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#define M9206_MAX_ADAPTERS 4
22
23/*
24sequences found in logs:
25[index value]
260x80 write addr
27(0x00 out byte)*
280x40 out byte
29
300x80 write addr
31(0x00 out byte)*
320x80 read addr
33(0x21 in byte)*
340x60 in byte
35
36this sequence works:
370x80 read addr
38(0x21 in byte)*
390x60 in byte
40
41Guess at API of the I2C function:
42I2C operation is done one byte at a time with USB control messages.  The
43index the messages is sent to is made up of a set of flags that control
44the I2C bus state:
450x80:  Send START condition.  After a START condition, one would normally
46       always send the 7-bit slave I2C address as the 7 MSB, followed by
47       the read/write bit as the LSB.
480x40:  Send STOP condition.  This should be set on the last byte of an
49       I2C transaction.
500x20:  Read a byte from the slave.  As opposed to writing a byte to the
51       slave.  The slave will normally not produce any data unless you
52       set the R/W bit to 1 when sending the slave's address after the
53       START condition.
540x01:  Respond with ACK, as opposed to a NACK.  For a multi-byte read,
55       the master should send an ACK, that is pull SDA low during the 9th
56       clock cycle, after every byte but the last.  This flags only makes
57       sense when bit 0x20 is set, indicating a read.
58
59What any other bits might mean, or how to get the slave's ACK/NACK
60response to a write, is unknown.
61*/
62
63struct m920x_state {
64	u16 filters[M9206_MAX_ADAPTERS][M9206_MAX_FILTERS];
65	int filtering_enabled[M9206_MAX_ADAPTERS];
66	int rep_count;
67};
68
69/* Initialisation data for the m920x
70 */
71
72struct m920x_inits {
73	u16 address;
74	u8  data;
75};
76
77#endif
78