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Release 4.11 drivers/media/radio/si470x/radio-si470x-usb.c

/*
 *  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.
 */


/*
 * ToDo:
 * - add firmware download/update support
 */


/* driver definitions */

#define DRIVER_AUTHOR "Tobias Lorenz <tobias.lorenz@gmx.net>"

#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 <linux/slab.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) },
	/* Axentia ALERT FM USB Receiver */
	{ USB_DEVICE_AND_INTERFACE_INFO(0x12cf, 0x7111, 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


#define MAX_REPORT_SIZE		64



/**************************************************************************
 * Software/Hardware Versions from Scratch Page
 **************************************************************************/

#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 = 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; }

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/* * si470x_set_report - send a HID report */
static int si470x_set_report(struct si470x_device *radio, void *buf, int size) { unsigned char *report = 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; }

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/* * si470x_get_register - read register */
int si470x_get_register(struct si470x_device *radio, int regnr) { int retval; radio->usb_buf[0] = REGISTER_REPORT(regnr); retval = si470x_get_report(radio, radio->usb_buf, REGISTER_REPORT_SIZE); if (retval >= 0) radio->registers[regnr] = get_unaligned_be16(&radio->usb_buf[1]); return (retval < 0) ? -EINVAL : 0; }

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/* * si470x_set_register - write register */
int si470x_set_register(struct si470x_device *radio, int regnr) { int retval; radio->usb_buf[0] = REGISTER_REPORT(regnr); put_unaligned_be16(radio->registers[regnr], &radio->usb_buf[1]); retval = si470x_set_report(radio, radio->usb_buf, REGISTER_REPORT_SIZE); return (retval < 0) ? -EINVAL : 0; }

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/************************************************************************** * General Driver Functions - ENTIRE_REPORT **************************************************************************/ /* * si470x_get_all_registers - read entire registers */
static int si470x_get_all_registers(struct si470x_device *radio) { int retval; unsigned char regnr; radio->usb_buf[0] = ENTIRE_REPORT; retval = si470x_get_report(radio, radio->usb_buf, ENTIRE_REPORT_SIZE); if (retval >= 0) for (regnr = 0; regnr < RADIO_REGISTER_NUM; regnr++) radio->registers[regnr] = get_unaligned_be16( &radio->usb_buf[regnr * RADIO_REGISTER_SIZE + 1]); return (retval < 0) ? -EINVAL : 0; }

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/************************************************************************** * 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) { int retval; radio->usb_buf[0] = LED_REPORT; radio->usb_buf[1] = LED_COMMAND; radio->usb_buf[2] = led_state; retval = si470x_set_report(radio, radio->usb_buf, LED_REPORT_SIZE); return (retval < 0) ? -EINVAL : 0; }

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/************************************************************************** * 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) { int retval; radio->usb_buf[0] = SCRATCH_REPORT; retval = si470x_get_report(radio, radio->usb_buf, SCRATCH_REPORT_SIZE); if (retval < 0) dev_warn(&radio->intf->dev, "si470x_get_scratch: si470x_get_report returned %d\n", retval); else { radio->software_version = radio->usb_buf[1]; radio->hardware_version = radio->usb_buf[2]; } return (retval < 0) ? -EINVAL : 0; }

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Mauro Carvalho Chehab11.08%120.00%
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/************************************************************************** * 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; 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. */ } } /* Sometimes the device returns len 0 packets */ if (urb->actual_length != RDS_REPORT_SIZE) goto resubmit; radio->registers[STATUSRSSI] = get_unaligned_be16(&radio->int_in_buffer[1]); if (radio->registers[STATUSRSSI] & STATUSRSSI_STC) complete(&radio->completion); if ((radio->registers[SYSCONFIG1] & SYSCONFIG1_RDS)) { /* Update RDS registers with URB data */ for (regnr = 1; 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; } } radio->status_rssi_auto_update = radio->int_in_running; }

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int si470x_fops_open(struct file *file) { return v4l2_fh_open(file); }

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int si470x_fops_release(struct file *file) { return v4l2_fh_release(file); }

