user/sven/linux.git/drivers/gpu/ipu-v3, branch v5.4.108

gpu: ipu-v3: image-convert: Wait for all EOFs before completing a tile

2020-08-21T11:05:32Z

[ Upstream commit dd81d821d0b3f77d949d0cac5c05c1f05b921d46 ] Use a bit-mask of EOF irqs to determine when all required idmac channel EOFs have been received for a tile conversion, and only do tile completion processing after all EOFs have been received. Otherwise it was found that a conversion would stall after the completion of a tile and the start of the next tile, because the input/read idmac channel had not completed and entered idle state, thus locking up the channel when attempting to re-start it for the next tile. Fixes: 0537db801bb01 ("gpu: ipu-v3: image-convert: reconfigure IC per tile") Signed-off-by: Steve Longerbeam Signed-off-by: Philipp Zabel Signed-off-by: Sasha Levin

gpu: ipu-v3: image-convert: Combine rotate/no-rotate irq handlers

2020-08-21T11:05:32Z

[ Upstream commit 0f6245f42ce9b7e4d20f2cda8d5f12b55a44d7d1 ] Combine the rotate_irq() and norotate_irq() handlers into a single eof_irq() handler. Signed-off-by: Steve Longerbeam Signed-off-by: Philipp Zabel Signed-off-by: Sasha Levin

gpu: ipu-v3: Restore RGB32, BGR32

2020-08-19T06:16:13Z

[ Upstream commit 22b2cfad752d4b278ea7c38c0ee961ca50198ce8 ] RGB32 and BGR32 formats were inadvertently removed from the switch statement in ipu_pixelformat_to_colorspace(). Restore them. Fixes: a59957172b0c ("gpu: ipu-v3: enable remaining 32-bit RGB V4L2 pixel formats") Signed-off-by: Steve Longerbeam Signed-off-by: Philipp Zabel Signed-off-by: Sasha Levin

gpu: ipu-v3: image-convert: only sample into the next tile if necessary

2019-08-19T14:25:30Z

The first pixel of the next tile is only sampled by the hardware if the fractional input position corresponding to the last written output pixel is not an integer position. Signed-off-by: Philipp Zabel

gpu: ipu-v3: image-convert: move tile burst alignment out of loop

2019-08-19T14:25:30Z

Burst aligned input and output width can be calculated once per column, instead of repeatedly for each tile in the column. The same goes for input and output height per row. Also don't round up the same values repeatedly. Signed-off-by: Philipp Zabel

gpu: ipu-v3: image-convert: bail on invalid tile sizes

2019-08-19T14:25:30Z

If we managed to create tiles sized 0x0 because of a bug in the seam calculation, return with an error message instead of letting the driver run into a division by zero later. Also check for tile sizes that are larger than supported by the hardware. Signed-off-by: Philipp Zabel

gpu: ipu-v3: image-convert: fix image downsize coefficients and tiling calculation

2019-08-19T14:25:30Z

This patch effectively reverts commit 912bbf7e9ca4 ("gpu: ipu-v3: image-convert: Fix image downsize coefficients") and replaces it with a different solution based on the preceding patches. The previous fix tried to solve the problem of intermediate tile size between IC downsizing and main processing sections not being limited to 1024 pixels by downsizing the input image to a smaller intermediate size in the downsizing box filter. This causes unnecessary blurring, especially for scaling factors close to 1. Now that the seam position calculation makes sure that the 1024 pixel intermediate tile size limit is not exceeded, calculate the number of tiles from the maximum of intermediate size and output size and avoid unnecessary downsizing. Signed-off-by: Philipp Zabel

gpu: ipu-v3: image-convert: limit input seam position to hardware requirements

2019-08-19T14:25:30Z

Limit the input seam position to an interval that guarantees the tile size does not exceed 1024 pixels after the IC downsizing section and that space is left for the next tile. Signed-off-by: Philipp Zabel

gpu: ipu-v3: image-convert: fix output seam valid interval

2019-08-19T14:24:37Z

This fixes a failure to determine any seam if the output size is exactly 1024 multiplied by the number of tiles in a given direction. In that case an empty interval out_start == out_end is being passed to find_best_seam, which looks for a seam out_start <= x < out_end. Also reduce the interval for all but the left column / top row, to avoid returning position 0 as best fit. Signed-off-by: Philipp Zabel

gpu: ipu-v3: image-convert: move output seam valid interval calculation into find_best_seam

2019-08-19T14:22:21Z

This reduces code duplication and allows to apply the following modifications in a single place. Signed-off-by: Philipp Zabel