disp: msm: adapt IRQ interface change for multiple SIs

Commit 45160ca ("disp: msm: use linux IRQ interfaces instead
of DRM helpers") update the msm layer to use linux IRQ interfaces
as DRM IRQ helpers are removed in 5.15 kernel.
This change uses macros to control the calling of correct irq interfaces
for kernel version 5.10 and version 5.15.

Change-Id: I367021df783c0aa02f729920b673e6f1f7397e65
Signed-off-by: Bruce Hoo <[email protected]>

msm/msm_drv.c

@@ -47,6 +47,9 @@
 #include <drm/drm_auth.h>
 #include <drm/drm_probe_helper.h>
 #include <linux/version.h>
+#if (LINUX_VERSION_CODE < KERNEL_VERSION(5, 15, 0))
+#include <drm/drm_irq.h>
+#endif
 
 #include "msm_drv.h"
 #include "msm_gem.h"
@@ -377,6 +380,7 @@ static int msm_irq_postinstall(struct drm_device *dev)
 	return 0;
 }
 
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(5, 15, 0))
 static int msm_irq_install(struct drm_device *dev, unsigned int irq)
 {
 	int ret;
@@ -407,6 +411,21 @@ static void msm_irq_uninstall(struct drm_device *dev)
 	kms->funcs->irq_uninstall(kms);
 	free_irq(kms->irq, dev);
 }
+#else
+static void msm_irq_uninstall(struct drm_device *dev)
+{
+	struct msm_drm_private *priv = dev->dev_private;
+	struct msm_kms *kms = priv->kms;
+	BUG_ON(!kms);
+	kms->funcs->irq_uninstall(kms);
+}
+
+static const struct vm_operations_struct vm_ops = {
+	.fault = msm_gem_fault,
+	.open = drm_gem_vm_open,
+	.close = drm_gem_vm_close,
+};
+#endif
 
 int msm_get_src_bpc(int chroma_format,
 	int bpc)
@@ -475,7 +494,11 @@ static int msm_drm_uninit(struct device *dev)
 		msm_fbdev_free(ddev);
 #endif
 	drm_atomic_helper_shutdown(ddev);
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(5, 15, 0))
 	msm_irq_uninstall(ddev);
+#else
+	drm_irq_uninstall(ddev);
+#endif
 
 	if (kms && kms->funcs)
 		kms->funcs->destroy(kms);
@@ -924,7 +947,11 @@ static int msm_drm_component_init(struct device *dev)
 
 	if (kms) {
 		pm_runtime_get_sync(dev);
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(5, 15, 0))
 		ret = msm_irq_install(ddev, platform_get_irq(pdev, 0));
+#else
+		ret = drm_irq_install(ddev, platform_get_irq(pdev, 0));
+#endif
 		pm_runtime_put_sync(dev);
 		if (ret < 0) {
 			dev_err(dev, "failed to install IRQ handler\n");
@@ -1716,14 +1743,6 @@ static const struct drm_ioctl_desc msm_ioctls[] = {
 			DRM_UNLOCKED),
 };
 
-#if (LINUX_VERSION_CODE < KERNEL_VERSION(5, 15, 0))
-static const struct vm_operations_struct vm_ops = {
-	.fault = msm_gem_fault,
-	.open = drm_gem_vm_open,
-	.close = drm_gem_vm_close,
-};
-#endif
-
 static const struct file_operations fops = {
 	.owner              = THIS_MODULE,
 	.open               = drm_open,
@@ -1745,6 +1764,10 @@ static struct drm_driver msm_driver = {
 	.postclose          = msm_postclose,
 	.lastclose          = msm_lastclose,
 #if (LINUX_VERSION_CODE < KERNEL_VERSION(5, 15, 0))
+	.irq_handler        = msm_irq,
+	.irq_preinstall     = msm_irq_preinstall,
+	.irq_postinstall    = msm_irq_postinstall,
+	.irq_uninstall      = msm_irq_uninstall,
 	.gem_free_object_unlocked    = msm_gem_free_object,
 	.gem_vm_ops         = &vm_ops,
 	.gem_prime_export   = drm_gem_prime_export,