2 * drivers/ata/pata_palmld.c
4 * Driver for IDE channel in Palm LifeDrive
6 * Based on research of:
7 * Alex Osborne <ato@meshy.org>
9 * Rewrite for mainline:
10 * Marek Vasut <marek.vasut@gmail.com>
12 * Rewritten version based on pata_ixp4xx_cf.c:
13 * ixp4xx PATA/Compact Flash driver
14 * Copyright (C) 2006-07 Tower Technologies
15 * Author: Alessandro Zummo <a.zummo@towertech.it>
17 * This program is free software; you can redistribute it and/or modify
18 * it under the terms of the GNU General Public License version 2 as
19 * published by the Free Software Foundation.
23 #include <linux/kernel.h>
24 #include <linux/module.h>
25 #include <linux/libata.h>
26 #include <linux/irq.h>
27 #include <linux/platform_device.h>
28 #include <linux/delay.h>
29 #include <linux/gpio.h>
31 #include <scsi/scsi_host.h>
32 #include <mach/palmld.h>
34 #define DRV_NAME "pata_palmld"
36 static struct scsi_host_template palmld_sht = {
37 ATA_PIO_SHT(DRV_NAME),
40 static struct ata_port_operations palmld_port_ops = {
41 .inherits = &ata_sff_port_ops,
42 .sff_data_xfer = ata_sff_data_xfer_noirq,
43 .cable_detect = ata_cable_40wire,
46 static __devinit int palmld_pata_probe(struct platform_device *pdev)
48 struct ata_host *host;
54 host = ata_host_alloc(&pdev->dev, 1);
58 /* remap drive's physical memory address */
59 mem = devm_ioremap(&pdev->dev, PALMLD_IDE_PHYS, 0x1000);
63 /* request and activate power GPIO, IRQ GPIO */
64 ret = gpio_request(GPIO_NR_PALMLD_IDE_PWEN, "HDD PWR");
67 ret = gpio_direction_output(GPIO_NR_PALMLD_IDE_PWEN, 1);
71 ret = gpio_request(GPIO_NR_PALMLD_IDE_RESET, "HDD RST");
74 ret = gpio_direction_output(GPIO_NR_PALMLD_IDE_RESET, 0);
79 gpio_set_value(GPIO_NR_PALMLD_IDE_RESET, 0);
81 gpio_set_value(GPIO_NR_PALMLD_IDE_RESET, 1);
84 /* setup the ata port */
86 ap->ops = &palmld_port_ops;
87 ap->pio_mask = ATA_PIO4;
88 ap->flags |= ATA_FLAG_MMIO | ATA_FLAG_NO_LEGACY | ATA_FLAG_PIO_POLLING;
90 /* memory mapping voodoo */
91 ap->ioaddr.cmd_addr = mem + 0x10;
92 ap->ioaddr.altstatus_addr = mem + 0xe;
93 ap->ioaddr.ctl_addr = mem + 0xe;
96 ata_sff_std_ports(&ap->ioaddr);
99 return ata_host_activate(host, 0, NULL, IRQF_TRIGGER_RISING,
103 gpio_free(GPIO_NR_PALMLD_IDE_RESET);
105 gpio_free(GPIO_NR_PALMLD_IDE_PWEN);
110 static __devexit int palmld_pata_remove(struct platform_device *dev)
112 struct ata_host *host = platform_get_drvdata(dev);
114 ata_host_detach(host);
116 /* power down the HDD */
117 gpio_set_value(GPIO_NR_PALMLD_IDE_PWEN, 0);
119 gpio_free(GPIO_NR_PALMLD_IDE_RESET);
120 gpio_free(GPIO_NR_PALMLD_IDE_PWEN);
125 static struct platform_driver palmld_pata_platform_driver = {
128 .owner = THIS_MODULE,
130 .probe = palmld_pata_probe,
131 .remove = __devexit_p(palmld_pata_remove),
134 static int __init palmld_pata_init(void)
136 return platform_driver_register(&palmld_pata_platform_driver);
139 static void __exit palmld_pata_exit(void)
141 platform_driver_unregister(&palmld_pata_platform_driver);
144 MODULE_AUTHOR("Marek Vasut <marek.vasut@gmail.com>");
145 MODULE_DESCRIPTION("PalmLD PATA driver");
146 MODULE_LICENSE("GPL");
147 MODULE_ALIAS("platform:" DRV_NAME);
149 module_init(palmld_pata_init);
150 module_exit(palmld_pata_exit);