| /* |
| * Samsung EXYNOS FIMC-LITE (camera host interface) driver |
| * |
| * Copyright (C) 2012 Samsung Electronics Co., Ltd. |
| * Sylwester Nawrocki <s.nawrocki@samsung.com> |
| * |
| * 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. |
| */ |
| #define pr_fmt(fmt) "%s:%d " fmt, __func__, __LINE__ |
| |
| #include <linux/bug.h> |
| #include <linux/device.h> |
| #include <linux/errno.h> |
| #include <linux/interrupt.h> |
| #include <linux/kernel.h> |
| #include <linux/list.h> |
| #include <linux/module.h> |
| #include <linux/types.h> |
| #include <linux/platform_device.h> |
| #include <linux/pm_runtime.h> |
| #include <linux/slab.h> |
| #include <linux/videodev2.h> |
| |
| #include <media/v4l2-device.h> |
| #include <media/v4l2-ioctl.h> |
| #include <media/v4l2-mem2mem.h> |
| #include <media/videobuf2-core.h> |
| #include <media/videobuf2-dma-contig.h> |
| #include <media/s5p_fimc.h> |
| |
| #include "fimc-mdevice.h" |
| #include "fimc-core.h" |
| #include "fimc-lite.h" |
| #include "fimc-lite-reg.h" |
| |
| static int debug; |
| module_param(debug, int, 0644); |
| |
| static const struct fimc_fmt fimc_lite_formats[] = { |
| { |
| .name = "YUV 4:2:2 packed, YCbYCr", |
| .fourcc = V4L2_PIX_FMT_YUYV, |
| .depth = { 16 }, |
| .color = FIMC_FMT_YCBYCR422, |
| .memplanes = 1, |
| .mbus_code = V4L2_MBUS_FMT_YUYV8_2X8, |
| }, { |
| .name = "YUV 4:2:2 packed, CbYCrY", |
| .fourcc = V4L2_PIX_FMT_UYVY, |
| .depth = { 16 }, |
| .color = FIMC_FMT_CBYCRY422, |
| .memplanes = 1, |
| .mbus_code = V4L2_MBUS_FMT_UYVY8_2X8, |
| }, { |
| .name = "YUV 4:2:2 packed, CrYCbY", |
| .fourcc = V4L2_PIX_FMT_VYUY, |
| .depth = { 16 }, |
| .color = FIMC_FMT_CRYCBY422, |
| .memplanes = 1, |
| .mbus_code = V4L2_MBUS_FMT_VYUY8_2X8, |
| }, { |
| .name = "YUV 4:2:2 packed, YCrYCb", |
| .fourcc = V4L2_PIX_FMT_YVYU, |
| .depth = { 16 }, |
| .color = FIMC_FMT_YCRYCB422, |
| .memplanes = 1, |
| .mbus_code = V4L2_MBUS_FMT_YVYU8_2X8, |
| }, { |
| .name = "RAW8 (GRBG)", |
| .fourcc = V4L2_PIX_FMT_SGRBG8, |
| .depth = { 8 }, |
| .color = FIMC_FMT_RAW8, |
| .memplanes = 1, |
| .mbus_code = V4L2_MBUS_FMT_SGRBG8_1X8, |
| }, { |
| .name = "RAW10 (GRBG)", |
| .fourcc = V4L2_PIX_FMT_SGRBG10, |
| .depth = { 10 }, |
| .color = FIMC_FMT_RAW10, |
| .memplanes = 1, |
| .mbus_code = V4L2_MBUS_FMT_SGRBG10_1X10, |
| }, { |
| .name = "RAW12 (GRBG)", |
| .fourcc = V4L2_PIX_FMT_SGRBG12, |
| .depth = { 12 }, |
| .color = FIMC_FMT_RAW12, |
| .memplanes = 1, |
| .mbus_code = V4L2_MBUS_FMT_SGRBG12_1X12, |
| }, |
| }; |
| |
| /** |
| * fimc_lite_find_format - lookup fimc color format by fourcc or media bus code |
| * @pixelformat: fourcc to match, ignored if null |
| * @mbus_code: media bus code to match, ignored if null |
| * @index: index to the fimc_lite_formats array, ignored if negative |
| */ |
| static const struct fimc_fmt *fimc_lite_find_format(const u32 *pixelformat, |
| const u32 *mbus_code, int index) |
| { |
| const struct fimc_fmt *fmt, *def_fmt = NULL; |
| unsigned int i; |
| int id = 0; |
| |
| if (index >= (int)ARRAY_SIZE(fimc_lite_formats)) |
| return NULL; |
| |
| for (i = 0; i < ARRAY_SIZE(fimc_lite_formats); ++i) { |
| fmt = &fimc_lite_formats[i]; |
| if (pixelformat && fmt->fourcc == *pixelformat) |
| return fmt; |
| if (mbus_code && fmt->mbus_code == *mbus_code) |
| return fmt; |
| if (index == id) |
| def_fmt = fmt; |
| id++; |
| } |
| return def_fmt; |
| } |
| |
| static int fimc_lite_hw_init(struct fimc_lite *fimc, bool isp_output) |
| { |
| struct fimc_pipeline *pipeline = &fimc->pipeline; |
| struct v4l2_subdev *sensor; |
| struct fimc_sensor_info *si; |
| unsigned long flags; |
| |
| sensor = isp_output ? fimc->sensor : pipeline->subdevs[IDX_SENSOR]; |
