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2512 lines
69 KiB
2512 lines
69 KiB
// SPDX-License-Identifier: GPL-2.0-or-later |
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/* |
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* Copyright (C) 2012-2016 Mentor Graphics Inc. |
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* |
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* Queued image conversion support, with tiling and rotation. |
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*/ |
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|
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#include <linux/interrupt.h> |
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#include <linux/dma-mapping.h> |
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#include <video/imx-ipu-image-convert.h> |
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#include "ipu-prv.h" |
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|
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/* |
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* The IC Resizer has a restriction that the output frame from the |
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* resizer must be 1024 or less in both width (pixels) and height |
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* (lines). |
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* |
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* The image converter attempts to split up a conversion when |
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* the desired output (converted) frame resolution exceeds the |
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* IC resizer limit of 1024 in either dimension. |
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* |
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* If either dimension of the output frame exceeds the limit, the |
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* dimension is split into 1, 2, or 4 equal stripes, for a maximum |
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* of 4*4 or 16 tiles. A conversion is then carried out for each |
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* tile (but taking care to pass the full frame stride length to |
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* the DMA channel's parameter memory!). IDMA double-buffering is used |
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* to convert each tile back-to-back when possible (see note below |
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* when double_buffering boolean is set). |
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* |
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* Note that the input frame must be split up into the same number |
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* of tiles as the output frame: |
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* |
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* +---------+-----+ |
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* +-----+---+ | A | B | |
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* | A | B | | | | |
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* +-----+---+ --> +---------+-----+ |
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* | C | D | | C | D | |
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* +-----+---+ | | | |
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* +---------+-----+ |
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* |
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* Clockwise 90° rotations are handled by first rescaling into a |
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* reusable temporary tile buffer and then rotating with the 8x8 |
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* block rotator, writing to the correct destination: |
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* |
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* +-----+-----+ |
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* | | | |
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* +-----+---+ +---------+ | C | A | |
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* | A | B | | A,B, | | | | | |
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* +-----+---+ --> | C,D | | --> | | | |
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* | C | D | +---------+ +-----+-----+ |
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* +-----+---+ | D | B | |
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* | | | |
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* +-----+-----+ |
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* |
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* If the 8x8 block rotator is used, horizontal or vertical flipping |
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* is done during the rotation step, otherwise flipping is done |
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* during the scaling step. |
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* With rotation or flipping, tile order changes between input and |
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* output image. Tiles are numbered row major from top left to bottom |
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* right for both input and output image. |
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*/ |
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#define MAX_STRIPES_W 4 |
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#define MAX_STRIPES_H 4 |
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#define MAX_TILES (MAX_STRIPES_W * MAX_STRIPES_H) |
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#define MIN_W 16 |
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#define MIN_H 8 |
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#define MAX_W 4096 |
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#define MAX_H 4096 |
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enum ipu_image_convert_type { |
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IMAGE_CONVERT_IN = 0, |
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IMAGE_CONVERT_OUT, |
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}; |
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struct ipu_image_convert_dma_buf { |
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void *virt; |
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dma_addr_t phys; |
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unsigned long len; |
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}; |
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struct ipu_image_convert_dma_chan { |
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int in; |
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int out; |
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int rot_in; |
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int rot_out; |
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int vdi_in_p; |
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int vdi_in; |
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int vdi_in_n; |
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}; |
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|
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/* dimensions of one tile */ |
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struct ipu_image_tile { |
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u32 width; |
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u32 height; |
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u32 left; |
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u32 top; |
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/* size and strides are in bytes */ |
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u32 size; |
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u32 stride; |
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u32 rot_stride; |
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/* start Y or packed offset of this tile */ |
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u32 offset; |
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/* offset from start to tile in U plane, for planar formats */ |
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u32 u_off; |
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/* offset from start to tile in V plane, for planar formats */ |
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u32 v_off; |
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}; |
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struct ipu_image_convert_image { |
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struct ipu_image base; |
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enum ipu_image_convert_type type; |
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const struct ipu_image_pixfmt *fmt; |
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unsigned int stride; |
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|
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/* # of rows (horizontal stripes) if dest height is > 1024 */ |
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unsigned int num_rows; |
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/* # of columns (vertical stripes) if dest width is > 1024 */ |
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unsigned int num_cols; |
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struct ipu_image_tile tile[MAX_TILES]; |
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}; |
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struct ipu_image_pixfmt { |
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u32 fourcc; /* V4L2 fourcc */ |
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int bpp; /* total bpp */ |
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int uv_width_dec; /* decimation in width for U/V planes */ |
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int uv_height_dec; /* decimation in height for U/V planes */ |
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bool planar; /* planar format */ |
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bool uv_swapped; /* U and V planes are swapped */ |
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bool uv_packed; /* partial planar (U and V in same plane) */ |
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}; |
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struct ipu_image_convert_ctx; |
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struct ipu_image_convert_chan; |
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struct ipu_image_convert_priv; |
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enum eof_irq_mask { |
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EOF_IRQ_IN = BIT(0), |
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EOF_IRQ_ROT_IN = BIT(1), |
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EOF_IRQ_OUT = BIT(2), |
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EOF_IRQ_ROT_OUT = BIT(3), |
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}; |
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#define EOF_IRQ_COMPLETE (EOF_IRQ_IN | EOF_IRQ_OUT) |
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#define EOF_IRQ_ROT_COMPLETE (EOF_IRQ_IN | EOF_IRQ_OUT | \ |
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EOF_IRQ_ROT_IN | EOF_IRQ_ROT_OUT) |
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struct ipu_image_convert_ctx { |
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struct ipu_image_convert_chan *chan; |
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ipu_image_convert_cb_t complete; |
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void *complete_context; |
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|
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/* Source/destination image data and rotation mode */ |
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struct ipu_image_convert_image in; |
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struct ipu_image_convert_image out; |
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struct ipu_ic_csc csc; |
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enum ipu_rotate_mode rot_mode; |
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u32 downsize_coeff_h; |
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u32 downsize_coeff_v; |
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u32 image_resize_coeff_h; |
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u32 image_resize_coeff_v; |
