From b313bcc9a46795c0233a765411cef9a15caaa7fb Mon Sep 17 00:00:00 2001 From: Philipp Zabel Date: Fri, 11 Jul 2014 06:36:16 -0300 Subject: [PATCH] [media] coda: simplify IRAM setup OVL and BTP IRAM buffers are never used, setup the bits for for DBK/BIT/IP usage depending on CODA version in one place. Also, use a simple allocator function and group IRAM addresses and size in a coda_aux_buf structure. This is done in preparation for CODA960 support. Signed-off-by: Philipp Zabel Signed-off-by: Kamil Debski Signed-off-by: Mauro Carvalho Chehab --- drivers/media/platform/coda.c | 175 ++++++++++++++-------------------- 1 file changed, 74 insertions(+), 101 deletions(-) diff --git a/drivers/media/platform/coda.c b/drivers/media/platform/coda.c index 21c272ec481c..31a1848f3674 100644 --- a/drivers/media/platform/coda.c +++ b/drivers/media/platform/coda.c @@ -135,9 +135,7 @@ struct coda_dev { struct coda_aux_buf tempbuf; struct coda_aux_buf workbuf; struct gen_pool *iram_pool; - long unsigned int iram_vaddr; - long unsigned int iram_paddr; - unsigned long iram_size; + struct coda_aux_buf iram; spinlock_t irqlock; struct mutex dev_mutex; @@ -175,6 +173,8 @@ struct coda_iram_info { phys_addr_t buf_btp_use; phys_addr_t search_ram_paddr; int search_ram_size; + int remaining; + phys_addr_t next_paddr; }; struct coda_ctx { @@ -1578,23 +1578,43 @@ static int coda_h264_padding(int size, char *p) return nal_size; } +static phys_addr_t coda_iram_alloc(struct coda_iram_info *iram, size_t size) +{ + phys_addr_t ret; + + size = round_up(size, 1024); + if (size > iram->remaining) + return 0; + iram->remaining -= size; + + ret = iram->next_paddr; + iram->next_paddr += size; + + return ret; +} + static void coda_setup_iram(struct coda_ctx *ctx) { struct coda_iram_info *iram_info = &ctx->iram_info; struct coda_dev *dev = ctx->dev; - int ipacdc_size; - int bitram_size; - int dbk_size; - int ovl_size; int mb_width; - int me_size; - int size; + int dbk_bits; + int bit_bits; + int ip_bits; memset(iram_info, 0, sizeof(*iram_info)); - size = dev->iram_size; + iram_info->next_paddr = dev->iram.paddr; + iram_info->remaining = dev->iram.size; - if (dev->devtype->product == CODA_DX6) + switch (dev->devtype->product) { + case CODA_7541: + dbk_bits = CODA7_USE_HOST_DBK_ENABLE | CODA7_USE_DBK_ENABLE; + bit_bits = CODA7_USE_HOST_BIT_ENABLE | CODA7_USE_BIT_ENABLE; + ip_bits = CODA7_USE_HOST_IP_ENABLE | CODA7_USE_IP_ENABLE; + break; + default: /* CODA_DX6 */ return; + } if (ctx->inst_type == CODA_INST_ENCODER) { struct coda_q_data *q_data_src; @@ -1603,111 +1623,63 @@ static void coda_setup_iram(struct coda_ctx *ctx) mb_width = DIV_ROUND_UP(q_data_src->width, 16); /* Prioritize in case IRAM is too small for everything */ - me_size = round_up(round_up(q_data_src->width, 16) * 36 + 2048, - 1024); - iram_info->search_ram_size = me_size; - if (size >= iram_info->search_ram_size) { - if (dev->devtype->product == CODA_7541) - iram_info->axi_sram_use |= CODA7_USE_HOST_ME_ENABLE; - iram_info->search_ram_paddr = dev->iram_paddr; - size -= iram_info->search_ram_size; - } else { - pr_err("IRAM is smaller than the search ram size\n"); - goto out; + if (dev->devtype->product == CODA_7541) { + iram_info->search_ram_size = round_up(mb_width * 16 * + 36 + 2048, 1024); + iram_info->search_ram_paddr = coda_iram_alloc(iram_info, + iram_info->search_ram_size); + if (!iram_info->search_ram_paddr) { + pr_err("IRAM is smaller than the search ram size\n"); + goto out; + } + iram_info->axi_sram_use |= CODA7_USE_HOST_ME_ENABLE | + CODA7_USE_ME_ENABLE; } /* Only H.264BP and H.263P3 are considered */ - dbk_size = round_up(128 * mb_width, 1024); - if (size >= dbk_size) { - iram_info->axi_sram_use |= CODA7_USE_HOST_DBK_ENABLE; - iram_info->buf_dbk_y_use = dev->iram_paddr + - iram_info->search_ram_size; - iram_info->buf_dbk_c_use = iram_info->buf_dbk_y_use + - dbk_size / 2; - size -= dbk_size; - } else { + iram_info->buf_dbk_y_use = coda_iram_alloc(iram_info, 64 * mb_width); + iram_info->buf_dbk_c_use = coda_iram_alloc(iram_info, 64 * mb_width); + if (!iram_info->buf_dbk_c_use) goto out; - } + iram_info->axi_sram_use |= dbk_bits; - bitram_size = round_up(128 * mb_width, 1024); - if (size >= bitram_size) { - iram_info->axi_sram_use |= CODA7_USE_HOST_BIT_ENABLE; - iram_info->buf_bit_use = iram_info->buf_dbk_c_use + - dbk_size / 2; - size -= bitram_size; - } else { + iram_info->buf_bit_use = coda_iram_alloc(iram_info, 128 * mb_width); + if (!iram_info->buf_bit_use) goto out; - } + iram_info->axi_sram_use |= bit_bits; - ipacdc_size = round_up(128 * mb_width, 1024); - if (size >= ipacdc_size) { - iram_info->axi_sram_use |= CODA7_USE_HOST_IP_ENABLE; - iram_info->buf_ip_ac_dc_use = iram_info->buf_bit_use + - bitram_size; - size -= ipacdc_size; - } + iram_info->buf_ip_ac_dc_use = coda_iram_alloc(iram_info, 128 * mb_width); + if (!iram_info->buf_ip_ac_dc_use) + goto out; + iram_info->axi_sram_use |= ip_bits; /* OVL and BTP disabled for encoder */ } else if (ctx->inst_type == CODA_INST_DECODER) { struct coda_q_data *q_data_dst; - int mb_height; q_data_dst = get_q_data(ctx, V4L2_BUF_TYPE_VIDEO_CAPTURE); mb_width = DIV_ROUND_UP(q_data_dst->width, 16); - mb_height = DIV_ROUND_UP(q_data_dst->height, 16); - - dbk_size = round_up(256 * mb_width, 1024); - if (size >= dbk_size) { - iram_info->axi_sram_use |= CODA7_USE_HOST_DBK_ENABLE; - iram_info->buf_dbk_y_use = dev->iram_paddr; - iram_info->buf_dbk_c_use = dev->iram_paddr + - dbk_size / 2; - size -= dbk_size; - } else { + + iram_info->buf_dbk_y_use = coda_iram_alloc(iram_info, 128 * mb_width); + iram_info->buf_dbk_c_use = coda_iram_alloc(iram_info, 128 * mb_width); + if (!iram_info->buf_dbk_c_use) goto out; - } + iram_info->axi_sram_use |= dbk_bits; - bitram_size = round_up(128 * mb_width, 1024); - if (size >= bitram_size) { - iram_info->axi_sram_use |= CODA7_USE_HOST_BIT_ENABLE; - iram_info->buf_bit_use = iram_info->buf_dbk_c_use + - dbk_size / 2; - size -= bitram_size; - } else { + iram_info->buf_bit_use = coda_iram_alloc(iram_info, 128 * mb_width); + if (!iram_info->buf_bit_use) goto out; - } + iram_info->axi_sram_use |= bit_bits; - ipacdc_size = round_up(128 * mb_width, 1024); - if (size >= ipacdc_size) { - iram_info->axi_sram_use |= CODA7_USE_HOST_IP_ENABLE; - iram_info->buf_ip_ac_dc_use = iram_info->buf_bit_use + - bitram_size; - size -= ipacdc_size; - } else { + iram_info->buf_ip_ac_dc_use = coda_iram_alloc(iram_info, 128 * mb_width); + if (!iram_info->buf_ip_ac_dc_use) goto out; - } + iram_info->axi_sram_use |= ip_bits; - ovl_size = round_up(80 * mb_width, 1024); + /* OVL and BTP unused as there is no VC1 support yet */ } out: - switch (dev->devtype->product) { - case CODA_DX6: - break; - case CODA_7541: - /* i.MX53 uses secondary AXI for IRAM access */ - if (iram_info->axi_sram_use & CODA7_USE_HOST_BIT_ENABLE) - iram_info->axi_sram_use |= CODA7_USE_BIT_ENABLE; - if (iram_info->axi_sram_use & CODA7_USE_HOST_IP_ENABLE) - iram_info->axi_sram_use |= CODA7_USE_IP_ENABLE; - if (iram_info->axi_sram_use & CODA7_USE_HOST_DBK_ENABLE) - iram_info->axi_sram_use |= CODA7_USE_DBK_ENABLE; - if (iram_info->axi_sram_use & CODA7_USE_HOST_OVL_ENABLE) - iram_info->axi_sram_use |= CODA7_USE_OVL_ENABLE; - if (iram_info->axi_sram_use & CODA7_USE_HOST_ME_ENABLE) - iram_info->axi_sram_use |= CODA7_USE_ME_ENABLE; - } - if (!(iram_info->axi_sram_use & CODA7_USE_HOST_IP_ENABLE)) v4l2_dbg(1, coda_debug, &ctx->dev->v4l2_dev, "IRAM smaller than needed\n"); @@ -2063,7 +2035,7 @@ static int coda_start_streaming(struct vb2_queue *q, unsigned int count) if (dev->devtype->product == CODA_DX6) { /* Configure the coda */ - coda_write(dev, dev->iram_paddr, CODADX6_REG_BIT_SEARCH_RAM_BASE_ADDR); + coda_write(dev, dev->iram.paddr, CODADX6_REG_BIT_SEARCH_RAM_BASE_ADDR); } /* Could set rotation here if needed */ @@ -3296,15 +3268,15 @@ static int coda_probe(struct platform_device *pdev) switch (dev->devtype->product) { case CODA_DX6: - dev->iram_size = CODADX6_IRAM_SIZE; + dev->iram.size = CODADX6_IRAM_SIZE; break; case CODA_7541: - dev->iram_size = CODA7_IRAM_SIZE; + dev->iram.size = CODA7_IRAM_SIZE; break; } - dev->iram_vaddr = (unsigned long)gen_pool_dma_alloc(dev->iram_pool, - dev->iram_size, (dma_addr_t *)&dev->iram_paddr); - if (!dev->iram_vaddr) { + dev->iram.vaddr = gen_pool_dma_alloc(dev->iram_pool, dev->iram.size, + &dev->iram.paddr); + if (!dev->iram.vaddr) { dev_err(&pdev->dev, "unable to alloc iram\n"); return -ENOMEM; } @@ -3324,8 +3296,9 @@ static int coda_remove(struct platform_device *pdev) if (dev->alloc_ctx) vb2_dma_contig_cleanup_ctx(dev->alloc_ctx); v4l2_device_unregister(&dev->v4l2_dev); - if (dev->iram_vaddr) - gen_pool_free(dev->iram_pool, dev->iram_vaddr, dev->iram_size); + if (dev->iram.vaddr) + gen_pool_free(dev->iram_pool, (unsigned long)dev->iram.vaddr, + dev->iram.size); coda_free_aux_buf(dev, &dev->codebuf); coda_free_aux_buf(dev, &dev->tempbuf); coda_free_aux_buf(dev, &dev->workbuf); -- 2.39.5