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, 6 insertions, 0 deletions

diff --git a/drivers/gpu/nvgpu/gk20a/fb_gk20a.c b/drivers/gpu/nvgpu/gk20a/fb_gk20a.c
index d5b3fd87..568aed7a 100644
--- a/drivers/gpu/nvgpu/gk20a/fb_gk20a.c
+++ b/drivers/gpu/nvgpu/gk20a/fb_gk20a.c
@@ -42,10 +42,16 @@ static void gk20a_fb_set_mmu_page_size(struct gk20a *g)
         gk20a_writel(g, fb_mmu_ctrl_r(), fb_mmu_ctrl);
 }
 
+static int gk20a_fb_compression_page_size(struct gk20a *g)
+{
+        return SZ_128K;
+}
+
 void gk20a_init_fb(struct gpu_ops *gops)
 {
         gops->fb.reset = fb_gk20a_reset;
         gops->fb.set_mmu_page_size = gk20a_fb_set_mmu_page_size;
+        gops->fb.compression_page_size = gk20a_fb_compression_page_size;
         gk20a_init_uncompressed_kind_map();
         gk20a_init_kind_attr();
 }