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Subject[PATCH] regmap: mmio: Add regmap_mmio_regbits_check.
Date
Fix the support for 1/2/8 bytes wide register address checking.

Signed-off-by: Xiubo Li <Li.Xiubo@freescale.com>
---


Sorry, this patch has been missed yesterday.



drivers/base/regmap/regmap-mmio.c | 20 ++++++++++++++++++--
1 file changed, 18 insertions(+), 2 deletions(-)

diff --git a/drivers/base/regmap/regmap-mmio.c b/drivers/base/regmap/regmap-mmio.c
index ed080a4..de45a1e 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);
--
1.8.4



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