| |
| if (sensor == NULL) |
| return -ENXIO; |
| |
| if (fimc->fmt == NULL) |
| return -EINVAL; |
| |
| /* Get sensor configuration data from the sensor subdev */ |
| si = v4l2_get_subdev_hostdata(sensor); |
| spin_lock_irqsave(&fimc->slock, flags); |
| |
| flite_hw_set_camera_bus(fimc, &si->pdata); |
| flite_hw_set_source_format(fimc, &fimc->inp_frame); |
| flite_hw_set_window_offset(fimc, &fimc->inp_frame); |
| flite_hw_set_output_dma(fimc, &fimc->out_frame, !isp_output); |
| flite_hw_set_interrupt_mask(fimc); |
| flite_hw_set_test_pattern(fimc, fimc->test_pattern->val); |
| |
| if (debug > 0) |
| flite_hw_dump_regs(fimc, __func__); |
| |
| spin_unlock_irqrestore(&fimc->slock, flags); |
| return 0; |
| } |
| |
| /* |
| * Reinitialize the driver so it is ready to start the streaming again. |
| * Set fimc->state to indicate stream off and the hardware shut down state. |
| * If not suspending (@suspend is false), return any buffers to videobuf2. |
| * Otherwise put any owned buffers onto the pending buffers queue, so they |
| * can be re-spun when the device is being resumed. Also perform FIMC |
| * software reset and disable streaming on the whole pipeline if required. |
| */ |
| static int fimc_lite_reinit(struct fimc_lite *fimc, bool suspend) |
| { |
| struct flite_buffer *buf; |
| unsigned long flags; |
| bool streaming; |
| |
| spin_lock_irqsave(&fimc->slock, flags); |
| streaming = fimc->state & (1 << ST_SENSOR_STREAM); |
| |
| fimc->state &= ~(1 << ST_FLITE_RUN | 1 << ST_FLITE_OFF | |
| 1 << ST_FLITE_STREAM | 1 << ST_SENSOR_STREAM); |
| if (suspend) |
| fimc->state |= (1 << ST_FLITE_SUSPENDED); |
| else |
| fimc->state &= ~(1 << ST_FLITE_PENDING | |
| 1 << ST_FLITE_SUSPENDED); |
| |
| /* Release unused buffers */ |
| while (!suspend && !list_empty(&fimc->pending_buf_q)) { |
| buf = fimc_lite_pending_queue_pop(fimc); |
| vb2_buffer_done(&buf->vb, VB2_BUF_STATE_ERROR); |
| } |
| /* If suspending put unused buffers onto pending queue */ |
| while (!list_empty(&fimc->active_buf_q)) { |
| buf = fimc_lite_active_queue_pop(fimc); |
| if (suspend) |
| fimc_lite_pending_queue_add(fimc, buf); |
| else |
| vb2_buffer_done(&buf->vb, VB2_BUF_STATE_ERROR); |
| } |
| |
| spin_unlock_irqrestore(&fimc->slock, flags); |
| |
| flite_hw_reset(fimc); |
| |
| if (!streaming) |
| return 0; |
| |
| return fimc_pipeline_call(fimc, set_stream, &fimc->pipeline, 0); |
| } |
| |
| static int fimc_lite_stop_capture(struct fimc_lite *fimc, bool suspend) |
| { |
| unsigned long flags; |
| |
| if (!fimc_lite_active(fimc)) |
| return 0; |
| |
| spin_lock_irqsave(&fimc->slock, flags); |
| set_bit(ST_FLITE_OFF, &fimc->state); |
| flite_hw_capture_stop(fimc); |
| spin_unlock_irqrestore(&fimc->slock, flags); |
| |
| wait_event_timeout(fimc->irq_queue, |
| !test_bit(ST_FLITE_OFF, &fimc->state), |
| (2*HZ/10)); /* 200 ms */ |
| |
| return fimc_lite_reinit(fimc, suspend); |
| } |
| |
| /* Must be called with fimc.slock spinlock held. */ |
| static void fimc_lite_config_update(struct fimc_lite *fimc) |
| { |
| flite_hw_set_window_offset(fimc, &fimc->inp_frame); |
| flite_hw_set_dma_window(fimc, &fimc->out_frame); |
| flite_hw_set_test_pattern(fimc, fimc->test_pattern->val); |
| clear_bit(ST_FLITE_CONFIG, &fimc->state); |
| } |
| |
| static irqreturn_t flite_irq_handler(int irq, void *priv) |
| { |
| struct fimc_lite *fimc = priv; |
| struct flite_buffer *vbuf; |
| unsigned long flags; |
| struct timeval *tv; |
| struct timespec ts; |
| u32 intsrc; |
| |
| spin_lock_irqsave(&fimc->slock, flags); |
| |
| intsrc = flite_hw_get_interrupt_source(fimc); |
| flite_hw_clear_pending_irq(fimc); |
| |
