+++ /dev/null
-// 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.
- */
-
-#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_dmaqueue {
- struct list_head active;
-};
-
-struct unicam_buffer {
- struct vb2_v4l2_buffer vb;
- struct list_head list;
-};
-
-struct unicam_cfg {
- /* peripheral base address */
- void __iomem *base;
- /* clock gating base address */
- void __iomem *clk_gate_base;
-};
-
-#define MAX_POSSIBLE_PIX_FMTS (ARRAY_SIZE(formats))
-
-struct unicam_node {
- int registered;
- int open;
- int 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 unicam_dmaqueue 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;
- struct v4l2_ctrl_handler ctrl_handler;
- 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 {
- /* V4l2 specific parameters */
-
- struct v4l2_fwnode_endpoint endpoint;
-
- struct v4l2_async_subdev asd;
-
- /* unicam cfg */
- struct unicam_cfg cfg;
- /* 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;
-
- unsigned int virtual_channel;
- 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];
-};
-
-/* Hardware access */
-#define clk_write(dev, val) writel((val) | 0x5a000000, (dev)->clk_gate_base)
-#define clk_read(dev) readl((dev)->clk_gate_base)
-
-#define reg_read(dev, offset) readl((dev)->base + (offset))
-#define reg_write(dev, offset, val) writel(val, (dev)->base + (offset))
-
-#define reg_read_field(dev, offset, mask) get_field(reg_read((dev), (offset), \
- mask))
-
-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 void reg_write_field(struct unicam_cfg *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)
-{
- struct v4l2_subdev_mbus_code_enum mbus_code;
- int ret = 0;
- int i;
-
- for (i = 0; !ret && i < MAX_ENUM_MBUS_CODE; 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 && 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,
- 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;
-
- 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_cfg *cfg, 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.
- */
- BUG_ON((dmaaddr >> 30) != 0x3 && (endaddr >> 30) != 0x3);
-
- if (pad_id == IMAGE_PAD) {
- reg_write(cfg, UNICAM_IBSA0, dmaaddr);
- reg_write(cfg, UNICAM_IBEA0, endaddr);
- } else {
- reg_write(cfg, UNICAM_DBSA0, dmaaddr);
- reg_write(cfg, UNICAM_DBEA0, endaddr);
- }
-}
-
-static inline unsigned int unicam_get_lines_done(struct unicam_device *dev)
-{
- 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->cfg, UNICAM_IBWP);
- return (unsigned int)(cur_addr - start_addr) / stride;
-}
-
-static inline void unicam_schedule_next_buffer(struct unicam_node *node)
-{
- struct unicam_device *dev = node->dev;
- struct unicam_dmaqueue *dma_q = &node->dma_queue;
- struct unicam_buffer *buf;
- unsigned int size;
- dma_addr_t addr;
-
- buf = list_entry(dma_q->active.next, 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) ?
