summaryrefslogtreecommitdiffstats
path: root/drivers/gpu/drm/nouveau/nv50_gpio.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/gpu/drm/nouveau/nv50_gpio.c')
-rw-r--r--drivers/gpu/drm/nouveau/nv50_gpio.c35
1 files changed, 35 insertions, 0 deletions
diff --git a/drivers/gpu/drm/nouveau/nv50_gpio.c b/drivers/gpu/drm/nouveau/nv50_gpio.c
index bb47ad73726..b2fab2bf3d6 100644
--- a/drivers/gpu/drm/nouveau/nv50_gpio.c
+++ b/drivers/gpu/drm/nouveau/nv50_gpio.c
@@ -74,3 +74,38 @@ nv50_gpio_set(struct drm_device *dev, enum dcb_gpio_tag tag, int state)
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);
+}
+
+int
+nv50_gpio_init(struct drm_device *dev)
+{
+ struct drm_nouveau_private *dev_priv = dev->dev_private;
+
+ /* disable, and ack any pending gpio interrupts */
+ nv_wr32(dev, 0xe050, 0x00000000);
+ nv_wr32(dev, 0xe054, 0xffffffff);
+ if (dev_priv->chipset >= 0x90) {
+ nv_wr32(dev, 0xe070, 0x00000000);
+ nv_wr32(dev, 0xe074, 0xffffffff);
+ }
+
+ return 0;
+}