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Merge tag 'trace-printf-v6.13' of git://git.kernel.org/pub/scm/linux/kernel/git/trace...
[drm/drm-misc.git] / drivers / media / platform / verisilicon / hantro_g1_vp8_dec.c
blob851eb67f19f50b89c4b8447158470ff31582ff61
1 // SPDX-License-Identifier: GPL-2.0
2 /*
3 * Hantro VP8 codec driver
4 *
5 * Copyright (C) 2019 Rockchip Electronics Co., Ltd.
6 * ZhiChao Yu <zhichao.yu@rock-chips.com>
7 *
8 * Copyright (C) 2019 Google, Inc.
9 * Tomasz Figa <tfiga@chromium.org>
10 */
11
12 #include <media/v4l2-mem2mem.h>
13
14 #include "hantro_hw.h"
15 #include "hantro.h"
16 #include "hantro_g1_regs.h"
17
18 /* DCT partition base address regs */
19 static const struct hantro_reg vp8_dec_dct_base[8] = {
20 { G1_REG_ADDR_STR, 0, 0xffffffff },
21 { G1_REG_ADDR_REF(8), 0, 0xffffffff },
22 { G1_REG_ADDR_REF(9), 0, 0xffffffff },
23 { G1_REG_ADDR_REF(10), 0, 0xffffffff },
24 { G1_REG_ADDR_REF(11), 0, 0xffffffff },
25 { G1_REG_ADDR_REF(12), 0, 0xffffffff },
26 { G1_REG_ADDR_REF(14), 0, 0xffffffff },
27 { G1_REG_ADDR_REF(15), 0, 0xffffffff },
28 };
29
30 /* Loop filter level regs */
31 static const struct hantro_reg vp8_dec_lf_level[4] = {
32 { G1_REG_REF_PIC(2), 18, 0x3f },
33 { G1_REG_REF_PIC(2), 12, 0x3f },
34 { G1_REG_REF_PIC(2), 6, 0x3f },
35 { G1_REG_REF_PIC(2), 0, 0x3f },
36 };
37
38 /* Macroblock loop filter level adjustment regs */
39 static const struct hantro_reg vp8_dec_mb_adj[4] = {
40 { G1_REG_REF_PIC(0), 21, 0x7f },
41 { G1_REG_REF_PIC(0), 14, 0x7f },
42 { G1_REG_REF_PIC(0), 7, 0x7f },
43 { G1_REG_REF_PIC(0), 0, 0x7f },
44 };
45
46 /* Reference frame adjustment regs */
47 static const struct hantro_reg vp8_dec_ref_adj[4] = {
48 { G1_REG_REF_PIC(1), 21, 0x7f },
49 { G1_REG_REF_PIC(1), 14, 0x7f },
50 { G1_REG_REF_PIC(1), 7, 0x7f },
51 { G1_REG_REF_PIC(1), 0, 0x7f },
52 };
53
54 /* Quantizer */
55 static const struct hantro_reg vp8_dec_quant[4] = {
56 { G1_REG_REF_PIC(3), 11, 0x7ff },
57 { G1_REG_REF_PIC(3), 0, 0x7ff },
58 { G1_REG_BD_REF_PIC(4), 11, 0x7ff },
59 { G1_REG_BD_REF_PIC(4), 0, 0x7ff },
60 };
61
62 /* Quantizer delta regs */
63 static const struct hantro_reg vp8_dec_quant_delta[5] = {
64 { G1_REG_REF_PIC(3), 27, 0x1f },
65 { G1_REG_REF_PIC(3), 22, 0x1f },
66 { G1_REG_BD_REF_PIC(4), 27, 0x1f },
67 { G1_REG_BD_REF_PIC(4), 22, 0x1f },
68 { G1_REG_BD_P_REF_PIC, 27, 0x1f },
69 };
70
71 /* DCT partition start bits regs */
72 static const struct hantro_reg vp8_dec_dct_start_bits[8] = {
73 { G1_REG_DEC_CTRL2, 26, 0x3f }, { G1_REG_DEC_CTRL4, 26, 0x3f },
74 { G1_REG_DEC_CTRL4, 20, 0x3f }, { G1_REG_DEC_CTRL7, 24, 0x3f },
75 { G1_REG_DEC_CTRL7, 18, 0x3f }, { G1_REG_DEC_CTRL7, 12, 0x3f },
76 { G1_REG_DEC_CTRL7, 6, 0x3f }, { G1_REG_DEC_CTRL7, 0, 0x3f },
