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1// SPDX-License-Identifier: GPL-2.0-only
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>
9 */
10
11#include <linux/acpi.h>
12#include <linux/ioport.h>
13#include <linux/kernel.h>
14#include <linux/module.h>
15#include <linux/pm_runtime.h>
16#include <linux/platform_device.h>
17#include <linux/property.h>
18
19#include "intel-lpss.h"
20
21static const struct intel_lpss_platform_info spt_info = {
22 .clk_rate = 120000000,
23};
24
25static struct property_entry spt_i2c_properties[] = {
26 PROPERTY_ENTRY_U32("i2c-sda-hold-time-ns", 230),
27 { },
28};
29
30static const struct intel_lpss_platform_info spt_i2c_info = {
31 .clk_rate = 120000000,
32 .properties = spt_i2c_properties,
33};
34
35static struct property_entry uart_properties[] = {
36 PROPERTY_ENTRY_U32("reg-io-width", 4),
37 PROPERTY_ENTRY_U32("reg-shift", 2),
38 PROPERTY_ENTRY_BOOL("snps,uart-16550-compatible"),
39 { },
40};
41
42static const struct intel_lpss_platform_info spt_uart_info = {
43 .clk_rate = 120000000,
44 .clk_con_id = "baudclk",
45 .properties = uart_properties,
46};
47
48static const struct intel_lpss_platform_info bxt_info = {
49 .clk_rate = 100000000,
50};
51
52static struct property_entry bxt_i2c_properties[] = {
53 PROPERTY_ENTRY_U32("i2c-sda-hold-time-ns", 42),
54 PROPERTY_ENTRY_U32("i2c-sda-falling-time-ns", 171),
55 PROPERTY_ENTRY_U32("i2c-scl-falling-time-ns", 208),
56 { },
57};
58
59static const struct intel_lpss_platform_info bxt_i2c_info = {
60 .clk_rate = 133000000,
61 .properties = bxt_i2c_properties,
62};
63
64static struct property_entry apl_i2c_properties[] = {
65 PROPERTY_ENTRY_U32("i2c-sda-hold-time-ns", 207),
66 PROPERTY_ENTRY_U32("i2c-sda-falling-time-ns", 171),
67 PROPERTY_ENTRY_U32("i2c-scl-falling-time-ns", 208),
68 { },
69};
70
71static const struct intel_lpss_platform_info apl_i2c_info = {
72 .clk_rate = 133000000,
73 .properties = apl_i2c_properties,
74};
75
76static const struct acpi_device_id intel_lpss_acpi_ids[] = {
77 /* SPT */
78 { "INT3440", (kernel_ulong_t)&spt_info },
79 { "INT3441", (kernel_ulong_t)&spt_info },
80 { "INT3442", (kernel_ulong_t)&spt_i2c_info },
81 { "INT3443", (kernel_ulong_t)&spt_i2c_info },
82 { "INT3444", (kernel_ulong_t)&spt_i2c_info },
83 { "INT3445", (kernel_ulong_t)&spt_i2c_info },
84 { "INT3446", (kernel_ulong_t)&spt_i2c_info },
85 { "INT3447", (kernel_ulong_t)&spt_i2c_info },
86 { "INT3448", (kernel_ulong_t)&spt_uart_info },
87 { "INT3449", (kernel_ulong_t)&spt_uart_info },
88 { "INT344A", (kernel_ulong_t)&spt_uart_info },
89 /* BXT */
90 { "80860AAC", (kernel_ulong_t)&bxt_i2c_info },
91 { "80860ABC", (kernel_ulong_t)&bxt_info },
92 { "80860AC2", (kernel_ulong_t)&bxt_info },
93 /* APL */
94 { "80865AAC", (kernel_ulong_t)&apl_i2c_info },
95 { "80865ABC", (kernel_ulong_t)&bxt_info },
96 { "80865AC2", (kernel_ulong_t)&bxt_info },
97 { }
