2_CID_RDS_TX_DEVIATION: + rval = v4l2_ctrl_query_fill(qc, 0, MAX_RDS_DEVIATION, + 10, DEFAULT_RDS_DEVIATION); + break; + case V4L2_CID_RDS_TX_PS_NAME: + /* + * Report step as 8. From RDS spec, psname + * should be 8. But there are receivers which scroll strings + * sized as 8xN. + */ + rval = v4l2_ctrl_query_fill(qc, 0, MAX_RDS_PS_NAME, 8, 0); + break; + case V4L2_CID_RDS_TX_RADIO_TEXT: + /* + * Report step as 32 (2A block). From RDS spec, + * radio text should be 32 for 2A block. But there are receivers + * which scroll strings sized as 32xN. Setting default to 32. + */ + rval = v4l2_ctrl_query_fill(qc, 0, MAX_RDS_RADIO_TEXT, 32, 0); + break; + + case V4L2_CID_AUDIO_LIMITER_ENABLED: + rval = v4l2_ctrl_query_fill(qc, 0, 1, 1, 1); + break; + case V4L2_CID_AUDIO_LIMITER_RELEASE_TIME: + rval = v4l2_ctrl_query_fill(qc, 250, MAX_LIMITER_RELEASE_TIME, + 50, DEFAULT_LIMITER_RTIME); + break; + case V4L2_CID_AUDIO_LIMITER_DEVIATION: + rval = v4l2_ctrl_query_fill(qc, 0, MAX_LIMITER_DEVIATION, + 10, DEFAULT_LIMITER_DEV); + break; + + case V4L2_CID_AUDIO_COMPRESSION_ENABLED: + rval = v4l2_ctrl_query_fill(qc, 0, 1, 1, 1); + break; + case V4L2_CID_AUDIO_COMPRESSION_GAIN: + rval = v4l2_ctrl_query_fill(qc, 0, MAX_ACOMP_GAIN, 1, + DEFAULT_ACOMP_GAIN); + break; + case V4L2_CID_AUDIO_COMPRESSION_THRESHOLD: + rval = v4l2_ctrl_query_fill(qc, MIN_ACOMP_THRESHOLD, + MAX_ACOMP_THRESHOLD, 1, + DEFAULT_ACOMP_THRESHOLD); + break; + case V4L2_CID_AUDIO_COMPRESSION_ATTACK_TIME: + rval = v4l2_ctrl_query_fill(qc, 0, MAX_ACOMP_ATTACK_TIME, + 500, DEFAULT_ACOMP_ATIME); + break; + case V4L2_CID_AUDIO_COMPRESSION_RELEASE_TIME: + rval = v4l2_ctrl_query_fill(qc, 100000, MAX_ACOMP_RELEASE_TIME, + 100000, DEFAULT_ACOMP_RTIME); + break; + + case V4L2_CID_PILOT_TONE_ENABLED: + rval = v4l2_ctrl_query_fill(qc, 0, 1, 1, 1); + break; + case V4L2_CID_PILOT_TONE_DEVIATION: + rval = v4l2_ctrl_query_fill(qc, 0, MAX_PILOT_DEVIATION, + 10, DEFAULT_PILOT_DEVIATION); + break; + case V4L2_CID_PILOT_TONE_FREQUENCY: + rval = v4l2_ctrl_query_fill(qc, 0, MAX_PILOT_FREQUENCY, + 1, DEFAULT_PILOT_FREQUENCY); + break; + + case V4L2_CID_TUNE_PREEMPHASIS: + rval = v4l2_ctrl_query_fill(qc, V4L2_PREEMPHASIS_DISABLED, + V4L2_PREEMPHASIS_75_uS, 1, + V4L2_PREEMPHASIS_50_uS); + break; + case V4L2_CID_TUNE_POWER_LEVEL: + rval = v4l2_ctrl_query_fill(qc, 0, 120, 1, DEFAULT_POWER_LEVEL); + break; + case V4L2_CID_TUNE_ANTENNA_CAPACITOR: + rval = v4l2_ctrl_query_fill(qc, 0, 191, 1, 0); + break; + default: + rval = -EINVAL; + break; + }; + + return rval; +} + +/* si4713_g_ctrl - get the value of a control */ +static int si4713_g_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl) +{ + struct si4713_device *sdev = to_si4713_device(sd); + int rval = 0; + + if (!sdev) + return -ENODEV; + + mutex_lock(&sdev->mutex); + + if (sdev->power_state) { + rval = si4713_read_property(sdev, SI4713_TX_LINE_INPUT_MUTE, + &sdev->mute); + + if (rval < 0) + goto unlock; + } + + switch (ctrl->id) { + case