Version:  2.0.40 2.2.26 2.4.37 3.2 3.3 3.4 3.5 3.6 3.7 3.8 3.9 3.10 3.11 3.12 3.13 3.14 3.15 3.16 3.17 3.18

Linux/drivers/media/platform/ti-vpe/vpe.c

  1 /*
  2  * TI VPE mem2mem driver, based on the virtual v4l2-mem2mem example driver
  3  *
  4  * Copyright (c) 2013 Texas Instruments Inc.
  5  * David Griego, <dagriego@biglakesoftware.com>
  6  * Dale Farnsworth, <dale@farnsworth.org>
  7  * Archit Taneja, <archit@ti.com>
  8  *
  9  * Copyright (c) 2009-2010 Samsung Electronics Co., Ltd.
 10  * Pawel Osciak, <pawel@osciak.com>
 11  * Marek Szyprowski, <m.szyprowski@samsung.com>
 12  *
 13  * Based on the virtual v4l2-mem2mem example device
 14  *
 15  * This program is free software; you can redistribute it and/or modify it
 16  * under the terms of the GNU General Public License version 2 as published by
 17  * the Free Software Foundation
 18  */
 19 
 20 #include <linux/delay.h>
 21 #include <linux/dma-mapping.h>
 22 #include <linux/err.h>
 23 #include <linux/fs.h>
 24 #include <linux/interrupt.h>
 25 #include <linux/io.h>
 26 #include <linux/ioctl.h>
 27 #include <linux/module.h>
 28 #include <linux/platform_device.h>
 29 #include <linux/pm_runtime.h>
 30 #include <linux/sched.h>
 31 #include <linux/slab.h>
 32 #include <linux/videodev2.h>
 33 #include <linux/log2.h>
 34 #include <linux/sizes.h>
 35 
 36 #include <media/v4l2-common.h>
 37 #include <media/v4l2-ctrls.h>
 38 #include <media/v4l2-device.h>
 39 #include <media/v4l2-event.h>
 40 #include <media/v4l2-ioctl.h>
 41 #include <media/v4l2-mem2mem.h>
 42 #include <media/videobuf2-core.h>
 43 #include <media/videobuf2-dma-contig.h>
 44 
 45 #include "vpdma.h"
 46 #include "vpe_regs.h"
 47 #include "sc.h"
 48 #include "csc.h"
 49 
 50 #define VPE_MODULE_NAME "vpe"
 51 
 52 /* minimum and maximum frame sizes */
 53 #define MIN_W           32
 54 #define MIN_H           32
 55 #define MAX_W           1920
 56 #define MAX_H           1080
 57 
 58 /* required alignments */
 59 #define S_ALIGN         0       /* multiple of 1 */
 60 #define H_ALIGN         1       /* multiple of 2 */
 61 
 62 /* flags that indicate a format can be used for capture/output */
 63 #define VPE_FMT_TYPE_CAPTURE    (1 << 0)
 64 #define VPE_FMT_TYPE_OUTPUT     (1 << 1)
 65 
 66 /* used as plane indices */
 67 #define VPE_MAX_PLANES  2
 68 #define VPE_LUMA        0
 69 #define VPE_CHROMA      1
 70 
 71 /* per m2m context info */
 72 #define VPE_MAX_SRC_BUFS        3       /* need 3 src fields to de-interlace */
 73 
 74 #define VPE_DEF_BUFS_PER_JOB    1       /* default one buffer per batch job */
 75 
 76 /*
 77  * each VPE context can need up to 3 config desciptors, 7 input descriptors,
 78  * 3 output descriptors, and 10 control descriptors
 79  */
 80 #define VPE_DESC_LIST_SIZE      (10 * VPDMA_DTD_DESC_SIZE +     \
 81                                         13 * VPDMA_CFD_CTD_DESC_SIZE)
 82 
 83 #define vpe_dbg(vpedev, fmt, arg...)    \
 84                 dev_dbg((vpedev)->v4l2_dev.dev, fmt, ##arg)
 85 #define vpe_err(vpedev, fmt, arg...)    \
 86                 dev_err((vpedev)->v4l2_dev.dev, fmt, ##arg)
 87 
 88 struct vpe_us_coeffs {
 89         unsigned short  anchor_fid0_c0;
 90         unsigned short  anchor_fid0_c1;
 91         unsigned short  anchor_fid0_c2;
 92         unsigned short  anchor_fid0_c3;
 93         unsigned short  interp_fid0_c0;
 94         unsigned short  interp_fid0_c1;
 95         unsigned short  interp_fid0_c2;
 96         unsigned short  interp_fid0_c3;
 97         unsigned short  anchor_fid1_c0;
 98         unsigned short  anchor_fid1_c1;
 99         unsigned short  anchor_fid1_c2;
100         unsigned short  anchor_fid1_c3;
101         unsigned short  interp_fid1_c0;
102         unsigned short  interp_fid1_c1;
103         unsigned short  interp_fid1_c2;
104         unsigned short  interp_fid1_c3;
105 };
106 
107 /*
108  * Default upsampler coefficients
109  */
110 static const struct vpe_us_coeffs us_coeffs[] = {
111         {
112                 /* Coefficients for progressive input */
113                 0x00C8, 0x0348, 0x0018, 0x3FD8, 0x3FB8, 0x0378, 0x00E8, 0x3FE8,
114                 0x00C8, 0x0348, 0x0018, 0x3FD8, 0x3FB8, 0x0378, 0x00E8, 0x3FE8,
115         },
116         {
117                 /* Coefficients for Top Field Interlaced input */
118                 0x0051, 0x03D5, 0x3FE3, 0x3FF7, 0x3FB5, 0x02E9, 0x018F, 0x3FD3,
119                 /* Coefficients for Bottom Field Interlaced input */
120                 0x016B, 0x0247, 0x00B1, 0x3F9D, 0x3FCF, 0x03DB, 0x005D, 0x3FF9,
121         },
122 };
123 
124 /*
125  * the following registers are for configuring some of the parameters of the
126  * motion and edge detection blocks inside DEI, these generally remain the same,
127  * these could be passed later via userspace if some one needs to tweak these.
128  */
129 struct vpe_dei_regs {
130         unsigned long mdt_spacial_freq_thr_reg;         /* VPE_DEI_REG2 */
131         unsigned long edi_config_reg;                   /* VPE_DEI_REG3 */
132         unsigned long edi_lut_reg0;                     /* VPE_DEI_REG4 */
133         unsigned long edi_lut_reg1;                     /* VPE_DEI_REG5 */
134         unsigned long edi_lut_reg2;                     /* VPE_DEI_REG6 */
135         unsigned long edi_lut_reg3;                     /* VPE_DEI_REG7 */
136 };
137 
138 /*
139  * default expert DEI register values, unlikely to be modified.
140  */
141 static const struct vpe_dei_regs dei_regs = {
142         .mdt_spacial_freq_thr_reg = 0x020C0804u,
143         .edi_config_reg = 0x0118100Fu,
144         .edi_lut_reg0 = 0x08040200u,
145         .edi_lut_reg1 = 0x1010100Cu,
146         .edi_lut_reg2 = 0x10101010u,
147         .edi_lut_reg3 = 0x10101010u,
148 };
149 
150 /*
151  * The port_data structure contains per-port data.
152  */
153 struct vpe_port_data {
154         enum vpdma_channel channel;     /* VPDMA channel */
155         u8      vb_index;               /* input frame f, f-1, f-2 index */
156         u8      vb_part;                /* plane index for co-panar formats */
157 };
158 
159 /*
160  * Define indices into the port_data tables
161  */
162 #define VPE_PORT_LUMA1_IN       0
163 #define VPE_PORT_CHROMA1_IN     1
164 #define VPE_PORT_LUMA2_IN       2
165 #define VPE_PORT_CHROMA2_IN     3
166 #define VPE_PORT_LUMA3_IN       4
167 #define VPE_PORT_CHROMA3_IN     5
168 #define VPE_PORT_MV_IN          6
169 #define VPE_PORT_MV_OUT         7
170 #define VPE_PORT_LUMA_OUT       8
171 #define VPE_PORT_CHROMA_OUT     9
172 #define VPE_PORT_RGB_OUT        10
173 
174 static const struct vpe_port_data port_data[11] = {
175         [VPE_PORT_LUMA1_IN] = {
176                 .channel        = VPE_CHAN_LUMA1_IN,
177                 .vb_index       = 0,
178                 .vb_part        = VPE_LUMA,
179         },
180         [VPE_PORT_CHROMA1_IN] = {
181                 .channel        = VPE_CHAN_CHROMA1_IN,
182                 .vb_index       = 0,
183                 .vb_part        = VPE_CHROMA,
184         },
185         [VPE_PORT_LUMA2_IN] = {
186                 .channel        = VPE_CHAN_LUMA2_IN,
187                 .vb_index       = 1,
188                 .vb_part        = VPE_LUMA,
189         },
190         [VPE_PORT_CHROMA2_IN] = {
191                 .channel        = VPE_CHAN_CHROMA2_IN,
192                 .vb_index       = 1,
193                 .vb_part        = VPE_CHROMA,
194         },
195         [VPE_PORT_LUMA3_IN] = {
196                 .channel        = VPE_CHAN_LUMA3_IN,
197                 .vb_index       = 2,
198                 .vb_part        = VPE_LUMA,
199         },
200         [VPE_PORT_CHROMA3_IN] = {
201                 .channel        = VPE_CHAN_CHROMA3_IN,
202                 .vb_index       = 2,
203                 .vb_part        = VPE_CHROMA,
204         },
205         [VPE_PORT_MV_IN] = {
206                 .channel        = VPE_CHAN_MV_IN,
207         },
208         [VPE_PORT_MV_OUT] = {
209                 .channel        = VPE_CHAN_MV_OUT,
210         },
211         [VPE_PORT_LUMA_OUT] = {
212                 .channel        = VPE_CHAN_LUMA_OUT,
213                 .vb_part        = VPE_LUMA,
214         },
215         [VPE_PORT_CHROMA_OUT] = {
216                 .channel        = VPE_CHAN_CHROMA_OUT,
217                 .vb_part        = VPE_CHROMA,
218         },
219         [VPE_PORT_RGB_OUT] = {
220                 .channel        = VPE_CHAN_RGB_OUT,
221                 .vb_part        = VPE_LUMA,
222         },
223 };
224 
225 
226 /* driver info for each of the supported video formats */
227 struct vpe_fmt {
228         char    *name;                  /* human-readable name */
229         u32     fourcc;                 /* standard format identifier */
230         u8      types;                  /* CAPTURE and/or OUTPUT */
231         u8      coplanar;               /* set for unpacked Luma and Chroma */
232         /* vpdma format info for each plane */
233         struct vpdma_data_format const *vpdma_fmt[VPE_MAX_PLANES];
234 };
235 
236 static struct vpe_fmt vpe_formats[] = {
237         {
238                 .name           = "YUV 422 co-planar",
239                 .fourcc         = V4L2_PIX_FMT_NV16,
240                 .types          = VPE_FMT_TYPE_CAPTURE | VPE_FMT_TYPE_OUTPUT,
241                 .coplanar       = 1,
242                 .vpdma_fmt      = { &vpdma_yuv_fmts[VPDMA_DATA_FMT_Y444],
243                                     &vpdma_yuv_fmts[VPDMA_DATA_FMT_C444],
244                                   },
245         },
246         {
247                 .name           = "YUV 420 co-planar",
248                 .fourcc         = V4L2_PIX_FMT_NV12,
249                 .types          = VPE_FMT_TYPE_CAPTURE | VPE_FMT_TYPE_OUTPUT,
250                 .coplanar       = 1,
251                 .vpdma_fmt      = { &vpdma_yuv_fmts[VPDMA_DATA_FMT_Y420],
252                                     &vpdma_yuv_fmts[VPDMA_DATA_FMT_C420],
253                                   },
254         },
255         {
256                 .name           = "YUYV 422 packed",
257                 .fourcc         = V4L2_PIX_FMT_YUYV,
258                 .types          = VPE_FMT_TYPE_CAPTURE | VPE_FMT_TYPE_OUTPUT,
259                 .coplanar       = 0,
260                 .vpdma_fmt      = { &vpdma_yuv_fmts[VPDMA_DATA_FMT_YC422],
261                                   },
262         },
263         {
264                 .name           = "UYVY 422 packed",
265                 .fourcc         = V4L2_PIX_FMT_UYVY,
266                 .types          = VPE_FMT_TYPE_CAPTURE | VPE_FMT_TYPE_OUTPUT,
267                 .coplanar       = 0,
268                 .vpdma_fmt      = { &vpdma_yuv_fmts[VPDMA_DATA_FMT_CY422],
269                                   },
270         },
271         {
272                 .name           = "RGB888 packed",
273                 .fourcc         = V4L2_PIX_FMT_RGB24,
274                 .types          = VPE_FMT_TYPE_CAPTURE,
275                 .coplanar       = 0,
276                 .vpdma_fmt      = { &vpdma_rgb_fmts[VPDMA_DATA_FMT_RGB24],
277                                   },
278         },
279         {
280                 .name           = "ARGB32",
281                 .fourcc         = V4L2_PIX_FMT_RGB32,
282                 .types          = VPE_FMT_TYPE_CAPTURE,
283                 .coplanar       = 0,
284                 .vpdma_fmt      = { &vpdma_rgb_fmts[VPDMA_DATA_FMT_ARGB32],
285                                   },
286         },
287         {
288                 .name           = "BGR888 packed",
289                 .fourcc         = V4L2_PIX_FMT_BGR24,
290                 .types          = VPE_FMT_TYPE_CAPTURE,
291                 .coplanar       = 0,
292                 .vpdma_fmt      = { &vpdma_rgb_fmts[VPDMA_DATA_FMT_BGR24],
293                                   },
294         },
295         {
296                 .name           = "ABGR32",
297                 .fourcc         = V4L2_PIX_FMT_BGR32,
298                 .types          = VPE_FMT_TYPE_CAPTURE,
299                 .coplanar       = 0,
300                 .vpdma_fmt      = { &vpdma_rgb_fmts[VPDMA_DATA_FMT_ABGR32],
301                                   },
302         },
303 };
304 
305 /*
306  * per-queue, driver-specific private data.
