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-rw-r--r--hw/misc/tmp421.c391
1 files changed, 0 insertions, 391 deletions
diff --git a/hw/misc/tmp421.c b/hw/misc/tmp421.c
deleted file mode 100644
index a3db57dcb5..0000000000
--- a/hw/misc/tmp421.c
+++ /dev/null
@@ -1,391 +0,0 @@
-/*
- * Texas Instruments TMP421 temperature sensor.
- *
- * Copyright (c) 2016 IBM Corporation.
- *
- * Largely inspired by :
- *
- * Texas Instruments TMP105 temperature sensor.
- *
- * Copyright (C) 2008 Nokia Corporation
- * Written by Andrzej Zaborowski <andrew@openedhand.com>
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License as
- * published by the Free Software Foundation; either version 2 or
- * (at your option) version 3 of the License.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License along
- * with this program; if not, see <http://www.gnu.org/licenses/>.
- */
-
-#include "qemu/osdep.h"
-#include "hw/i2c/i2c.h"
-#include "migration/vmstate.h"
-#include "qapi/error.h"
-#include "qapi/visitor.h"
-#include "qemu/module.h"
-#include "qom/object.h"
-
-/* Manufacturer / Device ID's */
-#define TMP421_MANUFACTURER_ID 0x55
-#define TMP421_DEVICE_ID 0x21
-#define TMP422_DEVICE_ID 0x22
-#define TMP423_DEVICE_ID 0x23
-
-typedef struct DeviceInfo {
- int model;
- const char *name;
-} DeviceInfo;
-
-static const DeviceInfo devices[] = {
- { TMP421_DEVICE_ID, "tmp421" },
- { TMP422_DEVICE_ID, "tmp422" },
- { TMP423_DEVICE_ID, "tmp423" },
-};
-
-struct TMP421State {
- /*< private >*/
- I2CSlave i2c;
- /*< public >*/
-
- int16_t temperature[4];
-
- uint8_t status;
- uint8_t config[2];
- uint8_t rate;
-
- uint8_t len;
- uint8_t buf[2];
- uint8_t pointer;
-
-};
-
-struct TMP421Class {
- I2CSlaveClass parent_class;
- DeviceInfo *dev;
-};
-
-#define TYPE_TMP421 "tmp421-generic"
-OBJECT_DECLARE_TYPE(TMP421State, TMP421Class, TMP421)
-
-
-/* the TMP421 registers */
-#define TMP421_STATUS_REG 0x08
-#define TMP421_STATUS_BUSY (1 << 7)
-#define TMP421_CONFIG_REG_1 0x09
-#define TMP421_CONFIG_RANGE (1 << 2)
-#define TMP421_CONFIG_SHUTDOWN (1 << 6)
-#define TMP421_CONFIG_REG_2 0x0A
-#define TMP421_CONFIG_RC (1 << 2)
-#define TMP421_CONFIG_LEN (1 << 3)
-#define TMP421_CONFIG_REN (1 << 4)
-#define TMP421_CONFIG_REN2 (1 << 5)
-#define TMP421_CONFIG_REN3 (1 << 6)
-
-#define TMP421_CONVERSION_RATE_REG 0x0B
-#define TMP421_ONE_SHOT 0x0F
-
-#define TMP421_RESET 0xFC
-#define TMP421_MANUFACTURER_ID_REG 0xFE
-#define TMP421_DEVICE_ID_REG 0xFF
-
-#define TMP421_TEMP_MSB0 0x00
-#define TMP421_TEMP_MSB1 0x01
-#define TMP421_TEMP_MSB2 0x02
-#define TMP421_TEMP_MSB3 0x03
-#define TMP421_TEMP_LSB0 0x10
-#define TMP421_TEMP_LSB1 0x11
-#define TMP421_TEMP_LSB2 0x12
-#define TMP421_TEMP_LSB3 0x13
-
-static const int32_t mins[2] = { -40000, -55000 };
-static const int32_t maxs[2] = { 127000, 150000 };
-
-static void tmp421_get_temperature(Object *obj, Visitor *v, const char *name,
- void *opaque, Error **errp)
-{
- TMP421State *s = TMP421(obj);
- bool ext_range = (s->config[0] & TMP421_CONFIG_RANGE);
- int offset = ext_range * 64 * 256;
- int64_t value;
- int tempid;
-
- if (sscanf(name, "temperature%d", &tempid) != 1) {
- error_setg(errp, "error reading %s: %s", name, g_strerror(errno));
- return;
- }
-
- if (tempid >= 4 || tempid < 0) {
- error_setg(errp, "error reading %s", name);
- return;
- }
-
- value = ((s->temperature[tempid] - offset) * 1000 + 128) / 256;
-
- visit_type_int(v, name, &value, errp);
-}
-
-/* Units are 0.001 centigrades relative to 0 C. s->temperature is 8.8
- * fixed point, so units are 1/256 centigrades. A simple ratio will do.
