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@xxxxxxxxxx>
---
drivers/mfd/ab8500-core.c | 62 ++++++++++++++++++++++++++++++++-------------
1 file changed, 45 insertions(+), 17 deletions(-)
diff --git a/drivers/mfd/ab8500-core.c b/drivers/mfd/ab8500-core.c
index 74e6661..9f8547e 100644
--- a/drivers/mfd/ab8500-core.c
+++ b/drivers/mfd/ab8500-core.c
@@ -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
@@ -1039,11 +1041,20 @@ 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;
@@ -1056,6 +1067,14 @@ 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 == 0) {
+ dev_info(&pdev->dev, "couldn't find irq-base\n");
+ ret = -EINVAL;
+ goto out_free_ab8500;
+ }
ab8500->dev = &pdev->dev;
@@ -1076,6 +1095,12 @@ 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 {
@@ -1172,23 +1197,25 @@ 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 (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(ab9540_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(ab9540_devs), NULL,
+ ab8500->irq_base);
+ if (ret)
+ goto out_freeirq;
+ }
if (is_ab9540(ab8500))
ret = sysfs_create_group(&ab8500->dev->kobj,
@@ -1249,6 +1276,7 @@ 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),
--
1.7.9.5
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