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| author | Bin Meng <bmeng.cn@gmail.com> | 2015-09-11 03:24:34 -0700 |
|---|---|---|
| committer | Simon Glass <sjg@chromium.org> | 2015-09-16 19:53:52 -0600 |
| commit | 1e0f226362ffd2bd8c1a238af1d1b21ea86d3111 (patch) | |
| tree | 105e275db286d90bcf54a593536bf3012823f9c6 | |
| parent | fa43ce842c3026c2abf19d4234d02cd4c62eeec0 (diff) | |
| download | u-boot-imx-1e0f226362ffd2bd8c1a238af1d1b21ea86d3111.zip u-boot-imx-1e0f226362ffd2bd8c1a238af1d1b21ea86d3111.tar.gz u-boot-imx-1e0f226362ffd2bd8c1a238af1d1b21ea86d3111.tar.bz2 | |
dm: pci: Add an inline API to test if a device is on a PCI bus
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>
| -rw-r--r-- | drivers/pci/pci-uclass.c | 4 | ||||
| -rw-r--r-- | include/dm/device.h | 11 |
2 files changed, 13 insertions, 2 deletions
diff --git a/drivers/pci/pci-uclass.c b/drivers/pci/pci-uclass.c index ea70853..0756bbe 100644 --- a/drivers/pci/pci-uclass.c +++ b/drivers/pci/pci-uclass.c @@ -238,7 +238,7 @@ int dm_pci_write_config(struct udevice *dev, int offset, unsigned long value, { 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; 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; - for (bus = dev; device_get_uclass_id(bus->parent) == UCLASS_PCI;) + for (bus = dev; device_is_on_pci_bus(bus);) bus = bus->parent; return pci_bus_read_config(bus, pci_get_bdf(dev), offset, valuep, size); diff --git a/include/dm/device.h b/include/dm/device.h index a239be6..8519612 100644 --- a/include/dm/device.h +++ b/include/dm/device.h @@ -485,6 +485,17 @@ bool device_is_last_sibling(struct udevice *dev); */ 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 */ typedef void (*dr_release_t)(struct udevice *dev, void *res); typedef int (*dr_match_t)(struct udevice *dev, void *res, void *match_data); |