1 /* 2 * Intel LPSS PCI 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/ioport.h> 15 #include <linux/kernel.h> 16 #include <linux/module.h> 17 #include <linux/pci.h> 18 #include <linux/pm.h> 19 #include <linux/pm_runtime.h> 20 21 #include "intel-lpss.h" 22 23 static int intel_lpss_pci_probe(struct pci_dev *pdev, 24 const struct pci_device_id *id) 25 { 26 struct intel_lpss_platform_info *info; 27 int ret; 28 29 ret = pcim_enable_device(pdev); 30 if (ret) 31 return ret; 32 33 info = devm_kmemdup(&pdev->dev, (void *)id->driver_data, sizeof(*info), 34 GFP_KERNEL); 35 if (!info) 36 return -ENOMEM; 37 38 info->mem = &pdev->resource[0]; 39 info->irq = pdev->irq; 40 41 /* Probably it is enough to set this for iDMA capable devices only */ 42 pci_set_master(pdev); 43 44 ret = intel_lpss_probe(&pdev->dev, info); 45 if (ret) 46 return ret; 47 48 pm_runtime_put(&pdev->dev); 49 pm_runtime_allow(&pdev->dev); 50 51 return 0; 52 } 53 54 static void intel_lpss_pci_remove(struct pci_dev *pdev) 55 { 56 pm_runtime_forbid(&pdev->dev); 57 pm_runtime_get_sync(&pdev->dev); 58 59 intel_lpss_remove(&pdev->dev); 60 } 61 62 static INTEL_LPSS_PM_OPS(intel_lpss_pci_pm_ops); 63 64 static const struct intel_lpss_platform_info spt_info = { 65 .clk_rate = 120000000, 66 }; 67 68 static const struct intel_lpss_platform_info spt_uart_info = { 69 .clk_rate = 120000000, 70 .clk_con_id = "baudclk", 71 }; 72 73 static const struct intel_lpss_platform_info bxt_info = { 74 .clk_rate = 100000000, 75 }; 76 77 static const struct intel_lpss_platform_info bxt_uart_info = { 78 .clk_rate = 100000000, 79 .clk_con_id = "baudclk", 80 }; 81 82 static const struct intel_lpss_platform_info bxt_i2c_info = { 83 .clk_rate = 133000000, 84 }; 85 86 static const struct pci_device_id intel_lpss_pci_ids[] = { 87 /* BXT */ 88 { PCI_VDEVICE(INTEL, 0x0aac), (kernel_ulong_t)&bxt_i2c_info }, 89 { PCI_VDEVICE(INTEL, 0x0aae), (kernel_ulong_t)&bxt_i2c_info }, 90 { PCI_VDEVICE(INTEL, 0x0ab0), (kernel_ulong_t)&bxt_i2c_info }, 91 { PCI_VDEVICE(INTEL, 0x0ab2), (kernel_ulong_t)&bxt_i2c_info }, 92 { PCI_VDEVICE(INTEL, 0x0ab4), (kernel_ulong_t)&bxt_i2c_info }, 93 { PCI_VDEVICE(INTEL, 0x0ab6), (kernel_ulong_t)&bxt_i2c_info }, 94 { PCI_VDEVICE(INTEL, 0x0ab8), (kernel_ulong_t)&bxt_i2c_info }, 95 { PCI_VDEVICE(INTEL, 0x0aba), (kernel_ulong_t)&bxt_i2c_info }, 96 { PCI_VDEVICE(INTEL, 0x0abc), (kernel_ulong_t)&bxt_uart_info }, 97 { PCI_VDEVICE(INTEL, 0x0abe), (kernel_ulong_t)&bxt_uart_info }, 98 { PCI_VDEVICE(INTEL, 0x0ac0), (kernel_ulong_t)&bxt_uart_info }, 99 { PCI_VDEVICE(INTEL, 0x0ac2), (kernel_ulong_t)&bxt_info }, 100 { PCI_VDEVICE(INTEL, 0x0ac4), (kernel_ulong_t)&bxt_info }, 101 { PCI_VDEVICE(INTEL, 0x0ac6), (kernel_ulong_t)&bxt_info }, 102 { PCI_VDEVICE(INTEL, 0x0aee), (kernel_ulong_t)&bxt_uart_info }, 103 /* APL */ 