Commit 5a9d2515 authored by Marek Vašut's avatar Marek Vašut Committed by Russell King

[ARM] 5522/1: PalmLD: IDE support

Support for Palm LifeDrive's internal harddrive.
Signed-off-by: default avatarMarek Vasut <marek.vasut@gmail.com>
Acked-by: default avatarJeff Garzik <jgarzik@redhat.com>
Signed-off-by: default avatarRussell King <rmk+kernel@arm.linux.org.uk>
parent 949abd84
...@@ -56,7 +56,6 @@ ...@@ -56,7 +56,6 @@
#define GPIO_NR_PALMLD_LED_AMBER 94 #define GPIO_NR_PALMLD_LED_AMBER 94
/* IDE */ /* IDE */
#define GPIO_NR_PALMLD_IDE_IRQ 95
#define GPIO_NR_PALMLD_IDE_RESET 98 #define GPIO_NR_PALMLD_IDE_RESET 98
#define GPIO_NR_PALMLD_IDE_PWEN 115 #define GPIO_NR_PALMLD_IDE_PWEN 115
......
...@@ -127,7 +127,7 @@ static unsigned long palmld_pin_config[] __initdata = { ...@@ -127,7 +127,7 @@ static unsigned long palmld_pin_config[] __initdata = {
GPIO81_GPIO, /* wifi reset */ GPIO81_GPIO, /* wifi reset */
/* HDD */ /* HDD */
GPIO95_GPIO, /* HDD irq */ GPIO98_GPIO, /* HDD reset */
GPIO115_GPIO, /* HDD power */ GPIO115_GPIO, /* HDD power */
/* MISC */ /* MISC */
...@@ -493,6 +493,14 @@ static struct platform_device palmld_asoc = { ...@@ -493,6 +493,14 @@ static struct platform_device palmld_asoc = {
}, },
}; };
/******************************************************************************
* HDD
******************************************************************************/
static struct platform_device palmld_hdd = {
.name = "pata_palmld",
.id = -1,
};
/****************************************************************************** /******************************************************************************
* Framebuffer * Framebuffer
******************************************************************************/ ******************************************************************************/
...@@ -557,6 +565,7 @@ static struct platform_device *devices[] __initdata = { ...@@ -557,6 +565,7 @@ static struct platform_device *devices[] __initdata = {
&palmld_leds, &palmld_leds,
&power_supply, &power_supply,
&palmld_asoc, &palmld_asoc,
&palmld_hdd,
}; };
static struct map_desc palmld_io_desc[] __initdata = { static struct map_desc palmld_io_desc[] __initdata = {
......
...@@ -535,6 +535,15 @@ config PATA_OPTIDMA ...@@ -535,6 +535,15 @@ config PATA_OPTIDMA
If unsure, say N. If unsure, say N.
config PATA_PALMLD
tristate "Palm LifeDrive PATA support"
depends on MACH_PALMLD
help
This option enables support for Palm LifeDrive's internal ATA
port via the new ATA layer.
If unsure, say N.
config PATA_PCMCIA config PATA_PCMCIA
tristate "PCMCIA PATA support" tristate "PCMCIA PATA support"
depends on PCMCIA depends on PCMCIA
......
...@@ -50,6 +50,7 @@ obj-$(CONFIG_PATA_MPC52xx) += pata_mpc52xx.o ...@@ -50,6 +50,7 @@ obj-$(CONFIG_PATA_MPC52xx) += pata_mpc52xx.o
obj-$(CONFIG_PATA_MARVELL) += pata_marvell.o obj-$(CONFIG_PATA_MARVELL) += pata_marvell.o
obj-$(CONFIG_PATA_MPIIX) += pata_mpiix.o obj-$(CONFIG_PATA_MPIIX) += pata_mpiix.o
obj-$(CONFIG_PATA_OLDPIIX) += pata_oldpiix.o obj-$(CONFIG_PATA_OLDPIIX) += pata_oldpiix.o
obj-$(CONFIG_PATA_PALMLD) += pata_palmld.o
obj-$(CONFIG_PATA_PCMCIA) += pata_pcmcia.o obj-$(CONFIG_PATA_PCMCIA) += pata_pcmcia.o
obj-$(CONFIG_PATA_PDC2027X) += pata_pdc2027x.o obj-$(CONFIG_PATA_PDC2027X) += pata_pdc2027x.o
obj-$(CONFIG_PATA_PDC_OLD) += pata_pdc202xx_old.o obj-$(CONFIG_PATA_PDC_OLD) += pata_pdc202xx_old.o
......
