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Subject[PATCH 2/3] drm/nouveau/clk: support for non-BIOS pstates
Date
Make nouveau_clock_create() take new two optional arguments: an array
of pstates and its size. When these are specified,
nouveau_clock_create() will use the provided pstates instead of
probing them using the BIOS.

This is useful for platforms which do not provide a BIOS, like Tegra.

Signed-off-by: Alexandre Courbot <acourbot@nvidia.com>
---
drivers/gpu/drm/nouveau/core/include/subdev/clock.h | 8 +++++---
drivers/gpu/drm/nouveau/core/subdev/clock/base.c | 16 ++++++++++++----
drivers/gpu/drm/nouveau/core/subdev/clock/nv04.c | 4 ++--
drivers/gpu/drm/nouveau/core/subdev/clock/nv40.c | 4 ++--
drivers/gpu/drm/nouveau/core/subdev/clock/nv50.c | 2 +-
drivers/gpu/drm/nouveau/core/subdev/clock/nva3.c | 4 ++--
drivers/gpu/drm/nouveau/core/subdev/clock/nvaa.c | 4 ++--
drivers/gpu/drm/nouveau/core/subdev/clock/nvc0.c | 4 ++--
drivers/gpu/drm/nouveau/core/subdev/clock/nve0.c | 4 ++--
9 files changed, 30 insertions(+), 20 deletions(-)

diff --git a/drivers/gpu/drm/nouveau/core/include/subdev/clock.h b/drivers/gpu/drm/nouveau/core/include/subdev/clock.h
index c01e29c9f89a..c0fe191c9787 100644
--- a/drivers/gpu/drm/nouveau/core/include/subdev/clock.h
+++ b/drivers/gpu/drm/nouveau/core/include/subdev/clock.h
@@ -108,8 +108,9 @@ struct nouveau_clocks {
int mdiv;
};

-#define nouveau_clock_create(p,e,o,i,r,d) \
- nouveau_clock_create_((p), (e), (o), (i), (r), sizeof(**d), (void **)d)
+#define nouveau_clock_create(p,e,o,i,r,s,n,d) \
+ nouveau_clock_create_((p), (e), (o), (i), (r), (s), (n), sizeof(**d), \
+ (void **)d)
#define nouveau_clock_destroy(p) ({ \
struct nouveau_clock *clk = (p); \
_nouveau_clock_dtor(nv_object(clk)); \
@@ -123,7 +124,8 @@ struct nouveau_clocks {

int nouveau_clock_create_(struct nouveau_object *, struct nouveau_object *,
struct nouveau_oclass *,
- struct nouveau_clocks *, bool, int, void **);
+ struct nouveau_clocks *, struct nouveau_pstate *,
+ int, bool, int, void **);
void _nouveau_clock_dtor(struct nouveau_object *);
int _nouveau_clock_init(struct nouveau_object *);
#define _nouveau_clock_fini _nouveau_subdev_fini
diff --git a/drivers/gpu/drm/nouveau/core/subdev/clock/base.c b/drivers/gpu/drm/nouveau/core/subdev/clock/base.c
index 63b314a033cb..e5798e74d616 100644
--- a/drivers/gpu/drm/nouveau/core/subdev/clock/base.c
+++ b/drivers/gpu/drm/nouveau/core/subdev/clock/base.c
@@ -464,6 +464,7 @@ nouveau_clock_create_(struct nouveau_object *parent,
struct nouveau_object *engine,
struct nouveau_oclass *oclass,
struct nouveau_clocks *clocks,
+ struct nouveau_pstate *pstates, int nb_pstates,
bool allow_reclock,
int length, void **object)
{
@@ -482,10 +483,17 @@ nouveau_clock_create_(struct nouveau_object *parent,
clk->domains = clocks;
clk->ustate = -1;

- idx = 0;
- do {
- ret = nouveau_pstate_new(clk, idx++);
- } while (ret == 0);
+ /* If no pstates are provided, try and fetch them from the BIOS */
+ if (!pstates) {
+ idx = 0;
+ do {
+ ret = nouveau_pstate_new(clk, idx++);
+ } while (ret == 0);
+ } else {
+ for (idx = 0; idx < nb_pstates; idx++)
+ list_add_tail(&pstates[idx].head, &clk->states);
+ clk->state_nr = nb_pstates;
+ }

clk->allow_reclock = allow_reclock;

diff --git a/drivers/gpu/drm/nouveau/core/subdev/clock/nv04.c b/drivers/gpu/drm/nouveau/core/subdev/clock/nv04.c
index eb2d4425a49e..4c48232686be 100644
--- a/drivers/gpu/drm/nouveau/core/subdev/clock/nv04.c
+++ b/drivers/gpu/drm/nouveau/core/subdev/clock/nv04.c
@@ -82,8 +82,8 @@ nv04_clock_ctor(struct nouveau_object *parent, struct nouveau_object *engine,
struct nv04_clock_priv *priv;
int ret;

