drm/nouveau/clk: allow selection of different power state for ac vs battery

v2:
- s/init/fini/ typo, reported by Alex

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

diff --git a/drivers/gpu/drm/nouveau/core/engine/device/ctrl.c b/drivers/gpu/drm/nouveau/core/engine/device/ctrl.c
index 4b69bf5..754fc1d 100644 (file)
--- a/drivers/gpu/drm/nouveau/core/engine/device/ctrl.c
+++ b/drivers/gpu/drm/nouveau/core/engine/device/ctrl.c
@@ -41,7 +41,10 @@ nouveau_control_mthd_pstate_info(struct nouveau_object *object, u32 mthd,
 
        if (clk) {
                args->count  = clk->state_nr;
-               args->ustate = clk->ustate;
+               if (clk->pwrsrc)
+                       args->ustate = clk->ustate_ac;
+               else
+                       args->ustate = clk->ustate_dc;
                args->pstate = clk->pstate;
        } else {
                args->count  = 0;
@@ -123,7 +126,7 @@ nouveau_control_mthd_pstate_user(struct nouveau_object *object, u32 mthd,
        if (size < sizeof(*args) || !clk)
                return -EINVAL;
 
-       return nouveau_clock_ustate(clk, args->state);
+       return nouveau_clock_ustate(clk, args->state, clk->pwrsrc);
 }
 
 struct nouveau_oclass

diff --git a/drivers/gpu/drm/nouveau/core/include/subdev/clock.h b/drivers/gpu/drm/nouveau/core/include/subdev/clock.h
index 3168e1a..9f37c09 100644 (file)
--- a/drivers/gpu/drm/nouveau/core/include/subdev/clock.h
+++ b/drivers/gpu/drm/nouveau/core/include/subdev/clock.h
@@ -75,8 +75,11 @@ struct nouveau_clock {
        wait_queue_head_t wait;
        atomic_t waiting;
 
+       struct nouveau_eventh *pwrsrc_ntfy;
+       int pwrsrc;
        int pstate; /* current */
-       int ustate; /* user-requested (-1 disabled, -2 perfmon) */
+       int ustate_ac; /* user-requested (-1 disabled, -2 perfmon) */
+       int ustate_dc; /* user-requested (-1 disabled, -2 perfmon) */
        int astate; /* perfmon adjustment (base) */
        int tstate; /* thermal adjustment (max-) */
        int dstate; /* display adjustment (min+) */
@@ -122,15 +125,17 @@ struct nouveau_clocks {
        struct nouveau_clock *clk = (p);                                       \
        _nouveau_clock_init(nv_object(clk));                                   \
 })
-#define nouveau_clock_fini(p,s)                                                \
-       nouveau_subdev_fini(&(p)->base, (s))
+#define nouveau_clock_fini(p,s) ({                                             \
+       struct nouveau_clock *clk = (p);                                       \
+       _nouveau_clock_fini(nv_object(clk), (s));                              \
+})
 
 int  nouveau_clock_create_(struct nouveau_object *, struct nouveau_object *,
                           struct nouveau_oclass *,
                           struct nouveau_clocks *, bool, int, void **);
 void _nouveau_clock_dtor(struct nouveau_object *);
-int _nouveau_clock_init(struct nouveau_object *);
-#define _nouveau_clock_fini _nouveau_subdev_fini
+int  _nouveau_clock_init(struct nouveau_object *);
+int  _nouveau_clock_fini(struct nouveau_object *, bool);
 
 extern struct nouveau_oclass nv04_clock_oclass;
 extern struct nouveau_oclass nv40_clock_oclass;
@@ -149,7 +154,7 @@ int nv04_clock_pll_prog(struct nouveau_clock *, u32 reg1,
 int nva3_clock_pll_calc(struct nouveau_clock *, struct nvbios_pll *,
                        int clk, struct nouveau_pll_vals *);
 
-int nouveau_clock_ustate(struct nouveau_clock *, int req);
+int nouveau_clock_ustate(struct nouveau_clock *, int req, int pwr);
 int nouveau_clock_astate(struct nouveau_clock *, int req, int rel);
 int nouveau_clock_dstate(struct nouveau_clock *, int req, int rel);
 int nouveau_clock_tstate(struct nouveau_clock *, int req, int rel);

diff --git a/drivers/gpu/drm/nouveau/core/os.h b/drivers/gpu/drm/nouveau/core/os.h
index d0ced94..e50decf 100644 (file)
--- a/drivers/gpu/drm/nouveau/core/os.h
+++ b/drivers/gpu/drm/nouveau/core/os.h
@@ -21,6 +21,7 @@
 #include <linux/interrupt.h>
 #include <linux/log2.h>
 #include <linux/pm_runtime.h>
+#include <linux/power_supply.h>
 
 #include <asm/unaligned.h>
 

diff --git a/drivers/gpu/drm/nouveau/core/subdev/clock/base.c b/drivers/gpu/drm/nouveau/core/subdev/clock/base.c
index 7796637..3ad848b 100644 (file)
--- a/drivers/gpu/drm/nouveau/core/subdev/clock/base.c
+++ b/drivers/gpu/drm/nouveau/core/subdev/clock/base.c
@@ -202,12 +202,15 @@ nouveau_pstate_work(struct work_struct *work)
 
        if (!atomic_xchg(&clk->waiting, 0))
                return;
+       clk->pwrsrc = power_supply_is_system_supplied();
 
-       nv_trace(clk, "P %d U %d A %d T %d D %d\n", clk->pstate,
-                clk->ustate, clk->astate, clk->tstate, clk->dstate);
+       nv_trace(clk, "P %d PWR %d U(AC) %d U(DC) %d A %d T %d D %d\n",
+                clk->pstate, clk->pwrsrc, clk->ustate_ac, clk->ustate_dc,
+                clk->astate, clk->tstate, clk->dstate);
 
