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-rw-r--r--hw/sensor/Kconfig4
-rw-r--r--hw/sensor/dps310.c225
-rw-r--r--hw/sensor/meson.build1
3 files changed, 230 insertions, 0 deletions
diff --git a/hw/sensor/Kconfig b/hw/sensor/Kconfig
index a2b55a4fdb..9c8a049b06 100644
--- a/hw/sensor/Kconfig
+++ b/hw/sensor/Kconfig
@@ -6,6 +6,10 @@ config TMP421
bool
depends on I2C
+config DPS310
+ bool
+ depends on I2C
+
config EMC141X
bool
depends on I2C
diff --git a/hw/sensor/dps310.c b/hw/sensor/dps310.c
new file mode 100644
index 0000000000..d60a18ac41
--- /dev/null
+++ b/hw/sensor/dps310.c
@@ -0,0 +1,225 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Copyright 2017-2021 Joel Stanley <joel@jms.id.au>, IBM Corporation
+ *
+ * Infineon DPS310 temperature and humidity sensor
+ *
+ * https://www.infineon.com/cms/en/product/sensor/pressure-sensors/pressure-sensors-for-iot/dps310/
+ */
+
+#include "qemu/osdep.h"
+#include "qemu/log.h"
+#include "hw/hw.h"
+#include "hw/i2c/i2c.h"
+#include "qapi/error.h"
+#include "qapi/visitor.h"
+#include "migration/vmstate.h"
+
+#define NUM_REGISTERS 0x33
+
+typedef struct DPS310State {
+ /*< private >*/
+ I2CSlave i2c;
+
+ /*< public >*/
+ uint8_t regs[NUM_REGISTERS];
+
+ uint8_t len;
+ uint8_t pointer;
+
+} DPS310State;
+
+#define TYPE_DPS310 "dps310"
+#define DPS310(obj) OBJECT_CHECK(DPS310State, (obj), TYPE_DPS310)
+
+#define DPS310_PRS_B2 0x00
+#define DPS310_PRS_B1 0x01
+#define DPS310_PRS_B0 0x02
+#define DPS310_TMP_B2 0x03
+#define DPS310_TMP_B1 0x04
+#define DPS310_TMP_B0 0x05
+#define DPS310_PRS_CFG 0x06
+#define DPS310_TMP_CFG 0x07
+#define DPS310_TMP_RATE_BITS (0x70)
+#define DPS310_MEAS_CFG 0x08
+#define DPS310_MEAS_CTRL_BITS (0x07)
+#define DPS310_PRESSURE_EN BIT(0)
+#define DPS310_TEMP_EN BIT(1)
+#define DPS310_BACKGROUND BIT(2)
+#define DPS310_PRS_RDY BIT(4)
+#define DPS310_TMP_RDY BIT(5)
+#define DPS310_SENSOR_RDY BIT(6)
+#define DPS310_COEF_RDY BIT(7)
+#define DPS310_CFG_REG 0x09
+#define DPS310_RESET 0x0c
+#define DPS310_RESET_MAGIC (BIT(0) | BIT(3))
+#define DPS310_COEF_BASE 0x10
+#define DPS310_COEF_LAST 0x21
+#define DPS310_COEF_SRC 0x28
+
+static void dps310_reset(DeviceState *dev)
+{
+ DPS310State *s = DPS310(dev);
+
+ static const uint8_t regs_reset_state[sizeof(s->regs)] = {
+ 0xfe, 0x2f, 0xee, 0x02, 0x69, 0xa6, 0x00, 0x80, 0xc7, 0x00, 0x00, 0x00,
+ 0x00, 0x10, 0x00, 0x00, 0x0e, 0x1e, 0xdd, 0x13, 0xca, 0x5f, 0x21, 0x52,
+ 0xf9, 0xc6, 0x04, 0xd1, 0xdb, 0x47, 0x00, 0x5b, 0xfb, 0x3a, 0x00, 0x00,
+ 0x20, 0x49, 0x4e, 0xa5, 0x90, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+ 0x60, 0x15, 0x02
+ };
+
+ memcpy(s->regs, regs_reset_state, sizeof(s->regs));
+ s->pointer = 0;
+
+ /* TODO: assert these after some timeout ? */
+ s->regs[DPS310_MEAS_CFG] = DPS310_COEF_RDY | DPS310_SENSOR_RDY
+ | DPS310_TMP_RDY | DPS310_PRS_RDY;
+}
+
+static uint8_t dps310_read(DPS310State *s, uint8_t reg)
+{
+ if (reg >= sizeof(s->regs)) {
+ qemu_log_mask(LOG_GUEST_ERROR, "%s: register 0x%02x out of bounds\n",
+ __func__, s->pointer);
+ return 0xFF;
+ }
+
+ switch (reg) {
+ case DPS310_PRS_B2:
+ case DPS310_PRS_B1:
+ case DPS310_PRS_B0:
+ case DPS310_TMP_B2:
+ case DPS310_TMP_B1:
+ case DPS310_TMP_B0:
+ case DPS310_PRS_CFG:
