1// SPDX-License-Identifier: GPL-2.0-only 2/* 3 * Copyright (c) 2016 MediaTek Inc. 4 * Author: Ming Hsiu Tsai <minghsiu.tsai@mediatek.com> 5 * Rick Chang <rick.chang@mediatek.com> 6 */ 7 8#include <linux/clk.h> 9#include <linux/interrupt.h> 10#include <linux/irq.h> 11#include <linux/io.h> 12#include <linux/kernel.h> 13#include <linux/module.h> 14#include <linux/of.h> 15#include <linux/platform_device.h> 16#include <linux/pm_runtime.h> 17#include <linux/slab.h> 18#include <media/media-device.h> 19#include <media/videobuf2-core.h> 20#include <media/videobuf2-v4l2.h> 21#include <media/v4l2-mem2mem.h> 22#include <media/v4l2-dev.h> 23#include <media/v4l2-device.h> 24#include <media/v4l2-fh.h> 25#include <media/v4l2-event.h> 26 27#include "mtk_jpeg_core.h" 28#include "mtk_jpeg_dec_hw.h" 29 30#define MTK_JPEG_DUNUM_MASK(val) (((val) - 1) & 0x3) 31 32enum mtk_jpeg_color { 33 MTK_JPEG_COLOR_420 = 0x00221111, 34 MTK_JPEG_COLOR_422 = 0x00211111, 35 MTK_JPEG_COLOR_444 = 0x00111111, 36 MTK_JPEG_COLOR_422V = 0x00121111, 37 MTK_JPEG_COLOR_422X2 = 0x00412121, 38 MTK_JPEG_COLOR_422VX2 = 0x00222121, 39 MTK_JPEG_COLOR_400 = 0x00110000 40}; 41 42static const struct of_device_id mtk_jpegdec_hw_ids[] = { 43 { 44 .compatible = "mediatek,mt8195-jpgdec-hw", 45 }, 46 {}, 47}; 48MODULE_DEVICE_TABLE(of, mtk_jpegdec_hw_ids); 49 50static inline int mtk_jpeg_verify_align(u32 val, int align, u32 reg) 51{ 52 if (val & (align - 1)) { 53 pr_err("mtk-jpeg: write reg %x without %d align\n", reg, align); 54 return -1; 55 } 56 57 return 0; 58} 59 60static int mtk_jpeg_decide_format(struct mtk_jpeg_dec_param *param) 61{ 62 param->src_color = (param->sampling_w[0] << 20) | 63 (param->sampling_h[0] << 16) | 64 (param->sampling_w[1] << 12) | 65 (param->sampling_h[1] << 8) | 66 (param->sampling_w[2] << 4) | 67 (param->sampling_h[2]); 68 69 param->uv_brz_w = 0; 70 switch (param->src_color) { 71 case MTK_JPEG_COLOR_444: 72 param->uv_brz_w = 1; 73 param->dst_fourcc = V4L2_PIX_FMT_YUV422M; 74 break; 75 case MTK_JPEG_COLOR_422X2: 76 case MTK_JPEG_COLOR_422: 77 param->dst_fourcc = V4L2_PIX_FMT_YUV422M; 78 break; 79 case MTK_JPEG_COLOR_422V: 80 case MTK_JPEG_COLOR_422VX2: 81 param->uv_brz_w = 1; 82 param->dst_fourcc = V4L2_PIX_FMT_YUV420M; 83 break; 84 case MTK_JPEG_COLOR_420: 85 param->dst_fourcc = V4L2_PIX_FMT_YUV420M; 86 break; 87 case MTK_JPEG_COLOR_400: 88 param->dst_fourcc = V4L2_PIX_FMT_GREY; 89 break; 90 default: 91 param->dst_fourcc = 0; 92 return -1; 93 } 94 95 return 0; 96} 97 98static void mtk_jpeg_calc_mcu(struct mtk_jpeg_dec_param *param) 99{ 100 u32 factor_w, factor_h; 101 u32 i, comp, blk; 102 103 factor_w = 2 + param->sampling_w[0]; 104 factor_h = 2 + param->sampling_h[0]; 105 param->mcu_w = (param->pic_w + (1 << factor_w) - 1) >> factor_w; 106 param->mcu_h = (param->pic_h + (1 << factor_h) - 