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u32 resize_coeffs_h[MAX_STRIPES_W]; |
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u32 resize_coeffs_v[MAX_STRIPES_H]; |
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|
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/* intermediate buffer for rotation */ |
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struct ipu_image_convert_dma_buf rot_intermediate[2]; |
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|
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/* current buffer number for double buffering */ |
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int cur_buf_num; |
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bool aborting; |
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struct completion aborted; |
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/* can we use double-buffering for this conversion operation? */ |
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bool double_buffering; |
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/* num_rows * num_cols */ |
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unsigned int num_tiles; |
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/* next tile to process */ |
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unsigned int next_tile; |
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/* where to place converted tile in dest image */ |
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unsigned int out_tile_map[MAX_TILES]; |
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/* mask of completed EOF irqs at every tile conversion */ |
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enum eof_irq_mask eof_mask; |
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struct list_head list; |
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}; |
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struct ipu_image_convert_chan { |
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struct ipu_image_convert_priv *priv; |
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enum ipu_ic_task ic_task; |
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const struct ipu_image_convert_dma_chan *dma_ch; |
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struct ipu_ic *ic; |
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struct ipuv3_channel *in_chan; |
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struct ipuv3_channel *out_chan; |
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struct ipuv3_channel *rotation_in_chan; |
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struct ipuv3_channel *rotation_out_chan; |
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|
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/* the IPU end-of-frame irqs */ |
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int in_eof_irq; |
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int rot_in_eof_irq; |
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int out_eof_irq; |
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int rot_out_eof_irq; |
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spinlock_t irqlock; |
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/* list of convert contexts */ |
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struct list_head ctx_list; |
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/* queue of conversion runs */ |
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struct list_head pending_q; |
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/* queue of completed runs */ |
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struct list_head done_q; |
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/* the current conversion run */ |
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struct ipu_image_convert_run *current_run; |
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}; |
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struct ipu_image_convert_priv { |
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struct ipu_image_convert_chan chan[IC_NUM_TASKS]; |
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struct ipu_soc *ipu; |
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}; |
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static const struct ipu_image_convert_dma_chan |
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image_convert_dma_chan[IC_NUM_TASKS] = { |
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[IC_TASK_VIEWFINDER] = { |
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.in = IPUV3_CHANNEL_MEM_IC_PRP_VF, |
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.out = IPUV3_CHANNEL_IC_PRP_VF_MEM, |
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.rot_in = IPUV3_CHANNEL_MEM_ROT_VF, |
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.rot_out = IPUV3_CHANNEL_ROT_VF_MEM, |
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.vdi_in_p = IPUV3_CHANNEL_MEM_VDI_PREV, |
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.vdi_in = IPUV3_CHANNEL_MEM_VDI_CUR, |
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.vdi_in_n = IPUV3_CHANNEL_MEM_VDI_NEXT, |
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}, |
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[IC_TASK_POST_PROCESSOR] = { |
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.in = IPUV3_CHANNEL_MEM_IC_PP, |
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.out = IPUV3_CHANNEL_IC_PP_MEM, |
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.rot_in = IPUV3_CHANNEL_MEM_ROT_PP, |
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.rot_out = IPUV3_CHANNEL_ROT_PP_MEM, |
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}, |
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}; |
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static const struct ipu_image_pixfmt image_convert_formats[] = { |
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{ |
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.fourcc = V4L2_PIX_FMT_RGB565, |
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.bpp = 16, |
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}, { |
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.fourcc = V4L2_PIX_FMT_RGB24, |
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.bpp = 24, |
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}, { |
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.fourcc = V4L2_PIX_FMT_BGR24, |
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.bpp = 24, |
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}, { |
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.fourcc = V4L2_PIX_FMT_RGB32, |
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.bpp = 32, |
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}, { |
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.fourcc = V4L2_PIX_FMT_BGR32, |
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.bpp = 32, |
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}, { |
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.fourcc = V4L2_PIX_FMT_XRGB32, |
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.bpp = 32, |
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}, { |
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.fourcc = V4L2_PIX_FMT_XBGR32, |
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.bpp = 32, |
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}, { |
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.fourcc = V4L2_PIX_FMT_BGRX32, |
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.bpp = 32, |
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}, { |
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.fourcc = V4L2_PIX_FMT_RGBX32, |
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.bpp = 32, |
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}, { |
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.fourcc = V4L2_PIX_FMT_YUYV, |
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.bpp = 16, |
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.uv_width_dec = 2, |
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.uv_height_dec = 1, |
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}, { |
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.fourcc = V4L2_PIX_FMT_UYVY, |
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.bpp = 16, |
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.uv_width_dec = 2, |
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.uv_height_dec = 1, |
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}, { |
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.fourcc = V4L2_PIX_FMT_YUV420, |
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.bpp = 12, |
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.planar = true, |
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.uv_width_dec = 2, |
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.uv_height_dec = 2, |
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}, { |
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.fourcc = V4L2_PIX_FMT_YVU420, |
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.bpp = 12, |
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.planar = true, |
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.uv_width_dec = 2, |
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.uv_height_dec = 2, |
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.uv_swapped = true, |
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}, { |
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.fourcc = V4L2_PIX_FMT_NV12, |
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.bpp = 12, |
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.planar = true, |
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.uv_width_dec = 2, |
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.uv_height_dec = 2, |
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.uv_packed = true, |
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}, { |
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.fourcc = V4L2_PIX_FMT_YUV422P, |
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.bpp = 16, |
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.planar = true, |
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.uv_width_dec = 2, |
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.uv_height_dec = 1, |
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}, { |
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.fourcc = V4L2_PIX_FMT_NV16, |
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.bpp = 16, |
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.planar = true, |
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.uv_width_dec = 2, |
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.uv_height_dec = 1, |
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.uv_packed = true, |
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}, |
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}; |
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static const struct ipu_image_pixfmt *get_format(u32 fourcc) |
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{ |
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const struct ipu_image_pixfmt *ret = NULL; |
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unsigned int i; |
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for (i = 0; i < ARRAY_SIZE(image_convert_formats); i++) { |
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if (image_convert_formats[i].fourcc == fourcc) { |
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ret = &image_convert_formats[i]; |
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break; |
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} |
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} |
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return ret; |
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} |
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static void dump_format(struct ipu_image_convert_ctx *ctx, |
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struct ipu_image_convert_image *ic_image) |
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{ |
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struct ipu_image_convert_chan *chan = ctx->chan; |
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struct ipu_image_convert_priv *priv = chan->priv; |
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dev_dbg(priv->ipu->dev, |
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"task %u: ctx %p: %s format: %dx%d (%dx%d tiles), %c%c%c%c\n", |
