drivers/staging/media/atomisp/pci/isp/kernels/ref/ref_1.0/ia_css_ref.host.c

Source file repositories/reference/linux-study-clean/drivers/staging/media/atomisp/pci/isp/kernels/ref/ref_1.0/ia_css_ref.host.c

File Facts

System
Linux kernel
Corpus path
drivers/staging/media/atomisp/pci/isp/kernels/ref/ref_1.0/ia_css_ref.host.c
Extension
.c
Size
2033 bytes
Lines
78
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

if (from->ref_frames[i]) {
			to->ref_frame_addr_y[i] = from->ref_frames[i]->data +
						  from->ref_frames[i]->planes.yuv.y.offset;
			to->ref_frame_addr_c[i] = from->ref_frames[i]->data +
						  from->ref_frames[i]->planes.yuv.u.offset;
		} else {
			to->ref_frame_addr_y[i] = 0;
			to->ref_frame_addr_c[i] = 0;
		}
	}

	/* 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_ref_configure(const struct ia_css_binary        *binary,
			 const struct ia_css_frame * const *ref_frames,
			 const uint32_t dvs_frame_delay)
{
	struct ia_css_ref_configuration config;
	unsigned int i;

	for (i = 0; i < MAX_NUM_VIDEO_DELAY_FRAMES; i++)
		config.ref_frames[i] = ref_frames[i];

	config.dvs_frame_delay = dvs_frame_delay;

	return ia_css_configure_ref(binary, &config);
}

void
ia_css_init_ref_state(
    struct sh_css_isp_ref_dmem_state *state,
    unsigned int size)
{
	(void)size;
	assert(MAX_NUM_VIDEO_DELAY_FRAMES >= 2);
	state->ref_in_buf_idx = 0;
	state->ref_out_buf_idx = 1;
}

Annotation

Implementation Notes