- */
-static void tmp421_set_temperature(Object *obj, Visitor *v, const char *name,
- void *opaque, Error **errp)
-{
- TMP421State *s = TMP421(obj);
- int64_t temp;
- bool ext_range = (s->config[0] & TMP421_CONFIG_RANGE);
- int offset = ext_range * 64 * 256;
- int tempid;
-
- if (!visit_type_int(v, name, &temp, errp)) {
- return;
- }
-
- if (temp >= maxs[ext_range] || temp < mins[ext_range]) {
- error_setg(errp, "value %" PRId64 ".%03" PRIu64 " C is out of range",
- temp / 1000, temp % 1000);
- return;
- }
-
- if (sscanf(name, "temperature%d", &tempid) != 1) {
- error_setg(errp, "error reading %s: %s", name, g_strerror(errno));
- return;
- }
-
- if (tempid >= 4 || tempid < 0) {
- error_setg(errp, "error reading %s", name);
- return;
- }
-
- s->temperature[tempid] = (int16_t) ((temp * 256 - 128) / 1000) + offset;
-}
-
-static void tmp421_read(TMP421State *s)
-{
- TMP421Class *sc = TMP421_GET_CLASS(s);
-
- s->len = 0;
-
- switch (s->pointer) {
- case TMP421_MANUFACTURER_ID_REG:
- s->buf[s->len++] = TMP421_MANUFACTURER_ID;
- break;
- case TMP421_DEVICE_ID_REG:
- s->buf[s->len++] = sc->dev->model;
- break;
- case TMP421_CONFIG_REG_1:
- s->buf[s->len++] = s->config[0];
- break;
- case TMP421_CONFIG_REG_2:
- s->buf[s->len++] = s->config[1];
- break;
- case TMP421_CONVERSION_RATE_REG:
- s->buf[s->len++] = s->rate;
- break;
- case TMP421_STATUS_REG:
- s->buf[s->len++] = s->status;
- break;
-
- /* FIXME: check for channel enablement in config registers */
- case TMP421_TEMP_MSB0:
- s->buf[s->len++] = (((uint16_t) s->temperature[0]) >> 8);
- s->buf[s->len++] = (((uint16_t) s->temperature[0]) >> 0) & 0xf0;
- break;
- case TMP421_TEMP_MSB1:
- s->buf[s->len++] = (((uint16_t) s->temperature[1]) >> 8);
- s->buf[s->len++] = (((uint16_t) s->temperature[1]) >> 0) & 0xf0;
- break;
- case TMP421_TEMP_MSB2:
- s->buf[s->len++] = (((uint16_t) s->temperature[2]) >> 8);
- s->buf[s->len++] = (((uint16_t) s->temperature[2]) >> 0) & 0xf0;
- break;
- case TMP421_TEMP_MSB3:
- s->buf[s->len++] = (((uint16_t) s->temperature[3]) >> 8);
- s->buf[s->len++] = (((uint16_t) s->temperature[3]) >> 0) & 0xf0;
- break;
- case TMP421_TEMP_LSB0:
- s->buf[s->len++] = (((uint16_t) s->temperature[0]) >> 0) & 0xf0;
- break;
- case TMP421_TEMP_LSB1:
- s->buf[s->len++] = (((uint16_t) s->temperature[1]) >> 0) & 0xf0;
- break;
- case TMP421_TEMP_LSB2:
- s->buf[s->len++] = (((uint16_t) s->temperature[2]) >> 0) & 0xf0;
- break;
- case TMP421_TEMP_LSB3:
- s->buf[s->len++] = (((uint16_t) s->temperature[3]) >> 0) & 0xf0;
- break;
- }
-}
-
-static void tmp421_reset(I2CSlave *i2c);
-
-static void tmp421_write(TMP421State *s)
-{
- switch (s->pointer) {
- case TMP421_CONVERSION_RATE_REG:
- s->rate = s->buf[0];
- break;
- case TMP421_CONFIG_REG_1:
- s->config[0] = s->buf[0];
- break;
- case TMP421_CONFIG_REG_2:
- s->config[1] = s->buf[0];
- break;
- case TMP421_RESET:
- tmp421_reset(I2C_SLAVE(s));
- break;
- }
-}
-
-static uint8_t tmp421_rx(I2CSlave *i2c)
-{
- TMP421State *s = TMP421(i2c);
-
- if (s->len < 2) {
- return s->buf[s->len++];
- } else {
- return 0xff;
- }
-}
-
-static int tmp421_tx(I2CSlave *i2c, uint8_t data)
-{
- TMP421State *s = TMP421(i2c);
-
