1 files changed, 93 insertions, 18 deletions

diff --git a/drivers/pinctrl/qcom/pinctrl-ssbi-mpp.c b/drivers/pinctrl/qcom/pinctrl-ssbi-mpp.c
index a90cada1d657..842940594c4a 100644
--- a/drivers/pinctrl/qcom/pinctrl-ssbi-mpp.c
+++ b/drivers/pinctrl/qcom/pinctrl-ssbi-mpp.c
@@ -87,7 +87,6 @@
 /**
  * struct pm8xxx_pin_data - dynamic configuration for a pin
  * @reg:		address of the control register
- * @irq:		IRQ from the PMIC interrupt controller
  * @mode:		operating mode for the pin (digital, analog or current sink)
  * @input:		pin is input
  * @output:		pin is output
@@ -103,7 +102,6 @@
  */
 struct pm8xxx_pin_data {
 	unsigned reg;
-	int irq;
 
 	u8 mode;
 
@@ -126,6 +124,7 @@ struct pm8xxx_mpp {
 	struct regmap *regmap;
 	struct pinctrl_dev *pctrl;
 	struct gpio_chip chip;
+	struct irq_chip irq;
 
 	struct pinctrl_desc desc;
 	unsigned npins;
@@ -148,6 +147,8 @@ static const struct pin_config_item pm8xxx_conf_items[] = {
 #endif
 
 #define PM8XXX_MAX_MPPS	12
+#define PM8XXX_MPP_PHYSICAL_OFFSET    1
+
 static const char * const pm8xxx_groups[PM8XXX_MAX_MPPS] = {
 	"mpp1", "mpp2", "mpp3", "mpp4", "mpp5", "mpp6", "mpp7", "mpp8",
 	"mpp9", "mpp10", "mpp11", "mpp12",
@@ -492,12 +493,16 @@ static int pm8xxx_mpp_get(struct gpio_chip *chip, unsigned offset)
 	struct pm8xxx_mpp *pctrl = gpiochip_get_data(chip);
 	struct pm8xxx_pin_data *pin = pctrl->desc.pins[offset].drv_data;
 	bool state;
-	int ret;
+	int ret, irq;
 
 	if (!pin->input)
 		return !!pin->output_value;
 
-	ret = irq_get_irqchip_state(pin->irq, IRQCHIP_STATE_LINE_LEVEL, &state);
+	irq = chip->to_irq(chip, offset);
+	if (irq < 0)
+		return irq;
+
+	ret = irq_get_irqchip_state(irq, IRQCHIP_STATE_LINE_LEVEL, &state);
 	if (!ret)
 		ret = !!state;
 
@@ -524,18 +529,10 @@ static int pm8xxx_mpp_of_xlate(struct gpio_chip *chip,
 	if (flags)
 		*flags = gpio_desc->args[1];
 
-	return gpio_desc->args[0] - 1;
+	return gpio_desc->args[0] - PM8XXX_MPP_PHYSICAL_OFFSET;
 }
 
 
-static int pm8xxx_mpp_to_irq(struct gpio_chip *chip, unsigned offset)
-{
-	struct pm8xxx_mpp *pctrl = gpiochip_get_data(chip);
-	struct pm8xxx_pin_data *pin = pctrl->desc.pins[offset].drv_data;
-
-	return pin->irq;
-}
-
 #ifdef CONFIG_DEBUG_FS
 #include <linux/seq_file.h>
 
@@ -558,7 +555,7 @@ static void pm8xxx_mpp_dbg_show_one(struct seq_file *s,
 		"abus3",
 	};
 
-	seq_printf(s, " mpp%-2d:", offset + 1);
+	seq_printf(s, " mpp%-2d:", offset + PM8XXX_MPP_PHYSICAL_OFFSET);
 
 	switch (pin->mode) {
 	case PM8XXX_MPP_DIGITAL:
@@ -640,7 +637,6 @@ static const struct gpio_chip pm8xxx_mpp_template = {
 	.get = pm8xxx_mpp_get,
 	.set = pm8xxx_mpp_set,
 	.of_xlate = pm8xxx_mpp_of_xlate,
-	.to_irq = pm8xxx_mpp_to_irq,
 	.dbg_show = pm8xxx_mpp_dbg_show,
 	.owner = THIS_MODULE,
 };
@@ -732,6 +728,55 @@ static int pm8xxx_pin_populate(struct pm8xxx_mpp *pctrl,
 	return 0;
 }
 
