* [RFC PATCH 0/3] Add support for BCM2835 camera interface (unicam)
@ 2022-01-12 17:27 Jean-Michel Hautbois
2022-01-12 17:27 ` [RFC PATCH 1/3] media: dt-bindings: media: Add bindings for bcm2835-unicam Jean-Michel Hautbois
` (2 more replies)
0 siblings, 3 replies; 6+ messages in thread
From: Jean-Michel Hautbois @ 2022-01-12 17:27 UTC (permalink / raw)
To: linux-media
Cc: kernel-list, mchehab, dave.stevenson, linux-rpi-kernel,
linux-arm-kernel, linux-kernel, laurent.pinchart, naush, lukasz,
devicetree, jeanmichel.hautbois
Hello !
This patch series adds the BCM2835 CCP2/CSI2 camera interface named
unicam. This driver is already used in the out-of-tree linux-rpi
repository [1], and this work aims to support it in mainline.
The series is based on top of:
- Rebased on top of 5.16 Tomi Valkeinen's multiplexed stream work, on
his multistream/work branch [2] which has been submitted as v10 at the
time of this writing. The objective is to demonstrate the use of
multiplexed streams on a real world widely used example as well as
supporting unicam mainline.
- "Add 12bit and 14bit luma-only formats" series [3].
The series is made of 4 patches:
- 2/3 introduces dt-bindings documentation and MAINTAINERS entry
I have tentatively assigned maintainership, is this fine ?
- 2/3 adds the driver support in media/platform
- 3/3 modifies imx219 driver to make it use the multiplexed streams API
All those patches are in my tree [4].
Patch 2/3 comes from the linux-rpi work [1] with substantial
modifications:
- Removed the non-mc API which is deprecated, and not needed upstream
- Moved from one video node with two source pads (image and embedded) to
two video nodes
- Added a subdev between the sensor and the video nodes to properly
route the streams
- Added support for multiplexed streams API
In order to test it, one will need a RPi board and the camv2 (imx219)
sensor. An updated v4l-utils is also needed [5] to have support for
multiplexed streams.
v4l2-compliance passes on both video devices, without streaming testing
though.
The downstream DTB's and overlays are used from the existing Raspberry
Pi OS for testing, and this series does not yet integrate the device
tree nodes into the upstream BCM2835 or BCM2711 device tree support.
The media-ctl topology is:
```
pi@raspberrypi:~ $ media-ctl -d0 -p
Media controller API version 5.16.0
Media device information
------------------------
driver unicam
model unicam
serial
bus info platform:fe801000.csi
hw revision 0x0
driver version 5.16.0
Device topology
- entity 1: unicam-subdev (3 pads, 3 links, 1 route)
type V4L2 subdev subtype Unknown flags 0
device node name /dev/v4l-subdev0
routes:
0/0 -> 1/0 [ACTIVE]
pad0: Sink
[stream:0 fmt:UYVY8_2X8/640x480 field:none colorspace:srgb xfer:srgb ycbcr:601 quantization:lim-range]
<- "imx219 10-0010":0 [ENABLED,IMMUTABLE]
pad1: Source
[stream:0 fmt:UYVY8_2X8/640x480 field:none colorspace:srgb xfer:srgb ycbcr:601 quantization:lim-range]
-> "unicam-image":0 [ENABLED,IMMUTABLE]
pad2: Source
-> "unicam-embedded":0 [ENABLED,IMMUTABLE]
- entity 5: imx219 10-0010 (1 pad, 1 link, 2 routes)
type V4L2 subdev subtype Sensor flags 0
device node name /dev/v4l-subdev1
routes:
0/0 -> 0/0 [ACTIVE, IMMUTABLE, SOURCE]
0/0 -> 0/1 [ACTIVE, SOURCE]
pad0: Source
[stream:0 fmt:SRGGB10_1X10/3280x2464 field:none colorspace:raw
crop.bounds:(8,8)/3280x2464
crop:(8,8)/3280x2464]
[stream:1 fmt:METADATA_8/16384x1 field:none
crop.bounds:(8,8)/3280x2464
crop:(8,8)/3280x2464]
-> "unicam-subdev":0 [ENABLED,IMMUTABLE]
- entity 7: unicam-image (1 pad, 1 link, 0 route)
type Node subtype V4L flags 1
device node name /dev/video0
pad0: Sink
<- "unicam-subdev":1 [ENABLED,IMMUTABLE]
- entity 13: unicam-embedded (1 pad, 1 link, 0 route)
type Node subtype V4L flags 0
device node name /dev/video1
pad0: Sink
<- "unicam-subdev":2 [ENABLED,IMMUTABLE]
```
In order to properly configure the media pipeline, it is needed to call
the usual ioctls, and configure routing in order to send the embedded
data from the sensor to the "unicam-embedded" device node :
``` media=0
media-ctl -d${media} -l "'imx219 10-0010':0->'unicam-subdev':0 [1]"
media-ctl -d${media} -l "'unicam-subdev':1->'unicam-image':0 [1]"
media-ctl -d${media} -v -R "'unicam-subdev' [0/0->1/0[1],0/1->2/0[1]]"
media-ctl -d${media} -V "'imx219 10-0010':0/0
[fmt:SRGGB10_1X10/3280x2464 field:none]" v4l2-ctl -d0 --set-fmt-video
width=3280,height=2464,pixelformat='pRAA',field=none media-ctl
-d${media} -v -V "'imx219 10-0010':0/1 [fmt:METADATA_8/16384x1
field:none]" media-ctl -d${media} -p ```
Be sure to configure the routes before setting the format, as s_routing
resets the default format.
Then a frame can be capture with yavta:
`yavta --capture=1 /dev/video0 -F/tmp/test-#.bin`
[1]: https://github.com/raspberrypi/linux/tree/rpi-5.15.y
[2]: https://git.kernel.org/pub/scm/linux/kernel/git/tomba/linux.git/log/?h=multistream/work
[3]: https://patchwork.linuxtv.org/project/linux-media/list/?series=7099
[4]: https://github.com/jhautbois/linux-rpi/tree/jmh/tomba/multistream/work-v10
[5]: https://github.com/tomba/v4l-utils
Jean-Michel Hautbois (3):
media: dt-bindings: media: Add bindings for bcm2835-unicam
media: bcm2835-unicam: Add support for for CCP2/CSI2 camera interface
media: imx219: Add support for multiplexed streams
.../bindings/media/brcm,bcm2835-unicam.yaml | 103 +
MAINTAINERS | 7 +
drivers/media/i2c/imx219.c | 458 +--
drivers/media/platform/Kconfig | 1 +
drivers/media/platform/Makefile | 2 +
drivers/media/platform/bcm2835/Kconfig | 21 +
drivers/media/platform/bcm2835/Makefile | 3 +
.../media/platform/bcm2835/bcm2835-unicam.c | 2694 +++++++++++++++++
.../media/platform/bcm2835/vc4-regs-unicam.h | 253 ++
9 files changed, 3332 insertions(+), 210 deletions(-)
create mode 100644 Documentation/devicetree/bindings/media/brcm,bcm2835-unicam.yaml
create mode 100644 drivers/media/platform/bcm2835/Kconfig
create mode 100644 drivers/media/platform/bcm2835/Makefile
create mode 100644 drivers/media/platform/bcm2835/bcm2835-unicam.c
create mode 100644 drivers/media/platform/bcm2835/vc4-regs-unicam.h
--
2.32.0
^ permalink raw reply [flat|nested] 6+ messages in thread
* [RFC PATCH 1/3] media: dt-bindings: media: Add bindings for bcm2835-unicam
2022-01-12 17:27 [RFC PATCH 0/3] Add support for BCM2835 camera interface (unicam) Jean-Michel Hautbois
@ 2022-01-12 17:27 ` Jean-Michel Hautbois
2022-01-12 18:34 ` Laurent Pinchart
2022-01-13 16:29 ` Rob Herring
2022-01-12 17:27 ` [RFC PATCH 2/3] media: bcm2835-unicam: Add support for for CCP2/CSI2 camera interface Jean-Michel Hautbois
2022-01-12 17:27 ` [RFC PATCH 3/3] media: imx219: Add support for multiplexed streams Jean-Michel Hautbois
2 siblings, 2 replies; 6+ messages in thread
From: Jean-Michel Hautbois @ 2022-01-12 17:27 UTC (permalink / raw)
To: linux-media
Cc: kernel-list, mchehab, dave.stevenson, linux-rpi-kernel,
linux-arm-kernel, linux-kernel, laurent.pinchart, naush, lukasz,
devicetree, jeanmichel.hautbois
Introduce the dt-bindinds documentation for bcm2835 CCP2/CSI2 camera
interface. Also add a MAINTAINERS entry for it.
Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
Signed-off-by: Naushir Patuck <naush@raspberrypi.com>
Signed-off-by: Jean-Michel Hautbois <jeanmichel.hautbois@ideasonboard.com>
---
Dave: I assumed you were the maintainer for this file, as I based it on the
bcm2835-unicam.txt file. Are you happy to be added directly as the
maintainer, or should this be specified as "Raspberry Pi Kernel
Maintenance <kernel-list@raspberrypi.com>"
---
.../bindings/media/brcm,bcm2835-unicam.yaml | 103 ++++++++++++++++++
MAINTAINERS | 6 +
2 files changed, 109 insertions(+)
create mode 100644 Documentation/devicetree/bindings/media/brcm,bcm2835-unicam.yaml
diff --git a/Documentation/devicetree/bindings/media/brcm,bcm2835-unicam.yaml b/Documentation/devicetree/bindings/media/brcm,bcm2835-unicam.yaml
new file mode 100644
index 000000000000..1427514142cf
--- /dev/null
+++ b/Documentation/devicetree/bindings/media/brcm,bcm2835-unicam.yaml
@@ -0,0 +1,103 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/media/brcm,bcm2835-unicam.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Broadcom BCM283x Camera Interface (Unicam)
+
+maintainers:
+ - Dave Stevenson <dave.stevenson@raspberrypi.com>
+
+description: |-
+ The Unicam block on BCM283x SoCs is the receiver for either
+ CSI-2 or CCP2 data from image sensors or similar devices.
+
+ The main platform using this SoC is the Raspberry Pi family of boards.
+ On the Pi the VideoCore firmware can also control this hardware block,
+ and driving it from two different processors will cause issues.
+ To avoid this, the firmware checks the device tree configuration
+ during boot. If it finds device tree nodes called csi0 or csi1 then
+ it will stop the firmware accessing the block, and it can then
+ safely be used via the device tree binding.
+
+properties:
+ compatible:
+ const: brcm,bcm2835-unicam
+
+ reg:
+ description:
+ physical base address and length of the register sets for the device.
+ maxItems: 1
+
+ interrupts:
+ description: the IRQ line for this Unicam instance.
+ maxItems: 1
+
+ clocks:
+ description: |-
+ list of clock specifiers, corresponding to entries in clock-names
+ property.
+
+ clock-names:
+ items:
+ - const: lp
+ - const: vpu
+
+ port:
+ $ref: /schemas/graph.yaml#/properties/port
+
+required:
+ - compatible
+ - reg
+ - interrupts
+ - clocks
+ - clock-names
+ - port
+
+additionalProperties: False
+
+examples:
+ - |
+ csi1: csi1@7e801000 {
+ compatible = "brcm,bcm2835-unicam";
+ reg = <0x7e801000 0x800>,
+ <0x7e802004 0x4>;
+ interrupts = <2 7>;
+ clocks = <&clocks BCM2835_CLOCK_CAM1>,
+ <&firmware_clocks 4>;
+ clock-names = "lp", "vpu";
+ port {
+ csi1_ep: endpoint {
+ remote-endpoint = <&tc358743_0>;
+ data-lanes = <1 2>;
+ };
+ };
+ };
+
+ i2c0: i2c@7e205000 {
+ tc358743: csi-hdmi-bridge@0f {
+ compatible = "toshiba,tc358743";
+ reg = <0x0f>;
+ clocks = <&tc358743_clk>;
+ clock-names = "refclk";
+
+ tc358743_clk: bridge-clk {
+ compatible = "fixed-clock";
+ #clock-cells = <0>;
+ clock-frequency = <27000000>;
+ };
+
+ port {
+ tc358743_0: endpoint {
+ remote-endpoint = <&csi1_ep>;
+ clock-lanes = <0>;
+ data-lanes = <1 2>;
+ clock-noncontinuous;
+ link-frequencies =
+ /bits/ 64 <297000000>;
+ };
+ };
+ };
+ };
+...
diff --git a/MAINTAINERS b/MAINTAINERS
index 269aa4d6b94a..7484255cad31 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -3653,6 +3653,12 @@ N: bcm113*
N: bcm216*
N: kona
+BROADCOM BCM2835 CAMERA DRIVER
+M: Raspberry Pi Kernel Maintenance <kernel-list@raspberrypi.com>
+L: linux-media@vger.kernel.org
+S: Maintained
+F: Documentation/devicetree/bindings/media/brcm,bcm2835-unicam.yaml
+
BROADCOM BCM47XX MIPS ARCHITECTURE
M: Hauke Mehrtens <hauke@hauke-m.de>
M: Rafał Miłecki <zajec5@gmail.com>
--
2.32.0
^ permalink raw reply related [flat|nested] 6+ messages in thread
* [RFC PATCH 2/3] media: bcm2835-unicam: Add support for for CCP2/CSI2 camera interface
2022-01-12 17:27 [RFC PATCH 0/3] Add support for BCM2835 camera interface (unicam) Jean-Michel Hautbois
2022-01-12 17:27 ` [RFC PATCH 1/3] media: dt-bindings: media: Add bindings for bcm2835-unicam Jean-Michel Hautbois
@ 2022-01-12 17:27 ` Jean-Michel Hautbois
2022-01-12 17:27 ` [RFC PATCH 3/3] media: imx219: Add support for multiplexed streams Jean-Michel Hautbois
2 siblings, 0 replies; 6+ messages in thread
From: Jean-Michel Hautbois @ 2022-01-12 17:27 UTC (permalink / raw)
To: linux-media
Cc: kernel-list, mchehab, dave.stevenson, linux-rpi-kernel,
linux-arm-kernel, linux-kernel, laurent.pinchart, naush, lukasz,
devicetree, jeanmichel.hautbois
Add driver for the Unicam camera receiver block on BCM283x processors.
It is represented as two video device nodes: unicam-image and
unicam-embedded which are connected to an internal subdev (named
unicam-subdev) in order to manage streams routing.
Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
Signed-off-by: Naushir Patuck <naush@raspberrypi.com>
Signed-off-by: Jean-Michel Hautbois <jeanmichel.hautbois@ideasonboard.com>
---
MAINTAINERS | 1 +
drivers/media/platform/Kconfig | 1 +
drivers/media/platform/Makefile | 2 +
drivers/media/platform/bcm2835/Kconfig | 21 +
drivers/media/platform/bcm2835/Makefile | 3 +
.../media/platform/bcm2835/bcm2835-unicam.c | 2694 +++++++++++++++++
.../media/platform/bcm2835/vc4-regs-unicam.h | 253 ++
7 files changed, 2975 insertions(+)
create mode 100644 drivers/media/platform/bcm2835/Kconfig
create mode 100644 drivers/media/platform/bcm2835/Makefile
create mode 100644 drivers/media/platform/bcm2835/bcm2835-unicam.c
create mode 100644 drivers/media/platform/bcm2835/vc4-regs-unicam.h
diff --git a/MAINTAINERS b/MAINTAINERS
index 7484255cad31..dd7f8321fe27 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -3658,6 +3658,7 @@ M: Raspberry Pi Kernel Maintenance <kernel-list@raspberrypi.com>
L: linux-media@vger.kernel.org
S: Maintained
F: Documentation/devicetree/bindings/media/brcm,bcm2835-unicam.yaml
+F: drivers/media/platform/bcm2835/
BROADCOM BCM47XX MIPS ARCHITECTURE
M: Hauke Mehrtens <hauke@hauke-m.de>
diff --git a/drivers/media/platform/Kconfig b/drivers/media/platform/Kconfig
index 9fbdba0fd1e7..033b0358fbb8 100644
--- a/drivers/media/platform/Kconfig
+++ b/drivers/media/platform/Kconfig
@@ -170,6 +170,7 @@ source "drivers/media/platform/am437x/Kconfig"
source "drivers/media/platform/xilinx/Kconfig"
source "drivers/media/platform/rcar-vin/Kconfig"
source "drivers/media/platform/atmel/Kconfig"
+source "drivers/media/platform/bcm2835/Kconfig"
source "drivers/media/platform/sunxi/Kconfig"
config VIDEO_TI_CAL
diff --git a/drivers/media/platform/Makefile b/drivers/media/platform/Makefile
index 19bcbced7382..689e64857db1 100644
--- a/drivers/media/platform/Makefile
+++ b/drivers/media/platform/Makefile
@@ -85,6 +85,8 @@ obj-$(CONFIG_VIDEO_QCOM_CAMSS) += qcom/camss/
obj-$(CONFIG_VIDEO_QCOM_VENUS) += qcom/venus/
+obj-y += bcm2835/
+
obj-y += sunxi/
obj-$(CONFIG_VIDEO_MESON_GE2D) += meson/ge2d/
diff --git a/drivers/media/platform/bcm2835/Kconfig b/drivers/media/platform/bcm2835/Kconfig
new file mode 100644
index 000000000000..bd1370199650
--- /dev/null
+++ b/drivers/media/platform/bcm2835/Kconfig
@@ -0,0 +1,21 @@
+# Broadcom VideoCore4 V4L2 camera support
+
+config VIDEO_BCM2835_UNICAM
+ tristate "Broadcom BCM283x/BCM271x Unicam video capture driver"
+ depends on VIDEO_V4L2
+ depends on ARCH_BCM2835 || COMPILE_TEST
+ select VIDEO_V4L2_SUBDEV_API
+ select MEDIA_CONTROLLER
+ select VIDEOBUF2_DMA_CONTIG
+ select V4L2_FWNODE
+ help
+ Say Y here to enable support for the BCM283x/BCM271x CSI-2 receiver.
+ This is a V4L2 driver that controls the CSI-2 receiver directly,
+ independently from the VC4 firmware.
+ This driver is mutually exclusive with the use of bcm2835-camera. The
+ firmware will disable all access to the peripheral from within the
+ firmware if it finds a DT node using it, and bcm2835-camera will
+ therefore fail to probe.
+
+ To compile this driver as a module, choose M here. The module will be
+ called bcm2835-unicam.
diff --git a/drivers/media/platform/bcm2835/Makefile b/drivers/media/platform/bcm2835/Makefile
new file mode 100644
index 000000000000..a98aba03598a
--- /dev/null
+++ b/drivers/media/platform/bcm2835/Makefile
@@ -0,0 +1,3 @@
+# Makefile for BCM2835 Unicam driver
+
+obj-$(CONFIG_VIDEO_BCM2835_UNICAM) += bcm2835-unicam.o
diff --git a/drivers/media/platform/bcm2835/bcm2835-unicam.c b/drivers/media/platform/bcm2835/bcm2835-unicam.c
new file mode 100644
index 000000000000..2970d318f3f9
--- /dev/null
+++ b/drivers/media/platform/bcm2835/bcm2835-unicam.c
@@ -0,0 +1,2694 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * BCM283x / BCM271x Unicam Capture Driver
+ *
+ * Copyright (C) 2017-2020 - Raspberry Pi (Trading) Ltd.
+ *
+ * Dave Stevenson <dave.stevenson@raspberrypi.com>
+ *
+ * Based on TI am437x driver by
+ * Benoit Parrot <bparrot@ti.com>
+ * Lad, Prabhakar <prabhakar.csengg@gmail.com>
+ *
+ * and TI CAL camera interface driver by
+ * Benoit Parrot <bparrot@ti.com>
+ *
+ *
+ * There are two camera drivers in the kernel for BCM283x - this one
+ * and bcm2835-camera (currently in staging).
+ *
+ * This driver directly controls the Unicam peripheral - there is no
+ * involvement with the VideoCore firmware. Unicam receives CSI-2 or
+ * CCP2 data and writes it into SDRAM.
+ * The only potential processing options are to repack Bayer data into an
+ * alternate format, and applying windowing.
+ * The repacking does not shift the data, so can repack V4L2_PIX_FMT_Sxxxx10P
+ * to V4L2_PIX_FMT_Sxxxx10, or V4L2_PIX_FMT_Sxxxx12P to V4L2_PIX_FMT_Sxxxx12,
+ * but not generically up to V4L2_PIX_FMT_Sxxxx16. The driver will add both
+ * formats where the relevant formats are defined, and will automatically
+ * configure the repacking as required.
+ * Support for windowing may be added later.
+ *
+ * It should be possible to connect this driver to any sensor with a
+ * suitable output interface and V4L2 subdevice driver.
+ *
+ * bcm2835-camera uses the VideoCore firmware to control the sensor,
+ * Unicam, ISP, and all tuner control loops. Fully processed frames are
+ * delivered to the driver by the firmware. It only has sensor drivers
+ * for Omnivision OV5647, and Sony IMX219 sensors.
+ *
+ * The two drivers are mutually exclusive for the same Unicam instance.
+ * The VideoCore firmware checks the device tree configuration during boot.
+ * If it finds device tree nodes called csi0 or csi1 it will block the
+ * firmware from accessing the peripheral, and bcm2835-camera will
+ * not be able to stream data.
