1 files changed, 53 insertions, 0 deletions

diff --git a/drivers/pinctrl/qcom/pinctrl-msm.c b/drivers/pinctrl/qcom/pinctrl-msm.c
index 2155a30c282b..cad74093f7ba 100644
--- a/drivers/pinctrl/qcom/pinctrl-msm.c
+++ b/drivers/pinctrl/qcom/pinctrl-msm.c
@@ -176,11 +176,27 @@ static int msm_pinmux_set_mux(struct pinctrl_dev *pctldev,
 	return 0;
 }
 
+static int msm_pinmux_request_gpio(struct pinctrl_dev *pctldev,
+				   struct pinctrl_gpio_range *range,
+				   unsigned offset)
+{
+	struct msm_pinctrl *pctrl = pinctrl_dev_get_drvdata(pctldev);
+	const struct msm_pingroup *g = &pctrl->soc->groups[offset];
+
+	/* No funcs? Probably ACPI so can't do anything here */
+	if (!g->nfuncs)
+		return 0;
+
+	/* For now assume function 0 is GPIO because it always is */
+	return msm_pinmux_set_mux(pctldev, 0, offset);
+}
+
 static const struct pinmux_ops msm_pinmux_ops = {
 	.request		= msm_pinmux_request,
 	.get_functions_count	= msm_get_functions_count,
 	.get_function_name	= msm_get_function_name,
 	.get_function_groups	= msm_get_function_groups,
+	.gpio_request_enable	= msm_pinmux_request_gpio,
 	.set_mux		= msm_pinmux_set_mux,
 };
 
@@ -797,6 +813,41 @@ static int msm_gpio_irq_set_wake(struct irq_data *d, unsigned int on)
 	return 0;
 }
 
+static int msm_gpio_irq_reqres(struct irq_data *d)
+{
+	struct gpio_chip *gc = irq_data_get_irq_chip_data(d);
+	struct msm_pinctrl *pctrl = gpiochip_get_data(gc);
+	int ret;
+
+	if (!try_module_get(gc->owner))
+		return -ENODEV;
+
+	ret = msm_pinmux_request_gpio(pctrl->pctrl, NULL, d->hwirq);
+	if (ret)
+		goto out;
+	msm_gpio_direction_input(gc, d->hwirq);
+
+	if (gpiochip_lock_as_irq(gc, d->hwirq)) {
+		dev_err(gc->parent,
+			"unable to lock HW IRQ %lu for IRQ\n",
+			d->hwirq);
+		ret = -EINVAL;
+		goto out;
+	}
+	return 0;
+out:
+	module_put(gc->owner);
+	return ret;
+}
+
+static void msm_gpio_irq_relres(struct irq_data *d)
+{
+	struct gpio_chip *gc = irq_data_get_irq_chip_data(d);
+
+	gpiochip_unlock_as_irq(gc, d->hwirq);
+	module_put(gc->owner);
+}
+
 static void msm_gpio_irq_handler(struct irq_desc *desc)
 {
 	struct gpio_chip *gc = irq_desc_get_handler_data(desc);
@@ -895,6 +946,8 @@ static int msm_gpio_init(struct msm_pinctrl *pctrl)
 	pctrl->irq_chip.irq_ack = msm_gpio_irq_ack;
 	pctrl->irq_chip.irq_set_type = msm_gpio_irq_set_type;
 	pctrl->irq_chip.irq_set_wake = msm_gpio_irq_set_wake;
+	pctrl->irq_chip.irq_request_resources = msm_gpio_irq_reqres;
+	pctrl->irq_chip.irq_release_resources = msm_gpio_irq_relres;
 
 	ret = gpiochip_add_data(&pctrl->chip, pctrl);
 	if (ret) {