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powerpc/fsl_soc: improve and simplify get_brgfreq 

Use of_property_read_u32 instead of the generic of_get_property to
simplify the code. In addition move the declaration of brgfreq
into get_brgfreq because it's private to this function.

Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
[scottwood: minor whitespace fixes]
Signed-off-by: Scott Wood <oss@buserror.net>
This commit is contained in:
Heiner Kallweit 2016-10-29 16:28:25 +02:00 committed by Scott Wood
parent 5bda6c0eb7
commit 47a48a9210
1 changed files with 7 additions and 17 deletions
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24
arch/powerpc/sysdev/fsl_soc.c
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@ -100,23 +100,17 @@ EXPORT_SYMBOL(fsl_get_sys_freq);
#if defined(CONFIG_CPM2) || defined(CONFIG_QUICC_ENGINE) || defined(CONFIG_8xx)
static u32 brgfreq = -1;
u32 get_brgfreq(void)
{
static u32 brgfreq = -1;
struct device_node *node;
const unsigned int *prop;
int size;
if (brgfreq != -1)
return brgfreq;
node = of_find_compatible_node(NULL, NULL, "fsl,cpm-brg");
if (node) {
prop = of_get_property(node, "clock-frequency", &size);
if (prop && size == 4)
brgfreq = *prop;
of_property_read_u32(node, "clock-frequency", &brgfreq);
of_node_put(node);
return brgfreq;
}
@ -129,15 +123,11 @@ u32 get_brgfreq(void)
node = of_find_node_by_type(NULL, "qe");
if (node) {
prop = of_get_property(node, "brg-frequency", &size);
if (prop && size == 4)
brgfreq = *prop;
if (brgfreq == -1 || brgfreq == 0) {
prop = of_get_property(node, "bus-frequency", &size);
if (prop && size == 4)
brgfreq = *prop / 2;
}
of_property_read_u32(node, "brg-frequency", &brgfreq);
if (brgfreq == -1 || !brgfreq)
if (!of_property_read_u32(node, "bus-frequency",
&brgfreq))
brgfreq /= 2;
of_node_put(node);
}