| if (test_and_clear_bit(ST_FLITE_OFF, &fimc->state)) { |
| wake_up(&fimc->irq_queue); |
| goto done; |
| } |
| |
| if (intsrc & FLITE_REG_CISTATUS_IRQ_SRC_OVERFLOW) { |
| clear_bit(ST_FLITE_RUN, &fimc->state); |
| fimc->events.data_overflow++; |
| } |
| |
| if (intsrc & FLITE_REG_CISTATUS_IRQ_SRC_LASTCAPEND) { |
| flite_hw_clear_last_capture_end(fimc); |
| clear_bit(ST_FLITE_STREAM, &fimc->state); |
| wake_up(&fimc->irq_queue); |
| } |
| |
| if (atomic_read(&fimc->out_path) != FIMC_IO_DMA) |
| goto done; |
| |
| if ((intsrc & FLITE_REG_CISTATUS_IRQ_SRC_FRMSTART) && |
| test_bit(ST_FLITE_RUN, &fimc->state) && |
| !list_empty(&fimc->active_buf_q) && |
| !list_empty(&fimc->pending_buf_q)) { |
| vbuf = fimc_lite_active_queue_pop(fimc); |
| ktime_get_ts(&ts); |
| tv = &vbuf->vb.v4l2_buf.timestamp; |
| tv->tv_sec = ts.tv_sec; |
| tv->tv_usec = ts.tv_nsec / NSEC_PER_USEC; |
| vbuf->vb.v4l2_buf.sequence = fimc->frame_count++; |
| vb2_buffer_done(&vbuf->vb, VB2_BUF_STATE_DONE); |
| |
| vbuf = fimc_lite_pending_queue_pop(fimc); |
| flite_hw_set_output_addr(fimc, vbuf->paddr); |
| fimc_lite_active_queue_add(fimc, vbuf); |
| } |
| |
| if (test_bit(ST_FLITE_CONFIG, &fimc->state)) |
| fimc_lite_config_update(fimc); |
| |
| 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); |
| spin_unlock_irqrestore(&fimc->slock, flags); |
| return IRQ_HANDLED; |
| } |
| |
| static int start_streaming(struct vb2_queue *q, unsigned int count) |
| { |
| struct fimc_lite *fimc = q->drv_priv; |
| int ret; |
| |
| fimc->frame_count = 0; |
| |
| ret = fimc_lite_hw_init(fimc, false); |
| if (ret) { |
| fimc_lite_reinit(fimc, false); |
| return ret; |
| } |
| |
| 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, set_stream, |
| &fimc->pipeline, 1); |
| } |
| if (debug > 0) |
| flite_hw_dump_regs(fimc, __func__); |
| |
| return 0; |
| } |
| |
| static int stop_streaming(struct vb2_queue *q) |
| { |
| struct fimc_lite *fimc = q->drv_priv; |
| |
| if (!fimc_lite_active(fimc)) |
| return -EINVAL; |
| |
| return fimc_lite_stop_capture(fimc, false); |
| } |
| |
| static int queue_setup(struct vb2_queue *vq, const struct v4l2_format *pfmt, |
| unsigned int *num_buffers, unsigned int *num_planes, |
| unsigned int sizes[], void *allocators[]) |
| { |
| const struct v4l2_pix_format_mplane *pixm = NULL; |
| struct fimc_lite *fimc = vq->drv_priv; |
| struct flite_frame *frame = &fimc->out_frame; |
| const struct fimc_fmt *fmt = fimc->fmt; |
| unsigned long wh; |
| int i; |
| |
| if (pfmt) { |
| pixm = &pfmt->fmt.pix_mp; |
| fmt = fimc_lite_find_format(&pixm->pixelformat, NULL, -1); |
| wh = pixm->width * pixm->height; |
| } else { |
| wh = frame->f_width * frame->f_height; |
| } |
| |
| if (fmt == NULL) |
| return -EINVAL; |
| |
| *num_planes = fmt->memplanes; |
| |
| for (i = 0; i < fmt->memplanes; i++) { |
| unsigned int size = (wh * fmt->depth[i]) / 8; |
| if (pixm) |
| sizes[i] = max(size, pixm->plane_fmt[i].sizeimage); |
| else |
| sizes[i] = size; |
| allocators[i] = fimc->alloc_ctx; |
| } |
| |
| 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->fmt == NULL) |
| return -EINVAL; |
| |
| for (i = 0; i < fimc->fmt->memplanes; i++) { |
| unsigned long size = fimc->payload[i]; |
| |
| if (vb2_plane_size(vb, i) < size) { |
| v4l2_err(&fimc->vfd, |
| "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 flite_buffer *buf |
| = container_of(vb, 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); |
| |
| if (!test_bit(ST_FLITE_SUSPENDED, &fimc->state) && |
| !test_bit(ST_FLITE_STREAM, &fimc->state) && |
| list_empty(&fimc->active_buf_q)) { |
| flite_hw_set_output_addr(fimc, buf->paddr); |
| 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, set_stream, |
