staging: vchiq-core: get rid of is_master distinction

Browse source

VCHIQ bulk transfers are what most people call DMA transfers. The CPU
sends a list of physical addresses to the VideoCore which then access
the memory directly without the need for CPU interaction.  With this
setup we call the CPU the "slave" and the VideoCore the "master".

There seems to be an option to switch roles in vchiq. Which nobody is
using nor is properly implemented. So we get rid of the "is_master == 1"
option, and all the related code.

Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
Acked-by: Stefan Wahren <stefan.wahren@i2se.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

...

This commit is contained in:

Nicolas Saenz Julienne 2018-11-20 15:53:42 +01:00 • committed by Greg Kroah-Hartman

parent 44c1e1bcbc

commit 14f4d72fb7

3 changed files with 38 additions and 285 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

12

drivers/staging/vc04_services/interface/vchiq_arm/vchiq_2835_arm.c

View file

300

drivers/staging/vc04_services/interface/vchiq_arm/vchiq_core.c

View file

11

drivers/staging/vc04_services/interface/vchiq_arm/vchiq_core.h

View file