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drm/nouveau: expose pstate selection per-power source in sysfs

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echo ac:id >> pstate # select mode when on mains power
echo dc:id >> pstate # select mode when on battery
echo id >> pstate # select mode for both

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
This commit is contained in:
Ben Skeggs 2014-06-13 14:17:09 +10:00
parent 7e1ee6333c
commit 7238eca4cf
3 changed files with 52 additions and 18 deletions
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25
drivers/gpu/drm/nouveau/core/engine/device/ctrl.c
View File

@ -40,15 +40,16 @@ nouveau_control_mthd_pstate_info(struct nouveau_object *object, u32 mthd,
return -EINVAL;
if (clk) {
args->count = clk->state_nr;
if (clk->pwrsrc)
args->ustate = clk->ustate_ac;
else
args->ustate = clk->ustate_dc;
args->count = clk->state_nr;
args->ustate_ac = clk->ustate_ac;
args->ustate_dc = clk->ustate_dc;
args->pwrsrc = clk->pwrsrc;
args->pstate = clk->pstate;
} else {
args->count = 0;
args->ustate = NV_CONTROL_PSTATE_INFO_USTATE_DISABLE;
args->count = 0;
args->ustate_ac = NV_CONTROL_PSTATE_INFO_USTATE_DISABLE;
args->ustate_dc = NV_CONTROL_PSTATE_INFO_USTATE_DISABLE;
args->pwrsrc = -ENOSYS;
args->pstate = NV_CONTROL_PSTATE_INFO_PSTATE_UNKNOWN;
}
@ -122,11 +123,19 @@ nouveau_control_mthd_pstate_user(struct nouveau_object *object, u32 mthd,
{
struct nouveau_clock *clk = nouveau_clock(object);
struct nv_control_pstate_user *args = data;
int ret = 0;
if (size < sizeof(*args) || !clk)
return -EINVAL;
return nouveau_clock_ustate(clk, args->state, clk->pwrsrc);
if (args->pwrsrc >= 0) {
ret |= nouveau_clock_ustate(clk, args->ustate, args->pwrsrc);
} else {
ret |= nouveau_clock_ustate(clk, args->ustate, 0);
ret |= nouveau_clock_ustate(clk, args->ustate, 1);
}
return ret;
}
struct nouveau_oclass

7
drivers/gpu/drm/nouveau/core/include/core/class.h
View File

@ -148,7 +148,9 @@ struct nv_perfctr_read {
struct nv_control_pstate_info {
u32 count; /* out: number of power states */
s32 ustate; /* out: current target pstate index */
s32 ustate_ac; /* out: target pstate index */
s32 ustate_dc; /* out: target pstate index */
s32 pwrsrc; /* out: current power source */
u32 pstate; /* out: current pstate index */
};
@ -166,7 +168,8 @@ struct nv_control_pstate_attr {
};
struct nv_control_pstate_user {
s32 state; /* in: pstate identifier */
s32 ustate; /* in: pstate identifier */
s32 pwrsrc; /* in: target power source */
};
/* DMA FIFO channel classes

38
drivers/gpu/drm/nouveau/nouveau_sysfs.c
View File

@ -68,7 +68,9 @@ nouveau_sysfs_pstate_get(struct device *d, struct device_attribute *a, char *b)
if (i < info.count)
snappendf(buf, cnt, "%02x:", attr.state);
else
snappendf(buf, cnt, "--:");
snappendf(buf, cnt, "%s:", info.pwrsrc == 0 ? "DC" :
info.pwrsrc == 1 ? "AC" :
"--");
attr.index = 0;
do {
@ -84,9 +86,20 @@ nouveau_sysfs_pstate_get(struct device *d, struct device_attribute *a, char *b)
snappendf(buf, cnt, " %s", attr.unit);
} while (attr.index);
if ((state >= 0 && info.pstate == state) ||
(state < 0 && info.ustate < 0))
snappendf(buf, cnt, " *");
if (state >= 0) {
if (info.ustate_ac == state)
snappendf(buf, cnt, " AC");
if (info.ustate_dc == state)
snappendf(buf, cnt, " DC");
if (info.pstate == state)
snappendf(buf, cnt, " *");
} else {
if (info.ustate_ac < -1)
snappendf(buf, cnt, " AC");
if (info.ustate_dc < -1)
snappendf(buf, cnt, " DC");
}
snappendf(buf, cnt, "\n");
}
@ -98,23 +111,32 @@ nouveau_sysfs_pstate_set(struct device *d, struct device_attribute *a,
const char *buf, size_t count)
{
struct nouveau_sysfs *sysfs = nouveau_sysfs(drm_device(d));
struct nv_control_pstate_user args;
struct nv_control_pstate_user args = { .pwrsrc = -EINVAL };
long value, ret;
char *tmp;
if ((tmp = strchr(buf, '\n')))
*tmp = '\0';
if (!strncasecmp(buf, "dc:", 3)) {
args.pwrsrc = 0;
buf += 3;
} else
if (!strncasecmp(buf, "ac:", 3)) {
args.pwrsrc = 1;
buf += 3;
}
if (!strcasecmp(buf, "none"))
args.state = NV_CONTROL_PSTATE_USER_STATE_UNKNOWN;
args.ustate = NV_CONTROL_PSTATE_USER_STATE_UNKNOWN;
else
if (!strcasecmp(buf, "auto"))
args.state = NV_CONTROL_PSTATE_USER_STATE_PERFMON;
args.ustate = NV_CONTROL_PSTATE_USER_STATE_PERFMON;
else {
ret = kstrtol(buf, 16, &value);
if (ret)
return ret;
args.state = value;
args.ustate = value;
}
ret = nv_exec(sysfs->ctrl, NV_CONTROL_PSTATE_USER, &args, sizeof(args));