mirror of https://github.com/hak5/openwrt.git
2433 lines
68 KiB
Diff
2433 lines
68 KiB
Diff
From a961b21904be2f527afd87000d6bbf11d4ddecc8 Mon Sep 17 00:00:00 2001
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From: Dave Stevenson <dave.stevenson@raspberrypi.org>
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Date: Mon, 11 Sep 2017 15:42:28 +0100
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Subject: [PATCH 332/454] bcm2835-unicam: Driver for CCP2/CSI2 camera interface
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Add driver for the Unicam camera receiver block on
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BCM283x processors.
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Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.org>
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---
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drivers/media/platform/Kconfig | 1 +
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drivers/media/platform/Makefile | 1 +
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drivers/media/platform/bcm2835/Kconfig | 14 +
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drivers/media/platform/bcm2835/Makefile | 3 +
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.../media/platform/bcm2835/bcm2835-unicam.c | 2100 +++++++++++++++++
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.../media/platform/bcm2835/vc4-regs-unicam.h | 264 +++
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6 files changed, 2383 insertions(+)
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create mode 100644 drivers/media/platform/bcm2835/Kconfig
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create mode 100644 drivers/media/platform/bcm2835/Makefile
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create mode 100644 drivers/media/platform/bcm2835/bcm2835-unicam.c
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create mode 100644 drivers/media/platform/bcm2835/vc4-regs-unicam.h
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--- a/drivers/media/platform/Kconfig
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+++ b/drivers/media/platform/Kconfig
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@@ -150,6 +150,7 @@ source "drivers/media/platform/am437x/Kc
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source "drivers/media/platform/xilinx/Kconfig"
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source "drivers/media/platform/rcar-vin/Kconfig"
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source "drivers/media/platform/atmel/Kconfig"
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+source "drivers/media/platform/bcm2835/Kconfig"
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config VIDEO_TI_CAL
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tristate "TI CAL (Camera Adaptation Layer) driver"
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--- a/drivers/media/platform/Makefile
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+++ b/drivers/media/platform/Makefile
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@@ -91,3 +91,4 @@ obj-$(CONFIG_VIDEO_QCOM_CAMSS) += qcom/
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obj-$(CONFIG_VIDEO_QCOM_VENUS) += qcom/venus/
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obj-y += meson/
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+obj-y += bcm2835/
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--- /dev/null
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+++ b/drivers/media/platform/bcm2835/Kconfig
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@@ -0,0 +1,14 @@
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+# Broadcom VideoCore4 V4L2 camera support
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+
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+config VIDEO_BCM2835_UNICAM
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+ tristate "Broadcom BCM2835 Unicam video capture driver"
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+ depends on VIDEO_V4L2 && VIDEO_V4L2_SUBDEV_API
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+ depends on ARCH_BCM2835 || COMPILE_TEST
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+ select VIDEOBUF2_DMA_CONTIG
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+ select V4L2_FWNODE
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+ ---help---
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+ Say Y here to enable V4L2 subdevice for CSI2 receiver.
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+ This is a V4L2 subdevice that interfaces directly to the VC4 peripheral.
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+
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+ To compile this driver as a module, choose M here. The module
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+ will be called bcm2835-unicam.
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--- /dev/null
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+++ b/drivers/media/platform/bcm2835/Makefile
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@@ -0,0 +1,3 @@
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+# Makefile for BCM2835 Unicam driver
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+
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+obj-$(CONFIG_VIDEO_BCM2835_UNICAM) += bcm2835-unicam.o
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--- /dev/null
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+++ b/drivers/media/platform/bcm2835/bcm2835-unicam.c
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@@ -0,0 +1,2100 @@
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+/*
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+ * BCM2835 Unicam capture Driver
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+ *
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+ * Copyright (C) 2017 - Raspberry Pi (Trading) Ltd.
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+ *
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+ * Dave Stevenson <dave.stevenson@raspberrypi.org>
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+ *
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+ * Based on TI am437x driver by Benoit Parrot and Lad, Prabhakar and
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+ * TI CAL camera interface driver by Benoit Parrot.
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+ *
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+ *
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+ * There are two camera drivers in the kernel for BCM283x - this one
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+ * and bcm2835-camera (currently in staging).
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+ *
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+ * This driver directly controls the Unicam peripheral - there is no
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+ * involvement with the VideoCore firmware. Unicam receives CSI-2 or
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+ * CCP2 data and writes it into SDRAM. The only potential processing options are
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+ * to repack Bayer data into an alternate format, and applying windowing.
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+ * The repacking does not shift the data, so could repack V4L2_PIX_FMT_Sxxxx10P
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+ * to V4L2_PIX_FMT_Sxxxx10, or V4L2_PIX_FMT_Sxxxx12P to V4L2_PIX_FMT_Sxxxx12,
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+ * but not generically up to V4L2_PIX_FMT_Sxxxx16.
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+ * Adding support for repacking and windowing may be added later.
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+ *
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+ * It should be possible to connect this driver to any sensor with a
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+ * suitable output interface and V4L2 subdevice driver.
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+ *
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+ * bcm2835-camera uses the VideoCore firmware to control the sensor,
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+ * Unicam, ISP, and all tuner control loops. Fully processed frames are
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+ * delivered to the driver by the firmware. It only has sensor drivers
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+ * for Omnivision OV5647, and Sony IMX219 sensors.
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+ *
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+ * The two drivers are mutually exclusive for the same Unicam instance.
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+ * The VideoCore firmware checks the device tree configuration during boot.
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+ * If it finds device tree nodes called csi0 or csi1 it will block the
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+ * firmware from accessing the peripheral, and bcm2835-camera will
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+ * not be able to stream data.
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+ *
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+ *
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+ * This program is free software; you may redistribute it and/or modify
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+ * it under the terms of the GNU General Public License as published by
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+ * the Free Software Foundation; version 2 of the License.
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+ *
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+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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+ * SOFTWARE.
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+ */
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+
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+#include <linux/clk.h>
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+#include <linux/delay.h>
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+#include <linux/device.h>
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+#include <linux/err.h>
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+#include <linux/init.h>
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+#include <linux/interrupt.h>
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+#include <linux/io.h>
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+#include <linux/module.h>
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+#include <linux/of_device.h>
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+#include <linux/of_graph.h>
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+#include <linux/pinctrl/consumer.h>
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+#include <linux/platform_device.h>
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+#include <linux/pm_runtime.h>
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+#include <linux/slab.h>
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+#include <linux/uaccess.h>
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+#include <linux/videodev2.h>
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+
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+#include <media/v4l2-common.h>
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+#include <media/v4l2-ctrls.h>
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+#include <media/v4l2-dev.h>
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+#include <media/v4l2-device.h>
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+#include <media/v4l2-dv-timings.h>
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+#include <media/v4l2-event.h>
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+#include <media/v4l2-ioctl.h>
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+#include <media/v4l2-fwnode.h>
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+#include <media/videobuf2-dma-contig.h>
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+
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+#include "vc4-regs-unicam.h"
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+
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+#define UNICAM_MODULE_NAME "unicam"
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+#define UNICAM_VERSION "0.1.0"
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+
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+static int debug;
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+module_param(debug, int, 0644);
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+MODULE_PARM_DESC(debug, "Debug level 0-3");
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+
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+#define unicam_dbg(level, dev, fmt, arg...) \
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+ v4l2_dbg(level, debug, &(dev)->v4l2_dev, fmt, ##arg)
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+#define unicam_info(dev, fmt, arg...) \
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+ v4l2_info(&(dev)->v4l2_dev, fmt, ##arg)
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+#define unicam_err(dev, fmt, arg...) \
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+ v4l2_err(&(dev)->v4l2_dev, fmt, ##arg)
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+
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+/*
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+ * Stride is a 16 bit register, but also has to be a multiple of 16.
