drivers/gpu/drm/nouveau/nvkm/engine/disp/g84.c

Source file repositories/reference/linux-study-clean/drivers/gpu/drm/nouveau/nvkm/engine/disp/g84.c

File Facts

System
Linux kernel
Corpus path
drivers/gpu/drm/nouveau/nvkm/engine/disp/g84.c
Extension
.c
Size
9298 bytes
Lines
350
Domain
Driver Families
Bucket
drivers/gpu
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

#include "priv.h"
#include "chan.h"
#include "hdmi.h"
#include "head.h"
#include "ior.h"

#include <nvif/class.h>

static void
g84_sor_hdmi_infoframe_vsi(struct nvkm_ior *ior, int head, void *data, u32 size)
{
	struct nvkm_device *device = ior->disp->engine.subdev.device;
	struct packed_hdmi_infoframe vsi;
	const u32 hoff = head * 0x800;

	nvkm_mask(device, 0x61653c + hoff, 0x00010001, 0x00010000);
	if (!size)
		return;

	pack_hdmi_infoframe(&vsi, data, size);

	nvkm_wr32(device, 0x616544 + hoff, vsi.header);
	nvkm_wr32(device, 0x616548 + hoff, vsi.subpack0_low);
	nvkm_wr32(device, 0x61654c + hoff, vsi.subpack0_high);
	/* Is there a second (or up to fourth?) set of subpack registers here? */
	/* nvkm_wr32(device, 0x616550 + hoff, vsi.subpack1_low); */
	/* nvkm_wr32(device, 0x616554 + hoff, vsi.subpack1_high); */

	nvkm_mask(device, 0x61653c + hoff, 0x00010001, 0x00010001);
}

static void
g84_sor_hdmi_infoframe_avi(struct nvkm_ior *ior, int head, void *data, u32 size)
{
	struct nvkm_device *device = ior->disp->engine.subdev.device;
	struct packed_hdmi_infoframe avi;
	const u32 hoff = head * 0x800;

	pack_hdmi_infoframe(&avi, data, size);

	nvkm_mask(device, 0x616520 + hoff, 0x00000001, 0x00000000);
	if (!size)
		return;

	nvkm_wr32(device, 0x616528 + hoff, avi.header);
	nvkm_wr32(device, 0x61652c + hoff, avi.subpack0_low);
	nvkm_wr32(device, 0x616530 + hoff, avi.subpack0_high);
	nvkm_wr32(device, 0x616534 + hoff, avi.subpack1_low);
	nvkm_wr32(device, 0x616538 + hoff, avi.subpack1_high);

	nvkm_mask(device, 0x616520 + hoff, 0x00000001, 0x00000001);
}


static void
g84_sor_hdmi_ctrl(struct nvkm_ior *ior, int head, bool enable, u8 max_ac_packet, u8 rekey)
{
	struct nvkm_device *device = ior->disp->engine.subdev.device;
	const u32 ctrl = 0x40000000 * enable |
			 0x1f000000 /* ??? */ |
			 max_ac_packet << 16 |
			 rekey;
	const u32 hoff = head * 0x800;

	if (!(ctrl & 0x40000000)) {
		nvkm_mask(device, 0x6165a4 + hoff, 0x40000000, 0x00000000);
		nvkm_mask(device, 0x616500 + hoff, 0x00000001, 0x00000000);
		return;
	}

	/* Audio InfoFrame */
	nvkm_mask(device, 0x616500 + hoff, 0x00000001, 0x00000000);
	nvkm_wr32(device, 0x616508 + hoff, 0x000a0184);
	nvkm_wr32(device, 0x61650c + hoff, 0x00000071);
	nvkm_wr32(device, 0x616510 + hoff, 0x00000000);
	nvkm_mask(device, 0x616500 + hoff, 0x00000001, 0x00000001);


	nvkm_mask(device, 0x6165d0 + hoff, 0x00070001, 0x00010001); /* SPARE, HW_CTS */
	nvkm_mask(device, 0x616568 + hoff, 0x00010101, 0x00000000); /* ACR_CTRL, ?? */
	nvkm_mask(device, 0x616578 + hoff, 0x80000000, 0x80000000); /* ACR_0441_ENABLE */

	/* ??? */
	nvkm_mask(device, 0x61733c, 0x00100000, 0x00100000); /* RESETF */
	nvkm_mask(device, 0x61733c, 0x10000000, 0x10000000); /* LOOKUP_EN */
	nvkm_mask(device, 0x61733c, 0x00100000, 0x00000000); /* !RESETF */

	/* HDMI_CTRL */
	nvkm_mask(device, 0x6165a4 + hoff, 0x5f1f007f, ctrl);
}

Annotation

Implementation Notes