linux-kernel - [PATCH v1 08/15] remoteproc: mediatek: Add SCP core 1 interrupt support

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Message-ID: <20220601112201.15510-9-tinghan.shen@mediatek.com>
Date:   Wed, 1 Jun 2022 19:21:54 +0800
From:   Tinghan Shen <tinghan.shen@...iatek.com>
To:     Bjorn Andersson <bjorn.andersson@...aro.org>,
        Mathieu Poirier <mathieu.poirier@...aro.org>,
        Rob Herring <robh+dt@...nel.org>,
        "Krzysztof Kozlowski" <krzysztof.kozlowski+dt@...aro.org>,
        Matthias Brugger <matthias.bgg@...il.com>,
        Lee Jones <lee.jones@...aro.org>,
        Benson Leung <bleung@...omium.org>,
        Guenter Roeck <groeck@...omium.org>,
        Daisuke Nojiri <dnojiri@...omium.org>,
        Sebastian Reichel <sebastian.reichel@...labora.com>,
        "Dustin L. Howett" <dustin@...ett.net>,
        Tzung-Bi Shih <tzungbi@...nel.org>,
        Tinghan Shen <tinghan.shen@...iatek.com>,
        "Gustavo A. R. Silva" <gustavoars@...nel.org>,
        Prashant Malani <pmalani@...omium.org>,
        "Enric Balletbo i Serra" <enric.balletbo@...labora.com>,
        Brian Norris <briannorris@...omium.org>
CC:     <linux-remoteproc@...r.kernel.org>, <devicetree@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-mediatek@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>, <chrome-platform@...ts.linux.dev>,
        <Project_Global_Chrome_Upstream_Group@...iatek.com>,
        <weishunc@...gle.com>
Subject: [PATCH v1 08/15] remoteproc: mediatek: Add SCP core 1 interrupt support

Reuse the interrupt handling API of SCP core 0 on SCP core 1.

Signed-off-by: Tinghan Shen <tinghan.shen@...iatek.com>
---
 drivers/remoteproc/mtk_common.h   |  1 +
 drivers/remoteproc/mtk_scp.c      |  3 ++-
 drivers/remoteproc/mtk_scp_dual.c | 17 +++++++++++++++++
 3 files changed, 20 insertions(+), 1 deletion(-)

diff --git a/drivers/remoteproc/mtk_common.h b/drivers/remoteproc/mtk_common.h
index da3ea2243678..04f7ee590f96 100644
--- a/drivers/remoteproc/mtk_common.h
+++ b/drivers/remoteproc/mtk_common.h
@@ -170,4 +170,5 @@ void *scp_da_to_va(struct rproc *rproc, u64 da, size_t len, bool *is_iomem);
 int scp_parse_fw(struct rproc *rproc, const struct firmware *fw);
 int scp_map_memory_region(struct mtk_scp *scp);
 void scp_unmap_memory_region(struct mtk_scp *scp);
+irqreturn_t scp_irq_handler(int irq, void *priv);
 #endif
diff --git a/drivers/remoteproc/mtk_scp.c b/drivers/remoteproc/mtk_scp.c
index 75d161da0f59..c67883c28a43 100644
--- a/drivers/remoteproc/mtk_scp.c
+++ b/drivers/remoteproc/mtk_scp.c
@@ -237,7 +237,7 @@ static void mt8195_scp_irq_handler(struct mtk_scp *scp)
 	}
 }
 
-static irqreturn_t scp_irq_handler(int irq, void *priv)
+irqreturn_t scp_irq_handler(int irq, void *priv)
 {
 	struct mtk_scp *scp = priv;
 	int ret;
@@ -254,6 +254,7 @@ static irqreturn_t scp_irq_handler(int irq, void *priv)
 
 	return IRQ_HANDLED;
 }
+EXPORT_SYMBOL_GPL(scp_irq_handler);
 
 static int scp_elf_load_segments(struct rproc *rproc, const struct firmware *fw)
 {
diff --git a/drivers/remoteproc/mtk_scp_dual.c b/drivers/remoteproc/mtk_scp_dual.c
index 0f932d26f864..7bed39722bd5 100644
--- a/drivers/remoteproc/mtk_scp_dual.c
+++ b/drivers/remoteproc/mtk_scp_dual.c
@@ -71,7 +71,24 @@ static int scp_dual_probe(struct platform_device *pdev)
 	init_waitqueue_head(&scp->run.wq);
 	init_waitqueue_head(&scp->ack_wq);
 
+	ret = devm_request_threaded_irq(dev, platform_get_irq(pdev, 0), NULL,
+					scp_irq_handler, IRQF_ONESHOT,
+					pdev->name, scp);
+
+	if (ret) {
+		dev_err(dev, "failed to request irq\n");
+		goto release_dev_mem;
+	}
+
 	return 0;
+
+release_dev_mem:
+	scp_unmap_memory_region(scp);
+	for (i = 0; i < SCP_IPI_MAX; i++)
+		mutex_destroy(&scp->ipi_desc[i].lock);
+	mutex_destroy(&scp->send_lock);
+
+	return ret;
 }
 
 static int scp_dual_remove(struct platform_device *pdev)
-- 
2.18.0