Add 'qcom/opensource/display-drivers/' from commit '5ff96e683134b356ebe6c37069b4197034502ef9'

git-subtree-dir: qcom/opensource/display-drivers
git-subtree-mainline: 2d61911ef6
git-subtree-split: 5ff96e6831
Change-Id:
repo: https://git.codelinaro.org/clo/la/platform/vendor/opensource/display-drivers
tag: DISPLAY.LA.4.0.r2-07600-lanai.0

qcom/opensource/display-drivers/msm/sde/sde_irq.c

@@ -0,0 +1,135 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (c) 2022 Qualcomm Innovation Center, Inc. All rights reserved.
+ * Copyright (c) 2015-2019, The Linux Foundation. All rights reserved.
+ */
+
+#define pr_fmt(fmt)	"[drm:%s:%d] " fmt, __func__, __LINE__
+
+#include <linux/irqdomain.h>
+#include <linux/irq.h>
+#include <linux/kthread.h>
+
+#include "sde_irq.h"
+#include "sde_core_irq.h"
+
+uint32_t g_sde_irq_status;
+
+void sde_irq_update(struct msm_kms *msm_kms, bool enable)
+{
+	struct sde_kms *sde_kms = to_sde_kms(msm_kms);
+
+	if (!msm_kms || !sde_kms) {
+		SDE_ERROR("invalid kms arguments\n");
+		return;
+	}
+
+	sde_kms->irq_enabled = enable;
+
+	if (enable)
+		enable_irq(sde_kms->irq_num);
+	else
+		disable_irq(sde_kms->irq_num);
+}
+
+irqreturn_t sde_irq(struct msm_kms *kms)
+{
+	struct sde_kms *sde_kms = to_sde_kms(kms);
+	u32 interrupts;
+
+	sde_kms->hw_intr->ops.get_interrupt_sources(sde_kms->hw_intr,
+			&interrupts);
+
+	/* store irq status in case of irq-storm debugging */
+	g_sde_irq_status = interrupts;
+
+	/*
+	 * Taking care of MDP interrupt
+	 */
+	if (interrupts & IRQ_SOURCE_MDP) {
+		interrupts &= ~IRQ_SOURCE_MDP;
+		sde_core_irq(sde_kms);
+	}
+
+	/*
+	 * Routing all other interrupts to external drivers
+	 */
+	while (interrupts) {
+		irq_hw_number_t hwirq = fls(interrupts) - 1;
+		unsigned int mapping;
+		int rc;
+
+		mapping = irq_find_mapping(sde_kms->irq_controller.domain,
+				hwirq);
+		if (mapping == 0) {
+			SDE_EVT32(hwirq, SDE_EVTLOG_ERROR);
+			goto error;
+		}
+
+		rc = generic_handle_irq(mapping);
+		if (rc < 0) {
+			SDE_EVT32(hwirq, mapping, rc, SDE_EVTLOG_ERROR);
+			goto error;
+		}
+
+		interrupts &= ~(1 << hwirq);
+	}
+
+	return IRQ_HANDLED;
+
+error:
+	/* bad situation, inform irq system, it may disable overall MDSS irq */
+	return IRQ_NONE;
+}
+
+void sde_irq_preinstall(struct msm_kms *kms)
+{
+	struct sde_kms *sde_kms = to_sde_kms(kms);
+
+	if (!sde_kms->dev || !sde_kms->dev->dev) {
+		pr_err("invalid device handles\n");
+		return;
+	}
+
+	sde_core_irq_preinstall(sde_kms);
+
+	sde_kms->irq_num = platform_get_irq(
+				to_platform_device(sde_kms->dev->dev),
+				0);
+	if (sde_kms->irq_num < 0) {
+		SDE_ERROR("invalid irq number %d\n", sde_kms->irq_num);
+		return;
+	}
+
+	/* disable irq until power event enables it */
+	if (!sde_kms->irq_enabled)
+		irq_set_status_flags(sde_kms->irq_num, IRQ_NOAUTOEN);
+}
+
+int sde_irq_postinstall(struct msm_kms *kms)
+{
+	struct sde_kms *sde_kms = to_sde_kms(kms);
+	int rc;
+
+	if (!kms) {
+		SDE_ERROR("invalid parameters\n");
+		return -EINVAL;
+	}
+
+	rc = sde_core_irq_postinstall(sde_kms);
+
+	return rc;
+}
+
+void sde_irq_uninstall(struct msm_kms *kms)
+{
+	struct sde_kms *sde_kms = to_sde_kms(kms);
+
+	if (!kms) {
+		SDE_ERROR("invalid parameters\n");
+		return;
+	}
+
+	sde_core_irq_uninstall(sde_kms);
+	sde_core_irq_domain_fini(sde_kms);
+}