clk subdev updates

index e5275f74..ce3bbcfe 100644
@@ -123,6 +123,7 @@ 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 *, u8 temperature);
+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 **);

index e4c8d310..ecff3ff3 100644
@@ -296,7 +296,7 @@ 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;

@@ -332,9 +332,15 @@ nvkm_pstate_work(struct work_struct *work)
 	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)

@@ -524,7 +530,7 @@ 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;
 }

@@ -536,7 +542,7 @@ 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

@@ -545,7 +551,7 @@ nvkm_clk_tstate(struct nvkm_clk *clk, u8 temp)
 	if (clk->temp == temp)
 		return 0;
 	clk->temp = temp;
-	return nvkm_pstate_calc(clk, false);
+	return nvkm_clk_update(clk, false);
 }
 
 int

@@ -555,7 +561,7 @@ 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

@@ -563,7 +569,7 @@ 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;
 }
 

@@ -618,7 +624,7 @@ nvkm_clk_init(struct nvkm_subdev *subdev)
 	clk->dstate = 0;
 	clk->pstate = -1;
 	clk->temp = 90; /* reasonable default value */
-	nvkm_pstate_calc(clk, true);
+	nvkm_clk_update(clk, true);
 	return 0;
 }
 

@@ -675,7 +681,7 @@ 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);
 

index ce3bbcfe..1340f5b8 100644
@@ -99,7 +99,6 @@ struct nvkm_clk {
 	int ustate_ac; /* user-requested (-1 disabled, -2 perfmon) */
 	int ustate_dc; /* user-requested (-1 disabled, -2 perfmon) */
 	int astate; /* perfmon adjustment (base) */
-	int dstate; /* display adjustment (min+) */
 	u8  temp;
 
 	bool allow_reclock;

@@ -121,7 +120,6 @@ struct nvkm_clk {
 int nvkm_clk_read(struct nvkm_clk *, enum nv_clk_src);
 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 *, u8 temperature);
 int nvkm_clk_update(struct nvkm_clk *, bool wait);
 

index ecff3ff3..07d530ed 100644
@@ -306,15 +306,14 @@ nvkm_clk_update_work(struct work_struct *work)
 		return;
 	clk->pwrsrc = power_supply_is_system_supplied();
 
-	nvkm_trace(subdev, "P %d PWR %d U(AC) %d U(DC) %d A %d T %d°C D %d\n",
+	nvkm_trace(subdev, "P %d PWR %d U(AC) %d U(DC) %d A %d T %d°C\n",
 		   clk->pstate, clk->pwrsrc, clk->ustate_ac, clk->ustate_dc,
-		   clk->astate, clk->temp, clk->dstate);
+		   clk->astate, clk->temp);
 
 	pstate = clk->pwrsrc ? clk->ustate_ac : clk->ustate_dc;
 	if (clk->state_nr && pstate != -1) {
 		pstate = (pstate < 0) ? clk->astate : pstate;
 		pstate = min(pstate, clk->state_nr - 1);
-		pstate = max(pstate, clk->dstate);
 	} else {
 		pstate = clk->pstate = -1;
 	}

@@ -554,16 +553,6 @@ nvkm_clk_tstate(struct nvkm_clk *clk, u8 temp)
 	return nvkm_clk_update(clk, false);
 }
 
-int
-nvkm_clk_dstate(struct nvkm_clk *clk, int req, int rel)
-{
-	if (!rel) clk->dstate  = req;
-	if ( rel) clk->dstate += rel;
-	clk->dstate = min(clk->dstate, clk->state_nr - 1);
-	clk->dstate = max(clk->dstate, 0);
-	return nvkm_clk_update(clk, true);
-}
-
 static int
 nvkm_clk_pwrsrc(struct nvkm_notify *notify)
 {

@@ -621,7 +610,6 @@ nvkm_clk_init(struct nvkm_subdev *subdev)
 		return clk->func->init(clk);
 
 	clk->astate = clk->state_nr - 1;
-	clk->dstate = 0;
 	clk->pstate = -1;
 	clk->temp = 90; /* reasonable default value */
 	nvkm_clk_update(clk, true);

index 1340f5b8..ec537e08 100644
@@ -10,6 +10,8 @@ struct nvkm_pll_vals;
 #define NVKM_CLK_CSTATE_BASE    -2 /* pstate base */
 #define NVKM_CLK_CSTATE_HIGHEST -3 /* highest possible */
 
+#define NVKM_CLK_PSTATE_DEFAULT -1
+
 enum nv_clk_src {
 	nv_clk_src_crystal,
 	nv_clk_src_href,

