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bf4afc53b7
This was done entirely with mindless brute force, using
git grep -l '\<k[vmz]*alloc_objs*(.*, GFP_KERNEL)' |
xargs sed -i 's/\(alloc_objs*(.*\), GFP_KERNEL)/\1)/'
to convert the new alloc_obj() users that had a simple GFP_KERNEL
argument to just drop that argument.
Note that due to the extreme simplicity of the scripting, any slightly
more complex cases spread over multiple lines would not be triggered:
they definitely exist, but this covers the vast bulk of the cases, and
the resulting diff is also then easier to check automatically.
For the same reason the 'flex' versions will be done as a separate
conversion.
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
132 lines
3.1 KiB
C
132 lines
3.1 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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/* cypress_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
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* and 2 based devices.
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*
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*/
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#include <linux/module.h>
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#include <linux/slab.h>
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#include <linux/usb.h>
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#include <linux/firmware.h>
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#include "cypress_firmware.h"
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struct usb_cypress_controller {
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u8 id;
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const char *name; /* name of the usb controller */
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u16 cs_reg; /* needs to be restarted,
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* when the firmware has been downloaded */
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};
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static const struct usb_cypress_controller cypress[] = {
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{ .id = CYPRESS_AN2135, .name = "Cypress AN2135", .cs_reg = 0x7f92 },
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{ .id = CYPRESS_AN2235, .name = "Cypress AN2235", .cs_reg = 0x7f92 },
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{ .id = CYPRESS_FX2, .name = "Cypress FX2", .cs_reg = 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,
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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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static int cypress_get_hexline(const struct firmware *fw,
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struct hexline *hx, 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
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* field */
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hx->addr |= (b[4] << 24) | (b[5] << 16);
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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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int cypress_load_firmware(struct usb_device *udev,
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const struct firmware *fw, int type)
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{
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struct hexline *hx;
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int ret, pos = 0;
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hx = kmalloc_obj(*hx);
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if (!hx)
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return -ENOMEM;
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/* stop the CPU */
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hx->data[0] = 1;
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ret = usb_cypress_writemem(udev, cypress[type].cs_reg, hx->data, 1);
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if (ret != 1) {
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dev_err(&udev->dev, "%s: CPU stop failed=%d\n",
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KBUILD_MODNAME, ret);
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ret = -EIO;
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goto err_kfree;
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}
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/* write firmware to memory */
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for (;;) {
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ret = cypress_get_hexline(fw, hx, &pos);
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if (ret < 0)
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goto err_kfree;
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else if (ret == 0)
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break;
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ret = usb_cypress_writemem(udev, hx->addr, hx->data, hx->len);
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if (ret < 0) {
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goto err_kfree;
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} else if (ret != hx->len) {
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dev_err(&udev->dev,
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"%s: error while transferring firmware (transferred size=%d, block size=%d)\n",
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KBUILD_MODNAME, ret, hx->len);
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ret = -EIO;
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goto err_kfree;
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}
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}
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/* start the CPU */
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hx->data[0] = 0;
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ret = usb_cypress_writemem(udev, cypress[type].cs_reg, hx->data, 1);
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if (ret != 1) {
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dev_err(&udev->dev, "%s: CPU start failed=%d\n",
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KBUILD_MODNAME, ret);
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ret = -EIO;
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goto err_kfree;
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}
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ret = 0;
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err_kfree:
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kfree(hx);
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return ret;
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}
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EXPORT_SYMBOL(cypress_load_firmware);
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MODULE_AUTHOR("Antti Palosaari <crope@iki.fi>");
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MODULE_DESCRIPTION("Cypress firmware download");
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MODULE_LICENSE("GPL");
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