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+ */
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+#define BPL_ALIGNMENT 16
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+#define MAX_BYTESPERLINE ((1 << 16) - BPL_ALIGNMENT)
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+/*
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+ * Max width is therefore determined by the max stride divided by
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+ * the number of bits per pixel. Take 32bpp as a
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+ * worst case.
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+ * No imposed limit on the height, so adopt a square image for want
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+ * of anything better.
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+ */
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+#define MAX_WIDTH (MAX_BYTESPERLINE / 4)
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+#define MAX_HEIGHT MAX_WIDTH
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+/* Define a nominal minimum image size */
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+#define MIN_WIDTH 16
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+#define MIN_HEIGHT 16
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+/*
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+ * Whilst Unicam doesn't require any additional padding on the image
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+ * height, various other parts of the BCM283x frameworks require a multiple
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+ * of 16.
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+ * Seeing as image buffers are significantly larger than this extra
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+ * padding, add it in order to simplify integration.
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+ */
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+#define HEIGHT_ALIGNMENT 16
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+
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+/*
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+ * struct unicam_fmt - Unicam media bus format information
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+ * @pixelformat: V4L2 pixel format FCC identifier.
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+ * @code: V4L2 media bus format code.
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+ * @depth: Bits per pixel (when stored in memory).
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+ * @csi_dt: CSI data type.
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+ */
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+struct unicam_fmt {
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+ u32 fourcc;
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+ u32 code;
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+ u8 depth;
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+ u8 csi_dt;
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+};
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+
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+static const struct unicam_fmt formats[] = {
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+ /* YUV Formats */
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+ {
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+ .fourcc = V4L2_PIX_FMT_YUYV,
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+ .code = MEDIA_BUS_FMT_YUYV8_2X8,
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+ .depth = 16,
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+ .csi_dt = 0x1e,
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+ }, {
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+ .fourcc = V4L2_PIX_FMT_UYVY,
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+ .code = MEDIA_BUS_FMT_UYVY8_2X8,
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+ .depth = 16,
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+ .csi_dt = 0x1e,
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+ }, {
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+ .fourcc = V4L2_PIX_FMT_YVYU,
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+ .code = MEDIA_BUS_FMT_YVYU8_2X8,
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+ .depth = 16,
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+ .csi_dt = 0x1e,
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+ }, {
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+ .fourcc = V4L2_PIX_FMT_VYUY,
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+ .code = MEDIA_BUS_FMT_VYUY8_2X8,
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+ .depth = 16,
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+ .csi_dt = 0x1e,
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+ }, {
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+ .fourcc = V4L2_PIX_FMT_YUYV,
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+ .code = MEDIA_BUS_FMT_YUYV8_1X16,
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+ .depth = 16,
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+ .csi_dt = 0x1e,
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+ }, {
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+ .fourcc = V4L2_PIX_FMT_UYVY,
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+ .code = MEDIA_BUS_FMT_UYVY8_1X16,
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+ .depth = 16,
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+ .csi_dt = 0x1e,
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+ }, {
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+ .fourcc = V4L2_PIX_FMT_YVYU,
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+ .code = MEDIA_BUS_FMT_YVYU8_1X16,
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+ .depth = 16,
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+ .csi_dt = 0x1e,
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+ }, {
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+ .fourcc = V4L2_PIX_FMT_VYUY,
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+ .code = MEDIA_BUS_FMT_VYUY8_1X16,
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+ .depth = 16,
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+ .csi_dt = 0x1e,
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+ }, {
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+ /* RGB Formats */
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+ .fourcc = V4L2_PIX_FMT_RGB565, /* gggbbbbb rrrrrggg */
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+ .code = MEDIA_BUS_FMT_RGB565_2X8_LE,
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+ .depth = 16,
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+ .csi_dt = 0x22,
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+ }, {
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+ .fourcc = V4L2_PIX_FMT_RGB565X, /* rrrrrggg gggbbbbb */
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+ .code = MEDIA_BUS_FMT_RGB565_2X8_BE,
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+ .depth = 16,
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+ .csi_dt = 0x22
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+ }, {
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+ .fourcc = V4L2_PIX_FMT_RGB555, /* gggbbbbb arrrrrgg */
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+ .code = MEDIA_BUS_FMT_RGB555_2X8_PADHI_LE,
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+ .depth = 16,
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+ .csi_dt = 0x21,
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+ }, {
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+ .fourcc = V4L2_PIX_FMT_RGB555X, /* arrrrrgg gggbbbbb */
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+ .code = MEDIA_BUS_FMT_RGB555_2X8_PADHI_BE,
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+ .depth = 16,
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+ .csi_dt = 0x21,
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+ }, {
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+ .fourcc = V4L2_PIX_FMT_RGB24, /* rgb */
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+ .code = MEDIA_BUS_FMT_RGB888_1X24,
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+ .depth = 24,
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+ .csi_dt = 0x24,
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+ }, {
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+ .fourcc = V4L2_PIX_FMT_BGR24, /* bgr */
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+ .code = MEDIA_BUS_FMT_BGR888_1X24,
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+ .depth = 24,
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+ .csi_dt = 0x24,
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+ }, {
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+ .fourcc = V4L2_PIX_FMT_RGB32, /* argb */
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+ .code = MEDIA_BUS_FMT_ARGB8888_1X32,
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+ .depth = 32,
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+ .csi_dt = 0x0,
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+ }, {
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+ /* Bayer Formats */
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+ .fourcc = V4L2_PIX_FMT_SBGGR8,
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+ .code = MEDIA_BUS_FMT_SBGGR8_1X8,
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+ .depth = 8,
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+ .csi_dt = 0x2a,
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+ }, {
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+ .fourcc = V4L2_PIX_FMT_SGBRG8,
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+ .code = MEDIA_BUS_FMT_SGBRG8_1X8,
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+ .depth = 8,
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+ .csi_dt = 0x2a,
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+ }, {
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+ .fourcc = V4L2_PIX_FMT_SGRBG8,
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+ .code = MEDIA_BUS_FMT_SGRBG8_1X8,
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+ .depth = 8,
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+ .csi_dt = 0x2a,
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+ }, {
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+ .fourcc = V4L2_PIX_FMT_SRGGB8,
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+ .code = MEDIA_BUS_FMT_SRGGB8_1X8,
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+ .depth = 8,
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+ .csi_dt = 0x2a,
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+ }, {
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+ .fourcc = V4L2_PIX_FMT_SBGGR10P,
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+ .code = MEDIA_BUS_FMT_SBGGR10_1X10,
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+ .depth = 10,
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+ .csi_dt = 0x2b,
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+ }, {
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+ .fourcc = V4L2_PIX_FMT_SGBRG10P,
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+ .code = MEDIA_BUS_FMT_SGBRG10_1X10,
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+ .depth = 10,
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+ .csi_dt = 0x2b,
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+ }, {
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+ .fourcc = V4L2_PIX_FMT_SGRBG10P,
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+ .code = MEDIA_BUS_FMT_SGRBG10_1X10,
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+ .depth = 10,
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+ .csi_dt = 0x2b,
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+ }, {
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+ .fourcc = V4L2_PIX_FMT_SRGGB10P,
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+ .code = MEDIA_BUS_FMT_SRGGB10_1X10,
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+ .depth = 10,
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+ .csi_dt = 0x2b,
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+ }, {
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+ .fourcc = V4L2_PIX_FMT_SBGGR12P,
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+ .code = MEDIA_BUS_FMT_SBGGR12_1X12,
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+ .depth = 12,
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+ .csi_dt = 0x2c,
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+ }, {
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+ .fourcc = V4L2_PIX_FMT_SGBRG12P,
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+ .code = MEDIA_BUS_FMT_SGBRG12_1X12,
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+ .depth = 12,
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+ .csi_dt = 0x2c,
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+ }, {
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+ .fourcc = V4L2_PIX_FMT_SGRBG12P,
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+ .code = MEDIA_BUS_FMT_SGRBG12_1X12,
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+ .depth = 12,
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+ .csi_dt = 0x2c,
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+ }, {
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+ .fourcc = V4L2_PIX_FMT_SRGGB12P,
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+ .code = MEDIA_BUS_FMT_SRGGB12_1X12,
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+ .depth = 12,
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+ .csi_dt = 0x2c,
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+ },
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+ /*
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+ * 14 and 16 bit Bayer formats could be supported, but there are no V4L2
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+ * defines for 14bit packed Bayer, and no CSI2 data_type for raw 16.
