platform: tegra: bwmgr: Add api for max iso eff

Add a new api which returns the dram efficiency at max
emc rate. This enabled ISO manager to calculate the max ISO bandwidth
supported for current DRAM configuration.

Bug 1675080

Change-Id: I2a04dddcd3774a304209fe476efcedcd9684a8ea
Signed-off-by: Ayoosh Bansal <ayooshb@nvidia.com>
Reviewed-on: http://git-master/r/823009
(cherry picked from commit 83c10061e800744962dbb176f5bd74694130b400)
Reviewed-on: http://git-master/r/829165
Reviewed-by: Automatic_Commit_Validation_User
GVS: Gerrit_Virtual_Submit
Reviewed-by: Alexander Van Brunt <avanbrunt@nvidia.com>

1 files changed, 1 insertions, 2 deletions

diff --git a/include/linux/platform/tegra/bwmgr_mc.h b/include/linux/platform/tegra/bwmgr_mc.h
index d30796b07..35f641f22 100644
--- a/include/linux/platform/tegra/bwmgr_mc.h
+++ b/include/linux/platform/tegra/bwmgr_mc.h
@@ -16,8 +16,6 @@
 
 #include <linux/types.h>
 
-extern int bwmgr_iso_bw_percentage;
-
 unsigned long bwmgr_apply_efficiency(
                 unsigned long bw, unsigned long iso_bw,
                 unsigned long emc_max, u64 usage_flags,
@@ -29,5 +27,6 @@ unsigned long bwmgr_freq_to_bw(unsigned long freq);
 unsigned long bwmgr_bw_to_freq(unsigned long bw);
 
 u32 bwmgr_dvfs_latency(u32 ufreq);
+int bwmgr_iso_bw_percentage_max(void);
 
 #endif /* __BWMGR_MC_H */