| &fimc->pipeline, 1); |
| return; |
| } |
| spin_unlock_irqrestore(&fimc->slock, flags); |
| } |
| |
| static void fimc_lock(struct vb2_queue *vq) |
| { |
| struct fimc_lite *fimc = vb2_get_drv_priv(vq); |
| mutex_lock(&fimc->lock); |
| } |
| |
| static void fimc_unlock(struct vb2_queue *vq) |
| { |
| struct fimc_lite *fimc = vb2_get_drv_priv(vq); |
| mutex_unlock(&fimc->lock); |
| } |
| |
| static const struct vb2_ops fimc_lite_qops = { |
| .queue_setup = queue_setup, |
| .buf_prepare = buffer_prepare, |
| .buf_queue = buffer_queue, |
| .wait_prepare = fimc_unlock, |
| .wait_finish = fimc_lock, |
| .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->vfd.entity; |
| int ret; |
| |
| mutex_lock(&me->parent->graph_mutex); |
| |
| mutex_lock(&fimc->lock); |
| if (atomic_read(&fimc->out_path) != FIMC_IO_DMA) { |
| ret = -EBUSY; |
| goto done; |
| } |
| |
| set_bit(ST_FLITE_IN_USE, &fimc->state); |
| ret = pm_runtime_get_sync(&fimc->pdev->dev); |
| if (ret < 0) |
| goto done; |
| |
| ret = v4l2_fh_open(file); |
| if (ret < 0) |
| goto done; |
| |
| if (++fimc->ref_count == 1 && |
| atomic_read(&fimc->out_path) == FIMC_IO_DMA) { |
| ret = fimc_pipeline_call(fimc, open, &fimc->pipeline, |
| &fimc->vfd.entity, true); |
| if (ret < 0) { |
| pm_runtime_put_sync(&fimc->pdev->dev); |
| fimc->ref_count--; |
| v4l2_fh_release(file); |
| clear_bit(ST_FLITE_IN_USE, &fimc->state); |
| } |
| |
| fimc_lite_clear_event_counters(fimc); |
| } |
| done: |
| mutex_unlock(&fimc->lock); |
| mutex_unlock(&me->parent->graph_mutex); |
| return ret; |
| } |
| |
| static int fimc_lite_close(struct file *file) |
| { |
| struct fimc_lite *fimc = video_drvdata(file); |
| int ret; |
| |
| mutex_lock(&fimc->lock); |
| |
| if (--fimc->ref_count == 0 && |
| atomic_read(&fimc->out_path) == FIMC_IO_DMA) { |
| clear_bit(ST_FLITE_IN_USE, &fimc->state); |
| fimc_lite_stop_capture(fimc, false); |
| fimc_pipeline_call(fimc, close, &fimc->pipeline); |
| clear_bit(ST_FLITE_SUSPENDED, &fimc->state); |
| } |
| |
| pm_runtime_put(&fimc->pdev->dev); |
| |
| if (fimc->ref_count == 0) |
| vb2_queue_release(&fimc->vb_queue); |
| |
| ret = v4l2_fh_release(file); |
| |
| mutex_unlock(&fimc->lock); |
| return ret; |
| } |
| |
| static unsigned int fimc_lite_poll(struct file *file, |
| struct poll_table_struct *wait) |
| { |
| struct fimc_lite *fimc = video_drvdata(file); |
| int ret; |
| |
| if (mutex_lock_interruptible(&fimc->lock)) |
| return POLL_ERR; |
| |
| ret = vb2_poll(&fimc->vb_queue, file, wait); |
| mutex_unlock(&fimc->lock); |
| |
| return ret; |
| } |
| |
| static int fimc_lite_mmap(struct file *file, struct vm_area_struct *vma) |
| { |
| struct fimc_lite *fimc = video_drvdata(file); |
| int ret; |
| |
| if (mutex_lock_interruptible(&fimc->lock)) |
| return -ERESTARTSYS; |
| |
| ret = vb2_mmap(&fimc->vb_queue, vma); |
| mutex_unlock(&fimc->lock); |
| |
| return ret; |
| } |
| |
| static const struct v4l2_file_operations fimc_lite_fops = { |
| .owner = THIS_MODULE, |
| .open = fimc_lite_open, |
| .release = fimc_lite_close, |
| .poll = fimc_lite_poll, |
| .unlocked_ioctl = video_ioctl2, |
| .mmap = fimc_lite_mmap, |
| }; |
| |
| /* |
| * Format and crop negotiation helpers |
| */ |
| |
| static const struct fimc_fmt *fimc_lite_try_format(struct fimc_lite *fimc, |
| u32 *width, u32 *height, |
| u32 *code, u32 *fourcc, int pad) |
| { |
| struct flite_variant *variant = fimc->variant; |
| const struct fimc_fmt *fmt; |
| |
| fmt = fimc_lite_find_format(fourcc, code, 0); |
| if (WARN_ON(!fmt)) |
| return NULL; |
| |
| if (code) |
| *code = fmt->mbus_code; |
| if (fourcc) |
| *fourcc = fmt->fourcc; |
| |
| if (pad == FLITE_SD_PAD_SINK) { |