+ */
+
+#include <linux/clk.h>
+#include <linux/delay.h>
+#include <linux/device.h>
+#include <linux/dma-mapping.h>
+#include <linux/err.h>
+#include <linux/init.h>
+#include <linux/interrupt.h>
+#include <linux/io.h>
+#include <linux/module.h>
+#include <linux/of_device.h>
+#include <linux/of_graph.h>
+#include <linux/pinctrl/consumer.h>
+#include <linux/platform_device.h>
+#include <linux/pm_runtime.h>
+#include <linux/slab.h>
+#include <linux/uaccess.h>
+#include <linux/videodev2.h>
+
+#include <media/v4l2-common.h>
+#include <media/v4l2-ctrls.h>
+#include <media/v4l2-dev.h>
+#include <media/v4l2-device.h>
+#include <media/v4l2-dv-timings.h>
+#include <media/v4l2-event.h>
+#include <media/v4l2-ioctl.h>
+#include <media/v4l2-fwnode.h>
+#include <media/videobuf2-dma-contig.h>
+
+#include <media/v4l2-async.h>
+#define v4l2_async_nf_add_subdev __v4l2_async_nf_add_subdev
+
+#include "vc4-regs-unicam.h"
+
+#define UNICAM_MODULE_NAME "unicam"
+#define UNICAM_VERSION "0.1.0"
+
+static int debug;
+module_param(debug, int, 0644);
+MODULE_PARM_DESC(debug, "Debug level 0-3");
+
+#define unicam_dbg(level, dev, fmt, arg...) \
+ v4l2_dbg(level, debug, &(dev)->v4l2_dev, fmt, ##arg)
+#define unicam_info(dev, fmt, arg...) \
+ v4l2_info(&(dev)->v4l2_dev, fmt, ##arg)
+#define unicam_err(dev, fmt, arg...) \
+ v4l2_err(&(dev)->v4l2_dev, fmt, ##arg)
+
+/*
+ * Unicam must request a minimum of 250Mhz from the VPU clock.
+ * Otherwise the input FIFOs overrun and cause image corruption.
+ */
+#define MIN_VPU_CLOCK_RATE (250 * 1000 * 1000)
+/*
+ * To protect against a dodgy sensor driver never returning an error from
+ * enum_mbus_code, set a maximum index value to be used.
+ */
+#define MAX_ENUM_MBUS_CODE 128
+
+/*
+ * Stride is a 16 bit register, but also has to be a multiple of 32.
+ */
+#define BPL_ALIGNMENT 32
+#define MAX_BYTESPERLINE ((1 << 16) - BPL_ALIGNMENT)
+/*
+ * Max width is therefore determined by the max stride divided by
+ * the number of bits per pixel. Take 32bpp as a
+ * worst case.
+ * No imposed limit on the height, so adopt a square image for want
+ * of anything better.
+ */
+#define MAX_WIDTH (MAX_BYTESPERLINE / 4)
+#define MAX_HEIGHT MAX_WIDTH
+/* Define a nominal minimum image size */
+#define MIN_WIDTH 16
+#define MIN_HEIGHT 16
+/* Default size of the embedded buffer */
+#define UNICAM_EMBEDDED_SIZE 16384
+
+/*
+ * Size of the dummy buffer. Can be any size really, but the DMA
+ * allocation works in units of page sizes.
+ */
+#define DUMMY_BUF_SIZE (PAGE_SIZE)
+
+#define UNICAM_SD_PAD_SINK 0
+#define UNICAM_SD_PAD_FIRST_SOURCE 1
+#define UNICAM_SD_NUM_SOURCE_PADS 2
+#define UNICAM_SD_NUM_PADS (1 + UNICAM_SD_NUM_SOURCE_PADS)
+
+static inline bool unicam_sd_pad_is_sink(u32 pad)
+{
+ /* Camera RX has 1 sink pad, and N source pads */
+ return pad == 0;
+}
+
+static inline bool unicam_sd_pad_is_source(u32 pad)
+{
+ /* Camera RX has 1 sink pad, and N source pads */
+ return pad >= UNICAM_SD_PAD_FIRST_SOURCE &&
+ pad <= UNICAM_SD_NUM_SOURCE_PADS;
+}
+
+enum node_types {
+ IMAGE_NODE,
+ METADATA_NODE,
+ MAX_NODES
+};
+
+#define MASK_CS_DEFAULT BIT(V4L2_COLORSPACE_DEFAULT)
+#define MASK_CS_SMPTE170M BIT(V4L2_COLORSPACE_SMPTE170M)
+#define MASK_CS_SMPTE240M BIT(V4L2_COLORSPACE_SMPTE240M)
+#define MASK_CS_REC709 BIT(V4L2_COLORSPACE_REC709)
+#define MASK_CS_BT878 BIT(V4L2_COLORSPACE_BT878)
+#define MASK_CS_470_M BIT(V4L2_COLORSPACE_470_SYSTEM_M)
+#define MASK_CS_470_BG BIT(V4L2_COLORSPACE_470_SYSTEM_BG)
+#define MASK_CS_JPEG BIT(V4L2_COLORSPACE_JPEG)
+#define MASK_CS_SRGB BIT(V4L2_COLORSPACE_SRGB)
+#define MASK_CS_OPRGB BIT(V4L2_COLORSPACE_OPRGB)
+#define MASK_CS_BT2020 BIT(V4L2_COLORSPACE_BT2020)
+#define MASK_CS_RAW BIT(V4L2_COLORSPACE_RAW)
+#define MASK_CS_DCI_P3 BIT(V4L2_COLORSPACE_DCI_P3)
+
+#define MAX_COLORSPACE 32
+
+/*
+ * struct unicam_fmt - Unicam media bus format information
+ * @pixelformat: V4L2 pixel format FCC identifier. 0 if n/a.
+ * @repacked_fourcc: V4L2 pixel format FCC identifier if the data is expanded
+ * out to 16bpp. 0 if n/a.
+ * @code: V4L2 media bus format code.
+ * @depth: Bits per pixel as delivered from the source.
+ * @csi_dt: CSI data type.
+ * @valid_colorspaces: Bitmask of valid colorspaces so that the Media Controller
+ * centric try_fmt can validate the colorspace and pass
+ * v4l2-compliance.
+ * @check_variants: Flag to denote that there are multiple mediabus formats
+ * still in the list that could match this V4L2 format.
+ * @mc_skip: Media Controller shouldn't list this format via ENUM_FMT as it is
+ * a duplicate of an earlier format.
+ * @metadata_fmt: This format only applies to the metadata pad.
+ */
+struct unicam_fmt {
+ u32 fourcc;
+ u32 repacked_fourcc;
+ u32 code;
+ u8 depth;
+ u8 csi_dt;
+ u32 valid_colorspaces;
+ u8 check_variants:1;
+ u8 mc_skip:1;
+ u8 metadata_fmt:1;
+};
+
+static const struct unicam_fmt formats[] = {
+ /* YUV Formats */
+ {
+ .fourcc = V4L2_PIX_FMT_YUYV,
+ .code = MEDIA_BUS_FMT_YUYV8_2X8,
+ .depth = 16,
+ .csi_dt = 0x1e,
+ .check_variants = 1,
+ .valid_colorspaces = MASK_CS_SMPTE170M | MASK_CS_REC709 |
+ MASK_CS_JPEG,
+ }, {
+ .fourcc = V4L2_PIX_FMT_UYVY,
+ .code = MEDIA_BUS_FMT_UYVY8_2X8,
+ .depth = 16,
+ .csi_dt = 0x1e,
+ .check_variants = 1,
+ .valid_colorspaces = MASK_CS_SMPTE170M | MASK_CS_REC709 |
+ MASK_CS_JPEG,
+ }, {
+ .fourcc = V4L2_PIX_FMT_YVYU,
+ .code = MEDIA_BUS_FMT_YVYU8_2X8,
+ .depth = 16,
+ .csi_dt = 0x1e,
+ .check_variants = 1,
+ .valid_colorspaces = MASK_CS_SMPTE170M | MASK_CS_REC709 |
+ MASK_CS_JPEG,
+ }, {
+ .fourcc = V4L2_PIX_FMT_VYUY,
+ .code = MEDIA_BUS_FMT_VYUY8_2X8,
+ .depth = 16,
+ .csi_dt = 0x1e,
+ .check_variants = 1,
+ .valid_colorspaces = MASK_CS_SMPTE170M | MASK_CS_REC709 |
+ MASK_CS_JPEG,
+ }, {
+ .fourcc = V4L2_PIX_FMT_YUYV,
+ .code = MEDIA_BUS_FMT_YUYV8_1X16,
+ .depth = 16,
+ .csi_dt = 0x1e,
+ .mc_skip = 1,
+ .valid_colorspaces = MASK_CS_SMPTE170M | MASK_CS_REC709 |
+ MASK_CS_JPEG,
+ }, {
+ .fourcc = V4L2_PIX_FMT_UYVY,
+ .code = MEDIA_BUS_FMT_UYVY8_1X16,
+ .depth = 16,
+ .csi_dt = 0x1e,
+ .mc_skip = 1,
+ .valid_colorspaces = MASK_CS_SMPTE170M | MASK_CS_REC709 |
+ MASK_CS_JPEG,
+ }, {
+ .fourcc = V4L2_PIX_FMT_YVYU,
+ .code = MEDIA_BUS_FMT_YVYU8_1X16,
+ .depth = 16,
+ .csi_dt = 0x1e,
+ .mc_skip = 1,
+ .valid_colorspaces = MASK_CS_SMPTE170M | MASK_CS_REC709 |
+ MASK_CS_JPEG,
+ }, {
+ .fourcc = V4L2_PIX_FMT_VYUY,
+ .code = MEDIA_BUS_FMT_VYUY8_1X16,
+ .depth = 16,
+ .csi_dt = 0x1e,
+ .mc_skip = 1,
+ .valid_colorspaces = MASK_CS_SMPTE170M | MASK_CS_REC709 |
+ MASK_CS_JPEG,
+ }, {
+ /* RGB Formats */
+ .fourcc = V4L2_PIX_FMT_RGB565, /* gggbbbbb rrrrrggg */
+ .code = MEDIA_BUS_FMT_RGB565_2X8_LE,
+ .depth = 16,
+ .csi_dt = 0x22,
+ .valid_colorspaces = MASK_CS_SRGB,
+ }, {
+ .fourcc = V4L2_PIX_FMT_RGB565X, /* rrrrrggg gggbbbbb */
+ .code = MEDIA_BUS_FMT_RGB565_2X8_BE,
+ .depth = 16,
+ .csi_dt = 0x22,
+ .valid_colorspaces = MASK_CS_SRGB,
+ }, {
+ .fourcc = V4L2_PIX_FMT_RGB555, /* gggbbbbb arrrrrgg */
+ .code = MEDIA_BUS_FMT_RGB555_2X8_PADHI_LE,
+ .depth = 16,
+ .csi_dt = 0x21,
+ .valid_colorspaces = MASK_CS_SRGB,
+ }, {
+ .fourcc = V4L2_PIX_FMT_RGB555X, /* arrrrrgg gggbbbbb */
+ .code = MEDIA_BUS_FMT_RGB555_2X8_PADHI_BE,
+ .depth = 16,
+ .csi_dt = 0x21,
+ .valid_colorspaces = MASK_CS_SRGB,
+ }, {
+ .fourcc = V4L2_PIX_FMT_RGB24, /* rgb */
+ .code = MEDIA_BUS_FMT_RGB888_1X24,
+ .depth = 24,
+ .csi_dt = 0x24,
+ .valid_colorspaces = MASK_CS_SRGB,
+ }, {
+ .fourcc = V4L2_PIX_FMT_BGR24, /* bgr */
+ .code = MEDIA_BUS_FMT_BGR888_1X24,
+ .depth = 24,
+ .csi_dt = 0x24,
+ .valid_colorspaces = MASK_CS_SRGB,
+ }, {
+ .fourcc = V4L2_PIX_FMT_RGB32, /* argb */
+ .code = MEDIA_BUS_FMT_ARGB8888_1X32,
+ .depth = 32,
+ .csi_dt = 0x0,
+ .valid_colorspaces = MASK_CS_SRGB,
+ }, {
+ /* Bayer Formats */
+ .fourcc = V4L2_PIX_FMT_SBGGR8,
+ .code = MEDIA_BUS_FMT_SBGGR8_1X8,
+ .depth = 8,
+ .csi_dt = 0x2a,
+ .valid_colorspaces = MASK_CS_RAW,
+ }, {
+ .fourcc = V4L2_PIX_FMT_SGBRG8,
+ .code = MEDIA_BUS_FMT_SGBRG8_1X8,
+ .depth = 8,
+ .csi_dt = 0x2a,
+ .valid_colorspaces = MASK_CS_RAW,
+ }, {
+ .fourcc = V4L2_PIX_FMT_SGRBG8,
+ .code = MEDIA_BUS_FMT_SGRBG8_1X8,
+ .depth = 8,
+ .csi_dt = 0x2a,
+ .valid_colorspaces = MASK_CS_RAW,
+ }, {
+ .fourcc = V4L2_PIX_FMT_SRGGB8,
+ .code = MEDIA_BUS_FMT_SRGGB8_1X8,
+ .depth = 8,
+ .csi_dt = 0x2a,
+ .valid_colorspaces = MASK_CS_RAW,
+ }, {
+ .fourcc = V4L2_PIX_FMT_SBGGR10P,
+ .repacked_fourcc = V4L2_PIX_FMT_SBGGR10,
+ .code = MEDIA_BUS_FMT_SBGGR10_1X10,
+ .depth = 10,
+ .csi_dt = 0x2b,
+ .valid_colorspaces = MASK_CS_RAW,
+ }, {
+ .fourcc = V4L2_PIX_FMT_SGBRG10P,
+ .repacked_fourcc = V4L2_PIX_FMT_SGBRG10,
+ .code = MEDIA_BUS_FMT_SGBRG10_1X10,
+ .depth = 10,
+ .csi_dt = 0x2b,
+ .valid_colorspaces = MASK_CS_RAW,
+ }, {
+ .fourcc = V4L2_PIX_FMT_SGRBG10P,
+ .repacked_fourcc = V4L2_PIX_FMT_SGRBG10,
+ .code = MEDIA_BUS_FMT_SGRBG10_1X10,
+ .depth = 10,
+ .csi_dt = 0x2b,
+ .valid_colorspaces = MASK_CS_RAW,
+ }, {
+ .fourcc = V4L2_PIX_FMT_SRGGB10P,
+ .repacked_fourcc = V4L2_PIX_FMT_SRGGB10,
+ .code = MEDIA_BUS_FMT_SRGGB10_1X10,
+ .depth = 10,
+ .csi_dt = 0x2b,
+ .valid_colorspaces = MASK_CS_RAW,
+ }, {
+ .fourcc = V4L2_PIX_FMT_SBGGR12P,
+ .repacked_fourcc = V4L2_PIX_FMT_SBGGR12,
+ .code = MEDIA_BUS_FMT_SBGGR12_1X12,
+ .depth = 12,
+ .csi_dt = 0x2c,
+ .valid_colorspaces = MASK_CS_RAW,
+ }, {
+ .fourcc = V4L2_PIX_FMT_SGBRG12P,
+ .repacked_fourcc = V4L2_PIX_FMT_SGBRG12,
+ .code = MEDIA_BUS_FMT_SGBRG12_1X12,
+ .depth = 12,
+ .csi_dt = 0x2c,
+ .valid_colorspaces = MASK_CS_RAW,
+ }, {
+ .fourcc = V4L2_PIX_FMT_SGRBG12P,
+ .repacked_fourcc = V4L2_PIX_FMT_SGRBG12,
+ .code = MEDIA_BUS_FMT_SGRBG12_1X12,
+ .depth = 12,
+ .csi_dt = 0x2c,
+ .valid_colorspaces = MASK_CS_RAW,
+ }, {
+ .fourcc = V4L2_PIX_FMT_SRGGB12P,
+ .repacked_fourcc = V4L2_PIX_FMT_SRGGB12,
+ .code = MEDIA_BUS_FMT_SRGGB12_1X12,
+ .depth = 12,
+ .csi_dt = 0x2c,
+ .valid_colorspaces = MASK_CS_RAW,
+ }, {
+ .fourcc = V4L2_PIX_FMT_SBGGR14P,
+ .repacked_fourcc = V4L2_PIX_FMT_SBGGR14,
+ .code = MEDIA_BUS_FMT_SBGGR14_1X14,
+ .depth = 14,
+ .csi_dt = 0x2d,
+ .valid_colorspaces = MASK_CS_RAW,
+ }, {
+ .fourcc = V4L2_PIX_FMT_SGBRG14P,
+ .repacked_fourcc = V4L2_PIX_FMT_SGBRG14,
+ .code = MEDIA_BUS_FMT_SGBRG14_1X14,
+ .depth = 14,
+ .csi_dt = 0x2d,
+ .valid_colorspaces = MASK_CS_RAW,
+ }, {
+ .fourcc = V4L2_PIX_FMT_SGRBG14P,
+ .repacked_fourcc = V4L2_PIX_FMT_SGRBG14,
+ .code = MEDIA_BUS_FMT_SGRBG14_1X14,
+ .depth = 14,
+ .csi_dt = 0x2d,
+ .valid_colorspaces = MASK_CS_RAW,
+ }, {
+ .fourcc = V4L2_PIX_FMT_SRGGB14P,
+ .repacked_fourcc = V4L2_PIX_FMT_SRGGB14,
+ .code = MEDIA_BUS_FMT_SRGGB14_1X14,
+ .depth = 14,
+ .csi_dt = 0x2d,
+ .valid_colorspaces = MASK_CS_RAW,
+ }, {
+ /*
+ * 16 bit Bayer formats could be supported, but there is no CSI2
+ * data_type defined for raw 16, and no sensors that produce it at
+ * present.
+ */
+
+ /* Greyscale formats */
+ .fourcc = V4L2_PIX_FMT_GREY,
+ .code = MEDIA_BUS_FMT_Y8_1X8,
+ .depth = 8,
+ .csi_dt = 0x2a,
+ .valid_colorspaces = MASK_CS_RAW,
+ }, {
+ .fourcc = V4L2_PIX_FMT_Y10P,
+ .repacked_fourcc = V4L2_PIX_FMT_Y10,
+ .code = MEDIA_BUS_FMT_Y10_1X10,
+ .depth = 10,
+ .csi_dt = 0x2b,
+ .valid_colorspaces = MASK_CS_RAW,
+ }, {
+ .fourcc = V4L2_PIX_FMT_Y12P,
+ .repacked_fourcc = V4L2_PIX_FMT_Y12,
+ .code = MEDIA_BUS_FMT_Y12_1X12,
+ .depth = 12,
+ .csi_dt = 0x2c,
+ .valid_colorspaces = MASK_CS_RAW,
+ }, {
+ .fourcc = V4L2_PIX_FMT_Y14P,
+ .repacked_fourcc = V4L2_PIX_FMT_Y14,
+ .code = MEDIA_BUS_FMT_Y14_1X14,
+ .depth = 14,
+ .csi_dt = 0x2d,
+ .valid_colorspaces = MASK_CS_RAW,
+ },
+ /* Embedded data format */
+ {
+ .fourcc = V4L2_META_FMT_8,
+ .code = MEDIA_BUS_FMT_METADATA_8,
+ .depth = 8,
+ .metadata_fmt = 1,
+ }
+};
+
+struct unicam_buffer {
+ struct vb2_v4l2_buffer vb;
+ struct list_head list;
+};
+
+static inline struct unicam_buffer *to_unicam_buffer(struct vb2_buffer *vb)
+{
+ return container_of(vb, struct unicam_buffer, vb.vb2_buf);
+}
+
+struct unicam_node {
+ bool registered;
+ int open;
+ bool streaming;
+ unsigned int node_id;
+ /* Source pad id on the sensor for this node */
+ unsigned int src_pad_id;
+ /* Pointer pointing to current v4l2_buffer */
+ struct unicam_buffer *cur_frm;
+ /* Pointer pointing to next v4l2_buffer */
+ struct unicam_buffer *next_frm;
+ /* video capture */
+ const struct unicam_fmt *fmt;
+ /* Used to store current pixel format */
+ struct v4l2_format v_fmt;
+ /* Used to store current mbus frame format */
+ struct v4l2_mbus_framefmt m_fmt;
+ /* Buffer queue used in video-buf */
+ struct vb2_queue buffer_queue;
+ /* Queue of filled frames */
+ struct list_head dma_queue;
+ /* IRQ lock for DMA queue */
+ spinlock_t dma_queue_lock;
+ /* lock used to access this structure */
+ struct mutex lock;
+ /* Identifies video device for this channel */
+ struct video_device video_dev;
+ /* Pointer to the parent handle */
+ struct unicam_device *dev;
+ struct media_pad pad;
+ unsigned int embedded_lines;
+ struct media_pipeline pipe;
+ /*
+ * Dummy buffer intended to be used by unicam
+ * if we have no other queued buffers to swap to.
+ */
+ void *dummy_buf_cpu_addr;
+ dma_addr_t dummy_buf_dma_addr;
+};
+
+struct unicam_device {
+ struct kref kref;
+
+ /* V4l2 specific parameters */
+ struct v4l2_async_subdev asd;
+
+ /* peripheral base address */
+ void __iomem *base;
+ /* clock gating base address */
+ void __iomem *clk_gate_base;
+ /* lp clock handle */
+ struct clk *clock;
+ /* vpu clock handle */
+ struct clk *vpu_clock;
+ /* vpu clock request */
+ struct clk_request *vpu_req;
+ /* clock status for error handling */
+ bool clocks_enabled;
+ /* V4l2 device */
+ struct v4l2_device v4l2_dev;
+ struct media_device mdev;
+
+ /* parent device */
+ struct platform_device *pdev;
+ /* subdevice async Notifier */
+ struct v4l2_async_notifier notifier;
+ unsigned int sequence;
+
+ /* ptr to sub device */
+ struct v4l2_subdev *sensor;
+ /* Pad config for the sensor */
+ struct v4l2_subdev_state *sensor_state;
+
+ /* Internal subdev */
+ struct v4l2_subdev sd;
+ struct media_pad pads[UNICAM_SD_NUM_PADS];
+
+ bool streaming;
+
+ enum v4l2_mbus_type bus_type;
+ /*
+ * Stores bus.mipi_csi2.flags for CSI2 sensors, or
+ * bus.mipi_csi1.strobe for CCP2.
