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mb/google/dedede/var/drawcia: Add support to handle pen detection 

For board version 6 afterward, it will have external pull-up for
GPP_C12, and remove internal pull-up.

BUG=b:177618684
TEST=emerge-dedede coreboot, check evtest if SW_PEN_INSERTED event
(value:1/0) when insert/eject pen, and eject pen to wake system from s0ix

Signed-off-by: Wisley Chen <wisley.chen@quantatw.com>
Change-Id: I503873afb48384168dcd8a822c7246655898356e
Reviewed-on: https://review.coreboot.org/c/coreboot/+/49469
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Karthik Ramasubramanian <kramasub@google.com>
Reviewed-by: Henry Sun <henrysun@google.com>
This commit is contained in:
Wisley Chen 2021-01-15 13:48:38 +08:00 committed by Patrick Georgi
parent 8130959d01
commit 5e6e5c11c7
3 changed files with 48 additions and 0 deletions
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1
src/mainboard/google/dedede/variants/drawcia/Makefile.inc
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@ -1,3 +1,4 @@
## SPDX-License-Identifier: GPL-2.0-or-later
ramstage-y += gpio.c
ramstage-$(CONFIG_FW_CONFIG) += variant.c

36
src/mainboard/google/dedede/variants/drawcia/gpio.c Normal file
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@ -0,0 +1,36 @@
/* SPDX-License-Identifier: GPL-2.0-or-later */
#include <baseboard/gpio.h>
#include <baseboard/variants.h>
#include <fw_config.h>
#include <console/console.h>
#include <ec/google/chromeec/ec.h>
/* Pad configuration in ramstage*/
static const struct pad_config pre_board6_gpio_table[] = {
/* C12 : AP_PEN_DET_ODL */
PAD_CFG_GPI_GPIO_DRIVER(GPP_C12, UP_20K, DEEP),
};
/* bid6: Pad configuration for board version 6 afterward in ramstage*/
static const struct pad_config board6_gpio_table[] = {
/* C12 : AP_PEN_DET_ODL has an external pull-up and hence no pad termination.*/
PAD_CFG_GPI_GPIO_DRIVER(GPP_C12, NONE, DEEP),
};
const struct pad_config *variant_override_gpio_table(size_t *num)
{
uint32_t board_version;
*num = ARRAY_SIZE(pre_board6_gpio_table);
if (!google_chromeec_cbi_get_board_version(&board_version)) {
if (board_version >= 6) {
*num = ARRAY_SIZE(board6_gpio_table);
return board6_gpio_table;
}
}
return pre_board6_gpio_table;
}

11
src/mainboard/google/dedede/variants/drawcia/overridetree.cb
View File

@ -162,6 +162,17 @@ chip soc/intel/jasperlake
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/generic
register "hid" = ""ELAN0001""
register "desc" = ""ELAN Touchscreen""