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/* Copyright 2021 The Chromium OS Authors. All rights reserved.
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#define DT_DRV_COMPAT cros_isl923x_emul
#include <device.h>
#include <drivers/i2c.h>
#include <drivers/i2c_emul.h>
#include <emul.h>
#include <errno.h>
#include <sys/__assert.h>
#include "driver/charger/isl923x.h"
#include "driver/charger/isl923x_public.h"
#include "emul/emul_common_i2c.h"
#include "emul/emul_isl923x.h"
#include "i2c.h"
#include <logging/log.h>
LOG_MODULE_REGISTER(isl923x_emul, CONFIG_ISL923X_EMUL_LOG_LEVEL);
#define ISL923X_DATA_FROM_I2C_EMUL(_emul) \
CONTAINER_OF(CONTAINER_OF(_emul, struct i2c_common_emul_data, emul), \
struct isl923x_emul_data, common)
/** Mask used for the charge current register */
#define REG_CHG_CURRENT_MASK GENMASK(12, 2)
/** Mask used for the system voltage max register */
#define REG_SYS_VOLTAGE_MAX_MASK GENMASK(14, 3)
/** Mask used for the adapter current limit 1 register */
#define REG_ADAPTER_CURRENT_LIMIT1_MASK GENMASK(12, 2)
/** Mask used for the adapter current limit 2 register */
#define REG_ADAPTER_CURRENT_LIMIT2_MASK GENMASK(12, 2)
/** Mask used for the control 0 register */
#define REG_CONTROL0_MASK GENMASK(15, 1)
/** Mask used for the control 1 register */
#define REG_CONTROL1_MASK (GENMASK(15, 8) | GENMASK(6, 0))
/** Mask used for the control 2 register */
#define REG_CONTROL2_MASK GENMASK(15, 0)
/** Mask used for the control 3 register */
#define REG_CONTROL3_MASK GENMASK(15, 0)
/** Mask used for the AC PROCHOT register */
#define REG_PROCHOT_AC_MASK GENMASK(12, 7)
/** Mask used for the DC PROCHOT register */
#define REG_PROCHOT_DC_MASK GENMASK(13, 8)
struct isl923x_emul_data {
/** Common I2C data */
struct i2c_common_emul_data common;
/** Emulated charge current limit register */
uint16_t current_limit_reg;
/** Emulated adapter current limit 1 register */
uint16_t adapter_current_limit1_reg;
/** Emulated adapter current limit 2 register */
uint16_t adapter_current_limit2_reg;
/** Emulated max voltage register */
uint16_t max_volt_reg;
/** Emulated manufacturer ID register */
uint16_t manufacturer_id_reg;
/** Emulated device ID register */
uint16_t device_id_reg;
/** Emulated control 0 register */
uint16_t control_0_reg;
/** Emulated control 1 register */
uint16_t control_1_reg;
/** Emulated control 2 register */
uint16_t control_2_reg;
/** Emulated control 3 register */
uint16_t control_3_reg;
/** Emulated AC PROCHOT register */
uint16_t ac_prochot_reg;
/** Emulated DC PROCHOT register */
uint16_t dc_prochot_reg;
/** Emulated ADC vbus register */
uint16_t adc_vbus_reg;
};
struct isl923x_emul_cfg {
/** Common I2C config */
const struct i2c_common_emul_cfg common;
};
const struct device *isl923x_emul_get_parent(const struct emul *emulator)
{
struct isl923x_emul_data *data = emulator->data;
return data->common.i2c;
}
struct i2c_emul *isl923x_emul_get_i2c_emul(const struct emul *emulator)
{
struct isl923x_emul_data *data = emulator->data;
return &(data->common.emul);
}
void isl923x_emul_reset(const struct emul *emulator)
{
struct isl923x_emul_data *data = emulator->data;
struct i2c_common_emul_data common_backup = data->common;
memset(data, 0, sizeof(struct isl923x_emul_data));
data->common = common_backup;
}
void isl923x_emul_set_manufacturer_id(const struct emul *emulator,
uint16_t manufacturer_id)
{
struct isl923x_emul_data *data = emulator->data;
data->manufacturer_id_reg = manufacturer_id;
}
void isl923x_emul_set_device_id(const struct emul *emulator,
uint16_t device_id)