307  * there is one source queue and one destination queue for each m2m context.
308  */
309 struct vpe_q_data {
310         unsigned int            width;                          /* frame width */
311         unsigned int            height;                         /* frame height */
312         unsigned int            bytesperline[VPE_MAX_PLANES];   /* bytes per line in memory */
313         enum v4l2_colorspace    colorspace;
314         enum v4l2_field         field;                          /* supported field value */
315         unsigned int            flags;
316         unsigned int            sizeimage[VPE_MAX_PLANES];      /* image size in memory */
317         struct v4l2_rect        c_rect;                         /* crop/compose rectangle */
318         struct vpe_fmt          *fmt;                           /* format info */
319 };
320 
321 /* vpe_q_data flag bits */
322 #define Q_DATA_FRAME_1D         (1 << 0)
323 #define Q_DATA_MODE_TILED       (1 << 1)
324 #define Q_DATA_INTERLACED       (1 << 2)
325 
326 enum {
327         Q_DATA_SRC = 0,
328         Q_DATA_DST = 1,
329 };
330 
331 /* find our format description corresponding to the passed v4l2_format */
332 static struct vpe_fmt *find_format(struct v4l2_format *f)
333 {
334         struct vpe_fmt *fmt;
335         unsigned int k;
336 
337         for (k = 0; k < ARRAY_SIZE(vpe_formats); k++) {
338                 fmt = &vpe_formats[k];
339                 if (fmt->fourcc == f->fmt.pix.pixelformat)
340                         return fmt;
341         }
342 
343         return NULL;
344 }
345 
346 /*
347  * there is one vpe_dev structure in the driver, it is shared by
348  * all instances.
349  */
350 struct vpe_dev {
351         struct v4l2_device      v4l2_dev;
352         struct video_device     vfd;
353         struct v4l2_m2m_dev     *m2m_dev;
354 
355         atomic_t                num_instances;  /* count of driver instances */
356         dma_addr_t              loaded_mmrs;    /* shadow mmrs in device */
357         struct mutex            dev_mutex;
358         spinlock_t              lock;
359 
360         int                     irq;
361         void __iomem            *base;
362         struct resource         *res;
363 
364         struct vb2_alloc_ctx    *alloc_ctx;
365         struct vpdma_data       *vpdma;         /* vpdma data handle */
366         struct sc_data          *sc;            /* scaler data handle */
367         struct csc_data         *csc;           /* csc data handle */
368 };
369 
370 /*
371  * There is one vpe_ctx structure for each m2m context.
372  */
373 struct vpe_ctx {
374         struct v4l2_fh          fh;
375         struct vpe_dev          *dev;
376         struct v4l2_m2m_ctx     *m2m_ctx;
377         struct v4l2_ctrl_handler hdl;
378 
379         unsigned int            field;                  /* current field */
380         unsigned int            sequence;               /* current frame/field seq */
381         unsigned int            aborting;               /* abort after next irq */
382 
383         unsigned int            bufs_per_job;           /* input buffers per batch */
384         unsigned int            bufs_completed;         /* bufs done in this batch */
385 
386         struct vpe_q_data       q_data[2];              /* src & dst queue data */
387         struct vb2_buffer       *src_vbs[VPE_MAX_SRC_BUFS];
388         struct vb2_buffer       *dst_vb;
389 
390         dma_addr_t              mv_buf_dma[2];          /* dma addrs of motion vector in/out bufs */
391         void                    *mv_buf[2];             /* virtual addrs of motion vector bufs */
392         size_t                  mv_buf_size;            /* current motion vector buffer size */
393         struct vpdma_buf        mmr_adb;                /* shadow reg addr/data block */
394         struct vpdma_buf        sc_coeff_h;             /* h coeff buffer */
395         struct vpdma_buf        sc_coeff_v;             /* v coeff buffer */
396         struct vpdma_desc_list  desc_list;              /* DMA descriptor list */
397 
398         bool                    deinterlacing;          /* using de-interlacer */
399         bool                    load_mmrs;              /* have new shadow reg values */
400 
401         unsigned int            src_mv_buf_selector;
402 };
403 
404 
405 /*
406  * M2M devices get 2 queues.
407  * Return the queue given the type.
408  */
409 static struct vpe_q_data *get_q_data(struct vpe_ctx *ctx,
410                                      enum v4l2_buf_type type)
411 {
412         switch (type) {
413         case V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE:
414         case V4L2_BUF_TYPE_VIDEO_OUTPUT:
415                 return &ctx->q_data[Q_DATA_SRC];
416         case V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE:
417         case V4L2_BUF_TYPE_VIDEO_CAPTURE:
418                 return &ctx->q_data[Q_DATA_DST];
419         default:
420                 BUG();
421         }
422         return NULL;
423 }
424 
425 static u32 read_reg(struct vpe_dev *dev, int offset)
426 {
427         return ioread32(dev->base + offset);
428 }
429 
430 static void write_reg(struct vpe_dev *dev, int offset, u32 value)
431 {
432         iowrite32(value, dev->base + offset);
433 }
434 
435 /* register field read/write helpers */
436 static int get_field(u32 value, u32 mask, int shift)
437 {
438         return (value & (mask << shift)) >> shift;
439 }
440 
441 static int read_field_reg(struct vpe_dev *dev, int offset, u32 mask, int shift)
442 {
443         return get_field(read_reg(dev, offset), mask, shift);
444 }
445 
446 static void write_field(u32 *valp, u32 field, u32 mask, int shift)
447 {
448         u32 val = *valp;
449 
450         val &= ~(mask << shift);
451         val |= (field & mask) << shift;
452         *valp = val;
453 }
454 
455 static void write_field_reg(struct vpe_dev *dev, int offset, u32 field,
456                 u32 mask, int shift)
457 {
458         u32 val = read_reg(dev, offset);
459 
460         write_field(&val, field, mask, shift);
461 
462         write_reg(dev, offset, val);
463 }
464 
465 /*
466  * DMA address/data block for the shadow registers
467  */
468 struct vpe_mmr_adb {
469         struct vpdma_adb_hdr    out_fmt_hdr;
470         u32                     out_fmt_reg[1];
471         u32                     out_fmt_pad[3];
472         struct vpdma_adb_hdr    us1_hdr;
473         u32                     us1_regs[8];
474         struct vpdma_adb_hdr    us2_hdr;
475         u32                     us2_regs[8];
476         struct vpdma_adb_hdr    us3_hdr;
477         u32                     us3_regs[8];
478         struct vpdma_adb_hdr    dei_hdr;
479         u32                     dei_regs[8];
480         struct vpdma_adb_hdr    sc_hdr0;
481         u32                     sc_regs0[7];
482         u32                     sc_pad0[1];
483         struct vpdma_adb_hdr    sc_hdr8;
484         u32                     sc_regs8[6];
485         u32                     sc_pad8[2];
486         struct vpdma_adb_hdr    sc_hdr17;
487         u32                     sc_regs17[9];
488         u32                     sc_pad17[3];
489         struct vpdma_adb_hdr    csc_hdr;
490         u32                     csc_regs[6];
491         u32                     csc_pad[2];
492 };
493 
494 #define GET_OFFSET_TOP(ctx, obj, reg)   \
495         ((obj)->res->start - ctx->dev->res->start + reg)
496 
497 #define VPE_SET_MMR_ADB_HDR(ctx, hdr, regs, offset_a)   \
498         VPDMA_SET_MMR_ADB_HDR(ctx->mmr_adb, vpe_mmr_adb, hdr, regs, offset_a)
499 /*
500  * Set the headers for all of the address/data block structures.
501  */
502 static void init_adb_hdrs(struct vpe_ctx *ctx)
503 {
504         VPE_SET_MMR_ADB_HDR(ctx, out_fmt_hdr, out_fmt_reg, VPE_CLK_FORMAT_SELECT);
505         VPE_SET_MMR_ADB_HDR(ctx, us1_hdr, us1_regs, VPE_US1_R0);
506         VPE_SET_MMR_ADB_HDR(ctx, us2_hdr, us2_regs, VPE_US2_R0);
507         VPE_SET_MMR_ADB_HDR(ctx, us3_hdr, us3_regs, VPE_US3_R0);
508         VPE_SET_MMR_ADB_HDR(ctx, dei_hdr, dei_regs, VPE_DEI_FRAME_SIZE);
509         VPE_SET_MMR_ADB_HDR(ctx, sc_hdr0, sc_regs0,
510                 GET_OFFSET_TOP(ctx, ctx->dev->sc, CFG_SC0));
511         VPE_SET_MMR_ADB_HDR(ctx, sc_hdr8, sc_regs8,
512                 GET_OFFSET_TOP(ctx, ctx->dev->sc, CFG_SC8));
513         VPE_SET_MMR_ADB_HDR(ctx, sc_hdr17, sc_regs17,
514                 GET_OFFSET_TOP(ctx, ctx->dev->sc, CFG_SC17));
515         VPE_SET_MMR_ADB_HDR(ctx, csc_hdr, csc_regs,
516                 GET_OFFSET_TOP(ctx, ctx->dev->csc, CSC_CSC00));
517 };
518 
519 /*
520  * Allocate or re-allocate the motion vector DMA buffers
521  * There are two buffers, one for input and one for output.
522  * However, the roles are reversed after each field is processed.
523  * In other words, after each field is processed, the previous
524  * output (dst) MV buffer becomes the new input (src) MV buffer.
525  */
526 static int realloc_mv_buffers(struct vpe_ctx *ctx, size_t size)
527 {
528         struct device *dev = ctx->dev->v4l2_dev.dev;
529 
530         if (ctx->mv_buf_size == size)
531                 return 0;
532 
533         if (ctx->mv_buf[0])
534                 dma_free_coherent(dev, ctx->mv_buf_size, ctx->mv_buf[0],
535                         ctx->mv_buf_dma[0]);
536 
537         if (ctx->mv_buf[1])
538                 dma_free_coherent(dev, ctx->mv_buf_size, ctx->mv_buf[1],
539                         ctx->mv_buf_dma[1]);
540 
541         if (size == 0)
542                 return 0;
543 
544         ctx->mv_buf[0] = dma_alloc_coherent(dev, size, &ctx->mv_buf_dma[0],
545                                 GFP_KERNEL);
546         if (!ctx->mv_buf[0]) {
547                 vpe_err(ctx->dev, "failed to allocate motion vector buffer\n");
548                 return -ENOMEM;
549         }
550 
551         ctx->mv_buf[1] = dma_alloc_coherent(dev, size, &ctx->mv_buf_dma[1],
552                                 GFP_KERNEL);
553         if (!ctx->mv_buf[1]) {
554                 vpe_err(ctx->dev, "failed to allocate motion vector buffer\n");
555                 dma_free_coherent(dev, size, ctx->mv_buf[0],
556                         ctx->mv_buf_dma[0]);
557 
558                 return -ENOMEM;
559         }
560 
561         ctx->mv_buf_size = size;
562         ctx->src_mv_buf_selector = 0;
563 
564         return 0;
565 }
566 
567 static void free_mv_buffers(struct vpe_ctx *ctx)
568 {
569         realloc_mv_buffers(ctx, 0);
570 }
571 
572 /*
573  * While de-interlacing, we keep the two most recent input buffers
574  * around.  This function frees those two buffers when we have
575  * finished processing the current stream.
