2 * Intel LPSS ACPI support.
4 * Copyright (C) 2015, Intel Corporation
6 * Authors: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
7 * Mika Westerberg <mika.westerberg@linux.intel.com>
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.
14 #include <linux/acpi.h>
15 #include <linux/ioport.h>
16 #include <linux/kernel.h>
17 #include <linux/module.h>
19 #include <linux/pm_runtime.h>
20 #include <linux/platform_device.h>
21 #include <linux/property.h>
23 #include "intel-lpss.h"
25 static const struct intel_lpss_platform_info spt_info = {
26 .clk_rate = 120000000,
29 static struct property_entry spt_i2c_properties[] = {
30 PROPERTY_ENTRY_U32("i2c-sda-hold-time-ns", 230),
34 static const struct intel_lpss_platform_info spt_i2c_info = {
35 .clk_rate = 120000000,
36 .properties = spt_i2c_properties,
39 static const struct intel_lpss_platform_info bxt_info = {
40 .clk_rate = 100000000,
43 static struct property_entry bxt_i2c_properties[] = {
44 PROPERTY_ENTRY_U32("i2c-sda-hold-time-ns", 42),
45 PROPERTY_ENTRY_U32("i2c-sda-falling-time-ns", 171),
46 PROPERTY_ENTRY_U32("i2c-scl-falling-time-ns", 208),
50 static const struct intel_lpss_platform_info bxt_i2c_info = {
51 .clk_rate = 133000000,
52 .properties = bxt_i2c_properties,
55 static struct property_entry apl_i2c_properties[] = {
56 PROPERTY_ENTRY_U32("i2c-sda-hold-time-ns", 207),
57 PROPERTY_ENTRY_U32("i2c-sda-falling-time-ns", 171),
58 PROPERTY_ENTRY_U32("i2c-scl-falling-time-ns", 208),
62 static const struct intel_lpss_platform_info apl_i2c_info = {
63 .clk_rate = 133000000,
64 .properties = apl_i2c_properties,
67 static const struct acpi_device_id intel_lpss_acpi_ids[] = {
69 { "INT3446", (kernel_ulong_t)&spt_i2c_info },
70 { "INT3447", (kernel_ulong_t)&spt_i2c_info },
72 { "80860AAC", (kernel_ulong_t)&bxt_i2c_info },
73 { "80860ABC", (kernel_ulong_t)&bxt_info },
74 { "80860AC2", (kernel_ulong_t)&bxt_info },
76 { "80865AAC", (kernel_ulong_t)&apl_i2c_info },
77 { "80865ABC", (kernel_ulong_t)&bxt_info },
78 { "80865AC2", (kernel_ulong_t)&bxt_info },
81 MODULE_DEVICE_TABLE(acpi, intel_lpss_acpi_ids);
83 static int intel_lpss_acpi_probe(struct platform_device *pdev)
85 struct intel_lpss_platform_info *info;
86 const struct acpi_device_id *id;
89 id = acpi_match_device(intel_lpss_acpi_ids, &pdev->dev);
93 info = devm_kmemdup(&pdev->dev, (void *)id->driver_data, sizeof(*info),
98 info->mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
99 info->irq = platform_get_irq(pdev, 0);
101 ret = intel_lpss_probe(&pdev->dev, info);
105 pm_runtime_set_active(&pdev->dev);
106 pm_runtime_enable(&pdev->dev);
111 static int intel_lpss_acpi_remove(struct platform_device *pdev)
113 intel_lpss_remove(&pdev->dev);
114 pm_runtime_disable(&pdev->dev);
119 static INTEL_LPSS_PM_OPS(intel_lpss_acpi_pm_ops);
121 static struct platform_driver intel_lpss_acpi_driver = {
122 .probe = intel_lpss_acpi_probe,
123 .remove = intel_lpss_acpi_remove,
125 .name = "intel-lpss",
126 .acpi_match_table = intel_lpss_acpi_ids,
127 .pm = &intel_lpss_acpi_pm_ops,
131 module_platform_driver(intel_lpss_acpi_driver);
133 MODULE_AUTHOR("Andy Shevchenko <andriy.shevchenko@linux.intel.com>");
134 MODULE_AUTHOR("Mika Westerberg <mika.westerberg@linux.intel.com>");
135 MODULE_DESCRIPTION("Intel LPSS ACPI driver");
136 MODULE_LICENSE("GPL v2");