[PATCH 00/13] Clean up "mediatek,larb" after adding device_link

Yong Wu
2019-01-01T04:51:03Z

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.

The ref_count of the device_link normally is over 1, when the consumer
device driver is removed, we should remove all the device_link, Hence,
I add the patch "driver core: xxx" at the beginning of this patchset.

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

Yong Wu (13):
dt-binding: mediatek: Get rid of mediatek,larb for multimedia HW
driver core: Remove the link if there is no driver with AUTO flag
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
arm: dts: mediatek: Get rid of mediatek,larb for MM nodes
arm64: dts: mediatek: Get rid of mediatek,larb for MM nodes

.../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/base/core.c | 4 +--
drivers/gpu/drm/mediatek/mtk_drm_crtc.c | 11 ------
drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.c | 26 --------------
drivers/gpu/drm/mediatek/mtk_drm_ddp_comp.h | 1 -
drivers/iommu/mtk_iommu.c | 40 +++++++++-------------
drivers/iommu/mtk_iommu_v1.c | 32 ++++++++---------
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 | 19 ----------
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 | 38 --------------------
drivers/memory/mtk-smi.c | 30 ++++------------
include/soc/mediatek/smi.h | 20 -----------
24 files changed, 40 insertions(+), 292 deletions(-)

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1.9.1