mirror of https://gitee.com/openkylin/linux.git
drm/nouveau/therm: use the EXTDEV table to detect i2c monitoring devices
This commit also adds a static list of all known devices and their possible i2c addresses. v2: use the common table parsing technique as suggested by darktama Signed-off-by: Martin Peres <martin.peres@labri.fr> Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
This commit is contained in:
Martin Peres
Ben Skeggs
parent
7d70e9c1c6
commit
32334cc03a
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@ -30,6 +30,7 @@ nouveau-y += core/subdev/bios/bit.o
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nouveau-y += core/subdev/bios/conn.o
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nouveau-y += core/subdev/bios/dcb.o
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nouveau-y += core/subdev/bios/dp.o
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nouveau-y += core/subdev/bios/extdev.o
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nouveau-y += core/subdev/bios/gpio.o
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nouveau-y += core/subdev/bios/i2c.o
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nouveau-y += core/subdev/bios/init.o
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@ -0,0 +1,30 @@
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#ifndef __NVBIOS_EXTDEV_H__
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#define __NVBIOS_EXTDEV_H__
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struct nouveau_bios;
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enum nvbios_extdev_type {
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NVBIOS_EXTDEV_LM89 = 0x02,
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NVBIOS_EXTDEV_VT1103M = 0x40,
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NVBIOS_EXTDEV_PX3540 = 0x41,
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NVBIOS_EXTDEV_VT1105M = 0x42, /* or close enough... */
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NVBIOS_EXTDEV_ADT7473 = 0x70, /* can also be a LM64 */
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NVBIOS_EXTDEV_HDCP_EEPROM = 0x90,
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NVBIOS_EXTDEV_NONE = 0xff,
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};
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struct nvbios_extdev_func {
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u8 type;
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u8 addr;
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u8 bus;
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};
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int
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nvbios_extdev_parse(struct nouveau_bios *, int, struct nvbios_extdev_func *);
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int
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nvbios_extdev_find(struct nouveau_bios *, enum nvbios_extdev_type,
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struct nvbios_extdev_func *);
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#endif
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@ -0,0 +1,100 @@
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/*
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* Copyright 2012 Nouveau Community
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
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* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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* OTHER DEALINGS IN THE SOFTWARE.
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*
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* Authors: Martin Peres
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*/
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#include <subdev/bios.h>
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#include <subdev/bios/dcb.h>
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#include <subdev/bios/extdev.h>
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static u16
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extdev_table(struct nouveau_bios *bios, u8 *ver, u8 *hdr, u8 *len, u8 *cnt)
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{
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u8 dcb_ver, dcb_hdr, dcb_cnt, dcb_len;
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u16 dcb, extdev = 0;
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dcb = dcb_table(bios, &dcb_ver, &dcb_hdr, &dcb_cnt, &dcb_len);
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if (!dcb || (dcb_ver != 0x30 && dcb_ver != 0x40))
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return 0x0000;
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extdev = nv_ro16(bios, dcb + 18);
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if (!extdev)
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return 0x0000;
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*ver = nv_ro08(bios, extdev + 0);
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*hdr = nv_ro08(bios, extdev + 1);
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*cnt = nv_ro08(bios, extdev + 2);
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*len = nv_ro08(bios, extdev + 3);
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return extdev + *hdr;
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}
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u16
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nvbios_extdev_entry(struct nouveau_bios *bios, int idx, u8 *ver, u8 *len)
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{
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u8 hdr, cnt;
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u16 extdev = extdev_table(bios, ver, &hdr, len, &cnt);
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if (extdev && idx < cnt)
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return extdev + idx * *len;
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return 0x0000;
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}
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static void
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extdev_parse_entry(struct nouveau_bios *bios, u16 offset,
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struct nvbios_extdev_func *entry)
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{
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entry->type = nv_ro08(bios, offset + 0);
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entry->addr = nv_ro08(bios, offset + 1);
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entry->bus = (nv_ro08(bios, offset + 2) >> 4) & 1;
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}
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int
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nvbios_extdev_parse(struct nouveau_bios *bios, int idx,
