drivers/staging/media/atomisp/pci/isp/kernels/tnr/tnr_1.0/ia_css_tnr.host.c

Source file repositories/reference/linux-study-clean/drivers/staging/media/atomisp/pci/isp/kernels/tnr/tnr_1.0/ia_css_tnr.host.c

File Facts

System
Linux kernel
Corpus path
drivers/staging/media/atomisp/pci/isp/kernels/tnr/tnr_1.0/ia_css_tnr.host.c
Extension
.c
Size
2847 bytes
Lines
114
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

// SPDX-License-Identifier: GPL-2.0
/*
 * Support for Intel Camera Imaging ISP subsystem.
 * Copyright (c) 2015, Intel Corporation.
 */

#include "ia_css_types.h"
#include "ia_css_frame.h"
#include "sh_css_defs.h"
#include "ia_css_debug.h"
#include "sh_css_frac.h"
#include "assert_support.h"
#define IA_CSS_INCLUDE_CONFIGURATIONS
#include "ia_css_isp_configs.h"
#include "isp.h"

#include "ia_css_tnr.host.h"
const struct ia_css_tnr_config default_tnr_config = {
	32768,
	32,
	32,
};

void
ia_css_tnr_encode(
    struct sh_css_isp_tnr_params *to,
    const struct ia_css_tnr_config *from,
    unsigned int size)
{
	(void)size;
	to->coef =
	    uDIGIT_FITTING(from->gain, 16, SH_CSS_TNR_COEF_SHIFT);
	to->threshold_Y =
	    uDIGIT_FITTING(from->threshold_y, 16, SH_CSS_ISP_YUV_BITS);
	to->threshold_C =
	    uDIGIT_FITTING(from->threshold_uv, 16, SH_CSS_ISP_YUV_BITS);
}

void
ia_css_tnr_dump(
    const struct sh_css_isp_tnr_params *tnr,
    unsigned int level)
{
	if (!tnr) return;
	ia_css_debug_dtrace(level, "Temporal Noise Reduction:\n");
	ia_css_debug_dtrace(level, "\t%-32s = %d\n",
			    "tnr_coef", tnr->coef);
	ia_css_debug_dtrace(level, "\t%-32s = %d\n",
			    "tnr_threshold_Y", tnr->threshold_Y);
	ia_css_debug_dtrace(level, "\t%-32s = %d\n",
			    "tnr_threshold_C", tnr->threshold_C);
}

void
ia_css_tnr_debug_dtrace(
    const struct ia_css_tnr_config *config,
    unsigned int level)
{
	ia_css_debug_dtrace(level,
			    "config.gain=%d, config.threshold_y=%d, config.threshold_uv=%d\n",
			    config->gain,
			    config->threshold_y, config->threshold_uv);
}

int ia_css_tnr_config(struct sh_css_isp_tnr_isp_config *to,
		      const struct ia_css_tnr_configuration *from,
		      unsigned int size)
{
	unsigned int elems_a = ISP_VEC_NELEMS;
	unsigned int i;
	int ret;

	ret = ia_css_dma_configure_from_info(&to->port_b, &from->tnr_frames[0]->frame_info);
	if (ret)
		return ret;
	to->width_a_over_b = elems_a / to->port_b.elems;
	to->frame_height = from->tnr_frames[0]->frame_info.res.height;
	for (i = 0; i < NUM_VIDEO_TNR_FRAMES; i++) {
		to->tnr_frame_addr[i] = from->tnr_frames[i]->data +
					from->tnr_frames[i]->planes.yuyv.offset;
	}

	/* Assume divisiblity here, may need to generalize to fixed point. */
	if (elems_a % to->port_b.elems != 0)
		return -EINVAL;

	return 0;
}

int ia_css_tnr_configure(const struct ia_css_binary     *binary,

Annotation

Implementation Notes