This is an RFC attempt to restructure MSM DSI PHY drivers. What started as an attempt to grok the overcomplicated PHY drivers, has lead up to the idea of merging PHY and PLL code, reducing abstractions, code duplication, dropping dead code, etc.
The patches were mainly tested on RB5 (sm8250, 7nm) and lightly tested on RB3 (sdm845, 10nm), DB410c (apq8016, 28nm-lp).
The following changes since commit fe07bfda2fb9cdef8a4d4008a409bb02f35f1bd8:
Linux 5.12-rc1 (2021-02-28 16:05:19 -0800)
are available in the Git repository at:
ssh://git@git.linaro.org/people/dmitry.baryshkov/kernel.git dsi-phy-rfc
for you to fetch changes up to 819a9071587f1acba14a6780f422d78fdb55d671:
arm64: dts: qcom: sdm845: assign DSI clock source parents (2021-03-02 02:23:14 +0300)
---------------------------------------------------------------- Dmitry Baryshkov (24): drm/msm/dsi: fuse dsi_pll_* code into dsi_phy_* code drm/msm/dsi: drop multiple pll enable_seq support drm/msm/dsi: move all PLL callbacks into PHY config struct drm/msm/dsi: move min/max PLL rate to phy config drm/msm/dsi: remove msm_dsi_pll_set_usecase drm/msm/dsi: stop setting clock parents manually arm64: dts: qcom: sm8250: assign DSI clock source parents drm/msm/dsi: push provided clocks handling into a generic code clk: mux: provide devm_clk_hw_register_mux() clk: divider: add devm_clk_hw_register_divider drm/msm/dsi: use devm_clk_*register to registe DSI PHY clocks drm/msm/dsi: use devm_of_clk_add_hw_provider drm/msm/dsi: replace PHY's init callback with configurable data drm/msm/dsi: make save/restore_state phy-level functions drm/msm/dsi: limit vco_delay to 28nm PHY drm/msi/dsi: inline msm_dsi_pll_helper_clk_prepare/unprepare drm/msm/dsi: make save_state/restore_state callbacks accept msm_dsi_phy drm/msm/dsi: drop msm_dsi_pll abstracton drm/msm/dsi: drop PLL accessor functions drm/msm/dsi: move ioremaps to dsi_phy_driver_probe drm/msm/dsi: remove duplicate fields from dsi_pll_Nnm instances drm/msm/dsi: remove temp data from global pll structure drm/msm/dsi: drop global msm_dsi_phy_type enumaration arm64: dts: qcom: sdm845: assign DSI clock source parents
arch/arm64/boot/dts/qcom/sdm845.dtsi | 6 + arch/arm64/boot/dts/qcom/sm8250.dtsi | 6 + drivers/clk/clk-mux.c | 35 + drivers/gpu/drm/msm/Kconfig | 8 - drivers/gpu/drm/msm/Makefile | 9 - drivers/gpu/drm/msm/dsi/dsi.h | 56 +- drivers/gpu/drm/msm/dsi/dsi_host.c | 51 -- drivers/gpu/drm/msm/dsi/dsi_manager.c | 18 +- drivers/gpu/drm/msm/dsi/phy/dsi_phy.c | 129 +-- drivers/gpu/drm/msm/dsi/phy/dsi_phy.h | 31 +- drivers/gpu/drm/msm/dsi/phy/dsi_phy_10nm.c | 741 ++++++++++++++- drivers/gpu/drm/msm/dsi/phy/dsi_phy_14nm.c | 925 ++++++++++++++++++- drivers/gpu/drm/msm/dsi/phy/dsi_phy_20nm.c | 3 +- drivers/gpu/drm/msm/dsi/phy/dsi_phy_28nm.c | 662 +++++++++++++- drivers/gpu/drm/msm/dsi/phy/dsi_phy_28nm_8960.c | 476 +++++++++- drivers/gpu/drm/msm/dsi/phy/dsi_phy_7nm.c | 769 +++++++++++++++- drivers/gpu/drm/msm/dsi/pll/dsi_pll.c | 184 ---- drivers/gpu/drm/msm/dsi/pll/dsi_pll.h | 130 --- drivers/gpu/drm/msm/dsi/pll/dsi_pll_10nm.c | 881 ------------------ drivers/gpu/drm/msm/dsi/pll/dsi_pll_14nm.c | 1096 ----------------------- drivers/gpu/drm/msm/dsi/pll/dsi_pll_28nm.c | 643 ------------- drivers/gpu/drm/msm/dsi/pll/dsi_pll_28nm_8960.c | 526 ----------- drivers/gpu/drm/msm/dsi/pll/dsi_pll_7nm.c | 912 ------------------- include/linux/clk-provider.h | 30 + 24 files changed, 3678 insertions(+), 4649 deletions(-) delete mode 100644 drivers/gpu/drm/msm/dsi/pll/dsi_pll.c delete mode 100644 drivers/gpu/drm/msm/dsi/pll/dsi_pll.h delete mode 100644 drivers/gpu/drm/msm/dsi/pll/dsi_pll_10nm.c delete mode 100644 drivers/gpu/drm/msm/dsi/pll/dsi_pll_14nm.c delete mode 100644 drivers/gpu/drm/msm/dsi/pll/dsi_pll_28nm.c delete mode 100644 drivers/gpu/drm/msm/dsi/pll/dsi_pll_28nm_8960.c delete mode 100644 drivers/gpu/drm/msm/dsi/pll/dsi_pll_7nm.c