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 acpi_device_id intel_lpss_acpi_ids[] = { 29 /* SPT */ 30 { "INT3446", (kernel_ulong_t)&spt_info }, 31 { "INT3447", (kernel_ulong_t)&spt_info }, 32 { } 33 }; 34 MODULE_DEVICE_TABLE(acpi, intel_lpss_acpi_ids); 35 36 static int intel_lpss_acpi_probe(struct platform_device *pdev) 37 { 38 struct intel_lpss_platform_info *info; 39 const struct acpi_device_id *id; 40 41 id = acpi_match_device(intel_lpss_acpi_ids, &pdev->dev); 42 if (!id) 43 return -ENODEV; 44 45 info = devm_kmemdup(&pdev->dev, (void *)id->driver_data, sizeof(*info), 46 GFP_KERNEL); 47 if (!info) 48 return -ENOMEM; 49 50 info->mem = platform_get_resource(pdev, IORESOURCE_MEM, 0); 51 info->irq = platform_get_irq(pdev, 0); 52 53 pm_runtime_set_active(&pdev->dev); 54 pm_runtime_enable(&pdev->dev); 55 56 return intel_lpss_probe(&pdev->dev, info); 57 } 58 59 static int intel_lpss_acpi_remove(struct platform_device *pdev) 60 { 61 intel_lpss_remove(&pdev->dev); 62 pm_runtime_disable(&pdev->dev); 63 64 return 0; 65 } 66 67 static INTEL_LPSS_PM_OPS(intel_lpss_acpi_pm_ops); 68 69 static struct platform_driver intel_lpss_acpi_driver = { 70 .probe = intel_lpss_acpi_probe, 71 .remove = intel_lpss_acpi_remove, 72 .driver = { 73 .name = "intel-lpss", 74 .acpi_match_table = intel_lpss_acpi_ids, 75 .pm = &intel_lpss_acpi_pm_ops, 76 }, 77 }; 78 79 module_platform_driver(intel_lpss_acpi_driver); 80 81 MODULE_AUTHOR("Andy Shevchenko <andriy.shevchenko@linux.intel.com>"); 82 MODULE_AUTHOR("Mika Westerberg <mika.westerberg@linux.intel.com>"); 83 MODULE_DESCRIPTION("Intel LPSS ACPI driver"); 84 MODULE_LICENSE("GPL v2"); 85