576  */
577 static void free_vbs(struct vpe_ctx *ctx)
578 {
579         struct vpe_dev *dev = ctx->dev;
580         unsigned long flags;
581 
582         if (ctx->src_vbs[2] == NULL)
583                 return;
584 
585         spin_lock_irqsave(&dev->lock, flags);
586         if (ctx->src_vbs[2]) {
587                 v4l2_m2m_buf_done(ctx->src_vbs[2], VB2_BUF_STATE_DONE);
588                 v4l2_m2m_buf_done(ctx->src_vbs[1], VB2_BUF_STATE_DONE);
589         }
590         spin_unlock_irqrestore(&dev->lock, flags);
591 }
592 
593 /*
594  * Enable or disable the VPE clocks
595  */
596 static void vpe_set_clock_enable(struct vpe_dev *dev, bool on)
597 {
598         u32 val = 0;
599 
600         if (on)
601                 val = VPE_DATA_PATH_CLK_ENABLE | VPE_VPEDMA_CLK_ENABLE;
602         write_reg(dev, VPE_CLK_ENABLE, val);
603 }
604 
605 static void vpe_top_reset(struct vpe_dev *dev)
606 {
607 
608         write_field_reg(dev, VPE_CLK_RESET, 1, VPE_DATA_PATH_CLK_RESET_MASK,
609                 VPE_DATA_PATH_CLK_RESET_SHIFT);
610 
611         usleep_range(100, 150);
612 
613         write_field_reg(dev, VPE_CLK_RESET, 0, VPE_DATA_PATH_CLK_RESET_MASK,
614                 VPE_DATA_PATH_CLK_RESET_SHIFT);
615 }
616 
617 static void vpe_top_vpdma_reset(struct vpe_dev *dev)
618 {
619         write_field_reg(dev, VPE_CLK_RESET, 1, VPE_VPDMA_CLK_RESET_MASK,
620                 VPE_VPDMA_CLK_RESET_SHIFT);
621 
622         usleep_range(100, 150);
623 
624         write_field_reg(dev, VPE_CLK_RESET, 0, VPE_VPDMA_CLK_RESET_MASK,
625                 VPE_VPDMA_CLK_RESET_SHIFT);
626 }
627 
628 /*
629  * Load the correct of upsampler coefficients into the shadow MMRs
630  */
631 static void set_us_coefficients(struct vpe_ctx *ctx)
632 {
633         struct vpe_mmr_adb *mmr_adb = ctx->mmr_adb.addr;
634         struct vpe_q_data *s_q_data = &ctx->q_data[Q_DATA_SRC];
635         u32 *us1_reg = &mmr_adb->us1_regs[0];
636         u32 *us2_reg = &mmr_adb->us2_regs[0];
637         u32 *us3_reg = &mmr_adb->us3_regs[0];
638         const unsigned short *cp, *end_cp;
639 
640         cp = &us_coeffs[0].anchor_fid0_c0;
641 
642         if (s_q_data->flags & Q_DATA_INTERLACED)        /* interlaced */
643                 cp += sizeof(us_coeffs[0]) / sizeof(*cp);
644 
645         end_cp = cp + sizeof(us_coeffs[0]) / sizeof(*cp);
646 
647         while (cp < end_cp) {
648                 write_field(us1_reg, *cp++, VPE_US_C0_MASK, VPE_US_C0_SHIFT);
649                 write_field(us1_reg, *cp++, VPE_US_C1_MASK, VPE_US_C1_SHIFT);
650                 *us2_reg++ = *us1_reg;
651                 *us3_reg++ = *us1_reg++;
652         }
653         ctx->load_mmrs = true;
654 }
655 
656 /*
657  * Set the upsampler config mode and the VPDMA line mode in the shadow MMRs.
658  */
659 static void set_cfg_and_line_modes(struct vpe_ctx *ctx)
660 {
661         struct vpe_fmt *fmt = ctx->q_data[Q_DATA_SRC].fmt;
662         struct vpe_mmr_adb *mmr_adb = ctx->mmr_adb.addr;
663         u32 *us1_reg0 = &mmr_adb->us1_regs[0];
664         u32 *us2_reg0 = &mmr_adb->us2_regs[0];
665         u32 *us3_reg0 = &mmr_adb->us3_regs[0];
666         int line_mode = 1;
667         int cfg_mode = 1;
668 
669         /*
670          * Cfg Mode 0: YUV420 source, enable upsampler, DEI is de-interlacing.
671          * Cfg Mode 1: YUV422 source, disable upsampler, DEI is de-interlacing.
672          */
673 
674         if (fmt->fourcc == V4L2_PIX_FMT_NV12) {
675                 cfg_mode = 0;
676                 line_mode = 0;          /* double lines to line buffer */
677         }
678 
679         write_field(us1_reg0, cfg_mode, VPE_US_MODE_MASK, VPE_US_MODE_SHIFT);
680         write_field(us2_reg0, cfg_mode, VPE_US_MODE_MASK, VPE_US_MODE_SHIFT);
681         write_field(us3_reg0, cfg_mode, VPE_US_MODE_MASK, VPE_US_MODE_SHIFT);
682 
683         /* regs for now */
684         vpdma_set_line_mode(ctx->dev->vpdma, line_mode, VPE_CHAN_CHROMA1_IN);
685         vpdma_set_line_mode(ctx->dev->vpdma, line_mode, VPE_CHAN_CHROMA2_IN);
686         vpdma_set_line_mode(ctx->dev->vpdma, line_mode, VPE_CHAN_CHROMA3_IN);
687 
688         /* frame start for input luma */
689         vpdma_set_frame_start_event(ctx->dev->vpdma, VPDMA_FSEVENT_CHANNEL_ACTIVE,
690                 VPE_CHAN_LUMA1_IN);
691         vpdma_set_frame_start_event(ctx->dev->vpdma, VPDMA_FSEVENT_CHANNEL_ACTIVE,
692                 VPE_CHAN_LUMA2_IN);
693         vpdma_set_frame_start_event(ctx->dev->vpdma, VPDMA_FSEVENT_CHANNEL_ACTIVE,
694                 VPE_CHAN_LUMA3_IN);
695 
696         /* frame start for input chroma */
697         vpdma_set_frame_start_event(ctx->dev->vpdma, VPDMA_FSEVENT_CHANNEL_ACTIVE,
698                 VPE_CHAN_CHROMA1_IN);
699         vpdma_set_frame_start_event(ctx->dev->vpdma, VPDMA_FSEVENT_CHANNEL_ACTIVE,
700                 VPE_CHAN_CHROMA2_IN);
701         vpdma_set_frame_start_event(ctx->dev->vpdma, VPDMA_FSEVENT_CHANNEL_ACTIVE,
702                 VPE_CHAN_CHROMA3_IN);
703 
704         /* frame start for MV in client */
705         vpdma_set_frame_start_event(ctx->dev->vpdma, VPDMA_FSEVENT_CHANNEL_ACTIVE,
706                 VPE_CHAN_MV_IN);
707 
708         ctx->load_mmrs = true;
709 }
710 
711 /*
712  * Set the shadow registers that are modified when the source
713  * format changes.
714  */
715 static void set_src_registers(struct vpe_ctx *ctx)
716 {
717         set_us_coefficients(ctx);
718 }
719 
720 /*
721  * Set the shadow registers that are modified when the destination
722  * format changes.
723  */
724 static void set_dst_registers(struct vpe_ctx *ctx)
725 {
726         struct vpe_mmr_adb *mmr_adb = ctx->mmr_adb.addr;
727         enum v4l2_colorspace clrspc = ctx->q_data[Q_DATA_DST].colorspace;
728         struct vpe_fmt *fmt = ctx->q_data[Q_DATA_DST].fmt;
729         u32 val = 0;
730 
731         if (clrspc == V4L2_COLORSPACE_SRGB)
732                 val |= VPE_RGB_OUT_SELECT;
733         else if (fmt->fourcc == V4L2_PIX_FMT_NV16)
734                 val |= VPE_COLOR_SEPARATE_422;
735 
736         /*
737          * the source of CHR_DS and CSC is always the scaler, irrespective of
738          * whether it's used or not
739          */
740         val |= VPE_DS_SRC_DEI_SCALER | VPE_CSC_SRC_DEI_SCALER;
741 
742         if (fmt->fourcc != V4L2_PIX_FMT_NV12)
743                 val |= VPE_DS_BYPASS;
744 
745         mmr_adb->out_fmt_reg[0] = val;
746 
747         ctx->load_mmrs = true;
748 }
749 
750 /*
751  * Set the de-interlacer shadow register values
752  */
753 static void set_dei_regs(struct vpe_ctx *ctx)
754 {
755         struct vpe_mmr_adb *mmr_adb = ctx->mmr_adb.addr;
756         struct vpe_q_data *s_q_data = &ctx->q_data[Q_DATA_SRC];
757         unsigned int src_h = s_q_data->c_rect.height;
758         unsigned int src_w = s_q_data->c_rect.width;
759         u32 *dei_mmr0 = &mmr_adb->dei_regs[0];
760         bool deinterlace = true;
761         u32 val = 0;
762 
763         /*
764          * according to TRM, we should set DEI in progressive bypass mode when
765          * the input content is progressive, however, DEI is bypassed correctly
766          * for both progressive and interlace content in interlace bypass mode.
767          * It has been recommended not to use progressive bypass mode.
768          */
769         if ((!ctx->deinterlacing && (s_q_data->flags & Q_DATA_INTERLACED)) ||
770                         !(s_q_data->flags & Q_DATA_INTERLACED)) {
771                 deinterlace = false;
772                 val = VPE_DEI_INTERLACE_BYPASS;
773         }
774 
775         src_h = deinterlace ? src_h * 2 : src_h;
776 
777         val |= (src_h << VPE_DEI_HEIGHT_SHIFT) |
778                 (src_w << VPE_DEI_WIDTH_SHIFT) |
779                 VPE_DEI_FIELD_FLUSH;
780 
781         *dei_mmr0 = val;
782 
783         ctx->load_mmrs = true;
784 }
785 
786 static void set_dei_shadow_registers(struct vpe_ctx *ctx)
787 {
788         struct vpe_mmr_adb *mmr_adb = ctx->mmr_adb.addr;
789         u32 *dei_mmr = &mmr_adb->dei_regs[0];
790         const struct vpe_dei_regs *cur = &dei_regs;
791 
792         dei_mmr[2]  = cur->mdt_spacial_freq_thr_reg;
793         dei_mmr[3]  = cur->edi_config_reg;
794         dei_mmr[4]  = cur->edi_lut_reg0;
795         dei_mmr[5]  = cur->edi_lut_reg1;
796         dei_mmr[6]  = cur->edi_lut_reg2;
797         dei_mmr[7]  = cur->edi_lut_reg3;
798 
799         ctx->load_mmrs = true;
800 }
801 
802 /*
803  * Set the shadow registers whose values are modified when either the
804  * source or destination format is changed.
