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Anton Vorontsov1c2a49f2010-03-04 20:06:06 +03001/*
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 Vorontsov1c2a49f2010-03-04 20:06:06 +030016#include <linux/module.h>
Shiraz Hashim18c25ff2012-03-16 15:49:55 +053017#include <linux/pm.h>
Anton Vorontsov1c2a49f2010-03-04 20:06:06 +030018#include <linux/device.h>
Kefeng Wanga1a205d2014-05-14 14:13:42 +080019#include <linux/of_device.h>
Anton Vorontsov1c2a49f2010-03-04 20:06:06 +030020#include <linux/platform_device.h>
21#include <linux/libata.h>
22#include <linux/ahci_platform.h>
23#include "ahci.h"
24
Hans de Goedec093e1d2014-02-22 17:22:54 +010025static 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 Zhu904c04fe2011-09-28 15:41:54 +080030};
31
Hans de Goede23b07d42014-02-22 16:53:34 +010032static 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 Goede23b07d42014-02-22 16:53:34 +010036 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 Wanga1a205d2014-05-14 14:13:42 +080059 if (of_device_is_compatible(dev->of_node, "hisilicon,hisi-ahci"))
Antoine Ténart725c7b52014-07-30 20:13:56 +020060 hpriv->flags |= AHCI_HFLAG_NO_FBS | AHCI_HFLAG_NO_NCQ;
Kefeng Wanga1a205d2014-05-14 14:13:42 +080061
Antoine Ténart725c7b52014-07-30 20:13:56 +020062 rc = ahci_platform_init_host(pdev, hpriv, &ahci_port_info);
Anton Vorontsov1c2a49f2010-03-04 20:06:06 +030063 if (rc)
Viresh Kumarf1e70c22012-08-27 10:37:19 +053064 goto pdata_exit;
Anton Vorontsov1c2a49f2010-03-04 20:06:06 +030065
66 return 0;
Viresh Kumarf1e70c22012-08-27 10:37:19 +053067pdata_exit:
Anton Vorontsov1c2a49f2010-03-04 20:06:06 +030068 if (pdata && pdata->exit)
69 pdata->exit(dev);
Hans de Goede96a01ba2014-02-22 16:53:33 +010070disable_resources:
71 ahci_platform_disable_resources(hpriv);
Anton Vorontsov1c2a49f2010-03-04 20:06:06 +030072 return rc;
73}
74
Hans de Goede648cb6f2014-02-22 16:53:35 +010075static SIMPLE_DEV_PM_OPS(ahci_pm_ops, ahci_platform_suspend,
76 ahci_platform_resume);
Shiraz Hashim18c25ff2012-03-16 15:49:55 +053077
Rob Herring02aac312010-11-03 21:04:59 -050078static const struct of_device_id ahci_of_match[] = {
Antoine Ténart30f3c732014-07-30 20:13:58 +020079 { .compatible = "generic-ahci", },
80 /* Keep the following compatibles for device tree compatibility */
Viresh Kumar5f098a32012-04-21 17:40:12 +053081 { .compatible = "snps,spear-ahci", },
Girish K S1e8f5f72013-04-16 14:58:02 +053082 { .compatible = "snps,exynos5440-ahci", },
Alistair Popple2435dcb2013-11-22 13:08:29 +110083 { .compatible = "ibm,476gtr-ahci", },
Roger Quadrosc4311472014-02-22 16:53:38 +010084 { .compatible = "snps,dwc-ahci", },
Kefeng Wanga1a205d2014-05-14 14:13:42 +080085 { .compatible = "hisilicon,hisi-ahci", },
Rob Herring02aac312010-11-03 21:04:59 -050086 {},
87};
88MODULE_DEVICE_TABLE(of, ahci_of_match);
89
Anton Vorontsov1c2a49f2010-03-04 20:06:06 +030090static struct platform_driver ahci_driver = {
Brian Norris941c77f2012-11-02 00:46:15 -070091 .probe = ahci_probe,
Brian Norris83291d62012-11-02 00:46:19 -070092 .remove = ata_platform_remove_one,
Anton Vorontsov1c2a49f2010-03-04 20:06:06 +030093 .driver = {
94 .name = "ahci",
95 .owner = THIS_MODULE,
Rob Herring02aac312010-11-03 21:04:59 -050096 .of_match_table = ahci_of_match,
Brian Norris17ab5942011-11-18 11:10:10 -080097 .pm = &ahci_pm_ops,
Anton Vorontsov1c2a49f2010-03-04 20:06:06 +030098 },
Anton Vorontsov1c2a49f2010-03-04 20:06:06 +030099};
Brian Norris9a99e472012-11-02 00:46:16 -0700100module_platform_driver(ahci_driver);
Anton Vorontsov1c2a49f2010-03-04 20:06:06 +0300101
102MODULE_DESCRIPTION("AHCI SATA platform driver");
103MODULE_AUTHOR("Anton Vorontsov <avorontsov@ru.mvista.com>");
104MODULE_LICENSE("GPL");
105MODULE_ALIAS("platform:ahci");