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path: root/drivers/mfd/cros_ec_acpi_gpe.c
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Diffstat (limited to 'drivers/mfd/cros_ec_acpi_gpe.c')
-rw-r--r--drivers/mfd/cros_ec_acpi_gpe.c103
1 files changed, 0 insertions, 103 deletions
diff --git a/drivers/mfd/cros_ec_acpi_gpe.c b/drivers/mfd/cros_ec_acpi_gpe.c
deleted file mode 100644
index 56d305dab2d4..000000000000
--- a/drivers/mfd/cros_ec_acpi_gpe.c
+++ /dev/null
@@ -1,103 +0,0 @@
-/*
- * ChromeOS EC multi-function device
- *
- * Copyright (C) 2017 Google, Inc
- *
- * This software is licensed under the terms of the GNU General Public
- * License version 2, as published by the Free Software Foundation, and
- * may be copied, distributed, and modified under those terms.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * The ChromeOS EC multi function device is used to mux all the requests
- * to the EC device for its multiple features: keyboard controller,
- * battery charging and regulator control, firmware update.
- */
-#include <linux/acpi.h>
-
-#define ACPI_LID_DEVICE "LID0"
-
-static int ec_wake_gpe = -EINVAL;
-
-/*
- * This handler indicates to ACPI core that this GPE should stay enabled for
- * lid to work in suspend to idle path.
- */
-static u32 cros_ec_gpe_handler(acpi_handle gpe_device, u32 gpe_number,
- void *data)
-{
- return ACPI_INTERRUPT_HANDLED | ACPI_REENABLE_GPE;
-}
-
-/*
- * Get ACPI GPE for LID0 device.
- */
-static int cros_ec_get_ec_wake_gpe(struct device *dev)
-{
- struct acpi_device *cros_acpi_dev;
- struct acpi_device *adev;
- acpi_handle handle;
- acpi_status status;
- int ret;
-
- cros_acpi_dev = ACPI_COMPANION(dev);
-
- if (!cros_acpi_dev || !cros_acpi_dev->parent ||
- !cros_acpi_dev->parent->handle)
- return -EINVAL;
-
- status = acpi_get_handle(cros_acpi_dev->parent->handle, ACPI_LID_DEVICE,
- &handle);
- if (ACPI_FAILURE(status))
- return -EINVAL;
-
- ret = acpi_bus_get_device(handle, &adev);
- if (ret)
- return ret;
-
- return adev->wakeup.gpe_number;
-}
-
-int cros_ec_acpi_install_gpe_handler(struct device *dev)
-{
- acpi_status status;
-
- ec_wake_gpe = cros_ec_get_ec_wake_gpe(dev);
-
- if (ec_wake_gpe < 0)
- return ec_wake_gpe;
-
- status = acpi_install_gpe_handler(NULL, ec_wake_gpe,
- ACPI_GPE_EDGE_TRIGGERED,
- &cros_ec_gpe_handler, NULL);
- if (ACPI_FAILURE(status))
- return -ENODEV;
-
- dev_info(dev, "Initialized, GPE = 0x%x\n", ec_wake_gpe);
-
- return 0;
-}
-
-void cros_ec_acpi_remove_gpe_handler(void)
-{
- acpi_status status;
-
- if (ec_wake_gpe < 0)
- return;
-
- status = acpi_remove_gpe_handler(NULL, ec_wake_gpe,
- &cros_ec_gpe_handler);
- if (ACPI_FAILURE(status))
- pr_err("failed to remove gpe handler\n");
-}
-
-void cros_ec_acpi_clear_gpe(void)
-{
- if (ec_wake_gpe < 0)
- return;
-
- acpi_clear_gpe(NULL, ec_wake_gpe);
-}