diff options
| author | Timothy Pearson <tpearson@raptorengineering.com> | 2016-05-24 15:48:50 -0500 |
|---|---|---|
| committer | Timothy Pearson <tpearson@raptorengineering.com> | 2016-05-29 19:34:02 +0200 |
| commit | e4cca16b426f3907983992352ae9ace7cce1c41f (patch) | |
| tree | c801038722d6f3477617703d8f2c9f48a526956b /src/superio | |
| parent | 161d2334e863b26fc893c6bbf8f8cb8b811ce586 (diff) | |
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@raptorengineering.com>
Reviewed-on: https://review.coreboot.org/14960
Tested-by: build bot (Jenkins)
Reviewed-by: Felix Held <felix-coreboot@felixheld.de>
Diffstat (limited to 'src/superio')
| -rw-r--r-- | src/superio/winbond/common/early_serial.c | 13 | ||||
| -rw-r--r-- | src/superio/winbond/common/winbond.h | 3 |
2 files changed, 15 insertions, 1 deletions
diff --git a/src/superio/winbond/common/early_serial.c b/src/superio/winbond/common/early_serial.c index 6482a94838..aebbd38b46 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 1f7e7b1794..6e67eeb83d 100644 --- a/src/superio/winbond/common/winbond.h +++ b/src/superio/winbond/common/winbond.h @@ -20,7 +20,8 @@ #include <arch/io.h> #include <stdint.h> -void winbond_enable_serial(pnp_devfn_t dev, u16 iobase); +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); |