diff options
Diffstat (limited to 'drivers/media/radio/radio-si470x.c')
| -rw-r--r-- | drivers/media/radio/radio-si470x.c | 207 |
1 files changed, 132 insertions, 75 deletions
diff --git a/drivers/media/radio/radio-si470x.c b/drivers/media/radio/radio-si470x.c index 4dfed6aa2db..92c297796a9 100644 --- a/drivers/media/radio/radio-si470x.c +++ b/drivers/media/radio/radio-si470x.c @@ -5,8 +5,9 @@ * - 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) 2008 Tobias Lorenz <tobias.lorenz@gmx.net> + * 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 @@ -29,7 +30,7 @@ * 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> + * 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) @@ -104,6 +105,7 @@ * 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 @@ -114,10 +116,10 @@ /* driver definitions */ #define DRIVER_AUTHOR "Tobias Lorenz <tobias.lorenz@gmx.net>" #define DRIVER_NAME "radio-si470x" -#define DRIVER_KERNEL_VERSION KERNEL_VERSION(1, 0, 8) +#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 "1.0.8" +#define DRIVER_VERSION "1.0.9" /* kernel includes */ @@ -145,7 +147,7 @@ static struct usb_device_id si470x_usb_driver_id_table[] = { { 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) }, - /* DealExtreme USB Radio */ + /* 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 */ { } @@ -345,7 +347,7 @@ MODULE_PARM_DESC(rds_poll_time, "RDS poll time (ms): *40*"); /* Report 19: stream */ #define STREAM_REPORT_SIZE 3 -#define STREAM_REPORT 19 +#define STREAM_REPORT 19 /* Report 20: scratch */ #define SCRATCH_PAGE_SIZE 63 @@ -353,9 +355,13 @@ MODULE_PARM_DESC(rds_poll_time, "RDS poll time (ms): *40*"); #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 */ @@ -414,7 +420,7 @@ MODULE_PARM_DESC(rds_poll_time, "RDS poll time (ms): *40*"); /* bootloader commands */ #define GET_SW_VERSION_COMMAND 0x00 -#define SET_PAGE_COMMAND 0x01 +#define SET_PAGE_COMMAND 0x01 #define ERASE_PAGE_COMMAND 0x02 #define WRITE_PAGE_COMMAND 0x03 #define CRC_ON_PAGE_COMMAND 0x04 @@ -428,12 +434,6 @@ MODULE_PARM_DESC(rds_poll_time, "RDS poll time (ms): *40*"); #define COMMAND_FAILED 0x02 #define COMMAND_PENDING 0x03 -/* buffer sizes */ -#define COMMAND_BUFFER_SIZE 4 -#define RESPONSE_BUFFER_SIZE 2 -#define FLASH_BUFFER_SIZE 64 -#define CRC_BUFFER_SIZE 3 - /************************************************************************** @@ -465,6 +465,10 @@ struct si470x_device { unsigned int buf_size; unsigned int rd_index; unsigned int wr_index; + + /* scratch page */ + unsigned char software_version; + unsigned char hardware_version; }; @@ -480,7 +484,7 @@ struct si470x_device { /************************************************************************** - * General Driver Functions + * General Driver Functions - REGISTER_REPORTs **************************************************************************/ /* @@ -566,60 +570,6 @@ static int si470x_set_register(struct si470x_device *radio, int regnr) /* - * 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; -} - - -/* - * 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; -} - - -/* * si470x_set_chan - set the channel */ static int si470x_set_chan(struct si470x_device *radio, unsigned short chan) @@ -887,6 +837,70 @@ static int si470x_rds_on(struct si470x_device *radio) /************************************************************************** + * 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 **************************************************************************/ @@ -911,6 +925,35 @@ static int si470x_set_led_state(struct si470x_device *radio, /************************************************************************** + * 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 **************************************************************************/ @@ -1124,6 +1167,7 @@ static int si470x_fops_open(struct file *file) } if (radio->users == 1) { + /* start radio */ retval = si470x_start(radio); if (retval < 0) usb_autopm_put_interface(radio->intf); @@ -1165,6 +1209,7 @@ static int si470x_fops_release(struct file *file) /* cancel read processes */ wake_up_interruptible(&radio->read_queue); + /* stop radio */ retval = si470x_stop(radio); usb_autopm_put_interface(radio->intf); } @@ -1226,9 +1271,11 @@ static struct v4l2_queryctrl si470x_v4l2_queryctrl[] = { 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)); - sprintf(capability->bus_info, "USB"); + 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; @@ -1636,15 +1683,24 @@ static int si470x_usb_driver_probe(struct usb_interface *intf, sizeof(si470x_viddev_template)); video_set_drvdata(radio->videodev, radio); - /* show some infos about the specific device */ + /* show some infos about the specific si470x device */ if (si470x_get_all_registers(radio) < 0) { retval = -EIO; - goto err_all; + goto err_video; } printk(KERN_INFO DRIVER_NAME ": DeviceID=0x%4.4hx ChipID=0x%4.4hx\n", radio->registers[DEVICEID], radio->registers[CHIPID]); - /* check if firmware is current */ + /* 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 @@ -1657,7 +1713,7 @@ static int si470x_usb_driver_probe(struct usb_interface *intf, ": If you have some trouble using this driver,\n"); printk(KERN_WARNING DRIVER_NAME ": please report to V4L ML at " - "video4linux-list@redhat.com\n"); + "linux-media@vger.kernel.org\n"); } /* set initial frequency */ @@ -1671,7 +1727,7 @@ static int si470x_usb_driver_probe(struct usb_interface *intf, radio->buffer = kmalloc(radio->buf_size, GFP_KERNEL); if (!radio->buffer) { retval = -EIO; - goto err_all; + goto err_video; } /* rds buffer configuration */ @@ -1693,8 +1749,9 @@ static int si470x_usb_driver_probe(struct usb_interface *intf, return 0; err_all: - video_device_release(radio->videodev); kfree(radio->buffer); +err_video: + video_device_release(radio->videodev); err_radio: kfree(radio); err_initial: |