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ion: Add reserve function to ion

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Rather than requiring each platform call memblock_remove or reserve
from the board file, add this to ion

Change-Id: Ie418a692c13e9e0cfe93ecc83d253d3ce860fc83
Signed-off-by: Rebecca Schultz Zavin <rebecca@android.com>
This commit is contained in:
Rebecca Schultz Zavin
2012-01-31 09:40:30 -08:00
parent 7191e9ba25
commit 6f9e56945d
2 changed files with 28 additions and 0 deletions
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17
drivers/gpu/ion/ion.c
View File

@@ -20,6 +20,7 @@
#include <linux/anon_inodes.h>
#include <linux/ion.h>
#include <linux/list.h>
#include <linux/memblock.h>
#include <linux/miscdevice.h>
#include <linux/export.h>
#include <linux/mm.h>
@@ -1185,3 +1186,19 @@ void ion_device_destroy(struct ion_device *dev)
/* XXX need to free the heaps and clients ? */
kfree(dev);
}
void __init ion_reserve(struct ion_platform_data *data)
{
int i, ret;
for (i = 0; i < data->nr; i++) {
if (data->heaps[i].size == 0)
continue;
ret = memblock_reserve(data->heaps[i].base,
data->heaps[i].size);
if (ret)
pr_err("memblock reserve of %x@%lx failed\n",
data->heaps[i].size,
data->heaps[i].base);
}
}

11
include/linux/ion.h
View File

@@ -86,6 +86,17 @@ struct ion_platform_data {
struct ion_platform_heap heaps[];
};
/**
* ion_reserve() - reserve memory for ion heaps if applicable
* @data: platform data specifying starting physical address and
* size
*
* Calls memblock reserve to set aside memory for heaps that are
* located at specific memory addresses or of specfic sizes not
* managed by the kernel
*/
void ion_reserve(struct ion_platform_data *data);
/**
* ion_client_create() - allocate a client and returns it
* @dev: the global ion device