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chan->ic_task, ctx, |
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ic_image->type == IMAGE_CONVERT_OUT ? "Output" : "Input", |
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ic_image->base.pix.width, ic_image->base.pix.height, |
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ic_image->num_cols, ic_image->num_rows, |
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ic_image->fmt->fourcc & 0xff, |
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(ic_image->fmt->fourcc >> 8) & 0xff, |
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(ic_image->fmt->fourcc >> 16) & 0xff, |
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(ic_image->fmt->fourcc >> 24) & 0xff); |
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} |
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int ipu_image_convert_enum_format(int index, u32 *fourcc) |
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{ |
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const struct ipu_image_pixfmt *fmt; |
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if (index >= (int)ARRAY_SIZE(image_convert_formats)) |
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return -EINVAL; |
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/* Format found */ |
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fmt = &image_convert_formats[index]; |
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*fourcc = fmt->fourcc; |
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return 0; |
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} |
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EXPORT_SYMBOL_GPL(ipu_image_convert_enum_format); |
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static void free_dma_buf(struct ipu_image_convert_priv *priv, |
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struct ipu_image_convert_dma_buf *buf) |
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{ |
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if (buf->virt) |
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dma_free_coherent(priv->ipu->dev, |
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buf->len, buf->virt, buf->phys); |
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buf->virt = NULL; |
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buf->phys = 0; |
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} |
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static int alloc_dma_buf(struct ipu_image_convert_priv *priv, |
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struct ipu_image_convert_dma_buf *buf, |
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int size) |
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{ |
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buf->len = PAGE_ALIGN(size); |
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buf->virt = dma_alloc_coherent(priv->ipu->dev, buf->len, &buf->phys, |
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GFP_DMA | GFP_KERNEL); |
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if (!buf->virt) { |
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dev_err(priv->ipu->dev, "failed to alloc dma buffer\n"); |
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return -ENOMEM; |
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} |
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return 0; |
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} |
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static inline int num_stripes(int dim) |
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{ |
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return (dim - 1) / 1024 + 1; |
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} |
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/* |
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* Calculate downsizing coefficients, which are the same for all tiles, |
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* and initial bilinear resizing coefficients, which are used to find the |
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* best seam positions. |
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* Also determine the number of tiles necessary to guarantee that no tile |
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* is larger than 1024 pixels in either dimension at the output and between |
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* IC downsizing and main processing sections. |
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*/ |
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static int calc_image_resize_coefficients(struct ipu_image_convert_ctx *ctx, |
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struct ipu_image *in, |
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struct ipu_image *out) |
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{ |
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u32 downsized_width = in->rect.width; |
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u32 downsized_height = in->rect.height; |
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u32 downsize_coeff_v = 0; |
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u32 downsize_coeff_h = 0; |
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u32 resized_width = out->rect.width; |
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u32 resized_height = out->rect.height; |
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u32 resize_coeff_h; |
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u32 resize_coeff_v; |
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u32 cols; |
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u32 rows; |
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if (ipu_rot_mode_is_irt(ctx->rot_mode)) { |
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resized_width = out->rect.height; |
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resized_height = out->rect.width; |
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} |
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/* Do not let invalid input lead to an endless loop below */ |
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if (WARN_ON(resized_width == 0 || resized_height == 0)) |
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return -EINVAL; |
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while (downsized_width >= resized_width * 2) { |
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downsized_width >>= 1; |
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downsize_coeff_h++; |
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} |
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while (downsized_height >= resized_height * 2) { |
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downsized_height >>= 1; |
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downsize_coeff_v++; |
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} |
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|
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/* |
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* Calculate the bilinear resizing coefficients that could be used if |
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* we were converting with a single tile. The bottom right output pixel |
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* should sample as close as possible to the bottom right input pixel |
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* out of the decimator, but not overshoot it: |
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*/ |
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resize_coeff_h = 8192 * (downsized_width - 1) / (resized_width - 1); |
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resize_coeff_v = 8192 * (downsized_height - 1) / (resized_height - 1); |
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|
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/* |
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* Both the output of the IC downsizing section before being passed to |
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* the IC main processing section and the final output of the IC main |
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* processing section must be <= 1024 pixels in both dimensions. |
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*/ |
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cols = num_stripes(max_t(u32, downsized_width, resized_width)); |
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rows = num_stripes(max_t(u32, downsized_height, resized_height)); |
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|
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dev_dbg(ctx->chan->priv->ipu->dev, |
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"%s: hscale: >>%u, *8192/%u vscale: >>%u, *8192/%u, %ux%u tiles\n", |
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__func__, downsize_coeff_h, resize_coeff_h, downsize_coeff_v, |
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resize_coeff_v, cols, rows); |
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|
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if (downsize_coeff_h > 2 || downsize_coeff_v > 2 || |
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resize_coeff_h > 0x3fff || resize_coeff_v > 0x3fff) |
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return -EINVAL; |
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|
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ctx->downsize_coeff_h = downsize_coeff_h; |
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ctx->downsize_coeff_v = downsize_coeff_v; |
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ctx->image_resize_coeff_h = resize_coeff_h; |
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ctx->image_resize_coeff_v = resize_coeff_v; |
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ctx->in.num_cols = cols; |
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ctx->in.num_rows = rows; |
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return 0; |
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} |
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|
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#define round_closest(x, y) round_down((x) + (y)/2, (y)) |
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|
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/* |
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* Find the best aligned seam position for the given column / row index. |
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* Rotation and image offsets are out of scope. |
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* |
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* @index: column / row index, used to calculate valid interval |
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* @in_edge: input right / bottom edge |
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* @out_edge: output right / bottom edge |
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* @in_align: input alignment, either horizontal 8-byte line start address |
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* alignment, or pixel alignment due to image format |
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* @out_align: output alignment, either horizontal 8-byte line start address |
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* alignment, or pixel alignment due to image format or rotator |
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* block size |
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* @in_burst: horizontal input burst size in case of horizontal flip |
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* @out_burst: horizontal output burst size or rotator block size |
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* @downsize_coeff: downsizing section coefficient |
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* @resize_coeff: main processing section resizing coefficient |
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* @_in_seam: aligned input seam position return value |
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* @_out_seam: aligned output seam position return value |
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*/ |
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static void find_best_seam(struct ipu_image_convert_ctx *ctx, |
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unsigned int index, |
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unsigned int in_edge, |
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unsigned int out_edge, |
