4  * SPDX-License-Identifier: Apache-2.0
28 /** Run-time data used by the emulator */
33 static int emul_sbs_charger_reg_write(const struct emul *target, int reg, int val)  in emul_sbs_charger_reg_write()  argument
35 	struct sbs_charger_emul_data *data = target->data;  in emul_sbs_charger_reg_write()
37 	LOG_INF("write %x = %x", reg, val);  in emul_sbs_charger_reg_write()
38 	switch (reg) {  in emul_sbs_charger_reg_write()
40 		data->reg_charger_mode = val;  in emul_sbs_charger_reg_write()
43 		LOG_ERR("Unknown write %x", reg);  in emul_sbs_charger_reg_write()
44 		return -EIO;  in emul_sbs_charger_reg_write()
50 static int emul_sbs_charger_reg_read(const struct emul *target, int reg, int *val)  in emul_sbs_charger_reg_read()  argument
52 	switch (reg) {  in emul_sbs_charger_reg_read()
61 		LOG_ERR("Unknown register 0x%x read", reg);  in emul_sbs_charger_reg_read()
62 		return -EIO;  in emul_sbs_charger_reg_read()
64 	LOG_INF("read 0x%x = 0x%x", reg, *val);  in emul_sbs_charger_reg_read()
75 	int reg;  in sbs_charger_emul_transfer_i2c()  local
76 	int rc;  in sbs_charger_emul_transfer_i2c()  local
78 	data = target->data;  in sbs_charger_emul_transfer_i2c()
80 	i2c_dump_msgs_rw(target->dev, msgs, num_msgs, addr, false);  in sbs_charger_emul_transfer_i2c()
83 		if (msgs->flags & I2C_MSG_READ) {  in sbs_charger_emul_transfer_i2c()
85 			return -EIO;  in sbs_charger_emul_transfer_i2c()
87 		if (msgs->len != 1) {  in sbs_charger_emul_transfer_i2c()
88 			LOG_ERR("Unexpected msg0 length %d", msgs->len);  in sbs_charger_emul_transfer_i2c()
89 			return -EIO;  in sbs_charger_emul_transfer_i2c()
91 		reg = msgs->buf[0];  in sbs_charger_emul_transfer_i2c()
95 		if (msgs->flags & I2C_MSG_READ) {  in sbs_charger_emul_transfer_i2c()
96 			switch (msgs->len - 1) {  in sbs_charger_emul_transfer_i2c()
98 				rc = emul_sbs_charger_reg_read(target, reg, &val);  in sbs_charger_emul_transfer_i2c()
99 				if (rc) {  in sbs_charger_emul_transfer_i2c()
101 					return rc;  in sbs_charger_emul_transfer_i2c()
104 				/* SBS uses SMBus, which sends data in little-endian format. */  in sbs_charger_emul_transfer_i2c()
105 				sys_put_le16(val, msgs->buf);  in sbs_charger_emul_transfer_i2c()
108 				LOG_ERR("Unexpected msg1 length %d", msgs->len);  in sbs_charger_emul_transfer_i2c()
109 				return -EIO;  in sbs_charger_emul_transfer_i2c()
113 			if (msgs->len != 2) {  in sbs_charger_emul_transfer_i2c()
114 				LOG_ERR("Unexpected msg1 length %d", msgs->len);  in sbs_charger_emul_transfer_i2c()
116 			uint16_t value = sys_get_le16(msgs->buf);  in sbs_charger_emul_transfer_i2c()
118 			rc = emul_sbs_charger_reg_write(target, reg, value);  in sbs_charger_emul_transfer_i2c()
123 		return -EIO;  in sbs_charger_emul_transfer_i2c()
126 	return rc;  in sbs_charger_emul_transfer_i2c()