805  */
806 static int set_srcdst_params(struct vpe_ctx *ctx)
807 {
808         struct vpe_q_data *s_q_data =  &ctx->q_data[Q_DATA_SRC];
809         struct vpe_q_data *d_q_data =  &ctx->q_data[Q_DATA_DST];
810         struct vpe_mmr_adb *mmr_adb = ctx->mmr_adb.addr;
811         unsigned int src_w = s_q_data->c_rect.width;
812         unsigned int src_h = s_q_data->c_rect.height;
813         unsigned int dst_w = d_q_data->c_rect.width;
814         unsigned int dst_h = d_q_data->c_rect.height;
815         size_t mv_buf_size;
816         int ret;
817 
818         ctx->sequence = 0;
819         ctx->field = V4L2_FIELD_TOP;
820 
821         if ((s_q_data->flags & Q_DATA_INTERLACED) &&
822                         !(d_q_data->flags & Q_DATA_INTERLACED)) {
823                 int bytes_per_line;
824                 const struct vpdma_data_format *mv =
825                         &vpdma_misc_fmts[VPDMA_DATA_FMT_MV];
826 
827                 /*
828                  * we make sure that the source image has a 16 byte aligned
829                  * stride, we need to do the same for the motion vector buffer
830                  * by aligning it's stride to the next 16 byte boundry. this
831                  * extra space will not be used by the de-interlacer, but will
832                  * ensure that vpdma operates correctly
833                  */
834                 bytes_per_line = ALIGN((s_q_data->width * mv->depth) >> 3,
835                                         VPDMA_STRIDE_ALIGN);
836                 mv_buf_size = bytes_per_line * s_q_data->height;
837 
838                 ctx->deinterlacing = true;
839                 src_h <<= 1;
840         } else {
841                 ctx->deinterlacing = false;
842                 mv_buf_size = 0;
843         }
844 
845         free_vbs(ctx);
846 
847         ret = realloc_mv_buffers(ctx, mv_buf_size);
848         if (ret)
849                 return ret;
850 
851         set_cfg_and_line_modes(ctx);
852         set_dei_regs(ctx);
853 
854         csc_set_coeff(ctx->dev->csc, &mmr_adb->csc_regs[0],
855                 s_q_data->colorspace, d_q_data->colorspace);
856 
857         sc_set_hs_coeffs(ctx->dev->sc, ctx->sc_coeff_h.addr, src_w, dst_w);
858         sc_set_vs_coeffs(ctx->dev->sc, ctx->sc_coeff_v.addr, src_h, dst_h);
859 
860         sc_config_scaler(ctx->dev->sc, &mmr_adb->sc_regs0[0],
861                 &mmr_adb->sc_regs8[0], &mmr_adb->sc_regs17[0],
862                 src_w, src_h, dst_w, dst_h);
863 
864         return 0;
865 }
866 
867 /*
868  * Return the vpe_ctx structure for a given struct file
869  */
870 static struct vpe_ctx *file2ctx(struct file *file)
871 {
872         return container_of(file->private_data, struct vpe_ctx, fh);
873 }
874 
875 /*
876  * mem2mem callbacks
877  */
878 
879 /**
880  * job_ready() - check whether an instance is ready to be scheduled to run
881  */
882 static int job_ready(void *priv)
883 {
884         struct vpe_ctx *ctx = priv;
885         int needed = ctx->bufs_per_job;
886 
887         if (ctx->deinterlacing && ctx->src_vbs[2] == NULL)
888                 needed += 2;    /* need additional two most recent fields */
889 
890         if (v4l2_m2m_num_src_bufs_ready(ctx->m2m_ctx) < needed)
891                 return 0;
892 
893         if (v4l2_m2m_num_dst_bufs_ready(ctx->m2m_ctx) < needed)
894                 return 0;
895 
896         return 1;
897 }
898 
899 static void job_abort(void *priv)
900 {
901         struct vpe_ctx *ctx = priv;
902 
903         /* Will cancel the transaction in the next interrupt handler */
904         ctx->aborting = 1;
905 }
906 
907 /*
908  * Lock access to the device
909  */
910 static void vpe_lock(void *priv)
911 {
912         struct vpe_ctx *ctx = priv;
913         struct vpe_dev *dev = ctx->dev;
914         mutex_lock(&dev->dev_mutex);
915 }
916 
917 static void vpe_unlock(void *priv)
918 {
919         struct vpe_ctx *ctx = priv;
920         struct vpe_dev *dev = ctx->dev;
921         mutex_unlock(&dev->dev_mutex);
922 }
923 
924 static void vpe_dump_regs(struct vpe_dev *dev)
925 {
926 #define DUMPREG(r) vpe_dbg(dev, "%-35s %08x\n", #r, read_reg(dev, VPE_##r))
927 
928         vpe_dbg(dev, "VPE Registers:\n");
929 
930         DUMPREG(PID);
931         DUMPREG(SYSCONFIG);
932         DUMPREG(INT0_STATUS0_RAW);
933         DUMPREG(INT0_STATUS0);
934         DUMPREG(INT0_ENABLE0);
935         DUMPREG(INT0_STATUS1_RAW);
936         DUMPREG(INT0_STATUS1);
937         DUMPREG(INT0_ENABLE1);
938         DUMPREG(CLK_ENABLE);
939         DUMPREG(CLK_RESET);
940         DUMPREG(CLK_FORMAT_SELECT);
941         DUMPREG(CLK_RANGE_MAP);
942         DUMPREG(US1_R0);
943         DUMPREG(US1_R1);
944         DUMPREG(US1_R2);
945         DUMPREG(US1_R3);
946         DUMPREG(US1_R4);
947         DUMPREG(US1_R5);
948         DUMPREG(US1_R6);
949         DUMPREG(US1_R7);
950         DUMPREG(US2_R0);
951         DUMPREG(US2_R1);
952         DUMPREG(US2_R2);
953         DUMPREG(US2_R3);
954         DUMPREG(US2_R4);
955         DUMPREG(US2_R5);
956         DUMPREG(US2_R6);
957         DUMPREG(US2_R7);
958         DUMPREG(US3_R0);
959         DUMPREG(US3_R1);
960         DUMPREG(US3_R2);
961         DUMPREG(US3_R3);
962         DUMPREG(US3_R4);
963         DUMPREG(US3_R5);
964         DUMPREG(US3_R6);
965         DUMPREG(US3_R7);
966         DUMPREG(DEI_FRAME_SIZE);
967         DUMPREG(MDT_BYPASS);
968         DUMPREG(MDT_SF_THRESHOLD);
969         DUMPREG(EDI_CONFIG);
970         DUMPREG(DEI_EDI_LUT_R0);
971         DUMPREG(DEI_EDI_LUT_R1);
972         DUMPREG(DEI_EDI_LUT_R2);
973         DUMPREG(DEI_EDI_LUT_R3);
974         DUMPREG(DEI_FMD_WINDOW_R0);
975         DUMPREG(DEI_FMD_WINDOW_R1);
976         DUMPREG(DEI_FMD_CONTROL_R0);
977         DUMPREG(DEI_FMD_CONTROL_R1);
978         DUMPREG(DEI_FMD_STATUS_R0);
979         DUMPREG(DEI_FMD_STATUS_R1);
980         DUMPREG(DEI_FMD_STATUS_R2);
981 #undef DUMPREG
982 
983         sc_dump_regs(dev->sc);
984         csc_dump_regs(dev->csc);
985 }
986 
987 static void add_out_dtd(struct vpe_ctx *ctx, int port)
988 {
989         struct vpe_q_data *q_data = &ctx->q_data[Q_DATA_DST];
990         const struct vpe_port_data *p_data = &port_data[port];
991         struct vb2_buffer *vb = ctx->dst_vb;
992         struct vpe_fmt *fmt = q_data->fmt;
993         const struct vpdma_data_format *vpdma_fmt;
994         int mv_buf_selector = !ctx->src_mv_buf_selector;
995         dma_addr_t dma_addr;
996         u32 flags = 0;
997 
998         if (port == VPE_PORT_MV_OUT) {
999                 vpdma_fmt = &vpdma_misc_fmts[VPDMA_DATA_FMT_MV];
1000                 dma_addr = ctx->mv_buf_dma[mv_buf_selector];
1001         } else {
1002                 /* to incorporate interleaved formats */
1003                 int plane = fmt->coplanar ? p_data->vb_part : 0;
1004 
1005                 vpdma_fmt = fmt->vpdma_fmt[plane];
1006                 dma_addr = vb2_dma_contig_plane_dma_addr(vb, plane);
1007                 if (!dma_addr) {
1008                         vpe_err(ctx->dev,
1009                                 "acquiring output buffer(%d) dma_addr failed\n",
1010                                 port);
1011                         return;
1012                 }
1013         }
1014 
1015         if (q_data->flags & Q_DATA_FRAME_1D)
1016                 flags |= VPDMA_DATA_FRAME_1D;
1017         if (q_data->flags & Q_DATA_MODE_TILED)
1018                 flags |= VPDMA_DATA_MODE_TILED;
1019 
1020         vpdma_add_out_dtd(&ctx->desc_list, q_data->width, &q_data->c_rect,
1021                 vpdma_fmt, dma_addr, p_data->channel, flags);
1022 }
1023 
1024 static void add_in_dtd(struct vpe_ctx *ctx, int port)
1025 {
1026         struct vpe_q_data *q_data = &ctx->q_data[Q_DATA_SRC];
1027         const struct vpe_port_data *p_data = &port_data[port];
1028         struct vb2_buffer *vb = ctx->src_vbs[p_data->vb_index];
1029         struct vpe_fmt *fmt = q_data->fmt;
1030         const struct vpdma_data_format *vpdma_fmt;
1031         int mv_buf_selector = ctx->src_mv_buf_selector;
1032         int field = vb->v4l2_buf.field == V4L2_FIELD_BOTTOM;
1033         int frame_width, frame_height;
1034         dma_addr_t dma_addr;
1035         u32 flags = 0;
1036 
1037         if (port == VPE_PORT_MV_IN) {
1038                 vpdma_fmt = &vpdma_misc_fmts[VPDMA_DATA_FMT_MV];
1039                 dma_addr = ctx->mv_buf_dma[mv_buf_selector];
1040         } else {
1041                 /* to incorporate interleaved formats */
1042                 int plane = fmt->coplanar ? p_data->vb_part : 0;
1043 
1044                 vpdma_fmt = fmt->vpdma_fmt[plane];
1045 
1046                 dma_addr = vb2_dma_contig_plane_dma_addr(vb, plane);
1047                 if (!dma_addr) {
1048                         vpe_err(ctx->dev,
1049                                 "acquiring input buffer(%d) dma_addr failed\n",
1050                                 port);
1051                         return;
1052                 }
1053         }
1054 
1055         if (q_data->flags & Q_DATA_FRAME_1D)
1056                 flags |= VPDMA_DATA_FRAME_1D;
1057         if (q_data->flags & Q_DATA_MODE_TILED)
1058                 flags |= VPDMA_DATA_MODE_TILED;
1059 
1060         frame_width = q_data->c_rect.width;
1061         frame_height = q_data->c_rect.height;
1062 
1063         if (p_data->vb_part && fmt->fourcc == V4L2_PIX_FMT_NV12)
1064                 frame_height /= 2;
1065 
1066         vpdma_add_in_dtd(&ctx->desc_list, q_data->width, &q_data->c_rect,
1067                 vpdma_fmt, dma_addr, p_data->channel, field, flags, frame_width,
1068                 frame_height, 0, 0);
1069 }
1070 
1071 /*
1072  * Enable the expected IRQ sources
1073  */
1074 static void enable_irqs(struct vpe_ctx *ctx)
1075 {
1076         write_reg(ctx->dev, VPE_INT0_ENABLE0_SET, VPE_INT0_LIST0_COMPLETE);
1077         write_reg(ctx->dev, VPE_INT0_ENABLE1_SET, VPE_DEI_ERROR_INT |
1078                                 VPE_DS1_UV_ERROR_INT);
1079 
1080         vpdma_enable_list_complete_irq(ctx->dev->vpdma, 0, true);
1081 }
1082 
1083 static void disable_irqs(struct vpe_ctx *ctx)
1084 {
1085         write_reg(ctx->dev, VPE_INT0_ENABLE0_CLR, 0xffffffff);
1086         write_reg(ctx->dev, VPE_INT0_ENABLE1_CLR, 0xffffffff);
1087 
1088         vpdma_enable_list_complete_irq(ctx->dev->vpdma, 0, false);
1089 }
1090 
1091 /* device_run() - prepares and starts the device
1092  *
1093  * This function is only called when both the source and destination
1094  * buffers are in place.
