4  * SPDX-License-Identifier: Apache-2.0
37 static int emul_max17048_reg_write(const struct emul *target, int reg, int val)  in emul_max17048_reg_write()  argument
40 	return -EIO;  in emul_max17048_reg_write()
43 static int emul_max17048_reg_read(const struct emul *target, int reg, int *val)  in emul_max17048_reg_read()  argument
46 	switch (reg) {  in emul_max17048_reg_read()
60 		LOG_ERR("Unknown register 0x%x read", reg);  in emul_max17048_reg_read()
61 		return -EIO;  in emul_max17048_reg_read()
63 	LOG_INF("read 0x%x = 0x%x", reg, *val);  in emul_max17048_reg_read()
73 	int reg;  in max17048_emul_transfer_i2c()  local
74 	int rc;  in max17048_emul_transfer_i2c()  local
78 	i2c_dump_msgs_rw(target->dev, msgs, num_msgs, addr, false);  in max17048_emul_transfer_i2c()
81 		if (msgs->flags & I2C_MSG_READ) {  in max17048_emul_transfer_i2c()
83 			return -EIO;  in max17048_emul_transfer_i2c()
85 		if (msgs->len != 1) {  in max17048_emul_transfer_i2c()
86 			LOG_ERR("Unexpected msg0 length %d", msgs->len);  in max17048_emul_transfer_i2c()
87 			return -EIO;  in max17048_emul_transfer_i2c()
89 		reg = msgs->buf[0];  in max17048_emul_transfer_i2c()
93 		if (msgs->flags & I2C_MSG_READ) {  in max17048_emul_transfer_i2c()
94 			switch (msgs->len - 1) {  in max17048_emul_transfer_i2c()
96 				rc = emul_max17048_reg_read(target, reg, &val);  in max17048_emul_transfer_i2c()
97 				if (rc) {  in max17048_emul_transfer_i2c()
99 					return rc;  in max17048_emul_transfer_i2c()
102 				/* SBS uses SMBus, which sends data in little-endian format. */  in max17048_emul_transfer_i2c()
103 				sys_put_le16(val, msgs->buf);  in max17048_emul_transfer_i2c()
106 				LOG_ERR("Unexpected msg1 length %d", msgs->len);  in max17048_emul_transfer_i2c()
107 				return -EIO;  in max17048_emul_transfer_i2c()
111 			if (msgs->len != 2) {  in max17048_emul_transfer_i2c()
112 				LOG_ERR("Unexpected msg1 length %d", msgs->len);  in max17048_emul_transfer_i2c()
114 			uint16_t value = sys_get_le16(msgs->buf);  in max17048_emul_transfer_i2c()
116 			rc = emul_max17048_reg_write(target, reg, value);  in max17048_emul_transfer_i2c()
121 		return -EIO;  in max17048_emul_transfer_i2c()
124 	return rc;  in max17048_emul_transfer_i2c()