diff options
Diffstat (limited to 'src/superio/common/generic.c')
| -rw-r--r-- | src/superio/common/generic.c | 140 |
1 files changed, 140 insertions, 0 deletions
diff --git a/src/superio/common/generic.c b/src/superio/common/generic.c index 7ac1f8374e7c..85b70df1b53d 100644 --- a/src/superio/common/generic.c +++ b/src/superio/common/generic.c @@ -156,6 +156,146 @@ static void generic_ssdt(struct device *dev) acpigen_write_indexfield("INDX", "DATA", i, ARRAY_SIZE(i), FIELD_BYTEACC | FIELD_NOLOCK | FIELD_PRESERVE); + const char *mutex = "MTX0"; + + acpigen_write_mutex(mutex, 0); + /* Backup LDN */ + acpigen_write_name_integer("BLDN", 0); + + /* Acquire mutex - Enter config mode */ + acpigen_write_method("AMTX", 0); + { + acpigen_write_acquire(mutex, 0xffff); + + /* Pick one of the children as the generic SIO doesn't have config mode */ + if (dev->link_list && dev->link_list->children) + pnp_ssdt_enter_conf_mode(dev->link_list->children, "^INDX", "^DATA"); + + /* Backup LDN */ + acpigen_write_store(); + acpigen_emit_namestring("^LDN"); + acpigen_emit_namestring("^BLDN"); + } + acpigen_pop_len(); /* Method */ + + /* Release mutex - Exit config mode */ + acpigen_write_method("RMTX", 0); + { + /* Restore LDN */ + acpigen_write_store(); + acpigen_emit_namestring("^BLDN"); + acpigen_emit_namestring("^LDN"); + + /* Pick one of the children as the generic SIO doesn't have config mode */ + if (dev->link_list && dev->link_list->children) + pnp_ssdt_exit_conf_mode(dev->link_list->children, "^INDX", "^DATA"); + + acpigen_write_release(mutex); + } + acpigen_pop_len(); /* Method */ + + /* Select a LDN */ + acpigen_write_method("SLDN", 1); + { + /* Local0 = Arg0 & 0xff */ + acpigen_emit_byte(AND_OP); + acpigen_write_integer(0xff); + acpigen_emit_byte(ARG0_OP); + acpigen_emit_byte(LOCAL0_OP); + + /* LDN = LOCAL0_OP */ + acpigen_write_store(); + acpigen_emit_byte(LOCAL0_OP); + acpigen_emit_namestring("^LDN"); + } + acpigen_pop_len(); /* Method */ + + /* Disable a LDN/VLDN */ + acpigen_write_method("DLDN", 1); + { + /* AMTX() */ + acpigen_emit_namestring("AMTX"); + + /* SLDN (Local0) */ + acpigen_emit_namestring("SLDN"); + acpigen_emit_byte(ARG0_OP); + + /* Local0 = Arg0 >> 8 */ + acpigen_emit_byte(SHIFT_RIGHT_OP); + acpigen_emit_byte(ARG0_OP); + acpigen_write_integer(8); + acpigen_emit_byte(LOCAL0_OP); + + /* Local0 = Local0 & 0x7 */ + acpigen_emit_byte(AND_OP); + acpigen_write_integer(0x7); + acpigen_emit_byte(LOCAL0_OP); + acpigen_emit_byte(LOCAL0_OP); + + for (int j = 0; j < 8; j++) { + char act[6] = "^ACT0"; + act[4] += j; + + /* If (Local0 == j) { */ + acpigen_write_if_lequal_op_int(LOCAL0_OP, j); + + /* ACT[j] = 0 */ + acpigen_write_store(); + acpigen_emit_byte(ZERO_OP); + acpigen_emit_namestring(act); + + acpigen_pop_len(); /* } */ + } + + /* RMTX() */ + acpigen_emit_namestring("RMTX"); + } + acpigen_pop_len(); /* Method */ + + /* Query LDN enable state. Returns 1 if LDN/VLDN is enabled. */ + acpigen_write_method("QLDN", 1); + { + acpigen_emit_namestring("AMTX"); + + /* SLDN (Local0) */ + acpigen_emit_namestring("SLDN"); + acpigen_emit_byte(ARG0_OP); + + /* Local0 = Arg0 >> 8 */ + acpigen_emit_byte(SHIFT_RIGHT_OP); + acpigen_emit_byte(ARG0_OP); + acpigen_write_integer(8); + acpigen_emit_byte(LOCAL0_OP); + + /* Local0 = Local0 & 0x7 */ + acpigen_emit_byte(AND_OP); + acpigen_write_integer(0x7); + acpigen_emit_byte(LOCAL0_OP); + acpigen_emit_byte(LOCAL0_OP); + + for (int j = 0; j < 8; j++) { + char act[6] = "^ACT0"; + act[4] += j; + /* If (Local0 == j) { */ + acpigen_write_if_lequal_op_int(LOCAL0_OP, j); + + /* Local1 = ACT[j] */ + acpigen_write_store(); + acpigen_emit_namestring(act); + acpigen_emit_byte(LOCAL1_OP); + + acpigen_pop_len(); /* } */ + } + + /* RMTX() */ + acpigen_emit_namestring("RMTX"); + + /* Return (Local1) */ + acpigen_emit_byte(RETURN_OP); + acpigen_emit_byte(LOCAL1_OP); + } + acpigen_pop_len(); /* Method */ + acpigen_pop_len(); /* Device */ acpigen_pop_len(); /* Scope */ } |