| Message ID | 20220629225331.357308-1-marijn.suijten@somainline.org |
|---|---|
| Headers | show |
| Series | drm/msm/dsi_phy: Replace parent names with clk_hw pointers | expand |
On 30/06/2022 01:53, Marijn Suijten wrote: > parent_hw pointers are easier to manage and cheaper to use than > repeatedly formatting the parent name and subsequently leaving the clk > framework to perform lookups based on that name. > > This series starts out by adding extra constructors for divider, mux and > fixed-factor clocks that have parent_hw(s) pointer argument(s) instead > of some DT index or name. Followed by individual patches performing the > conversion, one DSI PHY at a time. > > dsi_phy_28nm_8960 includes an extra fixup to replace "eternal" > devm_kzalloc allocations (for the lifetime of the device) with > stack-local char arrays, like all the other DSI PHY drivers. > > (Questions from v1 cover letter regarding the future of these drivers > is omitted for brevity.) > > And with enough future improvements out of the way, let's round out this > patch-series by stating that it has been successfully tested on: > > - Sony Nile Discovery (Xperia XA2 Ultra): 14nm; > - Sony Seine PDX201 (Xperia 10II): 14nm; > - Sony Loire Suzu (Xperia X): 28nm. > > And no diff is observed in debugfs's clk_summary. > > Unfortunately all other devices in my collection with a 7/10nm DSI PHY > have a DSC panel which we have yet to get working. > > Changes since v2: > - in fixed-factor: > - Reorder if - else if change to consume less diff; > - Go over 80-char column lint when adding new arguments to function > calls, instead of reflowing all arguments to adhere to this limit; > also consuming less diff. > > v2: https://lore.kernel.org/linux-arm-msm/20220601220747.1145095-1-marijn.suijten@somainline.org/ > > Changes since v1: > > - Moved indentation changes to separate patch (Dmitry); > - dsi_phy_28nm_8960: move clock name allocation removal prior to > parent_hw refactor; > - Remove vco_name stack-local char array in favour of reusing clk_name > (Dmitry); > - Inserted additional patch to replace hardcoded char-array length > constant 32 with sizeof(clk_name). > > v1: https://lore.kernel.org/linux-arm-msm/20220523213837.1016542-1-marijn.suijten@somainline.org/T/#u > > Marijn Suijten (11): > clk: divider: Introduce devm_clk_hw_register_divider_parent_hw() > clk: mux: Introduce devm_clk_hw_register_mux_parent_hws() > clk: fixed-factor: Introduce *clk_hw_register_fixed_factor_parent_hw() Stephen, do we stand a chance of landing patches 1-3 into 5.20? We would like to merge the series into 5.21 through the msm-next. Landing clk patches in 5.20 would save us from using immutable branches, etc. > drm/msm/dsi/phy: Reindent and reflow multiline function calls > drm/msm/dsi_phy_28nm_8960: Use stack memory for temporary clock names > drm/msm/dsi/phy: Replace hardcoded char-array length with sizeof() > drm/msm/dsi_phy_28nm_8960: Replace parent names with clk_hw pointers > drm/msm/dsi_phy_28nm: Replace parent names with clk_hw pointers > drm/msm/dsi_phy_14nm: Replace parent names with clk_hw pointers > drm/msm/dsi_phy_10nm: Replace parent names with clk_hw pointers > drm/msm/dsi_phy_7nm: Replace parent names with clk_hw pointers > > drivers/clk/clk-fixed-factor.c | 45 ++++- > drivers/gpu/drm/msm/dsi/phy/dsi_phy_10nm.c | 165 +++++++++--------- > drivers/gpu/drm/msm/dsi/phy/dsi_phy_14nm.c | 55 +++--- > drivers/gpu/drm/msm/dsi/phy/dsi_phy_28nm.c | 117 ++++++------- > .../gpu/drm/msm/dsi/phy/dsi_phy_28nm_8960.c | 90 +++++----- > drivers/gpu/drm/msm/dsi/phy/dsi_phy_7nm.c | 156 ++++++++--------- > include/linux/clk-provider.h | 34 ++++ > 7 files changed, 351 insertions(+), 311 deletions(-) >
