gpu: nvgpu: Make LTC disabling common code

Refactor the sync_debugfs LTC HAL op so that the logic to enable
or disable LTC goes to common code nvgpu_ltc_sync_enabled() and
the LTC HAL set_enabled only performs the hardware register access.

Create a new common function nvgpu_init_ltc_support() to initialize
the LTC software variable, and move hardware initialization of LTC to
be called from it.

JIRA NVGPU-62

Change-Id: Ib1cf4f5b83ca3dac08407464ed56a732e0a33923
Signed-off-by: Terje Bergstrom <tbergstrom@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1528262
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>

1 files changed, 2 insertions, 8 deletions

diff --git a/drivers/gpu/nvgpu/gk20a/mm_gk20a.h b/drivers/gpu/nvgpu/gk20a/mm_gk20a.h
index 2f35df71..c56b28bb 100644
--- a/drivers/gpu/nvgpu/gk20a/mm_gk20a.h
+++ b/drivers/gpu/nvgpu/gk20a/mm_gk20a.h
@@ -245,14 +245,8 @@ struct mm_gk20a {
         bool sw_ready;
         int physical_bits;
         bool use_full_comp_tag_line;
-#ifdef CONFIG_DEBUG_FS
-        u32 ltc_enabled;
-#if LINUX_VERSION_CODE < KERNEL_VERSION(4,4,0)
-        u32 ltc_enabled_debug;
-#else
-        bool ltc_enabled_debug;
-#endif
-#endif
+        bool ltc_enabled_current;
+        bool ltc_enabled_target;
 #if LINUX_VERSION_CODE < KERNEL_VERSION(4,4,0)
         u32 bypass_smmu;
         u32 disable_bigpage;