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/* $NetBSD: lm87.c,v 1.4 2013/11/04 15:06:26 jdc Exp $ */
/* $OpenBSD: lm87.c,v 1.20 2008/11/10 05:19:48 cnst Exp $ */
/*
* Copyright (c) 2005 Mark Kettenis
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: lm87.c,v 1.4 2013/11/04 15:06:26 jdc Exp $");
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/device.h>
#include <dev/sysmon/sysmonvar.h>
#include <dev/i2c/i2cvar.h>
/* LM87 registers */
#define LM87_2_5V 0x20
#define LM87_VCCP1 0x21
#define LM87_VCC 0x22
#define LM87_5V 0x23
#define LM87_12V 0x24
#define LM87_VCCP2 0x25
#define LM87_EXT_TEMP 0x26
#define LM87_INT_TEMP 0x27
#define LM87_FAN1 0x28
#define LM87_FAN2 0x29
#define LM87_COMPANY_ID 0x3e
#define LM87_REVISION 0x3f
#define LM87_CONFIG1 0x40
#define LM87_CONFIG1_START 0x01
#define LM87_CONFIG1_INTCLR 0x08
#define LM87_CHANNEL 0x16
#define LM87_CHANNEL_AIN1 0x01
#define LM87_CHANNEL_AIN2 0x02
#define LM87_FANDIV 0x47
struct lmenv_id {
u_int8_t id, family;
const char *name;
};
static const struct lmenv_id lmenv_ids[] = {
{ 0x01, 81, "LM81" },
{ 0x02, 87, "LM87" }, /* LM87 or LM87CIMT */
{ 0x23, 81, "ADM9240" },
{ 0xda, 81, "DSL780" },
{ 0x00, 0, NULL }
};
/* Sensors */
#define LMENV_2_5V 0
#define LMENV_VCCP1 1
#define LMENV_VCC 2
#define LMENV_5V 3
#define LMENV_12V 4
#define LMENV_VCCP2 5
#define LMENV_EXT_TEMP 6
#define LMENV_INT_TEMP 7
#define LMENV_FAN1 8
#define LMENV_FAN2 9
#define LMENV_NUM_SENSORS 10
struct lmenv_softc {
i2c_tag_t sc_tag;
i2c_addr_t sc_addr;
int sc_fan1_div, sc_fan2_div;
int sc_family;
struct sysmon_envsys *sc_sme;
envsys_data_t sc_sensor[LMENV_NUM_SENSORS];
};
int lmenv_match(device_t, cfdata_t, void *);
void lmenv_attach(device_t, device_t, void *);
void lmenv_refresh(struct sysmon_envsys *, envsys_data_t *);
CFATTACH_DECL_NEW(lmenv, sizeof(struct lmenv_softc),
lmenv_match, lmenv_attach, NULL, NULL);
static const char * lmenv_compats[] = {
"lm87",
"lm87cimt",
"adm9240",
"lm81",
"ds1780",
NULL
};
int
lmenv_match(device_t parent, cfdata_t match, void *aux)
{
struct i2c_attach_args *ia = aux;
u_int8_t cmd, val;
int error, i;
if (ia->ia_name == NULL) {
/*
* Indirect config - not much we can do!
* Check typical addresses and read the Company ID register
*/
if ((ia->ia_addr < 0x2c) || (ia->ia_addr > 0x2f))
return 0;
cmd = LM87_COMPANY_ID;
iic_acquire_bus(ia->ia_tag, 0);
error = iic_exec(ia->ia_tag, I2C_OP_READ_WITH_STOP, ia->ia_addr,
&cmd, 1, &val, 1, I2C_F_POLL);
iic_release_bus(ia->ia_tag, 0);
if (error)
return 0;
for (i = 0; lmenv_ids[i].id != 0; i++)
if (lmenv_ids[i].id == val)
return 1;
} else {
/*
* Direct config - match via the list of compatible
* hardware.
