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| author | Masahiro Yamada <yamada.masahiro@socionext.com> | 2020-07-30 18:28:08 +0900 |
|---|---|---|
| committer | Masahiro Yamada <yamada.masahiro@socionext.com> | 2020-08-18 02:01:14 +0900 |
| commit | 351b74cb6d8787fb3f5f338a761bded7a1d445f5 (patch) | |
| tree | 322d5a39ab93ea8f31a692ae70e773de0642516e | |
| parent | 26f0c8600e482b94da4dc00d8f4de367726a1683 (diff) | |
| download | u-boot-351b74cb6d8787fb3f5f338a761bded7a1d445f5.tar.gz u-boot-351b74cb6d8787fb3f5f338a761bded7a1d445f5.tar.xz u-boot-351b74cb6d8787fb3f5f338a761bded7a1d445f5.zip | |
ARM: uniphier: use FIELD_GET() to get access to revision register fields
Define register fields as macros, and use FIELD_GET().
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
| -rw-r--r-- | arch/arm/mach-uniphier/sg-regs.h | 5 | ||||
| -rw-r--r-- | arch/arm/mach-uniphier/soc-info.c | 21 |
2 files changed, 15 insertions, 11 deletions
diff --git a/arch/arm/mach-uniphier/sg-regs.h b/arch/arm/mach-uniphier/sg-regs.h index f47d101949..a0fa51a8b7 100644 --- a/arch/arm/mach-uniphier/sg-regs.h +++ b/arch/arm/mach-uniphier/sg-regs.h @@ -10,6 +10,8 @@ #ifndef UNIPHIER_SG_REGS_H #define UNIPHIER_SG_REGS_H +#include <linux/bitops.h> + #ifndef __ASSEMBLY__ #include <linux/compiler.h> #ifdef CONFIG_ARCH_UNIPHIER_V8_MULTI @@ -24,6 +26,9 @@ extern void __iomem *sg_base; /* Revision */ #define SG_REVISION 0x0000 +#define SG_REVISION_TYPE_MASK GENMASK(23, 16) +#define SG_REVISION_MODEL_MASK GENMASK(10, 8) +#define SG_REVISION_REV_MASK GENMASK(4, 0) /* Memory Configuration */ #define SG_MEMCONF 0x0400 diff --git a/arch/arm/mach-uniphier/soc-info.c b/arch/arm/mach-uniphier/soc-info.c index f021a8cab3..b0221016d1 100644 --- a/arch/arm/mach-uniphier/soc-info.c +++ b/arch/arm/mach-uniphier/soc-info.c @@ -4,31 +4,30 @@ * Author: Masahiro Yamada <yamada.masahiro@socionext.com> */ +#include <linux/bitfield.h> #include <linux/io.h> #include <linux/types.h> #include "sg-regs.h" #include "soc-info.h" -static unsigned int __uniphier_get_revision_field(unsigned int mask, - unsigned int shift) -{ - u32 revision = readl(sg_base + SG_REVISION); - - return (revision >> shift) & mask; -} - unsigned int uniphier_get_soc_id(void) { - return __uniphier_get_revision_field(0xff, 16); + u32 rev = readl(sg_base + SG_REVISION); + + return FIELD_GET(SG_REVISION_TYPE_MASK, rev); } unsigned int uniphier_get_soc_model(void) { - return __uniphier_get_revision_field(0x7, 8); + u32 rev = readl(sg_base + SG_REVISION); + + return FIELD_GET(SG_REVISION_MODEL_MASK, rev); } unsigned int uniphier_get_soc_revision(void) { - return __uniphier_get_revision_field(0x1f, 0); + u32 rev = readl(sg_base + SG_REVISION); + + return FIELD_GET(SG_REVISION_REV_MASK, rev); } |