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authorMaxime Ripard <maxime.ripard@free-electrons.com>2015-07-27 15:41:57 +0300
committerLinus Walleij <linus.walleij@linaro.org>2015-07-27 15:56:30 +0300
commitd8323c6b03533ac870fb665277e6dad7ebf7e4d3 (patch)
treedbcc13c86798dd0c310094179f3cc0658fd53f5d /drivers/pinctrl
parente324957096dbf5bbf1491231c9912c3f5d0bc216 (diff)
downloadlinux-d8323c6b03533ac870fb665277e6dad7ebf7e4d3.tar.xz
pinctrl: sunxi: Add custom irq_domain_ops
The current interrupt parsing code was working by accident, because the default was actually parsing the first node of interrupts. While that was mostly working (and the flags were actually ignored), this binding has never been documented, and doesn't work with SoCs that have multiple interrupt banks anyway. Add a proper interrupt xlate function, that uses the same description than the GPIOs (<bank> <pin> <flags>), that will make things less confusing. The EINT number will still be used as the hwirq number, but won't be exposed through the DT. Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com> Reviewed-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Diffstat (limited to 'drivers/pinctrl')
-rw-r--r--drivers/pinctrl/sunxi/pinctrl-sunxi.c35
1 files changed, 33 insertions, 2 deletions
diff --git a/drivers/pinctrl/sunxi/pinctrl-sunxi.c b/drivers/pinctrl/sunxi/pinctrl-sunxi.c
index 7f7e7bb4f22c..fb4669c0ce0e 100644
--- a/drivers/pinctrl/sunxi/pinctrl-sunxi.c
+++ b/drivers/pinctrl/sunxi/pinctrl-sunxi.c
@@ -711,6 +711,37 @@ static struct irq_chip sunxi_pinctrl_level_irq_chip = {
IRQCHIP_EOI_IF_HANDLED,
};
+static int sunxi_pinctrl_irq_of_xlate(struct irq_domain *d,
+ struct device_node *node,
+ const u32 *intspec,
+ unsigned int intsize,
+ unsigned long *out_hwirq,
+ unsigned int *out_type)
+{
+ struct sunxi_desc_function *desc;
+ int pin, base;
+
+ if (intsize < 3)
+ return -EINVAL;
+
+ base = PINS_PER_BANK * intspec[0];
+ pin = base + intspec[1];
+
+ desc = sunxi_pinctrl_desc_find_function_by_pin(d->host_data,
+ pin, "irq");
+ if (!desc)
+ return -EINVAL;
+
+ *out_hwirq = desc->irqbank * PINS_PER_BANK + desc->irqnum;
+ *out_type = intspec[2];
+
+ return 0;
+}
+
+static struct irq_domain_ops sunxi_pinctrl_irq_domain_ops = {
+ .xlate = sunxi_pinctrl_irq_of_xlate,
+};
+
static void sunxi_pinctrl_irq_handler(unsigned __irq, struct irq_desc *desc)
{
unsigned int irq = irq_desc_get_irq(desc);
@@ -986,8 +1017,8 @@ int sunxi_pinctrl_init(struct platform_device *pdev,
pctl->domain = irq_domain_add_linear(node,
pctl->desc->irq_banks * IRQ_PER_BANK,
- &irq_domain_simple_ops,
- NULL);
+ &sunxi_pinctrl_irq_domain_ops,
+ pctl);
if (!pctl->domain) {
dev_err(&pdev->dev, "Couldn't register IRQ domain\n");
ret = -ENOMEM;