*/
if (iic_compat_match(ia, lmenv_compats))
return 1;
}
return 0;
}
void
lmenv_attach(device_t parent, device_t self, void *aux)
{
struct lmenv_softc *sc = device_private(self);
struct i2c_attach_args *ia = aux;
u_int8_t cmd, data, data2, channel;
int i;
sc->sc_tag = ia->ia_tag;
sc->sc_addr = ia->ia_addr;
iic_acquire_bus(sc->sc_tag, 0);
cmd = LM87_COMPANY_ID;
if (iic_exec(sc->sc_tag, I2C_OP_READ_WITH_STOP,
sc->sc_addr, &cmd, sizeof cmd, &data, sizeof data, 0)) {
iic_release_bus(sc->sc_tag, 0);
printf(": cannot read ID register\n");
return;
}
for (i = 0; lmenv_ids[i].id != 0; i++)
if (lmenv_ids[i].id == data)
break;
cmd = LM87_REVISION;
if (iic_exec(sc->sc_tag, I2C_OP_READ_WITH_STOP,
sc->sc_addr, &cmd, sizeof cmd, &data2, sizeof data, 0)) {
iic_release_bus(sc->sc_tag, 0);
printf(": cannot read revision register\n");
return;
}
printf(": %s rev %x\n", lmenv_ids[i].name, data2);
sc->sc_family = lmenv_ids[i].family;
cmd = LM87_FANDIV;
if (iic_exec(sc->sc_tag, I2C_OP_READ_WITH_STOP,
sc->sc_addr, &cmd, sizeof cmd, &data, sizeof data, 0)) {
iic_release_bus(sc->sc_tag, 0);
printf(", cannot read Fan Divisor register\n");
return;
}
sc->sc_fan1_div = 1 << ((data >> 4) & 0x03);
sc->sc_fan2_div = 1 << ((data >> 6) & 0x03);
if (sc->sc_family == 87) {
cmd = LM87_CHANNEL;
if (iic_exec(sc->sc_tag, I2C_OP_READ_WITH_STOP,
sc->sc_addr, &cmd, sizeof cmd, &channel,
sizeof channel, 0)) {
iic_release_bus(sc->sc_tag, 0);
printf(", cannot read Channel register\n");
return;
}
} else
channel = 0;
cmd = LM87_CONFIG1;
if (iic_exec(sc->sc_tag, I2C_OP_READ_WITH_STOP,
sc->sc_addr, &cmd, sizeof cmd, &data, sizeof data, 0)) {
iic_release_bus(sc->sc_tag, 0);
printf(", cannot read Configuration Register 1\n");
return;
}
/*
* if chip is not running, try to start it.
* if it is stalled doing an interrupt, unstall it
*/
data2 = (data | LM87_CONFIG1_START);
data2 = data2 & ~LM87_CONFIG1_INTCLR;
if (data != data2) {
if (iic_exec(sc->sc_tag, I2C_OP_WRITE_WITH_STOP,
sc->sc_addr, &cmd, sizeof cmd, &data2, sizeof data2, 0)) {
iic_release_bus(sc->sc_tag, 0);
printf(", cannot write Configuration Register 1\n");
return;
}
}
iic_release_bus(sc->sc_tag, 0);
/* Initialize sensor data. */
sc->sc_sensor[LMENV_2_5V].state = ENVSYS_SINVALID;
sc->sc_sensor[LMENV_2_5V].units = ENVSYS_SVOLTS_DC;
strlcpy(sc->sc_sensor[LMENV_2_5V].desc, "+2.5Vin",
sizeof(sc->sc_sensor[LMENV_2_5V].desc));
sc->sc_sensor[LMENV_VCCP1].state = ENVSYS_SINVALID;
sc->sc_sensor[LMENV_VCCP1].units = ENVSYS_SVOLTS_DC;
strlcpy(sc->sc_sensor[LMENV_VCCP1].desc, "Vccp1",
sizeof(sc->sc_sensor[LMENV_VCCP1].desc));
sc->sc_sensor[LMENV_VCC].state = ENVSYS_SINVALID;
sc->sc_sensor[LMENV_VCC].units = ENVSYS_SVOLTS_DC;
strlcpy(sc->sc_sensor[LMENV_VCC].desc, "+Vcc",
sizeof(sc->sc_sensor[LMENV_VCC].desc));
sc->sc_sensor[LMENV_5V].state = ENVSYS_SINVALID;
sc->sc_sensor[LMENV_5V].units = ENVSYS_SVOLTS_DC;
strlcpy(sc->sc_sensor[LMENV_5V].desc, "+5Vin/Vcc",
sizeof(sc->sc_sensor[LMENV_5V].desc));
sc->sc_sensor[LMENV_12V].state = ENVSYS_SINVALID;
sc->sc_sensor[LMENV_12V].units = ENVSYS_SVOLTS_DC;
strlcpy(sc->sc_sensor[LMENV_12V].desc, "+12Vin",
sizeof(sc->sc_sensor[LMENV_12V].desc));
sc->sc_sensor[LMENV_VCCP2].state = ENVSYS_SINVALID;
sc->sc_sensor[LMENV_VCCP2].units = ENVSYS_SVOLTS_DC;
strlcpy(sc->sc_sensor[LMENV_VCCP2].desc, "Vccp2",
sizeof(sc->sc_sensor[LMENV_VCCP2].desc));
sc->sc_sensor[LMENV_EXT_TEMP].state = ENVSYS_SINVALID;
sc->sc_sensor[LMENV_EXT_TEMP].units = ENVSYS_STEMP;
strlcpy(sc->sc_sensor[LMENV_EXT_TEMP].desc, "External",
sizeof(sc->sc_sensor[LMENV_EXT_TEMP].desc));
if (sc->sc_family == 81)
