From 451485ba6bfbed36220b9e710fca0525f62e771d Mon Sep 17 00:00:00 2001 From: Xiubo Li Date: Fri, 28 Mar 2014 13:12:56 +0800 Subject: regmap: mmio: Add regmap_mmio_regbits_check. Fix the support for 1/2/8 bytes wide register address checking. Signed-off-by: Xiubo Li Signed-off-by: Mark Brown --- drivers/base/regmap/regmap-mmio.c | 20 ++++++++++++++++++-- 1 file changed, 18 insertions(+), 2 deletions(-) (limited to 'drivers/base') diff --git a/drivers/base/regmap/regmap-mmio.c b/drivers/base/regmap/regmap-mmio.c index ed080a47b1f8..de45a1e1548f 100644 --- a/drivers/base/regmap/regmap-mmio.c +++ b/drivers/base/regmap/regmap-mmio.c @@ -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); -- cgit v1.2.3