gpu: nvgpu: add function to retrieve clk points

JIRA DNVGPU-123

Function will copy possible clock points for
a given master clock domain to pointer passed.
pointer with NULL value and count of zero can be passed
to query number of clock points for a given domain so that
memory can be allocated and function called again to
fill clock points

Change-Id: Iec6206f23789980036be99793599e934bd221035
Reviewed-on: http://git-master/r/1218912
(cherry picked from commit 9219697bff1e12deb605325055a02a7b387996e9)
Signed-off-by: Vijayakumar <vsubbu@nvidia.com>
Reviewed-on: http://git-master/r/1235055
Reviewed-by: Thomas Fleury <tfleury@nvidia.com>
GVS: Gerrit_Virtual_Submit
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>

1 files changed, 7 insertions, 0 deletions

diff --git a/drivers/gpu/nvgpu/clk/clk_prog.h b/drivers/gpu/nvgpu/clk/clk_prog.h
index 979d327d..be92b3fc 100644
--- a/drivers/gpu/nvgpu/clk/clk_prog.h
+++ b/drivers/gpu/nvgpu/clk/clk_prog.h
@@ -32,6 +32,12 @@ typedef u32 vf_lookup(struct gk20a *g, struct clk_pmupstate *pclk,
                         u8 *slave_clk_domain_idx, u16 *pclkmhz,
                         u32 *pvoltuv, u8 rail);
 
+typedef u32 get_fpoints(struct gk20a *g, struct clk_pmupstate *pclk,
+                        struct clk_prog_1x_master *p1xmaster,
+                        u32 *pfpointscount,
+                        u16 **ppfreqpointsinmhz, u8 rail);
+
+
 struct clk_progs {
         struct boardobjgrp_e255 super;
         u8 slave_entry_count;
@@ -58,6 +64,7 @@ struct clk_prog_1x_master {
         union ctrl_clk_clk_prog_1x_master_source_data source_data;
         vf_flatten *vfflatten;
         vf_lookup *vflookup;
+        get_fpoints *getfpoints;
 };
 
 struct clk_prog_1x_master_ratio {