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unsigned int in_align, |
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unsigned int out_align, |
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unsigned int in_burst, |
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unsigned int out_burst, |
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unsigned int downsize_coeff, |
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unsigned int resize_coeff, |
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u32 *_in_seam, |
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u32 *_out_seam) |
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{ |
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struct device *dev = ctx->chan->priv->ipu->dev; |
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unsigned int out_pos; |
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/* Input / output seam position candidates */ |
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unsigned int out_seam = 0; |
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unsigned int in_seam = 0; |
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unsigned int min_diff = UINT_MAX; |
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unsigned int out_start; |
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unsigned int out_end; |
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unsigned int in_start; |
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unsigned int in_end; |
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|
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/* Start within 1024 pixels of the right / bottom edge */ |
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out_start = max_t(int, index * out_align, out_edge - 1024); |
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/* End before having to add more columns to the left / rows above */ |
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out_end = min_t(unsigned int, out_edge, index * 1024 + 1); |
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|
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/* |
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* Limit input seam position to make sure that the downsized input tile |
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* to the right or bottom does not exceed 1024 pixels. |
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*/ |
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in_start = max_t(int, index * in_align, |
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in_edge - (1024 << downsize_coeff)); |
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in_end = min_t(unsigned int, in_edge, |
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index * (1024 << downsize_coeff) + 1); |
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|
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/* |
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* Output tiles must start at a multiple of 8 bytes horizontally and |
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* possibly at an even line horizontally depending on the pixel format. |
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* Only consider output aligned positions for the seam. |
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*/ |
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out_start = round_up(out_start, out_align); |
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for (out_pos = out_start; out_pos < out_end; out_pos += out_align) { |
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unsigned int in_pos; |
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unsigned int in_pos_aligned; |
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unsigned int in_pos_rounded; |
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unsigned int abs_diff; |
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|
|
/* |
|
* Tiles in the right row / bottom column may not be allowed to |
|
* overshoot horizontally / vertically. out_burst may be the |
|
* actual DMA burst size, or the rotator block size. |
|
*/ |
|
if ((out_burst > 1) && (out_edge - out_pos) % out_burst) |
|
continue; |
|
|
|
/* |
|
* Input sample position, corresponding to out_pos, 19.13 fixed |
|
* point. |
|
*/ |
|
in_pos = (out_pos * resize_coeff) << downsize_coeff; |
|
/* |
|
* The closest input sample position that we could actually |
|
* start the input tile at, 19.13 fixed point. |
|
*/ |
|
in_pos_aligned = round_closest(in_pos, 8192U * in_align); |
|
/* Convert 19.13 fixed point to integer */ |
|
in_pos_rounded = in_pos_aligned / 8192U; |
|
|
|
if (in_pos_rounded < in_start) |
|
continue; |
|
if (in_pos_rounded >= in_end) |
|
break; |
|
|
|
if ((in_burst > 1) && |
|
(in_edge - in_pos_rounded) % in_burst) |
|
continue; |
|
|
|
if (in_pos < in_pos_aligned) |
|
abs_diff = in_pos_aligned - in_pos; |
|
else |
|
abs_diff = in_pos - in_pos_aligned; |
|
|
|
if (abs_diff < min_diff) { |
|
in_seam = in_pos_rounded; |
|
out_seam = out_pos; |
|
min_diff = abs_diff; |
|
} |
|
} |
|
|
|
*_out_seam = out_seam; |
|
*_in_seam = in_seam; |
|
|
|
dev_dbg(dev, "%s: out_seam %u(%u) in [%u, %u], in_seam %u(%u) in [%u, %u] diff %u.%03u\n", |
|
__func__, out_seam, out_align, out_start, out_end, |
|
in_seam, in_align, in_start, in_end, min_diff / 8192, |
|
DIV_ROUND_CLOSEST(min_diff % 8192 * 1000, 8192)); |
|
} |
|
|
|
/* |
|
* Tile left edges are required to be aligned to multiples of 8 bytes |
|
* by the IDMAC. |
|
*/ |
|
static inline u32 tile_left_align(const struct ipu_image_pixfmt *fmt) |
|
{ |
|
if (fmt->planar) |
|
return fmt->uv_packed ? 8 : 8 * fmt->uv_width_dec; |
|
else |
|
return fmt->bpp == 32 ? 2 : fmt->bpp == 16 ? 4 : 8; |
|
} |
|
|
|
/* |
|
* Tile top edge alignment is only limited by chroma subsampling. |
|
*/ |
|
static inline u32 tile_top_align(const struct ipu_image_pixfmt *fmt) |
|
{ |
|
return fmt->uv_height_dec > 1 ? 2 : 1; |
|
} |
|
|
|
static inline u32 tile_width_align(enum ipu_image_convert_type type, |
|
const struct ipu_image_pixfmt *fmt, |
|
enum ipu_rotate_mode rot_mode) |
|
{ |
|
if (type == IMAGE_CONVERT_IN) { |
|
/* |
|
* The IC burst reads 8 pixels at a time. Reading beyond the |
|
* end of the line is usually acceptable. Those pixels are |
|
* ignored, unless the IC has to write the scaled line in |
|
* reverse. |
|
*/ |
|
return (!ipu_rot_mode_is_irt(rot_mode) && |
|
(rot_mode & IPU_ROT_BIT_HFLIP)) ? 8 : 2; |
|
} |
|
|
|
/* |
|
* Align to 16x16 pixel blocks for planar 4:2:0 chroma subsampled |
|
* formats to guarantee 8-byte aligned line start addresses in the |
|
* chroma planes when IRT is used. Align to 8x8 pixel IRT block size |
|
* for all other formats. |
|
*/ |
|
return (ipu_rot_mode_is_irt(rot_mode) && |
|
fmt->planar && !fmt->uv_packed) ? |
|
8 * fmt->uv_width_dec : 8; |
|
} |
|
|
|
static inline u32 tile_height_align(enum ipu_image_convert_type type, |
|
const struct ipu_image_pixfmt *fmt, |
|
enum ipu_rotate_mode rot_mode) |
|
{ |
|
if (type == IMAGE_CONVERT_IN || !ipu_rot_mode_is_irt(rot_mode)) |
|
return 2; |
|
|
|
/* |
|
* Align to 16x16 pixel blocks for planar 4:2:0 chroma subsampled |
|
* formats to guarantee 8-byte aligned line start addresses in the |
|
* chroma planes when IRT is used. Align to 8x8 pixel IRT block size |
|
* for all other formats. |
|
*/ |
|
return (fmt->planar && !fmt->uv_packed) ? 8 * fmt->uv_width_dec : 8; |
|
} |
|
|
|
/* |
|
* Fill in left position and width and for all tiles in an input column, and |
|
* for all corresponding output tiles. If the 90° rotator is used, the output |
|
* tiles are in a row, and output tile top position and height are set. |
|
*/ |
|
static void fill_tile_column(struct ipu_image_convert_ctx *ctx, |
|
unsigned int col, |
|
struct ipu_image_convert_image *in, |
|
unsigned int in_left, unsigned int in_width, |
|
struct ipu_image_convert_image *out, |
|
unsigned int out_left, unsigned int out_width) |
|
{ |
|
unsigned int row, tile_idx; |
|
struct ipu_image_tile *in_tile, *out_tile; |
|
|
|
for (row = 0; row < in->num_rows; row++) { |
|
tile_idx = in->num_cols * row + col; |
|
in_tile = &in->tile[tile_idx]; |
|
out_tile = &out->tile[ctx->out_tile_map[tile_idx]]; |
|
|
|
in_tile->left = in_left; |
|
in_tile->width = in_width; |
|
|
|
if (ipu_rot_mode_is_irt(ctx->rot_mode)) { |
|
out_tile->top = out_left; |
|
out_tile->height = out_width; |
|
} else { |
|
out_tile->left = out_left; |
|
out_tile->width = out_width; |
|
} |
|
} |
|
} |
|
|
|
/* |
|
* Fill in top position and height and for all tiles in an input row, and |
|
* for all corresponding output tiles. If the 90° rotator is used, the output |
|
* tiles are in a column, and output tile left position and width are set. |
|
*/ |
|
static void fill_tile_row(struct ipu_image_convert_ctx *ctx, unsigned int row, |
|
struct ipu_image_convert_image *in, |
|
unsigned int in_top, unsigned int in_height, |
|
struct ipu_image_convert_image *out, |
|
unsigned int out_top, unsigned int out_height) |
|
{ |
|
unsigned int col, tile_idx; |
|
struct ipu_image_tile *in_tile, *out_tile; |
|
|
|
for (col = 0; col < in->num_cols; col++) { |
|
tile_idx = in->num_cols * row + col; |
|
in_tile = &in->tile[tile_idx]; |
|
out_tile = &out->tile[ctx->out_tile_map[tile_idx]]; |
|
|
|
in_tile->top = in_top; |
|
in_tile->height = in_height; |
|
|
|
if (ipu_rot_mode_is_irt(ctx->rot_mode)) { |
|
out_tile->left = out_top; |
|
out_tile->width = out_height; |
|
} else { |
|
out_tile->top = out_top; |
|
out_tile->height = out_height; |
|
} |
|
} |
|
} |
|
|
|
/* |
|
* Find the best horizontal and vertical seam positions to split into tiles. |
|
* Minimize the fractional part of the input sampling position for the |
|
* top / left pixels of each tile. |
|
*/ |
|
static void find_seams(struct ipu_image_convert_ctx *ctx, |
|
struct ipu_image_convert_image *in, |
|
struct ipu_image_convert_image *out) |
|
{ |
|
struct device *dev = ctx->chan->priv->ipu->dev; |
|
unsigned int resized_width = out->base.rect.width; |
|
unsigned int resized_height = out->base.rect.height; |
|
unsigned int col; |
|
unsigned int row; |
|
unsigned int in_left_align = tile_left_align(in->fmt); |
|
unsigned int in_top_align = tile_top_align(in->fmt); |
|
unsigned int out_left_align = tile_left_align(out->fmt); |
|
unsigned int out_top_align = tile_top_align(out->fmt); |
|
unsigned int out_width_align = tile_width_align(out->type, out->fmt, |
|
ctx->rot_mode); |
|
unsigned int out_height_align = tile_height_align(out->type, out->fmt, |
|
ctx->rot_mode); |
|
unsigned int in_right = in->base.rect.width; |
|
unsigned int in_bottom = in->base.rect.height; |
|
unsigned int out_right = out->base.rect.width; |
|
unsigned int out_bottom = out->base.rect.height; |
|
unsigned int flipped_out_left; |
|
unsigned int flipped_out_top; |
|
|
|
if (ipu_rot_mode_is_irt(ctx->rot_mode)) { |
|
/* Switch width/height and align top left to IRT block size */ |
|
resized_width = out->base.rect.height; |
|
resized_height = out->base.rect.width; |
|
out_left_align = out_height_align; |
|
out_top_align = out_width_align; |
|
out_width_align = out_left_align; |
|
out_height_align = out_top_align; |
|
out_right = out->base.rect.height; |
|
out_bottom = out->base.rect.width; |
|
} |
|
|
|
for (col = in->num_cols - 1; col > 0; col--) { |
|
bool allow_in_overshoot = ipu_rot_mode_is_irt(ctx->rot_mode) || |
|
!(ctx->rot_mode & IPU_ROT_BIT_HFLIP); |
|
bool allow_out_overshoot = (col < in->num_cols - 1) && |
|
!(ctx->rot_mode & IPU_ROT_BIT_HFLIP); |
|
unsigned int in_left; |
|
unsigned int out_left; |
|
|
|
/* |
|
* Align input width to burst length if the scaling step flips |
|
* horizontally. |
|
*/ |
|
|
|
find_best_seam(ctx, col, |
|
in_right, out_right, |
|
in_left_align, out_left_align, |
|
allow_in_overshoot ? 1 : 8 /* burst length */, |
|
allow_out_overshoot ? 1 : out_width_align, |
|
ctx->downsize_coeff_h, ctx->image_resize_coeff_h, |
|
&in_left, &out_left); |
|
|
|
if (ctx->rot_mode & IPU_ROT_BIT_HFLIP) |
|
flipped_out_left = resized_width - out_right; |
|
else |
|
flipped_out_left = out_left; |
|
|
|
fill_tile_column(ctx, col, in, in_left, in_right - in_left, |
|
out, flipped_out_left, out_right - out_left); |
|
|
|
dev_dbg(dev, "%s: col %u: %u, %u -> %u, %u\n", __func__, col, |
|
in_left, in_right - in_left, |
|
flipped_out_left, out_right - out_left); |
|
|
|
in_right = in_left; |
|
out_right = out_left; |
|
} |
|
|
|
flipped_out_left = (ctx->rot_mode & IPU_ROT_BIT_HFLIP) ? |
|
resized_width - out_right : 0; |
|
|
|
fill_tile_column(ctx, 0, in, 0, in_right, |
|
out, flipped_out_left, out_right); |
|
|
|
