Anton Vorontsov | 1c2a49f | 2010-03-04 20:06:06 +0300 | [diff] [blame] | 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> |
Anton Vorontsov | 1c2a49f | 2010-03-04 20:06:06 +0300 | [diff] [blame] | 16 | #include <linux/module.h> |
Shiraz Hashim | 18c25ff | 2012-03-16 15:49:55 +0530 | [diff] [blame] | 17 | #include <linux/pm.h> |
Anton Vorontsov | 1c2a49f | 2010-03-04 20:06:06 +0300 | [diff] [blame] | 18 | #include <linux/device.h> |
Kefeng Wang | a1a205d | 2014-05-14 14:13:42 +0800 | [diff] [blame] | 19 | #include <linux/of_device.h> |
Anton Vorontsov | 1c2a49f | 2010-03-04 20:06:06 +0300 | [diff] [blame] | 20 | #include <linux/platform_device.h> |
| 21 | #include <linux/libata.h> |
| 22 | #include <linux/ahci_platform.h> |
| 23 | #include "ahci.h" |
| 24 | |
Hans de Goede | c093e1d | 2014-02-22 17:22:54 +0100 | [diff] [blame] | 25 | static const struct ata_port_info ahci_port_info = { |
| 26 | .flags = AHCI_FLAG_COMMON, |
| 27 | .pio_mask = ATA_PIO4, |
| 28 | .udma_mask = ATA_UDMA6, |
| 29 | .port_ops = &ahci_platform_ops, |
Richard Zhu | 904c04fe | 2011-09-28 15:41:54 +0800 | [diff] [blame] | 30 | }; |
| 31 | |
Hans de Goede | 23b07d4 | 2014-02-22 16:53:34 +0100 | [diff] [blame] | 32 | static int ahci_probe(struct platform_device *pdev) |
| 33 | { |
| 34 | struct device *dev = &pdev->dev; |
| 35 | struct ahci_platform_data *pdata = dev_get_platdata(dev); |
Hans de Goede | 23b07d4 | 2014-02-22 16:53:34 +0100 | [diff] [blame] | 36 | struct ahci_host_priv *hpriv; |
| 37 | int rc; |
| 38 | |
| 39 | hpriv = ahci_platform_get_resources(pdev); |
| 40 | if (IS_ERR(hpriv)) |
| 41 | return PTR_ERR(hpriv); |
| 42 | |
| 43 | rc = ahci_platform_enable_resources(hpriv); |
| 44 | if (rc) |
| 45 | return rc; |
| 46 | |
| 47 | /* |
| 48 | * Some platforms might need to prepare for mmio region access, |
| 49 | * which could be done in the following init call. So, the mmio |
| 50 | * region shouldn't be accessed before init (if provided) has |
| 51 | * returned successfully. |
| 52 | */ |
| 53 | if (pdata && pdata->init) { |
| 54 | rc = pdata->init(dev, hpriv->mmio); |
| 55 | if (rc) |
| 56 | goto disable_resources; |
| 57 | } |
| 58 | |
Kefeng Wang | a1a205d | 2014-05-14 14:13:42 +0800 | [diff] [blame] | 59 | if (of_device_is_compatible(dev->of_node, "hisilicon,hisi-ahci")) |
Antoine Ténart | 725c7b5 | 2014-07-30 20:13:56 +0200 | [diff] [blame] | 60 | hpriv->flags |= AHCI_HFLAG_NO_FBS | AHCI_HFLAG_NO_NCQ; |
Kefeng Wang | a1a205d | 2014-05-14 14:13:42 +0800 | [diff] [blame] | 61 | |
Antoine Ténart | 725c7b5 | 2014-07-30 20:13:56 +0200 | [diff] [blame] | 62 | rc = ahci_platform_init_host(pdev, hpriv, &ahci_port_info); |
Anton Vorontsov | 1c2a49f | 2010-03-04 20:06:06 +0300 | [diff] [blame] | 63 | if (rc) |
Viresh Kumar | f1e70c2 | 2012-08-27 10:37:19 +0530 | [diff] [blame] | 64 | goto pdata_exit; |
Anton Vorontsov | 1c2a49f | 2010-03-04 20:06:06 +0300 | [diff] [blame] | 65 | |
| 66 | return 0; |
Viresh Kumar | f1e70c2 | 2012-08-27 10:37:19 +0530 | [diff] [blame] | 67 | pdata_exit: |
