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authorGeert Uytterhoeven <geert+renesas@glider.be>2016-06-28 16:10:32 +0200
committerSimon Horman <horms+renesas@verge.net.au>2016-06-29 14:36:51 +0200
commitb1e52287a29cf0673e1a60210d55edccc756e44a (patch)
tree461157b638d65542db6ce5f95003e159eeddf1db /drivers/soc/renesas
parent1023578ec38ec1bae085917134ba985da755503e (diff)
soc: renesas: rcar-sysc: Make rcar_sysc_init() init the PM domains
Let rcar_sysc_init() trigger initialization of the SYSC PM domains from DT if called before the early_initcall. On failure, it falls back to mapping the passed register block, as before. Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
Diffstat (limited to 'drivers/soc/renesas')
-rw-r--r--drivers/soc/renesas/rcar-sysc.c20
1 files changed, 11 insertions, 9 deletions
diff --git a/drivers/soc/renesas/rcar-sysc.c b/drivers/soc/renesas/rcar-sysc.c
index 59a8152681a5..68d6856c9d3c 100644
--- a/drivers/soc/renesas/rcar-sysc.c
+++ b/drivers/soc/renesas/rcar-sysc.c
@@ -164,15 +164,6 @@ static bool rcar_sysc_power_is_off(const struct rcar_sysc_ch *sysc_ch)
return false;
}
-void __iomem *rcar_sysc_init(phys_addr_t base)
-{
- rcar_sysc_base = ioremap_nocache(base, PAGE_SIZE);
- if (!rcar_sysc_base)
- panic("unable to ioremap R-Car SYSC hardware block\n");
-
- return rcar_sysc_base;
-}
-
struct rcar_sysc_pd {
struct generic_pm_domain genpd;
struct rcar_sysc_ch ch;
@@ -328,6 +319,9 @@ static int __init rcar_sysc_pd_init(void)
unsigned int i;
int error;
+ if (rcar_sysc_base)
+ return 0;
+
np = of_find_matching_node_and_match(NULL, rcar_sysc_matches, &match);
if (!np)
return -ENODEV;
@@ -405,3 +399,11 @@ out_put:
return error;
}
early_initcall(rcar_sysc_pd_init);
+
+void __iomem * __init rcar_sysc_init(phys_addr_t base)
+{
+ if (rcar_sysc_pd_init())
+ rcar_sysc_base = ioremap_nocache(base, PAGE_SIZE);
+
+ return rcar_sysc_base;
+}