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hw/misc: add an EMC141{3,4} device model
Largely inspired by the TMP421 temperature sensor, here is a model for the EMC1413/EMC1414 temperature sensors. Specs can be found here : http://ww1.microchip.com/downloads/en/DeviceDoc/20005274A.pdf Signed-off-by: John Wang <wangzhiqiang.bj@bytedance.com> Reviewed-by: Cédric Le Goater <clg@kaod.org> Message-Id: <20201122105134.671-1-wangzhiqiang.bj@bytedance.com> Signed-off-by: Cédric Le Goater <clg@kaod.org>
This commit is contained in:
John Wang
Cédric Le Goater
parent
5e7b204dbf
commit
5e623f2bf1
@ -407,6 +407,7 @@ config ASPEED_SOC
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select SSI_M25P80
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select TMP105
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select TMP421
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select EMC141X
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select UNIMP
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select LED
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@ -13,6 +13,10 @@ config TMP421
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bool
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depends on I2C
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config EMC141X
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bool
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depends on I2C
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config ISA_DEBUG
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bool
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depends on ISA_BUS
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326
hw/misc/emc141x.c
Normal file
326
hw/misc/emc141x.c
Normal file
@ -0,0 +1,326 @@
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/*
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* SMSC EMC141X temperature sensor.
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*
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* Copyright (c) 2020 Bytedance Corporation
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* Written by John Wang <wangzhiqiang.bj@bytedance.com>
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 or
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* (at your option) version 3 of the License.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, see <http://www.gnu.org/licenses/>.
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*/
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#include "qemu/osdep.h"
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#include "hw/i2c/i2c.h"
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#include "migration/vmstate.h"
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#include "qapi/error.h"
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#include "qapi/visitor.h"
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#include "qemu/module.h"
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#include "qom/object.h"
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#include "hw/misc/emc141x_regs.h"
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#define SENSORS_COUNT_MAX 4
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struct EMC141XState {
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I2CSlave parent_obj;
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struct {
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uint8_t raw_temp_min;
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uint8_t raw_temp_current;
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uint8_t raw_temp_max;
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} sensor[SENSORS_COUNT_MAX];
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uint8_t len;
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uint8_t data;
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uint8_t pointer;
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};
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struct EMC141XClass {
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I2CSlaveClass parent_class;
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uint8_t model;
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unsigned sensors_count;
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};
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#define TYPE_EMC141X "emc141x"
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OBJECT_DECLARE_TYPE(EMC141XState, EMC141XClass, EMC141X)
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static void emc141x_get_temperature(Object *obj, Visitor *v, const char *name,
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void *opaque, Error **errp)
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{
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EMC141XState *s = EMC141X(obj);
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EMC141XClass *sc = EMC141X_GET_CLASS(s);
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int64_t value;
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unsigned tempid;
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if (sscanf(name, "temperature%u", &tempid) != 1) {
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error_setg(errp, "error reading %s: %s", name, g_strerror(errno));
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return;
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}
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if (tempid >= sc->sensors_count) {
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error_setg(errp, "error reading %s", name);
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return;
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}
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value = s->sensor[tempid].raw_temp_current * 1000;
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visit_type_int(v, name, &value, errp);
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}
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static void emc141x_set_temperature(Object *obj, Visitor *v, const char *name,
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void *opaque, Error **errp)
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{
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EMC141XState *s = EMC141X(obj);
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EMC141XClass *sc = EMC141X_GET_CLASS(s);
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int64_t temp;
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unsigned tempid;
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if (!visit_type_int(v, name, &temp, errp)) {
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return;
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}
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if (sscanf(name, "temperature%u", &tempid) != 1) {
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error_setg(errp, "error reading %s: %s", name, g_strerror(errno));
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return;
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}
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if (tempid >= sc->sensors_count) {
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error_setg(errp, "error reading %s", name);
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return;
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}
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s->sensor[tempid].raw_temp_current = temp / 1000;
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}
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static void emc141x_read(EMC141XState *s)
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{
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EMC141XClass *sc = EMC141X_GET_CLASS(s);
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switch (s->pointer) {
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case EMC141X_DEVICE_ID:
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s->data = sc->model;
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break;
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case EMC141X_MANUFACTURER_ID:
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s->data = MANUFACTURER_ID;
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break;
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case EMC141X_REVISION:
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s->data = REVISION;
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break;
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case EMC141X_TEMP_HIGH0:
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s->data = s->sensor[0].raw_temp_current;
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break;
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case EMC141X_TEMP_HIGH1:
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s->data = s->sensor[1].raw_temp_current;
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break;
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case EMC141X_TEMP_HIGH2:
