147 lines
3.9 KiB
C
147 lines
3.9 KiB
C
/* dvb-usb-firmware.c is part of the DVB USB library.
|
|
*
|
|
* Copyright (C) 2004-6 Patrick Boettcher (patrick.boettcher@desy.de)
|
|
* see dvb-usb-init.c for copyright information.
|
|
*
|
|
* This file contains functions for downloading the firmware to Cypress FX 1 and 2 based devices.
|
|
*
|
|
* FIXME: This part does actually not belong to dvb-usb, but to the usb-subsystem.
|
|
*/
|
|
#include "dvb-usb-common.h"
|
|
|
|
#include <linux/usb.h>
|
|
|
|
struct usb_cypress_controller {
|
|
int id;
|
|
const char *name; /* name of the usb controller */
|
|
u16 cpu_cs_register; /* needs to be restarted, when the firmware has been downloaded. */
|
|
};
|
|
|
|
static struct usb_cypress_controller cypress[] = {
|
|
{ .id = DEVICE_SPECIFIC, .name = "Device specific", .cpu_cs_register = 0 },
|
|
{ .id = CYPRESS_AN2135, .name = "Cypress AN2135", .cpu_cs_register = 0x7f92 },
|
|
{ .id = CYPRESS_AN2235, .name = "Cypress AN2235", .cpu_cs_register = 0x7f92 },
|
|
{ .id = CYPRESS_FX2, .name = "Cypress FX2", .cpu_cs_register = 0xe600 },
|
|
};
|
|
|
|
/*
|
|
* load a firmware packet to the device
|
|
*/
|
|
static int usb_cypress_writemem(struct usb_device *udev,u16 addr,u8 *data, u8 len)
|
|
{
|
|
return usb_control_msg(udev, usb_sndctrlpipe(udev,0),
|
|
0xa0, USB_TYPE_VENDOR, addr, 0x00, data, len, 5000);
|
|
}
|
|
|
|
int usb_cypress_load_firmware(struct usb_device *udev, const struct firmware *fw, int type)
|
|
{
|
|
struct hexline hx;
|
|
u8 reset;
|
|
int ret,pos=0;
|
|
|
|
/* stop the CPU */
|
|
reset = 1;
|
|
if ((ret = usb_cypress_writemem(udev,cypress[type].cpu_cs_register,&reset,1)) != 1)
|
|
err("could not stop the USB controller CPU.");
|
|
|
|
while ((ret = dvb_usb_get_hexline(fw,&hx,&pos)) > 0) {
|
|
deb_fw("writing to address 0x%04x (buffer: 0x%02x %02x)\n",hx.addr,hx.len,hx.chk);
|
|
ret = usb_cypress_writemem(udev,hx.addr,hx.data,hx.len);
|
|
|
|
if (ret != hx.len) {
|
|
err("error while transferring firmware "
|
|
"(transferred size: %d, block size: %d)",
|
|
ret,hx.len);
|
|
ret = -EINVAL;
|
|
break;
|
|
}
|
|
}
|
|
if (ret < 0) {
|
|
err("firmware download failed at %d with %d",pos,ret);
|
|
return ret;
|
|
}
|
|
|
|
if (ret == 0) {
|
|
/* restart the CPU */
|
|
reset = 0;
|
|
if (ret || usb_cypress_writemem(udev,cypress[type].cpu_cs_register,&reset,1) != 1) {
|
|
err("could not restart the USB controller CPU.");
|
|
ret = -EINVAL;
|
|
}
|
|
} else
|
|
ret = -EIO;
|
|
|
|
return ret;
|
|
}
|
|
EXPORT_SYMBOL(usb_cypress_load_firmware);
|
|
|
|
int dvb_usb_download_firmware(struct usb_device *udev, struct dvb_usb_device_properties *props)
|
|
{
|
|
int ret;
|
|
const struct firmware *fw = NULL;
|
|
|
|
if ((ret = request_firmware(&fw, props->firmware, &udev->dev)) != 0) {
|
|
err("did not find the firmware file. (%s) "
|
|
"Please see linux/Documentation/dvb/ for more details on firmware-problems. (%d)",
|
|
props->firmware,ret);
|
|
return ret;
|
|
}
|
|
|
|
info("downloading firmware from file '%s'",props->firmware);
|
|
|
|
switch (props->usb_ctrl) {
|
|
case CYPRESS_AN2135:
|
|
case CYPRESS_AN2235:
|
|
case CYPRESS_FX2:
|
|
ret = usb_cypress_load_firmware(udev, fw, props->usb_ctrl);
|
|
break;
|
|
case DEVICE_SPECIFIC:
|
|
if (props->download_firmware)
|
|
ret = props->download_firmware(udev,fw);
|
|
else {
|
|
err("BUG: driver didn't specified a download_firmware-callback, although it claims to have a DEVICE_SPECIFIC one.");
|
|
ret = -EINVAL;
|
|
}
|
|
break;
|
|
default:
|
|
ret = -EINVAL;
|
|
break;
|
|
}
|
|
|
|
release_firmware(fw);
|
|
return ret;
|
|
}
|
|
|
|
int dvb_usb_get_hexline(const struct firmware *fw, struct hexline *hx,
|
|
int *pos)
|
|
{
|
|
u8 *b = (u8 *) &fw->data[*pos];
|
|
int data_offs = 4;
|
|
if (*pos >= fw->size)
|
|
return 0;
|
|
|
|
memset(hx,0,sizeof(struct hexline));
|
|
|
|
hx->len = b[0];
|
|
|
|
if ((*pos + hx->len + 4) >= fw->size)
|
|
return -EINVAL;
|
|
|
|
hx->addr = le16_to_cpu( *((u16 *) &b[1]) );
|
|
hx->type = b[3];
|
|
|
|
if (hx->type == 0x04) {
|
|
/* b[4] and b[5] are the Extended linear address record data field */
|
|
hx->addr |= (b[4] << 24) | (b[5] << 16);
|
|
/* hx->len -= 2;
|
|
data_offs += 2; */
|
|
}
|
|
memcpy(hx->data,&b[data_offs],hx->len);
|
|
hx->chk = b[hx->len + data_offs];
|
|
|
|
*pos += hx->len + 5;
|
|
|
|
return *pos;
|
|
}
|
|
EXPORT_SYMBOL(dvb_usb_get_hexline);
|