diff options
-rw-r--r-- | drivers/media/video/cx25840/cx25840-firmware.c | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/drivers/media/video/cx25840/cx25840-firmware.c b/drivers/media/video/cx25840/cx25840-firmware.c index 18dd3475358e..f59ced181c55 100644 --- a/drivers/media/video/cx25840/cx25840-firmware.c +++ b/drivers/media/video/cx25840/cx25840-firmware.c | |||
@@ -25,7 +25,17 @@ | |||
25 | #include "cx25840-core.h" | 25 | #include "cx25840-core.h" |
26 | 26 | ||
27 | #define FWFILE "v4l-cx25840.fw" | 27 | #define FWFILE "v4l-cx25840.fw" |
28 | #define FWSEND 1024 | 28 | |
29 | /* | ||
30 | * Mike Isely <isely@pobox.com> - The FWSEND parameter controls the | ||
31 | * size of the firmware chunks sent down the I2C bus to the chip. | ||
32 | * Previously this had been set to 1024 but unfortunately some I2C | ||
33 | * implementations can't transfer data in such big gulps. | ||
34 | * Specifically, the pvrusb2 driver has a hard limit of around 60 | ||
35 | * bytes, due to the encapsulation there of I2C traffic into USB | ||
36 | * messages. So we have to significantly reduce this parameter. | ||
37 | */ | ||
38 | #define FWSEND 48 | ||
29 | 39 | ||
30 | #define FWDEV(x) &((x)->adapter->dev) | 40 | #define FWDEV(x) &((x)->adapter->dev) |
31 | 41 | ||