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Message-Id: <20221118093931.1284465-10-paul.elder@ideasonboard.com>
Date: Fri, 18 Nov 2022 18:39:26 +0900
From: Paul Elder <paul.elder@...asonboard.com>
To: linux-media@...r.kernel.org
Cc: Paul Elder <paul.elder@...asonboard.com>,
Dafna Hirschfeld <dafna@...tmail.com>,
Mauro Carvalho Chehab <mchehab@...nel.org>,
Rob Herring <robh+dt@...nel.org>,
Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
Heiko Stuebner <heiko@...ech.de>,
Helen Koike <helen.koike@...labora.com>,
Laurent Pinchart <laurent.pinchart@...asonboard.com>,
linux-rockchip@...ts.infradead.org, devicetree@...r.kernel.org,
linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: [PATCH v3 09/14] media: rkisp1: Shift DMA buffer addresses on i.MX8MP
On the ISP that is integrated in the i.MX8MP, DMA addresses have been
extended to 34 bits, with the 32 MSBs stored in the DMA address
registers and the 2 LSBs set to 0. Shift the buffer addresses right by 2
on that platform.
Signed-off-by: Paul Elder <paul.elder@...asonboard.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@...asonboard.com>
---
Changes since v2:
- Document the RKISP1_FEATURE_DMA_34BIT bit
- Use the rkisp1_has_feature() macro
---
.../platform/rockchip/rkisp1/rkisp1-capture.c | 18 ++++++++++--------
.../platform/rockchip/rkisp1/rkisp1-common.h | 2 ++
.../platform/rockchip/rkisp1/rkisp1-dev.c | 3 ++-
3 files changed, 14 insertions(+), 9 deletions(-)
diff --git a/drivers/media/platform/rockchip/rkisp1/rkisp1-capture.c b/drivers/media/platform/rockchip/rkisp1/rkisp1-capture.c
index 5c6299ab0f78..55e863b762e6 100644
--- a/drivers/media/platform/rockchip/rkisp1/rkisp1-capture.c
+++ b/drivers/media/platform/rockchip/rkisp1/rkisp1-capture.c
@@ -624,6 +624,8 @@ static void rkisp1_dummy_buf_destroy(struct rkisp1_capture *cap)
static void rkisp1_set_next_buf(struct rkisp1_capture *cap)
{
+ u8 shift = rkisp1_has_feature(cap->rkisp1, DMA_34BIT) ? 2 : 0;
+
cap->buf.curr = cap->buf.next;
cap->buf.next = NULL;
@@ -636,7 +638,7 @@ static void rkisp1_set_next_buf(struct rkisp1_capture *cap)
buff_addr = cap->buf.next->buff_addr;
rkisp1_write(cap->rkisp1, cap->config->mi.y_base_ad_init,
- buff_addr[RKISP1_PLANE_Y]);
+ buff_addr[RKISP1_PLANE_Y] >> shift);
/*
* In order to support grey format we capture
* YUV422 planar format from the camera and
@@ -645,17 +647,17 @@ static void rkisp1_set_next_buf(struct rkisp1_capture *cap)
if (cap->pix.cfg->fourcc == V4L2_PIX_FMT_GREY) {
rkisp1_write(cap->rkisp1,
cap->config->mi.cb_base_ad_init,
- cap->buf.dummy.dma_addr);
+ cap->buf.dummy.dma_addr >> shift);
rkisp1_write(cap->rkisp1,
cap->config->mi.cr_base_ad_init,
- cap->buf.dummy.dma_addr);
+ cap->buf.dummy.dma_addr >> shift);
} else {
rkisp1_write(cap->rkisp1,
cap->config->mi.cb_base_ad_init,
- buff_addr[RKISP1_PLANE_CB]);
+ buff_addr[RKISP1_PLANE_CB] >> shift);
rkisp1_write(cap->rkisp1,
cap->config->mi.cr_base_ad_init,
- buff_addr[RKISP1_PLANE_CR]);
+ buff_addr[RKISP1_PLANE_CR] >> shift);
}
} else {
/*
@@ -663,11 +665,11 @@ static void rkisp1_set_next_buf(struct rkisp1_capture *cap)
* throw data if there is no available buffer.
*/
rkisp1_write(cap->rkisp1, cap->config->mi.y_base_ad_init,
- cap->buf.dummy.dma_addr);
+ cap->buf.dummy.dma_addr >> shift);
rkisp1_write(cap->rkisp1, cap->config->mi.cb_base_ad_init,
- cap->buf.dummy.dma_addr);
+ cap->buf.dummy.dma_addr >> shift);
rkisp1_write(cap->rkisp1, cap->config->mi.cr_base_ad_init,
- cap->buf.dummy.dma_addr);
+ cap->buf.dummy.dma_addr >> shift);
}
/* Set plane offsets */
diff --git a/drivers/media/platform/rockchip/rkisp1/rkisp1-common.h b/drivers/media/platform/rockchip/rkisp1/rkisp1-common.h
index 047c670b2310..fff5f5264386 100644
--- a/drivers/media/platform/rockchip/rkisp1/rkisp1-common.h
+++ b/drivers/media/platform/rockchip/rkisp1/rkisp1-common.h
@@ -106,6 +106,7 @@ enum rkisp1_isp_pad {
* @RKISP1_FEATURE_DUAL_CROP: The ISP has the dual crop block at the resizer input
* @RKISP1_FEATURE_RSZ_CROP: The ISP supports cropping in the resizer
* @RKISP1_FEATURE_MAIN_STRIDE: The ISP supports configurable stride on the main path
+ * @RKISP1_FEATURE_DMA_34BIT: The ISP uses 34-bit DMA addresses
*
* The ISP features are stored in a bitmask in &rkisp1_info.features and allow
* the driver to implement support for features present in some ISP versions
@@ -116,6 +117,7 @@ enum rkisp1_feature {
RKISP1_FEATURE_DUAL_CROP = BIT(1),
RKISP1_FEATURE_RSZ_CROP = BIT(2),
RKISP1_FEATURE_MAIN_STRIDE = BIT(3),
+ RKISP1_FEATURE_DMA_34BIT = BIT(4),
};
#define rkisp1_has_feature(rkisp1, feature) \
diff --git a/drivers/media/platform/rockchip/rkisp1/rkisp1-dev.c b/drivers/media/platform/rockchip/rkisp1/rkisp1-dev.c
index 1a3ea5a4af05..2b13962c5c32 100644
--- a/drivers/media/platform/rockchip/rkisp1/rkisp1-dev.c
+++ b/drivers/media/platform/rockchip/rkisp1/rkisp1-dev.c
@@ -516,7 +516,8 @@ static const struct rkisp1_info imx8mp_isp_info = {
.isr_size = ARRAY_SIZE(imx8mp_isp_isrs),
.isp_ver = IMX8MP_V10,
.features = RKISP1_FEATURE_RSZ_CROP
- | RKISP1_FEATURE_MAIN_STRIDE,
+ | RKISP1_FEATURE_MAIN_STRIDE
+ | RKISP1_FEATURE_DMA_34BIT,
};
static const struct of_device_id rkisp1_of_match[] = {
--
2.35.1
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