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From: Heiko Stuebner <heiko@sntech.de>
To: mchehab@kernel.org, hverkuil-cisco@xs4all.nl
Cc: ezequiel@collabora.com, dafna.hirschfeld@collabora.com,
	helen.koike@collabora.com, Laurent.pinchart@ideasonboard.com,
	linux-rockchip@lists.infradead.org, linux-media@vger.kernel.org,
	heiko@sntech.de,
	Heiko Stuebner <heiko.stuebner@theobroma-systems.com>
Subject: [PATCH v2 2/7] media: rockchip: rkisp1: allow separate interrupts
Date: Tue, 15 Jun 2021 02:37:36 +0200	[thread overview]
Message-ID: <20210615003741.3758316-3-heiko@sntech.de> (raw)
In-Reply-To: <20210615003741.3758316-1-heiko@sntech.de>

From: Heiko Stuebner <heiko.stuebner@theobroma-systems.com>

Depending on the per-soc implementation there can be one interrupt
for isp, mipi and capture events or separate per-event interrupts.

So simply check for the presence of a named "mi" interrupt
to differentiate between the two cases.

Signed-off-by: Heiko Stuebner <heiko.stuebner@theobroma-systems.com>
---
 .../platform/rockchip/rkisp1/rkisp1-capture.c |  9 ++-
 .../platform/rockchip/rkisp1/rkisp1-common.h  |  7 ++-
 .../platform/rockchip/rkisp1/rkisp1-dev.c     | 58 ++++++++++++++-----
 .../platform/rockchip/rkisp1/rkisp1-isp.c     | 16 +++--
 4 files changed, 69 insertions(+), 21 deletions(-)

diff --git a/drivers/media/platform/rockchip/rkisp1/rkisp1-capture.c b/drivers/media/platform/rockchip/rkisp1/rkisp1-capture.c
index 5f6c9d1623e4..f70c66c2a1d7 100644
--- a/drivers/media/platform/rockchip/rkisp1/rkisp1-capture.c
+++ b/drivers/media/platform/rockchip/rkisp1/rkisp1-capture.c
@@ -685,12 +685,17 @@ static void rkisp1_handle_buffer(struct rkisp1_capture *cap)
 	spin_unlock(&cap->buf.lock);
 }
 
-void rkisp1_capture_isr(struct rkisp1_device *rkisp1)
+irqreturn_t rkisp1_capture_isr(int irq, void *ctx)
 {
+	struct device *dev = ctx;
+	struct rkisp1_device *rkisp1 = dev_get_drvdata(dev);
 	unsigned int i;
 	u32 status;
 
 	status = rkisp1_read(rkisp1, RKISP1_CIF_MI_MIS);
+	if (!status)
+		return IRQ_NONE;
+
 	rkisp1_write(rkisp1, status, RKISP1_CIF_MI_ICR);
 
 	for (i = 0; i < ARRAY_SIZE(rkisp1->capture_devs); ++i) {
@@ -718,6 +723,8 @@ void rkisp1_capture_isr(struct rkisp1_device *rkisp1)
 		cap->is_streaming = false;
 		wake_up(&cap->done);
 	}
+
+	return IRQ_HANDLED;
 }
 
 /* ----------------------------------------------------------------------------
diff --git a/drivers/media/platform/rockchip/rkisp1/rkisp1-common.h b/drivers/media/platform/rockchip/rkisp1/rkisp1-common.h
index be8a350c7527..25dd5c93620e 100644
--- a/drivers/media/platform/rockchip/rkisp1/rkisp1-common.h
+++ b/drivers/media/platform/rockchip/rkisp1/rkisp1-common.h
@@ -12,6 +12,7 @@
 #define _RKISP1_COMMON_H
 
 #include <linux/clk.h>
+#include <linux/interrupt.h>
 #include <linux/mutex.h>
 #include <linux/rkisp1-config.h>
 #include <media/media-device.h>
@@ -459,9 +460,9 @@ void rkisp1_params_configure(struct rkisp1_params *params,
 void rkisp1_params_disable(struct rkisp1_params *params);
 
