Anton Vorontsov | 8cb1f56 | 2007-10-11 23:53:58 +0200 | [diff] [blame] | 1 | /* |
| 2 | * Platform IDE driver |
| 3 | * |
| 4 | * Copyright (C) 2007 MontaVista Software |
| 5 | * |
| 6 | * Maintainer: Kumar Gala <galak@kernel.crashing.org> |
| 7 | * |
| 8 | * This program is free software; you can redistribute it and/or modify it |
| 9 | * under the terms of the GNU General Public License as published by the |
| 10 | * Free Software Foundation; either version 2 of the License, or (at your |
| 11 | * option) any later version. |
| 12 | */ |
| 13 | |
| 14 | #include <linux/types.h> |
| 15 | #include <linux/init.h> |
| 16 | #include <linux/kernel.h> |
| 17 | #include <linux/ide.h> |
| 18 | #include <linux/ioport.h> |
| 19 | #include <linux/module.h> |
Jeff Garzik | 0a87e3e | 2008-02-01 18:02:30 -0500 | [diff] [blame] | 20 | #include <linux/ata_platform.h> |
Anton Vorontsov | 8cb1f56 | 2007-10-11 23:53:58 +0200 | [diff] [blame] | 21 | #include <linux/platform_device.h> |
Thomas Gleixner | 89e9aad | 2011-08-04 01:29:51 -0700 | [diff] [blame] | 22 | #include <linux/interrupt.h> |
Anton Vorontsov | 8cb1f56 | 2007-10-11 23:53:58 +0200 | [diff] [blame] | 23 | #include <linux/io.h> |
| 24 | |
Bartlomiej Zolnierkiewicz | 9f36d31 | 2009-05-17 19:12:25 +0200 | [diff] [blame] | 25 | static void __devinit plat_ide_setup_ports(struct ide_hw *hw, |
Bartlomiej Zolnierkiewicz | 57c802e | 2008-01-26 20:13:05 +0100 | [diff] [blame] | 26 | void __iomem *base, |
| 27 | void __iomem *ctrl, |
| 28 | struct pata_platform_info *pdata, |
| 29 | int irq) |
Anton Vorontsov | 8cb1f56 | 2007-10-11 23:53:58 +0200 | [diff] [blame] | 30 | { |
| 31 | unsigned long port = (unsigned long)base; |
Bartlomiej Zolnierkiewicz | baa8f3e | 2007-10-20 00:32:31 +0200 | [diff] [blame] | 32 | int i; |
Anton Vorontsov | 8cb1f56 | 2007-10-11 23:53:58 +0200 | [diff] [blame] | 33 | |
Bartlomiej Zolnierkiewicz | 4c3032d | 2008-04-27 15:38:32 +0200 | [diff] [blame] | 34 | hw->io_ports.data_addr = port; |
Anton Vorontsov | 8cb1f56 | 2007-10-11 23:53:58 +0200 | [diff] [blame] | 35 | |
| 36 | port += (1 << pdata->ioport_shift); |
Bartlomiej Zolnierkiewicz | 4c3032d | 2008-04-27 15:38:32 +0200 | [diff] [blame] | 37 | for (i = 1; i <= 7; |
Anton Vorontsov | 8cb1f56 | 2007-10-11 23:53:58 +0200 | [diff] [blame] | 38 | i++, port += (1 << pdata->ioport_shift)) |
Bartlomiej Zolnierkiewicz | 4c3032d | 2008-04-27 15:38:32 +0200 | [diff] [blame] | 39 | hw->io_ports_array[i] = port; |
Anton Vorontsov | 8cb1f56 | 2007-10-11 23:53:58 +0200 | [diff] [blame] | 40 | |
Bartlomiej Zolnierkiewicz | 4c3032d | 2008-04-27 15:38:32 +0200 | [diff] [blame] | 41 | hw->io_ports.ctl_addr = (unsigned long)ctrl; |
Anton Vorontsov | 8cb1f56 | 2007-10-11 23:53:58 +0200 | [diff] [blame] | 42 | |
Bartlomiej Zolnierkiewicz | 57c802e | 2008-01-26 20:13:05 +0100 | [diff] [blame] | 43 | hw->irq = irq; |
Anton Vorontsov | 8cb1f56 | 2007-10-11 23:53:58 +0200 | [diff] [blame] | 44 | } |
| 45 | |
Bartlomiej Zolnierkiewicz | 7b60fa1 | 2008-07-16 20:33:42 +0200 | [diff] [blame] | 46 | static const struct ide_port_info platform_ide_port_info = { |
| 47 | .host_flags = IDE_HFLAG_NO_DMA, |