- dev->node[IMAGE_PAD].v_fmt.fmt.pix.sizeimage :
- dev->node[METADATA_PAD].v_fmt.fmt.meta.buffersize;
-
- unicam_wr_dma_addr(&dev->cfg, addr, size, node->pad_id);
-}
-
-static inline void unicam_schedule_dummy_buffer(struct unicam_node *node)
-{
- struct unicam_device *dev = node->dev;
- dma_addr_t addr = node->dummy_buf_dma_addr;
-
- unicam_dbg(3, dev, "Scheduling dummy buffer for node %d\n",
- node->pad_id);
-
- unicam_wr_dma_addr(&dev->cfg, 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 int unicam_num_nodes_streaming(struct unicam_device *dev)
-{
- return dev->node[IMAGE_PAD].streaming +
- dev->node[METADATA_PAD].streaming;
-}
-
-static int unicam_all_nodes_streaming(struct unicam_device *dev)
-{
- int 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;
-}
-
-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 = (struct unicam_device *)dev;
- struct unicam_cfg *cfg = &unicam->cfg;
- unsigned int lines_done = unicam_get_lines_done(dev);
- unsigned int sequence = unicam->sequence;
- int num_nodes_streaming = unicam_num_nodes_streaming(dev);
- int ista, sta;
- u64 ts;
- int i;
-
- sta = reg_read(cfg, UNICAM_STA);
- /* Write value back to clear the interrupts */
- reg_write(cfg, UNICAM_STA, sta);
-
- ista = reg_read(cfg, UNICAM_ISTA);
- /* Write value back to clear the interrupts */
- reg_write(cfg, 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 < num_nodes_streaming; i++) {
- 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 < num_nodes_streaming; i++) {
- 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 < num_nodes_streaming; i++) {
- spin_lock(&unicam->node[i].dma_queue_lock);
- if (!list_empty(&unicam->node[i].dma_queue.active) &&
- !unicam->node[i].next_frm)
- unicam_schedule_next_buffer(&unicam->node[i]);
- spin_unlock(&unicam->node[i].dma_queue_lock);
- }
- }
-
- if (reg_read(&unicam->cfg, UNICAM_ICTL) & UNICAM_FCM) {
- /* Switch out of trigger mode if selected */
- reg_write_field(&unicam->cfg, UNICAM_ICTL, 1, UNICAM_TFC);
- reg_write_field(&unicam->cfg, 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));
-
- snprintf(cap->bus_info, sizeof(cap->bus_info),
- "platform:%s", dev->v4l2_dev.name);
-
- cap->capabilities = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_STREAMING |
- V4L2_CAP_READWRITE | V4L2_CAP_DEVICE_CAPS |
- V4L2_CAP_META_CAPTURE;
-
- if (node->pad_id == IMAGE_PAD)
- cap->device_caps = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_STREAMING;
- else
- cap->device_caps = V4L2_CAP_META_CAPTURE | V4L2_CAP_STREAMING;
-
- 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;
- struct v4l2_subdev_mbus_code_enum mbus_code;
- const struct unicam_fmt *fmt = NULL;
- int index = 0;
- int ret = 0;
- int i;
-
- if (node->pad_id == METADATA_PAD)
- return -EINVAL;
-
- for (i = 0; !ret && i < MAX_ENUM_MBUS_CODE; 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 %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;
-
- if (node->fmt != fmt) {
- /*
- * The sensor format has changed so the pixelformat needs to
- * be updated. Try and retain the packed/unpacked choice if
- * at all possible.
- */
- if (node->fmt->repacked_fourcc ==
- node->v_fmt.fmt.pix.pixelformat)
- /* Using the repacked format */
- node->v_fmt.fmt.pix.pixelformat = fmt->repacked_fourcc;
- else
- /* Using the native format */
- node->v_fmt.fmt.pix.pixelformat = fmt->fourcc;
-
- node->fmt = fmt;
- }
-
- *f = node->v_fmt;
-
- return 0;
-}
-
-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;
- int ret = 0;
- int j;
-
