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soc: renesas: rcar-sysc: Move SYSC interrupt config to rcar-sysc driver 

On R-Car H1 and Gen2, the SYSC interrupt registers are always configured
using hardcoded values in platform code. For R-Car Gen2, values are
provided for H2 and M2-W only, other SoCs are not yet supported, and
never will be.

Move this configuration from SoC-specific platform code to the
rcar_sysc_init() wrapper, so it can be skipped if the SYSC is configured
from DT. This would be the case not only for H1, H2, and M2-W using a
modern DTS, but also for other R-Car Gen2 SoCs not supported by the
platform code, relying purely on DT.

There is no longer a need to return the mapped register block, hence
make the function return void.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Ulrich Hecht <ulrich.hecht+renesas@gmail.com>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
This commit is contained in:
Geert Uytterhoeven 2016-06-28 16:10:33 +02:00 committed by Simon Horman
parent b1e52287a2
commit 053239987f
4 changed files with 11 additions and 15 deletions
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6
arch/arm/mach-shmobile/pm-r8a7779.c
View File

@ -23,11 +23,7 @@
static void __init r8a7779_sysc_init(void)
{
void __iomem *base = rcar_sysc_init(0xffd85000);
/* enable all interrupt sources, but do not use interrupt handler */
iowrite32(0x0131000e, base + SYSCIER);
iowrite32(0, base + SYSCIMR);
rcar_sysc_init(0xffd85000, 0x0131000e);
}
#else /* CONFIG_PM || CONFIG_SMP */

6
arch/arm/mach-shmobile/pm-rcar-gen2.c
View File

@ -37,11 +37,7 @@
static void __init rcar_gen2_sysc_init(u32 syscier)
{
void __iomem *base = rcar_sysc_init(0xe6180000);
/* enable all interrupt sources, but do not use interrupt handler */
iowrite32(syscier, base + SYSCIER);
iowrite32(0, base + SYSCIMR);
rcar_sysc_init(0xe6180000, syscier);
}
#else /* CONFIG_SMP */

12
drivers/soc/renesas/rcar-sysc.c
View File

@ -400,10 +400,14 @@ static int __init rcar_sysc_pd_init(void)
}
early_initcall(rcar_sysc_pd_init);
void __iomem * __init rcar_sysc_init(phys_addr_t base)
void __init rcar_sysc_init(phys_addr_t base, u32 syscier)
{
if (rcar_sysc_pd_init())
rcar_sysc_base = ioremap_nocache(base, PAGE_SIZE);
if (!rcar_sysc_pd_init())
return;
return rcar_sysc_base;
rcar_sysc_base = ioremap_nocache(base, PAGE_SIZE);
/* enable all interrupt sources, but do not use interrupt handler */
iowrite32(syscier, rcar_sysc_base + SYSCIER);
iowrite32(0, rcar_sysc_base + SYSCIMR);
}

2
include/linux/soc/renesas/rcar-sysc.h
View File

@ -11,6 +11,6 @@ struct rcar_sysc_ch {
int rcar_sysc_power_down(const struct rcar_sysc_ch *sysc_ch);
int rcar_sysc_power_up(const struct rcar_sysc_ch *sysc_ch);
void __iomem *rcar_sysc_init(phys_addr_t base);
void rcar_sysc_init(phys_addr_t base, u32 syscier);
#endif /* __LINUX_SOC_RENESAS_RCAR_SYSC_H__ */