77 };
78
79 /* Precision filter tap regs */
80 static const struct hantro_reg vp8_dec_pred_bc_tap[8][4] = {
81 {
82 { G1_REG_PRED_FLT, 22, 0x3ff },
83 { G1_REG_PRED_FLT, 12, 0x3ff },
84 { G1_REG_PRED_FLT, 2, 0x3ff },
85 { G1_REG_REF_PIC(4), 22, 0x3ff },
86 },
87 {
88 { G1_REG_REF_PIC(4), 12, 0x3ff },
89 { G1_REG_REF_PIC(4), 2, 0x3ff },
90 { G1_REG_REF_PIC(5), 22, 0x3ff },
91 { G1_REG_REF_PIC(5), 12, 0x3ff },
92 },
93 {
94 { G1_REG_REF_PIC(5), 2, 0x3ff },
95 { G1_REG_REF_PIC(6), 22, 0x3ff },
96 { G1_REG_REF_PIC(6), 12, 0x3ff },
97 { G1_REG_REF_PIC(6), 2, 0x3ff },
98 },
99 {
100 { G1_REG_REF_PIC(7), 22, 0x3ff },
101 { G1_REG_REF_PIC(7), 12, 0x3ff },
102 { G1_REG_REF_PIC(7), 2, 0x3ff },
103 { G1_REG_LT_REF, 22, 0x3ff },
104 },
105 {
106 { G1_REG_LT_REF, 12, 0x3ff },
107 { G1_REG_LT_REF, 2, 0x3ff },
108 { G1_REG_VALID_REF, 22, 0x3ff },
109 { G1_REG_VALID_REF, 12, 0x3ff },
110 },
111 {
112 { G1_REG_VALID_REF, 2, 0x3ff },
113 { G1_REG_BD_REF_PIC(0), 22, 0x3ff },
114 { G1_REG_BD_REF_PIC(0), 12, 0x3ff },
115 { G1_REG_BD_REF_PIC(0), 2, 0x3ff },
116 },
117 {
118 { G1_REG_BD_REF_PIC(1), 22, 0x3ff },
119 { G1_REG_BD_REF_PIC(1), 12, 0x3ff },
120 { G1_REG_BD_REF_PIC(1), 2, 0x3ff },
121 { G1_REG_BD_REF_PIC(2), 22, 0x3ff },
122 },
123 {
124 { G1_REG_BD_REF_PIC(2), 12, 0x3ff },
125 { G1_REG_BD_REF_PIC(2), 2, 0x3ff },
126 { G1_REG_BD_REF_PIC(3), 22, 0x3ff },
127 { G1_REG_BD_REF_PIC(3), 12, 0x3ff },
128 },
129 };
130
131 /*
132 * Set loop filters
133 */
134 static void cfg_lf(struct hantro_ctx *ctx,
135 const struct v4l2_ctrl_vp8_frame *hdr)
136 {
137 const struct v4l2_vp8_segment *seg = &hdr->segment;
138 const struct v4l2_vp8_loop_filter *lf = &hdr->lf;
139 struct hantro_dev *vpu = ctx->dev;
140 unsigned int i;
141 u32 reg;
142
143 if (!(seg->flags & V4L2_VP8_SEGMENT_FLAG_ENABLED)) {
144 hantro_reg_write(vpu, &vp8_dec_lf_level[0], lf->level);
145 } else if (seg->flags & V4L2_VP8_SEGMENT_FLAG_DELTA_VALUE_MODE) {
146 for (i = 0; i < 4; i++) {
147 u32 lf_level = clamp(lf->level + seg->lf_update[i],
148 0, 63);
149
150 hantro_reg_write(vpu, &vp8_dec_lf_level[i], lf_level);
151 }
152 } else {
153 for (i = 0; i < 4; i++)
154 hantro_reg_write(vpu, &vp8_dec_lf_level[i],
155 seg->lf_update[i]);
156 }
157
158 reg = G1_REG_REF_PIC_FILT_SHARPNESS(lf->sharpness_level);
159 if (lf->flags & V4L2_VP8_LF_FILTER_TYPE_SIMPLE)
160 reg |= G1_REG_REF_PIC_FILT_TYPE_E;
161 vdpu_write_relaxed(vpu, reg, G1_REG_REF_PIC(0));
162
163 if (lf->flags & V4L2_VP8_LF_ADJ_ENABLE) {
164 for (i = 0; i < 4; i++) {
165 hantro_reg_write(vpu, &vp8_dec_mb_adj[i],
166 lf->mb_mode_delta[i]);
167 hantro_reg_write(vpu, &vp8_dec_ref_adj[i],
168 lf->ref_frm_delta[i]);
169 }
170 }
171 }
172
173 /*
