Commit 4f5bc54d authored by Geert Uytterhoeven's avatar Geert Uytterhoeven
Browse files

soc: renesas: rcar-sysc: Optimize rcar_sysc_area struct sizes 



Reduce the sizes of the rcar_sysc_area and rcar_gen4_sysc_area
structures:
  - parent is in the range [-1..32] or [-1..64], so s8 is sufficient,
  - flags needs just 3 bits (for now), so u8 is plenty.

This reduces kernel size by:
  - 288 bytes for an R-Car Gen1+Gen2 kernel (arm32),
  - 1772 bytes for an R-Car Gen3+Gen4 kernel (arm64).

Signed-off-by: default avatarGeert Uytterhoeven <geert+renesas@glider.be>
Tested-by: default avatarWolfram Sang <wsa+renesas@sang-engineering.com>
Reviewed-by: default avatarYoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Tested-by: default avatarYoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Link: https://lore.kernel.org/r/cbbc8f464743d636895c048de61aa610d75392de.1654701156.git.geert+renesas@glider.be
parent bccceabb

drivers/soc/renesas/rcar-gen4-sysc.h

+2 −2
Original line number Diff line number Diff line
@@ -25,8 +25,8 @@ 
struct rcar_gen4_sysc_area {

	const char *name;

	u8 pdr;			/* PDRn */

	int parent;		/* -1 if none */

	unsigned int flags;	/* See PD_* */

	s8 parent;		/* -1 if none */

	u8 flags;		/* See PD_* */

};



/*

drivers/soc/renesas/rcar-sysc.h

+2 −2
Original line number Diff line number Diff line
@@ -31,8 +31,8 @@ struct rcar_sysc_area { 
	u16 chan_offs;		/* Offset of PWRSR register for this area */

	u8 chan_bit;		/* Bit in PWR* (except for PWRUP in PWRSR) */

	u8 isr_bit;		/* Bit in SYSCI*R */

	int parent;		/* -1 if none */

	unsigned int flags;	/* See PD_* */

	s8 parent;		/* -1 if none */

	u8 flags;		/* See PD_* */

};