+static int pm8xxx_mpp_domain_translate(struct irq_domain *domain,
+				   struct irq_fwspec *fwspec,
+				   unsigned long *hwirq,
+				   unsigned int *type)
+{
+	struct pm8xxx_mpp *pctrl = container_of(domain->host_data,
+						 struct pm8xxx_mpp, chip);
+
+	if (fwspec->param_count != 2 ||
+	    fwspec->param[0] < PM8XXX_MPP_PHYSICAL_OFFSET ||
+	    fwspec->param[0] > pctrl->chip.ngpio)
+		return -EINVAL;
+
+	*hwirq = fwspec->param[0] - PM8XXX_MPP_PHYSICAL_OFFSET;
+	*type = fwspec->param[1];
+
+	return 0;
+}
+
+static unsigned int pm8xxx_mpp_child_offset_to_irq(struct gpio_chip *chip,
+						   unsigned int offset)
+{
+	return offset + PM8XXX_MPP_PHYSICAL_OFFSET;
+}
+
+static int pm8821_mpp_child_to_parent_hwirq(struct gpio_chip *chip,
+					    unsigned int child_hwirq,
+					    unsigned int child_type,
+					    unsigned int *parent_hwirq,
+					    unsigned int *parent_type)
+{
+	*parent_hwirq = child_hwirq + 24;
+	*parent_type = child_type;
+
+	return 0;
+}
+
+static int pm8xxx_mpp_child_to_parent_hwirq(struct gpio_chip *chip,
+					    unsigned int child_hwirq,
+					    unsigned int child_type,
+					    unsigned int *parent_hwirq,
+					    unsigned int *parent_type)
+{
+	*parent_hwirq = child_hwirq + 0x80;
+	*parent_type = child_type;
+
+	return 0;
+}
+
 static const struct of_device_id pm8xxx_mpp_of_match[] = {
 	{ .compatible = "qcom,pm8018-mpp", .data = (void *) 6 },
 	{ .compatible = "qcom,pm8038-mpp", .data = (void *) 6 },
@@ -746,7 +791,10 @@ MODULE_DEVICE_TABLE(of, pm8xxx_mpp_of_match);
 static int pm8xxx_mpp_probe(struct platform_device *pdev)
 {
 	struct pm8xxx_pin_data *pin_data;
+	struct irq_domain *parent_domain;
+	struct device_node *parent_node;
 	struct pinctrl_pin_desc *pins;
+	struct gpio_irq_chip *girq;
 	struct pm8xxx_mpp *pctrl;
 	int ret;
 	int i;
@@ -783,9 +831,6 @@ static int pm8xxx_mpp_probe(struct platform_device *pdev)
 
 	for (i = 0; i < pctrl->desc.npins; i++) {
 		pin_data[i].reg = SSBI_REG_ADDR_MPP(i);
-		pin_data[i].irq = platform_get_irq(pdev, i);
-		if (pin_data[i].irq < 0)
-			return pin_data[i].irq;
 
 		ret = pm8xxx_pin_populate(pctrl, &pin_data[i]);
 		if (ret)
@@ -816,6 +861,36 @@ static int pm8xxx_mpp_probe(struct platform_device *pdev)
 	pctrl->chip.of_gpio_n_cells = 2;
 	pctrl->chip.label = dev_name(pctrl->dev);
 	pctrl->chip.ngpio = pctrl->npins;
+
+	parent_node = of_irq_find_parent(pctrl->dev->of_node);
+	if (!parent_node)
+		return -ENXIO;
+
+	parent_domain = irq_find_host(parent_node);
+	of_node_put(parent_node);
+	if (!parent_domain)
+		return -ENXIO;
+
+	pctrl->irq.name = "ssbi-mpp";
+	pctrl->irq.irq_mask_ack = irq_chip_mask_ack_parent;
+	pctrl->irq.irq_unmask = irq_chip_unmask_parent;
+	pctrl->irq.irq_set_type = irq_chip_set_type_parent;
+	pctrl->irq.flags = IRQCHIP_MASK_ON_SUSPEND | IRQCHIP_SKIP_SET_WAKE;
+
+	girq = &pctrl->chip.irq;
+	girq->chip = &pctrl->irq;
+	girq->default_type = IRQ_TYPE_NONE;
+	girq->handler = handle_level_irq;
+	girq->fwnode = of_node_to_fwnode(pctrl->dev->of_node);
+	girq->parent_domain = parent_domain;
+	if (of_device_is_compatible(pdev->dev.of_node, "qcom,pm8821-mpp"))
+		girq->child_to_parent_hwirq = pm8821_mpp_child_to_parent_hwirq;
+	else
+		girq->child_to_parent_hwirq = pm8xxx_mpp_child_to_parent_hwirq;
+	girq->populate_parent_alloc_arg = gpiochip_populate_parent_fwspec_twocell;
+	girq->child_offset_to_irq = pm8xxx_mpp_child_offset_to_irq;
+	girq->child_irq_domain_ops.translate = pm8xxx_mpp_domain_translate;
+
 	ret = gpiochip_add_data(&pctrl->chip, pctrl);
 	if (ret) {
 		dev_err(&pdev->dev, "failed register gpiochip\n");