kernel/git/stable/linux.git/drivers/media/video/au0828, branch master

[media] rename most media/video usb drivers to media/usb

2012-08-15T19:25:07+00:00

Rename all USB drivers with their own directory under drivers/media/video into drivers/media/usb and update the building system. Signed-off-by: Mauro Carvalho Chehab

[media] common: move media/common/tuners to media/tuners

2012-08-14T02:40:28+00:00

Move the tuners one level up, as the "common" directory will be used by drivers that are shared between more than one driver. Signed-off-by: Mauro Carvalho Chehab

[media] move the dvb/frontends to drivers/media/dvb-frontends

2012-08-14T02:13:41+00:00

Raise the DVB frontends one level up, as the intention is to remove the drivers/media/dvb directory. Signed-off-by: Mauro Carvalho Chehab

[media] dvb: move the dvb core one level up

2012-08-14T02:08:14+00:00

just like the V4L2 core, move the DVB core to drivers/media, as the intention is to get rid of both "video" and "dvb" directories. Signed-off-by: Mauro Carvalho Chehab

[media] au0828: fix possible race condition in usage of dev->ctrlmsg

2012-08-11T15:37:55+00:00

The register read function is referencing the dev->ctrlmsg structure outside of the dev->mutex lock, which can cause corruption of the value if multiple callers are invoking au0828_readreg() simultaneously. Use a stack variable to hold the result, and copy the buffer returned by usb_control_msg() to that variable. In reality, the whole recv_control_msg() function can probably be collapsed into au0288_readreg() since it is the only caller. Also get rid of cmd_msg_dump() since the only case in which the function is ever called only is ever passed a single byte for the response (and it is already logged). Signed-off-by: Devin Heitmueller Signed-off-by: Mauro Carvalho Chehab

[media] au0828: make xc5000 firmware speedup apply to the xc5000c as well

2012-08-09T23:58:57+00:00

Make the firmware speedup work for the 5000c as well as the original xc5000. This cuts firmware load time in half. Thanks to John Casey at Hauppauge for loaning me a board for testing. Signed-off-by: Devin Heitmueller Signed-off-by: Mauro Carvalho Chehab

[media] au0828: fix a couple of missed edge cases for i2c gate with analog

2012-08-09T23:58:31+00:00

This patch addresses a couple of cases where I forgot to pop open the gate when in analog mode (a correlary to fix the change made in patch 1c58d5b4a5fca42dce5428bd79b9405878017735). Signed-off-by: Devin Heitmueller Signed-off-by: Mauro Carvalho Chehab

[media] au0828: tweak workaround for i2c clock stretching bug

2012-08-09T23:57:39+00:00

The hack I put in a couple of years ago to avoid clock stretching issues when talking to the xc5000 worked fine for writes, but intermittently fails for register reads, because the xc5000 may stretch the clock for longer between bytes (I was seeing cases of 21 us on the analyzer). The problem manifested itself as the xc5000 firmware version and PLL lock register intermittently showing garbage values. Slow down the i2c bus from 30 KHz to 20 KHz to accommodate. Signed-off-by: Devin Heitmueller Signed-off-by: Mauro Carvalho Chehab

[media] au0828: tune retry interval for i2c interaction

2012-08-09T23:41:03+00:00

Adjust the retry timeout and number of retries to speed up xc5000 firmware download. With this change it goes from 4.2 seconds to 2.9. The net time waited is pretty much the same, but we just poll more often. Tested at 250 KHz as well as 30 KHz. Signed-off-by: Devin Heitmueller Signed-off-by: Mauro Carvalho Chehab

[media] au0828: remove control buffer from send_control_msg

2012-08-09T23:40:20+00:00

There are no cases where a control message is ever sent to the au0828 with an actual buffer defined. Remove the reference to dev->ctrlmsg, which currently requires us to hold a mutex since it is shared with the read function. Signed-off-by: Devin Heitmueller Signed-off-by: Mauro Carvalho Chehab