4 Commits

Author	SHA1	Message	Date
Julia Lawall	e35b5ab0a7	gpio: constify gpio_chip structures ... These structures are only used to copy into other structures, so declare them as const. The semantic patch that makes this change is as follows: (http://coccinelle.lip6.fr/) // <smpl> @r disable optional_qualifier@ identifier i; position p; @@ static struct gpio_chip i@p = { ... }; @ok@ identifier r.i; expression e; position p; @@ e = i@p; @bad@ position p != {r.p,ok.p}; identifier r.i; struct gpio_chip e; @@ e@i@p @depends on !bad disable optional_qualifier@ identifier r.i; @@ static +const struct gpio_chip i = { ... }; // </smpl> Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr> Acked-by: Joachim Eastwood <manabian@gmail.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>	2016-09-13 10:35:56 +02:00
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