diff options
Diffstat (limited to 'drivers/media/dvb/dvb-usb/m920x.h')
| -rw-r--r-- | drivers/media/dvb/dvb-usb/m920x.h | 32 |
1 files changed, 25 insertions, 7 deletions
diff --git a/drivers/media/dvb/dvb-usb/m920x.h b/drivers/media/dvb/dvb-usb/m920x.h index c354196ffe5..c5ef592cbfe 100644 --- a/drivers/media/dvb/dvb-usb/m920x.h +++ b/drivers/media/dvb/dvb-usb/m920x.h @@ -19,17 +19,35 @@ #define M9206_MAX_FILTERS 8 -#define M9206_I2C_TUNER 0 -#define M9206_I2C_DEMOD 1 -#define M9206_I2C_MAX 2 +/* +sequences found in logs: +[index value] +0x80 write addr +(0x00 out byte)* +0x40 out byte + +0x80 write addr +(0x00 out byte)* +0x80 read addr +(0x21 in byte)* +0x60 in byte + +this sequence works: +0x80 read addr +(0x21 in byte)* +0x60 in byte + +_my guess_: +0x80: begin i2c transfer using address. value=address<<1|(reading?1:0) +0x00: write byte +0x21: read byte, more to follow +0x40: write last byte of message sequence +0x60: read last byte of message sequence + */ struct m9206_state { u16 filters[M9206_MAX_FILTERS]; int filtering_enabled; int rep_count; - struct { - unsigned char addr; - unsigned char magic; - }i2c_r[M9206_I2C_MAX]; }; #endif |