+ default:
+ ACPI_EXCEPTION((AE_INFO, AE_ERROR,
+ "unsupported transaction %d", size));
+ return (-1);
+ }
+
+ acpi_ec_sbs_write(sbs, ACPI_EC_SMB_ADDR, addr << 1);
+ acpi_ec_sbs_write(sbs, ACPI_EC_SMB_PRTCL, protocol);
+
+ acpi_ec_sbs_read(sbs, ACPI_EC_SMB_STS, temp);
+
+ if (~temp[0] & ACPI_EC_SMB_STS_DONE) {
+ xmsleep(ACPI_EC_SMB_ACCESS_SLEEP1);
+ acpi_ec_sbs_read(sbs, ACPI_EC_SMB_STS, temp);
+ }
+ if (~temp[0] & ACPI_EC_SMB_STS_DONE) {
+ xmsleep(ACPI_EC_SMB_ACCESS_SLEEP2);
+ acpi_ec_sbs_read(sbs, ACPI_EC_SMB_STS, temp);
+ }
+ if ((~temp[0] & ACPI_EC_SMB_STS_DONE)
+ || (temp[0] & ACPI_EC_SMB_STS_STATUS)) {
+ ACPI_EXCEPTION((AE_INFO, AE_ERROR,
+ "transaction %d error", size));
+ return (-1);
+ }
+
+ if (read_write == ACPI_SBS_SMBUS_WRITE) {
+ return (0);
+ }
+
+ switch (size) {
+
+ case ACPI_SBS_WORD_DATA:
+ acpi_ec_sbs_read(sbs, ACPI_EC_SMB_DATA, temp);
+ acpi_ec_sbs_read(sbs, ACPI_EC_SMB_DATA + 1, temp + 1);
+ data->word = (temp[1] << 8) | temp[0];