On 10/06/2019 14:55, Yong Wu wrote:
> MediaTek IOMMU has already added device_link between the consumer
> and smi-larb device. If the jpg device call the pm_runtime_get_sync,
> the smi-larb's pm_runtime_get_sync also be called automatically.
Please help me out find this relation. I seem to miss something basic, because I
can't find any between the jpeg IP and the iommu.
Regards,
Matthias
>
> CC: Rick Chang <rick.chang@xxxxxxxxxxxx>
> Signed-off-by: Yong Wu <yong.wu@xxxxxxxxxxxx>
> Reviewed-by: Evan Green <evgreen@xxxxxxxxxxxx>
> ---
> drivers/media/platform/mtk-jpeg/mtk_jpeg_core.c | 22 ----------------------
> drivers/media/platform/mtk-jpeg/mtk_jpeg_core.h | 2 --
> 2 files changed, 24 deletions(-)
>
> diff --git a/drivers/media/platform/mtk-jpeg/mtk_jpeg_core.c b/drivers/media/platform/mtk-jpeg/mtk_jpeg_core.c
> index f761e4d..2f37538 100644
> --- a/drivers/media/platform/mtk-jpeg/mtk_jpeg_core.c
> +++ b/drivers/media/platform/mtk-jpeg/mtk_jpeg_core.c
> @@ -29,7 +29,6 @@
> #include <media/v4l2-ioctl.h>
> #include <media/videobuf2-core.h>
> #include <media/videobuf2-dma-contig.h>
> -#include <soc/mediatek/smi.h>
>
> #include "mtk_jpeg_hw.h"
> #include "mtk_jpeg_core.h"
> @@ -901,11 +900,6 @@ static int mtk_jpeg_queue_init(void *priv, struct vb2_queue *src_vq,
>
> static void mtk_jpeg_clk_on(struct mtk_jpeg_dev *jpeg)
> {
> - int ret;
> -
> - ret = mtk_smi_larb_get(jpeg->larb);
> - if (ret)
> - dev_err(jpeg->dev, "mtk_smi_larb_get larbvdec fail %d\n", ret);
> clk_prepare_enable(jpeg->clk_jdec_smi);
> clk_prepare_enable(jpeg->clk_jdec);
> }
> @@ -914,7 +908,6 @@ static void mtk_jpeg_clk_off(struct mtk_jpeg_dev *jpeg)
> {
> clk_disable_unprepare(jpeg->clk_jdec);
> clk_disable_unprepare(jpeg->clk_jdec_smi);
> - mtk_smi_larb_put(jpeg->larb);
> }
>
> static irqreturn_t mtk_jpeg_dec_irq(int irq, void *priv)
> @@ -1059,21 +1052,6 @@ static int mtk_jpeg_release(struct file *file)
>
> static int mtk_jpeg_clk_init(struct mtk_jpeg_dev *jpeg)
> {
> - struct device_node *node;
> - struct platform_device *pdev;
> -
> - node = of_parse_phandle(jpeg->dev->of_node, "mediatek,larb", 0);
> - if (!node)
> - return -EINVAL;
> - pdev = of_find_device_by_node(node);
> - if (WARN_ON(!pdev)) {
> - of_node_put(node);
> - return -EINVAL;
> - }
> - of_node_put(node);
> -
> - jpeg->larb = &pdev->dev;
> -
> jpeg->clk_jdec = devm_clk_get(jpeg->dev, "jpgdec");
> if (IS_ERR(jpeg->clk_jdec))
> return PTR_ERR(jpeg->clk_jdec);
> diff --git a/drivers/media/platform/mtk-jpeg/mtk_jpeg_core.h b/drivers/media/platform/mtk-jpeg/mtk_jpeg_core.h
> index 1a6cdfd..e35fb79 100644
> --- a/drivers/media/platform/mtk-jpeg/mtk_jpeg_core.h
> +++ b/drivers/media/platform/mtk-jpeg/mtk_jpeg_core.h
> @@ -55,7 +55,6 @@ enum mtk_jpeg_ctx_state {
> * @dec_reg_base: JPEG registers mapping
> * @clk_jdec: JPEG hw working clock
> * @clk_jdec_smi: JPEG SMI bus clock
> - * @larb: SMI device
> */
> struct mtk_jpeg_dev {
> struct mutex lock;
> @@ -69,7 +68,6 @@ struct mtk_jpeg_dev {
> void __iomem *dec_reg_base;
> struct clk *clk_jdec;
> struct clk *clk_jdec_smi;
> - struct device *larb;
> };
>
> /**
>
