diff options
| author | Paul Mundt <lethal@linux-sh.org> | 2012-06-20 19:03:41 +0400 |
|---|---|---|
| committer | Paul Mundt <lethal@linux-sh.org> | 2012-06-20 19:03:41 +0400 |
| commit | 06d5631f56460917af3d9417ef63811cf0cad9ce (patch) | |
| tree | a25eee33f3198c4ba75c79b51a3bc85fd10a5f50 /include | |
| parent | 9f65b2b60c42c1e2d885acede4443b53f141c987 (diff) | |
| download | linux-06d5631f56460917af3d9417ef63811cf0cad9ce.tar.xz | |
sh: pfc: Verify pin type encoding size at build time.
The encoding is tightly packed, and future changes (such as
pinconf-generic support) can easily lead to a situation where we violate
the encoding constraints and trample data bit/reg bits. This plugs in
some sanity checks by way of a BUILD_BUG_ON() to blow up if we fail to
fit.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/sh_pfc.h | 23 |
1 files changed, 14 insertions, 9 deletions
diff --git a/include/linux/sh_pfc.h b/include/linux/sh_pfc.h index c06a47313a25..ed1d8234f6ae 100644 --- a/include/linux/sh_pfc.h +++ b/include/linux/sh_pfc.h @@ -16,15 +16,18 @@ typedef unsigned short pinmux_enum_t; typedef unsigned short pinmux_flag_t; -#define PINMUX_TYPE_NONE 0 -#define PINMUX_TYPE_FUNCTION 1 -#define PINMUX_TYPE_GPIO 2 -#define PINMUX_TYPE_OUTPUT 3 -#define PINMUX_TYPE_INPUT 4 -#define PINMUX_TYPE_INPUT_PULLUP 5 -#define PINMUX_TYPE_INPUT_PULLDOWN 6 +enum { + PINMUX_TYPE_NONE, -#define PINMUX_FLAG_TYPE (0x7) + PINMUX_TYPE_FUNCTION, + PINMUX_TYPE_GPIO, + PINMUX_TYPE_OUTPUT, + PINMUX_TYPE_INPUT, + PINMUX_TYPE_INPUT_PULLUP, + PINMUX_TYPE_INPUT_PULLDOWN, + + PINMUX_FLAG_TYPE, /* must be last */ +}; #define PINMUX_FLAG_DBIT_SHIFT 5 #define PINMUX_FLAG_DBIT (0x1f << PINMUX_FLAG_DBIT_SHIFT) @@ -36,7 +39,9 @@ struct pinmux_gpio { pinmux_flag_t flags; }; -#define PINMUX_GPIO(gpio, data_or_mark) [gpio] = { data_or_mark } +#define PINMUX_GPIO(gpio, data_or_mark) \ + [gpio] = { .enum_id = data_or_mark, .flags = PINMUX_TYPE_NONE } + #define PINMUX_DATA(data_or_mark, ids...) data_or_mark, ids, 0 struct pinmux_cfg_reg { |