Commit graph

9 commits

Author SHA1 Message Date
Simon Glass
57d99d368e dm: gpio: tegra: Drop request()/free() in the driver
Now that the uclass supports gpio_request/free() there is no need for the
driver to implement it too. Drop this unnecessary code.

Signed-off-by: Simon Glass <sjg@chromium.org>
2014-10-23 19:29:53 -06:00
Marcel Ziswiler
1c1786d4c5 tegra: gpio: fix null label regression
Fix Tegra GPIO driver to not crash resp. misbehave upon requesting
GPIOs with an empty aka NULL label. As the driver uses exclusively the
label to check for reservation status actually supplying one is
mandatory!

This fixes a regression introduced by commit:

2fccd2d96b
tegra: Convert tegra GPIO driver to use driver model

Signed-off-by: Marcel Ziswiler <marcel@ziswiler.com>
Acked-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Tom Warren <twarren@nvidia.com>
2014-10-22 09:30:55 -07:00
Simon Glass
2fccd2d96b tegra: Convert tegra GPIO driver to use driver model
This is an implementation of GPIOs for Tegra that uses driver model. It has
been tested on trimslice and also using the new iotrace feature.

The implementation uses a top-level GPIO device (which has no actual GPIOS).
Under this all the banks are created as separate GPIO devices.

The GPIOs are named as per the Tegra datasheet/header files: A0..A7, B0..B7,
..., Z0..Z7, AA0..AA7, etc.

Since driver model is not yet available before relocation, or in SPL, a
special function is provided for seaboard's SPL code.

Signed-off-by: Simon Glass <sjg@chromium.org>
2014-09-10 12:59:59 -06:00
Stephen Warren
eceb3f26f4 ARM: tegra: add GPIO initialization table function
The HW-defined procedure for booting Tegra requires that some pins be
set up as GPIOs immediately at boot in order to avoid glitches on those
pins, when the pinmux is programmed. Add a feature to the GPIO driver
which executes a GPIO configuration table. Board files will use this to
implement the correct HW initialization procedure.

Signed-off-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Tom Warren <twarren@nvidia.com>
2014-05-13 10:41:31 -07:00
Wolfgang Denk
1a4596601f Add GPL-2.0+ SPDX-License-Identifier to source files
Signed-off-by: Wolfgang Denk <wd@denx.de>
[trini: Fixup common/cmd_io.c]
Signed-off-by: Tom Rini <trini@ti.com>
2013-07-24 09:44:38 -04:00
Tom Warren
150c24936b Tegra20: Move some include files to arch-tegra for sharing with Tegra30
The move is pretty straight-forward. ap20.h and tegra20.h were renamed to ap.h and tegra.h.
Some files remain in arch-tegra20 but 'include' a file in 'arch-tegra' with #defines & structs
that will be common between T20 and T30 HW. HW-specific #defines, etc. stay in the 'arch-tegra20'
'root' file.

All boards build OK w/MAKEALL -s tegra20. Checkpatch.pl runs clean. Seaboard works OK.

Signed-off-by: Tom Warren <twarren@nvidia.com>
2012-10-15 11:54:06 -07:00
Tom Warren
29f3e3f248 Tegra: Change Tegra20 to Tegra in common code, prep for T30
Convert TEGRA20_ defines to either TEGRA_ or NV_PA_ where appropriate.
Convert tegra20_ source file and function names to tegra_, also.

Upcoming Tegra30 port will use common code/defines/names where possible.

Signed-off-by: Tom Warren <twarren@nvidia.com>
Acked-by: Stephen Warren <swarren@nvidia.com>
2012-09-10 13:01:24 -07:00
Allen Martin
00a2749d7b tegra20: rename tegra2 -> tegra20
This is make naming consistent with the kernel and devicetree and in
preparation of pulling out the common tegra20 code.

Signed-off-by: Allen Martin <amartin@nvidia.com>
Acked-by: Stephen Warren <swarren@wwwdotorg.org>
Tested-by: Thierry Reding <thierry.reding@avionic-design.de>
Signed-off-by: Tom Warren <twarren@nvidia.com>
2012-09-01 14:58:21 +02:00
Tom Warren
52a8b82074 gpio: tegra2: rename tegra2_gpio.* to tegra_gpio.*
In anticipation of Tegra3 support, continue removing/renaming
Tegra2-specific files. No functional changes (yet).
Updated copyrights to 2012.

Signed-off-by: Tom Warren <twarren@nvidia.com>
2012-07-07 14:07:20 +02:00
Renamed from drivers/gpio/tegra2_gpio.c (Browse further)