[PATCH 09/10] media: platform: broadcom: Add bcm2835-isp driver
Jai Luthra
jai.luthra at ideasonboard.com
Tue Jan 13 01:05:29 PST 2026
From: Naushir Patuck <naush at raspberrypi.com>
Driver for the BCM2835 ISP hardware block. This driver uses the MMAL
component to program the ISP hardware through the VC firmware.
The ISP component can produce two video stream outputs, and Bayer
image statistics. This can't be encompassed in a simple V4L2
M2M device, so create a new media device that registers 4 video nodes
under a subdevice (1 sink, 3 sources).
Moreover the ISP hardware can be concurrently used by two users. So we
have two (identical) set of device nodes under separate media graphs.
Further users can be added by changing the BCM2835_ISP_NUM_INSTANCES
define.
Signed-off-by: Naushir Patuck <naush at raspberrypi.com>
Signed-off-by: Jai Luthra <jai.luthra at ideasonboard.com>
---
MAINTAINERS | 9 +
drivers/media/platform/broadcom/Kconfig | 1 +
drivers/media/platform/broadcom/Makefile | 1 +
.../media/platform/broadcom/bcm2835-isp/Kconfig | 14 +
.../media/platform/broadcom/bcm2835-isp/Makefile | 4 +
.../broadcom/bcm2835-isp/bcm2835-isp-ctrls.h | 73 +
.../broadcom/bcm2835-isp/bcm2835-isp-fmts.h | 558 ++++++
.../broadcom/bcm2835-isp/bcm2835-v4l2-isp.c | 1836 ++++++++++++++++++++
include/uapi/linux/bcm2835-isp.h | 347 ++++
9 files changed, 2843 insertions(+)
diff --git a/MAINTAINERS b/MAINTAINERS
index adf1408873f7022f3b08639129c106fb95f8d559..8ebbbe2908a81adc6095cdda38cf09155b36b418 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -4954,6 +4954,15 @@ S: Maintained
F: Documentation/devicetree/bindings/media/brcm,bcm2835-unicam.yaml
F: drivers/media/platform/broadcom/bcm2835-unicam/*
+BROADCOM BCM2835 ISP DRIVER
+M: Raspberry Pi Kernel Maintenance <kernel-list at raspberrypi.com>
+L: linux-media at vger.kernel.org
+S: Maintained
+F: Documentation/admin-guide/media/bcm2835-isp.rst
+F: Documentation/userspace-api/media/v4l/pixfmt-meta-bcm2835-isp-stats.rst
+F: drivers/media/platform/broadcom/bcm2835-isp/*
+F: include/uapi/linux/bcm2835-isp.h
+
BROADCOM BCM47XX MIPS ARCHITECTURE
M: Hauke Mehrtens <hauke at hauke-m.de>
M: Rafał Miłecki <zajec5 at gmail.com>
diff --git a/drivers/media/platform/broadcom/Kconfig b/drivers/media/platform/broadcom/Kconfig
index cab44885182ce658fa136e31485913b1f0547968..0da6c83e97ed176ef70255e8365a1e40a58867cb 100644
--- a/drivers/media/platform/broadcom/Kconfig
+++ b/drivers/media/platform/broadcom/Kconfig
@@ -3,3 +3,4 @@
comment "Broadcom BCM283x/BCM271x media platform drivers"
source "drivers/media/platform/broadcom/bcm2835-unicam/Kconfig"
+source "drivers/media/platform/broadcom/bcm2835-isp/Kconfig"
diff --git a/drivers/media/platform/broadcom/Makefile b/drivers/media/platform/broadcom/Makefile
index 33a89bdb0029bc67d90d16bc0910a681b7675ad7..1d49e586f492fa42f12f55c030c4d621e0a4ecde 100644
--- a/drivers/media/platform/broadcom/Makefile
+++ b/drivers/media/platform/broadcom/Makefile
@@ -1,3 +1,4 @@
# SPDX-License-Identifier: GPL-2.0
obj-y += bcm2835-unicam/
+obj-y += bcm2835-isp/
diff --git a/drivers/media/platform/broadcom/bcm2835-isp/Kconfig b/drivers/media/platform/broadcom/bcm2835-isp/Kconfig
new file mode 100644
index 0000000000000000000000000000000000000000..6222799ebe16ab87f0df4d671eb2c6bc729da0f1
--- /dev/null
+++ b/drivers/media/platform/broadcom/bcm2835-isp/Kconfig
@@ -0,0 +1,14 @@
+config VIDEO_ISP_BCM2835
+ tristate "BCM2835 ISP support"
+ depends on MEDIA_SUPPORT
+ depends on VIDEO_DEV && (ARCH_BCM2835 || COMPILE_TEST)
+ depends on MEDIA_CONTROLLER
+ select BCM2835_VCHIQ_MMAL
+ select VIDEOBUF2_DMA_CONTIG
+ help
+ This is the V4L2 driver for the Broadcom BCM2835 ISP hardware.
+ This operates over the VCHIQ interface to a service running on
+ VideoCore.
+
+ To compile this driver as a module, choose M here: the module
+ will be called bcm2835-isp.
diff --git a/drivers/media/platform/broadcom/bcm2835-isp/Makefile b/drivers/media/platform/broadcom/bcm2835-isp/Makefile
new file mode 100644
index 0000000000000000000000000000000000000000..2c78163264a9f6c7df2279070f5d199b55d62eed
--- /dev/null
+++ b/drivers/media/platform/broadcom/bcm2835-isp/Makefile
@@ -0,0 +1,4 @@
+# SPDX-License-Identifier: GPL-2.0
+bcm2835-isp-objs := bcm2835-v4l2-isp.o
+
+obj-$(CONFIG_VIDEO_ISP_BCM2835) += bcm2835-isp.o
diff --git a/drivers/media/platform/broadcom/bcm2835-isp/bcm2835-isp-ctrls.h b/drivers/media/platform/broadcom/bcm2835-isp/bcm2835-isp-ctrls.h
new file mode 100644
index 0000000000000000000000000000000000000000..0f9816d918be5179eaeefe7eff76fa6c07c66137
--- /dev/null
+++ b/drivers/media/platform/broadcom/bcm2835-isp/bcm2835-isp-ctrls.h
@@ -0,0 +1,73 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Broadcom BCM2835 ISP driver
+ *
+ * Copyright © 2019-2020 Raspberry Pi (Trading) Ltd.
+ *
+ * Author: Naushir Patuck (naush at raspberrypi.com)
+ *
+ */
+
+#ifndef BCM2835_ISP_CTRLS
+#define BCM2835_ISP_CTRLS
+
+#include <linux/bcm2835-isp.h>
+#include <linux/videodev2.h>
+
+struct bcm2835_isp_custom_ctrl {
+ const char *name;
+ u32 id;
+ u32 size;
+ u32 flags;
+};
+
+static const struct bcm2835_isp_custom_ctrl custom_ctrls[] = {
+ {
+ .name = "Colour Correction Matrix",
+ .id = V4L2_CID_USER_BCM2835_ISP_CC_MATRIX,
+ .size = sizeof(struct bcm2835_isp_custom_ccm),
+ .flags = 0
+ }, {
+ .name = "Lens Shading",
+ .id = V4L2_CID_USER_BCM2835_ISP_LENS_SHADING,
+ .size = sizeof(struct bcm2835_isp_lens_shading),
+ .flags = V4L2_CTRL_FLAG_EXECUTE_ON_WRITE
+ }, {
+ .name = "Black Level",
+ .id = V4L2_CID_USER_BCM2835_ISP_BLACK_LEVEL,
+ .size = sizeof(struct bcm2835_isp_black_level),
+ .flags = 0
+ }, {
+ .name = "Green Equalisation",
+ .id = V4L2_CID_USER_BCM2835_ISP_GEQ,
+ .size = sizeof(struct bcm2835_isp_geq),
+ .flags = 0
+ }, {
+ .name = "Gamma",
+ .id = V4L2_CID_USER_BCM2835_ISP_GAMMA,
+ .size = sizeof(struct bcm2835_isp_gamma),
+ .flags = 0
+ }, {
+ .name = "Sharpen",
+ .id = V4L2_CID_USER_BCM2835_ISP_SHARPEN,
+ .size = sizeof(struct bcm2835_isp_sharpen),
+ .flags = 0
+ }, {
+ .name = "Denoise",
+ .id = V4L2_CID_USER_BCM2835_ISP_DENOISE,
+ .size = sizeof(struct bcm2835_isp_denoise),
+ .flags = 0
+ }, {
+ .name = "Colour Denoise",
+ .id = V4L2_CID_USER_BCM2835_ISP_CDN,
+ .size = sizeof(struct bcm2835_isp_cdn),
+ .flags = 0
+ }, {
+ .name = "Defective Pixel Correction",
+ .id = V4L2_CID_USER_BCM2835_ISP_DPC,
+ .size = sizeof(struct bcm2835_isp_dpc),
+ .flags = 0
+ }
+};
+
+#endif
diff --git a/drivers/media/platform/broadcom/bcm2835-isp/bcm2835-isp-fmts.h b/drivers/media/platform/broadcom/bcm2835-isp/bcm2835-isp-fmts.h
new file mode 100644
index 0000000000000000000000000000000000000000..2b35eda5a387c807c936d61557f52209ca48933c
--- /dev/null
+++ b/drivers/media/platform/broadcom/bcm2835-isp/bcm2835-isp-fmts.h
@@ -0,0 +1,558 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Broadcom BCM2835 ISP driver
+ *
+ * Copyright © 2019-2020 Raspberry Pi (Trading) Ltd.
+ *
+ * Author: Naushir Patuck (naush at raspberrypi.com)
+ *
+ */
+
+#ifndef BCM2835_ISP_FMTS
+#define BCM2835_ISP_FMTS
+
+#include <linux/videodev2.h>
+#include <linux/raspberrypi/mmal-encodings.h>
+
+struct bcm2835_isp_fmt {
+ u32 fourcc;
+ int depth;
+ int bytesperline_align;
+ u32 mmal_fmt;
+ int size_multiplier_x2;
+ u32 colorspace_mask;
+ enum v4l2_colorspace colorspace_default;
+ unsigned int step_size;
+};
+
+#define V4L2_COLORSPACE_MASK(colorspace) BIT(colorspace)
+
+#define V4L2_COLORSPACE_MASK_JPEG V4L2_COLORSPACE_MASK(V4L2_COLORSPACE_JPEG)
+#define V4L2_COLORSPACE_MASK_SMPTE170M V4L2_COLORSPACE_MASK(V4L2_COLORSPACE_SMPTE170M)
+#define V4L2_COLORSPACE_MASK_REC709 V4L2_COLORSPACE_MASK(V4L2_COLORSPACE_REC709)
+#define V4L2_COLORSPACE_MASK_SRGB V4L2_COLORSPACE_MASK(V4L2_COLORSPACE_SRGB)
+#define V4L2_COLORSPACE_MASK_RAW V4L2_COLORSPACE_MASK(V4L2_COLORSPACE_RAW)
+
+/*
+ * All three colour spaces JPEG, SMPTE170M and REC709 are fundamentally sRGB
+ * underneath (as near as makes no difference to us), just with different YCbCr
+ * encodings. Therefore the ISP can generate sRGB on its main output and any of
+ * the others on its low resolution output. Applications should, when using both
+ * outputs, program the colour spaces on them to be the same, matching whatever
+ * is requested for the low resolution output, even if the main output is
+ * producing an RGB format. In turn this requires us to allow all these colour
+ * spaces for every YUV/RGB output format.
