From: Hans Verkuil <hverkuil@xs4all.nl>
To: Laurent Pinchart <laurent.pinchart@ideasonboard.com>,
linux-media@vger.kernel.org
Cc: "Kieran Bingham" <kieran.bingham@ideasonboard.com>,
"Jacopo Mondi" <jacopo@jmondi.org>,
"Niklas Söderlund" <niklas.soderlund@ragnatech.se>,
"Naushir Patuck" <naush@raspberrypi.com>,
"Dave Stevenson" <dave.stevenson@raspberrypi.com>
Subject: Re: [PATCH v2 04/34] media: bcm2835-unicam: Driver for CCP2/CSI2 camera interface
Date: Mon, 4 May 2020 17:21:01 +0200 [thread overview]
Message-ID: <3d55af61-cfce-6b7a-1b1a-3bfb47380c91@xs4all.nl> (raw)
In-Reply-To: <20200504092611.9798-5-laurent.pinchart@ideasonboard.com>
Some quick review comments:
On 04/05/2020 11:25, Laurent Pinchart wrote:
> From: Naushir Patuck <naush@raspberrypi.com>
>
> Add a driver for the Unicam camera receiver block on BCM283x processors.
> Compared to the bcm2835-camera driver present in staging, this driver
> handles the Unicam block only (CSI-2 receiver), and doesn't depend on
> the VC4 firmware running on the VPU.
>
> The commit is made up of a series of changes cherry-picked from the
> rpi-5.4.y branch of https://github.com/raspberrypi/linux/ with
> additional enhancements, forward-ported to the mainline kernel.
>
> Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
> Signed-off-by: Naushir Patuck <naush@raspberrypi.com>
> Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
> ---
> Changes since v1:
>
> - Re-fetch mbus code from subdev on a g_fmt call
> - Group all ioctl disabling together
> - Fix reference counting in unicam_open
> - Add support for VIDIOC_[S|G]_SELECTION
> ---
> MAINTAINERS | 7 +
> drivers/media/platform/Kconfig | 1 +
> drivers/media/platform/Makefile | 2 +
> drivers/media/platform/bcm2835/Kconfig | 15 +
> drivers/media/platform/bcm2835/Makefile | 3 +
> .../media/platform/bcm2835/bcm2835-unicam.c | 2825 +++++++++++++++++
> .../media/platform/bcm2835/vc4-regs-unicam.h | 253 ++
> 7 files changed, 3106 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 b816a453b10e..edf5b8d9c98a 100644
> --- a/MAINTAINERS
> +++ b/MAINTAINERS
> @@ -3341,6 +3341,13 @@ 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: drivers/media/platform/bcm2835/
> +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>
> diff --git a/drivers/media/platform/Kconfig b/drivers/media/platform/Kconfig
> index e01bbb9dd1c1..98721a4e0be1 100644
> --- a/drivers/media/platform/Kconfig
> +++ b/drivers/media/platform/Kconfig
> @@ -146,6 +146,7 @@ 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 d13db96e3015..a425e4d2e3f3 100644
> --- a/drivers/media/platform/Makefile
> +++ b/drivers/media/platform/Makefile
> @@ -98,4 +98,6 @@ obj-y += meson/
>
> obj-y += cros-ec-cec/
>
> +obj-y += bcm2835/
> +
> obj-y += sunxi/
> diff --git a/drivers/media/platform/bcm2835/Kconfig b/drivers/media/platform/bcm2835/Kconfig
> new file mode 100644
> index 000000000000..ec46e3ef053c
> --- /dev/null
> +++ b/drivers/media/platform/bcm2835/Kconfig
> @@ -0,0 +1,15 @@
> +# Broadcom VideoCore4 V4L2 camera support
> +
> +config VIDEO_BCM2835_UNICAM
> + tristate "Broadcom BCM2835 Unicam video capture driver"
> + depends on VIDEO_V4L2 && VIDEO_V4L2_SUBDEV_API && MEDIA_CONTROLLER
> + depends on ARCH_BCM2835 || COMPILE_TEST
> + select VIDEOBUF2_DMA_CONTIG
> + select V4L2_FWNODE
> + help
> + Say Y here to enable support for the BCM2835 CSI-2 receiver. This is a
> + V4L2 driver that controls the CSI-2 receiver directly, independently
> + from the VC4 firmware.
> +
> + 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..2e9387cbc1e0
> --- /dev/null
> +++ b/drivers/media/platform/bcm2835/bcm2835-unicam.c
> @@ -0,0 +1,2825 @@
> +// SPDX-License-Identifier: GPL-2.0-only
> +/*
> + * BCM2835 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.
Very useful information. Should perhaps be added to the Kconfig description
as well.
> + */
> +
> +#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 "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)
> +
> +/*
> + * 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 8192
> +
> +/*
> + * 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)
> +
> +enum pad_types {
> + IMAGE_PAD,
> + METADATA_PAD,
> + MAX_NODES
> +};
> +
> +/*
> + * 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.
> + * @check_variants: Flag to denote that there are multiple mediabus formats
> + * still in the list that could match this V4L2 format.
> + */
> +struct unicam_fmt {
> + u32 fourcc;
> + u32 repacked_fourcc;
> + u32 code;
> + u8 depth;
> + u8 csi_dt;
> + u8 check_variants;
> +};
> +
> +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,
> + }, {
> + .fourcc = V4L2_PIX_FMT_UYVY,
> + .code = MEDIA_BUS_FMT_UYVY8_2X8,
> + .depth = 16,
> + .csi_dt = 0x1e,
> + .check_variants = 1,
> + }, {
> + .fourcc = V4L2_PIX_FMT_YVYU,
> + .code = MEDIA_BUS_FMT_YVYU8_2X8,
> + .depth = 16,
> + .csi_dt = 0x1e,
> + .check_variants = 1,
> + }, {
> + .fourcc = V4L2_PIX_FMT_VYUY,
> + .code = MEDIA_BUS_FMT_VYUY8_2X8,
> + .depth = 16,
> + .csi_dt = 0x1e,
> + .check_variants = 1,
> + }, {
> + .fourcc = V4L2_PIX_FMT_YUYV,
> + .code = MEDIA_BUS_FMT_YUYV8_1X16,
> + .depth = 16,
> + .csi_dt = 0x1e,
> + }, {
> + .fourcc = V4L2_PIX_FMT_UYVY,
> + .code = MEDIA_BUS_FMT_UYVY8_1X16,
> + .depth = 16,
> + .csi_dt = 0x1e,
> + }, {
> + .fourcc = V4L2_PIX_FMT_YVYU,
> + .code = MEDIA_BUS_FMT_YVYU8_1X16,
> + .depth = 16,
> + .csi_dt = 0x1e,
> + }, {
> + .fourcc = V4L2_PIX_FMT_VYUY,
> + .code = MEDIA_BUS_FMT_VYUY8_1X16,
> + .depth = 16,
> + .csi_dt = 0x1e,
> + }, {
> + /* RGB Formats */
> + .fourcc = V4L2_PIX_FMT_RGB565, /* gggbbbbb rrrrrggg */
> + .code = MEDIA_BUS_FMT_RGB565_2X8_LE,
> + .depth = 16,
> + .csi_dt = 0x22,
> + }, {
> + .fourcc = V4L2_PIX_FMT_RGB565X, /* rrrrrggg gggbbbbb */
> + .code = MEDIA_BUS_FMT_RGB565_2X8_BE,
> + .depth = 16,
> + .csi_dt = 0x22
> + }, {
> + .fourcc = V4L2_PIX_FMT_RGB555, /* gggbbbbb arrrrrgg */
> + .code = MEDIA_BUS_FMT_RGB555_2X8_PADHI_LE,
> + .depth = 16,
> + .csi_dt = 0x21,
> + }, {
> + .fourcc = V4L2_PIX_FMT_RGB555X, /* arrrrrgg gggbbbbb */
> + .code = MEDIA_BUS_FMT_RGB555_2X8_PADHI_BE,
> + .depth = 16,
> + .csi_dt = 0x21,
> + }, {
> + .fourcc = V4L2_PIX_FMT_RGB24, /* rgb */
> + .code = MEDIA_BUS_FMT_RGB888_1X24,
> + .depth = 24,
> + .csi_dt = 0x24,
> + }, {
> + .fourcc = V4L2_PIX_FMT_BGR24, /* bgr */
> + .code = MEDIA_BUS_FMT_BGR888_1X24,
> + .depth = 24,
> + .csi_dt = 0x24,
> + }, {
> + .fourcc = V4L2_PIX_FMT_RGB32, /* argb */
> + .code = MEDIA_BUS_FMT_ARGB8888_1X32,
> + .depth = 32,
> + .csi_dt = 0x0,
> + }, {
> + /* Bayer Formats */
> + .fourcc = V4L2_PIX_FMT_SBGGR8,
> + .code = MEDIA_BUS_FMT_SBGGR8_1X8,
> + .depth = 8,
> + .csi_dt = 0x2a,
> + }, {
> + .fourcc = V4L2_PIX_FMT_SGBRG8,
> + .code = MEDIA_BUS_FMT_SGBRG8_1X8,
> + .depth = 8,
> + .csi_dt = 0x2a,
> + }, {
> + .fourcc = V4L2_PIX_FMT_SGRBG8,
> + .code = MEDIA_BUS_FMT_SGRBG8_1X8,
> + .depth = 8,
> + .csi_dt = 0x2a,
> + }, {
> + .fourcc = V4L2_PIX_FMT_SRGGB8,
> + .code = MEDIA_BUS_FMT_SRGGB8_1X8,
> + .depth = 8,
> + .csi_dt = 0x2a,
> + }, {