@@ -95,7 +97,7 @@ struct nvkm_clk {
 
 	struct nvkm_notify pwrsrc_ntfy;
 	int pwrsrc;
-	int pstate; /* current */
+	struct nvkm_pstate *pstate; /* current */
 	int ustate_ac; /* user-requested (-1 disabled, -2 perfmon) */
 	int ustate_dc; /* user-requested (-1 disabled, -2 perfmon) */
 	int astate; /* perfmon adjustment (base) */

index b0ece71a..da70626c 100644
@@ -52,7 +52,10 @@ nvkm_control_mthd_pstate_info(struct nvkm_control *ctrl, void *data, u32 size)
 		args->v0.ustate_ac = clk->ustate_ac;
 		args->v0.ustate_dc = clk->ustate_dc;
 		args->v0.pwrsrc = clk->pwrsrc;
-		args->v0.pstate = clk->pstate;
+		if (clk->pstate)
+			args->v0.pstate = clk->pstate->pstate;
+		else
+			args->v0.pstate = NVKM_CLK_PSTATE_DEFAULT;
 	} else {
 		args->v0.count = 0;
 		args->v0.ustate_ac = NVIF_CONTROL_PSTATE_INFO_V0_USTATE_DISABLE;

index 07d530ed..0d4d9fdf 100644
@@ -271,13 +271,16 @@ nvkm_pstate_prog(struct nvkm_clk *clk, int pstatei)
 	struct nvkm_pstate *pstate;
 	int ret, idx = 0;
 
+	if (pstatei == NVKM_CLK_PSTATE_DEFAULT)
+		return 0;
+
 	list_for_each_entry(pstate, &clk->states, head) {
 		if (idx++ == pstatei)
 			break;
 	}
 
 	nvkm_debug(subdev, "setting performance state %d\n", pstatei);
-	clk->pstate = pstatei;
+	clk->pstate = pstate;
 
 	nvkm_pcie_set_link(pci, pstate->pcie_speed, pstate->pcie_width);
 

@@ -306,8 +309,12 @@ nvkm_clk_update_work(struct work_struct *work)
 		return;
 	clk->pwrsrc = power_supply_is_system_supplied();
 
+	if (clk->pstate)
+		pstate = clk->pstate->pstate;
+	else
+		pstate = NVKM_CLK_PSTATE_DEFAULT;
 	nvkm_trace(subdev, "P %d PWR %d U(AC) %d U(DC) %d A %d T %d°C\n",
-		   clk->pstate, clk->pwrsrc, clk->ustate_ac, clk->ustate_dc,
+		   pstate, clk->pwrsrc, clk->ustate_ac, clk->ustate_dc,
 		   clk->astate, clk->temp);
 
 	pstate = clk->pwrsrc ? clk->ustate_ac : clk->ustate_dc;

@@ -315,11 +322,11 @@ nvkm_clk_update_work(struct work_struct *work)
 		pstate = (pstate < 0) ? clk->astate : pstate;
 		pstate = min(pstate, clk->state_nr - 1);
 	} else {
-		pstate = clk->pstate = -1;
+		pstate = NVKM_CLK_PSTATE_DEFAULT;
 	}
 
 	nvkm_trace(subdev, "-> %d\n", pstate);
-	if (pstate != clk->pstate) {
+	if (!clk->pstate || pstate != clk->pstate->pstate) {
 		int ret = nvkm_pstate_prog(clk, pstate);
 		if (ret) {
 			nvkm_error(subdev, "error setting pstate %d: %d\n",

@@ -610,7 +617,7 @@ nvkm_clk_init(struct nvkm_subdev *subdev)
 		return clk->func->init(clk);
 
 	clk->astate = clk->state_nr - 1;
-	clk->pstate = -1;
+	clk->pstate = NULL;
 	clk->temp = 90; /* reasonable default value */
 	nvkm_clk_update(clk, true);
 	return 0;

index 05e81855..de579726 100644
@@ -55,24 +55,22 @@ gk20a_pmu_dvfs_target(struct gk20a_pmu *pmu, int *state)
 	return nvkm_clk_astate(clk, *state, 0, false);
 }
 
-static void
-gk20a_pmu_dvfs_get_cur_state(struct gk20a_pmu *pmu, int *state)
-{
-	struct nvkm_clk *clk = pmu->base.subdev.device->clk;
-
-	*state = clk->pstate;
-}
-
 static int
 gk20a_pmu_dvfs_get_target_state(struct gk20a_pmu *pmu,
 				int *state, int load)
 {
 	struct gk20a_pmu_dvfs_data *data = pmu->data;
 	struct nvkm_clk *clk = pmu->base.subdev.device->clk;
+	struct nvkm_pstate *pstate = clk->pstate;
 	int cur_level, level;
 
