1 // SPDX-License-Identifier: GPL-2.0-only
3 * Intel LPSS ACPI support.
5 * Copyright (C) 2015, Intel Corporation
7 * Authors: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
8 * Mika Westerberg <mika.westerberg@linux.intel.com>
11 #include <linux/device.h>
12 #include <linux/gfp_types.h>
13 #include <linux/ioport.h>
14 #include <linux/mod_devicetable.h>
15 #include <linux/module.h>
16 #include <linux/pm_runtime.h>
17 #include <linux/platform_device.h>
18 #include <linux/property.h>
20 #include <linux/pxa2xx_ssp.h>
22 #include <asm/errno.h>
24 #include "intel-lpss.h"
26 static const struct property_entry spt_spi_properties[] = {
27 PROPERTY_ENTRY_U32("intel,spi-pxa2xx-type", LPSS_SPT_SSP),
31 static const struct software_node spt_spi_node = {
32 .properties = spt_spi_properties,
35 static const struct intel_lpss_platform_info spt_info = {
36 .clk_rate = 120000000,
37 .swnode = &spt_spi_node,
40 static const struct property_entry spt_i2c_properties[] = {
41 PROPERTY_ENTRY_U32("i2c-sda-hold-time-ns", 230),
45 static const struct software_node spt_i2c_node = {
46 .properties = spt_i2c_properties,
49 static const struct intel_lpss_platform_info spt_i2c_info = {
50 .clk_rate = 120000000,
51 .swnode = &spt_i2c_node,
54 static const struct property_entry uart_properties[] = {
55 PROPERTY_ENTRY_U32("reg-io-width", 4),
56 PROPERTY_ENTRY_U32("reg-shift", 2),
57 PROPERTY_ENTRY_BOOL("snps,uart-16550-compatible"),
61 static const struct software_node uart_node = {
62 .properties = uart_properties,
65 static const struct intel_lpss_platform_info spt_uart_info = {
66 .clk_rate = 120000000,
67 .clk_con_id = "baudclk",
71 static const struct property_entry bxt_spi_properties[] = {
72 PROPERTY_ENTRY_U32("intel,spi-pxa2xx-type", LPSS_BXT_SSP),
76 static const struct software_node bxt_spi_node = {
77 .properties = bxt_spi_properties,
80 static const struct intel_lpss_platform_info bxt_info = {
81 .clk_rate = 100000000,
82 .swnode = &bxt_spi_node,
85 static const struct property_entry bxt_i2c_properties[] = {
86 PROPERTY_ENTRY_U32("i2c-sda-hold-time-ns", 42),
87 PROPERTY_ENTRY_U32("i2c-sda-falling-time-ns", 171),
88 PROPERTY_ENTRY_U32("i2c-scl-falling-time-ns", 208),
92 static const struct software_node bxt_i2c_node = {
93 .properties = bxt_i2c_properties,
96 static const struct intel_lpss_platform_info bxt_i2c_info = {
97 .clk_rate = 133000000,
98 .swnode = &bxt_i2c_node,
101 static const struct property_entry apl_i2c_properties[] = {
102 PROPERTY_ENTRY_U32("i2c-sda-hold-time-ns", 207),
103 PROPERTY_ENTRY_U32("i2c-sda-falling-time-ns", 171),
104 PROPERTY_ENTRY_U32("i2c-scl-falling-time-ns", 208),
108 static const struct software_node apl_i2c_node = {
109 .properties = apl_i2c_properties,
112 static const struct intel_lpss_platform_info apl_i2c_info = {
113 .clk_rate = 133000000,
114 .swnode = &apl_i2c_node,
117 static const struct property_entry cnl_spi_properties[] = {
118 PROPERTY_ENTRY_U32("intel,spi-pxa2xx-type", LPSS_CNL_SSP),
122 static const struct software_node cnl_spi_node = {
123 .properties = cnl_spi_properties,
