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| author | Mugunthan V N <mugunthanvnm@ti.com> | 2015-12-23 20:39:36 +0530 |
|---|---|---|
| committer | Jagan Teki <jteki@openedev.com> | 2016-01-13 18:54:22 +0530 |
| commit | 69b41388ba45b853b3538f5b8cac8ab2154d36d8 (patch) | |
| tree | 7a62a20c9c4a2a5e6e4f70762b2518360239961e /drivers | |
| parent | 425846ed8f395ca2371bb17226725c062451186d (diff) | |
| download | u-boot-imx-69b41388ba45b853b3538f5b8cac8ab2154d36d8.zip u-boot-imx-69b41388ba45b853b3538f5b8cac8ab2154d36d8.tar.gz u-boot-imx-69b41388ba45b853b3538f5b8cac8ab2154d36d8.tar.bz2 | |
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.c | 31 |
1 files changed, 27 insertions, 4 deletions
diff --git a/drivers/core/device.c b/drivers/core/device.c index 7a02a93..8c6e6b0 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); |