| /* 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 }, |
| }; |
| |
| static int dvb_usb_get_hexline(const struct firmware *fw, struct hexline *hx, |
| int *pos); |
| |
| /* |
| * 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; |
| } |
| |
| static 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; |
| } |