tree 41cdb37fa4e424170bd7670e07ca0981c9f6c81f
parent 03f0de770eda7a3f2e3950ca9f15d73e1dfd4596
author Mikko Perttunen <mperttunen@nvidia.com> 1497482322 +0300
committer Thierry Reding <treding@nvidia.com> 1497529538 +0200

gpu: host1x: Refactor channel allocation code

This is largely a rewrite of the Host1x channel allocation code, bringing
several changes:

- The previous code could deadlock due to an interaction
  between the 'reflock' mutex and CDMA timeout handling.
  This gets rid of the mutex.
- Support for more than 32 channels, required for Tegra186
- General refactoring, including better encapsulation
  of channel ownership handling into channel.c

Signed-off-by: Mikko Perttunen <mperttunen@nvidia.com>
Reviewed-by: Dmitry Osipenko <digetx@gmail.com>
Tested-by: Dmitry Osipenko <digetx@gmail.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>