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author | Jamie Fox <jamie.fox@arm.com> | 2018-10-01 14:39:07 +0100 |
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committer | Liviu Dudau <Liviu.Dudau@arm.com> | 2018-10-02 11:59:36 +0100 |
commit | 1f23a56a46b81de50eb8b898f06296ca06720a99 (patch) | |
tree | 25490ab45a08de2cdc67f4821e4d7de28eceb7e9 /drivers/bluetooth/hci_h5.c | |
parent | 187f7f21b2a268f6eb157bd8bb703de6b0064f17 (diff) | |
download | linux-1f23a56a46b81de50eb8b898f06296ca06720a99.tar.gz |
drm/malidp: Enable MMU prefetch on Mali-DP650
Mali-DP650 supports warming up the SMMU translations, by sending
requsts to the SMMU before a buffer is read.
There are two modes supported:
- PARTIAL: could be enabled when the buffer is composed of 4K or 64K
pages, the display hardware will send a configurable number of
requests before the actual reading.
- FULL: could be enabled when the buffer is composed of 1M or 2M
pages, the display hardware will send requests before reading for
all pages composing the buffer.
This patch adds a mechanism for detecting the page size and set the
MMU prefetch mode if possible.
Changes since v1:
- For imported buffers use the already populated
drm_gem_cma_object.sgt instead of calling
driver.gem_prime_get_sg_table, which works just for buffers
allocated through the gem_cma API.
Signed-off-by: Jamie Fox <jamie.fox@arm.com>
Signed-off-by: Alexandru Gheorghe <alexandru-cosmin.gheorghe@arm.com>
Acked-by: Liviu Dudau <liviu.dudau@arm.com>
[rebased and re-ordered functions]
Signed-off-by: Liviu Dudau <liviu.dudau@arm.com>
Diffstat (limited to 'drivers/bluetooth/hci_h5.c')
0 files changed, 0 insertions, 0 deletions