Change in coreboot[master]: mb/google/dedede: Update Storo setting for PEN detection.

[Felix Held (Code Review)]

Felix Held has submitted this change. ( https://review.coreboot.org/c/coreboot/+/54762 )

Change subject: mb/google/dedede: Update Storo setting for PEN detection.
......................................................................

mb/google/dedede: Update Storo setting for PEN detection.

Update devicetree and gpio driving of storo that enable stylus
Updates the GPIO configuration for GPP_C12 to
PAD_CFG_GPI_GPIO_DRIVER and device tree entry for PENH device to
use WAKEUP_ROUTE_GPIO_IRQ.

BUG=b:188519508,b:188365033
BRANCH=dedede
TEST=build bios and the pen behavior can be detected.

Change-Id: I2ffc969569b3ca29ba76326140f958a9707199f7
Signed-off-by: Zanxi Chen 
Reviewed-on: https://review.coreboot.org/c/coreboot/+/54762
Reviewed-by: Karthik Ramasubramanian 
Tested-by: build bot (Jenkins) 
---
M src/mainboard/google/dedede/variants/storo/gpio.c
M src/mainboard/google/dedede/variants/storo/overridetree.cb
2 files changed, 15 insertions(+), 1 deletion(-)

Approvals:
  build bot (Jenkins): Verified
  Karthik Ramasubramanian: Looks good to me, approved

diff --git a/src/mainboard/google/dedede/variants/storo/gpio.c b/src/mainboard/google/dedede/variants/storo/gpio.c
index 71e78dc..3d830e7 100644
--- a/src/mainboard/google/dedede/variants/storo/gpio.c
+++ b/src/mainboard/google/dedede/variants/storo/gpio.c
@@ -11,6 +11,9 @@
    /* B7  : PCIE_CLKREQ2_N ==> WWAN_SAR_DETECT_ODL*/
    PAD_CFG_GPI_IRQ_WAKE(GPP_B7, NONE, DEEP, LEVEL, INVERT),

+	/* C12 : AP_PEN_DET_ODL */
+	PAD_CFG_GPI_GPIO_DRIVER(GPP_C12, UP_20K, DEEP),
+
    /* D15 : EN_PP3300_CAMERA */
    PAD_CFG_GPO(GPP_D15, 1, PLTRST),
    /* D22 : AP_I2C_SUB_SDA*/
diff --git a/src/mainboard/google/dedede/variants/storo/overridetree.cb b/src/mainboard/google/dedede/variants/storo/overridetree.cb
index 14eed3d..40b17df 100644
--- a/src/mainboard/google/dedede/variants/storo/overridetree.cb
+++ b/src/mainboard/google/dedede/variants/storo/overridetree.cb
@@ -13,7 +13,7 @@
    #|                   | for TPM communication     |
    #|                   | before memory is up       |
    #| I2C0              | Trackpad                  |
-	#| I2C1              | Digitizer                 |
+	#| I2C1              | Digitizer, Stylus         |
    #| I2C2              | Touchscreen               |
    #| I2C3              | Camera                    |
    #| I2C4              | Audio                     |
@@ -119,6 +119,17 @@
    		end
    	end #I2C 0
    	device pci 15.2 on
+			chip drivers/generic/gpio_keys
+				register "name" = ""PENH""
+				register "gpio" = "ACPI_GPIO_INPUT_ACTIVE_LOW(GPP_C12)"
+				register "key.wakeup_route" = "WAKEUP_ROUTE_GPIO_IRQ"
+				register "key.wakeup_event_action" = "EV_ACT_DEASSERTED"
+				register "key.dev_name" = ""EJCT""
+				register "key.linux_code" = "SW_PEN_INSERTED"
+				register "key.linux_input_type" = "EV_SW"
+				register "key.label" = ""pen_eject""
+				device generic 0 on end
+			end
    		chip drivers/i2c/hid
    			register "generic.hid" = ""ELAN9008""
    			register "generic.desc" = ""ELAN Touchscreen""