+ case DPS310_TMP_CFG:
+ case DPS310_MEAS_CFG:
+ case DPS310_CFG_REG:
+ case DPS310_COEF_BASE...DPS310_COEF_LAST:
+ case DPS310_COEF_SRC:
+ case 0x32: /* Undocumented register to indicate workaround not required */
+ return s->regs[reg];
+ default:
+ qemu_log_mask(LOG_UNIMP, "%s: register 0x%02x unimplemented\n",
+ __func__, reg);
+ return 0xFF;
+ }
+}
+
+static void dps310_write(DPS310State *s, uint8_t reg, uint8_t data)
+{
+ if (reg >= sizeof(s->regs)) {
+ qemu_log_mask(LOG_GUEST_ERROR, "%s: register %d out of bounds\n",
+ __func__, s->pointer);
+ return;
+ }
+
+ switch (reg) {
+ case DPS310_RESET:
+ if (data == DPS310_RESET_MAGIC) {
+ device_cold_reset(DEVICE(s));
+ }
+ break;
+ case DPS310_PRS_CFG:
+ case DPS310_TMP_CFG:
+ case DPS310_MEAS_CFG:
+ case DPS310_CFG_REG:
+ s->regs[reg] = data;
+ break;
+ default:
+ qemu_log_mask(LOG_UNIMP, "%s: register 0x%02x unimplemented\n",
+ __func__, reg);
+ return;
+ }
+}
+
+static uint8_t dps310_rx(I2CSlave *i2c)
+{
+ DPS310State *s = DPS310(i2c);
+
+ if (s->len == 1) {
+ return dps310_read(s, s->pointer++);
+ } else {
+ return 0xFF;
+ }
+}
+
+static int dps310_tx(I2CSlave *i2c, uint8_t data)
+{
+ DPS310State *s = DPS310(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) {
+ dps310_write(s, s->pointer++, data);
+ }
+
+ return 0;
+}
+
+static int dps310_event(I2CSlave *i2c, enum i2c_event event)
+{
+ DPS310State *s = DPS310(i2c);
+
+ switch (event) {
+ case I2C_START_SEND:
+ s->pointer = 0xFF;
+ s->len = 0;
+ break;
+ case I2C_START_RECV:
+ if (s->len != 1) {
+ qemu_log_mask(LOG_GUEST_ERROR, "%s: invalid recv sequence\n",
+ __func__);
+ }
+ break;
+ default:
+ break;
+ }
+
+ return 0;
+}
+
+static const VMStateDescription vmstate_dps310 = {
+ .name = "DPS310",
+ .version_id = 0,
+ .minimum_version_id = 0,
+ .fields = (VMStateField[]) {
+ VMSTATE_UINT8(len, DPS310State),
+ VMSTATE_UINT8_ARRAY(regs, DPS310State, NUM_REGISTERS),
+ VMSTATE_UINT8(pointer, DPS310State),
+ VMSTATE_I2C_SLAVE(i2c, DPS310State),
+ VMSTATE_END_OF_LIST()
+ }
+};
+
+static void dps310_class_init(ObjectClass *klass, void *data)
+{
+ DeviceClass *dc = DEVICE_CLASS(klass);
+ I2CSlaveClass *k = I2C_SLAVE_CLASS(klass);
+
+ k->event = dps310_event;
+ k->recv = dps310_rx;
+ k->send = dps310_tx;
+ dc->reset = dps310_reset;
+ dc->vmsd = &vmstate_dps310;
+}
+
+static const TypeInfo dps310_info = {
+ .name = TYPE_DPS310,
+ .parent = TYPE_I2C_SLAVE,
+ .instance_size = sizeof(DPS310State),
+ .class_init = dps310_class_init,
+};
+
+static void dps310_register_types(void)
+{
+ type_register_static(&dps310_info);
+}
+
+type_init(dps310_register_types)
diff --git a/hw/sensor/meson.build b/hw/sensor/meson.build
index 034e3e0207..059c4ca935 100644
--- a/hw/sensor/meson.build
+++ b/hw/sensor/meson.build
@@ -1,5 +1,6 @@
softmmu_ss.add(when: 'CONFIG_TMP105', if_true: files('tmp105.c'))
softmmu_ss.add(when: 'CONFIG_TMP421', if_true: files('tmp421.c'))
+softmmu_ss.add(when: 'CONFIG_DPS310', if_true: files('dps310.c'))
softmmu_ss.add(when: 'CONFIG_EMC141X', if_true: files('emc141x.c'))
softmmu_ss.add(when: 'CONFIG_ADM1272', if_true: files('adm1272.c'))
softmmu_ss.add(when: 'CONFIG_MAX34451', if_true: files('max34451.c'))
generated by cgit v1.2.3 (git 2.26.2) at 2024-11-29 08:00:54 +0000