mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-27 21:55:10 +07:00
f319ed911c
Due to the 80-cols restrictions, and latter due to checkpatch
warnings, several strings were broken into multiple lines. This
is not considered a good practice anymore, as it makes harder
to grep for strings at the source code.
As we're right now fixing other drivers due to KERN_CONT, we need
to be able to identify what printk strings don't end with a "\n".
It is a way easier to detect those if we don't break long lines.
So, join those continuation lines.
The patch was generated via the script below, and manually
adjusted if needed.
</script>
use Text::Tabs;
while (<>) {
if ($next ne "") {
$c=$_;
if ($c =~ /^\s+\"(.*)/) {
$c2=$1;
$next =~ s/\"\n$//;
$n = expand($next);
$funpos = index($n, '(');
$pos = index($c2, '",');
if ($funpos && $pos > 0) {
$s1 = substr $c2, 0, $pos + 2;
$s2 = ' ' x ($funpos + 1) . substr $c2, $pos + 2;
$s2 =~ s/^\s+//;
$s2 = ' ' x ($funpos + 1) . $s2 if ($s2 ne "");
print unexpand("$next$s1\n");
print unexpand("$s2\n") if ($s2 ne "");
} else {
print "$next$c2\n";
}
$next="";
next;
} else {
print $next;
}
$next="";
} else {
if (m/\"$/) {
if (!m/\\n\"$/) {
$next=$_;
next;
}
}
}
print $_;
}
</script>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
145 lines
3.9 KiB
C
145 lines
3.9 KiB
C
/* dvb-usb-firmware.c is part of the DVB USB library.
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*
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* Copyright (C) 2004-6 Patrick Boettcher (patrick.boettcher@posteo.de)
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* see dvb-usb-init.c for copyright information.
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*
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* This file contains functions for downloading the firmware to Cypress FX 1 and 2 based devices.
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*
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* FIXME: This part does actually not belong to dvb-usb, but to the usb-subsystem.
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*/
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#include "dvb-usb-common.h"
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#include <linux/usb.h>
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struct usb_cypress_controller {
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int id;
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const char *name; /* name of the usb controller */
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u16 cpu_cs_register; /* needs to be restarted, when the firmware has been downloaded. */
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};
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static struct usb_cypress_controller cypress[] = {
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{ .id = DEVICE_SPECIFIC, .name = "Device specific", .cpu_cs_register = 0 },
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{ .id = CYPRESS_AN2135, .name = "Cypress AN2135", .cpu_cs_register = 0x7f92 },
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{ .id = CYPRESS_AN2235, .name = "Cypress AN2235", .cpu_cs_register = 0x7f92 },
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{ .id = CYPRESS_FX2, .name = "Cypress FX2", .cpu_cs_register = 0xe600 },
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};
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/*
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* load a firmware packet to the device
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*/
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static int usb_cypress_writemem(struct usb_device *udev,u16 addr,u8 *data, u8 len)
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{
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return usb_control_msg(udev, usb_sndctrlpipe(udev,0),
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0xa0, USB_TYPE_VENDOR, addr, 0x00, data, len, 5000);
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}
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int usb_cypress_load_firmware(struct usb_device *udev, const struct firmware *fw, int type)
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{
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struct hexline hx;
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u8 reset;
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int ret,pos=0;
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/* stop the CPU */
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reset = 1;
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if ((ret = usb_cypress_writemem(udev,cypress[type].cpu_cs_register,&reset,1)) != 1)
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err("could not stop the USB controller CPU.");
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while ((ret = dvb_usb_get_hexline(fw,&hx,&pos)) > 0) {
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deb_fw("writing to address 0x%04x (buffer: 0x%02x %02x)\n",hx.addr,hx.len,hx.chk);
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ret = usb_cypress_writemem(udev,hx.addr,hx.data,hx.len);
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if (ret != hx.len) {
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err("error while transferring firmware (transferred size: %d, block size: %d)",
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ret,hx.len);
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ret = -EINVAL;
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break;
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}
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}
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if (ret < 0) {
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err("firmware download failed at %d with %d",pos,ret);
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return ret;
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}
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if (ret == 0) {
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/* restart the CPU */
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reset = 0;
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if (ret || usb_cypress_writemem(udev,cypress[type].cpu_cs_register,&reset,1) != 1) {
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err("could not restart the USB controller CPU.");
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ret = -EINVAL;
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}
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} else
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ret = -EIO;
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return ret;
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}
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EXPORT_SYMBOL(usb_cypress_load_firmware);
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int dvb_usb_download_firmware(struct usb_device *udev, struct dvb_usb_device_properties *props)
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{
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int ret;
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const struct firmware *fw = NULL;
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if ((ret = request_firmware(&fw, props->firmware, &udev->dev)) != 0) {
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err("did not find the firmware file. (%s) Please see linux/Documentation/dvb/ for more details on firmware-problems. (%d)",
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props->firmware,ret);
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return ret;
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}
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info("downloading firmware from file '%s'",props->firmware);
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switch (props->usb_ctrl) {
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case CYPRESS_AN2135:
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case CYPRESS_AN2235:
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case CYPRESS_FX2:
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ret = usb_cypress_load_firmware(udev, fw, props->usb_ctrl);
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break;
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case DEVICE_SPECIFIC:
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if (props->download_firmware)
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ret = props->download_firmware(udev,fw);
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else {
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err("BUG: driver didn't specified a download_firmware-callback, although it claims to have a DEVICE_SPECIFIC one.");
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ret = -EINVAL;
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}
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break;
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default:
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ret = -EINVAL;
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break;
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}
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release_firmware(fw);
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return ret;
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}
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int dvb_usb_get_hexline(const struct firmware *fw, struct hexline *hx,
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int *pos)
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{
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u8 *b = (u8 *) &fw->data[*pos];
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int data_offs = 4;
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if (*pos >= fw->size)
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return 0;
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memset(hx,0,sizeof(struct hexline));
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hx->len = b[0];
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if ((*pos + hx->len + 4) >= fw->size)
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return -EINVAL;
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hx->addr = b[1] | (b[2] << 8);
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hx->type = b[3];
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if (hx->type == 0x04) {
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/* b[4] and b[5] are the Extended linear address record data field */
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hx->addr |= (b[4] << 24) | (b[5] << 16);
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/* hx->len -= 2;
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data_offs += 2; */
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}
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memcpy(hx->data,&b[data_offs],hx->len);
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hx->chk = b[hx->len + data_offs];
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*pos += hx->len + 5;
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return *pos;
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}
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EXPORT_SYMBOL(dvb_usb_get_hexline);
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