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3 commits

Author SHA1 Message Date
Axel Lin
6e66a6599a gpio: tpic2810: Make sure cached buffer has consistent status with h/w status 
i2c_smbus_write_byte_data() can fail. To ensure the
cached buffer has consistent status with h/w status, don't
update the cached gpio->buffer if write fails.

Also refactor the code a bit by adding a tpic2810_set_mask_bits()
helper and use it to simplify the code.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Reviewed-by: Alexandre Courbot <acourbot@nvidia.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
 2016-03-31 15:14:37 +02:00
Axel Lin
ce02d18fc1 gpio: tpic2810: Make tpic2810_direction_output set proper output level 
The .direction_output callback should set proper output level.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
 2016-02-16 15:56:51 +01:00
Andrew F. Davis
b866526d0c gpio: Add driver for TI TPIC2810 
Add driver for TI TPIC2810 8-Bit LED Driver with I2C Interface.

The TPIC2810 has 8 open-drain outputs that can but used to drive
LEDs and other low-side switched resistive loads.

Signed-off-by: Andrew F. Davis <afd@ti.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
 2016-02-10 15:22:06 +01:00