Commit 835d737d authored Mar 12, 2014 by Geert Uytterhoeven Committed by Simon Horman Apr 14, 2014

ARM: shmobile: rcar-gen2: Cache Mode Monitor Register Value



The MD pins are sampled at reset time, hence the read value will always be
the same, and we can avoid the overhead of ioremapping the register on
every read.

Signed-off-by: Geert Uytterhoeven <geert+renesas@linux-m68k.org>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

parent f05b4b52

arch/arm/mach-shmobile/setup-rcar-gen2.c

+10 −6

Original line number	Diff line number	Diff line
		@@ -30,12 +30,16 @@

		u32 rcar_gen2_read_mode_pins(void)
		{
		void __iomem *modemr = ioremap_nocache(MODEMR, 4);
		u32 mode;
		static u32 mode;
		static bool mode_valid;

		if (!mode_valid) {
		void __iomem *modemr = ioremap_nocache(MODEMR, 4);
		BUG_ON(!modemr);
		mode = ioread32(modemr);
		iounmap(modemr);
		mode_valid = true;
		}

		return mode;
		}