Bartlomiej Zolnierkiewicz | 29e52cf | 2009-05-17 19:12:22 +0200 | [diff] [blame] | 48 | .chipset = ide_generic, |
Bartlomiej Zolnierkiewicz | 7b60fa1 | 2008-07-16 20:33:42 +0200 | [diff] [blame] | 49 | }; |
| 50 | |
Anton Vorontsov | 8cb1f56 | 2007-10-11 23:53:58 +0200 | [diff] [blame] | 51 | static int __devinit plat_ide_probe(struct platform_device *pdev) |
| 52 | { |
| 53 | struct resource *res_base, *res_alt, *res_irq; |
Bartlomiej Zolnierkiewicz | 0424493 | 2008-02-01 23:09:35 +0100 | [diff] [blame] | 54 | void __iomem *base, *alt_base; |
Anton Vorontsov | 8cb1f56 | 2007-10-11 23:53:58 +0200 | [diff] [blame] | 55 | struct pata_platform_info *pdata; |
Bartlomiej Zolnierkiewicz | 48c3c10 | 2008-07-23 19:55:57 +0200 | [diff] [blame] | 56 | struct ide_host *host; |
Bartlomiej Zolnierkiewicz | c97c6ac | 2008-07-23 19:55:50 +0200 | [diff] [blame] | 57 | int ret = 0, mmio = 0; |
Bartlomiej Zolnierkiewicz | 9f36d31 | 2009-05-17 19:12:25 +0200 | [diff] [blame] | 58 | struct ide_hw hw, *hws[] = { &hw }; |
Bartlomiej Zolnierkiewicz | 7b60fa1 | 2008-07-16 20:33:42 +0200 | [diff] [blame] | 59 | struct ide_port_info d = platform_ide_port_info; |
Anton Vorontsov | 8cb1f56 | 2007-10-11 23:53:58 +0200 | [diff] [blame] | 60 | |
| 61 | pdata = pdev->dev.platform_data; |
| 62 | |
| 63 | /* get a pointer to the register memory */ |
| 64 | res_base = platform_get_resource(pdev, IORESOURCE_IO, 0); |
| 65 | res_alt = platform_get_resource(pdev, IORESOURCE_IO, 1); |
| 66 | |
| 67 | if (!res_base || !res_alt) { |
| 68 | res_base = platform_get_resource(pdev, IORESOURCE_MEM, 0); |
| 69 | res_alt = platform_get_resource(pdev, IORESOURCE_MEM, 1); |
| 70 | if (!res_base || !res_alt) { |
| 71 | ret = -ENOMEM; |
| 72 | goto out; |
| 73 | } |
| 74 | mmio = 1; |
| 75 | } |
| 76 | |
| 77 | res_irq = platform_get_resource(pdev, IORESOURCE_IRQ, 0); |
| 78 | if (!res_irq) { |
| 79 | ret = -EINVAL; |
| 80 | goto out; |
| 81 | } |
| 82 | |
| 83 | if (mmio) { |
Bartlomiej Zolnierkiewicz | 0424493 | 2008-02-01 23:09:35 +0100 | [diff] [blame] | 84 | base = devm_ioremap(&pdev->dev, |
H Hartley Sweeten | 30433d8 | 2009-11-23 10:30:34 -0800 | [diff] [blame] | 85 | res_base->start, resource_size(res_base)); |
Bartlomiej Zolnierkiewicz | 0424493 | 2008-02-01 23:09:35 +0100 | [diff] [blame] | 86 | alt_base = devm_ioremap(&pdev->dev, |
H Hartley Sweeten | 30433d8 | 2009-11-23 10:30:34 -0800 | [diff] [blame] | 87 | res_alt->start, resource_size(res_alt)); |
Anton Vorontsov | 8cb1f56 | 2007-10-11 23:53:58 +0200 | [diff] [blame] | 88 | } else { |
Bartlomiej Zolnierkiewicz | 0424493 | 2008-02-01 23:09:35 +0100 | [diff] [blame] | 89 | base = devm_ioport_map(&pdev->dev, |
H Hartley Sweeten | 30433d8 | 2009-11-23 10:30:34 -0800 | [diff] [blame] | 90 | res_base->start, resource_size(res_base)); |
Bartlomiej Zolnierkiewicz | 0424493 | 2008-02-01 23:09:35 +0100 | [diff] [blame] | 91 | alt_base = devm_ioport_map(&pdev->dev, |
H Hartley Sweeten | 30433d8 | 2009-11-23 10:30:34 -0800 | [diff] [blame] | 92 | res_alt->start, resource_size(res_alt)); |
Anton Vorontsov | 8cb1f56 | 2007-10-11 23:53:58 +0200 | [diff] [blame] | 93 | } |
| 94 | |
Bartlomiej Zolnierkiewicz | 57c802e | 2008-01-26 20:13:05 +0100 | [diff] [blame] | 95 | memset(&hw, 0, sizeof(hw)); |
