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gpu: nvgpu: Add DT support for TPC_PG_POWERGATE

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Added support for TPC_PG_POWERGATE during probe for nvgpu via DT.
A new DT binding GV11B_FUSE_OPT_TPC_DISABLE is supported by nvgpu
driver that checks for valid masks and updates the global tpc_pg_mask
flag.

Bug 200518434

Change-Id: Ia65ae518b48e36d28de5e9375bc994232f6a9438
Signed-off-by: Debarshi Dutta <ddutta@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/2117783
Reviewed-by: svc-mobile-coverity <svc-mobile-coverity@nvidia.com>
Reviewed-by: Deepak Goyal <dgoyal@nvidia.com>
Reviewed-by: Bibek Basu <bbasu@nvidia.com>
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
This commit is contained in:
Debarshi Dutta
2019-05-13 16:47:04 +05:30
committed by mobile promotions
parent 543a904e63
commit 1f867543da
3 changed files with 33 additions and 0 deletions
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6
drivers/gpu/nvgpu/os/linux/module.c
View File

@@ -32,6 +32,7 @@
#include <uapi/linux/nvgpu.h>
#include <dt-bindings/soc/gm20b-fuse.h>
#include <dt-bindings/soc/gp10b-fuse.h>
#include <dt-bindings/soc/gv11b-fuse.h>
#include <soc/tegra/fuse.h>
@@ -1165,6 +1166,7 @@ static inline void set_gk20a(struct platform_device *pdev, struct gk20a *gk20a)
static int nvgpu_read_fuse_overrides(struct gk20a *g)
{
struct device_node *np = nvgpu_get_node(g);
struct gk20a_platform *platform = dev_get_drvdata(dev_from_gk20a(g));
u32 *fuses;
int count, i;
@@ -1191,6 +1193,10 @@ static int nvgpu_read_fuse_overrides(struct gk20a *g)
case GP10B_FUSE_OPT_ECC_EN:
g->gr.fecs_feature_override_ecc_val = value;
break;
case GV11B_FUSE_OPT_TPC_DISABLE:
if (platform->set_tpc_pg_mask != NULL)
platform->set_tpc_pg_mask(dev_from_gk20a(g), value);
break;
default:
nvgpu_err(g, "ignore unknown fuse override %08x", fuse);
break;

3
drivers/gpu/nvgpu/os/linux/platform_gk20a.h
View File

@@ -196,6 +196,9 @@ struct gk20a_platform {
/* Pre callback is called before frequency change */
void (*prescale)(struct device *dev);
/* Set TPC_PG during probe */
void (*set_tpc_pg_mask)(struct device *dev, u32 tpc_mask);
/* Devfreq governor name. If scaling is enabled, we request
* this governor to be used in scaling */
const char *devfreq_governor;

24
drivers/gpu/nvgpu/os/linux/platform_gv11b_tegra.c
View File

@@ -218,6 +218,28 @@ static int gv11b_tegra_suspend(struct device *dev)
return 0;
}
static bool is_tpc_mask_valid(struct gk20a_platform *platform, u32 tpc_mask)
{
u32 i;
bool valid = false;
for (i = 0; i < MAX_TPC_PG_CONFIGS; i++) {
if (tpc_mask == platform->valid_tpc_mask[i])
valid = true;
}
return valid;
}
static void gv11b_tegra_set_tpc_pg_mask(struct device *dev, u32 tpc_mask)
{
struct gk20a_platform *platform = gk20a_get_platform(dev);
struct gk20a *g = get_gk20a(dev);
if (is_tpc_mask_valid(platform, tpc_mask)) {
g->tpc_pg_mask = tpc_mask;
}
}
struct gk20a_platform gv11b_tegra_platform = {
.has_syncpoints = true,
@@ -237,6 +259,8 @@ struct gk20a_platform gv11b_tegra_platform = {
.valid_tpc_mask[1] = 0x1,
.valid_tpc_mask[2] = 0x5,
.set_tpc_pg_mask = gv11b_tegra_set_tpc_pg_mask,
.can_slcg = true,
.can_blcg = true,
.can_elcg = true,