+ */
+ unsigned int bus_flags;
+ unsigned int max_data_lanes;
+ unsigned int active_data_lanes;
+ bool sensor_embedded_data;
+
+ struct unicam_node node[MAX_NODES];
+ struct v4l2_ctrl_handler ctrl_handler;
+
+ bool mc_api;
+};
+
+static inline struct unicam_device *
+to_unicam_device(struct v4l2_device *v4l2_dev)
+{
+ return container_of(v4l2_dev, struct unicam_device, v4l2_dev);
+}
+
+static inline struct unicam_device *
+sd_to_unicam_device(struct v4l2_subdev *sd)
+{
+ return container_of(sd, struct unicam_device, sd);
+}
+
+static inline bool is_metadata_node(struct unicam_node *node)
+{
+ return node->video_dev.device_caps & V4L2_CAP_META_CAPTURE;
+}
+
+static inline bool is_image_node(struct unicam_node *node)
+{
+ return node->video_dev.device_caps & V4L2_CAP_VIDEO_CAPTURE;
+}
+
+/* Hardware access */
+static inline void clk_write(struct unicam_device *dev, u32 val)
+{
+ writel(val | 0x5a000000, dev->clk_gate_base);
+}
+
+static inline u32 reg_read(struct unicam_device *dev, u32 offset)
+{
+ return readl(dev->base + offset);
+}
+
+static inline void reg_write(struct unicam_device *dev, u32 offset, u32 val)
+{
+ writel(val, dev->base + offset);
+}
+
+static inline int get_field(u32 value, u32 mask)
+{
+ return (value & mask) >> __ffs(mask);
+}
+
+static inline void set_field(u32 *valp, u32 field, u32 mask)
+{
+ u32 val = *valp;
+
+ val &= ~mask;
+ val |= (field << __ffs(mask)) & mask;
+ *valp = val;
+}
+
+static inline u32 reg_read_field(struct unicam_device *dev, u32 offset,
+ u32 mask)
+{
+ return get_field(reg_read(dev, offset), mask);
+}
+
+static inline void reg_write_field(struct unicam_device *dev, u32 offset,
+ u32 field, u32 mask)
+{
+ u32 val = reg_read(dev, offset);
+
+ set_field(&val, field, mask);
+ reg_write(dev, offset, val);
+}
+
+/* Power management functions */
+static inline int unicam_runtime_get(struct unicam_device *dev)
+{
+ return pm_runtime_get_sync(&dev->pdev->dev);
+}
+
+static inline void unicam_runtime_put(struct unicam_device *dev)
+{
+ pm_runtime_put_sync(&dev->pdev->dev);
+}
+
+/* Format setup functions */
+static const struct unicam_fmt *find_format_by_code(u32 code)
+{
+ unsigned int i;
+
+ for (i = 0; i < ARRAY_SIZE(formats); i++) {
+ if (formats[i].code == code)
+ return &formats[i];
+ }
+
+ return NULL;
+}
+
+static const struct unicam_fmt *find_format_by_fourcc(u32 fourcc)
+{
+ unsigned int i;
+
+ for (i = 0; i < ARRAY_SIZE(formats); ++i) {
+ if (formats[i].fourcc == fourcc)
+ return &formats[i];
+ }
+
+ return NULL;
+}
+
+static unsigned int bytes_per_line(u32 width, const struct unicam_fmt *fmt,
+ u32 v4l2_fourcc)
+{
+ if (v4l2_fourcc == fmt->repacked_fourcc)
+ /* Repacking always goes to 16bpp */
+ return ALIGN(width << 1, BPL_ALIGNMENT);
+ else
+ return ALIGN((width * fmt->depth) >> 3, BPL_ALIGNMENT);
+}
+
+static int unicam_calc_format_size_bpl(struct unicam_device *dev,
+ const struct unicam_fmt *fmt,
+ struct v4l2_format *f)
+{
+ unsigned int min_bytesperline;
+
+ v4l_bound_align_image(&f->fmt.pix.width, MIN_WIDTH, MAX_WIDTH, 2,
+ &f->fmt.pix.height, MIN_HEIGHT, MAX_HEIGHT, 0,
+ 0);
+
+ min_bytesperline = bytes_per_line(f->fmt.pix.width, fmt,
+ f->fmt.pix.pixelformat);
+
+ if (f->fmt.pix.bytesperline > min_bytesperline &&
+ f->fmt.pix.bytesperline <= MAX_BYTESPERLINE)
+ f->fmt.pix.bytesperline = ALIGN(f->fmt.pix.bytesperline,
+ BPL_ALIGNMENT);
+ else
+ f->fmt.pix.bytesperline = min_bytesperline;
+
+ f->fmt.pix.sizeimage = f->fmt.pix.height * f->fmt.pix.bytesperline;
+
+ unicam_dbg(3, dev, "%s: fourcc: %08X size: %dx%d bpl:%d img_size:%d\n",
+ __func__,
+ f->fmt.pix.pixelformat,
+ f->fmt.pix.width, f->fmt.pix.height,
+ f->fmt.pix.bytesperline, f->fmt.pix.sizeimage);
+
+ return 0;
+}
+
+static void unicam_wr_dma_addr(struct unicam_device *dev, dma_addr_t dmaaddr,
+ unsigned int buffer_size, int node_id)
+{
+ dma_addr_t endaddr = dmaaddr + buffer_size;
+
+ if (node_id == IMAGE_NODE) {
+ reg_write(dev, UNICAM_IBSA0, dmaaddr);
+ reg_write(dev, UNICAM_IBEA0, endaddr);
+ } else {
+ reg_write(dev, UNICAM_DBSA0, dmaaddr);
+ reg_write(dev, UNICAM_DBEA0, endaddr);
+ }
+}
+
+static unsigned int unicam_get_lines_done(struct unicam_device *dev)
+{
+ dma_addr_t start_addr, cur_addr;
+ unsigned int stride = dev->node[IMAGE_NODE].v_fmt.fmt.pix.bytesperline;
+ struct unicam_buffer *frm = dev->node[IMAGE_NODE].cur_frm;
+
+ if (!frm)
+ return 0;
+
+ start_addr = vb2_dma_contig_plane_dma_addr(&frm->vb.vb2_buf, 0);
+ cur_addr = reg_read(dev, UNICAM_IBWP);
+ return (unsigned int)(cur_addr - start_addr) / stride;
+}
+
+static void unicam_schedule_next_buffer(struct unicam_node *node)
+{
+ struct unicam_device *dev = node->dev;
+ struct unicam_buffer *buf;
+ unsigned int size;
+ dma_addr_t addr;
+
+ buf = list_first_entry(&node->dma_queue, struct unicam_buffer, list);
+ node->next_frm = buf;
+ list_del(&buf->list);
+
+ addr = vb2_dma_contig_plane_dma_addr(&buf->vb.vb2_buf, 0);
+ if (is_image_node(node)) {
+ size = node->v_fmt.fmt.pix.sizeimage;
+ unicam_wr_dma_addr(dev, addr, size, IMAGE_NODE);
+ } else {
+ size = node->v_fmt.fmt.meta.buffersize;
+ unicam_wr_dma_addr(dev, addr, size, METADATA_NODE);
+ }
+}
+
+static void unicam_schedule_dummy_buffer(struct unicam_node *node)
+{
+ struct unicam_device *dev = node->dev;
+ int node_id = is_image_node(node) ? IMAGE_NODE : METADATA_NODE;
+
+ unicam_dbg(3, dev, "Scheduling dummy buffer for node %d\n", node_id);
+
+ unicam_wr_dma_addr(dev, node->dummy_buf_dma_addr, DUMMY_BUF_SIZE,
+ node_id);
+ node->next_frm = NULL;
+}
+
+static void unicam_process_buffer_complete(struct unicam_node *node,
+ unsigned int sequence)
+{
+ node->cur_frm->vb.field = node->m_fmt.field;
+ node->cur_frm->vb.sequence = sequence;
+
+ vb2_buffer_done(&node->cur_frm->vb.vb2_buf, VB2_BUF_STATE_DONE);
+}
+
+static void unicam_queue_event_sof(struct unicam_device *unicam)
+{
+ struct v4l2_event event = {
+ .type = V4L2_EVENT_FRAME_SYNC,
+ .u.frame_sync.frame_sequence = unicam->sequence,
+ };
+
+ v4l2_event_queue(&unicam->node[IMAGE_NODE].video_dev, &event);
+}
+
+/*
+ * unicam_isr : ISR handler for unicam capture
+ * @irq: irq number
+ * @dev_id: dev_id ptr
+ *
+ * It changes status of the captured buffer, takes next buffer from the queue
+ * and sets its address in unicam registers
+ */
+static irqreturn_t unicam_isr(int irq, void *dev)
+{
+ struct unicam_device *unicam = dev;
+ unsigned int lines_done = unicam_get_lines_done(dev);
+ unsigned int sequence = unicam->sequence;
+ unsigned int i;
+ u32 ista, sta;
+ bool fe;
+ u64 ts;
+
+ sta = reg_read(unicam, UNICAM_STA);
+ /* Write value back to clear the interrupts */
+ reg_write(unicam, UNICAM_STA, sta);
+
+ ista = reg_read(unicam, UNICAM_ISTA);
+ /* Write value back to clear the interrupts */
+ reg_write(unicam, UNICAM_ISTA, ista);
+
+ unicam_dbg(3, unicam, "ISR: ISTA: 0x%X, STA: 0x%X, sequence %d, lines done %d",
+ ista, sta, sequence, lines_done);
+
+ if (!(sta & (UNICAM_IS | UNICAM_PI0)))
+ return IRQ_HANDLED;
+
+ /*
+ * Look for either the Frame End interrupt or the Packet Capture status
+ * to signal a frame end.
+ */
+ fe = (ista & UNICAM_FEI || sta & UNICAM_PI0);
+
+ /*
+ * We must run the frame end handler first. If we have a valid next_frm
+ * and we get a simultaneout FE + FS interrupt, running the FS handler
+ * first would null out the next_frm ptr and we would have lost the
+ * buffer forever.
+ */
+ if (fe) {
+ /*
+ * Ensure we have swapped buffers already as we can't
+ * stop the peripheral. If no buffer is available, use a
+ * dummy buffer to dump out frames until we get a new buffer
+ * to use.
+ */
+ for (i = 0; i < ARRAY_SIZE(unicam->node); i++) {
+ if (!unicam->node[i].streaming)
+ continue;
+
+ /*
+ * If cur_frm == next_frm, it means we have not had
+ * a chance to swap buffers, likely due to having
+ * multiple interrupts occurring simultaneously (like FE
+ * + FS + LS). In this case, we cannot signal the buffer
+ * as complete, as the HW will reuse that buffer.
+ */
+ if (unicam->node[i].cur_frm &&
+ unicam->node[i].cur_frm != unicam->node[i].next_frm)
+ unicam_process_buffer_complete(&unicam->node[i],
+ sequence);
+ unicam->node[i].cur_frm = unicam->node[i].next_frm;
+ }
+ unicam->sequence++;
+ }
+
+ if (ista & UNICAM_FSI) {
+ /*
+ * Timestamp is to be when the first data byte was captured,
+ * aka frame start.
+ */
+ ts = ktime_get_ns();
+ for (i = 0; i < ARRAY_SIZE(unicam->node); i++) {
+ if (!unicam->node[i].streaming)
+ continue;
+
+ if (unicam->node[i].cur_frm)
+ unicam->node[i].cur_frm->vb.vb2_buf.timestamp =
+ ts;
+ else
+ unicam_dbg(2, unicam, "ISR: [%d] Dropping frame, buffer not available at FS\n",
+ i);
+ /*
+ * Set the next frame output to go to a dummy frame
+ * if we have not managed to obtain another frame
+ * from the queue.
+ */
+ unicam_schedule_dummy_buffer(&unicam->node[i]);
+ }
+
+ unicam_queue_event_sof(unicam);
+ }
+
+ /*
+ * Cannot swap buffer at frame end, there may be a race condition
+ * where the HW does not actually swap it if the new frame has
+ * already started.
+ */
+ if (ista & (UNICAM_FSI | UNICAM_LCI) && !fe) {
+ for (i = 0; i < ARRAY_SIZE(unicam->node); i++) {
+ if (!unicam->node[i].streaming)
+ continue;
+
+ spin_lock(&unicam->node[i].dma_queue_lock);
+ if (!list_empty(&unicam->node[i].dma_queue) &&
+ !unicam->node[i].next_frm)
+ unicam_schedule_next_buffer(&unicam->node[i]);
+ spin_unlock(&unicam->node[i].dma_queue_lock);
+ }
+ }
+
+ if (reg_read(unicam, UNICAM_ICTL) & UNICAM_FCM) {
+ /* Switch out of trigger mode if selected */
+ reg_write_field(unicam, UNICAM_ICTL, 1, UNICAM_TFC);
+ reg_write_field(unicam, UNICAM_ICTL, 0, UNICAM_FCM);
+ }
+ return IRQ_HANDLED;
+}
+
+/* V4L2 Common IOCTLs */
+static int unicam_querycap(struct file *file, void *priv,
+ struct v4l2_capability *cap)
+{
+ struct unicam_node *node = video_drvdata(file);
+ struct unicam_device *dev = node->dev;
+
+ strscpy(cap->driver, UNICAM_MODULE_NAME, sizeof(cap->driver));
+ strscpy(cap->card, UNICAM_MODULE_NAME, sizeof(cap->card));
+
+ snprintf(cap->bus_info, sizeof(cap->bus_info),
+ "platform:%s", dev_name(&dev->pdev->dev));
+
+ cap->capabilities |= V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_META_CAPTURE;
+
+ return 0;
+}
+
+static int unicam_log_status(struct file *file, void *fh)
+{
+ struct unicam_node *node = video_drvdata(file);
+ struct unicam_device *dev = node->dev;
+ u32 reg;
+
+ /* status for sub devices */
+ v4l2_device_call_all(&dev->v4l2_dev, 0, core, log_status);
+
+ unicam_info(dev, "-----Receiver status-----\n");
+ unicam_info(dev, "V4L2 width/height: %ux%u\n",
+ node->v_fmt.fmt.pix.width, node->v_fmt.fmt.pix.height);
+ unicam_info(dev, "Mediabus format: %08x\n", node->fmt->code);
+ unicam_info(dev, "V4L2 format: %08x\n",
+ node->v_fmt.fmt.pix.pixelformat);
+ reg = reg_read(dev, UNICAM_IPIPE);
+ unicam_info(dev, "Unpacking/packing: %u / %u\n",
+ get_field(reg, UNICAM_PUM_MASK),
+ get_field(reg, UNICAM_PPM_MASK));
+ unicam_info(dev, "----Live data----\n");
+ unicam_info(dev, "Programmed stride: %4u\n",
+ reg_read(dev, UNICAM_IBLS));
+ unicam_info(dev, "Detected resolution: %ux%u\n",
+ reg_read(dev, UNICAM_IHSTA),
+ reg_read(dev, UNICAM_IVSTA));
+ unicam_info(dev, "Write pointer: %08x\n",
+ reg_read(dev, UNICAM_IBWP));
+
+ return 0;
+}
+
+static int unicam_subscribe_event(struct v4l2_fh *fh,
+ const struct v4l2_event_subscription *sub)
+{
+ switch (sub->type) {
+ case V4L2_EVENT_FRAME_SYNC:
+ return v4l2_event_subscribe(fh, sub, 2, NULL);
+ case V4L2_EVENT_SOURCE_CHANGE:
+ return v4l2_event_subscribe(fh, sub, 4, NULL);
+ }
+
+ return v4l2_ctrl_subscribe_event(fh, sub);
+}
+
+static void unicam_notify(struct v4l2_subdev *sd,
+ unsigned int notification, void *arg)
+{
+ struct unicam_device *dev = to_unicam_device(sd->v4l2_dev);
+
+ switch (notification) {
+ case V4L2_DEVICE_NOTIFY_EVENT:
+ v4l2_event_queue(&dev->node[IMAGE_NODE].video_dev, arg);
+ break;
+ default:
+ break;
+ }
+}
+
+/* V4L2 Media Controller Centric IOCTLs */
+
+static int unicam_mc_enum_fmt_vid_cap(struct file *file, void *priv,
+ struct v4l2_fmtdesc *f)
+{
+ int i, j;
+
+ for (i = 0, j = 0; i < ARRAY_SIZE(formats); i++) {
+ if (f->mbus_code && formats[i].code != f->mbus_code)
+ continue;
+ if (formats[i].mc_skip || formats[i].metadata_fmt)
+ continue;
+
+ if (formats[i].fourcc) {
+ if (j == f->index) {
+ f->pixelformat = formats[i].fourcc;
+ f->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
+ return 0;
+ }
+ j++;
+ }
+ if (formats[i].repacked_fourcc) {
+ if (j == f->index) {
+ f->pixelformat = formats[i].repacked_fourcc;
+ f->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
+ return 0;
+ }
+ j++;
+ }
+ }
+
+ return -EINVAL;
+}
+
+static int unicam_mc_g_fmt_vid_cap(struct file *file, void *priv,
+ struct v4l2_format *f)
+{
+ struct unicam_node *node = video_drvdata(file);
+
+ if (!is_image_node(node))
+ return -EINVAL;
+
+ *f = node->v_fmt;
+
+ return 0;
+}
+
+static void unicam_mc_try_fmt(struct unicam_node *node, struct v4l2_format *f,
+ const struct unicam_fmt **ret_fmt)
+{
+ struct v4l2_pix_format *v4l2_format = &f->fmt.pix;
+ struct unicam_device *dev = node->dev;
+ const struct unicam_fmt *fmt;
+ int is_rgb;
+
+ /*
+ * Default to the first format if the requested pixel format code isn't
+ * supported.
