media: ipu3-cio2: Defer probing until the PMIC is fully setup

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On devices where things are not fully describe in devicetree (1)
and where the code thus falls back to calling cio2_bridge_init(),
the i2c-clients for any VCMs also need to be instantiated manually.

The VCM can be probed by its driver as soon as the code instantiates
the i2c-client and this probing must not happen before the PMIC is
fully setup.

Make cio2_bridge_init() return -EPROBE_DEFER when the PMIC is not
fully-setup, deferring the probe of the ipu3-cio2 driver.

This is a preparation patch for adding VCM enumeration support to
the ipu3-cio2-bridge code.

1) Through embedding of devicetree info in the ACPI tables

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>

...

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Hans de Goede 2021-12-03 11:28:55 +01:00 • committed by Mauro Carvalho Chehab

parent 86790a4fdf

commit ae971ccae9

1 changed files with 37 additions and 0 deletions

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drivers/media/pci/intel/ipu3/cio2-bridge.c

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