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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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6
drivers/gpu/nvgpu/clk/clk_domain.h
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@@ -33,6 +33,11 @@ typedef u32 clkproglink(struct gk20a *g, struct clk_pmupstate *pclk,
typedef u32 clkvfsearch(struct gk20a *g, struct clk_pmupstate *pclk,
struct clk_domain *pdomain, u16 *clkmhz,
u32 *voltuv, u8 rail);
typedef u32 clkgetfpoints(struct gk20a *g, struct clk_pmupstate *pclk,
struct clk_domain *pdomain, u32 *pfpointscount,
u16 *pfreqpointsinmhz, u8 rail);
struct clk_domains {
struct boardobjgrp_e32 super;
u8 n_num_entries;
@@ -61,6 +66,7 @@ struct clk_domain {
u8 usage;
clkproglink *clkdomainclkproglink;
clkvfsearch *clkdomainclkvfsearch;
clkgetfpoints *clkdomainclkgetfpoints;
};
struct clk_domain_3x {