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Commit 451485ba authored by Xiubo Li's avatar Xiubo Li Committed by Mark Brown
Browse files

regmap: mmio: Add regmap_mmio_regbits_check. 



Fix the support for 1/2/8 bytes wide register address checking.

Signed-off-by: default avatarXiubo Li <Li.Xiubo@freescale.com>
Signed-off-by: default avatarMark Brown <broonie@linaro.org>
parent 93258040

drivers/base/regmap/regmap-mmio.c

+18 −2
Original line number Diff line number Diff line
@@ -47,6 +47,21 @@ static inline void regmap_mmio_regsize_check(size_t reg_size) 
	}

}



static int regmap_mmio_regbits_check(size_t reg_bits)

{

	switch (reg_bits) {

	case 8:

	case 16:

	case 32:

#ifdef CONFIG_64BIT

	case 64:

#endif

		return 0;

	default:

		return -EINVAL;

	}

}



static inline void regmap_mmio_count_check(size_t count)

{

	BUG_ON(count % 2 != 0);
@@ -191,8 +206,9 @@ static struct regmap_mmio_context *regmap_mmio_gen_context(struct device *dev, 
	int min_stride;

	int ret;



	if (config->reg_bits != 32)

		return ERR_PTR(-EINVAL);

	ret = regmap_mmio_regbits_check(config->reg_bits);

	if (ret)

		return ERR_PTR(ret);



	if (config->pad_bits)

		return ERR_PTR(-EINVAL);