> + .fourcc = V4L2_PIX_FMT_SBGGR10P,
> + .repacked_fourcc = V4L2_PIX_FMT_SBGGR10,
> + .code = MEDIA_BUS_FMT_SBGGR10_1X10,
> + .depth = 10,
> + .csi_dt = 0x2b,
> + }, {
> + .fourcc = V4L2_PIX_FMT_SGBRG10P,
> + .repacked_fourcc = V4L2_PIX_FMT_SGBRG10,
> + .code = MEDIA_BUS_FMT_SGBRG10_1X10,
> + .depth = 10,
> + .csi_dt = 0x2b,
> + }, {
> + .fourcc = V4L2_PIX_FMT_SGRBG10P,
> + .repacked_fourcc = V4L2_PIX_FMT_SGRBG10,
> + .code = MEDIA_BUS_FMT_SGRBG10_1X10,
> + .depth = 10,
> + .csi_dt = 0x2b,
> + }, {
> + .fourcc = V4L2_PIX_FMT_SRGGB10P,
> + .repacked_fourcc = V4L2_PIX_FMT_SRGGB10,
> + .code = MEDIA_BUS_FMT_SRGGB10_1X10,
> + .depth = 10,
> + .csi_dt = 0x2b,
> + }, {
> + .fourcc = V4L2_PIX_FMT_SBGGR12P,
> + .repacked_fourcc = V4L2_PIX_FMT_SBGGR12,
> + .code = MEDIA_BUS_FMT_SBGGR12_1X12,
> + .depth = 12,
> + .csi_dt = 0x2c,
> + }, {
> + .fourcc = V4L2_PIX_FMT_SGBRG12P,
> + .repacked_fourcc = V4L2_PIX_FMT_SGBRG12,
> + .code = MEDIA_BUS_FMT_SGBRG12_1X12,
> + .depth = 12,
> + .csi_dt = 0x2c,
> + }, {
> + .fourcc = V4L2_PIX_FMT_SGRBG12P,
> + .repacked_fourcc = V4L2_PIX_FMT_SGRBG12,
> + .code = MEDIA_BUS_FMT_SGRBG12_1X12,
> + .depth = 12,
> + .csi_dt = 0x2c,
> + }, {
> + .fourcc = V4L2_PIX_FMT_SRGGB12P,
> + .repacked_fourcc = V4L2_PIX_FMT_SRGGB12,
> + .code = MEDIA_BUS_FMT_SRGGB12_1X12,
> + .depth = 12,
> + .csi_dt = 0x2c,
> + }, {
> + .fourcc = V4L2_PIX_FMT_SBGGR14P,
> + .code = MEDIA_BUS_FMT_SBGGR14_1X14,
> + .depth = 14,
> + .csi_dt = 0x2d,
> + }, {
> + .fourcc = V4L2_PIX_FMT_SGBRG14P,
> + .code = MEDIA_BUS_FMT_SGBRG14_1X14,
> + .depth = 14,
> + .csi_dt = 0x2d,
> + }, {
> + .fourcc = V4L2_PIX_FMT_SGRBG14P,
> + .code = MEDIA_BUS_FMT_SGRBG14_1X14,
> + .depth = 14,
> + .csi_dt = 0x2d,
> + }, {
> + .fourcc = V4L2_PIX_FMT_SRGGB14P,
> + .code = MEDIA_BUS_FMT_SRGGB14_1X14,
> + .depth = 14,
> + .csi_dt = 0x2d,
> + }, {
> + /*
> + * 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,
> + }, {
> + .fourcc = V4L2_PIX_FMT_Y10P,
> + .repacked_fourcc = V4L2_PIX_FMT_Y10,
> + .code = MEDIA_BUS_FMT_Y10_1X10,
> + .depth = 10,
> + .csi_dt = 0x2b,
> + }, {
> + /* NB There is no packed V4L2 fourcc for this format. */
> + .repacked_fourcc = V4L2_PIX_FMT_Y12,
> + .code = MEDIA_BUS_FMT_Y12_1X12,
> + .depth = 12,
> + .csi_dt = 0x2c,
> + },
> + /* Embedded data format */
> + {
> + .fourcc = V4L2_META_FMT_SENSOR_DATA,
> + .code = MEDIA_BUS_FMT_SENSOR_DATA,
> + .depth = 8,
> + }
> +};
> +
> +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 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;
> + /*
> + * 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;
> + /* clock handle */
> + struct clk *clock;
> + /* 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_pad_config *sensor_config;
> +
> + 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;
> +};
> +
> +static inline struct unicam_device *
> +to_unicam_device(struct v4l2_device *v4l2_dev)
> +{
> + return container_of(v4l2_dev, struct unicam_device, v4l2_dev);
> +}
> +
> +/* 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 int check_mbus_format(struct unicam_device *dev,
> + const struct unicam_fmt *format)
> +{
> + unsigned int i;
> + int ret = 0;
> +
> + for (i = 0; !ret && i < MAX_ENUM_MBUS_CODE; i++) {
> + struct v4l2_subdev_mbus_code_enum mbus_code = {
> + .index = i,
> + .pad = IMAGE_PAD,
> + .which = V4L2_SUBDEV_FORMAT_ACTIVE,
> + };
> +
> + ret = v4l2_subdev_call(dev->sensor, pad, enum_mbus_code,
> + NULL, &mbus_code);
> +
> + if (!ret && mbus_code.code == format->code)
> + return 1;
> + }
> +
> + return 0;
> +}
> +
> +static const struct unicam_fmt *find_format_by_pix(struct unicam_device *dev,
> + u32 pixelformat)
> +{
> + unsigned int i;
> +
> + for (i = 0; i < ARRAY_SIZE(formats); i++) {
> + if (formats[i].fourcc == pixelformat ||
> + formats[i].repacked_fourcc == pixelformat) {
> + if (formats[i].check_variants &&
> + !check_mbus_format(dev, &formats[i]))
> + continue;
> + return &formats[i];
> + }
> + }
> +
> + return NULL;
> +}
> +
> +static inline unsigned int bytes_per_line(u32 width,
I'd drop inline, there is no compelling reason for having this as
an inline function IMHO.
> + 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 __subdev_get_format(struct unicam_device *dev,
> + struct v4l2_mbus_framefmt *fmt, int pad_id)
> +{
> + struct v4l2_subdev_format sd_fmt = {
> + .which = V4L2_SUBDEV_FORMAT_ACTIVE,
> + .pad = pad_id
> + };
> + int ret;
> +
> + ret = v4l2_subdev_call(dev->sensor, pad, get_fmt, dev->sensor_config,
> + &sd_fmt);
> + if (ret < 0)
> + return ret;
> +
> + *fmt = sd_fmt.format;
> +
> + unicam_dbg(1, dev, "%s %dx%d code:%04x\n", __func__,
> + fmt->width, fmt->height, fmt->code);
> +
> + return 0;
> +}
> +
> +static int __subdev_set_format(struct unicam_device *dev,
> + struct v4l2_mbus_framefmt *fmt, int pad_id)
> +{
> + struct v4l2_subdev_format sd_fmt = {
> + .which = V4L2_SUBDEV_FORMAT_ACTIVE,
> + .pad = pad_id
> + };
> + int ret;
> +
> + sd_fmt.format = *fmt;
> +
> + ret = v4l2_subdev_call(dev->sensor, pad, set_fmt, dev->sensor_config,
> + &sd_fmt);
> + if (ret < 0)
> + return ret;
> +
> + *fmt = sd_fmt.format;
> +
> + if (pad_id == IMAGE_PAD)
> + unicam_dbg(1, dev, "%s %dx%d code:%04x\n", __func__, fmt->width,
> + fmt->height, fmt->code);
> + else
> + unicam_dbg(1, dev, "%s Embedded data code:%04x\n", __func__,
> + sd_fmt.format.code);
> +
> + return 0;
> +}
> +
> +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 int unicam_reset_format(struct unicam_node *node)
> +{
> + struct unicam_device *dev = node->dev;
> + struct v4l2_mbus_framefmt mbus_fmt;
> + int ret;
> +
> + if (dev->sensor_embedded_data || node->pad_id != METADATA_PAD) {
> + ret = __subdev_get_format(dev, &mbus_fmt, node->pad_id);
> + if (ret) {
> + unicam_err(dev, "Failed to get_format - ret %d\n", ret);
> + return ret;
> + }
> +
> + if (mbus_fmt.code != node->fmt->code) {
> + unicam_err(dev, "code mismatch - fmt->code %08x, mbus_fmt.code %08x\n",
> + node->fmt->code, mbus_fmt.code);
> + return ret;
> + }
> + }
> +
> + if (node->pad_id == IMAGE_PAD) {
> + v4l2_fill_pix_format(&node->v_fmt.fmt.pix, &mbus_fmt);
> + node->v_fmt.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
> + unicam_calc_format_size_bpl(dev, node->fmt, &node->v_fmt);
> + } else {
> + node->v_fmt.type = V4L2_BUF_TYPE_META_CAPTURE;
> + node->v_fmt.fmt.meta.dataformat = V4L2_META_FMT_SENSOR_DATA;
> + if (dev->sensor_embedded_data) {
> + node->v_fmt.fmt.meta.buffersize =
> + mbus_fmt.width * mbus_fmt.height;
> + node->embedded_lines = mbus_fmt.height;
> + } else {
> + node->v_fmt.fmt.meta.buffersize = UNICAM_EMBEDDED_SIZE;
> + node->embedded_lines = 1;
> + }
> + }
> +
> + node->m_fmt = mbus_fmt;
> + return 0;
> +}
> +
> +static void unicam_wr_dma_addr(struct unicam_device *dev, dma_addr_t dmaaddr,
> + unsigned int buffer_size, int pad_id)
> +{
> + dma_addr_t endaddr = dmaaddr + buffer_size;
> +
> + /*
> + * dmaaddr and endaddr should be a 32-bit address with the top two bits
> + * set to 0x3 to signify uncached access through the Videocore memory
> + * controller.