- ret = nouveau_clock_create(parent, engine, oclass, nv04_domain, false,
- &priv);
+ ret = nouveau_clock_create(parent, engine, oclass, nv04_domain, NULL, 0,
+ false, &priv);
*pobject = nv_object(priv);
if (ret)
return ret;
diff --git a/drivers/gpu/drm/nouveau/core/subdev/clock/nv40.c b/drivers/gpu/drm/nouveau/core/subdev/clock/nv40.c
index 8a9e16839791..08368fe97029 100644
--- a/drivers/gpu/drm/nouveau/core/subdev/clock/nv40.c
+++ b/drivers/gpu/drm/nouveau/core/subdev/clock/nv40.c
@@ -213,8 +213,8 @@ nv40_clock_ctor(struct nouveau_object *parent, struct nouveau_object *engine,
struct nv40_clock_priv *priv;
int ret;

- ret = nouveau_clock_create(parent, engine, oclass, nv40_domain, true,
- &priv);
+ ret = nouveau_clock_create(parent, engine, oclass, nv40_domain, NULL, 0,
+ true, &priv);
*pobject = nv_object(priv);
if (ret)
return ret;
diff --git a/drivers/gpu/drm/nouveau/core/subdev/clock/nv50.c b/drivers/gpu/drm/nouveau/core/subdev/clock/nv50.c
index 8c132772ba9e..5070ebc260f8 100644
--- a/drivers/gpu/drm/nouveau/core/subdev/clock/nv50.c
+++ b/drivers/gpu/drm/nouveau/core/subdev/clock/nv50.c
@@ -507,7 +507,7 @@ nv50_clock_ctor(struct nouveau_object *parent, struct nouveau_object *engine,
int ret;

ret = nouveau_clock_create(parent, engine, oclass, pclass->domains,
- false, &priv);
+ NULL, 0, false, &priv);
*pobject = nv_object(priv);
if (ret)
return ret;
diff --git a/drivers/gpu/drm/nouveau/core/subdev/clock/nva3.c b/drivers/gpu/drm/nouveau/core/subdev/clock/nva3.c
index 9fb58354a80b..087012b18956 100644
--- a/drivers/gpu/drm/nouveau/core/subdev/clock/nva3.c
+++ b/drivers/gpu/drm/nouveau/core/subdev/clock/nva3.c
@@ -302,8 +302,8 @@ nva3_clock_ctor(struct nouveau_object *parent, struct nouveau_object *engine,
struct nva3_clock_priv *priv;
int ret;

- ret = nouveau_clock_create(parent, engine, oclass, nva3_domain, false,
- &priv);
+ ret = nouveau_clock_create(parent, engine, oclass, nva3_domain, NULL, 0,
+ false, &priv);
*pobject = nv_object(priv);
if (ret)
return ret;
diff --git a/drivers/gpu/drm/nouveau/core/subdev/clock/nvaa.c b/drivers/gpu/drm/nouveau/core/subdev/clock/nvaa.c
index 6a65fc9e9663..74e19731b1b7 100644
--- a/drivers/gpu/drm/nouveau/core/subdev/clock/nvaa.c
+++ b/drivers/gpu/drm/nouveau/core/subdev/clock/nvaa.c
@@ -421,8 +421,8 @@ nvaa_clock_ctor(struct nouveau_object *parent, struct nouveau_object *engine,
struct nvaa_clock_priv *priv;
int ret;

- ret = nouveau_clock_create(parent, engine, oclass, nvaa_domains, true,
- &priv);
+ ret = nouveau_clock_create(parent, engine, oclass, nvaa_domains, NULL,
+ 0, true, &priv);
*pobject = nv_object(priv);
if (ret)
return ret;
diff --git a/drivers/gpu/drm/nouveau/core/subdev/clock/nvc0.c b/drivers/gpu/drm/nouveau/core/subdev/clock/nvc0.c
index dbf8517f54da..1234abaab2db 100644
--- a/drivers/gpu/drm/nouveau/core/subdev/clock/nvc0.c
+++ b/drivers/gpu/drm/nouveau/core/subdev/clock/nvc0.c
@@ -437,8 +437,8 @@ nvc0_clock_ctor(struct nouveau_object *parent, struct nouveau_object *engine,
struct nvc0_clock_priv *priv;
int ret;

- ret = nouveau_clock_create(parent, engine, oclass, nvc0_domain, false,
- &priv);
+ ret = nouveau_clock_create(parent, engine, oclass, nvc0_domain, NULL, 0,
+ false, &priv);
*pobject = nv_object(priv);
if (ret)
return ret;
diff --git a/drivers/gpu/drm/nouveau/core/subdev/clock/nve0.c b/drivers/gpu/drm/nouveau/core/subdev/clock/nve0.c
index 0e62a3240144..7eccad57512e 100644
--- a/drivers/gpu/drm/nouveau/core/subdev/clock/nve0.c
+++ b/drivers/gpu/drm/nouveau/core/subdev/clock/nve0.c
@@ -475,8 +475,8 @@ nve0_clock_ctor(struct nouveau_object *parent, struct nouveau_object *engine,
struct nve0_clock_priv *priv;
int ret;

- ret = nouveau_clock_create(parent, engine, oclass, nve0_domain, true,
- &priv);
+ ret = nouveau_clock_create(parent, engine, oclass, nve0_domain, NULL, 0,
+ true, &priv);
*pobject = nv_object(priv);
if (ret)
return ret;
--
2.0.0


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