[ARM] 5522/1: PalmLD: IDE support
Support for Palm LifeDrive's internal harddrive.
Signed-off-by: Marek Vasut <marek.vasut@gmail.com>
Acked-by: Jeff Garzik <jgarzik@redhat.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
diff --git a/arch/arm/mach-pxa/include/mach/palmld.h b/arch/arm/mach-pxa/include/mach/palmld.h
index fb13c82..8721b80 100644
--- a/arch/arm/mach-pxa/include/mach/palmld.h
+++ b/arch/arm/mach-pxa/include/mach/palmld.h
@@ -56,7 +56,6 @@
#define GPIO_NR_PALMLD_LED_AMBER 94
/* IDE */
-#define GPIO_NR_PALMLD_IDE_IRQ 95
#define GPIO_NR_PALMLD_IDE_RESET 98
#define GPIO_NR_PALMLD_IDE_PWEN 115
diff --git a/arch/arm/mach-pxa/palmld.c b/arch/arm/mach-pxa/palmld.c
index 1cec180..24a967e 100644
--- a/arch/arm/mach-pxa/palmld.c
+++ b/arch/arm/mach-pxa/palmld.c
@@ -127,7 +127,7 @@
GPIO81_GPIO, /* wifi reset */
/* HDD */
- GPIO95_GPIO, /* HDD irq */
+ GPIO98_GPIO, /* HDD reset */
GPIO115_GPIO, /* HDD power */
/* MISC */
@@ -494,6 +494,14 @@
};
/******************************************************************************
+ * HDD
+ ******************************************************************************/
+static struct platform_device palmld_hdd = {
+ .name = "pata_palmld",
+ .id = -1,
+};
+
+/******************************************************************************
* Framebuffer
******************************************************************************/
static struct pxafb_mode_info palmld_lcd_modes[] = {
@@ -557,6 +565,7 @@
&palmld_leds,
&power_supply,
&palmld_asoc,
+ &palmld_hdd,
};
static struct map_desc palmld_io_desc[] __initdata = {
diff --git a/drivers/ata/Kconfig b/drivers/ata/Kconfig
index 9120717..2aa1908 100644
--- a/drivers/ata/Kconfig
+++ b/drivers/ata/Kconfig
@@ -535,6 +535,15 @@
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
tristate "PCMCIA PATA support"
depends on PCMCIA
diff --git a/drivers/ata/Makefile b/drivers/ata/Makefile
index 7f1ecf9..1558059 100644
--- a/drivers/ata/Makefile
+++ b/drivers/ata/Makefile
@@ -50,6 +50,7 @@
obj-$(CONFIG_PATA_MARVELL) += pata_marvell.o
obj-$(CONFIG_PATA_MPIIX) += pata_mpiix.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_PDC2027X) += pata_pdc2027x.o
obj-$(CONFIG_PATA_PDC_OLD) += pata_pdc202xx_old.o
diff --git a/drivers/ata/pata_palmld.c b/drivers/ata/pata_palmld.c
new file mode 100644
index 0000000..11fb4cc
--- /dev/null
+++ b/drivers/ata/pata_palmld.c
@@ -0,0 +1,150 @@
+/*
+ * 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);