summaryrefslogtreecommitdiff
path: root/src/soc/intel/skylake/acpi.c
diff options
context:
space:
mode:
Diffstat (limited to 'src/soc/intel/skylake/acpi.c')
-rw-r--r--src/soc/intel/skylake/acpi.c37
1 files changed, 37 insertions, 0 deletions
diff --git a/src/soc/intel/skylake/acpi.c b/src/soc/intel/skylake/acpi.c
index 64438bdd80..77fbb48570 100644
--- a/src/soc/intel/skylake/acpi.c
+++ b/src/soc/intel/skylake/acpi.c
@@ -695,3 +695,40 @@ const char *soc_acpi_name(struct device *dev)
return NULL;
}
+
+static int acpigen_soc_gpio_op(const char *op, unsigned int gpio_num)
+{
+ /* op (gpio_num) */
+ acpigen_emit_namestring(op);
+ acpigen_write_integer(gpio_num);
+ return 0;
+}
+
+static int acpigen_soc_get_gpio_state(const char *op, unsigned int gpio_num)
+{
+ /* Store (op (gpio_num), Local0) */
+ acpigen_write_store();
+ acpigen_soc_gpio_op(op, gpio_num);
+ acpigen_emit_byte(LOCAL0_OP);
+ return 0;
+}
+
+int acpigen_soc_read_rx_gpio(unsigned int gpio_num)
+{
+ return acpigen_soc_get_gpio_state("\\_SB.PCI0.GRXS", gpio_num);
+}
+
+int acpigen_soc_get_tx_gpio(unsigned int gpio_num)
+{
+ return acpigen_soc_get_gpio_state("\\_SB.PCI0.GTXS", gpio_num);
+}
+
+int acpigen_soc_set_tx_gpio(unsigned int gpio_num)
+{
+ return acpigen_soc_gpio_op("\\_SB.PCI0.STXS", gpio_num);
+}
+
+int acpigen_soc_clear_tx_gpio(unsigned int gpio_num)
+{
+ return acpigen_soc_gpio_op("\\_SB.PCI0.CTXS", gpio_num);
+}