linux-dev/drivers/usb/typec/altmodes, branch master

usb: typec: altmodes/displayport: correct pin assignment for UFP receptacles

2022-08-18T19:20:07Z

Fix incorrect pin assignment values when connecting to a monitor with Type-C receptacle instead of a plug. According to specification, an UFP_D receptacle's pin assignment should came from the UFP_D pin assignments field (bit 23:16), while an UFP_D plug's assignments are described in the DFP_D pin assignments (bit 15:8) during Mode Discovery. For example the LG 27 UL850-W is a monitor with Type-C receptacle. The monitor responds to MODE DISCOVERY command with following DisplayPort Capability flag: dp->alt->vdo=0x140045 The existing logic only take cares of UPF_D plug case, and would take the bit 15:8 for this 0x140045 case. This results in an non-existing pin assignment 0x0 in dp_altmode_configure. To fix this problem a new set of macros are introduced to take plug/receptacle differences into consideration. Fixes: 0e3bb7d6894d ("usb: typec: Add driver for DisplayPort alternate mode") Cc: stable@vger.kernel.org Co-developed-by: Pablo Sun Co-developed-by: Macpaul Lin Reviewed-by: Guillaume Ranquet Reviewed-by: Heikki Krogerus Signed-off-by: Pablo Sun Signed-off-by: Macpaul Lin Link: https://lore.kernel.org/r/20220804034803.19486-1-macpaul.lin@mediatek.com Signed-off-by: Greg Kroah-Hartman

usb: typec: altmodes/displayport: Notify drm subsys of hotplug events

2021-08-20T10:35:59Z

Use the new drm_connector_oob_hotplug_event() functions to let drm/kms drivers know about DisplayPort over Type-C hotplug events. Reviewed-by: Heikki Krogerus Tested-by: Heikki Krogerus Signed-off-by: Hans de Goede Reviewed-by: Greg Kroah-Hartman Reviewed-by: Lyude Paul Link: https://lore.kernel.org/r/20210817215201.795062-9-hdegoede@redhat.com

usb: typec: altmodes/displayport: Make dp_altmode_notify() more generic

2021-08-20T10:35:59Z

Make dp_altmode_notify() handle the dp->data.conf == 0 case too, rather then having separate code-paths for this in various places which call it. Reviewed-by: Heikki Krogerus Tested-by: Heikki Krogerus Signed-off-by: Hans de Goede Reviewed-by: Greg Kroah-Hartman Reviewed-by: Lyude Paul Link: https://lore.kernel.org/r/20210817215201.795062-8-hdegoede@redhat.com

usb: typec: displayport: Fill the negotiated SVDM Version in the header

2021-02-09T10:48:55Z

VDM header now requires SVDM Version. Get it from typec_partner. Acked-by: Heikki Krogerus Signed-off-by: Kyle Tso Link: https://lore.kernel.org/r/20210205033415.3320439-6-kyletso@google.com Signed-off-by: Greg Kroah-Hartman

usb: pd: Make SVDM Version configurable in VDM header

2021-02-09T10:48:54Z

PD Rev 3.0 introduces SVDM Version 2.0. This patch makes the field configuable in the header in order to be able to be compatible with older SVDM version. Acked-by: Heikki Krogerus Signed-off-by: Kyle Tso Link: https://lore.kernel.org/r/20210205033415.3320439-3-kyletso@google.com Signed-off-by: Greg Kroah-Hartman

usb: typec: Fix copy paste error for NVIDIA alt-mode description

2021-01-07T13:19:12Z

The name of the module for the NVIDIA alt-mode is incorrect as it looks to be a copy-paste error from the entry above, update it to the correct typec_nvidia module name. Cc: Ajay Gupta Cc: Heikki Krogerus Signed-off-by: Peter Robinson Link: https://lore.kernel.org/r/20210106001605.167917-1-pbrobinson@gmail.com Signed-off-by: Greg Kroah-Hartman

usb: typec: displayport: Reduce noise from the driver

2020-10-02T09:30:10Z

It's not an error if the mode can't be entered because another mode is already active, so no longer printing an error message if that happens. Signed-off-by: Heikki Krogerus Link: https://lore.kernel.org/r/20200928133324.48841-1-heikki.krogerus@linux.intel.com Signed-off-by: Greg Kroah-Hartman

usb: typec: altmodes: displayport: Supply missing displayport.h include file

2020-07-09T14:46:59Z

If the header file containing a function's prototype isn't included by the sourcefile containing the associated function, the build system complains of missing prototypes. Fixes the following W=1 kernel build warning(s): drivers/usb/typec/altmodes/displayport.c:511:5: warning: no previous prototype for ‘dp_altmode_probe’ [-Wmissing-prototypes] drivers/usb/typec/altmodes/displayport.c:551:6: warning: no previous prototype for ‘dp_altmode_remove’ [-Wmissing-prototypes] Cc: Heikki Krogerus Signed-off-by: Lee Jones Link: https://lore.kernel.org/r/20200703174148.2749969-22-lee.jones@linaro.org Signed-off-by: Greg Kroah-Hartman

usb: typec: altmodes: displayport: File headers are not good candidates for kerneldoc

2020-07-09T14:46:59Z

Demote displayport's file header to a standard comment block. Fixes the following W=1 kernel build warning(s): drivers/usb/typec/altmodes/displayport.c:18: warning: Function parameter or member '_dp' not described in 'DP_HEADER' drivers/usb/typec/altmodes/displayport.c:18: warning: Function parameter or member 'cmd' not described in 'DP_HEADER' Cc: Heikki Krogerus Signed-off-by: Lee Jones Link: https://lore.kernel.org/r/20200703174148.2749969-21-lee.jones@linaro.org Signed-off-by: Greg Kroah-Hartman

usb: typec: Add parameter for the VDO to typec_altmode_enter()

2020-01-09T09:48:19Z

Enter Mode Command may contain one VDO. Signed-off-by: Heikki Krogerus Link: https://lore.kernel.org/r/20191230142611.24921-3-heikki.krogerus@linux.intel.com Signed-off-by: Greg Kroah-Hartman