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+ */
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+};
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+
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+struct unicam_dmaqueue {
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+ struct list_head active;
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+};
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+
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+struct unicam_buffer {
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+ struct vb2_v4l2_buffer vb;
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+ struct list_head list;
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+};
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+
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+struct unicam_cfg {
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+ /* peripheral base address */
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+ void __iomem *base;
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+ /* clock gating base address */
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+ void __iomem *clk_gate_base;
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+};
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+
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+#define MAX_POSSIBLE_PIX_FMTS (ARRAY_SIZE(formats))
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+
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+struct unicam_device {
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+ /* V4l2 specific parameters */
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+ /* Identifies video device for this channel */
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+ struct video_device video_dev;
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+ struct v4l2_ctrl_handler ctrl_handler;
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+
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+ struct v4l2_fwnode_endpoint endpoint;
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+
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+ struct v4l2_async_subdev asd;
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+
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+ /* unicam cfg */
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+ struct unicam_cfg cfg;
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+ /* clock handle */
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+ struct clk *clock;
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+ /* V4l2 device */
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+ struct v4l2_device v4l2_dev;
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+ /* parent device */
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+ struct platform_device *pdev;
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+ /* subdevice async Notifier */
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+ struct v4l2_async_notifier notifier;
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+ unsigned int sequence;
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+
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+ /* ptr to sub device */
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+ struct v4l2_subdev *sensor;
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+ /* Pad config for the sensor */
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+ struct v4l2_subdev_pad_config *sensor_config;
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+ /* current input at the sub device */
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+ int current_input;
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+
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+ /* Pointer pointing to current v4l2_buffer */
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+ struct unicam_buffer *cur_frm;
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+ /* Pointer pointing to next v4l2_buffer */
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+ struct unicam_buffer *next_frm;
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+
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+ /* video capture */
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+ const struct unicam_fmt *fmt;
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+ /* Used to store current pixel format */
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+ struct v4l2_format v_fmt;
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+ /* Used to store current mbus frame format */
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+ struct v4l2_mbus_framefmt m_fmt;
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+
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+ struct unicam_fmt active_fmts[MAX_POSSIBLE_PIX_FMTS];
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+ int num_active_fmt;
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+ unsigned int virtual_channel;
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+ enum v4l2_mbus_type bus_type;
|
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+ /*
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+ * Stores bus.mipi_csi2.flags for CSI2 sensors, or
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+ * bus.mipi_csi1.strobe for CCP2.
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+ */
|
|
+ unsigned int bus_flags;
|
|
+ unsigned int max_data_lanes;
|
|
+ unsigned int active_data_lanes;
|
|
+
|
|
+ struct v4l2_rect crop;
|
|
+
|
|
+ /* Currently selected input on subdev */
|
|
+ int input;
|
|
+
|
|
+ /* 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;
|
|
+ /* Flag to denote that we are processing buffers */
|
|
+ int streaming;
|
|
+};
|
|
+
|
|
+/* 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)
|
|
+{
|
|
+ int r;
|
|
+
|
|
+ r = pm_runtime_get_sync(&dev->pdev->dev);
|
|
+
|
|