+	if (!pstate) {
+		*state = 0;
+		return 1;
+	}
+
 	/* For GK20A, the performance level is directly mapped to pstate */
-	level = cur_level = clk->pstate;
+	level = cur_level = clk->pstate->pstate;
 
 	if (load > data->p_load_max) {
 		level = min(clk->state_nr - 1, level + (clk->state_nr / 3));

@@ -142,8 +140,6 @@ gk20a_pmu_dvfs_work(struct nvkm_alarm *alarm)
 	nvkm_trace(subdev, "utilization = %d %%, avg_load = %d %%\n",
 		   utilization, data->avg_load);
 
-	gk20a_pmu_dvfs_get_cur_state(pmu, &state);
-
 	if (gk20a_pmu_dvfs_get_target_state(pmu, &state, data->avg_load)) {
 		nvkm_trace(subdev, "set new state to %d\n", state);
 		gk20a_pmu_dvfs_target(pmu, &state);

index ec537e08..f35518c3 100644
@@ -101,6 +101,8 @@ struct nvkm_clk {
 	int ustate_ac; /* user-requested (-1 disabled, -2 perfmon) */
 	int ustate_dc; /* user-requested (-1 disabled, -2 perfmon) */
 	int astate; /* perfmon adjustment (base) */
+	struct nvkm_cstate *cstate;
+	int exp_cstateid;
 	u8  temp;
 
 	bool allow_reclock;

index 0d4d9fdf..d37c13b7 100644
@@ -146,9 +146,14 @@ 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)
+	switch (cstatei) {
+	case NVKM_CLK_CSTATE_HIGHEST:
 		return list_last_entry(&pstate->list, typeof(*cstate), head);
-	else {
+	case NVKM_CLK_CSTATE_BASE:
+		return &pstate->base;
+	case NVKM_CLK_CSTATE_DEFAULT:
+		return NULL;
+	default:
 		list_for_each_entry(cstate, &pstate->list, head) {
 			if (cstate->id == cstatei)
 				return cstate;

@@ -167,6 +172,9 @@ nvkm_cstate_prog(struct nvkm_clk *clk, struct nvkm_pstate *pstate, int cstatei)
 	struct nvkm_cstate *cstate;
 	int ret;
 
+	if (cstatei == NVKM_CLK_CSTATE_DEFAULT)
+		return 0;
+
 	if (!list_empty(&pstate->list)) {
 		cstate = nvkm_cstate_get(clk, pstate, cstatei);
 		cstate = nvkm_cstate_find_best(clk, pstate, cstate);

@@ -193,6 +201,7 @@ nvkm_cstate_prog(struct nvkm_clk *clk, struct nvkm_pstate *pstate, int cstatei)
 
 	ret = clk->func->calc(clk, cstate);
 	if (ret == 0) {
+		clk->cstate = cstate;
 		ret = clk->func->prog(clk);
 		clk->func->tidy(clk);
 	}

@@ -295,7 +304,7 @@ nvkm_pstate_prog(struct nvkm_clk *clk, int pstatei)
 		ram->func->tidy(ram);
 	}
 
-	return nvkm_cstate_prog(clk, pstate, NVKM_CLK_CSTATE_HIGHEST);
+	return nvkm_cstate_prog(clk, pstate, clk->exp_cstateid);
 }
 
 static void

@@ -313,9 +322,9 @@ nvkm_clk_update_work(struct work_struct *work)
 		pstate = clk->pstate->pstate;
 	else
 		pstate = NVKM_CLK_PSTATE_DEFAULT;
-	nvkm_trace(subdev, "P %d PWR %d U(AC) %d U(DC) %d A %d T %d°C\n",
+	nvkm_trace(subdev, "P %d PWR %d U(AC) %d U(DC) %d A %d C %d T %d°C\n",
 		   pstate, clk->pwrsrc, clk->ustate_ac, clk->ustate_dc,
-		   clk->astate, clk->temp);
+		   clk->astate, clk->exp_cstateid, clk->temp);
 
 	pstate = clk->pwrsrc ? clk->ustate_ac : clk->ustate_dc;
 	if (clk->state_nr && pstate != -1) {

@@ -536,6 +545,7 @@ 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;
+		clk->exp_cstateid = NVKM_CLK_CSTATE_HIGHEST;
 		return nvkm_clk_update(clk, true);
 	}
 	return ret;

@@ -548,6 +558,7 @@ 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);
+	clk->exp_cstateid = NVKM_CLK_CSTATE_BASE;
 	return nvkm_clk_update(clk, wait);
 }
 

