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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_sn5s330_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/ppc/sn5s330.h"
#include "driver/ppc/sn5s330_public.h"
#include "emul/emul_common_i2c.h"
#include "emul/emul_sn5s330.h"
#include "i2c.h"
#include <logging/log.h>
LOG_MODULE_REGISTER(sn5s330_emul, CONFIG_SN5S330_EMUL_LOG_LEVEL);
#define SN5S330_DATA_FROM_I2C_EMUL(_emul) \
CONTAINER_OF(CONTAINER_OF(_emul, struct i2c_common_emul_data, emul), \
struct sn5s330_emul_data, common)
struct sn5s330_emul_data {
/** Common I2C data */
struct i2c_common_emul_data common;
/** Emulated FUNC_SET1 register */
uint8_t func_set1_reg;
};
struct sn5s330_emul_cfg {
/** Common I2C config */
const struct i2c_common_emul_cfg common;
};
struct i2c_emul *sn5s330_emul_to_i2c_emul(const struct emul *emul)
{
struct sn5s330_emul_data *data = emul->data;
return &(data->common.emul);
}
int sn5s330_emul_peek_reg(const struct emul *emul, uint32_t reg, uint32_t *val)
{
struct sn5s330_emul_data *data = SN5S330_DATA_FROM_I2C_EMUL(emul);
switch (reg) {
case SN5S330_FUNC_SET1:
*val = data->func_set1_reg;
break;
default:
return -EINVAL;
}
return 0;
}
static int sn5s330_emul_read_byte(struct i2c_emul *emul, int reg, uint8_t *val,
int bytes)
{
struct sn5s330_emul_data *data = SN5S330_DATA_FROM_I2C_EMUL(emul);
switch (reg) {
case SN5S330_FUNC_SET1:
__ASSERT_NO_MSG(bytes == 0);
*val = data->func_set1_reg;
break;
default:
return -EINVAL;
}
return 0;
}
static int sn5s330_emul_write_byte(struct i2c_emul *emul, int reg, uint8_t val,
int bytes)
{
struct sn5s330_emul_data *data = SN5S330_DATA_FROM_I2C_EMUL(emul);
switch (reg) {
case SN5S330_FUNC_SET1:
__ASSERT_NO_MSG(bytes == 1);
data->func_set1_reg = val;
break;
default:
return -EINVAL;
}
return 0;
}
static int emul_sn5s330_init(const struct emul *emul,
const struct device *parent)
{
const struct sn5s330_emul_cfg *cfg = emul->cfg;
struct sn5s330_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_SN5S330(n) \
static struct sn5s330_emul_data sn5s330_emul_data_##n = { \
.common = { \
.write_byte = sn5s330_emul_write_byte, \
.read_byte = sn5s330_emul_read_byte, \
}, \
}; \
static struct sn5s330_emul_cfg sn5s330_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_sn5s330_init, DT_DRV_INST(n), &sn5s330_emul_cfg_##n, \
&sn5s330_emul_data_##n)
DT_INST_FOREACH_STATUS_OKAY(INIT_SN5S330)
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