{
struct isl923x_emul_data *data = emulator->data;
data->device_id_reg = device_id;
}
bool isl923x_emul_is_learn_mode_enabled(const struct emul *emulator)
{
struct isl923x_emul_data *data = emulator->data;
return (data->control_1_reg & ISL923X_C1_LEARN_MODE_ENABLE) != 0;
}
void isl923x_emul_set_learn_mode_enabled(const struct emul *emulator,
bool enabled)
{
struct isl923x_emul_data *data = emulator->data;
if (enabled)
data->control_1_reg |= ISL923X_C1_LEARN_MODE_ENABLE;
else
data->control_1_reg &= ~ISL923X_C1_LEARN_MODE_ENABLE;
}
void isl923x_emul_set_adc_vbus(const struct emul *emulator,
uint16_t value)
{
struct isl923x_emul_data *data = emulator->data;
/* The VBUS voltage is returned in bits 13:6. The LSB is 96mV. */
data->adc_vbus_reg = value & GENMASK(13, 6);
}
static int isl923x_emul_read_byte(struct i2c_emul *emul, int reg, uint8_t *val,
int bytes)
{
struct isl923x_emul_data *data = ISL923X_DATA_FROM_I2C_EMUL(emul);
switch (reg) {
case ISL923X_REG_CHG_CURRENT:
__ASSERT_NO_MSG(bytes == 0 || bytes == 1);
if (bytes == 0)
*val = (uint8_t)(data->current_limit_reg & 0xff);
else
*val = (uint8_t)((data->current_limit_reg >> 8) & 0xff);
break;
case ISL923X_REG_SYS_VOLTAGE_MAX:
__ASSERT_NO_MSG(bytes == 0 || bytes == 1);
if (bytes == 0)
*val = (uint8_t)(data->max_volt_reg & 0xff);
else
*val = (uint8_t)((data->max_volt_reg >> 8) & 0xff);
break;
case ISL923X_REG_ADAPTER_CURRENT_LIMIT1:
__ASSERT_NO_MSG(bytes == 0 || bytes == 1);
if (bytes == 0)
*val = (uint8_t)(data->adapter_current_limit1_reg &
0xff);
else
*val = (uint8_t)((data->adapter_current_limit1_reg >>
8) &
0xff);
break;
case ISL923X_REG_ADAPTER_CURRENT_LIMIT2:
__ASSERT_NO_MSG(bytes == 0 || bytes == 1);
if (bytes == 0)
*val = (uint8_t)(data->adapter_current_limit2_reg &
0xff);
else
*val = (uint8_t)((data->adapter_current_limit2_reg >>
8) &
0xff);
break;
case ISL923X_REG_MANUFACTURER_ID:
__ASSERT_NO_MSG(bytes == 0 || bytes == 1);
if (bytes == 0)
*val = (uint8_t)(data->manufacturer_id_reg & 0xff);
else
*val = (uint8_t)((data->manufacturer_id_reg >> 8) &
0xff);
break;
case ISL923X_REG_DEVICE_ID:
__ASSERT_NO_MSG(bytes == 0 || bytes == 1);
if (bytes == 0)
*val = (uint8_t)(data->device_id_reg & 0xff);
else
*val = (uint8_t)((data->device_id_reg >> 8) & 0xff);
break;
case ISL923X_REG_CONTROL0:
__ASSERT_NO_MSG(bytes == 0 || bytes == 1);
if (bytes == 0)
*val = (uint8_t)(data->control_0_reg & 0xff);
else
*val = (uint8_t)((data->control_0_reg >> 8) & 0xff);
break;
case ISL923X_REG_CONTROL1:
__ASSERT_NO_MSG(bytes == 0 || bytes == 1);
if (bytes == 0)
*val = (uint8_t)(data->control_1_reg & 0xff);
else
*val = (uint8_t)((data->control_1_reg >> 8) & 0xff);
break;
case ISL923X_REG_CONTROL2:
__ASSERT_NO_MSG(bytes == 0 || bytes == 1);
if (bytes == 0)
*val = (uint8_t)(data->control_2_reg & 0xff);
else
*val = (uint8_t)((data->control_2_reg >> 8) & 0xff);
break;
case ISL9238_REG_CONTROL3:
__ASSERT_NO_MSG(bytes == 0 || bytes == 1);
if (bytes == 0)
*val = (uint8_t)(data->control_3_reg & 0xff);
else
*val = (uint8_t)((data->control_3_reg >> 8) & 0xff);
break;
case ISL923X_REG_PROCHOT_AC:
__ASSERT_NO_MSG(bytes == 0 || bytes == 1);
if (bytes == 0)
*val = (uint8_t)(data->ac_prochot_reg & 0xff);
else
*val = (uint8_t)((data->ac_prochot_reg >> 8) & 0xff);
break;
case ISL923X_REG_PROCHOT_DC:
__ASSERT_NO_MSG(bytes == 0 || bytes == 1);
if (bytes == 0)
*val = (uint8_t)(data->dc_prochot_reg & 0xff);
else
*val = (uint8_t)((data->dc_prochot_reg >> 8) & 0xff);
break;
case RAA489000_REG_ADC_VBUS:
__ASSERT_NO_MSG(bytes == 0 || bytes == 1);
if (bytes == 0)
*val = (uint8_t)(data->adc_vbus_reg & 0xff);
