diff options
| author | Freddy Paul <freddy.paul@intel.com> | 2016-06-15 22:50:13 -0700 |
|---|---|---|
| committer | Aaron Durbin <adurbin@chromium.org> | 2016-06-21 17:10:12 +0200 |
| commit | 82007619129abe7928e0bd2a88602d156406675e (patch) | |
| tree | 7e4f0b2bd7a70f45479af4196dac6edff3a4fe8f /src | |
| parent | 1706cb3ee36e61441a6e65fb4428abdec2bcf69b (diff) | |
| download | coreboot-82007619129abe7928e0bd2a88602d156406675e.tar.xz | |
google/reef: Add ACPI code for trackpad
This patch enlists ELAN trackpad on I2C4 for reef board.
BUG=None
TEST=Build and boot to OS.
Ensure ELAN trackpad is working with ELAN trackpad driver enabled
in kernel.
Change-Id: I788600f16dea9fac0e089cb82ccfc38a960157f9
Signed-off-by: Freddy Paul <freddy.paul@intel.com>
Reviewed-on: https://review.coreboot.org/15213
Tested-by: build bot (Jenkins)
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
Diffstat (limited to 'src')
| -rw-r--r-- | src/mainboard/google/reef/acpi/mainboard.asl | 44 | ||||
| -rw-r--r-- | src/mainboard/google/reef/gpio.h | 5 |
2 files changed, 49 insertions, 0 deletions
diff --git a/src/mainboard/google/reef/acpi/mainboard.asl b/src/mainboard/google/reef/acpi/mainboard.asl index 06b2efc9ac..5471488085 100644 --- a/src/mainboard/google/reef/acpi/mainboard.asl +++ b/src/mainboard/google/reef/acpi/mainboard.asl @@ -14,6 +14,7 @@ */ #include "acpi/superio.asl" +#include "../gpio.h" Scope (\_SB) { @@ -32,6 +33,49 @@ Scope (\_SB) } } +Scope (\_SB.PCI0.I2C4) +{ + /* Standard Mode: HCNT, LCNT, SDA Hold Register */ + /* SDA Hold register value of 40 indicates + * sda hold time of 0.3us for ic_clk of 133MHz + */ + Name (SSCN, Package () { 0, 0, 40 }) + + /* Fast Mode: HCNT, LCNT, SDA Hold Register */ + /* SDA Hold register value of 40 indicates + * sda hold time of 0.3us for ic_clk of 133MHz + */ + Name (FMCN, Package () { 0, 0, 40 }) + + Device (ETPA) + { + Name (_HID, "ELAN0000") + Name (_DDN, "Elan Touchpad") + Name (_UID, 1) + Name (ISTP, 1) /* Touchpad */ + + Name (_CRS, ResourceTemplate() + { + I2cSerialBus ( + 0x15, // SlaveAddress + ControllerInitiated, // SlaveMode + 400000, // ConnectionSpeed + AddressingMode7Bit, // AddressingMode + "\\_SB.PCI0.I2C4", // ResourceSource + ) + Interrupt (ResourceConsumer, Edge, ActiveLow) + { + TOUCHPAD_INT + } + }) + + Method (_STA) + { + Return (0xF) + } + } +} + /* * LPC Trusted Platform Module */ diff --git a/src/mainboard/google/reef/gpio.h b/src/mainboard/google/reef/gpio.h index 506633b2e7..23628eb15f 100644 --- a/src/mainboard/google/reef/gpio.h +++ b/src/mainboard/google/reef/gpio.h @@ -18,6 +18,10 @@ #include <soc/gpio.h> +/* Input device interrupt configuration */ +#define TOUCHPAD_INT GPIO_18_IRQ + +#ifndef __ACPI__ /* * Pad configuration in ramstage. The order largely follows the 'GPIO Muxing' * table found in EDS vol 1, but some pins aren't grouped functionally in @@ -339,4 +343,5 @@ static const struct pad_config early_gpio_table[] = { PAD_CFG_GPI(GPIO_75, UP_20K, DEEP), /* I2S1_BCLK -- PCH_WP */ }; +#endif /* __ACPI__ */ #endif /* MAINBOARD_GPIO_H */ |