[coreboot-gerrit] Patch set updated for coreboot: sio/winbond/common: Add function to configure pin mux
Timothy Pearson (tpearson@raptorengineering.com)
gerrit at coreboot.org
Wed May 25 04:26:27 CEST 2016
Timothy Pearson (tpearson at raptorengineering.com) just uploaded a new patch set to gerrit, which you can find at https://review.coreboot.org/14960
-gerrit
commit 6a75a4a07428530b59db80992dbaac1a19763e2a
Author: Timothy Pearson <tpearson at raptorengineering.com>
Date: Tue May 24 15:48:50 2016 -0500
sio/winbond/common: Add function to configure pin mux
Certain mainboards require SuperIO pinmux configuration before
peripherals will become operational. Allow each mainboard to
configure the pinmux(es) of Winbond chips if needed.
Change-Id: Ice19f8d8514b66b15920a5b893700d636ed75cec
Signed-off-by: Timothy Pearson <tpearson at raptorengineering.com>
---
src/superio/winbond/common/early_serial.c | 13 +++++++++++++
src/superio/winbond/common/winbond.h | 9 ++++++++-
2 files changed, 21 insertions(+), 1 deletion(-)
diff --git a/src/superio/winbond/common/early_serial.c b/src/superio/winbond/common/early_serial.c
index 6482a94..aebbd38 100644
--- a/src/superio/winbond/common/early_serial.c
+++ b/src/superio/winbond/common/early_serial.c
@@ -66,3 +66,16 @@ void winbond_enable_serial(pnp_devfn_t dev, u16 iobase)
pnp_set_enable(dev, 1);
pnp_exit_conf_state(dev);
}
+
+void winbond_set_pinmux(pnp_devfn_t dev, uint8_t offset, uint8_t mask, uint8_t state)
+{
+ uint8_t byte;
+
+ /* Configure pin mux */
+ pnp_enter_conf_state(dev);
+ byte = pnp_read_config(dev, offset);
+ byte &= ~mask;
+ byte |= state;
+ pnp_write_config(dev, offset, byte);
+ pnp_exit_conf_state(dev);
+}
diff --git a/src/superio/winbond/common/winbond.h b/src/superio/winbond/common/winbond.h
index 1f7e7b1..48dd120 100644
--- a/src/superio/winbond/common/winbond.h
+++ b/src/superio/winbond/common/winbond.h
@@ -20,7 +20,14 @@
#include <arch/io.h>
#include <stdint.h>
-void winbond_enable_serial(pnp_devfn_t dev, u16 iobase);
+#define W83667HG_SPI_PINMUX_OFFSET 0x2a
+
+#define W83667HG_SPI_PINMUX_GPIO4_SERIAL_B_MASK (1 << 2)
+#define W83667HG_SPI_PINMUX_GPIO4 (0 << 2)
+#define W83667HG_SPI_PINMUX_SERIAL_B (1 << 2)
+
+void winbond_enable_serial(pnp_devfn_t dev, uint16_t iobase);
+void winbond_set_pinmux(pnp_devfn_t dev, uint8_t offset, uint8_t mask, uint8_t state);
void pnp_enter_conf_state(pnp_devfn_t dev);
void pnp_exit_conf_state(pnp_devfn_t dev);
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