+ return r;
|
|
+}
|
|
+
|
|
+static inline void unicam_runtime_put(struct unicam_device *dev)
|
|
+{
|
|
+ pm_runtime_put_sync(&dev->pdev->dev);
|
|
+}
|
|
+
|
|
+/* Format setup functions */
|
|
+static int find_mbus_depth_by_code(u32 code)
|
|
+{
|
|
+ const struct unicam_fmt *fmt;
|
|
+ unsigned int k;
|
|
+
|
|
+ for (k = 0; k < ARRAY_SIZE(formats); k++) {
|
|
+ fmt = &formats[k];
|
|
+ if (fmt->code == code)
|
|
+ return fmt->depth;
|
|
+ }
|
|
+
|
|
+ return 0;
|
|
+}
|
|
+
|
|
+static const struct unicam_fmt *find_format_by_code(struct unicam_device *dev,
|
|
+ u32 code)
|
|
+{
|
|
+ const struct unicam_fmt *fmt;
|
|
+ unsigned int k;
|
|
+
|
|
+ for (k = 0; k < dev->num_active_fmt; k++) {
|
|
+ fmt = &dev->active_fmts[k];
|
|
+ if (fmt->code == code)
|
|
+ return fmt;
|
|
+ }
|
|
+
|
|
+ return NULL;
|
|
+}
|
|
+
|
|
+static const struct unicam_fmt *find_format_by_pix(struct unicam_device *dev,
|
|
+ u32 pixelformat)
|
|
+{
|
|
+ const struct unicam_fmt *fmt;
|
|
+ unsigned int k;
|
|
+
|
|
+ for (k = 0; k < dev->num_active_fmt; k++) {
|
|
+ fmt = &dev->active_fmts[k];
|
|
+ if (fmt->fourcc == pixelformat)
|
|
+ return fmt;
|
|
+ }
|
|
+
|
|
+ return NULL;
|
|
+}
|
|
+
|
|
+static void dump_active_formats(struct unicam_device *dev)
|
|
+{
|
|
+ int i;
|
|
+
|
|
+ for (i = 0; i < dev->num_active_fmt; i++) {
|
|
+ unicam_dbg(3, dev, "active_fmt[%d] (%p) is code %04x, fourcc " V4L2_FOURCC_CONV ", depth %d\n",
|
|
+ i, &dev->active_fmts[i], dev->active_fmts[i].code,
|
|
+ V4L2_FOURCC_CONV_ARGS(dev->active_fmts[i].fourcc),
|
|
+ dev->active_fmts[i].depth);
|
|
+ }
|
|
+}
|
|
+
|
|
+static inline unsigned int bytes_per_line(u32 width,
|
|
+ const struct unicam_fmt *fmt)
|
|
+{
|
|
+ return ALIGN((width * fmt->depth) >> 3, BPL_ALIGNMENT);
|
|
+}
|
|
+
|
|
+static int __subdev_get_format(struct unicam_device *dev,
|
|
+ struct v4l2_mbus_framefmt *fmt)
|
|
+{
|
|
+ struct v4l2_subdev_format sd_fmt = {0};
|
|
+ struct v4l2_mbus_framefmt *mbus_fmt = &sd_fmt.format;
|
|
+ int ret;
|
|
+
|
|
+ sd_fmt.which = V4L2_SUBDEV_FORMAT_ACTIVE;
|
|
+ sd_fmt.pad = 0;
|
|
+
|
|
+ ret = v4l2_subdev_call(dev->sensor, pad, get_fmt, dev->sensor_config,
|
|
+ &sd_fmt);
|
|
+ if (ret < 0)
|
|
+ return ret;
|
|
+
|
|
+ *fmt = *mbus_fmt;
|
|
+
|
|
+ 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)
|
|
+{
|
|
+ struct v4l2_subdev_format sd_fmt = {
|
|
+ .which = V4L2_SUBDEV_FORMAT_ACTIVE,
|
|
+ };
|
|
+ struct v4l2_mbus_framefmt *mbus_fmt = &sd_fmt.format;
|
|
+ int ret;
|
|
+
|
|
+ *mbus_fmt = *fmt;
|
|
+
|
|
+ ret = v4l2_subdev_call(dev->sensor, pad, set_fmt, dev->sensor_config,
|
|
+ &sd_fmt);
|
|
+ if (ret < 0)
|
|
+ return ret;
|
|
+
|
|
+ unicam_dbg(1, dev, "%s %dx%d code:%04x\n", __func__,
|
|
+ fmt->width, fmt->height, fmt->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);
|
|
+
|
|
+ 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;
|
|
+
|
|
+ /* Align height up for compatibility with other hardware blocks */
|
|
+ f->fmt.pix.sizeimage = ALIGN(f->fmt.pix.height, HEIGHT_ALIGNMENT) *
|
|
+ f->fmt.pix.bytesperline;
|
|
+
|
|
+ unicam_dbg(3, dev, "%s: fourcc: " V4L2_FOURCC_CONV " size: %dx%d bpl:%d img_size:%d\n",
|
|
+ __func__,
|
|
+ V4L2_FOURCC_CONV_ARGS(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_device *dev)
|
|
+{
|
|
+ struct v4l2_mbus_framefmt mbus_fmt;
|
|
+ int ret;
|
|
+
|
|
+ ret = __subdev_get_format(dev, &mbus_fmt);
|
|
+ if (ret) {
|
|
+ unicam_err(dev, "Failed to get_format - ret %d\n", ret);
|
|
+ return ret;
|
|
+ }
|
|
+
|
|
+ if (mbus_fmt.code != dev->fmt->code) {
|
|
+ unicam_err(dev, "code mismatch - fmt->code %08x, mbus_fmt.code %08x\n",
|
|
+ dev->fmt->code, mbus_fmt.code);
|
|
+ return ret;
|
|
+ }
|
|
+
|
|
+ v4l2_fill_pix_format(&dev->v_fmt.fmt.pix, &mbus_fmt);
|
|
+ dev->v_fmt.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
|
|
+
|
|
+ unicam_calc_format_size_bpl(dev, dev->fmt, &dev->v_fmt);
|
|
+
|
|
+ dev->m_fmt = mbus_fmt;
|
|
+
|
|
+ return 0;
|
|
+}
|
|
+
|
|
+static void unicam_wr_dma_addr(struct unicam_device *dev, unsigned int dmaaddr)
|
|
+{
|
|
+ unicam_dbg(1, dev, "wr_dma_addr %08x-%08x\n",
|
|
+ dmaaddr, dmaaddr + dev->v_fmt.fmt.pix.sizeimage);
|
|
+ reg_write(&dev->cfg, UNICAM_IBSA0, dmaaddr);
|
|
+ reg_write(&dev->cfg, UNICAM_IBEA0,
|
|
+ dmaaddr + dev->v_fmt.fmt.pix.sizeimage);
|
|
+}
|
|
+
|
|
+static inline void unicam_schedule_next_buffer(struct unicam_device *dev)
|
|
+{
|
|
+ struct unicam_dmaqueue *dma_q = &dev->dma_queue;
|
|
+ struct unicam_buffer *buf;
|
|
+ dma_addr_t addr;
|
|
+
|
|
+ buf = list_entry(dma_q->active.next, struct unicam_buffer, list);
|
|
+ dev->next_frm = buf;
|
|
+ list_del(&buf->list);
|
|
+
|
|
+ addr = vb2_dma_contig_plane_dma_addr(&buf->vb.vb2_buf, 0);
|
|
+ unicam_wr_dma_addr(dev, addr);
|
|
+}
|
|
+
|
|
+static inline void unicam_process_buffer_complete(struct unicam_device *dev)
|
|
+{
|
|
+ dev->cur_frm->vb.field = dev->m_fmt.field;
|
|
+ dev->cur_frm->vb.sequence = dev->sequence++;
|
|
+
|
|
+ vb2_buffer_done(&dev->cur_frm->vb.vb2_buf, VB2_BUF_STATE_DONE);
|
|
+ dev->cur_frm = dev->next_frm;
|
|
+}
|
|
+
|
|
+/*
|
|
+ * 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;
|
|
+ struct unicam_dmaqueue *dma_q = &unicam->dma_queue;
|
|
+ int ista, sta;
|
|
+
|
|
+ /*
|
|
+ * 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->streaming)
|
|
+ return IRQ_HANDLED;
|
|
+
|
|
+ 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);
|
|
+
|
|
+ if (!(sta && (UNICAM_IS | UNICAM_PI0)))
|
|
+ return IRQ_HANDLED;
|
|
+
|
|
+ if (ista & UNICAM_FSI) {
|
|
+ /*
|
|
+ * Timestamp is to be when the first data byte was captured,
|
|
+ * aka frame start.
|
|
+ */
|
|
+ if (unicam->cur_frm)
|
|
+ unicam->cur_frm->vb.vb2_buf.timestamp = ktime_get_ns();
|
|
+ }
|
|
+ if (ista & UNICAM_FEI || sta & UNICAM_PI0) {
|
|
+ /*
|
|
+ * Ensure we have swapped buffers already as we can't
|
|
+ * stop the peripheral. Overwrite the frame we've just
|
|
+ * captured instead.
