[mirror_ubuntu-bionic-kernel.git] / drivers / mfd / intel-lpss-acpi.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 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 struct property_entry apl_i2c_properties[] = {
	PROPERTY_ENTRY_U32("i2c-sda-hold-time-ns", 207),
	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 apl_i2c_info = {
	.clk_rate = 133000000,
	.properties = apl_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)&apl_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");
Commit	Line	Data
4b45efe8 AS	1	/*
	2	* Intel LPSS ACPI support.
	3	*
	4	* Copyright (C) 2015, Intel Corporation
	5	*
	6	* Authors: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
	7	* Mika Westerberg <mika.westerberg@linux.intel.com>
	8	*
	9	* This program is free software; you can redistribute it and/or modify
	10	* it under the terms of the GNU General Public License version 2 as
	11	* published by the Free Software Foundation.
	12	*/
	13
	14	#include <linux/acpi.h>
	15	#include <linux/ioport.h>
	16	#include <linux/kernel.h>
	17	#include <linux/module.h>
	18	#include <linux/pm.h>
	19	#include <linux/pm_runtime.h>
	20	#include <linux/platform_device.h>
028af594	21	#include <linux/property.h>
4b45efe8 AS	22
	23	#include "intel-lpss.h"
	24
028af594 MW	25	static struct property_entry spt_i2c_properties[] = {
	26	PROPERTY_ENTRY_U32("i2c-sda-hold-time-ns", 230),
	27	{ },
	28	};
	29
028af594 MW	30	static const struct intel_lpss_platform_info spt_i2c_info = {
028af594 MW	31	.clk_rate = 120000000,
f4d05266	32	.properties = spt_i2c_properties,
028af594 MW	33	};
028af594 MW	34
6a636ec0 MW	35	static const struct intel_lpss_platform_info bxt_info = {
	36	.clk_rate = 100000000,
	37	};
	38
0343b2f4 MW	39	static struct property_entry bxt_i2c_properties[] = {
	40	PROPERTY_ENTRY_U32("i2c-sda-hold-time-ns", 42),
	41	PROPERTY_ENTRY_U32("i2c-sda-falling-time-ns", 171),
	42	PROPERTY_ENTRY_U32("i2c-scl-falling-time-ns", 208),
	43	{ },
	44	};
	45
6a636ec0 MW	46	static const struct intel_lpss_platform_info bxt_i2c_info = {
6a636ec0 MW	47	.clk_rate = 133000000,
f4d05266	48	.properties = bxt_i2c_properties,
6a636ec0 MW	49	};
6a636ec0 MW	50
c50cdd62 JN	51	static struct property_entry apl_i2c_properties[] = {
	52	PROPERTY_ENTRY_U32("i2c-sda-hold-time-ns", 207),
	53	PROPERTY_ENTRY_U32("i2c-sda-falling-time-ns", 171),
	54	PROPERTY_ENTRY_U32("i2c-scl-falling-time-ns", 208),
	55	{ },
	56	};
	57
	58	static const struct intel_lpss_platform_info apl_i2c_info = {
	59	.clk_rate = 133000000,
	60	.properties = apl_i2c_properties,
	61	};
	62
4b45efe8 AS	63	static const struct acpi_device_id intel_lpss_acpi_ids[] = {
4b45efe8 AS	64	/* SPT */
028af594 MW	65	{ "INT3446", (kernel_ulong_t)&spt_i2c_info },
028af594 MW	66	{ "INT3447", (kernel_ulong_t)&spt_i2c_info },
6a636ec0 MW	67	/* BXT */
	68	{ "80860AAC", (kernel_ulong_t)&bxt_i2c_info },
	69	{ "80860ABC", (kernel_ulong_t)&bxt_info },
	70	{ "80860AC2", (kernel_ulong_t)&bxt_info },
	71	/* APL */
c50cdd62	72	{ "80865AAC", (kernel_ulong_t)&apl_i2c_info },
6a636ec0 MW	73	{ "80865ABC", (kernel_ulong_t)&bxt_info },
6a636ec0 MW	74	{ "80865AC2", (kernel_ulong_t)&bxt_info },
4b45efe8 AS	75	{ }
	76	};
	77	MODULE_DEVICE_TABLE(acpi, intel_lpss_acpi_ids);
	78
	79	static int intel_lpss_acpi_probe(struct platform_device *pdev)
	80	{
	81	struct intel_lpss_platform_info *info;
	82	const struct acpi_device_id *id;
	83
	84	id = acpi_match_device(intel_lpss_acpi_ids, &pdev->dev);
	85	if (!id)
	86	return -ENODEV;
	87
	88	info = devm_kmemdup(&pdev->dev, (void )id->driver_data, sizeof(info),
	89	GFP_KERNEL);
	90	if (!info)
	91	return -ENOMEM;
	92
	93	info->mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
	94	info->irq = platform_get_irq(pdev, 0);
	95
	96	pm_runtime_set_active(&pdev->dev);
	97	pm_runtime_enable(&pdev->dev);
	98
	99	return intel_lpss_probe(&pdev->dev, info);
	100	}
	101
	102	static int intel_lpss_acpi_remove(struct platform_device *pdev)
	103	{
	104	intel_lpss_remove(&pdev->dev);
	105	pm_runtime_disable(&pdev->dev);
	106
	107	return 0;
	108	}
	109
	110	static INTEL_LPSS_PM_OPS(intel_lpss_acpi_pm_ops);
	111
	112	static struct platform_driver intel_lpss_acpi_driver = {
	113	.probe = intel_lpss_acpi_probe,
	114	.remove = intel_lpss_acpi_remove,
	115	.driver = {
	116	.name = "intel-lpss",
	117	.acpi_match_table = intel_lpss_acpi_ids,
	118	.pm = &intel_lpss_acpi_pm_ops,
	119	},
	120	};
	121
	122	module_platform_driver(intel_lpss_acpi_driver);
	123
	124	MODULE_AUTHOR("Andy Shevchenko <andriy.shevchenko@linux.intel.com>");
	125	MODULE_AUTHOR("Mika Westerberg <mika.westerberg@linux.intel.com>");
	126	MODULE_DESCRIPTION("Intel LPSS ACPI driver");
	127	MODULE_LICENSE("GPL v2");