diff options
Diffstat (limited to 'drivers/media/platform/mediatek/jpeg/mtk_jpeg_enc_hw.c')
-rw-r--r-- | drivers/media/platform/mediatek/jpeg/mtk_jpeg_enc_hw.c | 255 |
1 files changed, 255 insertions, 0 deletions
diff --git a/drivers/media/platform/mediatek/jpeg/mtk_jpeg_enc_hw.c b/drivers/media/platform/mediatek/jpeg/mtk_jpeg_enc_hw.c index 1cf037bf72dd..1bbb712d78d0 100644 --- a/drivers/media/platform/mediatek/jpeg/mtk_jpeg_enc_hw.c +++ b/drivers/media/platform/mediatek/jpeg/mtk_jpeg_enc_hw.c @@ -5,11 +5,27 @@ * */ +#include <linux/clk.h> +#include <linux/interrupt.h> +#include <linux/irq.h> #include <linux/io.h> #include <linux/kernel.h> +#include <linux/module.h> +#include <linux/of.h> +#include <linux/of_device.h> +#include <linux/pm_runtime.h> +#include <linux/slab.h> +#include <media/media-device.h> #include <media/videobuf2-core.h> #include <media/videobuf2-dma-contig.h> +#include <media/videobuf2-v4l2.h> +#include <media/v4l2-mem2mem.h> +#include <media/v4l2-dev.h> +#include <media/v4l2-device.h> +#include <media/v4l2-fh.h> +#include <media/v4l2-event.h> +#include "mtk_jpeg_core.h" #include "mtk_jpeg_enc_hw.h" static const struct mtk_jpeg_enc_qlt mtk_jpeg_enc_quality[] = { @@ -30,18 +46,30 @@ static const struct mtk_jpeg_enc_qlt mtk_jpeg_enc_quality[] = { {.quality_param = 97, .hardware_value = JPEG_ENC_QUALITY_Q97}, }; +#if defined(CONFIG_OF) +static const struct of_device_id mtk_jpegenc_drv_ids[] = { + { + .compatible = "mediatek,mt8195-jpgenc-hw", + }, + {}, +}; +MODULE_DEVICE_TABLE(of, mtk_jpegenc_drv_ids); +#endif + void mtk_jpeg_enc_reset(void __iomem *base) { writel(0, base + JPEG_ENC_RSTB); writel(JPEG_ENC_RESET_BIT, base + JPEG_ENC_RSTB); writel(0, base + JPEG_ENC_CODEC_SEL); } +EXPORT_SYMBOL_GPL(mtk_jpeg_enc_reset); u32 mtk_jpeg_enc_get_file_size(void __iomem *base) { return readl(base + JPEG_ENC_DMA_ADDR0) - readl(base + JPEG_ENC_DST_ADDR0); } +EXPORT_SYMBOL_GPL(mtk_jpeg_enc_get_file_size); void mtk_jpeg_enc_start(void __iomem *base) { @@ -51,6 +79,7 @@ void mtk_jpeg_enc_start(void __iomem *base) value |= JPEG_ENC_CTRL_INT_EN_BIT | JPEG_ENC_CTRL_ENABLE_BIT; writel(value, base + JPEG_ENC_CTRL); } +EXPORT_SYMBOL_GPL(mtk_jpeg_enc_start); void mtk_jpeg_set_enc_src(struct mtk_jpeg_ctx *ctx, void __iomem *base, struct vb2_buffer *src_buf) @@ -67,6 +96,7 @@ void mtk_jpeg_set_enc_src(struct mtk_jpeg_ctx *ctx, void __iomem *base, writel(dma_addr, base + JPEG_ENC_SRC_CHROMA_ADDR); } } +EXPORT_SYMBOL_GPL(mtk_jpeg_set_enc_src); void mtk_jpeg_set_enc_dst(struct mtk_jpeg_ctx *ctx, void __iomem *base, struct vb2_buffer *dst_buf) @@ -86,6 +116,7 @@ void mtk_jpeg_set_enc_dst(struct mtk_jpeg_ctx *ctx, void __iomem *base, writel(dma_addr & ~0xf, base + JPEG_ENC_DST_ADDR0); writel((dma_addr + size) & ~0xf, base + JPEG_ENC_STALL_ADDR0); } +EXPORT_SYMBOL_GPL(mtk_jpeg_set_enc_dst); void mtk_jpeg_set_enc_params(struct mtk_jpeg_ctx *ctx, void __iomem *base) { @@ -152,3 +183,227 @@ void mtk_jpeg_set_enc_params(struct mtk_jpeg_ctx *ctx, void __iomem *base) writel(ctx->restart_interval, base + JPEG_ENC_RST_MCU_NUM); } +EXPORT_SYMBOL_GPL(mtk_jpeg_set_enc_params); + +static void mtk_jpegenc_put_buf(struct mtk_jpegenc_comp_dev *jpeg) +{ + struct mtk_jpeg_ctx *ctx; + struct vb2_v4l2_buffer *dst_buffer; + struct list_head *temp_entry; + struct list_head *pos = NULL; + struct mtk_jpeg_src_buf *dst_done_buf, *tmp_dst_done_buf; + unsigned long flags; + + ctx = jpeg->hw_param.curr_ctx; + if (!ctx) { + dev_err(jpeg->dev, "comp_jpeg ctx fail !!!