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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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83
drivers/gpu/nvgpu/clk/clk_domain.c
View File

@@ -435,6 +435,19 @@ static u32 clkdomainvfsearch_stub(
return -EINVAL;
}
static u32 clkdomaingetfpoints_stub(
struct gk20a *g,
struct clk_pmupstate *pclk,
struct clk_domain *pdomain,
u32 *pfpointscount,
u16 *pfreqpointsinmhz,
u8 rail
)
{
gk20a_dbg_info("");
return -EINVAL;
}
static u32 clk_domain_construct_super(struct gk20a *g,
struct boardobj **ppboardobj,
@@ -461,6 +474,9 @@ static u32 clk_domain_construct_super(struct gk20a *g,
pdomain->clkdomainclkvfsearch =
clkdomainvfsearch_stub;
pdomain->clkdomainclkgetfpoints =
clkdomaingetfpoints_stub;
pdomain->api_domain = ptmpdomain->api_domain;
pdomain->domain = ptmpdomain->domain;
pdomain->perf_domain_grp_idx =
@@ -626,6 +642,70 @@ done:
return status;
}
static u32 clkdomaingetfpoints
(
struct gk20a *g,
struct clk_pmupstate *pclk,
struct clk_domain *pdomain,
u32 *pfpointscount,
u16 *pfreqpointsinmhz,
u8 rail
)
{
u32 status = 0;
struct clk_domain_3x_master *p3xmaster =
(struct clk_domain_3x_master *)pdomain;
struct clk_prog *pprog = NULL;
struct clk_prog_1x_master *pprog1xmaster = NULL;
u32 fpointscount = 0;
u32 remainingcount;
u32 totalcount;
u16 *freqpointsdata;
u8 i;
gk20a_dbg_info("");
if (pfpointscount == NULL)
return -EINVAL;
if ((pfreqpointsinmhz == NULL) && (*pfpointscount != 0))
return -EINVAL;
if (pdomain->super.implements(g, &pdomain->super,
CTRL_CLK_CLK_DOMAIN_TYPE_3X_SLAVE))
return -EINVAL;
freqpointsdata = pfreqpointsinmhz;
totalcount = 0;
fpointscount = *pfpointscount;
remainingcount = fpointscount;
/* Iterate over the set of CLK_PROGs pointed at by this domain.*/
for (i = p3xmaster->super.clk_prog_idx_first;
i <= p3xmaster->super.clk_prog_idx_last;
i++) {
pprog = CLK_CLK_PROG_GET(pclk, i);
pprog1xmaster = (struct clk_prog_1x_master *)pprog;
status = pprog1xmaster->getfpoints(g, pclk, pprog1xmaster,
&fpointscount, &freqpointsdata, rail);
if (status) {
*pfpointscount = 0;
goto done;
}
totalcount += fpointscount;
if (*pfpointscount) {
remainingcount -= fpointscount;
fpointscount = remainingcount;
} else
fpointscount = 0;
}
*pfpointscount = totalcount;
done:
gk20a_dbg_info("done status %x", status);
return status;
}
static u32 _clk_domain_pmudatainit_3x_prog(struct gk20a *g,
struct boardobj *board_obj_ptr,
struct nv_pmu_boardobj *ppmudata)
@@ -689,6 +769,9 @@ static u32 clk_domain_construct_3x_prog(struct gk20a *g,
pdomain->super.super.clkdomainclkvfsearch =
clkdomainvfsearch;
pdomain->super.super.clkdomainclkgetfpoints =
clkdomaingetfpoints;
pdomain->clk_prog_idx_first = ptmpdomain->clk_prog_idx_first;
pdomain->clk_prog_idx_last = ptmpdomain->clk_prog_idx_last;
pdomain->noise_unaware_ordering_index =