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dm: cpu: Add a new get_count method to cpu uclass

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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>
This commit is contained in:
Bin Meng
2015-06-17 11:15:34 +08:00
committed by Simon Glass
parent 4c71322b41
commit 780bfdd3c7
2 changed files with 26 additions and 0 deletions
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10
drivers/cpu/cpu-uclass.c
View File

@@ -32,6 +32,16 @@ int cpu_get_info(struct udevice *dev, struct cpu_info *info)
return ops->get_info(dev, 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) = { U_BOOT_DRIVER(cpu_bus) = {
.name = "cpu_bus", .name = "cpu_bus",
.id = UCLASS_SIMPLE_BUS, .id = UCLASS_SIMPLE_BUS,

16
include/cpu.h
View File

@@ -58,6 +58,14 @@ struct cpu_ops {
* @return 0 if OK, -ve on error * @return 0 if OK, -ve on error
*/ */
int (*get_info)(struct udevice *dev, struct cpu_info *info); 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) #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); 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 #endif