sc->sc_sensor[LMENV_EXT_TEMP].state = ENVSYS_SINVALID;
sc->sc_sensor[LMENV_INT_TEMP].state = ENVSYS_SINVALID;
sc->sc_sensor[LMENV_INT_TEMP].units = ENVSYS_STEMP;
strlcpy(sc->sc_sensor[LMENV_INT_TEMP].desc, "Internal",
sizeof(sc->sc_sensor[LMENV_INT_TEMP].desc));
sc->sc_sensor[LMENV_FAN1].state = ENVSYS_SINVALID;
if (channel & LM87_CHANNEL_AIN1) {
sc->sc_sensor[LMENV_FAN1].units = ENVSYS_SVOLTS_DC;
strlcpy(sc->sc_sensor[LMENV_FAN1].desc, "AIN1",
sizeof(sc->sc_sensor[LMENV_FAN1].desc));
} else {
sc->sc_sensor[LMENV_FAN1].units = ENVSYS_SFANRPM;
strlcpy(sc->sc_sensor[LMENV_FAN1].desc, "FAN1",
sizeof(sc->sc_sensor[LMENV_FAN1].desc));
}
sc->sc_sensor[LMENV_FAN2].state = ENVSYS_SINVALID;
if (channel & LM87_CHANNEL_AIN2) {
sc->sc_sensor[LMENV_FAN2].units = ENVSYS_SVOLTS_DC;
strlcpy(sc->sc_sensor[LMENV_FAN2].desc, "AIN2",
sizeof(sc->sc_sensor[LMENV_FAN2].desc));
} else {
sc->sc_sensor[LMENV_FAN2].units = ENVSYS_SFANRPM;
strlcpy(sc->sc_sensor[LMENV_FAN2].desc, "FAN2",
sizeof(sc->sc_sensor[LMENV_FAN2].desc));
}
sc->sc_sme = sysmon_envsys_create();
for (i = 0; i < LMENV_NUM_SENSORS; i++)
if (sysmon_envsys_sensor_attach(sc->sc_sme,
&sc->sc_sensor[i])) {
sysmon_envsys_destroy(sc->sc_sme);
aprint_error_dev(self,
"unable to attach sensor %d at sysmon\n", i);
return;
}
sc->sc_sme->sme_name = device_xname(self);
sc->sc_sme->sme_cookie = sc;
sc->sc_sme->sme_refresh = lmenv_refresh;
if (sysmon_envsys_register(sc->sc_sme)) {
aprint_error_dev(self,
"unable to register with sysmon\n");
sysmon_envsys_destroy(sc->sc_sme);
return;
}
}
void
lmenv_refresh(struct sysmon_envsys *sme, envsys_data_t *edata)
{
struct lmenv_softc *sc = sme->sme_cookie;
u_int8_t cmd, data;
u_int tmp;
iic_acquire_bus(sc->sc_tag, 0);
cmd = LM87_2_5V + edata->sensor;
if (iic_exec(sc->sc_tag, I2C_OP_READ_WITH_STOP,
sc->sc_addr, &cmd, sizeof cmd, &data, sizeof data, 0)) {
edata->state = ENVSYS_SINVALID;
return;
}
switch (edata->sensor) {
case LMENV_2_5V:
edata->value_cur = 2500000 * data / 192;
edata->state = ENVSYS_SVALID;
break;
case LMENV_5V:
edata->value_cur = 5000000 * data / 192;
edata->state = ENVSYS_SVALID;
break;
case LMENV_12V:
edata->value_cur = 12000000 * data / 192;
edata->state = ENVSYS_SVALID;
break;
case LMENV_VCCP1:
case LMENV_VCCP2:
edata->value_cur = 2700000 * data / 192;
edata->state = ENVSYS_SVALID;
break;
case LMENV_VCC:
edata->value_cur = 3300000 * data / 192;
edata->state = ENVSYS_SVALID;
break;
case LMENV_EXT_TEMP:
if (sc->sc_family == 81) {
edata->state = ENVSYS_SINVALID;
break; /* missing on LM81 */
}
/* FALLTHROUGH */
case LMENV_INT_TEMP:
if (data == 0x80)
edata->state = ENVSYS_SINVALID;
else {
edata->value_cur = (int8_t)data * 1000000 + 273150000;
edata->state = ENVSYS_SVALID;
}
break;
case LMENV_FAN1:
if (edata->units == ENVSYS_SVOLTS_DC) {
edata->value_cur = 1870000 * data / 192;
edata->state = ENVSYS_SVALID;
break;
}
if (data == 0xff) {
edata->state = ENVSYS_SINVALID;
break;
}
tmp = data * sc->sc_fan1_div;
if (tmp == 0)
edata->state = ENVSYS_SINVALID;
else {
edata->value_cur = 1350000 / tmp;
edata->state = ENVSYS_SVALID;
}
break;
case LMENV_FAN2:
if (edata->units == ENVSYS_SVOLTS_DC) {
edata->value_cur = 1870000 * data / 192;
edata->state = ENVSYS_SVALID;
break;
}
if (data == 0xff) {
edata->state = ENVSYS_SINVALID;
break;
}
tmp = data * sc->sc_fan2_div;
if (tmp == 0)
edata->state = ENVSYS_SINVALID;
else {
edata->value_cur = 1350000 / tmp;
edata->state = ENVSYS_SVALID;
}
break;
default:
edata->state = ENVSYS_SINVALID;
break;
}
iic_release_bus(sc->sc_tag, 0);
}
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