V4L2_CID_AUDIO_MUTE: + ctrl->value = get_mute(sdev->mute); + break; + } + +unlock: + mutex_unlock(&sdev->mutex); + return rval; +} + +/* si4713_s_ctrl - set the value of a control */ +static int si4713_s_ctrl(struct v4l2_subdev *sd, struct v4l2_control *ctrl) +{ + struct si4713_device *sdev = to_si4713_device(sd); + int rval = 0; + + if (!sdev) + return -ENODEV; + + switch (ctrl->id) { + case V4L2_CID_AUDIO_MUTE: + if (ctrl->value) { + rval = si4713_set_mute(sdev, ctrl->value); + if (rval < 0) + goto exit; + + rval = si4713_set_power_state(sdev, POWER_DOWN); + } else { + rval = si4713_set_power_state(sdev, POWER_UP); + if (rval < 0) + goto exit; + + rval = si4713_setup(sdev); + if (rval < 0) + goto exit; + + rval = si4713_set_mute(sdev, ctrl->value); + } + break; + } + +exit: + return rval; +} + +/* si4713_ioctl - deal with private ioctls (only rnl for now) */ +long si4713_ioctl(struct v4l2_subdev *sd, unsigned int cmd, void *arg) +{ + struct si4713_device *sdev = to_si4713_device(sd); + struct si4713_rnl *rnl = arg; + u16 frequency; + int rval = 0; + + if (!arg) + return -EINVAL; + + mutex_lock(&sdev->mutex); + switch (cmd) { + case SI4713_IOC_MEASURE_RNL: + frequency = v4l2_to_si4713(rnl->frequency); + + if (sdev->power_state) { + /* Set desired measurement frequency */ + rval = si4713_tx_tune_measure(sdev, frequency, 0); + if (rval < 0) + goto unlock; + /* get results from tune status */ + rval = si4713_update_tune_status(sdev); + if (rval < 0) + goto unlock; + } + rnl->rnl = sdev->tune_rnl; + break; + + default: + /* nothing */ + rval = -ENOIOCTLCMD; + } + +unlock: + mutex_unlock(&sdev->mutex); + return rval; +} + +static const struct v4l2_subdev_core_ops si4713_subdev_core_ops = { + .queryctrl = si4713_queryctrl, + .g_ext_ctrls = si4713_g_ext_ctrls, + .s_ext_ctrls = si4713_s_ext_ctrls, + .g_ctrl = si4713_g_ctrl, + .s_ctrl = si4713_s_ctrl, + .ioctl = si4713_ioctl, +}; + +/* si4713_g_modulator - get modulator attributes */ +static int si4713_g_modulator(struct v4l2_subdev *sd, struct v4l2_modulator *vm) +{ + struct si4713_device *sdev = to_si4713_device(sd); + int rval = 0; + + if (!sdev) { + rval = -ENODEV; + goto exit; + } + + if (vm->index > 0) { + rval = -EINVAL; + goto exit; + } + + strncpy(vm->name, "FM Modulator", 32); + vm->capability = V4L2_TUNER_CAP_STEREO | V4L2_TUNER_CAP_LOW | + V4L2_TUNER_CAP_RDS; + + /* Report current frequency range limits */ + vm->rangelow = si4713_to_v4l2(FREQ_RANGE_LOW); + vm->rangehigh = si4713_to_v4l2(FREQ_RANGE_HIGH); + + mutex_lock(&sdev->mutex); + + if (sdev->power_state) { + u32 comp_en = 0; + + rval = si4713_read_property(sdev, SI4713_TX_COMPONENT_ENABLE, + &comp_en); + if (rval < 0) + goto unlock; + + sdev->stereo = get_status_bit(comp_en, 1, 1 << 1); + sdev->rds_info.enabled = get_status_bit(comp_en, 2, 1 << 2); + } + + /* Report current audio mode: mono or stereo */ + if (sdev->stereo) + vm->txsubchans = V4L2_TUNER_SUB_STEREO; + else + vm->txsubchans = V4L2_TUNER_SUB_MONO; + + /* Report rds feature status */ + if (sdev->rds_info.enabled) + vm->txsubchans |= V4L2_TUNER_SUB_RDS; + else + vm->txsubchans &= ~V4L2_TUNER_SUB_RDS; + +unlock: + mutex_unlock(&sdev->mutex); +exit: + return rval; +} + +/* si4713_s_modulator - set modulator attributes */ +static int si4713_s_modulator(struct v4l2_subdev *sd, struct v4l2_modulator *vm) +{ + struct si4713_device *sdev = to_si4713_device(sd); + int rval = 0; + u16 stereo, rds; + u32 p; + + if (!sdev) + return -ENODEV; + + if (vm->index > 0) + return -EINVAL; + + /* Set audio mode: mono or stereo */ + if (vm->txsubchans & V4L2_TUNER_SUB_STEREO) + stereo = 1; + else if (vm->txsubchans & V4L2_TUNER_SUB_MONO) + stereo = 0; + else + return -EINVAL; + + rds = !!(vm->txsubchans & V4L2_TUNER_SUB_RDS); + + mutex_lock(&sdev->mutex); + + if (sdev->power_state) { + rval = si4713_read_property(sdev, + SI4713_TX_COMPONENT_ENABLE, &p); + if (rval < 0) + goto unlock; + + p = set_bits(p, stereo, 1, 1 << 1); + p = set_bits(p, rds, 2, 1 << 2); + + rval = si4713_write_property(sdev, + SI4713_TX_COMPONENT_ENABLE, p); + if (rval < 0) + goto unlock; + } + + sdev->stereo = stereo; + sdev->rds_info.enabled = rds; + +unlock: + mutex_unlock(&sdev->mutex); + return rval; +} + +/* si4713_g_frequency - get tuner or modulator radio frequency */ +static int si4713_g_frequency(struct v4l2_subdev *sd, struct v4l2_frequency *f) +{ + struct si4713_device *sdev = to_si4713_device(sd); + int rval = 0; + + f->type = V4L2_TUNER_RADIO; + + mutex_lock(&sdev->mutex); + + if (sdev->power_state) { + u16 freq; + u8 p, a, n; + + rval = si4713_tx_tune_status(sdev, 0x00, &freq, &p, &a, &n); + if (rval < 0) + goto unlock; + + sdev->frequency = freq; + } + + f->frequency = si4713_to_v4l2(sdev->frequency); + +unlock: + mutex_unlock(&sdev->mutex); + return rval; +} + +/* si4713_s_frequency - set tuner or modulator radio frequency */ +static int si4713_s_frequency(struct v4l2_subdev *sd, struct v4l2_frequency *f) +{ + struct si4713_device *sdev = to_si4713_device(sd); + int rval = 0; + u16 frequency = v4l2_to_si4713(f->frequency); + + /* Check frequency range */ + if (frequency < FREQ_RANGE_LOW || frequency > FREQ_RANGE_HIGH) + return -EDOM; + + mutex_lock(&sdev->mutex); + + if (sdev->power_state) { + rval = si4713_tx_tune_freq(sdev, frequency); + if (rval < 0) + goto unlock; + frequency = rval; + rval = 0; + } + sdev->frequency = frequency; + f->frequency = si4713_to_v4l2(frequency); + +unlock: + mutex_unlock(&sdev->mutex); + return rval; +} + +static const struct v4l2_subdev_tuner_ops si4713_subdev_tuner_ops = { + .g_frequency = si4713_g_frequency, + .s_frequency = si4713_s_frequency, + .g_modulator = si4713_g_modulator, + .s_modulator = si4713_s_modulator, +}; + +static const struct v4l2_subdev_ops si4713_subdev_ops = { + .core = &si4713_subdev_core_ops, + .tuner = &si4713_subdev_tuner_ops, +}; + +/* + * I2C driver interface + */ +/* si4713_probe - probe for the device */ +static int si4713_probe(struct i2c_client *client, + const struct i2c_device_id *id) +{ + struct si4713_device *sdev; + int rval; + + sdev = kzalloc(sizeof *sdev, GFP_KERNEL); + if (!sdev) { + dev_err(&client->dev, "Failed to alloc video device.