Background:
This capability is targeted at deeply embedded appliance like devices
that make use of Intel integrated graphics. There are a few use cases
that are not currently supported by the i915 driver. For example,
they may not be running userspace code that is capable of querying and
setting the various DRM properties and would like them set during the
driver initialization. Also they may be using a custom firmware bootloader
that does not include any graphics initialization or VBT information.
This level of initialization configuration has been available in
the Intel EMGD kernel driver and a similar level of configurability will
be expected as designs transition to the i915 driver.
This patch set provides a framework that makes use of ACPI property
tables containing configuration information. It also includes some
examples on how this may be applied to various aspects of the i915
driver initialization.
Series description:
Patch 1 creates the initial framework. It looks up a specific ACPI
property table and builds lists containing the configuration found
in that table. It includes functions that can make use of that
configuration information.
Patch 2 adds a function to i915 that provides a unique name for
each output. We previously had something similar to this in the
driver for debug output, it was not be used and removed recently.
Patch 3 is the first example usage. We check the configuration for
a CRTC bits-per-pixel value and use that if EDID does not provide
this.
Patch 4 is an example of using the configuration to specify a
default value for the DP panel fitter property.
Patch 5 is an example of using the configuration to specify default
values for a couple of common connector properties.
Patch 6 modifies the framework slightly to better support the
remaining examples.
Patch 7 adds a function to the framework that looks for a
workaround section. If found, it builds a list of workarounds that
can be used in place of of the workarounds hardcoded in the driver.
Patch 8 changes the workaround initialization code to make use
of the workaround list from the configuration instead of the
built-in workaround list.
Patch 9 adds functions to the frame work that look for a VBT
section and parse that information into the driver's VBT structures.
Patch 10 adds an example/test ACPI property table and adds code to
the frame to build this table into the driver. This is mainly for
testing the framework, but may also be useful for truly embedded
devices as a way to embed the configuration.
Patch 11 adds an example workaround section to the test ACPI property
table.
Patch 12 add an example VBT section to the test ACPI property table.
Bob Paauwe (12):
drm/i915/config: Initial framework
drm/i915/config: Introduce intel_output_name
drm/i915/config: Add init-time configuration of bits per color.
drm/i915/config: Set dp panel fitter property based on init-time
config.
drm/i915/config: Set general connector properties using config.
drm/i915/config: Split out allocation of list nodes.
drm/i915/config: Get workaround information from configuration.
drm/i915/config: Use workarounds list from configuration.
drm/i915/config: Add VBT settings configuration.
drm/i915/config: Introduce a test table and code to make use of it.
drm/i915/config: Add workaround properties to ACPI table.
drm/i915/config: Add ACPI device examples for VBT configuration.
drivers/gpu/drm/i915/Makefile | 3 +-
drivers/gpu/drm/i915/i915-properties.asl | 340 ++++++++++
drivers/gpu/drm/i915/i915-properties.hex | 409 ++++++++++++
drivers/gpu/drm/i915/i915_dma.c | 6 +
drivers/gpu/drm/i915/i915_drv.h | 18 +
drivers/gpu/drm/i915/i915_params.c | 6 +
drivers/gpu/drm/i915/intel_config.c | 1002 ++++++++++++++++++++++++++++++
drivers/gpu/drm/i915/intel_display.c | 71 +++
drivers/gpu/drm/i915/intel_dp.c | 8 +-
drivers/gpu/drm/i915/intel_drv.h | 33 +
drivers/gpu/drm/i915/intel_modes.c | 8 +-
drivers/gpu/drm/i915/intel_ringbuffer.c | 19 +-
12 files changed, 1909 insertions(+), 14 deletions(-)
create mode 100644 drivers/gpu/drm/i915/i915-properties.asl
create mode 100644 drivers/gpu/drm/i915/i915-properties.hex
create mode 100644 drivers/gpu/drm/i915/intel_config.c
--
2.1.0