drivers/staging/media/atomisp/pci/isp/kernels/qplane/qplane_2/ia_css_qplane.host.c
Source file repositories/reference/linux-study-clean/drivers/staging/media/atomisp/pci/isp/kernels/qplane/qplane_2/ia_css_qplane.host.c
File Facts
- System
- Linux kernel
- Corpus path
drivers/staging/media/atomisp/pci/isp/kernels/qplane/qplane_2/ia_css_qplane.host.c- Extension
.c- Size
- 1392 bytes
- Lines
- 56
- 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.
- 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.
- Defines or uses C structs; map object ownership, embedded links, reference counts, and lock ownership.
Dependency Surface
ia_css_frame.hia_css_types.hsh_css_defs.hia_css_debug.hassert_support.hia_css_isp_configs.hisp.hia_css_qplane.host.h
Detected Declarations
function ia_css_qplane_configfunction ia_css_qplane_configure
Annotated Snippet
// SPDX-License-Identifier: GPL-2.0
/*
* Support for Intel Camera Imaging ISP subsystem.
* Copyright (c) 2015, Intel Corporation.
*/
#include "ia_css_frame.h"
#include "ia_css_types.h"
#include "sh_css_defs.h"
#include "ia_css_debug.h"
#include "assert_support.h"
#define IA_CSS_INCLUDE_CONFIGURATIONS
#include "ia_css_isp_configs.h"
#include "isp.h"
#include "ia_css_qplane.host.h"
static const struct ia_css_qplane_configuration default_config = {
.pipe = (struct sh_css_sp_pipeline *)NULL,
};
int ia_css_qplane_config(struct sh_css_isp_qplane_isp_config *to,
const struct ia_css_qplane_configuration *from,
unsigned int size)
{
unsigned int elems_a = ISP_VEC_NELEMS;
int ret;
ret = ia_css_dma_configure_from_info(&to->port_b, from->info);
if (ret)
return ret;
to->width_a_over_b = elems_a / to->port_b.elems;
/* Assume divisiblity here, may need to generalize to fixed point. */
if (elems_a % to->port_b.elems != 0)
return -EINVAL;
to->inout_port_config = from->pipe->inout_port_config;
to->format = from->info->format;
return 0;
}
int ia_css_qplane_configure(const struct sh_css_sp_pipeline *pipe,
const struct ia_css_binary *binary,
const struct ia_css_frame_info *info)
{
struct ia_css_qplane_configuration config = default_config;
config.pipe = pipe;
config.info = info;
return ia_css_configure_qplane(binary, &config);
}
Annotation
- Immediate include surface: `ia_css_frame.h`, `ia_css_types.h`, `sh_css_defs.h`, `ia_css_debug.h`, `assert_support.h`, `ia_css_isp_configs.h`, `isp.h`, `ia_css_qplane.host.h`.
- Detected declarations: `function ia_css_qplane_config`, `function ia_css_qplane_configure`.
- Atlas domain: Driver Families / drivers/staging.
- Implementation status: source implementation candidate.
Implementation Notes
- This generated page is the file-by-file coverage layer; curated subsystem chapters should link here when they synthesize a multi-file control flow.
- Core OS pages should be promoted from atlas-only to deep-reviewed when they explain data structures, invariants, locking, lifecycle, and C implementation snippets.
- Driver-family pages are intentionally pattern-oriented unless they are part of the selected PCIe/NVMe representative device path.