// SPDX-License-Identifier: GPL-2.0-only
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/*
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* Samsung EXYNOS FIMC-LITE (camera host interface) driver
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*
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* Copyright (C) 2012 - 2013 Samsung Electronics Co., Ltd.
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* Author: Sylwester Nawrocki <s.nawrocki@samsung.com>
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*/
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#define pr_fmt(fmt) "%s:%d " fmt, __func__, __LINE__
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#include <linux/bug.h>
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#include <linux/clk.h>
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#include <linux/device.h>
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#include <linux/errno.h>
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#include <linux/interrupt.h>
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#include <linux/kernel.h>
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#include <linux/list.h>
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#include <linux/module.h>
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#include <linux/of.h>
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#include <linux/types.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/videodev2.h>
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#include <media/v4l2-device.h>
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#include <media/v4l2-ioctl.h>
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#include <media/v4l2-mem2mem.h>
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#include <media/v4l2-rect.h>
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#include <media/videobuf2-v4l2.h>
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#include <media/videobuf2-dma-contig.h>
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#include <media/drv-intf/exynos-fimc.h>
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#include "common.h"
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#include "fimc-core.h"
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#include "fimc-lite.h"
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#include "fimc-lite-reg.h"
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static int debug;
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module_param(debug, int, 0644);
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static const struct fimc_fmt fimc_lite_formats[] = {
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{
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.fourcc = V4L2_PIX_FMT_YUYV,
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.colorspace = V4L2_COLORSPACE_JPEG,
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.depth = { 16 },
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.color = FIMC_FMT_YCBYCR422,
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.memplanes = 1,
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.mbus_code = MEDIA_BUS_FMT_YUYV8_2X8,
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.flags = FMT_FLAGS_YUV,
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}, {
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.fourcc = V4L2_PIX_FMT_UYVY,
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.colorspace = V4L2_COLORSPACE_JPEG,
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.depth = { 16 },
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.color = FIMC_FMT_CBYCRY422,
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.memplanes = 1,
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.mbus_code = MEDIA_BUS_FMT_UYVY8_2X8,
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.flags = FMT_FLAGS_YUV,
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}, {
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.fourcc = V4L2_PIX_FMT_VYUY,
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.colorspace = V4L2_COLORSPACE_JPEG,
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.depth = { 16 },
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.color = FIMC_FMT_CRYCBY422,
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.memplanes = 1,
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.mbus_code = MEDIA_BUS_FMT_VYUY8_2X8,
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.flags = FMT_FLAGS_YUV,
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}, {
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.fourcc = V4L2_PIX_FMT_YVYU,
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.colorspace = V4L2_COLORSPACE_JPEG,
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.depth = { 16 },
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.color = FIMC_FMT_YCRYCB422,
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.memplanes = 1,
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.mbus_code = MEDIA_BUS_FMT_YVYU8_2X8,
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.flags = FMT_FLAGS_YUV,
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}, {
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.fourcc = V4L2_PIX_FMT_SGRBG8,
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.colorspace = V4L2_COLORSPACE_SRGB,
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.depth = { 8 },
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.color = FIMC_FMT_RAW8,
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.memplanes = 1,
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.mbus_code = MEDIA_BUS_FMT_SGRBG8_1X8,
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.flags = FMT_FLAGS_RAW_BAYER,
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}, {
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.fourcc = V4L2_PIX_FMT_SGRBG10,
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.colorspace = V4L2_COLORSPACE_SRGB,
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.depth = { 16 },
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.color = FIMC_FMT_RAW10,
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.memplanes = 1,
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.mbus_code = MEDIA_BUS_FMT_SGRBG10_1X10,
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.flags = FMT_FLAGS_RAW_BAYER,
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}, {
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.fourcc = V4L2_PIX_FMT_SGRBG12,
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.colorspace = V4L2_COLORSPACE_SRGB,
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.depth = { 16 },
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.color = FIMC_FMT_RAW12,
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.memplanes = 1,
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.mbus_code = MEDIA_BUS_FMT_SGRBG12_1X12,
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.flags = FMT_FLAGS_RAW_BAYER,
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},
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};
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/**
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* fimc_lite_find_format - lookup fimc color format by fourcc or media bus code
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* @pixelformat: fourcc to match, ignored if null
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* @mbus_code: media bus code to match, ignored if null
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* @mask: the color format flags to match
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* @index: index to the fimc_lite_formats array, ignored if negative
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*/
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static const struct fimc_fmt *fimc_lite_find_format(const u32 *pixelformat,
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const u32 *mbus_code, unsigned int mask, int index)
|
{
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const struct fimc_fmt *fmt, *def_fmt = NULL;
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unsigned int i;
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int id = 0;
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if (index >= (int)ARRAY_SIZE(fimc_lite_formats))
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return NULL;
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for (i = 0; i < ARRAY_SIZE(fimc_lite_formats); ++i) {
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fmt = &fimc_lite_formats[i];
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if (mask && !(fmt->flags & mask))
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continue;
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if (pixelformat && fmt->fourcc == *pixelformat)
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return fmt;
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if (mbus_code && fmt->mbus_code == *mbus_code)
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return fmt;
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if (index == id)
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def_fmt = fmt;
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id++;
|
}
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return def_fmt;
|
}
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static int fimc_lite_hw_init(struct fimc_lite *fimc, bool isp_output)
|
{
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struct fimc_source_info *si;
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unsigned long flags;
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if (fimc->sensor == NULL)
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return -ENXIO;
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if (fimc->inp_frame.fmt == NULL || fimc->out_frame.fmt == NULL)
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return -EINVAL;
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/* Get sensor configuration data from the sensor subdev */
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si = v4l2_get_subdev_hostdata(fimc->sensor);
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if (!si)
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return -EINVAL;
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spin_lock_irqsave(&fimc->slock, flags);
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flite_hw_set_camera_bus(fimc, si);
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flite_hw_set_source_format(fimc, &fimc->inp_frame);
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flite_hw_set_window_offset(fimc, &fimc->inp_frame);
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flite_hw_set_dma_buf_mask(fimc, 0);
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flite_hw_set_output_dma(fimc, &fimc->out_frame, !isp_output);
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flite_hw_set_interrupt_mask(fimc);
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flite_hw_set_test_pattern(fimc, fimc->test_pattern->val);
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if (debug > 0)
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flite_hw_dump_regs(fimc, __func__);
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spin_unlock_irqrestore(&fimc->slock, flags);
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return 0;
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}
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/*
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* Reinitialize the driver so it is ready to start the streaming again.
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* Set fimc->state to indicate stream off and the hardware shut down state.
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* If not suspending (@suspend is false), return any buffers to videobuf2.
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* Otherwise put any owned buffers onto the pending buffers queue, so they
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* can be re-spun when the device is being resumed. Also perform FIMC
|
* software reset and disable streaming on the whole pipeline if required.
