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Commit 8aca3ab5 authored by Tony Lindgren's avatar Tony Lindgren
Browse files

ARM: OMAP: Warn if omap_ioremap is called before SoC detection 



We don't have cpu_is_omapxxxx SoC detection initialized until
SoC detection is initialized from init_early.

Note that with the common map_io we should no longer need
cpu_is_omapxxxx for ioremap.

Acked-by: default avatarNicolas Pitre <nicolas.pitre@linaro.org>
Signed-off-by: default avatarTony Lindgren <tony@atomide.com>
parent 4c3cf901

arch/arm/mach-omap1/io.c

+1 −0
Original line number Diff line number Diff line
@@ -121,6 +121,7 @@ void __init omap16xx_map_io(void) 
void omap1_init_early(void)

{

	omap_check_revision();

	omap_ioremap_init();



	/* REVISIT: Refer to OMAP5910 Errata, Advisory SYS_1: "Timeout Abort

	 * on a Posted Write in the TIPB Bridge".

arch/arm/mach-omap2/io.c

+1 −0
Original line number Diff line number Diff line
@@ -323,6 +323,7 @@ void __iomem *omap_irq_base; 
static void __init omap_common_init_early(void)

{

	omap2_check_revision();

	omap_ioremap_init();

}



static void __init omap_hwmod_init_postsetup(void)

arch/arm/plat-omap/include/plat/io.h

+2 −0
Original line number Diff line number Diff line
@@ -247,6 +247,8 @@ 
 * NOTE: Please use ioremap + __raw_read/write where possible instead of these

 */



void omap_ioremap_init(void);



extern u8 omap_readb(u32 pa);

extern u16 omap_readw(u32 pa);

extern u32 omap_readl(u32 pa);

arch/arm/plat-omap/io.c

+10 −0
Original line number Diff line number Diff line
@@ -23,11 +23,16 @@ 
#define BETWEEN(p,st,sz)	((p) >= (st) && (p) < ((st) + (sz)))

#define XLATE(p,pst,vst)	((void __iomem *)((p) - (pst) + (vst)))



static int initialized;



/*

 * Intercept ioremap() requests for addresses in our fixed mapping regions.

 */

void __iomem *omap_ioremap(unsigned long p, size_t size, unsigned int type)

{



	WARN(!initialized, "Do not use ioremap before init_early\n");



#ifdef CONFIG_ARCH_OMAP1

	if (cpu_class_is_omap1()) {

		if (BETWEEN(p, OMAP1_IO_PHYS, OMAP1_IO_SIZE))
@@ -139,3 +144,8 @@ void omap_iounmap(volatile void __iomem *addr) 
		__iounmap(addr);

}

EXPORT_SYMBOL(omap_iounmap);



void __init omap_ioremap_init(void)

{

	initialized++;

}