forked from Minki/linux
f4d0526603
Since device_add_property_set() now always takes a copy of the property_set, and also since the fwnode type is always hard coded to be FWNODE_PDATA, there is no need for the drivers to deliver the entire struct property_set. The function can just create the instance of it on its own and bind the properties from the drivers to it on the spot. This renames device_add_property_set() to device_add_properties(). The function now takes struct property_entry as its parameter instead of struct property_set. Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Reviewed-by: Mika Westerberg <mika.westerberg@linux.intel.com> Acked-by: Thierry Reding <treding@nvidia.com> Acked-by: Lee Jones <lee.jones@linaro.org> Signed-off-by: Heikki Krogerus <heikki.krogerus@linux.intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
120 lines
3.1 KiB
C
120 lines
3.1 KiB
C
/*
|
|
* Intel LPSS ACPI support.
|
|
*
|
|
* Copyright (C) 2015, Intel Corporation
|
|
*
|
|
* Authors: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
|
|
* Mika Westerberg <mika.westerberg@linux.intel.com>
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License version 2 as
|
|
* published by the Free Software Foundation.
|
|
*/
|
|
|
|
#include <linux/acpi.h>
|
|
#include <linux/ioport.h>
|
|
#include <linux/kernel.h>
|
|
#include <linux/module.h>
|
|
#include <linux/pm.h>
|
|
#include <linux/pm_runtime.h>
|
|
#include <linux/platform_device.h>
|
|
#include <linux/property.h>
|
|
|
|
#include "intel-lpss.h"
|
|
|
|
static const struct intel_lpss_platform_info spt_info = {
|
|
.clk_rate = 120000000,
|
|
};
|
|
|
|
static struct property_entry spt_i2c_properties[] = {
|
|
PROPERTY_ENTRY_U32("i2c-sda-hold-time-ns", 230),
|
|
{ },
|
|
};
|
|
|
|
static const struct intel_lpss_platform_info spt_i2c_info = {
|
|
.clk_rate = 120000000,
|
|
.properties = spt_i2c_properties,
|
|
};
|
|
|
|
static const struct intel_lpss_platform_info bxt_info = {
|
|
.clk_rate = 100000000,
|
|
};
|
|
|
|
static struct property_entry bxt_i2c_properties[] = {
|
|
PROPERTY_ENTRY_U32("i2c-sda-hold-time-ns", 42),
|
|
PROPERTY_ENTRY_U32("i2c-sda-falling-time-ns", 171),
|
|
PROPERTY_ENTRY_U32("i2c-scl-falling-time-ns", 208),
|
|
{ },
|
|
};
|
|
|
|
static const struct intel_lpss_platform_info bxt_i2c_info = {
|
|
.clk_rate = 133000000,
|
|
.properties = bxt_i2c_properties,
|
|
};
|
|
|
|
static const struct acpi_device_id intel_lpss_acpi_ids[] = {
|
|
/* SPT */
|
|
{ "INT3446", (kernel_ulong_t)&spt_i2c_info },
|
|
{ "INT3447", (kernel_ulong_t)&spt_i2c_info },
|
|
/* BXT */
|
|
{ "80860AAC", (kernel_ulong_t)&bxt_i2c_info },
|
|
{ "80860ABC", (kernel_ulong_t)&bxt_info },
|
|
{ "80860AC2", (kernel_ulong_t)&bxt_info },
|
|
/* APL */
|
|
{ "80865AAC", (kernel_ulong_t)&bxt_i2c_info },
|
|
{ "80865ABC", (kernel_ulong_t)&bxt_info },
|
|
{ "80865AC2", (kernel_ulong_t)&bxt_info },
|
|
{ }
|
|
};
|
|
MODULE_DEVICE_TABLE(acpi, intel_lpss_acpi_ids);
|
|
|
|
static int intel_lpss_acpi_probe(struct platform_device *pdev)
|
|
{
|
|
struct intel_lpss_platform_info *info;
|
|
const struct acpi_device_id *id;
|
|
|
|
id = acpi_match_device(intel_lpss_acpi_ids, &pdev->dev);
|
|
if (!id)
|
|
return -ENODEV;
|
|
|
|
info = devm_kmemdup(&pdev->dev, (void *)id->driver_data, sizeof(*info),
|
|
GFP_KERNEL);
|
|
if (!info)
|
|
return -ENOMEM;
|
|
|
|
info->mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
|
|
info->irq = platform_get_irq(pdev, 0);
|
|
|
|
pm_runtime_set_active(&pdev->dev);
|
|
pm_runtime_enable(&pdev->dev);
|
|
|
|
return intel_lpss_probe(&pdev->dev, info);
|
|
}
|
|
|
|
static int intel_lpss_acpi_remove(struct platform_device *pdev)
|
|
{
|
|
intel_lpss_remove(&pdev->dev);
|
|
pm_runtime_disable(&pdev->dev);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static INTEL_LPSS_PM_OPS(intel_lpss_acpi_pm_ops);
|
|
|
|
static struct platform_driver intel_lpss_acpi_driver = {
|
|
.probe = intel_lpss_acpi_probe,
|
|
.remove = intel_lpss_acpi_remove,
|
|
.driver = {
|
|
.name = "intel-lpss",
|
|
.acpi_match_table = intel_lpss_acpi_ids,
|
|
.pm = &intel_lpss_acpi_pm_ops,
|
|
},
|
|
};
|
|
|
|
module_platform_driver(intel_lpss_acpi_driver);
|
|
|
|
MODULE_AUTHOR("Andy Shevchenko <andriy.shevchenko@linux.intel.com>");
|
|
MODULE_AUTHOR("Mika Westerberg <mika.westerberg@linux.intel.com>");
|
|
MODULE_DESCRIPTION("Intel LPSS ACPI driver");
|
|
MODULE_LICENSE("GPL v2");
|