diff options
| author | Pritesh Raithatha <praithatha@nvidia.com> | 2010-11-22 17:55:54 +0530 |
|---|---|---|
| committer | Bharat Nihalani <bnihalani@nvidia.com> | 2010-12-01 00:30:10 -0800 |
| commit | 9d3ec24ff1b51f050c49720a6fd3271cbde47bb6 (patch) | |
| tree | deb3cee3b8ed039072ff9e598606f7a0941255ba /drivers/mfd | |
| parent | f2a268e16cdefab8757793bcf2679117f37fda3d (diff) | |
ARM: tegra: tps6586x: add empty function direction_input
-on reset default direction is in NOT_CONFIGURED (neither input
nor output) mode.
-as tps6586x driver has not implemented direction_input, gpiolib
sysfs only creates a value node not any direction node for
each gpios. so from user space there is no way to set direction
(or to call function tps6586x_update).
-by adding empty function for direction_input solves the above
problem by providing direction node in sysfs.
Change-Id: I608bcfcd4392c20afab39874deacc6dc20f45063
Reviewed-on: http://git-master/r/11340
Reviewed-by: Mayuresh Kulkarni <mkulkarni@nvidia.com>
Tested-by: Pritesh Raithatha <praithatha@nvidia.com>
Reviewed-by: Peter Zu <pzu@nvidia.com>
Reviewed-by: Daniel Willemsen <dwillemsen@nvidia.com>
Diffstat (limited to 'drivers/mfd')
| -rw-r--r-- | drivers/mfd/tps6586x.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/drivers/mfd/tps6586x.c b/drivers/mfd/tps6586x.c index 76c315229abe..c3dc32211d9e 100644 --- a/drivers/mfd/tps6586x.c +++ b/drivers/mfd/tps6586x.c @@ -276,6 +276,12 @@ static void tps6586x_gpio_set(struct gpio_chip *chip, unsigned offset, value << offset); } +static int tps6586x_gpio_input(struct gpio_chip *gc, unsigned offset) +{ + /* FIXME: add handling of GPIOs as dedicated inputs */ + return -ENOSYS; +} + static int tps6586x_gpio_output(struct gpio_chip *gc, unsigned offset, int value) { @@ -304,7 +310,7 @@ static void tps6586x_gpio_init(struct tps6586x *tps6586x, int gpio_base) tps6586x->gpio.ngpio = 4; tps6586x->gpio.can_sleep = 1; - /* FIXME: add handling of GPIOs as dedicated inputs */ + tps6586x->gpio.direction_input = tps6586x_gpio_input; tps6586x->gpio.direction_output = tps6586x_gpio_output; tps6586x->gpio.set = tps6586x_gpio_set; tps6586x->gpio.get = tps6586x_gpio_get; |