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6 Commits

Author SHA1 Message Date
Anders Darander
fa2f60ffa0 gpio: DT bindings, move tca9554 from pcf857x to pca953x 
The TCA9554 is similar to the PCA9554. Update the DT binding docs.

Signed-off-by: Anders Darander <anders@chargestorm.se>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
 2017-04-24 18:30:26 +02:00
Steve Longerbeam
054ccdef8b gpio: pca953x: Add optional reset gpio control 
Add optional reset-gpios pin control. If present, de-assert the
specified reset gpio pin to bring the chip out of reset.

v2:
- Specify that reset signal to PCA953x chip is active low, in
  binding doc.
- reorder includes in gpio-pca953x.c.
- remove dev_err() on devm_gpiod_get_optional() error return.

Cc: Alexandre Courbot <gnurou@gmail.com>
Cc: linux-gpio@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Steve Longerbeam <steve_longerbeam@mentor.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Reviewed-by: Vladimir Zapolskiy <vladimir_zapolskiy@mentor.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
 2017-01-11 16:35:23 +01:00
Vignesh R
353661dfe1 gpio: pca953x: Add support for TI PCA9536 
TI PCA9536 is 4-Bit I2C GPIO expander without interrupt support[1].
Add support for the same.

[1] TRM: http://www.ti.com/lit/ds/symlink/pca9536.pdf

Signed-off-by: Vignesh R <vigneshr@ti.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
 2016-06-07 09:35:15 +02:00
Ben Dooks
9f49f6dd04 gpio: pca953x: add onsemi,pca9654 id 
Add onsemi,pca9654 which is also compatible with the nxp,pca9524 as it
is an 8bit expander with an interrupt output.

Signed-off-by: Ben Dooks <ben.dooks@codethink.co.uk>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
 2015-12-09 08:04:38 +01:00
Thierry Reding
2db8aba860 gpio: pca953x: Add TI TCA9539 support 
The TCA9539 is almost identical to the PCA9555 and software-compatible
with this driver. It exposes 16 general purpose I/O pins in two 8-bit
configurations.

Signed-off-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
 2015-10-02 15:06:42 -07:00
Markus Pargmann
e8126753a9 gpio: pca953x: Add DT binding documentation 
Add a devicetree binding documentation for the pca953x driver.

Signed-off-by: Markus Pargmann <mpa@pengutronix.de>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
 2014-08-28 14:19:40 +02:00