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*/
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static int fimc_lite_reinit(struct fimc_lite *fimc, bool suspend)
|
{
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struct flite_buffer *buf;
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unsigned long flags;
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bool streaming;
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spin_lock_irqsave(&fimc->slock, flags);
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streaming = fimc->state & (1 << ST_SENSOR_STREAM);
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fimc->state &= ~(1 << ST_FLITE_RUN | 1 << ST_FLITE_OFF |
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1 << ST_FLITE_STREAM | 1 << ST_SENSOR_STREAM);
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if (suspend)
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fimc->state |= (1 << ST_FLITE_SUSPENDED);
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else
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fimc->state &= ~(1 << ST_FLITE_PENDING |
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1 << ST_FLITE_SUSPENDED);
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/* Release unused buffers */
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while (!suspend && !list_empty(&fimc->pending_buf_q)) {
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buf = fimc_lite_pending_queue_pop(fimc);
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vb2_buffer_done(&buf->vb.vb2_buf, VB2_BUF_STATE_ERROR);
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}
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/* If suspending put unused buffers onto pending queue */
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while (!list_empty(&fimc->active_buf_q)) {
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buf = fimc_lite_active_queue_pop(fimc);
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if (suspend)
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fimc_lite_pending_queue_add(fimc, buf);
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else
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vb2_buffer_done(&buf->vb.vb2_buf, VB2_BUF_STATE_ERROR);
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}
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spin_unlock_irqrestore(&fimc->slock, flags);
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flite_hw_reset(fimc);
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if (!streaming)
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return 0;
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return fimc_pipeline_call(&fimc->ve, set_stream, 0);
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}
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static int fimc_lite_stop_capture(struct fimc_lite *fimc, bool suspend)
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{
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unsigned long flags;
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if (!fimc_lite_active(fimc))
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return 0;
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spin_lock_irqsave(&fimc->slock, flags);
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set_bit(ST_FLITE_OFF, &fimc->state);
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flite_hw_capture_stop(fimc);
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spin_unlock_irqrestore(&fimc->slock, flags);
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wait_event_timeout(fimc->irq_queue,
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!test_bit(ST_FLITE_OFF, &fimc->state),
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(2*HZ/10)); /* 200 ms */
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return fimc_lite_reinit(fimc, suspend);
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}
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/* Must be called with fimc.slock spinlock held. */
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static void fimc_lite_config_update(struct fimc_lite *fimc)
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{
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flite_hw_set_window_offset(fimc, &fimc->inp_frame);
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flite_hw_set_dma_window(fimc, &fimc->out_frame);
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flite_hw_set_test_pattern(fimc, fimc->test_pattern->val);
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clear_bit(ST_FLITE_CONFIG, &fimc->state);
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}
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static irqreturn_t flite_irq_handler(int irq, void *priv)
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{
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struct fimc_lite *fimc = priv;
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struct flite_buffer *vbuf;
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unsigned long flags;
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u32 intsrc;
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|
spin_lock_irqsave(&fimc->slock, flags);
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|
intsrc = flite_hw_get_interrupt_source(fimc);
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flite_hw_clear_pending_irq(fimc);
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|
if (test_and_clear_bit(ST_FLITE_OFF, &fimc->state)) {
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wake_up(&fimc->irq_queue);
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goto done;
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}
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if (intsrc & FLITE_REG_CISTATUS_IRQ_SRC_OVERFLOW) {
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clear_bit(ST_FLITE_RUN, &fimc->state);
|
fimc->events.data_overflow++;
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}
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|
if (intsrc & FLITE_REG_CISTATUS_IRQ_SRC_LASTCAPEND) {
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flite_hw_clear_last_capture_end(fimc);
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clear_bit(ST_FLITE_STREAM, &fimc->state);
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wake_up(&fimc->irq_queue);
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}
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if (atomic_read(&fimc->out_path) != FIMC_IO_DMA)
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goto done;
