/* * drivers/media/platform/s5p-mfc/s5p_mfc_opr.c * * Samsung MFC (Multi Function Codec - FIMV) driver * This file contains hw related functions. * * Kamil Debski, Copyright (c) 2012 Samsung Electronics Co., Ltd. * http://www.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. */ #include "s5p_mfc_debug.h" #include "s5p_mfc_opr.h" #include "s5p_mfc_opr_v5.h" #include "s5p_mfc_opr_v6.h" static struct s5p_mfc_hw_ops *s5p_mfc_ops; void s5p_mfc_init_hw_ops(struct s5p_mfc_dev *dev) { if (IS_MFCV6_PLUS(dev)) { s5p_mfc_ops = s5p_mfc_init_hw_ops_v6(); dev->warn_start = S5P_FIMV_ERR_WARNINGS_START_V6; } else { s5p_mfc_ops = s5p_mfc_init_hw_ops_v5(); dev->warn_start = S5P_FIMV_ERR_WARNINGS_START; } dev->mfc_ops = s5p_mfc_ops; } void s5p_mfc_init_regs(struct s5p_mfc_dev *dev) { if (IS_MFCV6_PLUS(dev)) dev->mfc_regs = s5p_mfc_init_regs_v6_plus(dev); } int s5p_mfc_alloc_priv_buf(struct device *dev, dma_addr_t base, struct s5p_mfc_priv_buf *b) { mfc_debug(3, "Allocating priv: %zu\n", b->size); b->virt = dma_alloc_coherent(dev, b->size, &b->dma, GFP_KERNEL); if (!b->virt) { mfc_err("Allocating private buffer of size %zu failed\n", b->size); return -ENOMEM; } if (b->dma < base) { mfc_err("Invalid memory configuration - buffer (%pad) is below base memory address(%pad)\n", &b->dma, &base); dma_free_coherent(dev, b->size, b->virt, b->dma); return -ENOMEM; } mfc_debug(3, "Allocated addr %p %pad\n", b->virt, &b->dma); return 0; } void s5p_mfc_release_priv_buf(struct device *dev, struct s5p_mfc_priv_buf *b) { if (b->virt) { dma_free_coherent(dev, b->size, b->virt, b->dma); b->virt = NULL; b->dma = 0; b->size = 0; } }