| Message ID | 20170112163924.4414-1-alexander.stein@systec-electronic.com |
|---|---|
| State | New |
| Headers | show |
On Thu, Jan 12, 2017 at 05:39:24PM +0100, Alexander Stein wrote: > Currently all users of fwnode_get_named_gpiod() have no way to specify a > label for the GPIO. So GPIOs listed in debugfs are shown with label "?". > With this change a proper label is used. > Also adjust all users so they can pass a label, properly retrieved from > device tree properties. > > Signed-off-by: Alexander Stein <alexander.stein@systec-electronic.com> > CC: Andy Shevchenko <andriy.shevchenko@linux.intel.com> > CC: Jacek Anaszewski <jacek.anaszewski@gmail.com> > --- > v2: > * Non-RFC > * This patch is rebased on gpio/for-next branch and cherry-picked commit > 2715bbe from https://bitbucket.org/andy-shev/linux.git > > drivers/gpio/devres.c | 5 +++-- > drivers/gpio/gpiolib.c | 5 +++-- > drivers/input/keyboard/gpio_keys.c | 3 ++- > drivers/input/keyboard/gpio_keys_polled.c | 3 ++- For input: Acked-by: Dmitry Torokhov <dmitry.torokhov@gmail.com> > drivers/leds/leds-gpio.c | 13 +++++++------ > drivers/video/fbdev/amba-clcd-nomadik.c | 12 ++++++++---- > include/linux/gpio/consumer.h | 12 ++++++++---- > 7 files changed, 33 insertions(+), 20 deletions(-) > > diff --git a/drivers/gpio/devres.c b/drivers/gpio/devres.c > index 6d77b60..d196be7 100644 > --- a/drivers/gpio/devres.c > +++ b/drivers/gpio/devres.c > @@ -140,7 +140,8 @@ EXPORT_SYMBOL(devm_gpiod_get_index); > struct gpio_desc *devm_get_gpiod_from_child(struct device *dev, > const char *con_id, > struct fwnode_handle *child, > - enum gpiod_flags flags) > + enum gpiod_flags flags, > + const char *label) > { > char prop_name[32]; /* 32 is max size of property name */ > struct gpio_desc **dr; > @@ -160,7 +161,7 @@ struct gpio_desc *devm_get_gpiod_from_child(struct device *dev, > snprintf(prop_name, sizeof(prop_name), "%s", > gpio_suffixes[i]); > > - desc = fwnode_get_named_gpiod(child, prop_name, flags); > + desc = fwnode_get_named_gpiod(child, prop_name, flags, label); > if (!IS_ERR(desc) || (PTR_ERR(desc) != -ENOENT)) > break; > } > diff --git a/drivers/gpio/gpiolib.c b/drivers/gpio/gpiolib.c > index 46a4334..59d3d96 100644 > --- a/drivers/gpio/gpiolib.c > +++ b/drivers/gpio/gpiolib.c > @@ -3317,7 +3317,8 @@ EXPORT_SYMBOL_GPL(gpiod_get_index); > */ > struct gpio_desc *fwnode_get_named_gpiod(struct fwnode_handle *fwnode, > const char *propname, > - enum gpiod_flags dflags) > + enum gpiod_flags dflags, > + const char *label) > { > struct gpio_desc *desc = ERR_PTR(-ENODEV); > unsigned long lflags = 0; > @@ -3348,7 +3349,7 @@ struct gpio_desc *fwnode_get_named_gpiod(struct fwnode_handle *fwnode, > if (IS_ERR(desc)) > return desc; > > - ret = gpiod_request(desc, NULL); > + ret = gpiod_request(desc, label); > if (ret) > return ERR_PTR(ret); > > diff --git a/drivers/input/keyboard/gpio_keys.c b/drivers/input/keyboard/gpio_keys.c > index 9de4b87..2ec74d9 100644 > --- a/drivers/input/keyboard/gpio_keys.c > +++ b/drivers/input/keyboard/gpio_keys.c > @@ -481,7 +481,8 @@ static int gpio_keys_setup_key(struct platform_device *pdev, > spin_lock_init(&bdata->lock); > > if (child) { > - bdata->gpiod = devm_get_gpiod_from_child(dev, NULL, child, GPIOD_IN); > + bdata->gpiod = devm_get_gpiod_from_child(dev, NULL, child, > + GPIOD_IN, desc); > if (IS_ERR(bdata->gpiod)) { > error = PTR_ERR(bdata->gpiod); > if (error == -ENOENT) { > diff --git a/drivers/input/keyboard/gpio_keys_polled.c b/drivers/input/keyboard/gpio_keys_polled.c > index fd7ab4d..5e35c56 100644 > --- a/drivers/input/keyboard/gpio_keys_polled.c > +++ b/drivers/input/keyboard/gpio_keys_polled.c > @@ -305,7 +305,8 @@ static int gpio_keys_polled_probe(struct platform_device *pdev) > > bdata->gpiod = devm_get_gpiod_from_child(dev, NULL, > child, > - GPIOD_IN); > + GPIOD_IN, > + button->desc); > if (IS_ERR(bdata->gpiod)) { > error = PTR_ERR(bdata->gpiod); > if (error != -EPROBE_DEFER) > diff --git a/drivers/leds/leds-gpio.c b/drivers/leds/leds-gpio.c > index 00cc671..6c4825d 100644 > --- a/drivers/leds/leds-gpio.c > +++ b/drivers/leds/leds-gpio.c > @@ -174,12 +174,6 @@ static struct gpio_leds_priv *gpio_leds_create(struct platform_device *pdev) > const char *state = NULL; > struct device_node *np = to_of_node(child); > > - led.gpiod = devm_get_gpiod_from_child(dev, NULL, child, GPIOD_ASIS); > - if (IS_ERR(led.gpiod)) { > - fwnode_handle_put(child); > - return ERR_CAST(led.gpiod); > - } > - > ret = fwnode_property_read_string(child, "label", &led.name); > if (ret && IS_ENABLED(CONFIG_OF) && np) > led.name = np->name; > @@ -188,6 +182,13 @@ static struct gpio_leds_priv *gpio_leds_create(struct platform_device *pdev) > return ERR_PTR(-EINVAL); > } > > + led.gpiod = devm_get_gpiod_from_child(dev, NULL, child, > + GPIOD_ASIS, led.name); > + if (IS_ERR(led.gpiod)) { > + fwnode_handle_put(child); > + return ERR_CAST(led.gpiod); > + } > + > fwnode_property_read_string(child, "linux,default-trigger", > &led.default_trigger); > > diff --git a/drivers/video/fbdev/amba-clcd-nomadik.c b/drivers/video/fbdev/amba-clcd-nomadik.c > index 2e800d7..9175ad9 100644 > --- a/drivers/video/fbdev/amba-clcd-nomadik.c > +++ b/drivers/video/fbdev/amba-clcd-nomadik.c > @@ -185,22 +185,26 @@ static void tpg110_init(struct device *dev, struct device_node *np, > dev_info(dev, "TPG110 display init\n"); > > /* This asserts the GRESTB signal, putting the display into reset */ > - grestb = devm_get_gpiod_from_child(dev, "grestb", &np->fwnode, GPIOD_OUT_HIGH); > + grestb = devm_get_gpiod_from_child(dev, "grestb", &np->fwnode, > + GPIOD_OUT_HIGH, "grestb"); > if (IS_ERR(grestb)) { > dev_err(dev, "no GRESTB GPIO\n"); > return; > } > - scen = devm_get_gpiod_from_child(dev, "scen", &np->fwnode, GPIOD_OUT_LOW); > + scen = devm_get_gpiod_from_child(dev, "scen", &np->fwnode, > + GPIOD_OUT_LOW, "scen"); > if (IS_ERR(scen)) { > dev_err(dev, "no SCEN GPIO\n"); > return; > } > - scl = devm_get_gpiod_from_child(dev, "scl", &np->fwnode, GPIOD_OUT_LOW); > + scl = devm_get_gpiod_from_child(dev, "scl", &np->fwnode, GPIOD_OUT_LOW, > + "scl"); > if (IS_ERR(scl)) { > dev_err(dev, "no SCL GPIO\n"); > return; > } > - sda = devm_get_gpiod_from_child(dev, "sda", &np->fwnode, GPIOD_OUT_LOW); > + sda = devm_get_gpiod_from_child(dev, "sda", &np->fwnode, GPIOD_OUT_LOW, > + "sda"); > if (IS_ERR(sda)) { > dev_err(dev, "no SDA GPIO\n"); > return; > diff --git a/include/linux/gpio/consumer.h b/include/linux/gpio/consumer.h > index 930d100..80bad7e 100644 > --- a/include/linux/gpio/consumer.h > +++ b/include/linux/gpio/consumer.h > @@ -136,11 +136,13 @@ struct fwnode_handle; > > struct gpio_desc *fwnode_get_named_gpiod(struct fwnode_handle *fwnode, > const char *propname, > - enum gpiod_flags dflags); > + enum gpiod_flags dflags, > + const char *label); > struct gpio_desc *devm_get_gpiod_from_child(struct device *dev, > const char *con_id, > struct fwnode_handle *child, > - enum gpiod_flags flags); > + enum gpiod_flags flags, > + const char *label); > #else /* CONFIG_GPIOLIB */ > > static inline int gpiod_count(struct device *dev, const char *con_id) > @@ -416,7 +418,8 @@ struct fwnode_handle; > static inline > struct gpio_desc *fwnode_get_named_gpiod(struct fwnode_handle *fwnode, > const char *propname, > - enum gpiod_flags dflags) > + enum gpiod_flags dflags, > + const char *label) > { > return ERR_PTR(-ENOSYS); > } > @@ -425,7 +428,8 @@ static inline > struct gpio_desc *devm_get_gpiod_from_child(struct device *dev, > const char *con_id, > struct fwnode_handle *child, > - enum gpiod_flags flags) > + enum gpiod_flags flags, > + const char *label) > { > return ERR_PTR(-ENOSYS); > } > -- > 2.10.2 >
Hi, On Thursday, January 12, 2017 05:39:24 PM Alexander Stein wrote: > Currently all users of fwnode_get_named_gpiod() have no way to specify a > label for the GPIO. So GPIOs listed in debugfs are shown with label "?". > With this change a proper label is used. > Also adjust all users so they can pass a label, properly retrieved from > device tree properties. > > Signed-off-by: Alexander Stein <alexander.stein@systec-electronic.com> > CC: Andy Shevchenko <andriy.shevchenko@linux.intel.com> > CC: Jacek Anaszewski <jacek.anaszewski@gmail.com> > --- > v2: > * Non-RFC > * This patch is rebased on gpio/for-next branch and cherry-picked commit > 2715bbe from https://bitbucket.org/andy-shev/linux.git > > drivers/gpio/devres.c | 5 +++-- > drivers/gpio/gpiolib.c | 5 +++-- > drivers/input/keyboard/gpio_keys.c | 3 ++- > drivers/input/keyboard/gpio_keys_polled.c | 3 ++- > drivers/leds/leds-gpio.c | 13 +++++++------ > drivers/video/fbdev/amba-clcd-nomadik.c | 12 ++++++++---- For fbdev part: Acked-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com> Best regards, -- Bartlomiej Zolnierkiewicz Samsung R&D Institute Poland Samsung Electronics > include/linux/gpio/consumer.h | 12 ++++++++---- > 7 files changed, 33 insertions(+), 20 deletions(-) > > diff --git a/drivers/gpio/devres.c b/drivers/gpio/devres.c > index 6d77b60..d196be7 100644 > --- a/drivers/gpio/devres.c > +++ b/drivers/gpio/devres.c > @@ -140,7 +140,8 @@ EXPORT_SYMBOL(devm_gpiod_get_index); > struct gpio_desc *devm_get_gpiod_from_child(struct device *dev, > const char *con_id, > struct fwnode_handle *child, > - enum gpiod_flags flags) > + enum gpiod_flags flags, > + const char *label) > { > char prop_name[32]; /* 32 is max size of property name */ > struct gpio_desc **dr; > @@ -160,7 +161,7 @@ struct gpio_desc *devm_get_gpiod_from_child(struct device *dev, > snprintf(prop_name, sizeof(prop_name), "%s", > gpio_suffixes[i]); > > - desc = fwnode_get_named_gpiod(child, prop_name, flags); > + desc = fwnode_get_named_gpiod(child, prop_name, flags, label); > if (!IS_ERR(desc) || (PTR_ERR(desc) != -ENOENT)) > break; > } > diff --git a/drivers/gpio/gpiolib.c b/drivers/gpio/gpiolib.c > index 46a4334..59d3d96 100644 > --- a/drivers/gpio/gpiolib.c > +++ b/drivers/gpio/gpiolib.c > @@ -3317,7 +3317,8 @@ EXPORT_SYMBOL_GPL(gpiod_get_index); > */ > struct gpio_desc *fwnode_get_named_gpiod(struct