1) >> factor_h; 107 param->total_mcu = param->mcu_w * param->mcu_h; 108 param->unit_num = ((param->pic_w + 7) >> 3) * ((param->pic_h + 7) >> 3); 109 param->blk_num = 0; 110 for (i = 0; i < MTK_JPEG_COMP_MAX; i++) { 111 param->blk_comp[i] = 0; 112 if (i >= param->comp_num) 113 continue; 114 param->blk_comp[i] = param->sampling_w[i] * 115 param->sampling_h[i]; 116 param->blk_num += param->blk_comp[i]; 117 } 118 119 param->membership = 0; 120 for (i = 0, blk = 0, comp = 0; i < MTK_JPEG_BLOCK_MAX; i++) { 121 if (i < param->blk_num && comp < param->comp_num) { 122 u32 tmp; 123 124 tmp = (0x04 + (comp & 0x3)); 125 param->membership |= tmp << (i * 3); 126 if (++blk == param->blk_comp[comp]) { 127 comp++; 128 blk = 0; 129 } 130 } else { 131 param->membership |= 7 << (i * 3); 132 } 133 } 134} 135 136static void mtk_jpeg_calc_dma_group(struct mtk_jpeg_dec_param *param) 137{ 138 u32 factor_mcu = 3; 139 140 if (param->src_color == MTK_JPEG_COLOR_444 && 141 param->dst_fourcc == V4L2_PIX_FMT_YUV422M) 142 factor_mcu = 4; 143 else if (param->src_color == MTK_JPEG_COLOR_422V && 144 param->dst_fourcc == V4L2_PIX_FMT_YUV420M) 145 factor_mcu = 4; 146 else if (param->src_color == MTK_JPEG_COLOR_422X2 && 147 param->dst_fourcc == V4L2_PIX_FMT_YUV422M) 148 factor_mcu = 2; 149 else if (param->src_color == MTK_JPEG_COLOR_400 || 150 (param->src_color & 0x0FFFF) == 0) 151 factor_mcu = 4; 152 153 param->dma_mcu = 1 << factor_mcu; 154 param->dma_group = param->mcu_w / param->dma_mcu; 155 param->dma_last_mcu = param->mcu_w % param->dma_mcu; 156 if (param->dma_last_mcu) 157 param->dma_group++; 158 else 159 param->dma_last_mcu = param->dma_mcu; 160} 161 162static int mtk_jpeg_calc_dst_size(struct mtk_jpeg_dec_param *param) 163{ 164 u32 i, padding_w; 165 u32 ds_row_h[3]; 166 u32 brz_w[3]; 167 168 brz_w[0] = 0; 169 brz_w[1] = param->uv_brz_w; 170 brz_w[2] = brz_w[1]; 171 172 for (i = 0; i < param->comp_num; i++) { 173 if (brz_w[i] > 3) 174 return -1; 175 176 padding_w = param->mcu_w * MTK_JPEG_DCTSIZE * 177 param->sampling_w[i]; 178 /* output format is 420/422 */ 179 param->comp_w[i] = padding_w >> brz_w[i]; 180 param->comp_w[i] = round_up(param->comp_w[i], 181 MTK_JPEG_DCTSIZE); 182 param->img_stride[i] = i ? round_up(param->comp_w[i], 16) 183 : round_up(param->comp_w[i], 32); 184 ds_row_h[i] = (MTK_JPEG_DCTSIZE * param->sampling_h[i]); 185 } 186 param->dec_w = param->img_stride[0]; 187 param->dec_h = ds_row_h[0] * param->mcu_h; 188 189 for (i = 0; i < MTK_JPEG_COMP_MAX; i++) { 190 /* They must be equal in frame mode. */ 191 param->mem_stride[i] = param->img_stride[i]; 192 param->comp_size[i] = param->mem_stride[i] * ds_row_h[i] * 193 param->mcu_h; 194 } 195 196 param->y_size = param->comp_size[0]; 197 param->uv_size = param->comp_size[1]; 198 param->dec_size = param->y_size + (param->uv_size << 1); 199 200 return 0; 201} 202 203int mtk_jpeg_dec_fill_param(struct mtk_jpeg_dec_param *param) 204{ 205 if (mtk_jpeg_decide_format(param)) 206 return -1; 207 208 mtk_jpeg_calc_mcu(param); 209 mtk_jpeg_calc_dma_group(param); 210 if (mtk_jpeg_calc_dst_size(param)) 211 return -2; 212 213 return 0; 214} 215EXPORT_SYMBOL_GPL(mtk_jpeg_dec_fill_param); 216 217u32 mtk_jpeg_dec_get_int_status(void __iomem *base) 218{ 219 u32 ret; 220 221 ret = readl(base + JPGDEC_REG_INTERRUPT_STATUS) & BIT_INQST_MASK_ALLIRQ; 222 if (ret) 223 writel(ret, base + JPGDEC_REG_INTERRUPT_STATUS); 224 225 return ret; 226} 227EXPORT_SYMBOL_GPL(mtk_jpeg_dec_get_int_status); 228 229u32 mtk_jpeg_dec_enum_result(u32 irq_result) 230{ 231 if (irq_result & BIT_INQST_MASK_EOF) 232 return MTK_JPEG_DEC_RESULT_EOF_DONE; 233 if (irq_result & BIT_INQST_MASK_PAUSE) 234 return MTK_JPEG_DEC_RESULT_PAUSE; 235 if (irq_result & BIT_INQST_MASK_UNDERFLOW) 236 return MTK_JPEG_DEC_RESULT_UNDERFLOW; 237 if (irq_result & BIT_INQST_MASK_OVERFLOW) 238 return MTK_JPEG_DEC_RESULT_OVERFLOW; 239 if (irq_result & BIT_INQST_MASK_ERROR_BS) 240 return MTK_JPEG_DEC_RESULT_ERROR_BS; 241 242 return MTK_JPEG_DEC_RESULT_ERROR_UNKNOWN; 243} 244EXPORT_SYMBOL_GPL(mtk_jpeg_dec_enum_result); 245 246void mtk_jpeg_dec_start(void __iomem *base) 247{ 248 writel(0, base + JPGDEC_REG_TRIG); 249} 250EXPORT_SYMBOL_GPL(mtk_jpeg_dec_start); 251 252static void mtk_jpeg_dec_soft_reset(void __iomem *base) 253{ 254 writel(0x0000FFFF, base + JPGDEC_REG_INTERRUPT_STATUS); 255 writel(0x00, base + JPGDEC_REG_RESET); 256 writel(0x01, base + JPGDEC_REG_RESET); 257} 258 259static void mtk_jpeg_dec_hard_reset(void __iomem *base) 260{ 261 writel(0x00, base + JPGDEC_REG_RESET); 262 writel(0x10, base + JPGDEC_REG_RESET); 263} 264 265void mtk_jpeg_dec_reset(void __iomem *base) 266{ 267 mtk_jpeg_dec_soft_reset(base); 268 mtk_jpeg_dec_hard_reset(base); 269} 270EXPORT_SYMBOL_GPL(mtk_jpeg_dec_reset); 271 272static void mtk_jpeg_dec_set_brz_factor(void __iomem *base, u8 yscale_w, 273 u8 yscale_h, u8 uvscale_w, u8 uvscale_h) 274{ 275 u32 val; 276 277 val = (uvscale_h << 12) | (uvscale_w << 8) | 278 (yscale_h << 4) | yscale_w; 279 writel(val, base + JPGDEC_REG_BRZ_FACTOR); 280} 281 282static void mtk_jpeg_dec_set_dst_bank0(void __iomem *base, u32 addr_y, 283 u32 addr_u, u32 addr_v) 284{ 285 mtk_jpeg_verify_align(addr_y, 16, JPGDEC_REG_DEST_ADDR0_Y); 286 writel(addr_y, base + JPGDEC_REG_DEST_ADDR0_Y); 287 mtk_jpeg_verify_align(addr_u, 16, JPGDEC_REG_DEST_ADDR0_U); 288 writel(addr_u, base + JPGDEC_REG_DEST_ADDR0_U); 289 mtk_jpeg_verify_align(addr_v, 16, JPGDEC_REG_DEST_ADDR0_V); 290 writel(addr_v, base + JPGDEC_REG_DEST_ADDR0_V); 291} 292 293static void mtk_jpeg_dec_set_dst_bank1(void __iomem *base, u32 addr_y, 294 u32 addr_u, u32 addr_v) 295{ 296 writel(addr_y, base + JPGDEC_REG_DEST_ADDR1_Y); 297 writel(addr_u, base + JPGDEC_REG_DEST_ADDR1_U); 298 writel(addr_v, base + JPGDEC_REG_DEST_ADDR1_V); 299} 300 301static void mtk_jpeg_dec_set_mem_stride(void __iomem *base, u32 stride_y, 302 u32 stride_uv) 303{ 304 writel((stride_y & 0xFFFF), base + JPGDEC_REG_STRIDE_Y); 305 writel((stride_uv & 0xFFFF), base + JPGDEC_REG_STRIDE_UV); 306} 307 308static void mtk_jpeg_dec_set_img_stride(void __iomem *base, u32 stride_y, 309 u32 stride_uv) 310{ 311 writel((stride_y & 0xFFFF), base + JPGDEC_REG_IMG_STRIDE_Y); 312 writel((stride_uv & 0xFFFF), base + JPGDEC_REG_IMG_STRIDE_UV); 313} 314 315static void mtk_jpeg_dec_set_pause_mcu_idx(void __iomem *base, u32 idx) 316{ 317 writel(idx & 0x0003FFFFFF, base + JPGDEC_REG_PAUSE_MCU_NUM); 318} 319 320static void mtk_jpeg_dec_set_dec_mode(void __iomem *base, u32 mode) 321{ 322 writel(mode & 0x03, base + JPGDEC_REG_OPERATION_MODE); 323} 324 325static void mtk_jpeg_dec_set_bs_write_ptr(void __iomem *base, u32 ptr) 326{ 327 mtk_jpeg_verify_align(ptr, 16, JPGDEC_REG_FILE_BRP); 328 writel(ptr, base + JPGDEC_REG_FILE_BRP); 329} 330 331static void mtk_jpeg_dec_set_bs_info(void __iomem *base, u32 addr, u32 size, 332 u32 bitstream_size) 333{ 334 mtk_jpeg_verify_align(addr, 16, JPGDEC_REG_FILE_ADDR); 335 mtk_jpeg_verify_align(size, 128, JPGDEC_REG_FILE_TOTAL_SIZE); 336 writel(addr, base + JPGDEC_REG_FILE_ADDR); 337 writel(size, base + JPGDEC_REG_FILE_TOTAL_SIZE); 338 writel(bitstream_size, base + JPGDEC_REG_BIT_STREAM_SIZE); 339} 340 341static void mtk_jpeg_dec_set_comp_id(void __iomem *base, u32 id_y, u32 id_u, 342 u32 id_v) 343{ 344 u32 val; 345 346 val = ((id_y & 0x00FF) << 24) | ((id_u & 0x00FF) << 16) | 347 ((id_v & 0x00FF) << 8); 348 writel(val, base + JPGDEC_REG_COMP_ID); 349} 350 351static void mtk_jpeg_dec_set_total_mcu(void __iomem *base, u32 num) 352{ 353 writel(num - 1, base + JPGDEC_REG_TOTAL_MCU_NUM); 354} 355 356static void mtk_jpeg_dec_set_comp0_du(void __iomem *base, u32 num) 357{ 358 writel(num - 1, base + JPGDEC_REG_COMP0_DATA_UNIT_NUM); 359} 360 361static void mtk_jpeg_dec_set_du_membership(void __iomem *base, u32 member, 362 u32 gmc, u32 isgray) 363{ 364 if (isgray) 365 member = 0x3FFFFFFC; 366 member |= (isgray << 31) | (gmc << 30); 367 writel(member, base + JPGDEC_REG_DU_CTRL); 368} 369 370static void mtk_jpeg_dec_set_q_table(void __iomem *base, u32 id0, u32 id1, 371 u32 id2) 372{ 373 u32 val; 374 375 val = ((id0 & 0x0f) << 8) | ((id1 & 0x0f) << 4) | ((id2 & 0x0f) << 0); 376 writel(val, base + JPGDEC_REG_QT_ID); 377} 378 379static void mtk_jpeg_dec_set_dma_group(void __iomem *base, u32 mcu_group, 380 u32 group_num, u32 last_mcu) 381{ 382 u32 val; 383 384 val = (((mcu_group - 1) & 0x00FF) << 16) | 385 (((group_num - 1) & 0x007F) << 8) | 386 ((last_mcu - 1) & 0x00FF); 387 