Bartlomiej Zolnierkiewicz | 0424493 | 2008-02-01 23:09:35 +0100 | [diff] [blame] | 96 | plat_ide_setup_ports(&hw, base, alt_base, pdata, res_irq->start); |
Bartlomiej Zolnierkiewicz | 57c802e | 2008-01-26 20:13:05 +0100 | [diff] [blame] | 97 | hw.dev = &pdev->dev; |
| 98 | |
Thomas Gleixner | 89e9aad | 2011-08-04 01:29:51 -0700 | [diff] [blame] | 99 | d.irq_flags = res_irq->flags & IRQF_TRIGGER_MASK; |
| 100 | if (res_irq->flags & IORESOURCE_IRQ_SHAREABLE) |
| 101 | d.irq_flags |= IRQF_SHARED; |
| 102 | |
Bartlomiej Zolnierkiewicz | 761052e | 2008-07-23 19:55:54 +0200 | [diff] [blame] | 103 | if (mmio) |
Bartlomiej Zolnierkiewicz | 7b60fa1 | 2008-07-16 20:33:42 +0200 | [diff] [blame] | 104 | d.host_flags |= IDE_HFLAG_MMIO; |
Bartlomiej Zolnierkiewicz | 57c802e | 2008-01-26 20:13:05 +0100 | [diff] [blame] | 105 | |
Bartlomiej Zolnierkiewicz | dca3983 | 2009-05-17 19:12:24 +0200 | [diff] [blame] | 106 | ret = ide_host_add(&d, hws, 1, &host); |
Bartlomiej Zolnierkiewicz | 6f904d0 | 2008-07-23 19:55:57 +0200 | [diff] [blame] | 107 | if (ret) |
Bartlomiej Zolnierkiewicz | 48c3c10 | 2008-07-23 19:55:57 +0200 | [diff] [blame] | 108 | goto out; |
Anton Vorontsov | 8cb1f56 | 2007-10-11 23:53:58 +0200 | [diff] [blame] | 109 | |
Bartlomiej Zolnierkiewicz | 48c3c10 | 2008-07-23 19:55:57 +0200 | [diff] [blame] | 110 | platform_set_drvdata(pdev, host); |
Anton Vorontsov | 8cb1f56 | 2007-10-11 23:53:58 +0200 | [diff] [blame] | 111 | |
| 112 | return 0; |
| 113 | |
| 114 | out: |
| 115 | return ret; |
| 116 | } |
| 117 | |
| 118 | static int __devexit plat_ide_remove(struct platform_device *pdev) |
| 119 | { |
Greg Kroah-Hartman | fcb5207 | 2009-04-30 14:43:31 -0700 | [diff] [blame] | 120 | struct ide_host *host = dev_get_drvdata(&pdev->dev); |
Anton Vorontsov | 8cb1f56 | 2007-10-11 23:53:58 +0200 | [diff] [blame] | 121 | |
Bartlomiej Zolnierkiewicz | 48c3c10 | 2008-07-23 19:55:57 +0200 | [diff] [blame] | 122 | ide_host_remove(host); |
Anton Vorontsov | 8cb1f56 | 2007-10-11 23:53:58 +0200 | [diff] [blame] | 123 | |
| 124 | return 0; |
| 125 | } |
| 126 | |
| 127 | static struct platform_driver platform_ide_driver = { |
| 128 | .driver = { |
| 129 | .name = "pata_platform", |
Kay Sievers | 458622f | 2008-04-18 13:41:57 -0700 | [diff] [blame] | 130 | .owner = THIS_MODULE, |
Anton Vorontsov | 8cb1f56 | 2007-10-11 23:53:58 +0200 | [diff] [blame] | 131 | }, |
| 132 | .probe = plat_ide_probe, |
| 133 | .remove = __devexit_p(plat_ide_remove), |
| 134 | }; |
| 135 | |
| 136 | static int __init platform_ide_init(void) |
| 137 | { |
| 138 | return platform_driver_register(&platform_ide_driver); |
| 139 | } |
| 140 | |
| 141 | static void __exit platform_ide_exit(void) |
| 142 | { |
| 143 | platform_driver_unregister(&platform_ide_driver); |
| 144 | } |
| 145 | |
| 146 | MODULE_DESCRIPTION("Platform IDE driver"); |
| 147 | MODULE_LICENSE("GPL"); |
Kay Sievers | 458622f | 2008-04-18 13:41:57 -0700 | [diff] [blame] | 148 | MODULE_ALIAS("platform:pata_platform"); |
Anton Vorontsov | 8cb1f56 | 2007-10-11 23:53:58 +0200 | [diff] [blame] | 149 | |
| 150 | module_init(platform_ide_init); |
| 151 | module_exit(platform_ide_exit); |