gpu: nvgpu: add debugfs to dump clocks

It attaches the neccesary namemap structures to the clock struct so we can enumerate the clock domains in the debugfs code in nvgpu-t18x.
the other is to add an accessor for the fields.

JIRA DNVGPU-98

Change-Id: I6e5c6e763b2b88daa1995f4136a9a7b33ea25b17
Signed-off-by: David Nieto <dmartineznie@nvidia.com>
Reviewed-on: http://git-master/r/1199083
Reviewed-on: http://git-master/r/1204016
(cherry picked from commit b9d95a45791b93ddc010d1aeddbe798d2a9705d4)
Reviewed-on: http://git-master/r/1227910
GVS: Gerrit_Virtual_Submit
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
Tested-by: Terje Bergstrom <tbergstrom@nvidia.com>

2 files changed, 9 insertions, 0 deletions

diff --git a/drivers/gpu/nvgpu/gk20a/clk_gk20a.h b/drivers/gpu/nvgpu/gk20a/clk_gk20a.h
index 8408f460..aefbc5d5 100644
--- a/drivers/gpu/nvgpu/gk20a/clk_gk20a.h
+++ b/drivers/gpu/nvgpu/gk20a/clk_gk20a.h
@@ -74,12 +74,16 @@ struct pll_parms {
         u32 iddq_exit_delay;
 };
 
+struct namemap_cfg;
+
 struct clk_gk20a {
         struct gk20a *g;
         struct clk *tegra_clk;
         struct pll gpc_pll;
         struct pll gpc_pll_last;
         struct mutex clk_mutex;
+        struct namemap_cfg *clk_namemap;
+        u32 namemap_num;
         bool sw_ready;
         bool clk_hw_on;
         bool debugfs_set;
diff --git a/drivers/gpu/nvgpu/gk20a/gk20a.h b/drivers/gpu/nvgpu/gk20a/gk20a.h
index edc4a0e1..f0849761 100644
--- a/drivers/gpu/nvgpu/gk20a/gk20a.h
+++ b/drivers/gpu/nvgpu/gk20a/gk20a.h
@@ -1116,6 +1116,11 @@ static inline u32 set_field(u32 val, u32 mask, u32 field)
         return ((val & ~mask) | field);
 }
 
+static inline u32 get_field(u32 reg, u32 mask)
+{
+        return (reg & mask);
+}
+
 /* invalidate channel lookup tlb */
 static inline void gk20a_gr_flush_channel_tlb(struct gr_gk20a *gr)
 {