+ */
+ fmt = find_format_by_fourcc(v4l2_format->pixelformat);
+ if (!fmt) {
+ fmt = &formats[0];
+ v4l2_format->pixelformat = fmt->fourcc;
+ }
+
+ unicam_calc_format_size_bpl(dev, fmt, f);
+
+ if (v4l2_format->field == V4L2_FIELD_ANY)
+ v4l2_format->field = V4L2_FIELD_NONE;
+
+ if (v4l2_format->colorspace >= MAX_COLORSPACE ||
+ !(fmt->valid_colorspaces & (1 << v4l2_format->colorspace))) {
+ v4l2_format->colorspace = __ffs(fmt->valid_colorspaces);
+
+ v4l2_format->xfer_func =
+ V4L2_MAP_XFER_FUNC_DEFAULT(v4l2_format->colorspace);
+ v4l2_format->ycbcr_enc =
+ V4L2_MAP_YCBCR_ENC_DEFAULT(v4l2_format->colorspace);
+ is_rgb = v4l2_format->colorspace == V4L2_COLORSPACE_SRGB;
+ v4l2_format->quantization =
+ V4L2_MAP_QUANTIZATION_DEFAULT(is_rgb,
+ v4l2_format->colorspace,
+ v4l2_format->ycbcr_enc);
+ }
+
+ if (ret_fmt)
+ *ret_fmt = fmt;
+
+ unicam_dbg(3, dev, "%s: %08x %ux%u (bytesperline %u sizeimage %u)\n",
+ __func__, v4l2_format->pixelformat,
+ v4l2_format->width, v4l2_format->height,
+ v4l2_format->bytesperline, v4l2_format->sizeimage);
+}
+
+static int unicam_mc_try_fmt_vid_cap(struct file *file, void *priv,
+ struct v4l2_format *f)
+{
+ struct unicam_node *node = video_drvdata(file);
+
+ unicam_mc_try_fmt(node, f, NULL);
+ return 0;
+}
+
+static int unicam_mc_s_fmt_vid_cap(struct file *file, void *priv,
+ struct v4l2_format *f)
+{
+ struct unicam_node *node = video_drvdata(file);
+ struct unicam_device *dev = node->dev;
+ const struct unicam_fmt *fmt;
+
+ if (vb2_is_busy(&node->buffer_queue)) {
+ unicam_dbg(3, dev, "%s device busy\n", __func__);
+ return -EBUSY;
+ }
+
+ unicam_mc_try_fmt(node, f, &fmt);
+
+ node->v_fmt = *f;
+ node->fmt = fmt;
+
+ return 0;
+}
+
+static int unicam_mc_enum_framesizes(struct file *file, void *fh,
+ struct v4l2_frmsizeenum *fsize)
+{
+ struct unicam_node *node = video_drvdata(file);
+ struct unicam_device *dev = node->dev;
+
+ if (fsize->index > 0)
+ return -EINVAL;
+
+ if (!find_format_by_fourcc(fsize->pixel_format)) {
+ unicam_dbg(3, dev, "Invalid pixel format 0x%08x\n",
+ fsize->pixel_format);
+ return -EINVAL;
+ }
+
+ fsize->type = V4L2_FRMSIZE_TYPE_STEPWISE;
+ fsize->stepwise.min_width = MIN_WIDTH;
+ fsize->stepwise.max_width = MAX_WIDTH;
+ fsize->stepwise.step_width = 1;
+ fsize->stepwise.min_height = MIN_HEIGHT;
+ fsize->stepwise.max_height = MAX_HEIGHT;
+ fsize->stepwise.step_height = 1;
+
+ return 0;
+}
+
+static int unicam_mc_enum_fmt_meta_cap(struct file *file, void *priv,
+ struct v4l2_fmtdesc *f)
+{
+ struct unicam_node *node = video_drvdata(file);
+ int i, j;
+
+ if (!is_metadata_node(node))
+ return -EINVAL;
+
+ for (i = 0, j = 0; i < ARRAY_SIZE(formats); i++) {
+ if (f->mbus_code && formats[i].code != f->mbus_code)
+ continue;
+ if (!formats[i].metadata_fmt)
+ continue;
+
+ if (formats[i].fourcc) {
+ if (j == f->index) {
+ f->pixelformat = formats[i].fourcc;
+ f->type = V4L2_BUF_TYPE_META_CAPTURE;
+ return 0;
+ }
+ j++;
+ }
+ }
+
+ return -EINVAL;
+}
+
+static int unicam_mc_g_fmt_meta_cap(struct file *file, void *priv,
+ struct v4l2_format *f)
+{
+ struct unicam_node *node = video_drvdata(file);
+
+ if (!is_metadata_node(node))
+ return -EINVAL;
+
+ *f = node->v_fmt;
+
+ return 0;
+}
+
+static int unicam_mc_try_fmt_meta_cap(struct file *file, void *priv,
+ struct v4l2_format *f)
+{
+ struct unicam_node *node = video_drvdata(file);
+
+ if (!is_metadata_node(node))
+ return -EINVAL;
+
+ f->fmt.meta.dataformat = V4L2_META_FMT_8;
+
+ return 0;
+}
+
+static int unicam_mc_s_fmt_meta_cap(struct file *file, void *priv,
+ struct v4l2_format *f)
+{
+ struct unicam_node *node = video_drvdata(file);
+
+ if (!is_metadata_node(node))
+ return -EINVAL;
+
+ unicam_mc_try_fmt_meta_cap(file, priv, f);
+
+ node->v_fmt = *f;
+
+ return 0;
+}
+
+static const struct v4l2_ioctl_ops unicam_mc_ioctl_ops = {
+ .vidioc_querycap = unicam_querycap,
+ .vidioc_enum_fmt_vid_cap = unicam_mc_enum_fmt_vid_cap,
+ .vidioc_g_fmt_vid_cap = unicam_mc_g_fmt_vid_cap,
+ .vidioc_try_fmt_vid_cap = unicam_mc_try_fmt_vid_cap,
+ .vidioc_s_fmt_vid_cap = unicam_mc_s_fmt_vid_cap,
+
+ .vidioc_enum_fmt_meta_cap = unicam_mc_enum_fmt_meta_cap,
+ .vidioc_g_fmt_meta_cap = unicam_mc_g_fmt_meta_cap,
+ .vidioc_try_fmt_meta_cap = unicam_mc_try_fmt_meta_cap,
+ .vidioc_s_fmt_meta_cap = unicam_mc_s_fmt_meta_cap,
+
+ .vidioc_enum_framesizes = unicam_mc_enum_framesizes,
+ .vidioc_reqbufs = vb2_ioctl_reqbufs,
+ .vidioc_create_bufs = vb2_ioctl_create_bufs,
+ .vidioc_prepare_buf = vb2_ioctl_prepare_buf,
+ .vidioc_querybuf = vb2_ioctl_querybuf,
+ .vidioc_qbuf = vb2_ioctl_qbuf,
+ .vidioc_dqbuf = vb2_ioctl_dqbuf,
+ .vidioc_expbuf = vb2_ioctl_expbuf,
+ .vidioc_streamon = vb2_ioctl_streamon,
+ .vidioc_streamoff = vb2_ioctl_streamoff,
+
+ .vidioc_log_status = unicam_log_status,
+ .vidioc_subscribe_event = unicam_subscribe_event,
+ .vidioc_unsubscribe_event = v4l2_event_unsubscribe,
+};
+
+static const struct media_entity_operations unicam_mc_entity_ops = {
+ .link_validate = v4l2_subdev_link_validate,
+ .has_route = v4l2_subdev_has_route,
+};
+
+/* videobuf2 Operations */
+
+static int unicam_queue_setup(struct vb2_queue *vq,
+ unsigned int *nbuffers,
+ unsigned int *nplanes,
+ unsigned int sizes[],
+ struct device *alloc_devs[])
+{
+ struct unicam_node *node = vb2_get_drv_priv(vq);
+ struct unicam_device *dev = node->dev;
+ unsigned int size = is_image_node(node) ?
+ node->v_fmt.fmt.pix.sizeimage :
+ node->v_fmt.fmt.meta.buffersize;
+
+ if (vq->num_buffers + *nbuffers < 3)
+ *nbuffers = 3 - vq->num_buffers;
+
+ if (*nplanes) {
+ if (sizes[0] < size) {
+ unicam_err(dev, "sizes[0] %i < size %u\n", sizes[0],
+ size);
+ return -EINVAL;
+ }
+ size = sizes[0];
+ }
+
+ *nplanes = 1;
+ sizes[0] = size;
+
+ return 0;
+}
+
+static int unicam_buffer_prepare(struct vb2_buffer *vb)
+{
+ struct unicam_node *node = vb2_get_drv_priv(vb->vb2_queue);
+ struct unicam_device *dev = node->dev;
+ struct unicam_buffer *buf = to_unicam_buffer(vb);
+ unsigned long size;
+
+ if (WARN_ON(!node->fmt))
+ return -EINVAL;
+
+ size = is_image_node(node) ? node->v_fmt.fmt.pix.sizeimage :
+ node->v_fmt.fmt.meta.buffersize;
+ if (vb2_plane_size(vb, 0) < size) {
+ unicam_err(dev, "data will not fit into plane (%lu < %lu)\n",
+ vb2_plane_size(vb, 0), size);
+ return -EINVAL;
+ }
+
+ vb2_set_plane_payload(&buf->vb.vb2_buf, 0, size);
+ return 0;
+}
+
+static void unicam_buffer_queue(struct vb2_buffer *vb)
+{
+ struct unicam_node *node = vb2_get_drv_priv(vb->vb2_queue);
+ struct unicam_buffer *buf = to_unicam_buffer(vb);
+ unsigned long flags;
+
+ spin_lock_irqsave(&node->dma_queue_lock, flags);
+ list_add_tail(&buf->list, &node->dma_queue);
+ spin_unlock_irqrestore(&node->dma_queue_lock, flags);
+}
+
+static void unicam_set_packing_config(struct unicam_device *dev)
+{
+ u32 pack, unpack;
+ u32 val;
+
+ if (dev->node[IMAGE_NODE].v_fmt.fmt.pix.pixelformat ==
+ dev->node[IMAGE_NODE].fmt->fourcc) {
+ unpack = UNICAM_PUM_NONE;
+ pack = UNICAM_PPM_NONE;
+ } else {
+ switch (dev->node[IMAGE_NODE].fmt->depth) {
+ case 8:
+ unpack = UNICAM_PUM_UNPACK8;
+ break;
+ case 10:
+ unpack = UNICAM_PUM_UNPACK10;
+ break;
+ case 12:
+ unpack = UNICAM_PUM_UNPACK12;
+ break;
+ case 14:
+ unpack = UNICAM_PUM_UNPACK14;
+ break;
+ case 16:
+ unpack = UNICAM_PUM_UNPACK16;
+ break;
+ default:
+ unpack = UNICAM_PUM_NONE;
+ break;
+ }
+
+ /* Repacking is always to 16bpp */
+ pack = UNICAM_PPM_PACK16;
+ }
+
+ val = 0;
+ set_field(&val, unpack, UNICAM_PUM_MASK);
+ set_field(&val, pack, UNICAM_PPM_MASK);
+ reg_write(dev, UNICAM_IPIPE, val);
+}
+
+static void unicam_cfg_image_id(struct unicam_device *dev)
+{
+ if (dev->bus_type == V4L2_MBUS_CSI2_DPHY) {
+ /* CSI2 mode, hardcode VC 0 for now. */
+ reg_write(dev, UNICAM_IDI0,
+ (0 << 6) | dev->node[IMAGE_NODE].fmt->csi_dt);
+ } else {
+ /* CCP2 mode */
+ reg_write(dev, UNICAM_IDI0,
+ 0x80 | dev->node[IMAGE_NODE].fmt->csi_dt);
+ }
+}
+
+static void unicam_enable_ed(struct unicam_device *dev)
+{
+ u32 val = reg_read(dev, UNICAM_DCS);
+
+ set_field(&val, 2, UNICAM_EDL_MASK);
+ /* Do not wrap at the end of the embedded data buffer */
+ set_field(&val, 0, UNICAM_DBOB);
+
+ reg_write(dev, UNICAM_DCS, val);
+}
+
+static void unicam_start_rx(struct unicam_device *dev, dma_addr_t *addr)
+{
+ int line_int_freq = dev->node[IMAGE_NODE].v_fmt.fmt.pix.height >> 2;
+ unsigned int size, i;
+ u32 val;
+
+ if (line_int_freq < 128)
+ line_int_freq = 128;
+
+ /* Enable lane clocks */
+ val = 1;
+ for (i = 0; i < dev->active_data_lanes; i++)
+ val = val << 2 | 1;
+ clk_write(dev, val);
+
+ /* Basic init */
+ reg_write(dev, UNICAM_CTRL, UNICAM_MEM);
+
+ /* Enable analogue control, and leave in reset. */
+ val = UNICAM_AR;
+ set_field(&val, 7, UNICAM_CTATADJ_MASK);
+ set_field(&val, 7, UNICAM_PTATADJ_MASK);
+ reg_write(dev, UNICAM_ANA, val);
+ usleep_range(1000, 2000);
+
+ /* Come out of reset */
+ reg_write_field(dev, UNICAM_ANA, 0, UNICAM_AR);
+
+ /* Peripheral reset */
+ reg_write_field(dev, UNICAM_CTRL, 1, UNICAM_CPR);
+ reg_write_field(dev, UNICAM_CTRL, 0, UNICAM_CPR);
+
+ reg_write_field(dev, UNICAM_CTRL, 0, UNICAM_CPE);
+
+ /* Enable Rx control. */
+ val = reg_read(dev, UNICAM_CTRL);
+ if (dev->bus_type == V4L2_MBUS_CSI2_DPHY) {
+ set_field(&val, UNICAM_CPM_CSI2, UNICAM_CPM_MASK);
+ set_field(&val, UNICAM_DCM_STROBE, UNICAM_DCM_MASK);
+ } else {
+ set_field(&val, UNICAM_CPM_CCP2, UNICAM_CPM_MASK);
+ set_field(&val, dev->bus_flags, UNICAM_DCM_MASK);
+ }
+ /* Packet framer timeout */
+ set_field(&val, 0xf, UNICAM_PFT_MASK);
+ set_field(&val, 128, UNICAM_OET_MASK);
+ reg_write(dev, UNICAM_CTRL, val);
+
+ reg_write(dev, UNICAM_IHWIN, 0);
+ reg_write(dev, UNICAM_IVWIN, 0);
+
+ /* AXI bus access QoS setup */
+ val = reg_read(dev, UNICAM_PRI);
+ set_field(&val, 0, UNICAM_BL_MASK);
+ set_field(&val, 0, UNICAM_BS_MASK);
+ set_field(&val, 0xe, UNICAM_PP_MASK);
+ set_field(&val, 8, UNICAM_NP_MASK);
+ set_field(&val, 2, UNICAM_PT_MASK);
+ set_field(&val, 1, UNICAM_PE);
+ reg_write(dev, UNICAM_PRI, val);
+
+ reg_write_field(dev, UNICAM_ANA, 0, UNICAM_DDL);
+
+ /* Always start in trigger frame capture mode (UNICAM_FCM set) */
+ val = UNICAM_FSIE | UNICAM_FEIE | UNICAM_FCM | UNICAM_IBOB;
+ set_field(&val, line_int_freq, UNICAM_LCIE_MASK);
+ reg_write(dev, UNICAM_ICTL, val);
+ reg_write(dev, UNICAM_STA, UNICAM_STA_MASK_ALL);
+ reg_write(dev, UNICAM_ISTA, UNICAM_ISTA_MASK_ALL);
+
+ /* tclk_term_en */
+ reg_write_field(dev, UNICAM_CLT, 2, UNICAM_CLT1_MASK);
+ /* tclk_settle */
+ reg_write_field(dev, UNICAM_CLT, 6, UNICAM_CLT2_MASK);
+ /* td_term_en */
+ reg_write_field(dev, UNICAM_DLT, 2, UNICAM_DLT1_MASK);
+ /* ths_settle */
+ reg_write_field(dev, UNICAM_DLT, 6, UNICAM_DLT2_MASK);
+ /* trx_enable */
+ reg_write_field(dev, UNICAM_DLT, 0, UNICAM_DLT3_MASK);
+
+ reg_write_field(dev, UNICAM_CTRL, 0, UNICAM_SOE);
+
+ /* Packet compare setup - required to avoid missing frame ends */
+ val = 0;
+ set_field(&val, 1, UNICAM_PCE);
+ set_field(&val, 1, UNICAM_GI);
+ set_field(&val, 1, UNICAM_CPH);
+ set_field(&val, 0, UNICAM_PCVC_MASK);
+ set_field(&val, 1, UNICAM_PCDT_MASK);
+ reg_write(dev, UNICAM_CMP0, val);
+
+ /* Enable clock lane and set up terminations */
+ val = 0;
+ if (dev->bus_type == V4L2_MBUS_CSI2_DPHY) {
+ /* CSI2 */
+ set_field(&val, 1, UNICAM_CLE);
+ set_field(&val, 1, UNICAM_CLLPE);
+ if (dev->bus_flags & V4L2_MBUS_CSI2_CONTINUOUS_CLOCK) {
+ set_field(&val, 1, UNICAM_CLTRE);
+ set_field(&val, 1, UNICAM_CLHSE);
+ }
+ } else {
+ /* CCP2 */
+ set_field(&val, 1, UNICAM_CLE);
+ set_field(&val, 1, UNICAM_CLHSE);
+ set_field(&val, 1, UNICAM_CLTRE);
+ }
+ reg_write(dev, UNICAM_CLK, val);
+
+ /*
+ * Enable required data lanes with appropriate terminations.
+ * The same value needs to be written to UNICAM_DATn registers for
+ * the active lanes, and 0 for inactive ones.
+ */
+ val = 0;
+ if (dev->bus_type == V4L2_MBUS_CSI2_DPHY) {
+ /* CSI2 */
+ set_field(&val, 1, UNICAM_DLE);
+ set_field(&val, 1, UNICAM_DLLPE);
+ if (dev->bus_flags & V4L2_MBUS_CSI2_CONTINUOUS_CLOCK) {
+ set_field(&val, 1, UNICAM_DLTRE);
+ set_field(&val, 1, UNICAM_DLHSE);
+ }
+ } else {
+ /* CCP2 */
+ set_field(&val, 1, UNICAM_DLE);
+ set_field(&val, 1, UNICAM_DLHSE);
+ set_field(&val, 1, UNICAM_DLTRE);
+ }
+ reg_write(dev, UNICAM_DAT0, val);
+
+ if (dev->active_data_lanes == 1)
+ val = 0;
+ reg_write(dev, UNICAM_DAT1, val);
+
+ if (dev->max_data_lanes > 2) {
+ /*
+ * Registers UNICAM_DAT2 and UNICAM_DAT3 only valid if the
+ * instance supports more than 2 data lanes.
+ */
+ if (dev->active_data_lanes == 2)
+ val = 0;
+ reg_write(dev, UNICAM_DAT2, val);
+
+ if (dev->active_data_lanes == 3)
+ val = 0;
+ reg_write(dev, UNICAM_DAT3, val);
+ }
+
+ reg_write(dev, UNICAM_IBLS,
+ dev->node[IMAGE_NODE].v_fmt.fmt.pix.bytesperline);
+ size = dev->node[IMAGE_NODE].v_fmt.fmt.pix.sizeimage;
+ unicam_wr_dma_addr(dev, addr[IMAGE_NODE], size, IMAGE_NODE);
+ unicam_set_packing_config(dev);
+ unicam_cfg_image_id(dev);
+
+ val = reg_read(dev, UNICAM_MISC);
+ set_field(&val, 1, UNICAM_FL0);
+ set_field(&val, 1, UNICAM_FL1);
+ reg_write(dev, UNICAM_MISC, val);
+
+ if (dev->node[METADATA_NODE].streaming && dev->sensor_embedded_data) {
+ unicam_dbg(3, dev, "enable metadata dma\n");
+ size = dev->node[METADATA_NODE].v_fmt.fmt.meta.buffersize;
+ unicam_enable_ed(dev);
+ unicam_wr_dma_addr(dev, addr[METADATA_NODE], size, METADATA_NODE);
+ }
+
+ /* Enable peripheral */
+ reg_write_field(dev, UNICAM_CTRL, 1, UNICAM_CPE);
+
+ /* Load image pointers */
+ reg_write_field(dev, UNICAM_ICTL, 1, UNICAM_LIP_MASK);
+
+ /* Load embedded data buffer pointers if needed */
+ if (dev->node[METADATA_NODE].streaming && dev->sensor_embedded_data)
+ reg_write_field(dev, UNICAM_DCS, 1, UNICAM_LDP);
+
+ /*
+ * Enable trigger only for the first frame to
+ * sync correctly to the FS from the source.
+ */
+ reg_write_field(dev, UNICAM_ICTL, 1, UNICAM_TFC);
+}
+
+static void unicam_disable(struct unicam_device *dev)
+{
+ /* Analogue lane control disable */
+ reg_write_field(dev, UNICAM_ANA, 1, UNICAM_DDL);
+
+ /* Stop the output engine */
+ reg_write_field(dev, UNICAM_CTRL, 1, UNICAM_SOE);
+
+ /* Disable the data lanes. */
+ reg_write(dev, UNICAM_DAT0, 0);
+ reg_write(dev, UNICAM_DAT1, 0);
+
+ if (dev->max_data_lanes > 2) {
+ reg_write(dev, UNICAM_DAT2, 0);
+ reg_write(dev, UNICAM_DAT3, 0);
+ }
+
+ /* Peripheral reset */
+ reg_write_field(dev, UNICAM_CTRL, 1, UNICAM_CPR);
+ usleep_range(50, 100);
+ reg_write_field(dev, UNICAM_CTRL, 0, UNICAM_CPR);
+
+ /* Disable peripheral */
+ reg_write_field(dev, UNICAM_CTRL, 0, UNICAM_CPE);
+
+ /* Clear ED setup */
+ reg_write(dev, UNICAM_DCS, 0);
+
+ /* Disable all lane clocks */
+ clk_write(dev, 0);
+}
+
+static void unicam_return_buffers(struct unicam_node *node,
+ enum vb2_buffer_state state)
+{
+ struct unicam_buffer *buf, *tmp;
+ unsigned long flags;
+
+ spin_lock_irqsave(&node->dma_queue_lock, flags);
+ list_for_each_entry_safe(buf, tmp, &node->dma_queue, list) {
+ list_del(&buf->list);
+ vb2_buffer_done(&buf->vb.vb2_buf, state);
+ }
+
+ if (node->cur_frm)
+ vb2_buffer_done(&node->cur_frm->vb.vb2_buf,
+ state);
+ if (node->next_frm && node->cur_frm != node->next_frm)
+ vb2_buffer_done(&node->next_frm->vb.vb2_buf,
+ state);
+
+ node->cur_frm = NULL;
+ node->next_frm = NULL;
+ spin_unlock_irqrestore(&node->dma_queue_lock, flags);
+}
+
+static int unicam_video_check_format(struct unicam_node *node)
+{
+ const struct v4l2_mbus_framefmt *format;
+ struct media_pad *remote_pad;
+ struct v4l2_subdev_state *state;
+ int ret = 0;
+
+ remote_pad = media_entity_remote_pad(&node->pad);
+ if (!remote_pad)
+ return -ENODEV;
+
+ state = v4l2_subdev_lock_active_state(node->dev->sensor);
+
+ format = v4l2_state_get_stream_format(state,
+ remote_pad->index, 0);
+ if (!format) {
+ ret = -EINVAL;
+ goto out;
+ }
+
+ if (node->fmt->code != format->code ||
+ node->v_fmt.fmt.pix.height != format->height ||
+ node->v_fmt.fmt.pix.width != format->width ||
+ node->v_fmt.fmt.pix.field != format->field) {
+ ret = -EPIPE;
+ goto out;
+ }
+
+out:
+ v4l2_subdev_unlock_state(state);
+
+ return ret;
+}
+
+static int unicam_start_streaming(struct vb2_queue *vq, unsigned int count)
+{
+ struct unicam_node *node = vb2_get_drv_priv(vq);
+ struct unicam_device *dev = node->dev;
+ dma_addr_t buffer_addr[MAX_NODES] = { 0 };
+ struct unicam_buffer *buf;
+ unsigned long flags;
+ unsigned int i;
+ int ret;
+
+ node->streaming = true;
+
+ dev->sequence = 0;
+ ret = unicam_runtime_get(dev);
+ if (ret < 0) {
+ unicam_dbg(3, dev, "unicam_runtime_get failed\n");
+ goto err_streaming;
+ }
+
+ ret = media_pipeline_start(node->video_dev.entity.pads, &node->pipe);
+ if (ret < 0) {
+ unicam_err(dev, "Failed to start media pipeline: %d\n", ret);
+ goto err_pm_put;
+ }
+
+ dev->active_data_lanes = dev->max_data_lanes;
+
+ unicam_video_check_format(node);
+
+ unicam_dbg(1, dev, "Running with %u data lanes\n",
+ dev->active_data_lanes);
+
+ ret = clk_set_min_rate(dev->vpu_clock, MIN_VPU_CLOCK_RATE);
+ if (ret) {
+ unicam_err(dev, "failed to set up VPU clock\n");
+ goto error_pipeline;
+ }
+
+ ret = clk_prepare_enable(dev->vpu_clock);
+ if (ret) {
+ unicam_err(dev, "Failed to enable VPU clock: %d\n", ret);
+ goto error_pipeline;
+ }
+
+ ret = clk_set_rate(dev->clock, 100 * 1000 * 1000);
+ if (ret) {
+ unicam_err(dev, "failed to set up CSI clock\n");
+ goto err_vpu_clock;
+ }
+
+ ret = clk_prepare_enable(dev->clock);
+ if (ret) {
+ unicam_err(dev, "Failed to enable CSI clock: %d\n", ret);
+ goto err_vpu_clock;
+ }
+
+ unicam_dbg(3, dev, "node %s\n", node->video_dev.name);
+
+ spin_lock_irqsave(&node->dma_queue_lock, flags);
+ buf = list_first_entry(&node->dma_queue,
+ struct unicam_buffer, list);
+ node->cur_frm = buf;
+ node->next_frm = buf;
+ list_del(&buf->list);
+ spin_unlock_irqrestore(&node->dma_queue_lock, flags);
+
+ buffer_addr[i] =
+ vb2_dma_contig_plane_dma_addr(&buf->vb.vb2_buf, 0);
+
+ unicam_start_rx(dev, buffer_addr);
+
+ ret = v4l2_subdev_call(&dev->sd, video, s_stream, 1);
+ if (ret < 0) {
+ unicam_err(dev, "stream on failed in subdev\n");
+ goto err_disable_unicam;
+ }
+
+ dev->clocks_enabled = true;
+ return 0;
+
+err_disable_unicam:
+ unicam_disable(dev);
+ clk_disable_unprepare(dev->clock);
+err_vpu_clock:
+ if (clk_set_min_rate(dev->vpu_clock, 0))
+ unicam_err(dev, "failed to reset the VPU clock\n");
+ clk_disable_unprepare(dev->vpu_clock);
+error_pipeline:
+ media_pipeline_stop(node->video_dev.entity.pads);
+err_pm_put:
+ unicam_runtime_put(dev);
+err_streaming:
+ unicam_return_buffers(node, VB2_BUF_STATE_QUEUED);
+ node->streaming = false;
+
+ return ret;
+}
+
+static void unicam_stop_streaming(struct vb2_queue *vq)
+{
+ struct unicam_node *node = vb2_get_drv_priv(vq);
+ struct unicam_device *dev = node->dev;
+
+ node->streaming = false;
+ /*
+ * Stop streaming the sensor and disable the peripheral.
