drm/nv50: rework PGPIO IRQ handling and hotplug detection
Allows callers to install their own handlers for when a GPIO line
changes state (such as for hotplug detect).
This also fixes a bug where we weren't acknowledging the GPIO IRQ
until after the bottom half had run, causing a severe IRQ storm
in some cases.
Reviewed-by: Francisco Jerez <currojerez@riseup.net>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
diff --git a/drivers/gpu/drm/nouveau/nouveau_state.c b/drivers/gpu/drm/nouveau/nouveau_state.c
index 262545b..b26b34c 100644
--- a/drivers/gpu/drm/nouveau/nouveau_state.c
+++ b/drivers/gpu/drm/nouveau/nouveau_state.c
@@ -396,6 +396,8 @@
engine->gpio.takedown = nv50_gpio_fini;
engine->gpio.get = nv50_gpio_get;
engine->gpio.set = nv50_gpio_set;
+ engine->gpio.irq_register = nv50_gpio_irq_register;
+ engine->gpio.irq_unregister = nv50_gpio_irq_unregister;
engine->gpio.irq_enable = nv50_gpio_irq_enable;
switch (dev_priv->chipset) {
case 0x84:
@@ -487,6 +489,8 @@
engine->gpio.takedown = nouveau_stub_takedown;
engine->gpio.get = nv50_gpio_get;
engine->gpio.set = nv50_gpio_set;
+ engine->gpio.irq_register = nv50_gpio_irq_register;
+ engine->gpio.irq_unregister = nv50_gpio_irq_unregister;
engine->gpio.irq_enable = nv50_gpio_irq_enable;
engine->crypt.init = nouveau_stub_init;
engine->crypt.takedown = nouveau_stub_takedown;