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mfd: Enable Device Tree for ab8500-core driver

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This patch will allow the ab8500-core driver to be probed and set up
when booting when Device Tree is enabled. This includes platform ID
look-up which identifies the machine it is currently running on. If
we are undergoing a DT enabled boot, we will refuse to setup each of
the other ab8500-* devices, as they will be probed individually by DT.

Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
This commit is contained in:
Lee Jones 2012-05-17 14:45:13 +01:00 committed by Samuel Ortiz
parent d28f1db818
commit 6bc4a56841
1 changed files with 50 additions and 21 deletions
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71
drivers/mfd/ab8500-core.c
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@ -20,6 +20,8 @@
#include <linux/mfd/abx500/ab8500.h>
#include <linux/mfd/dbx500-prcmu.h>
#include <linux/regulator/ab8500.h>
#include <linux/of.h>
#include <linux/of_device.h>
/*
* Interrupt register offsets
@ -1205,11 +1207,20 @@ static struct attribute_group ab9540_attr_group = {
.attrs = ab9540_sysfs_entries,
};
static const struct of_device_id ab8500_match[] = {
{
.compatible = "stericsson,ab8500",
.data = (void *)AB8500_VERSION_AB8500,
},
{},
};
static int __devinit ab8500_probe(struct platform_device *pdev)
{
struct ab8500_platform_data *plat = dev_get_platdata(&pdev->dev);
const struct platform_device_id *platid = platform_get_device_id(pdev);
enum ab8500_version version = platid->driver_data;
enum ab8500_version version = AB8500_VERSION_UNDEFINED;
struct device_node *np = pdev->dev.of_node;
struct ab8500 *ab8500;
struct resource *resource;
int ret;
@ -1222,6 +1233,14 @@ static int __devinit ab8500_probe(struct platform_device *pdev)
if (plat)
ab8500->irq_base = plat->irq_base;
else if (np)
ret = of_property_read_u32(np, "stericsson,irq-base", &ab8500->irq_base);
if (!ab8500->irq_base) {
dev_info(&pdev->dev, "couldn't find irq-base\n");
ret = -EINVAL;
goto out_free_ab8500;
}
ab8500->dev = &pdev->dev;
@ -1243,6 +1262,12 @@ static int __devinit ab8500_probe(struct platform_device *pdev)
platform_set_drvdata(pdev, ab8500);
if (platid)
version = platid->driver_data;
else if (np)
version = (unsigned int)
of_match_device(ab8500_match, &pdev->dev)->data;
if (version != AB8500_VERSION_UNDEFINED)
ab8500->version = version;
else {
@ -1348,29 +1373,32 @@ static int __devinit ab8500_probe(struct platform_device *pdev)
goto out_removeirq;
}
ret = mfd_add_devices(ab8500->dev, 0, abx500_common_devs,
ARRAY_SIZE(abx500_common_devs), NULL,
ab8500->irq_base);
if (!np) {
ret = mfd_add_devices(ab8500->dev, 0, abx500_common_devs,
ARRAY_SIZE(abx500_common_devs), NULL,
ab8500->irq_base);
if (ret)
goto out_freeirq;
if (ret)
goto out_freeirq;
if (is_ab9540(ab8500))
ret = mfd_add_devices(ab8500->dev, 0, ab9540_devs,
ARRAY_SIZE(ab9540_devs), NULL,
ab8500->irq_base);
else
ret = mfd_add_devices(ab8500->dev, 0, ab8500_devs,
ARRAY_SIZE(ab8500_devs), NULL,
ab8500->irq_base);
if (is_ab9540(ab8500))
ret = mfd_add_devices(ab8500->dev, 0, ab9540_devs,
ARRAY_SIZE(ab9540_devs), NULL,
ab8500->irq_base);
else
ret = mfd_add_devices(ab8500->dev, 0, ab8500_devs,
ARRAY_SIZE(ab8500_devs), NULL,
ab8500->irq_base);
if (ret)
goto out_freeirq;
if (is_ab9540(ab8500) || is_ab8505(ab8500))
ret = mfd_add_devices(ab8500->dev, 0, ab9540_ab8505_devs,
ARRAY_SIZE(ab9540_ab8505_devs), NULL,
ab8500->irq_base);
if (ret)
goto out_freeirq;
if (is_ab9540(ab8500) || is_ab8505(ab8500))
ret = mfd_add_devices(ab8500->dev, 0, ab9540_ab8505_devs,
ARRAY_SIZE(ab9540_ab8505_devs), NULL,
ab8500->irq_base);
if (ret)
goto out_freeirq;
}
if (!no_bm) {
/* Add battery management devices */
@ -1440,6 +1468,7 @@ static struct platform_driver ab8500_core_driver = {
.driver = {
.name = "ab8500-core",
.owner = THIS_MODULE,
.of_match_table = ab8500_match,
},
.probe = ab8500_probe,
.remove = __devexit_p(ab8500_remove),