Change in coreboot[master]: soc/intel/alderlake: Enable trackpad support

[Sugnan Prabhu S (Code Review)]

Sugnan Prabhu S has uploaded this change for review. ( https://review.coreboot.org/c/coreboot/+/48460 )

Change subject: soc/intel/alderlake: Enable trackpad support
......................................................................

soc/intel/alderlake: Enable trackpad support

1. Configure trackpad interrupt GPIO.
2. Add trackpad ACPI support.

Change-Id: Ic3fd49b609a0a7d4a616ce156bdcabd2cf27fb47
Signed-off-by: Sugnan Prabhu S 
---
M src/mainboard/intel/adlrvp/gpio.c
M src/mainboard/intel/shadowmountain/variants/baseboard/devicetree.cb
2 files changed, 14 insertions(+), 5 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/60/48460/1

diff --git a/src/mainboard/intel/adlrvp/gpio.c b/src/mainboard/intel/adlrvp/gpio.c
index 8ff6fcd..ff29fa5 100644
--- a/src/mainboard/intel/adlrvp/gpio.c
+++ b/src/mainboard/intel/adlrvp/gpio.c
@@ -77,8 +77,8 @@

/* CAM1_RST */
    PAD_CFG_GPO(GPP_R5, 1, PLTRST),
-	/* CAM2_RST */
-	PAD_CFG_GPO(GPP_E15, 1, PLTRST),
+	/* TRACKPAD_INT_ODL */
+	PAD_CFG_GPI_IRQ_WAKE(GPP_E15, NONE, DEEP, LEVEL, INVERT),
    /* CAM1_PWR_EN */
    PAD_CFG_GPO(GPP_B23, 1, PLTRST),
    /* CAM2_PWR_EN */
@@ -169,7 +169,7 @@
    PAD_CFG_NF(GPP_B6, NONE, DEEP, NF2),
    /* I2C_SCL(3) */
    PAD_CFG_NF(GPP_B8, NONE, DEEP, NF2),
-	/* I2C_SCL(5) */
+	/* I2C_SCL(5) PCH_I2C5_TRACKPAD_SCL */
    PAD_CFG_NF(GPP_B17, NONE, DEEP, NF2),

/* I2C_SDA(0) */
@@ -180,7 +180,7 @@
    PAD_CFG_NF(GPP_B5, NONE, DEEP, NF2),
    /* I2C_SDA(3) */
    PAD_CFG_NF(GPP_B7, NONE, DEEP, NF2),
-	/* I2C_SDA(5) */
+	/* I2C_SDA(5) PCH_I2C5_TRACKPAD_SDA */
    PAD_CFG_NF(GPP_B16, NONE, DEEP, NF2),

/* I2S0_SCLK */
diff --git a/src/mainboard/intel/shadowmountain/variants/baseboard/devicetree.cb b/src/mainboard/intel/shadowmountain/variants/baseboard/devicetree.cb
index ee85d4b..38c8bbb 100644
--- a/src/mainboard/intel/shadowmountain/variants/baseboard/devicetree.cb
+++ b/src/mainboard/intel/shadowmountain/variants/baseboard/devicetree.cb
@@ -245,7 +245,16 @@
    	device pci 16.5 off end # HECI4
    	device pci 17.0 on  end # SATA
    	device pci 19.0 off end # I2C4
-		device pci 19.1 on  end # I2C5
+		device pci 19.1 on
+			chip drivers/i2c/generic
+				register "hid" = ""ELAN0000""
+				register "desc" = ""ELAN Touchpad""
+				register "irq" = "ACPI_IRQ_WAKE_LEVEL_LOW(GPP_E15_IRQ)"
+				register "wake" = "GPE0_DW2_15"
+				register "probed" = "1"
+				device i2c 15 on end
+			end
+		end # I2C5
    	device pci 19.2 off end # UART2
    	device pci 1c.0 off  end # RP1
    	device pci 1c.1 off end # RP2