fwnode_handle *fwnode, > const char *propname, > - enum gpiod_flags dflags) > + enum gpiod_flags dflags, > + const char *label) > { > struct gpio_desc *desc = ERR_PTR(-ENODEV); > unsigned long lflags = 0; > @@ -3348,7 +3349,7 @@ struct gpio_desc *fwnode_get_named_gpiod(struct fwnode_handle *fwnode, > if (IS_ERR(desc)) > return desc; > > - ret = gpiod_request(desc, NULL); > + ret = gpiod_request(desc, label); > if (ret) > return ERR_PTR(ret); > > diff --git a/drivers/input/keyboard/gpio_keys.c b/drivers/input/keyboard/gpio_keys.c > index 9de4b87..2ec74d9 100644 > --- a/drivers/input/keyboard/gpio_keys.c > +++ b/drivers/input/keyboard/gpio_keys.c > @@ -481,7 +481,8 @@ static int gpio_keys_setup_key(struct platform_device *pdev, > spin_lock_init(&bdata->lock); > > if (child) { > - bdata->gpiod = devm_get_gpiod_from_child(dev, NULL, child, GPIOD_IN); > + bdata->gpiod = devm_get_gpiod_from_child(dev, NULL, child, > + GPIOD_IN, desc); > if (IS_ERR(bdata->gpiod)) { > error = PTR_ERR(bdata->gpiod); > if (error == -ENOENT) { > diff --git a/drivers/input/keyboard/gpio_keys_polled.c b/drivers/input/keyboard/gpio_keys_polled.c > index fd7ab4d..5e35c56 100644 > --- a/drivers/input/keyboard/gpio_keys_polled.c > +++ b/drivers/input/keyboard/gpio_keys_polled.c > @@ -305,7 +305,8 @@ static int gpio_keys_polled_probe(struct platform_device *pdev) > > bdata->gpiod = devm_get_gpiod_from_child(dev, NULL, > child, > - GPIOD_IN); > + GPIOD_IN, > + button->desc); > if (IS_ERR(bdata->gpiod)) { > error = PTR_ERR(bdata->gpiod); > if (error != -EPROBE_DEFER) > diff --git a/drivers/leds/leds-gpio.c b/drivers/leds/leds-gpio.c > index 00cc671..6c4825d 100644 > --- a/drivers/leds/leds-gpio.c > +++ b/drivers/leds/leds-gpio.c > @@ -174,12 +174,6 @@ static struct gpio_leds_priv *gpio_leds_create(struct platform_device *pdev) > const char *state = NULL; > struct device_node *np = to_of_node(child); > > - led.gpiod = devm_get_gpiod_from_child(dev, NULL, child, GPIOD_ASIS); > - if (IS_ERR(led.gpiod)) { > - fwnode_handle_put(child); > - return ERR_CAST(led.gpiod); > - } > - > ret = fwnode_property_read_string(child, "label", &led.name); > if (ret && IS_ENABLED(CONFIG_OF) && np) > led.name = np->name; > @@ -188,6 +182,13 @@ static struct gpio_leds_priv *gpio_leds_create(struct platform_device *pdev) > return ERR_PTR(-EINVAL); > } > > + led.gpiod = devm_get_gpiod_from_child(dev, NULL, child, > + GPIOD_ASIS, led.name); > + if (IS_ERR(led.gpiod)) { > + fwnode_handle_put(child); > + return ERR_CAST(led.gpiod); > + } > + > fwnode_property_read_string(child, "linux,default-trigger", > &led.default_trigger); > > diff --git a/drivers/video/fbdev/amba-clcd-nomadik.c b/drivers/video/fbdev/amba-clcd-nomadik.c > index 2e800d7..9175ad9 100644 > --- a/drivers/video/fbdev/amba-clcd-nomadik.c > +++ b/drivers/video/fbdev/amba-clcd-nomadik.c > @@ -185,22 +185,26 @@ static void tpg110_init(struct device *dev, struct device_node *np, > dev_info(dev, "TPG110 display init\n"); > > /* This asserts the GRESTB signal, putting the display into reset */ > - grestb = devm_get_gpiod_from_child(dev, "grestb", &np->fwnode, GPIOD_OUT_HIGH); > + grestb = devm_get_gpiod_from_child(dev, "grestb", &np->fwnode, > + GPIOD_OUT_HIGH, "grestb"); > if (IS_ERR(grestb)) { > dev_err(dev, "no GRESTB GPIO\n"); > return; > } > - scen = devm_get_gpiod_from_child(dev, "scen", &np->fwnode, GPIOD_OUT_LOW); > + scen = devm_get_gpiod_from_child(dev, "scen", &np->fwnode, > + GPIOD_OUT_LOW, "scen"); > if (IS_ERR(scen)) { > dev_err(dev, "no SCEN GPIO\n"); > return; > } > - scl = devm_get_gpiod_from_child(dev, "scl", &np->fwnode, GPIOD_OUT_LOW); > + scl = devm_get_gpiod_from_child(dev, "scl", &np->fwnode, GPIOD_OUT_LOW, > + "scl"); > if (IS_ERR(scl)) { > dev_err(dev, "no SCL GPIO\n"); > return; > } > - sda = devm_get_gpiod_from_child(dev, "sda", &np->fwnode, GPIOD_OUT_LOW); > + sda = devm_get_gpiod_from_child(dev, "sda", &np->fwnode, GPIOD_OUT_LOW, > + "sda"); > if (IS_ERR(sda)) { > dev_err(dev, "no SDA GPIO\n"); > return; > diff --git a/include/linux/gpio/consumer.h b/include/linux/gpio/consumer.h > index 930d100..80bad7e 100644 > --- a/include/linux/gpio/consumer.h > +++ b/include/linux/gpio/consumer.h > @@ -136,11 +136,13 @@ struct fwnode_handle; > > struct gpio_desc *fwnode_get_named_gpiod(struct fwnode_handle *fwnode, > const char *propname, > - enum gpiod_flags dflags); > + enum gpiod_flags dflags, > + const char *label); > struct gpio_desc *devm_get_gpiod_from_child(struct device *dev, > const char *con_id, > struct fwnode_handle *child, > - enum gpiod_flags flags); > + enum gpiod_flags flags, > + const char *label); > #else /* CONFIG_GPIOLIB */ > > static inline int gpiod_count(struct device *dev, const char *con_id) > @@ -416,7 +418,8 @@ struct fwnode_handle; > static inline > struct gpio_desc *fwnode_get_named_gpiod(struct fwnode_handle *fwnode, > const char *propname, > - enum gpiod_flags dflags) > + enum gpiod_flags dflags, > + const char *label) > { > return ERR_PTR(-ENOSYS); > } > @@ -425,7 +428,8 @@ static inline > struct gpio_desc *devm_get_gpiod_from_child(struct device *dev, > const char *con_id, > struct fwnode_handle *child, > - enum gpiod_flags flags) > + enum gpiod_flags flags, > + const char *label) > { > return ERR_PTR(-ENOSYS); > } -- To unsubscribe from this list: send the line "unsubscribe linux-gpio" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
On Thu, Jan 12, 2017 at 5:39 PM, Alexander Stein <alexander.stein@systec-electronic.com> wrote: > Currently all users of fwnode_get_named_gpiod() have no way to specify a > label for the GPIO. So GPIOs listed in debugfs are shown with label "?". > With this change a proper label is used. > Also adjust all users so they can pass a label, properly retrieved from > device tree properties. > > Signed-off-by: Alexander Stein <alexander.stein@systec-electronic.com> > CC: Andy Shevchenko <andriy.shevchenko@linux.intel.com> > CC: Jacek Anaszewski <jacek.anaszewski@gmail.com> > --- > v2: > * Non-RFC > * This patch is rebased on gpio/for-next branch and cherry-picked commit > 2715bbe from https://bitbucket.org/andy-shev/linux.git Patch applied on top of Andy's patch. Let's see if this all builds and works :) Yours, Linus Walleij -- To unsubscribe from this list: send the line "unsubscribe linux-gpio" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
