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/*
* drivers/gpu/ion/juno/juno_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"
u64 juno_dmamask = DMA_BIT_MASK(64);
struct platform_device juno_device_ion = {
.name = "ion-juno",
.id = -1,
};
struct ion_platform_heap juno_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 = &juno_device_ion.dev,
}
};
struct ion_platform_data juno_ion_pdata = {
.nr = 3,
.heaps = juno_heaps,
};
static int __init juno_ion_dev_init(void)
{
int ret;
ret = dma_declare_coherent_memory(&juno_device_ion.dev,
0x60000000, 0x60000000, 0x08000000,
DMA_MEMORY_MAP | DMA_MEMORY_EXCLUSIVE);
if (ret < 0)
{
pr_err("%s: dma_declare_contiguous failed %d\n", __func__, ret);
return ret;
}
juno_device_ion.dev.platform_data = &juno_ion_pdata;
juno_device_ion.dev.coherent_dma_mask = juno_dmamask;
juno_device_ion.dev.dma_mask = &juno_dmamask;
return platform_device_register(&juno_device_ion);
}
static void __exit juno_ion_dev_exit(void)
{
platform_device_unregister(&juno_device_ion);
}
module_init(juno_ion_dev_init);
module_exit(juno_ion_dev_exit);
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