dev_dbg(dev, "%s: col 0: 0, %u -> %u, %u\n", __func__, |
|
in_right, flipped_out_left, out_right); |
|
|
|
for (row = in->num_rows - 1; row > 0; row--) { |
|
bool allow_overshoot = row < in->num_rows - 1; |
|
unsigned int in_top; |
|
unsigned int out_top; |
|
|
|
find_best_seam(ctx, row, |
|
in_bottom, out_bottom, |
|
in_top_align, out_top_align, |
|
1, allow_overshoot ? 1 : out_height_align, |
|
ctx->downsize_coeff_v, ctx->image_resize_coeff_v, |
|
&in_top, &out_top); |
|
|
|
if ((ctx->rot_mode & IPU_ROT_BIT_VFLIP) ^ |
|
ipu_rot_mode_is_irt(ctx->rot_mode)) |
|
flipped_out_top = resized_height - out_bottom; |
|
else |
|
flipped_out_top = out_top; |
|
|
|
fill_tile_row(ctx, row, in, in_top, in_bottom - in_top, |
|
out, flipped_out_top, out_bottom - out_top); |
|
|
|
dev_dbg(dev, "%s: row %u: %u, %u -> %u, %u\n", __func__, row, |
|
in_top, in_bottom - in_top, |
|
flipped_out_top, out_bottom - out_top); |
|
|
|
in_bottom = in_top; |
|
out_bottom = out_top; |
|
} |
|
|
|
if ((ctx->rot_mode & IPU_ROT_BIT_VFLIP) ^ |
|
ipu_rot_mode_is_irt(ctx->rot_mode)) |
|
flipped_out_top = resized_height - out_bottom; |
|
else |
|
flipped_out_top = 0; |
|
|
|
fill_tile_row(ctx, 0, in, 0, in_bottom, |
|
out, flipped_out_top, out_bottom); |
|
|
|
dev_dbg(dev, "%s: row 0: 0, %u -> %u, %u\n", __func__, |
|
in_bottom, flipped_out_top, out_bottom); |
|
} |
|
|
|
static int calc_tile_dimensions(struct ipu_image_convert_ctx *ctx, |
|
struct ipu_image_convert_image *image) |
|
{ |
|
struct ipu_image_convert_chan *chan = ctx->chan; |
|
struct ipu_image_convert_priv *priv = chan->priv; |
|
unsigned int max_width = 1024; |
|
unsigned int max_height = 1024; |
|
unsigned int i; |
|
|
|
if (image->type == IMAGE_CONVERT_IN) { |
|
/* Up to 4096x4096 input tile size */ |
|
max_width <<= ctx->downsize_coeff_h; |
|
max_height <<= ctx->downsize_coeff_v; |
|
} |
|
|
|
for (i = 0; i < ctx->num_tiles; i++) { |
|
struct ipu_image_tile *tile; |
|
const unsigned int row = i / image->num_cols; |
|
const unsigned int col = i % image->num_cols; |
|
|
|
if (image->type == IMAGE_CONVERT_OUT) |
|
tile = &image->tile[ctx->out_tile_map[i]]; |
|
else |
|
tile = &image->tile[i]; |
|
|
|
tile->size = ((tile->height * image->fmt->bpp) >> 3) * |
|
tile->width; |
|
|
|
if (image->fmt->planar) { |
|
tile->stride = tile->width; |
|
tile->rot_stride = tile->height; |
|
} else { |
|
tile->stride = |
|
(image->fmt->bpp * tile->width) >> 3; |
|
tile->rot_stride = |
|
(image->fmt->bpp * tile->height) >> 3; |
|
} |
|
|
|
dev_dbg(priv->ipu->dev, |
|
"task %u: ctx %p: %s@[%u,%u]: %ux%u@%u,%u\n", |
|
chan->ic_task, ctx, |
|
image->type == IMAGE_CONVERT_IN ? "Input" : "Output", |
|
row, col, |
|
tile->width, tile->height, tile->left, tile->top); |
|
|
|
if (!tile->width || tile->width > max_width || |
|
!tile->height || tile->height > max_height) { |
|
dev_err(priv->ipu->dev, "invalid %s tile size: %ux%u\n", |
|
image->type == IMAGE_CONVERT_IN ? "input" : |
|
"output", tile->width, tile->height); |
|
return -EINVAL; |
|
} |
|
} |
|
|
|
return 0; |
|
} |
|
|
|
/* |
|
* Use the rotation transformation to find the tile coordinates |
|
* (row, col) of a tile in the destination frame that corresponds |
|
* to the given tile coordinates of a source frame. The destination |
|
* coordinate is then converted to a tile index. |
|
*/ |
|
static int transform_tile_index(struct ipu_image_convert_ctx *ctx, |
|
int src_row, int src_col) |
|
{ |
|
struct ipu_image_convert_chan *chan = ctx->chan; |
|
struct ipu_image_convert_priv *priv = chan->priv; |
|
struct ipu_image_convert_image *s_image = &ctx->in; |
|
struct ipu_image_convert_image *d_image = &ctx->out; |
|
int dst_row, dst_col; |
|
|
|
/* with no rotation it's a 1:1 mapping */ |
|
if (ctx->rot_mode == IPU_ROTATE_NONE) |
|
return src_row * s_image->num_cols + src_col; |
|
|
|
/* |
|
* before doing the transform, first we have to translate |
|
* source row,col for an origin in the center of s_image |
|
*/ |
|
src_row = src_row * 2 - (s_image->num_rows - 1); |
|
src_col = src_col * 2 - (s_image->num_cols - 1); |
|
|
|
/* do the rotation transform */ |
|
if (ctx->rot_mode & IPU_ROT_BIT_90) { |
|
dst_col = -src_row; |
|
dst_row = src_col; |
|
} else { |
|
dst_col = src_col; |
|
dst_row = src_row; |
|
} |
|
|
|
/* apply flip */ |
|
if (ctx->rot_mode & IPU_ROT_BIT_HFLIP) |
|
dst_col = -dst_col; |
|
if (ctx->rot_mode & IPU_ROT_BIT_VFLIP) |
|
dst_row = -dst_row; |
|
|
|
dev_dbg(priv->ipu->dev, "task %u: ctx %p: [%d,%d] --> [%d,%d]\n", |
|
chan->ic_task, ctx, src_col, src_row, dst_col, dst_row); |
|
|
|
/* |
|
* finally translate dest row,col using an origin in upper |
|
* left of d_image |
|
*/ |
|
dst_row += d_image->num_rows - 1; |
|
dst_col += d_image->num_cols - 1; |
|
dst_row /= 2; |
|
dst_col /= 2; |
|
|
|
return dst_row * d_image->num_cols + dst_col; |
|
} |
|
|
|
/* |
|
* Fill the out_tile_map[] with transformed destination tile indeces. |
|
*/ |
|
static void calc_out_tile_map(struct ipu_image_convert_ctx *ctx) |
|
{ |
|
struct ipu_image_convert_image *s_image = &ctx->in; |
|
unsigned int row, col, tile = 0; |
|
|
|
for (row = 0; row < s_image->num_rows; row++) { |
|
for (col = 0; col < s_image->num_cols; col++) { |
|
ctx->out_tile_map[tile] = |
|
transform_tile_index(ctx, row, col); |
|
tile++; |
|
} |
|
} |
|
} |
|
|
|
static int calc_tile_offsets_planar(struct ipu_image_convert_ctx *ctx, |
|
struct ipu_image_convert_image *image) |
|
{ |
|
struct ipu_image_convert_chan *chan = ctx->chan; |
|
struct ipu_image_convert_priv *priv = chan->priv; |
|
const struct ipu_image_pixfmt *fmt = image->fmt; |
|
unsigned int row, col, tile = 0; |
|
u32 H, top, y_stride, uv_stride; |
|
u32 uv_row_off, uv_col_off, uv_off, u_off, v_off, tmp; |
|
u32 y_row_off, y_col_off, y_off; |
|
u32 y_size, uv_size; |
|
|
|
/* setup some convenience vars */ |
|
H = image->base.pix.height; |
|
|
|
y_stride = image->stride; |
|
uv_stride = y_stride / fmt->uv_width_dec; |
|
if (fmt->uv_packed) |
|
uv_stride *= 2; |
|
|
|
y_size = H * y_stride; |
|
uv_size = y_size / (fmt->uv_width_dec * fmt->uv_height_dec); |
|
|
|
for (row = 0; row < image->num_rows; row++) { |
|
top = image->tile[tile].top; |
|
y_row_off = top * y_stride; |
|
uv_row_off = (top * uv_stride) / fmt->uv_height_dec; |
|
|
|
for (col = 0; col < image->num_cols; col++) { |
|
y_col_off = image->tile[tile].left; |
|
uv_col_off = y_col_off / fmt->uv_width_dec; |
|
if (fmt->uv_packed) |
|
uv_col_off *= 2; |
|
|
|
y_off = y_row_off + y_col_off; |
|
uv_off = uv_row_off + uv_col_off; |
|
|
|
u_off = y_size - y_off + uv_off; |
|
v_off = (fmt->uv_packed) ? 0 : u_off + uv_size; |
|
if (fmt->uv_swapped) { |
|
tmp = u_off; |
|
u_off = v_off; |
|
v_off = tmp; |
|
} |
|
|
|
image->tile[tile].offset = y_off; |
|
image->tile[tile].u_off = u_off; |
|
image->tile[tile++].v_off = v_off; |
|
|
|
if ((y_off & 0x7) || (u_off & 0x7) || (v_off & 0x7)) { |
|
dev_err(priv->ipu->dev, |
|
"task %u: ctx %p: %s@[%d,%d]: " |
|
"y_off %08x, u_off %08x, v_off %08x\n", |
|
chan->ic_task, ctx, |
|
image->type == IMAGE_CONVERT_IN ? |
|
"Input" : "Output", row, col, |
|
y_off, u_off, v_off); |
|
return -EINVAL; |
|
} |
|
} |
|
} |
|
|
|
return 0; |
|
} |
|
|
|
static int calc_tile_offsets_packed(struct ipu_image_convert_ctx *ctx, |
|
struct ipu_image_convert_image *image) |
|
{ |
|
struct ipu_image_convert_chan *chan = ctx->chan; |
|
struct ipu_image_convert_priv *priv = chan->priv; |
|
const struct ipu_image_pixfmt *fmt = image->fmt; |
|
unsigned int row, col, tile = 0; |
|
u32 bpp, stride, offset; |
|
u32 row_off, col_off; |
|
|
|
/* setup some convenience vars */ |
|
stride = image->stride; |
|
bpp = fmt->bpp; |
|
|
|
for (row = 0; row < image->num_rows; row++) { |
|
row_off = image->tile[tile].top * stride; |
|
|
|
for (col = 0; col < image->num_cols; col++) { |
|
col_off = (image->tile[tile].left * bpp) >> 3; |
|
|
|
offset = row_off + col_off; |
|
|
|
image->tile[tile].offset = offset; |
|
image->tile[tile].u_off = 0; |
|
image->tile[tile++].v_off = 0; |
|
|
|
if (offset & 0x7) { |
|
dev_err(priv->ipu->dev, |
|
"task %u: ctx %p: %s@[%d,%d]: " |
|
"phys %08x\n", |
|
chan->ic_task, ctx, |
|
image->type == IMAGE_CONVERT_IN ? |
|
"Input" : "Output", row, col, |
|
row_off + col_off); |
|
return -EINVAL; |
|
} |
|
} |
|
} |
|
|
|
return 0; |
|
} |
|
|
|
static int calc_tile_offsets(struct ipu_image_convert_ctx *ctx, |
|
struct ipu_image_convert_image *image) |
|
{ |
|
if (image->fmt->planar) |
|
return calc_tile_offsets_planar(ctx, image); |
|
|
|
return calc_tile_offsets_packed(ctx, image); |
|
} |
|
|
|
/* |
|
* Calculate the resizing ratio for the IC main processing section given input |
|
* size, fixed downsizing coefficient, and output size. |
|
* Either round to closest for the next tile's first pixel to minimize seams |
|
* and distortion (for all but right column / bottom row), or round down to |
|
* avoid sampling beyond the edges of the input image for this tile's last |
|
* pixel. |
|
* Returns the resizing coefficient, resizing ratio is 8192.0 / resize_coeff. |
|
*/ |
|
static u32 calc_resize_coeff(u32 input_size, u32 downsize_coeff, |
|
u32 output_size, bool allow_overshoot) |
|
{ |
|
u32 downsized = input_size >> downsize_coeff; |
|
|
|
if (allow_overshoot) |
|
return DIV_ROUND_CLOSEST(8192 * downsized, output_size); |
|
else |
|
return 8192 * (downsized - 1) / (output_size - 1); |
|
} |
|
|
|
/* |
|
* Slightly modify resize coefficients per tile to hide the bilinear |
|
* interpolator reset at tile borders, shifting the right / bottom edge |
|
* by up to a half input pixel. This removes noticeable seams between |
|
* tiles at higher upscaling factors. |
|
*/ |
|
static void calc_tile_resize_coefficients(struct ipu_image_convert_ctx *ctx) |
|
{ |
|
struct ipu_image_convert_chan *chan = ctx->chan; |
|
struct ipu_image_convert_priv *priv = chan->priv; |
|
struct ipu_image_tile *in_tile, *out_tile; |
|
unsigned int col, row, tile_idx; |
|
unsigned int last_output; |
|
|
|
for (col = 0; col < ctx->in.num_cols; col++) { |
|
bool closest = (col < ctx->in.num_cols - 1) && |
|
!(ctx->rot_mode & IPU_ROT_BIT_HFLIP); |
|
u32 resized_width; |
|
u32 resize_coeff_h; |
|
u32 in_width; |
|
|
|
tile_idx = col; |
|
in_tile = &ctx->in.tile[tile_idx]; |
|
out_tile = &ctx->out.tile[ctx->out_tile_map[tile_idx]]; |
|
|
|
if (ipu_rot_mode_is_irt(ctx->rot_mode)) |
|
resized_width = out_tile->height; |
|
else |
|
resized_width = out_tile->width; |
|
|
|
resize_coeff_h = calc_resize_coeff(in_tile->width, |
|
ctx->downsize_coeff_h, |
|
resized_width, closest); |
|
|
|
dev_dbg(priv->ipu->dev, "%s: column %u hscale: *8192/%u\n", |
|
__func__, col, resize_coeff_h); |
|
|
|
/* |
|
* With the horizontal scaling factor known, round up resized |
|
* width (output width or height) to burst size. |
|
*/ |
|
resized_width = round_up(resized_width, 8); |
|
|
|
/* |
|
* Calculate input width from the last accessed input pixel |
|
* given resized width and scaling coefficients. Round up to |
|
* burst size. |
|
*/ |
|
last_output = resized_width - 1; |
|
if (closest && ((last_output * resize_coeff_h) % 8192)) |
|
last_output++; |
|
in_width = round_up( |
|
(DIV_ROUND_UP(last_output * resize_coeff_h, 8192) + 1) |
|
<< ctx->downsize_coeff_h, 8); |
|
|
|
for (row = 0; row < ctx->in.num_rows; row++) { |
|
tile_idx = row * ctx->in.num_cols + col; |
|
in_tile = &ctx->in.tile[tile_idx]; |
|
out_tile = &ctx->out.tile[ctx->out_tile_map[tile_idx]]; |
|
|
|
if (ipu_rot_mode_is_irt(ctx->rot_mode)) |
|
out_tile->height = resized_width; |
|
else |
|
out_tile->width = resized_width; |
|
|
|
in_tile->width = in_width; |
|
} |
|
|
|
ctx->resize_coeffs_h[col] = resize_coeff_h; |
|
} |
|
|
|
for (row = 0; row < ctx->in.num_rows; row++) { |
|
bool closest = (row < ctx->in.num_rows - 1) && |
|
!(ctx->rot_mode & IPU_ROT_BIT_VFLIP); |
|
u32 resized_height; |
|
u32 resize_coeff_v; |
|
u32 in_height; |
|
|
|
tile_idx = row * ctx->in.num_cols; |
|
in_tile = &ctx->in.tile[tile_idx]; |
|
out_tile = &ctx->out.tile[ctx->out_tile_map[tile_idx]]; |
|
|
|
if (ipu_rot_mode_is_irt(ctx->rot_mode)) |
|
resized_height = out_tile->width; |
|
else |
|
resized_height = out_tile->height; |
|
|
|
resize_coeff_v = calc_resize_coeff(in_tile->height, |
|
ctx->downsize_coeff_v, |
|
resized_height, closest); |
|
|
|
dev_dbg(priv->ipu->dev, "%s: row %u vscale: *8192/%u\n", |
|
__func__, row, resize_coeff_v); |
|
|
|
/* |
|
* With the vertical scaling factor known, round up resized |
|
* height (output width or height) to IDMAC limitations. |
|
*/ |
|
resized_height = round_up(resized_height, 2); |
|
|
|
/* |
|
* Calculate input width from the last accessed input pixel |
|
* given resized height and scaling coefficients. Align to |
|
* IDMAC restrictions. |
