diff options
| author | Bin Meng <bmeng.cn@gmail.com> | 2015-06-17 11:15:34 +0800 |
|---|---|---|
| committer | Simon Glass <sjg@chromium.org> | 2015-07-14 18:03:16 -0600 |
| commit | 780bfdd3c72a058ba24cda0df66ca75f0a7d8b18 (patch) | |
| tree | dd9f729d8aad1da238271df2be85d08c04ff7435 | |
| parent | 4c71322b41a657596ee5e5777393ed83e80139c6 (diff) | |
dm: cpu: Add a new get_count method to cpu uclass
Introduce a new method 'get_count' in the UCLASS_CPU ops to get
the number of CPUs in the system.
Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Acked-by: Simon Glass <sjg@chromium.org>
| -rw-r--r-- | drivers/cpu/cpu-uclass.c | 10 | ||||
| -rw-r--r-- | include/cpu.h | 16 |
2 files changed, 26 insertions, 0 deletions
diff --git a/drivers/cpu/cpu-uclass.c b/drivers/cpu/cpu-uclass.c index d6be9d4dcf5..a2814a8dcf5 100644 --- a/drivers/cpu/cpu-uclass.c +++ b/drivers/cpu/cpu-uclass.c @@ -32,6 +32,16 @@ int cpu_get_info(struct udevice *dev, struct cpu_info *info) return ops->get_info(dev, info); } +int cpu_get_count(struct udevice *dev) +{ + struct cpu_ops *ops = cpu_get_ops(dev); + + if (!ops->get_count) + return -ENOSYS; + + return ops->get_count(dev); +} + U_BOOT_DRIVER(cpu_bus) = { .name = "cpu_bus", .id = UCLASS_SIMPLE_BUS, diff --git a/include/cpu.h b/include/cpu.h index 34c60bcbaa1..bfb0db2e2c6 100644 --- a/include/cpu.h +++ b/include/cpu.h @@ -58,6 +58,14 @@ struct cpu_ops { * @return 0 if OK, -ve on error */ int (*get_info)(struct udevice *dev, struct cpu_info *info); + + /** + * get_count() - Get number of CPUs + * + * @dev: Device to check (UCLASS_CPU) + * @return CPU count if OK, -ve on error + */ + int (*get_count)(struct udevice *dev); }; #define cpu_get_ops(dev) ((struct cpu_ops *)(dev)->driver->ops) @@ -81,4 +89,12 @@ int cpu_get_desc(struct udevice *dev, char *buf, int size); */ int cpu_get_info(struct udevice *dev, struct cpu_info *info); +/** + * cpu_get_count() - Get number of CPUs + * + * @dev: Device to check (UCLASS_CPU) + * @return CPU count if OK, -ve on error + */ +int cpu_get_count(struct udevice *dev); + #endif |