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 "ahci.h" 24 25 #define DRV_NAME "ahci" 26 27 static const struct ata_port_info ahci_port_info = { 28 .flags = AHCI_FLAG_COMMON, 29 .pio_mask = ATA_PIO4, 30 .udma_mask = ATA_UDMA6, 31 .port_ops = &ahci_platform_ops, 32 }; 33 34 static struct scsi_host_template ahci_platform_sht = { 35 AHCI_SHT(DRV_NAME), 36 }; 37 38 static int ahci_probe(struct platform_device *pdev) 39 { 40 struct device *dev = &pdev->dev; 41 struct ahci_host_priv *hpriv; 42 int rc; 43 44 hpriv = ahci_platform_get_resources(pdev); 45 if (IS_ERR(hpriv)) 46 return PTR_ERR(hpriv); 47 48 rc = ahci_platform_enable_resources(hpriv); 49 if (rc) 50 return rc; 51 52 if (of_device_is_compatible(dev->of_node, "hisilicon,hisi-ahci")) 53 hpriv->flags |= AHCI_HFLAG_NO_FBS | AHCI_HFLAG_NO_NCQ; 54 55 rc = ahci_platform_init_host(pdev, hpriv, &ahci_port_info, 56 &ahci_platform_sht); 57 if (rc) 58 goto disable_resources; 59 60 return 0; 61 disable_resources: 62 ahci_platform_disable_resources(hpriv); 63 return rc; 64 } 65 66 static SIMPLE_DEV_PM_OPS(ahci_pm_ops, ahci_platform_suspend, 67 ahci_platform_resume); 68 69 static const struct of_device_id ahci_of_match[] = { 70 { .compatible = "generic-ahci", }, 71 /* Keep the following compatibles for device tree compatibility */ 72 { .compatible = "snps,spear-ahci", }, 73 { .compatible = "snps,exynos5440-ahci", }, 74 { .compatible = "ibm,476gtr-ahci", }, 75 { .compatible = "snps,dwc-ahci", }, 76 { .compatible = "hisilicon,hisi-ahci", }, 77 {}, 78 }; 79 MODULE_DEVICE_TABLE(of, ahci_of_match); 80 81 static struct platform_driver ahci_driver = { 82 .probe = ahci_probe, 83 .remove = ata_platform_remove_one, 84 .driver = { 85 .name = DRV_NAME, 86 .of_match_table = ahci_of_match, 87 .pm = &ahci_pm_ops, 88 }, 89 }; 90 module_platform_driver(ahci_driver); 91 92 MODULE_DESCRIPTION("AHCI SATA platform driver"); 93 MODULE_AUTHOR("Anton Vorontsov <avorontsov@ru.mvista.com>"); 94 MODULE_LICENSE("GPL"); 95 MODULE_ALIAS("platform:ahci"); 96