1 // SPDX-License-Identifier: GPL-2.0
2 /* dvb-usb-firmware.c is part of the DVB USB library.
4  * Copyright (C) 2004-6 Patrick Boettcher (patrick.boettcher@posteo.de)
5  * see dvb-usb-init.c for copyright information.
7  * This file contains functions for downloading the firmware to Cypress FX 1 and 2 based devices.
9  * FIXME: This part does actually not belong to dvb-usb, but to the usb-subsystem.
11 #include "dvb-usb-common.h"
17 	const char *name;       /* name of the usb controller */  member
18 	u16 cpu_cs_register;    /* needs to be restarted, when the firmware has been downloaded. */
22 	{ .id = DEVICE_SPECIFIC, .name = "Device specific", .cpu_cs_register = 0 },
23 	{ .id = CYPRESS_AN2135,  .name = "Cypress AN2135",  .cpu_cs_register = 0x7f92 },
24 	{ .id = CYPRESS_AN2235,  .name = "Cypress AN2235",  .cpu_cs_register = 0x7f92 },
25 	{ .id = CYPRESS_FX2,     .name = "Cypress FX2",     .cpu_cs_register = 0xe600 },
29  * load a firmware packet to the device
37 int usb_cypress_load_firmware(struct usb_device *udev, const struct firmware *fw, int type)  in usb_cypress_load_firmware()
46 		return -ENOMEM;  in usb_cypress_load_firmware()
55 		deb_fw("writing to address 0x%04x (buffer: 0x%02x %02x)\n", hx->addr, hx->len, hx->chk);  in usb_cypress_load_firmware()
56 		ret = usb_cypress_writemem(udev, hx->addr, hx->data, hx->len);  in usb_cypress_load_firmware()
58 		if (ret != hx->len) {  in usb_cypress_load_firmware()
59 			err("error while transferring firmware (transferred size: %d, block size: %d)",  in usb_cypress_load_firmware()
60 				ret, hx->len);  in usb_cypress_load_firmware()
61 			ret = -EINVAL;  in usb_cypress_load_firmware()
66 		err("firmware download failed at %d with %d",pos,ret);  in usb_cypress_load_firmware()
76 			ret = -EINVAL;  in usb_cypress_load_firmware()
79 		ret = -EIO;  in usb_cypress_load_firmware()
91 	const struct firmware *fw = NULL;  in dvb_usb_download_firmware()
93 	if ((ret = request_firmware(&fw, props->firmware, &udev->dev)) != 0) {  in dvb_usb_download_firmware()
94 …err("did not find the firmware file '%s' (status %d). You can use <kernel_dir>/scripts/get_dvb_fir…  in dvb_usb_download_firmware()
95 			props->firmware,ret);  in dvb_usb_download_firmware()
99 	info("downloading firmware from file '%s'",props->firmware);  in dvb_usb_download_firmware()
101 	switch (props->usb_ctrl) {  in dvb_usb_download_firmware()
105 			ret = usb_cypress_load_firmware(udev, fw, props->usb_ctrl);  in dvb_usb_download_firmware()
108 			if (props->download_firmware)  in dvb_usb_download_firmware()
109 				ret = props->download_firmware(udev,fw);  in dvb_usb_download_firmware()
111 …err("BUG: driver didn't specified a download_firmware-callback, although it claims to have a DEVIC…  in dvb_usb_download_firmware()
112 				ret = -EINVAL;  in dvb_usb_download_firmware()
116 			ret = -EINVAL;  in dvb_usb_download_firmware()
124 int dvb_usb_get_hexline(const struct firmware *fw, struct hexline *hx,  in dvb_usb_get_hexline()
127 	u8 *b = (u8 *) &fw->data[*pos];  in dvb_usb_get_hexline()
129 	if (*pos >= fw->size)  in dvb_usb_get_hexline()
134 	hx->len  = b[0];  in dvb_usb_get_hexline()
136 	if ((*pos + hx->len + 4) >= fw->size)  in dvb_usb_get_hexline()
137 		return -EINVAL;  in dvb_usb_get_hexline()
139 	hx->addr = b[1] | (b[2] << 8);  in dvb_usb_get_hexline()
140 	hx->type = b[3];  in dvb_usb_get_hexline()
142 	if (hx->type == 0x04) {  in dvb_usb_get_hexline()
144 		hx->addr |= (b[4] << 24) | (b[5] << 16);  in dvb_usb_get_hexline()
145 /*		hx->len -= 2;  in dvb_usb_get_hexline()
148 	memcpy(hx->data,&b[data_offs],hx->len);  in dvb_usb_get_hexline()
149 	hx->chk = b[hx->len + data_offs];  in dvb_usb_get_hexline()
151 	*pos += hx->len + 5;  in dvb_usb_get_hexline()