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authorMugunthan V N <mugunthanvnm@ti.com>2015-12-23 20:39:36 +0530
committerJagan Teki <jteki@openedev.com>2016-01-13 18:54:22 +0530
commit69b41388ba45b853b3538f5b8cac8ab2154d36d8 (patch)
tree7a62a20c9c4a2a5e6e4f70762b2518360239961e /drivers
parent425846ed8f395ca2371bb17226725c062451186d (diff)
dm: core: Add a new api to get indexed device address
Add new api to get device address based on index. Signed-off-by: Mugunthan V N <mugunthanvnm@ti.com> Acked-by: Jagan Teki <jteki@openedev.com> [Rebased on master] Signed-off-by: Jagan Teki <jteki@openedev.com>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/core/device.c31
1 files changed, 27 insertions, 4 deletions
diff --git a/drivers/core/device.c b/drivers/core/device.c
index 7a02a931ed..8c6e6b067e 100644
--- a/drivers/core/device.c
+++ b/drivers/core/device.c
@@ -581,17 +581,35 @@ const char *dev_get_uclass_name(struct udevice *dev)
return dev->uclass->uc_drv->name;
}
-fdt_addr_t dev_get_addr(struct udevice *dev)
+fdt_addr_t dev_get_addr_index(struct udevice *dev, int index)
{
#if CONFIG_IS_ENABLED(OF_CONTROL)
fdt_addr_t addr;
if (CONFIG_IS_ENABLED(OF_TRANSLATE)) {
const fdt32_t *reg;
+ int len = 0;
+ int na, ns;
- reg = fdt_getprop(gd->fdt_blob, dev->of_offset, "reg", NULL);
- if (!reg)
+ na = fdt_address_cells(gd->fdt_blob, dev->parent->of_offset);
+ if (na < 1) {
+ debug("bad #address-cells\n");
return FDT_ADDR_T_NONE;
+ }
+
+ ns = fdt_size_cells(gd->fdt_blob, dev->parent->of_offset);
+ if (ns < 0) {
+ debug("bad #size-cells\n");
+ return FDT_ADDR_T_NONE;
+ }
+
+ reg = fdt_getprop(gd->fdt_blob, dev->of_offset, "reg", &len);
+ if (!reg || (len <= (index * sizeof(fdt32_t) * (na + ns)))) {
+ debug("Req index out of range\n");
+ return FDT_ADDR_T_NONE;
+ }
+
+ reg += index * (na + ns);
/*
* Use the full-fledged translate function for complex
@@ -607,7 +625,7 @@ fdt_addr_t dev_get_addr(struct udevice *dev)
addr = fdtdec_get_addr_size_auto_parent(gd->fdt_blob,
dev->parent->of_offset,
dev->of_offset, "reg",
- 0, NULL);
+ index, NULL);
if (CONFIG_IS_ENABLED(SIMPLE_BUS) && addr != FDT_ADDR_T_NONE) {
if (device_get_uclass_id(dev->parent) ==
UCLASS_SIMPLE_BUS)
@@ -629,6 +647,11 @@ fdt_addr_t dev_get_addr(struct udevice *dev)
#endif
}
+fdt_addr_t dev_get_addr(struct udevice *dev)
+{
+ return dev_get_addr_index(dev, 0);
+}
+
bool device_has_children(struct udevice *dev)
{
return !list_empty(&dev->child_head);