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static void si470x_usb_release(struct v4l2_device *v4l2_dev) { struct si470x_device *radio = container_of(v4l2_dev, struct si470x_device, v4l2_dev); usb_free_urb(radio->int_in_urb); v4l2_ctrl_handler_free(&radio->hdl); v4l2_device_unregister(&radio->v4l2_dev); kfree(radio->int_in_buffer); kfree(radio->buffer); kfree(radio->usb_buf); kfree(radio); }

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/************************************************************************** * 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->device_caps = V4L2_CAP_HW_FREQ_SEEK | V4L2_CAP_READWRITE | V4L2_CAP_TUNER | V4L2_CAP_RADIO | V4L2_CAP_RDS_CAPTURE; capability->capabilities = capability->device_caps | V4L2_CAP_DEVICE_CAPS; return 0; }

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static int si470x_start_usb(struct si470x_device *radio) { int retval; /* 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; } radio->status_rssi_auto_update = radio->int_in_running; /* start radio */ retval = si470x_start(radio); if (retval < 0) return retval; v4l2_ctrl_handler_setup(&radio->hdl); return retval; }

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/************************************************************************** * 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->usb_buf = kmalloc(MAX_REPORT_SIZE, GFP_KERNEL); if (radio->usb_buf == NULL) { retval = -ENOMEM; goto err_radio; } radio->usbdev = interface_to_usbdev(intf); radio->intf = intf; radio->band = 1; /* Default to 76 - 108 MHz */ mutex_init(&radio->lock); init_completion(&radio->completion); 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 (usb_endpoint_is_int_in(endpoint)) 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_usbbuf; } 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_usbbuf; } radio->int_in_urb = usb_alloc_urb(0, GFP_KERNEL); if (!radio->int_in_urb) { retval = -ENOMEM; goto err_intbuffer; } radio->v4l2_dev.release = si470x_usb_release; /* * The si470x SiLabs reference design uses the same USB IDs as * 'Thanko's Raremono' si4734 based receiver. So check here which we * have: attempt to read the device ID from the si470x: the lower 12 * bits should be 0x0242 for the si470x. * * We use this check to determine which device we are dealing with. */ if (id->idVendor == 0x10c4 && id->idProduct == 0x818a) { retval = usb_control_msg(radio->usbdev, usb_rcvctrlpipe(radio->usbdev, 0), HID_REQ_GET_REPORT, USB_TYPE_CLASS | USB_RECIP_INTERFACE | USB_DIR_IN, 1, 2, radio->usb_buf, 3, 500); if (retval != 3 || (get_unaligned_be16(&radio->usb_buf[1]) & 0xfff) != 0x0242) { dev_info(&intf->dev, "this is not a si470x device.\n"); retval = -ENODEV; goto err_urb; } } retval = v4l2_device_register(&intf->dev, &radio->v4l2_dev); if (retval < 0) { dev_err(&intf->dev, "couldn't register v4l2_device\n"); goto err_urb; } v4l2_ctrl_handler_init(&radio->hdl, 2); v4l2_ctrl_new_std(&radio->hdl, &si470x_ctrl_ops, V4L2_CID_AUDIO_MUTE, 0, 1, 1, 1); v4l2_ctrl_new_std(&radio->hdl, &si470x_ctrl_ops, V4L2_CID_AUDIO_VOLUME, 0, 15, 1, 15); if (radio->hdl.error) { retval = radio->hdl.error; dev_err(&intf->dev, "couldn't register control\n"); goto err_dev; } radio->videodev = si470x_viddev_template; radio->videodev.ctrl_handler = &radio->hdl; radio->videodev.lock = &radio->lock; radio->videodev.v4l2_dev = &radio->v4l2_dev; radio->videodev.release = video_device_release_empty; video_set_drvdata(&radio->videodev, radio); /* get device and chip versions */ if (si470x_get_all_registers(radio) < 0) { retval = -EIO; goto err_ctrl; } dev_info(&intf->dev, "DeviceID=0x%4.4hx ChipID=0x%4.4hx\n", radio->registers[DEVICEID], radio->registers[SI_CHIPID]); if ((radio->registers[SI_CHIPID] & SI_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[SI_CHIPID] & SI_CHIPID_FIRMWARE); version_warning = 1; } /* get software and hardware versions */ if (si470x_get_scratch_page_versions(radio) < 0) { retval = -EIO; goto err_ctrl; } dev_info(&intf->dev, "software version %d, hardware version %d\n", radio->software_version, radio->hardware_version); 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 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_ctrl; } /* rds buffer configuration */ radio->wr_index = 0; radio->rd_index = 0; init_waitqueue_head(&radio->read_queue); usb_set_intfdata(intf, radio); /* start radio */ retval = si470x_start_usb(radio); if (retval < 0) goto err_all; /* 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_err(&intf->dev, "Could not register video device\n"); goto err_all; } return 0; err_all: kfree(radio->buffer); err_ctrl: v4l2_ctrl_handler_free(&radio->hdl); err_dev: v4l2_device_unregister(&radio->v4l2_dev); err_urb: usb_free_urb(radio->int_in_urb); err_intbuffer: kfree(radio->int_in_buffer); err_usbbuf: kfree(radio->usb_buf); err_radio: kfree(radio); err_initial: return retval; }