+ * We cannot continue streaming embedded data with the
+ * image pad disabled.
+ */
+ if (v4l2_subdev_call(dev->sensor, video, s_stream, 0) < 0)
+ unicam_err(dev, "stream off failed in subdev\n");
+
+ unicam_disable(dev);
+
+ media_pipeline_stop(node->video_dev.entity.pads);
+
+ if (dev->clocks_enabled) {
+ if (clk_set_min_rate(dev->vpu_clock, 0))
+ unicam_err(dev, "failed to reset the VPU clock\n");
+ clk_disable_unprepare(dev->vpu_clock);
+ clk_disable_unprepare(dev->clock);
+ dev->clocks_enabled = false;
+ }
+ unicam_runtime_put(dev);
+
+ if (is_metadata_node(node)) {
+ /*
+ * Allow the hardware to spin in the dummy buffer.
+ * This is only really needed if the embedded data pad is
+ * disabled before the image pad.
+ */
+ unicam_wr_dma_addr(dev, node->dummy_buf_dma_addr,
+ DUMMY_BUF_SIZE, METADATA_NODE);
+ }
+
+ /* Clear all queued buffers for the node */
+ unicam_return_buffers(node, VB2_BUF_STATE_ERROR);
+}
+
+static const struct vb2_ops unicam_video_qops = {
+ .wait_prepare = vb2_ops_wait_prepare,
+ .wait_finish = vb2_ops_wait_finish,
+ .queue_setup = unicam_queue_setup,
+ .buf_prepare = unicam_buffer_prepare,
+ .buf_queue = unicam_buffer_queue,
+ .start_streaming = unicam_start_streaming,
+ .stop_streaming = unicam_stop_streaming,
+};
+
+/* unicam capture driver file operations */
+static const struct v4l2_file_operations unicam_fops = {
+ .owner = THIS_MODULE,
+ .open = v4l2_fh_open,
+ .release = vb2_fop_release,
+ .poll = vb2_fop_poll,
+ .unlocked_ioctl = video_ioctl2, /* V4L2 ioctl handler */
+ .mmap = vb2_fop_mmap,
+};
+
+static int
+unicam_async_bound(struct v4l2_async_notifier *notifier,
+ struct v4l2_subdev *subdev,
+ struct v4l2_async_subdev *asd)
+{
+ struct unicam_device *unicam = to_unicam_device(notifier->v4l2_dev);
+
+ if (unicam->sensor) {
+ unicam_info(unicam, "Rejecting subdev %s (Already set!!)",
+ subdev->name);
+ return 0;
+ }
+
+ unicam->sensor = subdev;
+ unicam_dbg(1, unicam, "Using sensor %s for capture\n", subdev->name);
+
+ return 0;
+}
+
+static void unicam_release(struct kref *kref)
+{
+ struct unicam_device *unicam =
+ container_of(kref, struct unicam_device, kref);
+
+ v4l2_ctrl_handler_free(&unicam->ctrl_handler);
+ media_device_cleanup(&unicam->mdev);
+
+ if (unicam->sensor_state)
+ __v4l2_subdev_state_free(unicam->sensor_state);
+
+ kfree(unicam);
+}
+
+static void unicam_put(struct unicam_device *unicam)
+{
+ kref_put(&unicam->kref, unicam_release);
+}
+
+static void unicam_get(struct unicam_device *unicam)
+{
+ kref_get(&unicam->kref);
+}
+
+static void unicam_node_release(struct video_device *vdev)
+{
+ struct unicam_node *node = video_get_drvdata(vdev);
+
+ unicam_put(node->dev);
+}
+
+static void unicam_mc_set_default_format(struct unicam_node *node)
+{
+ unicam_dbg(3, node->dev, "Set default format for %s node\n",
+ node->node_id == IMAGE_NODE ? "image" : "metadata");
+
+ if (is_image_node(node)) {
+ struct v4l2_pix_format *pix_fmt = &node->v_fmt.fmt.pix;
+
+ pix_fmt->width = 640;
+ pix_fmt->height = 480;
+ pix_fmt->field = V4L2_FIELD_NONE;
+ pix_fmt->colorspace = V4L2_COLORSPACE_SRGB;
+ pix_fmt->ycbcr_enc = V4L2_YCBCR_ENC_601;
+ pix_fmt->quantization = V4L2_QUANTIZATION_LIM_RANGE;
+ pix_fmt->xfer_func = V4L2_XFER_FUNC_SRGB;
+ pix_fmt->pixelformat = formats[0].fourcc;
+ unicam_calc_format_size_bpl(node->dev, &formats[0],
+ &node->v_fmt);
+ node->v_fmt.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
+
+ node->fmt = &formats[0];
+ } else {
+ const struct unicam_fmt *fmt;
+
+ /* Fix this node format as embedded data. */
+ fmt = find_format_by_code(MEDIA_BUS_FMT_METADATA_8);
+ node->v_fmt.fmt.meta.dataformat = fmt->fourcc;
+ node->fmt = fmt;
+ node->v_fmt.fmt.meta.buffersize = UNICAM_EMBEDDED_SIZE;
+ node->embedded_lines = 1;
+ node->v_fmt.type = V4L2_BUF_TYPE_META_CAPTURE;
+ }
+}
+
+static int register_node(struct unicam_device *unicam, struct unicam_node *node,
+ enum v4l2_buf_type type)
+{
+ struct video_device *vdev;
+ struct vb2_queue *q;
+ int ret;
+
+ node->dev = unicam;
+ node->node_id = type == V4L2_BUF_TYPE_VIDEO_CAPTURE ?
+ IMAGE_NODE :
+ METADATA_NODE;
+
+ spin_lock_init(&node->dma_queue_lock);
+ mutex_init(&node->lock);
+
+ vdev = &node->video_dev;
+ /*
+ * If the sensor subdevice has any controls, associate the node
+ * with the ctrl handler to allow access from userland.
+ */
+ if (!list_empty(&unicam->ctrl_handler.ctrls))
+ vdev->ctrl_handler = &unicam->ctrl_handler;
+
+ q = &node->buffer_queue;
+ q->type = type;
+ q->io_modes = VB2_MMAP | VB2_DMABUF | VB2_READ;
+ q->drv_priv = node;
+ q->ops = &unicam_video_qops;
+ q->mem_ops = &vb2_dma_contig_memops;
+ q->buf_struct_size = sizeof(struct unicam_buffer);
+ q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
+ q->lock = &node->lock;
+ q->min_buffers_needed = 1;
+ q->dev = &unicam->pdev->dev;
+
+ ret = vb2_queue_init(q);
+ if (ret) {
+ unicam_err(unicam, "vb2_queue_init() failed\n");
+ return ret;
+ }
+
+ INIT_LIST_HEAD(&node->dma_queue);
+
+ vdev->release = unicam_node_release;
+ vdev->fops = &unicam_fops;
+ vdev->ioctl_ops = &unicam_mc_ioctl_ops;
+ vdev->v4l2_dev = &unicam->v4l2_dev;
+ vdev->vfl_dir = VFL_DIR_RX;
+ vdev->queue = q;
+ vdev->lock = &node->lock;
+ vdev->device_caps = (type == V4L2_BUF_TYPE_VIDEO_CAPTURE) ?
+ V4L2_CAP_VIDEO_CAPTURE : V4L2_CAP_META_CAPTURE;
+ vdev->device_caps |= V4L2_CAP_READWRITE | V4L2_CAP_STREAMING | V4L2_CAP_IO_MC;
+ vdev->entity.ops = &unicam_mc_entity_ops;
+
+ /* Define the device names */
+ snprintf(vdev->name, sizeof(vdev->name), "%s-%s", UNICAM_MODULE_NAME,
+ type == V4L2_BUF_TYPE_VIDEO_CAPTURE ? "image" : "embedded");
+
+ video_set_drvdata(vdev, node);
+ if (type == V4L2_BUF_TYPE_VIDEO_CAPTURE)
+ vdev->entity.flags |= MEDIA_ENT_FL_DEFAULT;
+ node->pad.flags = MEDIA_PAD_FL_SINK;
+ media_entity_pads_init(&vdev->entity, 1, &node->pad);
+
+ node->dummy_buf_cpu_addr = dma_alloc_coherent(&unicam->pdev->dev,
+ DUMMY_BUF_SIZE,
+ &node->dummy_buf_dma_addr,
+ GFP_KERNEL);
+ if (!node->dummy_buf_cpu_addr) {
+ unicam_err(unicam, "Unable to allocate dummy buffer.\n");
+ return -ENOMEM;
+ }
+
+ ret = video_register_device(vdev, VFL_TYPE_VIDEO, -1);
+ if (ret) {
+ unicam_err(unicam, "Unable to register video device %s\n",
+ vdev->name);
+ return ret;
+ }
+
+ /*
+ * Acquire a reference to unicam, which will be released when the video
+ * device will be unregistered and userspace will have closed all open
+ * file handles.
+ */
+ unicam_get(unicam);
+ node->registered = true;
+
+ ret = media_create_pad_link(&unicam->sd.entity,
+ node->src_pad_id,
+ &node->video_dev.entity,
+ 0,
+ MEDIA_LNK_FL_ENABLED |
+ MEDIA_LNK_FL_IMMUTABLE);
+ if (ret)
+ unicam_err(unicam, "Unable to create pad link for %s",
+ unicam->sensor->name);
+
+ unicam_mc_set_default_format(node);
+
+ return ret;
+}
+
+static void unregister_nodes(struct unicam_device *unicam)
+{
+ unsigned int i;
+
+ for (i = 0; i < ARRAY_SIZE(unicam->node); i++) {
+ struct unicam_node *node = &unicam->node[i];
+
+ if (node->dummy_buf_cpu_addr) {
+ dma_free_coherent(&unicam->pdev->dev, DUMMY_BUF_SIZE,
+ node->dummy_buf_cpu_addr,
+ node->dummy_buf_dma_addr);
+ }
+
+ if (node->registered) {
+ node->registered = false;
+ video_unregister_device(&node->video_dev);
+ }
+ }
+}
+
+static int unicam_async_complete(struct v4l2_async_notifier *notifier)
+{
+ struct unicam_device *unicam = to_unicam_device(notifier->v4l2_dev);
+ unsigned int i, source_pads = 0;
+ int ret;
+ static struct lock_class_key key;
+
+ unicam->v4l2_dev.notify = unicam_notify;
+
+ unicam->sensor_state = __v4l2_subdev_state_alloc(unicam->sensor,
+ "unicam:state->lock",
+ &key);
+ if (!unicam->sensor_state)
+ return -ENOMEM;
+
+ for (i = 0; i < unicam->sd.entity.num_pads; i++) {
+ if (unicam->sd.entity.pads[i].flags & MEDIA_PAD_FL_SOURCE) {
+ if (source_pads < MAX_NODES) {
+ unicam->node[source_pads].src_pad_id = i;
+ unicam_dbg(3, unicam, "source pad %u is index %u\n",
+ source_pads, i);
+ }
+ source_pads++;
+ }
+ }
+ if (!source_pads) {
+ unicam_err(unicam, "No source pads on sensor.\n");
+ goto unregister;
+ }
+
+ ret = register_node(unicam, &unicam->node[IMAGE_NODE],
+ V4L2_BUF_TYPE_VIDEO_CAPTURE);
+ if (ret) {
+ unicam_err(unicam, "Unable to register image video device.\n");
+ goto unregister;
+ }
+
+ /* \todo: check before :-) */
+ unicam->sensor_embedded_data = true;
+
+ ret = register_node(unicam, &unicam->node[METADATA_NODE],
+ V4L2_BUF_TYPE_META_CAPTURE);
+ if (ret) {
+ unicam_err(unicam, "Unable to register metadata video device.\n");
+ goto unregister;
+ }
+
+ ret = media_create_pad_link(&unicam->sensor->entity,
+ 0,
+ &unicam->sd.entity,
+ UNICAM_SD_PAD_SINK,
+ MEDIA_LNK_FL_ENABLED |
+ MEDIA_LNK_FL_IMMUTABLE);
+ if (ret)
+ unicam_err(unicam, "Unable to create pad link for %s",
+ unicam->sensor->name);
+
+ ret = v4l2_device_register_subdev_nodes(&unicam->v4l2_dev);
+ if (ret) {
+ unicam_err(unicam, "Unable to register subdev nodes.\n");
+ goto unregister;
+ }
+
+ /*
+ * Release the initial reference, all references are now owned by the
+ * video devices.