| v4l_bound_align_image(width, 8, variant->max_width, |
| ffs(variant->out_width_align) - 1, |
| height, 0, variant->max_height, 0, 0); |
| } else { |
| v4l_bound_align_image(width, 8, fimc->inp_frame.rect.width, |
| ffs(variant->out_width_align) - 1, |
| height, 0, fimc->inp_frame.rect.height, |
| 0, 0); |
| } |
| |
| v4l2_dbg(1, debug, &fimc->subdev, "code: 0x%x, %dx%d\n", |
| code ? *code : 0, *width, *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->variant->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->variant->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_vidioc_querycap_capture(struct file *file, void *priv, |
| struct v4l2_capability *cap) |
| { |
| strlcpy(cap->driver, FIMC_LITE_DRV_NAME, sizeof(cap->driver)); |
| cap->bus_info[0] = 0; |
| cap->card[0] = 0; |
| cap->capabilities = V4L2_CAP_STREAMING; |
| return 0; |
| } |
| |
| static int fimc_lite_enum_fmt_mplane(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]; |
| strlcpy(f->description, fmt->name, sizeof(f->description)); |
| 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 = fimc->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 = V4L2_COLORSPACE_JPEG; |
| return 0; |
| } |
| |
| static int fimc_lite_try_fmt(struct fimc_lite *fimc, |
| struct v4l2_pix_format_mplane *pixm, |
| const struct fimc_fmt **ffmt) |
| { |
| struct flite_variant *variant = fimc->variant; |
| u32 bpl = pixm->plane_fmt[0].bytesperline; |
| const struct fimc_fmt *fmt; |
| |
| fmt = fimc_lite_find_format(&pixm->pixelformat, NULL, 0); |
| if (WARN_ON(fmt == NULL)) |
| return -EINVAL; |
| if (ffmt) |
| *ffmt = fmt; |
| v4l_bound_align_image(&pixm->width, 8, variant->max_width, |
| ffs(variant->out_width_align) - 1, |
| &pixm->height, 0, variant->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 = V4L2_COLORSPACE_JPEG; |
| 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; |
| |
| fimc->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->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_source(pad); |
| if (pad == NULL || |
| media_entity_type(pad->entity) != MEDIA_ENT_T_V4L2_SUBDEV) |
| 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 v4l2_subdev *sensor = fimc->pipeline.subdevs[IDX_SENSOR]; |
| struct fimc_pipeline *p = &fimc->pipeline; |
| int ret; |
| |
| if (fimc_lite_active(fimc)) |
| return -EBUSY; |
| |
| ret = media_entity_pipeline_start(&sensor->entity, p->m_pipeline); |
| if (ret < 0) |
| return ret; |
| |
| ret = fimc_pipeline_validate(fimc); |
| if (ret) { |
| media_entity_pipeline_stop(&sensor->entity); |
| return ret; |
| } |
| |
| return vb2_streamon(&fimc->vb_queue, type); |
| } |
| |
| static int fimc_lite_streamoff(struct file *file, void *priv, |
| enum v4l2_buf_type type) |
| { |
| struct fimc_lite *fimc = video_drvdata(file); |
| struct v4l2_subdev *sd = fimc->pipeline.subdevs[IDX_SENSOR]; |
| int ret; |
| |
| ret = vb2_streamoff(&fimc->vb_queue, type); |
| if (ret == 0) |
| media_entity_pipeline_stop(&sd->entity); |
| return ret; |
| } |
| |
| 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_reqbufs(&fimc->vb_queue, reqbufs); |
| if (!ret) |
| fimc->reqbufs_count = reqbufs->count; |
| |
| return ret; |
| } |
| |
| static int fimc_lite_querybuf(struct file *file, void *priv, |
| struct v4l2_buffer *buf) |
| { |
| struct fimc_lite *fimc = video_drvdata(file); |
| |
| return vb2_querybuf(&fimc->vb_queue, buf); |
| } |
| |
| static int fimc_lite_qbuf(struct file *file, void *priv, |
| struct v4l2_buffer *buf) |
| { |
| struct fimc_lite *fimc = video_drvdata(file); |
| |
| return vb2_qbuf(&fimc->vb_queue, buf); |
| } |
| |
| static int fimc_lite_dqbuf(struct file *file, void *priv, |