/*
* drivers/ata/pata_palmld.c
*
* Driver for IDE channel in Palm LifeDrive
*
* Based on research of:
* Alex Osborne <ato@meshy.org>
*
* Rewrite for mainline:
* Marek Vasut <marek.vasut@gmail.com>
*
* Rewritten version based on pata_ixp4xx_cf.c:
* ixp4xx PATA/Compact Flash driver
* Copyright (C) 2006-07 Tower Technologies
* Author: Alessandro Zummo <a.zummo@towertech.it>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
*/
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/libata.h>
#include <linux/irq.h>
#include <linux/platform_device.h>
#include <linux/delay.h>
#include <linux/gpio.h>
#include <scsi/scsi_host.h>
#include <mach/palmld.h>
#define DRV_NAME "pata_palmld"
static struct scsi_host_template palmld_sht = {
ATA_PIO_SHT(DRV_NAME),
};
static struct ata_port_operations palmld_port_ops = {
.inherits = &ata_sff_port_ops,
.sff_data_xfer = ata_sff_data_xfer_noirq,
.cable_detect = ata_cable_40wire,
};
static __devinit int palmld_pata_probe(struct platform_device *pdev)
{
struct ata_host *host;
struct ata_port *ap;
void __iomem *mem;
int ret;
/* allocate host */
host = ata_host_alloc(&pdev->dev, 1);
if (!host)
return -ENOMEM;
/* remap drive's physical memory address */
mem = devm_ioremap(&pdev->dev, PALMLD_IDE_PHYS, 0x1000);
if (!mem)
return -ENOMEM;
/* request and activate power GPIO, IRQ GPIO */
ret = gpio_request(GPIO_NR_PALMLD_IDE_PWEN, "HDD PWR");
if (ret)
goto err1;
ret = gpio_direction_output(GPIO_NR_PALMLD_IDE_PWEN, 1);
if (ret)
goto err2;
ret = gpio_request(GPIO_NR_PALMLD_IDE_RESET, "HDD RST");
if (ret)
goto err2;
ret = gpio_direction_output(GPIO_NR_PALMLD_IDE_RESET, 0);
if (ret)
goto err3;
/* reset the drive */
gpio_set_value(GPIO_NR_PALMLD_IDE_RESET, 0);
msleep(30);
gpio_set_value(GPIO_NR_PALMLD_IDE_RESET, 1);
msleep(30);
/* setup the ata port */
ap = host->ports[0];
ap->ops = &palmld_port_ops;
ap->pio_mask = ATA_PIO4;
ap->flags |= ATA_FLAG_MMIO | ATA_FLAG_NO_LEGACY | ATA_FLAG_PIO_POLLING;
/* memory mapping voodoo */
ap->ioaddr.cmd_addr = mem + 0x10;
ap->ioaddr.altstatus_addr = mem + 0xe;
ap->ioaddr.ctl_addr = mem + 0xe;
/* start the port */
ata_sff_std_ports(&ap->ioaddr);
/* activate host */
return ata_host_activate(host, 0, NULL, IRQF_TRIGGER_RISING,
&palmld_sht);
err3:
gpio_free(GPIO_NR_PALMLD_IDE_RESET);
err2:
gpio_free(GPIO_NR_PALMLD_IDE_PWEN);
err1:
return ret;
}
static __devexit int palmld_pata_remove(struct platform_device *dev)
{
struct ata_host *host = platform_get_drvdata(dev);
ata_host_detach(host);
/* power down the HDD */
gpio_set_value(GPIO_NR_PALMLD_IDE_PWEN, 0);
gpio_free(GPIO_NR_PALMLD_IDE_RESET);
gpio_free(GPIO_NR_PALMLD_IDE_PWEN);
return 0;
}
static struct platform_driver palmld_pata_platform_driver = {
.driver = {
.name = DRV_NAME,
.owner = THIS_MODULE,
},
.probe = palmld_pata_probe,
.remove = __devexit_p(palmld_pata_remove),
};
static int __init palmld_pata_init(void)
{
return platform_driver_register(&palmld_pata_platform_driver);
}
static void __exit palmld_pata_exit(void)
{
platform_driver_unregister(&palmld_pata_platform_driver);
}
MODULE_AUTHOR("Marek Vasut <marek.vasut@gmail.com>");
MODULE_DESCRIPTION("PalmLD PATA driver");
MODULE_LICENSE("GPL");
MODULE_ALIAS("platform:" DRV_NAME);
module_init(palmld_pata_init);
module_exit(palmld_pata_exit);
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