\n"); + rval = -ENOMEM; + goto exit; + } + + sdev->platform_data = client->dev.platform_data; + if (!sdev->platform_data) { + v4l2_err(&sdev->sd, "No platform data registered.\n"); + rval = -ENODEV; + goto free_sdev; + } + + v4l2_i2c_subdev_init(&sdev->sd, client, &si4713_subdev_ops); + + mutex_init(&sdev->mutex); + init_completion(&sdev->work); + + if (client->irq) { + rval = request_irq(client->irq, + si4713_handler, IRQF_TRIGGER_FALLING | IRQF_DISABLED, + client->name, sdev); + if (rval < 0) { + v4l2_err(&sdev->sd, "Could not request IRQ\n"); + goto free_sdev; + } + v4l2_dbg(1, debug, &sdev->sd, "IRQ requested.\n"); + } else { + v4l2_warn(&sdev->sd, "IRQ not configured. Using timeouts.\n"); + } + + rval = si4713_initialize(sdev); + if (rval < 0) { + v4l2_err(&sdev->sd, "Failed to probe device information.\n"); + goto free_irq; + } + + return 0; + +free_irq: + if (client->irq) + free_irq(client->irq, sdev); +free_sdev: + kfree(sdev); +exit: + return rval; +} + +/* si4713_remove - remove the device */ +static int si4713_remove(struct i2c_client *client) +{ + struct v4l2_subdev *sd = i2c_get_clientdata(client); + struct si4713_device *sdev = to_si4713_device(sd); + + if (sdev->power_state) + si4713_set_power_state(sdev, POWER_DOWN); + + if (client->irq > 0) + free_irq(client->irq, sdev); + + v4l2_device_unregister_subdev(sd); + + kfree(sdev); + + return 0; +} + +/* si4713_i2c_driver - i2c driver interface */ +static const struct i2c_device_id si4713_id[] = { + { "si4713" , 0 }, + { }, +}; +MODULE_DEVICE_TABLE(i2c, si4713_id); + +static struct i2c_driver si4713_i2c_driver = { + .driver = { + .name = "si4713", + }, + .probe = si4713_probe, + .remove = si4713_remove, + .id_table = si4713_id, +}; + +/* Module Interface */ +static int __init si4713_module_init(void) +{ + return i2c_add_driver(&si4713_i2c_driver); +} + +static void __exit si4713_module_exit(void) +{ + i2c_del_driver(&si4713_i2c_driver); +} + +module_init(si4713_module_init); +module_exit(si4713_module_exit); + diff --git a/drivers/media/radio/si4713-i2c.h b/drivers/media/radio/si4713-i2c.h new file mode 100644 index 00000000000..faf8cff124f --- /dev/null +++ b/drivers/media/radio/si4713-i2c.h @@ -0,0 +1,237 @@ +/* + * drivers/media/radio/si4713-i2c.h + * + * Property and commands definitions for Si4713 radio transmitter chip. + * + * Copyright (c) 2008 Instituto Nokia de Tecnologia - INdT + * Contact: Eduardo Valentin <eduardo.valentin@nokia.com> + * + * This file is licensed under the terms of the GNU General Public License + * version 2. This program is licensed "as is" without any warranty of any + * kind, whether express or implied. + * + */ + +#ifndef SI4713_I2C_H +#define SI4713_I2C_H + +#include <media/v4l2-subdev.h> +#include <media/si4713.h> + +#define SI4713_PRODUCT_NUMBER 0x0D + +/* Command Timeouts */ +#define DEFAULT_TIMEOUT 500 +#define TIMEOUT_SET_PROPERTY 20 +#define TIMEOUT_TX_TUNE_POWER 30000 +#define TIMEOUT_TX_TUNE 110000 +#define TIMEOUT_POWER_UP 200000 + +/* + * Command and its arguments definitions + */ +#define SI4713_PWUP_CTSIEN (1<<7) +#define SI4713_PWUP_GPO2OEN (1<<6) +#define SI4713_PWUP_PATCH (1<<5) +#define SI4713_PWUP_XOSCEN (1<<4) +#define SI4713_PWUP_FUNC_TX 0x02 +#define SI4713_PWUP_FUNC_PATCH 0x0F +#define SI4713_PWUP_OPMOD_ANALOG 0x50 +#define SI4713_PWUP_OPMOD_DIGITAL 0x0F +#define SI4713_PWUP_NARGS 2 +#define SI4713_PWUP_NRESP 1 +#define SI4713_CMD_POWER_UP 0x01 + +#define SI4713_GETREV_NRESP 9 +#define SI4713_CMD_GET_REV 0x10 + +#define SI4713_PWDN_NRESP 1 +#define SI4713_CMD_POWER_DOWN 0x11 + +#define SI4713_SET_PROP_NARGS 5 +#define SI4713_SET_PROP_NRESP 1 +#define SI4713_CMD_SET_PROPERTY 0x12 + +#define SI4713_GET_PROP_NARGS 3 +#define SI4713_GET_PROP_NRESP 4 +#define SI4713_CMD_GET_PROPERTY 0x13 + +#define SI4713_GET_STATUS_NRESP 1 +#define SI4713_CMD_GET_INT_STATUS 0x14 + +#define SI4713_CMD_PATCH_ARGS 0x15 +#define SI4713_CMD_PATCH_DATA 0x16 + +#define SI4713_MAX_FREQ 10800 +#define SI4713_MIN_FREQ 7600 +#define SI4713_TXFREQ_NARGS 3 +#define SI4713_TXFREQ_NRESP 1 +#define SI4713_CMD_TX_TUNE_FREQ 0x30 + +#define SI4713_MAX_POWER 120 +#define SI4713_MIN_POWER 88 +#define SI4713_MAX_ANTCAP 191 +#define SI4713_MIN_ANTCAP 0 +#define SI4713_TXPWR_NARGS 4 +#define SI4713_TXPWR_NRESP 1 +#define SI4713_CMD_TX_TUNE_POWER 0x31 + +#define SI4713_TXMEA_NARGS 4 +#define SI4713_TXMEA_NRESP 1 +#define SI4713_CMD_TX_TUNE_MEASURE 0x32 + +#define SI4713_INTACK_MASK 0x01 +#define SI4713_TXSTATUS_NARGS 1 +#define SI4713_TXSTATUS_NRESP 8 +#define SI4713_CMD_TX_TUNE_STATUS 0x33 + +#define SI4713_OVERMOD_BIT (1 << 2) +#define SI4713_IALH_BIT (1 << 1) +#define SI4713_IALL_BIT (1 << 0) +#define SI4713_ASQSTATUS_NARGS 1 +#define SI4713_ASQSTATUS_NRESP 5 +#define SI4713_CMD_TX_ASQ_STATUS 0x34 + +#define SI4713_RDSBUFF_MODE_MASK 0x87 +#define SI4713_RDSBUFF_NARGS 7 +#define SI4713_RDSBUFF_NRESP 6 +#define SI4713_CMD_TX_RDS_BUFF 0x35 + +#define SI4713_RDSPS_PSID_MASK 0x1F +#define SI4713_RDSPS_NARGS 5 +#define SI4713_RDSPS_NRESP 1 +#define SI4713_CMD_TX_RDS_PS 0x36 + +#define SI4713_CMD_GPO_CTL 0x80 +#define SI4713_CMD_GPO_SET 0x81 + +/* + * Bits from status response + */ +#define SI4713_CTS (1<<7) +#define SI4713_ERR (1<<6) +#define SI4713_RDS_INT (1<<2) +#define SI4713_ASQ_INT (1<<1) +#define SI4713_STC_INT (1<<0) + +/* + * Property definitions + */ +#define SI4713_GPO_IEN 0x0001 +#define SI4713_DIG_INPUT_FORMAT 0x0101 +#define SI4713_DIG_INPUT_SAMPLE_RATE 0x0103 +#define SI4713_REFCLK_FREQ 0x0201 +#define SI4713_REFCLK_PRESCALE 0x0202 +#define SI4713_TX_COMPONENT_ENABLE 0x2100 +#define SI4713_TX_AUDIO_DEVIATION 0x2101 +#define SI4713_TX_PILOT_DEVIATION 0x2102 +#define