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Staging: comedi: usbdux[fast] firmware upload changes

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usbdux and usbduxfast upload now their firmware via the firmware kernel
meachanism. No udev rules are needed for that except the default ones.
The firmware will usually be loaded from /lib/firmware. Upload via
comedi_config is still possible for static comedi devices
(comedi_num_legacy_minors>0).

Frank, thanks for the example code which sped up rewriting of the code
substantially.

From: Bernd Porr <BerndPorr@f2s.com>
Cc: Ian Abbott <abbotti@mev.co.uk>
Cc: Frank Mori Hess <fmhess@users.sourceforge.net>
Cc: David Schleef <ds@schleef.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Bernd Porr 2008-12-08 23:30:13 +00:00 committed by Greg Kroah-Hartman
parent c28264dac4
commit 6742c0af2e
2 changed files with 153 additions and 84 deletions
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168
drivers/staging/comedi/drivers/usbdux.c
View file

@ -1,4 +1,4 @@
#define DRIVER_VERSION "v2.1"
#define DRIVER_VERSION "v2.2"
#define DRIVER_AUTHOR "Bernd Porr, BerndPorr@f2s.com"
#define DRIVER_DESC "Stirling/ITL USB-DUX -- Bernd.Porr@f2s.com"
/*
@ -25,8 +25,8 @@ Driver: usbdux
Description: University of Stirling USB DAQ & INCITE Technology Limited
Devices: [ITL] USB-DUX (usbdux.o)
Author: Bernd Porr <BerndPorr@f2s.com>
Updated: 25 Nov 2007
Status: Testing
Updated: 8 Dec 2008
Status: Stable
Configuration options:
You have to upload firmware with the -i option. The
firmware is usually installed under /usr/share/usb or
@ -79,6 +79,7 @@ sampling rate. If you sample two channels you get 4kHz and so on.
* 1.2: added PWM suport via EP4
* 2.0: PWM seems to be stable and is not interfering with the other functions
* 2.1: changed PWM API
* 2.2: added firmware kernel request to fix an udev problem
*
*/
@ -94,6 +95,7 @@ sampling rate. If you sample two channels you get 4kHz and so on.
#include <linux/smp_lock.h>
#include <linux/fcntl.h>
#include <linux/compiler.h>
#include <linux/firmware.h>
#include "../comedidev.h"
@ -718,31 +720,29 @@ static int usbduxsub_start(struct usbduxsub *usbduxsub)
int errcode = 0;
uint8_t local_transfer_buffer[16];
if (usbduxsub->probed) {
/* 7f92 to zero */
local_transfer_buffer[0] = 0;
errcode = usb_control_msg(usbduxsub->usbdev,
/* create a pipe for a control transfer */
usb_sndctrlpipe(usbduxsub->usbdev, 0),
/* bRequest, "Firmware" */
USBDUXSUB_FIRMWARE,
/* bmRequestType */
VENDOR_DIR_OUT,
/* Value */
USBDUXSUB_CPUCS,
/* Index */
0x0000,
/* address of the transfer buffer */
local_transfer_buffer,
/* Length */
1,
/* Timeout */
EZTIMEOUT);
if (errcode < 0) {
dev_err(&usbduxsub->interface->dev,
"comedi_: control msg failed (start)\n");
return errcode;
}
/* 7f92 to zero */
local_transfer_buffer[0] = 0;
errcode = usb_control_msg(usbduxsub->usbdev,
/* create a pipe for a control transfer */
usb_sndctrlpipe(usbduxsub->usbdev, 0),
/* bRequest, "Firmware" */
USBDUXSUB_FIRMWARE,
/* bmRequestType */
VENDOR_DIR_OUT,
/* Value */
USBDUXSUB_CPUCS,
/* Index */
0x0000,
/* address of the transfer buffer */
local_transfer_buffer,
/* Length */
1,
/* Timeout */
EZTIMEOUT);
if (errcode < 0) {
dev_err(&usbduxsub->interface->dev,
"comedi_: control msg failed (start)\n");
return errcode;
}
return 0;
}
@ -752,28 +752,27 @@ static int usbduxsub_stop(struct usbduxsub *usbduxsub)
int errcode = 0;
uint8_t local_transfer_buffer[16];
if (usbduxsub->probed) {
/* 7f92 to one */
local_transfer_buffer[0] = 1;
errcode = usb_control_msg(usbduxsub->usbdev,
usb_sndctrlpipe(usbduxsub->usbdev, 0),
/* bRequest, "Firmware" */
USBDUXSUB_FIRMWARE,
/* bmRequestType */
VENDOR_DIR_OUT,
/* Value */
USBDUXSUB_CPUCS,
/* Index */
0x0000, local_transfer_buffer,
/* Length */
1,
/* Timeout */