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|
if ((intsrc & FLITE_REG_CISTATUS_IRQ_SRC_FRMSTART) &&
|
test_bit(ST_FLITE_RUN, &fimc->state) &&
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!list_empty(&fimc->pending_buf_q)) {
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vbuf = fimc_lite_pending_queue_pop(fimc);
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flite_hw_set_dma_buffer(fimc, vbuf);
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fimc_lite_active_queue_add(fimc, vbuf);
|
}
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|
if ((intsrc & FLITE_REG_CISTATUS_IRQ_SRC_FRMEND) &&
|
test_bit(ST_FLITE_RUN, &fimc->state) &&
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!list_empty(&fimc->active_buf_q)) {
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vbuf = fimc_lite_active_queue_pop(fimc);
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vbuf->vb.vb2_buf.timestamp = ktime_get_ns();
|
vbuf->vb.sequence = fimc->frame_count++;
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flite_hw_mask_dma_buffer(fimc, vbuf->index);
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vb2_buffer_done(&vbuf->vb.vb2_buf, VB2_BUF_STATE_DONE);
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}
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if (test_bit(ST_FLITE_CONFIG, &fimc->state))
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fimc_lite_config_update(fimc);
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|
if (list_empty(&fimc->pending_buf_q)) {
|
flite_hw_capture_stop(fimc);
|
clear_bit(ST_FLITE_STREAM, &fimc->state);
|
}
|
done:
|
set_bit(ST_FLITE_RUN, &fimc->state);
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spin_unlock_irqrestore(&fimc->slock, flags);
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return IRQ_HANDLED;
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}
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static int start_streaming(struct vb2_queue *q, unsigned int count)
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{
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struct fimc_lite *fimc = q->drv_priv;
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unsigned long flags;
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int ret;
|
|
spin_lock_irqsave(&fimc->slock, flags);
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|
fimc->buf_index = 0;
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fimc->frame_count = 0;
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|
spin_unlock_irqrestore(&fimc->slock, flags);
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|
ret = fimc_lite_hw_init(fimc, false);
|
if (ret) {
|
fimc_lite_reinit(fimc, false);
|
return ret;
|
}
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|
set_bit(ST_FLITE_PENDING, &fimc->state);
|
|
if (!list_empty(&fimc->active_buf_q) &&
|
!test_and_set_bit(ST_FLITE_STREAM, &fimc->state)) {
|
flite_hw_capture_start(fimc);
|
|
if (!test_and_set_bit(ST_SENSOR_STREAM, &fimc->state))
|
fimc_pipeline_call(&fimc->ve, set_stream, 1);
|
}
|
if (debug > 0)
|
flite_hw_dump_regs(fimc, __func__);
|
|
return 0;
|
}
|
|
static void stop_streaming(struct vb2_queue *q)
|
{
|
struct fimc_lite *fimc = q->drv_priv;
|
|
if (!fimc_lite_active(fimc))
|
return;
|
|
fimc_lite_stop_capture(fimc, false);
|
}
|
|
static int queue_setup(struct vb2_queue *vq,
|
unsigned int *num_buffers, unsigned int *num_planes,
|
unsigned int sizes[], struct device *alloc_devs[])
|
{
|
struct fimc_lite *fimc = vq->drv_priv;
|
struct flite_frame *frame = &fimc->out_frame;
|
const struct fimc_fmt *fmt = frame->fmt;
|
unsigned long wh = frame->f_width * frame->f_height;
|
int i;
|
|
if (fmt == NULL)
|
return -EINVAL;
|
|
if (*num_planes) {
|
if (*num_planes != fmt->memplanes)
|
return -EINVAL;
|
for (i = 0; i < *num_planes; i++)
|
if (sizes[i] < (wh * fmt->depth[i]) / 8)
|
return -EINVAL;
|
return 0;
|
}
|
|
*num_planes = fmt->memplanes;
|
|
for (i = 0; i < fmt->memplanes; i++)
|
sizes[i] = (wh * fmt->depth[i]) / 8;
|
|
return 0;
|
}
|
|
static int buffer_prepare(struct vb2_buffer *vb)
|
{
|
struct vb2_queue *vq = vb->vb2_queue;
|
struct fimc_lite *fimc = vq->drv_priv;
|
int i;
|
|
if (fimc->out_frame.fmt == NULL)
|
return -EINVAL;
|
|
for (i = 0; i < fimc->out_frame.fmt->memplanes; i++) {
|
unsigned long size = fimc->payload[i];
|
|
if (vb2_plane_size(vb, i) < size) {
|
v4l2_err(&fimc->ve.vdev,
|
"User buffer too small (%ld < %ld)\n",
|
vb2_plane_size(vb, i), size);
|
return -EINVAL;
|
}
|
vb2_set_plane_payload(vb, i, size);
|
}
|
|
return 0;
|
}
|
|
static void buffer_queue(struct vb2_buffer *vb)
|
{
|
struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb);
|
struct flite_buffer *buf
|
= container_of(vbuf, struct flite_buffer, vb);
|
struct fimc_lite *fimc = vb2_get_drv_priv(vb->vb2_queue);
|
unsigned long flags;
|
|
spin_lock_irqsave(&fimc->slock, flags);
|
buf->paddr = vb2_dma_contig_plane_dma_addr(vb, 0);
|
|
buf->index = fimc->buf_index++;
|
if (fimc->buf_index >= fimc->reqbufs_count)
|
fimc->buf_index = 0;
|
|
if (!test_bit(ST_FLITE_SUSPENDED, &fimc->state) &&
|
!test_bit(ST_FLITE_STREAM, &fimc->state) &&
|
list_empty(&fimc->active_buf_q)) {
|
flite_hw_set_dma_buffer(fimc, buf);
|
fimc_lite_active_queue_add(fimc, buf);
|
} else {
|
fimc_lite_pending_queue_add(fimc, buf);
|
}
|
|
if (vb2_is_streaming(&fimc->vb_queue) &&
|
!list_empty(&fimc->pending_buf_q) &&
|
!test_and_set_bit(ST_FLITE_STREAM, &fimc->state)) {
|
flite_hw_capture_start(fimc);
|
spin_unlock_irqrestore(&fimc->slock, flags);
|
|
if (!test_and_set_bit(ST_SENSOR_STREAM, &fimc->state))
|
fimc_pipeline_call(&fimc->ve, set_stream, 1);
|
return;
|
}
|
spin_unlock_irqrestore(&fimc->slock, flags);
|
}
|
|
static const struct vb2_ops fimc_lite_qops = {
|
.queue_setup = queue_setup,
|
.buf_prepare = buffer_prepare,
|
.buf_queue = buffer_queue,
|
.wait_prepare = vb2_ops_wait_prepare,
|
.wait_finish = vb2_ops_wait_finish,
|
.start_streaming = start_streaming,
|
.stop_streaming = stop_streaming,
|
};
|
|
static void fimc_lite_clear_event_counters(struct fimc_lite *fimc)
|
{
|
unsigned long flags;
|
|
spin_lock_irqsave(&fimc->slock, flags);
|
memset(&fimc->events, 0, sizeof(fimc->events));
|
spin_unlock_irqrestore(&fimc->slock, flags);
|
}
|
|
static int fimc_lite_open(struct file *file)
|
{
|
struct fimc_lite *fimc = video_drvdata(file);
|
struct media_entity *me = &fimc->ve.vdev.entity;
|
int ret;
|
|
mutex_lock(&fimc->lock);
|
if (atomic_read(&fimc->out_path) != FIMC_IO_DMA) {
|
ret = -EBUSY;
|
goto unlock;
|
}
|
|
set_bit(ST_FLITE_IN_USE, &fimc->state);
|
ret = pm_runtime_resume_and_get(&fimc->pdev->dev);
|