- for (j = 0; ret != -EINVAL && ret != -ENOIOCTLCMD; ++j) {
- memset(&mbus_code, 0, sizeof(mbus_code));
- mbus_code.index = j;
- 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 %d returned %d - continue\n",
- j, ret);
- continue;
- }
-
- unicam_dbg(2, dev, "subdev %s: code: 0x%08x idx: %d\n",
- dev->sensor->name, mbus_code.code, j);
-
- 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 == METADATA_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;
- struct v4l2_subdev_mbus_code_enum mbus_code;
- const struct unicam_fmt *fmt = NULL;
- int ret = 0;
-
- if (node->pad_id != METADATA_PAD || f->index != 0)
- return -EINVAL;
-
- if (dev->sensor_embedded_data) {
- memset(&mbus_code, 0, sizeof(mbus_code));
- mbus_code.index = f->index;
- mbus_code.which = V4L2_SUBDEV_FORMAT_ACTIVE;
- mbus_code.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;
- }
- } else {
- mbus_code.code = MEDIA_BUS_FMT_SENSOR_DATA;
- }
-
- fmt = find_format_by_code(mbus_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_try_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_s_fmt_meta_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_mbus_framefmt mbus_fmt = { 0 };
- const struct unicam_fmt *fmt;
- int ret;
-
- if (node->pad_id == IMAGE_PAD)
- return -EINVAL;
-
- if (dev->sensor_embedded_data) {
- fmt = find_format_by_pix(dev, f->fmt.meta.dataformat);
- if (!fmt) {
- unicam_err(dev, "unknown format: V4L2 pix 0x%08x\n",
- f->fmt.meta.dataformat);
- return -EINVAL;
- }
- mbus_fmt.code = 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;
- }
- }
-
- *f = node->v_fmt;
-
- unicam_dbg(3, dev, "%s size %d, V4L2 pix 0x%08x\n",
- __func__, node->v_fmt.fmt.meta.buffersize,
- node->v_fmt.fmt.meta.dataformat);
-
- 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 = container_of(vb, struct unicam_buffer,
- vb.vb2_buf);
- 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 = container_of(vb, struct unicam_buffer,
- vb.vb2_buf);
- struct unicam_dmaqueue *dma_queue = &node->dma_queue;
- unsigned long flags = 0;
-
- spin_lock_irqsave(&node->dma_queue_lock, flags);
- list_add_tail(&buf->list, &dma_queue->active);
- spin_unlock_irqrestore(&node->dma_queue_lock, flags);
-}
-
-static void unicam_set_packing_config(struct unicam_device *dev)
-{
- int 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->cfg, UNICAM_IPIPE, val);
-}
-
-static void unicam_cfg_image_id(struct unicam_device *dev)
-{
- struct unicam_cfg *cfg = &dev->cfg;
-
- if (dev->bus_type == V4L2_MBUS_CSI2_DPHY) {
- /* CSI2 mode */
- reg_write(cfg, UNICAM_IDI0,
- (dev->virtual_channel << 6) |
- dev->node[IMAGE_PAD].fmt->csi_dt);
- } else {
- /* CCP2 mode */
- reg_write(cfg, UNICAM_IDI0,
- 0x80 | dev->node[IMAGE_PAD].fmt->csi_dt);
- }
-}
-
-static void unicam_enable_ed(struct unicam_device *dev)
-{
- struct unicam_cfg *cfg = &dev->cfg;
- u32 val = reg_read(cfg, 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(cfg, UNICAM_DCS, val);
-}
-
-static void unicam_start_rx(struct unicam_device *dev, dma_addr_t *addr)
-{
- struct unicam_cfg *cfg = &dev->cfg;
- 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(cfg, val);
-
- /* Basic init */
- reg_write(cfg, 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(cfg, UNICAM_ANA, val);
- usleep_range(1000, 2000);
-
- /* Come out of reset */
- reg_write_field(cfg, UNICAM_ANA, 0, UNICAM_AR);
-
- /* Peripheral reset */
- reg_write_field(cfg, UNICAM_CTRL, 1, UNICAM_CPR);
- reg_write_field(cfg, UNICAM_CTRL, 0, UNICAM_CPR);
-
- reg_write_field(cfg, UNICAM_CTRL, 0, UNICAM_CPE);