writel(val, base + JPGDEC_REG_WDMA_CTRL); 388} 389 390static void mtk_jpeg_dec_set_sampling_factor(void __iomem *base, u32 comp_num, 391 u32 y_w, u32 y_h, u32 u_w, 392 u32 u_h, u32 v_w, u32 v_h) 393{ 394 u32 val; 395 u32 y_wh = (MTK_JPEG_DUNUM_MASK(y_w) << 2) | MTK_JPEG_DUNUM_MASK(y_h); 396 u32 u_wh = (MTK_JPEG_DUNUM_MASK(u_w) << 2) | MTK_JPEG_DUNUM_MASK(u_h); 397 u32 v_wh = (MTK_JPEG_DUNUM_MASK(v_w) << 2) | MTK_JPEG_DUNUM_MASK(v_h); 398 399 if (comp_num == 1) 400 val = 0; 401 else 402 val = (y_wh << 8) | (u_wh << 4) | v_wh; 403 writel(val, base + JPGDEC_REG_DU_NUM); 404} 405 406void mtk_jpeg_dec_set_config(void __iomem *base, 407 struct mtk_jpeg_dec_param *cfg, 408 u32 bitstream_size, 409 struct mtk_jpeg_bs *bs, 410 struct mtk_jpeg_fb *fb) 411{ 412 mtk_jpeg_dec_set_brz_factor(base, 0, 0, cfg->uv_brz_w, 0); 413 mtk_jpeg_dec_set_dec_mode(base, 0); 414 mtk_jpeg_dec_set_comp0_du(base, cfg->unit_num); 415 mtk_jpeg_dec_set_total_mcu(base, cfg->total_mcu); 416 mtk_jpeg_dec_set_bs_info(base, bs->str_addr, bs->size, bitstream_size); 417 mtk_jpeg_dec_set_bs_write_ptr(base, bs->end_addr); 418 mtk_jpeg_dec_set_du_membership(base, cfg->membership, 1, 419 (cfg->comp_num == 1) ? 1 : 0); 420 mtk_jpeg_dec_set_comp_id(base, cfg->comp_id[0], cfg->comp_id[1], 421 cfg->comp_id[2]); 422 mtk_jpeg_dec_set_q_table(base, cfg->qtbl_num[0], 423 cfg->qtbl_num[1], cfg->qtbl_num[2]); 424 mtk_jpeg_dec_set_sampling_factor(base, cfg->comp_num, 425 cfg->sampling_w[0], 426 cfg->sampling_h[0], 427 cfg->sampling_w[1], 428 cfg->sampling_h[1], 429 cfg->sampling_w[2], 430 cfg->sampling_h[2]); 431 mtk_jpeg_dec_set_mem_stride(base, cfg->mem_stride[0], 432 cfg->mem_stride[1]); 433 mtk_jpeg_dec_set_img_stride(base, cfg->img_stride[0], 434 cfg->img_stride[1]); 435 mtk_jpeg_dec_set_dst_bank0(base, fb->plane_addr[0], 436 fb->plane_addr[1], fb->plane_addr[2]); 437 mtk_jpeg_dec_set_dst_bank1(base, 0, 0, 0); 438 mtk_jpeg_dec_set_dma_group(base, cfg->dma_mcu, cfg->dma_group, 439 cfg->dma_last_mcu); 440 mtk_jpeg_dec_set_pause_mcu_idx(base, cfg->total_mcu); 441} 442EXPORT_SYMBOL_GPL(mtk_jpeg_dec_set_config); 443 444static void mtk_jpegdec_put_buf(struct mtk_jpegdec_comp_dev *jpeg) 445{ 446 struct mtk_jpeg_src_buf *dst_done_buf, *tmp_dst_done_buf; 447 struct vb2_v4l2_buffer *dst_buffer; 448 struct list_head *temp_entry; 449 struct list_head *pos = NULL; 450 struct mtk_jpeg_ctx *ctx; 451 unsigned long flags; 452 453 ctx = jpeg->hw_param.curr_ctx; 454 if (unlikely(!ctx)) { 455 dev_err(jpeg->dev, "comp_jpeg ctx fail !!!\n"); 456 return; 457 } 458 459 dst_buffer = jpeg->hw_param.dst_buffer; 460 if (!dst_buffer) { 461 dev_err(jpeg->dev, "comp_jpeg dst_buffer fail !!!