Commit | Line | Data |
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d855497e MI |
1 | /* |
2 | * | |
d855497e MI |
3 | * |
4 | * Copyright (C) 2005 Mike Isely <isely@pobox.com> | |
5 | * Copyright (C) 2004 Aurelien Alleaume <slts@free.fr> | |
6 | * | |
7 | * This program is free software; you can redistribute it and/or modify | |
8 | * it under the terms of the GNU General Public License as published by | |
9 | * the Free Software Foundation; either version 2 of the License | |
10 | * | |
11 | * This program is distributed in the hope that it will be useful, | |
12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | * GNU General Public License for more details. | |
15 | * | |
16 | * You should have received a copy of the GNU General Public License | |
17 | * along with this program; if not, write to the Free Software | |
18 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
19 | * | |
20 | */ | |
21 | ||
5a0e3ad6 | 22 | #include <linux/slab.h> |
d855497e MI |
23 | #include "pvrusb2-eeprom.h" |
24 | #include "pvrusb2-hdw-internal.h" | |
25 | #include "pvrusb2-debug.h" | |
26 | ||
27 | #define trace_eeprom(...) pvr2_trace(PVR2_TRACE_EEPROM,__VA_ARGS__) | |
28 | ||
29 | ||
30 | ||
31 | /* | |
32 | ||
33 | Read and analyze data in the eeprom. Use tveeprom to figure out | |
34 | the packet structure, since this is another Hauppauge device and | |
25985edc | 35 | internally it has a family resemblance to ivtv-type devices |
d855497e MI |
36 | |
37 | */ | |
38 | ||
39 | #include <media/tveeprom.h> | |
40 | ||
41 | /* We seem to only be interested in the last 128 bytes of the EEPROM */ | |
42 | #define EEPROM_SIZE 128 | |
43 | ||
44 | /* Grab EEPROM contents, needed for direct method. */ | |
45 | static u8 *pvr2_eeprom_fetch(struct pvr2_hdw *hdw) | |
46 | { | |
47 | struct i2c_msg msg[2]; | |
48 | u8 *eeprom; | |
49 | u8 iadd[2]; | |
50 | u8 addr; | |
51 | u16 eepromSize; | |
52 | unsigned int offs; | |
53 | int ret; | |
54 | int mode16 = 0; | |
55 | unsigned pcnt,tcnt; | |
56 | eeprom = kmalloc(EEPROM_SIZE,GFP_KERNEL); | |
57 | if (!eeprom) { | |
58 | pvr2_trace(PVR2_TRACE_ERROR_LEGS, | |
59 | "Failed to allocate memory" | |
60 | " required to read eeprom"); | |
a0fd1cb1 | 61 | return NULL; |
d855497e MI |
62 | } |
63 | ||
64 | trace_eeprom("Value for eeprom addr from controller was 0x%x", | |
65 | hdw->eeprom_addr); | |
66 | addr = hdw->eeprom_addr; | |
67 | /* Seems that if the high bit is set, then the *real* eeprom | |
68 | address is shifted right now bit position (noticed this in | |
69 | newer PVR USB2 hardware) */ | |
70 | if (addr & 0x80) addr >>= 1; | |
71 | ||
72 | /* FX2 documentation states that a 16bit-addressed eeprom is | |
73 | expected if the I2C address is an odd number (yeah, this is | |
74 | strange but it's what they do) */ | |
75 | mode16 = (addr & 1); | |
76 | eepromSize = (mode16 ? 4096 : 256); | |
77 | trace_eeprom("Examining %d byte eeprom at location 0x%x" | |
78 | " using %d bit addressing",eepromSize,addr, | |
79 | mode16 ? 16 : 8); | |
80 | ||
81 | msg[0].addr = addr; | |