1095  */
1096 static void device_run(void *priv)
1097 {
1098         struct vpe_ctx *ctx = priv;
1099         struct sc_data *sc = ctx->dev->sc;
1100         struct vpe_q_data *d_q_data = &ctx->q_data[Q_DATA_DST];
1101 
1102         if (ctx->deinterlacing && ctx->src_vbs[2] == NULL) {
1103                 ctx->src_vbs[2] = v4l2_m2m_src_buf_remove(ctx->m2m_ctx);
1104                 WARN_ON(ctx->src_vbs[2] == NULL);
1105                 ctx->src_vbs[1] = v4l2_m2m_src_buf_remove(ctx->m2m_ctx);
1106                 WARN_ON(ctx->src_vbs[1] == NULL);
1107         }
1108 
1109         ctx->src_vbs[0] = v4l2_m2m_src_buf_remove(ctx->m2m_ctx);
1110         WARN_ON(ctx->src_vbs[0] == NULL);
1111         ctx->dst_vb = v4l2_m2m_dst_buf_remove(ctx->m2m_ctx);
1112         WARN_ON(ctx->dst_vb == NULL);
1113 
1114         /* config descriptors */
1115         if (ctx->dev->loaded_mmrs != ctx->mmr_adb.dma_addr || ctx->load_mmrs) {
1116                 vpdma_map_desc_buf(ctx->dev->vpdma, &ctx->mmr_adb);
1117                 vpdma_add_cfd_adb(&ctx->desc_list, CFD_MMR_CLIENT, &ctx->mmr_adb);
1118                 ctx->dev->loaded_mmrs = ctx->mmr_adb.dma_addr;
1119                 ctx->load_mmrs = false;
1120         }
1121 
1122         if (sc->loaded_coeff_h != ctx->sc_coeff_h.dma_addr ||
1123                         sc->load_coeff_h) {
1124                 vpdma_map_desc_buf(ctx->dev->vpdma, &ctx->sc_coeff_h);
1125                 vpdma_add_cfd_block(&ctx->desc_list, CFD_SC_CLIENT,
1126                         &ctx->sc_coeff_h, 0);
1127 
1128                 sc->loaded_coeff_h = ctx->sc_coeff_h.dma_addr;
1129                 sc->load_coeff_h = false;
1130         }
1131 
1132         if (sc->loaded_coeff_v != ctx->sc_coeff_v.dma_addr ||
1133                         sc->load_coeff_v) {
1134                 vpdma_map_desc_buf(ctx->dev->vpdma, &ctx->sc_coeff_v);
1135                 vpdma_add_cfd_block(&ctx->desc_list, CFD_SC_CLIENT,
1136                         &ctx->sc_coeff_v, SC_COEF_SRAM_SIZE >> 4);
1137 
1138                 sc->loaded_coeff_v = ctx->sc_coeff_v.dma_addr;
1139                 sc->load_coeff_v = false;
1140         }
1141 
1142         /* output data descriptors */
1143         if (ctx->deinterlacing)
1144                 add_out_dtd(ctx, VPE_PORT_MV_OUT);
1145 
1146         if (d_q_data->colorspace == V4L2_COLORSPACE_SRGB) {
1147                 add_out_dtd(ctx, VPE_PORT_RGB_OUT);
1148         } else {
1149                 add_out_dtd(ctx, VPE_PORT_LUMA_OUT);
1150                 if (d_q_data->fmt->coplanar)
1151                         add_out_dtd(ctx, VPE_PORT_CHROMA_OUT);
1152         }
1153 
1154         /* input data descriptors */
1155         if (ctx->deinterlacing) {
1156                 add_in_dtd(ctx, VPE_PORT_LUMA3_IN);
1157                 add_in_dtd(ctx, VPE_PORT_CHROMA3_IN);
1158 
1159                 add_in_dtd(ctx, VPE_PORT_LUMA2_IN);
1160                 add_in_dtd(ctx, VPE_PORT_CHROMA2_IN);
1161         }
1162 
1163         add_in_dtd(ctx, VPE_PORT_LUMA1_IN);
1164         add_in_dtd(ctx, VPE_PORT_CHROMA1_IN);
1165 
1166         if (ctx->deinterlacing)
1167                 add_in_dtd(ctx, VPE_PORT_MV_IN);
1168 
1169         /* sync on channel control descriptors for input ports */
1170         vpdma_add_sync_on_channel_ctd(&ctx->desc_list, VPE_CHAN_LUMA1_IN);
1171         vpdma_add_sync_on_channel_ctd(&ctx->desc_list, VPE_CHAN_CHROMA1_IN);
1172 
1173         if (ctx->deinterlacing) {
1174                 vpdma_add_sync_on_channel_ctd(&ctx->desc_list,
1175                         VPE_CHAN_LUMA2_IN);
1176                 vpdma_add_sync_on_channel_ctd(&ctx->desc_list,
1177                         VPE_CHAN_CHROMA2_IN);
1178 
1179                 vpdma_add_sync_on_channel_ctd(&ctx->desc_list,
1180                         VPE_CHAN_LUMA3_IN);
1181                 vpdma_add_sync_on_channel_ctd(&ctx->desc_list,
1182                         VPE_CHAN_CHROMA3_IN);
1183 
1184                 vpdma_add_sync_on_channel_ctd(&ctx->desc_list, VPE_CHAN_MV_IN);
1185         }
1186 
1187         /* sync on channel control descriptors for output ports */
1188         if (d_q_data->colorspace == V4L2_COLORSPACE_SRGB) {
1189                 vpdma_add_sync_on_channel_ctd(&ctx->desc_list,
1190                         VPE_CHAN_RGB_OUT);
1191         } else {
1192                 vpdma_add_sync_on_channel_ctd(&ctx->desc_list,
1193                         VPE_CHAN_LUMA_OUT);
1194                 if (d_q_data->fmt->coplanar)
1195                         vpdma_add_sync_on_channel_ctd(&ctx->desc_list,
1196                                 VPE_CHAN_CHROMA_OUT);
1197         }
1198 
1199         if (ctx->deinterlacing)
1200                 vpdma_add_sync_on_channel_ctd(&ctx->desc_list, VPE_CHAN_MV_OUT);
1201 
1202         enable_irqs(ctx);
1203 
1204         vpdma_map_desc_buf(ctx->dev->vpdma, &ctx->desc_list.buf);
1205         vpdma_submit_descs(ctx->dev->vpdma, &ctx->desc_list);
1206 }
1207 
1208 static void dei_error(struct vpe_ctx *ctx)
1209 {
1210         dev_warn(ctx->dev->v4l2_dev.dev,
1211                 "received DEI error interrupt\n");
1212 }
1213 
1214 static void ds1_uv_error(struct vpe_ctx *ctx)
1215 {
1216         dev_warn(ctx->dev->v4l2_dev.dev,
1217                 "received downsampler error interrupt\n");
1218 }
1219 
1220 static irqreturn_t vpe_irq(int irq_vpe, void *data)
1221 {
1222         struct vpe_dev *dev = (struct vpe_dev *)data;
1223         struct vpe_ctx *ctx;
1224         struct vpe_q_data *d_q_data;
1225         struct vb2_buffer *s_vb, *d_vb;
1226         struct v4l2_buffer *s_buf, *d_buf;
1227         unsigned long flags;
1228         u32 irqst0, irqst1;
1229 
1230         irqst0 = read_reg(dev, VPE_INT0_STATUS0);
1231         if (irqst0) {
1232                 write_reg(dev, VPE_INT0_STATUS0_CLR, irqst0);
1233                 vpe_dbg(dev, "INT0_STATUS0 = 0x%08x\n", irqst0);
1234         }
1235 
1236         irqst1 = read_reg(dev, VPE_INT0_STATUS1);
1237         if (irqst1) {
1238                 write_reg(dev, VPE_INT0_STATUS1_CLR, irqst1);
1239                 vpe_dbg(dev, "INT0_STATUS1 = 0x%08x\n", irqst1);
1240         }
1241 
1242         ctx = v4l2_m2m_get_curr_priv(dev->m2m_dev);
1243         if (!ctx) {
1244                 vpe_err(dev, "instance released before end of transaction\n");
1245                 goto handled;
1246         }
1247 
1248         if (irqst1) {
1249                 if (irqst1 & VPE_DEI_ERROR_INT) {
1250                         irqst1 &= ~VPE_DEI_ERROR_INT;
1251                         dei_error(ctx);
1252                 }
1253                 if (irqst1 & VPE_DS1_UV_ERROR_INT) {
1254                         irqst1 &= ~VPE_DS1_UV_ERROR_INT;
1255                         ds1_uv_error(ctx);
1256                 }
1257         }
1258 
1259         if (irqst0) {
1260                 if (irqst0 & VPE_INT0_LIST0_COMPLETE)
1261                         vpdma_clear_list_stat(ctx->dev->vpdma);
1262 
1263                 irqst0 &= ~(VPE_INT0_LIST0_COMPLETE);
1264         }
1265 
1266         if (irqst0 | irqst1) {
1267                 dev_warn(dev->v4l2_dev.dev, "Unexpected interrupt: "
1268                         "INT0_STATUS0 = 0x%08x, INT0_STATUS1 = 0x%08x\n",
1269                         irqst0, irqst1);
1270         }
1271 
1272         disable_irqs(ctx);
1273 
1274         vpdma_unmap_desc_buf(dev->vpdma, &ctx->desc_list.buf);
1275         vpdma_unmap_desc_buf(dev->vpdma, &ctx->mmr_adb);
1276         vpdma_unmap_desc_buf(dev->vpdma, &ctx->sc_coeff_h);
1277         vpdma_unmap_desc_buf(dev->vpdma, &ctx->sc_coeff_v);
1278 
1279         vpdma_reset_desc_list(&ctx->desc_list);
1280 
1281          /* the previous dst mv buffer becomes the next src mv buffer */
1282         ctx->src_mv_buf_selector = !ctx->src_mv_buf_selector;
1283 
1284         if (ctx->aborting)
1285                 goto finished;
1286 
1287         s_vb = ctx->src_vbs[0];
1288         d_vb = ctx->dst_vb;
1289         s_buf = &s_vb->v4l2_buf;
1290         d_buf = &d_vb->v4l2_buf;
1291 
1292         d_buf->flags = s_buf->flags;
1293 
1294         d_buf->timestamp = s_buf->timestamp;
1295         if (s_buf->flags & V4L2_BUF_FLAG_TIMECODE)
1296                 d_buf->timecode = s_buf->timecode;
1297 
1298         d_buf->sequence = ctx->sequence;
1299 
1300         d_q_data = &ctx->q_data[Q_DATA_DST];
1301         if (d_q_data->flags & Q_DATA_INTERLACED) {
1302                 d_buf->field = ctx->field;
1303                 if (ctx->field == V4L2_FIELD_BOTTOM) {
1304                         ctx->sequence++;
1305                         ctx->field = V4L2_FIELD_TOP;
1306                 } else {
1307                         WARN_ON(ctx->field != V4L2_FIELD_TOP);
1308                         ctx->field = V4L2_FIELD_BOTTOM;
1309                 }
1310         } else {
1311                 d_buf->field = V4L2_FIELD_NONE;
1312                 ctx->sequence++;
1313         }
1314 
1315         if (ctx->deinterlacing)
1316                 s_vb = ctx->src_vbs[2];
1317 
1318         spin_lock_irqsave(&dev->lock, flags);
1319         v4l2_m2m_buf_done(s_vb, VB2_BUF_STATE_DONE);
1320         v4l2_m2m_buf_done(d_vb, VB2_BUF_STATE_DONE);
1321         spin_unlock_irqrestore(&dev->lock, flags);
1322 
1323         if (ctx->deinterlacing) {
1324                 ctx->src_vbs[2] = ctx->src_vbs[1];
1325                 ctx->src_vbs[1] = ctx->src_vbs[0];
1326         }
1327 
1328         ctx->bufs_completed++;
1329         if (ctx->bufs_completed < ctx->bufs_per_job) {
1330                 device_run(ctx);
1331                 goto handled;
1332         }
1333 
1334 finished:
1335         vpe_dbg(ctx->dev, "finishing transaction\n");
1336         ctx->bufs_completed = 0;
1337         v4l2_m2m_job_finish(dev->m2m_dev, ctx->m2m_ctx);
1338 handled:
1339         return IRQ_HANDLED;
1340 }
1341 
1342 /*
1343  * video ioctls
1344  */
1345 static int vpe_querycap(struct file *file, void *priv,
1346                         struct v4l2_capability *cap)
1347 {
1348         strncpy(cap->driver, VPE_MODULE_NAME, sizeof(cap->driver) - 1);
1349         strncpy(cap->card, VPE_MODULE_NAME, sizeof(cap->card) - 1);
1350         snprintf(cap->bus_info, sizeof(cap->bus_info), "platform:%s",
1351                 VPE_MODULE_NAME);
1352         cap->device_caps  = V4L2_CAP_VIDEO_M2M_MPLANE | V4L2_CAP_STREAMING;
1353         cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS;
1354         return 0;
1355 }
1356 
1357 static int __enum_fmt(struct v4l2_fmtdesc *f, u32 type)
1358 {
1359         int i, index;
1360         struct vpe_fmt *fmt = NULL;
1361 
1362         index = 0;
1363         for (i = 0; i < ARRAY_SIZE(vpe_formats); ++i) {
1364                 if (vpe_formats[i].types & type) {
1365                         if (index == f->index) {
1366                                 fmt = &vpe_formats[i];
1367                                 break;
1368                         }
1369                         index++;
1370                 }
1371         }
1372 
1373         if (!fmt)
1374                 return -EINVAL;
1375 
1376         strncpy(f->description, fmt->name, sizeof(f->description) - 1);
1377         f->pixelformat = fmt->fourcc;
1378         return 0;
1379 }
1380 
1381 static int vpe_enum_fmt(struct file *file, void *priv,
1382                                 struct v4l2_fmtdesc *f)
1383 {
1384         if (V4L2_TYPE_IS_OUTPUT(f->type))
1385                 return __enum_fmt(f, VPE_FMT_TYPE_OUTPUT);
1386 
1387         return __enum_fmt(f, VPE_FMT_TYPE_CAPTURE);
1388 }
1389 
1390 static int vpe_g_fmt(struct file *file, void *priv, struct v4l2_format *f)
1391 {
1392         struct v4l2_pix_format_mplane *pix = &f->fmt.pix_mp;
1393         struct vpe_ctx *ctx = file2ctx(file);
1394         struct vb2_queue *vq;
1395         struct vpe_q_data *q_data;
1396         int i;
1397 
