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776338e1 JS |
1 | /* dvb-usb-firmware.c is part of the DVB USB library. |
2 | * | |
99e44da7 | 3 | * Copyright (C) 2004-6 Patrick Boettcher (patrick.boettcher@posteo.de) |
776338e1 JS |
4 | * see dvb-usb-init.c for copyright information. |
5 | * | |
6 | * This file contains functions for downloading the firmware to Cypress FX 1 and 2 based devices. | |
7 | * | |
8 | * FIXME: This part does actually not belong to dvb-usb, but to the usb-subsystem. | |
9 | */ | |
10 | #include "dvb-usb-common.h" | |
11 | ||
776338e1 JS |
12 | #include <linux/usb.h> |
13 | ||
14 | struct usb_cypress_controller { | |
15 | int id; | |
16 | const char *name; /* name of the usb controller */ | |
17 | u16 cpu_cs_register; /* needs to be restarted, when the firmware has been downloaded. */ | |
18 | }; | |
19 | ||
20 | static struct usb_cypress_controller cypress[] = { | |
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21 | { .id = DEVICE_SPECIFIC, .name = "Device specific", .cpu_cs_register = 0 }, |
22 | { .id = CYPRESS_AN2135, .name = "Cypress AN2135", .cpu_cs_register = 0x7f92 }, | |
23 | { .id = CYPRESS_AN2235, .name = "Cypress AN2235", .cpu_cs_register = 0x7f92 }, | |
24 | { .id = CYPRESS_FX2, .name = "Cypress FX2", .cpu_cs_register = 0xe600 }, | |
776338e1 JS |
25 | }; |
26 | ||
27 | /* | |
28 | * load a firmware packet to the device | |
29 | */ | |
30 | static int usb_cypress_writemem(struct usb_device *udev,u16 addr,u8 *data, u8 len) | |
31 | { | |
32 | return usb_control_msg(udev, usb_sndctrlpipe(udev,0), | |
4302c15e | 33 | 0xa0, USB_TYPE_VENDOR, addr, 0x00, data, len, 5000); |
776338e1 JS |
34 | } |
35 | ||
f5373788 | 36 | int usb_cypress_load_firmware(struct usb_device *udev, const struct firmware *fw, int type) |
776338e1 | 37 | { |
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38 | struct hexline hx; |
39 | u8 reset; | |
40 | int ret,pos=0; | |
776338e1 | 41 | |
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42 | /* stop the CPU */ |
43 | reset = 1; | |
44 | if ((ret = usb_cypress_writemem(udev,cypress[type].cpu_cs_register,&reset,1)) != 1) | |
45 | err("could not stop the USB controller CPU."); | |
46 | ||
47 | while ((ret = dvb_usb_get_hexline(fw,&hx,&pos)) > 0) { | |
48 | deb_fw("writing to address 0x%04x (buffer: 0x%02x %02x)\n",hx.addr,hx.len,hx.chk); | |
49 | ret = usb_cypress_writemem(udev,hx.addr,hx.data,hx.len); | |
50 | ||
51 | if (ret != hx.len) { | |
52 | err("error while transferring firmware " | |
53 | "(transferred size: %d, block size: %d)", | |
54 | ret,hx.len); | |
55 | ret = -EINVAL; | |
56 | break; | |
57 | } | |
58 | } | |
59 | if (ret < 0) { | |
60 | err("firmware download failed at %d with %d",pos,ret); | |
776338e1 JS |
61 | return ret; |
62 | } | |
63 | ||
d3707add | 64 | if (ret == 0) { |
776338e1 JS |
65 | /* restart the CPU */ |
66 | reset = 0; | |
67 | if (ret || usb_cypress_writemem(udev,cypress[type].cpu_cs_register,&reset,1) != 1) { | |
68 | err("could not restart the USB controller CPU."); | |
69 | ret = -EINVAL; | |
70 | } | |
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71 | } else |
72 | ret = -EIO; | |
776338e1 | 73 | |
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74 | return ret; |
75 | } | |
f5373788 | 76 | EXPORT_SYMBOL(usb_cypress_load_firmware); |
0029ee14 | 77 | |
4d43e13f | 78 | int dvb_usb_download_firmware(struct usb_device *udev, struct dvb_usb_device_properties *props) |
d3707add PB |
79 | { |
80 | int ret; | |
81 | const struct firmware *fw = NULL; | |
82 | ||
83 | if ((ret = request_firmware(&fw, props->firmware, &udev->dev)) != 0) { | |
84 | err("did not find the firmware file. (%s) " | |
85 | "Please see linux/Documentation/dvb/ for more details on firmware-problems. (%d)", | |
86 | props->firmware,ret); | |
87 | return ret; | |
776338e1 | 88 | } |
776338e1 | 89 | |
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90 | info("downloading firmware from file '%s'",props->firmware); |
91 | ||
92 | switch (props->usb_ctrl) { | |
93 | case CYPRESS_AN2135: | |
94 | case CYPRESS_AN2235: | |
95 | case CYPRESS_FX2: | |
96 | ret = usb_cypress_load_firmware(udev, fw, props->usb_ctrl); | |
97 | break; | |
98 | case DEVICE_SPECIFIC: | |
99 | if (props->download_firmware) | |
100 | ret = props->download_firmware(udev,fw); | |
101 | else { | |
102 | err("BUG: driver didn't specified a download_firmware-callback, although it claims to have a DEVICE_SPECIFIC one."); | |
103 | ret = -EINVAL; | |
104 | } | |
105 | break; | |
106 | default: | |
107 | ret = -EINVAL; | |
108 | break; | |
109 | } | |
110 | ||
111 | release_firmware(fw); | |
776338e1 JS |
112 | return ret; |
113 | } | |
d3707add | 114 | |
136cafbf | 115 | int dvb_usb_get_hexline(const struct firmware *fw, struct hexline *hx, |
a22a6865 | 116 | int *pos) |
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117 | { |
118 | u8 *b = (u8 *) &fw->data[*pos]; | |
119 | int data_offs = 4; | |
120 | if (*pos >= fw->size) | |
121 | return 0; | |
122 | ||
123 | memset(hx,0,sizeof(struct hexline)); | |
124 | ||
125 | hx->len = b[0]; | |
126 | ||
127 | if ((*pos + hx->len + 4) >= fw->size) | |
128 | return -EINVAL; | |
129 | ||
637007fe | 130 | hx->addr = b[1] | (b[2] << 8); |
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131 | hx->type = b[3]; |
132 | ||
133 | if (hx->type == 0x04) { | |
134 | /* b[4] and b[5] are the Extended linear address record data field */ | |
135 | hx->addr |= (b[4] << 24) | (b[5] << 16); | |
136 | /* hx->len -= 2; | |
137 | data_offs += 2; */ | |
138 | } | |
139 | memcpy(hx->data,&b[data_offs],hx->len); | |
140 | hx->chk = b[hx->len + data_offs]; | |
141 | ||
142 | *pos += hx->len + 5; | |
143 | ||
144 | return *pos; | |
145 | } | |
136cafbf | 146 | EXPORT_SYMBOL(dvb_usb_get_hexline); |