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s->data = s->sensor[2].raw_temp_current;
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break;
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case EMC141X_TEMP_HIGH3:
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s->data = s->sensor[3].raw_temp_current;
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break;
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case EMC141X_TEMP_MAX_HIGH0:
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s->data = s->sensor[0].raw_temp_max;
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break;
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case EMC141X_TEMP_MAX_HIGH1:
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s->data = s->sensor[1].raw_temp_max;
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break;
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case EMC141X_TEMP_MAX_HIGH2:
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s->data = s->sensor[2].raw_temp_max;
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break;
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case EMC141X_TEMP_MAX_HIGH3:
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s->data = s->sensor[3].raw_temp_max;
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break;
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case EMC141X_TEMP_MIN_HIGH0:
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s->data = s->sensor[0].raw_temp_min;
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break;
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case EMC141X_TEMP_MIN_HIGH1:
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s->data = s->sensor[1].raw_temp_min;
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break;
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case EMC141X_TEMP_MIN_HIGH2:
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s->data = s->sensor[2].raw_temp_min;
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break;
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case EMC141X_TEMP_MIN_HIGH3:
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s->data = s->sensor[3].raw_temp_min;
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break;
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default:
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s->data = 0;
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}
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}
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static void emc141x_write(EMC141XState *s)
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{
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switch (s->pointer) {
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case EMC141X_TEMP_MAX_HIGH0:
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s->sensor[0].raw_temp_max = s->data;
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break;
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case EMC141X_TEMP_MAX_HIGH1:
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s->sensor[1].raw_temp_max = s->data;
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break;
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case EMC141X_TEMP_MAX_HIGH2:
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s->sensor[2].raw_temp_max = s->data;
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break;
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case EMC141X_TEMP_MAX_HIGH3:
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s->sensor[3].raw_temp_max = s->data;
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break;
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case EMC141X_TEMP_MIN_HIGH0:
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s->sensor[0].raw_temp_min = s->data;
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break;
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case EMC141X_TEMP_MIN_HIGH1:
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s->sensor[1].raw_temp_min = s->data;
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break;
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case EMC141X_TEMP_MIN_HIGH2:
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s->sensor[2].raw_temp_min = s->data;
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break;
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case EMC141X_TEMP_MIN_HIGH3:
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s->sensor[3].raw_temp_min = s->data;
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break;
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default:
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s->data = 0;
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}
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}
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static uint8_t emc141x_rx(I2CSlave *i2c)
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{
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EMC141XState *s = EMC141X(i2c);
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if (s->len == 0) {
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s->len++;
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return s->data;
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} else {
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return 0xff;
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}
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}
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static int emc141x_tx(I2CSlave *i2c, uint8_t data)
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{
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EMC141XState *s = EMC141X(i2c);
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if (s->len == 0) {
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/* first byte is the reg pointer */
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s->pointer = data;
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s->len++;
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} else if (s->len == 1) {
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s->data = data;
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emc141x_write(s);
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}
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return 0;
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}
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static int emc141x_event(I2CSlave *i2c, enum i2c_event event)
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{
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EMC141XState *s = EMC141X(i2c);
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if (event == I2C_START_RECV) {
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emc141x_read(s);
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}
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s->len = 0;
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return 0;
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}
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static const VMStateDescription vmstate_emc141x = {
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.name = "EMC141X",
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.version_id = 0,
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.minimum_version_id = 0,
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.fields = (VMStateField[]) {
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VMSTATE_UINT8(len, EMC141XState),
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VMSTATE_UINT8(data, EMC141XState),
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VMSTATE_UINT8(pointer, EMC141XState),
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VMSTATE_I2C_SLAVE(parent_obj, EMC141XState),
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VMSTATE_END_OF_LIST()
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}
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};
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static void emc141x_reset(DeviceState *dev)
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{
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EMC141XState *s = EMC141X(dev);
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int i;
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for (i = 0; i < SENSORS_COUNT_MAX; i++) {
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s->sensor[i].raw_temp_max = 0x55;
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}
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s->pointer = 0;
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s->len = 0;
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}
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static void emc141x_initfn(Object *obj)
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{
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object_property_add(obj, "temperature0", "int",
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emc141x_get_temperature,
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emc141x_set_temperature, NULL, NULL);
