Now the cstatei parameter can be used of the nvkm_cstate_prog function to
select a specific cstate.
v5: Make a constant for the magic value.
Use list_last_entry.
Add nvkm_cstate_get here instead of in the next commit.
Signed-off-by: Karol Herbst <[email protected]>
---
drm/nouveau/include/nvkm/subdev/clk.h | 4 ++++
drm/nouveau/nvkm/subdev/clk/base.c | 19 +++++++++++++++++--
2 files changed, 21 insertions(+), 2 deletions(-)
diff --git a/drm/nouveau/include/nvkm/subdev/clk.h
b/drm/nouveau/include/nvkm/subdev/clk.h
index 0cf3d86..cc2a976 100644
--- a/drm/nouveau/include/nvkm/subdev/clk.h
+++ b/drm/nouveau/include/nvkm/subdev/clk.h
@@ -6,6 +6,10 @@
struct nvbios_pll;
struct nvkm_pll_vals;
+#define NVKM_CLK_CSTATE_DEFAULT -1 /* POSTed default */
+#define NVKM_CLK_CSTATE_BASE -2 /* pstate base */
+#define NVKM_CLK_CSTATE_HIGHEST -3 /* highest possible */
+
enum nv_clk_src {
nv_clk_src_crystal,
nv_clk_src_href,
diff --git a/drm/nouveau/nvkm/subdev/clk/base.c
b/drm/nouveau/nvkm/subdev/clk/base.c
index 98168be..688c908 100644
--- a/drm/nouveau/nvkm/subdev/clk/base.c
+++ b/drm/nouveau/nvkm/subdev/clk/base.c
@@ -74,6 +74,21 @@ nvkm_clk_adjust(struct nvkm_clk *clk, bool adjust,
/******************************************************************************
* C-States
*****************************************************************************/
+static struct nvkm_cstate *
+nvkm_cstate_get(struct nvkm_clk *clk, struct nvkm_pstate *pstate, int cstatei)
+{
+ struct nvkm_cstate *cstate;
+ if (cstatei == NVKM_CLK_CSTATE_HIGHEST)
+ return list_last_entry(&pstate->list, typeof(*cstate), head);
+ else {
+ list_for_each_entry(cstate, &pstate->list, head) {
+ if (cstate->id == cstatei)
+ return cstate;
+ }
+ }
+ return NULL;
+}
+
static int
nvkm_cstate_prog(struct nvkm_clk *clk, struct nvkm_pstate *pstate, int cstatei)
{
@@ -85,7 +100,7 @@ nvkm_cstate_prog(struct nvkm_clk *clk, struct nvkm_pstate
*pstate, int cstatei)
int ret;
if (!list_empty(&pstate->list)) {
- cstate = list_entry(pstate->list.prev, typeof(*cstate), head);
+ cstate = nvkm_cstate_get(clk, pstate, cstatei);
} else {
cstate = &pstate->base;
}
@@ -208,7 +223,7 @@ nvkm_pstate_prog(struct nvkm_clk *clk, int pstatei)
ram->func->tidy(ram);
}
- return nvkm_cstate_prog(clk, pstate, 0);
+ return nvkm_cstate_prog(clk, pstate, NVKM_CLK_CSTATE_HIGHEST);
}
static void
--
2.9.2
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