Hi Linus, On Tue, Jan 17, 2017 at 4:07 PM, Linus Walleij <linus.walleij@linaro.org> wrote: > On Thu, Jan 12, 2017 at 5:39 PM, Alexander Stein > <alexander.stein@systec-electronic.com> wrote: > >> Currently all users of fwnode_get_named_gpiod() have no way to specify a >> label for the GPIO. So GPIOs listed in debugfs are shown with label "?". >> With this change a proper label is used. >> Also adjust all users so they can pass a label, properly retrieved from >> device tree properties. >> >> Signed-off-by: Alexander Stein <alexander.stein@systec-electronic.com> >> CC: Andy Shevchenko <andriy.shevchenko@linux.intel.com> >> CC: Jacek Anaszewski <jacek.anaszewski@gmail.com> >> --- >> v2: >> * Non-RFC >> * This patch is rebased on gpio/for-next branch and cherry-picked commit >> 2715bbe from https://bitbucket.org/andy-shev/linux.git > > Patch applied on top of Andy's patch. > > Let's see if this all builds and works :) Yes it does, thanks! -gpio-780 (?): gpiod_set_debounce: missing set() or set_debounce() operations +gpio-780 (SW30): gpiod_set_debounce: missing set() or set_debounce() operations Tested-by: Geert Uytterhoeven <geert+renesas@glider.be> Gr{oetje,eeting}s, Geert -- Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org In personal conversations with technical people, I call myself a hacker. But when I'm talking to journalists I just say "programmer" or something like that. -- Linus Torvalds -- To unsubscribe from this list: send the line "unsubscribe linux-gpio" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
On Tue, Jan 24, 2017 at 12:18 PM, Geert Uytterhoeven <geert@linux-m68k.org> wrote: > -gpio-780 (?): gpiod_set_debounce: missing set() or set_debounce() operations > +gpio-780 (SW30): gpiod_set_debounce: missing set() or set_debounce() operations And there is a special problem. I wanted, at one point, to take the timer-based debouncing code out of the GPIO keys input driver and make it into a generic fallback in gpiolib so that *any* GPIO controller could be made to provide debounce. I ran into some obstacle feelin it was impossible IIRC but do not remember what it was. Yours, Linus Walleij -- To unsubscribe from this list: send the line "unsubscribe linux-gpio" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
Hi Linus, On Thu, Jan 26, 2017 at 3:44 PM, Linus Walleij <linus.walleij@linaro.org> wrote: > On Tue, Jan 24, 2017 at 12:18 PM, Geert Uytterhoeven > <geert@linux-m68k.org> wrote: > >> -gpio-780 (?): gpiod_set_debounce: missing set() or set_debounce() operations >> +gpio-780 (SW30): gpiod_set_debounce: missing set() or set_debounce() operations > > And there is a special problem. > > I wanted, at one point, to take the timer-based debouncing code out of > the GPIO keys input driver and make it into a generic fallback in > gpiolib so that *any* GPIO controller could be made to provide > debounce. > > I ran into some obstacle feelin it was impossible IIRC but do not > remember what it was. Are these real problems? They are debug prints. Gr{oetje,eeting}s, Geert -- Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org In personal conversations with technical people, I call myself a hacker. But when I'm talking to journalists I just say "programmer" or something like that. -- Linus Torvalds -- To unsubscribe from this list: send the line "unsubscribe linux-gpio" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
