Commit b5d3061e authored by Gabriel Somlo's avatar Gabriel Somlo Committed by Stafford Horne
Browse files

drivers/soc/litex: separate MMIO from subregister offset calculation 



Separate MMIO (read/write) access into _[read|write]_litex_subregister()
static inline functions, leaving existing "READ|WRITE" macros to handle
calculation of the subregister offset only.

NOTE: this is a non-functional change.

Signed-off-by: default avatarGabriel Somlo <gsomlo@gmail.com>
Signed-off-by: default avatarStafford Horne <shorne@gmail.com>
parent 9d93a9e8

include/linux/litex.h

+14 −2
Original line number Diff line number Diff line
@@ -24,11 +24,23 @@ 
#define LITEX_SUBREG_SIZE	0x1

#define LITEX_SUBREG_SIZE_BIT	 (LITEX_SUBREG_SIZE * 8)



static inline void _write_litex_subregister(u32 val, void __iomem *addr)

{

	writel((u32 __force)cpu_to_le32(val), addr);

}



static inline u32 _read_litex_subregister(void __iomem *addr)

{

	return le32_to_cpu((__le32 __force)readl(addr));

}



#define WRITE_LITEX_SUBREGISTER(val, base_offset, subreg_id) \

	writel((u32 __force)cpu_to_le32(val), base_offset + (LITEX_REG_SIZE * subreg_id))

	_write_litex_subregister(val, (base_offset) + \

					LITEX_REG_SIZE * (subreg_id))



#define READ_LITEX_SUBREGISTER(base_offset, subreg_id) \

	le32_to_cpu((__le32 __force)readl(base_offset + (LITEX_REG_SIZE * subreg_id)))

	_read_litex_subregister((base_offset) + \

					LITEX_REG_SIZE * (subreg_id))



/*

 * LiteX SoC Generator, depending on the configuration, can split a single