u-boot.git/drivers/gpio, branch v2015.04

lpc32xx: add GPIO support

2015-04-10T12:23:09+00:00

This driver only supports Driver Model, not legacy model.

Signed-off-by: Albert ARIBAUD (3ADEV)

dm: tegra: Enable driver model in SPL and adjust the GPIO driver

2015-03-04T19:55:04+00:00

Use the full driver model GPIO and serial drivers in SPL now that these are
supported. Since device tree is not available they will use platform data.

Remove the special SPL GPIO function as it is no longer needed.

This is all in one commit to maintain bisectability.

Signed-off-by: Simon Glass

dm:gpio:mxc add DT support

2015-02-12T22:17:29+00:00

This patch add DT support for mxc gpio driver.

There are one place using CONFIG_OF_CONTROL macro.
1. The U_BOOT_DEVICES and mxc_plat array are complied out. To DT,
   platdata is alloced using calloc, so there is no need to use mxc_plat.

The following situations are tested, and all work fine:
1. with DM, without DT
2. with DM and DT
3. without DM
Since device tree has not been upstreamed, if want to test this patch.
The followings need to be done.
 + pieces of code does not gpio_request when using gpio_direction_xxx and
   etc, need to request gpio.
 + move the gpio settings from board_early_init_f to board_init
 + define CONFIG_DM ,CONFIG_DM_GPIO and CONFIG_OF_CONTROL
 + Add device tree file and do related configuration in
   `make ARCH=arm menuconfig`
These will be done in future patches by step.

Signed-off-by: Peng Fan 
Acked-by: Igor Grinberg 
Acked-by: Simon Glass

dm:gpio:mxc add a bank_index entry in platdata

2015-02-12T22:17:29+00:00

Add a new entry in platdata structure and intialize
bank_index in mxc_plat array.
This new entry can avoid using `plat - mxc_plat` by using
`plat->bank_index`.

Signed-off-by: Peng Fan 
Acked-by: Igor Grinberg 
Acked-by: Simon Glass

dm: Expand and complete Kconfig in drivers/

2015-02-12T17:35:33+00:00

Expand the help messages for each driver. Add missing Kconfig for I2C,
SPI flash and thermal.

Signed-off-by: Simon Glass 
Reviewed-by: Masahiro Yamada

gpio: omap: Pass correct argument to _get_gpio_direction()

2015-02-12T17:35:29+00:00

Pass bank rather than bank->base to _get_gpio_direction().

Signed-off-by: Axel Lin 
Acked-by: Simon Glass

gpio: at91: Fix getting address of private data

2015-02-12T17:35:29+00:00

Use dev_get_priv() rather than dev_get_platdata() to get correct address of
private data.

Signed-off-by: Axel Lin 
Acked-by: Simon Glass

dm: exynos: Add a GPIO translation function

2015-01-30T00:09:51+00:00

This deals with the polarity bit. It also changes the GPIO devices so that
the correct device tree node is linked to each one. This allows us to use
the new uclass phandle functionality to implement a proper GPIO binding.

Signed-off-by: Simon Glass

dm: tegra: Add a GPIO translation function

2015-01-30T00:09:51+00:00

This deals with the polarity bit and selecting the correct bank device
given a GPIO number.

Signed-off-by: Simon Glass

dm: gpio: Add better functions to request GPIOs

2015-01-30T00:09:51+00:00

At present U-Boot sort-of supports the standard way of reading GPIOs from
device tree nodes, but the support is incomplete, a bit clunky and only
works for GPIO bindings where #gpio-cells is 2.

Add new functions to request GPIOs, taking full account of the device
tree binding. These permit requesting a GPIO with a simple call like:

   gpio_request_by_name(dev, "cd-gpios", 0, &desc, GPIOD_IS_IN);

This will request the GPIO, looking at the device's node which might be
this, for example:

   cd-gpios = <&gpio TEGRA_GPIO(B, 3) GPIO_ACTIVE_LOW>;

The GPIO will be set to input mode in this case and polarity will be
honoured by the GPIO calls.

It is also possible to request and free a list of GPIOs.

Signed-off-by: Simon Glass