mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-08-23 09:19:51 +00:00
![Mika Westerberg](/assets/img/avatar_default.png)
Intel Elkhart Lake exposes SCU/PMC as an ACPI device that only supports IPC functionality so add a platform driver supporting it. Interrupt is optional so we let intel_scu_ipc_probe() to decide based on the passed platform data whether it uses interrupt or polling. Co-developed-by: Divya Sasidharan <divya.s.sasidharan@intel.com> Signed-off-by: Divya Sasidharan <divya.s.sasidharan@intel.com> Co-developed-by: Rajmohan Mani <rajmohan.mani@intel.com> Signed-off-by: Rajmohan Mani <rajmohan.mani@intel.com> Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com> Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
60 lines
1.6 KiB
C
60 lines
1.6 KiB
C
// SPDX-License-Identifier: GPL-2.0
|
|
/*
|
|
* Platform driver for the Intel SCU.
|
|
*
|
|
* Copyright (C) 2019, Intel Corporation
|
|
* Authors: Divya Sasidharan <divya.s.sasidharan@intel.com>
|
|
* Mika Westerberg <mika.westerberg@linux.intel.com>
|
|
* Rajmohan Mani <rajmohan.mani@intel.com>
|
|
*/
|
|
|
|
#include <linux/err.h>
|
|
#include <linux/errno.h>
|
|
#include <linux/ioport.h>
|
|
#include <linux/mod_devicetable.h>
|
|
#include <linux/module.h>
|
|
#include <linux/platform_device.h>
|
|
|
|
#include <asm/intel_scu_ipc.h>
|
|
|
|
static int intel_scu_platform_probe(struct platform_device *pdev)
|
|
{
|
|
struct intel_scu_ipc_data scu_data = {};
|
|
struct intel_scu_ipc_dev *scu;
|
|
const struct resource *res;
|
|
|
|
scu_data.irq = platform_get_irq_optional(pdev, 0);
|
|
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
|
|
if (!res)
|
|
return -ENOMEM;
|
|
|
|
scu_data.mem = *res;
|
|
|
|
scu = devm_intel_scu_ipc_register(&pdev->dev, &scu_data);
|
|
if (IS_ERR(scu))
|
|
return PTR_ERR(scu);
|
|
|
|
platform_set_drvdata(pdev, scu);
|
|
return 0;
|
|
}
|
|
|
|
static const struct acpi_device_id intel_scu_acpi_ids[] = {
|
|
{ "INTC1026" },
|
|
{}
|
|
};
|
|
MODULE_DEVICE_TABLE(acpi, intel_scu_acpi_ids);
|
|
|
|
static struct platform_driver intel_scu_platform_driver = {
|
|
.probe = intel_scu_platform_probe,
|
|
.driver = {
|
|
.name = "intel_scu",
|
|
.acpi_match_table = intel_scu_acpi_ids,
|
|
},
|
|
};
|
|
module_platform_driver(intel_scu_platform_driver);
|
|
|
|
MODULE_AUTHOR("Divya Sasidharan <divya.s.sasidharan@intel.com>");
|
|
MODULE_AUTHOR("Mika Westerberg <mika.westerberg@linux.intel.com");
|
|
MODULE_AUTHOR("Rajmohan Mani <rajmohan.mani@intel.com>");
|
|
MODULE_DESCRIPTION("Intel SCU platform driver");
|
|
MODULE_LICENSE("GPL v2");
|