drivers/staging/media/atomisp/pci/css_2401_system/host/isys_dma_private.h

Source file repositories/reference/linux-study-clean/drivers/staging/media/atomisp/pci/css_2401_system/host/isys_dma_private.h

File Facts

System
Linux kernel
Corpus path
drivers/staging/media/atomisp/pci/css_2401_system/host/isys_dma_private.h
Extension
.h
Size
1237 bytes
Lines
50
Domain
Driver Families
Bucket
drivers/staging
Inferred role
Driver Families: implementation source
Status
source implementation candidate

Why This File Exists

Repeatable hardware-adapter layer. Deep compatibility for every driver is out of scope; this atlas records patterns, probe lifecycles, bus glue, IRQ/DMA usage, and links back to core abstractions.

Dependency Surface

Detected Declarations

Annotated Snippet

#ifndef __ISYS_DMA_PRIVATE_H_INCLUDED__
#define __ISYS_DMA_PRIVATE_H_INCLUDED__

#include "isys_dma_public.h"
#include "device_access.h"
#include "assert_support.h"
#include "dma.h"
#include "dma_v2_defs.h"
#include "print_support.h"

void isys2401_dma_reg_store(const isys2401_dma_ID_t	dma_id,
			    const unsigned int		reg,
			    const hrt_data		value)
{
	unsigned int reg_loc;

	assert(dma_id < N_ISYS2401_DMA_ID);
	assert(ISYS2401_DMA_BASE[dma_id] != (hrt_address) - 1);

	reg_loc = ISYS2401_DMA_BASE[dma_id] + (reg * sizeof(hrt_data));

	ia_css_device_store_uint32(reg_loc, value);
}

hrt_data isys2401_dma_reg_load(const isys2401_dma_ID_t	dma_id,
			       const unsigned int	reg)
{
	unsigned int reg_loc;
	hrt_data value;

	assert(dma_id < N_ISYS2401_DMA_ID);
	assert(ISYS2401_DMA_BASE[dma_id] != (hrt_address) - 1);

	reg_loc = ISYS2401_DMA_BASE[dma_id] + (reg * sizeof(hrt_data));

	value = ia_css_device_load_uint32(reg_loc);
	ia_css_print("isys dma load from addr(0x%x) val(%u)\n", reg_loc,
		     (unsigned int)value);

	return value;
}

#endif /* __ISYS_DMA_PRIVATE_H_INCLUDED__ */

Annotation

Implementation Notes