if (ret < 0)
|
goto err_in_use;
|
|
ret = v4l2_fh_open(file);
|
if (ret < 0)
|
goto err_pm;
|
|
if (!v4l2_fh_is_singular_file(file) ||
|
atomic_read(&fimc->out_path) != FIMC_IO_DMA)
|
goto unlock;
|
|
mutex_lock(&me->graph_obj.mdev->graph_mutex);
|
|
ret = fimc_pipeline_call(&fimc->ve, open, me, true);
|
|
/* Mark video pipeline ending at this video node as in use. */
|
if (ret == 0)
|
me->use_count++;
|
|
mutex_unlock(&me->graph_obj.mdev->graph_mutex);
|
|
if (!ret) {
|
fimc_lite_clear_event_counters(fimc);
|
goto unlock;
|
}
|
|
v4l2_fh_release(file);
|
err_pm:
|
pm_runtime_put_sync(&fimc->pdev->dev);
|
err_in_use:
|
clear_bit(ST_FLITE_IN_USE, &fimc->state);
|
unlock:
|
mutex_unlock(&fimc->lock);
|
return ret;
|
}
|
|
static int fimc_lite_release(struct file *file)
|
{
|
struct fimc_lite *fimc = video_drvdata(file);
|
struct media_entity *entity = &fimc->ve.vdev.entity;
|
|
mutex_lock(&fimc->lock);
|
|
if (v4l2_fh_is_singular_file(file) &&
|
atomic_read(&fimc->out_path) == FIMC_IO_DMA) {
|
if (fimc->streaming) {
|
media_pipeline_stop(entity);
|
fimc->streaming = false;
|
}
|
fimc_lite_stop_capture(fimc, false);
|
fimc_pipeline_call(&fimc->ve, close);
|
clear_bit(ST_FLITE_IN_USE, &fimc->state);
|
|
mutex_lock(&entity->graph_obj.mdev->graph_mutex);
|
entity->use_count--;
|
mutex_unlock(&entity->graph_obj.mdev->graph_mutex);
|
}
|
|
_vb2_fop_release(file, NULL);
|
pm_runtime_put(&fimc->pdev->dev);
|
clear_bit(ST_FLITE_SUSPENDED, &fimc->state);
|
|
mutex_unlock(&fimc->lock);
|
return 0;
|
}
|
|
static const struct v4l2_file_operations fimc_lite_fops = {
|
.owner = THIS_MODULE,
|
.open = fimc_lite_open,
|
.release = fimc_lite_release,
|
.poll = vb2_fop_poll,
|
.unlocked_ioctl = video_ioctl2,
|
.mmap = vb2_fop_mmap,
|
};
|
|
/*
|
* Format and crop negotiation helpers
|
*/
|
|
static const struct fimc_fmt *fimc_lite_subdev_try_fmt(struct fimc_lite *fimc,
|
struct v4l2_subdev_pad_config *cfg,
|
struct v4l2_subdev_format *format)
|
{
|
struct flite_drvdata *dd = fimc->dd;
|
struct v4l2_mbus_framefmt *mf = &format->format;
|
const struct fimc_fmt *fmt = NULL;
|
|
if (format->pad == FLITE_SD_PAD_SINK) {
|
v4l_bound_align_image(&mf->width, 8, dd->max_width,
|
ffs(dd->out_width_align) - 1,
|
&mf->height, 0, dd->max_height, 0, 0);
|
|
fmt = fimc_lite_find_format(NULL, &mf->code, 0, 0);
|
if (WARN_ON(!fmt))
|
return NULL;
|
|
mf->colorspace = fmt->colorspace;
|
mf->code = fmt->mbus_code;
|
} else {
|
struct flite_frame *sink = &fimc->inp_frame;
|
struct v4l2_mbus_framefmt *sink_fmt;
|
struct v4l2_rect *rect;
|
|
if (format->which == V4L2_SUBDEV_FORMAT_TRY) {
|
sink_fmt = v4l2_subdev_get_try_format(&fimc->subdev, cfg,
|
FLITE_SD_PAD_SINK);
|
|
mf->code = sink_fmt->code;
|
mf->colorspace = sink_fmt->colorspace;
|
|
rect = v4l2_subdev_get_try_crop(&fimc->subdev, cfg,
|
FLITE_SD_PAD_SINK);
|
} else {
|
mf->code = sink->fmt->mbus_code;
|
mf->colorspace = sink->fmt->colorspace;
|
rect = &sink->rect;
|
}
|
|
/* Allow changing format only on sink pad */
|
mf->width = rect->width;
|
mf->height = rect->height;
|
}
|
|
mf->field = V4L2_FIELD_NONE;
|
|
v4l2_dbg(1, debug, &fimc->subdev, "code: %#x (%d), %dx%d\n",
|
mf->code, mf->colorspace, mf->width, mf->height);
|
|
return fmt;
|
}
|
|
static void fimc_lite_try_crop(struct fimc_lite *fimc, struct v4l2_rect *r)
|
{
|
struct flite_frame *frame = &fimc->inp_frame;
|
|
v4l_bound_align_image(&r->width, 0, frame->f_width, 0,
|
&r->height, 0, frame->f_height, 0, 0);
|
|
/* Adjust left/top if cropping rectangle got out of bounds */
|
r->left = clamp_t(u32, r->left, 0, frame->f_width - r->width);
|
r->left = round_down(r->left, fimc->dd->win_hor_offs_align);
|
r->top = clamp_t(u32, r->top, 0, frame->f_height - r->height);
|
|
v4l2_dbg(1, debug, &fimc->subdev, "(%d,%d)/%dx%d, sink fmt: %dx%d\n",
|
r->left, r->top, r->width, r->height,
|
frame->f_width, frame->f_height);
|
}
|
|
static void fimc_lite_try_compose(struct fimc_lite *fimc, struct v4l2_rect *r)
|
{
|
struct flite_frame *frame = &fimc->out_frame;
|
struct v4l2_rect *crop_rect = &fimc->inp_frame.rect;
|
|
/* Scaling is not supported so we enforce compose rectangle size
|
same as size of the sink crop rectangle. */
|
r->width = crop_rect->width;
|
r->height = crop_rect->height;
|
|
/* Adjust left/top if the composing rectangle got out of bounds */
|
r->left = clamp_t(u32, r->left, 0, frame->f_width - r->width);
|
r->left = round_down(r->left, fimc->dd->out_hor_offs_align);
|
r->top = clamp_t(u32, r->top, 0, fimc->out_frame.f_height - r->height);
|
|
v4l2_dbg(1, debug, &fimc->subdev, "(%d,%d)/%dx%d, source fmt: %dx%d\n",
|
r->left, r->top, r->width, r->height,
|
frame->f_width, frame->f_height);
|
}
|
|
/*
|
* Video node ioctl operations
|
*/
|
static int fimc_lite_querycap(struct file *file, void *priv,
|
struct v4l2_capability *cap)
|
{
|
struct fimc_lite *fimc = video_drvdata(file);
|
|
strscpy(cap->driver, FIMC_LITE_DRV_NAME, sizeof(cap->driver));
|
strscpy(cap->card, FIMC_LITE_DRV_NAME, sizeof(cap->card));
|
snprintf(cap->bus_info, sizeof(cap->bus_info), "platform:%s",
|
dev_name(&fimc->pdev->dev));
|
return 0;
|
}
|
|
static int fimc_lite_enum_fmt(struct file *file, void *priv,
|
struct v4l2_fmtdesc *f)
|
{
|
const struct fimc_fmt *fmt;
|
|
if (f->index >= ARRAY_SIZE(fimc_lite_formats))
|
return -EINVAL;
|
|
fmt = &fimc_lite_formats[f->index];
|
f->pixelformat = fmt->fourcc;
|
|
return 0;
|
}
|
|
static int fimc_lite_g_fmt_mplane(struct file *file, void *fh,
|
struct v4l2_format *f)
|
{
|
struct fimc_lite *fimc = video_drvdata(file);
|
struct v4l2_pix_format_mplane *pixm = &f->fmt.pix_mp;
|
struct v4l2_plane_pix_format *plane_fmt = &pixm->plane_fmt[0];
|
struct flite_frame *frame = &fimc->out_frame;
|
const struct fimc_fmt *fmt = frame->fmt;
|
|
plane_fmt->bytesperline = (frame->f_width * fmt->depth[0]) / 8;
|
plane_fmt->sizeimage = plane_fmt->bytesperline * frame->f_height;
|
|
pixm->num_planes = fmt->memplanes;
|
pixm->pixelformat = fmt->fourcc;
|
pixm->width = frame->f_width;
|
pixm->height = frame->f_height;
|
pixm->field = V4L2_FIELD_NONE;
|
pixm->colorspace = fmt->colorspace;
|
return 0;
|
}
|
|
static int fimc_lite_try_fmt(struct fimc_lite *fimc,
|
struct v4l2_pix_format_mplane *pixm,
|
const struct fimc_fmt **ffmt)
|
{
|
u32 bpl = pixm->plane_fmt[0].bytesperline;
|
struct flite_drvdata *dd = fimc->dd;
|
const struct fimc_fmt *inp_fmt = fimc->inp_frame.fmt;
|
const struct fimc_fmt *fmt;
|
|
if (WARN_ON(inp_fmt == NULL))
|
return -EINVAL;
|
/*
|
* We allow some flexibility only for YUV formats. In case of raw
|
* raw Bayer the FIMC-LITE's output format must match its camera
|
* interface input format.
|
*/
|
if (inp_fmt->flags & FMT_FLAGS_YUV)
