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      1 /*	$NetBSD: nouveau_nvkm_subdev_therm_ic.c,v 1.3 2021/12/18 23:45:41 riastradh Exp $	*/
      2 
      3 /*
      4  * Copyright 2012 Nouveau community
      5  *
      6  * Permission is hereby granted, free of charge, to any person obtaining a
      7  * copy of this software and associated documentation files (the "Software"),
      8  * to deal in the Software without restriction, including without limitation
      9  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
     10  * and/or sell copies of the Software, and to permit persons to whom the
     11  * Software is furnished to do so, subject to the following conditions:
     12  *
     13  * The above copyright notice and this permission notice shall be included in
     14  * all copies or substantial portions of the Software.
     15  *
     16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
     17  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
     18  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
     19  * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
     20  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
     21  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
     22  * OTHER DEALINGS IN THE SOFTWARE.
     23  *
     24  * Authors: Martin Peres
     25  */
     26 #include <sys/cdefs.h>
     27 __KERNEL_RCSID(0, "$NetBSD: nouveau_nvkm_subdev_therm_ic.c,v 1.3 2021/12/18 23:45:41 riastradh Exp $");
     28 
     29 #include "priv.h"
     30 
     31 #include <subdev/bios/extdev.h>
     32 #include <subdev/i2c.h>
     33 
     34 static bool
     35 probe_monitoring_device(struct nvkm_i2c_bus *bus,
     36 			struct i2c_board_info *info, void *data)
     37 {
     38 #ifdef __NetBSD__
     39 	return false;
     40 #else
     41 	struct nvkm_therm *therm = data;
     42 	struct nvbios_therm_sensor *sensor = &therm->bios_sensor;
     43 	struct i2c_client *client;
     44 
     45 	request_module("%s%s", I2C_MODULE_PREFIX, info->type);
     46 
     47 	client = i2c_new_device(&bus->i2c, info);
     48 	if (!client)
     49 		return false;
     50 
     51 	if (!client->dev.driver ||
     52 	    to_i2c_driver(client->dev.driver)->detect(client, info)) {
     53 		i2c_unregister_device(client);
     54 		return false;
     55 	}
     56 
     57 	nvkm_debug(&therm->subdev,
     58 		   "Found an %s at address 0x%x (controlled by lm_sensors, "
     59 		   "temp offset %+i C)\n",
     60 		   info->type, info->addr, sensor->offset_constant);
     61 	therm->ic = client;
     62 	return true;
     63 #endif
     64 }
     65 
     66 static struct nvkm_i2c_bus_probe
     67 nv_board_infos[] = {
     68 	{ { I2C_BOARD_INFO("w83l785ts", 0x2d) }, 0 },
     69 	{ { I2C_BOARD_INFO("w83781d", 0x2d) }, 0  },
     70 	{ { I2C_BOARD_INFO("adt7473", 0x2e) }, 40  },
     71 	{ { I2C_BOARD_INFO("adt7473", 0x2d) }, 40  },
     72 	{ { I2C_BOARD_INFO("adt7473", 0x2c) }, 40  },
     73 	{ { I2C_BOARD_INFO("f75375", 0x2e) }, 0  },
     74 	{ { I2C_BOARD_INFO("lm99", 0x4c) }, 0  },
     75 	{ { I2C_BOARD_INFO("lm90", 0x4c) }, 0  },
     76 	{ { I2C_BOARD_INFO("lm90", 0x4d) }, 0  },
     77 	{ { I2C_BOARD_INFO("adm1021", 0x18) }, 0  },
     78 	{ { I2C_BOARD_INFO("adm1021", 0x19) }, 0  },
     79 	{ { I2C_BOARD_INFO("adm1021", 0x1a) }, 0  },
     80 	{ { I2C_BOARD_INFO("adm1021", 0x29) }, 0  },
     81 	{ { I2C_BOARD_INFO("adm1021", 0x2a) }, 0  },
     82 	{ { I2C_BOARD_INFO("adm1021", 0x2b) }, 0  },
     83 	{ { I2C_BOARD_INFO("adm1021", 0x4c) }, 0  },
     84 	{ { I2C_BOARD_INFO("adm1021", 0x4d) }, 0  },
     85 	{ { I2C_BOARD_INFO("adm1021", 0x4e) }, 0  },
     86 	{ { I2C_BOARD_INFO("lm63", 0x18) }, 0  },
     87 	{ { I2C_BOARD_INFO("lm63", 0x4e) }, 0  },
     88 	{ }
     89 };
     90 
     91 void
     92 nvkm_therm_ic_ctor(struct nvkm_therm *therm)
     93 {
     94 	struct nvkm_device *device = therm->subdev.device;
     95 	struct nvkm_bios *bios = device->bios;
     96 	struct nvkm_i2c *i2c = device->i2c;
     97 	struct nvkm_i2c_bus *bus;
     98 	struct nvbios_extdev_func extdev_entry;
     99 
    100 	bus = nvkm_i2c_bus_find(i2c, NVKM_I2C_BUS_PRI);
    101 	if (!bus)
    102 		return;
    103 
    104 	if (!nvbios_extdev_find(bios, NVBIOS_EXTDEV_LM89, &extdev_entry)) {
    105 		struct nvkm_i2c_bus_probe board[] = {
    106 		  { { I2C_BOARD_INFO("lm90", extdev_entry.addr >> 1) }, 0},
    107 		  { }
    108 		};
    109 
    110 		nvkm_i2c_bus_probe(bus, "monitoring device", board,
    111 				   probe_monitoring_device, therm);
    112 		if (therm->ic)
    113 			return;
    114 	}
    115 
    116 	if (!nvbios_extdev_find(bios, NVBIOS_EXTDEV_ADT7473, &extdev_entry)) {
    117 		struct nvkm_i2c_bus_probe board[] = {
    118 		  { { I2C_BOARD_INFO("adt7473", extdev_entry.addr >> 1) }, 20 },
    119 		  { }
    120 		};
    121 
    122 		nvkm_i2c_bus_probe(bus, "monitoring device", board,
    123 				   probe_monitoring_device, therm);
    124 		if (therm->ic)
    125 			return;
    126 	}
    127 
    128 	if (nvbios_extdev_skip_probe(bios))
    129 		return;
    130 
    131 	/* The vbios doesn't provide the address of an exisiting monitoring
    132 	   device. Let's try our static list.
    133 	 */
    134 	nvkm_i2c_bus_probe(bus, "monitoring device", nv_board_infos,
    135 			   probe_monitoring_device, therm);
    136 }
    137