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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 | /* * 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 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"); |