1 files changed, 83 insertions, 9 deletions

diff --git a/drivers/gpu/host1x/syncpt.c b/drivers/gpu/host1x/syncpt.c
index 409745b949db..159c479829c9 100644
--- a/drivers/gpu/host1x/syncpt.c
+++ b/drivers/gpu/host1x/syncpt.c
@@ -30,9 +30,32 @@
 #define SYNCPT_CHECK_PERIOD (2 * HZ)
 #define MAX_STUCK_CHECK_COUNT 15
 
-static struct host1x_syncpt *_host1x_syncpt_alloc(struct host1x *host,
-                                                  struct device *dev,
-                                                  bool client_managed)
+static struct host1x_syncpt_base *
+host1x_syncpt_base_request(struct host1x *host)
+{
+        struct host1x_syncpt_base *bases = host->bases;
+        unsigned int i;
+
+        for (i = 0; i < host->info->nb_bases; i++)
+                if (!bases[i].requested)
+                        break;
+
+        if (i >= host->info->nb_bases)
+                return NULL;
+
+        bases[i].requested = true;
+        return &bases[i];
+}
+
+static void host1x_syncpt_base_free(struct host1x_syncpt_base *base)
+{
+        if (base)
+                base->requested = false;
+}
+
+static struct host1x_syncpt *host1x_syncpt_alloc(struct host1x *host,
+                                                 struct device *dev,
+                                                 unsigned long flags)
 {
         int i;
         struct host1x_syncpt *sp = host->syncpt;
@@ -44,6 +67,12 @@ static struct host1x_syncpt *_host1x_syncpt_alloc(struct host1x *host,
         if (i >= host->info->nb_pts)
                 return NULL;
 
+        if (flags & HOST1X_SYNCPT_HAS_BASE) {
+                sp->base = host1x_syncpt_base_request(host);
+                if (!sp->base)
+                        return NULL;
+        }
+
         name = kasprintf(GFP_KERNEL, "%02d-%s", sp->id,
                         dev ? dev_name(dev) : NULL);
         if (!name)
@@ -51,7 +80,11 @@ static struct host1x_syncpt *_host1x_syncpt_alloc(struct host1x *host,
 
         sp->dev = dev;
         sp->name = name;
-        sp->client_managed = client_managed;
+
+        if (flags & HOST1X_SYNCPT_CLIENT_MANAGED)
+                sp->client_managed = true;
+        else
+                sp->client_managed = false;
 
         return sp;
 }
@@ -303,25 +336,35 @@ int host1x_syncpt_patch_wait(struct host1x_syncpt *sp, void *patch_addr)
 
 int host1x_syncpt_init(struct host1x *host)
 {
+        struct host1x_syncpt_base *bases;
         struct host1x_syncpt *syncpt;
         int i;
 
         syncpt = devm_kzalloc(host->dev, sizeof(*syncpt) * host->info->nb_pts,
-                GFP_KERNEL);
+                              GFP_KERNEL);
         if (!syncpt)
                 return -ENOMEM;
 
-        for (i = 0; i < host->info->nb_pts; ++i) {
+        bases = devm_kzalloc(host->dev, sizeof(*bases) * host->info->nb_bases,
+                             GFP_KERNEL);
+        if (!bases)
+                return -ENOMEM;
+
+        for (i = 0; i < host->info->nb_pts; i++) {
                 syncpt[i].id = i;
                 syncpt[i].host = host;
         }
 
+        for (i = 0; i < host->info->nb_bases; i++)
+                bases[i].id = i;
+
         host->syncpt = syncpt;
+        host->bases = bases;
 
         host1x_syncpt_restore(host);
 
         /* Allocate sync point to use for clearing waits for expired fences */
-        host->nop_sp = _host1x_syncpt_alloc(host, NULL, false);
+        host->nop_sp = host1x_syncpt_alloc(host, NULL, 0);
         if (!host->nop_sp)
                 return -ENOMEM;
 
@@ -329,10 +372,10 @@ int host1x_syncpt_init(struct host1x *host)
 }
 
 struct host1x_syncpt *host1x_syncpt_request(struct device *dev,
-                                            bool client_managed)
+                                            unsigned long flags)
 {
         struct host1x *host = dev_get_drvdata(dev->parent);
-        return _host1x_syncpt_alloc(host, dev, client_managed);
+        return host1x_syncpt_alloc(host, dev, flags);
 }
 
 void host1x_syncpt_free(struct host1x_syncpt *sp)
@@ -340,7 +383,9 @@ void host1x_syncpt_free(struct host1x_syncpt *sp)
         if (!sp)
                 return;
 
+        host1x_syncpt_base_free(sp->base);
         kfree(sp->name);
+        sp->base = NULL;
         sp->dev = NULL;
         sp->name = NULL;
         sp->client_managed = false;
@@ -354,6 +399,25 @@ void host1x_syncpt_deinit(struct host1x *host)
                 kfree(sp->name);
 }
 
+/*
+ * Read max. It indicates how many operations there are in queue, either in
+ * channel or in a software thread.
+ * */
+u32 host1x_syncpt_read_max(struct host1x_syncpt *sp)
+{
+        smp_rmb();
+        return (u32)atomic_read(&sp->max_val);
+}
+
+/*
+ * Read min, which is a shadow of the current sync point value in hardware.
+ */
+u32 host1x_syncpt_read_min(struct host1x_syncpt *sp)
+{
+        smp_rmb();
+        return (u32)atomic_read(&sp->min_val);
+}
+
 int host1x_syncpt_nb_pts(struct host1x *host)
 {
         return host->info->nb_pts;
@@ -375,3 +439,13 @@ struct host1x_syncpt *host1x_syncpt_get(struct host1x *host, u32 id)
                 return NULL;
         return host->syncpt + id;
 }
+
+struct host1x_syncpt_base *host1x_syncpt_get_base(struct host1x_syncpt *sp)
+{
+        return sp ? sp->base : NULL;
+}
+
+u32 host1x_syncpt_base_id(struct host1x_syncpt_base *base)
+{
+        return base->id;
+}