drivers/gpu/drm/nouveau/nvkm/engine/disp/ga102.c

Source file repositories/reference/linux-study-clean/drivers/gpu/drm/nouveau/nvkm/engine/disp/ga102.c

File Facts

System
Linux kernel
Corpus path
drivers/gpu/drm/nouveau/nvkm/engine/disp/ga102.c
Extension
.c
Size
4705 bytes
Lines
156
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 "head.h"
#include "ior.h"

#include <subdev/gsp.h>
#include <subdev/timer.h>

#include <nvif/class.h>

static int
ga102_sor_dp_links(struct nvkm_ior *sor, struct nvkm_i2c_aux *aux)
{
	struct nvkm_device *device = sor->disp->engine.subdev.device;
	const u32 soff = nv50_ior_base(sor);
	const u32 loff = nv50_sor_link(sor);
	u32 dpctrl = 0x00000000;
	u32 clksor = 0x00000000;

	switch (sor->dp.bw) {
	case 0x06: clksor |= 0x00000000; break;
	case 0x0a: clksor |= 0x00040000; break;
	case 0x14: clksor |= 0x00080000; break;
	case 0x1e: clksor |= 0x000c0000; break;
	case 0x08: clksor |= 0x00100000; break;
	case 0x09: clksor |= 0x00140000; break;
	case 0x0c: clksor |= 0x00180000; break;
	case 0x10: clksor |= 0x001c0000; break;
	default:
		WARN_ON(1);
		return -EINVAL;
	}

	dpctrl |= ((1 << sor->dp.nr) - 1) << 16;
	if (sor->dp.mst)
		dpctrl |= 0x40000000;
	if (sor->dp.ef)
		dpctrl |= 0x00004000;

	nvkm_mask(device, 0x612300 + soff, 0x007c0000, clksor);

	/*XXX*/
	nvkm_msec(device, 40, NVKM_DELAY);
	nvkm_mask(device, 0x612300 + soff, 0x00030000, 0x00010000);
	nvkm_mask(device, 0x61c10c + loff, 0x00000003, 0x00000001);

	nvkm_mask(device, 0x61c10c + loff, 0x401f4000, dpctrl);
	return 0;
}

static const struct nvkm_ior_func_dp
ga102_sor_dp = {
	.lanes = { 0, 1, 2, 3 },
	.links = ga102_sor_dp_links,
	.power = g94_sor_dp_power,
	.pattern = gm107_sor_dp_pattern,
	.drive = gm200_sor_dp_drive,
	.vcpi = tu102_sor_dp_vcpi,
	.audio = gv100_sor_dp_audio,
	.audio_sym = gv100_sor_dp_audio_sym,
	.watermark = gv100_sor_dp_watermark,
};

static void
ga102_sor_clock(struct nvkm_ior *sor)
{
	struct nvkm_device *device = sor->disp->engine.subdev.device;
	u32 div2 = 0;

	if (sor->asy.proto == TMDS) {
		if (sor->tmds.high_speed)
			div2 = 1;
	}

	nvkm_wr32(device, 0x00ec08 + (sor->id * 0x10), 0x00000000);
	nvkm_wr32(device, 0x00ec04 + (sor->id * 0x10), div2);
}

static const struct nvkm_ior_func
ga102_sor = {
	.route = {
		.get = gm200_sor_route_get,
		.set = gm200_sor_route_set,
	},
	.state = gv100_sor_state,
	.power = nv50_sor_power,
	.clock = ga102_sor_clock,
	.bl = &gt215_sor_bl,
	.hdmi = &gv100_sor_hdmi,
	.dp = &ga102_sor_dp,

Annotation

Implementation Notes