1398         vq = v4l2_m2m_get_vq(ctx->m2m_ctx, f->type);
1399         if (!vq)
1400                 return -EINVAL;
1401 
1402         q_data = get_q_data(ctx, f->type);
1403 
1404         pix->width = q_data->width;
1405         pix->height = q_data->height;
1406         pix->pixelformat = q_data->fmt->fourcc;
1407         pix->field = q_data->field;
1408 
1409         if (V4L2_TYPE_IS_OUTPUT(f->type)) {
1410                 pix->colorspace = q_data->colorspace;
1411         } else {
1412                 struct vpe_q_data *s_q_data;
1413 
1414                 /* get colorspace from the source queue */
1415                 s_q_data = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE);
1416 
1417                 pix->colorspace = s_q_data->colorspace;
1418         }
1419 
1420         pix->num_planes = q_data->fmt->coplanar ? 2 : 1;
1421 
1422         for (i = 0; i < pix->num_planes; i++) {
1423                 pix->plane_fmt[i].bytesperline = q_data->bytesperline[i];
1424                 pix->plane_fmt[i].sizeimage = q_data->sizeimage[i];
1425         }
1426 
1427         return 0;
1428 }
1429 
1430 static int __vpe_try_fmt(struct vpe_ctx *ctx, struct v4l2_format *f,
1431                        struct vpe_fmt *fmt, int type)
1432 {
1433         struct v4l2_pix_format_mplane *pix = &f->fmt.pix_mp;
1434         struct v4l2_plane_pix_format *plane_fmt;
1435         unsigned int w_align;
1436         int i, depth, depth_bytes;
1437 
1438         if (!fmt || !(fmt->types & type)) {
1439                 vpe_err(ctx->dev, "Fourcc format (0x%08x) invalid.\n",
1440                         pix->pixelformat);
1441                 return -EINVAL;
1442         }
1443 
1444         if (pix->field != V4L2_FIELD_NONE && pix->field != V4L2_FIELD_ALTERNATE)
1445                 pix->field = V4L2_FIELD_NONE;
1446 
1447         depth = fmt->vpdma_fmt[VPE_LUMA]->depth;
1448 
1449         /*
1450          * the line stride should 16 byte aligned for VPDMA to work, based on
1451          * the bytes per pixel, figure out how much the width should be aligned
1452          * to make sure line stride is 16 byte aligned
1453          */
1454         depth_bytes = depth >> 3;
1455 
1456         if (depth_bytes == 3)
1457                 /*
1458                  * if bpp is 3(as in some RGB formats), the pixel width doesn't
1459                  * really help in ensuring line stride is 16 byte aligned
1460                  */
1461                 w_align = 4;
1462         else
1463                 /*
1464                  * for the remainder bpp(4, 2 and 1), the pixel width alignment
1465                  * can ensure a line stride alignment of 16 bytes. For example,
1466                  * if bpp is 2, then the line stride can be 16 byte aligned if
1467                  * the width is 8 byte aligned
1468                  */
1469                 w_align = order_base_2(VPDMA_DESC_ALIGN / depth_bytes);
1470 
1471         v4l_bound_align_image(&pix->width, MIN_W, MAX_W, w_align,
1472                               &pix->height, MIN_H, MAX_H, H_ALIGN,
1473                               S_ALIGN);
1474 
1475         pix->num_planes = fmt->coplanar ? 2 : 1;
1476         pix->pixelformat = fmt->fourcc;
1477 
1478         if (!pix->colorspace) {
1479                 if (fmt->fourcc == V4L2_PIX_FMT_RGB24 ||
1480                                 fmt->fourcc == V4L2_PIX_FMT_BGR24 ||
1481                                 fmt->fourcc == V4L2_PIX_FMT_RGB32 ||
1482                                 fmt->fourcc == V4L2_PIX_FMT_BGR32) {
1483                         pix->colorspace = V4L2_COLORSPACE_SRGB;
1484                 } else {
1485                         if (pix->height > 1280) /* HD */
1486                                 pix->colorspace = V4L2_COLORSPACE_REC709;
1487                         else                    /* SD */
1488                                 pix->colorspace = V4L2_COLORSPACE_SMPTE170M;
1489                 }
1490         }
1491 
1492         memset(pix->reserved, 0, sizeof(pix->reserved));
1493         for (i = 0; i < pix->num_planes; i++) {
1494                 plane_fmt = &pix->plane_fmt[i];
1495                 depth = fmt->vpdma_fmt[i]->depth;
1496 
1497                 if (i == VPE_LUMA)
1498                         plane_fmt->bytesperline = (pix->width * depth) >> 3;
1499                 else
1500                         plane_fmt->bytesperline = pix->width;
1501 
1502                 plane_fmt->sizeimage =
1503                                 (pix->height * pix->width * depth) >> 3;
1504 
1505                 memset(plane_fmt->reserved, 0, sizeof(plane_fmt->reserved));
1506         }
1507 
1508         return 0;
1509 }
1510 
1511 static int vpe_try_fmt(struct file *file, void *priv, struct v4l2_format *f)
1512 {
1513         struct vpe_ctx *ctx = file2ctx(file);
1514         struct vpe_fmt *fmt = find_format(f);
1515 
1516         if (V4L2_TYPE_IS_OUTPUT(f->type))
1517                 return __vpe_try_fmt(ctx, f, fmt, VPE_FMT_TYPE_OUTPUT);
1518         else
1519                 return __vpe_try_fmt(ctx, f, fmt, VPE_FMT_TYPE_CAPTURE);
1520 }
1521 
1522 static int __vpe_s_fmt(struct vpe_ctx *ctx, struct v4l2_format *f)
1523 {
1524         struct v4l2_pix_format_mplane *pix = &f->fmt.pix_mp;
1525         struct v4l2_plane_pix_format *plane_fmt;
1526         struct vpe_q_data *q_data;
1527         struct vb2_queue *vq;
1528         int i;
1529 
1530         vq = v4l2_m2m_get_vq(ctx->m2m_ctx, f->type);
1531         if (!vq)
1532                 return -EINVAL;
1533 
1534         if (vb2_is_busy(vq)) {
1535                 vpe_err(ctx->dev, "queue busy\n");
1536                 return -EBUSY;
1537         }
1538 
1539         q_data = get_q_data(ctx, f->type);
1540         if (!q_data)
1541                 return -EINVAL;
1542 
1543         q_data->fmt             = find_format(f);
1544         q_data->width           = pix->width;
1545         q_data->height          = pix->height;
1546         q_data->colorspace      = pix->colorspace;
1547         q_data->field           = pix->field;
1548 
1549         for (i = 0; i < pix->num_planes; i++) {
1550                 plane_fmt = &pix->plane_fmt[i];
1551 
1552                 q_data->bytesperline[i] = plane_fmt->bytesperline;
1553                 q_data->sizeimage[i]    = plane_fmt->sizeimage;
1554         }
1555 
1556         q_data->c_rect.left     = 0;
1557         q_data->c_rect.top      = 0;
1558         q_data->c_rect.width    = q_data->width;
1559         q_data->c_rect.height   = q_data->height;
1560 
1561         if (q_data->field == V4L2_FIELD_ALTERNATE)
1562                 q_data->flags |= Q_DATA_INTERLACED;
1563         else
1564                 q_data->flags &= ~Q_DATA_INTERLACED;
1565 
1566         vpe_dbg(ctx->dev, "Setting format for type %d, wxh: %dx%d, fmt: %d bpl_y %d",
1567                 f->type, q_data->width, q_data->height, q_data->fmt->fourcc,
1568                 q_data->bytesperline[VPE_LUMA]);
1569         if (q_data->fmt->coplanar)
1570                 vpe_dbg(ctx->dev, " bpl_uv %d\n",
1571                         q_data->bytesperline[VPE_CHROMA]);
1572 
1573         return 0;
1574 }
1575 
1576 static int vpe_s_fmt(struct file *file, void *priv, struct v4l2_format *f)
1577 {
1578         int ret;
1579         struct vpe_ctx *ctx = file2ctx(file);
1580 
1581         ret = vpe_try_fmt(file, priv, f);
1582         if (ret)
1583                 return ret;
1584 
1585         ret = __vpe_s_fmt(ctx, f);
1586         if (ret)
1587                 return ret;
1588 
1589         if (V4L2_TYPE_IS_OUTPUT(f->type))
1590                 set_src_registers(ctx);
1591         else
1592                 set_dst_registers(ctx);
1593 
1594         return set_srcdst_params(ctx);
1595 }
1596 
1597 static int __vpe_try_selection(struct vpe_ctx *ctx, struct v4l2_selection *s)
1598 {
1599         struct vpe_q_data *q_data;
1600 
1601         if ((s->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) &&
1602             (s->type != V4L2_BUF_TYPE_VIDEO_OUTPUT))
1603                 return -EINVAL;
1604 
1605         q_data = get_q_data(ctx, s->type);
1606         if (!q_data)
1607                 return -EINVAL;
1608 
1609         switch (s->target) {
1610         case V4L2_SEL_TGT_COMPOSE:
1611                 /*
1612                  * COMPOSE target is only valid for capture buffer type, return
1613                  * error for output buffer type
1614                  */
1615                 if (s->type == V4L2_BUF_TYPE_VIDEO_OUTPUT)
1616                         return -EINVAL;
1617                 break;
1618         case V4L2_SEL_TGT_CROP:
1619                 /*
1620                  * CROP target is only valid for output buffer type, return
1621                  * error for capture buffer type
1622                  */
1623                 if (s->type == V4L2_BUF_TYPE_VIDEO_CAPTURE)
1624                         return -EINVAL;
1625                 break;
1626         /*
1627          * bound and default crop/compose targets are invalid targets to
1628          * try/set
1629          */
1630         default:
1631                 return -EINVAL;
1632         }
1633 
1634         if (s->r.top < 0 || s->r.left < 0) {
1635                 vpe_err(ctx->dev, "negative values for top and left\n");
1636                 s->r.top = s->r.left = 0;
1637         }
1638 
1639         v4l_bound_align_image(&s->r.width, MIN_W, q_data->width, 1,
1640                 &s->r.height, MIN_H, q_data->height, H_ALIGN, S_ALIGN);
1641 
1642         /* adjust left/top if cropping rectangle is out of bounds */
1643         if (s->r.left + s->r.width > q_data->width)
1644                 s->r.left = q_data->width - s->r.width;
1645         if (s->r.top + s->r.height > q_data->height)
1646                 s->r.top = q_data->height - s->r.height;
1647 
1648         return 0;
1649 }
1650 
1651 static int vpe_g_selection(struct file *file, void *fh,
1652                 struct v4l2_selection *s)
1653 {
1654         struct vpe_ctx *ctx = file2ctx(file);
1655         struct vpe_q_data *q_data;
1656         bool use_c_rect = false;
1657 
1658         if ((s->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) &&
1659             (s->type != V4L2_BUF_TYPE_VIDEO_OUTPUT))
1660                 return -EINVAL;
1661 
1662         q_data = get_q_data(ctx, s->type);
1663         if (!q_data)
1664                 return -EINVAL;
1665 
1666         switch (s->target) {
1667         case V4L2_SEL_TGT_COMPOSE_DEFAULT:
1668         case V4L2_SEL_TGT_COMPOSE_BOUNDS:
1669                 if (s->type == V4L2_BUF_TYPE_VIDEO_OUTPUT)
1670                         return -EINVAL;
1671                 break;
1672         case V4L2_SEL_TGT_CROP_BOUNDS:
1673         case V4L2_SEL_TGT_CROP_DEFAULT:
1674                 if (s->type == V4L2_BUF_TYPE_VIDEO_CAPTURE)
1675                         return -EINVAL;
1676                 break;
1677         case V4L2_SEL_TGT_COMPOSE:
1678                 if (s->type == V4L2_BUF_TYPE_VIDEO_OUTPUT)
1679                         return -EINVAL;
1680                 use_c_rect = true;
1681                 break;
1682         case V4L2_SEL_TGT_CROP:
1683                 if (s->type == V4L2_BUF_TYPE_VIDEO_CAPTURE)
1684                         return -EINVAL;
1685                 use_c_rect = true;
1686                 break;
1687         default:
1688                 return -EINVAL;
1689         }
1690 
1691         if (use_c_rect) {
1692                 /*
1693                  * for CROP/COMPOSE target type, return c_rect params from the
1694                  * respective buffer type
1695                  */
1696                 s->r = q_data->c_rect;
1697         } else {
1698                 /*
1699                  * for DEFAULT/BOUNDS target type, return width and height from
1700                  * S_FMT of the respective buffer type
1701                  */