|
|
+ */
|
|
+ if (unicam->cur_frm && unicam->cur_frm != unicam->next_frm)
|
|
+ unicam_process_buffer_complete(unicam);
|
|
+ }
|
|
+
|
|
+ if (ista & (UNICAM_FSI | UNICAM_LCI)) {
|
|
+ spin_lock(&unicam->dma_queue_lock);
|
|
+ if (!list_empty(&dma_q->active) &&
|
|
+ unicam->cur_frm == unicam->next_frm)
|
|
+ unicam_schedule_next_buffer(unicam);
|
|
+ spin_unlock(&unicam->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_device *dev = video_drvdata(file);
|
|
+
|
|
+ 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);
|
|
+
|
|
+ return 0;
|
|
+}
|
|
+
|
|
+static int unicam_enum_fmt_vid_cap(struct file *file, void *priv,
|
|
+ struct v4l2_fmtdesc *f)
|
|
+{
|
|
+ struct unicam_device *dev = video_drvdata(file);
|
|
+ const struct unicam_fmt *fmt = NULL;
|
|
+
|
|
+ if (f->index >= dev->num_active_fmt)
|
|
+ return -EINVAL;
|
|
+
|
|
+ fmt = &dev->active_fmts[f->index];
|
|
+
|
|
+ f->pixelformat = fmt->fourcc;
|
|
+
|
|
+ return 0;
|
|
+}
|
|
+
|
|
+static int unicam_g_fmt_vid_cap(struct file *file, void *priv,
|
|
+ struct v4l2_format *f)
|
|
+{
|
|
+ struct unicam_device *dev = video_drvdata(file);
|
|
+
|
|
+ *f = dev->v_fmt;
|
|
+
|
|
+ return 0;
|
|
+}
|
|
+
|
|
+static int unicam_try_fmt_vid_cap(struct file *file, void *priv,
|
|
+ struct v4l2_format *f)
|
|
+{
|
|
+ struct unicam_device *dev = video_drvdata(file);
|
|
+ const struct unicam_fmt *fmt;
|
|
+ struct v4l2_subdev_format sd_fmt = {
|
|
+ .which = V4L2_SUBDEV_FORMAT_TRY,
|
|
+ };
|
|
+ struct v4l2_mbus_framefmt *mbus_fmt = &sd_fmt.format;
|
|
+ int ret;
|
|
+
|
|
+ fmt = find_format_by_pix(dev, f->fmt.pix.pixelformat);
|
|
+ if (!fmt) {
|
|
+ unicam_dbg(3, dev, "Fourcc format (0x%08x) not found. Use default of %08X\n",
|
|
+ f->fmt.pix.pixelformat, dev->active_fmts[0].fourcc);
|
|
+
|
|
+ /* Just get the first one enumerated */
|
|
+ fmt = &dev->active_fmts[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);
|
|
+ /*
|
|
+ * Use current colorspace for now, it will get
|
|
+ * updated properly during s_fmt
|
|
+ */
|
|
+ f->fmt.pix.colorspace = dev->v_fmt.fmt.pix.colorspace;
|
|
+ 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_device *dev = video_drvdata(file);
|
|
+ struct vb2_queue *q = &dev->buffer_queue;
|
|
+ const struct unicam_fmt *fmt;
|
|
+ struct v4l2_mbus_framefmt mbus_fmt = {0};
|
|
+ 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 */
|
|
+ fmt = &dev->active_fmts[0];
|
|
+ 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);
|
|
+ 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;
|
|
+ }
|
|
+
|
|
+ dev->fmt = fmt;
|
|
+ dev->v_fmt.fmt.pix.pixelformat = f->fmt.pix.pixelformat;
|
|
+ dev->v_fmt.fmt.pix.bytesperline = f->fmt.pix.bytesperline;
|
|
+ unicam_reset_format(dev);
|
|
+
|
|
+ unicam_dbg(3, dev, "%s %dx%d, mbus_fmt %08X, V4L2 pix " V4L2_FOURCC_CONV ".\n",
|
|
+ __func__, dev->v_fmt.fmt.pix.width,
|
|
+ dev->v_fmt.fmt.pix.height, mbus_fmt.code,
|
|
+ V4L2_FOURCC_CONV_ARGS(dev->v_fmt.fmt.pix.pixelformat));
|
|
+
|
|
+ *f = dev->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_device *dev = vb2_get_drv_priv(vq);
|
|
+ unsigned int size = dev->v_fmt.fmt.pix.sizeimage;
|
|
+
|
|
+ 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_device *dev = vb2_get_drv_priv(vb->vb2_queue);
|
|
+ struct unicam_buffer *buf = container_of(vb, struct unicam_buffer,
|
|
+ vb.vb2_buf);
|
|
+ unsigned long size;
|
|
+
|
|
+ if (WARN_ON(!dev->fmt))
|
|
+ return -EINVAL;
|
|
+
|
|
+ size = dev->v_fmt.fmt.pix.sizeimage;
|
|
+ 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_device *dev = 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 = &dev->dma_queue;
|
|
+ unsigned long flags = 0;
|
|
+
|
|
+ /* recheck locking */
|
|
+ spin_lock_irqsave(&dev->dma_queue_lock, flags);
|
|
+ list_add_tail(&buf->list, &dma_queue->active);
|
|
+ spin_unlock_irqrestore(&dev->dma_queue_lock, flags);
|
|
+}
|
|
+
|
|
+static void unicam_wr_dma_config(struct unicam_device *dev,
|
|
+ unsigned int stride)
|
|
+{
|
|
+ reg_write(&dev->cfg, UNICAM_IBLS, stride);
|
|
+}
|
|
+
|
|
+static void unicam_set_packing_config(struct unicam_device *dev)
|
|
+{
|
|
+ int mbus_depth = find_mbus_depth_by_code(dev->fmt->code);
|
|
+ int v4l2_depth = dev->fmt->depth;
|
|
+ int pack, unpack;
|
|
+ u32 val;
|
|
+
|
|
+ if (mbus_depth == v4l2_depth) {
|
|
+ unpack = UNICAM_PUM_NONE;
|
|
+ pack = UNICAM_PPM_NONE;
|
|
+ } else {
|
|
+ switch (mbus_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;
|
|
+ }
|
|
+ switch (v4l2_depth) {
|
|
+ case 8:
|
|
+ pack = UNICAM_PPM_PACK8;
|
|
+ break;
|
|
+ case 10:
|
|
+ pack = UNICAM_PPM_PACK10;
|
|
+ break;
|
|
+ case 12:
|
|
+ pack = UNICAM_PPM_PACK12;
|
|
+ break;
|
|
+ case 14:
|
|
+ pack = UNICAM_PPM_PACK14;
|
|
+ break;
|
|
+ case 16:
|
|
+ pack = UNICAM_PPM_PACK16;
|
|
+ break;
|
|
+ default:
|
|
+ pack = UNICAM_PPM_NONE;
|
|
+ break;
|
|
+ }
|
|
+ }
|
|
+
|
|
+ val = 0;
|
|
+ set_field(&val, 2, UNICAM_DEBL_MASK);
|
|
+ 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) {
|
|
+ /* CSI2 mode */
|
|
+ reg_write(cfg, UNICAM_IDI0,
|
|
+ (dev->virtual_channel << 6) | dev->fmt->csi_dt);
|
|
+ } else {
|
|
+ /* CCP2 mode */
|
|
+ reg_write(cfg, UNICAM_IDI0, (0x80 | dev->fmt->csi_dt));
|
|
+ }
|
|
+}
|
|
+
|
|
+void unicam_start_rx(struct unicam_device *dev, unsigned long addr)
|
|
+{
|
|
+ struct unicam_cfg *cfg = &dev->cfg;
