drivers/gpu/drm/nouveau/nvkm/subdev/therm/ic.c

Source file repositories/reference/linux-study-clean/drivers/gpu/drm/nouveau/nvkm/subdev/therm/ic.c

File Facts

System
Linux kernel
Corpus path
drivers/gpu/drm/nouveau/nvkm/subdev/therm/ic.c
Extension
.c
Size
4146 bytes
Lines
128
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

to_i2c_driver(client->dev.driver)->detect(client, info)) {
		i2c_unregister_device(client);
		return false;
	}

	nvkm_debug(&therm->subdev,
		   "Found an %s at address 0x%x (controlled by lm_sensors, "
		   "temp offset %+i C)\n",
		   info->type, info->addr, sensor->offset_constant);
	therm->ic = client;
	return true;
}

static struct nvkm_i2c_bus_probe
nv_board_infos[] = {
	{ { I2C_BOARD_INFO("w83l785ts", 0x2d) }, 0 },
	{ { I2C_BOARD_INFO("w83781d", 0x2d) }, 0  },
	{ { I2C_BOARD_INFO("adt7473", 0x2e) }, 40  },
	{ { I2C_BOARD_INFO("adt7473", 0x2d) }, 40  },
	{ { I2C_BOARD_INFO("adt7473", 0x2c) }, 40  },
	{ { I2C_BOARD_INFO("f75375", 0x2e) }, 0  },
	{ { I2C_BOARD_INFO("lm99", 0x4c) }, 0  },
	{ { I2C_BOARD_INFO("lm90", 0x4c) }, 0  },
	{ { I2C_BOARD_INFO("lm90", 0x4d) }, 0  },
	{ { I2C_BOARD_INFO("adm1021", 0x18) }, 0  },
	{ { I2C_BOARD_INFO("adm1021", 0x19) }, 0  },
	{ { I2C_BOARD_INFO("adm1021", 0x1a) }, 0  },
	{ { I2C_BOARD_INFO("adm1021", 0x29) }, 0  },
	{ { I2C_BOARD_INFO("adm1021", 0x2a) }, 0  },
	{ { I2C_BOARD_INFO("adm1021", 0x2b) }, 0  },
	{ { I2C_BOARD_INFO("adm1021", 0x4c) }, 0  },
	{ { I2C_BOARD_INFO("adm1021", 0x4d) }, 0  },
	{ { I2C_BOARD_INFO("adm1021", 0x4e) }, 0  },
	{ { I2C_BOARD_INFO("lm63", 0x18) }, 0  },
	{ { I2C_BOARD_INFO("lm63", 0x4e) }, 0  },
	{ }
};

void
nvkm_therm_ic_ctor(struct nvkm_therm *therm)
{
	struct nvkm_device *device = therm->subdev.device;
	struct nvkm_bios *bios = device->bios;
	struct nvkm_i2c *i2c = device->i2c;
	struct nvkm_i2c_bus *bus;
	struct nvbios_extdev_func extdev_entry;

	bus = nvkm_i2c_bus_find(i2c, NVKM_I2C_BUS_PRI);
	if (!bus)
		return;

	if (!nvbios_extdev_find(bios, NVBIOS_EXTDEV_LM89, &extdev_entry)) {
		struct nvkm_i2c_bus_probe board[] = {
		  { { I2C_BOARD_INFO("lm90", extdev_entry.addr >> 1) }, 0},
		  { }
		};

		nvkm_i2c_bus_probe(bus, "monitoring device", board,
				   probe_monitoring_device, therm);
		if (therm->ic)
			return;
	}

	if (!nvbios_extdev_find(bios, NVBIOS_EXTDEV_ADT7473, &extdev_entry)) {
		struct nvkm_i2c_bus_probe board[] = {
		  { { I2C_BOARD_INFO("adt7473", extdev_entry.addr >> 1) }, 20 },
		  { }
		};

		nvkm_i2c_bus_probe(bus, "monitoring device", board,
				   probe_monitoring_device, therm);
		if (therm->ic)
			return;
	}

	if (nvbios_extdev_skip_probe(bios))
		return;

	/* The vbios doesn't provide the address of an exisiting monitoring
	   device. Let's try our static list.
	 */
	nvkm_i2c_bus_probe(bus, "monitoring device", nv_board_infos,
			   probe_monitoring_device, therm);
}

Annotation

Implementation Notes