[PATCH AUTOSEL 5.6 152/606] pinctrl: qcom: Add affinity callbacks to msmgpio IRQ chip

[Sasha Levin]

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

commit dca4f40742e09ec5d908a7fc2862498e6cf9d911 upstream.

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>
Tested-by: Douglas Anderson <diand...@chromium.org>
Reviewed-by: Stephen Boyd <swb...@chromium.org>
Link: 
https://lore.kernel.org/r/1588314617-4556-1-git-send-email-mks...@codeaurora.org
Signed-off-by: Linus Walleij <linus.wall...@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gre...@linuxfoundation.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 9f1c9951949e..14a8f8fa0ea3 100644
--- a/drivers/pinctrl/qcom/pinctrl-msm.c
+++ b/drivers/pinctrl/qcom/pinctrl-msm.c
@@ -1010,6 +1010,29 @@ 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);
@@ -1108,6 +1131,8 @@ 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) {
-- 
2.25.1