gpu: host1x: Add syncpoint wait and interrupts

Add support for sync point interrupts, and sync point wait. Sync
point wait used interrupts for unblocking wait.

Signed-off-by: Arto Merilainen <amerilainen@nvidia.com>
Signed-off-by: Terje Bergstrom <tbergstrom@nvidia.com>
Reviewed-by: Thierry Reding <thierry.reding@avionic-design.de>
Tested-by: Thierry Reding <thierry.reding@avionic-design.de>
Tested-by: Erik Faye-Lund <kusmabite@gmail.com>
Signed-off-by: Thierry Reding <thierry.reding@avionic-design.de>

1 files changed, 12 insertions, 0 deletions

diff --git a/drivers/gpu/host1x/dev.c b/drivers/gpu/host1x/dev.c
index 0d6002cb67c1..b967f6e8df55 100644
--- a/drivers/gpu/host1x/dev.c
+++ b/drivers/gpu/host1x/dev.c
@@ -28,6 +28,7 @@
 #include <trace/events/host1x.h>
 
 #include "dev.h"
+#include "intr.h"
 #include "hw/host1x01.h"
 
 void host1x_sync_writel(struct host1x *host1x, u32 v, u32 r)
@@ -123,13 +124,24 @@ static int host1x_probe(struct platform_device *pdev)
                 return err;
         }
 
+        err = host1x_intr_init(host, syncpt_irq);
+        if (err) {
+                dev_err(&pdev->dev, "failed to initialize interrupts\n");
+                goto fail_deinit_syncpt;
+        }
+
         return 0;
+
+fail_deinit_syncpt:
+        host1x_syncpt_deinit(host);
+        return err;
 }
 
 static int __exit host1x_remove(struct platform_device *pdev)
 {
         struct host1x *host = platform_get_drvdata(pdev);
 
+        host1x_intr_deinit(host);
         host1x_syncpt_deinit(host);
         clk_disable_unprepare(host->clk);