1/* 2 * AHCI SATA platform driver 3 * 4 * Copyright 2004-2005 Red Hat, Inc. 5 * Jeff Garzik <jgarzik@pobox.com> 6 * Copyright 2010 MontaVista Software, LLC. 7 * Anton Vorontsov <avorontsov@ru.mvista.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 as published by 11 * the Free Software Foundation; either version 2, or (at your option) 12 * any later version. 13 */ 14 15#include <linux/kernel.h> 16#include <linux/module.h> 17#include <linux/pm.h> 18#include <linux/device.h> 19#include <linux/of_device.h> 20#include <linux/platform_device.h> 21#include <linux/libata.h> 22#include <linux/ahci_platform.h> 23#include <linux/acpi.h> 24#include <linux/pci_ids.h> 25#include "ahci.h" 26 27#define DRV_NAME "ahci" 28 29static const struct ata_port_info ahci_port_info = { 30 .flags = AHCI_FLAG_COMMON, 31 .pio_mask = ATA_PIO4, 32 .udma_mask = ATA_UDMA6, 33 .port_ops = &ahci_platform_ops, 34}; 35 36static struct scsi_host_template ahci_platform_sht = { 37 AHCI_SHT(DRV_NAME), 38}; 39 40static int ahci_probe(struct platform_device *pdev) 41{ 42 struct device *dev = &pdev->dev; 43 struct ahci_host_priv *hpriv; 44 int rc; 45 46 hpriv = ahci_platform_get_resources(pdev); 47 if (IS_ERR(hpriv)) 48 return PTR_ERR(hpriv); 49 50 rc = ahci_platform_enable_resources(hpriv); 51 if (rc) 52 return rc; 53 54 of_property_read_u32(dev->of_node, 55 "ports-implemented", &hpriv->force_port_map); 56 57 if (of_device_is_compatible(dev->of_node, "hisilicon,hisi-ahci")) 58 hpriv->flags |= AHCI_HFLAG_NO_FBS | AHCI_HFLAG_NO_NCQ; 59 60 rc = ahci_platform_init_host(pdev, hpriv, &ahci_port_info, 61 &ahci_platform_sht); 62 if (rc) 63 goto disable_resources; 64 65 return 0; 66disable_resources: 67 ahci_platform_disable_resources(hpriv); 68 return rc; 69} 70 71static SIMPLE_DEV_PM_OPS(ahci_pm_ops, ahci_platform_suspend, 72 ahci_platform_resume); 73 74static const struct of_device_id ahci_of_match[] = { 75 { .compatible = "generic-ahci", }, 76 /* Keep the following compatibles for device tree compatibility */ 77 { .compatible = "snps,spear-ahci", }, 78 { .compatible = "snps,exynos5440-ahci", }, 79 { .compatible = "ibm,476gtr-ahci", }, 80 { .compatible = "snps,dwc-ahci", }, 81 { .compatible = "hisilicon,hisi-ahci", }, 82 {}, 83}; 84MODULE_DEVICE_TABLE(of, ahci_of_match); 85 86static const struct acpi_device_id ahci_acpi_match[] = { 87 { ACPI_DEVICE_CLASS(PCI_CLASS_STORAGE_SATA_AHCI, 0xffffff) }, 88 {}, 89}; 90MODULE_DEVICE_TABLE(acpi, ahci_acpi_match); 91 92static struct platform_driver ahci_driver = { 93 .probe = ahci_probe, 94 .remove = ata_platform_remove_one, 95 .driver = { 96 .name = DRV_NAME, 97 .of_match_table = ahci_of_match, 98 .acpi_match_table = ahci_acpi_match, 99 .pm = &ahci_pm_ops, 100 }, 101}; 102module_platform_driver(ahci_driver); 103 104MODULE_DESCRIPTION("AHCI SATA platform driver"); 105MODULE_AUTHOR("Anton Vorontsov <avorontsov@ru.mvista.com>"); 106MODULE_LICENSE("GPL"); 107MODULE_ALIAS("platform:ahci"); 108