-
- /* Enable Rx control. */
- val = reg_read(cfg, 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(cfg, UNICAM_CTRL, val);
-
- reg_write(cfg, UNICAM_IHWIN, 0);
- reg_write(cfg, UNICAM_IVWIN, 0);
-
- /* AXI bus access QoS setup */
- val = reg_read(&dev->cfg, 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(cfg, UNICAM_PRI, val);
-
- reg_write_field(cfg, 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(cfg, UNICAM_ICTL, val);
- reg_write(cfg, UNICAM_STA, UNICAM_STA_MASK_ALL);
- reg_write(cfg, UNICAM_ISTA, UNICAM_ISTA_MASK_ALL);
-
- /* tclk_term_en */
- reg_write_field(cfg, UNICAM_CLT, 2, UNICAM_CLT1_MASK);
- /* tclk_settle */
- reg_write_field(cfg, UNICAM_CLT, 6, UNICAM_CLT2_MASK);
- /* td_term_en */
- reg_write_field(cfg, UNICAM_DLT, 2, UNICAM_DLT1_MASK);
- /* ths_settle */
- reg_write_field(cfg, UNICAM_DLT, 6, UNICAM_DLT2_MASK);
- /* trx_enable */
- reg_write_field(cfg, UNICAM_DLT, 0, UNICAM_DLT3_MASK);
-
- reg_write_field(cfg, 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(cfg, 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(cfg, 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(cfg, UNICAM_DAT0, val);
-
- if (dev->active_data_lanes == 1)
- val = 0;
- reg_write(cfg, 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(cfg, UNICAM_DAT2, val);
-
- if (dev->active_data_lanes == 3)
- val = 0;
- reg_write(cfg, UNICAM_DAT3, val);
- }
-
- reg_write(&dev->cfg, 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->cfg, addr[IMAGE_PAD], size, IMAGE_PAD);
- unicam_set_packing_config(dev);
- unicam_cfg_image_id(dev);
-
- val = reg_read(cfg, UNICAM_MISC);
- set_field(&val, 1, UNICAM_FL0);
- set_field(&val, 1, UNICAM_FL1);
- reg_write(cfg, 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->cfg, addr[METADATA_PAD], size,
- METADATA_PAD);
- }
-
- /* Enable peripheral */
- reg_write_field(cfg, UNICAM_CTRL, 1, UNICAM_CPE);
-
- /* Load image pointers */
- reg_write_field(cfg, 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(cfg, UNICAM_DCS, 1, UNICAM_LDP);
-
- /*
- * Enable trigger only for the first frame to
- * sync correctly to the FS from the source.
- */
- reg_write_field(cfg, UNICAM_ICTL, 1, UNICAM_TFC);
-}
-
-static void unicam_disable(struct unicam_device *dev)
-{
- struct unicam_cfg *cfg = &dev->cfg;
-
- /* Analogue lane control disable */
- reg_write_field(cfg, UNICAM_ANA, 1, UNICAM_DDL);
-
- /* Stop the output engine */
- reg_write_field(cfg, UNICAM_CTRL, 1, UNICAM_SOE);
-
- /* Disable the data lanes. */
- reg_write(cfg, UNICAM_DAT0, 0);
- reg_write(cfg, UNICAM_DAT1, 0);
-
- if (dev->max_data_lanes > 2) {
- reg_write(cfg, UNICAM_DAT2, 0);
- reg_write(cfg, UNICAM_DAT3, 0);
- }
-
- /* Peripheral reset */
- reg_write_field(cfg, UNICAM_CTRL, 1, UNICAM_CPR);
- usleep_range(50, 100);
- reg_write_field(cfg, UNICAM_CTRL, 0, UNICAM_CPR);
-
- /* Disable peripheral */
- reg_write_field(cfg, UNICAM_CTRL, 0, UNICAM_CPE);
-
- /* Clear ED setup */
- reg_write(cfg, UNICAM_DCS, 0);
-
- /* Disable all lane clocks */
- clk_write(cfg, 0);
-}
-
-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;
- struct unicam_buffer *buf;
- dma_addr_t buffer_addr[MAX_NODES] = { 0 };
- int num_nodes_streaming;
- unsigned long flags;
- int ret, i;
-
- node->streaming = 1;
- if (!unicam_all_nodes_streaming(dev)) {
- 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");
- return ret;
- }
-
- dev->active_data_lanes = dev->max_data_lanes;
- if (dev->bus_type == V4L2_MBUS_CSI2_DPHY &&
- v4l2_subdev_has_op(dev->sensor, video, g_mbus_config)) {
