soc/amd/stoneyridge: Add iomux read/write functions

Add functions to read and write the region in the AcpiMmio block.
Convert gpio.c to use them instead of creating pointers.

Change-Id: I2a0f44b6ec7261648cf0357b44a6c18dd40d1504
Signed-off-by: Marshall Dawson <marshalldawson3rd@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/32647
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Martin Roth <martinroth@google.com>

1 files changed, 6 insertions, 0 deletions

diff --git a/src/soc/amd/stoneyridge/include/soc/southbridge.h b/src/soc/amd/stoneyridge/include/soc/southbridge.h
index e5ba2af5eb..f755c0a0d4 100644
--- a/src/soc/amd/stoneyridge/include/soc/southbridge.h
+++ b/src/soc/amd/stoneyridge/include/soc/southbridge.h
@@ -529,6 +529,12 @@ void xhci_pm_write16(uint8_t reg, uint16_t value);
 uint16_t xhci_pm_read16(uint8_t reg);
 void xhci_pm_write32(uint8_t reg, uint32_t value);
 uint32_t xhci_pm_read32(uint8_t reg);
+u8 iomux_read8(u8 reg);
+u16 iomux_read16(u8 reg);
+u32 iomux_read32(u8 reg);
+void iomux_write8(u8 reg, u8 value);
+void iomux_write16(u8 reg, u16 value);
+void iomux_write32(u8 reg, u32 value);
 uint8_t asf_read8(uint8_t offset);
 uint16_t asf_read16(uint8_t offset);
 void asf_write8(uint8_t offset, uint8_t value);