|
|
+ int line_int_freq = dev->v_fmt.fmt.pix.height >> 2;
|
|
+ unsigned int 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) {
|
|
+ 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;
|
|
+ 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) {
|
|
+ /* 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) {
|
|
+ /* 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);
|
|
+ }
|
|
+
|
|
+ unicam_wr_dma_config(dev, dev->v_fmt.fmt.pix.bytesperline);
|
|
+ unicam_wr_dma_addr(dev, addr);
|
|
+ unicam_set_packing_config(dev);
|
|
+ unicam_cfg_image_id(dev);
|
|
+
|
|
+ /* Disabled embedded data */
|
|
+ val = 0;
|
|
+ set_field(&val, 0, UNICAM_EDL_MASK);
|
|
+ reg_write(cfg, UNICAM_DCS, val);
|
|
+
|
|
+ val = reg_read(cfg, UNICAM_MISC);
|
|
+ set_field(&val, 1, UNICAM_FL0);
|
|
+ set_field(&val, 1, UNICAM_FL1);
|
|
+ reg_write(cfg, UNICAM_MISC, val);
|
|
+
|
|
+ /* Enable peripheral */
|
|
+ reg_write_field(cfg, UNICAM_CTRL, 1, UNICAM_CPE);
|
|
+
|
|
+ /* Load image pointers */
|
|
+ reg_write_field(cfg, UNICAM_ICTL, 1, UNICAM_LIP_MASK);
|
|
+
|
|
+ /*
|
|
+ * 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);
|
|
+
|
|
+ /* Disable all lane clocks */
|
|
+ clk_write(cfg, 0);
|
|
+}
|
|
+
|
|
+static int unicam_start_streaming(struct vb2_queue *vq, unsigned int count)
|
|
+{
|
|
+ struct unicam_device *dev = vb2_get_drv_priv(vq);
|
|
+ struct unicam_dmaqueue *dma_q = &dev->dma_queue;
|
|
+ struct unicam_buffer *buf, *tmp;
|
|
+ unsigned long addr = 0;
|
|
+ unsigned long flags;
|
|
+ int ret;
|
|
+
|
|
+ spin_lock_irqsave(&dev->dma_queue_lock, flags);
|
|
+ buf = list_entry(dma_q->active.next, struct unicam_buffer, list);
|
|
+ dev->cur_frm = buf;
|
|
+ dev->next_frm = buf;
|
|
+ list_del(&buf->list);
|
|
+ spin_unlock_irqrestore(&dev->dma_queue_lock, flags);
|
|
+
|
|
+ addr = vb2_dma_contig_plane_dma_addr(&dev->cur_frm->vb.vb2_buf, 0);
|
|
+ dev->sequence = 0;
|
|
+
|
|
+ ret = unicam_runtime_get(dev);
|
|
+ if (ret < 0) {
|
|
+ unicam_dbg(3, dev, "unicam_runtime_get failed\n");
|
|
+ goto err_release_buffers;
|
|
+ }
|
|
+
|
|
+ dev->active_data_lanes = dev->max_data_lanes;
|
|
+ if (dev->bus_type == V4L2_MBUS_CSI2 &&
|
|
+ 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;
|
|
+ }
|
|
+ ret = v4l2_subdev_call(dev->sensor, core, s_power, 1);
|
|
+ if (ret < 0 && ret != -ENOIOCTLCMD) {
|
|
+ unicam_err(dev, "power on failed in subdev\n");
|
|
+ goto err_clock_unprepare;
|
|
+ }
|
|
+ dev->streaming = 1;
|
|
+
|
|
+ unicam_start_rx(dev, 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);
|
|
+ v4l2_subdev_call(dev->sensor, core, s_power, 0);
|
|
+err_clock_unprepare:
|
|
+ clk_disable_unprepare(dev->clock);
|
|
+err_pm_put:
|
|
+ unicam_runtime_put(dev);
|
|
+err_release_buffers:
|
|
+ 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_QUEUED);
|
|
+ }
|
|
+ if (dev->cur_frm != dev->next_frm)
|
|
+ vb2_buffer_done(&dev->next_frm->vb.vb2_buf,
|
|
+ VB2_BUF_STATE_QUEUED);
|
|
+ vb2_buffer_done(&dev->cur_frm->vb.vb2_buf, VB2_BUF_STATE_QUEUED);
|
|
+ dev->next_frm = NULL;
|
|
+ dev->cur_frm = NULL;
|
|
+
|
|
+ return ret;
|
|
+}
|
|
+
|
|
+static void unicam_stop_streaming(struct vb2_queue *vq)
|
|
+{
|
|
+ struct unicam_device *dev = vb2_get_drv_priv(vq);
|
|
+ struct unicam_dmaqueue *dma_q = &dev->dma_queue;
|
|
+ struct unicam_buffer *buf, *tmp;
|
|
+ unsigned long flags;
|
|
+
|
|
+ if (v4l2_subdev_call(dev->sensor, video, s_stream, 0) < 0)
|
|
+ unicam_err(dev, "stream off failed in subdev\n");
|
|
+
|
|
+ unicam_disable(dev);
|
|
+
|
|
+ /* Release all active buffers */
|
|
+ spin_lock_irqsave(&dev->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 (dev->cur_frm == dev->next_frm) {
|
|
+ vb2_buffer_done(&dev->cur_frm->vb.vb2_buf, VB2_BUF_STATE_ERROR);
|
|
+ } else {
|
|
+ vb2_buffer_done(&dev->cur_frm->vb.vb2_buf, VB2_BUF_STATE_ERROR);
|
|
+ vb2_buffer_done(&dev->next_frm->vb.vb2_buf,
|
|
+ VB2_BUF_STATE_ERROR);
|
|
+ }
|
|
+ dev->cur_frm = NULL;
|
|
+ dev->next_frm = NULL;
|
|
+ spin_unlock_irqrestore(&dev->dma_queue_lock, flags);
|
|
+
|
|
+ if (v4l2_subdev_has_op(dev->sensor, core, s_power)) {
|
|
+ if (v4l2_subdev_call(dev->sensor, core, s_power, 0) < 0)
|
|
+ unicam_err(dev, "power off failed in subdev\n");
|
|
+ }
|
|
+
|
|
+ clk_disable_unprepare(dev->clock);
|
|
+ unicam_runtime_put(dev);
|
|
+}
|
|
+
|
|
+static int unicam_enum_input(struct file *file, void *priv,
|
|
+ struct v4l2_input *inp)
|
|
+{
|
|
+ struct unicam_device *dev = video_drvdata(file);
|
|
+
|
|
+ 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_device *dev = video_drvdata(file);
|
|
+
|
|
+ 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_device *dev = video_drvdata(file);
|
|
+
|
|
+ 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_device *dev = video_drvdata(file);
|
|
+ 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(&dev->buffer_queue))
|
|
+ return -EBUSY;
|
|
+
|
|
+ ret = v4l2_subdev_call(dev->sensor, video, s_std, std);
|
|
+
|
|
+ /* Force recomputation of bytesperline */
|
|
+ dev->v_fmt.fmt.pix.bytesperline = 0;
|
|
+
|
|
+ unicam_reset_format(dev);
|
|
+
|
|
+ return ret;
|
|
+}
|
|
+
|
|
+static int unicam_s_edid(struct file *file, void *priv, struct v4l2_edid *edid)
|
|
+{
|
|
+ struct unicam_device *dev = video_drvdata(file);
|
|
+
|
|
