[PATCH v3 00/14] Clean up "mediatek,larb" after adding device_link

Yong Wu
2019-09-03T09:38:03Z

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(-)