174 * Set quantization parameters
175 */
176 static void cfg_qp(struct hantro_ctx *ctx,
177 const struct v4l2_ctrl_vp8_frame *hdr)
178 {
179 const struct v4l2_vp8_quantization *q = &hdr->quant;
180 const struct v4l2_vp8_segment *seg = &hdr->segment;
181 struct hantro_dev *vpu = ctx->dev;
182 unsigned int i;
183
184 if (!(seg->flags & V4L2_VP8_SEGMENT_FLAG_ENABLED)) {
185 hantro_reg_write(vpu, &vp8_dec_quant[0], q->y_ac_qi);
186 } else if (seg->flags & V4L2_VP8_SEGMENT_FLAG_DELTA_VALUE_MODE) {
187 for (i = 0; i < 4; i++) {
188 u32 quant = clamp(q->y_ac_qi + seg->quant_update[i],
189 0, 127);
190
191 hantro_reg_write(vpu, &vp8_dec_quant[i], quant);
192 }
193 } else {
194 for (i = 0; i < 4; i++)
195 hantro_reg_write(vpu, &vp8_dec_quant[i],
196 seg->quant_update[i]);
197 }
198
199 hantro_reg_write(vpu, &vp8_dec_quant_delta[0], q->y_dc_delta);
200 hantro_reg_write(vpu, &vp8_dec_quant_delta[1], q->y2_dc_delta);
201 hantro_reg_write(vpu, &vp8_dec_quant_delta[2], q->y2_ac_delta);
202 hantro_reg_write(vpu, &vp8_dec_quant_delta[3], q->uv_dc_delta);
203 hantro_reg_write(vpu, &vp8_dec_quant_delta[4], q->uv_ac_delta);
204 }
205
206 /*
207 * set control partition and DCT partition regs
208 *
209 * VP8 frame stream data layout:
210 *
211 * first_part_size parttion_sizes[0]
212 * ^ ^
213 * src_dma | |
214 * ^ +--------+------+ +-----+-----+
215 * | | control part | | |
216 * +--------+----------------+------------------+-----------+-----+-----------+
217 * | tag 3B | extra 7B | hdr | mb_data | DCT sz | DCT part0 | ... | DCT partn |
218 * +--------+-----------------------------------+-----------+-----+-----------+
219 * | | | |
220 * v +----+---+ v
221 * mb_start | src_dma_end
222 * v
223 * DCT size part
224 * (num_dct-1)*3B
225 * Note:
226 * 1. only key-frames have extra 7-bytes
227 * 2. all offsets are base on src_dma
228 * 3. number of DCT parts is 1, 2, 4 or 8
229 * 4. the addresses set to the VPU must be 64-bits aligned
230 */
231 static void cfg_parts(struct hantro_ctx *ctx,
232 const struct v4l2_ctrl_vp8_frame *hdr)
233 {
234 struct hantro_dev *vpu = ctx->dev;
235 struct vb2_v4l2_buffer *vb2_src;
236 u32 first_part_offset = V4L2_VP8_FRAME_IS_KEY_FRAME(hdr) ? 10 : 3;
237 u32 mb_size, mb_offset_bytes, mb_offset_bits, mb_start_bits;
238 u32 dct_size_part_size, dct_part_offset;
239 struct hantro_reg reg;
240 dma_addr_t src_dma;
241 u32 dct_part_total_len = 0;
242 u32 count = 0;
243 unsigned int i;
244
245 vb2_src = hantro_get_src_buf(ctx);
246 src_dma = vb2_dma_contig_plane_dma_addr(&vb2_src->vb2_buf, 0);
247
248 /*
249 * Calculate control partition mb data info
250 * @first_part_header_bits: bits offset of mb data from first
251 * part start pos
