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path: root/drivers/gpu/host1x/syncpt.c
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Diffstat (limited to 'drivers/gpu/host1x/syncpt.c')
-rw-r--r--drivers/gpu/host1x/syncpt.c24
1 files changed, 16 insertions, 8 deletions
diff --git a/drivers/gpu/host1x/syncpt.c b/drivers/gpu/host1x/syncpt.c
index 048ac9e344ce..a2a952adc136 100644
--- a/drivers/gpu/host1x/syncpt.c
+++ b/drivers/gpu/host1x/syncpt.c
@@ -54,7 +54,7 @@ static void host1x_syncpt_base_free(struct host1x_syncpt_base *base)
}
static struct host1x_syncpt *host1x_syncpt_alloc(struct host1x *host,
- struct device *dev,
+ struct host1x_client *client,
unsigned long flags)
{
int i;
@@ -76,11 +76,11 @@ static struct host1x_syncpt *host1x_syncpt_alloc(struct host1x *host,
}
name = kasprintf(GFP_KERNEL, "%02u-%s", sp->id,
- dev ? dev_name(dev) : NULL);
+ client ? dev_name(client->dev) : NULL);
if (!name)
goto free_base;
- sp->dev = dev;
+ sp->client = client;
sp->name = name;
if (flags & HOST1X_SYNCPT_CLIENT_MANAGED)
@@ -398,6 +398,13 @@ int host1x_syncpt_init(struct host1x *host)
for (i = 0; i < host->info->nb_pts; i++) {
syncpt[i].id = i;
syncpt[i].host = host;
+
+ /*
+ * Unassign syncpt from channels for purposes of Tegra186
+ * syncpoint protection. This prevents any channel from
+ * accessing it until it is reassigned.
+ */
+ host1x_hw_syncpt_assign_to_channel(host, &syncpt[i], NULL);
}
for (i = 0; i < host->info->nb_bases; i++)
@@ -408,6 +415,7 @@ int host1x_syncpt_init(struct host1x *host)
host->bases = bases;
host1x_syncpt_restore(host);
+ host1x_hw_syncpt_enable_protection(host);
/* Allocate sync point to use for clearing waits for expired fences */
host->nop_sp = host1x_syncpt_alloc(host, NULL, 0);
@@ -419,7 +427,7 @@ int host1x_syncpt_init(struct host1x *host)
/**
* host1x_syncpt_request() - request a syncpoint
- * @dev: device requesting the syncpoint
+ * @client: client requesting the syncpoint
* @flags: flags
*
* host1x client drivers can use this function to allocate a syncpoint for
@@ -427,12 +435,12 @@ int host1x_syncpt_init(struct host1x *host)
* use by the client exclusively. When no longer using a syncpoint, a host1x
* client driver needs to release it using host1x_syncpt_free().
*/
-struct host1x_syncpt *host1x_syncpt_request(struct device *dev,
+struct host1x_syncpt *host1x_syncpt_request(struct host1x_client *client,
unsigned long flags)
{
- struct host1x *host = dev_get_drvdata(dev->parent);
+ struct host1x *host = dev_get_drvdata(client->parent->parent);
- return host1x_syncpt_alloc(host, dev, flags);
+ return host1x_syncpt_alloc(host, client, flags);
}
EXPORT_SYMBOL(host1x_syncpt_request);
@@ -456,7 +464,7 @@ void host1x_syncpt_free(struct host1x_syncpt *sp)
host1x_syncpt_base_free(sp->base);
kfree(sp->name);
sp->base = NULL;
- sp->dev = NULL;
+ sp->client = NULL;
sp->name = NULL;
sp->client_managed = false;