- if (s->len == 0) {
- /* first byte is the register pointer for a read or write
- * operation */
- s->pointer = data;
- s->len++;
- } else if (s->len == 1) {
- /* second byte is the data to write. The device only supports
- * one byte writes */
- s->buf[0] = data;
- tmp421_write(s);
- }
-
- return 0;
-}
-
-static int tmp421_event(I2CSlave *i2c, enum i2c_event event)
-{
- TMP421State *s = TMP421(i2c);
-
- if (event == I2C_START_RECV) {
- tmp421_read(s);
- }
-
- s->len = 0;
- return 0;
-}
-
-static const VMStateDescription vmstate_tmp421 = {
- .name = "TMP421",
- .version_id = 0,
- .minimum_version_id = 0,
- .fields = (VMStateField[]) {
- VMSTATE_UINT8(len, TMP421State),
- VMSTATE_UINT8_ARRAY(buf, TMP421State, 2),
- VMSTATE_UINT8(pointer, TMP421State),
- VMSTATE_UINT8_ARRAY(config, TMP421State, 2),
- VMSTATE_UINT8(status, TMP421State),
- VMSTATE_UINT8(rate, TMP421State),
- VMSTATE_INT16_ARRAY(temperature, TMP421State, 4),
- VMSTATE_I2C_SLAVE(i2c, TMP421State),
- VMSTATE_END_OF_LIST()
- }
-};
-
-static void tmp421_reset(I2CSlave *i2c)
-{
- TMP421State *s = TMP421(i2c);
- TMP421Class *sc = TMP421_GET_CLASS(s);
-
- memset(s->temperature, 0, sizeof(s->temperature));
- s->pointer = 0;
-
- s->config[0] = 0; /* TMP421_CONFIG_RANGE */
-
- /* resistance correction and channel enablement */
- switch (sc->dev->model) {
- case TMP421_DEVICE_ID:
- s->config[1] = 0x1c;
- break;
- case TMP422_DEVICE_ID:
- s->config[1] = 0x3c;
- break;
- case TMP423_DEVICE_ID:
- s->config[1] = 0x7c;
- break;
- }
-
- s->rate = 0x7; /* 8Hz */
- s->status = 0;
-}
-
-static void tmp421_realize(DeviceState *dev, Error **errp)
-{
- TMP421State *s = TMP421(dev);
-
- tmp421_reset(&s->i2c);
-}
-
-static void tmp421_class_init(ObjectClass *klass, void *data)
-{
- DeviceClass *dc = DEVICE_CLASS(klass);
- I2CSlaveClass *k = I2C_SLAVE_CLASS(klass);
- TMP421Class *sc = TMP421_CLASS(klass);
-
- dc->realize = tmp421_realize;
- k->event = tmp421_event;
- k->recv = tmp421_rx;
- k->send = tmp421_tx;
- dc->vmsd = &vmstate_tmp421;
- sc->dev = (DeviceInfo *) data;
-
- object_class_property_add(klass, "temperature0", "int",
- tmp421_get_temperature,
- tmp421_set_temperature, NULL, NULL);
- object_class_property_add(klass, "temperature1", "int",
- tmp421_get_temperature,
- tmp421_set_temperature, NULL, NULL);
- object_class_property_add(klass, "temperature2", "int",
- tmp421_get_temperature,
- tmp421_set_temperature, NULL, NULL);
- object_class_property_add(klass, "temperature3", "int",
- tmp421_get_temperature,
- tmp421_set_temperature, NULL, NULL);
-}
-
-static const TypeInfo tmp421_info = {
- .name = TYPE_TMP421,
- .parent = TYPE_I2C_SLAVE,
- .instance_size = sizeof(TMP421State),
- .class_size = sizeof(TMP421Class),
- .abstract = true,
-};
-
-static void tmp421_register_types(void)
-{
- int i;
-
- type_register_static(&tmp421_info);
- for (i = 0; i < ARRAY_SIZE(devices); ++i) {
- TypeInfo ti = {
- .name = devices[i].name,
- .parent = TYPE_TMP421,
- .class_init = tmp421_class_init,
- .class_data = (void *) &devices[i],
- };
- type_register(&ti);
- }
-}
-
-type_init(tmp421_register_types)
generated by cgit v1.2.3 (git 2.26.2) at 2024-12-23 13:50:50 +0000