1/*
2 * drivers/media/platform/s5p-mfc/s5p_mfc_opr.c
3 *
4 * Samsung MFC (Multi Function Codec - FIMV) driver
5 * This file contains hw related functions.
6 *
7 * Kamil Debski, Copyright (c) 2012 Samsung Electronics Co., Ltd.
8 * http://www.samsung.com/
9 *
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License version 2 as
12 * published by the Free Software Foundation.
13 */
14
15#include "s5p_mfc_debug.h"
16#include "s5p_mfc_opr.h"
17#include "s5p_mfc_opr_v5.h"
18#include "s5p_mfc_opr_v6.h"
19
20static struct s5p_mfc_hw_ops *s5p_mfc_ops;
21
22void s5p_mfc_init_hw_ops(struct s5p_mfc_dev *dev)
23{
24	if (IS_MFCV6_PLUS(dev)) {
25		s5p_mfc_ops = s5p_mfc_init_hw_ops_v6();
26		dev->warn_start = S5P_FIMV_ERR_WARNINGS_START_V6;
27	} else {
28		s5p_mfc_ops = s5p_mfc_init_hw_ops_v5();
29		dev->warn_start = S5P_FIMV_ERR_WARNINGS_START;
30	}
31	dev->mfc_ops = s5p_mfc_ops;
32}
33
34void s5p_mfc_init_regs(struct s5p_mfc_dev *dev)
35{
36	if (IS_MFCV6_PLUS(dev))
37		dev->mfc_regs = s5p_mfc_init_regs_v6_plus(dev);
38}
39
40int s5p_mfc_alloc_priv_buf(struct device *dev, dma_addr_t base,
41					struct s5p_mfc_priv_buf *b)
42{
43	mfc_debug(3, "Allocating priv: %zu\n", b->size);
44
45	b->virt = dma_alloc_coherent(dev, b->size, &b->dma, GFP_KERNEL);
46
47	if (!b->virt) {
48		mfc_err("Allocating private buffer failed\n");
49		return -ENOMEM;
50	}
51
52	if (b->dma < base) {
53		mfc_err("Invaling memory configuration!\n");
54		mfc_err("Allocated buffer (%pad) is lower than memory base address (%pad)\n",
55			&b->dma, &base);
56		dma_free_coherent(dev, b->size, b->virt, b->dma);
57		return -ENOMEM;
58	}
59
60	mfc_debug(3, "Allocated addr %p %pad\n", b->virt, &b->dma);
61	return 0;
62}
63
64void s5p_mfc_release_priv_buf(struct device *dev,
65						struct s5p_mfc_priv_buf *b)
66{
67	if (b->virt) {
68		dma_free_coherent(dev, b->size, b->virt, b->dma);
69		b->virt = NULL;
70		b->dma = 0;
71		b->size = 0;
72	}
73}
74
75