252 * @mb_offset_bits: bits offset of mb data from src_dma
253 * base addr
254 * @mb_offset_byte: bytes offset of mb data from src_dma
255 * base addr
256 * @mb_start_bits: bits offset of mb data from mb data
257 * 64bits alignment addr
258 */
259 mb_offset_bits = first_part_offset * 8 +
260 hdr->first_part_header_bits + 8;
261 mb_offset_bytes = mb_offset_bits / 8;
262 mb_start_bits = mb_offset_bits -
263 (mb_offset_bytes & (~DEC_8190_ALIGN_MASK)) * 8;
264 mb_size = hdr->first_part_size -
265 (mb_offset_bytes - first_part_offset) +
266 (mb_offset_bytes & DEC_8190_ALIGN_MASK);
267
268 /* Macroblock data aligned base addr */
269 vdpu_write_relaxed(vpu, (mb_offset_bytes & (~DEC_8190_ALIGN_MASK))
270 + src_dma, G1_REG_ADDR_REF(13));
271
272 /* Macroblock data start bits */
273 reg.base = G1_REG_DEC_CTRL2;
274 reg.mask = 0x3f;
275 reg.shift = 18;
276 hantro_reg_write(vpu, &reg, mb_start_bits);
277
278 /* Macroblock aligned data length */
279 reg.base = G1_REG_DEC_CTRL6;
280 reg.mask = 0x3fffff;
281 reg.shift = 0;
282 hantro_reg_write(vpu, &reg, mb_size + 1);
283
284 /*
285 * Calculate DCT partition info
286 * @dct_size_part_size: Containing sizes of DCT part, every DCT part
287 * has 3 bytes to store its size, except the last
288 * DCT part
289 * @dct_part_offset: bytes offset of DCT parts from src_dma base addr
290 * @dct_part_total_len: total size of all DCT parts
291 */
292 dct_size_part_size = (hdr->num_dct_parts - 1) * 3;
293 dct_part_offset = first_part_offset + hdr->first_part_size;
294 for (i = 0; i < hdr->num_dct_parts; i++)
295 dct_part_total_len += hdr->dct_part_sizes[i];
296 dct_part_total_len += dct_size_part_size;
297 dct_part_total_len += (dct_part_offset & DEC_8190_ALIGN_MASK);
298
299 /* Number of DCT partitions */
300 reg.base = G1_REG_DEC_CTRL6;
301 reg.mask = 0xf;
302 reg.shift = 24;
303 hantro_reg_write(vpu, &reg, hdr->num_dct_parts - 1);
304
305 /* DCT partition length */
306 vdpu_write_relaxed(vpu,
307 G1_REG_DEC_CTRL3_STREAM_LEN(dct_part_total_len),
308 G1_REG_DEC_CTRL3);
309
310 /* DCT partitions base address */
311 for (i = 0; i < hdr->num_dct_parts; i++) {
312 u32 byte_offset = dct_part_offset + dct_size_part_size + count;
313 u32 base_addr = byte_offset + src_dma;
314
315 hantro_reg_write(vpu, &vp8_dec_dct_base[i],
316 base_addr & (~DEC_8190_ALIGN_MASK));
317
318 hantro_reg_write(vpu, &vp8_dec_dct_start_bits[i],
319 (byte_offset & DEC_8190_ALIGN_MASK) * 8);
320
321 count += hdr->dct_part_sizes[i];
322 }
323 }
324
325 /*
326 * prediction filter taps
327 * normal 6-tap filters
328 */
329 static void cfg_tap(struct hantro_ctx *ctx,
330 const struct v4l2_ctrl_vp8_frame *hdr)
331 {
332 struct hantro_dev *vpu = ctx->dev;
333 struct hantro_reg reg;
334 u32 val = 0;
335 int i, j;