+ */
+#define V4L2_COLORSPACE_MASK_ALL_SRGB (V4L2_COLORSPACE_MASK_JPEG | \
+ V4L2_COLORSPACE_MASK_SRGB | \
+ V4L2_COLORSPACE_MASK_SMPTE170M | \
+ V4L2_COLORSPACE_MASK_REC709)
+
+static const struct bcm2835_isp_fmt supported_formats[] = {
+ {
+ /* YUV formats */
+ .fourcc = V4L2_PIX_FMT_YUV420,
+ .depth = 8,
+ .bytesperline_align = 64,
+ .mmal_fmt = MMAL_ENCODING_I420,
+ .size_multiplier_x2 = 3,
+ .colorspace_mask = V4L2_COLORSPACE_MASK_ALL_SRGB,
+ .colorspace_default = V4L2_COLORSPACE_JPEG,
+ .step_size = 2,
+ }, {
+ .fourcc = V4L2_PIX_FMT_YVU420,
+ .depth = 8,
+ .bytesperline_align = 64,
+ .mmal_fmt = MMAL_ENCODING_YV12,
+ .size_multiplier_x2 = 3,
+ .colorspace_mask = V4L2_COLORSPACE_MASK_ALL_SRGB,
+ .colorspace_default = V4L2_COLORSPACE_SMPTE170M,
+ .step_size = 2,
+ }, {
+ .fourcc = V4L2_PIX_FMT_NV12,
+ .depth = 8,
+ .bytesperline_align = 32,
+ .mmal_fmt = MMAL_ENCODING_NV12,
+ .size_multiplier_x2 = 3,
+ .colorspace_mask = V4L2_COLORSPACE_MASK_ALL_SRGB,
+ .colorspace_default = V4L2_COLORSPACE_SMPTE170M,
+ .step_size = 2,
+ }, {
+ .fourcc = V4L2_PIX_FMT_NV21,
+ .depth = 8,
+ .bytesperline_align = 32,
+ .mmal_fmt = MMAL_ENCODING_NV21,
+ .size_multiplier_x2 = 3,
+ .colorspace_mask = V4L2_COLORSPACE_MASK_ALL_SRGB,
+ .colorspace_default = V4L2_COLORSPACE_SMPTE170M,
+ .step_size = 2,
+ }, {
+ .fourcc = V4L2_PIX_FMT_YUYV,
+ .depth = 16,
+ .bytesperline_align = 64,
+ .mmal_fmt = MMAL_ENCODING_YUYV,
+ .size_multiplier_x2 = 2,
+ .colorspace_mask = V4L2_COLORSPACE_MASK_ALL_SRGB,
+ .colorspace_default = V4L2_COLORSPACE_SMPTE170M,
+ .step_size = 2,
+ }, {
+ .fourcc = V4L2_PIX_FMT_UYVY,
+ .depth = 16,
+ .bytesperline_align = 64,
+ .mmal_fmt = MMAL_ENCODING_UYVY,
+ .size_multiplier_x2 = 2,
+ .colorspace_mask = V4L2_COLORSPACE_MASK_ALL_SRGB,
+ .colorspace_default = V4L2_COLORSPACE_SMPTE170M,
+ .step_size = 2,
+ }, {
+ .fourcc = V4L2_PIX_FMT_YVYU,
+ .depth = 16,
+ .bytesperline_align = 64,
+ .mmal_fmt = MMAL_ENCODING_YVYU,
+ .size_multiplier_x2 = 2,
+ .colorspace_mask = V4L2_COLORSPACE_MASK_ALL_SRGB,
+ .colorspace_default = V4L2_COLORSPACE_SMPTE170M,
+ .step_size = 2,
+ }, {
+ .fourcc = V4L2_PIX_FMT_VYUY,
+ .depth = 16,
+ .bytesperline_align = 64,
+ .mmal_fmt = MMAL_ENCODING_VYUY,
+ .size_multiplier_x2 = 2,
+ .colorspace_mask = V4L2_COLORSPACE_MASK_ALL_SRGB,
+ .colorspace_default = V4L2_COLORSPACE_SMPTE170M,
+ .step_size = 2,
+ }, {
+ /* RGB formats */
+ .fourcc = V4L2_PIX_FMT_RGB24,
+ .depth = 24,
+ .bytesperline_align = 32,
+ .mmal_fmt = MMAL_ENCODING_RGB24,
+ .size_multiplier_x2 = 2,
+ .colorspace_mask = V4L2_COLORSPACE_MASK_ALL_SRGB,
+ .colorspace_default = V4L2_COLORSPACE_SRGB,
+ .step_size = 1,
+ }, {
+ .fourcc = V4L2_PIX_FMT_RGB565,
+ .depth = 16,
+ .bytesperline_align = 32,
+ .mmal_fmt = MMAL_ENCODING_RGB16,
+ .size_multiplier_x2 = 2,
+ .colorspace_mask = V4L2_COLORSPACE_MASK_ALL_SRGB,
+ .colorspace_default = V4L2_COLORSPACE_SRGB,
+ .step_size = 1,
+ }, {
+ .fourcc = V4L2_PIX_FMT_BGR24,
+ .depth = 24,
+ .bytesperline_align = 32,
+ .mmal_fmt = MMAL_ENCODING_BGR24,
+ .size_multiplier_x2 = 2,
+ .colorspace_mask = V4L2_COLORSPACE_MASK_ALL_SRGB,
+ .colorspace_default = V4L2_COLORSPACE_SRGB,
+ .step_size = 1,
+ }, {
+ .fourcc = V4L2_PIX_FMT_XBGR32,
+ .depth = 32,
+ .bytesperline_align = 64,
+ .mmal_fmt = MMAL_ENCODING_BGRA,
+ .size_multiplier_x2 = 2,
+ .colorspace_mask = V4L2_COLORSPACE_MASK_ALL_SRGB,
+ .colorspace_default = V4L2_COLORSPACE_SRGB,
+ .step_size = 1,
+ }, {
+ .fourcc = V4L2_PIX_FMT_RGBX32,
+ .depth = 32,
+ .bytesperline_align = 64,
+ .mmal_fmt = MMAL_ENCODING_RGBA,
+ .size_multiplier_x2 = 2,
+ .colorspace_mask = V4L2_COLORSPACE_MASK_ALL_SRGB,
+ .colorspace_default = V4L2_COLORSPACE_SRGB,
+ .step_size = 1,
+ }, {
+ /* Bayer formats */
+ /* 8 bit */
+ .fourcc = V4L2_PIX_FMT_SRGGB8,
+ .depth = 8,
+ .bytesperline_align = 32,
+ .mmal_fmt = MMAL_ENCODING_BAYER_SRGGB8,
+ .size_multiplier_x2 = 2,
+ .colorspace_mask = V4L2_COLORSPACE_MASK_RAW,
+ .colorspace_default = V4L2_COLORSPACE_RAW,
+ .step_size = 2,
+ }, {
+ .fourcc = V4L2_PIX_FMT_SBGGR8,
+ .depth = 8,
+ .bytesperline_align = 32,
+ .mmal_fmt = MMAL_ENCODING_BAYER_SBGGR8,
+ .size_multiplier_x2 = 2,
+ .colorspace_mask = V4L2_COLORSPACE_MASK_RAW,
+ .colorspace_default = V4L2_COLORSPACE_RAW,
+ .step_size = 2,
+ }, {
+ .fourcc = V4L2_PIX_FMT_SGRBG8,
+ .depth = 8,
+ .bytesperline_align = 32,
+ .mmal_fmt = MMAL_ENCODING_BAYER_SGRBG8,
+ .size_multiplier_x2 = 2,
+ .colorspace_mask = V4L2_COLORSPACE_MASK_RAW,
+ .colorspace_default = V4L2_COLORSPACE_RAW,
+ .step_size = 2,
+ }, {
+ .fourcc = V4L2_PIX_FMT_SGBRG8,
+ .depth = 8,
+ .bytesperline_align = 32,
+ .mmal_fmt = MMAL_ENCODING_BAYER_SGBRG8,
+ .size_multiplier_x2 = 2,
+ .colorspace_mask = V4L2_COLORSPACE_MASK_RAW,
+ .colorspace_default = V4L2_COLORSPACE_RAW,
+ .step_size = 2,
+ }, {
+ /* 10 bit */
+ .fourcc = V4L2_PIX_FMT_SRGGB10P,
+ .depth = 10,
+ .bytesperline_align = 32,
+ .mmal_fmt = MMAL_ENCODING_BAYER_SRGGB10P,
+ .size_multiplier_x2 = 2,
+ .colorspace_mask = V4L2_COLORSPACE_MASK_RAW,
+ .colorspace_default = V4L2_COLORSPACE_RAW,
+ .step_size = 2,
+ }, {
+ .fourcc = V4L2_PIX_FMT_SBGGR10P,
+ .depth = 10,
+ .bytesperline_align = 32,
+ .mmal_fmt = MMAL_ENCODING_BAYER_SBGGR10P,
+ .size_multiplier_x2 = 2,
+ .colorspace_mask = V4L2_COLORSPACE_MASK_RAW,
+ .colorspace_default = V4L2_COLORSPACE_RAW,
+ .step_size = 2,
+ }, {
+ .fourcc = V4L2_PIX_FMT_SGRBG10P,
+ .depth = 10,
+ .bytesperline_align = 32,
+ .mmal_fmt = MMAL_ENCODING_BAYER_SGRBG10P,
+ .size_multiplier_x2 = 2,
+ .colorspace_mask = V4L2_COLORSPACE_MASK_RAW,
+ .colorspace_default = V4L2_COLORSPACE_RAW,
+ .step_size = 2,
+ }, {
+ .fourcc = V4L2_PIX_FMT_SGBRG10P,
+ .depth = 10,
+ .bytesperline_align = 32,
+ .mmal_fmt = MMAL_ENCODING_BAYER_SGBRG10P,
+ .size_multiplier_x2 = 2,
+ .colorspace_mask = V4L2_COLORSPACE_MASK_RAW,
+ .colorspace_default = V4L2_COLORSPACE_RAW,
+ .step_size = 2,
+ }, {
+ /* 12 bit */
+ .fourcc = V4L2_PIX_FMT_SRGGB12P,
+ .depth = 12,
+ .bytesperline_align = 32,
+ .mmal_fmt = MMAL_ENCODING_BAYER_SRGGB12P,
+ .size_multiplier_x2 = 2,
+ .colorspace_mask = V4L2_COLORSPACE_MASK_RAW,
+ .colorspace_default = V4L2_COLORSPACE_RAW,
+ .step_size = 2,
+ }, {
+ .fourcc = V4L2_PIX_FMT_SBGGR12P,
+ .depth = 12,
+ .bytesperline_align = 32,
+ .mmal_fmt = MMAL_ENCODING_BAYER_SBGGR12P,
+ .size_multiplier_x2 = 2,
+ .colorspace_mask = V4L2_COLORSPACE_MASK_RAW,
+ .colorspace_default = V4L2_COLORSPACE_RAW,
+ .step_size = 2,
+ }, {
+ .fourcc = V4L2_PIX_FMT_SGRBG12P,
+ .depth = 12,
+ .bytesperline_align = 32,
+ .mmal_fmt = MMAL_ENCODING_BAYER_SGRBG12P,
+ .size_multiplier_x2 = 2,
+ .colorspace_mask = V4L2_COLORSPACE_MASK_RAW,
+ .colorspace_default = V4L2_COLORSPACE_RAW,
+ .step_size = 2,
+ }, {
+ .fourcc = V4L2_PIX_FMT_SGBRG12P,
+ .depth = 12,
+ .bytesperline_align = 32,
+ .mmal_fmt = MMAL_ENCODING_BAYER_SGBRG12P,
+ .size_multiplier_x2 = 2,
+ .colorspace_mask = V4L2_COLORSPACE_MASK_RAW,
+ .colorspace_default = V4L2_COLORSPACE_RAW,
+ .step_size = 2,
+ }, {
+ /* 14 bit */
+ .fourcc = V4L2_PIX_FMT_SRGGB14P,
+ .depth = 14,
+ .bytesperline_align = 32,
+ .mmal_fmt = MMAL_ENCODING_BAYER_SRGGB14P,
+ .size_multiplier_x2 = 2,
+ .colorspace_mask = V4L2_COLORSPACE_MASK_RAW,
+ .colorspace_default = V4L2_COLORSPACE_RAW,
+ .step_size = 2,
+ }, {
+ .fourcc = V4L2_PIX_FMT_SBGGR14P,
+ .depth = 14,
+ .bytesperline_align = 32,
+ .mmal_fmt = MMAL_ENCODING_BAYER_SBGGR14P,
+ .size_multiplier_x2 = 2,
+ .colorspace_mask = V4L2_COLORSPACE_MASK_RAW,
+ .colorspace_default = V4L2_COLORSPACE_RAW,
+ .step_size = 2,
+ }, {
+ .fourcc = V4L2_PIX_FMT_SGRBG14P,
+ .depth = 14,
+ .bytesperline_align = 32,
+ .mmal_fmt = MMAL_ENCODING_BAYER_SGRBG14P,
+ .size_multiplier_x2 = 2,
+ .colorspace_mask = V4L2_COLORSPACE_MASK_RAW,
+ .colorspace_default = V4L2_COLORSPACE_RAW,
+ .step_size = 2,
+ }, {
+ .fourcc = V4L2_PIX_FMT_SGBRG14P,
+ .depth = 14,
+ .bytesperline_align = 32,
+ .mmal_fmt = MMAL_ENCODING_BAYER_SGBRG14P,
+ .size_multiplier_x2 = 2,
+ .colorspace_mask = V4L2_COLORSPACE_MASK_RAW,
+ .colorspace_default = V4L2_COLORSPACE_RAW,
+ .step_size = 2,
+ }, {
+ /* 16 bit */
+ .fourcc = V4L2_PIX_FMT_SRGGB16,
+ .depth = 16,
+ .bytesperline_align = 32,
+ .mmal_fmt = MMAL_ENCODING_BAYER_SRGGB16,
+ .size_multiplier_x2 = 2,
+ .colorspace_mask = V4L2_COLORSPACE_MASK_RAW,
+ .colorspace_default = V4L2_COLORSPACE_RAW,
+ .step_size = 2,
+ }, {
+ .fourcc = V4L2_PIX_FMT_SBGGR16,
+ .depth = 16,
+ .bytesperline_align = 32,
+ .mmal_fmt = MMAL_ENCODING_BAYER_SBGGR16,
+ .size_multiplier_x2 = 2,
+ .colorspace_mask = V4L2_COLORSPACE_MASK_RAW,
+ .colorspace_default = V4L2_COLORSPACE_RAW,
+ .step_size = 2,
+ }, {
+ .fourcc = V4L2_PIX_FMT_SGRBG16,
+ .depth = 16,
+ .bytesperline_align = 32,
+ .mmal_fmt = MMAL_ENCODING_BAYER_SGRBG16,
+ .size_multiplier_x2 = 2,
+ .colorspace_mask = V4L2_COLORSPACE_MASK_RAW,
+ .colorspace_default = V4L2_COLORSPACE_RAW,
+ .step_size = 2,
+ }, {
+ .fourcc = V4L2_PIX_FMT_SGBRG16,
+ .depth = 16,
+ .bytesperline_align = 32,
+ .mmal_fmt = MMAL_ENCODING_BAYER_SGBRG16,
+ .size_multiplier_x2 = 2,
+ .colorspace_mask = V4L2_COLORSPACE_MASK_RAW,
+ .colorspace_default = V4L2_COLORSPACE_RAW,
+ .step_size = 2,
+ }, {
+ /* Bayer formats unpacked to 16bpp */
+ /* 10 bit */
+ .fourcc = V4L2_PIX_FMT_SRGGB10,
+ .depth = 16,
+ .bytesperline_align = 32,
+ .mmal_fmt = MMAL_ENCODING_BAYER_SRGGB10,
+ .size_multiplier_x2 = 2,
+ .colorspace_mask = V4L2_COLORSPACE_MASK_RAW,
+ .colorspace_default = V4L2_COLORSPACE_RAW,
+ .step_size = 2,
+ }, {
+ .fourcc = V4L2_PIX_FMT_SBGGR10,
+ .depth = 16,
+ .bytesperline_align = 32,
+ .mmal_fmt = MMAL_ENCODING_BAYER_SBGGR10,
+ .size_multiplier_x2 = 2,
+ .colorspace_mask = V4L2_COLORSPACE_MASK_RAW,
+ .colorspace_default = V4L2_COLORSPACE_RAW,
+ .step_size = 2,
+ }, {
+ .fourcc = V4L2_PIX_FMT_SGRBG10,
+ .depth = 16,
+ .bytesperline_align = 32,
+ .mmal_fmt = MMAL_ENCODING_BAYER_SGRBG10,
+ .size_multiplier_x2 = 2,
+ .colorspace_mask = V4L2_COLORSPACE_MASK_RAW,
+ .colorspace_default = V4L2_COLORSPACE_RAW,
+ .step_size = 2,
+ }, {
+ .fourcc = V4L2_PIX_FMT_SGBRG10,
+ .depth = 16,
+ .bytesperline_align = 32,
+ .mmal_fmt = MMAL_ENCODING_BAYER_SGBRG10,
+ .size_multiplier_x2 = 2,
+ .colorspace_mask = V4L2_COLORSPACE_MASK_RAW,
+ .colorspace_default = V4L2_COLORSPACE_RAW,
+ .step_size = 2,
+ }, {
+ /* 12 bit */
+ .fourcc = V4L2_PIX_FMT_SRGGB12,
+ .depth = 16,
+ .bytesperline_align = 32,
+ .mmal_fmt = MMAL_ENCODING_BAYER_SRGGB12,
+ .size_multiplier_x2 = 2,
+ .colorspace_mask = V4L2_COLORSPACE_MASK_RAW,
+ .colorspace_default = V4L2_COLORSPACE_RAW,
+ .step_size = 2,
+ }, {
+ .fourcc = V4L2_PIX_FMT_SBGGR12,
+ .depth = 16,
+ .bytesperline_align = 32,
+ .mmal_fmt = MMAL_ENCODING_BAYER_SBGGR12,
+ .size_multiplier_x2 = 2,
+ .colorspace_mask = V4L2_COLORSPACE_MASK_RAW,
+ .colorspace_default = V4L2_COLORSPACE_RAW,
+ .step_size = 2,
+ }, {
+ .fourcc = V4L2_PIX_FMT_SGRBG12,
+ .depth = 16,
+ .bytesperline_align = 32,
+ .mmal_fmt = MMAL_ENCODING_BAYER_SGRBG12,
+ .size_multiplier_x2 = 2,
+ .colorspace_mask = V4L2_COLORSPACE_MASK_RAW,
+ .colorspace_default = V4L2_COLORSPACE_RAW,
+ .step_size = 2,
+ }, {
+ .fourcc = V4L2_PIX_FMT_SGBRG12,
+ .depth = 16,
+ .bytesperline_align = 32,
+ .mmal_fmt = MMAL_ENCODING_BAYER_SGBRG12,
+ .size_multiplier_x2 = 2,
