// SPDX-License-Identifier: GPL-2.0-only
/*
* drivers / media / platform / samsung / 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/
*/
#include "s5p_mfc_debug.h"
#include "s5p_mfc_opr.h"
#include "s5p_mfc_opr_v5.h"
#include "s5p_mfc_opr_v6.h"
void s5p_mfc_init_hw_ops(struct s5p_mfc_dev *dev)
{
if (IS_MFCV6_PLUS(dev)) {
dev->mfc_ops = s5p_mfc_init_hw_ops_v6();
dev->warn_start = S5P_FIMV_ERR_WARNINGS_START_V6;
} else {
dev->mfc_ops = s5p_mfc_init_hw_ops_v5();
dev->warn_start = S5P_FIMV_ERR_WARNINGS_START;
}
}
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 s5p_mfc_dev *dev, unsigned int mem_ctx,
struct s5p_mfc_priv_buf *b)
{
unsigned int bits = dev->mem_size >> PAGE_SHIFT;
unsigned int count = b->size >> PAGE_SHIFT;
unsigned int align = (SZ_64K >> PAGE_SHIFT) - 1 ;
unsigned int start, offset;
mfc_debug(3 , "Allocating priv: %zu\n" , b->size);
if (dev->mem_virt) {
start = bitmap_find_next_zero_area(dev->mem_bitmap, bits, 0 , count, align);
if (start > bits)
goto no_mem;
bitmap_set(dev->mem_bitmap, start, count);
offset = start << PAGE_SHIFT;
b->virt = dev->mem_virt + offset;
b->dma = dev->mem_base + offset;
} else {
struct device *mem_dev = dev->mem_dev[mem_ctx];
dma_addr_t base = dev->dma_base[mem_ctx];
b->ctx = mem_ctx;
b->virt = dma_alloc_coherent(mem_dev, b->size, &b->dma, GFP_KERNEL);
if (!b->virt)
goto no_mem;
if (b->dma < base) {
mfc_err("Invalid memory configuration - buffer (%pad) is below base memory address(%pad)\n" ,
&b->dma, &base);
dma_free_coherent(mem_dev, b->size, b->virt, b->dma);
return -ENOMEM;
}
}
mfc_debug(3 , "Allocated addr %p %pad\n" , b->virt, &b->dma);
return 0 ;
no_mem:
mfc_err("Allocating private buffer of size %zu failed\n" , b->size);
return -ENOMEM;
}
int s5p_mfc_alloc_generic_buf(struct s5p_mfc_dev *dev, unsigned int mem_ctx,
struct s5p_mfc_priv_buf *b)
{
struct device *mem_dev = dev->mem_dev[mem_ctx];
mfc_debug(3 , "Allocating generic buf: %zu\n" , b->size);
b->ctx = mem_ctx;
b->virt = dma_alloc_coherent(mem_dev, b->size, &b->dma, GFP_KERNEL);
if (!b->virt)
goto no_mem;
mfc_debug(3 , "Allocated addr %p %pad\n" , b->virt, &b->dma);
return 0 ;
no_mem:
mfc_err("Allocating generic buffer of size %zu failed\n" , b->size);
return -ENOMEM;
}
void s5p_mfc_release_priv_buf(struct s5p_mfc_dev *dev,
struct s5p_mfc_priv_buf *b)
{
if (dev->mem_virt) {
unsigned int start = (b->dma - dev->mem_base) >> PAGE_SHIFT;
unsigned int count = b->size >> PAGE_SHIFT;
bitmap_clear(dev->mem_bitmap, start, count);
} else {
struct device *mem_dev = dev->mem_dev[b->ctx];
dma_free_coherent(mem_dev, b->size, b->virt, b->dma);
}
b->virt = NULL;
b->dma = 0 ;
b->size = 0 ;
}
void s5p_mfc_release_generic_buf(struct s5p_mfc_dev *dev,
struct s5p_mfc_priv_buf *b)
{
struct device *mem_dev = dev->mem_dev[b->ctx];
dma_free_coherent(mem_dev, b->size, b->virt, b->dma);
b->virt = NULL;
b->dma = 0 ;
b->size = 0 ;
}
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¤ Dauer der Verarbeitung: 0.2 Sekunden
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