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dm: core: Add a function to read into a unsigned int

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The current dev_read...() functions use s32 and u32 which are convenient
for device tree but not so useful for normal code, which often wants to
use normal integers for values.

Add a helper which supports returning an unsigned int. Also add signed
versions of the unsigned readers.

Signed-off-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Simon Glass
2018-12-10 10:37:37 -07:00
parent d490189865
commit a1b17e4f4c
4 changed files with 118 additions and 0 deletions
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23
drivers/core/read.c
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@@ -21,6 +21,29 @@ int dev_read_u32_default(struct udevice *dev, const char *propname, int def)
return ofnode_read_u32_default(dev_ofnode(dev), propname, def);
}
int dev_read_s32(struct udevice *dev, const char *propname, s32 *outp)
{
return ofnode_read_u32(dev_ofnode(dev), propname, (u32 *)outp);
}
int dev_read_s32_default(struct udevice *dev, const char *propname, int def)
{
return ofnode_read_u32_default(dev_ofnode(dev), propname, def);
}
int dev_read_u32u(struct udevice *dev, const char *propname, uint *outp)
{
u32 val;
int ret;
ret = ofnode_read_u32(dev_ofnode(dev), propname, &val);
if (ret)
return ret;
*outp = val;
return 0;
}
const char *dev_read_string(struct udevice *dev, const char *propname)
{
return ofnode_read_string(dev_ofnode(dev), propname);