gpu: nvgpu: Set compression page per SoC

Compression page size varies depending on architecture. Make it
129kB on gk20a and gm20b.

Also export some common functions from gm20b.

Bug 1592495

Change-Id: Ifb1c5b15d25fa961dab097021080055fc385fecd
Signed-off-by: Terje Bergstrom <tbergstrom@nvidia.com>
Reviewed-on: http://git-master/r/673790

1 files changed, 1 insertions, 1 deletions

diff --git a/drivers/gpu/nvgpu/gk20a/gk20a.c b/drivers/gpu/nvgpu/gk20a/gk20a.c
index 6c18c895..57d5f09a 100644
--- a/drivers/gpu/nvgpu/gk20a/gk20a.c
+++ b/drivers/gpu/nvgpu/gk20a/gk20a.c
@@ -1788,7 +1788,7 @@ int gk20a_init_gpu_characteristics(struct gk20a *g)
         gpu->bus_type = NVGPU_GPU_BUS_TYPE_AXI; /* always AXI for now */
 
         gpu->big_page_size = g->mm.pmu.vm.big_page_size;
-        gpu->compression_page_size = g->mm.pmu.vm.compression_page_size;
+        gpu->compression_page_size = g->ops.fb.compression_page_size(g);
         gpu->pde_coverage_bit_count = g->mm.pmu.vm.pde_stride_shift;
 
         gpu->available_big_page_sizes = gpu->big_page_size;