+ .colorspace_mask = V4L2_COLORSPACE_MASK_RAW,
+ .colorspace_default = V4L2_COLORSPACE_RAW,
+ .step_size = 2,
+ }, {
+ /* 14 bit */
+ .fourcc = V4L2_PIX_FMT_SRGGB14,
+ .depth = 16,
+ .bytesperline_align = 32,
+ .mmal_fmt = MMAL_ENCODING_BAYER_SRGGB14,
+ .size_multiplier_x2 = 2,
+ .colorspace_mask = V4L2_COLORSPACE_MASK_RAW,
+ .colorspace_default = V4L2_COLORSPACE_RAW,
+ .step_size = 2,
+ }, {
+ .fourcc = V4L2_PIX_FMT_SBGGR14,
+ .depth = 16,
+ .bytesperline_align = 32,
+ .mmal_fmt = MMAL_ENCODING_BAYER_SBGGR14,
+ .size_multiplier_x2 = 2,
+ .colorspace_mask = V4L2_COLORSPACE_MASK_RAW,
+ .colorspace_default = V4L2_COLORSPACE_RAW,
+ .step_size = 2,
+ }, {
+ .fourcc = V4L2_PIX_FMT_SGRBG14,
+ .depth = 16,
+ .bytesperline_align = 32,
+ .mmal_fmt = MMAL_ENCODING_BAYER_SGRBG14,
+ .size_multiplier_x2 = 2,
+ .colorspace_mask = V4L2_COLORSPACE_MASK_RAW,
+ .colorspace_default = V4L2_COLORSPACE_RAW,
+ .step_size = 2,
+ }, {
+ .fourcc = V4L2_PIX_FMT_SGBRG14,
+ .depth = 16,
+ .bytesperline_align = 32,
+ .mmal_fmt = MMAL_ENCODING_BAYER_SGBRG14,
+ .size_multiplier_x2 = 2,
+ .colorspace_mask = V4L2_COLORSPACE_MASK_RAW,
+ .colorspace_default = V4L2_COLORSPACE_RAW,
+ .step_size = 2,
+ }, {
+ /* Monochrome MIPI formats */
+ /* 8 bit */
+ .fourcc = V4L2_PIX_FMT_GREY,
+ .depth = 8,
+ .bytesperline_align = 32,
+ .mmal_fmt = MMAL_ENCODING_GREY,
+ .size_multiplier_x2 = 2,
+ .colorspace_mask = V4L2_COLORSPACE_MASK_RAW,
+ .colorspace_default = V4L2_COLORSPACE_RAW,
+ .step_size = 2,
+ }, {
+ /* 10 bit */
+ .fourcc = V4L2_PIX_FMT_Y10P,
+ .depth = 10,
+ .bytesperline_align = 32,
+ .mmal_fmt = MMAL_ENCODING_Y10P,
+ .size_multiplier_x2 = 2,
+ .colorspace_mask = V4L2_COLORSPACE_MASK_RAW,
+ .colorspace_default = V4L2_COLORSPACE_RAW,
+ .step_size = 2,
+ }, {
+ /* 12 bit */
+ .fourcc = V4L2_PIX_FMT_Y12P,
+ .depth = 12,
+ .bytesperline_align = 32,
+ .mmal_fmt = MMAL_ENCODING_Y12P,
+ .size_multiplier_x2 = 2,
+ .colorspace_mask = V4L2_COLORSPACE_MASK_RAW,
+ .colorspace_default = V4L2_COLORSPACE_RAW,
+ .step_size = 2,
+ }, {
+ /* 14 bit */
+ .fourcc = V4L2_PIX_FMT_Y14P,
+ .depth = 14,
+ .bytesperline_align = 32,
+ .mmal_fmt = MMAL_ENCODING_Y14P,
+ .size_multiplier_x2 = 2,
+ .colorspace_mask = V4L2_COLORSPACE_MASK_RAW,
+ .colorspace_default = V4L2_COLORSPACE_RAW,
+ .step_size = 2,
+ }, {
+ /* 16 bit */
+ .fourcc = V4L2_PIX_FMT_Y16,
+ .depth = 16,
+ .bytesperline_align = 32,
+ .mmal_fmt = MMAL_ENCODING_Y16,
+ .size_multiplier_x2 = 2,
+ .colorspace_mask = V4L2_COLORSPACE_MASK_RAW,
+ .colorspace_default = V4L2_COLORSPACE_RAW,
+ .step_size = 2,
+ }, {
+ /* 10 bit as 16bpp */
+ .fourcc = V4L2_PIX_FMT_Y10,
+ .depth = 16,
+ .bytesperline_align = 32,
+ .mmal_fmt = MMAL_ENCODING_Y10,
+ .size_multiplier_x2 = 2,
+ .colorspace_mask = V4L2_COLORSPACE_MASK_RAW,
+ .colorspace_default = V4L2_COLORSPACE_RAW,
+ .step_size = 2,
+ }, {
+ /* 12 bit as 16bpp */
+ .fourcc = V4L2_PIX_FMT_Y12,
+ .depth = 16,
+ .bytesperline_align = 32,
+ .mmal_fmt = MMAL_ENCODING_Y12,
+ .size_multiplier_x2 = 2,
+ .colorspace_mask = V4L2_COLORSPACE_MASK_RAW,
+ .colorspace_default = V4L2_COLORSPACE_RAW,
+ .step_size = 2,
+ }, {
+ /* 14 bit as 16bpp */
+ .fourcc = V4L2_PIX_FMT_Y14,
+ .depth = 16,
+ .bytesperline_align = 32,
+ .mmal_fmt = MMAL_ENCODING_Y14,
+ .size_multiplier_x2 = 2,
+ .colorspace_mask = V4L2_COLORSPACE_MASK_RAW,
+ .colorspace_default = V4L2_COLORSPACE_RAW,
+ .step_size = 2,
+ }, {
+ .fourcc = V4L2_META_FMT_BCM2835_ISP_STATS,
+ .depth = 8,
+ .mmal_fmt = MMAL_ENCODING_BRCM_STATS,
+ /* The rest are not valid fields for stats. */
+ }
+};
+
+#endif
diff --git a/drivers/media/platform/broadcom/bcm2835-isp/bcm2835-v4l2-isp.c b/drivers/media/platform/broadcom/bcm2835-isp/bcm2835-v4l2-isp.c
new file mode 100644
index 0000000000000000000000000000000000000000..c0813150f8722b97410cfb710707dc9becf27aaf
--- /dev/null
+++ b/drivers/media/platform/broadcom/bcm2835-isp/bcm2835-v4l2-isp.c
@@ -0,0 +1,1836 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Broadcom BCM2835 ISP driver
+ *
+ * Copyright © 2019-2020 Raspberry Pi (Trading) Ltd.
+ *
+ * Author: Naushir Patuck (naush at raspberrypi.com)
+ *
+ */
+
+#include <linux/module.h>
+#include <linux/raspberrypi/mmal-msg.h>
+#include <linux/raspberrypi/mmal-parameters.h>
+#include <linux/raspberrypi/mmal-vchiq.h>
+#include <linux/raspberrypi/vchiq_bus.h>
+#include <linux/raspberrypi/vc_sm_knl.h>
+
+#include <media/v4l2-ctrls.h>
+#include <media/v4l2-device.h>
+#include <media/v4l2-event.h>
+#include <media/v4l2-ioctl.h>
+#include <media/videobuf2-dma-contig.h>
+
+#include "bcm2835-isp-ctrls.h"
+#include "bcm2835-isp-fmts.h"
+
+/*
+ * We want to instantiate 2 independent instances allowing 2 simultaneous users
+ * of the ISP hardware.
+ */
+#define BCM2835_ISP_NUM_INSTANCES 2
+
+MODULE_IMPORT_NS("DMA_BUF");
+
+static unsigned int debug;
+module_param(debug, uint, 0644);
+MODULE_PARM_DESC(debug, "activates debug info");
+
+static unsigned int video_nr[BCM2835_ISP_NUM_INSTANCES] = { 13, 20 };
+module_param_array(video_nr, uint, NULL, 0644);
+MODULE_PARM_DESC(video_nr, "base video device numbers");
+
+#define BCM2835_ISP_NAME "bcm2835-isp"
+#define BCM2835_ISP_ENTITY_NAME_LEN 32
+
+#define BCM2835_ISP_NUM_OUTPUTS 1
+#define BCM2835_ISP_NUM_CAPTURES 2
+#define BCM2835_ISP_NUM_METADATA 1
+
+#define BCM2835_ISP_NUM_NODES \
+ (BCM2835_ISP_NUM_OUTPUTS + BCM2835_ISP_NUM_CAPTURES + \
+ BCM2835_ISP_NUM_METADATA)
+
+/* Default frame dimension of 1280 pixels. */
+#define DEFAULT_DIM 1280U
+/*
+ * Maximum frame dimension of 16384 pixels. Even though the ISP runs in tiles,
+ * have a sensible limit so that we do not create an excessive number of tiles
+ * to process.
+ */
+#define MAX_DIM 16384U
+/*
+ * Minimum frame dimension of 64 pixels. Anything lower, and the tiling
+ * algorithm may not be able to cope when applying filter context.
+ */
+#define MIN_DIM 64U
+
+/* Timeout for stop_streaming to allow all buffers to return */
+#define COMPLETE_TIMEOUT (2 * HZ)
+
+/* Per-queue, driver-specific private data */
+struct bcm2835_isp_q_data {
+ /*
+ * These parameters should be treated as gospel, with everything else
+ * being determined from them.
+ */
+ unsigned int bytesperline;
+ unsigned int width;
+ unsigned int height;
+ unsigned int sizeimage;
+ enum v4l2_colorspace colorspace;
+ const struct bcm2835_isp_fmt *fmt;
+};
+
+/*
+ * Structure to describe a single node /dev/video<N> which represents a single
+ * input or output queue to the ISP device.
+ */
+struct bcm2835_isp_node {
+ int vfl_dir;
+ unsigned int id;
+ const char *name;
+ struct vchiq_mmal_port *port;
+ struct video_device vfd;
+ struct media_pad pad;
+ struct media_intf_devnode *intf_devnode;
+ struct media_link *intf_link;
+ struct mutex lock; /* top level device node lock */
+ struct mutex queue_lock;
+
+ struct vb2_queue queue;
+ unsigned int sequence;
+
+ /* The list of formats supported on the node. */
+ struct bcm2835_isp_fmt const **supported_fmts;
+ unsigned int num_supported_fmts;
+
+ struct bcm2835_isp_q_data q_data;
+
+ /* Parent device structure */
+ struct bcm2835_isp_dev *dev;
+
+ bool registered;
+ bool media_node_registered;
+};
+
+/*
+ * Structure representing the entire ISP device, comprising several input and
+ * output nodes /dev/video<N>.
+ */
+struct bcm2835_isp_dev {
+ struct v4l2_device v4l2_dev;
+ struct device *dev;
+ struct v4l2_ctrl_handler ctrl_handler;
+ struct media_device mdev;
+ struct media_entity entity;
+ bool media_device_registered;
+ bool media_entity_registered;
+ struct vchiq_mmal_instance *mmal_instance;
+ struct vchiq_mmal_component *component;
+ struct completion frame_cmplt;
+
+ struct bcm2835_isp_node node[BCM2835_ISP_NUM_NODES];
+ struct media_pad pad[BCM2835_ISP_NUM_NODES];
+ atomic_t num_streaming;
+
+ /* Image pipeline controls. */
+ int r_gain;
+ int b_gain;
+ struct dma_buf *last_ls_dmabuf;
+ struct mmal_parameter_lens_shading_v2 ls;
+};
+
+struct bcm2835_isp_buffer {
+ struct vb2_v4l2_buffer vb;
+ struct mmal_buffer mmal;
+};
+
+static
+inline struct bcm2835_isp_dev *node_get_dev(struct bcm2835_isp_node *node)
+{
+ return node->dev;
+}
+
+static inline bool node_is_output(struct bcm2835_isp_node *node)
+{
+ return node->queue.type == V4L2_BUF_TYPE_VIDEO_OUTPUT;
+}
+
+static inline bool node_is_capture(struct bcm2835_isp_node *node)
+{
+ return node->queue.type == V4L2_BUF_TYPE_VIDEO_CAPTURE;
+}
+
+static inline bool node_is_stats(struct bcm2835_isp_node *node)
+{
+ return node->queue.type == V4L2_BUF_TYPE_META_CAPTURE;
+}
+
+static inline enum v4l2_buf_type index_to_queue_type(int index)
+{
+ if (index < BCM2835_ISP_NUM_OUTPUTS)
+ return V4L2_BUF_TYPE_VIDEO_OUTPUT;
+ else if (index < BCM2835_ISP_NUM_OUTPUTS + BCM2835_ISP_NUM_CAPTURES)
+ return V4L2_BUF_TYPE_VIDEO_CAPTURE;
+ else
+ return V4L2_BUF_TYPE_META_CAPTURE;
+}
+
+static int set_isp_param(struct bcm2835_isp_node *node, u32 parameter,
+ void *value, u32 value_size)
+{
+ struct bcm2835_isp_dev *dev = node_get_dev(node);
+
+ return vchiq_mmal_port_parameter_set(dev->mmal_instance, node->port,
+ parameter, value, value_size);
+}
+
+static int set_wb_gains(struct bcm2835_isp_node *node)
+{
+ struct bcm2835_isp_dev *dev = node_get_dev(node);
+ struct mmal_parameter_awbgains gains = {
+ .r_gain = { dev->r_gain, 1000 },
+ .b_gain = { dev->b_gain, 1000 }
+ };
+
+ return set_isp_param(node, MMAL_PARAMETER_CUSTOM_AWB_GAINS,
+ &gains, sizeof(gains));
+}
+
+static int set_digital_gain(struct bcm2835_isp_node *node, uint32_t gain)
+{
+ struct s32_fract digital_gain = {
+ .numerator = gain,
+ .denominator = 1000
+ };
+
+ return set_isp_param(node, MMAL_PARAMETER_DIGITAL_GAIN,
+ &digital_gain, sizeof(digital_gain));
+}
+
+static const struct bcm2835_isp_fmt *get_fmt(u32 mmal_fmt)
+{
+ unsigned int i;
+
+ for (i = 0; i < ARRAY_SIZE(supported_formats); i++) {
+ if (supported_formats[i].mmal_fmt == mmal_fmt)
+ return &supported_formats[i];
+ }
+ return NULL;
+}
+
+static const
+struct bcm2835_isp_fmt *find_format_by_fourcc(unsigned int fourcc,
+ struct bcm2835_isp_node *node)
+{
+ const struct bcm2835_isp_fmt *fmt;
+ unsigned int i;
+
+ for (i = 0; i < node->num_supported_fmts; i++) {
+ fmt = node->supported_fmts[i];
+ if (fmt->fourcc == fourcc)
+ return fmt;
+ }
+
+ return NULL;
+}
+
+static const
+struct bcm2835_isp_fmt *find_format(struct v4l2_format *f,
+ struct bcm2835_isp_node *node)
+{
+ return find_format_by_fourcc(node_is_stats(node) ?
+ f->fmt.meta.dataformat :
+ f->fmt.pix.pixelformat,
+ node);
+}
+
+/* vb2_to_mmal_buffer() - converts vb2 buffer header to MMAL
+ *
+ * Copies all the required fields from a VB2 buffer to the MMAL buffer header,
+ * ready for sending to the VPU.
+ */
+static void vb2_to_mmal_buffer(struct mmal_buffer *buf,
+ struct vb2_v4l2_buffer *vb2)
+{
+ u64 pts;
+
+ buf->mmal_flags = 0;
+ if (vb2->flags & V4L2_BUF_FLAG_KEYFRAME)
+ buf->mmal_flags |= MMAL_BUFFER_HEADER_FLAG_KEYFRAME;
+
+ /* Data must be framed correctly as one frame per buffer. */
+ buf->mmal_flags |= MMAL_BUFFER_HEADER_FLAG_FRAME_END;
+
+ buf->length = vb2->vb2_buf.planes[0].bytesused;
+ /*
+ * Minor ambiguity in the V4L2 spec as to whether passing in a 0 length
+ * buffer, or one with V4L2_BUF_FLAG_LAST set denotes end of stream.
+ * Handle either.