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object_property_add(obj, "temperature1", "int",
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emc141x_get_temperature,
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emc141x_set_temperature, NULL, NULL);
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object_property_add(obj, "temperature2", "int",
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emc141x_get_temperature,
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emc141x_set_temperature, NULL, NULL);
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object_property_add(obj, "temperature3", "int",
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emc141x_get_temperature,
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emc141x_set_temperature, NULL, NULL);
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}
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static void emc141x_class_init(ObjectClass *klass, void *data)
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{
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DeviceClass *dc = DEVICE_CLASS(klass);
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I2CSlaveClass *k = I2C_SLAVE_CLASS(klass);
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dc->reset = emc141x_reset;
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k->event = emc141x_event;
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k->recv = emc141x_rx;
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k->send = emc141x_tx;
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dc->vmsd = &vmstate_emc141x;
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}
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static void emc1413_class_init(ObjectClass *klass, void *data)
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{
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EMC141XClass *ec = EMC141X_CLASS(klass);
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emc141x_class_init(klass, data);
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ec->model = EMC1413_DEVICE_ID;
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ec->sensors_count = 3;
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}
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static void emc1414_class_init(ObjectClass *klass, void *data)
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{
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EMC141XClass *ec = EMC141X_CLASS(klass);
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emc141x_class_init(klass, data);
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ec->model = EMC1414_DEVICE_ID;
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ec->sensors_count = 4;
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}
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static const TypeInfo emc141x_info = {
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.name = TYPE_EMC141X,
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.parent = TYPE_I2C_SLAVE,
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.instance_size = sizeof(EMC141XState),
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.class_size = sizeof(EMC141XClass),
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.instance_init = emc141x_initfn,
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.abstract = true,
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};
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static const TypeInfo emc1413_info = {
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.name = "emc1413",
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.parent = TYPE_EMC141X,
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.class_init = emc1413_class_init,
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};
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static const TypeInfo emc1414_info = {
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.name = "emc1414",
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.parent = TYPE_EMC141X,
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.class_init = emc1414_class_init,
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};
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static void emc141x_register_types(void)
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{
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type_register_static(&emc141x_info);
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type_register_static(&emc1413_info);
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type_register_static(&emc1414_info);
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}
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type_init(emc141x_register_types)
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@ -9,6 +9,7 @@ softmmu_ss.add(when: 'CONFIG_PCI_TESTDEV', if_true: files('pci-testdev.c'))
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softmmu_ss.add(when: 'CONFIG_SGA', if_true: files('sga.c'))
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softmmu_ss.add(when: 'CONFIG_TMP105', if_true: files('tmp105.c'))
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softmmu_ss.add(when: 'CONFIG_TMP421', if_true: files('tmp421.c'))
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softmmu_ss.add(when: 'CONFIG_EMC141X', if_true: files('emc141x.c'))
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softmmu_ss.add(when: 'CONFIG_UNIMP', if_true: files('unimp.c'))
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softmmu_ss.add(when: 'CONFIG_EMPTY_SLOT', if_true: files('empty_slot.c'))
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softmmu_ss.add(when: 'CONFIG_LED', if_true: files('led.c'))
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37
include/hw/misc/emc141x_regs.h
Normal file
37
include/hw/misc/emc141x_regs.h
Normal file
@ -0,0 +1,37 @@
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/*
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* SMSC EMC141X temperature sensor.
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*
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* Browse the data sheet:
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*
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* http://ww1.microchip.com/downloads/en/DeviceDoc/20005274A.pdf
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*
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* This work is licensed under the terms of the GNU GPL, version 2 or
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* later. See the COPYING file in the top-level directory.
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*/
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#ifndef TMP105_REGS_H
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#define TMP105_REGS_H
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#define EMC1413_DEVICE_ID 0x21
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#define EMC1414_DEVICE_ID 0x25
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#define MANUFACTURER_ID 0x5d
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#define REVISION 0x04
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/* the EMC141X registers */
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#define EMC141X_TEMP_HIGH0 0x00
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#define EMC141X_TEMP_HIGH1 0x01
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#define EMC141X_TEMP_HIGH2 0x23
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#define EMC141X_TEMP_HIGH3 0x2a
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#define EMC141X_TEMP_MAX_HIGH0 0x05
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#define EMC141X_TEMP_MIN_HIGH0 0x06
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#define EMC141X_TEMP_MAX_HIGH1 0x07
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#define EMC141X_TEMP_MIN_HIGH1 0x08
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#define EMC141X_TEMP_MAX_HIGH2 0x15
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#define EMC141X_TEMP_MIN_HIGH2 0x16
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#define EMC141X_TEMP_MAX_HIGH3 0x2c
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#define EMC141X_TEMP_MIN_HIGH3 0x2d
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#define EMC141X_DEVICE_ID 0xfd
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#define EMC141X_MANUFACTURER_ID 0xfe
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#define EMC141X_REVISION 0xff
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#endif
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81
tests/qtest/emc141x-test.c
Normal file
81
tests/qtest/emc141x-test.c
Normal file
@ -0,0 +1,81 @@
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/*
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* QTest testcase for the EMC141X temperature sensor
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*
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* This work is licensed under the terms of the GNU GPL, version 2 or later.