> + */
> + WARN_ON((dmaaddr >> 30) != 0x3 || (endaddr >> 30) != 0x3);
> +
> + if (pad_id == IMAGE_PAD) {
> + 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 inline unsigned int unicam_get_lines_done(struct unicam_device *dev)
Same here...
> +{
> + dma_addr_t start_addr, cur_addr;
> + unsigned int stride = dev->node[IMAGE_PAD].v_fmt.fmt.pix.bytesperline;
> + struct unicam_buffer *frm = dev->node[IMAGE_PAD].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 inline void unicam_schedule_next_buffer(struct unicam_node *node)
...and here.
It's probably a good idea to scan this source for other inlines that do not make sense.
> +{
> + 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);
> + size = (node->pad_id == IMAGE_PAD) ?
> + node->v_fmt.fmt.pix.sizeimage :
> + node->v_fmt.fmt.meta.buffersize;
> +
> + unicam_wr_dma_addr(dev, addr, size, node->pad_id);
> +}
> +
> +static inline void unicam_schedule_dummy_buffer(struct unicam_node *node)
> +{
> + struct unicam_device *dev = node->dev;
> +
> + unicam_dbg(3, dev, "Scheduling dummy buffer for node %d\n",
> + node->pad_id);
> +
> + unicam_wr_dma_addr(dev, node->dummy_buf_dma_addr, DUMMY_BUF_SIZE,
> + node->pad_id);
> + node->next_frm = NULL;
> +}
> +
> +static inline 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 bool unicam_all_nodes_streaming(struct unicam_device *dev)
> +{
> + bool ret;
> +
> + ret = dev->node[IMAGE_PAD].open && dev->node[IMAGE_PAD].streaming;
> + ret &= !dev->node[METADATA_PAD].open ||
> + dev->node[METADATA_PAD].streaming;
> + return ret;
It took me a while to parse this boolean expression, and I'm not sure I like
the mixing of boolean with bitmasks (and in fact, I'm not 100% certain that
that isn't compiler dependent!).
I'd rework this a bit and add a comment.
But I also noticed that this function is used in only one place, so I would
move this code there instead of having this as a separate function.
> +}
> +
> +static bool unicam_all_nodes_disabled(struct unicam_device *dev)
> +{
> + return !dev->node[IMAGE_PAD].streaming &&
> + !dev->node[METADATA_PAD].streaming;
> +}
> +
> +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_PAD].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;
> + u64 ts;
> +
> + /*
> + * Don't service interrupts if not streaming.
> + * Avoids issues if the VPU should enable the
> + * peripheral without the kernel knowing (that
> + * shouldn't happen, but causes issues if it does).
> + */
> + if (unicam_all_nodes_disabled(unicam))
> + return IRQ_NONE;
> +
> + 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;
> +
> + /*
> + * 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 (ista & UNICAM_FEI || sta & UNICAM_PI0) {
> + /*
> + * 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 (unicam->node[i].cur_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;
> + /*
> + * 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) && !(ista & UNICAM_FEI)) {
> + 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;
> +}
> +
> +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;
> +
> + strlcpy(cap->driver, UNICAM_MODULE_NAME, sizeof(cap->driver));
> + strlcpy(cap->card, UNICAM_MODULE_NAME, sizeof(cap->card));
Use strscpy. The media subsystem has settled on the use of strscpy in
favor of strcpy/strlcpy/strncpy.
> +
> + 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_enum_fmt_vid_cap(struct file *file, void *priv,
> + struct v4l2_fmtdesc *f)
> +{
> + struct unicam_node *node = video_drvdata(file);
> + struct unicam_device *dev = node->dev;
> + unsigned int index = 0;
> + unsigned int i;
> + int ret = 0;
> +
> + if (node->pad_id != IMAGE_PAD)
> + return -EINVAL;
> +
> + for (i = 0; !ret && i < MAX_ENUM_MBUS_CODE; i++) {
> + struct v4l2_subdev_mbus_code_enum mbus_code = {
> + .index = i,
> + .pad = IMAGE_PAD,
> + .which = V4L2_SUBDEV_FORMAT_ACTIVE,
> + };
> + const struct unicam_fmt *fmt;
> +
> + ret = v4l2_subdev_call(dev->sensor, pad, enum_mbus_code,
> + NULL, &mbus_code);
> + if (ret < 0) {
> + unicam_dbg(2, dev,
> + "subdev->enum_mbus_code idx %d returned %d - index invalid\n",
> + i, ret);
> + return -EINVAL;
> + }
> +
> + fmt = find_format_by_code(mbus_code.code);
> + if (fmt) {
> + if (fmt->fourcc) {
> + if (index == f->index) {
> + f->pixelformat = fmt->fourcc;
> + break;
> + }
> + index++;
> + }
> + if (fmt->repacked_fourcc) {
> + if (index == f->index) {
> + f->pixelformat = fmt->repacked_fourcc;
> + break;
> + }
> + index++;
> + }
> + }
> + }
> +
> + return 0;
> +}
> +
> +static int unicam_g_fmt_vid_cap(struct file *file, void *priv,
> + struct v4l2_format *f)
> +{
> + struct v4l2_mbus_framefmt mbus_fmt = {0};
> + struct unicam_node *node = video_drvdata(file);
> + struct unicam_device *dev = node->dev;
> + const struct unicam_fmt *fmt = NULL;
> + int ret;
> +
> + if (node->pad_id != IMAGE_PAD)
> + return -EINVAL;
> +
> + /*
> + * If a flip has occurred in the sensor, the fmt code might have
> + * changed. So we will need to re-fetch the format from the subdevice.
> + */
> + ret = __subdev_get_format(dev, &mbus_fmt, node->pad_id);
> + if (ret)
> + return -EINVAL;
> +
> + /* Find the V4L2 format from mbus code. We must match a known format. */
> + fmt = find_format_by_code(mbus_fmt.code);
> + if (!fmt)
> + return -EINVAL;
> +
> + node->fmt = fmt;
> + node->v_fmt.fmt.pix.pixelformat = fmt->fourcc;
> + *f = node->v_fmt;
> +
> + return 0;
> +}
> +
> +static
> +const struct unicam_fmt *get_first_supported_format(struct unicam_device *dev)
Strange line break. If you need to split this in two lines, then split it
after the type and function name:
static const struct unicam_fmt *
get_first_supported_format(struct unicam_device *dev)
> +{
> + struct v4l2_subdev_mbus_code_enum mbus_code;
> + const struct unicam_fmt *fmt = NULL;
> + unsigned int i;
> + int ret;
> +
> + for (i = 0; ret != -EINVAL && ret != -ENOIOCTLCMD; ++i) {
> + memset(&mbus_code, 0, sizeof(mbus_code));
> + mbus_code.index = i;
> + mbus_code.pad = IMAGE_PAD;
> + mbus_code.which = V4L2_SUBDEV_FORMAT_ACTIVE;
> +
> + ret = v4l2_subdev_call(dev->sensor, pad, enum_mbus_code, NULL,
> + &mbus_code);
> + if (ret < 0) {
> + unicam_dbg(2, dev,
> + "subdev->enum_mbus_code idx %u returned %d - continue\n",
> + i, ret);
> + continue;
> + }
> +
> + unicam_dbg(2, dev, "subdev %s: code: 0x%08x idx: %u\n",
> + dev->sensor->name, mbus_code.code, i);
> +
> + fmt = find_format_by_code(mbus_code.code);
> + unicam_dbg(2, dev, "fmt 0x%08x returned as %p, V4L2 FOURCC 0x%08x, csi_dt 0x%02x\n",
> + mbus_code.code, fmt, fmt ? fmt->fourcc : 0,
> + fmt ? fmt->csi_dt : 0);
> + if (fmt)
> + return fmt;
> + }
> +
> + return NULL;
> +}
> +
> +static int unicam_try_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;
> + struct v4l2_subdev_format sd_fmt = {
> + .which = V4L2_SUBDEV_FORMAT_TRY,
> + .pad = IMAGE_PAD
> + };
> + struct v4l2_mbus_framefmt *mbus_fmt = &sd_fmt.format;
> + const struct unicam_fmt *fmt;
> + int ret;
> +
> + if (node->pad_id != IMAGE_PAD)
> + return -EINVAL;
> +
> + fmt = find_format_by_pix(dev, f->fmt.pix.pixelformat);
> + if (!fmt) {
> + /*
> + * Pixel format not supported by unicam. Choose the first
> + * supported format, and let the sensor choose something else.
