[PATCH RFC 06/11] media: rockchip: rkisp1: allow separate interrupts
Heiko Stuebner
heiko at sntech.de
Fri Jan 8 14:33:06 EST 2021
From: Heiko Stuebner <heiko.stuebner at 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 at 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 038c303a8aed..44f333bf5d6a 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>
@@ -460,9 +461,9 @@ 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 68da1eed753d..96afc1d1a914 100644
--- a/drivers/media/platform/rockchip/rkisp1/rkisp1-dev.c
+++ b/drivers/media/platform/rockchip/rkisp1/rkisp1-dev.c
@@ -389,18 +389,15 @@ 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;
}
@@ -481,15 +478,50 @@ 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;
+ }
}
rkisp1->irq = irq;
diff --git a/drivers/media/platform/rockchip/rkisp1/rkisp1-isp.c b/drivers/media/platform/rockchip/rkisp1/rkisp1-isp.c
index 889982d8ca41..84440aa71210 100644
--- a/drivers/media/platform/rockchip/rkisp1/rkisp1-isp.c
+++ b/drivers/media/platform/rockchip/rkisp1/rkisp1-isp.c
@@ -1056,13 +1056,15 @@ 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);
@@ -1097,6 +1099,8 @@ 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)
@@ -1109,13 +1113,15 @@ 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);
@@ -1157,4 +1163,6 @@ void rkisp1_isp_isr(struct rkisp1_device *rkisp1)
*/
rkisp1_params_isr(rkisp1);
}
+
+ return IRQ_HANDLED;
}
--
2.29.2
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