diff --git a/drivers/gpio/devres.c b/drivers/gpio/devres.c index 6d77b60..d196be7 100644 --- a/drivers/gpio/devres.c +++ b/drivers/gpio/devres.c @@ -140,7 +140,8 @@ EXPORT_SYMBOL(devm_gpiod_get_index); struct gpio_desc *devm_get_gpiod_from_child(struct device *dev, const char *con_id, struct fwnode_handle *child, - enum gpiod_flags flags) + enum gpiod_flags flags, + const char *label) { char prop_name[32]; /* 32 is max size of property name */ struct gpio_desc **dr; @@ -160,7 +161,7 @@ struct gpio_desc *devm_get_gpiod_from_child(struct device *dev, snprintf(prop_name, sizeof(prop_name), "%s", gpio_suffixes[i]); - desc = fwnode_get_named_gpiod(child, prop_name, flags); + desc = fwnode_get_named_gpiod(child, prop_name, flags, label); if (!IS_ERR(desc) || (PTR_ERR(desc) != -ENOENT)) break; } diff --git a/drivers/gpio/gpiolib.c b/drivers/gpio/gpiolib.c index 46a4334..59d3d96 100644 --- a/drivers/gpio/gpiolib.c +++ b/drivers/gpio/gpiolib.c @@ -3317,7 +3317,8 @@ EXPORT_SYMBOL_GPL(gpiod_get_index); */ struct gpio_desc *fwnode_get_named_gpiod(struct fwnode_handle *fwnode, const char *propname, - enum gpiod_flags dflags) + enum gpiod_flags dflags, + const char *label) { struct gpio_desc *desc = ERR_PTR(-ENODEV); unsigned long lflags = 0; @@ -3348,7 +3349,7 @@ struct gpio_desc *fwnode_get_named_gpiod(struct fwnode_handle *fwnode, if (IS_ERR(desc)) return desc; - ret = gpiod_request(desc, NULL); + ret = gpiod_request(desc, label); if (ret) return ERR_PTR(ret); diff --git a/drivers/input/keyboard/gpio_keys.c b/drivers/input/keyboard/gpio_keys.c index 9de4b87..2ec74d9 100644 --- a/drivers/input/keyboard/gpio_keys.c +++ b/drivers/input/keyboard/gpio_keys.c @@ -481,7 +481,8 @@ static int gpio_keys_setup_key(struct platform_device *pdev, spin_lock_init(&bdata->lock); if (child) { - bdata->gpiod = devm_get_gpiod_from_child(dev, NULL, child, GPIOD_IN); + bdata->gpiod = devm_get_gpiod_from_child(dev, NULL, child, + GPIOD_IN, desc); if (IS_ERR(bdata->gpiod)) { error = PTR_ERR(bdata->gpiod); if (error == -ENOENT) { diff --git a/drivers/input/keyboard/gpio_keys_polled.c b/drivers/input/keyboard/gpio_keys_polled.c index fd7ab4d..5e35c56 100644 --- a/drivers/input/keyboard/gpio_keys_polled.c +++ b/drivers/input/keyboard/gpio_keys_polled.c @@ -305,7 +305,8 @@ static int gpio_keys_polled_probe(struct platform_device *pdev) bdata->gpiod = devm_get_gpiod_from_child(dev, NULL, child, - GPIOD_IN); + GPIOD_IN, + button->desc); if (IS_ERR(bdata->gpiod)) { error = PTR_ERR(bdata->gpiod); if (error != -EPROBE_DEFER) diff --git a/drivers/leds/leds-gpio.c b/drivers/leds/leds-gpio.c index 00cc671..6c4825d 100644 --- a/drivers/leds/leds-gpio.c +++ b/drivers/leds/leds-gpio.c @@ -174,12 +174,6 @@ static struct gpio_leds_priv *gpio_leds_create(struct platform_device *pdev) const char *state = NULL; struct device_node *np = to_of_node(child); - led.gpiod = devm_get_gpiod_from_child(dev, NULL, child, GPIOD_ASIS); - if (IS_ERR(led.gpiod)) { - fwnode_handle_put(child); - return ERR_CAST(led.gpiod); - } - ret = fwnode_property_read_string(child, "label", &led.name); if (ret && IS_ENABLED(CONFIG_OF) && np) led.name = np->name; @@ -188,6 +182,13 @@ static struct gpio_leds_priv *gpio_leds_create(struct platform_device *pdev) return ERR_PTR(-EINVAL); } + led.gpiod = devm_get_gpiod_from_child(dev, NULL, child, + GPIOD_ASIS, led.name); + if (IS_ERR(led.gpiod)) { + fwnode_handle_put(child); + return ERR_CAST(led.gpiod); + } + fwnode_property_read_string(child, "linux,default-trigger", &led.default_trigger); diff --git a/drivers/video/fbdev/amba-clcd-nomadik.c b/drivers/video/fbdev/amba-clcd-nomadik.c index 2e800d7..9175ad9 