> + */
> + unicam_dbg(3, dev, "Fourcc format (0x%08x) not found. Use first format.\n",
> + f->fmt.pix.pixelformat);
> +
> + fmt = &formats[0];
> + f->fmt.pix.pixelformat = fmt->fourcc;
> + }
> +
> + v4l2_fill_mbus_format(mbus_fmt, &f->fmt.pix, fmt->code);
> + /*
> + * No support for receiving interlaced video, so never
> + * request it from the sensor subdev.
> + */
> + mbus_fmt->field = V4L2_FIELD_NONE;
> +
> + ret = v4l2_subdev_call(dev->sensor, pad, set_fmt, dev->sensor_config,
> + &sd_fmt);
> + if (ret && ret != -ENOIOCTLCMD && ret != -ENODEV)
> + return ret;
> +
> + if (mbus_fmt->field != V4L2_FIELD_NONE)
> + unicam_info(dev, "Sensor trying to send interlaced video - results may be unpredictable\n");
> +
> + v4l2_fill_pix_format(&f->fmt.pix, &sd_fmt.format);
> + if (mbus_fmt->code != fmt->code) {
> + /* Sensor has returned an alternate format */
> + fmt = find_format_by_code(mbus_fmt->code);
> + if (!fmt) {
> + /*
> + * The alternate format is one unicam can't support.
> + * Find the first format that is supported by both, and
> + * then set that.
> + */
> + fmt = get_first_supported_format(dev);
> + mbus_fmt->code = fmt->code;
> +
> + ret = v4l2_subdev_call(dev->sensor, pad, set_fmt,
> + dev->sensor_config, &sd_fmt);
> + if (ret && ret != -ENOIOCTLCMD && ret != -ENODEV)
> + return ret;
> +
> + if (mbus_fmt->field != V4L2_FIELD_NONE)
> + unicam_info(dev, "Sensor trying to send interlaced video - results may be unpredictable\n");
> +
> + v4l2_fill_pix_format(&f->fmt.pix, &sd_fmt.format);
> +
> + if (mbus_fmt->code != fmt->code) {
> + /*
> + * We've set a format that the sensor reports
> + * as being supported, but it refuses to set it.
> + * Not much else we can do.
> + * Assume that the sensor driver may accept the
> + * format when it is set (rather than tried).
> + */
> + unicam_err(dev, "Sensor won't accept default format, and Unicam can't support sensor default\n");
> + }
> + }
> +
> + if (fmt->fourcc)
> + f->fmt.pix.pixelformat = fmt->fourcc;
> + else
> + f->fmt.pix.pixelformat = fmt->repacked_fourcc;
> + }
> +
> + return unicam_calc_format_size_bpl(dev, fmt, f);
> +}
> +
> +static int unicam_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;
> + struct vb2_queue *q = &node->buffer_queue;
> + struct v4l2_mbus_framefmt mbus_fmt = {0};
> + const struct unicam_fmt *fmt;
> + int ret;
> +
> + if (vb2_is_busy(q))
> + return -EBUSY;
> +
> + ret = unicam_try_fmt_vid_cap(file, priv, f);
> + if (ret < 0)
> + return ret;
> +
> + fmt = find_format_by_pix(dev, f->fmt.pix.pixelformat);
> + if (!fmt) {
> + /*
> + * Unknown pixel format - adopt a default.
> + * This shouldn't happen as try_fmt should have resolved any
> + * issues first.
> + */
> + fmt = get_first_supported_format(dev);
> + if (!fmt)
> + /*
> + * It shouldn't be possible to get here with no
> + * supported formats
> + */
> + return -EINVAL;
> + f->fmt.pix.pixelformat = fmt->fourcc;
> + return -EINVAL;
> + }
> +
> + v4l2_fill_mbus_format(&mbus_fmt, &f->fmt.pix, fmt->code);
> +
> + ret = __subdev_set_format(dev, &mbus_fmt, node->pad_id);
> + if (ret) {
> + unicam_dbg(3, dev, "%s __subdev_set_format failed %d\n",
> + __func__, ret);
> + return ret;
> + }
> +
> + /* Just double check nothing has gone wrong */
> + if (mbus_fmt.code != fmt->code) {
> + unicam_dbg(3, dev,
> + "%s subdev changed format on us, this should not happen\n",
> + __func__);
> + return -EINVAL;
> + }
> +
> + node->fmt = fmt;
> + node->v_fmt.fmt.pix.pixelformat = f->fmt.pix.pixelformat;
> + node->v_fmt.fmt.pix.bytesperline = f->fmt.pix.bytesperline;
> + unicam_reset_format(node);
> +
> + unicam_dbg(3, dev,
> + "%s %dx%d, mbus_fmt 0x%08X, V4L2 pix 0x%08X.\n",
> + __func__, node->v_fmt.fmt.pix.width,
> + node->v_fmt.fmt.pix.height, mbus_fmt.code,
> + node->v_fmt.fmt.pix.pixelformat);
> +
> + *f = node->v_fmt;
> +
> + return 0;
> +}
> +
> +static int unicam_enum_fmt_meta_cap(struct file *file, void *priv,
> + struct v4l2_fmtdesc *f)
> +{
> + struct unicam_node *node = video_drvdata(file);
> + struct unicam_device *dev = node->dev;
> + const struct unicam_fmt *fmt;
> + u32 code;
> + int ret = 0;
> +
> + if (node->pad_id != METADATA_PAD || f->index != 0)
> + return -EINVAL;
> +
> + if (dev->sensor_embedded_data) {
> + struct v4l2_subdev_mbus_code_enum mbus_code = {
> + .index = f->index,
> + .which = V4L2_SUBDEV_FORMAT_ACTIVE,
> + .pad = METADATA_PAD,
> + };
> +
> + ret = v4l2_subdev_call(dev->sensor, pad, enum_mbus_code, NULL,
> + &mbus_code);
> + if (ret < 0) {
> + unicam_dbg(2, dev,
> + "subdev->enum_mbus_code idx 0 returned %d - index invalid\n",
> + ret);
> + return -EINVAL;
> + }
> +
> + code = mbus_code.code;
> + } else {
> + code = MEDIA_BUS_FMT_SENSOR_DATA;
> + }
> +
> + fmt = find_format_by_code(code);
> + if (fmt)
> + f->pixelformat = fmt->fourcc;
> +
> + return 0;
> +}
> +
> +static int unicam_g_fmt_meta_cap(struct file *file, void *priv,
> + struct v4l2_format *f)
> +{
> + struct unicam_node *node = video_drvdata(file);
> +
> + if (node->pad_id != METADATA_PAD)
> + return -EINVAL;
> +
> + *f = node->v_fmt;
> +
> + return 0;
> +}
> +
> +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 = node->pad_id == IMAGE_PAD ?
> + 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 = node->pad_id == IMAGE_PAD ? 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_PAD].v_fmt.fmt.pix.pixelformat ==
> + dev->node[IMAGE_PAD].fmt->fourcc) {
> + unpack = UNICAM_PUM_NONE;
> + pack = UNICAM_PPM_NONE;
> + } else {
> + switch (dev->node[IMAGE_PAD].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_PAD].fmt->csi_dt);
> + } else {
> + /* CCP2 mode */
> + reg_write(dev, UNICAM_IDI0,
> + 0x80 | dev->node[IMAGE_PAD].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_PAD].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_PAD].v_fmt.fmt.pix.bytesperline);
> + size = dev->node[IMAGE_PAD].v_fmt.fmt.pix.sizeimage;
> + unicam_wr_dma_addr(dev, addr[IMAGE_PAD], size, IMAGE_PAD);
> + 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_PAD].streaming && dev->sensor_embedded_data) {
> + size = dev->node[METADATA_PAD].v_fmt.fmt.meta.buffersize;
> + unicam_enable_ed(dev);
> + unicam_wr_dma_addr(dev, addr[METADATA_PAD], size, METADATA_PAD);
> + }
> +
> + /* 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_PAD].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)
> +{
> + 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, VB2_BUF_STATE_ERROR);
> + }
> +
> + if (node->cur_frm)
> + vb2_buffer_done(&node->cur_frm->vb.vb2_buf,
> + VB2_BUF_STATE_ERROR);
> + if (node->next_frm && node->cur_frm != node->next_frm)
> + vb2_buffer_done(&node->next_frm->vb.vb2_buf,
> + VB2_BUF_STATE_ERROR);
> +
> + node->cur_frm = NULL;
> + node->next_frm = NULL;
> + spin_unlock_irqrestore(&node->dma_queue_lock, flags);
> +}
> +
> +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 };
> + unsigned long flags;
> + unsigned int i;
> + int ret;
> +
> + node->streaming = true;
> + if (!unicam_all_nodes_streaming(dev)) {
As suggested above, just move the actual code of that function here.
It certainly makes it easier to review.
> + unicam_dbg(3, dev, "Not all nodes are streaming yet.");
> + return 0;
> + }
> +
> + dev->sequence = 0;
> + ret = unicam_runtime_get(dev);
> + if (ret < 0) {
> + unicam_dbg(3, dev, "unicam_runtime_get failed\n");
> + goto err_streaming;
> + }
> +
> + /*
> + * TODO: Retrieve the number of active data lanes from the connected
> + * subdevice.
