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pata_arasan: add Device Tree probing capability

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SPEAr platforms now support DT and so must convert all drivers to support DT.
This patch adds DT probing support for Arasan Compact Flash controller and
updates its documentation too.

Signed-off-by: Viresh Kumar <viresh.kumar@linaro.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
This commit is contained in:
Viresh Kumar 2012-08-27 10:37:18 +05:30 committed by Jeff Garzik
parent 3f09e6c0d3
commit 26fdaa7453
2 changed files with 27 additions and 0 deletions
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17
Documentation/devicetree/bindings/ata/pata-arasan.txt Normal file
View file

@ -0,0 +1,17 @@
* ARASAN PATA COMPACT FLASH CONTROLLER
Required properties:
- compatible: "arasan,cf-spear1340"
- reg: Address range of the CF registers
- interrupt-parent: Should be the phandle for the interrupt controller
that services interrupts for this device
- interrupt: Should contain the CF interrupt number
Example:
cf@fc000000 {
compatible = "arasan,cf-spear1340";
reg = <0xfc000000 0x1000>;
interrupt-parent = <&vic1>;
interrupts = <12>;
};

10
drivers/ata/pata_arasan_cf.c
View file

@ -31,6 +31,7 @@
#include <linux/kernel.h>
#include <linux/libata.h>
#include <linux/module.h>
#include <linux/of.h>
#include <linux/pata_arasan_cf_data.h>
#include <linux/platform_device.h>
#include <linux/pm.h>
@ -935,6 +936,14 @@ static int arasan_cf_resume(struct device *dev)
static SIMPLE_DEV_PM_OPS(arasan_cf_pm_ops, arasan_cf_suspend, arasan_cf_resume);
#ifdef CONFIG_OF
static const struct of_device_id arasan_cf_id_table[] = {
{ .compatible = "arasan,cf-spear1340" },
{}
};
MODULE_DEVICE_TABLE(of, arasan_cf_id_table);
#endif
static struct platform_driver arasan_cf_driver = {
.probe = arasan_cf_probe,
.remove = __devexit_p(arasan_cf_remove),
@ -942,6 +951,7 @@ static struct platform_driver arasan_cf_driver = {
.name = DRIVER_NAME,
.owner = THIS_MODULE,
.pm = &arasan_cf_pm_ops,
.of_match_table = of_match_ptr(arasan_cf_id_table),
},
};