diff options
| author | Linus Walleij <linusw@kernel.org> | 2026-05-11 22:43:43 +0300 |
|---|---|---|
| committer | Bartosz Golaszewski <bartosz.golaszewski@oss.qualcomm.com> | 2026-05-12 12:54:17 +0300 |
| commit | 68d801eabda5219dcc25c9de98d3bbdb5b51b0a5 (patch) | |
| tree | eb1f8b7ce71e980f66e5b629128a5ea1369158df /include/linux | |
| parent | 63677aa485245cfc0e107f9d625d4f846223415a (diff) | |
| download | linux-68d801eabda5219dcc25c9de98d3bbdb5b51b0a5.tar.xz | |
gpio: regmap: Support sparsed fixed direction
On some regmapped GPIOs apparently only a sparser selection of the lines
(not all) are actually fixed direction.
Support this situation by adding an optional bitmap indicating which
GPIOs are actually fixed direction and which are not.
Link: https://lore.kernel.org/linux-gpio/20260501155421.3329862-10-elder@riscstar.com/
Tested-by: Alex Elder <elder@riscstar.com>
Signed-off-by: Linus Walleij <linusw@kernel.org>
Reviewed-by: Michael Walle <mwalle@kernel.org>
Reviewed-by: Alex Elder <elder@riscstar.com>
Link: https://patch.msgid.link/20260511-regmap-gpio-sparse-fixed-dir-v3-1-1429ec453be7@kernel.org
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@oss.qualcomm.com>
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/gpio/regmap.h | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/include/linux/gpio/regmap.h b/include/linux/gpio/regmap.h index 12d154732ca9..06255756710d 100644 --- a/include/linux/gpio/regmap.h +++ b/include/linux/gpio/regmap.h @@ -38,6 +38,12 @@ struct regmap; * offset to a register/bitmask pair. If not * given the default gpio_regmap_simple_xlate() * is used. + * @fixed_direction_mask: + * (Optional) Bitmap representing the GPIO lines that + * make use of the @fixed_direction_output list to + * enforce direction of the GPIO. If this is NULL + * and @fixed_direction_output is defined, ALL GPIOs + * are assumed to be fixed direction (out or in). * @fixed_direction_output: * (Optional) Bitmap representing the fixed direction of * the GPIO lines. Useful when there are GPIO lines with a @@ -89,6 +95,7 @@ struct gpio_regmap_config { int reg_stride; int ngpio_per_reg; struct irq_domain *irq_domain; + unsigned long *fixed_direction_mask; unsigned long *fixed_direction_output; #ifdef CONFIG_REGMAP_IRQ |