mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2025-02-27 21:21:05 +07:00
960de2cff4
When setting a control directly on a subdev node the VSP1 driver doesn't guarantee that the device is powered on. This leads to crashes when the control handlers writes to hardware registers. One easy way to fix this is to ensure that the device gets powered on when a subdev node is opened. However, this consumes power unnecessarily, as there's no need to power the device on when setting formats on the pipeline. Furthermore, control handler setup at entity init time suffers from the same problem as the device isn't powered on easier. Fix this by extend the entity base object to setup the control handler automatically when starting the stream. Entities must then skip writing to registers in the set control handler when not streaming, which can be tested with the new vsp1_entity_is_streaming() helper function. Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com> |
||
|---|---|---|
| .. | ||
| common | ||
| dvb-core | ||
| dvb-frontends | ||
| firewire | ||
| i2c | ||
| mmc | ||
| parport | ||
| pci | ||
| platform | ||
| radio | ||
| rc | ||
| tuners | ||
| usb | ||
| v4l2-core | ||
| Kconfig | ||
| Makefile | ||
| media-device.c | ||
| media-devnode.c | ||
| media-entity.c | ||