drm/msm/sde: reorganize top level interrupt handling code
Re-organize interrupt handling code to match device hierarchy
such that the top level handler maps to MDSS level, and core
level handler maps to MDP level. They are moved to separate
files corresponding to top and core respectively. This improves
maintainability of the interrupt handling abstraction.
Change-Id: Ib76cfa0f157722d9c1926bf21fc789c2be19b495
Signed-off-by: Alan Kwong <akwong@codeaurora.org>
diff --git a/drivers/gpu/drm/msm/sde/sde_irq.h b/drivers/gpu/drm/msm/sde/sde_irq.h
new file mode 100644
index 0000000..e1090071
--- /dev/null
+++ b/drivers/gpu/drm/msm/sde/sde_irq.h
@@ -0,0 +1,59 @@
+/* Copyright (c) 2015-2016, The Linux Foundation. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 and
+ * only version 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#ifndef __SDE_IRQ_H__
+#define __SDE_IRQ_H__
+
+#include <linux/kernel.h>
+#include <linux/irqdomain.h>
+
+#include "msm_kms.h"
+
+/**
+ * sde_irq_controller - define MDSS level interrupt controller context
+ * @enabled_mask: enable status of MDSS level interrupt
+ * @domain: interrupt domain of this controller
+ */
+struct sde_irq_controller {
+ unsigned long enabled_mask;
+ struct irq_domain *domain;
+};
+
+/**
+ * sde_irq_preinstall - perform pre-installation of MDSS IRQ handler
+ * @kms: pointer to kms context
+ * @return: none
+ */
+void sde_irq_preinstall(struct msm_kms *kms);
+
+/**
+ * sde_irq_postinstall - perform post-installation of MDSS IRQ handler
+ * @kms: pointer to kms context
+ * @return: 0 if success; error code otherwise
+ */
+int sde_irq_postinstall(struct msm_kms *kms);
+
+/**
+ * sde_irq_uninstall - uninstall MDSS IRQ handler
+ * @drm_dev: pointer to kms context
+ * @return: none
+ */
+void sde_irq_uninstall(struct msm_kms *kms);
+
+/**
+ * sde_irq - MDSS level IRQ handler
+ * @kms: pointer to kms context
+ * @return: interrupt handling status
+ */
+irqreturn_t sde_irq(struct msm_kms *kms);
+
+#endif /* __SDE_IRQ_H__ */