100644 --- a/drivers/video/fbdev/amba-clcd-nomadik.c +++ b/drivers/video/fbdev/amba-clcd-nomadik.c @@ -185,22 +185,26 @@ static void tpg110_init(struct device *dev, struct device_node *np, dev_info(dev, "TPG110 display init\n"); /* This asserts the GRESTB signal, putting the display into reset */ - grestb = devm_get_gpiod_from_child(dev, "grestb", &np->fwnode, GPIOD_OUT_HIGH); + grestb = devm_get_gpiod_from_child(dev, "grestb", &np->fwnode, + GPIOD_OUT_HIGH, "grestb"); if (IS_ERR(grestb)) { dev_err(dev, "no GRESTB GPIO\n"); return; } - scen = devm_get_gpiod_from_child(dev, "scen", &np->fwnode, GPIOD_OUT_LOW); + scen = devm_get_gpiod_from_child(dev, "scen", &np->fwnode, + GPIOD_OUT_LOW, "scen"); if (IS_ERR(scen)) { dev_err(dev, "no SCEN GPIO\n"); return; } - scl = devm_get_gpiod_from_child(dev, "scl", &np->fwnode, GPIOD_OUT_LOW); + scl = devm_get_gpiod_from_child(dev, "scl", &np->fwnode, GPIOD_OUT_LOW, + "scl"); if (IS_ERR(scl)) { dev_err(dev, "no SCL GPIO\n"); return; } - sda = devm_get_gpiod_from_child(dev, "sda", &np->fwnode, GPIOD_OUT_LOW); + sda = devm_get_gpiod_from_child(dev, "sda", &np->fwnode, GPIOD_OUT_LOW, + "sda"); if (IS_ERR(sda)) { dev_err(dev, "no SDA GPIO\n"); return; diff --git a/include/linux/gpio/consumer.h b/include/linux/gpio/consumer.h index 930d100..80bad7e 100644 --- a/include/linux/gpio/consumer.h +++ b/include/linux/gpio/consumer.h @@ -136,11 +136,13 @@ struct fwnode_handle; struct gpio_desc *fwnode_get_named_gpiod(struct fwnode_handle *fwnode, const char *propname, - enum gpiod_flags dflags); + enum gpiod_flags dflags, + const char *label); struct gpio_desc *devm_get_gpiod_from_child(struct device *dev, const char *con_id, struct fwnode_handle *child, - enum gpiod_flags flags); + enum gpiod_flags flags, + const char *label); #else /* CONFIG_GPIOLIB */ static inline int gpiod_count(struct device *dev, const char *con_id) @@ -416,7 +418,8 @@ struct fwnode_handle; static inline struct gpio_desc *fwnode_get_named_gpiod(struct fwnode_handle *fwnode, const char *propname, - enum gpiod_flags dflags) + enum gpiod_flags dflags, + const char *label) { return ERR_PTR(-ENOSYS); } @@ -425,7 +428,8 @@ static inline struct gpio_desc *devm_get_gpiod_from_child(struct device *dev, const char *con_id, struct fwnode_handle *child, - enum gpiod_flags flags) + enum gpiod_flags flags, + const char *label) { return ERR_PTR(-ENOSYS); }
Currently all users of fwnode_get_named_gpiod() have no way to specify a label for the GPIO. So GPIOs listed in debugfs are shown with label "?". With this change a proper label is used. Also adjust all users so they can pass a label, properly retrieved from device tree properties. Signed-off-by: Alexander Stein <alexander.stein@systec-electronic.com> CC: Andy Shevchenko <andriy.shevchenko@linux.intel.com> CC: Jacek Anaszewski <jacek.anaszewski@gmail.com> --- v2: * Non-RFC * This patch is rebased on gpio/for-next branch and cherry-picked commit 2715bbe from https://bitbucket.org/andy-shev/linux.git drivers/gpio/devres.c | 5 +++-- drivers/gpio/gpiolib.c | 5 +++-- drivers/input/keyboard/gpio_keys.c | 3 ++- drivers/input/keyboard/gpio_keys_polled.c | 3 ++- drivers/leds/leds-gpio.c | 13 +++++++------ drivers/video/fbdev/amba-clcd-nomadik.c | 12 ++++++++---- include/linux/gpio/consumer.h | 12 ++++++++---- 7 files changed, 33 insertions(+), 20 deletions(-)