1 /* 2 * Intel LPSS ACPI support. 3 * 4 * Copyright (C) 2015, Intel Corporation 5 * 6 * Authors: Andy Shevchenko <andriy.shevchenko@linux.intel.com> 7 * Mika Westerberg <mika.westerberg@linux.intel.com> 8 * 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. 12 */ 13 14 #include <linux/acpi.h> 15 #include <linux/ioport.h> 16 #include <linux/kernel.h> 17 #include <linux/module.h> 18 #include <linux/pm.h> 19 #include <linux/pm_runtime.h> 20 #include <linux/platform_device.h> 21 22 #include "intel-lpss.h" 23 24 static const struct intel_lpss_platform_info spt_info = { 25 .clk_rate = 120000000, 26 }; 27 28 static const struct intel_lpss_platform_info bxt_info = { 29 .clk_rate = 100000000, 30 }; 31 32 static const struct intel_lpss_platform_info bxt_i2c_info = { 33 .clk_rate = 133000000, 34 }; 35 36 static const struct acpi_device_id intel_lpss_acpi_ids[] = { 37 /* SPT */ 38 { "INT3446", (kernel_ulong_t)&spt_info }, 39 { "INT3447", (kernel_ulong_t)&spt_info }, 40 /* BXT */ 41 { "80860AAC", (kernel_ulong_t)&bxt_i2c_info }, 42 { "80860ABC", (kernel_ulong_t)&bxt_info }, 43 { "80860AC2", (kernel_ulong_t)&bxt_info }, 44 /* APL */ 45 { "80865AAC", (kernel_ulong_t)&bxt_i2c_info }, 46 { "80865ABC", (kernel_ulong_t)&bxt_info }, 47 { "80865AC2", (kernel_ulong_t)&bxt_info }, 48 { } 49 }; 50 MODULE_DEVICE_TABLE(acpi, intel_lpss_acpi_ids); 51 52 static int intel_lpss_acpi_probe(struct platform_device *pdev) 53 { 54 struct intel_lpss_platform_info *info; 55 const struct acpi_device_id *id; 56 57 id = acpi_match_device(intel_lpss_acpi_ids, &pdev->dev); 58 if (!id) 59 return -ENODEV; 60 61 info = devm_kmemdup(&pdev->dev, (void *)id->driver_data, sizeof(*info), 62 GFP_KERNEL); 63 if (!info) 64 return -ENOMEM; 65 66 info->mem = platform_get_resource(pdev, IORESOURCE_MEM, 0); 67 info->irq = platform_get_irq(pdev, 0); 68 69 pm_runtime_set_active(&pdev->dev); 70 pm_runtime_enable(&pdev->dev); 71 72 return intel_lpss_probe(&pdev->dev, info); 73 } 74 75 static int intel_lpss_acpi_remove(struct platform_device *pdev) 76 { 77 intel_lpss_remove(&pdev->dev); 78 pm_runtime_disable(&pdev->dev); 79 80 return 0; 81 } 82 83 static INTEL_LPSS_PM_OPS(intel_lpss_acpi_pm_ops); 84 85 static struct platform_driver intel_lpss_acpi_driver = { 86 .probe = intel_lpss_acpi_probe, 87 .remove = intel_lpss_acpi_remove, 88 .driver = { 89 .name = "intel-lpss", 90 .acpi_match_table = intel_lpss_acpi_ids, 91 .pm = &intel_lpss_acpi_pm_ops, 92 }, 93 }; 94 95 module_platform_driver(intel_lpss_acpi_driver); 96 97 MODULE_AUTHOR("Andy Shevchenko <andriy.shevchenko@linux.intel.com>"); 98 MODULE_AUTHOR("Mika Westerberg <mika.westerberg@linux.intel.com>"); 99 MODULE_DESCRIPTION("Intel LPSS ACPI driver"); 100 MODULE_LICENSE("GPL v2"); 101