82 | msg[0].flags = 0; | |
83 | msg[0].len = mode16 ? 2 : 1; | |
84 | msg[0].buf = iadd; | |
85 | msg[1].addr = addr; | |
86 | msg[1].flags = I2C_M_RD; | |
87 | ||
88 | /* We have to do the actual eeprom data fetch ourselves, because | |
89 | (1) we're only fetching part of the eeprom, and (2) if we were | |
90 | getting the whole thing our I2C driver can't grab it in one | |
91 | pass - which is what tveeprom is otherwise going to attempt */ | |
92 | memset(eeprom,0,EEPROM_SIZE); | |
93 | for (tcnt = 0; tcnt < EEPROM_SIZE; tcnt += pcnt) { | |
94 | pcnt = 16; | |
95 | if (pcnt + tcnt > EEPROM_SIZE) pcnt = EEPROM_SIZE-tcnt; | |
96 | offs = tcnt + (eepromSize - EEPROM_SIZE); | |
97 | if (mode16) { | |
98 | iadd[0] = offs >> 8; | |
99 | iadd[1] = offs; | |
100 | } else { | |
101 | iadd[0] = offs; | |
102 | } | |
103 | msg[1].len = pcnt; | |
104 | msg[1].buf = eeprom+tcnt; | |
27c7b710 MI |
105 | if ((ret = i2c_transfer(&hdw->i2c_adap, |
106 | msg,ARRAY_SIZE(msg))) != 2) { | |
d855497e MI |
107 | pvr2_trace(PVR2_TRACE_ERROR_LEGS, |
108 | "eeprom fetch set offs err=%d",ret); | |
109 | kfree(eeprom); | |
a0fd1cb1 | 110 | return NULL; |
d855497e MI |
111 | } |
112 | } | |
113 | return eeprom; | |
114 | } | |
115 | ||
116 | ||
117 | /* Directly call eeprom analysis function within tveeprom. */ | |
118 | int pvr2_eeprom_analyze(struct pvr2_hdw *hdw) | |
119 | { | |
120 | u8 *eeprom; | |
121 | struct tveeprom tvdata; | |
122 | ||
123 | memset(&tvdata,0,sizeof(tvdata)); | |
124 | ||
125 | eeprom = pvr2_eeprom_fetch(hdw); | |
126 | if (!eeprom) return -EINVAL; | |
127 | ||
128 | { | |
129 | struct i2c_client fake_client; | |
130 | /* Newer version expects a useless client interface */ | |
131 | fake_client.addr = hdw->eeprom_addr; | |
132 | fake_client.adapter = &hdw->i2c_adap; | |
133 | tveeprom_hauppauge_analog(&fake_client,&tvdata,eeprom); | |
134 | } | |
135 | ||
136 | trace_eeprom("eeprom assumed v4l tveeprom module"); | |
137 | trace_eeprom("eeprom direct call results:"); | |
138 | trace_eeprom("has_radio=%d",tvdata.has_radio); | |
139 | trace_eeprom("tuner_type=%d",tvdata.tuner_type); | |
140 | trace_eeprom("tuner_formats=0x%x",tvdata.tuner_formats); | |
141 | trace_eeprom("audio_processor=%d",tvdata.audio_processor); | |
142 | trace_eeprom("model=%d",tvdata.model); | |
143 | trace_eeprom("revision=%d",tvdata.revision); | |
144 | trace_eeprom("serial_number=%d",tvdata.serial_number); | |
145 | trace_eeprom("rev_str=%s",tvdata.rev_str); | |
146 | hdw->tuner_type = tvdata.tuner_type; | |
56dcbfa0 | 147 | hdw->tuner_updated = !0; |
d855497e MI |
148 | hdw->serial_number = tvdata.serial_number; |
149 | hdw->std_mask_eeprom = tvdata.tuner_formats; | |
150 | ||
151 | kfree(eeprom); | |
152 | ||
153 | return 0; | |
154 | } | |
155 | ||
156 | /* | |
157 | Stuff for Emacs to see, in order to encourage consistent editing style: | |
158 | *** Local Variables: *** | |
159 | *** mode: c *** | |
160 | *** fill-column: 70 *** | |
161 | *** tab-width: 8 *** | |
162 | *** c-basic-offset: 8 *** | |
163 | *** End: *** | |
164 | */ |