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| Filename | Latest commit message | Latest commit date |
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c44301fce6
Currently tests modify i915.enable_psr and then do a modeset cycle to change PSR. We can write a value to i915_edp_psr_debug to force a certain PSR mode without a modeset. To retain compatibility with older userspace, we also still allow the override through the module parameter, and add some tracking to check whether a debugfs mode is specified. Changes since v1: - Rename dev_priv->psr.enabled to .dp, and .hw_configured to .enabled. - Fix i915_psr_debugfs_mode to match the writes to debugfs. - Rename __i915_edp_psr_write to intel_psr_set_debugfs_mode, simplify it and move it to intel_psr.c. This keeps all internals in intel_psr.c - Perform an interruptible wait for hw completion outside of the psr lock, instead of being forced to trywait and return -EBUSY. Changes since v2: - Rebase on top of intel_psr changes. Changes since v3: - Assign psr.dp during init. (dhnkrn) - Add prepared bool, which should be used instead of relying on psr.dp. (dhnkrn) - Fix -EDEADLK handling in debugfs. (dhnkrn) - Clean up waiting for idle in intel_psr_set_debugfs_mode. - Print PSR mode when trying to enable PSR. (dhnkrn) - Move changing psr debug setting to i915_edp_psr_debug_set. (dhnkrn) Changes since v4: - Return error in _set() function. - Change flag values to make them easier to remember. (dhnkrn) - Only assign psr.dp once. (dhnkrn) - Only set crtc_state->has_psr on the crtc with psr.dp. - Fix typo. (dhnkrn) Changes since v5: - Only wait for PSR idle on the PSR connector correctly. (dhnkrn) - Reinstate WARN_ON(drrs.dp) in intel_psr_enable. (dhnkrn) - Remove stray comment. (dhnkrn) - Be silent in intel_psr_compute_config on wrong connector. (dhnkrn) Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com> Cc: Rodrigo Vivi <rodrigo.vivi@intel.com> Cc: Dhinakaran Pandiyan <dhinakaran.pandiyan@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20180809142101.26155-1-maarten.lankhorst@linux.intel.com Reviewed-by: Dhinakaran Pandiyan <dhinakaran.pandiyan@intel.com> |
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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.