diff options
Diffstat (limited to 'drivers/core/device.c')
| -rw-r--r-- | drivers/core/device.c | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/drivers/core/device.c b/drivers/core/device.c index 86b9ff8911..848ce3b675 100644 --- a/drivers/core/device.c +++ b/drivers/core/device.c @@ -10,6 +10,7 @@ */ #include <common.h> +#include <fdtdec.h> #include <malloc.h> #include <dm/device.h> #include <dm/device-internal.h> @@ -21,6 +22,8 @@ #include <linux/err.h> #include <linux/list.h> +DECLARE_GLOBAL_DATA_PTR; + /** * device_chld_unbind() - Unbind all device's children from the device * @@ -95,6 +98,21 @@ int device_bind(struct udevice *parent, struct driver *drv, const char *name, dev->parent = parent; dev->driver = drv; dev->uclass = uc; + + /* + * For some devices, such as a SPI or I2C bus, the 'reg' property + * is a reasonable indicator of the sequence number. But if there is + * an alias, we use that in preference. In any case, this is just + * a 'requested' sequence, and will be resolved (and ->seq updated) + * when the device is probed. + */ + dev->req_seq = fdtdec_get_int(gd->fdt_blob, of_offset, "reg", -1); + dev->seq = -1; + if (uc->uc_drv->name && of_offset != -1) { + fdtdec_get_alias_seq(gd->fdt_blob, uc->uc_drv->name, of_offset, + &dev->req_seq); + } + if (!dev->platdata && drv->platdata_auto_alloc_size) dev->flags |= DM_FLAG_ALLOC_PDATA; @@ -207,6 +225,7 @@ int device_probe(struct udevice *dev) struct driver *drv; int size = 0; int ret; + int seq; if (!dev) return -EINVAL; @@ -249,6 +268,13 @@ int device_probe(struct udevice *dev) goto fail; } + seq = uclass_resolve_seq(dev); + if (seq < 0) { + ret = seq; + goto fail; + } + dev->seq = seq; + if (drv->ofdata_to_platdata && dev->of_offset >= 0) { ret = drv->ofdata_to_platdata(dev); if (ret) @@ -276,6 +302,7 @@ fail_uclass: __func__, dev->name); } fail: + dev->seq = -1; device_free(dev); return ret; @@ -311,6 +338,7 @@ int device_remove(struct udevice *dev) device_free(dev); + dev->seq = -1; dev->flags &= ~DM_FLAG_ACTIVATED; return 0; |
