diff options
| author | Geert Uytterhoeven <geert+renesas@glider.be> | 2017-03-31 11:01:55 +0200 |
|---|---|---|
| committer | Simon Horman <horms+renesas@verge.net.au> | 2017-04-07 13:53:40 -0400 |
| commit | afa6f53df6052968ce3934ad324777c0057e31d1 (patch) | |
| tree | 6f3e35d353e8040ef930cba81892d575d3dfadb8 /drivers/soc/renesas/rcar-sysc.h | |
| parent | b1d134ba9de2b7a136406530e34fc8b110ba6efd (diff) | |
| download | op-kernel-dev-afa6f53df6052968ce3934ad324777c0057e31d1.zip op-kernel-dev-afa6f53df6052968ce3934ad324777c0057e31d1.tar.gz | |
soc: renesas: rcar-sysc: Add support for fixing up power area tables
The same SoC may have different power areas, depending on SoC revision.
One option is to use different sets of power area tables for each SoC
revision. However, if the differences are small, it is much more
space-efficient to have a single set of tables, and fix those up at
runtime instead.
Hence provide a helper to NULLify power areas that do not exist on some
revisions (NULLified power areas are skipped during the registration
phase), and support for an optional initialization callback to e.g. fix
up power area tables.
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/rcar-sysc.h')
| -rw-r--r-- | drivers/soc/renesas/rcar-sysc.h | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/drivers/soc/renesas/rcar-sysc.h b/drivers/soc/renesas/rcar-sysc.h index f6e842e..07edb04 100644 --- a/drivers/soc/renesas/rcar-sysc.h +++ b/drivers/soc/renesas/rcar-sysc.h @@ -46,6 +46,7 @@ struct rcar_sysc_area { */ struct rcar_sysc_info { + int (*init)(void); /* Optional */ const struct rcar_sysc_area *areas; unsigned int num_areas; }; @@ -59,4 +60,13 @@ extern const struct rcar_sysc_info r8a7792_sysc_info; extern const struct rcar_sysc_info r8a7794_sysc_info; extern const struct rcar_sysc_info r8a7795_sysc_info; extern const struct rcar_sysc_info r8a7796_sysc_info; + + + /* + * Helpers for fixing up power area tables depending on SoC revision + */ + +extern void rcar_sysc_nullify(struct rcar_sysc_area *areas, + unsigned int num_areas, u8 id); + #endif /* __SOC_RENESAS_RCAR_SYSC_H__ */ |
