| Message ID | 20240503151129.3901815-1-l.stach@pengutronix.de (mailing list archive) |
|---|---|
| Headers | show |
| Series | improve Analogix DP AUX channel handling | expand |
On Fri, May 3, 2024 at 5:12 PM Lucas Stach <l.stach@pengutronix.de> wrote: > > Currently the AUX channel support in the Analogix DP driver is severely > limited as the AUX block of the bridge is only initialized when the video > link is to be enabled. This is okay for the purposes of link training, > but does not allow to detect displays by probing for EDID. This series > reworks the driver to allow AUX transactions before the video link is > active. > > As this requires to rework some of the controller initialization and > also handling of both internal and external clocks, the series includes > quite a few changes to add better runtime PM handling. > > Lucas Stach (14): > drm/bridge: analogix_dp: remove unused platform power_on_end callback > drm/rockchip: analogix_dp: add runtime PM handling > drm/bridge: analogix_dp: register AUX bus after enabling runtime PM > drm/bridge: analogix_dp: handle clock via runtime PM > drm/bridge: analogix_dp: remove unused analogix_dp_remove > drm/bridge: analogix_dp: remove clk handling from > analogix_dp_set_bridge > drm/bridge: analogix_dp: move platform and PHY power handling into > runtime PM > drm/bridge: analogix_dp: move basic controller init into runtime PM > drm/bridge: analogix_dp: remove PLL lock check from > analogix_dp_config_video > drm/bridge: analogix_dp: move macro reset after link bandwidth setting > drm/bridge: analogix_dp: don't wait for PLL lock too early > drm/bridge: analogix_dp: simplify and correct PLL lock checks > drm/bridge: analogix_dp: only read AUX status when an error occured > drm/bridge: analogix_dp: handle AUX transfer timeouts > > .../drm/bridge/analogix/analogix_dp_core.c | 196 ++++++++---------- > .../drm/bridge/analogix/analogix_dp_core.h | 7 +- > .../gpu/drm/bridge/analogix/analogix_dp_reg.c | 38 ++-- > .../gpu/drm/bridge/analogix/analogix_dp_reg.h | 9 + > drivers/gpu/drm/exynos/exynos_dp.c | 5 +- > .../gpu/drm/rockchip/analogix_dp-rockchip.c | 26 +-- > include/drm/bridge/analogix_dp.h | 4 +- > 7 files changed, 120 insertions(+), 165 deletions(-) > > -- > 2.39.2 > There are some checkpatch --strict warnings, and the patch 10/14 does not apply. Other than that the series looks very good. Maybe rebase on drm-misc/drm-misc-next, fix the applicable checkpatch --strict warnings and send a new version of this series. Then the last patches can be reviewed.
Hi Robert, Am Dienstag, dem 07.05.2024 um 15:10 +0200 schrieb Robert Foss: > On Fri, May 3, 2024 at 5:12 PM Lucas Stach <l.stach@pengutronix.de> wrote: > > > > Currently the AUX channel support in the Analogix DP driver is severely > > limited as the AUX block of the bridge is only initialized when the video > > link is to be enabled. This is okay for the purposes of link training, > > but does not allow to detect displays by probing for EDID. This series > > reworks the driver to allow AUX transactions before the video link is > > active. > > > > As this requires to rework some of the controller initialization and > > also handling of both internal and external clocks, the series includes > > quite a few changes to add better runtime PM handling. > > > > Lucas Stach (14): > > drm/bridge: analogix_dp: remove unused platform power_on_end callback > > drm/rockchip: analogix_dp: add runtime PM handling > > drm/bridge: analogix_dp: register AUX bus after enabling runtime PM > > drm/bridge: analogix_dp: handle clock via runtime PM > > drm/bridge: analogix_dp: remove unused analogix_dp_remove > > drm/bridge: analogix_dp: remove clk handling from > > analogix_dp_set_bridge > > drm/bridge: analogix_dp: move platform and PHY power handling into > > runtime PM > > drm/bridge: analogix_dp: move basic controller init into runtime PM > > drm/bridge: analogix_dp: remove PLL lock check from > > analogix_dp_config_video > > drm/bridge: analogix_dp: move macro reset after link bandwidth setting > > drm/bridge: analogix_dp: don't wait for PLL lock too early > > drm/bridge: analogix_dp: simplify and correct PLL lock checks > > drm/bridge: analogix_dp: only read AUX status when an error occured > > drm/bridge: analogix_dp: handle AUX transfer timeouts > > > > .../drm/bridge/analogix/analogix_dp_core.c | 196 ++++++++---------- > > .../drm/bridge/analogix/analogix_dp_core.h | 7 +- > > .../gpu/drm/bridge/analogix/analogix_dp_reg.c | 38 ++-- > > .../gpu/drm/bridge/analogix/analogix_dp_reg.h | 9 + > > drivers/gpu/drm/exynos/exynos_dp.c | 5 +- > > .../gpu/drm/rockchip/analogix_dp-rockchip.c | 26 +-- > > include/drm/bridge/analogix_dp.h | 4 +- > > 7 files changed, 120 insertions(+), 165 deletions(-) > > > > -- > > 2.39.2 > > > > There are some checkpatch --strict warnings, and the patch 10/14 does > not apply. Other than that the series looks very good. > > Maybe rebase on drm-misc/drm-misc-next, fix the applicable checkpatch > --strict warnings and send a new version of this series. Then the last > patches can be reviewed. Thanks for the review so far. Patch 10/14 probably doesn't apply, as I based the series on some patches I sent earlier [1]. Maybe you are also willing to take a look at those, so I could squash them into a single series for the resend? Regards, Lucas [1] https://lore.kernel.org/dri-devel/20240318203925.2837689-1-l.stach@pengutronix.de/
Am Freitag, 3. Mai 2024, 17:11:15 CEST schrieb Lucas Stach: > Currently the AUX channel support in the Analogix DP driver is severely > limited as the AUX block of the bridge is only initialized when the video > link is to be enabled. This is okay for the purposes of link training, > but does not allow to detect displays by probing for EDID. This series > reworks the driver to allow AUX transactions before the video link is > active. > > As this requires to rework some of the controller initialization and > also handling of both internal and external clocks, the series includes > quite a few changes to add better runtime PM handling. > > Lucas Stach (14): > drm/bridge: analogix_dp: remove unused platform power_on_end callback > drm/rockchip: analogix_dp: add runtime PM handling > drm/bridge: analogix_dp: register AUX bus after enabling runtime PM > drm/bridge: analogix_dp: handle clock via runtime PM > drm/bridge: analogix_dp: remove unused analogix_dp_remove > drm/bridge: analogix_dp: remove clk handling from > analogix_dp_set_bridge > drm/bridge: analogix_dp: move platform and PHY power handling into > runtime PM > drm/bridge: analogix_dp: move basic controller init into runtime PM > drm/bridge: analogix_dp: remove PLL lock check from > analogix_dp_config_video > drm/bridge: analogix_dp: move macro reset after link bandwidth setting > drm/bridge: analogix_dp: don't wait for PLL lock too early > drm/bridge: analogix_dp: simplify and correct PLL lock checks > drm/bridge: analogix_dp: only read AUX status when an error occured > drm/bridge: analogix_dp: handle AUX transfer timeouts my knowledge of Analgix-dp internals is limited, but at least both rk3288-veyron and rk3399 gru still had working displays with this series applied and both device classes using the analogix-dp for their main display. So on rk3288-veyron and rk3399-gru Tested-by: Heiko Stuebner <heiko@sntech.de>
Currently the AUX channel support in the Analogix DP driver is severely limited as the AUX block of the bridge is only initialized when the video link is to be enabled. This is okay for the purposes of link training, but does not allow to detect displays by probing for EDID. This series reworks the driver to allow AUX transactions before the video link is active. As this requires to rework some of the controller initialization and also handling of both internal and external clocks, the series includes quite a few changes to add better runtime PM handling. Lucas Stach (14): drm/bridge: analogix_dp: remove unused platform power_on_end callback drm/rockchip: analogix_dp: add runtime PM handling drm/bridge: analogix_dp: register AUX bus after enabling runtime PM drm/bridge: analogix_dp: handle clock via runtime PM drm/bridge: analogix_dp: remove unused analogix_dp_remove drm/bridge: analogix_dp: remove clk handling from analogix_dp_set_bridge drm/bridge: analogix_dp: move platform and PHY power handling into runtime PM drm/bridge: analogix_dp: move basic controller init into runtime PM drm/bridge: analogix_dp: remove PLL lock check from analogix_dp_config_video drm/bridge: analogix_dp: move macro reset after link bandwidth setting drm/bridge: analogix_dp: don't wait for PLL lock too early drm/bridge: analogix_dp: simplify and correct PLL lock checks drm/bridge: analogix_dp: only read AUX status when an error occured drm/bridge: analogix_dp: handle AUX transfer timeouts .../drm/bridge/analogix/analogix_dp_core.c | 196 ++++++++---------- .../drm/bridge/analogix/analogix_dp_core.h | 7 +- .../gpu/drm/bridge/analogix/analogix_dp_reg.c | 38 ++-- .../gpu/drm/bridge/analogix/analogix_dp_reg.h | 9 + drivers/gpu/drm/exynos/exynos_dp.c | 5 +- .../gpu/drm/rockchip/analogix_dp-rockchip.c | 26 +-- include/drm/bridge/analogix_dp.h | 4 +- 7 files changed, 120 insertions(+), 165 deletions(-)