> + */
> + dev->active_data_lanes = dev->max_data_lanes;
> +
> + ret = clk_set_rate(dev->clock, 100 * 1000 * 1000);
> + if (ret) {
> + unicam_err(dev, "failed to set up clock\n");
> + goto err_pm_put;
> + }
> +
> + ret = clk_prepare_enable(dev->clock);
> + if (ret) {
> + unicam_err(dev, "Failed to enable CSI clock: %d\n", ret);
> + goto err_pm_put;
> + }
> +
> + for (i = 0; i < ARRAY_SIZE(dev->node); i++) {
> + struct unicam_buffer *buf;
> +
> + if (!dev->node[i].streaming)
> + continue;
> +
> + spin_lock_irqsave(&dev->node[i].dma_queue_lock, flags);
> + buf = list_first_entry(&dev->node[i].dma_queue,
> + struct unicam_buffer, list);
> + dev->node[i].cur_frm = buf;
> + dev->node[i].next_frm = buf;
> + list_del(&buf->list);
> + spin_unlock_irqrestore(&dev->node[i].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->sensor, video, s_stream, 1);
> + if (ret < 0) {
> + unicam_err(dev, "stream on failed in subdev\n");
> + goto err_disable_unicam;
> + }
> +
> + return 0;
> +
> +err_disable_unicam:
> + unicam_disable(dev);
> + clk_disable_unprepare(dev->clock);
> +err_pm_put:
> + unicam_runtime_put(dev);
> +err_streaming:
> + unicam_return_buffers(node);
That function returns the buffers with state ERROR, but in start_streaming that
should be state DEQUEUED.
> + 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;
> +
> + if (node->pad_id == IMAGE_PAD) {
> + /*
> + * 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);
> + clk_disable_unprepare(dev->clock);
> + unicam_runtime_put(dev);
> +
> + } else if (node->pad_id == METADATA_PAD) {
> + /*
> + * 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_PAD);
> + }
> +
> + /* Clear all queued buffers for the node */
> + unicam_return_buffers(node);
> +}
> +
> +static int unicam_enum_input(struct file *file, void *priv,
> + struct v4l2_input *inp)
> +{
> + struct unicam_node *node = video_drvdata(file);
> + struct unicam_device *dev = node->dev;
> +
> + if (inp->index != 0)
> + return -EINVAL;
> +
> + inp->type = V4L2_INPUT_TYPE_CAMERA;
> + if (v4l2_subdev_has_op(dev->sensor, video, s_dv_timings)) {
> + inp->capabilities = V4L2_IN_CAP_DV_TIMINGS;
> + inp->std = 0;
> + } else if (v4l2_subdev_has_op(dev->sensor, video, s_std)) {
> + inp->capabilities = V4L2_IN_CAP_STD;
> + if (v4l2_subdev_call(dev->sensor, video, g_tvnorms, &inp->std)
> + < 0)
Just put this in one line since this is hard to read.
> + inp->std = V4L2_STD_ALL;
> + } else {
> + inp->capabilities = 0;
> + inp->std = 0;
> + }
> + sprintf(inp->name, "Camera 0");
snprintf
> + return 0;
> +}
> +
> +static int unicam_g_input(struct file *file, void *priv, unsigned int *i)
> +{
> + *i = 0;
> +
> + return 0;
> +}
> +
> +static int unicam_s_input(struct file *file, void *priv, unsigned int i)
> +{
> + /*
> + * FIXME: Ideally we would like to be able to query the source
> + * subdevice for information over the input connectors it supports,
> + * and map that through in to a call to video_ops->s_routing.
> + * There is no infrastructure support for defining that within
> + * devicetree at present. Until that is implemented we can't
> + * map a user physical connector number to s_routing input number.
> + */
> + if (i > 0)
> + return -EINVAL;
> +
> + return 0;
> +}
> +
> +static int unicam_querystd(struct file *file, void *priv,
> + v4l2_std_id *std)
> +{
> + struct unicam_node *node = video_drvdata(file);
> + struct unicam_device *dev = node->dev;
> +
> + return v4l2_subdev_call(dev->sensor, video, querystd, std);
> +}
> +
> +static int unicam_g_std(struct file *file, void *priv, v4l2_std_id *std)
> +{
> + struct unicam_node *node = video_drvdata(file);
> + struct unicam_device *dev = node->dev;
> +
> + return v4l2_subdev_call(dev->sensor, video, g_std, std);
> +}
> +
> +static int unicam_s_std(struct file *file, void *priv, v4l2_std_id std)
> +{
> + struct unicam_node *node = video_drvdata(file);
> + struct unicam_device *dev = node->dev;
> + int ret;
> + v4l2_std_id current_std;
> +
> + ret = v4l2_subdev_call(dev->sensor, video, g_std, ¤t_std);
> + if (ret)
> + return ret;
> +
> + if (std == current_std)
> + return 0;
> +
> + if (vb2_is_busy(&node->buffer_queue))
> + return -EBUSY;
> +
> + ret = v4l2_subdev_call(dev->sensor, video, s_std, std);
> +
> + /* Force recomputation of bytesperline */
> + node->v_fmt.fmt.pix.bytesperline = 0;
> +
> + unicam_reset_format(node);
> +
> + return ret;
> +}
> +
> +static int unicam_s_edid(struct file *file, void *priv, struct v4l2_edid *edid)
> +{
> + struct unicam_node *node = video_drvdata(file);
> + struct unicam_device *dev = node->dev;
> +
> + return v4l2_subdev_call(dev->sensor, pad, set_edid, edid);
> +}
> +
> +static int unicam_g_edid(struct file *file, void *priv, struct v4l2_edid *edid)
> +{
> + struct unicam_node *node = video_drvdata(file);
> + struct unicam_device *dev = node->dev;
> +
> + return v4l2_subdev_call(dev->sensor, pad, get_edid, edid);
> +}
> +
> +static int unicam_s_selection(struct file *file, void *priv,
> + struct v4l2_selection *sel)
> +{
> + struct unicam_node *node = video_drvdata(file);
> + struct unicam_device *dev = node->dev;
> + struct v4l2_subdev_selection sdsel = {
> + .which = V4L2_SUBDEV_FORMAT_ACTIVE,
> + .target = sel->target,
> + .flags = sel->flags,
> + .r = sel->r,
> + };
> +
> + return v4l2_subdev_call(dev->sensor, pad, set_selection, NULL, &sdsel);
> +}
> +
> +static int unicam_g_selection(struct file *file, void *priv,
> + struct v4l2_selection *sel)
> +{
> + struct unicam_node *node = video_drvdata(file);
> + struct unicam_device *dev = node->dev;
> + struct v4l2_subdev_selection sdsel = {
> + .which = V4L2_SUBDEV_FORMAT_ACTIVE,
> + .target = sel->target,
> + };
> + int ret;
> +
> + ret = v4l2_subdev_call(dev->sensor, pad, get_selection, NULL, &sdsel);
> + if (!ret)
> + sel->r = sdsel.r;
> +
> + return ret;
> +}
> +
> +static int unicam_enum_framesizes(struct file *file, void *priv,
> + struct v4l2_frmsizeenum *fsize)
> +{
> + struct unicam_node *node = video_drvdata(file);
> + struct unicam_device *dev = node->dev;
> + const struct unicam_fmt *fmt;
> + struct v4l2_subdev_frame_size_enum fse;
> + int ret;
> +
> + /* check for valid format */
> + fmt = find_format_by_pix(dev, fsize->pixel_format);
> + if (!fmt) {
> + unicam_dbg(3, dev, "Invalid pixel code: %x\n",
> + fsize->pixel_format);
> + return -EINVAL;
> + }
> + fse.code = fmt->code;
> +
> + fse.which = V4L2_SUBDEV_FORMAT_ACTIVE;
> + fse.index = fsize->index;
> + fse.pad = node->pad_id;
> +
> + ret = v4l2_subdev_call(dev->sensor, pad, enum_frame_size, NULL, &fse);
> + if (ret)
> + return ret;
> +
> + unicam_dbg(1, dev, "%s: index: %d code: %x W:[%d,%d] H:[%d,%d]\n",
> + __func__, fse.index, fse.code, fse.min_width, fse.max_width,
> + fse.min_height, fse.max_height);
> +
> + fsize->type = V4L2_FRMSIZE_TYPE_DISCRETE;
> + fsize->discrete.width = fse.max_width;
> + fsize->discrete.height = fse.max_height;
> +
> + return 0;
> +}
> +
> +static int unicam_enum_frameintervals(struct file *file, void *priv,
> + struct v4l2_frmivalenum *fival)
> +{
> + struct unicam_node *node = video_drvdata(file);
> + struct unicam_device *dev = node->dev;
> + const struct unicam_fmt *fmt;
> + struct v4l2_subdev_frame_interval_enum fie = {
> + .index = fival->index,
> + .width = fival->width,
> + .height = fival->height,
> + .which = V4L2_SUBDEV_FORMAT_ACTIVE,
> + };
> + int ret;
> +
> + fmt = find_format_by_pix(dev, fival->pixel_format);
> + if (!fmt)
> + return -EINVAL;
> +
> + fie.code = fmt->code;
> + ret = v4l2_subdev_call(dev->sensor, pad, enum_frame_interval,
> + NULL, &fie);
> + if (ret)
> + return ret;
> +
> + fival->type = V4L2_FRMIVAL_TYPE_DISCRETE;
> + fival->discrete = fie.interval;
> +
> + return 0;
> +}
> +
> +static int unicam_g_parm(struct file *file, void *fh, struct v4l2_streamparm *a)
> +{
> + struct unicam_node *node = video_drvdata(file);
> + struct unicam_device *dev = node->dev;
> +
> + return v4l2_g_parm_cap(video_devdata(file), dev->sensor, a);
> +}
> +
> +static int unicam_s_parm(struct file *file, void *fh, struct v4l2_streamparm *a)
> +{
> + struct unicam_node *node = video_drvdata(file);
> + struct unicam_device *dev = node->dev;
> +
> + return v4l2_s_parm_cap(video_devdata(file), dev->sensor, a);
> +}
> +
> +static int unicam_g_dv_timings(struct file *file, void *priv,
> + struct v4l2_dv_timings *timings)
> +{
> + struct unicam_node *node = video_drvdata(file);
> + struct unicam_device *dev = node->dev;
> +
> + return v4l2_subdev_call(dev->sensor, video, g_dv_timings, timings);
> +}
> +
> +static int unicam_s_dv_timings(struct file *file, void *priv,
> + struct v4l2_dv_timings *timings)
> +{
> + struct unicam_node *node = video_drvdata(file);
> + struct unicam_device *dev = node->dev;
> + struct v4l2_dv_timings current_timings;
> + int ret;
> +
> + ret = v4l2_subdev_call(dev->sensor, video, g_dv_timings,
> + ¤t_timings);
ret isn't checked!
