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| author | Hans de Goede <hdegoede@redhat.com> | 2014-12-24 19:34:38 +0100 |
|---|---|---|
| committer | Hans de Goede <hdegoede@redhat.com> | 2015-01-14 14:56:38 +0100 |
| commit | 6c727e09a022fcc0701eef58c4a5aedae5d9a6ac (patch) | |
| tree | b03dcd3a57abfd69fa7747c24ac91ff706cf7d33 /include | |
| parent | d27f7d14eaa1299b93c1e5efb691ddf0884885fa (diff) | |
| download | u-boot-6c727e09a022fcc0701eef58c4a5aedae5d9a6ac.tar.gz u-boot-6c727e09a022fcc0701eef58c4a5aedae5d9a6ac.tar.xz u-boot-6c727e09a022fcc0701eef58c4a5aedae5d9a6ac.zip | |
sunxi: gpio: Add support for gpio pins on the AXP209 pmic
Some boards use GPIO-s on the pmic, one example of this is the A13-OLinuXino
board, which uses gpio0 of the axp209 for the lcd-power signal.
This commit adds support for gpio pins on the AXP209 pmic, the sunxi_gpio.c
changes are universal, adding gpio support for the other AXP pmics (when
necessary) should be a matter of adding the necessary axp_gpio_foo functions
to their resp. drivers, and add "#define AXP_GPIO" to their header file.
Note this commit only adds support for the non device-model version of the
gpio code, patches for adding support to the device-model version are very
welcome.
The string representation for these gpio-s is AXP0-#, the 0 in the AXP0 prefix
is there in case we need to support gpio-s on more then 1 pmic in the future.
At least A80 boards have 2 pmics, and we may end up needing to support gpio-s
on both.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Ian Campbell <ijc@hellion.org.uk>
Diffstat (limited to 'include')
| -rw-r--r-- | include/axp209.h | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/include/axp209.h b/include/axp209.h index 21efce64bb..043624953a 100644 --- a/include/axp209.h +++ b/include/axp209.h @@ -4,6 +4,8 @@ * SPDX-License-Identifier: GPL-2.0+ */ +#define AXP_GPIO + extern int axp209_set_dcdc2(int mvolt); extern int axp209_set_dcdc3(int mvolt); extern int axp209_set_ldo2(int mvolt); @@ -12,3 +14,8 @@ extern int axp209_set_ldo4(int mvolt); extern int axp209_init(void); extern int axp209_poweron_by_dc(void); extern int axp209_power_button(void); + +extern int axp_gpio_direction_input(unsigned int pin); +extern int axp_gpio_direction_output(unsigned int pin, unsigned int val); +extern int axp_gpio_get_value(unsigned int pin); +extern int axp_gpio_set_value(unsigned int pin, unsigned int val); |