| Message ID | b950efcbb2f4d399812591cdf5dce11d0d35b42b.1506428208.git-series.quentin.schulz@free-electrons.com |
|---|---|
| State | New |
| Headers | show |
| Series | add pinmuxing support for pins in AXP209 and AXP813 PMICs | expand |
On Tue, Sep 26, 2017 at 12:17:16PM +0000, Quentin Schulz wrote: > The AXP813 has only two GPIOs. GPIO0 can either be used as a GPIO, an > LDO regulator or an ADC. GPIO1 can be used either as a GPIO or an LDO > regulator. > > Moreover, the status bit of the GPIOs when in input mode is not offset > by 4 unlike the AXP209. > > Signed-off-by: Quentin Schulz <quentin.schulz@free-electrons.com> > --- > Documentation/devicetree/bindings/pinctrl/pinctrl-axp209.txt | 13 ++- > drivers/pinctrl/pinctrl-axp209.c | 30 ++++++- > 2 files changed, 39 insertions(+), 4 deletions(-) > > diff --git a/Documentation/devicetree/bindings/pinctrl/pinctrl-axp209.txt b/Documentation/devicetree/bindings/pinctrl/pinctrl-axp209.txt > index a5bfe87..a1d5dec 100644 > --- a/Documentation/devicetree/bindings/pinctrl/pinctrl-axp209.txt > +++ b/Documentation/devicetree/bindings/pinctrl/pinctrl-axp209.txt > @@ -4,7 +4,9 @@ This driver follows the usual GPIO bindings found in > Documentation/devicetree/bindings/gpio/gpio.txt > > Required properties: > -- compatible: Should be "x-powers,axp209-gpio" > +- compatible: Should be one of: > + - "x-powers,axp209-gpio" > + - "x-powers,axp813-pctl" > - #gpio-cells: Should be two. The first cell is the pin number and the > second is the GPIO flags. > - gpio-controller: Marks the device node as a GPIO controller. > @@ -49,8 +51,17 @@ Example: > GPIOs and their functions > ------------------------- > > +axp209 > +------ > GPIO | Functions > ------------------------ > GPIO0 | gpio_in, gpio_out, ldo, adc > GPIO1 | gpio_in, gpio_out, ldo, adc > GPIO2 | gpio_in, gpio_out > + > +axp813 > +------ > +GPIO | Functions > +------------------------ > +GPIO0 | gpio_in, gpio_out, ldo, adc > +GPIO1 | gpio_in, gpio_out, ldo > diff --git a/drivers/pinctrl/pinctrl-axp209.c b/drivers/pinctrl/pinctrl-axp209.c > index 11f871e..500862b 100644 > --- a/drivers/pinctrl/pinctrl-axp209.c > +++ b/drivers/pinctrl/pinctrl-axp209.c > @@ -108,11 +108,28 @@ static const struct axp20x_desc_pin axp209_pins[] = { > AXP20X_FUNCTION(0x2, "gpio_in")), > }; > > +static const struct axp20x_desc_pin axp813_pins[] = { > + AXP20X_PIN(AXP20X_PINCTRL_PIN(0, "GPIO0", (void *)AXP20X_GPIO0_CTRL), > + AXP20X_FUNCTION(0x0, "gpio_out"), > + AXP20X_FUNCTION(0x2, "gpio_in"), > + AXP20X_FUNCTION(0x3, "ldo"), > + AXP20X_FUNCTION(0x4, "adc")), > + AXP20X_PIN(AXP20X_PINCTRL_PIN(1, "GPIO1", (void *)AXP20X_GPIO1_CTRL), > + AXP20X_FUNCTION(0x0, "gpio_out"), > + AXP20X_FUNCTION(0x2, "gpio_in"), > + AXP20X_FUNCTION(0x3, "ldo")), > +}; > + > static const struct axp20x_pinctrl_desc axp20x_pinctrl_data = { > .pins = axp209_pins, > .npins = ARRAY_SIZE(axp209_pins), > }; > > +static const struct axp20x_pinctrl_desc axp813_pinctrl_data = { > + .pins = axp813_pins, > + .npins = ARRAY_SIZE(axp813_pins), > +}; > + > static int axp20x_gpio_input(struct gpio_chip *chip, unsigned offset) > { > return pinctrl_gpio_direction_input(chip->base + offset); > @@ -479,6 +496,7 @@ static int axp20x_pctl_probe(struct platform_device *pdev) > struct axp20x_pctl *pctl; > struct pinctrl_desc *pctrl_desc; > struct pinctrl_pin_desc *pins; > + struct device_node *np = pdev->dev.of_node; > int ret, i; > > if (!of_device_is_available(pdev->dev.of_node)) > @@ -505,13 +523,18 @@ static int axp20x_pctl_probe(struct platform_device *pdev) > pctl->chip.set = axp20x_gpio_set; > pctl->chip.direction_input = axp20x_gpio_input; > pctl->chip.direction_output = axp20x_gpio_output; > - pctl->chip.ngpio = 3; > > pctl->regmap = axp20x->regmap; > > - pctl->desc = &axp20x_pinctrl_data; > - pctl->gpio_status_offset = 4; > + if (of_device_is_compatible(np, "x-powers,axp209-gpio")) { > + pctl->desc = &axp20x_pinctrl_data; > + pctl->gpio_status_offset = 4; > + } else { > + pctl->desc = &axp813_pinctrl_data; > + pctl->gpio_status_offset = 0; > + } > pctl->dev = &pdev->dev; > + pctl->chip.ngpio = pctl->desc->npins; This should be part of a structure that would be attached to the compatible. Thanks! Maxime
