Now that continuous mode is gone and we only have 1 /dev/video# node, the videobuf2 core guarantees that atomisp_[start|stop]_streaming() will only be called one at a time. So there is no need to check for things like the isp is already streaming when starting, or other streams still being active while stopping. Remove checks for these from atomisp_[start|stop]_streaming(). While at it also improve the logging a bit: 1. Remove the dev_err(isp->dev, "atomisp_reset") logged on every stream stop (even though everything is fine. 2. Log a message when starting/stopping the sensor stream fails Signed-off-by: Hans de Goede <hdegoede@xxxxxxxxxx> --- .../staging/media/atomisp/pci/atomisp_ioctl.c | 89 ++++--------------- 1 file changed, 17 insertions(+), 72 deletions(-) diff --git a/drivers/staging/media/atomisp/pci/atomisp_ioctl.c b/drivers/staging/media/atomisp/pci/atomisp_ioctl.c index 13e00a2af8e1..087ec5120bce 100644 --- a/drivers/staging/media/atomisp/pci/atomisp_ioctl.c +++ b/drivers/staging/media/atomisp/pci/atomisp_ioctl.c @@ -615,12 +615,6 @@ static int atomisp_enum_input(struct file *file, void *fh, return 0; } -static unsigned int -atomisp_subdev_streaming_count(struct atomisp_sub_device *asd) -{ - return vb2_start_streaming_called(&asd->video_out.vb_queue); -} - unsigned int atomisp_streaming_count(struct atomisp_device *isp) { return isp->asd.streaming == ATOMISP_DEVICE_STREAMING_ENABLED; @@ -1162,11 +1156,6 @@ int atomisp_start_streaming(struct vb2_queue *vq, unsigned int count) /* Input system HW workaround */ atomisp_dma_burst_len_cfg(asd); - if (asd->streaming == ATOMISP_DEVICE_STREAMING_ENABLED) { - atomisp_qbuffers_to_css(asd); - goto start_sensor; - } - css_pipe_id = atomisp_get_css_pipe_id(asd); /* Invalidate caches. FIXME: should flush only necessary buffers */ @@ -1206,7 +1195,6 @@ int atomisp_start_streaming(struct vb2_queue *vq, unsigned int count) atomisp_qbuffers_to_css(asd); -start_sensor: if (isp->flash) { asd->params.num_flash_frames = 0; asd->params.flash_state = ATOMISP_FLASH_IDLE; @@ -1216,19 +1204,9 @@ int atomisp_start_streaming(struct vb2_queue *vq, unsigned int count) atomisp_css_irq_enable(isp, IA_CSS_IRQ_INFO_CSS_RECEIVER_SOF, atomisp_css_valid_sof(isp)); atomisp_csi2_configure(asd); - /* - * set freq to max when streaming count > 1 which indicate - * dual camera would run - */ - if (atomisp_streaming_count(isp) > 1) { - if (atomisp_freq_scaling(isp, - ATOMISP_DFS_MODE_MAX, false) < 0) - dev_dbg(isp->dev, "DFS max mode failed!\n"); - } else { - if (atomisp_freq_scaling(isp, - ATOMISP_DFS_MODE_AUTO, false) < 0) - dev_dbg(isp->dev, "DFS auto mode failed!\n"); - } + + if (atomisp_freq_scaling(isp, ATOMISP_DFS_MODE_AUTO, false) < 0) + dev_dbg(isp->dev, "DFS auto mode failed!\n"); /* Enable the CSI interface on ANN B0/K0 */ if (isp->media_dev.hw_revision >= ((ATOMISP_HW_REVISION_ISP2401 << @@ -1241,6 +1219,7 @@ int atomisp_start_streaming(struct vb2_queue *vq, unsigned int count) ret = v4l2_subdev_call(isp->inputs[asd->input_curr].camera, video, s_stream, 1); if (ret) { + dev_err(isp->dev, "Starting sensor stream failed: %d\n", ret); spin_lock_irqsave(&isp->lock, irqflags); asd->streaming = ATOMISP_DEVICE_STREAMING_DISABLED; spin_unlock_irqrestore(&isp->lock, irqflags); @@ -1260,8 +1239,6 @@ void