leandrof/u-boot
1
0
Fork 1
Code Issues Pull Requests Packages Projects Releases Wiki Activity

dm: pci: Add an inline API to test if a device is on a PCI bus

Browse Source 
Introduce device_is_on_pci_bus() which can be utilized by driver
to test if a device is on a PCI bus.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Acked-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Bin Meng 2015-09-11 03:24:34 -07:00 committed by Simon Glass
parent fa43ce842c
commit 1e0f226362
2 changed files with 13 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
drivers/pci/pci-uclass.c
View File

@ -238,7 +238,7 @@ int dm_pci_write_config(struct udevice *dev, int offset, unsigned long value,
{ {
struct udevice *bus; struct udevice *bus;
for (bus = dev; device_get_uclass_id(bus->parent) == UCLASS_PCI;) for (bus = dev; device_is_on_pci_bus(bus);)
bus = bus->parent; bus = bus->parent;
return pci_bus_write_config(bus, pci_get_bdf(dev), offset, value, size); return pci_bus_write_config(bus, pci_get_bdf(dev), offset, value, size);
} }
@ -303,7 +303,7 @@ int dm_pci_read_config(struct udevice *dev, int offset, unsigned long *valuep,
{ {
struct udevice *bus; struct udevice *bus;
for (bus = dev; device_get_uclass_id(bus->parent) == UCLASS_PCI;) for (bus = dev; device_is_on_pci_bus(bus);)
bus = bus->parent; bus = bus->parent;
return pci_bus_read_config(bus, pci_get_bdf(dev), offset, valuep, return pci_bus_read_config(bus, pci_get_bdf(dev), offset, valuep,
size); size);

11
include/dm/device.h
View File

@ -485,6 +485,17 @@ bool device_is_last_sibling(struct udevice *dev);
*/ */
int device_set_name(struct udevice *dev, const char *name); int device_set_name(struct udevice *dev, const char *name);
/**
* device_is_on_pci_bus - Test if a device is on a PCI bus
*
* @dev: device to test
* @return: true if it is on a PCI bus, false otherwise
*/
static inline bool device_is_on_pci_bus(struct udevice *dev)
{
return device_get_uclass_id(dev->parent) == UCLASS_PCI;
}
/* device resource management */ /* device resource management */
typedef void (*dr_release_t)(struct udevice *dev, void *res); typedef void (*dr_release_t)(struct udevice *dev, void *res);
typedef int (*dr_match_t)(struct udevice *dev, void *res, void *match_data); typedef int (*dr_match_t)(struct udevice *dev, void *res, void *match_data);