[linux-2.6-block.git] / drivers / mfd / intel-lpss-acpi.c

// SPDX-License-Identifier: GPL-2.0-only
/*
 * Intel LPSS ACPI support.
 *
 * Copyright (C) 2015, Intel Corporation
 *
 * Authors: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
 *          Mika Westerberg <mika.westerberg@linux.intel.com>
 */

#include <linux/acpi.h>
#include <linux/ioport.h>
#include <linux/kernel.h>
#include <linux/module.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
d2912cb1	1	// SPDX-License-Identifier: GPL-2.0-only
4b45efe8 AS	2	/*
	3	* Intel LPSS ACPI support.
	4	*
	5	* Copyright (C) 2015, Intel Corporation
	6	*
	7	* Authors: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
	8	* Mika Westerberg <mika.westerberg@linux.intel.com>
4b45efe8 AS	9	*/
	10
	11	#include <linux/acpi.h>
	12	#include <linux/ioport.h>
	13	#include <linux/kernel.h>
	14	#include <linux/module.h>
4b45efe8 AS	15	#include <linux/pm_runtime.h>
4b45efe8 AS	16	#include <linux/platform_device.h>
028af594	17	#include <linux/property.h>
4b45efe8 AS	18
	19	#include "intel-lpss.h"
	20
028af594 MW	21	static struct property_entry spt_i2c_properties[] = {
	22	PROPERTY_ENTRY_U32("i2c-sda-hold-time-ns", 230),
	23	{ },
	24	};
	25
028af594 MW	26	static const struct intel_lpss_platform_info spt_i2c_info = {
028af594 MW	27	.clk_rate = 120000000,
f4d05266	28	.properties = spt_i2c_properties,
028af594 MW	29	};
028af594 MW	30
6a636ec0 MW	31	static const struct intel_lpss_platform_info bxt_info = {
	32	.clk_rate = 100000000,
	33	};
	34
0343b2f4 MW	35	static struct property_entry bxt_i2c_properties[] = {
	36	PROPERTY_ENTRY_U32("i2c-sda-hold-time-ns", 42),
	37	PROPERTY_ENTRY_U32("i2c-sda-falling-time-ns", 171),
	38	PROPERTY_ENTRY_U32("i2c-scl-falling-time-ns", 208),
	39	{ },
	40	};
	41
6a636ec0 MW	42	static const struct intel_lpss_platform_info bxt_i2c_info = {
6a636ec0 MW	43	.clk_rate = 133000000,
f4d05266	44	.properties = bxt_i2c_properties,
6a636ec0 MW	45	};
6a636ec0 MW	46
c50cdd62 JN	47	static struct property_entry apl_i2c_properties[] = {
	48	PROPERTY_ENTRY_U32("i2c-sda-hold-time-ns", 207),
	49	PROPERTY_ENTRY_U32("i2c-sda-falling-time-ns", 171),
	50	PROPERTY_ENTRY_U32("i2c-scl-falling-time-ns", 208),
	51	{ },
	52	};
	53
	54	static const struct intel_lpss_platform_info apl_i2c_info = {
	55	.clk_rate = 133000000,
	56	.properties = apl_i2c_properties,
	57	};
	58
4b45efe8 AS	59	static const struct acpi_device_id intel_lpss_acpi_ids[] = {
4b45efe8 AS	60	/* SPT */
028af594 MW	61	{ "INT3446", (kernel_ulong_t)&spt_i2c_info },
028af594 MW	62	{ "INT3447", (kernel_ulong_t)&spt_i2c_info },
6a636ec0 MW	63	/* BXT */
	64	{ "80860AAC", (kernel_ulong_t)&bxt_i2c_info },
	65	{ "80860ABC", (kernel_ulong_t)&bxt_info },
	66	{ "80860AC2", (kernel_ulong_t)&bxt_info },
	67	/* APL */
c50cdd62	68	{ "80865AAC", (kernel_ulong_t)&apl_i2c_info },
6a636ec0 MW	69	{ "80865ABC", (kernel_ulong_t)&bxt_info },
6a636ec0 MW	70	{ "80865AC2", (kernel_ulong_t)&bxt_info },
4b45efe8 AS	71	{ }
	72	};
	73	MODULE_DEVICE_TABLE(acpi, intel_lpss_acpi_ids);
	74
	75	static int intel_lpss_acpi_probe(struct platform_device *pdev)
	76	{
	77	struct intel_lpss_platform_info *info;
	78	const struct acpi_device_id *id;
	79
	80	id = acpi_match_device(intel_lpss_acpi_ids, &pdev->dev);
	81	if (!id)
	82	return -ENODEV;
	83
	84	info = devm_kmemdup(&pdev->dev, (void )id->driver_data, sizeof(info),
	85	GFP_KERNEL);
	86	if (!info)
	87	return -ENOMEM;
	88
	89	info->mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
	90	info->irq = platform_get_irq(pdev, 0);
	91
	92	pm_runtime_set_active(&pdev->dev);
	93	pm_runtime_enable(&pdev->dev);
	94
	95	return intel_lpss_probe(&pdev->dev, info);
	96	}
	97
	98	static int intel_lpss_acpi_remove(struct platform_device *pdev)
	99	{
	100	intel_lpss_remove(&pdev->dev);
	101	pm_runtime_disable(&pdev->dev);
	102
	103	return 0;
	104	}
	105
	106	static INTEL_LPSS_PM_OPS(intel_lpss_acpi_pm_ops);
	107
	108	static struct platform_driver intel_lpss_acpi_driver = {
	109	.probe = intel_lpss_acpi_probe,
	110	.remove = intel_lpss_acpi_remove,
	111	.driver = {
	112	.name = "intel-lpss",
	113	.acpi_match_table = intel_lpss_acpi_ids,
	114	.pm = &intel_lpss_acpi_pm_ops,
	115	},
	116	};
	117
	118	module_platform_driver(intel_lpss_acpi_driver);
	119
	120	MODULE_AUTHOR("Andy Shevchenko <andriy.shevchenko@linux.intel.com>");
	121	MODULE_AUTHOR("Mika Westerberg <mika.westerberg@linux.intel.com>");
	122	MODULE_DESCRIPTION("Intel LPSS ACPI driver");
	123	MODULE_LICENSE("GPL v2");