> +
> + if (v4l2_match_dv_timings(timings, ¤t_timings, 0, false))
> + return 0;
> +
> + if (vb2_is_busy(&node->buffer_queue))
> + return -EBUSY;
> +
> + ret = v4l2_subdev_call(dev->sensor, video, s_dv_timings, timings);
> +
> + /* Force recomputation of bytesperline */
> + node->v_fmt.fmt.pix.bytesperline = 0;
> +
> + unicam_reset_format(node);
> +
> + return ret;
> +}
> +
> +static int unicam_query_dv_timings(struct file *file, void *priv,
> + struct v4l2_dv_timings *timings)
> +{
> + struct unicam_node *node = video_drvdata(file);
> + struct unicam_device *dev = node->dev;
> +
> + return v4l2_subdev_call(dev->sensor, video, query_dv_timings, timings);
> +}
> +
> +static int unicam_enum_dv_timings(struct file *file, void *priv,
> + struct v4l2_enum_dv_timings *timings)
> +{
> + struct unicam_node *node = video_drvdata(file);
> + struct unicam_device *dev = node->dev;
> +
> + return v4l2_subdev_call(dev->sensor, pad, enum_dv_timings, timings);
> +}
> +
> +static int unicam_dv_timings_cap(struct file *file, void *priv,
> + struct v4l2_dv_timings_cap *cap)
> +{
> + struct unicam_node *node = video_drvdata(file);
> + struct unicam_device *dev = node->dev;
> +
> + return v4l2_subdev_call(dev->sensor, pad, dv_timings_cap, cap);
> +}
> +
> +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 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 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_PAD].video_dev, arg);
> + break;
> + default:
> + break;
> + }
> +}
> +
> +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_v4l2_open : This function is based on the v4l2_fh_open helper
> + * function. It has been augmented to handle sensor subdevice power management,
> + */
> +static int unicam_v4l2_open(struct file *file)
> +{
> + struct unicam_node *node = video_drvdata(file);
> + struct unicam_device *dev = node->dev;
> + int ret;
> +
> + mutex_lock(&node->lock);
> +
> + ret = v4l2_fh_open(file);
> + if (ret) {
> + unicam_err(dev, "v4l2_fh_open failed\n");
> + goto unlock;
> + }
> +
> + node->open++;
> +
> + if (!v4l2_fh_is_singular_file(file))
> + goto unlock;
> +
> + ret = v4l2_subdev_call(dev->sensor, core, s_power, 1);
> + if (ret < 0 && ret != -ENOIOCTLCMD) {
> + v4l2_fh_release(file);
> + node->open--;
> + goto unlock;
> + }
> +
> + ret = 0;
> +
> +unlock:
> + mutex_unlock(&node->lock);
> + return ret;
> +}
> +
> +static int unicam_v4l2_release(struct file *file)
> +{
> + struct unicam_node *node = video_drvdata(file);
> + struct unicam_device *dev = node->dev;
> + struct v4l2_subdev *sd = dev->sensor;
> + bool fh_singular;
> + int ret;
> +
> + mutex_lock(&node->lock);
> +
> + fh_singular = v4l2_fh_is_singular_file(file);
> +
> + ret = _vb2_fop_release(file, NULL);
> +
> + if (fh_singular)
> + v4l2_subdev_call(sd, core, s_power, 0);
> +
> + node->open--;
> + mutex_unlock(&node->lock);
> +
> + return ret;
> +}
> +
> +/* unicam capture driver file operations */
> +static const struct v4l2_file_operations unicam_fops = {
> + .owner = THIS_MODULE,
> + .open = unicam_v4l2_open,
> + .release = unicam_v4l2_release,
> + .read = vb2_fop_read,
> + .poll = vb2_fop_poll,
> + .unlocked_ioctl = video_ioctl2,
> + .mmap = vb2_fop_mmap,
> +};
> +
> +/* unicam capture ioctl operations */
> +static const struct v4l2_ioctl_ops unicam_ioctl_ops = {
> + .vidioc_querycap = unicam_querycap,
> + .vidioc_enum_fmt_vid_cap = unicam_enum_fmt_vid_cap,
> + .vidioc_g_fmt_vid_cap = unicam_g_fmt_vid_cap,
> + .vidioc_s_fmt_vid_cap = unicam_s_fmt_vid_cap,
> + .vidioc_try_fmt_vid_cap = unicam_try_fmt_vid_cap,
> +
> + .vidioc_enum_fmt_meta_cap = unicam_enum_fmt_meta_cap,
> + .vidioc_g_fmt_meta_cap = unicam_g_fmt_meta_cap,
> + .vidioc_s_fmt_meta_cap = unicam_g_fmt_meta_cap,
> + .vidioc_try_fmt_meta_cap = unicam_g_fmt_meta_cap,
> +
> + .vidioc_enum_input = unicam_enum_input,
> + .vidioc_g_input = unicam_g_input,
> + .vidioc_s_input = unicam_s_input,
> +
> + .vidioc_querystd = unicam_querystd,
> + .vidioc_s_std = unicam_s_std,
> + .vidioc_g_std = unicam_g_std,
> +
> + .vidioc_g_edid = unicam_g_edid,
> + .vidioc_s_edid = unicam_s_edid,
> +
> + .vidioc_enum_framesizes = unicam_enum_framesizes,
> + .vidioc_enum_frameintervals = unicam_enum_frameintervals,
> +
> + .vidioc_g_selection = unicam_g_selection,
> + .vidioc_s_selection = unicam_s_selection,
> +
> + .vidioc_g_parm = unicam_g_parm,
> + .vidioc_s_parm = unicam_s_parm,
> +
> + .vidioc_s_dv_timings = unicam_s_dv_timings,
> + .vidioc_g_dv_timings = unicam_g_dv_timings,
> + .vidioc_query_dv_timings = unicam_query_dv_timings,
> + .vidioc_enum_dv_timings = unicam_enum_dv_timings,
> + .vidioc_dv_timings_cap = unicam_dv_timings_cap,
> +
> + .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 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_config)
> + v4l2_subdev_free_pad_config(unicam->sensor_config);
> +
> + 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 int register_node(struct unicam_device *unicam, struct unicam_node *node,
> + enum v4l2_buf_type type, int pad_id)
> +{
> + struct video_device *vdev;
> + struct vb2_queue *q;
> + struct v4l2_mbus_framefmt mbus_fmt = {0};
> + const struct unicam_fmt *fmt;
> + int ret;
> +
> + if (pad_id == IMAGE_PAD) {
> + ret = __subdev_get_format(unicam, &mbus_fmt, pad_id);
> + if (ret) {
> + unicam_err(unicam, "Failed to get_format - ret %d\n",
> + ret);
> + return ret;
> + }
> +
> + fmt = find_format_by_code(mbus_fmt.code);
> + if (!fmt) {
> + /*
> + * Find the first format that the sensor and unicam both
> + * support
> + */
> + fmt = get_first_supported_format(unicam);
> +
> + if (!fmt)
> + /* No compatible formats */
> + return -EINVAL;
> +
> + mbus_fmt.code = fmt->code;
> + ret = __subdev_set_format(unicam, &mbus_fmt, pad_id);
> + if (ret)
> + return -EINVAL;
> + }
> + if (mbus_fmt.field != V4L2_FIELD_NONE) {
> + /* Interlaced not supported - disable it now. */
> + mbus_fmt.field = V4L2_FIELD_NONE;
> + ret = __subdev_set_format(unicam, &mbus_fmt, pad_id);
> + if (ret)
> + return -EINVAL;
> + }
> +
> + node->v_fmt.fmt.pix.pixelformat = fmt->fourcc ? fmt->fourcc
> + : fmt->repacked_fourcc;
> + } else {
> + /* Fix this node format as embedded data. */
> + fmt = find_format_by_code(MEDIA_BUS_FMT_SENSOR_DATA);
> + node->v_fmt.fmt.meta.dataformat = fmt->fourcc;
> + }
> +
> + node->dev = unicam;
> + node->pad_id = pad_id;
> + node->fmt = fmt;
> +
> + /* Read current subdev format */
> + unicam_reset_format(node);
> +
> + if (v4l2_subdev_has_op(unicam->sensor, video, s_std)) {
> + v4l2_std_id tvnorms;
> +
> + if (WARN_ON(!v4l2_subdev_has_op(unicam->sensor, video,
> + g_tvnorms)))
> + /*
> + * Subdevice should not advertise s_std but not
> + * g_tvnorms
> + */
> + return -EINVAL;
> +
> + ret = v4l2_subdev_call(unicam->sensor, video,
> + g_tvnorms, &tvnorms);
> + if (WARN_ON(ret))
> + return -EINVAL;
> + node->video_dev.tvnorms |= tvnorms;
> + }
> +
> + spin_lock_init(&node->dma_queue_lock);
> + mutex_init(&node->lock);
> +
> + vdev = &node->video_dev;
> + if (pad_id == IMAGE_PAD) {
> + /* Add controls from the subdevice */
> + ret = v4l2_ctrl_add_handler(&unicam->ctrl_handler,
> + unicam->sensor->ctrl_handler, NULL,
> + true);
> + if (ret < 0)
> + return ret;
> +
> + /*
> + * 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 = 2;
> + 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_ioctl_ops;
> + vdev->v4l2_dev = &unicam->v4l2_dev;
> + vdev->vfl_dir = VFL_DIR_RX;
> + vdev->queue = q;
> + vdev->lock = &node->lock;
> + vdev->device_caps = (pad_id == IMAGE_PAD) ?
