1 # SPDX-License-Identifier: GPL-2.0-only 2 # 3 # DVB device configuration 4 # 5 6 config DVB_MMAP 7 bool "Enable DVB memory-mapped API (EXPERIMENTAL)" 8 depends on DVB_CORE 9 depends on VIDEO_DEV=y || VIDEO_DEV=DVB_CORE 10 select VIDEOBUF2_VMALLOC 11 help 12 This option enables DVB experimental memory-mapped API, which 13 reduces the number of context switches to read DVB buffers, as 14 the buffers can use mmap() syscalls. 15 16 Support for it is experimental. Use with care. If unsure, 17 say N. 18 19 config DVB_NET 20 bool "DVB Network Support" 21 default (NET && INET) 22 depends on NET && INET && DVB_CORE 23 help 24 This option enables DVB Network Support which is a part of the DVB 25 standard. It is used, for example, by automatic firmware updates used 26 on Set-Top-Boxes. It can also be used to access the Internet via the 27 DVB card, if the network provider supports it. 28 29 You may want to disable the network support on embedded devices. If 30 unsure say Y. 31 32 config DVB_MAX_ADAPTERS 33 int "maximum number of DVB/ATSC adapters" 34 depends on DVB_CORE 35 default 16 36 range 1 255 37 help 38 Maximum number of DVB/ATSC adapters. Increasing this number 39 increases the memory consumption of the DVB subsystem even 40 if a much lower number of DVB/ATSC adapters is present. 41 Only values in the range 4-32 are tested. 42 43 If you are unsure about this, use the default value 16 44 45 config DVB_DYNAMIC_MINORS 46 bool "Dynamic DVB minor allocation" 47 depends on DVB_CORE 48 default y 49 help 50 If you say Y here, the DVB subsystem will use dynamic minor 51 allocation for any device that uses the DVB major number. 52 This means that you can have more than 4 of a single type 53 of device (like demuxes and frontends) per adapter, but udev 54 will be required to manage the device nodes. 55 56 If you are unsure about this, say N here. 57 58 config DVB_DEMUX_SECTION_LOSS_LOG 59 bool "Enable DVB demux section packet loss log" 60 depends on DVB_CORE 61 help 62 Enable extra log messages meant to detect packet loss 63 inside the Kernel. 64 65 Should not be enabled on normal cases, as logs can 66 be very verbose. 67 68 If you are unsure about this, say N here. 69 70 config DVB_ULE_DEBUG 71 bool "Enable DVB net ULE packet debug messages" 72 depends on DVB_CORE 73 help 74 Enable extra log messages meant to detect problems while 75 handling DVB network ULE packet loss inside the Kernel. 76 77 Should not be enabled on normal cases, as logs can 78 be very verbose. 79 80 If you are unsure about this, say N here. 81