| struct v4l2_buffer *buf) |
| { |
| struct fimc_lite *fimc = video_drvdata(file); |
| |
| return vb2_dqbuf(&fimc->vb_queue, buf, file->f_flags & O_NONBLOCK); |
| } |
| |
| static int fimc_lite_create_bufs(struct file *file, void *priv, |
| struct v4l2_create_buffers *create) |
| { |
| struct fimc_lite *fimc = video_drvdata(file); |
| |
| return vb2_create_bufs(&fimc->vb_queue, create); |
| } |
| |
| static int fimc_lite_prepare_buf(struct file *file, void *priv, |
| struct v4l2_buffer *b) |
| { |
| struct fimc_lite *fimc = video_drvdata(file); |
| |
| return vb2_prepare_buf(&fimc->vb_queue, b); |
| } |
| |
| /* Return 1 if rectangle a is enclosed in rectangle b, or 0 otherwise. */ |
| static int enclosed_rectangle(struct v4l2_rect *a, struct v4l2_rect *b) |
| { |
| if (a->left < b->left || a->top < b->top) |
| return 0; |
| if (a->left + a->width > b->left + b->width) |
| return 0; |
| if (a->top + a->height > b->top + b->height) |
| return 0; |
| |
| return 1; |
| } |
| |
| 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_MPLANE) |
| 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_MPLANE || |
| sel->target != V4L2_SEL_TGT_COMPOSE) |
| return -EINVAL; |
| |
| fimc_lite_try_compose(fimc, &rect); |
| |
| if ((sel->flags & V4L2_SEL_FLAG_LE) && |
| !enclosed_rectangle(&rect, &sel->r)) |
| return -ERANGE; |
| |
| if ((sel->flags & V4L2_SEL_FLAG_GE) && |
| !enclosed_rectangle(&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_vidioc_querycap_capture, |
| .vidioc_enum_fmt_vid_cap_mplane = fimc_lite_enum_fmt_mplane, |
| .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 = fimc_lite_querybuf, |
| .vidioc_prepare_buf = fimc_lite_prepare_buf, |
| .vidioc_create_bufs = fimc_lite_create_bufs, |
| .vidioc_qbuf = fimc_lite_qbuf, |
| .vidioc_dqbuf = fimc_lite_dqbuf, |
| .vidioc_streamon = fimc_lite_streamon, |
| .vidioc_streamoff = fimc_lite_streamoff, |
| }; |
| |
| /* Called with the media graph mutex held */ |
| static struct v4l2_subdev *__find_remote_sensor(struct media_entity *me) |
| { |
| struct media_pad *pad = &me->pads[0]; |
| struct v4l2_subdev *sd; |
| |
| while (pad->flags & MEDIA_PAD_FL_SINK) { |
| /* source pad */ |
| pad = media_entity_remote_source(pad); |
| if (pad == NULL || |
| media_entity_type(pad->entity) != MEDIA_ENT_T_V4L2_SUBDEV) |
| break; |
| |
| sd = media_entity_to_v4l2_subdev(pad->entity); |
| |
| if (sd->grp_id == GRP_ID_FIMC_IS_SENSOR) |
| return sd; |
| /* sink pad */ |
| pad = &sd->entity.pads[0]; |
| } |
| return NULL; |
| } |
| |
| /* 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); |
| unsigned int remote_ent_type = media_entity_type(remote->entity); |
| 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); |
| |
| mutex_lock(&fimc->lock); |
| |
| switch (local->index) { |
| case FLITE_SD_PAD_SINK: |
| if (remote_ent_type != MEDIA_ENT_T_V4L2_SUBDEV) { |
| ret = -EINVAL; |
| break; |
| } |
| 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 if (remote_ent_type == MEDIA_ENT_T_DEVNODE) |
| atomic_set(&fimc->out_path, FIMC_IO_DMA); |
| else |
| ret = -EINVAL; |
| break; |
| |
| case FLITE_SD_PAD_SOURCE_ISP: |
| if (!(flags & MEDIA_LNK_FL_ENABLED)) |
| atomic_set(&fimc->out_path, FIMC_IO_NONE); |
| else if (remote_ent_type == MEDIA_ENT_T_V4L2_SUBDEV) |
| atomic_set(&fimc->out_path, FIMC_IO_ISP); |
| else |
| ret = -EINVAL; |
| break; |
| |
| default: |
| v4l2_err(sd, "Invalid pad index\n"); |
| ret = -EINVAL; |
| } |
| mb(); |
| |
| mutex_unlock(&fimc->lock); |
| 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_fh *fh, |
| struct v4l2_subdev_mbus_code_enum *code) |
| { |
| const struct fimc_fmt *fmt; |
| |
| fmt = fimc_lite_find_format(NULL, NULL, code->index); |