Quoting Dmitry Baryshkov (2022-07-14 03:19:12) > On 30/06/2022 01:53, Marijn Suijten wrote: > > Marijn Suijten (11): > > clk: divider: Introduce devm_clk_hw_register_divider_parent_hw() > > clk: mux: Introduce devm_clk_hw_register_mux_parent_hws() > > clk: fixed-factor: Introduce *clk_hw_register_fixed_factor_parent_hw() > > Stephen, do we stand a chance of landing patches 1-3 into 5.20? We would > like to merge the series into 5.21 through the msm-next. Landing clk > patches in 5.20 would save us from using immutable branches, etc. > Sure I can land the first three patches now for 5.20
parent_hw pointers are easier to manage and cheaper to use than repeatedly formatting the parent name and subsequently leaving the clk framework to perform lookups based on that name. This series starts out by adding extra constructors for divider, mux and fixed-factor clocks that have parent_hw(s) pointer argument(s) instead of some DT index or name. Followed by individual patches performing the conversion, one DSI PHY at a time. dsi_phy_28nm_8960 includes an extra fixup to replace "eternal" devm_kzalloc allocations (for the lifetime of the device) with stack-local char arrays, like all the other DSI PHY drivers. (Questions from v1 cover letter regarding the future of these drivers is omitted for brevity.) And with enough future improvements out of the way, let's round out this patch-series by stating that it has been successfully tested on: - Sony Nile Discovery (Xperia XA2 Ultra): 14nm; - Sony Seine PDX201 (Xperia 10II): 14nm; - Sony Loire Suzu (Xperia X): 28nm. And no diff is observed in debugfs's clk_summary. Unfortunately all other devices in my collection with a 7/10nm DSI PHY have a DSC panel which we have yet to get working. Changes since v2: - in fixed-factor: - Reorder if - else if change to consume less diff; - Go over 80-char column lint when adding new arguments to function calls, instead of reflowing all arguments to adhere to this limit; also consuming less diff. v2: https://lore.kernel.org/linux-arm-msm/20220601220747.1145095-1-marijn.suijten@somainline.org/ Changes since v1: - Moved indentation changes to separate patch (Dmitry); - dsi_phy_28nm_8960: move clock name allocation removal prior to parent_hw refactor; - Remove vco_name stack-local char array in favour of reusing clk_name (Dmitry); - Inserted additional patch to replace hardcoded char-array length constant 32 with sizeof(clk_name). v1: https://lore.kernel.org/linux-arm-msm/20220523213837.1016542-1-marijn.suijten@somainline.org/T/#u Marijn Suijten (11): clk: divider: Introduce devm_clk_hw_register_divider_parent_hw() clk: mux: Introduce devm_clk_hw_register_mux_parent_hws() clk: fixed-factor: Introduce *clk_hw_register_fixed_factor_parent_hw() drm/msm/dsi/phy: Reindent and reflow multiline function calls drm/msm/dsi_phy_28nm_8960: Use stack memory for temporary clock names drm/msm/dsi/phy: Replace hardcoded char-array length with sizeof() drm/msm/dsi_phy_28nm_8960: Replace parent names with clk_hw pointers drm/msm/dsi_phy_28nm: Replace parent names with clk_hw pointers drm/msm/dsi_phy_14nm: Replace parent names with clk_hw pointers drm/msm/dsi_phy_10nm: Replace parent names with clk_hw pointers drm/msm/dsi_phy_7nm: Replace parent names with clk_hw pointers drivers/clk/clk-fixed-factor.c | 45 ++++- drivers/gpu/drm/msm/dsi/phy/dsi_phy_10nm.c | 165 +++++++++--------- drivers/gpu/drm/msm/dsi/phy/dsi_phy_14nm.c | 55 +++--- drivers/gpu/drm/msm/dsi/phy/dsi_phy_28nm.c | 117 ++++++------- .../gpu/drm/msm/dsi/phy/dsi_phy_28nm_8960.c | 90 +++++----- drivers/gpu/drm/msm/dsi/phy/dsi_phy_7nm.c | 156 ++++++++--------- include/linux/clk-provider.h | 34 ++++ 7 files changed, 351 insertions(+), 311 deletions(-)