- struct v4l2_mbus_config mbus_config;
-
- ret = v4l2_subdev_call(dev->sensor, video, g_mbus_config,
- &mbus_config);
- if (ret < 0) {
- unicam_dbg(3, dev, "g_mbus_config failed\n");
- goto err_pm_put;
- }
-
- dev->active_data_lanes =
- (mbus_config.flags & V4L2_MBUS_CSI2_LANE_MASK) >>
- __ffs(V4L2_MBUS_CSI2_LANE_MASK);
- if (!dev->active_data_lanes)
- dev->active_data_lanes = dev->max_data_lanes;
- }
- if (dev->active_data_lanes > dev->max_data_lanes) {
- unicam_err(dev, "Device has requested %u data lanes, which is >%u configured in DT\n",
- dev->active_data_lanes, dev->max_data_lanes);
- ret = -EINVAL;
- goto err_pm_put;
- }
-
- unicam_dbg(1, dev, "Running with %u data lanes\n",
- dev->active_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;
- }
-
- num_nodes_streaming = unicam_num_nodes_streaming(dev);
- for (i = 0; i < num_nodes_streaming; i++) {
- spin_lock_irqsave(&dev->node[i].dma_queue_lock, flags);
- buf = list_entry(dev->node[i].dma_queue.active.next,
- 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(&dev->node[i].cur_frm->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:
- node->streaming = 0;
- unicam_disable(dev);
- clk_disable_unprepare(dev->clock);
-err_pm_put:
- unicam_runtime_put(dev);
-
- 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;
- struct unicam_dmaqueue *dma_q = &node->dma_queue;
- struct unicam_buffer *buf, *tmp;
- unsigned long flags;
-
- node->streaming = 0;
-
- 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. The 0x3 in the top two bits
- * signifies uncached accesses through the Videocore memory
- * controller.
- */
- unicam_wr_dma_addr(&dev->cfg, node->dummy_buf_dma_addr,
- DUMMY_BUF_SIZE, METADATA_PAD);
- }
-
- /* Clear all queued buffers for the node */
- spin_lock_irqsave(&node->dma_queue_lock, flags);
- list_for_each_entry_safe(buf, tmp, &dma_q->active, 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_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)
- inp->std = V4L2_STD_ALL;
- } else {
- inp->capabilities = 0;
- inp->std = 0;
- }
- sprintf(inp->name, "Camera 0");
- 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;
-
- if (node->pad_id == IMAGE_PAD) {
- /* 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;
- } else {
- /* This pad is for embedded data, so just set the format */
- fse.code = MEDIA_BUS_FMT_SENSOR_DATA;
- }
-
- 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);
-
- 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;
- struct unicam_cfg *cfg = &dev->cfg;
- 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->cfg, 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(cfg, UNICAM_IBLS));
- unicam_info(dev, "Detected resolution: %ux%u\n",
- reg_read(cfg, UNICAM_IHSTA),
- reg_read(cfg, UNICAM_IVSTA));
- unicam_info(dev, "Write pointer: %08x\n",
- reg_read(cfg, UNICAM_IBWP));
-
- return 0;
-}
-
-static void unicam_notify(struct v4l2_subdev *sd,
- unsigned int notification, void *arg)
-{
- struct unicam_device *dev =
- container_of(sd->v4l2_dev, struct unicam_device, 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_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_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_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_open,
- .release = unicam_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_s_fmt_meta_cap,
- .vidioc_try_fmt_meta_cap = unicam_try_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 = container_of(notifier->v4l2_dev,