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struct nvbios_extdev_func *func)
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{
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u8 ver, len;
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u16 entry;
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if (!(entry = nvbios_extdev_entry(bios, idx, &ver, &len)))
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return -EINVAL;
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extdev_parse_entry(bios, entry, func);
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return 0;
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}
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int
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nvbios_extdev_find(struct nouveau_bios *bios, enum nvbios_extdev_type type,
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struct nvbios_extdev_func *func)
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{
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u8 ver, len, i;
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u16 entry;
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i = 0;
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while (!(entry = nvbios_extdev_entry(bios, i++, &ver, &len))) {
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extdev_parse_entry(bios, entry, func);
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if (func->type == type)
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return 0;
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}
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return -EINVAL;
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}
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@ -31,6 +31,7 @@
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#include <subdev/i2c.h>
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#include <subdev/bios/therm.h>
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#include <subdev/bios/extdev.h>
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static int
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nv40_sensor_setup(struct drm_device *dev)
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@ -132,16 +133,58 @@ static void
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nouveau_temp_probe_i2c(struct drm_device *dev)
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{
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struct nouveau_device *device = nouveau_dev(dev);
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struct nouveau_bios *bios = nouveau_bios(device);
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struct nouveau_i2c *i2c = nouveau_i2c(device);
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struct nvbios_extdev_func extdev_entry;
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struct i2c_board_info info[] = {
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{ I2C_BOARD_INFO("w83l785ts", 0x2d) },
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{ I2C_BOARD_INFO("w83781d", 0x2d) },
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{ I2C_BOARD_INFO("adt7473", 0x2e) },
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{ I2C_BOARD_INFO("adt7473", 0x2d) },
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{ I2C_BOARD_INFO("adt7473", 0x2c) },
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{ I2C_BOARD_INFO("f75375", 0x2e) },
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{ I2C_BOARD_INFO("lm99", 0x4c) },
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{ I2C_BOARD_INFO("lm90", 0x4c) },
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{ I2C_BOARD_INFO("lm90", 0x4d) },
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{ I2C_BOARD_INFO("adm1021", 0x18) },
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{ I2C_BOARD_INFO("adm1021", 0x19) },
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{ I2C_BOARD_INFO("adm1021", 0x1a) },
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{ I2C_BOARD_INFO("adm1021", 0x29) },
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{ I2C_BOARD_INFO("adm1021", 0x2a) },
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{ I2C_BOARD_INFO("adm1021", 0x2b) },
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{ I2C_BOARD_INFO("adm1021", 0x4c) },
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{ I2C_BOARD_INFO("adm1021", 0x4d) },
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{ I2C_BOARD_INFO("adm1021", 0x4e) },
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{ I2C_BOARD_INFO("lm63", 0x18) },
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{ I2C_BOARD_INFO("lm63", 0x4e) },
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{ }
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};
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if (!nvbios_extdev_find(bios, NVBIOS_EXTDEV_LM89, &extdev_entry)) {
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struct i2c_board_info board[] = {
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{ I2C_BOARD_INFO("lm90", extdev_entry.addr >> 1) },
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{ }
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};
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if (i2c->identify(i2c, NV_I2C_DEFAULT(0), "monitoring device",
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board, probe_monitoring_device))
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return;
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}
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if (!nvbios_extdev_find(bios, NVBIOS_EXTDEV_ADT7473, &extdev_entry)) {
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struct i2c_board_info board[] = {
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{ I2C_BOARD_INFO("adt7473", extdev_entry.addr >> 1) },
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{ }
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};
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if (i2c->identify(i2c, NV_I2C_DEFAULT(0), "monitoring device",
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board, probe_monitoring_device))
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return;
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}
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/* The vbios doesn't provide the address of an exisiting monitoring
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device. Let's try our static list.
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*/
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i2c->identify(i2c, NV_I2C_DEFAULT(0), "monitoring device", info,
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probe_monitoring_device);
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}
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