+ */
+ unicam_put(unicam);
+ return 0;
+
+unregister:
+ unregister_nodes(unicam);
+ unicam_put(unicam);
+
+ return ret;
+}
+
+static const struct v4l2_async_notifier_operations unicam_async_ops = {
+ .bound = unicam_async_bound,
+ .complete = unicam_async_complete,
+};
+
+static int of_unicam_connect_subdevs(struct unicam_device *dev)
+{
+ struct platform_device *pdev = dev->pdev;
+ struct v4l2_fwnode_endpoint ep = { };
+ struct device_node *ep_node;
+ struct device_node *sensor_node;
+ unsigned int lane;
+ int ret = -EINVAL;
+
+ if (of_property_read_u32(pdev->dev.of_node, "brcm,num-data-lanes",
+ &dev->max_data_lanes) < 0) {
+ unicam_err(dev, "number of data lanes not set\n");
+ return -EINVAL;
+ }
+
+ /* Get the local endpoint and remote device. */
+ ep_node = of_graph_get_next_endpoint(pdev->dev.of_node, NULL);
+ if (!ep_node) {
+ unicam_dbg(3, dev, "can't get next endpoint\n");
+ return -EINVAL;
+ }
+
+ unicam_dbg(3, dev, "ep_node is %pOF\n", ep_node);
+
+ sensor_node = of_graph_get_remote_port_parent(ep_node);
+ if (!sensor_node) {
+ unicam_dbg(3, dev, "can't get remote parent\n");
+ goto cleanup_exit;
+ }
+
+ unicam_dbg(1, dev, "found subdevice %pOF\n", sensor_node);
+
+ /* Parse the local endpoint and validate its configuration. */
+ v4l2_fwnode_endpoint_parse(of_fwnode_handle(ep_node), &ep);
+
+ unicam_dbg(3, dev, "parsed local endpoint, bus_type %u\n",
+ ep.bus_type);
+
+ dev->bus_type = ep.bus_type;
+
+ switch (ep.bus_type) {
+ case V4L2_MBUS_CSI2_DPHY:
+ switch (ep.bus.mipi_csi2.num_data_lanes) {
+ case 1:
+ case 2:
+ case 4:
+ break;
+
+ default:
+ unicam_err(dev, "subdevice %pOF: %u data lanes not supported\n",
+ sensor_node,
+ ep.bus.mipi_csi2.num_data_lanes);
+ goto cleanup_exit;
+ }
+
+ for (lane = 0; lane < ep.bus.mipi_csi2.num_data_lanes; lane++) {
+ if (ep.bus.mipi_csi2.data_lanes[lane] != lane + 1) {
+ unicam_err(dev, "subdevice %pOF: data lanes reordering not supported\n",
+ sensor_node);
+ goto cleanup_exit;
+ }
+ }
+
+ if (ep.bus.mipi_csi2.num_data_lanes > dev->max_data_lanes) {
+ unicam_err(dev, "subdevice requires %u data lanes when %u are supported\n",
+ ep.bus.mipi_csi2.num_data_lanes,
+ dev->max_data_lanes);
+ }
+
+ dev->max_data_lanes = ep.bus.mipi_csi2.num_data_lanes;
+ dev->bus_flags = ep.bus.mipi_csi2.flags;
+
+ break;
+
+ case V4L2_MBUS_CCP2:
+ if (ep.bus.mipi_csi1.clock_lane != 0 ||
+ ep.bus.mipi_csi1.data_lane != 1) {
+ unicam_err(dev, "subdevice %pOF: unsupported lanes configuration\n",
+ sensor_node);
+ goto cleanup_exit;
+ }
+
+ dev->max_data_lanes = 1;
+ dev->bus_flags = ep.bus.mipi_csi1.strobe;
+ break;
+
+ default:
+ /* Unsupported bus type */
+ unicam_err(dev, "subdevice %pOF: unsupported bus type %u\n",
+ sensor_node, ep.bus_type);
+ goto cleanup_exit;
+ }
+
+ unicam_dbg(3, dev, "subdevice %pOF: %s bus, %u data lanes, flags=0x%08x\n",
+ sensor_node,
+ dev->bus_type == V4L2_MBUS_CSI2_DPHY ? "CSI-2" : "CCP2",
+ dev->max_data_lanes, dev->bus_flags);
+
+ /* Initialize and register the async notifier. */
+ v4l2_async_nf_init(&dev->notifier);
+ dev->notifier.ops = &unicam_async_ops;
+
+ dev->asd.match_type = V4L2_ASYNC_MATCH_FWNODE;
+ dev->asd.match.fwnode = fwnode_graph_get_remote_endpoint(of_fwnode_handle(ep_node));
+ ret = v4l2_async_nf_add_subdev(&dev->notifier, &dev->asd);
+ if (ret) {
+ unicam_err(dev, "Error adding subdevice: %d\n", ret);
+ goto cleanup_exit;
+ }
+
+ ret = v4l2_async_nf_register(&dev->v4l2_dev, &dev->notifier);
+ if (ret) {
+ unicam_err(dev, "Error registering async notifier: %d\n", ret);
+ ret = -EINVAL;
+ }
+
+cleanup_exit:
+ of_node_put(sensor_node);
+ of_node_put(ep_node);
+
+ return ret;
+}
+
+static int bcm2835_media_dev_init(struct unicam_device *unicam,
+ struct platform_device *pdev)
+{
+ int ret = 0;
+
+ unicam->mdev.dev = &pdev->dev;
+ strscpy(unicam->mdev.model, UNICAM_MODULE_NAME,
+ sizeof(unicam->mdev.model));
+ strscpy(unicam->mdev.serial, "", sizeof(unicam->mdev.serial));
+ snprintf(unicam->mdev.bus_info, sizeof(unicam->mdev.bus_info),
+ "platform:%s", dev_name(&pdev->dev));
+ unicam->mdev.hw_revision = 0;
+
+ media_device_init(&unicam->mdev);
+
+ unicam->v4l2_dev.mdev = &unicam->mdev;
+
+ ret = v4l2_device_register(&pdev->dev, &unicam->v4l2_dev);
+
+ return ret;
+}
+
+/* Internal subdev */
+
+static int _unicam_subdev_set_routing(struct v4l2_subdev *sd,
+ struct v4l2_subdev_state *state,
+ struct v4l2_subdev_krouting *routing)
+{
+ static const struct v4l2_mbus_framefmt format = {
+ .width = 640,
+ .height = 480,
+ .code = MEDIA_BUS_FMT_UYVY8_2X8,
+ .field = V4L2_FIELD_NONE,
+ .colorspace = V4L2_COLORSPACE_SRGB,
+ .ycbcr_enc = V4L2_YCBCR_ENC_601,
+ .quantization = V4L2_QUANTIZATION_LIM_RANGE,
+ .xfer_func = V4L2_XFER_FUNC_SRGB,
+ .flags = 0,
+ };
+ int ret;
+
+ ret = v4l2_subdev_routing_validate_1_to_1(routing);
+ if (ret)
+ return ret;
+
+ v4l2_subdev_lock_state(state);
+
+ ret = v4l2_subdev_set_routing_with_fmt(sd, state, routing, &format);
+
+ v4l2_subdev_unlock_state(state);
+
+ if (ret)
+ return ret;
+
+ return 0;
+}
+
+static int unicam_subdev_set_routing(struct v4l2_subdev *sd,
+ struct v4l2_subdev_state *state,
+ enum v4l2_subdev_format_whence which,
+ struct v4l2_subdev_krouting *routing)
+{
+ struct unicam_device *unicam = sd_to_unicam_device(sd);
+
+ if (which == V4L2_SUBDEV_FORMAT_ACTIVE && unicam->streaming)
+ return -EBUSY;
+
+ return _unicam_subdev_set_routing(sd, state, routing);
+}
+
+static int unicam_subdev_init_cfg(struct v4l2_subdev *sd,
+ struct v4l2_subdev_state *state)
+{
+ struct v4l2_subdev_route routes[] = {
+ {
+ .sink_pad = 0,
+ .sink_stream = 0,
+ .source_pad = 1,
+ .source_stream = 0,
+ .flags = V4L2_SUBDEV_ROUTE_FL_ACTIVE,
+ },
+ };
+
+ struct v4l2_subdev_krouting routing = {
+ .num_routes = ARRAY_SIZE(routes),
+ .routes = routes,
+ };
+
+ /* Initialize routing to single route to the fist source pad */
+ return _unicam_subdev_set_routing(sd, state, &routing);
+}
+
+static int unicam_subdev_enum_mbus_code(struct v4l2_subdev *sd,
+ struct v4l2_subdev_state *state,
+ struct v4l2_subdev_mbus_code_enum *code)
+{
+ int ret = 0;
+
+ v4l2_subdev_lock_state(state);
+
+ /* No transcoding, source and sink codes must match. */
+ if (unicam_sd_pad_is_source(code->pad)) {
+ struct v4l2_mbus_framefmt *fmt;
+
+ if (code->index > 0) {
+ ret = -EINVAL;
+ goto out;
+ }
+
+ fmt = v4l2_subdev_state_get_opposite_stream_format(state,
+ code->pad,
+ code->stream);
+ if (!fmt) {
+ ret = -EINVAL;
+ goto out;
+ }
+
+ code->code = fmt->code;
+ } else {
+ if (code->index >= ARRAY_SIZE(formats)) {
+ ret = -EINVAL;
+ goto out;
+ }
+
+ code->code = formats[code->index].code;
+ }
+
+out:
+ v4l2_subdev_unlock_state(state);
+
+ return ret;
+}
+
+static int unicam_subdev_start_streaming(struct unicam_device *unicam)
+{
+ const struct v4l2_subdev_krouting *routing;
+ struct v4l2_subdev_state *state;
+ int ret = 0;
+
+ state = v4l2_subdev_lock_active_state(&unicam->sd);
+
+ routing = &state->routing;
+
+ v4l2_subdev_unlock_state(state);
+
+ unicam->streaming = true;
+
+ ret = v4l2_subdev_call(unicam->sensor, video, s_stream, 1);
+ if (ret) {
+ v4l2_subdev_call(unicam->sensor, video, s_stream, 0);
+ unicam->streaming = false;
+ return ret;
+ }
+
+ return 0;
+}
+
+static int unicam_subdev_stop_streaming(struct unicam_device *unicam)
+{
+ v4l2_subdev_call(unicam->sensor, video, s_stream, 0);
+
+ unicam->streaming = false;
+
+ return 0;
+}
+
+static int unicam_subdev_s_stream(struct v4l2_subdev *sd, int enable)
+{
+ struct unicam_device *unicam = sd_to_unicam_device(sd);
+
+ if (enable)
+ return unicam_subdev_start_streaming(unicam);
+ else
+ return unicam_subdev_stop_streaming(unicam);
+ return 0;
+}
+
+static int unicam_subdev_set_pad_format(struct v4l2_subdev *sd,
+ struct v4l2_subdev_state *state,
+ struct v4l2_subdev_format *format)
+{
+ struct unicam_device *unicam = sd_to_unicam_device(sd);
+ struct v4l2_mbus_framefmt *fmt;
+ int ret = 0;
+
+ if (format->which == V4L2_SUBDEV_FORMAT_ACTIVE && unicam->streaming)
+ return -EBUSY;
+
+ /* No transcoding, source and sink formats must match. */
+ if (unicam_sd_pad_is_source(format->pad))
+ return v4l2_subdev_get_fmt(sd, state, format);
+
+ // TODO: implement fmt validation
+
+ v4l2_subdev_lock_state(state);
+
+ fmt = v4l2_state_get_stream_format(state, format->pad, format->stream);
+ if (!fmt) {
+ ret = -EINVAL;
+ goto out;
+ }
+
+ *fmt = format->format;
+
+ fmt = v4l2_subdev_state_get_opposite_stream_format(state, format->pad,
+ format->stream);
+ if (!fmt) {
+ ret = -EINVAL;
+ goto out;
+ }
+
+ *fmt = format->format;
+
+out:
+ v4l2_subdev_unlock_state(state);
+
+ return ret;
+}
+
+static int unicam_subdev_enum_frame_size(struct v4l2_subdev *sd,
+ struct v4l2_subdev_state *state,
+ struct v4l2_subdev_frame_size_enum *fse)
+{
+ const struct unicam_fmt *fmtinfo;
+ int ret = 0;
+
+ if (fse->index > 0)
+ return -EINVAL;
+
+ v4l2_subdev_lock_state(state);
+
+ /* No transcoding, source and sink formats must match. */
+ if (unicam_sd_pad_is_source(fse->pad)) {
+ struct v4l2_mbus_framefmt *fmt;
+
+ fmt = v4l2_subdev_state_get_opposite_stream_format(state,
+ fse->pad,
+ fse->stream);
+
+ if (!fmt) {
+ ret = -EINVAL;
+ goto out;
+ }
+
+ if (fse->code != fmt->code) {
+ ret = -EINVAL;
+ goto out;
+ }
+
+ fse->min_width = fmt->width;
+ fse->max_width = fmt->width;
+ fse->min_height = fmt->height;
+ fse->max_height = fmt->height;
+ } else {
+ fmtinfo = find_format_by_code(fse->code);
+ if (!fmtinfo) {
+ ret = -EINVAL;
+ goto out;
+ }
+
+ fse->min_width = MIN_WIDTH * 8 / ALIGN(fmtinfo->depth, 8);
+ fse->max_width = MAX_WIDTH * 8 / ALIGN(fmtinfo->depth, 8);
+ fse->min_height = MIN_HEIGHT;
+ fse->max_height = MAX_HEIGHT;
+ }
+
+out:
+ v4l2_subdev_unlock_state(state);
+
+ return ret;
+}
+
+static const struct v4l2_subdev_video_ops unicam_subdev_video_ops = {
+ .s_stream = unicam_subdev_s_stream,
+};
+
+static const struct v4l2_subdev_pad_ops unicam_subdev_pad_ops = {
+ .init_cfg = unicam_subdev_init_cfg,
+ .enum_mbus_code = unicam_subdev_enum_mbus_code,
+ .get_fmt = v4l2_subdev_get_fmt,
+ .set_fmt = unicam_subdev_set_pad_format,
+ .set_routing = unicam_subdev_set_routing,
+ .enum_frame_size = unicam_subdev_enum_frame_size,
+};
+
+static const struct v4l2_subdev_ops unicam_subdev_ops = {
+ .video = &unicam_subdev_video_ops,
+ .pad = &unicam_subdev_pad_ops,
+};
+
+static struct media_entity_operations unicam_subdev_media_ops = {
+ .link_validate = v4l2_subdev_link_validate,
+ .has_route = v4l2_subdev_has_route,
+};
+
+static int unicam_probe(struct platform_device *pdev)
+{
+ struct unicam_device *unicam;
+ int ret = 0;
+ int i;
+
+ unicam = kzalloc(sizeof(*unicam), GFP_KERNEL);
+ if (!unicam)
+ return -ENOMEM;
+
+ kref_init(&unicam->kref);
+ unicam->pdev = pdev;
+
+ /*
+ * Adopt the current setting of the module parameter, and check if
+ * device tree requests it.
+ */
+ if (!of_property_read_bool(pdev->dev.of_node, "brcm,media-controller")) {
+ unicam_err(unicam, "Failed to find media-controller node\n");
+ goto err_unicam_put;
+ }
+
+ unicam->base = devm_platform_ioremap_resource(pdev, 0);
+ if (IS_ERR(unicam->base)) {
+ unicam_err(unicam, "Failed to get main io block\n");
+ ret = PTR_ERR(unicam->base);
+ goto err_unicam_put;
+ }
+
+ unicam->clk_gate_base = devm_platform_ioremap_resource(pdev, 1);
+ if (IS_ERR(unicam->clk_gate_base)) {
+ unicam_err(unicam, "Failed to get 2nd io block\n");
+ ret = PTR_ERR(unicam->clk_gate_base);
+ goto err_unicam_put;
+ }
+
+ unicam->clock = devm_clk_get(&pdev->dev, "lp");
+ if (IS_ERR(unicam->clock)) {
+ unicam_err(unicam, "Failed to get lp clock\n");
+ ret = PTR_ERR(unicam->clock);
+ goto err_unicam_put;
+ }
+
+ unicam->vpu_clock = devm_clk_get(&pdev->dev, "vpu");
+ if (IS_ERR(unicam->vpu_clock)) {
+ unicam_err(unicam, "Failed to get vpu clock\n");
+ ret = PTR_ERR(unicam->vpu_clock);
+ goto err_unicam_put;
+ }
+
+ ret = platform_get_irq(pdev, 0);
+ if (ret <= 0) {
+ dev_err(&pdev->dev, "No IRQ resource\n");
+ ret = -EINVAL;
+ goto err_unicam_put;
+ }
+
+ ret = devm_request_irq(&pdev->dev, ret, unicam_isr, 0,
+ "unicam_capture0", unicam);
+ if (ret) {
+ dev_err(&pdev->dev, "Unable to request interrupt\n");
+ ret = -EINVAL;
+ goto err_unicam_put;
+ }
+
+ ret = bcm2835_media_dev_init(unicam, pdev);
+ if (ret) {
+ unicam_err(unicam,
+ "Unable to register v4l2 device.\n");
+ goto err_unicam_put;
+ }
+
+ ret = media_device_register(&unicam->mdev);
+ if (ret < 0) {
+ unicam_err(unicam,
+ "Unable to register media-controller device.\n");
+ goto err_v4l2_unregister;
+ }
+
+ /* Reserve space for the controls */
+ ret = v4l2_ctrl_handler_init(&unicam->ctrl_handler, 16);
+ if (ret < 0)
+ goto err_media_unregister;
+
+ /* set the driver data in platform device */
+ platform_set_drvdata(pdev, unicam);
+
+ unicam_dbg(3, unicam, "Initialize internal subdev");
+ v4l2_subdev_init(&unicam->sd, &unicam_subdev_ops);
+ v4l2_set_subdevdata(&unicam->sd, unicam);
+ unicam->sd.entity.function = MEDIA_ENT_F_VID_IF_BRIDGE;
+ unicam->sd.dev = &pdev->dev;
+ unicam->sd.owner = THIS_MODULE;
+ unicam->sd.flags = V4L2_SUBDEV_FL_HAS_DEVNODE | V4L2_SUBDEV_FL_MULTIPLEXED;
+ snprintf(unicam->sd.name, sizeof(unicam->sd.name), "unicam-subdev");
+
+ unicam->pads[UNICAM_SD_PAD_SINK].flags = MEDIA_PAD_FL_SINK;
+
+ for (i = UNICAM_SD_PAD_FIRST_SOURCE; i < UNICAM_SD_NUM_PADS; ++i)
+ unicam->pads[i].flags = MEDIA_PAD_FL_SOURCE;
+ unicam->sd.entity.ops = &unicam_subdev_media_ops;
+ ret = media_entity_pads_init(&unicam->sd.entity,
+ ARRAY_SIZE(unicam->pads), unicam->pads);
+ if (ret) {
+ unicam_err(unicam, "Could not init media controller for subdev");
+ goto err_subdev_unregister;
+ }
+
+ ret = v4l2_subdev_init_finalize(&unicam->sd);
+ if (ret) {
+ unicam_err(unicam, "Could not finalize init for subdev");
+ goto err_entity_cleanup;
+ }
+
+ ret = v4l2_device_register_subdev(&unicam->v4l2_dev, &unicam->sd);
+ if (ret) {
+ dev_err(&pdev->dev, "Failed to register internal subdev\n");
+ goto err_subdev_unregister;
+ }
+
+ ret = of_unicam_connect_subdevs(unicam);
+ if (ret) {
+ dev_err(&pdev->dev, "Failed to connect subdevs\n");
+ goto err_subdev_unregister;
+ }
+
+ /* Enable the block power domain */
+ pm_runtime_enable(&pdev->dev);
+
+ return 0;
+
+err_subdev_unregister:
+ v4l2_subdev_cleanup(&unicam->sd);
+err_entity_cleanup:
+ media_entity_cleanup(&unicam->sd.entity);
+err_media_unregister:
+ media_device_unregister(&unicam->mdev);
+err_v4l2_unregister:
+ v4l2_device_unregister(&unicam->v4l2_dev);
+err_unicam_put:
+ unicam_put(unicam);
+
+ return ret;
+}
+
+static int unicam_remove(struct platform_device *pdev)
+{
+ struct unicam_device *unicam = platform_get_drvdata(pdev);
+
+ v4l2_async_nf_unregister(&unicam->notifier);
+ v4l2_device_unregister(&unicam->v4l2_dev);
+ media_device_unregister(&unicam->mdev);
+ unregister_nodes(unicam);
+
+ pm_runtime_disable(&pdev->dev);
+
+ return 0;
+}
+
+static const struct of_device_id unicam_of_match[] = {
+ { .compatible = "brcm,bcm2835-unicam", },
+ { /* sentinel */ },
+};
+MODULE_DEVICE_TABLE(of, unicam_of_match);
+
+static struct platform_driver unicam_driver = {
+ .probe = unicam_probe,
+ .remove = unicam_remove,
+ .driver = {
+ .name = UNICAM_MODULE_NAME,
+ .of_match_table = of_match_ptr(unicam_of_match),
+ },
+};
+
+module_platform_driver(unicam_driver);
+
+MODULE_AUTHOR("Dave Stevenson <dave.stevenson@raspberrypi.com>");
+MODULE_DESCRIPTION("BCM2835 Unicam driver");
+MODULE_LICENSE("GPL");
+MODULE_VERSION(UNICAM_VERSION);
diff --git a/drivers/media/platform/bcm2835/vc4-regs-unicam.h b/drivers/media/platform/bcm2835/vc4-regs-unicam.h
new file mode 100644
index 000000000000..ae059a171d0f
--- /dev/null
+++ b/drivers/media/platform/bcm2835/vc4-regs-unicam.h
@@ -0,0 +1,253 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
+/*
+ * Copyright (C) 2017-2020 Raspberry Pi Trading.
+ * Dave Stevenson <dave.stevenson@raspberrypi.com>
+ */
+
+#ifndef VC4_REGS_UNICAM_H
+#define VC4_REGS_UNICAM_H
+
+/*
+ * The following values are taken from files found within the code drop
+ * made by Broadcom for the BCM21553 Graphics Driver, predominantly in
+ * brcm_usrlib/dag/vmcsx/vcinclude/hardware_vc4.h.
+ * They have been modified to be only the register offset.
+ */
+#define UNICAM_CTRL 0x000
+#define UNICAM_STA 0x004
+#define UNICAM_ANA 0x008
+#define UNICAM_PRI 0x00c
+#define UNICAM_CLK 0x010
+#define UNICAM_CLT 0x014
+#define UNICAM_DAT0 0x018
+#define UNICAM_DAT1 0x01c
+#define UNICAM_DAT2 0x020
+#define UNICAM_DAT3 0x024
+#define UNICAM_DLT 0x028
+#define UNICAM_CMP0 0x02c
+#define UNICAM_CMP1 0x030
+#define UNICAM_CAP0 0x034
+#define UNICAM_CAP1 0x038
+#define UNICAM_ICTL 0x100
+#define UNICAM_ISTA 0x104
+#define UNICAM_IDI0 0x108
+#define UNICAM_IPIPE 0x10c
+#define UNICAM_IBSA0 0x110
+#define UNICAM_IBEA0 0x114
+#define UNICAM_IBLS 0x118
+#define UNICAM_IBWP 0x11c
+#define UNICAM_IHWIN 0x120
+#define UNICAM_IHSTA 0x124
+#define UNICAM_IVWIN 0x128
+#define UNICAM_IVSTA 0x12c
+#define UNICAM_ICC 0x130
+#define UNICAM_ICS 0x134
+#define UNICAM_IDC 0x138
+#define UNICAM_IDPO 0x13c
+#define UNICAM_IDCA 0x140
+#define UNICAM_IDCD 0x144
+#define UNICAM_IDS 0x148
+#define UNICAM_DCS 0x200
+#define UNICAM_DBSA0 0x204
+#define UNICAM_DBEA0 0x208
+#define UNICAM_DBWP 0x20c
+#define UNICAM_DBCTL 0x300
+#define UNICAM_IBSA1 0x304
+#define UNICAM_IBEA1 0x308
+#define UNICAM_IDI1 0x30c
+#define UNICAM_DBSA1 0x310
+#define UNICAM_DBEA1 0x314
+#define UNICAM_MISC 0x400
+
+/*
+ * The following bitmasks are from the kernel released by Broadcom
+ * for Android - https://android.googlesource.com/kernel/bcm/
+ * The Rhea, Hawaii, and Java chips all contain the same VideoCore4
+ * Unicam block as BCM2835, as defined in eg
+ * arch/arm/mach-rhea/include/mach/rdb_A0/brcm_rdb_cam.h and similar.
+ * Values reworked to use the kernel BIT and GENMASK macros.
+ *
+ * Some of the bit mnenomics have been amended to match the datasheet.
