drivers/staging/media/atomisp/pci/isp/kernels/bh/bh_2/ia_css_bh.host.c

Source file repositories/reference/linux-study-clean/drivers/staging/media/atomisp/pci/isp/kernels/bh/bh_2/ia_css_bh.host.c

File Facts

System
Linux kernel
Corpus path
drivers/staging/media/atomisp/pci/isp/kernels/bh/bh_2/ia_css_bh.host.c
Extension
.c
Size
1343 bytes
Lines
52
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 "sh_css_internal.h"
#include "assert_support.h"
#include "sh_css_frac.h"

#include "ia_css_bh.host.h"

void ia_css_bh_hmem_decode(struct ia_css_3a_rgby_output *out_ptr,
			   const struct ia_css_bh_table *hmem_buf)
{
	int i;

	/*
	 * No weighted histogram, hence no grid definition
	 */
	if (!hmem_buf)
		return;
	assert(sizeof_hmem(HMEM0_ID) == sizeof(*hmem_buf));

	/* Deinterleave */
	for (i = 0; i < HMEM_UNIT_SIZE; i++) {
		out_ptr[i].r = hmem_buf->hmem[BH_COLOR_R][i];
		out_ptr[i].g = hmem_buf->hmem[BH_COLOR_G][i];
		out_ptr[i].b = hmem_buf->hmem[BH_COLOR_B][i];
		out_ptr[i].y = hmem_buf->hmem[BH_COLOR_Y][i];
		/* sh_css_print ("hmem[%d] = %d, %d, %d, %d\n",
			i, out_ptr[i].r, out_ptr[i].g, out_ptr[i].b, out_ptr[i].y); */
	}
}

void ia_css_bh_encode(struct sh_css_isp_bh_params *to,
		      const struct ia_css_3a_config *from,
		      unsigned int size)
{
	(void)size;
	/* coefficients to calculate Y */
	to->y_coef_r =
	    uDIGIT_FITTING(from->ae_y_coef_r, 16, SH_CSS_AE_YCOEF_SHIFT);
	to->y_coef_g =
	    uDIGIT_FITTING(from->ae_y_coef_g, 16, SH_CSS_AE_YCOEF_SHIFT);
	to->y_coef_b =
	    uDIGIT_FITTING(from->ae_y_coef_b, 16, SH_CSS_AE_YCOEF_SHIFT);
}

Annotation

Implementation Notes