 /* irq handlers */
-void rkisp1_isp_isr(struct rkisp1_device *rkisp1);
-void rkisp1_mipi_isr(struct rkisp1_device *rkisp1);
-void rkisp1_capture_isr(struct rkisp1_device *rkisp1);
+irqreturn_t rkisp1_isp_isr(int irq, void *ctx);
+irqreturn_t rkisp1_mipi_isr(int irq, void *ctx);
+irqreturn_t rkisp1_capture_isr(int irq, void *ctx);
 void rkisp1_stats_isr(struct rkisp1_stats *stats, u32 isp_ris);
 void rkisp1_params_isr(struct rkisp1_device *rkisp1);
 
diff --git a/drivers/media/platform/rockchip/rkisp1/rkisp1-dev.c b/drivers/media/platform/rockchip/rkisp1/rkisp1-dev.c
index 7afa4c123834..ddc05189c62a 100644
--- a/drivers/media/platform/rockchip/rkisp1/rkisp1-dev.c
+++ b/drivers/media/platform/rockchip/rkisp1/rkisp1-dev.c
@@ -385,18 +385,15 @@ static int rkisp1_entities_register(struct rkisp1_device *rkisp1)
 
 static irqreturn_t rkisp1_isr(int irq, void *ctx)
 {
-	struct device *dev = ctx;
-	struct rkisp1_device *rkisp1 = dev_get_drvdata(dev);
-
 	/*
 	 * Call rkisp1_capture_isr() first to handle the frame that
 	 * potentially completed using the current frame_sequence number before
 	 * it is potentially incremented by rkisp1_isp_isr() in the vertical
 	 * sync.
 	 */
-	rkisp1_capture_isr(rkisp1);
-	rkisp1_isp_isr(rkisp1);
-	rkisp1_mipi_isr(rkisp1);
+	rkisp1_capture_isr(irq, ctx);
+	rkisp1_isp_isr(irq, ctx);
+	rkisp1_mipi_isr(irq, ctx);
 
 	return IRQ_HANDLED;
 }
@@ -478,15 +475,50 @@ static int rkisp1_probe(struct platform_device *pdev)
 	if (IS_ERR(rkisp1->base_addr))
 		return PTR_ERR(rkisp1->base_addr);
 
-	irq = platform_get_irq(pdev, 0);
-	if (irq < 0)
+	irq = platform_get_irq_byname_optional(pdev, "mi");
+	if (irq == -EPROBE_DEFER) {
 		return irq;
+	} else if (irq < 0) {
+		irq = platform_get_irq(pdev, 0);
+		if (irq < 0)
+			return irq;
+
+		ret = devm_request_irq(dev, irq, rkisp1_isr, IRQF_SHARED,
+				       dev_driver_string(dev), dev);
+		if (ret) {
+			dev_err(dev, "request irq failed: %d\n", ret);
+			return ret;
+		}
+	} else {
+		/* we test-got the MI (capture) interrupt */
+		ret = devm_request_irq(dev, irq, rkisp1_capture_isr, IRQF_SHARED,
+				       dev_driver_string(dev), dev);
+		if (ret) {
+			dev_err(dev, "request mi irq failed: %d\n", ret);
+			return ret;
+		}
 
-	ret = devm_request_irq(dev, irq, rkisp1_isr, IRQF_SHARED,
-			       dev_driver_string(dev), dev);
-	if (ret) {
-		dev_err(dev, "request irq failed: %d\n", ret);
-		return ret;
+		irq = platform_get_irq_byname_optional(pdev, "mipi");
+		if (irq < 0)
+			return irq;
+
+		ret = devm_request_irq(dev, irq, rkisp1_mipi_isr, IRQF_SHARED,
+				       dev_driver_string(dev), dev);
+		if (ret) {
+			dev_err(dev, "request mipi irq failed: %d\n", ret);
+			return ret;
+		}
+
+		irq = platform_get_irq_byname_optional(pdev, "isp");
+		if (irq < 0)
+			return irq;
+
+		ret = devm_request_irq(dev, irq, rkisp1_isp_isr, IRQF_SHARED,
+				       dev_driver_string(dev), dev);
+		if (ret) {
+			dev_err(dev, "request isp irq failed: %d\n", ret);
+			return ret;
+		}
 	}
 
 	for (i = 0; i < match_data->size; i++)
diff --git a/drivers/media/platform/rockchip/rkisp1/rkisp1-isp.c b/drivers/media/platform/rockchip/rkisp1/rkisp1-isp.c
index 2e5b57e3aedc..1de98e688008 100644
--- a/drivers/media/platform/rockchip/rkisp1/rkisp1-isp.c
+++ b/drivers/media/platform/rockchip/rkisp1/rkisp1-isp.c
@@ -1090,13 +1090,15 @@ void rkisp1_isp_unregister(struct rkisp1_device *rkisp1)
  * Interrupt handlers
  */
 