- struct unicam_device, 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 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 (unicam->sensor_embedded_data || pad_id != METADATA_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;
- }
- } else {
- /* Fix this node format as embedded data. */
- fmt = find_format_by_code(MEDIA_BUS_FMT_SENSOR_DATA);
- }
-
- node->dev = unicam;
- node->pad_id = pad_id;
- node->fmt = fmt;
- if (fmt->fourcc) {
- if (fmt->fourcc != V4L2_META_FMT_SENSOR_DATA)
- node->v_fmt.fmt.pix.pixelformat = fmt->fourcc;
- else
- node->v_fmt.fmt.meta.dataformat = fmt->fourcc;
- } else {
- node->v_fmt.fmt.pix.pixelformat = fmt->repacked_fourcc;
- }
-
- /* 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(&node->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(&node->ctrl_handler.ctrls))
- vdev->ctrl_handler = &node->ctrl_handler;
- }
-
- q = &node->buffer_queue;
- q->type = type;
- q->io_modes = VB2_MMAP | VB2_DMABUF | VB2_READ;
- q->drv_priv = node;
- q->ops = &unicam_video_qops;
- q->mem_ops = &vb2_dma_contig_memops;
- q->buf_struct_size = sizeof(struct unicam_buffer);
- q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
- q->lock = &node->lock;
- q->min_buffers_needed = 1;
- q->dev = &unicam->pdev->dev;
-
- ret = vb2_queue_init(q);
- if (ret) {
- unicam_err(unicam, "vb2_queue_init() failed\n");
- return ret;
- }
-
- INIT_LIST_HEAD(&node->dma_queue.active);
-
- vdev->release = video_device_release_empty;
- 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,
- node->pad_id == IMAGE_PAD ? "image" : "embedded");
-
- video_set_drvdata(vdev, node);
- vdev->entity.flags |= MEDIA_ENT_FL_DEFAULT;
-
- node->dummy_buf_cpu_addr = dma_alloc_coherent(&unicam->pdev->dev,
- DUMMY_BUF_SIZE,
- &node->dummy_buf_dma_addr,
- GFP_ATOMIC);
- if (!node->dummy_buf_cpu_addr) {
- unicam_err(unicam, "Unable to allocate dummy buffer.\n");
- return -ENOMEM;
- }
-
- if (node->pad_id == METADATA_PAD) {
- v4l2_disable_ioctl(vdev, VIDIOC_DQEVENT);
- v4l2_disable_ioctl(vdev, VIDIOC_SUBSCRIBE_EVENT);
- v4l2_disable_ioctl(vdev, VIDIOC_UNSUBSCRIBE_EVENT);
- }
- if (node->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 (node->pad_id == METADATA_PAD ||
- !v4l2_subdev_has_op(unicam->sensor, video, querystd))
- v4l2_disable_ioctl(&node->video_dev, VIDIOC_QUERYSTD);
- if (node->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 (node->pad_id == METADATA_PAD ||
- !v4l2_subdev_has_op(unicam->sensor, pad, enum_frame_interval))
- v4l2_disable_ioctl(&node->video_dev,
- VIDIOC_ENUM_FRAMEINTERVALS);
- if (node->pad_id == METADATA_PAD ||
- !v4l2_subdev_has_op(unicam->sensor, video, g_frame_interval))
- v4l2_disable_ioctl(&node->video_dev, VIDIOC_G_PARM);
- if (node->pad_id == METADATA_PAD ||
- !v4l2_subdev_has_op(unicam->sensor, video, s_frame_interval))
- v4l2_disable_ioctl(&node->video_dev, VIDIOC_S_PARM);
-
- if (node->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);
-
- ret = video_register_device(vdev, VFL_TYPE_GRABBER, -1);
- if (ret) {
- unicam_err(unicam, "Unable to register video device.\n");
- return ret;
- }
- node->registered = 1;
-
- if (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 links.\n");
- }
-
- return ret;
-}
-
-static void unregister_nodes(struct unicam_device *unicam)
-{
- struct unicam_node *node;
- int i;
-
- for (i = 0; i < MAX_NODES; i++) {
- 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) {
- video_unregister_device(&node->video_dev);
- node->registered = 0;
- }
- }
-}
-
-static int unicam_probe_complete(struct unicam_device *unicam)
-{
- int ret;
-
