gpu: nvgpu: move gp106 specific clk_arbiter code into HAL

Currently, clock arbiter code is extensively using dgpu specific
implementation. This patch restructures the clk_arbiter code and moves
gp106 specific code into HAL. Following changes are made in this patch

1) clk_domain_get_f_points is now invoked via HAL for gp106 i.e.
g->ops.clk.clk_domain_get_f_points.

2) moved nvgpu_clk_arb_change_vf_point and other related static
functions to clk_arb_gp106.c.

3) Instead of only checking if get_arbiter_clk_domain is empty, a
check for support_clk_freq_controller is also added. This is to enable
the clk_arbiter based on support from both the OS and the chips.

Bug 2061372

Change-Id: I65b0a4e02145a86fbbfb420ed591b1fa3c86f6dc
Signed-off-by: Debarshi Dutta <ddutta@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1774279
Reviewed-by: svc-misra-checker <svc-misra-checker@nvidia.com>
GVS: Gerrit_Virtual_Submit
Reviewed-by: Deepak Nibade <dnibade@nvidia.com>
Reviewed-by: Vijayakumar Subbu <vsubbu@nvidia.com>
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>

1 files changed, 33 insertions, 0 deletions

diff --git a/drivers/gpu/nvgpu/gp106/clk_gp106.c b/drivers/gpu/nvgpu/gp106/clk_gp106.c
index 24b07112..dd7a2dd6 100644
--- a/drivers/gpu/nvgpu/gp106/clk_gp106.c
+++ b/drivers/gpu/nvgpu/gp106/clk_gp106.c
@@ -32,7 +32,9 @@
 #include <nvgpu/list.h>
 #include <nvgpu/clk_arb.h>
 #include <nvgpu/timers.h>
+#include <nvgpu/pmu.h>
 
+#include "clk/clk.h"
 #include "gk20a/gk20a.h"
 #include "gp106/mclk_gp106.h"
 
@@ -243,6 +245,37 @@ read_err:
 
 }
 
+int gp106_clk_domain_get_f_points(
+        struct gk20a *g,
+        u32 clkapidomain,
+        u32 *pfpointscount,
+        u16 *pfreqpointsinmhz)
+{
+        int status = -EINVAL;
+        struct clk_domain *pdomain;
+        u8 i;
+        struct clk_pmupstate *pclk = &g->clk_pmu;
+
+        if (pfpointscount == NULL)
+                return -EINVAL;
+
+        if ((pfreqpointsinmhz == NULL) && (*pfpointscount != 0))
+                return -EINVAL;
+
+        BOARDOBJGRP_FOR_EACH(&(pclk->clk_domainobjs.super.super),
+                        struct clk_domain *, pdomain, i) {
+                if (pdomain->api_domain == clkapidomain) {
+                        status = pdomain->clkdomainclkgetfpoints(g, pclk,
+                                pdomain, pfpointscount,
+                                pfreqpointsinmhz,
+                                CLK_PROG_VFE_ENTRY_LOGIC);
+                        return status;
+                }
+        }
+        return status;
+}
+
+
 #ifdef CONFIG_DEBUG_FS
 static int gp106_get_rate_show(void *data , u64 *val) {
         struct namemap_cfg *c = (struct namemap_cfg *) data;