| if (!fmt) |
| return -EINVAL; |
| code->code = fmt->mbus_code; |
| return 0; |
| } |
| |
| static int fimc_lite_subdev_get_fmt(struct v4l2_subdev *sd, |
| struct v4l2_subdev_fh *fh, |
| 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->out_frame; |
| |
| if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) { |
| mf = v4l2_subdev_get_try_format(fh, fmt->pad); |
| fmt->format = *mf; |
| return 0; |
| } |
| mf->colorspace = V4L2_COLORSPACE_JPEG; |
| |
| mutex_lock(&fimc->lock); |
| mf->code = fimc->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_fh *fh, |
| 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); |
| |
| mf->colorspace = V4L2_COLORSPACE_JPEG; |
| 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_try_format(fimc, &mf->width, &mf->height, |
| &mf->code, NULL, fmt->pad); |
| |
| if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) { |
| mf = v4l2_subdev_get_try_format(fh, fmt->pad); |
| *mf = fmt->format; |
| mutex_unlock(&fimc->lock); |
| return 0; |
| } |
| |
| if (fmt->pad == FLITE_SD_PAD_SINK) { |
| sink->f_width = mf->width; |
| sink->f_height = mf->height; |
| fimc->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; |
| } else { |
| /* Allow changing format only on sink pad */ |
| mf->code = fimc->fmt->mbus_code; |
| mf->width = sink->rect.width; |
| mf->height = sink->rect.height; |
| } |
| |
| mutex_unlock(&fimc->lock); |
| return 0; |
| } |
| |
| static int fimc_lite_subdev_get_selection(struct v4l2_subdev *sd, |
| struct v4l2_subdev_fh *fh, |
| 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(fh, 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_fh *fh, |
| 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(fh, 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 = __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->vfd; |
| int ret; |
| |
| memset(vfd, 0, sizeof(*vfd)); |
| |
| fimc->fmt = &fimc_lite_formats[0]; |
| 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->lock = &fimc->lock; |
| fimc->ref_count = 0; |
| 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; |
| |
| ret = vb2_queue_init(q); |
| if (ret < 0) |
| return ret; |
| |
| fimc->vd_pad.flags = MEDIA_PAD_FL_SINK; |
| ret = media_entity_init(&vfd->entity, 1, &fimc->vd_pad, 0); |
| if (ret < 0) |
| return ret; |
| |
| video_set_drvdata(vfd, fimc); |
| fimc->pipeline_ops = v4l2_get_subdev_hostdata(sd); |
| |
| ret = video_register_device(vfd, VFL_TYPE_GRABBER, -1); |
| if (ret < 0) { |
| media_entity_cleanup(&vfd->entity); |
| fimc->pipeline_ops = 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; |
| |
| if (video_is_registered(&fimc->vfd)) { |
| video_unregister_device(&fimc->vfd); |
| media_entity_cleanup(&fimc->vfd.entity); |
| fimc->pipeline_ops = NULL; |
| } |
| } |
| |
| 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 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 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_init(&sd->entity, FLITE_SD_PADS_NUM, |
| fimc->subdev_pads, 0); |
| 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.ops = &fimc_lite_subdev_media_ops; |
| 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_OR_NULL(fimc->clock)) |
| return; |
| |
| clk_unprepare(fimc->clock); |
| clk_put(fimc->clock); |
| fimc->clock = NULL; |
| } |
| |
| static int fimc_lite_clk_get(struct fimc_lite *fimc) |
| { |
| int ret; |
| |
| fimc->clock = clk_get(&fimc->pdev->dev, FLITE_CLK_NAME); |
| if (IS_ERR(fimc->clock)) |
| return PTR_ERR(fimc->clock); |
| |
| ret = clk_prepare(fimc->clock); |
| if (ret < 0) { |
| clk_put(fimc->clock); |
| fimc->clock = NULL; |
| } |
| return ret; |
| } |
| |