+ */
+/* UNICAM_CTRL Register */
+#define UNICAM_CPE BIT(0)
+#define UNICAM_MEM BIT(1)
+#define UNICAM_CPR BIT(2)
+#define UNICAM_CPM_MASK GENMASK(3, 3)
+#define UNICAM_CPM_CSI2 0
+#define UNICAM_CPM_CCP2 1
+#define UNICAM_SOE BIT(4)
+#define UNICAM_DCM_MASK GENMASK(5, 5)
+#define UNICAM_DCM_STROBE 0
+#define UNICAM_DCM_DATA 1
+#define UNICAM_SLS BIT(6)
+#define UNICAM_PFT_MASK GENMASK(11, 8)
+#define UNICAM_OET_MASK GENMASK(20, 12)
+
+/* UNICAM_STA Register */
+#define UNICAM_SYN BIT(0)
+#define UNICAM_CS BIT(1)
+#define UNICAM_SBE BIT(2)
+#define UNICAM_PBE BIT(3)
+#define UNICAM_HOE BIT(4)
+#define UNICAM_PLE BIT(5)
+#define UNICAM_SSC BIT(6)
+#define UNICAM_CRCE BIT(7)
+#define UNICAM_OES BIT(8)
+#define UNICAM_IFO BIT(9)
+#define UNICAM_OFO BIT(10)
+#define UNICAM_BFO BIT(11)
+#define UNICAM_DL BIT(12)
+#define UNICAM_PS BIT(13)
+#define UNICAM_IS BIT(14)
+#define UNICAM_PI0 BIT(15)
+#define UNICAM_PI1 BIT(16)
+#define UNICAM_FSI_S BIT(17)
+#define UNICAM_FEI_S BIT(18)
+#define UNICAM_LCI_S BIT(19)
+#define UNICAM_BUF0_RDY BIT(20)
+#define UNICAM_BUF0_NO BIT(21)
+#define UNICAM_BUF1_RDY BIT(22)
+#define UNICAM_BUF1_NO BIT(23)
+#define UNICAM_DI BIT(24)
+
+#define UNICAM_STA_MASK_ALL \
+ (UNICAM_DL + \
+ UNICAM_SBE + \
+ UNICAM_PBE + \
+ UNICAM_HOE + \
+ UNICAM_PLE + \
+ UNICAM_SSC + \
+ UNICAM_CRCE + \
+ UNICAM_IFO + \
+ UNICAM_OFO + \
+ UNICAM_PS + \
+ UNICAM_PI0 + \
+ UNICAM_PI1)
+
+/* UNICAM_ANA Register */
+#define UNICAM_APD BIT(0)
+#define UNICAM_BPD BIT(1)
+#define UNICAM_AR BIT(2)
+#define UNICAM_DDL BIT(3)
+#define UNICAM_CTATADJ_MASK GENMASK(7, 4)
+#define UNICAM_PTATADJ_MASK GENMASK(11, 8)
+
+/* UNICAM_PRI Register */
+#define UNICAM_PE BIT(0)
+#define UNICAM_PT_MASK GENMASK(2, 1)
+#define UNICAM_NP_MASK GENMASK(7, 4)
+#define UNICAM_PP_MASK GENMASK(11, 8)
+#define UNICAM_BS_MASK GENMASK(15, 12)
+#define UNICAM_BL_MASK GENMASK(17, 16)
+
+/* UNICAM_CLK Register */
+#define UNICAM_CLE BIT(0)
+#define UNICAM_CLPD BIT(1)
+#define UNICAM_CLLPE BIT(2)
+#define UNICAM_CLHSE BIT(3)
+#define UNICAM_CLTRE BIT(4)
+#define UNICAM_CLAC_MASK GENMASK(8, 5)
+#define UNICAM_CLSTE BIT(29)
+
+/* UNICAM_CLT Register */
+#define UNICAM_CLT1_MASK GENMASK(7, 0)
+#define UNICAM_CLT2_MASK GENMASK(15, 8)
+
+/* UNICAM_DATn Registers */
+#define UNICAM_DLE BIT(0)
+#define UNICAM_DLPD BIT(1)
+#define UNICAM_DLLPE BIT(2)
+#define UNICAM_DLHSE BIT(3)
+#define UNICAM_DLTRE BIT(4)
+#define UNICAM_DLSM BIT(5)
+#define UNICAM_DLFO BIT(28)
+#define UNICAM_DLSTE BIT(29)
+
+#define UNICAM_DAT_MASK_ALL (UNICAM_DLSTE + UNICAM_DLFO)
+
+/* UNICAM_DLT Register */
+#define UNICAM_DLT1_MASK GENMASK(7, 0)
+#define UNICAM_DLT2_MASK GENMASK(15, 8)
+#define UNICAM_DLT3_MASK GENMASK(23, 16)
+
+/* UNICAM_ICTL Register */
+#define UNICAM_FSIE BIT(0)
+#define UNICAM_FEIE BIT(1)
+#define UNICAM_IBOB BIT(2)
+#define UNICAM_FCM BIT(3)
+#define UNICAM_TFC BIT(4)
+#define UNICAM_LIP_MASK GENMASK(6, 5)
+#define UNICAM_LCIE_MASK GENMASK(28, 16)
+
+/* UNICAM_IDI0/1 Register */
+#define UNICAM_ID0_MASK GENMASK(7, 0)
+#define UNICAM_ID1_MASK GENMASK(15, 8)
+#define UNICAM_ID2_MASK GENMASK(23, 16)
+#define UNICAM_ID3_MASK GENMASK(31, 24)
+
+/* UNICAM_ISTA Register */
+#define UNICAM_FSI BIT(0)
+#define UNICAM_FEI BIT(1)
+#define UNICAM_LCI BIT(2)
+
+#define UNICAM_ISTA_MASK_ALL (UNICAM_FSI + UNICAM_FEI + UNICAM_LCI)
+
+/* UNICAM_IPIPE Register */
+#define UNICAM_PUM_MASK GENMASK(2, 0)
+ /* Unpacking modes */
+ #define UNICAM_PUM_NONE 0
+ #define UNICAM_PUM_UNPACK6 1
+ #define UNICAM_PUM_UNPACK7 2
+ #define UNICAM_PUM_UNPACK8 3
+ #define UNICAM_PUM_UNPACK10 4
+ #define UNICAM_PUM_UNPACK12 5
+ #define UNICAM_PUM_UNPACK14 6
+ #define UNICAM_PUM_UNPACK16 7
+#define UNICAM_DDM_MASK GENMASK(6, 3)
+#define UNICAM_PPM_MASK GENMASK(9, 7)
+ /* Packing modes */
+ #define UNICAM_PPM_NONE 0
+ #define UNICAM_PPM_PACK8 1
+ #define UNICAM_PPM_PACK10 2
+ #define UNICAM_PPM_PACK12 3
+ #define UNICAM_PPM_PACK14 4
+ #define UNICAM_PPM_PACK16 5
+#define UNICAM_DEM_MASK GENMASK(11, 10)
+#define UNICAM_DEBL_MASK GENMASK(14, 12)
+#define UNICAM_ICM_MASK GENMASK(16, 15)
+#define UNICAM_IDM_MASK GENMASK(17, 17)
+
+/* UNICAM_ICC Register */
+#define UNICAM_ICFL_MASK GENMASK(4, 0)
+#define UNICAM_ICFH_MASK GENMASK(9, 5)
+#define UNICAM_ICST_MASK GENMASK(12, 10)
+#define UNICAM_ICLT_MASK GENMASK(15, 13)
+#define UNICAM_ICLL_MASK GENMASK(31, 16)
+
+/* UNICAM_DCS Register */
+#define UNICAM_DIE BIT(0)
+#define UNICAM_DIM BIT(1)
+#define UNICAM_DBOB BIT(3)
+#define UNICAM_FDE BIT(4)
+#define UNICAM_LDP BIT(5)
+#define UNICAM_EDL_MASK GENMASK(15, 8)
+
+/* UNICAM_DBCTL Register */
+#define UNICAM_DBEN BIT(0)
+#define UNICAM_BUF0_IE BIT(1)
+#define UNICAM_BUF1_IE BIT(2)
+
+/* UNICAM_CMP[0,1] register */
+#define UNICAM_PCE BIT(31)
+#define UNICAM_GI BIT(9)
+#define UNICAM_CPH BIT(8)
+#define UNICAM_PCVC_MASK GENMASK(7, 6)
+#define UNICAM_PCDT_MASK GENMASK(5, 0)
+
+/* UNICAM_MISC register */
+#define UNICAM_FL0 BIT(6)
+#define UNICAM_FL1 BIT(9)
+
+#endif
--
2.32.0
^ permalink raw reply related [flat|nested] 6+ messages in thread
* [RFC PATCH 3/3] media: imx219: Add support for multiplexed streams
2022-01-12 17:27 [RFC PATCH 0/3] Add support for BCM2835 camera interface (unicam) Jean-Michel Hautbois
2022-01-12 17:27 ` [RFC PATCH 1/3] media: dt-bindings: media: Add bindings for bcm2835-unicam Jean-Michel Hautbois
2022-01-12 17:27 ` [RFC PATCH 2/3] media: bcm2835-unicam: Add support for for CCP2/CSI2 camera interface Jean-Michel Hautbois
@ 2022-01-12 17:27 ` Jean-Michel Hautbois
2 siblings, 0 replies; 6+ messages in thread
From: Jean-Michel Hautbois @ 2022-01-12 17:27 UTC (permalink / raw)
To: linux-media
Cc: kernel-list, mchehab, dave.stevenson, linux-rpi-kernel,
linux-arm-kernel, linux-kernel, laurent.pinchart, naush, lukasz,
devicetree, jeanmichel.hautbois
As of now, imx219 was not supporting anything more than one stream. Add
support for embedded data, based on linux-rpi kernel, and make it work
with multiplexed streams. We have only one source pad with two streams:
stream 0 is the image, and stream 1 is the embedded data.
Signed-off-by: Naushir Patuck <naush@raspberrypi.com>
Signed-off-by: Jean-Michel Hautbois <jeanmichel.hautbois@ideasonboard.com>
---
drivers/media/i2c/imx219.c | 458 ++++++++++++++++++++-----------------
1 file changed, 248 insertions(+), 210 deletions(-)
diff --git a/drivers/media/i2c/imx219.c b/drivers/media/i2c/imx219.c
index e10af3f74b38..d531b67f541b 100644
--- a/drivers/media/i2c/imx219.c
+++ b/drivers/media/i2c/imx219.c
@@ -118,6 +118,16 @@
#define IMX219_PIXEL_ARRAY_WIDTH 3280U
#define IMX219_PIXEL_ARRAY_HEIGHT 2464U
+/* Embedded metadata stream structure */
+#define IMX219_EMBEDDED_LINE_WIDTH 16384
+#define IMX219_NUM_EMBEDDED_LINES 1
+
+enum pad_types {
+ IMAGE_PAD,
+ METADATA_PAD,
+ NUM_PADS
+};
+
struct imx219_reg {
u16 address;
u8 val;
@@ -429,7 +439,7 @@ static const char * const imx219_supply_name[] = {
* - v flip
* - h&v flips
*/
-static const u32 codes[] = {
+static const u32 imx219_mbus_formats[] = {
MEDIA_BUS_FMT_SRGGB10_1X10,
MEDIA_BUS_FMT_SGRBG10_1X10,
MEDIA_BUS_FMT_SGBRG10_1X10,
@@ -655,62 +665,17 @@ static u32 imx219_get_format_code(struct imx219 *imx219, u32 code)
lockdep_assert_held(&imx219->mutex);
- for (i = 0; i < ARRAY_SIZE(codes); i++)
- if (codes[i] == code)
+ for (i = 0; i < ARRAY_SIZE(imx219_mbus_formats); i++)
+ if (imx219_mbus_formats[i] == code)
break;
- if (i >= ARRAY_SIZE(codes))
+ if (i >= ARRAY_SIZE(imx219_mbus_formats))
i = 0;
i = (i & ~3) | (imx219->vflip->val ? 2 : 0) |
(imx219->hflip->val ? 1 : 0);
- return codes[i];
-}
-
-static void imx219_set_default_format(struct imx219 *imx219)
-{
- struct v4l2_mbus_framefmt *fmt;
-
- fmt = &imx219->fmt;
- fmt->code = MEDIA_BUS_FMT_SRGGB10_1X10;
- fmt->colorspace = V4L2_COLORSPACE_SRGB;
- fmt->ycbcr_enc = V4L2_MAP_YCBCR_ENC_DEFAULT(fmt->colorspace);
- fmt->quantization = V4L2_MAP_QUANTIZATION_DEFAULT(true,
- fmt->colorspace,
- fmt->ycbcr_enc);
- fmt->xfer_func = V4L2_MAP_XFER_FUNC_DEFAULT(fmt->colorspace);
- fmt->width = supported_modes[0].width;
- fmt->height = supported_modes[0].height;
- fmt->field = V4L2_FIELD_NONE;
-}
-
-static int imx219_open(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh)
-{
- struct imx219 *imx219 = to_imx219(sd);
- struct v4l2_mbus_framefmt *try_fmt =
- v4l2_subdev_get_try_format(sd, fh->state, 0);
- struct v4l2_rect *try_crop;
-
- mutex_lock(&imx219->mutex);
-
- /* Initialize try_fmt */
- try_fmt->width = supported_modes[0].width;
- try_fmt->height = supported_modes[0].height;
- try_fmt->code = imx219_get_format_code(imx219,
- MEDIA_BUS_FMT_SRGGB10_1X10);
- try_fmt->field = V4L2_FIELD_NONE;
-
- /* Initialize try_crop rectangle. */
- try_crop = v4l2_subdev_get_try_crop(sd, fh->state, 0);
- try_crop->top = IMX219_PIXEL_ARRAY_TOP;
- try_crop->left = IMX219_PIXEL_ARRAY_LEFT;
- try_crop->width = IMX219_PIXEL_ARRAY_WIDTH;
- try_crop->height = IMX219_PIXEL_ARRAY_HEIGHT;
-
- mutex_unlock(&imx219->mutex);
-
- return 0;
+ return imx219_mbus_formats[i];
}
static int imx219_set_ctrl(struct v4l2_ctrl *ctrl)
@@ -802,98 +767,148 @@ static const struct v4l2_ctrl_ops imx219_ctrl_ops = {
.s_ctrl = imx219_set_ctrl,
};
-static int imx219_enum_mbus_code(struct v4l2_subdev *sd,
- struct v4l2_subdev_state *sd_state,
- struct v4l2_subdev_mbus_code_enum *code)
+static void imx219_init_formats(struct v4l2_subdev_state *state)
{
- struct imx219 *imx219 = to_imx219(sd);
+ struct v4l2_mbus_framefmt *format;
+
+ format = v4l2_state_get_stream_format(state, 0, 0);
+ format->code = imx219_mbus_formats[0];
+ format->width = supported_modes[0].width;
+ format->height = supported_modes[0].height;
+ format->field = V4L2_FIELD_NONE;
+ format->colorspace = V4L2_COLORSPACE_RAW;
+
+ if (state->routing.routes[1].flags & V4L2_SUBDEV_ROUTE_FL_ACTIVE) {
+ format = v4l2_state_get_stream_format(state, 0, 1);
+ format->code = MEDIA_BUS_FMT_METADATA_8;
+ format->width = IMX219_EMBEDDED_LINE_WIDTH;
+ format->height = 1;
+ format->field = V4L2_FIELD_NONE;
+ format->colorspace = V4L2_COLORSPACE_DEFAULT;
+ }
+}
- if (code->index >= (ARRAY_SIZE(codes) / 4))
- return -EINVAL;
+static int _imx219_set_routing(struct v4l2_subdev *sd,
+ struct v4l2_subdev_state *state)
+{
+ struct v4l2_subdev_route routes[] = {
+ {
+ .source_pad = 0,
+ .source_stream = 0,
+ .flags = V4L2_SUBDEV_ROUTE_FL_IMMUTABLE |
+ V4L2_SUBDEV_ROUTE_FL_SOURCE |
+ V4L2_SUBDEV_ROUTE_FL_ACTIVE,
+ },
+ {
+ .source_pad = 0,
+ .source_stream = 1,
+ .flags = V4L2_SUBDEV_ROUTE_FL_SOURCE |
+ V4L2_SUBDEV_ROUTE_FL_ACTIVE,
+ }
+ };
- mutex_lock(&imx219->mutex);
- code->code = imx219_get_format_code(imx219, codes[code->index * 4]);
- mutex_unlock(&imx219->mutex);
+ struct v4l2_subdev_krouting routing = {
+ .num_routes = ARRAY_SIZE(routes),
+ .routes = routes,
+ };
+
+ int ret;
+
+ ret = v4l2_subdev_set_routing(sd, state, &routing);
+ if (ret)
+ return ret;
+
+ imx219_init_formats(state);
return 0;
}
-static int imx219_enum_frame_size(struct v4l2_subdev *sd,
- struct v4l2_subdev_state *sd_state,
- struct v4l2_subdev_frame_size_enum *fse)
+static int imx219_set_routing(struct v4l2_subdev *sd,
+ struct v4l2_subdev_state *state,
+ enum v4l2_subdev_format_whence which,
+ struct v4l2_subdev_krouting *routing)
{
- struct imx219 *imx219 = to_imx219(sd);
- u32 code;
+ int ret;
- if (fse->index >= ARRAY_SIZE(supported_modes))
+ if (routing->num_routes == 0 || routing->num_routes > 2)
return -EINVAL;
- mutex_lock(&imx219->mutex);
- code = imx219_get_format_code(imx219, fse->code);
- mutex_unlock(&imx219->mutex);
- if (fse->code != code)
- return -EINVAL;
+ v4l2_subdev_lock_state(state);
- fse->min_width = supported_modes[fse->index].width;
- fse->max_width = fse->min_width;
- fse->min_height = supported_modes[fse->index].height;
- fse->max_height = fse->min_height;
+ ret = _imx219_set_routing(sd, state);
- return 0;
+ v4l2_subdev_unlock_state(state);
+
+ return ret;
}
-static void imx219_reset_colorspace(struct v4l2_mbus_framefmt *fmt)
+static int imx219_init_cfg(struct v4l2_subdev *sd,
+ struct v4l2_subdev_state *state)
{
- fmt->colorspace = V4L2_COLORSPACE_SRGB;
- fmt->ycbcr_enc = V4L2_MAP_YCBCR_ENC_DEFAULT(fmt->colorspace);
- fmt->quantization = V4L2_MAP_QUANTIZATION_DEFAULT(true,
- fmt->colorspace,
- fmt->ycbcr_enc);
- fmt->xfer_func = V4L2_MAP_XFER_FUNC_DEFAULT(fmt->colorspace);
+ int ret;
+
+ v4l2_subdev_lock_state(state);
+
+ ret = _imx219_set_routing(sd, state);
+
+ v4l2_subdev_unlock_state(state);
+
+ return ret;
}
-static void imx219_update_pad_format(struct imx219 *imx219,
- const struct imx219_mode *mode,
- struct v4l2_subdev_format *fmt)
+static int imx219_enum_mbus_code(struct v4l2_subdev *sd,
+ struct v4l2_subdev_state *sd_state,
+ struct v4l2_subdev_mbus_code_enum *code)
{
- fmt->format.width = mode->width;
- fmt->format.height = mode->height;
- fmt->format.field = V4L2_FIELD_NONE;
- imx219_reset_colorspace(&fmt->format);
+ if (code->index >= ARRAY_SIZE(imx219_mbus_formats))
+ return -EINVAL;
+
+ code->code = imx219_mbus_formats[code->index];
+
+ return 0;
}
-static int __imx219_get_pad_format(struct imx219 *imx219,
- struct v4l2_subdev_state *sd_state,
- struct v4l2_subdev_format *fmt)
+static int imx219_enum_frame_size(struct v4l2_subdev *sd,
+ struct v4l2_subdev_state *sd_state,
+ struct v4l2_subdev_frame_size_enum *fse)
{
- if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) {
- struct v4l2_mbus_framefmt *try_fmt =
- v4l2_subdev_get_try_format(&imx219->sd, sd_state,
- fmt->pad);
- /* update the code which could change due to vflip or hflip: */
- try_fmt->code = imx219_get_format_code(imx219, try_fmt->code);
- fmt->format = *try_fmt;
+ unsigned int i;
+
+ if (fse->stream == 0) {
+ for (i = 0; i < ARRAY_SIZE(imx219_mbus_formats); ++i) {
+ if (imx219_mbus_formats[i] == fse->code)
+ break;
+ }
+
+ if (i == ARRAY_SIZE(imx219_mbus_formats))
+ return -EINVAL;
+
+ if (fse->index >= ARRAY_SIZE(supported_modes))
+ return -EINVAL;
+
+ fse->min_width = supported_modes[fse->index].width;
+ fse->max_width = fse->min_width;
+ fse->max_height = supported_modes[fse->index].height;
+ fse->min_height = fse->max_height;
} else {
- imx219_update_pad_format(imx219, imx219->mode, fmt);
- fmt->format.code = imx219_get_format_code(imx219,
- imx219->fmt.code);
+ if (fse->code != MEDIA_BUS_FMT_METADATA_8)
+ return -EINVAL;
+
+ fse->min_width = IMX219_EMBEDDED_LINE_WIDTH;
+ fse->max_width = fse->min_width;
+ fse->min_height = IMX219_NUM_EMBEDDED_LINES;
+ fse->max_height = fse->min_height;
}
return 0;
}
-static int imx219_get_pad_format(struct v4l2_subdev *sd,
- struct v4l2_subdev_state *sd_state,
- struct v4l2_subdev_format *fmt)
+static void imx219_update_metadata_pad_format(struct v4l2_subdev_format *fmt)
{
- struct imx219 *imx219 = to_imx219(sd);
- int ret;
-
- mutex_lock(&imx219->mutex);
- ret = __imx219_get_pad_format(imx219, sd_state, fmt);
- mutex_unlock(&imx219->mutex);
-
- return ret;
+ fmt->format.width = IMX219_EMBEDDED_LINE_WIDTH;
+ fmt->format.height = IMX219_NUM_EMBEDDED_LINES;
+ fmt->format.code = MEDIA_BUS_FMT_METADATA_8;
+ fmt->format.field = V4L2_FIELD_NONE;
}
static int imx219_set_pad_format(struct v4l2_subdev *sd,
@@ -901,82 +916,99 @@ static int imx219_set_pad_format(struct v4l2_subdev *sd,
struct v4l2_subdev_format *fmt)
{
struct imx219 *imx219 = to_imx219(sd);
+ struct i2c_client *client = v4l2_get_subdevdata(&imx219->sd);
const struct imx219_mode *mode;
- struct v4l2_mbus_framefmt *framefmt;
- int exposure_max, exposure_def, hblank;
+ struct v4l2_mbus_framefmt *format;
+ u32 code;
unsigned int i;
+ int ret = 0;
+ int exposure_max, exposure_def, hblank;
- mutex_lock(&imx219->mutex);
+ if (fmt->pad != 0) {
+ dev_err(&client->dev, "%s Could not get pad %d\n", __func__,
+ fmt->pad);
+ return -EINVAL;
+ }
+
+ if (fmt->stream == 1) {
+ /* Only one embedded data mode is supported */
+ imx219_update_metadata_pad_format(fmt);
+ return 0;
+ }
+
+ if (fmt->stream != 0)
+ return -EINVAL;
- for (i = 0; i < ARRAY_SIZE(codes); i++)
- if (codes[i] == fmt->format.code)
+ /*
+ * Validate the media bus code, defaulting to the first one if the
+ * requested code isn't supported.
+ */
+ for (i = 0; i < ARRAY_SIZE(imx219_mbus_formats); ++i) {
+ if (imx219_mbus_formats[i] == fmt->format.code) {
+ code = fmt->format.code;
break;
- if (i >= ARRAY_SIZE(codes))
- i = 0;
+ }
+ }
+
+ if (i == ARRAY_SIZE(imx219_mbus_formats))
+ code = imx219_mbus_formats[0];
/* Bayer order varies with flips */
- fmt->format.code = imx219_get_format_code(imx219, codes[i]);
+ fmt->format.code = imx219_get_format_code(imx219, imx219_mbus_formats[i]);
mode = v4l2_find_nearest_size(supported_modes,
ARRAY_SIZE(supported_modes),
width, height,
- fmt->format.width, fmt->format.height);
- imx219_update_pad_format(imx219, mode, fmt);
- if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) {
- framefmt = v4l2_subdev_get_try_format(sd, sd_state, fmt->pad);
- *framefmt = fmt->format;
- } else if (imx219->mode != mode ||
- imx219->fmt.code != fmt->format.code) {
- imx219->fmt = fmt->format;
- imx219->mode = mode;
- /* Update limits and set FPS to default */
- __v4l2_ctrl_modify_range(imx219->vblank, IMX219_VBLANK_MIN,
- IMX219_VTS_MAX - mode->height, 1,
- mode->vts_def - mode->height);
- __v4l2_ctrl_s_ctrl(imx219->vblank,
- mode->vts_def - mode->height);
- /* Update max exposure while meeting expected vblanking */
- exposure_max = mode->vts_def - 4;
- exposure_def = (exposure_max < IMX219_EXPOSURE_DEFAULT) ?