@@ -618,6 +629,8 @@ nvkm_clk_init(struct nvkm_subdev *subdev)
 
 	clk->astate = clk->state_nr - 1;
 	clk->pstate = NULL;
+	clk->exp_cstateid = NVKM_CLK_CSTATE_DEFAULT;
+	clk->cstate = NULL;
 	clk->temp = 90; /* reasonable default value */
 	nvkm_clk_update(clk, true);
 	return 0;

@@ -701,15 +714,20 @@ nvkm_clk_ctor(const struct nvkm_clk_func *func, struct nvkm_device *device,
 	if (mode) {
 		clk->ustate_ac = nvkm_clk_nstate(clk, mode, arglen);
 		clk->ustate_dc = nvkm_clk_nstate(clk, mode, arglen);
+		clk->exp_cstateid = NVKM_CLK_CSTATE_HIGHEST;
 	}
 
 	mode = nvkm_stropt(device->cfgopt, "NvClkModeAC", &arglen);
-	if (mode)
+	if (mode) {
 		clk->ustate_ac = nvkm_clk_nstate(clk, mode, arglen);
+		clk->exp_cstateid = NVKM_CLK_CSTATE_HIGHEST;
+	}
 
 	mode = nvkm_stropt(device->cfgopt, "NvClkModeDC", &arglen);
-	if (mode)
+	if (mode) {
 		clk->ustate_dc = nvkm_clk_nstate(clk, mode, arglen);
+		clk->exp_cstateid = NVKM_CLK_CSTATE_HIGHEST;
+	}
 
 	clk->boost_mode = nvkm_longopt(device->cfgopt, "NvBoost",
 				       NVKM_CLK_BOOST_NONE);

index 963a4dba..27281c4e 100644
@@ -96,11 +96,11 @@ nouveau_debugfs_pstate_get(struct seq_file *m, void *data)
 		} while (attr.index);
 
 		if (state >= 0) {
-			if (info.ustate_ac == state)
+			if (info.ustate_ac == attr.state)
 				seq_printf(m, " AC");
-			if (info.ustate_dc == state)
+			if (info.ustate_dc == attr.state)
 				seq_printf(m, " DC");
-			if (info.pstate == state)
+			if (info.pstate == attr.state)
 				seq_printf(m, " *");
 		} else {
 			if (info.ustate_ac < -1)

135 lines not on this page · raw message

index 1d71bf09..54188d2b 100644
@@ -625,11 +625,10 @@ nvkm_clk_init(struct nvkm_subdev *subdev)
 	if (clk->func->init)
 		return clk->func->init(clk);
 
-	clk->astate = NVKM_CLK_PSTATE_DEFAULT;
+	/* after a resume we have no idea what clocks are set, reset the state
+	 */
 	clk->pstate = NULL;
-	clk->exp_cstateid = NVKM_CLK_CSTATE_DEFAULT;
 	clk->cstate = NULL;
-	clk->temp = 90; /* reasonable default value */
 	nvkm_clk_update(clk, true);
 	return 0;
 }

@@ -683,8 +682,13 @@ nvkm_clk_ctor(const struct nvkm_clk_func *func, struct nvkm_device *device,
 	clk->func = func;
 	INIT_LIST_HEAD(&clk->states);
 	clk->domains = func->domains;
+
+	clk->astate = NVKM_CLK_PSTATE_DEFAULT;
 	clk->ustate_ac = -1;
 	clk->ustate_dc = -1;
+	clk->exp_cstateid = NVKM_CLK_CSTATE_DEFAULT;
+	clk->temp = 90; /* reasonable default value */
+
 	clk->allow_reclock = allow_reclock;
 
 	INIT_WORK(&clk->work, nvkm_clk_update_work);

index bb4c214f..44a99c3c 100644
@@ -24,8 +24,8 @@ enum nvkm_devidx {
 	NVKM_SUBDEV_PMU,
 	NVKM_SUBDEV_VOLT,
 	NVKM_SUBDEV_ICCSENSE,
-	NVKM_SUBDEV_THERM,
 	NVKM_SUBDEV_CLK,
+	NVKM_SUBDEV_THERM,
 	NVKM_SUBDEV_SECBOOT,
 
 	NVKM_ENGINE_BSP,

index 27281c4e..b0a598f9 100644
@@ -160,7 +160,11 @@ nouveau_debugfs_pstate_set(struct file *file, const char __user *ubuf,
 		args.ustate = value;
 	}
 
+	ret = pm_runtime_get_sync(drm->dev);
+	if (IS_ERR_VALUE(ret) && ret != -EACCES)
+		return ret;
 	ret = nvif_mthd(ctrl, NVIF_CONTROL_PSTATE_USER, &args, sizeof(args));
+	pm_runtime_put_autosuspend(drm->dev);
 	if (ret < 0)
 		return ret;