-void rkisp1_mipi_isr(struct rkisp1_device *rkisp1)
+irqreturn_t rkisp1_mipi_isr(int irq, void *ctx)
 {
+	struct device *dev = ctx;
+	struct rkisp1_device *rkisp1 = dev_get_drvdata(dev);
 	u32 val, status;
 
 	status = rkisp1_read(rkisp1, RKISP1_CIF_MIPI_MIS);
 	if (!status)
-		return;
+		return IRQ_NONE;
 
 	rkisp1_write(rkisp1, status, RKISP1_CIF_MIPI_ICR);
 
@@ -1131,6 +1133,8 @@ void rkisp1_mipi_isr(struct rkisp1_device *rkisp1)
 	} else {
 		rkisp1->debug.mipi_error++;
 	}
+
+	return IRQ_HANDLED;
 }
 
 static void rkisp1_isp_queue_event_sof(struct rkisp1_isp *isp)
@@ -1143,13 +1147,15 @@ static void rkisp1_isp_queue_event_sof(struct rkisp1_isp *isp)
 	v4l2_event_queue(isp->sd.devnode, &event);
 }
 
-void rkisp1_isp_isr(struct rkisp1_device *rkisp1)
+irqreturn_t rkisp1_isp_isr(int irq, void *ctx)
 {
+	struct device *dev = ctx;
+	struct rkisp1_device *rkisp1 = dev_get_drvdata(dev);
 	u32 status, isp_err;
 
 	status = rkisp1_read(rkisp1, RKISP1_CIF_ISP_MIS);
 	if (!status)
-		return;
+		return IRQ_NONE;
 
 	rkisp1_write(rkisp1, status, RKISP1_CIF_ISP_ICR);
 
@@ -1191,4 +1197,6 @@ void rkisp1_isp_isr(struct rkisp1_device *rkisp1)
 		 */
 		rkisp1_params_isr(rkisp1);
 	}
+
+	return IRQ_HANDLED;
 }
-- 
2.29.2


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  parent reply	other threads:[~2021-06-15  0:38 UTC|newest]

Thread overview: 18+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-06-15  0:37 [PATCH v2 0/7] rkisp1 support for px30 Heiko Stuebner
2021-06-15  0:37 ` [PATCH v2 1/7] media: rockchip: rkisp1: remove unused irq variable Heiko Stuebner
2021-06-15  5:44   ` Dafna Hirschfeld
2021-06-15  0:37 ` Heiko Stuebner [this message]
2021-06-15  5:42   ` [PATCH v2 2/7] media: rockchip: rkisp1: allow separate interrupts Dafna Hirschfeld
2021-06-15  0:37 ` [PATCH v2 3/7] media: rockchip: rkisp1: make some isp-param functions variable Heiko Stuebner
2021-06-15  5:53   ` Dafna Hirschfeld
2021-06-15 22:44     ` Heiko Stübner
2021-06-16 18:17   ` kernel test robot
2021-06-15  0:37 ` [PATCH v2 4/7] media: rockchip: rkisp1: make some isp-stats " Heiko Stuebner
2021-06-15  0:37 ` [PATCH v2 5/7] media: rockchip: rkisp1: add prefixes for v10 specific parts Heiko Stuebner
2021-06-15  6:06   ` Dafna Hirschfeld
2021-06-16 19:36   ` kernel test robot
2021-06-15  0:37 ` [PATCH v2 6/7] media: rockchip: rkisp1: add support for v12 isp variants Heiko Stuebner
2021-06-15  6:33   ` Dafna Hirschfeld
2021-06-15 22:31     ` Heiko Stübner
2021-06-15  0:37 ` [PATCH v2 7/7] media: rockchip: rkisp1: add support for px30 isp version Heiko Stuebner
2021-06-15  6:31   ` Dafna Hirschfeld

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