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gpu: nvgpu: add function to retrieve clk points

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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>
This commit is contained in:
Vijayakumar
2016-09-12 22:36:33 +05:30
committed by Deepak Nibade
parent 1b10905120
commit 3c351f5bb2
6 changed files with 194 additions and 0 deletions
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7
drivers/gpu/nvgpu/clk/clk_prog.h
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@@ -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 {