At present devices use a simple integer offset to record the device tree
node associated with the device. In preparation for supporting a live
device tree, which uses a node pointer instead, refactor existing code to
access this field through an inline function.
Signed-off-by: Simon Glass <sjg@chromium.org>
The current simplify lpc32xx gpio driver implementation assume a
maximum of 32 GPIO per port; there are a total of 22 GPI, 24 GPO
and 6 GPIO to managed on port 3.
Update the driver to fix the following:
1) When requesting GPI_xx and GPO_xx on port 3 (xx is the same number)
the second call to "gpio_request" will return -EBUSY.
2) The status of GPO_xx pin report the status of the
corresponding GPI_xx pin when using the "gpio status" command.
3) The gpio driver may setup the direction register for the wrong
gpio when calling "gpio_direction_input" (GPI_xx) or
"gpio_direction_output" (GPO_xx) on port 3; the call to the
direction is require to use the "gpio status" command.
The following change were done in the driver:
1) port3 GPI are cache in a separate 32 bits in the array.
2) port3 direction register written only for GPIO pins.
3) port3 GPO & GPIO (as output) are read using "p3_outp_state".
4) LPC32XX_GPI_P3_GRP updated to match the change.
Signed-off-by: Sylvain Lemieux <slemieux@tycoint.com>
The LPC32XX GPIO driver platdata currently contains GPIO state information,
which should go into priv_data. Thus rename lpc32xx_gpio_platdata to
lpc32xx_gpio_priv and convert to use dev_get_priv() instead.
Signed-off-by: Axel Lin <axel.lin@ingics.com>
Tested-by: Albert ARIBAUD <albert.aribaud@3adev.fr>
Simon Glass
Sylvain Lemieux
Axel Lin
Albert ARIBAUD \(3ADEV\)