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Message-ID: <20250226152418.1132337-15-tommaso.merciai.xr@bp.renesas.com>
Date: Wed, 26 Feb 2025 16:23:38 +0100
From: Tommaso Merciai <tommaso.merciai.xr@...renesas.com>
To: tomm.merciai@...il.com
Cc: linux-renesas-soc@...r.kernel.org,
linux-media@...r.kernel.org,
biju.das.jz@...renesas.com,
prabhakar.mahadev-lad.rj@...renesas.com,
Laurent Pinchart <laurent.pinchart+renesas@...asonboard.com>,
Tommaso Merciai <tommaso.merciai.xr@...renesas.com>,
Mauro Carvalho Chehab <mchehab@...nel.org>,
Rob Herring <robh@...nel.org>,
Krzysztof Kozlowski <krzk+dt@...nel.org>,
Conor Dooley <conor+dt@...nel.org>,
Geert Uytterhoeven <geert+renesas@...der.be>,
Magnus Damm <magnus.damm@...il.com>,
Hans Verkuil <hverkuil@...all.nl>,
Uwe Kleine-König <u.kleine-koenig@...libre.com>,
devicetree@...r.kernel.org,
linux-kernel@...r.kernel.org
Subject: [PATCH v3 14/17] media: rzg2l-cru: Add IRQ handler to OF data
From: Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>
Add `irq_handler` to the `rzg2l_cru_info` structure and pass it as part of
the OF data. This prepares for supporting RZ/G3E and RZ/V2H(P) SoCs, which
require a different IRQ handler. Update the IRQ request code to use the
handler from the OF data.
Add `enable_interrupts` and `disable_interrupts` function pointers to the
`rzg2l_cru_info` structure and pass them as part of the OF data. This
prepares for supporting RZ/G3E and RZ/V2H(P) SoCs, which require different
interrupt configurations.
Implement `rzg2l_cru_enable_interrupts()` and
`rzg2l_cru_disable_interrupts()` functions and update the code to use them
instead of directly writing to interrupt registers.
Reviewed-by: Laurent Pinchart <laurent.pinchart+renesas@...asonboard.com>
Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>
Signed-off-by: Tommaso Merciai <tommaso.merciai.xr@...renesas.com>
---
Changes since v2:
- Squashed patch 15 and 14
- Collected tag
.../platform/renesas/rzg2l-cru/rzg2l-core.c | 5 ++++-
.../platform/renesas/rzg2l-cru/rzg2l-cru.h | 8 ++++++++
.../platform/renesas/rzg2l-cru/rzg2l-video.c | 19 ++++++++++++++-----
3 files changed, 26 insertions(+), 6 deletions(-)
diff --git a/drivers/media/platform/renesas/rzg2l-cru/rzg2l-core.c b/drivers/media/platform/renesas/rzg2l-cru/rzg2l-core.c
index 7e94ae803967..302f792cb415 100644
--- a/drivers/media/platform/renesas/rzg2l-cru/rzg2l-core.c
+++ b/drivers/media/platform/renesas/rzg2l-cru/rzg2l-core.c
@@ -278,7 +278,7 @@ static int rzg2l_cru_probe(struct platform_device *pdev)
if (irq < 0)
return irq;
- ret = devm_request_irq(dev, irq, rzg2l_cru_irq, 0,
+ ret = devm_request_irq(dev, irq, cru->info->irq_handler, 0,
KBUILD_MODNAME, cru);
if (ret)
return dev_err_probe(dev, ret, "failed to request irq\n");
@@ -359,6 +359,9 @@ static const struct rzg2l_cru_info rzgl2_cru_info = {
.max_height = 4095,
.image_conv = ICnMC,
.regs = rzg2l_cru_regs,
+ .irq_handler = rzg2l_cru_irq,
+ .enable_interrupts = rzg2l_cru_enable_interrupts,
+ .disable_interrupts = rzg2l_cru_disable_interrupts,
};
