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barebox
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implement resource management for platform devices 

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
This commit is contained in:
Sascha Hauer 2011-12-01 22:15:00 +01:00
parent ec8dd25428
commit 18e845efd9
2 changed files with 28 additions and 7 deletions
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29
drivers/base/driver.c
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@ -214,7 +214,7 @@ int register_driver(struct driver_d *drv)
}
EXPORT_SYMBOL(register_driver);
void __iomem *dev_get_mem_region(struct device_d *dev, int num)
static struct resource *dev_get_resource(struct device_d *dev, int num)
{
int i, n = 0;
@ -222,15 +222,40 @@ void __iomem *dev_get_mem_region(struct device_d *dev, int num)
struct resource *res = &dev->resource[i];
if (resource_type(res) == IORESOURCE_MEM) {
if (n == num)
return (void __force __iomem *)res->start;
return res;
n++;
}
}
return NULL;
}
void __iomem *dev_get_mem_region(struct device_d *dev, int num)
{
struct resource *res;
res = dev_get_resource(dev, num);
if (!res)
return res;
return (void __force __iomem *)res->start;
}
EXPORT_SYMBOL(dev_get_mem_region);
void __iomem *dev_request_mem_region(struct device_d *dev, int num)
{
struct resource *res;
res = dev_get_resource(dev, num);
if (!res)
return NULL;
res = request_iomem_region(dev_name(dev), res->start, res->size);
return (void __force __iomem *)res->start;
}
EXPORT_SYMBOL(dev_request_mem_region);
int dev_protect(struct device_d *dev, size_t count, unsigned long offset, int prot)
{
printf("%s: currently broken\n", __func__);

6
include/driver.h
View File

@ -190,11 +190,7 @@ void __iomem *dev_get_mem_region(struct device_d *dev, int num);
/*
* exlusively request register base 'num' for a device
*/
static inline void __iomem *dev_request_mem_region(struct device_d *dev, int num)
{
/* no resource tracking yet */
return dev_get_mem_region(dev, num);
}
void __iomem *dev_request_mem_region(struct device_d *dev, int num);
/*
* register a generic device