From 9a0e3cd50d3967b669f0f0ea79a7054c7877d95b Mon Sep 17 00:00:00 2001
From: Dafna Hirschfeld <dafna.hirschfeld@collabora.com>
Date: Tue, 7 Dec 2021 12:59:23 +0100
Subject: [PATCH] media: rkisp1: fix grey format iommu page faults
Currently capturing grey format produces page faults
on both selfpath and mainpath. To support greyscale
we can capture YUV422 planar format and configure the U, V
buffers to the dummy buffer.
Signed-off-by: Dafna Hirschfeld <dafna.hirschfeld@collabora.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
---
.../platform/rockchip/rkisp1/rkisp1-capture.c | 28 ++++++++++++++-----
1 file changed, 21 insertions(+), 7 deletions(-)
diff --git a/drivers/media/platform/rockchip/rkisp1/rkisp1-capture.c b/drivers/media/platform/rockchip/rkisp1/rkisp1-capture.c
index 768987d5f2dd9..fee2aaacb26be 100644
--- a/drivers/media/platform/rockchip/rkisp1/rkisp1-capture.c
+++ b/drivers/media/platform/rockchip/rkisp1/rkisp1-capture.c
@@ -249,7 +249,7 @@ static const struct rkisp1_capture_fmt_cfg rkisp1_sp_fmts[] = {
.fourcc = V4L2_PIX_FMT_GREY,
.uv_swap = 0,
.write_format = RKISP1_MI_CTRL_SP_WRITE_PLA,
- .output_format = RKISP1_MI_CTRL_SP_OUTPUT_YUV400,
+ .output_format = RKISP1_MI_CTRL_SP_OUTPUT_YUV422,
.mbus = MEDIA_BUS_FMT_YUYV8_2X8,
},
/* rgb */
@@ -631,12 +631,26 @@ static void rkisp1_set_next_buf(struct rkisp1_capture *cap)
rkisp1_write(cap->rkisp1,
buff_addr[RKISP1_PLANE_Y],
cap->config->mi.y_base_ad_init);
- rkisp1_write(cap->rkisp1,
- buff_addr[RKISP1_PLANE_CB],
- cap->config->mi.cb_base_ad_init);
- rkisp1_write(cap->rkisp1,
- buff_addr[RKISP1_PLANE_CR],
- cap->config->mi.cr_base_ad_init);
+ /*
+ * In order to support grey format we capture
+ * YUV422 planar format from the camera and
+ * set the U and V planes to the dummy buffer
+ */
+ if (cap->pix.cfg->fourcc == V4L2_PIX_FMT_GREY) {
+ rkisp1_write(cap->rkisp1,
+ cap->buf.dummy.dma_addr,
+ cap->config->mi.cb_base_ad_init);
+ rkisp1_write(cap->rkisp1,
+ cap->buf.dummy.dma_addr,
+ cap->config->mi.cr_base_ad_init);
+ } else {
+ rkisp1_write(cap->rkisp1,
+ buff_addr[RKISP1_PLANE_CB],
+ cap->config->mi.cb_base_ad_init);
+ rkisp1_write(cap->rkisp1,
+ buff_addr[RKISP1_PLANE_CR],
+ cap->config->mi.cr_base_ad_init);
+ }
} else {
/*
* Use the dummy space allocated by dma_alloc_coherent to
--
2.30.2