|
*/ |
|
last_output = resized_height - 1; |
|
if (closest && ((last_output * resize_coeff_v) % 8192)) |
|
last_output++; |
|
in_height = round_up( |
|
(DIV_ROUND_UP(last_output * resize_coeff_v, 8192) + 1) |
|
<< ctx->downsize_coeff_v, 2); |
|
|
|
for (col = 0; col < ctx->in.num_cols; col++) { |
|
tile_idx = row * ctx->in.num_cols + col; |
|
in_tile = &ctx->in.tile[tile_idx]; |
|
out_tile = &ctx->out.tile[ctx->out_tile_map[tile_idx]]; |
|
|
|
if (ipu_rot_mode_is_irt(ctx->rot_mode)) |
|
out_tile->width = resized_height; |
|
else |
|
out_tile->height = resized_height; |
|
|
|
in_tile->height = in_height; |
|
} |
|
|
|
ctx->resize_coeffs_v[row] = resize_coeff_v; |
|
} |
|
} |
|
|
|
/* |
|
* return the number of runs in given queue (pending_q or done_q) |
|
* for this context. hold irqlock when calling. |
|
*/ |
|
static int get_run_count(struct ipu_image_convert_ctx *ctx, |
|
struct list_head *q) |
|
{ |
|
struct ipu_image_convert_run *run; |
|
int count = 0; |
|
|
|
lockdep_assert_held(&ctx->chan->irqlock); |
|
|
|
list_for_each_entry(run, q, list) { |
|
if (run->ctx == ctx) |
|
count++; |
|
} |
|
|
|
return count; |
|
} |
|
|
|
static void convert_stop(struct ipu_image_convert_run *run) |
|
{ |
|
struct ipu_image_convert_ctx *ctx = run->ctx; |
|
struct ipu_image_convert_chan *chan = ctx->chan; |
|
struct ipu_image_convert_priv *priv = chan->priv; |
|
|
|
dev_dbg(priv->ipu->dev, "%s: task %u: stopping ctx %p run %p\n", |
|
__func__, chan->ic_task, ctx, run); |
|
|
|
/* disable IC tasks and the channels */ |
|
ipu_ic_task_disable(chan->ic); |
|
ipu_idmac_disable_channel(chan->in_chan); |
|
ipu_idmac_disable_channel(chan->out_chan); |
|
|
|
if (ipu_rot_mode_is_irt(ctx->rot_mode)) { |
|
ipu_idmac_disable_channel(chan->rotation_in_chan); |
|
ipu_idmac_disable_channel(chan->rotation_out_chan); |
|
ipu_idmac_unlink(chan->out_chan, chan->rotation_in_chan); |
|
} |
|
|
|
ipu_ic_disable(chan->ic); |
|
} |
|
|
|
static void init_idmac_channel(struct ipu_image_convert_ctx *ctx, |
|
struct ipuv3_channel *channel, |
|
struct ipu_image_convert_image *image, |
|
enum ipu_rotate_mode rot_mode, |
|
bool rot_swap_width_height, |
|
unsigned int tile) |
|
{ |
|
struct ipu_image_convert_chan *chan = ctx->chan; |
|
unsigned int burst_size; |
|
u32 width, height, stride; |
|
dma_addr_t addr0, addr1 = 0; |
|
struct ipu_image tile_image; |
|
unsigned int tile_idx[2]; |
|
|
|
if (image->type == IMAGE_CONVERT_OUT) { |
|
tile_idx[0] = ctx->out_tile_map[tile]; |
|
tile_idx[1] = ctx->out_tile_map[1]; |
|
} else { |
|
tile_idx[0] = tile; |
|
tile_idx[1] = 1; |
|
} |
|
|
|
if (rot_swap_width_height) { |
|
width = image->tile[tile_idx[0]].height; |
|
height = image->tile[tile_idx[0]].width; |
|
stride = image->tile[tile_idx[0]].rot_stride; |
|
addr0 = ctx->rot_intermediate[0].phys; |
|
if (ctx->double_buffering) |
|
addr1 = ctx->rot_intermediate[1].phys; |
|
} else { |
|
width = image->tile[tile_idx[0]].width; |
|
height = image->tile[tile_idx[0]].height; |
|
stride = image->stride; |
|
addr0 = image->base.phys0 + |
|
image->tile[tile_idx[0]].offset; |
|
if (ctx->double_buffering) |
|
addr1 = image->base.phys0 + |
|
image->tile[tile_idx[1]].offset; |
|
} |
|
|
|
ipu_cpmem_zero(channel); |
|
|
|
memset(&tile_image, 0, sizeof(tile_image)); |
|
tile_image.pix.width = tile_image.rect.width = width; |
|
tile_image.pix.height = tile_image.rect.height = height; |
|
tile_image.pix.bytesperline = stride; |
|
tile_image.pix.pixelformat = image->fmt->fourcc; |
|
tile_image.phys0 = addr0; |
|
tile_image.phys1 = addr1; |
|
if (image->fmt->planar && !rot_swap_width_height) { |
|
tile_image.u_offset = image->tile[tile_idx[0]].u_off; |
|
tile_image.v_offset = image->tile[tile_idx[0]].v_off; |
|
} |
|
|
|
ipu_cpmem_set_image(channel, &tile_image); |
|
|
|
if (rot_mode) |
|
ipu_cpmem_set_rotation(channel, rot_mode); |
|
|
|
/* |
|
* Skip writing U and V components to odd rows in the output |
|
* channels for planar 4:2:0. |
|
*/ |
|
if ((channel == chan->out_chan || |
|
channel == chan->rotation_out_chan) && |
|
image->fmt->planar && image->fmt->uv_height_dec == 2) |
|
ipu_cpmem_skip_odd_chroma_rows(channel); |
|
|
|
if (channel == chan->rotation_in_chan || |
|
channel == chan->rotation_out_chan) { |
|
burst_size = 8; |
|
ipu_cpmem_set_block_mode(channel); |
|
} else |
|
burst_size = (width % 16) ? 8 : 16; |
|
|
|
ipu_cpmem_set_burstsize(channel, burst_size); |
|
|
|
ipu_ic_task_idma_init(chan->ic, channel, width, height, |
|
burst_size, rot_mode); |
|
|
|
/* |
|
* Setting a non-zero AXI ID collides with the PRG AXI snooping, so |
|
* only do this when there is no PRG present. |
|
*/ |
|
if (!channel->ipu->prg_priv) |
|
ipu_cpmem_set_axi_id(channel, 1); |
|
|
|
ipu_idmac_set_double_buffer(channel, ctx->double_buffering); |
|
} |
|
|
|
static int convert_start(struct ipu_image_convert_run *run, unsigned int tile) |
|
{ |
|
struct ipu_image_convert_ctx *ctx = run->ctx; |
|
struct ipu_image_convert_chan *chan = ctx->chan; |
|
struct ipu_image_convert_priv *priv = chan->priv; |
|
struct ipu_image_convert_image *s_image = &ctx->in; |
|
struct ipu_image_convert_image *d_image = &ctx->out; |
|
unsigned int dst_tile = ctx->out_tile_map[tile]; |
|
unsigned int dest_width, dest_height; |
|
unsigned int col, row; |
|
u32 rsc; |
|
int ret; |
|
|
|
dev_dbg(priv->ipu->dev, "%s: task %u: starting ctx %p run %p tile %u -> %u\n", |
|
__func__, chan->ic_task, ctx, run, tile, dst_tile); |
|
|
|
/* clear EOF irq mask */ |
|
ctx->eof_mask = 0; |
|
|
|
if (ipu_rot_mode_is_irt(ctx->rot_mode)) { |
|
/* swap width/height for resizer */ |
|
dest_width = d_image->tile[dst_tile].height; |
|
dest_height = d_image->tile[dst_tile].width; |
|
} else { |
|
dest_width = d_image->tile[dst_tile].width; |
|
dest_height = d_image->tile[dst_tile].height; |
|
} |
|
|
|
row = tile / s_image->num_cols; |
|
col = tile % s_image->num_cols; |
|
|
|
rsc = (ctx->downsize_coeff_v << 30) | |
|
(ctx->resize_coeffs_v[row] << 16) | |
|
(ctx->downsize_coeff_h << 14) | |
|
(ctx->resize_coeffs_h[col]); |
|
|
|
dev_dbg(priv->ipu->dev, "%s: %ux%u -> %ux%u (rsc = 0x%x)\n", |
|
__func__, s_image->tile[tile].width, |
|
s_image->tile[tile].height, dest_width, dest_height, rsc); |
|
|
|
/* setup the IC resizer and CSC */ |
|
ret = ipu_ic_task_init_rsc(chan->ic, &ctx->csc, |
|
s_image->tile[tile].width, |
|
s_image->tile[tile].height, |
|
dest_width, |
|
dest_height, |
|
rsc); |
|
if (ret) { |
|
dev_err(priv->ipu->dev, "ipu_ic_task_init failed, %d\n", ret); |
|
return ret; |
|
} |
|
|
|
/* init the source MEM-->IC PP IDMAC channel */ |
|
init_idmac_channel(ctx, chan->in_chan, s_image, |
|
IPU_ROTATE_NONE, false, tile); |
|
|
|
if (ipu_rot_mode_is_irt(ctx->rot_mode)) { |
|
/* init the IC PP-->MEM IDMAC channel */ |
|
init_idmac_channel(ctx, chan->out_chan, d_image, |
|
IPU_ROTATE_NONE, true, tile); |
|
|
|
/* init the MEM-->IC PP ROT IDMAC channel */ |
|
init_idmac_channel(ctx, chan->rotation_in_chan, d_image, |
|
ctx->rot_mode, true, tile); |
|
|
|
/* init the destination IC PP ROT-->MEM IDMAC channel */ |
|
init_idmac_channel(ctx, chan->rotation_out_chan, d_image, |
|
IPU_ROTATE_NONE, false, tile); |
|
|
|
/* now link IC PP-->MEM to MEM-->IC PP ROT */ |
|
ipu_idmac_link(chan->out_chan, chan->rotation_in_chan); |
|
} else { |
|
/* init the destination IC PP-->MEM IDMAC channel */ |
|
init_idmac_channel(ctx, chan->out_chan, d_image, |
|
ctx->rot_mode, false, tile); |
|
} |
|
|
|
/* enable the IC */ |
|
ipu_ic_enable(chan->ic); |
|
|
|
/* set buffers ready */ |
|
ipu_idmac_select_buffer(chan->in_chan, 0); |
|
ipu_idmac_select_buffer(chan->out_chan, 0); |
|
if (ipu_rot_mode_is_irt(ctx->rot_mode)) |
|
ipu_idmac_select_buffer(chan->rotation_out_chan, 0); |
|
if (ctx->double_buffering) { |
|
ipu_idmac_select_buffer(chan->in_chan, 1); |
|
ipu_idmac_select_buffer(chan->out_chan, 1); |
|
if (ipu_rot_mode_is_irt(ctx->rot_mode)) |
|
ipu_idmac_select_buffer(chan->rotation_out_chan, 1); |
|
} |
|
|
|
/* enable the channels! */ |
|
ipu_idmac_enable_channel(chan->in_chan); |
|
ipu_idmac_enable_channel(chan->out_chan); |
|
if (ipu_rot_mode_is_irt(ctx->rot_mode)) { |
|
ipu_idmac_enable_channel(chan->rotation_in_chan); |
|
ipu_idmac_enable_channel(chan->rotation_out_chan); |
|
} |
|
|
|
ipu_ic_task_enable(chan->ic); |
|
|
|
ipu_cpmem_dump(chan->in_chan); |
|
ipu_cpmem_dump(chan->out_chan); |
|
if (ipu_rot_mode_is_irt(ctx->rot_mode)) { |
|
ipu_cpmem_dump(chan->rotation_in_chan); |
|
ipu_cpmem_dump(chan->rotation_out_chan); |
|
} |
|
|
|
ipu_dump(priv->ipu); |
|
|
|
return 0; |
|
} |
|
|
|
/* hold irqlock when calling */ |
|
static int do_run(struct ipu_image_convert_run *run) |
|
{ |
|
struct ipu_image_convert_ctx *ctx = run->ctx; |
|
struct ipu_image_convert_chan *chan = ctx->chan; |
|
|
|
lockdep_assert_held(&chan->irqlock); |
|
|
|
ctx->in.base.phys0 = run->in_phys; |
|
ctx->out.base.phys0 = run->out_phys; |
|
|
|
ctx->cur_buf_num = 0; |
|
ctx->next_tile = 1; |
|
|
|
/* remove run from pending_q and set as current */ |
|
list_del(&run->list); |
|
chan->current_run = run; |
|
|
|
return convert_start(run, 0); |
|
} |
|
|
|
/* hold irqlock when calling */ |
|
static void run_next(struct ipu_image_convert_chan *chan) |
|
{ |
|
struct ipu_image_convert_priv *priv = chan->priv; |
|
struct ipu_image_convert_run *run, *tmp; |
|
int ret; |
|
|
|
lockdep_assert_held(&chan->irqlock); |
|
|
|
list_for_each_entry_safe(run, tmp, &chan->pending_q, list) { |
|
/* skip contexts that are aborting */ |
|
if (run->ctx->aborting) { |
|
dev_dbg(priv->ipu->dev, |
|
"%s: task %u: skipping aborting ctx %p run %p\n", |
|
__func__, chan->ic_task, run->ctx, run); |
|
continue; |
|
} |
|
|
|
ret = do_run(run); |
|
if (!ret) |
|
break; |
|
|
|
/* |
|
* something went wrong with start, add the run |
|
* to done q and continue to the next run in the |
|
* pending q. |
|
*/ |
|
run->status = ret; |
|
list_add_tail(&run->list, &chan->done_q); |
|
chan->current_run = NULL; |
|
} |
|
} |
|
|
|
static void empty_done_q(struct ipu_image_convert_chan *chan) |
|
{ |
|
struct ipu_image_convert_priv *priv = chan->priv; |
|
struct ipu_image_convert_run *run; |
|
unsigned long flags; |
|
|
|
spin_lock_irqsave(&chan->irqlock, flags); |
|
|
|
while (!list_empty(&chan->done_q)) { |
|
run = list_entry(chan->done_q.next, |
|
struct ipu_image_convert_run, |
|
list); |
|
|
|
list_del(&run->list); |
|
|
|
dev_dbg(priv->ipu->dev, |
|
"%s: task %u: completing ctx %p run %p with %d\n", |
|
__func__, chan->ic_task, run->ctx, run, run->status); |
|
|
|
/* call the completion callback and free the run */ |
|
spin_unlock_irqrestore(&chan->irqlock, flags); |
|
run->ctx->complete(run, run->ctx->complete_context); |
|
spin_lock_irqsave(&chan->irqlock, flags); |
|
} |
|
|
|
spin_unlock_irqrestore(&chan->irqlock, flags); |
|
} |
|
|
|
/* |
|
* the bottom half thread clears out the done_q, calling the |
|
* completion handler for each. |
|
*/ |
|
static irqreturn_t do_bh(int irq, void *dev_id) |
|
{ |
|
struct ipu_image_convert_chan *chan = dev_id; |
|
struct ipu_image_convert_priv *priv = chan->priv; |
|
struct ipu_image_convert_ctx *ctx; |
|
unsigned long flags; |
|
|
|
dev_dbg(priv->ipu->dev, "%s: task %u: enter\n", __func__, |
|
chan->ic_task); |
|
|
|
empty_done_q(chan); |
|
|
|
spin_lock_irqsave(&chan->irqlock, flags); |
|
|
|
/* |
|
* the done_q is cleared out, signal any contexts |
|
* that are aborting that abort can complete. |
|
*/ |
|
list_for_each_entry(ctx, &chan->ctx_list, list) { |
|
if (ctx->aborting) { |
|
dev_dbg(priv->ipu->dev, |
|
"%s: task %u: signaling abort for ctx %p\n", |
|
__func__, chan->ic_task, ctx); |
|
complete_all(&ctx->aborted); |
|
} |
|
} |
|
|
|
spin_unlock_irqrestore(&chan->irqlock, flags); |
|
|
|
dev_dbg(priv->ipu->dev, "%s: task %u: exit\n", __func__, |
|
chan->ic_task); |
|
|
|
return IRQ_HANDLED; |
|
} |
|
|
|
static bool ic_settings_changed(struct ipu_image_convert_ctx *ctx) |
|
{ |
|
unsigned int cur_tile = ctx->next_tile - 1; |
|
unsigned int next_tile = ctx->next_tile; |
|
|
|
if (ctx->resize_coeffs_h[cur_tile % ctx->in.num_cols] != |
|
ctx->resize_coeffs_h[next_tile % ctx->in.num_cols] || |
|
ctx->resize_coeffs_v[cur_tile / ctx->in.num_cols] != |
|
ctx->resize_coeffs_v[next_tile / ctx->in.num_cols] || |
|
ctx->in.tile[cur_tile].width != ctx->in.tile[next_tile].width || |
|
ctx->in.tile[cur_tile].height != ctx->in.tile[next_tile].height || |
|
ctx->out.tile[cur_tile].width != ctx->out.tile[next_tile].width || |
|
ctx->out.tile[cur_tile].height != ctx->out.tile[next_tile].height) |
|
return true; |
|
|
|
return false; |
|
} |
|
|
|
/* hold irqlock when calling */ |
|
static irqreturn_t do_tile_complete(struct ipu_image_convert_run *run) |
|
{ |
|