> + (V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_STREAMING) :
> + (V4L2_CAP_META_CAPTURE | V4L2_CAP_STREAMING);
> +
> + /* Define the device names */
> + snprintf(vdev->name, sizeof(vdev->name), "%s-%s", UNICAM_MODULE_NAME,
> + pad_id == IMAGE_PAD ? "image" : "embedded");
> +
> + video_set_drvdata(vdev, node);
> + if (pad_id == IMAGE_PAD)
> + 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;
> + }
> +
> + if (pad_id == METADATA_PAD) {
> + v4l2_disable_ioctl(vdev, VIDIOC_DQEVENT);
> + v4l2_disable_ioctl(vdev, VIDIOC_SUBSCRIBE_EVENT);
> + v4l2_disable_ioctl(vdev, VIDIOC_UNSUBSCRIBE_EVENT);
Why?
> + }
> + if (pad_id == METADATA_PAD ||
> + !v4l2_subdev_has_op(unicam->sensor, video, s_std)) {
> + v4l2_disable_ioctl(&node->video_dev, VIDIOC_S_STD);
> + v4l2_disable_ioctl(&node->video_dev, VIDIOC_G_STD);
> + v4l2_disable_ioctl(&node->video_dev, VIDIOC_ENUMSTD);
> + }
> + if (pad_id == METADATA_PAD ||
> + !v4l2_subdev_has_op(unicam->sensor, video, querystd))
> + v4l2_disable_ioctl(&node->video_dev, VIDIOC_QUERYSTD);
> + if (pad_id == METADATA_PAD ||
> + !v4l2_subdev_has_op(unicam->sensor, video, s_dv_timings)) {
> + v4l2_disable_ioctl(&node->video_dev, VIDIOC_S_EDID);
> + v4l2_disable_ioctl(&node->video_dev, VIDIOC_G_EDID);
> + v4l2_disable_ioctl(&node->video_dev, VIDIOC_DV_TIMINGS_CAP);
> + v4l2_disable_ioctl(&node->video_dev, VIDIOC_G_DV_TIMINGS);
> + v4l2_disable_ioctl(&node->video_dev, VIDIOC_S_DV_TIMINGS);
> + v4l2_disable_ioctl(&node->video_dev, VIDIOC_ENUM_DV_TIMINGS);
> + v4l2_disable_ioctl(&node->video_dev, VIDIOC_QUERY_DV_TIMINGS);
> + }
> + if (pad_id == METADATA_PAD ||
> + !v4l2_subdev_has_op(unicam->sensor, pad, enum_frame_interval))
> + v4l2_disable_ioctl(&node->video_dev,
> + VIDIOC_ENUM_FRAMEINTERVALS);
> + if (pad_id == METADATA_PAD ||
> + !v4l2_subdev_has_op(unicam->sensor, video, g_frame_interval))
> + v4l2_disable_ioctl(&node->video_dev, VIDIOC_G_PARM);
> + if (pad_id == METADATA_PAD ||
> + !v4l2_subdev_has_op(unicam->sensor, video, s_frame_interval))
> + v4l2_disable_ioctl(&node->video_dev, VIDIOC_S_PARM);
> +
> + if (pad_id == METADATA_PAD ||
> + !v4l2_subdev_has_op(unicam->sensor, pad, enum_frame_size))
> + v4l2_disable_ioctl(&node->video_dev, VIDIOC_ENUM_FRAMESIZES);
> +
> + if (node->pad_id == METADATA_PAD ||
> + !v4l2_subdev_has_op(unicam->sensor, pad, set_selection))
> + v4l2_disable_ioctl(&node->video_dev, VIDIOC_S_SELECTION);
> +
> + if (node->pad_id == METADATA_PAD ||
> + !v4l2_subdev_has_op(unicam->sensor, pad, get_selection))
> + v4l2_disable_ioctl(&node->video_dev, VIDIOC_G_SELECTION);
Some of these are probably no longer needed since the v4l2 core will disable
them for you.
> +
> + 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;
> +
> + if (pad_id != METADATA_PAD || unicam->sensor_embedded_data) {
> + ret = media_create_pad_link(&unicam->sensor->entity, 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\n",
> + vdev->name);
> + }
> +
> + 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_probe_complete(struct unicam_device *unicam)
> +{
> + int ret;
> +
> + unicam->v4l2_dev.notify = unicam_notify;
> +
> + unicam->sensor_config = v4l2_subdev_alloc_pad_config(unicam->sensor);
> + if (!unicam->sensor_config)
> + return -ENOMEM;
> +
> + unicam->sensor_embedded_data = (unicam->sensor->entity.num_pads >= 2);
> +
> + ret = register_node(unicam, &unicam->node[IMAGE_PAD],
> + V4L2_BUF_TYPE_VIDEO_CAPTURE, IMAGE_PAD);
> + if (ret) {
> + unicam_err(unicam, "Unable to register image video device.\n");
> + goto unregister;
> + }
> +
> + ret = register_node(unicam, &unicam->node[METADATA_PAD],
> + V4L2_BUF_TYPE_META_CAPTURE, METADATA_PAD);
> + if (ret) {
> + unicam_err(unicam, "Unable to register metadata video device.\n");
> + goto unregister;
> + }
> +
> + ret = v4l2_device_register_ro_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 int unicam_async_complete(struct v4l2_async_notifier *notifier)
> +{
> + struct unicam_device *unicam = to_unicam_device(notifier->v4l2_dev);
> +
> + return unicam_probe_complete(unicam);
> +}
> +
> +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 = { 0 };
> + 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_notifier_init(&dev->notifier);
> + dev->notifier.ops = &unicam_async_ops;
> +
> + dev->asd.match_type = V4L2_ASYNC_MATCH_FWNODE;
> + dev->asd.match.fwnode = of_fwnode_handle(sensor_node);
> + ret = v4l2_async_notifier_add_subdev(&dev->notifier, &dev->asd);
> + if (ret) {
> + unicam_err(dev, "Error adding subdevice: %d\n", ret);
> + goto cleanup_exit;
> + }
> +
> + ret = v4l2_async_notifier_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 unicam_probe(struct platform_device *pdev)
> +{
> + struct unicam_device *unicam;
> + int ret;
> +
> + unicam = kzalloc(sizeof(*unicam), GFP_KERNEL);
> + if (!unicam)
> + return -ENOMEM;
> +
> + kref_init(&unicam->kref);
> + unicam->pdev = pdev;
> +
> + 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 clock\n");
> + ret = PTR_ERR(unicam->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;
> + }
> +
> + 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);
> + 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);
> +
> + ret = of_unicam_connect_subdevs(unicam);
> + if (ret) {
> + dev_err(&pdev->dev, "Failed to connect subdevs\n");
> + goto err_media_unregister;
> + }
> +
> + /* Enable the block power domain */
> + pm_runtime_enable(&pdev->dev);
> +
> + return 0;
> +
> +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);
> +
> + unicam_dbg(2, unicam, "%s\n", __func__);
> +
> + v4l2_async_notifier_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
>
Regards,
Hans
next prev parent reply other threads:[~2020-05-04 15:21 UTC|newest]
Thread overview: 111+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-05-04 9:25 [PATCH v2 00/34] Drivers for the BCM283x CSI-2/CCP2 receiver and ISP Laurent Pinchart
2020-05-04 9:25 ` [PATCH v2 01/34] media: uapi: v4l2-core: Add sensor ancillary data V4L2 fourcc type Laurent Pinchart
2020-05-04 13:48 ` Hans Verkuil
2020-05-04 14:39 ` Dave Stevenson
2020-05-04 15:32 ` Hans Verkuil
2020-05-04 16:08 ` Laurent Pinchart
2020-05-05 11:20 ` Dave Stevenson
2020-05-04 9:25 ` [PATCH v2 02/34] media: uapi: Add MEDIA_BUS_FMT_SENSOR_DATA media bus format Laurent Pinchart