| static int fimc_lite_probe(struct platform_device *pdev) |
| { |
| struct flite_drvdata *drv_data = fimc_lite_get_drvdata(pdev); |
| struct fimc_lite *fimc; |
| struct resource *res; |
| int ret; |
| |
| fimc = devm_kzalloc(&pdev->dev, sizeof(*fimc), GFP_KERNEL); |
| if (!fimc) |
| return -ENOMEM; |
| |
| fimc->index = pdev->id; |
| fimc->variant = drv_data->variant[fimc->index]; |
| 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(&pdev->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(&pdev->dev, "Failed to get IRQ resource\n"); |
| return -ENXIO; |
| } |
| |
| ret = fimc_lite_clk_get(fimc); |
| if (ret) |
| return ret; |
| |
| ret = devm_request_irq(&pdev->dev, res->start, flite_irq_handler, |
| 0, dev_name(&pdev->dev), fimc); |
| if (ret) { |
| dev_err(&pdev->dev, "Failed to install irq (%d)\n", ret); |
| goto err_clk; |
| } |
| |
| /* The video node will be created within the subdev's registered() op */ |
| ret = fimc_lite_create_capture_subdev(fimc); |
| if (ret) |
| goto err_clk; |
| |
| platform_set_drvdata(pdev, fimc); |
| pm_runtime_enable(&pdev->dev); |
| ret = pm_runtime_get_sync(&pdev->dev); |
| if (ret < 0) |
| goto err_sd; |
| |
| fimc->alloc_ctx = vb2_dma_contig_init_ctx(&pdev->dev); |
| if (IS_ERR(fimc->alloc_ctx)) { |
| ret = PTR_ERR(fimc->alloc_ctx); |
| goto err_pm; |
| } |
| pm_runtime_put(&pdev->dev); |
| |
| dev_dbg(&pdev->dev, "FIMC-LITE.%d registered successfully\n", |
| fimc->index); |
| return 0; |
| err_pm: |
| pm_runtime_put(&pdev->dev); |
| err_sd: |
| fimc_lite_unregister_capture_subdev(fimc); |
| err_clk: |
| fimc_lite_clk_put(fimc); |
| return ret; |
| } |
| |
| static int fimc_lite_runtime_resume(struct device *dev) |
| { |
| struct fimc_lite *fimc = dev_get_drvdata(dev); |
| |
| clk_enable(fimc->clock); |
| return 0; |
| } |
| |
| static int fimc_lite_runtime_suspend(struct device *dev) |
| { |
| struct fimc_lite *fimc = dev_get_drvdata(dev); |
| |
| clk_disable(fimc->clock); |
| return 0; |
| } |
| |
| #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, open, &fimc->pipeline, |
| &fimc->vfd.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); |
| } |
| 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, close, &fimc->pipeline); |
| } |
| #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; |
| |
| pm_runtime_disable(dev); |
| pm_runtime_set_suspended(dev); |
| fimc_lite_unregister_capture_subdev(fimc); |
| vb2_dma_contig_cleanup_ctx(fimc->alloc_ctx); |
| fimc_lite_clk_put(fimc); |
| |
| dev_info(dev, "Driver unloaded\n"); |
| return 0; |
| } |
| |
| static struct flite_variant fimc_lite0_variant_exynos4 = { |
| .max_width = 8192, |
| .max_height = 8192, |
| .out_width_align = 8, |
| .win_hor_offs_align = 2, |
| .out_hor_offs_align = 8, |
| }; |
| |
| /* EXYNOS4212, EXYNOS4412 */ |
| static struct flite_drvdata fimc_lite_drvdata_exynos4 = { |
| .variant = { |
| [0] = &fimc_lite0_variant_exynos4, |
| [1] = &fimc_lite0_variant_exynos4, |
| }, |
| }; |
| |
| static struct platform_device_id fimc_lite_driver_ids[] = { |
| { |
| .name = "exynos-fimc-lite", |
| .driver_data = (unsigned long)&fimc_lite_drvdata_exynos4, |
| }, |
| { /* sentinel */ }, |
| }; |
| MODULE_DEVICE_TABLE(platform, fimc_lite_driver_ids); |
| |
| 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) |
| }; |
| |
| static struct platform_driver fimc_lite_driver = { |
| .probe = fimc_lite_probe, |
| .remove = fimc_lite_remove, |
| .id_table = fimc_lite_driver_ids, |
| .driver = { |
| .name = FIMC_LITE_DRV_NAME, |
| .owner = THIS_MODULE, |
| .pm = &fimc_lite_pm_ops, |
| } |
| }; |
| module_platform_driver(fimc_lite_driver); |
| MODULE_LICENSE("GPL"); |
| MODULE_ALIAS("platform:" FIMC_LITE_DRV_NAME); |