+ */
+ if (!buf->length || vb2->flags & V4L2_BUF_FLAG_LAST)
+ buf->mmal_flags |= MMAL_BUFFER_HEADER_FLAG_EOS;
+
+ /* vb2 timestamps in nsecs, mmal in usecs */
+ pts = vb2->vb2_buf.timestamp;
+ do_div(pts, 1000);
+ buf->pts = pts;
+ buf->dts = MMAL_TIME_UNKNOWN;
+}
+
+static void mmal_buffer_cb(struct vchiq_mmal_instance *instance,
+ struct vchiq_mmal_port *port, int status,
+ struct mmal_buffer *mmal_buf)
+{
+ struct bcm2835_isp_buffer *q_buf;
+ struct bcm2835_isp_node *node = port->cb_ctx;
+ struct bcm2835_isp_dev *dev = node_get_dev(node);
+ struct vb2_v4l2_buffer *vb2;
+
+ q_buf = container_of(mmal_buf, struct bcm2835_isp_buffer, mmal);
+ vb2 = &q_buf->vb;
+ v4l2_dbg(2, debug, &dev->v4l2_dev,
+ "%s: port:%s[%d], status:%d, buf:%p, dmabuf:%p, length:%lu, flags %u, pts %lld\n",
+ __func__, node_is_output(node) ? "input" : "output", node->id,
+ status, mmal_buf, mmal_buf->dma_buf, mmal_buf->length,
+ mmal_buf->mmal_flags, mmal_buf->pts);
+
+ if (status) {
+ /* error in transfer */
+ if (vb2) {
+ /* there was a buffer with the error so return it */
+ vb2_buffer_done(&vb2->vb2_buf, VB2_BUF_STATE_ERROR);
+ }
+ return;
+ }
+
+ /* vb2 timestamps in nsecs, mmal in usecs */
+ vb2->vb2_buf.timestamp = mmal_buf->pts * 1000;
+ vb2->sequence = node->sequence++;
+ vb2_set_plane_payload(&vb2->vb2_buf, 0, mmal_buf->length);
+ vb2_buffer_done(&vb2->vb2_buf, VB2_BUF_STATE_DONE);
+
+ if (!port->enabled)
+ complete(&dev->frame_cmplt);
+}
+
+struct colorspace_translation {
+ enum v4l2_colorspace v4l2_value;
+ u32 mmal_value;
+};
+
+static u32 translate_color_space(enum v4l2_colorspace color_space)
+{
+ static const struct colorspace_translation translations[] = {
+ { V4L2_COLORSPACE_DEFAULT, MMAL_COLOR_SPACE_UNKNOWN },
+ { V4L2_COLORSPACE_SMPTE170M, MMAL_COLOR_SPACE_ITUR_BT601 },
+ { V4L2_COLORSPACE_SMPTE240M, MMAL_COLOR_SPACE_SMPTE240M },
+ { V4L2_COLORSPACE_REC709, MMAL_COLOR_SPACE_ITUR_BT709 },
+ /* V4L2_COLORSPACE_BT878 unavailable */
+ { V4L2_COLORSPACE_470_SYSTEM_M, MMAL_COLOR_SPACE_BT470_2_M },
+ { V4L2_COLORSPACE_470_SYSTEM_BG, MMAL_COLOR_SPACE_BT470_2_BG },
+ { V4L2_COLORSPACE_JPEG, MMAL_COLOR_SPACE_JPEG_JFIF },
+ /*
+ * We don't have an encoding for SRGB as such, but VideoCore
+ * will do the right thing if it gets "unknown".
+ */
+ { V4L2_COLORSPACE_SRGB, MMAL_COLOR_SPACE_UNKNOWN },
+ /* V4L2_COLORSPACE_OPRGB unavailable */
+ /* V4L2_COLORSPACE_BT2020 unavailable */
+ /* V4L2_COLORSPACE_RAW unavailable */
+ /* V4L2_COLORSPACE_DCI_P3 unavailable */
+ };
+
+ unsigned int i;
+
+ for (i = 0; i < ARRAY_SIZE(translations); i++) {
+ if (color_space == translations[i].v4l2_value)
+ return translations[i].mmal_value;
+ }
+
+ return MMAL_COLOR_SPACE_UNKNOWN;
+}
+
+static void setup_mmal_port_format(struct bcm2835_isp_node *node,
+ struct vchiq_mmal_port *port)
+{
+ struct bcm2835_isp_q_data *q_data = &node->q_data;
+
+ port->format.encoding = q_data->fmt->mmal_fmt;
+ /* Raw image format - set width/height */
+ port->es.video.width = (q_data->bytesperline << 3) / q_data->fmt->depth;
+ port->es.video.height = q_data->height;
+ port->es.video.crop.width = q_data->width;
+ port->es.video.crop.height = q_data->height;
+ port->es.video.crop.x = 0;
+ port->es.video.crop.y = 0;
+ port->es.video.color_space = translate_color_space(q_data->colorspace);
+};
+
+static int setup_mmal_port(struct bcm2835_isp_node *node)
+{
+ struct bcm2835_isp_dev *dev = node_get_dev(node);
+ unsigned int enable = 1;
+ int ret;
+
+ v4l2_dbg(2, debug, &dev->v4l2_dev, "%s: setup %s[%d]\n", __func__,
+ node->name, node->id);
+
+ vchiq_mmal_port_parameter_set(dev->mmal_instance, node->port,
+ MMAL_PARAMETER_ZERO_COPY, &enable,
+ sizeof(enable));
+ setup_mmal_port_format(node, node->port);
+ ret = vchiq_mmal_port_set_format(dev->mmal_instance, node->port);
+ if (ret < 0) {
+ v4l2_dbg(1, debug, &dev->v4l2_dev,
+ "%s: vchiq_mmal_port_set_format failed\n",
+ __func__);
+ return ret;
+ }
+
+ if (node->q_data.sizeimage < node->port->minimum_buffer.size) {
+ v4l2_err(&dev->v4l2_dev,
+ "buffer size mismatch sizeimage %u < min size %u\n",
+ node->q_data.sizeimage,
+ node->port->minimum_buffer.size);
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static int bcm2835_isp_mmal_buf_cleanup(struct mmal_buffer *mmal_buf)
+{
+ mmal_vchi_buffer_cleanup(mmal_buf);
+
+ if (mmal_buf->dma_buf) {
+ dma_buf_put(mmal_buf->dma_buf);
+ mmal_buf->dma_buf = NULL;
+ }
+
+ return 0;
+}
+
+static int bcm2835_isp_node_queue_setup(struct vb2_queue *q,
+ unsigned int *nbuffers,
+ unsigned int *nplanes,
+ unsigned int sizes[],
+ struct device *alloc_devs[])
+{
+ struct bcm2835_isp_node *node = vb2_get_drv_priv(q);
+ unsigned int size;
+
+ if (setup_mmal_port(node))
+ return -EINVAL;
+
+ size = node->q_data.sizeimage;
+ if (size == 0) {
+ v4l2_info(&node_get_dev(node)->v4l2_dev,
+ "%s: Image size unset in queue_setup for node %s[%d]\n",
+ __func__, node->name, node->id);
+ return -EINVAL;
+ }
+
+ if (*nplanes)
+ return sizes[0] < size ? -EINVAL : 0;
+
+ *nplanes = 1;
+ sizes[0] = size;
+
+ node->port->current_buffer.size = size;
+
+ if (*nbuffers < node->port->minimum_buffer.num)
+ *nbuffers = node->port->minimum_buffer.num;
+
+ node->port->current_buffer.num = *nbuffers;
+
+ v4l2_dbg(2, debug, &node_get_dev(node)->v4l2_dev,
+ "%s: Image size %u, nbuffers %u for node %s[%d]\n",
+ __func__, sizes[0], *nbuffers, node->name, node->id);
+ return 0;
+}
+
+static int bcm2835_isp_buf_init(struct vb2_buffer *vb)
+{
+ struct bcm2835_isp_node *node = vb2_get_drv_priv(vb->vb2_queue);
+ struct bcm2835_isp_dev *dev = node_get_dev(node);
+ struct vb2_v4l2_buffer *vb2 = to_vb2_v4l2_buffer(vb);
+ struct bcm2835_isp_buffer *buf =
+ container_of(vb2, struct bcm2835_isp_buffer, vb);
+
+ v4l2_dbg(3, debug, &dev->v4l2_dev, "%s: vb %p\n", __func__, vb);
+
+ buf->mmal.buffer = vb2_plane_vaddr(&buf->vb.vb2_buf, 0);
+ buf->mmal.buffer_size = vb2_plane_size(&buf->vb.vb2_buf, 0);
+ mmal_vchi_buffer_init(dev->mmal_instance, &buf->mmal);
+ return 0;
+}
+
+static int bcm2835_isp_buf_prepare(struct vb2_buffer *vb)
+{
+ struct bcm2835_isp_node *node = vb2_get_drv_priv(vb->vb2_queue);
+ struct bcm2835_isp_dev *dev = node_get_dev(node);
+ struct vb2_v4l2_buffer *vb2 = to_vb2_v4l2_buffer(vb);
+ struct bcm2835_isp_buffer *buf =
+ container_of(vb2, struct bcm2835_isp_buffer, vb);
+ struct dma_buf *dma_buf;
+ int ret;
+
+ v4l2_dbg(3, debug, &dev->v4l2_dev, "%s: type: %d ptr %p\n",
+ __func__, vb->vb2_queue->type, vb);
+
+ if (V4L2_TYPE_IS_OUTPUT(vb->vb2_queue->type)) {
+ if (vb2->field == V4L2_FIELD_ANY)
+ vb2->field = V4L2_FIELD_NONE;
+ if (vb2->field != V4L2_FIELD_NONE) {
+ v4l2_err(&dev->v4l2_dev,
+ "%s field isn't supported\n", __func__);
+ return -EINVAL;
+ }
+ }
+
+ if (vb2_plane_size(vb, 0) < node->q_data.sizeimage) {
+ v4l2_err(&dev->v4l2_dev,
+ "%s data will not fit into plane (%lu < %lu)\n",
+ __func__, vb2_plane_size(vb, 0),
+ (long)node->q_data.sizeimage);
+ return -EINVAL;
+ }
+
+ if (!V4L2_TYPE_IS_OUTPUT(vb->vb2_queue->type))
+ vb2_set_plane_payload(vb, 0, node->q_data.sizeimage);
+
+ switch (vb->memory) {
+ case VB2_MEMORY_DMABUF:
+ dma_buf = dma_buf_get(vb->planes[0].m.fd);
+
+ if (dma_buf != buf->mmal.dma_buf) {
+ /*
+ * dmabuf either hasn't already been mapped, or it has
+ * changed.
+ */
+ if (buf->mmal.dma_buf) {
+ v4l2_err(&dev->v4l2_dev,
+ "%s Buffer changed - why did the core not call cleanup?\n",
+ __func__);
+ bcm2835_isp_mmal_buf_cleanup(&buf->mmal);
+ }
+
+ buf->mmal.dma_buf = dma_buf;
+ } else {
+ /*
+ * Already have a reference to the buffer, so release it
+ * here.
+ */
+ dma_buf_put(dma_buf);
+ }
+ ret = 0;
+ break;
+ case VB2_MEMORY_MMAP:
+ /*
+ * We want to do this at init, but vb2_core_expbuf checks that
+ * the index < q->num_buffers, and q->num_buffers only gets
+ * updated once all the buffers are allocated.
+ */
+ if (!buf->mmal.dma_buf) {
+ ret = vb2_core_expbuf_dmabuf(vb->vb2_queue,
+ vb->vb2_queue->type,
+ vb, 0, O_CLOEXEC,
+ &buf->mmal.dma_buf);
+ v4l2_dbg(3, debug, &dev->v4l2_dev,
+ "%s: exporting ptr %p to dmabuf %p\n",
+ __func__, vb, buf->mmal.dma_buf);
+ if (ret)
+ v4l2_err(&dev->v4l2_dev,
+ "%s: Failed to expbuf idx %d, ret %d\n",
+ __func__, vb->index, ret);
+ } else {
+ ret = 0;
+ }
+ break;
+ default:
+ ret = -EINVAL;
+ break;
+ }
+
+ return ret;
+}
+
+static void bcm2835_isp_node_buffer_queue(struct vb2_buffer *buf)
+{
+ struct bcm2835_isp_node *node = vb2_get_drv_priv(buf->vb2_queue);
+ struct vb2_v4l2_buffer *vbuf =
+ container_of(buf, struct vb2_v4l2_buffer, vb2_buf);
+ struct bcm2835_isp_buffer *buffer =
+ container_of(vbuf, struct bcm2835_isp_buffer, vb);
+ struct bcm2835_isp_dev *dev = node_get_dev(node);
+
+ v4l2_dbg(3, debug, &dev->v4l2_dev, "%s: node %s[%d], buffer %p\n",
+ __func__, node->name, node->id, buffer);
+
+ vb2_to_mmal_buffer(&buffer->mmal, &buffer->vb);
+ v4l2_dbg(3, debug, &dev->v4l2_dev,
+ "%s: node %s[%d] - submitting mmal dmabuf %p\n", __func__,
+ node->name, node->id, buffer->mmal.dma_buf);
+ vchiq_mmal_submit_buffer(dev->mmal_instance, node->port, &buffer->mmal);
+}
+
+static void bcm2835_isp_buffer_cleanup(struct vb2_buffer *vb)
+{
+ struct vb2_v4l2_buffer *vb2 = to_vb2_v4l2_buffer(vb);
+ struct bcm2835_isp_buffer *buffer =
+ container_of(vb2, struct bcm2835_isp_buffer, vb);
+
+ bcm2835_isp_mmal_buf_cleanup(&buffer->mmal);
+}
+
+static int bcm2835_isp_node_start_streaming(struct vb2_queue *q,
+ unsigned int count)
+{
+ struct bcm2835_isp_node *node = vb2_get_drv_priv(q);
+ struct bcm2835_isp_dev *dev = node_get_dev(node);
+ int ret;
+
+ v4l2_dbg(1, debug, &dev->v4l2_dev, "%s: node %s[%d] (count %u)\n",
+ __func__, node->name, node->id, count);
+
+ ret = vchiq_mmal_component_enable(dev->mmal_instance, dev->component);
+ if (ret) {
+ v4l2_err(&dev->v4l2_dev, "%s: Failed enabling component, ret %d\n",
+ __func__, ret);
+ return -EIO;
+ }
+
+ node->sequence = 0;
+ node->port->cb_ctx = node;
+ ret = vchiq_mmal_port_enable(dev->mmal_instance, node->port,
+ mmal_buffer_cb);
+ if (!ret)
+ atomic_inc(&dev->num_streaming);
+ else
+ v4l2_err(&dev->v4l2_dev,
+ "%s: Failed enabling port, ret %d\n", __func__, ret);
+
+ return ret;
+}
+
+static void bcm2835_isp_node_stop_streaming(struct vb2_queue *q)
+{
+ struct bcm2835_isp_node *node = vb2_get_drv_priv(q);
+ struct bcm2835_isp_dev *dev = node_get_dev(node);
+ int ret;
+
+ v4l2_dbg(1, debug, &dev->v4l2_dev, "%s: node %s[%d], mmal port %p\n",
+ __func__, node->name, node->id, node->port);
+
+ init_completion(&dev->frame_cmplt);
+
+ /* Disable MMAL port - this will flush buffers back */
+ ret = vchiq_mmal_port_disable(dev->mmal_instance, node->port);
+ if (ret)
+ v4l2_err(&dev->v4l2_dev,
+ "%s: Failed disabling %s port, ret %d\n", __func__,
+ node_is_output(node) ? "i/p" : "o/p",
+ ret);
+
+ while (atomic_read(&node->port->buffers_with_vpu)) {
+ v4l2_dbg(1, debug, &dev->v4l2_dev,
+ "%s: Waiting for buffers to be returned - %d outstanding\n",
+ __func__, atomic_read(&node->port->buffers_with_vpu));
+ ret = wait_for_completion_timeout(&dev->frame_cmplt,
+ COMPLETE_TIMEOUT);
+ if (ret <= 0) {
+ v4l2_err(&dev->v4l2_dev,
+ "%s: Timeout waiting for buffers to be returned - %d outstanding\n",
+ __func__,
+ atomic_read(&node->port->buffers_with_vpu));
+ break;
+ }
+ }
+
+ atomic_dec(&dev->num_streaming);
+ /* If all ports disabled, then disable the component */
+ if (atomic_read(&dev->num_streaming) == 0) {
+ /*
+ * The ISP component on the firmware has a reference to the
+ * dmabuf handle for the lens shading table. Pass a null handle
+ * to remove that reference now.