static const struct of_device_id rzg2l_cru_of_id_table[] = {
diff --git a/drivers/media/platform/renesas/rzg2l-cru/rzg2l-cru.h b/drivers/media/platform/renesas/rzg2l-cru/rzg2l-cru.h
index ca156772b949..3f694044d8cd 100644
--- a/drivers/media/platform/renesas/rzg2l-cru/rzg2l-cru.h
+++ b/drivers/media/platform/renesas/rzg2l-cru/rzg2l-cru.h
@@ -34,6 +34,8 @@ enum rzg2l_csi2_pads {
RZG2L_CRU_IP_SOURCE,
};
+struct rzg2l_cru_dev;
+
/**
* enum rzg2l_cru_dma_state - DMA states
* @RZG2L_CRU_DMA_STOPPED: No operation in progress
@@ -83,6 +85,9 @@ struct rzg2l_cru_info {
unsigned int max_height;
u16 image_conv;
const u16 *regs;
+ irqreturn_t (*irq_handler)(int irq, void *data);
+ void (*enable_interrupts)(struct rzg2l_cru_dev *cru);
+ void (*disable_interrupts)(struct rzg2l_cru_dev *cru);
};
/**
@@ -177,4 +182,7 @@ const struct rzg2l_cru_ip_format *rzg2l_cru_ip_code_to_fmt(unsigned int code);
const struct rzg2l_cru_ip_format *rzg2l_cru_ip_format_to_fmt(u32 format);
const struct rzg2l_cru_ip_format *rzg2l_cru_ip_index_to_fmt(u32 index);
+void rzg2l_cru_enable_interrupts(struct rzg2l_cru_dev *cru);
+void rzg2l_cru_disable_interrupts(struct rzg2l_cru_dev *cru);
+
#endif
diff --git a/drivers/media/platform/renesas/rzg2l-cru/rzg2l-video.c b/drivers/media/platform/renesas/rzg2l-cru/rzg2l-video.c
index 5033c8d98639..8995aa254c17 100644
--- a/drivers/media/platform/renesas/rzg2l-cru/rzg2l-video.c
+++ b/drivers/media/platform/renesas/rzg2l-cru/rzg2l-video.c
@@ -300,8 +300,7 @@ void rzg2l_cru_stop_image_processing(struct rzg2l_cru_dev *cru)
spin_lock_irqsave(&cru->qlock, flags);
/* Disable and clear the interrupt */
- rzg2l_cru_write(cru, CRUnIE, 0);
- rzg2l_cru_write(cru, CRUnINTS, 0x001F0F0F);
+ cru->info->disable_interrupts(cru);
/* Stop the operation of image conversion */
rzg2l_cru_write(cru, ICnEN, 0);
@@ -393,6 +392,17 @@ static int rzg2l_cru_get_virtual_channel(struct rzg2l_cru_dev *cru)
return fd.entry[0].bus.csi2.vc;
}
+void rzg2l_cru_enable_interrupts(struct rzg2l_cru_dev *cru)
+{
+ rzg2l_cru_write(cru, CRUnIE, CRUnIE_EFE);
+}
+
+void rzg2l_cru_disable_interrupts(struct rzg2l_cru_dev *cru)
+{
+ rzg2l_cru_write(cru, CRUnIE, 0);
+ rzg2l_cru_write(cru, CRUnINTS, 0x001f000f);
+}
+
int rzg2l_cru_start_image_processing(struct rzg2l_cru_dev *cru)
{
struct v4l2_mbus_framefmt *fmt = rzg2l_cru_ip_get_src_fmt(cru);
@@ -414,8 +424,7 @@ int rzg2l_cru_start_image_processing(struct rzg2l_cru_dev *cru)
rzg2l_cru_write(cru, CRUnRST, CRUnRST_VRESETN);
/* Disable and clear the interrupt before using */
- rzg2l_cru_write(cru, CRUnIE, 0);
- rzg2l_cru_write(cru, CRUnINTS, 0x001f000f);
+ cru->info->disable_interrupts(cru);
/* Initialize the AXI master */
rzg2l_cru_initialize_axi(cru);
@@ -428,7 +437,7 @@ int rzg2l_cru_start_image_processing(struct rzg2l_cru_dev *cru)
}
/* Enable interrupt */
- rzg2l_cru_write(cru, CRUnIE, CRUnIE_EFE);
+ cru->info->enable_interrupts(cru);
/* Enable image processing reception */
rzg2l_cru_write(cru, ICnEN, ICnEN_ICEN);
--
2.43.0
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