diff --git a/Documentation/devicetree/bindings/pinctrl/pinctrl-axp209.txt b/Documentation/devicetree/bindings/pinctrl/pinctrl-axp209.txt index a5bfe87..a1d5dec 100644 --- a/Documentation/devicetree/bindings/pinctrl/pinctrl-axp209.txt +++ b/Documentation/devicetree/bindings/pinctrl/pinctrl-axp209.txt @@ -4,7 +4,9 @@ This driver follows the usual GPIO bindings found in Documentation/devicetree/bindings/gpio/gpio.txt Required properties: -- compatible: Should be "x-powers,axp209-gpio" +- compatible: Should be one of: + - "x-powers,axp209-gpio" + - "x-powers,axp813-pctl" - #gpio-cells: Should be two. The first cell is the pin number and the second is the GPIO flags. - gpio-controller: Marks the device node as a GPIO controller. @@ -49,8 +51,17 @@ Example: GPIOs and their functions ------------------------- +axp209 +------ GPIO | Functions ------------------------ GPIO0 | gpio_in, gpio_out, ldo, adc GPIO1 | gpio_in, gpio_out, ldo, adc GPIO2 | gpio_in, gpio_out + +axp813 +------ +GPIO | Functions +------------------------ +GPIO0 | gpio_in, gpio_out, ldo, adc +GPIO1 | gpio_in, gpio_out, ldo diff --git a/drivers/pinctrl/pinctrl-axp209.c b/drivers/pinctrl/pinctrl-axp209.c index 11f871e..500862b 100644 --- a/drivers/pinctrl/pinctrl-axp209.c +++ b/drivers/pinctrl/pinctrl-axp209.c @@ -108,11 +108,28 @@ static const struct axp20x_desc_pin axp209_pins[] = { AXP20X_FUNCTION(0x2, "gpio_in")), }; +static const struct axp20x_desc_pin axp813_pins[] = { + AXP20X_PIN(AXP20X_PINCTRL_PIN(0, "GPIO0", (void *)AXP20X_GPIO0_CTRL), + AXP20X_FUNCTION(0x0, "gpio_out"), + AXP20X_FUNCTION(0x2, "gpio_in"), + AXP20X_FUNCTION(0x3, "ldo"), + AXP20X_FUNCTION(0x4, "adc")), + AXP20X_PIN(AXP20X_PINCTRL_PIN(1, "GPIO1", (void *)AXP20X_GPIO1_CTRL), + AXP20X_FUNCTION(0x0, "gpio_out"), + AXP20X_FUNCTION(0x2, "gpio_in"), + AXP20X_FUNCTION(0x3, "ldo")), +}; + static const struct axp20x_pinctrl_desc axp20x_pinctrl_data = { .pins = axp209_pins, .npins = ARRAY_SIZE(axp209_pins), }; +static const struct axp20x_pinctrl_desc axp813_pinctrl_data = { + .pins = axp813_pins, + .npins = ARRAY_SIZE(axp813_pins), +}; + static int axp20x_gpio_input(struct gpio_chip *chip, unsigned offset) { return pinctrl_gpio_direction_input(chip->base + offset); @@ -479,6 +496,7 @@ static int axp20x_pctl_probe(struct platform_device *pdev) struct axp20x_pctl *pctl; struct pinctrl_desc *pctrl_desc; struct pinctrl_pin_desc *pins; + struct device_node *np = pdev->dev.of_node; int ret, i; if (!of_device_is_available(pdev->dev.of_node)) @@ -505,13 +523,18 @@ static int axp20x_pctl_probe(struct platform_device *pdev) pctl->chip.set = axp20x_gpio_set; pctl->chip.direction_input = axp20x_gpio_input; pctl->chip.direction_output = axp20x_gpio_output; - pctl->chip.ngpio = 3; pctl->regmap = axp20x->regmap; - pctl->desc = &axp20x_pinctrl_data; - pctl->gpio_status_offset = 4; + if (of_device_is_compatible(np, "x-powers,axp209-gpio")) { + pctl->desc = &axp20x_pinctrl_data; + pctl->gpio_status_offset = 4; + } else { + pctl->desc = &axp813_pinctrl_data; + pctl->gpio_status_offset = 0; + } pctl->dev = &pdev->dev; + pctl->chip.ngpio = pctl->desc->npins; platform_set_drvdata(pdev, pctl); @@ -566,6 +589,7 @@ static int axp20x_pctl_probe(struct platform_device *pdev) static const struct of_device_id axp20x_pctl_match[] = { { .compatible = "x-powers,axp209-gpio" }, + { .compatible = "x-powers,axp813-pctl" }, { } }; MODULE_DEVICE_TABLE(of, axp20x_pctl_match);
The AXP813 has only two GPIOs. GPIO0 can either be used as a GPIO, an LDO regulator or an ADC. GPIO1 can be used either as a GPIO or an LDO regulator. Moreover, the status bit of the GPIOs when in input mode is not offset by 4 unlike the AXP209. Signed-off-by: Quentin Schulz <quentin.schulz@free-electrons.com> --- Documentation/devicetree/bindings/pinctrl/pinctrl-axp209.txt | 13 ++- drivers/pinctrl/pinctrl-axp209.c | 30 ++++++- 2 files changed, 39 insertions(+), 4 deletions(-)