summaryrefslogtreecommitdiffstats
path: root/drivers/pinctrl
diff options
context:
space:
mode:
authorQuentin Schulz <quentin.schulz@free-electrons.com>2017-12-05 15:46:46 +0100
committerLinus Walleij <linus.walleij@linaro.org>2017-12-07 10:08:12 +0100
commite1190083b89bd0d53c83b647ff313d9f004c6772 (patch)
tree7526e7e9f2ddfdc5e79b3a7cd0ec952db8f44d12 /drivers/pinctrl
parenta0a4b4c2420e0af6171a2be1965bdd983d35953c (diff)
downloadlinux-e1190083b89bd0d53c83b647ff313d9f004c6772.tar.bz2
pinctrl: axp209: add support for AXP813 GPIOs
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> Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com> Acked-by: Rob Herring <robh@kernel.org> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Diffstat (limited to 'drivers/pinctrl')
-rw-r--r--drivers/pinctrl/pinctrl-axp209.c35
1 files changed, 27 insertions, 8 deletions
diff --git a/drivers/pinctrl/pinctrl-axp209.c b/drivers/pinctrl/pinctrl-axp209.c
index 9bb8722ba90f..22d3bb0bf927 100644
--- a/drivers/pinctrl/pinctrl-axp209.c
+++ b/drivers/pinctrl/pinctrl-axp209.c
@@ -19,6 +19,7 @@
#include <linux/mfd/axp20x.h>
#include <linux/module.h>
#include <linux/of.h>
+#include <linux/of_device.h>
#include <linux/pinctrl/pinconf-generic.h>
#include <linux/pinctrl/pinctrl.h>
#include <linux/pinctrl/pinmux.h>
@@ -41,6 +42,8 @@
#define AXP20X_MUX_GPIO_IN BIT(1)
#define AXP20X_MUX_ADC BIT(2)
+#define AXP813_MUX_ADC (BIT(2) | BIT(0))
+
struct axp20x_pctrl_desc {
const struct pinctrl_pin_desc *pins;
unsigned int npins;
@@ -74,6 +77,11 @@ static const struct pinctrl_pin_desc axp209_pins[] = {
PINCTRL_PIN(2, "GPIO2"),
};
+static const struct pinctrl_pin_desc axp813_pins[] = {
+ PINCTRL_PIN(0, "GPIO0"),
+ PINCTRL_PIN(1, "GPIO1"),
+};
+
static const struct axp20x_pctrl_desc axp20x_data = {
.pins = axp209_pins,
.npins = ARRAY_SIZE(axp209_pins),
@@ -83,6 +91,15 @@ static const struct axp20x_pctrl_desc axp20x_data = {
.adc_mux = AXP20X_MUX_ADC,
};
+static const struct axp20x_pctrl_desc axp813_data = {
+ .pins = axp813_pins,
+ .npins = ARRAY_SIZE(axp813_pins),
+ .ldo_mask = BIT(0) | BIT(1),
+ .adc_mask = BIT(0),
+ .gpio_status_offset = 0,
+ .adc_mux = AXP813_MUX_ADC,
+};
+
static int axp20x_gpio_get_reg(unsigned int offset)
{
switch (offset) {
@@ -357,10 +374,18 @@ static void axp20x_build_funcs_groups(struct platform_device *pdev)
pctl->desc->pins);
}
+static const struct of_device_id axp20x_pctl_match[] = {
+ { .compatible = "x-powers,axp209-gpio", .data = &axp20x_data, },
+ { .compatible = "x-powers,axp813-gpio", .data = &axp813_data, },
+ { }
+};
+MODULE_DEVICE_TABLE(of, axp20x_pctl_match);
+
static int axp20x_pctl_probe(struct platform_device *pdev)
{
struct axp20x_dev *axp20x = dev_get_drvdata(pdev->dev.parent);
struct axp20x_pctl *pctl;
+ struct device *dev = &pdev->dev;
struct pinctrl_desc *pctrl_desc;
int ret;
@@ -388,9 +413,9 @@ 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->chip.ngpio = pctl->desc->npins;
- pctl->desc = &axp20x_data;
+ pctl->desc = (struct axp20x_pctrl_desc *)of_device_get_match_data(dev);
pctl->regmap = axp20x->regmap;
pctl->dev = &pdev->dev;
@@ -435,12 +460,6 @@ static int axp20x_pctl_probe(struct platform_device *pdev)
return 0;
}
-static const struct of_device_id axp20x_pctl_match[] = {
- { .compatible = "x-powers,axp209-gpio" },
- { }
-};
-MODULE_DEVICE_TABLE(of, axp20x_pctl_match);
-
static struct platform_driver axp20x_pctl_driver = {
.probe = axp20x_pctl_probe,
.driver = {