104 { PCI_VDEVICE(INTEL, 0x5aac), (kernel_ulong_t)&bxt_i2c_info }, 105 { PCI_VDEVICE(INTEL, 0x5aae), (kernel_ulong_t)&bxt_i2c_info }, 106 { PCI_VDEVICE(INTEL, 0x5ab0), (kernel_ulong_t)&bxt_i2c_info }, 107 { PCI_VDEVICE(INTEL, 0x5ab2), (kernel_ulong_t)&bxt_i2c_info }, 108 { PCI_VDEVICE(INTEL, 0x5ab4), (kernel_ulong_t)&bxt_i2c_info }, 109 { PCI_VDEVICE(INTEL, 0x5ab6), (kernel_ulong_t)&bxt_i2c_info }, 110 { PCI_VDEVICE(INTEL, 0x5ab8), (kernel_ulong_t)&bxt_i2c_info }, 111 { PCI_VDEVICE(INTEL, 0x5aba), (kernel_ulong_t)&bxt_i2c_info }, 112 { PCI_VDEVICE(INTEL, 0x5abc), (kernel_ulong_t)&bxt_uart_info }, 113 { PCI_VDEVICE(INTEL, 0x5abe), (kernel_ulong_t)&bxt_uart_info }, 114 { PCI_VDEVICE(INTEL, 0x5ac0), (kernel_ulong_t)&bxt_uart_info }, 115 { PCI_VDEVICE(INTEL, 0x5ac2), (kernel_ulong_t)&bxt_info }, 116 { PCI_VDEVICE(INTEL, 0x5ac4), (kernel_ulong_t)&bxt_info }, 117 { PCI_VDEVICE(INTEL, 0x5ac6), (kernel_ulong_t)&bxt_info }, 118 { PCI_VDEVICE(INTEL, 0x5aee), (kernel_ulong_t)&bxt_uart_info }, 119 /* SPT-LP */ 120 { PCI_VDEVICE(INTEL, 0x9d27), (kernel_ulong_t)&spt_uart_info }, 121 { PCI_VDEVICE(INTEL, 0x9d28), (kernel_ulong_t)&spt_uart_info }, 122 { PCI_VDEVICE(INTEL, 0x9d29), (kernel_ulong_t)&spt_info }, 123 { PCI_VDEVICE(INTEL, 0x9d2a), (kernel_ulong_t)&spt_info }, 124 { PCI_VDEVICE(INTEL, 0x9d60), (kernel_ulong_t)&spt_info }, 125 { PCI_VDEVICE(INTEL, 0x9d61), (kernel_ulong_t)&spt_info }, 126 { PCI_VDEVICE(INTEL, 0x9d62), (kernel_ulong_t)&spt_info }, 127 { PCI_VDEVICE(INTEL, 0x9d63), (kernel_ulong_t)&spt_info }, 128 { PCI_VDEVICE(INTEL, 0x9d64), (kernel_ulong_t)&spt_info }, 129 { PCI_VDEVICE(INTEL, 0x9d65), (kernel_ulong_t)&spt_info }, 130 { PCI_VDEVICE(INTEL, 0x9d66), (kernel_ulong_t)&spt_uart_info }, 131 /* SPT-H */ 132 { PCI_VDEVICE(INTEL, 0xa127), (kernel_ulong_t)&spt_uart_info }, 133 { PCI_VDEVICE(INTEL, 0xa128), (kernel_ulong_t)&spt_uart_info }, 134 { PCI_VDEVICE(INTEL, 0xa129), (kernel_ulong_t)&spt_info }, 135 { PCI_VDEVICE(INTEL, 0xa12a), (kernel_ulong_t)&spt_info }, 136 { PCI_VDEVICE(INTEL, 0xa160), (kernel_ulong_t)&spt_info }, 137 { PCI_VDEVICE(INTEL, 0xa161), (kernel_ulong_t)&spt_info }, 138 { PCI_VDEVICE(INTEL, 0xa166), (kernel_ulong_t)&spt_uart_info }, 139 { } 140 }; 141 MODULE_DEVICE_TABLE(pci, intel_lpss_pci_ids); 142 143 static struct pci_driver intel_lpss_pci_driver = { 144 .name = "intel-lpss", 145 .id_table = intel_lpss_pci_ids, 146 .probe = intel_lpss_pci_probe, 147 .remove = intel_lpss_pci_remove, 148 .driver = { 149 .pm = &intel_lpss_pci_pm_ops, 150 }, 151 }; 152 153 module_pci_driver(intel_lpss_pci_driver); 154 155 MODULE_AUTHOR("Andy Shevchenko <andriy.shevchenko@linux.intel.com>"); 156 MODULE_AUTHOR("Mika Westerberg <mika.westerberg@linux.intel.com>"); 157 MODULE_DESCRIPTION("Intel LPSS PCI driver"); 158 MODULE_LICENSE("GPL v2"); 159