126 static const struct intel_lpss_platform_info cnl_info = {
127 .clk_rate = 120000000,
128 .swnode = &cnl_spi_node,
131 static const struct intel_lpss_platform_info cnl_i2c_info = {
132 .clk_rate = 216000000,
133 .swnode = &spt_i2c_node,
136 static const struct acpi_device_id intel_lpss_acpi_ids[] = {
138 { "INT3440", (kernel_ulong_t)&spt_info },
139 { "INT3441", (kernel_ulong_t)&spt_info },
140 { "INT3442", (kernel_ulong_t)&spt_i2c_info },
141 { "INT3443", (kernel_ulong_t)&spt_i2c_info },
142 { "INT3444", (kernel_ulong_t)&spt_i2c_info },
143 { "INT3445", (kernel_ulong_t)&spt_i2c_info },
144 { "INT3446", (kernel_ulong_t)&spt_i2c_info },
145 { "INT3447", (kernel_ulong_t)&spt_i2c_info },
146 { "INT3448", (kernel_ulong_t)&spt_uart_info },
147 { "INT3449", (kernel_ulong_t)&spt_uart_info },
148 { "INT344A", (kernel_ulong_t)&spt_uart_info },
150 { "INT34B0", (kernel_ulong_t)&cnl_info },
151 { "INT34B1", (kernel_ulong_t)&cnl_info },
152 { "INT34B2", (kernel_ulong_t)&cnl_i2c_info },
153 { "INT34B3", (kernel_ulong_t)&cnl_i2c_info },
154 { "INT34B4", (kernel_ulong_t)&cnl_i2c_info },
155 { "INT34B5", (kernel_ulong_t)&cnl_i2c_info },
156 { "INT34B6", (kernel_ulong_t)&cnl_i2c_info },
157 { "INT34B7", (kernel_ulong_t)&cnl_i2c_info },
158 { "INT34B8", (kernel_ulong_t)&spt_uart_info },
159 { "INT34B9", (kernel_ulong_t)&spt_uart_info },
160 { "INT34BA", (kernel_ulong_t)&spt_uart_info },
161 { "INT34BC", (kernel_ulong_t)&cnl_info },
163 { "80860AAC", (kernel_ulong_t)&bxt_i2c_info },
164 { "80860ABC", (kernel_ulong_t)&bxt_info },
165 { "80860AC2", (kernel_ulong_t)&bxt_info },
167 { "80865AAC", (kernel_ulong_t)&apl_i2c_info },
168 { "80865ABC", (kernel_ulong_t)&bxt_info },
169 { "80865AC2", (kernel_ulong_t)&bxt_info },
172 MODULE_DEVICE_TABLE(acpi, intel_lpss_acpi_ids);
174 static int intel_lpss_acpi_probe(struct platform_device *pdev)
176 const struct intel_lpss_platform_info *data;
177 struct intel_lpss_platform_info *info;
180 data = device_get_match_data(&pdev->dev);
184 info = devm_kmemdup(&pdev->dev, data, sizeof(*info), GFP_KERNEL);
188 /* No need to check mem and irq here as intel_lpss_probe() does it for us */
189 info->mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
190 info->irq = platform_get_irq(pdev, 0);
192 ret = intel_lpss_probe(&pdev->dev, info);
196 pm_runtime_set_active(&pdev->dev);
197 pm_runtime_enable(&pdev->dev);
202 static void intel_lpss_acpi_remove(struct platform_device *pdev)
204 intel_lpss_remove(&pdev->dev);
205 pm_runtime_disable(&pdev->dev);
208 static INTEL_LPSS_PM_OPS(intel_lpss_acpi_pm_ops);
210 static struct platform_driver intel_lpss_acpi_driver = {
211 .probe = intel_lpss_acpi_probe,
212 .remove_new = intel_lpss_acpi_remove,
214 .name = "intel-lpss",
215 .acpi_match_table = intel_lpss_acpi_ids,
216 .pm = &intel_lpss_acpi_pm_ops,
220 module_platform_driver(intel_lpss_acpi_driver);
222 MODULE_AUTHOR("Andy Shevchenko <andriy.shevchenko@linux.intel.com>");
223 MODULE_AUTHOR("Mika Westerberg <mika.westerberg@linux.intel.com>");
224 MODULE_DESCRIPTION("Intel LPSS ACPI driver");
225 MODULE_LICENSE("GPL v2");
226 MODULE_IMPORT_NS(INTEL_LPSS);