\n"); 462 return; 463 } 464 465 dst_done_buf = container_of(dst_buffer, struct mtk_jpeg_src_buf, b); 466 467 spin_lock_irqsave(&ctx->done_queue_lock, flags); 468 list_add_tail(&dst_done_buf->list, &ctx->dst_done_queue); 469 while (!list_empty(&ctx->dst_done_queue) && 470 (pos != &ctx->dst_done_queue)) { 471 list_for_each_prev_safe(pos, temp_entry, &ctx->dst_done_queue) { 472 tmp_dst_done_buf = list_entry(pos, 473 struct mtk_jpeg_src_buf, 474 list); 475 if (tmp_dst_done_buf->frame_num == 476 ctx->last_done_frame_num) { 477 list_del(&tmp_dst_done_buf->list); 478 v4l2_m2m_buf_done(&tmp_dst_done_buf->b, 479 VB2_BUF_STATE_DONE); 480 ctx->last_done_frame_num++; 481 } 482 } 483 } 484 spin_unlock_irqrestore(&ctx->done_queue_lock, flags); 485} 486 487static void mtk_jpegdec_timeout_work(struct work_struct *work) 488{ 489 enum vb2_buffer_state buf_state = VB2_BUF_STATE_ERROR; 490 struct mtk_jpegdec_comp_dev *cjpeg = 491 container_of(work, struct mtk_jpegdec_comp_dev, 492 job_timeout_work.work); 493 struct mtk_jpeg_dev *master_jpeg = cjpeg->master_dev; 494 struct vb2_v4l2_buffer *src_buf, *dst_buf; 495 496 src_buf = cjpeg->hw_param.src_buffer; 497 dst_buf = cjpeg->hw_param.dst_buffer; 498 v4l2_m2m_buf_copy_metadata(src_buf, dst_buf, true); 499 500 mtk_jpeg_dec_reset(cjpeg->reg_base); 501 clk_disable_unprepare(cjpeg->jdec_clk.clks->clk); 502 pm_runtime_put(cjpeg->dev); 503 cjpeg->hw_state = MTK_JPEG_HW_IDLE; 504 atomic_inc(&master_jpeg->hw_rdy); 505 wake_up(&master_jpeg->hw_wq); 506 v4l2_m2m_buf_done(src_buf, buf_state); 507 mtk_jpegdec_put_buf(cjpeg); 508} 509 510static irqreturn_t mtk_jpegdec_hw_irq_handler(int irq, void *priv) 511{ 512 struct vb2_v4l2_buffer *src_buf, *dst_buf; 513 struct mtk_jpeg_src_buf *jpeg_src_buf; 514 enum vb2_buffer_state buf_state; 515 struct mtk_jpeg_ctx *ctx; 516 u32 dec_irq_ret; 517 u32 irq_status; 518 int i; 519 520 struct mtk_jpegdec_comp_dev *jpeg = priv; 521 struct mtk_jpeg_dev *master_jpeg = jpeg->master_dev; 522 523 cancel_delayed_work(&jpeg->job_timeout_work); 524 525 ctx = jpeg->hw_param.curr_ctx; 526 src_buf = jpeg->hw_param.src_buffer; 527 dst_buf = jpeg->hw_param.dst_buffer; 528 v4l2_m2m_buf_copy_metadata(src_buf, dst_buf, true); 529 530 irq_status = mtk_jpeg_dec_get_int_status(jpeg->reg_base); 531 dec_irq_ret = mtk_jpeg_dec_enum_result(irq_status); 532 if (dec_irq_ret >= MTK_JPEG_DEC_RESULT_UNDERFLOW) 533 mtk_jpeg_dec_reset(jpeg->reg_base); 534 535 if (dec_irq_ret != MTK_JPEG_DEC_RESULT_EOF_DONE) 536 dev_warn(jpeg->dev, "Jpg Dec occurs unknown Err."); 537 538 jpeg_src_buf = 539 container_of(src_buf, struct mtk_jpeg_src_buf, b); 540 541 for (i = 0; i < dst_buf->vb2_buf.num_planes; i++) 542 vb2_set_plane_payload(&dst_buf->vb2_buf, i, 543 jpeg_src_buf->dec_param.comp_size[i]); 544 545 buf_state = VB2_BUF_STATE_DONE; 546 v4l2_m2m_buf_done(src_buf, buf_state); 547 mtk_jpegdec_put_buf(jpeg); 548 pm_runtime_put(ctx->jpeg->dev); 549 clk_disable_unprepare(jpeg->jdec_clk.clks->clk); 550 