this function will be used to update the current clock state.
This will happen for various reasons:
* temperature changes (may change cstate and/or voltage)
* user changes boost mode
* load changes
v2: add wait parameter
Signed-off-by: Karol Herbst <nouv...@karolherbst.de>
---
drm/nouveau/include/nvkm/subdev/clk.h | 1 +
drm/nouveau/nvkm/subdev/clk/base.c | 46 ++++++++++++++++++++---------------
2 files changed, 28 insertions(+), 19 deletions(-)
diff --git a/drm/nouveau/include/nvkm/subdev/clk.h
b/drm/nouveau/include/nvkm/subdev/clk.h
index 61d99fd..77d94c1 100644
--- a/drm/nouveau/include/nvkm/subdev/clk.h
+++ b/drm/nouveau/include/nvkm/subdev/clk.h
@@ -120,6 +120,7 @@ int nvkm_clk_ustate(struct nvkm_clk *, int req, int pwr);
int nvkm_clk_astate(struct nvkm_clk *, int req, int rel, bool wait);
int nvkm_clk_dstate(struct nvkm_clk *, int req, int rel);
int nvkm_clk_tstate(struct nvkm_clk *, int req, int rel);
+int nvkm_clk_update(struct nvkm_clk *, bool wait);
int nv04_clk_new(struct nvkm_device *, int, struct nvkm_clk **);
int nv40_clk_new(struct nvkm_device *, int, struct nvkm_clk **);
diff --git a/drm/nouveau/nvkm/subdev/clk/base.c
b/drm/nouveau/nvkm/subdev/clk/base.c
index 1ca25dd..bfc6a49 100644
--- a/drm/nouveau/nvkm/subdev/clk/base.c
+++ b/drm/nouveau/nvkm/subdev/clk/base.c
@@ -274,11 +274,14 @@ static int
nvkm_pstate_prog(struct nvkm_clk *clk, int pstatei)
{
struct nvkm_subdev *subdev = &clk->subdev;
- struct nvkm_ram *ram = subdev->device->fb->ram;
+ struct nvkm_fb *fb = subdev->device->fb;
struct nvkm_pci *pci = subdev->device->pci;
struct nvkm_pstate *pstate;
int ret, idx = 0;
+ if (pstatei == -1)
+ return 0;
+
list_for_each_entry(pstate, &clk->states, head) {
if (idx++ == pstatei)
break;
@@ -289,7 +292,8 @@ nvkm_pstate_prog(struct nvkm_clk *clk, int pstatei)
nvkm_pcie_set_link(pci, pstate->pcie_speed, pstate->pcie_width);
- if (ram && ram->func->calc) {
+ if (fb && fb->ram && fb->ram->func->calc) {
+ struct nvkm_ram *ram = fb->ram;
int khz = pstate->base.domain[nv_clk_src_mem];
do {
ret = ram->func->calc(ram, khz);
@@ -303,11 +307,11 @@ nvkm_pstate_prog(struct nvkm_clk *clk, int pstatei)
}
static void
-nvkm_pstate_work(struct work_struct *work)
+nvkm_clk_update_work(struct work_struct *work)
{
struct nvkm_clk *clk = container_of(work, typeof(*clk), work);
struct nvkm_subdev *subdev = &clk->subdev;
- int pstate;
+ int pstate, ret;
if (!atomic_xchg(&clk->waiting, 0))
return;
@@ -327,21 +331,25 @@ nvkm_pstate_work(struct work_struct *work)
}
nvkm_trace(subdev, "-> %d\n", pstate);
- if (pstate != clk->pstate) {
- int ret = nvkm_pstate_prog(clk, pstate);
- if (ret) {
- nvkm_error(subdev, "error setting pstate %d: %d\n",
- pstate, ret);
- }
+ ret = nvkm_pstate_prog(clk, pstate);
+ if (ret) {
+ nvkm_error(subdev, "error setting pstate %d: %d\n",
+ pstate, ret);
}
wake_up_all(&clk->wait);
nvkm_notify_get(&clk->pwrsrc_ntfy);
}
-static int
-nvkm_pstate_calc(struct nvkm_clk *clk, bool wait)
+int
+nvkm_clk_update(struct nvkm_clk *clk, bool wait)
{
+ if (!clk)
+ return -EINVAL;
+
+ if (!clk->allow_reclock)
+ return -ENODEV;
+
atomic_set(&clk->waiting, 1);
schedule_work(&clk->work);
if (wait)
@@ -531,7 +539,7 @@ nvkm_clk_ustate(struct nvkm_clk *clk, int req, int pwr)
if (ret >= 0) {
if (ret -= 2, pwr) clk->ustate_ac = ret;
else clk->ustate_dc = ret;
- return nvkm_pstate_calc(clk, true);
+ return nvkm_clk_update(clk, true);
}
return ret;
}
@@ -543,7 +551,7 @@ nvkm_clk_astate(struct nvkm_clk *clk, int req, int rel,
bool wait)
if ( rel) clk->astate += rel;
clk->astate = min(clk->astate, clk->state_nr - 1);
clk->astate = max(clk->astate, 0);
- return nvkm_pstate_calc(clk, wait);
+ return nvkm_clk_update(clk, wait);
}
int
@@ -553,7 +561,7 @@ nvkm_clk_tstate(struct nvkm_clk *clk, int req, int rel)
if ( rel) clk->tstate += rel;
clk->tstate = min(clk->tstate, 0);
clk->tstate = max(clk->tstate, -(clk->state_nr - 1));
- return nvkm_pstate_calc(clk, true);
+ return nvkm_clk_update(clk, true);
}
int
@@ -563,7 +571,7 @@ nvkm_clk_dstate(struct nvkm_clk *clk, int req, int rel)
if ( rel) clk->dstate += rel;
clk->dstate = min(clk->dstate, clk->state_nr - 1);
clk->dstate = max(clk->dstate, 0);
- return nvkm_pstate_calc(clk, true);
+ return nvkm_clk_update(clk, true);
}
static int
@@ -571,7 +579,7 @@ nvkm_clk_pwrsrc(struct nvkm_notify *notify)
{
struct nvkm_clk *clk =
container_of(notify, typeof(*clk), pwrsrc_ntfy);
- nvkm_pstate_calc(clk, false);
+ nvkm_clk_update(clk, false);
return NVKM_NOTIFY_DROP;
}
@@ -626,7 +634,7 @@ nvkm_clk_init(struct nvkm_subdev *subdev)
clk->tstate = 0;
clk->dstate = 0;
clk->pstate = -1;
- nvkm_pstate_calc(clk, true);
+ nvkm_clk_update(clk, true);
return 0;
}
@@ -685,7 +693,7 @@ nvkm_clk_ctor(const struct nvkm_clk_func *func, struct
nvkm_device *device,
clk->ustate_dc = -1;
clk->allow_reclock = allow_reclock;
- INIT_WORK(&clk->work, nvkm_pstate_work);
+ INIT_WORK(&clk->work, nvkm_clk_update_work);
init_waitqueue_head(&clk->wait);
atomic_set(&clk->waiting, 0);
--
2.8.1
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