drivers: ion: css: add ion driver for arm css subsystemsack-4.9-armlt-18.10

Change-Id: Id170c304275fd44f849461ab87b495331cc2b312
Signed-off-by: Tushar Khandelwal <tushar.khandelwal@arm.com>
Signed-off-by: Manoj Kumar <manoj.kumar3@arm.com>

1 files changed, 71 insertions, 0 deletions

diff --git a/drivers/staging/android/ion/css/css_ion_dev.c b/drivers/staging/android/ion/css/css_ion_dev.c
new file mode 100644
index 000000000000..6e88c492c6fd
--- /dev/null
+++ b/drivers/staging/android/ion/css/css_ion_dev.c
@@ -0,0 +1,71 @@
+/*
+ * drivers/gpu/ion/css/css_ion_dev.c
+ *
+ * Copyright (C) 2014 ARM, Inc.
+ *
+ * This software is licensed under the terms of the GNU General Public
+ * License version 2, as published by the Free Software Foundation, and
+ * may be copied, distributed, and modified under those terms.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ */
+
+#include <linux/err.h>
+#include <linux/platform_device.h>
+#include <linux/dma-mapping.h>
+#include "../ion.h"
+#include <linux/module.h> /* Needed by all modules */
+#include <linux/kernel.h> /* Needed for KERN_INFO */
+
+u64 css_dmamask = DMA_BIT_MASK(64);
+
+struct platform_device css_device_ion = {
+        .name           = "ion-css",
+        .id             = -1,
+};
+
+struct ion_platform_heap css_heaps[] = {
+		{
+			.id	= ION_HEAP_TYPE_SYSTEM,
+			.type	= ION_HEAP_TYPE_SYSTEM,
+			.name	= "system",
+		},
+		{
+			.id	= ION_HEAP_TYPE_SYSTEM_CONTIG,
+			.type	= ION_HEAP_TYPE_SYSTEM_CONTIG,
+			.name	= "system contig",
+		},
+		{
+			.id	= ION_HEAP_TYPE_DMA,
+			.type 	= ION_HEAP_TYPE_DMA,
+			.name	= "ion_dma_heap-3",
+			.priv	= &css_device_ion.dev,
+		}
+};
+
+struct ion_platform_data css_ion_pdata = {
+	.nr = 3,
+	.heaps = css_heaps,
+};
+
+static int __init css_ion_dev_init(void)
+{
+	css_device_ion.dev.platform_data = &css_ion_pdata;
+	css_device_ion.dev.coherent_dma_mask = css_dmamask;
+	css_device_ion.dev.dma_mask = &css_dmamask;
+
+
+	return platform_device_register(&css_device_ion);
+}
+
+static void __exit css_ion_dev_exit(void)
+{
+        platform_device_unregister(&css_device_ion);
+}
+
+module_init(css_ion_dev_init);
+module_exit(css_ion_dev_exit);