diff options
| author | Aaron Durbin <adurbin@chromium.org> | 2016-07-12 16:46:20 -0500 |
|---|---|---|
| committer | Aaron Durbin <adurbin@chromium.org> | 2016-07-13 21:57:49 +0200 |
| commit | a277bacd56ff04e5b9818dd4913708fb85a8d8d8 (patch) | |
| tree | 2c18b86beb5a024aa379f5a1feb405d1659485e0 /src/soc/intel/apollolake | |
| parent | d41a338d55ec97bd5c9aa92ecb7dc163ff83dcd2 (diff) | |
| download | coreboot-a277bacd56ff04e5b9818dd4913708fb85a8d8d8.tar.xz | |
soc/intel/apollolake: provide gpio _HIGH/_LOW macros
Internally, apollolake routes its interrupts as active high.
This includes SCI, SMI, and ACPI. Therefore, provide helper
macros such that the user can describe an interrupt's active
high/low polarity more easily. It helps for readability when
one is comparing gpio configuration next to APIC configuration
in different files. Additionally, the gpio APIC macros always
use a LEVEL trigger in order to let the APIC handle the
filtering of the IRQ on its own end.
BUG=chrome-os-partner:54977
Change-Id: Id8fdcd98f0920936cd2b1a687fd8fa07bce9a614
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: https://review.coreboot.org/15644
Tested-by: build bot (Jenkins)
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: Furquan Shaikh <furquan@google.com>
Reviewed-by: Andrey Petrov <andrey.petrov@intel.com>
Diffstat (limited to 'src/soc/intel/apollolake')
| -rw-r--r-- | src/soc/intel/apollolake/include/soc/gpio.h | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/src/soc/intel/apollolake/include/soc/gpio.h b/src/soc/intel/apollolake/include/soc/gpio.h index 763cdefa4e..1ebac2dabc 100644 --- a/src/soc/intel/apollolake/include/soc/gpio.h +++ b/src/soc/intel/apollolake/include/soc/gpio.h @@ -67,18 +67,41 @@ typedef uint32_t gpio_t; PAD_FUNC(GPIO) | PAD_RESET(rst) | PAD_CFG0_TX_DISABLE | \ PAD_IRQ_CFG(IOAPIC, trig, inv), PAD_PULL(pull)) +/* + * The following APIC macros assume the APIC will handle the filtering + * on its own end. One just needs to pass an active high message into the + * ITSS. + */ +#define PAD_CFG_GPI_APIC_LOW(pad, pull, rst) \ + PAD_CFG_GPI_APIC(pad, pull, rst, LEVEL, INVERT) + +#define PAD_CFG_GPI_APIC_HIGH(pad, pull, rst) \ + PAD_CFG_GPI_APIC(pad, pull, rst, LEVEL, NONE) + /* General purpose input, routed to SMI */ #define PAD_CFG_GPI_SMI(pad, pull, rst, trig, inv) \ _PAD_CFG_STRUCT(pad, \ PAD_FUNC(GPIO) | PAD_RESET(rst) | PAD_CFG0_TX_DISABLE | \ PAD_IRQ_CFG(SMI, trig, inv), PAD_PULL(pull)) +#define PAD_CFG_GPI_SMI_LOW(pad, pull, rst, trig) \ + PAD_CFG_GPI_SMI(pad, pull, rst, trig, INVERT) + +#define PAD_CFG_GPI_SMI_HIGH(pad, pull, rst, trig) \ + PAD_CFG_GPI_SMI(pad, pull, rst, trig, NONE) + /* General purpose input, routed to SCI */ #define PAD_CFG_GPI_SCI(pad, pull, rst, trig, inv) \ _PAD_CFG_STRUCT(pad, \ PAD_FUNC(GPIO) | PAD_RESET(rst) | PAD_CFG0_TX_DISABLE | \ PAD_IRQ_CFG(SCI, trig, inv), PAD_PULL(pull)) +#define PAD_CFG_GPI_SCI_LOW(pad, pull, rst, trig) \ + PAD_CFG_GPI_SCI(pad, pull, rst, trig, INVERT) + +#define PAD_CFG_GPI_SCI_HIGH(pad, pull, rst, trig) \ + PAD_CFG_GPI_SCI(pad, pull, rst, trig, NONE) + /* General purpose input, routed to NMI */ #define PAD_CFG_GPI_NMI(pad, pull, rst, trig, inv) \ _PAD_CFG_STRUCT(pad, \ |