From a277bacd56ff04e5b9818dd4913708fb85a8d8d8 Mon Sep 17 00:00:00 2001 From: Aaron Durbin Date: Tue, 12 Jul 2016 16:46:20 -0500 Subject: 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 Reviewed-on: https://review.coreboot.org/15644 Tested-by: build bot (Jenkins) Reviewed-by: Paul Menzel Reviewed-by: Furquan Shaikh Reviewed-by: Andrey Petrov --- src/soc/intel/apollolake/include/soc/gpio.h | 23 +++++++++++++++++++++++ 1 file changed, 23 insertions(+) (limited to 'src/soc/intel/apollolake/include') 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, \ -- cgit v1.2.3