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Tobias Lorenz949.49%17.69%
Hans de Goede262.62%215.38%
Alexey Khoroshilov90.91%17.69%
Mauro Carvalho Chehab80.81%215.38%
Himangi Saraogi30.30%17.69%
Total991100.00%13100.00%

/* * 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); dev_info(&intf->dev, "suspending now...\n"); /* 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); } /* cancel read processes */ wake_up_interruptible(&radio->read_queue); /* stop radio */ si470x_stop(radio); return 0; }

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Hans Verkuil5366.25%133.33%
Joonyoung Shim2733.75%266.67%
Total80100.00%3100.00%

/* * 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); int ret; dev_info(&intf->dev, "resuming now...\n"); /* start radio */ ret = si470x_start_usb(radio); if (ret == 0) v4l2_ctrl_handler_setup(&radio->hdl); return ret; }

Contributors

PersonTokensPropCommitsCommitProp
Joonyoung Shim2237.29%250.00%
Hans de Goede2237.29%125.00%
Hans Verkuil1525.42%125.00%
Total59100.00%4100.00%

/* * 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->lock); v4l2_device_disconnect(&radio->v4l2_dev); video_unregister_device(&radio->videodev); usb_set_intfdata(intf, NULL); mutex_unlock(&radio->lock); v4l2_device_put(&radio->v4l2_dev); }

Contributors

PersonTokensPropCommitsCommitProp
Joonyoung Shim4566.18%120.00%
Hans Verkuil1623.53%240.00%
Darren Jenkins57.35%120.00%
Mauro Carvalho Chehab22.94%120.00%
Total68100.00%5100.00%

/* * si470x_usb_driver - usb driver interface * * A note on suspend/resume: this driver had only empty suspend/resume * functions, and when I tried to test suspend/resume it always disconnected * instead of resuming (using my ADS InstantFM stick). So I've decided to * remove these callbacks until someone else with better hardware can * implement and test this. */ 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, .reset_resume = si470x_usb_driver_resume, .id_table = si470x_usb_driver_id_table, }; module_usb_driver(si470x_usb_driver); MODULE_LICENSE("GPL"); MODULE_AUTHOR(DRIVER_AUTHOR); MODULE_DESCRIPTION(DRIVER_DESC); MODULE_VERSION(DRIVER_VERSION);

Overall Contributors

PersonTokensPropCommitsCommitProp
Joonyoung Shim232470.83%312.50%
Hans Verkuil66620.30%520.83%
Hans de Goede1554.72%520.83%
Tobias Lorenz952.90%14.17%
Mauro Carvalho Chehab130.40%312.50%
Alexey Khoroshilov90.27%14.17%
Darren Jenkins50.15%14.17%
Julia Lawall50.15%14.17%
Himangi Saraogi30.09%14.17%
Tejun Heo30.09%14.17%
Greg Kroah-Hartman20.06%14.17%
Sakari Ailus10.03%14.17%
Total3281100.00%24100.00%
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