else
*val = (uint8_t)((data->adc_vbus_reg >> 8) & 0xff);
break;
default:
return -EINVAL;
}
return 0;
}
static int isl923x_emul_write_byte(struct i2c_emul *emul, int reg, uint8_t val,
int bytes)
{
struct isl923x_emul_data *data = ISL923X_DATA_FROM_I2C_EMUL(emul);
switch (reg) {
case ISL923X_REG_CHG_CURRENT:
__ASSERT_NO_MSG(bytes == 1 || bytes == 2);
if (bytes == 1)
data->current_limit_reg = val & REG_CHG_CURRENT_MASK;
else
data->current_limit_reg |= (val << 8) &
REG_CHG_CURRENT_MASK;
break;
case ISL923X_REG_SYS_VOLTAGE_MAX:
__ASSERT_NO_MSG(bytes == 1 || bytes == 2);
if (bytes == 1)
data->max_volt_reg = val & REG_SYS_VOLTAGE_MAX_MASK;
else
data->max_volt_reg |= (val << 8) &
REG_SYS_VOLTAGE_MAX_MASK;
break;
case ISL923X_REG_ADAPTER_CURRENT_LIMIT1:
__ASSERT_NO_MSG(bytes == 1 || bytes == 2);
if (bytes == 1)
data->adapter_current_limit1_reg =
val & REG_ADAPTER_CURRENT_LIMIT1_MASK;
else
data->adapter_current_limit1_reg |=
(val << 8) & REG_ADAPTER_CURRENT_LIMIT1_MASK;
break;
case ISL923X_REG_ADAPTER_CURRENT_LIMIT2:
__ASSERT_NO_MSG(bytes == 1 || bytes == 2);
if (bytes == 1)
data->adapter_current_limit2_reg =
val & REG_ADAPTER_CURRENT_LIMIT2_MASK;
else
data->adapter_current_limit2_reg |=
(val << 8) & REG_ADAPTER_CURRENT_LIMIT2_MASK;
break;
case ISL923X_REG_CONTROL0:
__ASSERT_NO_MSG(bytes == 1 || bytes == 2);
if (bytes == 1)
data->control_0_reg = val & REG_CONTROL0_MASK;
else
data->control_0_reg |= (val << 8) & REG_CONTROL0_MASK;
break;
case ISL923X_REG_CONTROL1:
__ASSERT_NO_MSG(bytes == 1 || bytes == 2);
if (bytes == 1)
data->control_1_reg = val & REG_CONTROL1_MASK;
else
data->control_1_reg |= (val << 8) & REG_CONTROL1_MASK;
break;
case ISL923X_REG_CONTROL2:
__ASSERT_NO_MSG(bytes == 1 || bytes == 2);
if (bytes == 1)
data->control_2_reg = val & REG_CONTROL2_MASK;
else
data->control_2_reg |= (val << 8) & REG_CONTROL2_MASK;
break;
case ISL9238_REG_CONTROL3:
__ASSERT_NO_MSG(bytes == 1 || bytes == 2);
if (bytes == 1)
data->control_3_reg = val & REG_CONTROL3_MASK;
else
data->control_3_reg |= (val << 8) & REG_CONTROL3_MASK;
break;
case ISL923X_REG_PROCHOT_AC:
__ASSERT_NO_MSG(bytes == 1 || bytes == 2);
if (bytes == 1)
data->ac_prochot_reg = val & REG_PROCHOT_AC_MASK;
else
data->ac_prochot_reg |= (val << 8) &
REG_PROCHOT_AC_MASK;
break;
case ISL923X_REG_PROCHOT_DC:
__ASSERT_NO_MSG(bytes == 1 || bytes == 2);
if (bytes == 1)
data->dc_prochot_reg = val & REG_PROCHOT_DC_MASK;
else
data->dc_prochot_reg |= (val << 8) &
REG_PROCHOT_DC_MASK;
break;
default:
return -EINVAL;
}
return 0;
}
static int emul_isl923x_init(const struct emul *emul,
const struct device *parent)
{
const struct isl923x_emul_cfg *cfg = emul->cfg;
struct isl923x_emul_data *data = emul->data;
data->common.emul.api = &i2c_common_emul_api;
data->common.emul.addr = cfg->common.addr;
data->common.emul.parent = emul;
data->common.i2c = parent;
data->common.cfg = &cfg->common;
i2c_common_emul_init(&data->common);
return i2c_emul_register(parent, emul->dev_label, &data->common.emul);
}
#define INIT_ISL923X(n) \
static struct isl923x_emul_data isl923x_emul_data_##n = { \
.common = { \
.write_byte = isl923x_emul_write_byte, \
.read_byte = isl923x_emul_read_byte, \
}, \
}; \
static struct isl923x_emul_cfg isl923x_emul_cfg_##n = { \
.common = { \
.i2c_label = DT_INST_BUS_LABEL(n), \
.dev_label = DT_INST_LABEL(n), \
.addr = DT_INST_REG_ADDR(n), \
}, \
}; \
EMUL_DEFINE(emul_isl923x_init, DT_DRV_INST(n), &isl923x_emul_cfg_##n, \
&isl923x_emul_data_##n)
DT_INST_FOREACH_STATUS_OKAY(INIT_ISL923X)
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