struct ipu_image_convert_ctx *ctx = run->ctx; |
|
struct ipu_image_convert_chan *chan = ctx->chan; |
|
struct ipu_image_tile *src_tile, *dst_tile; |
|
struct ipu_image_convert_image *s_image = &ctx->in; |
|
struct ipu_image_convert_image *d_image = &ctx->out; |
|
struct ipuv3_channel *outch; |
|
unsigned int dst_idx; |
|
|
|
lockdep_assert_held(&chan->irqlock); |
|
|
|
outch = ipu_rot_mode_is_irt(ctx->rot_mode) ? |
|
chan->rotation_out_chan : chan->out_chan; |
|
|
|
/* |
|
* It is difficult to stop the channel DMA before the channels |
|
* enter the paused state. Without double-buffering the channels |
|
* are always in a paused state when the EOF irq occurs, so it |
|
* is safe to stop the channels now. For double-buffering we |
|
* just ignore the abort until the operation completes, when it |
|
* is safe to shut down. |
|
*/ |
|
if (ctx->aborting && !ctx->double_buffering) { |
|
convert_stop(run); |
|
run->status = -EIO; |
|
goto done; |
|
} |
|
|
|
if (ctx->next_tile == ctx->num_tiles) { |
|
/* |
|
* the conversion is complete |
|
*/ |
|
convert_stop(run); |
|
run->status = 0; |
|
goto done; |
|
} |
|
|
|
/* |
|
* not done, place the next tile buffers. |
|
*/ |
|
if (!ctx->double_buffering) { |
|
if (ic_settings_changed(ctx)) { |
|
convert_stop(run); |
|
convert_start(run, ctx->next_tile); |
|
} else { |
|
src_tile = &s_image->tile[ctx->next_tile]; |
|
dst_idx = ctx->out_tile_map[ctx->next_tile]; |
|
dst_tile = &d_image->tile[dst_idx]; |
|
|
|
ipu_cpmem_set_buffer(chan->in_chan, 0, |
|
s_image->base.phys0 + |
|
src_tile->offset); |
|
ipu_cpmem_set_buffer(outch, 0, |
|
d_image->base.phys0 + |
|
dst_tile->offset); |
|
if (s_image->fmt->planar) |
|
ipu_cpmem_set_uv_offset(chan->in_chan, |
|
src_tile->u_off, |
|
src_tile->v_off); |
|
if (d_image->fmt->planar) |
|
ipu_cpmem_set_uv_offset(outch, |
|
dst_tile->u_off, |
|
dst_tile->v_off); |
|
|
|
ipu_idmac_select_buffer(chan->in_chan, 0); |
|
ipu_idmac_select_buffer(outch, 0); |
|
} |
|
} else if (ctx->next_tile < ctx->num_tiles - 1) { |
|
|
|
src_tile = &s_image->tile[ctx->next_tile + 1]; |
|
dst_idx = ctx->out_tile_map[ctx->next_tile + 1]; |
|
dst_tile = &d_image->tile[dst_idx]; |
|
|
|
ipu_cpmem_set_buffer(chan->in_chan, ctx->cur_buf_num, |
|
s_image->base.phys0 + src_tile->offset); |
|
ipu_cpmem_set_buffer(outch, ctx->cur_buf_num, |
|
d_image->base.phys0 + dst_tile->offset); |
|
|
|
ipu_idmac_select_buffer(chan->in_chan, ctx->cur_buf_num); |
|
ipu_idmac_select_buffer(outch, ctx->cur_buf_num); |
|
|
|
ctx->cur_buf_num ^= 1; |
|
} |
|
|
|
ctx->eof_mask = 0; /* clear EOF irq mask for next tile */ |
|
ctx->next_tile++; |
|
return IRQ_HANDLED; |
|
done: |
|
list_add_tail(&run->list, &chan->done_q); |
|
chan->current_run = NULL; |
|
run_next(chan); |
|
return IRQ_WAKE_THREAD; |
|
} |
|
|
|
static irqreturn_t eof_irq(int irq, void *data) |
|
{ |
|
struct ipu_image_convert_chan *chan = data; |
|
struct ipu_image_convert_priv *priv = chan->priv; |
|
struct ipu_image_convert_ctx *ctx; |
|
struct ipu_image_convert_run *run; |
|
irqreturn_t ret = IRQ_HANDLED; |
|
bool tile_complete = false; |
|
unsigned long flags; |
|
|
|
spin_lock_irqsave(&chan->irqlock, flags); |
|
|
|
/* get current run and its context */ |
|
run = chan->current_run; |
|
if (!run) { |
|
ret = IRQ_NONE; |
|
goto out; |
|
} |
|
|
|
ctx = run->ctx; |
|
|
|
if (irq == chan->in_eof_irq) { |
|
ctx->eof_mask |= EOF_IRQ_IN; |
|
} else if (irq == chan->out_eof_irq) { |
|
ctx->eof_mask |= EOF_IRQ_OUT; |
|
} else if (irq == chan->rot_in_eof_irq || |
|
irq == chan->rot_out_eof_irq) { |
|
if (!ipu_rot_mode_is_irt(ctx->rot_mode)) { |
|
/* this was NOT a rotation op, shouldn't happen */ |
|
dev_err(priv->ipu->dev, |
|
"Unexpected rotation interrupt\n"); |
|
goto out; |
|
} |
|
ctx->eof_mask |= (irq == chan->rot_in_eof_irq) ? |
|
EOF_IRQ_ROT_IN : EOF_IRQ_ROT_OUT; |
|
} else { |
|
dev_err(priv->ipu->dev, "Received unknown irq %d\n", irq); |
|
ret = IRQ_NONE; |
|
goto out; |
|
} |
|
|
|
if (ipu_rot_mode_is_irt(ctx->rot_mode)) |
|
tile_complete = (ctx->eof_mask == EOF_IRQ_ROT_COMPLETE); |
|
else |
|
tile_complete = (ctx->eof_mask == EOF_IRQ_COMPLETE); |
|
|
|
if (tile_complete) |
|
ret = do_tile_complete(run); |
|
out: |
|
spin_unlock_irqrestore(&chan->irqlock, flags); |
|
return ret; |
|
} |
|
|
|
/* |
|
* try to force the completion of runs for this ctx. Called when |
|
* abort wait times out in ipu_image_convert_abort(). |
|
*/ |
|
static void force_abort(struct ipu_image_convert_ctx *ctx) |
|
{ |
|
struct ipu_image_convert_chan *chan = ctx->chan; |
|
struct ipu_image_convert_run *run; |
|
unsigned long flags; |
|
|
|
spin_lock_irqsave(&chan->irqlock, flags); |
|
|
|
run = chan->current_run; |
|
if (run && run->ctx == ctx) { |
|
convert_stop(run); |
|
run->status = -EIO; |
|
list_add_tail(&run->list, &chan->done_q); |
|
chan->current_run = NULL; |
|
run_next(chan); |
|
} |
|
|
|
spin_unlock_irqrestore(&chan->irqlock, flags); |
|
|
|
empty_done_q(chan); |
|
} |
|
|
|
static void release_ipu_resources(struct ipu_image_convert_chan *chan) |
|
{ |
|
if (chan->in_eof_irq >= 0) |
|
free_irq(chan->in_eof_irq, chan); |
|
if (chan->rot_in_eof_irq >= 0) |
|
free_irq(chan->rot_in_eof_irq, chan); |
|
if (chan->out_eof_irq >= 0) |
|
free_irq(chan->out_eof_irq, chan); |
|
if (chan->rot_out_eof_irq >= 0) |
|
free_irq(chan->rot_out_eof_irq, chan); |
|
|
|
if (!IS_ERR_OR_NULL(chan->in_chan)) |
|
ipu_idmac_put(chan->in_chan); |
|
if (!IS_ERR_OR_NULL(chan->out_chan)) |
|
ipu_idmac_put(chan->out_chan); |
|
if (!IS_ERR_OR_NULL(chan->rotation_in_chan)) |
|
ipu_idmac_put(chan->rotation_in_chan); |
|
if (!IS_ERR_OR_NULL(chan->rotation_out_chan)) |
|
ipu_idmac_put(chan->rotation_out_chan); |
|
if (!IS_ERR_OR_NULL(chan->ic)) |
|
ipu_ic_put(chan->ic); |
|
|
|
chan->in_chan = chan->out_chan = chan->rotation_in_chan = |
|
chan->rotation_out_chan = NULL; |
|
chan->in_eof_irq = -1; |
|
chan->rot_in_eof_irq = -1; |
|
chan->out_eof_irq = -1; |
|
chan->rot_out_eof_irq = -1; |
|
} |
|
|
|
static int get_eof_irq(struct ipu_image_convert_chan *chan, |
|
struct ipuv3_channel *channel) |
|
{ |
|
struct ipu_image_convert_priv *priv = chan->priv; |
|
int ret, irq; |
|
|
|
irq = ipu_idmac_channel_irq(priv->ipu, channel, IPU_IRQ_EOF); |
|
|
|
ret = request_threaded_irq(irq, eof_irq, do_bh, 0, "ipu-ic", chan); |
|
if (ret < 0) { |
|
dev_err(priv->ipu->dev, "could not acquire irq %d\n", irq); |
|
return ret; |
|
} |
|
|
|
return irq; |
|
} |
|
|
|
static int get_ipu_resources(struct ipu_image_convert_chan *chan) |
|
{ |
|
const struct ipu_image_convert_dma_chan *dma = chan->dma_ch; |
|
struct ipu_image_convert_priv *priv = chan->priv; |
|
int ret; |
|
|
|
/* get IC */ |
|
chan->ic = ipu_ic_get(priv->ipu, chan->ic_task); |
|
if (IS_ERR(chan->ic)) { |
|
dev_err(priv->ipu->dev, "could not acquire IC\n"); |
|
ret = PTR_ERR(chan->ic); |
|
goto err; |
|
} |
|
|
|
/* get IDMAC channels */ |
|
chan->in_chan = ipu_idmac_get(priv->ipu, dma->in); |
|
chan->out_chan = ipu_idmac_get(priv->ipu, dma->out); |
|
if (IS_ERR(chan->in_chan) || IS_ERR(chan->out_chan)) { |
|
dev_err(priv->ipu->dev, "could not acquire idmac channels\n"); |
|
ret = -EBUSY; |
|
goto err; |
|
} |
|
|
|
chan->rotation_in_chan = ipu_idmac_get(priv->ipu, dma->rot_in); |
|
chan->rotation_out_chan = ipu_idmac_get(priv->ipu, dma->rot_out); |
|
if (IS_ERR(chan->rotation_in_chan) || IS_ERR(chan->rotation_out_chan)) { |
|
dev_err(priv->ipu->dev, |
|
"could not acquire idmac rotation channels\n"); |
|
ret = -EBUSY; |
|
goto err; |
|
} |
|
|
|
/* acquire the EOF interrupts */ |
|
ret = get_eof_irq(chan, chan->in_chan); |
|
if (ret < 0) { |
|
chan->in_eof_irq = -1; |
|
goto err; |
|
} |
|
chan->in_eof_irq = ret; |
|
|
|
ret = get_eof_irq(chan, chan->rotation_in_chan); |
|
if (ret < 0) { |
|
chan->rot_in_eof_irq = -1; |
|
goto err; |
|
} |
|
chan->rot_in_eof_irq = ret; |
|
|
|
ret = get_eof_irq(chan, chan->out_chan); |
|
if (ret < 0) { |
|
chan->out_eof_irq = -1; |
|
goto err; |
|
} |
|
chan->out_eof_irq = ret; |
|
|
|
ret = get_eof_irq(chan, chan->rotation_out_chan); |
|
if (ret < 0) { |
|
chan->rot_out_eof_irq = -1; |
|
goto err; |
|
} |
|
chan->rot_out_eof_irq = ret; |
|
|
|
return 0; |
|
err: |
|
release_ipu_resources(chan); |
|
return ret; |
|
} |
|
|
|
static int fill_image(struct ipu_image_convert_ctx *ctx, |
|
struct ipu_image_convert_image *ic_image, |
|
struct ipu_image *image, |
|
enum ipu_image_convert_type type) |
|
{ |
|
struct ipu_image_convert_priv *priv = ctx->chan->priv; |
|
|
|
ic_image->base = *image; |
|
ic_image->type = type; |
|
|
|
ic_image->fmt = get_format(image->pix.pixelformat); |
|
if (!ic_image->fmt) { |
|
dev_err(priv->ipu->dev, "pixelformat not supported for %s\n", |
|
type == IMAGE_CONVERT_OUT ? "Output" : "Input"); |
|
return -EINVAL; |
|
} |
|
|
|
if (ic_image->fmt->planar) |
|
ic_image->stride = ic_image->base.pix.width; |
|
else |
|
ic_image->stride = ic_image->base.pix.bytesperline; |
|
|
|
return 0; |
|
} |
|
|
|
/* borrowed from drivers/media/v4l2-core/v4l2-common.c */ |
|
static unsigned int clamp_align(unsigned int x, unsigned int min, |
|
unsigned int max, unsigned int align) |
|
{ |
|
/* Bits that must be zero to be aligned */ |
|
unsigned int mask = ~((1 << align) - 1); |
|
|
|
/* Clamp to aligned min and max */ |
|
x = clamp(x, (min + ~mask) & mask, max & mask); |
|
|
|
/* Round to nearest aligned value */ |
|
if (align) |
|
x = (x + (1 << (align - 1))) & mask; |
|
|
|
return x; |
|
} |
|
|
|
/* Adjusts input/output images to IPU restrictions */ |
|
void ipu_image_convert_adjust(struct ipu_image *in, struct ipu_image *out, |
|
enum ipu_rotate_mode rot_mode) |
|
{ |
|
const struct ipu_image_pixfmt *infmt, *outfmt; |
|
u32 w_align_out, h_align_out; |
|
u32 w_align_in, h_align_in; |
|
|
|
infmt = get_format(in->pix.pixelformat); |
|
outfmt = get_format(out->pix.pixelformat); |
|
|
|
/* set some default pixel formats if needed */ |
|
if (!infmt) { |
|
in->pix.pixelformat = V4L2_PIX_FMT_RGB24; |
|
infmt = get_format(V4L2_PIX_FMT_RGB24); |
|
} |
|
if (!outfmt) { |
|
out->pix.pixelformat = V4L2_PIX_FMT_RGB24; |
|
outfmt = get_format(V4L2_PIX_FMT_RGB24); |
|
} |
|
|
|
/* image converter does not handle fields */ |
|
in->pix.field = out->pix.field = V4L2_FIELD_NONE; |
|
|
|
/* resizer cannot downsize more than 4:1 */ |
|
if (ipu_rot_mode_is_irt(rot_mode)) { |
|
out->pix.height = max_t(__u32, out->pix.height, |
|
in->pix.width / 4); |
|
out->pix.width = max_t(__u32, out->pix.width, |
|
in->pix.height / 4); |
|
} else { |
|
out->pix.width = max_t(__u32, out->pix.width, |
|
in->pix.width / 4); |
|
out->pix.height = max_t(__u32, out->pix.height, |
|
in->pix.height / 4); |
|
} |
|
|
|
/* align input width/height */ |
|
w_align_in = ilog2(tile_width_align(IMAGE_CONVERT_IN, infmt, |
|
rot_mode)); |
|
h_align_in = ilog2(tile_height_align(IMAGE_CONVERT_IN, infmt, |
|
rot_mode)); |
|
in->pix.width = clamp_align(in->pix.width, MIN_W, MAX_W, |
|
w_align_in); |
|
in->pix.height = clamp_align(in->pix.height, MIN_H, MAX_H, |
|
h_align_in); |
|
|
|
/* align output width/height */ |
|
w_align_out = ilog2(tile_width_align(IMAGE_CONVERT_OUT, outfmt, |
|
rot_mode)); |
|
h_align_out = ilog2(tile_height_align(IMAGE_CONVERT_OUT, outfmt, |
|
rot_mode)); |
|
out->pix.width = clamp_align(out->pix.width, MIN_W, MAX_W, |
|
w_align_out); |
|
out->pix.height = clamp_align(out->pix.height, MIN_H, MAX_H, |
|
h_align_out); |
|
|
|
/* set input/output strides and image sizes */ |
|
in->pix.bytesperline = infmt->planar ? |
|
clamp_align(in->pix.width, 2 << w_align_in, MAX_W, |
|
w_align_in) : |
|
clamp_align((in->pix.width * infmt->bpp) >> 3, |
|
((2 << w_align_in) * infmt->bpp) >> 3, |
|
(MAX_W * infmt->bpp) >> 3, |
|
w_align_in); |
|
in->pix.sizeimage = infmt->planar ? |
|
(in->pix.height * in->pix.bytesperline * infmt->bpp) >> 3 : |
|
in->pix.height * in->pix.bytesperline; |
|
out->pix.bytesperline = outfmt->planar ? out->pix.width : |
|
(out->pix.width * outfmt->bpp) >> 3; |
|
out->pix.sizeimage = outfmt->planar ? |
|
(out->pix.height * out->pix.bytesperline * outfmt->bpp) >> 3 : |
|
out->pix.height * out->pix.bytesperline; |
|
} |
|
EXPORT_SYMBOL_GPL(ipu_image_convert_adjust); |
|
|
|
/* |
|
* this is used by ipu_image_convert_prepare() to verify set input and |
|
* output images are valid before starting the conversion. Clients can |
|
* also call it before calling ipu_image_convert_prepare(). |
|
*/ |
|
int ipu_image_convert_verify(struct ipu_image *in, struct ipu_image *out, |
|
enum ipu_rotate_mode rot_mode) |
|
{ |
|
struct ipu_image testin, testout; |
|
|
|
testin = *in; |
|
testout = *out; |
|
|
|
ipu_image_convert_adjust(&testin, &testout, rot_mode); |
|
|
|
if (testin.pix.width != in->pix.width || |
|
testin.pix.height != in->pix.height || |
