Help to make a driver. ISDB-Tb

  Hi

El 02/05/11 10:06, Mauro Carvalho Chehab escribió:
> From this message:
> [ 14.288626] Frontend revision 255 is unknown - aborting.
>
> I suspect that the I2C gate needed to access the frontend is at the wrong state. That's why you're
> getting 0xff (255) value there.
I changed the value ".demod_address = 0x19" by ".demod_address = 0x10" 
and resolved

dmesg:
<6>[   10.639380] cx23885 driver version 0.0.2 loaded
<6>[   10.640125] cx23885 0000:02:00.0: PCI INT A -> GSI 19 (level, low) 
-> IRQ 19
<6>[   10.640310] CORE cx23885[0]: subsystem: 14f1:8502, board: Mygica 
X8507 [card=30,autodetected]
<6>[   12.533349] cx25840 5-0044: loaded v4l-cx23885-avcore-01.fw 
firmware (16382 bytes)
<6>[   12.542333] tuner 4-0061: chip found @ 0xc2 (cx23885[0])
<6>[   12.582949] xc5000 4-0061: creating new instance
<6>[   12.583643] xc5000: Successfully identified at address 0x61
<6>[   12.583645] xc5000: Firmware has not been loaded previously
<6>[   12.583727] cx23885[0]/0: registered device video1 [v4l2]
<6>[   12.589183] xc5000: waiting for firmware upload 
(dvb-fe-xc5000-1.6.114.fw)...
<7>[   12.610081] xc5000: firmware read 12401 bytes.
<6>[   12.610083] xc5000: firmware uploading...
<6>[   13.982005] xc5000: firmware upload complete...
<6>[   14.604101] cx23885_dvb_register() allocating 1 frontend(s)
<6>[   14.604106] cx23885[0]: cx23885 based dvb card
<7>[   14.631169] mb86a20s: mb86a20s_attach:
<6>[   14.631656] Detected a Fujitsu mb86a20s frontend
<6>[   14.631726] xc5000 4-0061: attaching existing instance
<6>[   14.632425] xc5000: Successfully identified at address 0x61
<6>[   14.632427] xc5000: Firmware has been loaded previously
<6>[   14.632431] DVB: registering new adapter (cx23885[0])
<4>[   14.632434] DVB: registering adapter 1 frontend 0 (Fujitsu 
mb86A20s)...
<6>[   14.632811] cx23885_dev_checkrevision() Hardware revision = 0xb0
<6>[   14.632819] cx23885[0]/0: found at 0000:02:00.0, rev: 2, irq: 19, 
latency: 0, mmio: 0xfd600000
<7>[   14.632827] cx23885 0000:02:00.0: setting latency timer to 64
<7>[   14.632918] cx23885 0000:02:00.0: irq 44 for MSI/MSI-X

Attached list of changes I made.

Results:

Analog TV can be seen, but no sound.
If I use xawtv or VLC the image is in the middle of the screen and there 
are stripes, as if interference. If I use tvtime will look good.

Digital television: not tune any channels with w-scan or gnome-dvb-setup.
But with the latter, it captures 2 weak signals, but I can not know 
which is.
Under windows also capture 2 channel and I'm in a place where the signal 
is low.
I'll try to have more signal strength.

If I run dmesg after scan channels I get the following:

[ 3474.858537] mb86a20s: mb86a20s_set_frontend:
[ 3474.858541] mb86a20s: mb86a20s_set_frontend: Calling tuner set parameters
[ 3474.981157] mb86a20s: mb86a20s_read_status:
[ 3474.981649] mb86a20s: mb86a20s_read_status: val = 2, status = 0x01
[ 3475.081746] mb86a20s: mb86a20s_read_status:
[ 3475.082241] mb86a20s: mb86a20s_read_status: val = 2, status = 0x01
[ 3475.182336] mb86a20s: mb86a20s_read_status:
[ 3475.182829] mb86a20s: mb86a20s_read_status: val = 2, status = 0x01

When detected signal with gnome-dvb-setup, sometimes gives this warning:

Message from syslogd@linux at May 4 01:48:38 ...
kernel:[ 3359.202289] do_IRQ: 2.145 No irq handler for vector (irq -1)

Thank you very much,

Alfredo

Help to make a driver. ISDB-Tb

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