gpu: nvgpu: support to parse VF table

JIRA DNVGPU-123

function was added to retrieve V for F or
F for V for a given clock domain.
Clock domain can be master or slave.
F or V can be intermediate point between two
successive V or F values in VF table.
VF table should be cached before calling this function.
A F value below Fmin will return Vmin.
F > Fmax will return error
A V value above Vmax wil return F max.
A V value below Vmin will return error.

Change-Id: I28b4e8647510c6933e9e1204cfff31d74616e11a
Signed-off-by: Vijayakumar <vsubbu@nvidia.com>
Reviewed-on: http://git-master/r/1211234
(cherry-picked from commit 5b83b03f2454fbec8d49a064ed09b09c92d3e9fa)
Reviewed-on: http://git-master/r/1235054
Reviewed-by: Thomas Fleury <tfleury@nvidia.com>
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
Tested-by: Terje Bergstrom <tbergstrom@nvidia.com>

1 files changed, 5 insertions, 2 deletions

diff --git a/drivers/gpu/nvgpu/clk/clk_vf_point.h b/drivers/gpu/nvgpu/clk/clk_vf_point.h
index 306bec41..15920066 100644
--- a/drivers/gpu/nvgpu/clk/clk_vf_point.h
+++ b/drivers/gpu/nvgpu/clk/clk_vf_point.h
@@ -46,8 +46,8 @@ struct clk_vf_point_freq {
 };
 
 #define CLK_CLK_VF_POINT_GET(pclk, idx)                                        \
-        ((struct clk_vf_point)BOARDOBJGRP_OBJ_GET_BY_IDX(                      \
-                &pclk->vfpoints.super.super, (u8)(idx)))
+        ((struct clk_vf_point *)BOARDOBJGRP_OBJ_GET_BY_IDX(                    \
+                &pclk->clk_vf_pointobjs.super.super, (u8)(idx)))
 
 #define clkvfpointpairget(pvfpoint)                                            \
         (&((pvfpoint)->pair))
@@ -66,6 +66,9 @@ struct clk_vf_point_freq {
         CTRL_CLK_VF_PAIR_VOLTAGE_UV_SET(clkvfpointpairget(pvfpoint),           \
         _voltageuv)
 
+#define clkvfpointvoltageuvget(pgpu, pvfpoint)                          \
+        CTRL_CLK_VF_PAIR_VOLTAGE_UV_GET(clkvfpointpairget(pvfpoint))    \
+
 struct clk_vf_point *construct_clk_vf_point(struct gk20a *g, void *pargs);
 
 #endif