- v4l2_set_subdev_hostdata(unicam->sensor, unicam);
-
- 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 subdev node 0.\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 subdev node 1.\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;
- }
-
- return 0;
-
-unregister:
- unregister_nodes(unicam);
-
- return ret;
-}
-
-static int unicam_async_complete(struct v4l2_async_notifier *notifier)
-{
- struct unicam_device *unicam = container_of(notifier->v4l2_dev,
- struct unicam_device, 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 device_node *parent, *ep_node = NULL, *remote_ep = NULL,
- *sensor_node = NULL;
- struct v4l2_fwnode_endpoint *ep;
- struct v4l2_async_subdev *asd;
- unsigned int peripheral_data_lanes;
- int ret = -EINVAL;
- unsigned int lane;
-
- parent = pdev->dev.of_node;
-
- asd = &dev->asd;
- ep = &dev->endpoint;
-
- ep_node = of_graph_get_next_endpoint(parent, NULL);
- if (!ep_node) {
- unicam_dbg(3, dev, "can't get next endpoint\n");
- goto cleanup_exit;
- }
-
- unicam_dbg(3, dev, "ep_node is %s\n", ep_node->name);
-
- v4l2_fwnode_endpoint_parse(of_fwnode_handle(ep_node), ep);
-
- 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, "Local endpoint - data lane reordering not supported\n");
- goto cleanup_exit;
- }
- }
-
- peripheral_data_lanes = ep->bus.mipi_csi2.num_data_lanes;
-
- 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(3, dev, "sensor_node is %s\n", sensor_node->name);
- asd->match_type = V4L2_ASYNC_MATCH_FWNODE;
- asd->match.fwnode = of_fwnode_handle(sensor_node);
-
- remote_ep = of_graph_get_remote_endpoint(ep_node);
- if (!remote_ep) {
- unicam_dbg(3, dev, "can't get remote-endpoint\n");
- goto cleanup_exit;
- }
- unicam_dbg(3, dev, "remote_ep is %s\n", remote_ep->name);
- v4l2_fwnode_endpoint_parse(of_fwnode_handle(remote_ep), ep);
- unicam_dbg(3, dev, "parsed remote_ep to endpoint. nr_of_link_frequencies %u, bus_type %u\n",
- ep->nr_of_link_frequencies, ep->bus_type);
-
- switch (ep->bus_type) {
- case V4L2_MBUS_CSI2_DPHY:
- if (ep->bus.mipi_csi2.num_data_lanes >
- peripheral_data_lanes) {
- unicam_err(dev, "Subdevice %s wants too many data lanes (%u > %u)\n",
- sensor_node->name,
- ep->bus.mipi_csi2.num_data_lanes,
- peripheral_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 %s - incompatible data lane config\n",
- sensor_node->name);
- goto cleanup_exit;
- }
- }
- 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 %s incompatible lane config\n",
- sensor_node->name);
- goto cleanup_exit;
- }
- dev->max_data_lanes = 1;
- dev->bus_flags = ep->bus.mipi_csi1.strobe;
- break;
- default:
- /* Unsupported bus type */
- unicam_err(dev, "sub-device %s is not a CSI2 or CCP2 device %d\n",
- sensor_node->name, ep->bus_type);
- goto cleanup_exit;
- }
-
- /* Store bus type - CSI2 or CCP2 */
- dev->bus_type = ep->bus_type;
- unicam_dbg(3, dev, "bus_type is %d\n", dev->bus_type);
-
- /* Store Virtual Channel number */
- dev->virtual_channel = ep->base.id;
-
- unicam_dbg(3, dev, "v4l2-endpoint: %s\n",
- dev->bus_type == V4L2_MBUS_CSI2_DPHY ? "CSI2" : "CCP2");
- unicam_dbg(3, dev, "Virtual Channel=%d\n", dev->virtual_channel);
- if (dev->bus_type == V4L2_MBUS_CSI2_DPHY)
- unicam_dbg(3, dev, "flags=0x%08x\n", ep->bus.mipi_csi2.flags);
- unicam_dbg(3, dev, "num_data_lanes=%d\n", dev->max_data_lanes);
-
- unicam_dbg(1, dev, "found sub-device %s\n", sensor_node->name);
-
- v4l2_async_notifier_init(&dev->notifier);
-
- ret = v4l2_async_notifier_add_subdev(&dev->notifier, asd);
- if (ret) {