-       if (clk->state_nr && clk->ustate != -1) {
-               pstate = (clk->ustate < 0) ? clk->astate : clk->ustate;
+       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 - clk->tstate);
                pstate = max(pstate, clk->dstate);
        } else {
@@ -224,6 +227,7 @@ nouveau_pstate_work(struct work_struct *work)
        }
 
        wake_up_all(&clk->wait);
+       nouveau_event_get(clk->pwrsrc_ntfy);
 }
 
 static int
@@ -381,17 +385,40 @@ nouveau_clock_ustate_update(struct nouveau_clock *clk, int req)
                req = i;
        }
 
-       clk->ustate = req;
-       return 0;
+       return req + 2;
+}
+
+static int
+nouveau_clock_nstate(struct nouveau_clock *clk, const char *mode, int arglen)
+{
+       int ret = 1;
+
+       if (strncasecmpz(mode, "disabled", arglen)) {
+               char save = mode[arglen];
+               long v;
+
+               ((char *)mode)[arglen] = '\0';
+               if (!kstrtol(mode, 0, &v)) {
+                       ret = nouveau_clock_ustate_update(clk, v);
+                       if (ret < 0)
+                               ret = 1;
+               }
+               ((char *)mode)[arglen] = save;
+       }
+
+       return ret - 2;
 }
 
 int
-nouveau_clock_ustate(struct nouveau_clock *clk, int req)
+nouveau_clock_ustate(struct nouveau_clock *clk, int req, int pwr)
 {
        int ret = nouveau_clock_ustate_update(clk, req);
-       if (ret)
-               return ret;
-       return nouveau_pstate_calc(clk, true);
+       if (ret >= 0) {
+               if (ret -= 2, pwr) clk->ustate_ac = ret;
+               else               clk->ustate_dc = ret;
+               return nouveau_pstate_calc(clk, true);
+       }
+       return ret;
 }
 
 int
@@ -424,9 +451,26 @@ nouveau_clock_dstate(struct nouveau_clock *clk, int req, int rel)
        return nouveau_pstate_calc(clk, true);
 }
 
+static int
+nouveau_clock_pwrsrc(void *data, u32 mask, int type)
+{
+       struct nouveau_clock *clk = data;
+       nouveau_pstate_calc(clk, false);
+       return NVKM_EVENT_DROP;
+}
+
 /******************************************************************************
  * subdev base class implementation
  *****************************************************************************/
+
+int
+_nouveau_clock_fini(struct nouveau_object *object, bool suspend)
+{
+       struct nouveau_clock *clk = (void *)object;
+       nouveau_event_put(clk->pwrsrc_ntfy);
+       return nouveau_subdev_fini(&clk->base, suspend);
+}
+
 int
 _nouveau_clock_init(struct nouveau_object *object)
 {
@@ -434,6 +478,10 @@ _nouveau_clock_init(struct nouveau_object *object)
        struct nouveau_clocks *clock = clk->domains;
        int ret;
 
+       ret = nouveau_subdev_init(&clk->base);
+       if (ret)
+               return ret;
+
        memset(&clk->bstate, 0x00, sizeof(clk->bstate));
        INIT_LIST_HEAD(&clk->bstate.list);
        clk->bstate.pstate = 0xff;
@@ -464,6 +512,8 @@ _nouveau_clock_dtor(struct nouveau_object *object)
        struct nouveau_clock *clk = (void *)object;
        struct nouveau_pstate *pstate, *temp;
 
+       nouveau_event_ref(NULL, &clk->pwrsrc_ntfy);
+
        list_for_each_entry_safe(pstate, temp, &clk->states, head) {
                nouveau_pstate_del(pstate);
        }
@@ -492,7 +542,8 @@ nouveau_clock_create_(struct nouveau_object *parent,
 
        INIT_LIST_HEAD(&clk->states);
        clk->domains = clocks;
-       clk->ustate = -1;
+       clk->ustate_ac = -1;
+       clk->ustate_dc = -1;
 
        INIT_WORK(&clk->work, nouveau_pstate_work);
        init_waitqueue_head(&clk->wait);
@@ -505,20 +556,26 @@ nouveau_clock_create_(struct nouveau_object *parent,
 
        clk->allow_reclock = allow_reclock;
 
+       ret = nouveau_event_new(device->ntfy, 1, NVKM_DEVICE_NTFY_POWER,
+                               nouveau_clock_pwrsrc, clk,
+                              &clk->pwrsrc_ntfy);
+       if (ret)
+               return ret;
+
        mode = nouveau_stropt(device->cfgopt, "NvClkMode", &arglen);
        if (mode) {
-               if (!strncasecmpz(mode, "disabled", arglen)) {
-                       clk->ustate = -1;
-               } else {
-                       char save = mode[arglen];
-                       long v;
-
-                       ((char *)mode)[arglen] = '\0';
-                       if (!kstrtol(mode, 0, &v))
-                               nouveau_clock_ustate_update(clk, v);
-                       ((char *)mode)[arglen] = save;
-               }
+               clk->ustate_ac = nouveau_clock_nstate(clk, mode, arglen);
+               clk->ustate_dc = nouveau_clock_nstate(clk, mode, arglen);
        }
 
+       mode = nouveau_stropt(device->cfgopt, "NvClkModeAC", &arglen);
+       if (mode)
+               clk->ustate_ac = nouveau_clock_nstate(clk, mode, arglen);
+
+       mode = nouveau_stropt(device->cfgopt, "NvClkModeDC", &arglen);
+       if (mode)
+               clk->ustate_dc = nouveau_clock_nstate(clk, mode, arglen);
+
+
        return 0;
 }