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authorAaron Durbin <adurbin@chromium.org>2013-11-20 15:21:40 -0600
committerKyösti Mälkki <kyosti.malkki@gmail.com>2014-05-07 22:06:34 +0200
commit21565cac1b0b34c3e76c1bcd2bf933ac1313ecac (patch)
tree39fbed653a7d8c7a924ed1b948c771f256b2549c /src/mainboard/google
parentbaa1e382178ab6a45c5d584a88ac26c0767f8a12 (diff)
downloadcoreboot-21565cac1b0b34c3e76c1bcd2bf933ac1313ecac.tar.xz
rambi: use SERIRQ pad as keyboard irq in gpio mode
The level shifting between 3.3V and 1.8V for the SERIRQ signal is not working. Instead use the SERIRQ pad as a gpio which is used as a direct IRQ signal for the keyboard interupt. BUG=chrome-os-partner:23965 BRANCH=None TEST=Built and booted rambi. Keyboard works with associated EC change. CQ-DEPEND=CL:177189 Change-Id: Ifc270ca38207828a6d4711551d4bde9121559cca Signed-off-by: Aaron Durbin <adurbin@chromium.org> Reviewed-on: https://chromium-review.googlesource.com/177223 Tested-by: Bernie Thompson <bhthompson@chromium.org> Reviewed-on: http://review.coreboot.org/4979 Tested-by: build bot (Jenkins) Reviewed-by: Patrick Georgi <patrick@georgi-clan.de>
Diffstat (limited to 'src/mainboard/google')
-rw-r--r--src/mainboard/google/rambi/acpi/superio.asl3
-rw-r--r--src/mainboard/google/rambi/gpio.c3
-rw-r--r--src/mainboard/google/rambi/irqroute.h2
-rw-r--r--src/mainboard/google/rambi/onboard.h2
4 files changed, 9 insertions, 1 deletions
diff --git a/src/mainboard/google/rambi/acpi/superio.asl b/src/mainboard/google/rambi/acpi/superio.asl
index f40611c78f..3199ed5314 100644
--- a/src/mainboard/google/rambi/acpi/superio.asl
+++ b/src/mainboard/google/rambi/acpi/superio.asl
@@ -19,10 +19,13 @@
/* mainboard configuration */
#include <mainboard/google/rambi/ec.h>
+#include <mainboard/google/rambi/onboard.h>
#define SIO_EC_MEMMAP_ENABLE // EC Memory Map Resources
#define SIO_EC_HOST_ENABLE // EC Host Interface Resources
#define SIO_EC_ENABLE_PS2K // Enable PS/2 Keyboard
+// Override default IRQ settings
+#define SIO_EC_PS2K_IRQ Interrupt(ResourceConsumer, Edge, ActiveLow) {BOARD_I8042_IRQ}
/* ACPI code for EC SuperIO functions */
#include <ec/google/chromeec/acpi/superio.asl>
diff --git a/src/mainboard/google/rambi/gpio.c b/src/mainboard/google/rambi/gpio.c
index dfe880a7af..76002cfd43 100644
--- a/src/mainboard/google/rambi/gpio.c
+++ b/src/mainboard/google/rambi/gpio.c
@@ -106,7 +106,7 @@ static const struct soc_gpio_map gpscore_gpio_map[] = {
GPIO_FUNC1, /* S0-SC047 - PCLK_TPM */
GPIO_FUNC1, /* S0-SC048 - CLK_PCI_EC */
GPIO_FUNC1, /* S0-SC049 - LPC_CLKRUN_L */
- GPIO_FUNC(1, PULL_UP, 10K), /* S0-SC050 - IRQ_SERIRQ */
+ GPIO_DIRQ, /* S0-SC050 - IRQ_SERIRQ -- using for keyboard irq */
GPIO_NC, /* S0-SC051 - SMB_SOC_DATA (XDP) */
GPIO_NC, /* S0-SC052 - SMB_SOC_CLK (XDP) */
GPIO_NC, /* S0-SC053 - SMB_SOC_ALERTB (NC) */
@@ -213,6 +213,7 @@ static const struct soc_gpio_map gpssus_gpio_map[] = {
static const u8 core_dedicated_irq[GPIO_MAX_DIRQS] = {
[TPAD_IRQ_OFFSET] = TPAD_IRQ_GPIO,
[TOUCH_IRQ_OFFSET] = TOUCH_IRQ_GPIO,
+ [I8042_IRQ_OFFSET] = I8042_IRQ_GPIO,
};
static const u8 sus_dedicated_irq[GPIO_MAX_DIRQS] = {
diff --git a/src/mainboard/google/rambi/irqroute.h b/src/mainboard/google/rambi/irqroute.h
index eaafff97bf..ddf6a76160 100644
--- a/src/mainboard/google/rambi/irqroute.h
+++ b/src/mainboard/google/rambi/irqroute.h
@@ -49,6 +49,8 @@
/* CORE bank DIRQs - up to 16 supported */
#define TPAD_IRQ_OFFSET 0
#define TOUCH_IRQ_OFFSET 1
+#define I8042_IRQ_OFFSET 2
/* Corresponding SCORE GPIO pins */
#define TPAD_IRQ_GPIO 55
#define TOUCH_IRQ_GPIO 72
+#define I8042_IRQ_GPIO 50
diff --git a/src/mainboard/google/rambi/onboard.h b/src/mainboard/google/rambi/onboard.h
index 6a8e751aeb..7f5d88525f 100644
--- a/src/mainboard/google/rambi/onboard.h
+++ b/src/mainboard/google/rambi/onboard.h
@@ -34,4 +34,6 @@
#define BOARD_TOUCHSCREEN_I2C_BUS 5
#define BOARD_TOUCHSCREEN_I2C_ADDR 0x4a /* TODO(shawnn): Check this */
+#define BOARD_I8042_IRQ GPIO_S0_DED_IRQ(I8042_IRQ_OFFSET)
+
#endif