Performance oriented customized Linux kernel based on the mainline kernel.
86b62e5cd8
lpss_iosf_enter_d3_state() checks if all hw-blocks using the DMA controllers are in d3 before powering down the DMA controllers. But on devices, where the I2C bus connected to the PMIC is shared by the PUNIT, the controller for that bus will never reach d3 since it has an effectively empty _PS3 method. Instead it appears to automatically power-down during S0i3 and we never see it as being in d3. This causes the DMA controllers to never be powered-down on these devices, causing them to never reach S0i3. This commit uses the ACPI _SEM method to detect if an I2C bus is shared with the PUNIT and if it is, it removes it from the mask of devices which lpss_iosf_enter_d3_state() checks for. This fixes these devices never reaching any S0ix states. Signed-off-by: Hans de Goede <hdegoede@redhat.com> Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> |
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| arch | ||
| block | ||
| certs | ||
| crypto | ||
| Documentation | ||
| drivers | ||
| firmware | ||
| fs | ||
| include | ||
| init | ||
| ipc | ||
| kernel | ||
| lib | ||
| LICENSES | ||
| mm | ||
| net | ||
| samples | ||
| scripts | ||
| security | ||
| sound | ||
| tools | ||
| usr | ||
| virt | ||
| .clang-format | ||
| .cocciconfig | ||
| .get_maintainer.ignore | ||
| .gitattributes | ||
| .gitignore | ||
| .mailmap | ||
| COPYING | ||
| CREDITS | ||
| Kbuild | ||
| Kconfig | ||
| MAINTAINERS | ||
| Makefile | ||
| README | ||
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
See Documentation/00-INDEX for a list of what is contained in each file.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.