98};
99MODULE_DEVICE_TABLE(acpi, intel_lpss_acpi_ids);
100
101static int intel_lpss_acpi_probe(struct platform_device *pdev)
102{
103 struct intel_lpss_platform_info *info;
104 const struct acpi_device_id *id;
105
106 id = acpi_match_device(intel_lpss_acpi_ids, &pdev->dev);
107 if (!id)
108 return -ENODEV;
109
110 info = devm_kmemdup(&pdev->dev, (void *)id->driver_data, sizeof(*info),
111 GFP_KERNEL);
112 if (!info)
113 return -ENOMEM;
114
115 info->mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
116 info->irq = platform_get_irq(pdev, 0);
117
118 pm_runtime_set_active(&pdev->dev);
119 pm_runtime_enable(&pdev->dev);
120
121 return intel_lpss_probe(&pdev->dev, info);
122}
123
124static int intel_lpss_acpi_remove(struct platform_device *pdev)
125{
126 intel_lpss_remove(&pdev->dev);
127 pm_runtime_disable(&pdev->dev);
128
129 return 0;
130}
131
132static INTEL_LPSS_PM_OPS(intel_lpss_acpi_pm_ops);
133
134static struct platform_driver intel_lpss_acpi_driver = {
135 .probe = intel_lpss_acpi_probe,
136 .remove = intel_lpss_acpi_remove,
137 .driver = {
138 .name = "intel-lpss",
139 .acpi_match_table = intel_lpss_acpi_ids,
140 .pm = &intel_lpss_acpi_pm_ops,
141 },
142};
143
144module_platform_driver(intel_lpss_acpi_driver);
145
146MODULE_AUTHOR("Andy Shevchenko <andriy.shevchenko@linux.intel.com>");
147MODULE_AUTHOR("Mika Westerberg <mika.westerberg@linux.intel.com>");
148MODULE_DESCRIPTION("Intel LPSS ACPI driver");
149MODULE_LICENSE("GPL v2");
1// SPDX-License-Identifier: GPL-2.0-only
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>
9 */
10
11#include <linux/acpi.h>
12#include <linux/ioport.h>
13#include <linux/kernel.h>
14#include <linux/module.h>
15#include <linux/pm_runtime.h>
16#include <linux/platform_device.h>
17#include <linux/property.h>
18
19#include "intel-lpss.h"
20
21static const struct intel_lpss_platform_info spt_info = {
22 .clk_rate = 120000000,
23};
24
25static struct property_entry spt_i2c_properties[] = {
26 PROPERTY_ENTRY_U32("i2c-sda-hold-time-ns", 230),
27 { },
28};
29
30static const struct intel_lpss_platform_info spt_i2c_info = {
31 .clk_rate = 120000000,
32 .properties = spt_i2c_properties,
33};
34
35static struct property_entry uart_properties[] = {
36 PROPERTY_ENTRY_U32("reg-io-width", 4),
37 PROPERTY_ENTRY_U32("reg-shift", 2),
38 PROPERTY_ENTRY_BOOL("snps,uart-16550-compatible"),
39 { },
40};
41
42static const struct intel_lpss_platform_info spt_uart_info = {
43 .clk_rate = 120000000,
44 .clk_con_id = "baudclk",
45 .properties = uart_properties,
46};
47
48static const struct intel_lpss_platform_info bxt_info = {
49 .clk_rate = 100000000,
50};
51
52static struct property_entry bxt_i2c_properties[] = {
53 PROPERTY_ENTRY_U32("i2c-sda-hold-time-ns", 42),
54 PROPERTY_ENTRY_U32("i2c-sda-falling-time-ns", 171),
55 PROPERTY_ENTRY_U32("i2c-scl-falling-time-ns", 208),
56 { },
57};
58