SI4713_TX_RDS_DEVIATION 0x2103 +#define SI4713_TX_LINE_INPUT_LEVEL 0x2104 +#define SI4713_TX_LINE_INPUT_MUTE 0x2105 +#define SI4713_TX_PREEMPHASIS 0x2106 +#define SI4713_TX_PILOT_FREQUENCY 0x2107 +#define SI4713_TX_ACOMP_ENABLE 0x2200 +#define SI4713_TX_ACOMP_THRESHOLD 0x2201 +#define SI4713_TX_ACOMP_ATTACK_TIME 0x2202 +#define SI4713_TX_ACOMP_RELEASE_TIME 0x2203 +#define SI4713_TX_ACOMP_GAIN 0x2204 +#define SI4713_TX_LIMITER_RELEASE_TIME 0x2205 +#define SI4713_TX_ASQ_INTERRUPT_SOURCE 0x2300 +#define SI4713_TX_ASQ_LEVEL_LOW 0x2301 +#define SI4713_TX_ASQ_DURATION_LOW 0x2302 +#define SI4713_TX_ASQ_LEVEL_HIGH 0x2303 +#define SI4713_TX_ASQ_DURATION_HIGH 0x2304 +#define SI4713_TX_RDS_INTERRUPT_SOURCE 0x2C00 +#define SI4713_TX_RDS_PI 0x2C01 +#define SI4713_TX_RDS_PS_MIX 0x2C02 +#define SI4713_TX_RDS_PS_MISC 0x2C03 +#define SI4713_TX_RDS_PS_REPEAT_COUNT 0x2C04 +#define SI4713_TX_RDS_PS_MESSAGE_COUNT 0x2C05 +#define SI4713_TX_RDS_PS_AF 0x2C06 +#define SI4713_TX_RDS_FIFO_SIZE 0x2C07 + +#define PREEMPHASIS_USA 75 +#define PREEMPHASIS_EU 50 +#define PREEMPHASIS_DISABLED 0 +#define FMPE_USA 0x00 +#define FMPE_EU 0x01 +#define FMPE_DISABLED 0x02 + +#define POWER_UP 0x01 +#define POWER_DOWN 0x00 + +struct rds_info { + u32 pi; +#define MAX_RDS_PTY 31 + u32 pty; +#define MAX_RDS_DEVIATION 90000 + u32 deviation; +/* + * PSNAME is known to be defined as 8 character sized (RDS Spec). + * However, there is receivers which scroll PSNAME 8xN sized. + */ +#define MAX_RDS_PS_NAME 96 + u8 ps_name[MAX_RDS_PS_NAME + 1]; +/* + * MAX_RDS_RADIO_TEXT is known to be defined as 32 (2A group) or 64 (2B group) + * character sized (RDS Spec). + * However, there is receivers which scroll them as well. + */ +#define MAX_RDS_RADIO_TEXT 384 + u8 radio_text[MAX_RDS_RADIO_TEXT + 1]; + u32 enabled; +}; + +struct limiter_info { +#define MAX_LIMITER_RELEASE_TIME 102390 + u32 release_time; +#define MAX_LIMITER_DEVIATION 90000 + u32 deviation; + u32 enabled; +}; + +struct pilot_info { +#define MAX_PILOT_DEVIATION 90000 + u32 deviation; +#define MAX_PILOT_FREQUENCY 19000 + u32 frequency; + u32 enabled; +}; + +struct acomp_info { +#define MAX_ACOMP_RELEASE_TIME 1000000 + u32 release_time; +#define MAX_ACOMP_ATTACK_TIME 5000 + u32 attack_time; +#define MAX_ACOMP_THRESHOLD 0 +#define MIN_ACOMP_THRESHOLD (-40) + s32 threshold; +#define MAX_ACOMP_GAIN 20 + u32 gain; + u32 enabled; +}; + +/* + * si4713_device - private data + */ +struct si4713_device { + /* v4l2_subdev and i2c reference (v4l2_subdev priv data) */ + struct v4l2_subdev sd; + /* private data structures */ + struct mutex mutex; + struct completion work; + struct si4713_platform_data *platform_data; + struct rds_info rds_info; + struct limiter_info limiter_info; + struct pilot_info pilot_info; + struct acomp_info acomp_info; + u32 frequency; + u32 preemphasis; + u32 mute; + u32 power_level; + u32 power_state; + u32 antenna_capacitor; + u32 stereo; + u32 tune_rnl; +}; +#endif /* ifndef SI4713_I2C_H */ |