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[POWERPC] pasemi: Move electra-ide to pata_of_platform 

Move electra-ide glue over to the new pata_of_platform framework, and
add the quirks needed to that driver.

Signed-off-by: Olof Johansson <olof@lixom.net>
This commit is contained in:
Olof Johansson 2007-12-04 14:44:32 -06:00
parent 61f7162117
commit 9cd55be4d2
5 changed files with 17 additions and 113 deletions
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4
arch/powerpc/configs/pasemi_defconfig
View File

@ -1,7 +1,7 @@
#
# Automatically generated make config: don't edit
# Linux kernel version: 2.6.24-rc6
# Fri Dec 28 11:01:53 2007
# Tue Jan 15 10:26:10 2008
#
CONFIG_PPC64=y
@ -152,7 +152,6 @@ CONFIG_PPC_PASEMI=y
CONFIG_PPC_PASEMI_IOMMU=y
# CONFIG_PPC_PASEMI_IOMMU_DMA_FORCE is not set
CONFIG_PPC_PASEMI_MDIO=y
CONFIG_ELECTRA_IDE=y
# CONFIG_PPC_CELLEB is not set
# CONFIG_PPC_PS3 is not set
# CONFIG_PPC_CELL is not set
@ -663,6 +662,7 @@ CONFIG_PATA_PCMCIA=y
# CONFIG_PATA_VIA is not set
# CONFIG_PATA_WINBOND is not set
CONFIG_PATA_PLATFORM=y
CONFIG_PATA_OF_PLATFORM=y
CONFIG_MD=y
CONFIG_BLK_DEV_MD=y
CONFIG_MD_LINEAR=y

9
arch/powerpc/platforms/pasemi/Kconfig
View File

@ -37,13 +37,4 @@ config PPC_PASEMI_MDIO
help
Driver for MDIO via GPIO on PWRficient platforms
config ELECTRA_IDE
tristate "Electra IDE driver"
default y
depends on PPC_PASEMI && ATA
select PATA_PLATFORM
help
This includes driver support for the Electra on-board IDE
interface.
endmenu

1
arch/powerpc/platforms/pasemi/Makefile
View File

@ -1,4 +1,3 @@
obj-y += setup.o pci.o time.o idle.o powersave.o iommu.o
obj-$(CONFIG_PPC_PASEMI_MDIO) += gpio_mdio.o
obj-$(CONFIG_ELECTRA_IDE) += electra_ide.o
obj-$(CONFIG_PPC_PASEMI_CPUFREQ) += cpufreq.o

96
arch/powerpc/platforms/pasemi/electra_ide.c
View File

@ -1,96 +0,0 @@
/*
* Copyright (C) 2007 PA Semi, Inc
*
* Maintained by: Olof Johansson <olof@lixom.net>
*
* 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.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include <linux/platform_device.h>
#include <asm/prom.h>
#include <asm/system.h>
/* The electra IDE interface is incredibly simple: Just a device on the localbus
* with interrupts hooked up to one of the GPIOs. The device tree contains the
* address window and interrupt mappings already, and the pata_platform driver handles
* the rest. We just need to hook the two up.
*/
#define MAX_IFS 4 /* really, we have only one */
static struct platform_device *pdevs[MAX_IFS];
static int __devinit electra_ide_init(void)
{
struct device_node *np;
struct resource r[3];
int ret = 0;
int i;
np = of_find_compatible_node(NULL, "ide", "electra-ide");
i = 0;
while (np && i < MAX_IFS) {
memset(r, 0, sizeof(r));
/* pata_platform wants two address ranges: one for the base registers,
* another for the control (altstatus). It's located at offset 0x3f6 in
* the window, but the device tree only has one large register window
* that covers both ranges. So we need to split it up by hand here:
*/
ret = of_address_to_resource(np, 0, &r[0]);
if (ret)
goto out;
ret = of_address_to_resource(np, 0, &r[1]);
if (ret)
goto out;
r[1].start += 0x3f6;
r[0].end = r[1].start-1;
r[2].start = irq_of_parse_and_map(np, 0);
r[2].end = irq_of_parse_and_map(np, 0);
r[2].flags = IORESOURCE_IRQ;
pr_debug("registering platform device at 0x%lx/0x%lx, irq is %ld\n",
r[0].start, r[1].start, r[2].start);
pdevs[i] = platform_device_register_simple("pata_platform", i, r, 3);
if (IS_ERR(pdevs[i])) {
ret = PTR_ERR(pdevs[i]);
pdevs[i] = NULL;
goto out;
}
np = of_find_compatible_node(np, "ide", "electra-ide");
}
out:
return ret;
}
module_init(electra_ide_init);
static void __devexit electra_ide_exit(void)
{
int i;
for (i = 0; i < MAX_IFS; i++)
if (pdevs[i])
platform_device_unregister(pdevs[i]);
}
module_exit(electra_ide_exit);
MODULE_LICENSE("GPL");
MODULE_AUTHOR ("Olof Johansson <olof@lixom.net>");
MODULE_DESCRIPTION("PA Semi Electra IDE driver");

20
drivers/ata/pata_of_platform.c
View File

@ -34,11 +34,20 @@ static int __devinit pata_of_platform_probe(struct of_device *ofdev,
return -EINVAL;
}
ret = of_address_to_resource(dn, 1, &ctl_res);
if (ret) {
dev_err(&ofdev->dev, "can't get CTL address from "
"device tree\n");
return -EINVAL;
if (of_device_is_compatible(dn, "electra-ide")) {
/* Altstatus is really at offset 0x3f6 from the primary window
* on electra-ide. Adjust ctl_res and io_res accordingly.
*/
ctl_res = io_res;
ctl_res.start = ctl_res.start+0x3f6;
io_res.end = ctl_res.start-1;
} else {
ret = of_address_to_resource(dn, 1, &ctl_res);
if (ret) {
dev_err(&ofdev->dev, "can't get CTL address from "
"device tree\n");
return -EINVAL;
}
}
ret = of_irq_to_resource(dn, 0, &irq_res);
@ -76,6 +85,7 @@ static int __devexit pata_of_platform_remove(struct of_device *ofdev)
static struct of_device_id pata_of_platform_match[] = {
{ .compatible = "ata-generic", },
{ .compatible = "electra-ide", },
{},
};
MODULE_DEVICE_TABLE(of, pata_of_platform_match);