- unicam_err(dev, "Error adding subdevice - ret %d\n", ret);
- goto cleanup_exit;
- }
-
- dev->notifier.ops = &unicam_async_ops;
- ret = v4l2_async_notifier_register(&dev->v4l2_dev,
- &dev->notifier);
- if (ret) {
- unicam_err(dev, "Error registering async notifier - ret %d\n",
- ret);
- ret = -EINVAL;
- }
-
-cleanup_exit:
- if (remote_ep)
- of_node_put(remote_ep);
- if (sensor_node)
- of_node_put(sensor_node);
- if (ep_node)
- of_node_put(ep_node);
-
- return ret;
-}
-
-static int unicam_probe(struct platform_device *pdev)
-{
- struct unicam_cfg *unicam_cfg;
- struct unicam_device *unicam;
- struct v4l2_ctrl_handler *hdl;
- struct resource *res;
- int ret;
-
- unicam = devm_kzalloc(&pdev->dev, sizeof(*unicam), GFP_KERNEL);
- if (!unicam)
- return -ENOMEM;
-
- unicam->pdev = pdev;
- unicam_cfg = &unicam->cfg;
-
- res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- unicam_cfg->base = devm_ioremap_resource(&pdev->dev, res);
- if (IS_ERR(unicam_cfg->base)) {
- unicam_err(unicam, "Failed to get main io block\n");
- return PTR_ERR(unicam_cfg->base);
- }
-
- res = platform_get_resource(pdev, IORESOURCE_MEM, 1);
- unicam_cfg->clk_gate_base = devm_ioremap_resource(&pdev->dev, res);
- if (IS_ERR(unicam_cfg->clk_gate_base)) {
- unicam_err(unicam, "Failed to get 2nd io block\n");
- return PTR_ERR(unicam_cfg->clk_gate_base);
- }
-
- unicam->clock = devm_clk_get(&pdev->dev, "lp");
- if (IS_ERR(unicam->clock)) {
- unicam_err(unicam, "Failed to get clock\n");
- return PTR_ERR(unicam->clock);
- }
-
- ret = platform_get_irq(pdev, 0);
- if (ret <= 0) {
- dev_err(&pdev->dev, "No IRQ resource\n");
- return -ENODEV;
- }
-
- ret = devm_request_irq(&pdev->dev, ret, unicam_isr, 0,
- "unicam_capture0", unicam);
- if (ret) {
- dev_err(&pdev->dev, "Unable to request interrupt\n");
- return -EINVAL;
- }
-
- 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 %s",
- pdev->dev.driver->name, dev_name(&pdev->dev));
- unicam->mdev.hw_revision = 1;
-
- media_entity_pads_init(&unicam->node[IMAGE_PAD].video_dev.entity, 1,
- &unicam->node[IMAGE_PAD].pad);
- media_entity_pads_init(&unicam->node[METADATA_PAD].video_dev.entity, 1,
- &unicam->node[METADATA_PAD].pad);
- 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 media_cleanup;
- }
-
- ret = media_device_register(&unicam->mdev);
- if (ret < 0) {
- unicam_err(unicam,
- "Unable to register media-controller device.\n");
- goto probe_out_v4l2_unregister;
- }
-
- /* Reserve space for the controls */
- hdl = &unicam->node[IMAGE_PAD].ctrl_handler;
- ret = v4l2_ctrl_handler_init(hdl, 16);
- if (ret < 0)
- goto 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 free_hdl;
- }
-
- /* Enable the block power domain */
- pm_runtime_enable(&pdev->dev);
-
- return 0;
-
-free_hdl:
- v4l2_ctrl_handler_free(hdl);
-media_unregister:
- media_device_unregister(&unicam->mdev);
-probe_out_v4l2_unregister:
- v4l2_device_unregister(&unicam->v4l2_dev);
-media_cleanup:
- media_device_cleanup(&unicam->mdev);
-
- 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__);
-
- pm_runtime_disable(&pdev->dev);
-
- v4l2_async_notifier_unregister(&unicam->notifier);
- v4l2_ctrl_handler_free(&unicam->node[IMAGE_PAD].ctrl_handler);
- v4l2_device_unregister(&unicam->v4l2_dev);
- unregister_nodes(unicam);
- if (unicam->sensor_config)
- v4l2_subdev_free_pad_config(unicam->sensor_config);
- media_device_unregister(&unicam->mdev);
- media_device_cleanup(&unicam->mdev);
-
- 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);
projects / platform / kernel / linux-rpi.git / commitdiff