2020-05-04 9:25 ` [PATCH v2 03/34] dt-bindings: media: Document BCM283x CSI2/CCP2 receiver Laurent Pinchart
2020-05-04 9:25 ` [PATCH v2 04/34] media: bcm2835-unicam: Driver for CCP2/CSI2 camera interface Laurent Pinchart
2020-05-04 15:21 ` Hans Verkuil [this message]
2020-05-05 1:26 ` kbuild test robot
2020-05-05 1:26 ` kbuild test robot
2020-05-06 18:01 ` Nicolas Saenz Julienne
2020-08-29 11:20 ` Jacopo Mondi
2020-08-29 18:32 ` Laurent Pinchart
2020-08-31 7:38 ` Jacopo Mondi
2020-08-31 14:17 ` Laurent Pinchart
2020-08-31 14:46 ` Jacopo Mondi
2020-08-31 14:56 ` Laurent Pinchart
2020-09-01 8:41 ` Dave Stevenson
2020-09-01 10:22 ` Jacopo Mondi
2020-09-01 16:37 ` Dave Stevenson
2020-09-01 17:11 ` Laurent Pinchart
2020-09-15 7:03 ` Sakari Ailus
2020-09-15 9:32 ` Laurent Pinchart
2020-09-15 13:28 ` Dave Stevenson
2020-10-30 17:53 ` Jacopo Mondi
2020-09-15 17:30 ` Dave Stevenson
2020-05-04 9:25 ` [PATCH v2 05/34] ARM: dts: bcm2711: Add Unicam DT nodes Laurent Pinchart
2020-05-04 9:25 ` [PATCH v2 06/34] staging: vc04_services: Add new vc-sm-cma driver Laurent Pinchart
2020-05-05 2:38 ` kbuild test robot
2020-05-05 2:38 ` kbuild test robot
2020-05-05 12:17 ` kbuild test robot
2020-05-05 12:17 ` kbuild test robot
2020-05-06 3:05 ` kbuild test robot
2020-05-06 3:05 ` kbuild test robot
2020-05-06 18:04 ` Nicolas Saenz Julienne
2020-05-06 19:24 ` Dave Stevenson
2020-05-08 0:11 ` Laurent Pinchart
2020-05-18 12:06 ` Hans Verkuil
2020-08-24 16:39 ` Jacopo Mondi
2020-08-25 17:52 ` Dave Stevenson
2020-08-27 10:38 ` Jacopo Mondi
2020-08-27 12:51 ` Dave Stevenson
2020-08-27 16:46 ` Jacopo Mondi
2020-08-27 17:19 ` Dave Stevenson
2020-05-11 18:42 ` Nicolas Saenz Julienne
2020-05-18 15:48 ` Dave Stevenson
2020-05-20 14:41 ` Nicolas Saenz Julienne
2020-05-21 11:01 ` Dave Stevenson
2020-05-04 9:25 ` [PATCH v2 07/34] staging: bcm2835: Break MMAL support out from camera Laurent Pinchart
2020-05-04 9:25 ` [PATCH v2 08/34] staging: mmal-vchiq: Allocate and free components as required Laurent Pinchart
2020-05-04 9:25 ` [PATCH v2 09/34] staging: mmal-vchiq: Avoid use of bool in structures Laurent Pinchart
2020-05-04 9:25 ` [PATCH v2 10/34] staging: mmal-vchiq: Make timeout a defined parameter Laurent Pinchart
2020-05-04 9:25 ` [PATCH v2 11/34] staging: mmal-vchiq: Make a mmal_buf struct for passing parameters Laurent Pinchart
2020-05-04 9:25 ` [PATCH v2 12/34] staging: mmal-vchiq: Add support for event callbacks Laurent Pinchart
2020-05-04 9:25 ` [PATCH v2 13/34] staging: mmal-vchiq: Support sending data to MMAL ports Laurent Pinchart
2020-05-04 9:25 ` [PATCH v2 14/34] staging: mmal-vchiq: Fixup vchiq-mmal include ordering Laurent Pinchart
2020-05-04 9:25 ` [PATCH v2 15/34] staging: mmal-vchiq: Use vc-sm-cma to support zero copy Laurent Pinchart
2020-05-04 16:30 ` Nicolas Saenz Julienne
2020-05-05 16:07 ` kbuild test robot
2020-05-05 16:07 ` kbuild test robot
2020-05-11 19:15 ` Nicolas Saenz Julienne
2020-05-04 9:25 ` [PATCH v2 16/34] staging: mmal-vchiq: Fix client_component for 64 bit kernel Laurent Pinchart
2020-05-18 10:19 ` Hans Verkuil
2020-05-04 9:25 ` [PATCH v2 17/34] staging: mmal_vchiq: Add in the Bayer encoding formats Laurent Pinchart
2020-05-04 9:25 ` [PATCH v2 18/34] staging: mmal-vchiq: Always return the param size from param_get Laurent Pinchart
2020-05-04 9:25 ` [PATCH v2 19/34] staging: mmal-vchiq: If the VPU returns an error, don't negate it Laurent Pinchart
2020-05-04 9:25 ` [PATCH v2 20/34] staging: mmal-vchiq: Fix handling of VB2_MEMORY_DMABUF buffers Laurent Pinchart
2020-05-04 9:25 ` [PATCH v2 21/34] staging: mmal-vchiq: Update mmal_parameters.h with recently defined params Laurent Pinchart
2020-05-04 9:25 ` [PATCH v2 22/34] staging: mmal-vchiq: Free the event context for control ports Laurent Pinchart
2020-05-04 9:26 ` [PATCH v2 23/34] staging: mmal-vchiq: Fix memory leak in error path Laurent Pinchart
2020-05-04 9:26 ` [PATCH v2 24/34] staging: mmal-vchiq: Fix formatting errors in mmal_parameters.h Laurent Pinchart
2020-05-04 9:26 ` [PATCH v2 25/34] staging: vchiq_arm: Register vcsm-cma as a platform driver Laurent Pinchart
2020-05-04 9:26 ` [PATCH v2 26/34] staging: vchiq_arm: Set up dma ranges on child devices Laurent Pinchart
2020-05-04 16:54 ` Nicolas Saenz Julienne
2020-08-25 16:57 ` Jacopo Mondi
2020-05-04 9:26 ` [PATCH v2 27/34] staging: vchiq: Use the old dma controller for OF config on platform devices Laurent Pinchart
2020-05-04 15:44 ` Nicolas Saenz Julienne
2020-05-04 9:26 ` [PATCH v2 28/34] staging: vchiq_2835_arm: Implement a DMA pool for small bulk transfers Laurent Pinchart
2020-05-04 9:26 ` [PATCH v2 29/34] staging: vchiq: Add 36-bit address support Laurent Pinchart
2020-05-04 17:40 ` Nicolas Saenz Julienne
2020-05-04 20:46 ` Phil Elwell
2020-05-05 10:13 ` Nicolas Saenz Julienne
2020-05-05 10:57 ` Phil Elwell
2020-05-05 13:22 ` kbuild test robot
2020-05-05 13:22 ` kbuild test robot
2020-05-04 9:26 ` [PATCH v2 30/34] staging: vchiq_arm: Give vchiq children DT nodes Laurent Pinchart
2020-05-04 17:12 ` Nicolas Saenz Julienne
2020-05-04 19:42 ` Phil Elwell
2020-05-05 10:37 ` Nicolas Saenz Julienne
2020-05-05 10:50 ` Phil Elwell
2020-05-04 9:26 ` [PATCH v2 31/34] staging: vchiq_arm: Add a matching unregister call Laurent Pinchart
2020-05-04 9:26 ` [PATCH v2 32/34] media: videobuf2: Allow exporting of a struct dmabuf Laurent Pinchart
2020-05-04 13:36 ` Hans Verkuil
2020-05-04 9:26 ` [PATCH v2 33/34] staging: bcm2835-isp: Add support for BC2835 ISP Laurent Pinchart
2020-05-11 19:19 ` Nicolas Saenz Julienne
2020-05-18 13:38 ` Dave Stevenson
2020-05-20 13:46 ` Nicolas Saenz Julienne
2020-05-18 12:02 ` Hans Verkuil
2020-05-18 14:36 ` Dave Stevenson
2020-05-18 15:07 ` Hans Verkuil
2020-05-19 12:47 ` Naushir Patuck
2020-05-19 13:03 ` Jacopo Mondi
2020-06-24 11:28 ` Hans Verkuil
2020-05-04 9:26 ` [PATCH v2 34/34] staging: vchiq: Load bcm2835_isp driver from vchiq Laurent Pinchart
2020-05-04 15:15 ` [PATCH v2 00/34] Drivers for the BCM283x CSI-2/CCP2 receiver and ISP Nicolas Saenz Julienne
2020-05-04 15:38 ` Laurent Pinchart
2020-05-04 16:15 ` Nicolas Saenz Julienne
2020-05-05 13:31 [PATCH v2 04/34] media: bcm2835-unicam: Driver for CCP2/CSI2 camera interface kbuild test robot
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