From: Frank Rowand <frank.row...@sonymobile.com>
The previous patch in the series does:
Optionally push device naming into a function called dynamically by
of_device_alloc().
This patch adds an example of using that capability.
Signed-off-by: Frank Rowand <frank.row...@sonymobile.com>
---
drivers/mfd/pm8x41.c | 39 +++++++++++++++++++++++++++++++++++++++
1 file changed, 39 insertions(+)
Index: b/drivers/mfd/pm8x41.c
===================================================================
--- a/drivers/mfd/pm8x41.c
+++ b/drivers/mfd/pm8x41.c
@@ -13,6 +13,7 @@
#include <linux/module.h>
#include <linux/spmi.h>
#include <linux/regmap.h>
+#include <linux/of_address.h>
#include <linux/of_platform.h>
static const struct regmap_config pm8x41_regmap_config = {
@@ -32,6 +33,43 @@ static void pm8x41_remove(struct spmi_de
device_for_each_child(&sdev->dev, NULL, pm8x41_remove_child);
}
+static void spmi_of_device_make_bus_id(struct device *dev)
+{
+ struct device_node *node = dev->of_node;
+ const __be32 *reg;
+ u64 addr;
+ const __be32 *addrp;
+ struct spmi_device *sdev;
+
+ sdev = container_of(dev->parent, struct spmi_device, dev);
+
+ /*
+ * For MMIO, get the physical address
+ */
+ reg = of_get_property(node, "reg", NULL);
+ if (reg) {
+ if (of_can_translate_address(node)) {
+ addr = of_translate_address(node, reg);
+ } else {
+ addrp = of_get_address(node, 0, NULL, NULL);
+ if (addrp)
+ addr = of_read_number(addrp, 1);
+ else
+ addr = OF_BAD_ADDR;
+ }
+ if (addr != OF_BAD_ADDR) {
+ dev_set_name(dev, "%d-%02x:%llx.%s",
+ sdev->ctrl->nr, sdev->usid,
+ (unsigned long long)addr, node->name);
+ return;
+ }
+ }
+
+ dev_set_name(dev, "%d-%02x:%s",
+ sdev->ctrl->nr, sdev->usid,
+ node->name);
+}
+
static int pm8x41_probe(struct spmi_device *sdev)
{
struct regmap *regmap;
@@ -42,6 +80,7 @@ static int pm8x41_probe(struct spmi_devi
return PTR_ERR(regmap);
}
+ sdev->dev.of_node->of_device_make_bus_id = spmi_of_device_make_bus_id;
return of_platform_populate(sdev->dev.of_node, NULL, NULL, &sdev->dev);
}
--
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