atomisp_stop_streaming(struct vb2_queue *vq) struct atomisp_device *isp = asd->isp; struct pci_dev *pdev = to_pci_dev(isp->dev); enum ia_css_pipe_id css_pipe_id; - bool recreate_stream = false; - bool first_streamoff = false; unsigned long flags; int ret; @@ -1284,19 +1261,10 @@ void atomisp_stop_streaming(struct vb2_queue *vq) if (ret == 0) dev_warn(isp->dev, "Warning timeout waiting for CSS to return buffers\n"); - if (asd->streaming == ATOMISP_DEVICE_STREAMING_ENABLED) - first_streamoff = true; - spin_lock_irqsave(&isp->lock, flags); - if (atomisp_subdev_streaming_count(asd) == 1) - asd->streaming = ATOMISP_DEVICE_STREAMING_DISABLED; - else - asd->streaming = ATOMISP_DEVICE_STREAMING_STOPPING; + asd->streaming = ATOMISP_DEVICE_STREAMING_DISABLED; spin_unlock_irqrestore(&isp->lock, flags); - if (!first_streamoff) - goto stopsensor; - atomisp_clear_css_buffer_counters(asd); atomisp_css_irq_enable(isp, IA_CSS_IRQ_INFO_CSS_RECEIVER_SOF, false); @@ -1306,21 +1274,17 @@ void atomisp_stop_streaming(struct vb2_queue *vq) atomisp_flush_video_pipe(pipe, VB2_BUF_STATE_ERROR, true); atomisp_subdev_cleanup_pending_events(asd); -stopsensor: + ret = v4l2_subdev_call(isp->inputs[asd->input_curr].camera, video, s_stream, 0); + if (ret) + dev_warn(isp->dev, "Stopping sensor stream failed: %d\n", ret); if (isp->flash) { asd->params.num_flash_frames = 0; asd->params.flash_state = ATOMISP_FLASH_IDLE; } - /* if other streams are running, isp should not be powered off */ - if (atomisp_streaming_count(isp)) { - atomisp_css_flush(isp); - goto out_unlock; - } - /* Disable the CSI interface on ANN B0/K0 */ if (isp->media_dev.hw_revision >= ((ATOMISP_HW_REVISION_ISP2401 << ATOMISP_HW_REVISION_SHIFT) | ATOMISP_HW_STEPPING_B0)) { @@ -1330,40 +1294,21 @@ void atomisp_stop_streaming(struct vb2_queue *vq) if (atomisp_freq_scaling(isp, ATOMISP_DFS_MODE_LOW, false)) dev_warn(isp->dev, "DFS failed.\n"); - /* - * ISP work around, need to reset isp - * Is it correct time to reset ISP when first node does streamoff? - * - * It is possible that the other asd stream is in the stage - * that v4l2_setfmt is just get called on it, which will - * create css stream on that stream. But at this point, there - * is no way to destroy the css stream created on that stream. - * - * So force stream destroy here. - */ - if (isp->asd.stream_prepared) { - atomisp_destroy_pipes_stream_force(&isp->asd); - recreate_stream = true; - } - /* disable PUNIT/ISP acknowlede/handshake - SRSE=3 */ + /* + * ISP work around, need to reset ISP to allow next stream on to work. + * Streams have already been destroyed by atomisp_css_stop(). + * Disable PUNIT/ISP acknowlede/handshake - SRSE=3 and then reset. + */ pci_write_config_dword(pdev, PCI_I_CONTROL, isp->saved_regs.i_control | MRFLD_PCI_I_CONTROL_SRSE_RESET_MASK); - dev_err(isp->dev, "atomisp_reset"); atomisp_reset(isp); - if (recreate_stream) { - int ret2; + /* Streams were destroyed by atomisp_css_stop(), recreate them. */ + ret = atomisp_create_pipes_stream(&isp->asd); + if (ret) + dev_warn(isp->dev, "Recreating streams failed: %d\n", ret); - ret2 = atomisp_create_pipes_stream(&isp->asd); - if (ret2) { - dev_err(isp->dev, "%s error re-creating streams: %d\n", __func__, ret2); - if (!ret) - ret = ret2; - } - } - -out_unlock: mutex_unlock(&isp->mutex); } -- 2.40.1