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Commit 47a48a92 authored by Heiner Kallweit's avatar Heiner Kallweit Committed by Scott Wood
Browse files

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: default avatarHeiner Kallweit <hkallweit1@gmail.com>
[scottwood: minor whitespace fixes]
Signed-off-by: default avatarScott Wood <oss@buserror.net>
parent 5bda6c0e

arch/powerpc/sysdev/fsl_soc.c

+7 −17
Original line number Diff line number Diff line
@@ -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);

	}