+ */
+ memset(&dev->ls, 0, sizeof(dev->ls));
+ /* Must set a valid grid size for the FW */
+ dev->ls.grid_cell_size = 16;
+ set_isp_param(&dev->node[0],
+ MMAL_PARAMETER_LENS_SHADING_OVERRIDE,
+ &dev->ls, sizeof(dev->ls));
+ dev->last_ls_dmabuf = NULL;
+
+ ret = vchiq_mmal_component_disable(dev->mmal_instance,
+ dev->component);
+ if (ret) {
+ v4l2_err(&dev->v4l2_dev,
+ "%s: Failed disabling component, ret %d\n",
+ __func__, ret);
+ }
+ }
+
+ /*
+ * Simply wait for any vb2 buffers to finish. We could take steps to
+ * make them complete more quickly if we care, or even return them
+ * ourselves.
+ */
+ vb2_wait_for_all_buffers(&node->queue);
+}
+
+static const struct vb2_ops bcm2835_isp_node_queue_ops = {
+ .queue_setup = bcm2835_isp_node_queue_setup,
+ .buf_init = bcm2835_isp_buf_init,
+ .buf_prepare = bcm2835_isp_buf_prepare,
+ .buf_queue = bcm2835_isp_node_buffer_queue,
+ .buf_cleanup = bcm2835_isp_buffer_cleanup,
+ .start_streaming = bcm2835_isp_node_start_streaming,
+ .stop_streaming = bcm2835_isp_node_stop_streaming,
+};
+
+static const
+struct bcm2835_isp_fmt *get_default_format(struct bcm2835_isp_node *node)
+{
+ return node->supported_fmts[0];
+}
+
+static inline unsigned int get_bytesperline(int width,
+ const struct bcm2835_isp_fmt *fmt)
+{
+ /* GPU aligns 24bpp images to a multiple of 32 pixels (not bytes). */
+ if (fmt->depth == 24)
+ return ALIGN(width, 32) * 3;
+ else
+ return ALIGN((width * fmt->depth) >> 3, fmt->bytesperline_align);
+}
+
+static inline unsigned int get_sizeimage(int bpl, int width, int height,
+ const struct bcm2835_isp_fmt *fmt)
+{
+ return (bpl * height * fmt->size_multiplier_x2) >> 1;
+}
+
+static int map_ls_table(struct bcm2835_isp_dev *dev, struct dma_buf *dmabuf,
+ const struct bcm2835_isp_lens_shading *v4l2_ls)
+{
+ void *vcsm_handle;
+ int ret;
+
+ if (IS_ERR_OR_NULL(dmabuf))
+ return -EINVAL;
+
+ /*
+ * struct bcm2835_isp_lens_shading and struct
+ * mmal_parameter_lens_shading_v2 match so that we can do a
+ * simple memcpy here.
+ * Only the dmabuf to the actual table needs any manipulation.
+ */
+ memcpy(&dev->ls, v4l2_ls, sizeof(dev->ls));
+ ret = vc_sm_cma_import_dmabuf(dmabuf, &vcsm_handle);
+ if (ret) {
+ dma_buf_put(dmabuf);
+ return ret;
+ }
+
+ dev->ls.mem_handle_table = vc_sm_cma_int_handle(vcsm_handle);
+ dev->last_ls_dmabuf = dmabuf;
+
+ vc_sm_cma_free(vcsm_handle);
+
+ return 0;
+}
+
+static int bcm2835_isp_s_ctrl(struct v4l2_ctrl *ctrl)
+{
+ struct bcm2835_isp_dev *dev =
+ container_of(ctrl->handler, struct bcm2835_isp_dev, ctrl_handler);
+ struct bcm2835_isp_node *node = &dev->node[0];
+ int ret = 0;
+
+ /*
+ * The ISP firmware driver will ensure these settings are applied on
+ * a frame boundary, so we are safe to write them as they come in.
+ *
+ * Note that the bcm2835_isp_* param structures are identical to the
+ * mmal-parameters.h definitions. This avoids the need for unnecessary
+ * field-by-field copying between structures.
+ */
+ switch (ctrl->id) {
+ case V4L2_CID_RED_BALANCE:
+ dev->r_gain = ctrl->val;
+ ret = set_wb_gains(node);
+ break;
+ case V4L2_CID_BLUE_BALANCE:
+ dev->b_gain = ctrl->val;
+ ret = set_wb_gains(node);
+ break;
+ case V4L2_CID_DIGITAL_GAIN:
+ ret = set_digital_gain(node, ctrl->val);
+ break;
+ case V4L2_CID_USER_BCM2835_ISP_CC_MATRIX:
+ ret = set_isp_param(node, MMAL_PARAMETER_CUSTOM_CCM,
+ ctrl->p_new.p_u8,
+ sizeof(struct bcm2835_isp_custom_ccm));
+ break;
+ case V4L2_CID_USER_BCM2835_ISP_LENS_SHADING:
+ {
+ struct bcm2835_isp_lens_shading *v4l2_ls;
+
+ v4l2_ls = (struct bcm2835_isp_lens_shading *)ctrl->p_new.p_u8;
+ struct dma_buf *dmabuf = dma_buf_get(v4l2_ls->dmabuf);
+
+ if (dmabuf != dev->last_ls_dmabuf)
+ ret = map_ls_table(dev, dmabuf, v4l2_ls);
+
+ if (!ret && dev->ls.mem_handle_table)
+ /*
+ * The VPU will take a reference on the vcsm handle,
+ * which in turn will retain a reference on the dmabuf.
+ * This code can therefore safely release all
+ * references to the buffer.
+ */
+ ret =
+ set_isp_param(node,
+ MMAL_PARAMETER_LENS_SHADING_OVERRIDE,
+ &dev->ls, sizeof(dev->ls));
+ else
+ ret = -EINVAL;
+
+ dma_buf_put(dmabuf);
+ break;
+ }
+ case V4L2_CID_USER_BCM2835_ISP_BLACK_LEVEL:
+ ret = set_isp_param(node, MMAL_PARAMETER_BLACK_LEVEL,
+ ctrl->p_new.p_u8,
+ sizeof(struct bcm2835_isp_black_level));
+ break;
+ case V4L2_CID_USER_BCM2835_ISP_GEQ:
+ ret = set_isp_param(node, MMAL_PARAMETER_GEQ,
+ ctrl->p_new.p_u8,
+ sizeof(struct bcm2835_isp_geq));
+ break;
+ case V4L2_CID_USER_BCM2835_ISP_GAMMA:
+ ret = set_isp_param(node, MMAL_PARAMETER_GAMMA,
+ ctrl->p_new.p_u8,
+ sizeof(struct bcm2835_isp_gamma));
+ break;
+ case V4L2_CID_USER_BCM2835_ISP_DENOISE:
+ ret = set_isp_param(node, MMAL_PARAMETER_DENOISE,
+ ctrl->p_new.p_u8,
+ sizeof(struct bcm2835_isp_denoise));
+ break;
+ case V4L2_CID_USER_BCM2835_ISP_CDN:
+ ret = set_isp_param(node, MMAL_PARAMETER_CDN,
+ ctrl->p_new.p_u8,
+ sizeof(struct bcm2835_isp_cdn));
+ break;
+ case V4L2_CID_USER_BCM2835_ISP_SHARPEN:
+ ret = set_isp_param(node, MMAL_PARAMETER_SHARPEN,
+ ctrl->p_new.p_u8,
+ sizeof(struct bcm2835_isp_sharpen));
+ break;
+ case V4L2_CID_USER_BCM2835_ISP_DPC:
+ ret = set_isp_param(node, MMAL_PARAMETER_DPC,
+ ctrl->p_new.p_u8,
+ sizeof(struct bcm2835_isp_dpc));
+ break;
+ default:
+ v4l2_info(&dev->v4l2_dev, "Unrecognised control\n");
+ ret = -EINVAL;
+ }
+
+ if (ret) {
+ v4l2_err(&dev->v4l2_dev, "%s: Failed setting ctrl \"%s\" (%08x), err %d\n",
+ __func__, ctrl->name, ctrl->id, ret);
+ ret = -EIO;
+ }
+
+ return ret;
+}
+
+static const struct v4l2_ctrl_ops bcm2835_isp_ctrl_ops = {
+ .s_ctrl = bcm2835_isp_s_ctrl,
+};
+
+static const struct v4l2_file_operations bcm2835_isp_fops = {
+ .owner = THIS_MODULE,
+ .open = v4l2_fh_open,
+ .release = vb2_fop_release,
+ .poll = vb2_fop_poll,
+ .unlocked_ioctl = video_ioctl2,
+ .mmap = vb2_fop_mmap
+};
+
+static int populate_qdata_fmt(struct v4l2_format *f,
+ struct bcm2835_isp_node *node)
+{
+ struct bcm2835_isp_dev *dev = node_get_dev(node);
+ struct bcm2835_isp_q_data *q_data = &node->q_data;
+ int ret;
+
+ if (!node_is_stats(node)) {
+ v4l2_dbg(1, debug, &dev->v4l2_dev,
+ "%s: Setting pix format for type %d, wxh: %ux%u, fmt: %08x, size %u\n",
+ __func__, f->type, f->fmt.pix.width, f->fmt.pix.height,
+ f->fmt.pix.pixelformat, f->fmt.pix.sizeimage);
+
+ q_data->fmt = find_format(f, node);
+ q_data->width = f->fmt.pix.width;
+ q_data->height = f->fmt.pix.height;
+ q_data->height = f->fmt.pix.height;
+
+ /* All parameters should have been set correctly by try_fmt */
+ q_data->bytesperline = f->fmt.pix.bytesperline;
+ q_data->sizeimage = f->fmt.pix.sizeimage;
+
+ /* We must indicate which of the allowed colour spaces we have. */
+ q_data->colorspace = f->fmt.pix.colorspace;
+ } else {
+ v4l2_dbg(1, debug, &dev->v4l2_dev,
+ "%s: Setting meta format for fmt: %08x, size %u\n",
+ __func__, f->fmt.meta.dataformat,
+ f->fmt.meta.buffersize);
+
+ q_data->fmt = find_format(f, node);
+ q_data->width = 0;
+ q_data->height = 0;
+ q_data->bytesperline = 0;
+ q_data->sizeimage = f->fmt.meta.buffersize;
+
+ /* This won't mean anything for metadata, but may as well fill it in. */
+ q_data->colorspace = V4L2_COLORSPACE_DEFAULT;
+ }
+
+ v4l2_dbg(1, debug, &dev->v4l2_dev,
+ "%s: Calculated bpl as %u, size %u\n", __func__,
+ q_data->bytesperline, q_data->sizeimage);
+
+ setup_mmal_port_format(node, node->port);
+ ret = vchiq_mmal_port_set_format(dev->mmal_instance, node->port);
+ if (ret) {
+ v4l2_err(&dev->v4l2_dev,
+ "%s: Failed vchiq_mmal_port_set_format on port, ret %d\n",
+ __func__, ret);
+ ret = -EINVAL;
+ }
+
+ if (q_data->sizeimage < node->port->minimum_buffer.size) {
+ v4l2_err(&dev->v4l2_dev,
+ "%s: Current buffer size of %u < min buf size %u - driver mismatch to MMAL\n",
+ __func__,
+ q_data->sizeimage,
+ node->port->minimum_buffer.size);
+ }
+
+ v4l2_dbg(1, debug, &dev->v4l2_dev,
+ "%s: Set format for type %d, wxh: %dx%d, fmt: %08x, size %u\n",
+ __func__, f->type, q_data->width, q_data->height,
+ q_data->fmt->fourcc, q_data->sizeimage);
+
+ return ret;
+}
+
+static int bcm2835_isp_node_querycap(struct file *file, void *priv,
+ struct v4l2_capability *cap)
+{
+ strscpy(cap->driver, BCM2835_ISP_NAME, sizeof(cap->driver));
+ strscpy(cap->card, BCM2835_ISP_NAME, sizeof(cap->card));
+ snprintf(cap->bus_info, sizeof(cap->bus_info), "platform:%s",
+ BCM2835_ISP_NAME);
+
+ return 0;
+}
+
+static int bcm2835_isp_node_g_fmt(struct file *file, void *priv,
+ struct v4l2_format *f)
+{
+ struct bcm2835_isp_node *node = video_drvdata(file);
+
+ if (f->type != node->queue.type)
+ return -EINVAL;
+
+ if (node_is_stats(node)) {
+ f->fmt.meta.dataformat = V4L2_META_FMT_BCM2835_ISP_STATS;
+ f->fmt.meta.buffersize =
+ node->port->minimum_buffer.size;
+ } else {
+ struct bcm2835_isp_q_data *q_data = &node->q_data;
+
+ f->fmt.pix.width = q_data->width;
+ f->fmt.pix.height = q_data->height;
+ f->fmt.pix.field = V4L2_FIELD_NONE;
+ f->fmt.pix.pixelformat = q_data->fmt->fourcc;
+ f->fmt.pix.bytesperline = q_data->bytesperline;
+ f->fmt.pix.sizeimage = q_data->sizeimage;
+ f->fmt.pix.colorspace = q_data->colorspace;
+ }
+
+ return 0;
+}
+
+static int bcm2835_isp_node_enum_fmt(struct file *file, void *priv,
+ struct v4l2_fmtdesc *f)
+{
+ struct bcm2835_isp_node *node = video_drvdata(file);
+
+ if (f->type != node->queue.type)
+ return -EINVAL;
+
+ if (f->index < node->num_supported_fmts) {
+ /* Format found */
+ f->pixelformat = node->supported_fmts[f->index]->fourcc;
+ f->flags = 0;
+ return 0;
+ }
+
+ return -EINVAL;
+}
+
+static int bcm2835_isp_enum_framesizes(struct file *file, void *priv,
+ struct v4l2_frmsizeenum *fsize)
+{
+ struct bcm2835_isp_node *node = video_drvdata(file);
+ struct bcm2835_isp_dev *dev = node_get_dev(node);
+ const struct bcm2835_isp_fmt *fmt;
+
+ if (node_is_stats(node) || fsize->index)
+ return -EINVAL;
+
+ fmt = find_format_by_fourcc(fsize->pixel_format, node);
+ if (!fmt) {
+ v4l2_err(&dev->v4l2_dev, "Invalid pixel code: %x\n",
+ fsize->pixel_format);
+ return -EINVAL;
+ }
+
+ fsize->type = V4L2_FRMSIZE_TYPE_STEPWISE;
+ fsize->stepwise.min_width = MIN_DIM;
+ fsize->stepwise.max_width = MAX_DIM;
+ fsize->stepwise.step_width = fmt->step_size;
+
+ fsize->stepwise.min_height = MIN_DIM;
+ fsize->stepwise.max_height = MAX_DIM;
+ fsize->stepwise.step_height = fmt->step_size;
+
+ return 0;
+}
+
+static int bcm2835_isp_node_try_fmt(struct file *file, void *priv,
+ struct v4l2_format *f)
+{
+ struct bcm2835_isp_node *node = video_drvdata(file);
+ const struct bcm2835_isp_fmt *fmt;
+
+ if (f->type != node->queue.type)
+ return -EINVAL;
+
+ fmt = find_format(f, node);
+ if (!fmt)
+ fmt = get_default_format(node);
+
+ if (!node_is_stats(node)) {
+ int is_rgb;
+
+ f->fmt.pix.width = max(min(f->fmt.pix.width, MAX_DIM),
+ MIN_DIM);
+ f->fmt.pix.height = max(min(f->fmt.pix.height, MAX_DIM),
+ MIN_DIM);
+
+ f->fmt.pix.pixelformat = fmt->fourcc;
+
+ /*
+ * Fill in the actual colour space when the requested one was
+ * not supported. This also catches the case when the "default"
+ * colour space was requested (as that's never in the mask).
