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.sch...@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;
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);
--
git-series 0.9.1
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