From cfdffd5b9adc409370099fb5cfb47f1197f3edfe Mon Sep 17 00:00:00 2001
From: Sunita Nadampalli <sunitan@ti.com>
Date: Wed, 19 Oct 2011 13:40:39 -0500
Subject: HWC: Disable SGX force usage if protected layer is detected.
Fixes b/5475085
In secure playback mode, SGX does not have access to protected buffers and a
forced SGX usage results in an invalid frame to be rendered and displayed. This
patch disables SGX force usage if any of the layers is protected.
Change-Id: I188cf1639050687a96df42b310c12875fec383f7
Signed-off-by: Sunita Nadampalli <sunitan@ti.com>
Signed-off-by: Iliyan Malchev <malchev@google.com>
---
hwc/hwc.c | 13 +++++++++++++
1 file changed, 13 insertions(+)
diff --git a/hwc/hwc.c b/hwc/hwc.c
index f4386d3..f13f53b 100644
--- a/hwc/hwc.c
+++ b/hwc/hwc.c
@@ -222,6 +222,13 @@ static int scaled(hwc_layer_t *layer)
return WIDTH(layer->displayFrame) != w || HEIGHT(layer->displayFrame) != h;
}
+static int isprotected(hwc_layer_t *layer)
+{
+ IMG_native_handle_t *handle = (IMG_native_handle_t *)layer->handle;
+
+ return (handle->usage & GRALLOC_USAGE_PROTECTED);
+}
+
static int sync_id = 0;
#define is_BLENDED(blending) ((blending) != HWC_BLENDING_NONE)
@@ -944,6 +951,12 @@ static int omap4_hwc_prepare(struct hwc_composer_device *dev, hwc_layer_list_t*
num.dockable++;
num.mem += mem1d(handle);
+
+ /* Check if any of the layers are protected.
+ * if so, disable the SGX force usage
+ */
+ if (hwc_dev->force_sgx && isprotected(layer))
+ hwc_dev->force_sgx = 0;
}
}
--
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