|
fmt = fimc_lite_find_format(&pixm->pixelformat, NULL,
|
inp_fmt->flags, 0);
|
else
|
fmt = inp_fmt;
|
|
if (WARN_ON(fmt == NULL))
|
return -EINVAL;
|
if (ffmt)
|
*ffmt = fmt;
|
v4l_bound_align_image(&pixm->width, 8, dd->max_width,
|
ffs(dd->out_width_align) - 1,
|
&pixm->height, 0, dd->max_height, 0, 0);
|
|
if ((bpl == 0 || ((bpl * 8) / fmt->depth[0]) < pixm->width))
|
pixm->plane_fmt[0].bytesperline = (pixm->width *
|
fmt->depth[0]) / 8;
|
|
if (pixm->plane_fmt[0].sizeimage == 0)
|
pixm->plane_fmt[0].sizeimage = (pixm->width * pixm->height *
|
fmt->depth[0]) / 8;
|
pixm->num_planes = fmt->memplanes;
|
pixm->pixelformat = fmt->fourcc;
|
pixm->colorspace = fmt->colorspace;
|
pixm->field = V4L2_FIELD_NONE;
|
return 0;
|
}
|
|
static int fimc_lite_try_fmt_mplane(struct file *file, void *fh,
|
struct v4l2_format *f)
|
{
|
struct fimc_lite *fimc = video_drvdata(file);
|
return fimc_lite_try_fmt(fimc, &f->fmt.pix_mp, NULL);
|
}
|
|
static int fimc_lite_s_fmt_mplane(struct file *file, void *priv,
|
struct v4l2_format *f)
|
{
|
struct v4l2_pix_format_mplane *pixm = &f->fmt.pix_mp;
|
struct fimc_lite *fimc = video_drvdata(file);
|
struct flite_frame *frame = &fimc->out_frame;
|
const struct fimc_fmt *fmt = NULL;
|
int ret;
|
|
if (vb2_is_busy(&fimc->vb_queue))
|
return -EBUSY;
|
|
ret = fimc_lite_try_fmt(fimc, &f->fmt.pix_mp, &fmt);
|
if (ret < 0)
|
return ret;
|
|
frame->fmt = fmt;
|
fimc->payload[0] = max((pixm->width * pixm->height * fmt->depth[0]) / 8,
|
pixm->plane_fmt[0].sizeimage);
|
frame->f_width = pixm->width;
|
frame->f_height = pixm->height;
|
|
return 0;
|
}
|
|
static int fimc_pipeline_validate(struct fimc_lite *fimc)
|
{
|
struct v4l2_subdev *sd = &fimc->subdev;
|
struct v4l2_subdev_format sink_fmt, src_fmt;
|
struct media_pad *pad;
|
int ret;
|
|
while (1) {
|
/* Retrieve format at the sink pad */
|
pad = &sd->entity.pads[0];
|
if (!(pad->flags & MEDIA_PAD_FL_SINK))
|
break;
|
/* Don't call FIMC subdev operation to avoid nested locking */
|
if (sd == &fimc->subdev) {
|
struct flite_frame *ff = &fimc->out_frame;
|
sink_fmt.format.width = ff->f_width;
|
sink_fmt.format.height = ff->f_height;
|
sink_fmt.format.code = fimc->inp_frame.fmt->mbus_code;
|
} else {
|
sink_fmt.pad = pad->index;
|
sink_fmt.which = V4L2_SUBDEV_FORMAT_ACTIVE;
|
ret = v4l2_subdev_call(sd, pad, get_fmt, NULL,
|
&sink_fmt);
|
if (ret < 0 && ret != -ENOIOCTLCMD)
|
return -EPIPE;
|
}
|
/* Retrieve format at the source pad */
|
pad = media_entity_remote_pad(pad);
|
if (!pad || !is_media_entity_v4l2_subdev(pad->entity))
|
break;
|
|
sd = media_entity_to_v4l2_subdev(pad->entity);
|
src_fmt.pad = pad->index;
|
src_fmt.which = V4L2_SUBDEV_FORMAT_ACTIVE;
|
ret = v4l2_subdev_call(sd, pad, get_fmt, NULL, &src_fmt);
|
if (ret < 0 && ret != -ENOIOCTLCMD)
|
return -EPIPE;
|
|
if (src_fmt.format.width != sink_fmt.format.width ||
|
src_fmt.format.height != sink_fmt.format.height ||
|
src_fmt.format.code != sink_fmt.format.code)
|
return -EPIPE;
|
}
|
return 0;
|
}
|
|
static int fimc_lite_streamon(struct file *file, void *priv,
|
enum v4l2_buf_type type)
|
{
|
struct fimc_lite *fimc = video_drvdata(file);
|
struct media_entity *entity = &fimc->ve.vdev.entity;
|
int ret;
|
|
if (fimc_lite_active(fimc))
|
return -EBUSY;
|
|
ret = media_pipeline_start(entity, &fimc->ve.pipe->mp);
|
if (ret < 0)
|
return ret;
|
|
ret = fimc_pipeline_validate(fimc);
|
if (ret < 0)
|
goto err_p_stop;
|
|
fimc->sensor = fimc_find_remote_sensor(&fimc->subdev.entity);
|
|
ret = vb2_ioctl_streamon(file, priv, type);
|
if (!ret) {
|
fimc->streaming = true;
|
return ret;
|
}
|
|
err_p_stop:
|
media_pipeline_stop(entity);
|
return 0;
|
}
|
|
static int fimc_lite_streamoff(struct file *file, void *priv,
|
enum v4l2_buf_type type)
|
{
|
struct fimc_lite *fimc = video_drvdata(file);
|
int ret;
|
|
ret = vb2_ioctl_streamoff(file, priv, type);
|
if (ret < 0)
|
return ret;
|
|
media_pipeline_stop(&fimc->ve.vdev.entity);
|
fimc->streaming = false;
|
return 0;
|
}
|
|
static int fimc_lite_reqbufs(struct file *file, void *priv,
|
struct v4l2_requestbuffers *reqbufs)
|
{
|
struct fimc_lite *fimc = video_drvdata(file);
|
int ret;
|
|
reqbufs->count = max_t(u32, FLITE_REQ_BUFS_MIN, reqbufs->count);
|
ret = vb2_ioctl_reqbufs(file, priv, reqbufs);
|
if (!ret)
|
fimc->reqbufs_count = reqbufs->count;
|
|
return ret;
|
}
|
|
static int fimc_lite_g_selection(struct file *file, void *fh,
|
struct v4l2_selection *sel)
|
{
|
struct fimc_lite *fimc = video_drvdata(file);
|
struct flite_frame *f = &fimc->out_frame;
|
|
if (sel->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
|
return -EINVAL;
|
|
switch (sel->target) {
|
case V4L2_SEL_TGT_COMPOSE_BOUNDS:
|
case V4L2_SEL_TGT_COMPOSE_DEFAULT:
|
sel->r.left = 0;
|
sel->r.top = 0;
|
sel->r.width = f->f_width;
|
sel->r.height = f->f_height;
|
return 0;
|
|
case V4L2_SEL_TGT_COMPOSE:
|
sel->r = f->rect;
|
return 0;
|
}
|
|
return -EINVAL;
|
}
|
|
static int fimc_lite_s_selection(struct file *file, void *fh,
|
struct v4l2_selection *sel)
|
{
|
struct fimc_lite *fimc = video_drvdata(file);
|
struct flite_frame *f = &fimc->out_frame;
|
struct v4l2_rect rect = sel->r;
|
unsigned long flags;
|
|
if (sel->type != V4L2_BUF_TYPE_VIDEO_CAPTURE ||
|
sel->target != V4L2_SEL_TGT_COMPOSE)
|
return -EINVAL;
|
|
fimc_lite_try_compose(fimc, &rect);
|
|
if ((sel->flags & V4L2_SEL_FLAG_LE) &&
|
!v4l2_rect_enclosed(&rect, &sel->r))
|
return -ERANGE;
|
|
if ((sel->flags & V4L2_SEL_FLAG_GE) &&
|
!v4l2_rect_enclosed(&sel->r, &rect))
|
return -ERANGE;
|
|
sel->r = rect;
|
spin_lock_irqsave(&fimc->slock, flags);
|
f->rect = rect;
|
set_bit(ST_FLITE_CONFIG, &fimc->state);
|
spin_unlock_irqrestore(&fimc->slock, flags);
|
|
return 0;
|
}
|
|
static const struct v4l2_ioctl_ops fimc_lite_ioctl_ops = {
|
.vidioc_querycap = fimc_lite_querycap,
|
.vidioc_enum_fmt_vid_cap = fimc_lite_enum_fmt,
|
.vidioc_try_fmt_vid_cap_mplane = fimc_lite_try_fmt_mplane,
|
.vidioc_s_fmt_vid_cap_mplane = fimc_lite_s_fmt_mplane,
|
.vidioc_g_fmt_vid_cap_mplane = fimc_lite_g_fmt_mplane,
|
.vidioc_g_selection = fimc_lite_g_selection,
|
.vidioc_s_selection = fimc_lite_s_selection,
|
.vidioc_reqbufs = fimc_lite_reqbufs,
|
.vidioc_querybuf = vb2_ioctl_querybuf,
|
.vidioc_prepare_buf = vb2_ioctl_prepare_buf,
|
.vidioc_create_bufs = vb2_ioctl_create_bufs,
|
.vidioc_qbuf = vb2_ioctl_qbuf,
|
.vidioc_dqbuf = vb2_ioctl_dqbuf,
|
.vidioc_streamon = fimc_lite_streamon,
|
.vidioc_streamoff = fimc_lite_streamoff,
|
};
|
|
/* Capture subdev media entity operations */
|
static int fimc_lite_link_setup(struct media_entity *entity,
|
const struct media_pad *local,
|
const struct media_pad *remote, u32 flags)
|
{
|
