[PATCH] pinctrl: qcom: Add affinity callbacks to msmgpio IRQ chip

[Maulik Shah]

From: Venkata Narendra Kumar Gutta <vnkgu...@codeaurora.org>

Wakeup capable GPIO IRQs routed via PDC are not being migrated when a CPU
is hotplugged. Add affinity callbacks to msmgpio IRQ chip to update the
affinity of wakeup capable IRQs.

Fixes: e35a6ae0eb3a ("pinctrl/msm: Setup GPIO chip in hierarchy")
Signed-off-by: Venkata Narendra Kumar Gutta <vnkgu...@codeaurora.org>
[mkshah: updated commit text and minor code fixes]
Signed-off-by: Maulik Shah <mks...@codeaurora.org>
---
 drivers/pinctrl/qcom/pinctrl-msm.c | 25 +++++++++++++++++++++++++
 1 file changed, 25 insertions(+)

diff --git a/drivers/pinctrl/qcom/pinctrl-msm.c 
b/drivers/pinctrl/qcom/pinctrl-msm.c
index 29259fe..83b7d64 100644
--- a/drivers/pinctrl/qcom/pinctrl-msm.c
+++ b/drivers/pinctrl/qcom/pinctrl-msm.c
@@ -1033,6 +1033,29 @@ static void msm_gpio_irq_relres(struct irq_data *d)
        module_put(gc->owner);
 }
 
+static int msm_gpio_irq_set_affinity(struct irq_data *d,
+                               const struct cpumask *dest, bool force)
+{
+       struct gpio_chip *gc = irq_data_get_irq_chip_data(d);
+       struct msm_pinctrl *pctrl = gpiochip_get_data(gc);
+
+       if (d->parent_data && test_bit(d->hwirq, pctrl->skip_wake_irqs))
+               return irq_chip_set_affinity_parent(d, dest, force);
+
+       return 0;
+}
+
+static int msm_gpio_irq_set_vcpu_affinity(struct irq_data *d, void *vcpu_info)
+{
+       struct gpio_chip *gc = irq_data_get_irq_chip_data(d);
+       struct msm_pinctrl *pctrl = gpiochip_get_data(gc);
+
+       if (d->parent_data && test_bit(d->hwirq, pctrl->skip_wake_irqs))
+               return irq_chip_set_vcpu_affinity_parent(d, vcpu_info);
+
+       return 0;
+}
+
 static void msm_gpio_irq_handler(struct irq_desc *desc)
 {
        struct gpio_chip *gc = irq_desc_get_handler_data(desc);
@@ -1131,6 +1154,8 @@ static int msm_gpio_init(struct msm_pinctrl *pctrl)
        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;
+       pctrl->irq_chip.irq_set_affinity = msm_gpio_irq_set_affinity;
+       pctrl->irq_chip.irq_set_vcpu_affinity = msm_gpio_irq_set_vcpu_affinity;
 
        np = of_parse_phandle(pctrl->dev->of_node, "wakeup-parent", 0);
        if (np) {
-- 
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