1#ifndef _DVB_USB_M920X_H_
2#define _DVB_USB_M920X_H_
3
4#define DVB_USB_LOG_PREFIX "m920x"
5#include "dvb-usb.h"
6
7#define deb(args...)   dprintk(dvb_usb_m920x_debug,0x01,args)
8
9#define M9206_CORE	0x22
10#define M9206_RC_STATE	0xff51
11#define M9206_RC_KEY	0xff52
12#define M9206_RC_INIT1	0xff54
13#define M9206_RC_INIT2	0xff55
14#define M9206_FW_GO	0xff69
15
16#define M9206_I2C	0x23
17#define M9206_FILTER	0x25
18#define M9206_FW	0x30
19
20#define M9206_MAX_FILTERS 8
21
22/*
23sequences found in logs:
24[index value]
250x80 write addr
26(0x00 out byte)*
270x40 out byte
28
290x80 write addr
30(0x00 out byte)*
310x80 read addr
32(0x21 in byte)*
330x60 in byte
34
35this sequence works:
360x80 read addr
37(0x21 in byte)*
380x60 in byte
39
40Guess at API of the I2C function:
41I2C operation is done one byte at a time with USB control messages.  The
42index the messages is sent to is made up of a set of flags that control
43the I2C bus state:
440x80:  Send START condition.  After a START condition, one would normally
45       always send the 7-bit slave I2C address as the 7 MSB, followed by
46       the read/write bit as the LSB.
470x40:  Send STOP condition.  This should be set on the last byte of an
48       I2C transaction.
490x20:  Read a byte from the slave.  As opposed to writing a byte to the
50       slave.  The slave will normally not produce any data unless you
51       set the R/W bit to 1 when sending the slave's address after the
52       START condition.
530x01:  Respond with ACK, as opposed to a NACK.  For a multi-byte read,
54       the master should send an ACK, that is pull SDA low during the 9th
55       clock cycle, after every byte but the last.  This flags only makes
56       sense when bit 0x20 is set, indicating a read.
57
58What any other bits might mean, or how to get the slave's ACK/NACK
59response to a write, is unknown.
60*/
61
62struct m920x_state {
63	u16 filters[M9206_MAX_FILTERS];
64	int filtering_enabled;
65	int rep_count;
66};
67
68/* Initialisation data for the m920x
69 */
70
71struct m920x_inits {
72	u16 address;
73	u8  data;
74};
75
76#endif
77