EZTIMEOUT);
if (errcode < 0) {
dev_err(&usbduxsub->interface->dev,
"comedi_: control msg failed (stop)\n");
return errcode;
}
/* 7f92 to one */
local_transfer_buffer[0] = 1;
errcode = usb_control_msg(usbduxsub->usbdev,
usb_sndctrlpipe(usbduxsub->usbdev, 0),
/* bRequest, "Firmware" */
USBDUXSUB_FIRMWARE,
/* bmRequestType */
VENDOR_DIR_OUT,
/* Value */
USBDUXSUB_CPUCS,
/* Index */
0x0000, local_transfer_buffer,
/* Length */
1,
/* Timeout */
EZTIMEOUT);
if (errcode < 0) {
dev_err(&usbduxsub->interface->dev,
"comedi_: control msg failed (stop)\n");
return errcode;
}
return 0;
}
@ -784,13 +783,7 @@ static int usbduxsub_upload(struct usbduxsub *usbduxsub,
{
int errcode;
if (usbduxsub->probed) {
dev_dbg(&usbduxsub->interface->dev,
"comedi%d: usbdux: uploading %d bytes"
" to addr %d, first byte=%d.\n",
usbduxsub->comedidev->minor, len,
startAddr, local_transfer_buffer[0]);
errcode = usb_control_msg(usbduxsub->usbdev,
errcode = usb_control_msg(usbduxsub->usbdev,
usb_sndctrlpipe(usbduxsub->usbdev, 0),
/* brequest, firmware */
USBDUXSUB_FIRMWARE,
@ -806,16 +799,12 @@ static int usbduxsub_upload(struct usbduxsub *usbduxsub,
len,
/* timeout */
EZTIMEOUT);
dev_dbg(&usbduxsub->interface->dev,
"comedi_: result=%d\n", errcode);
if (errcode < 0) {
dev_err(&usbduxsub->interface->dev,
"comedi_: upload failed\n");
return errcode;
}
} else {
/* no device on the bus for this index */
return -EFAULT;
dev_dbg(&usbduxsub->interface->dev,
"comedi_: result=%d\n", errcode);
if (errcode < 0) {
dev_err(&usbduxsub->interface->dev,
"comedi_: upload failed\n");
return errcode;
}
return 0;
}
@ -2292,7 +2281,7 @@ static unsigned hex2unsigned(char *h)
#define FIRMWARE_MAX_LEN 0x2000
/* taken from David Brownell's fxload and adjusted for this driver */
static int read_firmware(struct usbduxsub *usbduxsub, void *firmwarePtr,
static int read_firmware(struct usbduxsub *usbduxsub, const void *firmwarePtr,
long size)
{
struct device *dev = &usbduxsub->interface->dev;
@ -2399,6 +2388,34 @@ static int read_firmware(struct usbduxsub *usbduxsub, void *firmwarePtr,
return res;
}
static void usbdux_firmware_request_complete_handler(const struct firmware *fw,
void *context)
{
struct usbduxsub *usbduxsub_tmp = context;
struct usb_device *usbdev = usbduxsub_tmp->usbdev;
int ret;
if (fw == NULL) {
dev_err(&usbdev->dev,
"Firmware complete handler without firmware!\n");
return;
}
/*
* we need to upload the firmware here because fw will be
* freed once we've left this function
*/
ret = read_firmware(usbduxsub_tmp, fw->data, fw->size);
if (ret) {
dev_err(&usbdev->dev,
"Could not upload firmware (err=%d)\n",
ret);
return;
}
comedi_usb_auto_config(usbdev, BOARDNAME);
}
/* allocate memory for the urbs and initialise them */
static int usbduxsub_probe(struct usb_interface *uinterf,
const struct usb_device_id *id)
@ -2407,6 +2424,7 @@ static int usbduxsub_probe(struct usb_interface *uinterf,
struct device *dev = &uinterf->dev;
int i;
int index;
int ret;
dev_dbg(dev, "comedi_: usbdux_: "
"finding a free structure for the usb-device\n");
@ -2641,6 +2659,19 @@ static int usbduxsub_probe(struct usb_interface *uinterf,
/* we've reached the bottom of the function */
usbduxsub[index].probed = 1;
up(&start_stop_sem);
ret = request_firmware_nowait(THIS_MODULE,
FW_ACTION_HOTPLUG,
"usbdux_firmware.hex",
&udev->dev,
usbduxsub + index,
usbdux_firmware_request_complete_handler);
if (ret) {
dev_err(dev, "Could not load firmware (err=%d)\n", ret);
return ret;
}
dev_info(dev, "comedi_: usbdux%d "
"has been successfully initialised.\n", index);
/* success */
@ -2662,6 +2693,7 @@ static void usbduxsub_disconnect(struct usb_interface *intf)
"comedi_: BUG! called with wrong ptr!!!\n");
return;
}
comedi_usb_auto_unconfig(udev);
down(&start_stop_sem);
down(&usbduxsub_tmp->sem);
tidy_up(usbduxsub_tmp);