struct v4l2_subdev *sd = media_entity_to_v4l2_subdev(entity);
|
struct fimc_lite *fimc = v4l2_get_subdevdata(sd);
|
int ret = 0;
|
|
if (WARN_ON(fimc == NULL))
|
return 0;
|
|
v4l2_dbg(1, debug, sd, "%s: %s --> %s, flags: 0x%x. source_id: 0x%x\n",
|
__func__, remote->entity->name, local->entity->name,
|
flags, fimc->source_subdev_grp_id);
|
|
switch (local->index) {
|
case FLITE_SD_PAD_SINK:
|
if (flags & MEDIA_LNK_FL_ENABLED) {
|
if (fimc->source_subdev_grp_id == 0)
|
fimc->source_subdev_grp_id = sd->grp_id;
|
else
|
ret = -EBUSY;
|
} else {
|
fimc->source_subdev_grp_id = 0;
|
fimc->sensor = NULL;
|
}
|
break;
|
|
case FLITE_SD_PAD_SOURCE_DMA:
|
if (!(flags & MEDIA_LNK_FL_ENABLED))
|
atomic_set(&fimc->out_path, FIMC_IO_NONE);
|
else
|
atomic_set(&fimc->out_path, FIMC_IO_DMA);
|
break;
|
|
case FLITE_SD_PAD_SOURCE_ISP:
|
if (!(flags & MEDIA_LNK_FL_ENABLED))
|
atomic_set(&fimc->out_path, FIMC_IO_NONE);
|
else
|
atomic_set(&fimc->out_path, FIMC_IO_ISP);
|
break;
|
|
default:
|
v4l2_err(sd, "Invalid pad index\n");
|
ret = -EINVAL;
|
}
|
mb();
|
|
return ret;
|
}
|
|
static const struct media_entity_operations fimc_lite_subdev_media_ops = {
|
.link_setup = fimc_lite_link_setup,
|
};
|
|
static int fimc_lite_subdev_enum_mbus_code(struct v4l2_subdev *sd,
|
struct v4l2_subdev_pad_config *cfg,
|
struct v4l2_subdev_mbus_code_enum *code)
|
{
|
const struct fimc_fmt *fmt;
|
|
fmt = fimc_lite_find_format(NULL, NULL, 0, code->index);
|
if (!fmt)
|
return -EINVAL;
|
code->code = fmt->mbus_code;
|
return 0;
|
}
|
|
static struct v4l2_mbus_framefmt *__fimc_lite_subdev_get_try_fmt(
|
struct v4l2_subdev *sd,
|
struct v4l2_subdev_pad_config *cfg, unsigned int pad)
|
{
|
if (pad != FLITE_SD_PAD_SINK)
|
pad = FLITE_SD_PAD_SOURCE_DMA;
|
|
return v4l2_subdev_get_try_format(sd, cfg, pad);
|
}
|
|
static int fimc_lite_subdev_get_fmt(struct v4l2_subdev *sd,
|
struct v4l2_subdev_pad_config *cfg,
|
struct v4l2_subdev_format *fmt)
|
{
|
struct fimc_lite *fimc = v4l2_get_subdevdata(sd);
|
struct v4l2_mbus_framefmt *mf = &fmt->format;
|
struct flite_frame *f = &fimc->inp_frame;
|
|
if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) {
|
mf = __fimc_lite_subdev_get_try_fmt(sd, cfg, fmt->pad);
|
fmt->format = *mf;
|
return 0;
|
}
|
|
mutex_lock(&fimc->lock);
|
mf->colorspace = f->fmt->colorspace;
|
mf->code = f->fmt->mbus_code;
|
|
if (fmt->pad == FLITE_SD_PAD_SINK) {
|
/* full camera input frame size */
|
mf->width = f->f_width;
|
mf->height = f->f_height;
|
} else {
|
/* crop size */
|
mf->width = f->rect.width;
|
mf->height = f->rect.height;
|
}
|
mutex_unlock(&fimc->lock);
|
return 0;
|
}
|
|
static int fimc_lite_subdev_set_fmt(struct v4l2_subdev *sd,
|
struct v4l2_subdev_pad_config *cfg,
|
struct v4l2_subdev_format *fmt)
|
{
|
struct fimc_lite *fimc = v4l2_get_subdevdata(sd);
|
struct v4l2_mbus_framefmt *mf = &fmt->format;
|
struct flite_frame *sink = &fimc->inp_frame;
|
struct flite_frame *source = &fimc->out_frame;
|
const struct fimc_fmt *ffmt;
|
|
v4l2_dbg(1, debug, sd, "pad%d: code: 0x%x, %dx%d\n",
|
fmt->pad, mf->code, mf->width, mf->height);
|
|
mutex_lock(&fimc->lock);
|
|
if ((atomic_read(&fimc->out_path) == FIMC_IO_ISP &&
|
sd->entity.stream_count > 0) ||
|
(atomic_read(&fimc->out_path) == FIMC_IO_DMA &&
|
vb2_is_busy(&fimc->vb_queue))) {
|
mutex_unlock(&fimc->lock);
|
return -EBUSY;
|
}
|
|
ffmt = fimc_lite_subdev_try_fmt(fimc, cfg, fmt);
|
|
if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) {
|
struct v4l2_mbus_framefmt *src_fmt;
|
|
mf = __fimc_lite_subdev_get_try_fmt(sd, cfg, fmt->pad);
|
*mf = fmt->format;
|
|
if (fmt->pad == FLITE_SD_PAD_SINK) {
|
unsigned int pad = FLITE_SD_PAD_SOURCE_DMA;
|
src_fmt = __fimc_lite_subdev_get_try_fmt(sd, cfg, pad);
|
*src_fmt = *mf;
|
}
|
|
mutex_unlock(&fimc->lock);
|
return 0;
|
}
|
|
if (fmt->pad == FLITE_SD_PAD_SINK) {
|
sink->f_width = mf->width;
|
sink->f_height = mf->height;
|
sink->fmt = ffmt;
|
/* Set sink crop rectangle */
|
sink->rect.width = mf->width;
|
sink->rect.height = mf->height;
|
sink->rect.left = 0;
|
sink->rect.top = 0;
|
/* Reset source format and crop rectangle */
|
source->rect = sink->rect;
|
source->f_width = mf->width;
|
source->f_height = mf->height;
|
}
|
|
mutex_unlock(&fimc->lock);
|
return 0;
|
}
|
|
static int fimc_lite_subdev_get_selection(struct v4l2_subdev *sd,
|
struct v4l2_subdev_pad_config *cfg,
|
struct v4l2_subdev_selection *sel)
|
{
|
struct fimc_lite *fimc = v4l2_get_subdevdata(sd);
|
struct flite_frame *f = &fimc->inp_frame;
|
|
if ((sel->target != V4L2_SEL_TGT_CROP &&
|
sel->target != V4L2_SEL_TGT_CROP_BOUNDS) ||
|
sel->pad != FLITE_SD_PAD_SINK)
|
return -EINVAL;
|
|
if (sel->which == V4L2_SUBDEV_FORMAT_TRY) {
|
sel->r = *v4l2_subdev_get_try_crop(sd, cfg, sel->pad);
|
return 0;
|
}
|
|
mutex_lock(&fimc->lock);
|
if (sel->target == V4L2_SEL_TGT_CROP) {
|
sel->r = f->rect;
|
} else {
|
sel->r.left = 0;
|
sel->r.top = 0;
|
sel->r.width = f->f_width;
|
sel->r.height = f->f_height;
|
}
|
mutex_unlock(&fimc->lock);
|
|
v4l2_dbg(1, debug, sd, "%s: (%d,%d) %dx%d, f_w: %d, f_h: %d\n",
|
__func__, f->rect.left, f->rect.top, f->rect.width,
|
f->rect.height, f->f_width, f->f_height);
|
|
return 0;
|
}
|
|
static int fimc_lite_subdev_set_selection(struct v4l2_subdev *sd,
|
struct v4l2_subdev_pad_config *cfg,
|
struct v4l2_subdev_selection *sel)
|
{
|
struct fimc_lite *fimc = v4l2_get_subdevdata(sd);
|
struct flite_frame *f = &fimc->inp_frame;
|
int ret = 0;
|
|
if (sel->target != V4L2_SEL_TGT_CROP || sel->pad != FLITE_SD_PAD_SINK)
|
return -EINVAL;
|
|
mutex_lock(&fimc->lock);
|
fimc_lite_try_crop(fimc, &sel->r);
|
|
if (sel->which == V4L2_SUBDEV_FORMAT_TRY) {
|
*v4l2_subdev_get_try_crop(sd, cfg, sel->pad) = sel->r;
|
} else {
|
unsigned long flags;
|
spin_lock_irqsave(&fimc->slock, flags);
|
f->rect = sel->r;
|
/* Same crop rectangle on the source pad */
|
fimc->out_frame.rect = sel->r;
|
set_bit(ST_FLITE_CONFIG, &fimc->state);
|
spin_unlock_irqrestore(&fimc->slock, flags);
|
}
|
mutex_unlock(&fimc->lock);
|
|
v4l2_dbg(1, debug, sd, "%s: (%d,%d) %dx%d, f_w: %d, f_h: %d\n",
|
__func__, f->rect.left, f->rect.top, f->rect.width,
|
f->rect.height, f->f_width, f->f_height);
|
|
return ret;
|
}
|
|
static int fimc_lite_subdev_s_stream(struct v4l2_subdev *sd, int on)
|
{
|
struct fimc_lite *fimc = v4l2_get_subdevdata(sd);
|
unsigned long flags;
|
int ret;
|
|
/*
|
* Find sensor subdev linked to FIMC-LITE directly or through
|
* MIPI-CSIS. This is required for configuration where FIMC-LITE
|
* is used as a subdev only and feeds data internally to FIMC-IS.
|
* The pipeline links are protected through entity.stream_count
|
* so there is no need to take the media graph mutex here.