1702                 s->r.left = 0;
1703                 s->r.top = 0;
1704                 s->r.width = q_data->width;
1705                 s->r.height = q_data->height;
1706         }
1707 
1708         return 0;
1709 }
1710 
1711 
1712 static int vpe_s_selection(struct file *file, void *fh,
1713                 struct v4l2_selection *s)
1714 {
1715         struct vpe_ctx *ctx = file2ctx(file);
1716         struct vpe_q_data *q_data;
1717         struct v4l2_selection sel = *s;
1718         int ret;
1719 
1720         ret = __vpe_try_selection(ctx, &sel);
1721         if (ret)
1722                 return ret;
1723 
1724         q_data = get_q_data(ctx, sel.type);
1725         if (!q_data)
1726                 return -EINVAL;
1727 
1728         if ((q_data->c_rect.left == sel.r.left) &&
1729                         (q_data->c_rect.top == sel.r.top) &&
1730                         (q_data->c_rect.width == sel.r.width) &&
1731                         (q_data->c_rect.height == sel.r.height)) {
1732                 vpe_dbg(ctx->dev,
1733                         "requested crop/compose values are already set\n");
1734                 return 0;
1735         }
1736 
1737         q_data->c_rect = sel.r;
1738 
1739         return set_srcdst_params(ctx);
1740 }
1741 
1742 static int vpe_reqbufs(struct file *file, void *priv,
1743                        struct v4l2_requestbuffers *reqbufs)
1744 {
1745         struct vpe_ctx *ctx = file2ctx(file);
1746 
1747         return v4l2_m2m_reqbufs(file, ctx->m2m_ctx, reqbufs);
1748 }
1749 
1750 static int vpe_querybuf(struct file *file, void *priv, struct v4l2_buffer *buf)
1751 {
1752         struct vpe_ctx *ctx = file2ctx(file);
1753 
1754         return v4l2_m2m_querybuf(file, ctx->m2m_ctx, buf);
1755 }
1756 
1757 static int vpe_qbuf(struct file *file, void *priv, struct v4l2_buffer *buf)
1758 {
1759         struct vpe_ctx *ctx = file2ctx(file);
1760 
1761         return v4l2_m2m_qbuf(file, ctx->m2m_ctx, buf);
1762 }
1763 
1764 static int vpe_dqbuf(struct file *file, void *priv, struct v4l2_buffer *buf)
1765 {
1766         struct vpe_ctx *ctx = file2ctx(file);
1767 
1768         return v4l2_m2m_dqbuf(file, ctx->m2m_ctx, buf);
1769 }
1770 
1771 static int vpe_streamon(struct file *file, void *priv, enum v4l2_buf_type type)
1772 {
1773         struct vpe_ctx *ctx = file2ctx(file);
1774 
1775         return v4l2_m2m_streamon(file, ctx->m2m_ctx, type);
1776 }
1777 
1778 static int vpe_streamoff(struct file *file, void *priv, enum v4l2_buf_type type)
1779 {
1780         struct vpe_ctx *ctx = file2ctx(file);
1781 
1782         vpe_dump_regs(ctx->dev);
1783         vpdma_dump_regs(ctx->dev->vpdma);
1784 
1785         return v4l2_m2m_streamoff(file, ctx->m2m_ctx, type);
1786 }
1787 
1788 /*
1789  * defines number of buffers/frames a context can process with VPE before
1790  * switching to a different context. default value is 1 buffer per context
1791  */
1792 #define V4L2_CID_VPE_BUFS_PER_JOB               (V4L2_CID_USER_TI_VPE_BASE + 0)
1793 
1794 static int vpe_s_ctrl(struct v4l2_ctrl *ctrl)
1795 {
1796         struct vpe_ctx *ctx =
1797                 container_of(ctrl->handler, struct vpe_ctx, hdl);
1798 
1799         switch (ctrl->id) {
1800         case V4L2_CID_VPE_BUFS_PER_JOB:
1801                 ctx->bufs_per_job = ctrl->val;
1802                 break;
1803 
1804         default:
1805                 vpe_err(ctx->dev, "Invalid control\n");
1806                 return -EINVAL;
1807         }
1808 
1809         return 0;
1810 }
1811 
1812 static const struct v4l2_ctrl_ops vpe_ctrl_ops = {
1813         .s_ctrl = vpe_s_ctrl,
1814 };
1815 
1816 static const struct v4l2_ioctl_ops vpe_ioctl_ops = {
1817         .vidioc_querycap        = vpe_querycap,
1818 
1819         .vidioc_enum_fmt_vid_cap_mplane = vpe_enum_fmt,
1820         .vidioc_g_fmt_vid_cap_mplane    = vpe_g_fmt,
1821         .vidioc_try_fmt_vid_cap_mplane  = vpe_try_fmt,
1822         .vidioc_s_fmt_vid_cap_mplane    = vpe_s_fmt,
1823 
1824         .vidioc_enum_fmt_vid_out_mplane = vpe_enum_fmt,
1825         .vidioc_g_fmt_vid_out_mplane    = vpe_g_fmt,
1826         .vidioc_try_fmt_vid_out_mplane  = vpe_try_fmt,
1827         .vidioc_s_fmt_vid_out_mplane    = vpe_s_fmt,
1828 
1829         .vidioc_g_selection             = vpe_g_selection,
1830         .vidioc_s_selection             = vpe_s_selection,
1831 
1832         .vidioc_reqbufs         = vpe_reqbufs,
1833         .vidioc_querybuf        = vpe_querybuf,
1834 
1835         .vidioc_qbuf            = vpe_qbuf,
1836         .vidioc_dqbuf           = vpe_dqbuf,
1837 
1838         .vidioc_streamon        = vpe_streamon,
1839         .vidioc_streamoff       = vpe_streamoff,
1840         .vidioc_subscribe_event = v4l2_ctrl_subscribe_event,
1841         .vidioc_unsubscribe_event = v4l2_event_unsubscribe,
1842 };
1843 
1844 /*
1845  * Queue operations
1846  */
1847 static int vpe_queue_setup(struct vb2_queue *vq,
1848                            const struct v4l2_format *fmt,
1849                            unsigned int *nbuffers, unsigned int *nplanes,
1850                            unsigned int sizes[], void *alloc_ctxs[])
1851 {
1852         int i;
1853         struct vpe_ctx *ctx = vb2_get_drv_priv(vq);
1854         struct vpe_q_data *q_data;
1855 
1856         q_data = get_q_data(ctx, vq->type);
1857 
1858         *nplanes = q_data->fmt->coplanar ? 2 : 1;
1859 
1860         for (i = 0; i < *nplanes; i++) {
1861                 sizes[i] = q_data->sizeimage[i];
1862                 alloc_ctxs[i] = ctx->dev->alloc_ctx;
1863         }
1864 
1865         vpe_dbg(ctx->dev, "get %d buffer(s) of size %d", *nbuffers,
1866                 sizes[VPE_LUMA]);
1867         if (q_data->fmt->coplanar)
1868                 vpe_dbg(ctx->dev, " and %d\n", sizes[VPE_CHROMA]);
1869 
1870         return 0;
1871 }
1872 
1873 static int vpe_buf_prepare(struct vb2_buffer *vb)
1874 {
1875         struct vpe_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue);
1876         struct vpe_q_data *q_data;
1877         int i, num_planes;
1878 
1879         vpe_dbg(ctx->dev, "type: %d\n", vb->vb2_queue->type);
1880 
1881         q_data = get_q_data(ctx, vb->vb2_queue->type);
1882         num_planes = q_data->fmt->coplanar ? 2 : 1;
1883 
1884         if (vb->vb2_queue->type == V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE) {
1885                 if (!(q_data->flags & Q_DATA_INTERLACED)) {
1886                         vb->v4l2_buf.field = V4L2_FIELD_NONE;
1887                 } else {
1888                         if (vb->v4l2_buf.field != V4L2_FIELD_TOP &&
1889                                         vb->v4l2_buf.field != V4L2_FIELD_BOTTOM)
1890                                 return -EINVAL;
1891                 }
1892         }
1893 
1894         for (i = 0; i < num_planes; i++) {
1895                 if (vb2_plane_size(vb, i) < q_data->sizeimage[i]) {
1896                         vpe_err(ctx->dev,
1897                                 "data will not fit into plane (%lu < %lu)\n",
1898                                 vb2_plane_size(vb, i),
1899                                 (long) q_data->sizeimage[i]);
1900                         return -EINVAL;
1901                 }
1902         }
1903 
1904         for (i = 0; i < num_planes; i++)
1905                 vb2_set_plane_payload(vb, i, q_data->sizeimage[i]);
1906 
1907         return 0;
1908 }
1909 
1910 static void vpe_buf_queue(struct vb2_buffer *vb)
1911 {
1912         struct vpe_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue);
1913         v4l2_m2m_buf_queue(ctx->m2m_ctx, vb);
1914 }
1915 
1916 static void vpe_wait_prepare(struct vb2_queue *q)
1917 {
1918         struct vpe_ctx *ctx = vb2_get_drv_priv(q);
1919         vpe_unlock(ctx);
1920 }
1921 
1922 static void vpe_wait_finish(struct vb2_queue *q)
1923 {
1924         struct vpe_ctx *ctx = vb2_get_drv_priv(q);
1925         vpe_lock(ctx);
1926 }
1927 
1928 static struct vb2_ops vpe_qops = {
1929         .queue_setup     = vpe_queue_setup,
1930         .buf_prepare     = vpe_buf_prepare,
1931         .buf_queue       = vpe_buf_queue,
1932         .wait_prepare    = vpe_wait_prepare,
1933         .wait_finish     = vpe_wait_finish,
1934 };
1935 
1936 static int queue_init(void *priv, struct vb2_queue *src_vq,
1937                       struct vb2_queue *dst_vq)
1938 {
1939         struct vpe_ctx *ctx = priv;
1940         int ret;
1941 
1942         memset(src_vq, 0, sizeof(*src_vq));
1943         src_vq->type = V4L2_BUF_TYPE_VIDEO_OUTPUT_MPLANE;
1944         src_vq->io_modes = VB2_MMAP | VB2_DMABUF;
1945         src_vq->drv_priv = ctx;
1946         src_vq->buf_struct_size = sizeof(struct v4l2_m2m_buffer);
1947         src_vq->ops = &vpe_qops;
1948         src_vq->mem_ops = &vb2_dma_contig_memops;
1949         src_vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY;
1950 
1951         ret = vb2_queue_init(src_vq);
1952         if (ret)
1953                 return ret;
1954 
1955         memset(dst_vq, 0, sizeof(*dst_vq));
1956         dst_vq->type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE;
1957         dst_vq->io_modes = VB2_MMAP | VB2_DMABUF;
1958         dst_vq->drv_priv = ctx;
1959         dst_vq->buf_struct_size = sizeof(struct v4l2_m2m_buffer);
1960         dst_vq->ops = &vpe_qops;
1961         dst_vq->mem_ops = &vb2_dma_contig_memops;
1962         dst_vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY;
1963 
1964         return vb2_queue_init(dst_vq);
1965 }
1966 
1967 static const struct v4l2_ctrl_config vpe_bufs_per_job = {
1968         .ops = &vpe_ctrl_ops,
1969         .id = V4L2_CID_VPE_BUFS_PER_JOB,
1970         .name = "Buffers Per Transaction",
1971         .type = V4L2_CTRL_TYPE_INTEGER,
1972         .def = VPE_DEF_BUFS_PER_JOB,
1973         .min = 1,
1974         .max = VIDEO_MAX_FRAME,
1975         .step = 1,
1976 };
1977 
1978 /*
1979  * File operations
1980  */
1981 static int vpe_open(struct file *file)
1982 {
1983         struct vpe_dev *dev = video_drvdata(file);
1984         struct vpe_ctx *ctx = NULL;
1985         struct vpe_q_data *s_q_data;
1986         struct v4l2_ctrl_handler *hdl;
1987         int ret;
1988 
1989         vpe_dbg(dev, "vpe_open\n");
1990 
1991         ctx = kzalloc(sizeof(*ctx), GFP_KERNEL);
1992         if (!ctx)
1993                 return -ENOMEM;
1994 
1995         ctx->dev = dev;
1996 
1997         if (mutex_lock_interruptible(&dev->dev_mutex)) {
1998                 ret = -ERESTARTSYS;
1999                 goto free_ctx;
2000         }
2001 
2002         ret = vpdma_create_desc_list(&ctx->desc_list, VPE_DESC_LIST_SIZE,
2003                         VPDMA_LIST_TYPE_NORMAL);
2004         if (ret != 0)
2005                 goto unlock;
2006 
2007         ret = vpdma_alloc_desc_buf(&ctx->mmr_adb, sizeof(struct vpe_mmr_adb));
2008         if (ret != 0)
2009                 goto free_desc_list;
2010 
2011         ret = vpdma_alloc_desc_buf(&ctx->sc_coeff_h, SC_COEF_SRAM_SIZE);
2012         if (ret != 0)
2013                 goto free_mmr_adb;
2014 
2015         ret = vpdma_alloc_desc_buf(&ctx->sc_coeff_v, SC_COEF_SRAM_SIZE);
2016         if (ret != 0)
2017                 goto free_sc_h;
2018 
2019         init_adb_hdrs(ctx);
2020 
2021         v4l2_fh_init(&ctx->fh, video_devdata(file));
2022         file->private_data = &ctx->fh;
2023 
2024         hdl = &ctx->hdl;
2025         v4l2_ctrl_handler_init(hdl, 1);
2026         v4l2_ctrl_new_custom(hdl, &vpe_bufs_per_job, NULL);
2027         if (hdl->error) {
2028                 ret = hdl->error;
2029                 goto exit_fh;
2030         }
2031         ctx->fh.ctrl_handler = hdl;
2032         v4l2_ctrl_handler_setup(hdl);
2033 
2034         s_q_data = &ctx->q_data[Q_DATA_SRC];
2035         s_q_data->fmt = &vpe_formats[2];
2036         s_q_data->width = 1920;
2037         s_q_data->height = 1080;
