i3c: mipi-i3c-hci: Add optional System Suspend support

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Add system suspend callbacks.  Implement them by forcing runtime PM.
Consequently bail out if Runtime PM is not allowed.

On resume from System Suspend (suspend to RAM), rerun Dynamic Address
Assignment to restore addresses for devices that may have lost power.

On resume from System Hibernation (suspend to disk), use the new
i3c_master_do_daa_ext() helper with 'rstdaa' set to true, which
additionally handles the case where devices are assigned different dynamic
addresses after a hibernation boot.

Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Reviewed-by: Frank Li <Frank.Li@nxp.com>
Link: https://patch.msgid.link/20260123063325.8210-3-adrian.hunter@intel.com
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>

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Adrian Hunter 2026-01-23 08:33:24 +02:00 • committed by Alexandre Belloni

parent c481ef12e7

commit c3357bdd9b

1 changed files with 49 additions and 0 deletions

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drivers/i3c/master/mipi-i3c-hci/core.c

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