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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 | /* * 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 const struct intel_lpss_platform_info spt_info = { .clk_rate = 120000000, }; 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"); |