551 jpeg->hw_state = MTK_JPEG_HW_IDLE; 552 wake_up(&master_jpeg->hw_wq); 553 atomic_inc(&master_jpeg->hw_rdy); 554 555 return IRQ_HANDLED; 556} 557 558static int mtk_jpegdec_hw_init_irq(struct mtk_jpegdec_comp_dev *dev) 559{ 560 struct platform_device *pdev = dev->plat_dev; 561 int ret; 562 563 dev->jpegdec_irq = platform_get_irq(pdev, 0); 564 if (dev->jpegdec_irq < 0) 565 return dev->jpegdec_irq; 566 567 ret = devm_request_irq(&pdev->dev, 568 dev->jpegdec_irq, 569 mtk_jpegdec_hw_irq_handler, 570 0, 571 pdev->name, dev); 572 if (ret) { 573 dev_err(&pdev->dev, "Failed to devm_request_irq %d (%d)", 574 dev->jpegdec_irq, ret); 575 return ret; 576 } 577 578 return 0; 579} 580 581static void mtk_jpegdec_destroy_workqueue(void *data) 582{ 583 destroy_workqueue(data); 584} 585 586static int mtk_jpegdec_hw_probe(struct platform_device *pdev) 587{ 588 struct mtk_jpegdec_clk *jpegdec_clk; 589 struct mtk_jpeg_dev *master_dev; 590 struct mtk_jpegdec_comp_dev *dev; 591 int ret, i; 592 593 struct device *decs = &pdev->dev; 594 595 if (!decs->parent) 596 return -EPROBE_DEFER; 597 598 master_dev = dev_get_drvdata(decs->parent); 599 if (!master_dev) 600 return -EPROBE_DEFER; 601 602 dev = devm_kzalloc(&pdev->dev, sizeof(*dev), GFP_KERNEL); 603 if (!dev) 604 return -ENOMEM; 605 606 dev->plat_dev = pdev; 607 dev->dev = &pdev->dev; 608 609 ret = devm_add_action_or_reset(&pdev->dev, 610 mtk_jpegdec_destroy_workqueue, 611 master_dev->workqueue); 612 if (ret) 613 return ret; 614 615 spin_lock_init(&dev->hw_lock); 616 dev->hw_state = MTK_JPEG_HW_IDLE; 617 618 INIT_DELAYED_WORK(&dev->job_timeout_work, 619 mtk_jpegdec_timeout_work); 620 621 jpegdec_clk = &dev->jdec_clk; 622 623 jpegdec_clk->clk_num = devm_clk_bulk_get_all(&pdev->dev, 624 &jpegdec_clk->clks); 625 if (jpegdec_clk->clk_num < 0) 626 return dev_err_probe(&pdev->dev, 627 jpegdec_clk->clk_num, 628 "Failed to get jpegdec clock count.\n"); 629 630 dev->reg_base = devm_platform_ioremap_resource(pdev, 0); 631 if (IS_ERR(dev->reg_base)) 632 return PTR_ERR(dev->reg_base); 633 634 ret = mtk_jpegdec_hw_init_irq(dev); 635 if (ret) 636 return dev_err_probe(&pdev->dev, ret, 637 "Failed to register JPEGDEC irq handler.\n"); 638 639 i = atomic_add_return(1, &master_dev->hw_index) - 1; 640 master_dev->dec_hw_dev[i] = dev; 641 master_dev->reg_decbase[i] = dev->reg_base; 642 dev->master_dev = master_dev; 643 644 platform_set_drvdata(pdev, dev); 645 pm_runtime_enable(&pdev->dev); 646 647 return 0; 648} 649 650static struct platform_driver mtk_jpegdec_hw_driver = { 651 .probe = mtk_jpegdec_hw_probe, 652 .driver = { 653 .name = "mtk-jpegdec-hw", 654 .of_match_table = mtk_jpegdec_hw_ids, 655 }, 656}; 657 658module_platform_driver(mtk_jpegdec_hw_driver); 659 660MODULE_DESCRIPTION("MediaTek JPEG decode HW driver"); 661MODULE_LICENSE("GPL"); 662