\n"); + return; + } + + dst_buffer = jpeg->hw_param.dst_buffer; + if (!dst_buffer) { + dev_err(jpeg->dev, "comp_jpeg dst_buffer fail !!!\n"); + return; + } + + dst_done_buf = container_of(dst_buffer, + struct mtk_jpeg_src_buf, b); + + spin_lock_irqsave(&ctx->done_queue_lock, flags); + list_add_tail(&dst_done_buf->list, &ctx->dst_done_queue); + while (!list_empty(&ctx->dst_done_queue) && + (pos != &ctx->dst_done_queue)) { + list_for_each_prev_safe(pos, temp_entry, &ctx->dst_done_queue) { + tmp_dst_done_buf = list_entry(pos, + struct mtk_jpeg_src_buf, + list); + if (tmp_dst_done_buf->frame_num == + ctx->last_done_frame_num) { + list_del(&tmp_dst_done_buf->list); + v4l2_m2m_buf_done(&tmp_dst_done_buf->b, + VB2_BUF_STATE_DONE); + ctx->last_done_frame_num++; + } + } + } + spin_unlock_irqrestore(&ctx->done_queue_lock, flags); +} + +static void mtk_jpegenc_timeout_work(struct work_struct *work) +{ + struct delayed_work *dly_work = to_delayed_work(work); + struct mtk_jpegenc_comp_dev *cjpeg = + container_of(dly_work, + struct mtk_jpegenc_comp_dev, + job_timeout_work); + struct mtk_jpeg_dev *master_jpeg = cjpeg->master_dev; + enum vb2_buffer_state buf_state = VB2_BUF_STATE_ERROR; + struct vb2_v4l2_buffer *src_buf, *dst_buf; + + src_buf = cjpeg->hw_param.src_buffer; + dst_buf = cjpeg->hw_param.dst_buffer; + v4l2_m2m_buf_copy_metadata(src_buf, dst_buf, true); + + mtk_jpeg_enc_reset(cjpeg->reg_base); + clk_disable_unprepare(cjpeg->venc_clk.clks->clk); + pm_runtime_put(cjpeg->dev); + cjpeg->hw_state = MTK_JPEG_HW_IDLE; + atomic_inc(&master_jpeg->enchw_rdy); + wake_up(&master_jpeg->enc_hw_wq); + v4l2_m2m_buf_done(src_buf, buf_state); + mtk_jpegenc_put_buf(cjpeg); +} + +static irqreturn_t mtk_jpegenc_hw_irq_handler(int irq, void *priv) +{ + struct vb2_v4l2_buffer *src_buf, *dst_buf; + enum vb2_buffer_state buf_state; + struct mtk_jpeg_ctx *ctx; + u32 result_size; + u32 irq_status; + + struct mtk_jpegenc_comp_dev *jpeg = priv; + struct mtk_jpeg_dev *master_jpeg = jpeg->master_dev; + + cancel_delayed_work(&jpeg->job_timeout_work); + + ctx = jpeg->hw_param.curr_ctx; + src_buf = jpeg->hw_param.src_buffer; + dst_buf = jpeg->hw_param.dst_buffer; + v4l2_m2m_buf_copy_metadata(src_buf, dst_buf, true); + + irq_status = readl(jpeg->reg_base + JPEG_ENC_INT_STS) & + JPEG_ENC_INT_STATUS_MASK_ALLIRQ; + if (irq_status) + writel(0, jpeg->reg_base + JPEG_ENC_INT_STS); + if (!