336
337 reg.base = G1_REG_BD_REF_PIC(3);
338 reg.mask = 0xf;
339
340 if ((hdr->version & 0x03) != 0)
341 return; /* Tap filter not used. */
342
343 for (i = 0; i < 8; i++) {
344 val = (hantro_vp8_dec_mc_filter[i][0] << 2) |
345 hantro_vp8_dec_mc_filter[i][5];
346
347 for (j = 0; j < 4; j++)
348 hantro_reg_write(vpu, &vp8_dec_pred_bc_tap[i][j],
349 hantro_vp8_dec_mc_filter[i][j + 1]);
350
351 switch (i) {
352 case 2:
353 reg.shift = 8;
354 break;
355 case 4:
356 reg.shift = 4;
357 break;
358 case 6:
359 reg.shift = 0;
360 break;
361 default:
362 continue;
363 }
364
365 hantro_reg_write(vpu, &reg, val);
366 }
367 }
368
369 static void cfg_ref(struct hantro_ctx *ctx,
370 const struct v4l2_ctrl_vp8_frame *hdr,
371 struct vb2_v4l2_buffer *vb2_dst)
372 {
373 struct hantro_dev *vpu = ctx->dev;
374 dma_addr_t ref;
375
376
377 ref = hantro_get_ref(ctx, hdr->last_frame_ts);
378 if (!ref) {
379 vpu_debug(0, "failed to find last frame ts=%llu\n",
380 hdr->last_frame_ts);
381 ref = vb2_dma_contig_plane_dma_addr(&vb2_dst->vb2_buf, 0);
382 }
383 vdpu_write_relaxed(vpu, ref, G1_REG_ADDR_REF(0));
384
385 ref = hantro_get_ref(ctx, hdr->golden_frame_ts);
386 if (!ref && hdr->golden_frame_ts)
387 vpu_debug(0, "failed to find golden frame ts=%llu\n",
388 hdr->golden_frame_ts);
389 if (!ref)
390 ref = vb2_dma_contig_plane_dma_addr(&vb2_dst->vb2_buf, 0);
391 if (hdr->flags & V4L2_VP8_FRAME_FLAG_SIGN_BIAS_GOLDEN)
392 ref |= G1_REG_ADDR_REF_TOPC_E;
393 vdpu_write_relaxed(vpu, ref, G1_REG_ADDR_REF(4));
394
395 ref = hantro_get_ref(ctx, hdr->alt_frame_ts);
396 if (!ref && hdr->alt_frame_ts)
397 vpu_debug(0, "failed to find alt frame ts=%llu\n",
398 hdr->alt_frame_ts);
399 if (!ref)
400 ref = vb2_dma_contig_plane_dma_addr(&vb2_dst->vb2_buf, 0);
401 if (hdr->flags & V4L2_VP8_FRAME_FLAG_SIGN_BIAS_ALT)
402 ref |= G1_REG_ADDR_REF_TOPC_E;
403 vdpu_write_relaxed(vpu, ref, G1_REG_ADDR_REF(5));
404 }
405
406 static void cfg_buffers(struct hantro_ctx *ctx,
407 const struct v4l2_ctrl_vp8_frame *hdr,
408 struct vb2_v4l2_buffer *vb2_dst)
409 {
410 const struct v4l2_vp8_segment *seg = &hdr->segment;
411 struct hantro_dev *vpu = ctx->dev;
412 dma_addr_t dst_dma;
413 u32 reg;
414
415 /* Set probability table buffer address */
416 vdpu_write_relaxed(vpu, ctx->vp8_dec.prob_tbl.dma,
417 G1_REG_ADDR_QTABLE);
418
419 /* Set segment map address */
420 reg = G1_REG_FWD_PIC1_SEGMENT_BASE(ctx->vp8_dec.segment_map.dma);
421 if (seg->flags & V4L2_VP8_SEGMENT_FLAG_ENABLED) {
422 reg |= G1_REG_FWD_PIC1_SEGMENT_E;
423 if (seg->flags & V4L2_VP8_SEGMENT_FLAG_UPDATE_MAP)
424 reg |= G1_REG_FWD_PIC1_SEGMENT_UPD_E;
425 }
426 vdpu_write_relaxed(vpu, reg, G1_REG_FWD_PIC(0));
427
428 dst_dma = hantro_get_dec_buf_addr(ctx, &vb2_dst->vb2_buf);