+ */
+ if (!(V4L2_COLORSPACE_MASK(f->fmt.pix.colorspace) & fmt->colorspace_mask))
+ f->fmt.pix.colorspace = fmt->colorspace_default;
+ /* In all cases, we only support the defaults for these: */
+ f->fmt.pix.ycbcr_enc = V4L2_MAP_YCBCR_ENC_DEFAULT(f->fmt.pix.colorspace);
+ f->fmt.pix.xfer_func = V4L2_MAP_XFER_FUNC_DEFAULT(f->fmt.pix.colorspace);
+ /* RAW counts as sRGB here so that we get full range. */
+ is_rgb = f->fmt.pix.colorspace == V4L2_COLORSPACE_SRGB ||
+ f->fmt.pix.colorspace == V4L2_COLORSPACE_RAW;
+ f->fmt.pix.quantization = V4L2_MAP_QUANTIZATION_DEFAULT(is_rgb,
+ f->fmt.pix.colorspace,
+ f->fmt.pix.ycbcr_enc);
+
+ /* Respect any stride value (suitably aligned) that was requested. */
+ f->fmt.pix.bytesperline = max(get_bytesperline(f->fmt.pix.width, fmt),
+ ALIGN(f->fmt.pix.bytesperline,
+ fmt->bytesperline_align));
+ f->fmt.pix.field = V4L2_FIELD_NONE;
+ f->fmt.pix.sizeimage =
+ get_sizeimage(f->fmt.pix.bytesperline, f->fmt.pix.width,
+ f->fmt.pix.height, fmt);
+ } else {
+ f->fmt.meta.dataformat = fmt->fourcc;
+ f->fmt.meta.buffersize = node->port->minimum_buffer.size;
+ }
+
+ return 0;
+}
+
+static int bcm2835_isp_node_s_fmt(struct file *file, void *priv,
+ struct v4l2_format *f)
+{
+ struct bcm2835_isp_node *node = video_drvdata(file);
+ int ret;
+
+ if (f->type != node->queue.type)
+ return -EINVAL;
+
+ ret = bcm2835_isp_node_try_fmt(file, priv, f);
+ if (ret)
+ return ret;
+
+ v4l2_dbg(1, debug, &node_get_dev(node)->v4l2_dev,
+ "%s: Set format for node %s[%d]\n",
+ __func__, node->name, node->id);
+
+ return populate_qdata_fmt(f, node);
+}
+
+static int bcm2835_isp_node_s_selection(struct file *file, void *fh,
+ struct v4l2_selection *s)
+{
+ struct mmal_parameter_crop crop;
+ struct bcm2835_isp_node *node = video_drvdata(file);
+ struct bcm2835_isp_dev *dev = node_get_dev(node);
+
+ /* This return value is required fro V4L2 compliance. */
+ if (node_is_stats(node))
+ return -ENOTTY;
+
+ if (!s->r.width || !s->r.height)
+ return -EINVAL;
+
+ /* We can only set crop on the input. */
+ switch (s->target) {
+ case V4L2_SEL_TGT_CROP:
+ /*
+ * Adjust the crop window if it goes outside of the frame
+ * dimensions.
+ */
+ s->r.left = min((unsigned int)max(s->r.left, 0),
+ node->q_data.width - MIN_DIM);
+ s->r.top = min((unsigned int)max(s->r.top, 0),
+ node->q_data.height - MIN_DIM);
+ s->r.width = max(min(s->r.width,
+ node->q_data.width - s->r.left), MIN_DIM);
+ s->r.height = max(min(s->r.height,
+ node->q_data.height - s->r.top), MIN_DIM);
+ break;
+ case V4L2_SEL_TGT_CROP_DEFAULT:
+ /* Default (i.e. no) crop window. */
+ s->r.left = 0;
+ s->r.top = 0;
+ s->r.width = node->q_data.width;
+ s->r.height = node->q_data.height;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ crop.rect.x = s->r.left;
+ crop.rect.y = s->r.top;
+ crop.rect.width = s->r.width;
+ crop.rect.height = s->r.height;
+
+ return vchiq_mmal_port_parameter_set(dev->mmal_instance, node->port,
+ MMAL_PARAMETER_CROP,
+ &crop, sizeof(crop));
+}
+
+static int bcm2835_isp_node_g_selection(struct file *file, void *fh,
+ struct v4l2_selection *s)
+{
+ struct mmal_parameter_crop crop;
+ struct bcm2835_isp_node *node = video_drvdata(file);
+ struct bcm2835_isp_dev *dev = node_get_dev(node);
+ u32 crop_size = sizeof(crop);
+ int ret;
+
+ /* We can only return out an input crop. */
+ switch (s->target) {
+ case V4L2_SEL_TGT_CROP:
+ ret = vchiq_mmal_port_parameter_get(dev->mmal_instance,
+ node->port,
+ MMAL_PARAMETER_CROP,
+ &crop, &crop_size);
+ if (!ret) {
+ s->r.left = crop.rect.x;
+ s->r.top = crop.rect.y;
+ s->r.width = crop.rect.width;
+ s->r.height = crop.rect.height;
+ }
+ break;
+ case V4L2_SEL_TGT_CROP_DEFAULT:
+ case V4L2_SEL_TGT_CROP_BOUNDS:
+ /* Default (i.e. no) crop window. */
+ s->r.left = 0;
+ s->r.top = 0;
+ s->r.width = node->q_data.width;
+ s->r.height = node->q_data.height;
+ ret = 0;
+ break;
+ default:
+ ret = -EINVAL;
+ }
+
+ return ret;
+}
+
+static int bcm3285_isp_subscribe_event(struct v4l2_fh *fh,
+ const struct v4l2_event_subscription *s)
+{
+ switch (s->type) {
+ /* Cannot change source parameters dynamically at runtime. */
+ case V4L2_EVENT_SOURCE_CHANGE:
+ return -EINVAL;
+ case V4L2_EVENT_CTRL:
+ return v4l2_ctrl_subscribe_event(fh, s);
+ default:
+ return v4l2_event_subscribe(fh, s, 4, NULL);
+ }
+}
+
+static const struct v4l2_ioctl_ops bcm2835_isp_node_ioctl_ops = {
+ .vidioc_querycap = bcm2835_isp_node_querycap,
+ .vidioc_g_fmt_vid_cap = bcm2835_isp_node_g_fmt,
+ .vidioc_g_fmt_vid_out = bcm2835_isp_node_g_fmt,
+ .vidioc_g_fmt_meta_cap = bcm2835_isp_node_g_fmt,
+ .vidioc_s_fmt_vid_cap = bcm2835_isp_node_s_fmt,
+ .vidioc_s_fmt_vid_out = bcm2835_isp_node_s_fmt,
+ .vidioc_s_fmt_meta_cap = bcm2835_isp_node_s_fmt,
+ .vidioc_try_fmt_vid_cap = bcm2835_isp_node_try_fmt,
+ .vidioc_try_fmt_vid_out = bcm2835_isp_node_try_fmt,
+ .vidioc_try_fmt_meta_cap = bcm2835_isp_node_try_fmt,
+ .vidioc_s_selection = bcm2835_isp_node_s_selection,
+ .vidioc_g_selection = bcm2835_isp_node_g_selection,
+
+ .vidioc_enum_fmt_vid_cap = bcm2835_isp_node_enum_fmt,
+ .vidioc_enum_fmt_vid_out = bcm2835_isp_node_enum_fmt,
+ .vidioc_enum_fmt_meta_cap = bcm2835_isp_node_enum_fmt,
+ .vidioc_enum_framesizes = bcm2835_isp_enum_framesizes,
+
+ .vidioc_reqbufs = vb2_ioctl_reqbufs,
+ .vidioc_querybuf = vb2_ioctl_querybuf,
+ .vidioc_qbuf = vb2_ioctl_qbuf,
+ .vidioc_dqbuf = vb2_ioctl_dqbuf,
+ .vidioc_expbuf = vb2_ioctl_expbuf,
+ .vidioc_create_bufs = vb2_ioctl_create_bufs,
+ .vidioc_prepare_buf = vb2_ioctl_prepare_buf,
+
+ .vidioc_streamon = vb2_ioctl_streamon,
+ .vidioc_streamoff = vb2_ioctl_streamoff,
+
+ .vidioc_subscribe_event = bcm3285_isp_subscribe_event,
+ .vidioc_unsubscribe_event = v4l2_event_unsubscribe,
+};
+
+/*
+ * Size of the array to provide to the VPU when asking for the list of supported
+ * formats.
+ *
+ * The ISP component currently advertises 62 input formats, so add a small
+ * overhead on that. Should the component advertise more formats then the excess
+ * will be dropped and a warning logged.
+ */
+#define MAX_SUPPORTED_ENCODINGS 70
+
+/* Populate node->supported_fmts with the formats supported by those ports. */
+static int bcm2835_isp_get_supported_fmts(struct bcm2835_isp_node *node)
+{
+ struct bcm2835_isp_dev *dev = node_get_dev(node);
+ struct bcm2835_isp_fmt const **list;
+ unsigned int i, j, num_encodings;
+ u32 fourccs[MAX_SUPPORTED_ENCODINGS];
+ u32 param_size = sizeof(fourccs);
+ int ret;
+
+ ret = vchiq_mmal_port_parameter_get(dev->mmal_instance, node->port,
+ MMAL_PARAMETER_SUPPORTED_ENCODINGS,
+ &fourccs, ¶m_size);
+
+ if (ret) {
+ if (ret == MMAL_MSG_STATUS_ENOSPC) {
+ v4l2_err(&dev->v4l2_dev,
+ "%s: port has more encodings than we provided space for. Some are dropped (%zu vs %u).\n",
+ __func__, param_size / sizeof(u32),
+ MAX_SUPPORTED_ENCODINGS);
+ num_encodings = MAX_SUPPORTED_ENCODINGS;
+ } else {
+ v4l2_err(&dev->v4l2_dev, "%s: get_param ret %u.\n",
+ __func__, ret);
+ return -EINVAL;
+ }
+ } else {
+ num_encodings = param_size / sizeof(u32);
+ }
+
+ /*
+ * Assume at this stage that all encodings will be supported in V4L2.
+ * Any that aren't supported will waste a very small amount of memory.
+ */
+ list = devm_kzalloc(dev->dev,
+ sizeof(struct bcm2835_isp_fmt *) * num_encodings,
+ GFP_KERNEL);
+ if (!list)
+ return -ENOMEM;
+ node->supported_fmts = list;
+
+ for (i = 0, j = 0; i < num_encodings; i++) {
+ const struct bcm2835_isp_fmt *fmt = get_fmt(fourccs[i]);
+
+ if (fmt) {
+ list[j] = fmt;
+ j++;
+ }
+ }
+ node->num_supported_fmts = j;
+
+ return 0;
+}
+
+/*
+ * Register a device node /dev/video<N> to go along with one of the ISP's input
+ * or output nodes.
+ */
+static int bcm2835_isp_register_node(struct bcm2835_isp_dev *dev,
+ unsigned int instance,
+ struct bcm2835_isp_node *node, int index)
+{
+ struct video_device *vfd;
+ struct vb2_queue *queue;
+ int ret;
+
+ mutex_init(&node->lock);
+ mutex_init(&node->queue_lock);
+
+ node->dev = dev;
+ vfd = &node->vfd;
+ queue = &node->queue;
+ queue->type = index_to_queue_type(index);
+ /*
+ * Setup the node type-specific params.
+ *
+ * Only the OUTPUT node can set controls and crop windows. However,
+ * we must allow the s/g_selection ioctl on the stats node as v4l2
+ * compliance expects it to return a -ENOTTY, and the framework
+ * does not handle it if the ioctl is disabled.
+ */
+ switch (queue->type) {
+ case V4L2_BUF_TYPE_VIDEO_OUTPUT:
+ vfd->device_caps = V4L2_CAP_VIDEO_OUTPUT | V4L2_CAP_STREAMING;
+ node->id = index;
+ node->vfl_dir = VFL_DIR_TX;
+ node->name = "output";
+ node->port = &dev->component->input[node->id];
+ break;
+ case V4L2_BUF_TYPE_VIDEO_CAPTURE:
+ vfd->device_caps = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_STREAMING;
+ /* First Capture node starts at id 0, etc. */
+ node->id = index - BCM2835_ISP_NUM_OUTPUTS;
+ node->vfl_dir = VFL_DIR_RX;
+ node->name = "capture";
+ node->port = &dev->component->output[node->id];
+ v4l2_disable_ioctl(&node->vfd, VIDIOC_S_CTRL);
+ v4l2_disable_ioctl(&node->vfd, VIDIOC_S_SELECTION);
+ v4l2_disable_ioctl(&node->vfd, VIDIOC_G_SELECTION);
+ break;
+ case V4L2_BUF_TYPE_META_CAPTURE:
+ vfd->device_caps = V4L2_CAP_META_CAPTURE | V4L2_CAP_STREAMING;
+ node->id = index - BCM2835_ISP_NUM_OUTPUTS;
+ node->vfl_dir = VFL_DIR_RX;
+ node->name = "stats";
+ node->port = &dev->component->output[node->id];
+ v4l2_disable_ioctl(&node->vfd, VIDIOC_S_CTRL);
+ v4l2_disable_ioctl(&node->vfd, VIDIOC_S_SELECTION);
+ v4l2_disable_ioctl(&node->vfd, VIDIOC_G_SELECTION);
+ break;
+ }
+
+ /* We use the selection API instead of the old crop API. */
+ v4l2_disable_ioctl(vfd, VIDIOC_CROPCAP);
+ v4l2_disable_ioctl(vfd, VIDIOC_G_CROP);
+ v4l2_disable_ioctl(vfd, VIDIOC_S_CROP);
+
+ ret = bcm2835_isp_get_supported_fmts(node);
+ if (ret)
+ return ret;
+
+ /* Initialise the video node. */
+ vfd->vfl_type = VFL_TYPE_VIDEO;
+ vfd->fops = &bcm2835_isp_fops,
+ vfd->ioctl_ops = &bcm2835_isp_node_ioctl_ops,
+ vfd->minor = -1,
+ vfd->release = video_device_release_empty,
+ vfd->queue = &node->queue;
+ vfd->lock = &node->lock;
+ vfd->v4l2_dev = &dev->v4l2_dev;
+ vfd->vfl_dir = node->vfl_dir;
+
+ node->q_data.fmt = get_default_format(node);
+ node->q_data.width = DEFAULT_DIM;
+ node->q_data.height = DEFAULT_DIM;
+ node->q_data.bytesperline =
+ get_bytesperline(DEFAULT_DIM, node->q_data.fmt);
+ node->q_data.sizeimage = node_is_stats(node) ?