(irq_status & JPEG_ENC_INT_STATUS_DONE)) + dev_warn(jpeg->dev, "Jpg Enc occurs unknown Err."); + + result_size = mtk_jpeg_enc_get_file_size(jpeg->reg_base); + vb2_set_plane_payload(&dst_buf->vb2_buf, 0, result_size); + buf_state = VB2_BUF_STATE_DONE; + v4l2_m2m_buf_done(src_buf, buf_state); + mtk_jpegenc_put_buf(jpeg); + pm_runtime_put(ctx->jpeg->dev); + clk_disable_unprepare(jpeg->venc_clk.clks->clk); + if (!list_empty(&ctx->fh.m2m_ctx->out_q_ctx.rdy_queue) || + !list_empty(&ctx->fh.m2m_ctx->cap_q_ctx.rdy_queue)) { + queue_work(master_jpeg->workqueue, &ctx->jpeg_work); + } + + jpeg->hw_state = MTK_JPEG_HW_IDLE; + wake_up(&master_jpeg->enc_hw_wq); + atomic_inc(&master_jpeg->enchw_rdy); + + return IRQ_HANDLED; +} + +static int mtk_jpegenc_hw_init_irq(struct mtk_jpegenc_comp_dev *dev) +{ + struct platform_device *pdev = dev->plat_dev; + int ret; + + dev->jpegenc_irq = platform_get_irq(pdev, 0); + if (dev->jpegenc_irq < 0) + return dev->jpegenc_irq; + + ret = devm_request_irq(&pdev->dev, + dev->jpegenc_irq, + mtk_jpegenc_hw_irq_handler, + 0, + pdev->name, dev); + if (ret) { + dev_err(&pdev->dev, "Failed to devm_request_irq %d (%d)", + dev->jpegenc_irq, ret); + return ret; + } + + return 0; +} + +static int mtk_jpegenc_hw_probe(struct platform_device *pdev) +{ + struct mtk_jpegenc_clk *jpegenc_clk; + struct mtk_jpeg_dev *master_dev; + struct mtk_jpegenc_comp_dev *dev; + int ret, i; + + struct device *decs = &pdev->dev; + + if (!decs->parent) + return -EPROBE_DEFER; + + master_dev = dev_get_drvdata(decs->parent); + if (!master_dev) + return -EPROBE_DEFER; + + dev = devm_kzalloc(&pdev->dev, sizeof(*dev), GFP_KERNEL); + if (!dev) + return -ENOMEM; + + dev->plat_dev = pdev; + dev->dev = &pdev->dev; + + if (!master_dev->is_jpgenc_multihw) { + master_dev->is_jpgenc_multihw = true; + for (i = 0; i < MTK_JPEGENC_HW_MAX; i++) + master_dev->enc_hw_dev[i] = NULL; + + init_waitqueue_head(&master_dev->enc_hw_wq); + master_dev->workqueue = alloc_ordered_workqueue(MTK_JPEG_NAME, + WQ_MEM_RECLAIM + | WQ_FREEZABLE); + if (!master_dev->workqueue) + return -EINVAL; + } + + atomic_set(&master_dev->enchw_rdy, MTK_JPEGENC_HW_MAX); + spin_lock_init(&dev->hw_lock); + dev->hw_state = MTK_JPEG_HW_IDLE; + + INIT_DELAYED_WORK(&dev->job_timeout_work, + mtk_jpegenc_timeout_work); + + jpegenc_clk = &dev->venc_clk; + + jpegenc_clk->clk_num = devm_clk_bulk_get_all(&pdev->dev, + &jpegenc_clk->clks); + if (jpegenc_clk->clk_num < 0) + return dev_err_probe(&pdev->dev, jpegenc_clk->clk_num, + "Failed to get jpegenc clock count\n"); + + dev->reg_base = devm_platform_ioremap_resource(pdev, 0); + if (IS_ERR(dev->reg_base)) + return PTR_ERR(dev->reg_base); + + ret = mtk_jpegenc_hw_init_irq(dev); + if (ret) + return ret; + + for (i = 0; i < MTK_JPEGENC_HW_MAX; i++) { + if (master_dev->enc_hw_dev[i]) + continue; + + master_dev->enc_hw_dev[i] = dev; + master_dev->reg_encbase[i] = dev->reg_base; + dev->master_dev = master_dev; + } + + platform_set_drvdata(pdev, dev); + pm_runtime_enable(&pdev->dev); + + return 0; +} + +static struct platform_driver mtk_jpegenc_hw_driver = { + .probe = mtk_jpegenc_hw_probe, + .driver = { + .name = "mtk-jpegenc-hw", + .of_match_table = of_match_ptr(mtk_jpegenc_drv_ids), + }, +}; + +module_platform_driver(mtk_jpegenc_hw_driver); + +MODULE_DESCRIPTION("MediaTek JPEG encode HW driver"); +MODULE_LICENSE("GPL"); |