drm/nv50: add function to control GPIO IRQ reporting
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
diff --git a/drivers/gpu/drm/nouveau/nv50_gpio.c b/drivers/gpu/drm/nouveau/nv50_gpio.c
index bb47ad7..88715c5 100644
--- a/drivers/gpu/drm/nouveau/nv50_gpio.c
+++ b/drivers/gpu/drm/nouveau/nv50_gpio.c
@@ -74,3 +74,22 @@
nv_wr32(dev, r, v);
return 0;
}
+
+void
+nv50_gpio_irq_enable(struct drm_device *dev, enum dcb_gpio_tag tag, bool on)
+{
+ struct dcb_gpio_entry *gpio;
+ u32 reg, mask;
+
+ gpio = nouveau_bios_gpio_entry(dev, tag);
+ if (!gpio) {
+ NV_ERROR(dev, "gpio tag 0x%02x not found\n", tag);
+ return;
+ }
+
+ reg = gpio->line < 16 ? 0xe050 : 0xe070;
+ mask = 0x00010001 << (gpio->line & 0xf);
+
+ nv_wr32(dev, reg + 4, mask);
+ nv_mask(dev, reg + 0, mask, on ? mask : 0);
+}