429 vdpu_write_relaxed(vpu, dst_dma, G1_REG_ADDR_DST);
430 }
431
432 int hantro_g1_vp8_dec_run(struct hantro_ctx *ctx)
433 {
434 const struct v4l2_ctrl_vp8_frame *hdr;
435 struct hantro_dev *vpu = ctx->dev;
436 struct vb2_v4l2_buffer *vb2_dst;
437 size_t height = ctx->dst_fmt.height;
438 size_t width = ctx->dst_fmt.width;
439 u32 mb_width, mb_height;
440 u32 reg;
441
442 hantro_start_prepare_run(ctx);
443
444 hdr = hantro_get_ctrl(ctx, V4L2_CID_STATELESS_VP8_FRAME);
445 if (WARN_ON(!hdr))
446 return -EINVAL;
447
448 /* Reset segment_map buffer in keyframe */
449 if (V4L2_VP8_FRAME_IS_KEY_FRAME(hdr) && ctx->vp8_dec.segment_map.cpu)
450 memset(ctx->vp8_dec.segment_map.cpu, 0,
451 ctx->vp8_dec.segment_map.size);
452
453 hantro_vp8_prob_update(ctx, hdr);
454
455 reg = G1_REG_CONFIG_DEC_TIMEOUT_E |
456 G1_REG_CONFIG_DEC_STRENDIAN_E |
457 G1_REG_CONFIG_DEC_INSWAP32_E |
458 G1_REG_CONFIG_DEC_STRSWAP32_E |
459 G1_REG_CONFIG_DEC_OUTSWAP32_E |
460 G1_REG_CONFIG_DEC_CLK_GATE_E |
461 G1_REG_CONFIG_DEC_IN_ENDIAN |
462 G1_REG_CONFIG_DEC_OUT_ENDIAN |
463 G1_REG_CONFIG_DEC_MAX_BURST(16);
464 vdpu_write_relaxed(vpu, reg, G1_REG_CONFIG);
465
466 reg = G1_REG_DEC_CTRL0_DEC_MODE(10) |
467 G1_REG_DEC_CTRL0_DEC_AXI_AUTO;
468 if (!V4L2_VP8_FRAME_IS_KEY_FRAME(hdr))
469 reg |= G1_REG_DEC_CTRL0_PIC_INTER_E;
470 if (!(hdr->flags & V4L2_VP8_FRAME_FLAG_MB_NO_SKIP_COEFF))
471 reg |= G1_REG_DEC_CTRL0_SKIP_MODE;
472 if (hdr->lf.level == 0)
473 reg |= G1_REG_DEC_CTRL0_FILTERING_DIS;
474 vdpu_write_relaxed(vpu, reg, G1_REG_DEC_CTRL0);
475
476 /* Frame dimensions */
477 mb_width = MB_WIDTH(width);
478 mb_height = MB_HEIGHT(height);
479 reg = G1_REG_DEC_CTRL1_PIC_MB_WIDTH(mb_width) |
480 G1_REG_DEC_CTRL1_PIC_MB_HEIGHT_P(mb_height) |
481 G1_REG_DEC_CTRL1_PIC_MB_W_EXT(mb_width >> 9) |
482 G1_REG_DEC_CTRL1_PIC_MB_H_EXT(mb_height >> 8);
483 vdpu_write_relaxed(vpu, reg, G1_REG_DEC_CTRL1);
484
485 /* Boolean decoder */
486 reg = G1_REG_DEC_CTRL2_BOOLEAN_RANGE(hdr->coder_state.range)
487 | G1_REG_DEC_CTRL2_BOOLEAN_VALUE(hdr->coder_state.value);
488 vdpu_write_relaxed(vpu, reg, G1_REG_DEC_CTRL2);
489
490 reg = 0;
491 if (hdr->version != 3)
492 reg |= G1_REG_DEC_CTRL4_VC1_HEIGHT_EXT;
493 if (hdr->version & 0x3)
494 reg |= G1_REG_DEC_CTRL4_BILIN_MC_E;
495 vdpu_write_relaxed(vpu, reg, G1_REG_DEC_CTRL4);
496
497 cfg_lf(ctx, hdr);
498 cfg_qp(ctx, hdr);
499 cfg_parts(ctx, hdr);
500 cfg_tap(ctx, hdr);
501
502 vb2_dst = hantro_get_dst_buf(ctx);
503 cfg_ref(ctx, hdr, vb2_dst);
504 cfg_buffers(ctx, hdr, vb2_dst);
505
506 hantro_end_prepare_run(ctx);
507
508 vdpu_write(vpu, G1_REG_INTERRUPT_DEC_E, G1_REG_INTERRUPT);
509
510 return 0;
511 }
Kernel DRM miscellaneous fixes and cross-tree changes