diff options
Diffstat (limited to 'drivers/staging/android/ion/ion_of.c')
| -rw-r--r-- | drivers/staging/android/ion/ion_of.c | 184 |
1 files changed, 0 insertions, 184 deletions
diff --git a/drivers/staging/android/ion/ion_of.c b/drivers/staging/android/ion/ion_of.c deleted file mode 100644 index 7791c705ea31..000000000000 --- a/drivers/staging/android/ion/ion_of.c +++ /dev/null @@ -1,184 +0,0 @@ -/* - * Based on work from: - * Andrew Andrianov <andrew@ncrmnt.org> - * Google - * The Linux Foundation - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - */ - -#include <linux/init.h> -#include <linux/platform_device.h> -#include <linux/slab.h> -#include <linux/of.h> -#include <linux/of_platform.h> -#include <linux/of_address.h> -#include <linux/clk.h> -#include <linux/dma-mapping.h> -#include <linux/cma.h> -#include <linux/dma-contiguous.h> -#include <linux/io.h> -#include <linux/of_reserved_mem.h> -#include "ion.h" -#include "ion_priv.h" -#include "ion_of.h" - -static int ion_parse_dt_heap_common(struct device_node *heap_node, - struct ion_platform_heap *heap, - struct ion_of_heap *compatible) -{ - int i; - - for (i = 0; compatible[i].name; i++) { - if (of_device_is_compatible(heap_node, compatible[i].compat)) - break; - } - - if (!compatible[i].name) - return -ENODEV; - - heap->id = compatible[i].heap_id; - heap->type = compatible[i].type; - heap->name = compatible[i].name; - heap->align = compatible[i].align; - - /* Some kind of callback function pointer? */ - - pr_info("%s: id %d type %d name %s align %lx\n", __func__, - heap->id, heap->type, heap->name, heap->align); - return 0; -} - -static int ion_setup_heap_common(struct platform_device *parent, - struct device_node *heap_node, - struct ion_platform_heap *heap) -{ - int ret = 0; - - switch (heap->type) { - case ION_HEAP_TYPE_CARVEOUT: - case ION_HEAP_TYPE_CHUNK: - if (heap->base && heap->size) - return 0; - - ret = of_reserved_mem_device_init(heap->priv); - break; - default: - break; - } - - return ret; -} - -struct ion_platform_data *ion_parse_dt(struct platform_device *pdev, - struct ion_of_heap *compatible) -{ - int num_heaps, ret; - const struct device_node *dt_node = pdev->dev.of_node; - struct device_node *node; - struct ion_platform_heap *heaps; - struct ion_platform_data *data; - int i = 0; - - num_heaps = of_get_available_child_count(dt_node); - - if (!num_heaps) - return ERR_PTR(-EINVAL); - - heaps = devm_kzalloc(&pdev->dev, - sizeof(struct ion_platform_heap) * num_heaps, - GFP_KERNEL); - if (!heaps) - return ERR_PTR(-ENOMEM); - - data = devm_kzalloc(&pdev->dev, sizeof(struct ion_platform_data), - GFP_KERNEL); - if (!data) - return ERR_PTR(-ENOMEM); - - for_each_available_child_of_node(dt_node, node) { - struct platform_device *heap_pdev; - - ret = ion_parse_dt_heap_common(node, &heaps[i], compatible); - if (ret) - return ERR_PTR(ret); - - heap_pdev = of_platform_device_create(node, heaps[i].name, - &pdev->dev); - if (!heap_pdev) - return ERR_PTR(-ENOMEM); - heap_pdev->dev.platform_data = &heaps[i]; - - heaps[i].priv = &heap_pdev->dev; - - ret = ion_setup_heap_common(pdev, node, &heaps[i]); - if (ret) - goto out_err; - i++; - } - - data->heaps = heaps; - data->nr = num_heaps; - return data; - -out_err: - for ( ; i >= 0; i--) - if (heaps[i].priv) - of_device_unregister(to_platform_device(heaps[i].priv)); - - return ERR_PTR(ret); -} - -void ion_destroy_platform_data(struct ion_platform_data *data) -{ - int i; - - for (i = 0; i < data->nr; i++) - if (data->heaps[i].priv) - of_device_unregister(to_platform_device( - data->heaps[i].priv)); -} - -#ifdef CONFIG_OF_RESERVED_MEM -#include <linux/of.h> -#include <linux/of_fdt.h> -#include <linux/of_reserved_mem.h> - -static int rmem_ion_device_init(struct reserved_mem *rmem, struct device *dev) -{ - struct platform_device *pdev = to_platform_device(dev); - struct ion_platform_heap *heap = pdev->dev.platform_data; - - heap->base = rmem->base; - heap->base = rmem->size; - pr_debug("%s: heap %s base %pa size %pa dev %p\n", __func__, - heap->name, &rmem->base, &rmem->size, dev); - return 0; -} - -static void rmem_ion_device_release(struct reserved_mem *rmem, - struct device *dev) -{ -} - -static const struct reserved_mem_ops rmem_dma_ops = { - .device_init = rmem_ion_device_init, - .device_release = rmem_ion_device_release, -}; - -static int __init rmem_ion_setup(struct reserved_mem *rmem) -{ - phys_addr_t size = rmem->size; - - size = size / 1024; - - pr_info("Ion memory setup at %pa size %pa MiB\n", - &rmem->base, &size); - rmem->ops = &rmem_dma_ops; - return 0; -} - -RESERVEDMEM_OF_DECLARE(ion, "ion-region", rmem_ion_setup); -#endif |