+ node->port->recommended_buffer.size :
+ get_sizeimage(node->q_data.bytesperline,
+ node->q_data.width,
+ node->q_data.height,
+ node->q_data.fmt);
+ node->q_data.colorspace = node->q_data.fmt->colorspace_default;
+
+ queue->io_modes = VB2_MMAP | VB2_DMABUF;
+ queue->drv_priv = node;
+ queue->ops = &bcm2835_isp_node_queue_ops;
+ queue->mem_ops = &vb2_dma_contig_memops;
+ queue->buf_struct_size = sizeof(struct bcm2835_isp_buffer);
+ queue->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY;
+ queue->dev = dev->dev;
+ queue->lock = &node->queue_lock;
+
+ ret = vb2_queue_init(queue);
+ if (ret < 0) {
+ v4l2_info(&dev->v4l2_dev, "vb2_queue_init failed\n");
+ return ret;
+ }
+
+ /* Set some controls and defaults, but only on the VIDEO_OUTPUT node. */
+ if (node_is_output(node)) {
+ unsigned int i;
+
+ /* Use this ctrl template to assign custom ISP ctrls. */
+ struct v4l2_ctrl_config ctrl_template = {
+ .ops = &bcm2835_isp_ctrl_ops,
+ .type = V4L2_CTRL_TYPE_U8,
+ .def = 0,
+ .min = 0x00,
+ .max = 0xff,
+ .step = 1,
+ };
+
+ /* 3 standard controls, and an array of custom controls */
+ ret = v4l2_ctrl_handler_init(&dev->ctrl_handler,
+ 3 + ARRAY_SIZE(custom_ctrls));
+ if (ret) {
+ v4l2_err(&dev->v4l2_dev, "ctrl_handler init failed (%d)\n",
+ ret);
+ goto queue_cleanup;
+ }
+
+ dev->r_gain = 1000;
+ dev->b_gain = 1000;
+
+ v4l2_ctrl_new_std(&dev->ctrl_handler, &bcm2835_isp_ctrl_ops,
+ V4L2_CID_RED_BALANCE, 1, 0xffff, 1,
+ dev->r_gain);
+
+ v4l2_ctrl_new_std(&dev->ctrl_handler, &bcm2835_isp_ctrl_ops,
+ V4L2_CID_BLUE_BALANCE, 1, 0xffff, 1,
+ dev->b_gain);
+
+ v4l2_ctrl_new_std(&dev->ctrl_handler, &bcm2835_isp_ctrl_ops,
+ V4L2_CID_DIGITAL_GAIN, 1, 0xffff, 1, 1000);
+
+ for (i = 0; i < ARRAY_SIZE(custom_ctrls); i++) {
+ ctrl_template.name = custom_ctrls[i].name;
+ ctrl_template.id = custom_ctrls[i].id;
+ ctrl_template.dims[0] = custom_ctrls[i].size;
+ ctrl_template.flags = custom_ctrls[i].flags;
+ v4l2_ctrl_new_custom(&dev->ctrl_handler,
+ &ctrl_template, NULL);
+ }
+
+ node->vfd.ctrl_handler = &dev->ctrl_handler;
+ if (dev->ctrl_handler.error) {
+ ret = dev->ctrl_handler.error;
+ v4l2_err(&dev->v4l2_dev, "controls init failed (%d)\n",
+ ret);
+ v4l2_ctrl_handler_free(&dev->ctrl_handler);
+ goto ctrl_cleanup;
+ }
+ }
+
+ /* Define the device names */
+ snprintf(vfd->name, sizeof(node->vfd.name), "%s-%s%d", BCM2835_ISP_NAME,
+ node->name, node->id);
+
+ ret = video_register_device(vfd, VFL_TYPE_VIDEO, video_nr[instance]);
+ if (ret) {
+ v4l2_err(&dev->v4l2_dev,
+ "Failed to register video %s[%d] device node\n",
+ node->name, node->id);
+ goto ctrl_cleanup;
+ }
+
+ node->registered = true;
+ video_set_drvdata(vfd, node);
+
+ v4l2_info(&dev->v4l2_dev,
+ "Device node %s[%d] registered as /dev/video%d\n",
+ node->name, node->id, vfd->num);
+
+ return 0;
+
+ctrl_cleanup:
+ if (node_is_output(node))
+ v4l2_ctrl_handler_free(&dev->ctrl_handler);
+queue_cleanup:
+ vb2_queue_release(&node->queue);
+ return ret;
+}
+
+/* Unregister one of the /dev/video<N> nodes associated with the ISP. */
+static void bcm2835_unregister_node(struct bcm2835_isp_node *node)
+{
+ struct bcm2835_isp_dev *dev = node_get_dev(node);
+
+ v4l2_info(&dev->v4l2_dev,
+ "Unregistering node %s[%d] device node /dev/video%d\n",
+ node->name, node->id, node->vfd.num);
+
+ if (node->registered) {
+ video_unregister_device(&node->vfd);
+ if (node_is_output(node))
+ v4l2_ctrl_handler_free(&dev->ctrl_handler);
+ vb2_queue_release(&node->queue);
+ }
+
+ /*
+ * node->supported_fmts.list is free'd automatically
+ * as a managed resource.
+ */
+ node->supported_fmts = NULL;
+ node->num_supported_fmts = 0;
+ node->vfd.ctrl_handler = NULL;
+ node->registered = false;
+}
+
+static void media_controller_unregister(struct bcm2835_isp_dev *dev)
+{
+ unsigned int i;
+
+ v4l2_info(&dev->v4l2_dev, "Unregister from media controller\n");
+
+ if (dev->media_device_registered) {
+ media_device_unregister(&dev->mdev);
+ media_device_cleanup(&dev->mdev);
+ dev->media_device_registered = false;
+ }
+
+ kfree(dev->entity.name);
+ dev->entity.name = NULL;
+
+ if (dev->media_entity_registered) {
+ media_device_unregister_entity(&dev->entity);
+ dev->media_entity_registered = false;
+ }
+
+ for (i = 0; i < BCM2835_ISP_NUM_NODES; i++) {
+ struct bcm2835_isp_node *node = &dev->node[i];
+
+ if (node->media_node_registered) {
+ media_remove_intf_links(node->intf_link->intf);
+ media_entity_remove_links(&dev->node[i].vfd.entity);
+ media_devnode_remove(node->intf_devnode);
+ media_device_unregister_entity(&node->vfd.entity);
+ kfree(node->vfd.entity.name);
+ }
+ node->media_node_registered = false;
+ }
+
+ dev->v4l2_dev.mdev = NULL;
+}
+
+static int media_controller_register_node(struct bcm2835_isp_dev *dev, int num)
+{
+ struct bcm2835_isp_node *node = &dev->node[num];
+ struct media_entity *entity = &node->vfd.entity;
+ int output = node_is_output(node);
+ char *name;
+ int ret;
+
+ v4l2_info(&dev->v4l2_dev,
+ "Register %s node %d with media controller\n",
+ output ? "output" : "capture", num);
+ entity->obj_type = MEDIA_ENTITY_TYPE_VIDEO_DEVICE;
+ entity->function = MEDIA_ENT_F_IO_V4L;
+ entity->info.dev.major = VIDEO_MAJOR;
+ entity->info.dev.minor = node->vfd.minor;
+ name = kmalloc(BCM2835_ISP_ENTITY_NAME_LEN, GFP_KERNEL);
+ if (!name) {
+ ret = -ENOMEM;
+ goto error_no_mem;
+ }
+ snprintf(name, BCM2835_ISP_ENTITY_NAME_LEN, "%s0-%s%d",
+ BCM2835_ISP_NAME, output ? "output" : "capture", num);
+ entity->name = name;
+ node->pad.flags = output ? MEDIA_PAD_FL_SOURCE : MEDIA_PAD_FL_SINK;
+ ret = media_entity_pads_init(entity, 1, &node->pad);
+ if (ret)
+ goto error_pads_init;
+ ret = media_device_register_entity(&dev->mdev, entity);
+ if (ret)
+ goto error_register_entity;
+
+ node->intf_devnode = media_devnode_create(&dev->mdev,
+ MEDIA_INTF_T_V4L_VIDEO, 0,
+ VIDEO_MAJOR, node->vfd.minor);
+ if (!node->intf_devnode) {
+ ret = -ENOMEM;
+ goto error_devnode_create;
+ }
+
+ node->intf_link = media_create_intf_link(entity,
+ &node->intf_devnode->intf,
+ MEDIA_LNK_FL_IMMUTABLE |
+ MEDIA_LNK_FL_ENABLED);
+ if (!node->intf_link) {
+ ret = -ENOMEM;
+ goto error_create_intf_link;
+ }
+
+ if (output)
+ ret = media_create_pad_link(entity, 0, &dev->entity, num,
+ MEDIA_LNK_FL_IMMUTABLE |
+ MEDIA_LNK_FL_ENABLED);
+ else
+ ret = media_create_pad_link(&dev->entity, num, entity, 0,
+ MEDIA_LNK_FL_IMMUTABLE |
+ MEDIA_LNK_FL_ENABLED);
+ if (ret)
+ goto error_create_pad_link;
+
+ dev->node[num].media_node_registered = true;
+ return 0;
+
+error_create_pad_link:
+ media_remove_intf_links(&node->intf_devnode->intf);
+error_create_intf_link:
+ media_devnode_remove(node->intf_devnode);
+error_devnode_create:
+ media_device_unregister_entity(&node->vfd.entity);
+error_register_entity:
+error_pads_init:
+ kfree(entity->name);
+ entity->name = NULL;
+error_no_mem:
+ if (ret)
+ v4l2_info(&dev->v4l2_dev, "Error registering node\n");
+
+ return ret;
+}
+
+static int media_controller_register(struct bcm2835_isp_dev *dev)
+{
+ char *name;
+ unsigned int i;
+ int ret;
+
+ v4l2_dbg(2, debug, &dev->v4l2_dev, "Registering with media controller\n");
+ dev->mdev.dev = dev->dev;
+ strscpy(dev->mdev.model, "bcm2835-isp",
+ sizeof(dev->mdev.model));
+ strscpy(dev->mdev.bus_info, "platform:bcm2835-isp",
+ sizeof(dev->mdev.bus_info));
+ media_device_init(&dev->mdev);
+ dev->v4l2_dev.mdev = &dev->mdev;
+
+ v4l2_dbg(2, debug, &dev->v4l2_dev, "Register entity for nodes\n");
+
+ name = kmalloc(BCM2835_ISP_ENTITY_NAME_LEN, GFP_KERNEL);
+ if (!name) {
+ ret = -ENOMEM;
+ goto done;
+ }
+ snprintf(name, BCM2835_ISP_ENTITY_NAME_LEN, "bcm2835_isp0");
+ dev->entity.name = name;
+ dev->entity.obj_type = MEDIA_ENTITY_TYPE_BASE;
+ dev->entity.function = MEDIA_ENT_F_PROC_VIDEO_SCALER;
+
+ for (i = 0; i < BCM2835_ISP_NUM_NODES; i++) {
+ dev->pad[i].flags = node_is_output(&dev->node[i]) ?
+ MEDIA_PAD_FL_SINK : MEDIA_PAD_FL_SOURCE;
+ }
+
+ ret = media_entity_pads_init(&dev->entity, BCM2835_ISP_NUM_NODES,
+ dev->pad);
+ if (ret)
+ goto done;
+
+ ret = media_device_register_entity(&dev->mdev, &dev->entity);
+ if (ret)
+ goto done;
+
+ dev->media_entity_registered = true;
+ for (i = 0; i < BCM2835_ISP_NUM_NODES; i++) {
+ ret = media_controller_register_node(dev, i);
+ if (ret)
+ goto done;
+ }
+
+ ret = media_device_register(&dev->mdev);
+ if (!ret)
+ dev->media_device_registered = true;
+done:
+ return ret;
+}
+
+static void bcm2835_isp_remove_instance(struct bcm2835_isp_dev *dev)
+{
+ unsigned int i;
+
+ media_controller_unregister(dev);
+
+ for (i = 0; i < BCM2835_ISP_NUM_NODES; i++)
+ bcm2835_unregister_node(&dev->node[i]);
+
+ v4l2_device_unregister(&dev->v4l2_dev);
+
+ if (dev->component)
+ vchiq_mmal_component_finalise(dev->mmal_instance,
+ dev->component);
+
+ vchiq_mmal_finalise(dev->mmal_instance);
+}
+
+static int bcm2835_isp_probe_instance(struct vchiq_device *device,
+ struct bcm2835_isp_dev **dev_int,
+ unsigned int instance)
+{
+ struct bcm2835_isp_dev *dev;
+ unsigned int i;
+ int ret;
+
+ dev = devm_kzalloc(&device->dev, sizeof(*dev), GFP_KERNEL);
+ if (!dev)
+ return -ENOMEM;
+
+ *dev_int = dev;
+ dev->dev = &device->dev;
+
+ ret = v4l2_device_register(&device->dev, &dev->v4l2_dev);
+ if (ret)
+ return ret;
+
+ ret = vchiq_mmal_init(&device->dev, &dev->mmal_instance);
+ if (ret) {
+ v4l2_device_unregister(&dev->v4l2_dev);
+ return ret;
+ }
+
+ ret = vchiq_mmal_component_init(dev->mmal_instance, "ril.isp",
+ &dev->component);
+ if (ret) {
+ v4l2_err(&dev->v4l2_dev,
+ "%s: failed to create ril.isp component\n", __func__);
+ return ret;
+ }
+
+ if (dev->component->inputs < BCM2835_ISP_NUM_OUTPUTS ||
+ dev->component->outputs < BCM2835_ISP_NUM_CAPTURES +
+ BCM2835_ISP_NUM_METADATA) {
+ v4l2_err(&dev->v4l2_dev,
+ "%s: ril.isp returned %d i/p (%d expected), %d o/p (%d expected) ports\n",
+ __func__, dev->component->inputs,
+ BCM2835_ISP_NUM_OUTPUTS,
+ dev->component->outputs,
+ BCM2835_ISP_NUM_CAPTURES + BCM2835_ISP_NUM_METADATA);
+ return -EINVAL;
+ }
+
+ atomic_set(&dev->num_streaming, 0);
+
+ for (i = 0; i < BCM2835_ISP_NUM_NODES; i++) {
+ struct bcm2835_isp_node *node = &dev->node[i];
+
+ ret = bcm2835_isp_register_node(dev, instance, node, i);
+ if (ret)
+ return ret;
+ }
+
+ ret = media_controller_register(dev);
+ if (ret)
+ return ret;
+
+ return 0;
+}
+
+static void bcm2835_isp_remove(struct vchiq_device *device)
+{
+ struct bcm2835_isp_dev **bcm2835_isp_instances;
+ unsigned int i;
+
+ bcm2835_isp_instances = vchiq_get_drvdata(device);
+ for (i = 0; i < BCM2835_ISP_NUM_INSTANCES; i++) {
+ if (bcm2835_isp_instances[i])
+ bcm2835_isp_remove_instance(bcm2835_isp_instances[i]);
+ }
+}
+
+static int bcm2835_isp_probe(struct vchiq_device *device)
+{
+ struct bcm2835_isp_dev **bcm2835_isp_instances;
+ unsigned int i;
+ int ret;
+
+ ret = dma_set_mask_and_coherent(&device->dev, DMA_BIT_MASK(32));
+ if (ret) {
+ dev_err(&device->dev, "dma_set_mask_and_coherent failed: %d\n",
+ ret);
+ return ret;
+ }
+
+ bcm2835_isp_instances = devm_kzalloc(&device->dev,
+ sizeof(bcm2835_isp_instances) *
+ BCM2835_ISP_NUM_INSTANCES,
+ GFP_KERNEL);
+ if (!bcm2835_isp_instances)
+ return -ENOMEM;
+
+ vchiq_set_drvdata(device, bcm2835_isp_instances);
+
+ for (i = 0; i < BCM2835_ISP_NUM_INSTANCES; i++) {
+ ret = bcm2835_isp_probe_instance(device,
+ &bcm2835_isp_instances[i], i);
+ if (ret)
+ goto error;
+ }
+
+ dev_info(&device->dev, "Loaded V4L2 %s\n", BCM2835_ISP_NAME);
+ return 0;
+
+error:
+ bcm2835_isp_remove(device);
+
+ return ret;
+}
+
+static struct vchiq_device_id device_id_table[] = {
+ { .name = "bcm2835-isp" },
+ {}
+};
+MODULE_DEVICE_TABLE(vchiq, device_id_table);
+
+static struct vchiq_driver bcm2835_isp_drv = {
+ .probe = bcm2835_isp_probe,
+ .remove = bcm2835_isp_remove,
+ .id_table = device_id_table,
+ .driver = {
+ .name = BCM2835_ISP_NAME,
+ },
+};
+
+module_vchiq_driver(bcm2835_isp_drv);
+
+MODULE_DESCRIPTION("BCM2835 ISP driver");
+MODULE_AUTHOR("Naushir Patuck <naush at raspberrypi.com>");
+MODULE_LICENSE("GPL");
diff --git a/include/uapi/linux/bcm2835-isp.h b/include/uapi/linux/bcm2835-isp.h
new file mode 100644
index 0000000000000000000000000000000000000000..c50e3ca81565775fea4156b1120a9bcc8943e916
--- /dev/null
+++ b/include/uapi/linux/bcm2835-isp.h
@@ -0,0 +1,347 @@
+/* SPDX-License-Identifier: ((GPL-2.0+ WITH Linux-syscall-note) OR BSD-3-Clause) */
+/*
+ * bcm2835-isp.h
+ *
+ * BCM2835 ISP driver - user space header file.