- exposure_max : IMX219_EXPOSURE_DEFAULT;
- __v4l2_ctrl_modify_range(imx219->exposure,
- imx219->exposure->minimum,
- exposure_max, imx219->exposure->step,
- exposure_def);
- /*
- * Currently PPL is fixed to IMX219_PPL_DEFAULT, so hblank
- * depends on mode->width only, and is not changeble in any
- * way other than changing the mode.
- */
- hblank = IMX219_PPL_DEFAULT - mode->width;
- __v4l2_ctrl_modify_range(imx219->hblank, hblank, hblank, 1,
- hblank);
- }
+ fmt->format.width,
+ fmt->format.height);
- mutex_unlock(&imx219->mutex);
+ v4l2_subdev_lock_state(sd_state);
- return 0;
-}
+ /* Update the stored format and return it. */
+ format = v4l2_state_get_stream_format(sd_state, fmt->pad, fmt->stream);
-static int imx219_set_framefmt(struct imx219 *imx219)
-{
- switch (imx219->fmt.code) {
- case MEDIA_BUS_FMT_SRGGB8_1X8:
- case MEDIA_BUS_FMT_SGRBG8_1X8:
- case MEDIA_BUS_FMT_SGBRG8_1X8:
- case MEDIA_BUS_FMT_SBGGR8_1X8:
- return imx219_write_regs(imx219, raw8_framefmt_regs,
- ARRAY_SIZE(raw8_framefmt_regs));
-
- case MEDIA_BUS_FMT_SRGGB10_1X10:
- case MEDIA_BUS_FMT_SGRBG10_1X10:
- case MEDIA_BUS_FMT_SGBRG10_1X10:
- case MEDIA_BUS_FMT_SBGGR10_1X10:
- return imx219_write_regs(imx219, raw10_framefmt_regs,
- ARRAY_SIZE(raw10_framefmt_regs));
+ if (fmt->which == V4L2_SUBDEV_FORMAT_ACTIVE && imx219->streaming) {
+ ret = -EBUSY;
+ goto done;
}
- return -EINVAL;
+ format->code = code;
+ format->width = mode->width;
+ format->height = mode->height;
+
+ fmt->format = *format;
+
+ /* Update limits and set FPS to default */
+ __v4l2_ctrl_modify_range(imx219->vblank,
+ IMX219_VBLANK_MIN,
+ IMX219_VTS_MAX - mode->height,
+ 1,
+ mode->vts_def - mode->height);
+ __v4l2_ctrl_s_ctrl(imx219->vblank, mode->vts_def - mode->height);
+ /*
+ * Update max exposure while meeting
+ * expected vblanking
+ */
+ exposure_max = mode->vts_def - 4;
+ exposure_def = (exposure_max < IMX219_EXPOSURE_DEFAULT) ?
+ exposure_max : IMX219_EXPOSURE_DEFAULT;
+ __v4l2_ctrl_modify_range(imx219->exposure,
+ imx219->exposure->minimum,
+ exposure_max,
+ imx219->exposure->step,
+ exposure_def);
+ /*
+ * Currently PPL is fixed to IMX219_PPL_DEFAULT, so
+ * hblank depends on mode->width only, and is not
+ * changeble in any way other than changing the mode.
+ */
+ hblank = IMX219_PPL_DEFAULT - mode->width;
+ __v4l2_ctrl_modify_range(imx219->hblank, hblank, hblank, 1, hblank);
+
+done:
+ v4l2_subdev_unlock_state(sd_state);
+
+ return ret;
}
static const struct v4l2_rect *
@@ -1037,9 +1069,11 @@ static int imx219_start_streaming(struct imx219 *imx219)
const struct imx219_reg_list *reg_list;
int ret;
- ret = pm_runtime_resume_and_get(&client->dev);
- if (ret < 0)
+ ret = pm_runtime_get_sync(&client->dev);
+ if (ret < 0) {
+ pm_runtime_put_noidle(&client->dev);
return ret;
+ }
/* Apply default values of current mode */
reg_list = &imx219->mode->reg_list;
@@ -1049,13 +1083,6 @@ static int imx219_start_streaming(struct imx219 *imx219)
goto err_rpm_put;
}
- ret = imx219_set_framefmt(imx219);
- if (ret) {
- dev_err(&client->dev, "%s failed to set frame format: %d\n",
- __func__, ret);
- goto err_rpm_put;
- }
-
/* Apply customized values from user */
ret = __v4l2_ctrl_handler_setup(imx219->sd.ctrl_handler);
if (ret)
@@ -1133,21 +1160,22 @@ static int imx219_set_stream(struct v4l2_subdev *sd, int enable)
/* Power/clock management functions */
static int imx219_power_on(struct device *dev)
{
- struct v4l2_subdev *sd = dev_get_drvdata(dev);
+ struct i2c_client *client = to_i2c_client(dev);
+ struct v4l2_subdev *sd = i2c_get_clientdata(client);
struct imx219 *imx219 = to_imx219(sd);
int ret;
ret = regulator_bulk_enable(IMX219_NUM_SUPPLIES,
imx219->supplies);
if (ret) {
- dev_err(dev, "%s: failed to enable regulators\n",
+ dev_err(&client->dev, "%s: failed to enable regulators\n",
__func__);
return ret;
}
ret = clk_prepare_enable(imx219->xclk);
if (ret) {
- dev_err(dev, "%s: failed to enable clock\n",
+ dev_err(&client->dev, "%s: failed to enable clock\n",
__func__);
goto reg_off;
}
@@ -1166,7 +1194,8 @@ static int imx219_power_on(struct device *dev)
static int imx219_power_off(struct device *dev)
{
- struct v4l2_subdev *sd = dev_get_drvdata(dev);
+ struct i2c_client *client = to_i2c_client(dev);
+ struct v4l2_subdev *sd = i2c_get_clientdata(client);
struct imx219 *imx219 = to_imx219(sd);
gpiod_set_value_cansleep(imx219->reset_gpio, 0);
@@ -1178,7 +1207,8 @@ static int imx219_power_off(struct device *dev)
static int __maybe_unused imx219_suspend(struct device *dev)
{
- struct v4l2_subdev *sd = dev_get_drvdata(dev);
+ struct i2c_client *client = to_i2c_client(dev);
+ struct v4l2_subdev *sd = i2c_get_clientdata(client);
struct imx219 *imx219 = to_imx219(sd);
if (imx219->streaming)
@@ -1189,7 +1219,8 @@ static int __maybe_unused imx219_suspend(struct device *dev)
static int __maybe_unused imx219_resume(struct device *dev)
{
- struct v4l2_subdev *sd = dev_get_drvdata(dev);
+ struct i2c_client *client = to_i2c_client(dev);
+ struct v4l2_subdev *sd = i2c_get_clientdata(client);
struct imx219 *imx219 = to_imx219(sd);
int ret;
@@ -1255,11 +1286,13 @@ static const struct v4l2_subdev_video_ops imx219_video_ops = {
};
static const struct v4l2_subdev_pad_ops imx219_pad_ops = {
- .enum_mbus_code = imx219_enum_mbus_code,
- .get_fmt = imx219_get_pad_format,
- .set_fmt = imx219_set_pad_format,
- .get_selection = imx219_get_selection,
- .enum_frame_size = imx219_enum_frame_size,
+ .init_cfg = imx219_init_cfg,
+ .enum_mbus_code = imx219_enum_mbus_code,
+ .get_fmt = v4l2_subdev_get_fmt,
+ .set_fmt = imx219_set_pad_format,
+ .get_selection = imx219_get_selection,
+ .set_routing = imx219_set_routing,
+ .enum_frame_size = imx219_enum_frame_size,
};
static const struct v4l2_subdev_ops imx219_subdev_ops = {
@@ -1268,10 +1301,6 @@ static const struct v4l2_subdev_ops imx219_subdev_ops = {
.pad = &imx219_pad_ops,
};
-static const struct v4l2_subdev_internal_ops imx219_internal_ops = {
- .open = imx219_open,
-};
-
/* Initialize control handlers */
static int imx219_init_controls(struct imx219 *imx219)
{
@@ -1446,6 +1475,7 @@ static int imx219_check_hwcfg(struct device *dev)
static int imx219_probe(struct i2c_client *client)
{
struct device *dev = &client->dev;
+ struct v4l2_subdev *sd;
struct imx219 *imx219;
int ret;
@@ -1453,7 +1483,8 @@ static int imx219_probe(struct i2c_client *client)
if (!imx219)
return -ENOMEM;
- v4l2_i2c_subdev_init(&imx219->sd, client, &imx219_subdev_ops);
+ sd = &imx219->sd;
+ v4l2_i2c_subdev_init(sd, client, &imx219_subdev_ops);
/* Check the hardware configuration in device tree */
if (imx219_check_hwcfg(dev))
@@ -1520,27 +1551,29 @@ static int imx219_probe(struct i2c_client *client)
goto error_power_off;
/* Initialize subdev */
- imx219->sd.internal_ops = &imx219_internal_ops;
- imx219->sd.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE |
- V4L2_SUBDEV_FL_HAS_EVENTS;
- imx219->sd.entity.function = MEDIA_ENT_F_CAM_SENSOR;
+ sd->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE |
+ V4L2_SUBDEV_FL_HAS_EVENTS |
+ V4L2_SUBDEV_FL_MULTIPLEXED;
- /* Initialize source pad */
+ /* Initialize the media entity. */
imx219->pad.flags = MEDIA_PAD_FL_SOURCE;
-
- /* Initialize default format */
- imx219_set_default_format(imx219);
-
- ret = media_entity_pads_init(&imx219->sd.entity, 1, &imx219->pad);
+ sd->entity.function = MEDIA_ENT_F_CAM_SENSOR;
+ ret = media_entity_pads_init(&sd->entity, 1, &imx219->pad);
if (ret) {
dev_err(dev, "failed to init entity pads: %d\n", ret);
goto error_handler_free;
}
- ret = v4l2_async_register_subdev_sensor(&imx219->sd);
+ ret = v4l2_subdev_init_finalize(sd);
+ if (ret) {
+ dev_err(dev, "failed to finalize sensor init: %d\n", ret);
+ goto error_media_entity;
+ }
+
+ ret = v4l2_async_register_subdev_sensor(sd);
if (ret < 0) {
dev_err(dev, "failed to register sensor sub-device: %d\n", ret);
- goto error_media_entity;
+ goto error_free_state;
}
/* Enable runtime PM and turn off the device */
@@ -1550,6 +1583,8 @@ static int imx219_probe(struct i2c_client *client)
return 0;
+error_free_state:
+ v4l2_subdev_cleanup(sd);
error_media_entity:
media_entity_cleanup(&imx219->sd.entity);
@@ -1568,6 +1603,9 @@ static int imx219_remove(struct i2c_client *client)
struct imx219 *imx219 = to_imx219(sd);
v4l2_async_unregister_subdev(sd);
+
+ v4l2_subdev_cleanup(sd);
+
media_entity_cleanup(&sd->entity);
imx219_free_controls(imx219);
--
2.32.0
^ permalink raw reply related [flat|nested] 6+ messages in thread
* Re: [RFC PATCH 1/3] media: dt-bindings: media: Add bindings for bcm2835-unicam
2022-01-12 17:27 ` [RFC PATCH 1/3] media: dt-bindings: media: Add bindings for bcm2835-unicam Jean-Michel Hautbois
@ 2022-01-12 18:34 ` Laurent Pinchart
2022-01-13 16:29 ` Rob Herring
1 sibling, 0 replies; 6+ messages in thread
From: Laurent Pinchart @ 2022-01-12 18:34 UTC (permalink / raw)
To: Jean-Michel Hautbois
Cc: linux-media, kernel-list, mchehab, dave.stevenson,
linux-rpi-kernel, linux-arm-kernel, linux-kernel, naush, lukasz,
devicetree
Hi Jean-Michel,
Thank you for the patch.
On Wed, Jan 12, 2022 at 06:27:18PM +0100, Jean-Michel Hautbois wrote:
> Introduce the dt-bindinds documentation for bcm2835 CCP2/CSI2 camera
> interface. Also add a MAINTAINERS entry for it.
>
> Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
> Signed-off-by: Naushir Patuck <naush@raspberrypi.com>
> Signed-off-by: Jean-Michel Hautbois <jeanmichel.hautbois@ideasonboard.com>
> ---
> Dave: I assumed you were the maintainer for this file, as I based it on the
> bcm2835-unicam.txt file. Are you happy to be added directly as the
> maintainer, or should this be specified as "Raspberry Pi Kernel
> Maintenance <kernel-list@raspberrypi.com>"
> ---
> .../bindings/media/brcm,bcm2835-unicam.yaml | 103 ++++++++++++++++++
> MAINTAINERS | 6 +
> 2 files changed, 109 insertions(+)
> create mode 100644 Documentation/devicetree/bindings/media/brcm,bcm2835-unicam.yaml
>
> diff --git a/Documentation/devicetree/bindings/media/brcm,bcm2835-unicam.yaml b/Documentation/devicetree/bindings/media/brcm,bcm2835-unicam.yaml
> new file mode 100644
> index 000000000000..1427514142cf
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/media/brcm,bcm2835-unicam.yaml
> @@ -0,0 +1,103 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/media/brcm,bcm2835-unicam.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Broadcom BCM283x Camera Interface (Unicam)
> +
> +maintainers:
> + - Dave Stevenson <dave.stevenson@raspberrypi.com>
> +
> +description: |-
> + The Unicam block on BCM283x SoCs is the receiver for either
> + CSI-2 or CCP2 data from image sensors or similar devices.
> +
> + The main platform using this SoC is the Raspberry Pi family of boards.
> + On the Pi the VideoCore firmware can also control this hardware block,
> + and driving it from two different processors will cause issues.
> + To avoid this, the firmware checks the device tree configuration
> + during boot. If it finds device tree nodes called csi0 or csi1 then
> + it will stop the firmware accessing the block, and it can then
> + safely be used via the device tree binding.
> +
> +properties:
> + compatible:
> + const: brcm,bcm2835-unicam
> +
> + reg:
> + description:
> + physical base address and length of the register sets for the device.
You can drop the description, that's the default for the reg property.
> + maxItems: 1
> +
> + interrupts:
> + description: the IRQ line for this Unicam instance.
Same here.
> + maxItems: 1
> +
> + clocks:
> + description: |-
> + list of clock specifiers, corresponding to entries in clock-names
> + property.
Same here, but a description of each entry would be useful.
clocks:
items:
- description: Clock for foo.
- description: Clock for bar.
> +
> + clock-names:
> + items:
> + - const: lp
> + - const: vpu
> +
> + port:
> + $ref: /schemas/graph.yaml#/properties/port
You need to use port-base and list the valid endpoint properties.
> +
> +required:
> + - compatible
> + - reg
> + - interrupts
> + - clocks
> + - clock-names
> + - port
> +
> +additionalProperties: False
s/False/false/
> +
> +examples:
> + - |
Does this validate without #include'ing headers that define the
BCM2835_CLOCK_CAM1 macro ?
> + csi1: csi1@7e801000 {
You can drop the label.
> + compatible = "brcm,bcm2835-unicam";
> + reg = <0x7e801000 0x800>,
> + <0x7e802004 0x4>;
That's two items, while the bindings document one item only. Please run
the DT bindings validation, it will validate the examples.
> + interrupts = <2 7>;
On RPi 4 don't we need 3 interrupt cells ?
> + clocks = <&clocks BCM2835_CLOCK_CAM1>,
> + <&firmware_clocks 4>;
> + clock-names = "lp", "vpu";
A blank line would be good here.
> + port {
> + csi1_ep: endpoint {
Inconsistent indentation. Same below.
> + remote-endpoint = <&tc358743_0>;
> + data-lanes = <1 2>;
> + };
> + };
> + };
> +
> + i2c0: i2c@7e205000 {
> + tc358743: csi-hdmi-bridge@0f {
You can drop those two labels.
> + compatible = "toshiba,tc358743";
This isn't documented upstream in yaml. How about using an imx219 sensor
instead ?
> + reg = <0x0f>;
> + clocks = <&tc358743_clk>;
> + clock-names = "refclk";
> +
> + tc358743_clk: bridge-clk {
> + compatible = "fixed-clock";
> + #clock-cells = <0>;
> + clock-frequency = <27000000>;
> + };
You can drop this, there's no need to declare the clock in the example.
> +
> + port {
> + tc358743_0: endpoint {
> + remote-endpoint = <&csi1_ep>;
> + clock-lanes = <0>;
> + data-lanes = <1 2>;
> + clock-noncontinuous;
> + link-frequencies =
> + /bits/ 64 <297000000>;
> + };
> + };
> + };
> + };
> +...
> diff --git a/MAINTAINERS b/MAINTAINERS
> index 269aa4d6b94a..7484255cad31 100644
> --- a/MAINTAINERS
> +++ b/MAINTAINERS
> @@ -3653,6 +3653,12 @@ N: bcm113*
> N: bcm216*
> N: kona
>
> +BROADCOM BCM2835 CAMERA DRIVER
> +M: Raspberry Pi Kernel Maintenance <kernel-list@raspberrypi.com>
> +L: linux-media@vger.kernel.org
> +S: Maintained
> +F: Documentation/devicetree/bindings/media/brcm,bcm2835-unicam.yaml
> +
> BROADCOM BCM47XX MIPS ARCHITECTURE
> M: Hauke Mehrtens <hauke@hauke-m.de>
> M: Rafał Miłecki <zajec5@gmail.com>
--
Regards,
Laurent Pinchart
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [RFC PATCH 1/3] media: dt-bindings: media: Add bindings for bcm2835-unicam
2022-01-12 17:27 ` [RFC PATCH 1/3] media: dt-bindings: media: Add bindings for bcm2835-unicam Jean-Michel Hautbois
2022-01-12 18:34 ` Laurent Pinchart
@ 2022-01-13 16:29 ` Rob Herring
1 sibling, 0 replies; 6+ messages in thread
From: Rob Herring @ 2022-01-13 16:29 UTC (permalink / raw)
To: Jean-Michel Hautbois
Cc: linux-rpi-kernel, kernel-list, linux-kernel, naush,
dave.stevenson, linux-arm-kernel, mchehab, laurent.pinchart,
lukasz, linux-media, devicetree
On Wed, 12 Jan 2022 18:27:18 +0100, Jean-Michel Hautbois wrote:
> Introduce the dt-bindinds documentation for bcm2835 CCP2/CSI2 camera
> interface. Also add a MAINTAINERS entry for it.
>
> Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
> Signed-off-by: Naushir Patuck <naush@raspberrypi.com>
> Signed-off-by: Jean-Michel Hautbois <jeanmichel.hautbois@ideasonboard.com>
> ---
> Dave: I assumed you were the maintainer for this file, as I based it on the
> bcm2835-unicam.txt file. Are you happy to be added directly as the
> maintainer, or should this be specified as "Raspberry Pi Kernel
> Maintenance <kernel-list@raspberrypi.com>"
> ---
> .../bindings/media/brcm,bcm2835-unicam.yaml | 103 ++++++++++++++++++
> MAINTAINERS | 6 +
> 2 files changed, 109 insertions(+)
> create mode 100644 Documentation/devicetree/bindings/media/brcm,bcm2835-unicam.yaml
>
My bot found errors running 'make DT_CHECKER_FLAGS=-m dt_binding_check'
on your patch (DT_CHECKER_FLAGS is new in v5.13):
yamllint warnings/errors:
dtschema/dtc warnings/errors:
Error: Documentation/devicetree/bindings/media/brcm,bcm2835-unicam.example.dts:24.31-32 syntax error
FATAL ERROR: Unable to parse input tree
make[1]: *** [scripts/Makefile.lib:373: Documentation/devicetree/bindings/media/brcm,bcm2835-unicam.example.dt.yaml] Error 1
make[1]: *** Waiting for unfinished jobs....
make: *** [Makefile:1413: dt_binding_check] Error 2
doc reference errors (make refcheckdocs):
See https://patchwork.ozlabs.org/patch/1579262
This check can fail if there are any dependencies. The base for a patch
series is generally the most recent rc1.
If you already ran 'make dt_binding_check' and didn't see the above
error(s), then make sure 'yamllint' is installed and dt-schema is up to
date:
pip3 install dtschema --upgrade
Please check and re-submit.
^ permalink raw reply [flat|nested] 6+ messages in thread
end of thread, other threads:[~2022-01-13 16:29 UTC | newest]
Thread overview: 6+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2022-01-12 17:27 [RFC PATCH 0/3] Add support for BCM2835 camera interface (unicam) Jean-Michel Hautbois
2022-01-12 17:27 ` [RFC PATCH 1/3] media: dt-bindings: media: Add bindings for bcm2835-unicam Jean-Michel Hautbois
2022-01-12 18:34 ` Laurent Pinchart
2022-01-13 16:29 ` Rob Herring
2022-01-12 17:27 ` [RFC PATCH 2/3] media: bcm2835-unicam: Add support for for CCP2/CSI2 camera interface Jean-Michel Hautbois
2022-01-12 17:27 ` [RFC PATCH 3/3] media: imx219: Add support for multiplexed streams Jean-Michel Hautbois
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