59static const struct intel_lpss_platform_info bxt_i2c_info = {
60 .clk_rate = 133000000,
61 .properties = bxt_i2c_properties,
62};
63
64static struct property_entry apl_i2c_properties[] = {
65 PROPERTY_ENTRY_U32("i2c-sda-hold-time-ns", 207),
66 PROPERTY_ENTRY_U32("i2c-sda-falling-time-ns", 171),
67 PROPERTY_ENTRY_U32("i2c-scl-falling-time-ns", 208),
68 { },
69};
70
71static const struct intel_lpss_platform_info apl_i2c_info = {
72 .clk_rate = 133000000,
73 .properties = apl_i2c_properties,
74};
75
76static const struct acpi_device_id intel_lpss_acpi_ids[] = {
77 /* SPT */
78 { "INT3440", (kernel_ulong_t)&spt_info },
79 { "INT3441", (kernel_ulong_t)&spt_info },
80 { "INT3442", (kernel_ulong_t)&spt_i2c_info },
81 { "INT3443", (kernel_ulong_t)&spt_i2c_info },
82 { "INT3444", (kernel_ulong_t)&spt_i2c_info },
83 { "INT3445", (kernel_ulong_t)&spt_i2c_info },
84 { "INT3446", (kernel_ulong_t)&spt_i2c_info },
85 { "INT3447", (kernel_ulong_t)&spt_i2c_info },
86 { "INT3448", (kernel_ulong_t)&spt_uart_info },
87 { "INT3449", (kernel_ulong_t)&spt_uart_info },
88 { "INT344A", (kernel_ulong_t)&spt_uart_info },
89 /* BXT */
90 { "80860AAC", (kernel_ulong_t)&bxt_i2c_info },
91 { "80860ABC", (kernel_ulong_t)&bxt_info },
92 { "80860AC2", (kernel_ulong_t)&bxt_info },
93 /* APL */
94 { "80865AAC", (kernel_ulong_t)&apl_i2c_info },
95 { "80865ABC", (kernel_ulong_t)&bxt_info },
96 { "80865AC2", (kernel_ulong_t)&bxt_info },
97 { }
98};
99MODULE_DEVICE_TABLE(acpi, intel_lpss_acpi_ids);
100
101static int intel_lpss_acpi_probe(struct platform_device *pdev)
102{
103 struct intel_lpss_platform_info *info;
104 const struct acpi_device_id *id;
105
106 id = acpi_match_device(intel_lpss_acpi_ids, &pdev->dev);
107 if (!id)
108 return -ENODEV;
109
110 info = devm_kmemdup(&pdev->dev, (void *)id->driver_data, sizeof(*info),
111 GFP_KERNEL);
112 if (!info)
113 return -ENOMEM;
114
115 info->mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
116 info->irq = platform_get_irq(pdev, 0);
117
118 pm_runtime_set_active(&pdev->dev);
119 pm_runtime_enable(&pdev->dev);
120
121 return intel_lpss_probe(&pdev->dev, info);
122}
123
124static int intel_lpss_acpi_remove(struct platform_device *pdev)
125{
126 intel_lpss_remove(&pdev->dev);
127 pm_runtime_disable(&pdev->dev);
128
129 return 0;
130}
131
132static INTEL_LPSS_PM_OPS(intel_lpss_acpi_pm_ops);
133
134static struct platform_driver intel_lpss_acpi_driver = {
135 .probe = intel_lpss_acpi_probe,
136 .remove = intel_lpss_acpi_remove,
137 .driver = {
138 .name = "intel-lpss",
139 .acpi_match_table = intel_lpss_acpi_ids,
140 .pm = &intel_lpss_acpi_pm_ops,
141 },
142};
143
144module_platform_driver(intel_lpss_acpi_driver);
145
146MODULE_AUTHOR("Andy Shevchenko <andriy.shevchenko@linux.intel.com>");
147MODULE_AUTHOR("Mika Westerberg <mika.westerberg@linux.intel.com>");
148MODULE_DESCRIPTION("Intel LPSS ACPI driver");
149MODULE_LICENSE("GPL v2");