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* See the COPYING file in the top-level directory.
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*/
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#include "qemu/osdep.h"
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#include "libqtest-single.h"
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#include "libqos/qgraph.h"
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#include "libqos/i2c.h"
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#include "qapi/qmp/qdict.h"
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#include "hw/misc/emc141x_regs.h"
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#define EMC1414_TEST_ID "emc1414-test"
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static int qmp_emc1414_get_temperature(const char *id)
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{
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QDict *response;
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int ret;
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response = qmp("{ 'execute': 'qom-get', 'arguments': { 'path': %s, "
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"'property': 'temperature0' } }", id);
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g_assert(qdict_haskey(response, "return"));
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ret = qdict_get_int(response, "return");
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qobject_unref(response);
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return ret;
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}
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static void qmp_emc1414_set_temperature(const char *id, int value)
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{
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QDict *response;
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response = qmp("{ 'execute': 'qom-set', 'arguments': { 'path': %s, "
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"'property': 'temperature0', 'value': %d } }", id, value);
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g_assert(qdict_haskey(response, "return"));
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qobject_unref(response);
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}
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static void send_and_receive(void *obj, void *data, QGuestAllocator *alloc)
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{
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uint16_t value;
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QI2CDevice *i2cdev = (QI2CDevice *)obj;
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value = qmp_emc1414_get_temperature(EMC1414_TEST_ID);
|
||||
g_assert_cmpuint(value, ==, 0);
|
||||
|
||||
value = i2c_get8(i2cdev, EMC141X_TEMP_HIGH0);
|
||||
g_assert_cmphex(value, ==, 0);
|
||||
|
||||
/* The default max value is 85C, 0x55=85 */
|
||||
value = i2c_get8(i2cdev, EMC141X_TEMP_MAX_HIGH0);
|
||||
g_assert_cmphex(value, ==, 0x55);
|
||||
|
||||
value = i2c_get8(i2cdev, EMC141X_TEMP_MIN_HIGH0);
|
||||
g_assert_cmphex(value, ==, 0);
|
||||
|
||||
/* 3000mc = 30C */
|
||||
qmp_emc1414_set_temperature(EMC1414_TEST_ID, 30000);
|
||||
value = qmp_emc1414_get_temperature(EMC1414_TEST_ID);
|
||||
g_assert_cmpuint(value, ==, 30000);
|
||||
|
||||
value = i2c_get8(i2cdev, EMC141X_TEMP_HIGH0);
|
||||
g_assert_cmphex(value, ==, 30);
|
||||
|
||||
}
|
||||
|
||||
static void emc1414_register_nodes(void)
|
||||
{
|
||||
QOSGraphEdgeOptions opts = {
|
||||
.extra_device_opts = "id=" EMC1414_TEST_ID ",address=0x70"
|
||||
};
|
||||
add_qi2c_address(&opts, &(QI2CAddress) { 0x70 });
|
||||
|
||||
qos_node_create_driver("emc1414", i2c_device_create);
|
||||
qos_node_consumes("emc1414", "i2c-bus", &opts);
|
||||
|
||||
qos_add_test("tx-rx", "emc1414", send_and_receive, NULL);
|
||||
}
|
||||
libqos_init(emc1414_register_nodes);
|
||||
@ -188,6 +188,7 @@ qos_test_ss.add(
|
||||
'sdhci-test.c',
|
||||
'spapr-phb-test.c',
|
||||
'tmp105-test.c',
|
||||
'emc141x-test.c',
|
||||
'usb-hcd-ohci-test.c',
|
||||
'virtio-test.c',
|
||||
'virtio-blk-test.c',
|
||||
|
||||
Loading…
Reference in New Issue
Block a user