summaryrefslogtreecommitdiff
path: root/drivers/base/regmap/regmap-mmio.c
diff options
context:
space:
mode:
authorXiubo Li <Li.Xiubo@freescale.com>2014-03-28 09:12:56 +0400
committerMark Brown <broonie@linaro.org>2014-03-28 15:12:05 +0400
commit451485ba6bfbed36220b9e710fca0525f62e771d (patch)
treeaab504ba27ca65b06fba3cb5cb70d7498b30ea9e /drivers/base/regmap/regmap-mmio.c
parent932580409a9dacbf42215fa737bf06ae2c0aa624 (diff)
downloadlinux-451485ba6bfbed36220b9e710fca0525f62e771d.tar.xz
regmap: mmio: Add regmap_mmio_regbits_check.
Fix the support for 1/2/8 bytes wide register address checking. Signed-off-by: Xiubo Li <Li.Xiubo@freescale.com> Signed-off-by: Mark Brown <broonie@linaro.org>
Diffstat (limited to 'drivers/base/regmap/regmap-mmio.c')
-rw-r--r--drivers/base/regmap/regmap-mmio.c20
1 files changed, 18 insertions, 2 deletions
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);