+ 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_device *dev = video_drvdata(file);
|
|
+
|
|
+ return v4l2_subdev_call(dev->sensor, pad, get_edid, edid);
|
|
+}
|
|
+
|
|
+static int unicam_g_dv_timings(struct file *file, void *priv,
|
|
+ struct v4l2_dv_timings *timings)
|
|
+{
|
|
+ struct unicam_device *dev = video_drvdata(file);
|
|
+
|
|
+ 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_device *dev = video_drvdata(file);
|
|
+ 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(&dev->buffer_queue))
|
|
+ return -EBUSY;
|
|
+
|
|
+ ret = v4l2_subdev_call(dev->sensor, video, s_dv_timings, timings);
|
|
+
|
|
+ /* Force recomputation of bytesperline */
|
|
+ dev->v_fmt.fmt.pix.bytesperline = 0;
|
|
+
|
|
+ unicam_reset_format(dev);
|
|
+
|
|
+ return ret;
|
|
+}
|
|
+
|
|
+static int unicam_query_dv_timings(struct file *file, void *priv,
|
|
+ struct v4l2_dv_timings *timings)
|
|
+{
|
|
+ struct unicam_device *dev = video_drvdata(file);
|
|
+
|
|
+ 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_device *dev = video_drvdata(file);
|
|
+
|
|
+ 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_device *dev = video_drvdata(file);
|
|
+
|
|
+ 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_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_device *dev = video_drvdata(file);
|
|
+ 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",
|
|
+ dev->v_fmt.fmt.pix.width, dev->v_fmt.fmt.pix.height);
|
|
+ unicam_info(dev, "Mediabus format: %08x\n", dev->fmt->code);
|
|
+ unicam_info(dev, "V4L2 format: " V4L2_FOURCC_CONV "\n",
|
|
+ V4L2_FOURCC_CONV_ARGS(dev->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->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 capture driver file operations */
|
|
+static const struct v4l2_file_operations unicam_fops = {
|
|
+ .owner = THIS_MODULE,
|
|
+ .open = v4l2_fh_open,
|
|
+ .release = vb2_fop_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_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_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,
|
|
+};
|
|
+
|
|
+/*
|
|
+ * Adds an entry to the active_fmts array
|
|
+ * Returns non-zero if attempting to write off the end of the array.
|
|
+ */
|
|
+static int unicam_add_active_format(struct unicam_device *unicam,
|
|
+ const struct unicam_fmt *fmt)
|
|
+{
|
|
+ //Ensure we don't run off the end of the array.
|
|
+ if (unicam->num_active_fmt >= MAX_POSSIBLE_PIX_FMTS)
|
|
+ return 1;
|
|
+
|
|
+ unicam->active_fmts[unicam->num_active_fmt] = *fmt;
|
|
+ unicam_dbg(2, unicam,
|
|
+ "matched fourcc: " V4L2_FOURCC_CONV ": code: %04x idx: %d\n",
|
|
+ V4L2_FOURCC_CONV_ARGS(fmt->fourcc),
|
|
+ fmt->code, unicam->num_active_fmt);
|
|
+ unicam->num_active_fmt++;
|
|
+
|
|
+ return 0;
|
|
+}
|
|
+
|
|
+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);
|
|
+ struct v4l2_subdev_mbus_code_enum mbus_code;
|
|
+ int ret = 0;
|
|
+ int j;
|
|
+
|
|
+ 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);
|
|
+
|
|
+ /* Enumerate sub device formats and enable all matching local formats */
|
|
+ unicam->num_active_fmt = 0;
|
|
+ unicam_dbg(2, unicam, "Get supported formats...\n");
|
|
+ for (j = 0; ret != -EINVAL && ret != -ENOIOCTLCMD; ++j) {
|
|
+ const struct unicam_fmt *fmt = NULL;
|
|
+ int k;
|
|
+
|
|
+ memset(&mbus_code, 0, sizeof(mbus_code));
|
|
+ mbus_code.index = j;
|
|
+ ret = v4l2_subdev_call(subdev, pad, enum_mbus_code,
|
|
+ NULL, &mbus_code);
|
|
+ if (ret < 0) {
|
|
+ unicam_dbg(2, unicam,
|
|
+ "subdev->enum_mbus_code idx %d returned %d - continue\n",
|
|
+ j, ret);
|
|
+ continue;
|
|
+ }
|
|
+
|
|
+ unicam_dbg(2, unicam, "subdev %s: code: %04x idx: %d\n",
|
|
+ subdev->name, mbus_code.code, j);
|
|
+
|
|
+ for (k = 0; k < ARRAY_SIZE(formats); k++) {
|
|
+ if (mbus_code.code == formats[k].code) {
|
|
+ fmt = &formats[k];
|
|
+ break;
|
|
+ }
|
|
+ }
|
|
+ unicam_dbg(2, unicam, "fmt %04x returned as %p, V4L2 FOURCC %04x, csi_dt %02X\n",
|
|
+ mbus_code.code, fmt, fmt ? fmt->fourcc : 0,
|
|
+ fmt ? fmt->csi_dt : 0);
|
|
+ if (fmt) {
|
|
+ if (unicam_add_active_format(unicam, fmt)) {
|
|
+ unicam_dbg(1, unicam, "Active fmt list truncated\n");
|
|
+ break;
|
|
+ }
|
|
+ }
|
|
+ }
|
|
+ unicam_dbg(2, unicam,
|
|
+ "Done all formats\n");
|
|
+ dump_active_formats(unicam);
|
|
+
|
|
+ return 0;
|
|
+}
|
|
+
|
|
+static int unicam_probe_complete(struct unicam_device *unicam)
|
|
+{
|
|
+ struct video_device *vdev;
|
|
+ struct vb2_queue *q;
|
|
+ struct v4l2_mbus_framefmt mbus_fmt = {0};
|
|
+ const struct unicam_fmt *fmt;
|
|
+ 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;
|
|
+
|
|
+ ret = __subdev_get_format(unicam, &mbus_fmt);
|
|
+ if (ret) {
|
|
+ unicam_err(unicam, "Failed to get_format - ret %d\n", ret);
|
|
+ return ret;
|
|
+ }
|
|
+
|
|
+ fmt = find_format_by_code(unicam, mbus_fmt.code);
|
|
+ if (!fmt) {
|
|
+ /* Default image format not valid. Choose first active fmt. */
|
|
+ fmt = &unicam->active_fmts[0];
|
|
+ mbus_fmt.code = fmt->code;
|
|
+ ret = __subdev_set_format(unicam, &mbus_fmt);
|
|
+ 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);
|
|
+ if (ret)
|
|
+ return -EINVAL;
|
|
+ }
|
|
+
|
|
+ unicam->fmt = fmt;
|
|
+ unicam->v_fmt.fmt.pix.pixelformat = fmt->fourcc;
|
|
+
|
|
+ /* Read current subdev format */
|
|
+ unicam_reset_format(unicam);
|
|
+
|
|
+ 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;
