MediaTek IOMMU block diagram always like below:

        M4U
         |
    smi-common
         |
  -------------
  |         |  ...
  |         |
larb1     larb2
  |         |
vdec       venc

All the consumer connect with smi-larb, then connect with smi-common.

MediaTek IOMMU don't have its power-domain. When the consumer works,
it should enable the smi-larb's power which also need enable the smi-common's
power firstly.

Thus, Firstly, use the device link connect the consumer and the
smi-larbs. then add device link between the smi-larb and smi-common.

After adding the device_link, then "mediatek,larb" property can be removed.
the iommu consumer don't need call the mtk_smi_larb_get/put to enable
the power and clock of smi-larb and smi-common.

This patchset depends on "MT8183 IOMMU SUPPORT"[1].

[1] http://lists.infradead.org/pipermail/linux-mediatek/2019-August/022611.html

Change notes:
v3: 1) rebase on v5.3-rc1 and the latest mt8183 patchset.
    2) Use device_is_bound to check whether the driver is ready from Matthias.  
  
    3) Add DL_FLAG_STATELESS flag when calling device_link_add and explain the
   reason in the commit message[3/14].
    4) Add a display patch[12/14] into this series. otherwise it may affect
   display HW fastlogo even though it don't happen in mt8183.
   
v2: http://lists.infradead.org/pipermail/linux-mediatek/2019-June/020440.html
   1) rebase on v5.2-rc1.
   2) Move adding device_link between the consumer and smi-larb into
iommu_add_device from Robin.
   3) add DL_FLAG_AUTOREMOVE_CONSUMER even though the smi is built-in from Evan.
   4) Remove the shutdown callback in iommu.   

v1: https://lists.linuxfoundation.org/pipermail/iommu/2019-January/032387.html

Yong Wu (13):
  dt-binding: mediatek: Get rid of mediatek,larb for multimedia HW
  iommu/mediatek: Add probe_defer for smi-larb
  iommu/mediatek: Add device_link between the consumer and the larb
    devices
  memory: mtk-smi: Add device-link between smi-larb and smi-common
  media: mtk-jpeg: Get rid of mtk_smi_larb_get/put
  media: mtk-mdp: Get rid of mtk_smi_larb_get/put
  media: mtk-vcodec: Get rid of mtk_smi_larb_get/put
  drm/mediatek: Get rid of mtk_smi_larb_get/put
  memory: mtk-smi: Get rid of mtk_smi_larb_get/put
  iommu/mediatek: Use builtin_platform_driver
  memory: mtk-smi: Use device_is_bound to check if smi-common is ready
  arm: dts: mediatek: Get rid of mediatek,larb for MM nodes
  arm64: dts: mediatek: Get rid of mediatek,larb for MM nodes

Yongqiang Niu (1):
  drm/mediatek: Add pm runtime support for ovl and rdma

 .../bindings/display/mediatek/mediatek,disp.txt    |  9 ----
 .../bindings/media/mediatek-jpeg-decoder.txt       |  4 --
 .../devicetree/bindings/media/mediatek-mdp.txt     |  8 ----
 .../devicetree/bindings/media/mediatek-vcodec.txt  |  4 --
 arch/arm/boot/dts/mt2701.dtsi                      |  1 -
 arch/arm/boot/dts/mt7623.dtsi                      |  1 -
 arch/arm64/boot/dts/mediatek/mt8173.dtsi           | 15 ------
 drivers/gpu/drm/mediatek/mtk_disp_ovl.c            |  5 ++
 drivers/gpu/drm/mediatek/mtk_disp_rdma.c           |  5 ++
 drivers/gpu/drm/mediatek/mtk_drm_crtc.c            | 20 ++++----
 drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.c        | 31 ++----------
 drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.h        |  2 +-
 drivers/iommu/mtk_iommu.c                          | 56 ++++++++++------------
 drivers/iommu/mtk_iommu_v1.c                       | 49 ++++++++++---------
 drivers/media/platform/mtk-jpeg/mtk_jpeg_core.c    | 22 ---------
 drivers/media/platform/mtk-jpeg/mtk_jpeg_core.h    |  2 -
 drivers/media/platform/mtk-mdp/mtk_mdp_comp.c      | 38 ---------------
 drivers/media/platform/mtk-mdp/mtk_mdp_comp.h      |  2 -
 drivers/media/platform/mtk-mdp/mtk_mdp_core.c      |  1 -
 .../media/platform/mtk-vcodec/mtk_vcodec_dec_pm.c  | 22 ---------
 drivers/media/platform/mtk-vcodec/mtk_vcodec_drv.h |  3 --
 drivers/media/platform/mtk-vcodec/mtk_vcodec_enc.c |  1 -
 .../media/platform/mtk-vcodec/mtk_vcodec_enc_pm.c  | 47 ------------------
 drivers/memory/mtk-smi.c                           | 41 +++++++---------
 include/soc/mediatek/smi.h                         | 20 --------
 25 files changed, 93 insertions(+), 316 deletions(-)

-- 
1.9.1 

_______________________________________________
iommu mailing list
iommu@lists.linux-foundation.org
https://lists.linuxfoundation.org/mailman/listinfo/iommu

Reply via email to