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Fixed MTP to work with TWRP

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awab228 2018-06-19 23:16:04 +02:00
commit f6dfaef42e
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102
drivers/media/m2m1shot-helper.c Normal file
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/*
* drivers/media/m2m1shot-helper.c
*
* Copyright (C) 2014 Samsung Electronics Co., Ltd.
*
* Contact: Cho KyongHo <pullip.cho@samsung.com>
*
* 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.
*
* 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.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA
*
*/
#include <linux/kernel.h>
#include <linux/exynos_iovmm.h>
#include <linux/exynos_ion.h>
#include <media/m2m1shot-helper.h>
int m2m1shot_map_dma_buf(struct device *dev,
struct m2m1shot_buffer_plane_dma *plane,
enum dma_data_direction dir)
{
if (plane->dmabuf) {
plane->sgt = dma_buf_map_attachment(plane->attachment, dir);
if (IS_ERR(plane->sgt)) {
dev_err(dev, "%s: failed to map attacment of dma_buf\n",
__func__);
return PTR_ERR(plane->sgt);
}
exynos_ion_sync_dmabuf_for_device(dev, plane->dmabuf,
plane->bytes_used, dir);
} else { /* userptr */
exynos_ion_sync_sg_for_device(dev, plane->bytes_used,
plane->sgt, dir);
}
return 0;
}
EXPORT_SYMBOL(m2m1shot_map_dma_buf);
void m2m1shot_unmap_dma_buf(struct device *dev,
struct m2m1shot_buffer_plane_dma *plane,
enum dma_data_direction dir)
{
if (plane->dmabuf) {
exynos_ion_sync_dmabuf_for_cpu(dev, plane->dmabuf,
plane->bytes_used, dir);
dma_buf_unmap_attachment(plane->attachment, plane->sgt, dir);
} else {
exynos_ion_sync_sg_for_cpu(dev, plane->bytes_used,
plane->sgt, dir);
}
}
EXPORT_SYMBOL(m2m1shot_unmap_dma_buf);
int m2m1shot_dma_addr_map(struct device *dev,
struct m2m1shot_buffer_dma *buf,
int plane_idx, enum dma_data_direction dir)
{
struct m2m1shot_buffer_plane_dma *plane = &buf->plane[plane_idx];
dma_addr_t iova;
if (plane->dmabuf) {
iova = ion_iovmm_map(plane->attachment, 0,
plane->bytes_used, dir, 0);
} else {
iova = iovmm_map(dev, plane->sgt->sgl, 0,
plane->bytes_used, dir, 0);
}
if (IS_ERR_VALUE(iova))
return (int)iova;
buf->plane[plane_idx].dma_addr = iova + plane->offset;
return 0;
}
void m2m1shot_dma_addr_unmap(struct device *dev,
struct m2m1shot_buffer_dma *buf, int plane_idx)
{
struct m2m1shot_buffer_plane_dma *plane = &buf->plane[plane_idx];
dma_addr_t dma_addr = plane->dma_addr - plane->offset;
if (plane->dmabuf)
ion_iovmm_unmap(plane->attachment, dma_addr);
else
iovmm_unmap(dev, dma_addr);
plane->dma_addr = 0;
}