diff options
| author | Andy Shevchenko <andriy.shevchenko@linux.intel.com> | 2022-08-08 23:33:59 +0300 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2022-08-15 01:20:10 +0100 |
| commit | 93ce557679e1cf7742ad327d40a1499e7d8535b7 (patch) | |
| tree | 9fecbc51d2df2443ae2d10e0156efd3578767ac1 /include/linux/regmap.h | |
| parent | 159dfabd207628c983e0c3c5ef607f496ff5e6a5 (diff) | |
regmap: mmio: Introduce IO accessors that can talk to IO port
Some users may use regmap MMIO for IO ports, and this can be done
by assigning ioreadXX()/iowriteXX() and their Big Endian counterparts
to the regmap context.
Add IO port support with a corresponding flag added.
While doing that, make sure that user won't select relaxed MMIO access
along with IO port because the latter have no relaxed variants.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: William Breathitt Gray <william.gray@linaro.org>
Link: https://lore.kernel.org/r/20220808203401.35153-4-andriy.shevchenko@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'include/linux/regmap.h')
| -rw-r--r-- | include/linux/regmap.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/include/linux/regmap.h b/include/linux/regmap.h index 7cf2157134ac..8cccc247cd37 100644 --- a/include/linux/regmap.h +++ b/include/linux/regmap.h @@ -311,6 +311,8 @@ typedef void (*regmap_unlock)(void *); * This field is a duplicate of a similar file in * 'struct regmap_bus' and serves exact same purpose. * Use it only for "no-bus" cases. + * @io_port: Support IO port accessors. Makes sense only when MMIO vs. IO port + * access can be distinguished. * @max_register: Optional, specifies the maximum valid register address. * @wr_table: Optional, points to a struct regmap_access_table specifying * valid ranges for write access. @@ -399,6 +401,7 @@ struct regmap_config { size_t max_raw_write; bool fast_io; + bool io_port; unsigned int max_register; const struct regmap_access_table *wr_table; |