Anton Vorontsov | 1c2a49f | 2010-03-04 20:06:06 +0300 | [diff] [blame] | 68 | if (pdata && pdata->exit) |
| 69 | pdata->exit(dev); |
Hans de Goede | 96a01ba | 2014-02-22 16:53:33 +0100 | [diff] [blame] | 70 | disable_resources: |
| 71 | ahci_platform_disable_resources(hpriv); |
Anton Vorontsov | 1c2a49f | 2010-03-04 20:06:06 +0300 | [diff] [blame] | 72 | return rc; |
| 73 | } |
| 74 | |
Hans de Goede | 648cb6f | 2014-02-22 16:53:35 +0100 | [diff] [blame] | 75 | static SIMPLE_DEV_PM_OPS(ahci_pm_ops, ahci_platform_suspend, |
| 76 | ahci_platform_resume); |
Shiraz Hashim | 18c25ff | 2012-03-16 15:49:55 +0530 | [diff] [blame] | 77 | |
Rob Herring | 02aac31 | 2010-11-03 21:04:59 -0500 | [diff] [blame] | 78 | static const struct of_device_id ahci_of_match[] = { |
Antoine Ténart | 30f3c73 | 2014-07-30 20:13:58 +0200 | [diff] [blame] | 79 | { .compatible = "generic-ahci", }, |
| 80 | /* Keep the following compatibles for device tree compatibility */ |
Viresh Kumar | 5f098a3 | 2012-04-21 17:40:12 +0530 | [diff] [blame] | 81 | { .compatible = "snps,spear-ahci", }, |
Girish K S | 1e8f5f7 | 2013-04-16 14:58:02 +0530 | [diff] [blame] | 82 | { .compatible = "snps,exynos5440-ahci", }, |
Alistair Popple | 2435dcb | 2013-11-22 13:08:29 +1100 | [diff] [blame] | 83 | { .compatible = "ibm,476gtr-ahci", }, |
Roger Quadros | c431147 | 2014-02-22 16:53:38 +0100 | [diff] [blame] | 84 | { .compatible = "snps,dwc-ahci", }, |
Kefeng Wang | a1a205d | 2014-05-14 14:13:42 +0800 | [diff] [blame] | 85 | { .compatible = "hisilicon,hisi-ahci", }, |
Rob Herring | 02aac31 | 2010-11-03 21:04:59 -0500 | [diff] [blame] | 86 | {}, |
| 87 | }; |
| 88 | MODULE_DEVICE_TABLE(of, ahci_of_match); |
| 89 | |
Anton Vorontsov | 1c2a49f | 2010-03-04 20:06:06 +0300 | [diff] [blame] | 90 | static struct platform_driver ahci_driver = { |
Brian Norris | 941c77f | 2012-11-02 00:46:15 -0700 | [diff] [blame] | 91 | .probe = ahci_probe, |
Brian Norris | 83291d6 | 2012-11-02 00:46:19 -0700 | [diff] [blame] | 92 | .remove = ata_platform_remove_one, |
Anton Vorontsov | 1c2a49f | 2010-03-04 20:06:06 +0300 | [diff] [blame] | 93 | .driver = { |
| 94 | .name = "ahci", |
| 95 | .owner = THIS_MODULE, |
Rob Herring | 02aac31 | 2010-11-03 21:04:59 -0500 | [diff] [blame] | 96 | .of_match_table = ahci_of_match, |
Brian Norris | 17ab594 | 2011-11-18 11:10:10 -0800 | [diff] [blame] | 97 | .pm = &ahci_pm_ops, |
Anton Vorontsov | 1c2a49f | 2010-03-04 20:06:06 +0300 | [diff] [blame] | 98 | }, |
Anton Vorontsov | 1c2a49f | 2010-03-04 20:06:06 +0300 | [diff] [blame] | 99 | }; |
Brian Norris | 9a99e47 | 2012-11-02 00:46:16 -0700 | [diff] [blame] | 100 | module_platform_driver(ahci_driver); |
Anton Vorontsov | 1c2a49f | 2010-03-04 20:06:06 +0300 | [diff] [blame] | 101 | |
| 102 | MODULE_DESCRIPTION("AHCI SATA platform driver"); |
| 103 | MODULE_AUTHOR("Anton Vorontsov <avorontsov@ru.mvista.com>"); |
| 104 | MODULE_LICENSE("GPL"); |
| 105 | MODULE_ALIAS("platform:ahci"); |