|
|
+ unicam->video_dev.tvnorms |= tvnorms;
|
|
+ }
|
|
+
|
|
+ spin_lock_init(&unicam->dma_queue_lock);
|
|
+ mutex_init(&unicam->lock);
|
|
+
|
|
+ /* Add controls from the subdevice */
|
|
+ ret = v4l2_ctrl_add_handler(&unicam->ctrl_handler,
|
|
+ unicam->sensor->ctrl_handler, NULL);
|
|
+ if (ret < 0)
|
|
+ return ret;
|
|
+
|
|
+ q = &unicam->buffer_queue;
|
|
+ q->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
|
|
+ q->io_modes = VB2_MMAP | VB2_DMABUF | VB2_READ;
|
|
+ q->drv_priv = unicam;
|
|
+ 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 = &unicam->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(&unicam->dma_queue.active);
|
|
+
|
|
+ vdev = &unicam->video_dev;
|
|
+ strlcpy(vdev->name, UNICAM_MODULE_NAME, sizeof(vdev->name));
|
|
+ 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 = &unicam->lock;
|
|
+ vdev->device_caps = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_STREAMING |
|
|
+ V4L2_CAP_READWRITE;
|
|
+
|
|
+ /* If the source has no controls then remove our ctrl handler. */
|
|
+ if (list_empty(&unicam->ctrl_handler.ctrls))
|
|
+ unicam->v4l2_dev.ctrl_handler = NULL;
|
|
+
|
|
+ video_set_drvdata(vdev, unicam);
|
|
+ ret = video_register_device(vdev, VFL_TYPE_GRABBER, -1);
|
|
+ if (ret) {
|
|
+ unicam_err(unicam, "Unable to register video device.\n");
|
|
+ return ret;
|
|
+ }
|
|
+
|
|
+ if (!v4l2_subdev_has_op(unicam->sensor, video, s_std)) {
|
|
+ v4l2_disable_ioctl(&unicam->video_dev, VIDIOC_S_STD);
|
|
+ v4l2_disable_ioctl(&unicam->video_dev, VIDIOC_G_STD);
|
|
+ v4l2_disable_ioctl(&unicam->video_dev, VIDIOC_ENUMSTD);
|
|
+ }
|
|
+ if (!v4l2_subdev_has_op(unicam->sensor, video, querystd))
|
|
+ v4l2_disable_ioctl(&unicam->video_dev, VIDIOC_QUERYSTD);
|
|
+ if (!v4l2_subdev_has_op(unicam->sensor, video, s_dv_timings)) {
|
|
+ v4l2_disable_ioctl(&unicam->video_dev, VIDIOC_S_EDID);
|
|
+ v4l2_disable_ioctl(&unicam->video_dev, VIDIOC_G_EDID);
|
|
+ v4l2_disable_ioctl(&unicam->video_dev, VIDIOC_DV_TIMINGS_CAP);
|
|
+ v4l2_disable_ioctl(&unicam->video_dev, VIDIOC_G_DV_TIMINGS);
|
|
+ v4l2_disable_ioctl(&unicam->video_dev, VIDIOC_S_DV_TIMINGS);
|
|
+ v4l2_disable_ioctl(&unicam->video_dev, VIDIOC_ENUM_DV_TIMINGS);
|
|
+ v4l2_disable_ioctl(&unicam->video_dev, VIDIOC_QUERY_DV_TIMINGS);
|
|
+ }
|
|
+
|
|
+ ret = v4l2_device_register_subdev_nodes(&unicam->v4l2_dev);
|
|
+ if (ret) {
|
|
+ unicam_err(unicam,
|
|
+ "Unable to register subdev nodes.\n");
|
|
+ video_unregister_device(&unicam->video_dev);
|
|
+ return ret;
|
|
+ }
|
|
+
|
|
+ return 0;
|
|
+}
|
|
+
|
|
+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;
|
|
+ struct v4l2_async_subdev **subdevs = NULL;
|
|
+ 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.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:
|
|
+ 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 ? "CSI2" : "CCP2");
|
|
+ unicam_dbg(3, dev, "Virtual Channel=%d\n", dev->virtual_channel);
|
|
+ if (dev->bus_type == V4L2_MBUS_CSI2)
|
|
+ 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);
|
|
+
|
|
+ subdevs = devm_kzalloc(&dev->pdev->dev, sizeof(*subdevs), GFP_KERNEL);
|
|
+ if (!subdevs) {
|
|
+ ret = -ENOMEM;
|
|
+ goto cleanup_exit;
|
|
+ }
|
|
+ subdevs[0] = asd;
|
|
+ dev->notifier.subdevs = subdevs;
|
|
+ dev->notifier.num_subdevs = 1;
|
|
+ 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;
|
|
+ }
|
|
+
|
|
+ ret = v4l2_device_register(&pdev->dev, &unicam->v4l2_dev);
|
|
+ if (ret) {
|
|
+ unicam_err(unicam,
|
|
+ "Unable to register v4l2 device.\n");
|
|
+ return ret;
|
|
+ }
|
|
+
|
|
+ /* Reserve space for the controls */
|
|
+ hdl = &unicam->ctrl_handler;
|
|
+ ret = v4l2_ctrl_handler_init(hdl, 16);
|
|
+ if (ret < 0)
|
|
+ goto probe_out_v4l2_unregister;
|
|
+ unicam->v4l2_dev.ctrl_handler = hdl;
|
|
+
|
|
+ /* 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);
|
|
+probe_out_v4l2_unregister:
|
|
+ v4l2_device_unregister(&unicam->v4l2_dev);
|
|
+ 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->ctrl_handler);
|
|
+ v4l2_device_unregister(&unicam->v4l2_dev);
|
|
+ video_unregister_device(&unicam->video_dev);
|
|
+ if (unicam->sensor_config)
|
|
+ v4l2_subdev_free_pad_config(unicam->sensor_config);
|
|
+
|
|
+ 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.org>");
|
|
+MODULE_DESCRIPTION("BCM2835 Unicam driver");
|
|
+MODULE_LICENSE("GPL");
|
|
+MODULE_VERSION(UNICAM_VERSION);
|
|
--- /dev/null
|
|
+++ b/drivers/media/platform/bcm2835/vc4-regs-unicam.h
|
|
@@ -0,0 +1,264 @@
|
|
+/*
|
|
+ * Copyright (C) 2017 Raspberry Pi Trading.
|
|
+ * Dave Stevenson <dave.stevenson@raspberrypi.org>
|
|
+ *
|
|
+ * This program is free software; you can redistribute it and/or modify
|
|
+ * it under the terms of the GNU General Public License version 2 as
|
|
+ * published by the Free Software Foundation.
|
|
+ *
|
|
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
|
|
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
|
|
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
|
|
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
|
|
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
|
|
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
|
|
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
|
|
+ * SOFTWARE.
|
|
+ */
|
|
+
|
|
+#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
|