[coreboot-gerrit] Change in coreboot[master]: soc/amd/stoneyridge: Add gpio_interrupt_status
Chris Ching (Code Review)
gerrit at coreboot.org
Tue Feb 6 20:38:42 CET 2018
Chris Ching has uploaded this change for review. ( https://review.coreboot.org/23625
Change subject: soc/amd/stoneyridge: Add gpio_interrupt_status
......................................................................
soc/amd/stoneyridge: Add gpio_interrupt_status
BUG=b:72838769
BRANCH=none
TEST=read interrupt and check is cleared on grunt TPM
Change-Id: I7ed76eaf56338a314a8d0ee6faad1ab8dbf8dfb0
Signed-off-by: Chris Ching <chingcodes at chromium.org>
---
M src/soc/amd/stoneyridge/gpio.c
M src/soc/amd/stoneyridge/include/soc/gpio.h
2 files changed, 20 insertions(+), 0 deletions(-)
git pull ssh://review.coreboot.org:29418/coreboot refs/changes/25/23625/1
diff --git a/src/soc/amd/stoneyridge/gpio.c b/src/soc/amd/stoneyridge/gpio.c
index ec02c99..d1ffc39 100644
--- a/src/soc/amd/stoneyridge/gpio.c
+++ b/src/soc/amd/stoneyridge/gpio.c
@@ -117,3 +117,19 @@
write32((void *)gpio_address, reg | flags);
}
+
+int gpio_interrupt_status(gpio_t gpio)
+{
+ uint32_t reg;
+ uintptr_t gpio_address = gpio_get_address(gpio);
+
+ reg = read32((void *)gpio_address);
+
+ if (reg & GPIO_INT_STATUS) {
+ /* Clear the status bit. */
+ write32((void *)gpio_address, reg);
+ return 1;
+ }
+
+ return 0;
+}
diff --git a/src/soc/amd/stoneyridge/include/soc/gpio.h b/src/soc/amd/stoneyridge/include/soc/gpio.h
index 63f6dfa..8b00976 100644
--- a/src/soc/amd/stoneyridge/include/soc/gpio.h
+++ b/src/soc/amd/stoneyridge/include/soc/gpio.h
@@ -158,5 +158,9 @@
/* Configure the gpio with specific flags. */
void gpio_set_config(gpio_t gpio, uint32_t flags);
+
+/* Return the interrupt status and clear if set. */
+int gpio_interrupt_status(gpio_t gpio);
+
#endif /* __ACPI__ */
#endif /* __STONEYRIDGE_GPIO_H__ */
--
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Gerrit-Project: coreboot
Gerrit-Branch: master
Gerrit-MessageType: newchange
Gerrit-Change-Id: I7ed76eaf56338a314a8d0ee6faad1ab8dbf8dfb0
Gerrit-Change-Number: 23625
Gerrit-PatchSet: 1
Gerrit-Owner: Chris Ching <chingcodes at chromium.org>
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