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https://github.com/edk2-porting/linux-next.git
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317b4ca498
Change internal buffer allocation from vb2 memory ops call to direct calls of dma_alloc_coherent. This change shortens the code and makes it much more readable. Signed-off-by: Kamil Debski <k.debski@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
62 lines
1.4 KiB
C
62 lines
1.4 KiB
C
/*
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* drivers/media/platform/s5p-mfc/s5p_mfc_opr.c
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*
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* Samsung MFC (Multi Function Codec - FIMV) driver
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* This file contains hw related functions.
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*
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* Kamil Debski, Copyright (c) 2012 Samsung Electronics Co., Ltd.
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* http://www.samsung.com/
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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#include "s5p_mfc_debug.h"
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#include "s5p_mfc_opr.h"
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#include "s5p_mfc_opr_v5.h"
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#include "s5p_mfc_opr_v6.h"
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static struct s5p_mfc_hw_ops *s5p_mfc_ops;
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void s5p_mfc_init_hw_ops(struct s5p_mfc_dev *dev)
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{
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if (IS_MFCV6(dev)) {
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s5p_mfc_ops = s5p_mfc_init_hw_ops_v6();
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dev->warn_start = S5P_FIMV_ERR_WARNINGS_START_V6;
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} else {
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s5p_mfc_ops = s5p_mfc_init_hw_ops_v5();
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dev->warn_start = S5P_FIMV_ERR_WARNINGS_START;
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}
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dev->mfc_ops = s5p_mfc_ops;
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}
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int s5p_mfc_alloc_priv_buf(struct device *dev,
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struct s5p_mfc_priv_buf *b)
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{
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mfc_debug(3, "Allocating priv: %d\n", b->size);
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b->virt = dma_alloc_coherent(dev, b->size, &b->dma, GFP_KERNEL);
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if (!b->virt) {
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mfc_err("Allocating private buffer failed\n");
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return -ENOMEM;
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}
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mfc_debug(3, "Allocated addr %p %08x\n", b->virt, b->dma);
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return 0;
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}
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void s5p_mfc_release_priv_buf(struct device *dev,
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struct s5p_mfc_priv_buf *b)
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{
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if (b->virt) {
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dma_free_coherent(dev, b->size, b->virt, b->dma);
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b->virt = 0;
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b->dma = 0;
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b->size = 0;
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}
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}
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