[PATCH] i2c: mux: ltc4306: use new GPIO line value setter callbacks

[PATCH] i2c: mux: ltc4306: use new GPIO line value setter callbacks

[Bartosz Golaszewski]

From: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>

struct gpio_chip now has callbacks for setting line values that return
an integer, allowing to indicate failures. Convert the driver to using
them.

Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
---
Peter: I know you've not been very active recently. If you prefer to
just Ack it and let me take it through the GPIO tree, please do.
---
 drivers/i2c/muxes/i2c-mux-ltc4306.c | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/drivers/i2c/muxes/i2c-mux-ltc4306.c b/drivers/i2c/muxes/i2c-mux-ltc4306.c
index 8a87f19bf5d5..c688af270a11 100644
--- a/drivers/i2c/muxes/i2c-mux-ltc4306.c
+++ b/drivers/i2c/muxes/i2c-mux-ltc4306.c
@@ -85,13 +85,13 @@ static int ltc4306_gpio_get(struct gpio_chip *chip, unsigned int offset)
 	return !!(val & BIT(1 - offset));
 }
 
-static void ltc4306_gpio_set(struct gpio_chip *chip, unsigned int offset,
-			     int value)
+static int ltc4306_gpio_set(struct gpio_chip *chip, unsigned int offset,
+			    int value)
 {
 	struct ltc4306 *data = gpiochip_get_data(chip);
 
-	regmap_update_bits(data->regmap, LTC_REG_CONFIG, BIT(5 - offset),
-			   value ? BIT(5 - offset) : 0);
+	return regmap_update_bits(data->regmap, LTC_REG_CONFIG,
+				  BIT(5 - offset), value ? BIT(5 - offset) : 0);
 }
 
 static int ltc4306_gpio_get_direction(struct gpio_chip *chip,
@@ -164,7 +164,7 @@ static int ltc4306_gpio_init(struct ltc4306 *data)
 	data->gpiochip.direction_input = ltc4306_gpio_direction_input;
 	data->gpiochip.direction_output = ltc4306_gpio_direction_output;
 	data->gpiochip.get = ltc4306_gpio_get;
-	data->gpiochip.set = ltc4306_gpio_set;
+	data->gpiochip.set_rv = ltc4306_gpio_set;
 	data->gpiochip.set_config = ltc4306_gpio_set_config;
 	data->gpiochip.owner = THIS_MODULE;
 

---
base-commit: 0af2f6be1b4281385b618cb86ad946eded089ac8
change-id: 20250331-gpiochip-set-rv-i2c-mux-a060817c1c04

Best regards,
-- 
Bartosz Golaszewski <bartosz.golaszewski@linaro.org>

Re: [PATCH] i2c: mux: ltc4306: use new GPIO line value setter callbacks

[Peter Rosin]

Hi!

2025-04-07 at 09:17, Bartosz Golaszewski wrote:
> From: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
> 
> struct gpio_chip now has callbacks for setting line values that return
> an integer, allowing to indicate failures. Convert the driver to using
> them.
> 
> Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
> ---
> Peter: I know you've not been very active recently. If you prefer to
> just Ack it and let me take it through the GPIO tree, please do.

What normally happens is that I just Ack trivial things like this, and
then either Wolfram or Andi picks it. The risk of future conflicts in
this area (and cycle) should be low, so I don't think it really matters
if you pick it, but Wolfram/Andi should have first dibs, since it makes
for slightly neater PRs during the merge window.

Acked-by: Peter Rosin <peda@axentia.se>

Cheers,
Peter

Re: [PATCH] i2c: mux: ltc4306: use new GPIO line value setter callbacks

[Linus Walleij]

On Mon, Apr 7, 2025 at 9:17 AM Bartosz Golaszewski <brgl@bgdev.pl> wrote:

> From: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
>
> struct gpio_chip now has callbacks for setting line values that return
> an integer, allowing to indicate failures. Convert the driver to using
> them.
>
> Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>

Reviewed-by: Linus Walleij <linus.walleij@linaro.org>

Yours,
Linus Walleij

Re: [PATCH] i2c: mux: ltc4306: use new GPIO line value setter callbacks

[Bartosz Golaszewski]

On Mon, Apr 7, 2025 at 10:08 AM Peter Rosin <peda@axentia.se> wrote:
>
> Hi!
>
> 2025-04-07 at 09:17, Bartosz Golaszewski wrote:
> > From: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
> >
> > struct gpio_chip now has callbacks for setting line values that return
> > an integer, allowing to indicate failures. Convert the driver to using
> > them.
> >
> > Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
> > ---
> > Peter: I know you've not been very active recently. If you prefer to
> > just Ack it and let me take it through the GPIO tree, please do.
>
> What normally happens is that I just Ack trivial things like this, and
> then either Wolfram or Andi picks it. The risk of future conflicts in
> this area (and cycle) should be low, so I don't think it really matters
> if you pick it, but Wolfram/Andi should have first dibs, since it makes
> for slightly neater PRs during the merge window.
>
> Acked-by: Peter Rosin <peda@axentia.se>
>

I just realized their emails didn't pop up in b4 --auto-to-cc. Cc'ed
now. Wolfram, Andi: do you want to pick it up or should I take it via
the GPIO tree?

Bartosz

Re: [PATCH] i2c: mux: ltc4306: use new GPIO line value setter callbacks

[Wolfram Sang]

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> I just realized their emails didn't pop up in b4 --auto-to-cc. Cc'ed
> now. Wolfram, Andi: do you want to pick it up or should I take it via
> the GPIO tree?

If there is no dependency in your tree, then I prefer to pick it myself.


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Re: [PATCH] i2c: mux: ltc4306: use new GPIO line value setter callbacks

[Bartosz Golaszewski]

On Thu, Apr 24, 2025 at 10:10 AM Wolfram Sang <wsa@the-dreams.de> wrote:
>
>
> > I just realized their emails didn't pop up in b4 --auto-to-cc. Cc'ed
> > now. Wolfram, Andi: do you want to pick it up or should I take it via
> > the GPIO tree?
>
> If there is no dependency in your tree, then I prefer to pick it myself.
>

No, everything's upstream.

Bartosz

Re: [PATCH] i2c: mux: ltc4306: use new GPIO line value setter callbacks

[Wolfram Sang]

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On Thu, Apr 24, 2025 at 09:16:48AM +0200, Bartosz Golaszewski wrote:
> On Mon, Apr 7, 2025 at 10:08 AM Peter Rosin <peda@axentia.se> wrote:
> >
> > Hi!
> >
> > 2025-04-07 at 09:17, Bartosz Golaszewski wrote:
> > > From: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
> > >
> > > struct gpio_chip now has callbacks for setting line values that return
> > > an integer, allowing to indicate failures. Convert the driver to using
> > > them.
> > >
> > > Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>

Applied to for-next, thanks!


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