From d883f2e7f47a39873c957175c9e1cc7df093447f Mon Sep 17 00:00:00 2001 From: =?utf8?q?Niklas=20S=C3=B6derlund?= Date: Mon, 16 Jun 2025 20:57:22 +0200 Subject: [PATCH] media: rcar-vin: Generate FRAME_SYNC events MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit Enable the VSYNC Rising Edge Detection interrupt and generate a FRAME_SYNC event form it. The interrupt is available on all supported models of the VIN (Gen2, Gen3 and Gen4). Signed-off-by: Niklas Söderlund Reviewed-by: Laurent Pinchart Link: https://lore.kernel.org/r/20250616185722.980722-4-niklas.soderlund+renesas@ragnatech.se Signed-off-by: Laurent Pinchart Signed-off-by: Hans Verkuil --- .../media/platform/renesas/rcar-vin/rcar-dma.c | 17 +++++++++++++++++ .../media/platform/renesas/rcar-vin/rcar-v4l2.c | 2 ++ 2 files changed, 19 insertions(+) diff --git a/drivers/media/platform/renesas/rcar-vin/rcar-dma.c b/drivers/media/platform/renesas/rcar-vin/rcar-dma.c index 19ff190f0fb20..b619d1436a415 100644 --- a/drivers/media/platform/renesas/rcar-vin/rcar-dma.c +++ b/drivers/media/platform/renesas/rcar-vin/rcar-dma.c @@ -13,6 +13,7 @@ #include #include +#include #include #include "rcar-vin.h" @@ -114,10 +115,14 @@ #define VNFC_S_FRAME (1 << 0) /* Video n Interrupt Enable Register bits */ +#define VNIE_VFE BIT(17) +#define VNIE_VRE BIT(16) #define VNIE_FIE BIT(4) #define VNIE_EFE BIT(1) /* Video n Interrupt Status Register bits */ +#define VNINTS_VFS BIT(17) +#define VNINTS_VRS BIT(16) #define VNINTS_FIS BIT(4) #define VNINTS_EFS BIT(1) @@ -889,6 +894,8 @@ static int rvin_setup(struct rvin_dev *vin) /* Progressive or interlaced mode */ interrupts = progressive ? VNIE_FIE : VNIE_EFE; + /* Enable VSYNC Rising Edge Detection. */ + interrupts |= VNIE_VRE; /* Ack interrupts */ rvin_write(vin, interrupts, VNINTS_REG); @@ -1040,6 +1047,16 @@ static irqreturn_t rvin_irq(int irq, void *data) rvin_write(vin, status, VNINTS_REG); handled = 1; + /* Signal Start of Frame. */ + if (status & VNINTS_VRS) { + struct v4l2_event event = { + .type = V4L2_EVENT_FRAME_SYNC, + .u.frame_sync.frame_sequence = vin->sequence, + }; + + v4l2_event_queue(&vin->vdev, &event); + } + /* Nothing to do if nothing was captured. */ capture = vin->format.field == V4L2_FIELD_NONE || vin->format.field == V4L2_FIELD_ALTERNATE ? diff --git a/drivers/media/platform/renesas/rcar-vin/rcar-v4l2.c b/drivers/media/platform/renesas/rcar-vin/rcar-v4l2.c index 9b1e3a9d3249b..62eddf3a35fc9 100644 --- a/drivers/media/platform/renesas/rcar-vin/rcar-v4l2.c +++ b/drivers/media/platform/renesas/rcar-vin/rcar-v4l2.c @@ -489,6 +489,8 @@ static int rvin_subscribe_event(struct v4l2_fh *fh, const struct v4l2_event_subscription *sub) { switch (sub->type) { + case V4L2_EVENT_FRAME_SYNC: + return v4l2_event_subscribe(fh, sub, 2, NULL); case V4L2_EVENT_SOURCE_CHANGE: return v4l2_event_subscribe(fh, sub, 4, NULL); } -- 2.47.2