|
*/
|
fimc->sensor = fimc_find_remote_sensor(&sd->entity);
|
|
if (atomic_read(&fimc->out_path) != FIMC_IO_ISP)
|
return -ENOIOCTLCMD;
|
|
mutex_lock(&fimc->lock);
|
if (on) {
|
flite_hw_reset(fimc);
|
ret = fimc_lite_hw_init(fimc, true);
|
if (!ret) {
|
spin_lock_irqsave(&fimc->slock, flags);
|
flite_hw_capture_start(fimc);
|
spin_unlock_irqrestore(&fimc->slock, flags);
|
}
|
} else {
|
set_bit(ST_FLITE_OFF, &fimc->state);
|
|
spin_lock_irqsave(&fimc->slock, flags);
|
flite_hw_capture_stop(fimc);
|
spin_unlock_irqrestore(&fimc->slock, flags);
|
|
ret = wait_event_timeout(fimc->irq_queue,
|
!test_bit(ST_FLITE_OFF, &fimc->state),
|
msecs_to_jiffies(200));
|
if (ret == 0)
|
v4l2_err(sd, "s_stream(0) timeout\n");
|
clear_bit(ST_FLITE_RUN, &fimc->state);
|
}
|
|
mutex_unlock(&fimc->lock);
|
return ret;
|
}
|
|
static int fimc_lite_log_status(struct v4l2_subdev *sd)
|
{
|
struct fimc_lite *fimc = v4l2_get_subdevdata(sd);
|
|
flite_hw_dump_regs(fimc, __func__);
|
return 0;
|
}
|
|
static int fimc_lite_subdev_registered(struct v4l2_subdev *sd)
|
{
|
struct fimc_lite *fimc = v4l2_get_subdevdata(sd);
|
struct vb2_queue *q = &fimc->vb_queue;
|
struct video_device *vfd = &fimc->ve.vdev;
|
int ret;
|
|
memset(vfd, 0, sizeof(*vfd));
|
atomic_set(&fimc->out_path, FIMC_IO_DMA);
|
|
snprintf(vfd->name, sizeof(vfd->name), "fimc-lite.%d.capture",
|
fimc->index);
|
|
vfd->fops = &fimc_lite_fops;
|
vfd->ioctl_ops = &fimc_lite_ioctl_ops;
|
vfd->v4l2_dev = sd->v4l2_dev;
|
vfd->minor = -1;
|
vfd->release = video_device_release_empty;
|
vfd->queue = q;
|
vfd->device_caps = V4L2_CAP_VIDEO_CAPTURE_MPLANE | V4L2_CAP_STREAMING;
|
fimc->reqbufs_count = 0;
|
|
INIT_LIST_HEAD(&fimc->pending_buf_q);
|
INIT_LIST_HEAD(&fimc->active_buf_q);
|
|
memset(q, 0, sizeof(*q));
|
q->type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE;
|
q->io_modes = VB2_MMAP | VB2_USERPTR;
|
q->ops = &fimc_lite_qops;
|
q->mem_ops = &vb2_dma_contig_memops;
|
q->buf_struct_size = sizeof(struct flite_buffer);
|
q->drv_priv = fimc;
|
q->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC;
|
q->lock = &fimc->lock;
|
q->dev = &fimc->pdev->dev;
|
|
ret = vb2_queue_init(q);
|
if (ret < 0)
|
return ret;
|
|
fimc->vd_pad.flags = MEDIA_PAD_FL_SINK;
|
ret = media_entity_pads_init(&vfd->entity, 1, &fimc->vd_pad);
|
if (ret < 0)
|
return ret;
|
|
video_set_drvdata(vfd, fimc);
|
fimc->ve.pipe = v4l2_get_subdev_hostdata(sd);
|
|
ret = video_register_device(vfd, VFL_TYPE_VIDEO, -1);
|
if (ret < 0) {
|
media_entity_cleanup(&vfd->entity);
|
fimc->ve.pipe = NULL;
|
return ret;
|
}
|
|
v4l2_info(sd->v4l2_dev, "Registered %s as /dev/%s\n",
|
vfd->name, video_device_node_name(vfd));
|
return 0;
|
}
|
|
static void fimc_lite_subdev_unregistered(struct v4l2_subdev *sd)
|
{
|
struct fimc_lite *fimc = v4l2_get_subdevdata(sd);
|
|
if (fimc == NULL)
|
return;
|
|
mutex_lock(&fimc->lock);
|
|
if (video_is_registered(&fimc->ve.vdev)) {
|
video_unregister_device(&fimc->ve.vdev);
|
media_entity_cleanup(&fimc->ve.vdev.entity);
|
fimc->ve.pipe = NULL;
|
}
|
|
mutex_unlock(&fimc->lock);
|
}
|
|
static const struct v4l2_subdev_internal_ops fimc_lite_subdev_internal_ops = {
|
.registered = fimc_lite_subdev_registered,
|
.unregistered = fimc_lite_subdev_unregistered,
|
};
|
|
static const struct v4l2_subdev_pad_ops fimc_lite_subdev_pad_ops = {
|
.enum_mbus_code = fimc_lite_subdev_enum_mbus_code,
|
.get_selection = fimc_lite_subdev_get_selection,
|
.set_selection = fimc_lite_subdev_set_selection,
|
.get_fmt = fimc_lite_subdev_get_fmt,
|
.set_fmt = fimc_lite_subdev_set_fmt,
|
};
|
|
static const struct v4l2_subdev_video_ops fimc_lite_subdev_video_ops = {
|
.s_stream = fimc_lite_subdev_s_stream,
|
};
|
|
static const struct v4l2_subdev_core_ops fimc_lite_core_ops = {
|
.log_status = fimc_lite_log_status,
|
};
|
|
static const struct v4l2_subdev_ops fimc_lite_subdev_ops = {
|
.core = &fimc_lite_core_ops,
|
.video = &fimc_lite_subdev_video_ops,
|
.pad = &fimc_lite_subdev_pad_ops,
|
};
|
|
static int fimc_lite_s_ctrl(struct v4l2_ctrl *ctrl)
|
{
|
struct fimc_lite *fimc = container_of(ctrl->handler, struct fimc_lite,
|
ctrl_handler);
|
set_bit(ST_FLITE_CONFIG, &fimc->state);
|
return 0;
|
}
|
|
static const struct v4l2_ctrl_ops fimc_lite_ctrl_ops = {
|
.s_ctrl = fimc_lite_s_ctrl,
|
};
|
|
static const struct v4l2_ctrl_config fimc_lite_ctrl = {
|
.ops = &fimc_lite_ctrl_ops,
|
.id = V4L2_CTRL_CLASS_USER | 0x1001,
|
.type = V4L2_CTRL_TYPE_BOOLEAN,
|
.name = "Test Pattern 640x480",
|
.step = 1,
|
};
|
|
static void fimc_lite_set_default_config(struct fimc_lite *fimc)
|
{
|
struct flite_frame *sink = &fimc->inp_frame;
|
struct flite_frame *source = &fimc->out_frame;
|
|
sink->fmt = &fimc_lite_formats[0];
|
sink->f_width = FLITE_DEFAULT_WIDTH;
|
sink->f_height = FLITE_DEFAULT_HEIGHT;
|
|
sink->rect.width = FLITE_DEFAULT_WIDTH;
|
sink->rect.height = FLITE_DEFAULT_HEIGHT;
|
sink->rect.left = 0;
|
sink->rect.top = 0;
|
|
*source = *sink;
|
}
|
|
static int fimc_lite_create_capture_subdev(struct fimc_lite *fimc)
|
{
|
struct v4l2_ctrl_handler *handler = &fimc->ctrl_handler;
|
struct v4l2_subdev *sd = &fimc->subdev;
|
int ret;
|
|
v4l2_subdev_init(sd, &fimc_lite_subdev_ops);
|
sd->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
|
snprintf(sd->name, sizeof(sd->name), "FIMC-LITE.%d", fimc->index);
|
|
fimc->subdev_pads[FLITE_SD_PAD_SINK].flags = MEDIA_PAD_FL_SINK;
|
fimc->subdev_pads[FLITE_SD_PAD_SOURCE_DMA].flags = MEDIA_PAD_FL_SOURCE;
|
fimc->subdev_pads[FLITE_SD_PAD_SOURCE_ISP].flags = MEDIA_PAD_FL_SOURCE;
|
ret = media_entity_pads_init(&sd->entity, FLITE_SD_PADS_NUM,
|
fimc->subdev_pads);
|
if (ret)
|
return ret;
|
|
v4l2_ctrl_handler_init(handler, 1);
|
fimc->test_pattern = v4l2_ctrl_new_custom(handler, &fimc_lite_ctrl,
|
NULL);
|
if (handler->error) {
|
media_entity_cleanup(&sd->entity);
|
return handler->error;
|
}
|
|
sd->ctrl_handler = handler;
|
sd->internal_ops = &fimc_lite_subdev_internal_ops;
|
sd->entity.function = MEDIA_ENT_F_PROC_VIDEO_SCALER;
|
sd->entity.ops = &fimc_lite_subdev_media_ops;
|
sd->owner = THIS_MODULE;
|
v4l2_set_subdevdata(sd, fimc);
|
|
return 0;
|
}
|
|
static void fimc_lite_unregister_capture_subdev(struct fimc_lite *fimc)
|
{
|