+ *
+ * Copyright © 2019-2020 Raspberry Pi (Trading) Ltd.
+ *
+ * Author: Naushir Patuck (naush at raspberrypi.com)
+ *
+ */
+
+#ifndef __BCM2835_ISP_H_
+#define __BCM2835_ISP_H_
+
+#include <linux/v4l2-controls.h>
+
+#define V4L2_CID_USER_BCM2835_ISP_CC_MATRIX \
+ (V4L2_CID_USER_BCM2835_ISP_BASE + 0x0001)
+#define V4L2_CID_USER_BCM2835_ISP_LENS_SHADING \
+ (V4L2_CID_USER_BCM2835_ISP_BASE + 0x0002)
+#define V4L2_CID_USER_BCM2835_ISP_BLACK_LEVEL \
+ (V4L2_CID_USER_BCM2835_ISP_BASE + 0x0003)
+#define V4L2_CID_USER_BCM2835_ISP_GEQ \
+ (V4L2_CID_USER_BCM2835_ISP_BASE + 0x0004)
+#define V4L2_CID_USER_BCM2835_ISP_GAMMA \
+ (V4L2_CID_USER_BCM2835_ISP_BASE + 0x0005)
+#define V4L2_CID_USER_BCM2835_ISP_DENOISE \
+ (V4L2_CID_USER_BCM2835_ISP_BASE + 0x0006)
+#define V4L2_CID_USER_BCM2835_ISP_SHARPEN \
+ (V4L2_CID_USER_BCM2835_ISP_BASE + 0x0007)
+#define V4L2_CID_USER_BCM2835_ISP_DPC \
+ (V4L2_CID_USER_BCM2835_ISP_BASE + 0x0008)
+#define V4L2_CID_USER_BCM2835_ISP_CDN \
+ (V4L2_CID_USER_BCM2835_ISP_BASE + 0x0009)
+
+/*
+ * All structs below are directly mapped onto the equivalent structs in
+ * drivers/staging/vc04_services/vchiq-mmal/mmal-parameters.h
+ * for convenience.
+ */
+
+/**
+ * struct bcm2835_isp_rational - Rational value type.
+ *
+ * @num: Numerator.
+ * @den: Denominator.
+ */
+struct bcm2835_isp_rational {
+ __s32 num;
+ __u32 den;
+};
+
+/**
+ * struct bcm2835_isp_ccm - Colour correction matrix.
+ *
+ * @ccm: 3x3 correction matrix coefficients.
+ * @offsets: 1x3 correction offsets.
+ */
+struct bcm2835_isp_ccm {
+ struct bcm2835_isp_rational ccm[3][3];
+ __s32 offsets[3];
+};
+
+/**
+ * struct bcm2835_isp_custom_ccm - Custom CCM applied with the
+ * V4L2_CID_USER_BCM2835_ISP_CC_MATRIX ctrl.
+ *
+ * @enabled: Enable custom CCM.
+ * @ccm: Custom CCM coefficients and offsets.
+ */
+struct bcm2835_isp_custom_ccm {
+ __u32 enabled;
+ struct bcm2835_isp_ccm ccm;
+};
+
+/**
+ * enum bcm2835_isp_gain_format - format of the gains in the lens shading
+ * tables used with the
+ * V4L2_CID_USER_BCM2835_ISP_LENS_SHADING ctrl.
+ *
+ * @GAIN_FORMAT_U0P8_1: Gains are u0.8 format, starting at 1.0
+ * @GAIN_FORMAT_U1P7_0: Gains are u1.7 format, starting at 0.0
+ * @GAIN_FORMAT_U1P7_1: Gains are u1.7 format, starting at 1.0
+ * @GAIN_FORMAT_U2P6_0: Gains are u2.6 format, starting at 0.0
+ * @GAIN_FORMAT_U2P6_1: Gains are u2.6 format, starting at 1.0
+ * @GAIN_FORMAT_U3P5_0: Gains are u3.5 format, starting at 0.0
+ * @GAIN_FORMAT_U3P5_1: Gains are u3.5 format, starting at 1.0
+ * @GAIN_FORMAT_U4P10: Gains are u4.10 format, starting at 0.0
+ */
+enum bcm2835_isp_gain_format {
+ GAIN_FORMAT_U0P8_1 = 0,
+ GAIN_FORMAT_U1P7_0 = 1,
+ GAIN_FORMAT_U1P7_1 = 2,
+ GAIN_FORMAT_U2P6_0 = 3,
+ GAIN_FORMAT_U2P6_1 = 4,
+ GAIN_FORMAT_U3P5_0 = 5,
+ GAIN_FORMAT_U3P5_1 = 6,
+ GAIN_FORMAT_U4P10 = 7,
+};
+
+/**
+ * struct bcm2835_isp_lens_shading - Lens shading tables supplied with the
+ * V4L2_CID_USER_BCM2835_ISP_LENS_SHADING
+ * ctrl.
+ *
+ * @enabled: Enable lens shading.
+ * @grid_cell_size: Size of grid cells in samples (16, 32, 64, 128 or 256).
+ * @grid_width: Width of lens shading tables in grid cells.
+ * @grid_stride: Row to row distance (in grid cells) between grid cells
+ * in the same horizontal location.
+ * @grid_height: Height of lens shading tables in grid cells.
+ * @dmabuf: dmabuf file handle containing the table.
+ * @ref_transform: Reference transform - unsupported, please pass zero.
+ * @corner_sampled: Whether the gains are sampled at the corner points
+ * of the grid cells or in the cell centres.
+ * @gain_format: Format of the gains (see enum &bcm2835_isp_gain_format).
+ */
+struct bcm2835_isp_lens_shading {
+ __u32 enabled;
+ __u32 grid_cell_size;
+ __u32 grid_width;
+ __u32 grid_stride;
+ __u32 grid_height;
+ __s32 dmabuf;
+ __u32 ref_transform;
+ __u32 corner_sampled;
+ __u32 gain_format;
+};
+
+/**
+ * struct bcm2835_isp_black_level - Sensor black level set with the
+ * V4L2_CID_USER_BCM2835_ISP_BLACK_LEVEL ctrl.
+ *
+ * @enabled: Enable black level.
+ * @black_level_r: Black level for red channel.
+ * @black_level_g: Black level for green channels.
+ * @black_level_b: Black level for blue channel.
+ */
+struct bcm2835_isp_black_level {
+ __u32 enabled;
+ __u16 black_level_r;
+ __u16 black_level_g;
+ __u16 black_level_b;
+ __u8 padding[2]; /* Unused */
+};
+
+/**
+ * struct bcm2835_isp_geq - Green equalisation parameters set with the
+ * V4L2_CID_USER_BCM2835_ISP_GEQ ctrl.
+ *
+ * @enabled: Enable green equalisation.
+ * @offset: Fixed offset of the green equalisation threshold.
+ * @slope: Slope of the green equalisation threshold.
+ */
+struct bcm2835_isp_geq {
+ __u32 enabled;
+ __u32 offset;
+ struct bcm2835_isp_rational slope;
+};
+
+#define BCM2835_NUM_GAMMA_PTS 33
+
+/**
+ * struct bcm2835_isp_gamma - Gamma parameters set with the
+ * V4L2_CID_USER_BCM2835_ISP_GAMMA ctrl.
+ *
+ * @enabled: Enable gamma adjustment.
+ * @X: X values of the points defining the gamma curve.
+ * Values should be scaled to 16 bits.
+ * @Y: Y values of the points defining the gamma curve.
+ * Values should be scaled to 16 bits.
+ */
+struct bcm2835_isp_gamma {
+ __u32 enabled;
+ __u16 x[BCM2835_NUM_GAMMA_PTS];
+ __u16 y[BCM2835_NUM_GAMMA_PTS];
+};
+
+/**
+ * enum bcm2835_isp_cdn_mode - Mode of operation for colour denoise.
+ *
+ * @CDN_MODE_FAST: Fast (but lower quality) colour denoise
+ * algorithm, typically used for video recording.
+ * @CDN_HIGH_QUALITY: High quality (but slower) colour denoise
+ * algorithm, typically used for stills capture.
+ */
+enum bcm2835_isp_cdn_mode {
+ CDN_MODE_FAST = 0,
+ CDN_MODE_HIGH_QUALITY = 1,
+};
+
+/**
+ * struct bcm2835_isp_cdn - Colour denoise parameters set with the
+ * V4L2_CID_USER_BCM2835_ISP_CDN ctrl.
+ *
+ * @enabled: Enable colour denoise.
+ * @mode: Colour denoise operating mode (see enum &bcm2835_isp_cdn_mode)
+ */
+struct bcm2835_isp_cdn {
+ __u32 enabled;
+ __u32 mode;
+};
+
+/**
+ * struct bcm2835_isp_denoise - Denoise parameters set with the
+ * V4L2_CID_USER_BCM2835_ISP_DENOISE ctrl.
+ *
+ * @enabled: Enable denoise.
+ * @constant: Fixed offset of the noise threshold.
+ * @slope: Slope of the noise threshold.
+ * @strength: Denoise strength between 0.0 (off) and 1.0 (maximum).
+ */
+struct bcm2835_isp_denoise {
+ __u32 enabled;
+ __u32 constant;
+ struct bcm2835_isp_rational slope;
+ struct bcm2835_isp_rational strength;
+};
+
+/**
+ * struct bcm2835_isp_sharpen - Sharpen parameters set with the
+ * V4L2_CID_USER_BCM2835_ISP_SHARPEN ctrl.
+ *
+ * @enabled: Enable sharpening.
+ * @threshold: Threshold at which to start sharpening pixels.
+ * @strength: Strength with which pixel sharpening increases.
+ * @limit: Limit to the amount of sharpening applied.
+ */
+struct bcm2835_isp_sharpen {
+ __u32 enabled;
+ struct bcm2835_isp_rational threshold;
+ struct bcm2835_isp_rational strength;
+ struct bcm2835_isp_rational limit;
+};
+
+/**
+ * enum bcm2835_isp_dpc_mode - defective pixel correction (DPC) strength.
+ *
+ * @DPC_MODE_OFF: No DPC.
+ * @DPC_MODE_NORMAL: Normal DPC.
+ * @DPC_MODE_STRONG: Strong DPC.
+ */
+enum bcm2835_isp_dpc_mode {
+ DPC_MODE_OFF = 0,
+ DPC_MODE_NORMAL = 1,
+ DPC_MODE_STRONG = 2,
+};
+
+/**
+ * struct bcm2835_isp_dpc - Defective pixel correction (DPC) parameters set
+ * with the V4L2_CID_USER_BCM2835_ISP_DPC ctrl.
+ *
+ * @enabled: Enable DPC.
+ * @strength: DPC strength (see enum &bcm2835_isp_dpc_mode).
+ */
+struct bcm2835_isp_dpc {
+ __u32 enabled;
+ __u32 strength;
+};
+
+/*
+ * ISP statistics structures.
+ *
+ * The bcm2835_isp_stats structure is generated at the output of the
+ * statistics node. Note that this does not directly map onto the statistics
+ * output of the ISP HW. Instead, the MMAL firmware code maps the HW statistics
+ * to the bcm2835_isp_stats structure.
+ */
+#define DEFAULT_AWB_REGIONS_X 16
+#define DEFAULT_AWB_REGIONS_Y 12
+
+#define NUM_HISTOGRAMS 2
+#define NUM_HISTOGRAM_BINS 128
+#define AWB_REGIONS (DEFAULT_AWB_REGIONS_X * DEFAULT_AWB_REGIONS_Y)
+#define FLOATING_REGIONS 16
+#define AGC_REGIONS 16
+#define FOCUS_REGIONS 12
+
+/**
+ * struct bcm2835_isp_stats_hist - Histogram statistics
+ *
+ * @r_hist: Red channel histogram.
+ * @g_hist: Combined green channel histogram.
+ * @b_hist: Blue channel histogram.
+ */
+struct bcm2835_isp_stats_hist {
+ __u32 r_hist[NUM_HISTOGRAM_BINS];
+ __u32 g_hist[NUM_HISTOGRAM_BINS];
+ __u32 b_hist[NUM_HISTOGRAM_BINS];
+};
+
+/**
+ * struct bcm2835_isp_stats_region - Region sums.
+ *
+ * @counted: The number of 2x2 bayer tiles accumulated.
+ * @notcounted: The number of 2x2 bayer tiles not accumulated.
+ * @r_sum: Total sum of counted pixels in the red channel for a region.
+ * @g_sum: Total sum of counted pixels in the green channel for a region.
+ * @b_sum: Total sum of counted pixels in the blue channel for a region.
+ */
+struct bcm2835_isp_stats_region {
+ __u32 counted;
+ __u32 notcounted;
+ __u64 r_sum;
+ __u64 g_sum;
+ __u64 b_sum;
+};
+
+/**
+ * struct bcm2835_isp_stats_focus - Focus statistics.
+ *
+ * @contrast_val: Focus measure - accumulated output of the focus filter.
+ * In the first dimension, index [0] counts pixels below a
+ * preset threshold, and index [1] counts pixels above the
+ * threshold. In the second dimension, index [0] uses the
+ * first predefined filter, and index [1] uses the second
+ * predefined filter.
+ * @contrast_val_num: The number of counted pixels in the above accumulation.
+ */
+struct bcm2835_isp_stats_focus {
+ __u64 contrast_val[2][2];
+ __u32 contrast_val_num[2][2];
+};
+
+/**
+ * struct bcm2835_isp_stats - ISP statistics.
+ *
+ * @version: Version of the bcm2835_isp_stats structure.
+ * @size: Size of the bcm2835_isp_stats structure.
+ * @hist: Histogram statistics for the entire image.
+ * @awb_stats: Statistics for the regions defined for AWB calculations.
+ * @floating_stats: Statistics for arbitrarily placed (floating) regions.
+ * @agc_stats: Statistics for the regions defined for AGC calculations.
+ * @focus_stats: Focus filter statistics for the focus regions.
+ */
+struct bcm2835_isp_stats {
+ __u32 version;
+ __u32 size;
+ struct bcm2835_isp_stats_hist hist[NUM_HISTOGRAMS];
+ struct bcm2835_isp_stats_region awb_stats[AWB_REGIONS];
+ struct bcm2835_isp_stats_region floating_stats[FLOATING_REGIONS];
+ struct bcm2835_isp_stats_region agc_stats[AGC_REGIONS];
+ struct bcm2835_isp_stats_focus focus_stats[FOCUS_REGIONS];
+};
+
+#endif /* __BCM2835_ISP_H_ */
--
2.52.0
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