2038         s_q_data->bytesperline[VPE_LUMA] = (s_q_data->width *
2039                         s_q_data->fmt->vpdma_fmt[VPE_LUMA]->depth) >> 3;
2040         s_q_data->sizeimage[VPE_LUMA] = (s_q_data->bytesperline[VPE_LUMA] *
2041                         s_q_data->height);
2042         s_q_data->colorspace = V4L2_COLORSPACE_REC709;
2043         s_q_data->field = V4L2_FIELD_NONE;
2044         s_q_data->c_rect.left = 0;
2045         s_q_data->c_rect.top = 0;
2046         s_q_data->c_rect.width = s_q_data->width;
2047         s_q_data->c_rect.height = s_q_data->height;
2048         s_q_data->flags = 0;
2049 
2050         ctx->q_data[Q_DATA_DST] = *s_q_data;
2051 
2052         set_dei_shadow_registers(ctx);
2053         set_src_registers(ctx);
2054         set_dst_registers(ctx);
2055         ret = set_srcdst_params(ctx);
2056         if (ret)
2057                 goto exit_fh;
2058 
2059         ctx->m2m_ctx = v4l2_m2m_ctx_init(dev->m2m_dev, ctx, &queue_init);
2060 
2061         if (IS_ERR(ctx->m2m_ctx)) {
2062                 ret = PTR_ERR(ctx->m2m_ctx);
2063                 goto exit_fh;
2064         }
2065 
2066         v4l2_fh_add(&ctx->fh);
2067 
2068         /*
2069          * for now, just report the creation of the first instance, we can later
2070          * optimize the driver to enable or disable clocks when the first
2071          * instance is created or the last instance released
2072          */
2073         if (atomic_inc_return(&dev->num_instances) == 1)
2074                 vpe_dbg(dev, "first instance created\n");
2075 
2076         ctx->bufs_per_job = VPE_DEF_BUFS_PER_JOB;
2077 
2078         ctx->load_mmrs = true;
2079 
2080         vpe_dbg(dev, "created instance %p, m2m_ctx: %p\n",
2081                 ctx, ctx->m2m_ctx);
2082 
2083         mutex_unlock(&dev->dev_mutex);
2084 
2085         return 0;
2086 exit_fh:
2087         v4l2_ctrl_handler_free(hdl);
2088         v4l2_fh_exit(&ctx->fh);
2089         vpdma_free_desc_buf(&ctx->sc_coeff_v);
2090 free_sc_h:
2091         vpdma_free_desc_buf(&ctx->sc_coeff_h);
2092 free_mmr_adb:
2093         vpdma_free_desc_buf(&ctx->mmr_adb);
2094 free_desc_list:
2095         vpdma_free_desc_list(&ctx->desc_list);
2096 unlock:
2097         mutex_unlock(&dev->dev_mutex);
2098 free_ctx:
2099         kfree(ctx);
2100         return ret;
2101 }
2102 
2103 static int vpe_release(struct file *file)
2104 {
2105         struct vpe_dev *dev = video_drvdata(file);
2106         struct vpe_ctx *ctx = file2ctx(file);
2107 
2108         vpe_dbg(dev, "releasing instance %p\n", ctx);
2109 
2110         mutex_lock(&dev->dev_mutex);
2111         free_vbs(ctx);
2112         free_mv_buffers(ctx);
2113         vpdma_free_desc_list(&ctx->desc_list);
2114         vpdma_free_desc_buf(&ctx->mmr_adb);
2115 
2116         v4l2_fh_del(&ctx->fh);
2117         v4l2_fh_exit(&ctx->fh);
2118         v4l2_ctrl_handler_free(&ctx->hdl);
2119         v4l2_m2m_ctx_release(ctx->m2m_ctx);
2120 
2121         kfree(ctx);
2122 
2123         /*
2124          * for now, just report the release of the last instance, we can later
2125          * optimize the driver to enable or disable clocks when the first
2126          * instance is created or the last instance released
2127          */
2128         if (atomic_dec_return(&dev->num_instances) == 0)
2129                 vpe_dbg(dev, "last instance released\n");
2130 
2131         mutex_unlock(&dev->dev_mutex);
2132 
2133         return 0;
2134 }
2135 
2136 static unsigned int vpe_poll(struct file *file,
2137                              struct poll_table_struct *wait)
2138 {
2139         struct vpe_ctx *ctx = file2ctx(file);
2140         struct vpe_dev *dev = ctx->dev;
2141         int ret;
2142 
2143         mutex_lock(&dev->dev_mutex);
2144         ret = v4l2_m2m_poll(file, ctx->m2m_ctx, wait);
2145         mutex_unlock(&dev->dev_mutex);
2146         return ret;
2147 }
2148 
2149 static int vpe_mmap(struct file *file, struct vm_area_struct *vma)
2150 {
2151         struct vpe_ctx *ctx = file2ctx(file);
2152         struct vpe_dev *dev = ctx->dev;
2153         int ret;
2154 
2155         if (mutex_lock_interruptible(&dev->dev_mutex))
2156                 return -ERESTARTSYS;
2157         ret = v4l2_m2m_mmap(file, ctx->m2m_ctx, vma);
2158         mutex_unlock(&dev->dev_mutex);
2159         return ret;
2160 }
2161 
2162 static const struct v4l2_file_operations vpe_fops = {
2163         .owner          = THIS_MODULE,
2164         .open           = vpe_open,
2165         .release        = vpe_release,
2166         .poll           = vpe_poll,
2167         .unlocked_ioctl = video_ioctl2,
2168         .mmap           = vpe_mmap,
2169 };
2170 
2171 static struct video_device vpe_videodev = {
2172         .name           = VPE_MODULE_NAME,
2173         .fops           = &vpe_fops,
2174         .ioctl_ops      = &vpe_ioctl_ops,
2175         .minor          = -1,
2176         .release        = video_device_release_empty,
2177         .vfl_dir        = VFL_DIR_M2M,
2178 };
2179 
2180 static struct v4l2_m2m_ops m2m_ops = {
2181         .device_run     = device_run,
2182         .job_ready      = job_ready,
2183         .job_abort      = job_abort,
2184         .lock           = vpe_lock,
2185         .unlock         = vpe_unlock,
2186 };
2187 
2188 static int vpe_runtime_get(struct platform_device *pdev)
2189 {
2190         int r;
2191 
2192         dev_dbg(&pdev->dev, "vpe_runtime_get\n");
2193 
2194         r = pm_runtime_get_sync(&pdev->dev);
2195         WARN_ON(r < 0);
2196         return r < 0 ? r : 0;
2197 }
2198 
2199 static void vpe_runtime_put(struct platform_device *pdev)
2200 {
2201 
2202         int r;
2203 
2204         dev_dbg(&pdev->dev, "vpe_runtime_put\n");
2205 
2206         r = pm_runtime_put_sync(&pdev->dev);
2207         WARN_ON(r < 0 && r != -ENOSYS);
2208 }
2209 
2210 static void vpe_fw_cb(struct platform_device *pdev)
2211 {
2212         struct vpe_dev *dev = platform_get_drvdata(pdev);
2213         struct video_device *vfd;
2214         int ret;
2215 
2216         vfd = &dev->vfd;
2217         *vfd = vpe_videodev;
2218         vfd->lock = &dev->dev_mutex;
2219         vfd->v4l2_dev = &dev->v4l2_dev;
2220 
2221         ret = video_register_device(vfd, VFL_TYPE_GRABBER, 0);
2222         if (ret) {
2223                 vpe_err(dev, "Failed to register video device\n");
2224 
2225                 vpe_set_clock_enable(dev, 0);
2226                 vpe_runtime_put(pdev);
2227                 pm_runtime_disable(&pdev->dev);
2228                 v4l2_m2m_release(dev->m2m_dev);
2229                 vb2_dma_contig_cleanup_ctx(dev->alloc_ctx);
2230                 v4l2_device_unregister(&dev->v4l2_dev);
2231 
2232                 return;
2233         }
2234 
2235         video_set_drvdata(vfd, dev);
2236         snprintf(vfd->name, sizeof(vfd->name), "%s", vpe_videodev.name);
2237         dev_info(dev->v4l2_dev.dev, "Device registered as /dev/video%d\n",
2238                 vfd->num);
2239 }
2240 
2241 static int vpe_probe(struct platform_device *pdev)
2242 {
2243         struct vpe_dev *dev;
2244         int ret, irq, func;
2245 
2246         dev = devm_kzalloc(&pdev->dev, sizeof(*dev), GFP_KERNEL);
2247         if (!dev)
2248                 return -ENOMEM;
2249 
2250         spin_lock_init(&dev->lock);
2251 
2252         ret = v4l2_device_register(&pdev->dev, &dev->v4l2_dev);
2253         if (ret)
2254                 return ret;
2255 
2256         atomic_set(&dev->num_instances, 0);
2257         mutex_init(&dev->dev_mutex);
2258 
2259         dev->res = platform_get_resource_byname(pdev, IORESOURCE_MEM,
2260                         "vpe_top");
2261         /*
2262          * HACK: we get resource info from device tree in the form of a list of
2263          * VPE sub blocks, the driver currently uses only the base of vpe_top
2264          * for register access, the driver should be changed later to access
2265          * registers based on the sub block base addresses
2266          */
2267         dev->base = devm_ioremap(&pdev->dev, dev->res->start, SZ_32K);
2268         if (!dev->base) {
2269                 ret = -ENOMEM;
2270                 goto v4l2_dev_unreg;
2271         }
2272 
2273         irq = platform_get_irq(pdev, 0);
2274         ret = devm_request_irq(&pdev->dev, irq, vpe_irq, 0, VPE_MODULE_NAME,
2275                         dev);
2276         if (ret)
2277                 goto v4l2_dev_unreg;
2278 
2279         platform_set_drvdata(pdev, dev);
2280 
2281         dev->alloc_ctx = vb2_dma_contig_init_ctx(&pdev->dev);
2282         if (IS_ERR(dev->alloc_ctx)) {
2283                 vpe_err(dev, "Failed to alloc vb2 context\n");
2284                 ret = PTR_ERR(dev->alloc_ctx);
2285                 goto v4l2_dev_unreg;
2286         }
2287 
2288         dev->m2m_dev = v4l2_m2m_init(&m2m_ops);
2289         if (IS_ERR(dev->m2m_dev)) {
2290                 vpe_err(dev, "Failed to init mem2mem device\n");
2291                 ret = PTR_ERR(dev->m2m_dev);
2292                 goto rel_ctx;
2293         }
2294 
2295         pm_runtime_enable(&pdev->dev);
2296 
2297         ret = vpe_runtime_get(pdev);
2298         if (ret)
2299                 goto rel_m2m;
2300 
2301         /* Perform clk enable followed by reset */
2302         vpe_set_clock_enable(dev, 1);
2303 
2304         vpe_top_reset(dev);
2305 
2306         func = read_field_reg(dev, VPE_PID, VPE_PID_FUNC_MASK,
2307                 VPE_PID_FUNC_SHIFT);
2308         vpe_dbg(dev, "VPE PID function %x\n", func);
2309 
2310         vpe_top_vpdma_reset(dev);
2311 
2312         dev->sc = sc_create(pdev);
2313         if (IS_ERR(dev->sc)) {
2314                 ret = PTR_ERR(dev->sc);
2315                 goto runtime_put;
2316         }
2317 
2318         dev->csc = csc_create(pdev);
2319         if (IS_ERR(dev->csc)) {
2320                 ret = PTR_ERR(dev->csc);
2321                 goto runtime_put;
2322         }
2323 
2324         dev->vpdma = vpdma_create(pdev, vpe_fw_cb);
2325         if (IS_ERR(dev->vpdma)) {
2326                 ret = PTR_ERR(dev->vpdma);
2327                 goto runtime_put;
2328         }
2329 
2330         return 0;
2331 
2332 runtime_put:
2333         vpe_runtime_put(pdev);
2334 rel_m2m:
2335         pm_runtime_disable(&pdev->dev);
2336         v4l2_m2m_release(dev->m2m_dev);
2337 rel_ctx:
2338         vb2_dma_contig_cleanup_ctx(dev->alloc_ctx);
2339 v4l2_dev_unreg:
2340         v4l2_device_unregister(&dev->v4l2_dev);
2341 
2342         return ret;
2343 }
2344 
2345 static int vpe_remove(struct platform_device *pdev)
2346 {
2347         struct vpe_dev *dev = platform_get_drvdata(pdev);
2348 
2349         v4l2_info(&dev->v4l2_dev, "Removing " VPE_MODULE_NAME);
2350 
2351         v4l2_m2m_release(dev->m2m_dev);
2352         video_unregister_device(&dev->vfd);
2353         v4l2_device_unregister(&dev->v4l2_dev);
2354         vb2_dma_contig_cleanup_ctx(dev->alloc_ctx);
2355 
2356         vpe_set_clock_enable(dev, 0);
2357         vpe_runtime_put(pdev);
2358         pm_runtime_disable(&pdev->dev);
2359 
2360         return 0;
2361 }
2362 
2363 #if defined(CONFIG_OF)
2364 static const struct of_device_id vpe_of_match[] = {
2365         {
2366                 .compatible = "ti,vpe",
2367         },
2368         {},
2369 };
2370 #else
2371 #define vpe_of_match NULL
2372 #endif
2373 
2374 static struct platform_driver vpe_pdrv = {
2375         .probe          = vpe_probe,
2376         .remove         = vpe_remove,
2377         .driver         = {
2378                 .name   = VPE_MODULE_NAME,
2379                 .owner  = THIS_MODULE,
2380                 .of_match_table = vpe_of_match,
2381         },
2382 };
2383 
2384 module_platform_driver(vpe_pdrv);
2385 
2386 MODULE_DESCRIPTION("TI VPE driver");
2387 MODULE_AUTHOR("Dale Farnsworth, <dale@farnsworth.org>");
2388 MODULE_LICENSE("GPL");
2389 

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