Komeda interrupts may be shared with other hardware blocks.
One needs to use devm_request_irq() with IRQF_SHARED to create a shared
interrupt handler.
As a result of not using drm_irq_install() api, one needs to set
"(struct drm_device *)->irq_enabled = true/false" to enable/disable
vblank interrupts.
Changes from v1:-
1. Squashed the following two patches into one (as the second patch is a
consequence of the first one):-
drm/komeda: Avoid using DRIVER_IRQ_SHARED
drm/komeda: Enable/Disable vblank interrupts
2. Fixed the commit message (as pointed by Daniel Vetter)
3. Removed calls to 'drm_irq_uninstall()' as we are no longer using
drm_irq_install()
4. Removed the struct member 'komeda_kms_driver.irq_handler' as it is not
used anywhere.
Signed-off-by: Ayan Kumar halder <ayan.hal...@arm.com>
---
drivers/gpu/drm/arm/display/komeda/komeda_kms.c | 16 +++++++++-------
1 file changed, 9 insertions(+), 7 deletions(-)
diff --git a/drivers/gpu/drm/arm/display/komeda/komeda_kms.c
b/drivers/gpu/drm/arm/display/komeda/komeda_kms.c
index 86f6542afb40..bb2bffc0e022 100644
--- a/drivers/gpu/drm/arm/display/komeda/komeda_kms.c
+++ b/drivers/gpu/drm/arm/display/komeda/komeda_kms.c
@@ -58,7 +58,6 @@ static struct drm_driver komeda_kms_driver = {
.driver_features = DRIVER_GEM | DRIVER_MODESET | DRIVER_ATOMIC |
DRIVER_PRIME | DRIVER_HAVE_IRQ,
.lastclose = drm_fb_helper_lastclose,
- .irq_handler = komeda_kms_irq_handler,
.gem_free_object_unlocked = drm_gem_cma_free_object,
.gem_vm_ops = &drm_gem_cma_vm_ops,
.dumb_create = komeda_gem_cma_dumb_create,
@@ -194,23 +193,26 @@ struct komeda_kms_dev *komeda_kms_attach(struct
komeda_dev *mdev)
drm_mode_config_reset(drm);
- err = drm_irq_install(drm, mdev->irq);
+ err = devm_request_irq(drm->dev, mdev->irq,
+ komeda_kms_irq_handler, IRQF_SHARED,
+ drm->driver->name, drm);
if (err)
goto cleanup_mode_config;
err = mdev->funcs->enable_irq(mdev);
if (err)
- goto uninstall_irq;
+ goto cleanup_mode_config;
+
+ drm->irq_enabled = true;
err = drm_dev_register(drm, 0);
if (err)
- goto uninstall_irq;
+ goto cleanup_mode_config;
return kms;
-uninstall_irq:
- drm_irq_uninstall(drm);
cleanup_mode_config:
+ drm->irq_enabled = false;
drm_mode_config_cleanup(drm);
komeda_kms_cleanup_private_objs(kms);
free_kms:
@@ -223,9 +225,9 @@ void komeda_kms_detach(struct komeda_kms_dev *kms)
struct drm_device *drm = &kms->base;
struct komeda_dev *mdev = drm->dev_private;
+ drm->irq_enabled = false;
mdev->funcs->disable_irq(mdev);
drm_dev_unregister(drm);
- drm_irq_uninstall(drm);
component_unbind_all(mdev->dev, drm);
komeda_kms_cleanup_private_objs(kms);
drm_mode_config_cleanup(drm);
--
2.21.0
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