|
testout.pix.width != out->pix.width || |
|
testout.pix.height != out->pix.height) |
|
return -EINVAL; |
|
|
|
return 0; |
|
} |
|
EXPORT_SYMBOL_GPL(ipu_image_convert_verify); |
|
|
|
/* |
|
* Call ipu_image_convert_prepare() to prepare for the conversion of |
|
* given images and rotation mode. Returns a new conversion context. |
|
*/ |
|
struct ipu_image_convert_ctx * |
|
ipu_image_convert_prepare(struct ipu_soc *ipu, enum ipu_ic_task ic_task, |
|
struct ipu_image *in, struct ipu_image *out, |
|
enum ipu_rotate_mode rot_mode, |
|
ipu_image_convert_cb_t complete, |
|
void *complete_context) |
|
{ |
|
struct ipu_image_convert_priv *priv = ipu->image_convert_priv; |
|
struct ipu_image_convert_image *s_image, *d_image; |
|
struct ipu_image_convert_chan *chan; |
|
struct ipu_image_convert_ctx *ctx; |
|
unsigned long flags; |
|
unsigned int i; |
|
bool get_res; |
|
int ret; |
|
|
|
if (!in || !out || !complete || |
|
(ic_task != IC_TASK_VIEWFINDER && |
|
ic_task != IC_TASK_POST_PROCESSOR)) |
|
return ERR_PTR(-EINVAL); |
|
|
|
/* verify the in/out images before continuing */ |
|
ret = ipu_image_convert_verify(in, out, rot_mode); |
|
if (ret) { |
|
dev_err(priv->ipu->dev, "%s: in/out formats invalid\n", |
|
__func__); |
|
return ERR_PTR(ret); |
|
} |
|
|
|
chan = &priv->chan[ic_task]; |
|
|
|
ctx = kzalloc(sizeof(*ctx), GFP_KERNEL); |
|
if (!ctx) |
|
return ERR_PTR(-ENOMEM); |
|
|
|
dev_dbg(priv->ipu->dev, "%s: task %u: ctx %p\n", __func__, |
|
chan->ic_task, ctx); |
|
|
|
ctx->chan = chan; |
|
init_completion(&ctx->aborted); |
|
|
|
ctx->rot_mode = rot_mode; |
|
|
|
/* Sets ctx->in.num_rows/cols as well */ |
|
ret = calc_image_resize_coefficients(ctx, in, out); |
|
if (ret) |
|
goto out_free; |
|
|
|
s_image = &ctx->in; |
|
d_image = &ctx->out; |
|
|
|
/* set tiling and rotation */ |
|
if (ipu_rot_mode_is_irt(rot_mode)) { |
|
d_image->num_rows = s_image->num_cols; |
|
d_image->num_cols = s_image->num_rows; |
|
} else { |
|
d_image->num_rows = s_image->num_rows; |
|
d_image->num_cols = s_image->num_cols; |
|
} |
|
|
|
ctx->num_tiles = d_image->num_cols * d_image->num_rows; |
|
|
|
ret = fill_image(ctx, s_image, in, IMAGE_CONVERT_IN); |
|
if (ret) |
|
goto out_free; |
|
ret = fill_image(ctx, d_image, out, IMAGE_CONVERT_OUT); |
|
if (ret) |
|
goto out_free; |
|
|
|
calc_out_tile_map(ctx); |
|
|
|
find_seams(ctx, s_image, d_image); |
|
|
|
ret = calc_tile_dimensions(ctx, s_image); |
|
if (ret) |
|
goto out_free; |
|
|
|
ret = calc_tile_offsets(ctx, s_image); |
|
if (ret) |
|
goto out_free; |
|
|
|
calc_tile_dimensions(ctx, d_image); |
|
ret = calc_tile_offsets(ctx, d_image); |
|
if (ret) |
|
goto out_free; |
|
|
|
calc_tile_resize_coefficients(ctx); |
|
|
|
ret = ipu_ic_calc_csc(&ctx->csc, |
|
s_image->base.pix.ycbcr_enc, |
|
s_image->base.pix.quantization, |
|
ipu_pixelformat_to_colorspace(s_image->fmt->fourcc), |
|
d_image->base.pix.ycbcr_enc, |
|
d_image->base.pix.quantization, |
|
ipu_pixelformat_to_colorspace(d_image->fmt->fourcc)); |
|
if (ret) |
|
goto out_free; |
|
|
|
dump_format(ctx, s_image); |
|
dump_format(ctx, d_image); |
|
|
|
ctx->complete = complete; |
|
ctx->complete_context = complete_context; |
|
|
|
/* |
|
* Can we use double-buffering for this operation? If there is |
|
* only one tile (the whole image can be converted in a single |
|
* operation) there's no point in using double-buffering. Also, |
|
* the IPU's IDMAC channels allow only a single U and V plane |
|
* offset shared between both buffers, but these offsets change |
|
* for every tile, and therefore would have to be updated for |
|
* each buffer which is not possible. So double-buffering is |
|
* impossible when either the source or destination images are |
|
* a planar format (YUV420, YUV422P, etc.). Further, differently |
|
* sized tiles or different resizing coefficients per tile |
|
* prevent double-buffering as well. |
|
*/ |
|
ctx->double_buffering = (ctx->num_tiles > 1 && |
|
!s_image->fmt->planar && |
|
!d_image->fmt->planar); |
|
for (i = 1; i < ctx->num_tiles; i++) { |
|
if (ctx->in.tile[i].width != ctx->in.tile[0].width || |
|
ctx->in.tile[i].height != ctx->in.tile[0].height || |
|
ctx->out.tile[i].width != ctx->out.tile[0].width || |
|
ctx->out.tile[i].height != ctx->out.tile[0].height) { |
|
ctx->double_buffering = false; |
|
break; |
|
} |
|
} |
|
for (i = 1; i < ctx->in.num_cols; i++) { |
|
if (ctx->resize_coeffs_h[i] != ctx->resize_coeffs_h[0]) { |
|
ctx->double_buffering = false; |
|
break; |
|
} |
|
} |
|
for (i = 1; i < ctx->in.num_rows; i++) { |
|
if (ctx->resize_coeffs_v[i] != ctx->resize_coeffs_v[0]) { |
|
ctx->double_buffering = false; |
|
break; |
|
} |
|
} |
|
|
|
if (ipu_rot_mode_is_irt(ctx->rot_mode)) { |
|
unsigned long intermediate_size = d_image->tile[0].size; |
|
|
|
for (i = 1; i < ctx->num_tiles; i++) { |
|
if (d_image->tile[i].size > intermediate_size) |
|
intermediate_size = d_image->tile[i].size; |
|
} |
|
|
|
ret = alloc_dma_buf(priv, &ctx->rot_intermediate[0], |
|
intermediate_size); |
|
if (ret) |
|
goto out_free; |
|
if (ctx->double_buffering) { |
|
ret = alloc_dma_buf(priv, |
|
&ctx->rot_intermediate[1], |
|
intermediate_size); |
|
if (ret) |
|
goto out_free_dmabuf0; |
|
} |
|
} |
|
|
|
spin_lock_irqsave(&chan->irqlock, flags); |
|
|
|
get_res = list_empty(&chan->ctx_list); |
|
|
|
list_add_tail(&ctx->list, &chan->ctx_list); |
|
|
|
spin_unlock_irqrestore(&chan->irqlock, flags); |
|
|
|
if (get_res) { |
|
ret = get_ipu_resources(chan); |
|
if (ret) |
|
goto out_free_dmabuf1; |
|
} |
|
|
|
return ctx; |
|
|
|
out_free_dmabuf1: |
|
free_dma_buf(priv, &ctx->rot_intermediate[1]); |
|
spin_lock_irqsave(&chan->irqlock, flags); |
|
list_del(&ctx->list); |
|
spin_unlock_irqrestore(&chan->irqlock, flags); |
|
out_free_dmabuf0: |
|
free_dma_buf(priv, &ctx->rot_intermediate[0]); |
|
out_free: |
|
kfree(ctx); |
|
return ERR_PTR(ret); |
|
} |
|
EXPORT_SYMBOL_GPL(ipu_image_convert_prepare); |
|
|
|
/* |
|
* Carry out a single image conversion run. Only the physaddr's of the input |
|
* and output image buffers are needed. The conversion context must have |
|
* been created previously with ipu_image_convert_prepare(). |
|
*/ |
|
int ipu_image_convert_queue(struct ipu_image_convert_run *run) |
|
{ |
|
struct ipu_image_convert_chan *chan; |
|
struct ipu_image_convert_priv *priv; |
|
struct ipu_image_convert_ctx *ctx; |
|
unsigned long flags; |
|
int ret = 0; |
|
|
|
if (!run || !run->ctx || !run->in_phys || !run->out_phys) |
|
return -EINVAL; |
|
|
|
ctx = run->ctx; |
|
chan = ctx->chan; |
|
priv = chan->priv; |
|
|
|
dev_dbg(priv->ipu->dev, "%s: task %u: ctx %p run %p\n", __func__, |
|
chan->ic_task, ctx, run); |
|
|
|
INIT_LIST_HEAD(&run->list); |
|
|
|
spin_lock_irqsave(&chan->irqlock, flags); |
|
|
|
if (ctx->aborting) { |
|
ret = -EIO; |
|
goto unlock; |
|
} |
|
|
|
list_add_tail(&run->list, &chan->pending_q); |
|
|
|
if (!chan->current_run) { |
|
ret = do_run(run); |
|
if (ret) |
|
chan->current_run = NULL; |
|
} |
|
unlock: |
|
spin_unlock_irqrestore(&chan->irqlock, flags); |
|
return ret; |
|
} |
|
EXPORT_SYMBOL_GPL(ipu_image_convert_queue); |
|
|
|
/* Abort any active or pending conversions for this context */ |
|
static void __ipu_image_convert_abort(struct ipu_image_convert_ctx *ctx) |
|
{ |
|
struct ipu_image_convert_chan *chan = ctx->chan; |
|
struct ipu_image_convert_priv *priv = chan->priv; |
|
struct ipu_image_convert_run *run, *active_run, *tmp; |
|
unsigned long flags; |
|
int run_count, ret; |
|
|
|
spin_lock_irqsave(&chan->irqlock, flags); |
|
|
|
/* move all remaining pending runs in this context to done_q */ |
|
list_for_each_entry_safe(run, tmp, &chan->pending_q, list) { |
|
if (run->ctx != ctx) |
|
continue; |
|
run->status = -EIO; |
|
list_move_tail(&run->list, &chan->done_q); |
|
} |
|
|
|
run_count = get_run_count(ctx, &chan->done_q); |
|
active_run = (chan->current_run && chan->current_run->ctx == ctx) ? |
|
chan->current_run : NULL; |
|
|
|
if (active_run) |
|
reinit_completion(&ctx->aborted); |
|
|
|
ctx->aborting = true; |
|
|
|
spin_unlock_irqrestore(&chan->irqlock, flags); |
|
|
|
if (!run_count && !active_run) { |
|
dev_dbg(priv->ipu->dev, |
|
"%s: task %u: no abort needed for ctx %p\n", |
|
__func__, chan->ic_task, ctx); |
|
return; |
|
} |
|
|
|
if (!active_run) { |
|
empty_done_q(chan); |
|
return; |
|
} |
|
|
|
dev_dbg(priv->ipu->dev, |
|
"%s: task %u: wait for completion: %d runs\n", |
|
__func__, chan->ic_task, run_count); |
|
|
|
ret = wait_for_completion_timeout(&ctx->aborted, |
|
msecs_to_jiffies(10000)); |
|
if (ret == 0) { |
|
dev_warn(priv->ipu->dev, "%s: timeout\n", __func__); |
|
force_abort(ctx); |
|
} |
|
} |
|
|
|
void ipu_image_convert_abort(struct ipu_image_convert_ctx *ctx) |
|
{ |
|
__ipu_image_convert_abort(ctx); |
|
ctx->aborting = false; |
|
} |
|
EXPORT_SYMBOL_GPL(ipu_image_convert_abort); |
|
|
|
/* Unprepare image conversion context */ |
|
void ipu_image_convert_unprepare(struct ipu_image_convert_ctx *ctx) |
|
{ |
|
struct ipu_image_convert_chan *chan = ctx->chan; |
|
struct ipu_image_convert_priv *priv = chan->priv; |
|
unsigned long flags; |
|
bool put_res; |
|
|
|
/* make sure no runs are hanging around */ |
|
__ipu_image_convert_abort(ctx); |
|
|
|
dev_dbg(priv->ipu->dev, "%s: task %u: removing ctx %p\n", __func__, |
|
chan->ic_task, ctx); |
|
|
|
spin_lock_irqsave(&chan->irqlock, flags); |
|
|
|
list_del(&ctx->list); |
|
|
|
put_res = list_empty(&chan->ctx_list); |
|
|
|
spin_unlock_irqrestore(&chan->irqlock, flags); |
|
|
|
if (put_res) |
|
release_ipu_resources(chan); |
|
|
|
free_dma_buf(priv, &ctx->rot_intermediate[1]); |
|
free_dma_buf(priv, &ctx->rot_intermediate[0]); |
|
|
|
kfree(ctx); |
|
} |
|
EXPORT_SYMBOL_GPL(ipu_image_convert_unprepare); |
|
|
|
/* |
|
* "Canned" asynchronous single image conversion. Allocates and returns |
|
* a new conversion run. On successful return the caller must free the |
|
* run and call ipu_image_convert_unprepare() after conversion completes. |
|
*/ |
|
struct ipu_image_convert_run * |
|
ipu_image_convert(struct ipu_soc *ipu, enum ipu_ic_task ic_task, |
|
struct ipu_image *in, struct ipu_image *out, |
|
enum ipu_rotate_mode rot_mode, |
|
ipu_image_convert_cb_t complete, |
|
void *complete_context) |
|
{ |
|
struct ipu_image_convert_ctx *ctx; |
|
struct ipu_image_convert_run *run; |
|
int ret; |
|
|
|
ctx = ipu_image_convert_prepare(ipu, ic_task, in, out, rot_mode, |
|
complete, complete_context); |
|
if (IS_ERR(ctx)) |
|
return ERR_CAST(ctx); |
|
|
|
run = kzalloc(sizeof(*run), GFP_KERNEL); |
|
if (!run) { |
|
ipu_image_convert_unprepare(ctx); |
|
return ERR_PTR(-ENOMEM); |
|
} |
|
|
|
run->ctx = ctx; |
|
run->in_phys = in->phys0; |
|
run->out_phys = out->phys0; |
|
|
|
ret = ipu_image_convert_queue(run); |
|
if (ret) { |
|
ipu_image_convert_unprepare(ctx); |
|
kfree(run); |
|
return ERR_PTR(ret); |
|
} |
|
|
|
return run; |
|
} |
|
EXPORT_SYMBOL_GPL(ipu_image_convert); |
|
|
|
/* "Canned" synchronous single image conversion */ |
|
static void image_convert_sync_complete(struct ipu_image_convert_run *run, |
|
void *data) |
|
{ |
|
struct completion *comp = data; |
|
|
|
complete(comp); |
|
} |
|
|
|
int ipu_image_convert_sync(struct ipu_soc *ipu, enum ipu_ic_task ic_task, |
|
struct ipu_image *in, struct ipu_image *out, |
|
enum ipu_rotate_mode rot_mode) |
|
{ |
|
struct ipu_image_convert_run *run; |
|
struct completion comp; |
|
int ret; |
|
|
|
init_completion(&comp); |
|
|
|
run = ipu_image_convert(ipu, ic_task, in, out, rot_mode, |
|
image_convert_sync_complete, &comp); |
|
if (IS_ERR(run)) |
|
return PTR_ERR(run); |
|
|
|
ret = wait_for_completion_timeout(&comp, msecs_to_jiffies(10000)); |
|
ret = (ret == 0) ? -ETIMEDOUT : 0; |
|
|
|
ipu_image_convert_unprepare(run->ctx); |
|
kfree(run); |
|
|
|
return ret; |
|
} |
|
EXPORT_SYMBOL_GPL(ipu_image_convert_sync); |
|
|
|
int ipu_image_convert_init(struct ipu_soc *ipu, struct device *dev) |
|
{ |
|
struct ipu_image_convert_priv *priv; |
|
int i; |
|
|
|
priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL); |
|
if (!priv) |
|
return -ENOMEM; |
|
|
|
ipu->image_convert_priv = priv; |
|
priv->ipu = ipu; |
|
|
|
for (i = 0; i < IC_NUM_TASKS; i++) { |
|
struct ipu_image_convert_chan *chan = &priv->chan[i]; |
|
|
|
chan->ic_task = i; |
|
chan->priv = priv; |
|
chan->dma_ch = &image_convert_dma_chan[i]; |
|
chan->in_eof_irq = -1; |
|
chan->rot_in_eof_irq = -1; |
|
chan->out_eof_irq = -1; |
|
chan->rot_out_eof_irq = -1; |
|
|
|
spin_lock_init(&chan->irqlock); |
|
INIT_LIST_HEAD(&chan->ctx_list); |
|
INIT_LIST_HEAD(&chan->pending_q); |
|
INIT_LIST_HEAD(&chan->done_q); |
|
} |
|
|
|
return 0; |
|
} |
|
|
|
void ipu_image_convert_exit(struct ipu_soc *ipu) |
|
{ |
|
}
|
|
|