69
drivers/staging/comedi/drivers/usbduxfast.c
View file

@ -33,9 +33,12 @@
* 1MHz/16ch=62.5kHz
* 0.99: Ian Abbott pointed out a bug which has been corrected. Thanks!
* 0.99a: added external trigger.
* 1.00: added firmware kernel request to the driver which fixed
* udev coldplug problem
*/
#include <linux/kernel.h>
#include <linux/firmware.h>
#include <linux/module.h>
#include <linux/init.h>
#include <linux/slab.h>
@ -48,7 +51,7 @@
#include "../comedidev.h"
#define DRIVER_VERSION "v0.99a"
#define DRIVER_VERSION "v1.0"
#define DRIVER_AUTHOR "Bernd Porr, BerndPorr@f2s.com"
#define DRIVER_DESC "USB-DUXfast, BerndPorr@f2s.com"
#define BOARDNAME "usbduxfast"
@ -444,9 +447,6 @@ static int usbduxfastsub_start(struct usbduxfastsub_s *udfs)
int ret;
unsigned char local_transfer_buffer[16];
if (!udfs->probed)
return 0;
/* 7f92 to zero */
local_transfer_buffer[0] = 0;
ret = usb_control_msg(udfs->usbdev,
@ -471,9 +471,6 @@ static int usbduxfastsub_stop(struct usbduxfastsub_s *udfs)
int ret;
unsigned char local_transfer_buffer[16];
if (!udfs->probed)
return 0;
/* 7f92 to one */
local_transfer_buffer[0] = 1;
ret = usb_control_msg(udfs->usbdev,
@ -500,10 +497,6 @@ static int usbduxfastsub_upload(struct usbduxfastsub_s *udfs,
{
int ret;
if (!udfs->probed)
/* no device on the bus for this index */
return -EFAULT;
#ifdef CONFIG_COMEDI_DEBUG
printk(KERN_DEBUG "comedi%d: usbduxfast: uploading %d bytes",
udfs->comedidev->minor, len);
@ -1396,8 +1389,8 @@ static unsigned hex2unsigned(char *h)
/*
* taken from David Brownell's fxload and adjusted for this driver
*/
static int read_firmware(struct usbduxfastsub_s *udfs, void *firmwarePtr,
long size)
static int read_firmware(struct usbduxfastsub_s *udfs, const void *firmwarePtr,
long size)
{
int i = 0;
unsigned char *fp = (char *)firmwarePtr;
@ -1538,6 +1531,32 @@ static void tidy_up(struct usbduxfastsub_s *udfs)
udfs->ai_cmd_running = 0;
}
static void usbduxfast_firmware_request_complete_handler(const struct firmware *fw,
void *context)
{
struct usbduxfastsub_s *usbduxfastsub_tmp = context;
struct usb_device *usbdev = usbduxfastsub_tmp->usbdev;
int ret;
if (fw == NULL)
return;
/*
* we need to upload the firmware here because fw will be
* freed once we've left this function
*/
ret = read_firmware(usbduxfastsub_tmp, fw->data, fw->size);
if (ret) {
dev_err(&usbdev->dev,
"Could not upload firmware (err=%d)\n",
ret);
return;
}
comedi_usb_auto_config(usbdev, BOARDNAME);
}
/*
* allocate memory for the urbs and initialise them
*/
@ -1547,6 +1566,7 @@ static int usbduxfastsub_probe(struct usb_interface *uinterf,
struct usb_device *udev = interface_to_usbdev(uinterf);
int i;
int index;
int ret;
if (udev->speed != USB_SPEED_HIGH) {
printk(KERN_ERR "comedi_: usbduxfast_: This driver needs"
@ -1644,6 +1664,20 @@ static int usbduxfastsub_probe(struct usb_interface *uinterf,
/* we've reached the bottom of the function */
usbduxfastsub[index].probed = 1;
up(&start_stop_sem);
ret = request_firmware_nowait(THIS_MODULE,
FW_ACTION_HOTPLUG,
"usbduxfast_firmware.hex",
&udev->dev,
usbduxfastsub + index,
usbduxfast_firmware_request_complete_handler);
if (ret) {
dev_err(&udev->dev, "could not load firmware (err=%d)\n",
ret);
return ret;
}
printk(KERN_INFO "comedi_: usbduxfast%d has been successfully "
"initialized.\n", index);
/* success */
@ -1665,6 +1699,9 @@ static void usbduxfastsub_disconnect(struct usb_interface *intf)
"ptr!!!\n");
return;
}
comedi_usb_auto_unconfig(udev);
down(&start_stop_sem);
down(&udfs->sem);
tidy_up(udfs);
@ -1714,10 +1751,10 @@ static int usbduxfast_attach(comedi_device *dev, comedi_devconfig *it)
/* trying to upload the firmware into the chip */
if (comedi_aux_data(it->options, 0) &&
it->options[COMEDI_DEVCONF_AUX_DATA_LENGTH]) {
it->options[COMEDI_DEVCONF_AUX_DATA_LENGTH]) {
read_firmware(&usbduxfastsub[index],
comedi_aux_data(it->options, 0),
it->options[COMEDI_DEVCONF_AUX_DATA_LENGTH]);
comedi_aux_data(it->options, 0),
it->options[COMEDI_DEVCONF_AUX_DATA_LENGTH]);
}
dev->board_name = BOARDNAME;