struct v4l2_subdev *sd = &fimc->subdev;
|
|
v4l2_device_unregister_subdev(sd);
|
media_entity_cleanup(&sd->entity);
|
v4l2_ctrl_handler_free(&fimc->ctrl_handler);
|
v4l2_set_subdevdata(sd, NULL);
|
}
|
|
static void fimc_lite_clk_put(struct fimc_lite *fimc)
|
{
|
if (IS_ERR(fimc->clock))
|
return;
|
|
clk_put(fimc->clock);
|
fimc->clock = ERR_PTR(-EINVAL);
|
}
|
|
static int fimc_lite_clk_get(struct fimc_lite *fimc)
|
{
|
fimc->clock = clk_get(&fimc->pdev->dev, FLITE_CLK_NAME);
|
return PTR_ERR_OR_ZERO(fimc->clock);
|
}
|
|
static const struct of_device_id flite_of_match[];
|
|
static int fimc_lite_probe(struct platform_device *pdev)
|
{
|
struct flite_drvdata *drv_data = NULL;
|
struct device *dev = &pdev->dev;
|
const struct of_device_id *of_id;
|
struct fimc_lite *fimc;
|
struct resource *res;
|
int ret;
|
|
if (!dev->of_node)
|
return -ENODEV;
|
|
fimc = devm_kzalloc(dev, sizeof(*fimc), GFP_KERNEL);
|
if (!fimc)
|
return -ENOMEM;
|
|
of_id = of_match_node(flite_of_match, dev->of_node);
|
if (of_id)
|
drv_data = (struct flite_drvdata *)of_id->data;
|
fimc->index = of_alias_get_id(dev->of_node, "fimc-lite");
|
|
if (!drv_data || fimc->index >= drv_data->num_instances ||
|
fimc->index < 0) {
|
dev_err(dev, "Wrong %pOF node alias\n", dev->of_node);
|
return -EINVAL;
|
}
|
|
fimc->dd = drv_data;
|
fimc->pdev = pdev;
|
|
init_waitqueue_head(&fimc->irq_queue);
|
spin_lock_init(&fimc->slock);
|
mutex_init(&fimc->lock);
|
|
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
|
fimc->regs = devm_ioremap_resource(dev, res);
|
if (IS_ERR(fimc->regs))
|
return PTR_ERR(fimc->regs);
|
|
res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
|
if (res == NULL) {
|
dev_err(dev, "Failed to get IRQ resource\n");
|
return -ENXIO;
|
}
|
|
ret = fimc_lite_clk_get(fimc);
|
if (ret)
|
return ret;
|
|
ret = devm_request_irq(dev, res->start, flite_irq_handler,
|
0, dev_name(dev), fimc);
|
if (ret) {
|
dev_err(dev, "Failed to install irq (%d)\n", ret);
|
goto err_clk_put;
|
}
|
|
/* The video node will be created within the subdev's registered() op */
|
ret = fimc_lite_create_capture_subdev(fimc);
|
if (ret)
|
goto err_clk_put;
|
|
platform_set_drvdata(pdev, fimc);
|
pm_runtime_enable(dev);
|
|
if (!pm_runtime_enabled(dev)) {
|
ret = clk_prepare_enable(fimc->clock);
|
if (ret < 0)
|
goto err_sd;
|
}
|
|
vb2_dma_contig_set_max_seg_size(dev, DMA_BIT_MASK(32));
|
|
fimc_lite_set_default_config(fimc);
|
|
dev_dbg(dev, "FIMC-LITE.%d registered successfully\n",
|
fimc->index);
|
return 0;
|
|
err_sd:
|
fimc_lite_unregister_capture_subdev(fimc);
|
err_clk_put:
|
fimc_lite_clk_put(fimc);
|
return ret;
|
}
|
|
#ifdef CONFIG_PM
|
static int fimc_lite_runtime_resume(struct device *dev)
|
{
|
struct fimc_lite *fimc = dev_get_drvdata(dev);
|
|
clk_prepare_enable(fimc->clock);
|
return 0;
|
}
|
|
static int fimc_lite_runtime_suspend(struct device *dev)
|
{
|
struct fimc_lite *fimc = dev_get_drvdata(dev);
|
|
clk_disable_unprepare(fimc->clock);
|
return 0;
|
}
|
#endif
|
|
#ifdef CONFIG_PM_SLEEP
|
static int fimc_lite_resume(struct device *dev)
|
{
|
struct fimc_lite *fimc = dev_get_drvdata(dev);
|
struct flite_buffer *buf;
|
unsigned long flags;
|
int i;
|
|
spin_lock_irqsave(&fimc->slock, flags);
|
if (!test_and_clear_bit(ST_LPM, &fimc->state) ||
|
!test_bit(ST_FLITE_IN_USE, &fimc->state)) {
|
spin_unlock_irqrestore(&fimc->slock, flags);
|
return 0;
|
}
|
flite_hw_reset(fimc);
|
spin_unlock_irqrestore(&fimc->slock, flags);
|
|
if (!test_and_clear_bit(ST_FLITE_SUSPENDED, &fimc->state))
|
return 0;
|
|
INIT_LIST_HEAD(&fimc->active_buf_q);
|
fimc_pipeline_call(&fimc->ve, open,
|
&fimc->ve.vdev.entity, false);
|
fimc_lite_hw_init(fimc, atomic_read(&fimc->out_path) == FIMC_IO_ISP);
|
clear_bit(ST_FLITE_SUSPENDED, &fimc->state);
|
|
for (i = 0; i < fimc->reqbufs_count; i++) {
|
if (list_empty(&fimc->pending_buf_q))
|
break;
|
buf = fimc_lite_pending_queue_pop(fimc);
|
buffer_queue(&buf->vb.vb2_buf);
|
}
|
return 0;
|
}
|
|
static int fimc_lite_suspend(struct device *dev)
|
{
|
struct fimc_lite *fimc = dev_get_drvdata(dev);
|
bool suspend = test_bit(ST_FLITE_IN_USE, &fimc->state);
|
int ret;
|
|
if (test_and_set_bit(ST_LPM, &fimc->state))
|
return 0;
|
|
ret = fimc_lite_stop_capture(fimc, suspend);
|
if (ret < 0 || !fimc_lite_active(fimc))
|
return ret;
|
|
return fimc_pipeline_call(&fimc->ve, close);
|
}
|
#endif /* CONFIG_PM_SLEEP */
|
|
static int fimc_lite_remove(struct platform_device *pdev)
|
{
|
struct fimc_lite *fimc = platform_get_drvdata(pdev);
|
struct device *dev = &pdev->dev;
|
|
if (!pm_runtime_enabled(dev))
|
clk_disable_unprepare(fimc->clock);
|
|
pm_runtime_disable(dev);
|
pm_runtime_set_suspended(dev);
|
fimc_lite_unregister_capture_subdev(fimc);
|
vb2_dma_contig_clear_max_seg_size(dev);
|
fimc_lite_clk_put(fimc);
|
|
dev_info(dev, "Driver unloaded\n");
|
return 0;
|
}
|
|
static const struct dev_pm_ops fimc_lite_pm_ops = {
|
SET_SYSTEM_SLEEP_PM_OPS(fimc_lite_suspend, fimc_lite_resume)
|
SET_RUNTIME_PM_OPS(fimc_lite_runtime_suspend, fimc_lite_runtime_resume,
|
NULL)
|
};
|
|
/* EXYNOS4412 */
|
static struct flite_drvdata fimc_lite_drvdata_exynos4 = {
|
.max_width = 8192,
|
.max_height = 8192,
|
.out_width_align = 8,
|
.win_hor_offs_align = 2,
|
.out_hor_offs_align = 8,
|
.max_dma_bufs = 1,
|
.num_instances = 2,
|
};
|
|
/* EXYNOS5250 */
|
static struct flite_drvdata fimc_lite_drvdata_exynos5 = {
|
.max_width = 8192,
|
.max_height = 8192,
|
.out_width_align = 8,
|
.win_hor_offs_align = 2,
|
.out_hor_offs_align = 8,
|
.max_dma_bufs = 32,
|
.num_instances = 3,
|
};
|
|
static const struct of_device_id flite_of_match[] = {
|
{
|
.compatible = "samsung,exynos4212-fimc-lite",
|
.data = &fimc_lite_drvdata_exynos4,
|
},
|
{
|
.compatible = "samsung,exynos5250-fimc-lite",
|
.data = &fimc_lite_drvdata_exynos5,
|
},
|
{ /* sentinel */ },
|
};
|
MODULE_DEVICE_TABLE(of, flite_of_match);
|
|
static struct platform_driver fimc_lite_driver = {
|
.probe = fimc_lite_probe,
|
.remove = fimc_lite_remove,
|
.driver = {
|
.of_match_table = flite_of_match,
|
.name = FIMC_LITE_DRV_NAME,
|
.pm = &fimc_lite_pm_ops,
|
}
|
};
|
module_platform_driver(fimc_lite_driver);
|
MODULE_LICENSE("GPL");
|
MODULE_ALIAS("platform:" FIMC_LITE_DRV_NAME);
|
