[Intel-gfx] [PATCH] drm/i915: Add DPCD quirk for AUO PSR2 panel

kbuild test robot lkp at intel.com
Wed Dec 11 00:47:27 UTC 2019


Hi Gaurav,

Thank you for the patch! Perhaps something to improve:

[auto build test WARNING on drm-intel/for-linux-next]
[also build test WARNING on drm-tip/drm-tip linus/master v5.5-rc1 next-20191210]
[if your patch is applied to the wrong git tree, please drop us a note to help
improve the system. BTW, we also suggest to use '--base' option to specify the
base tree in git format-patch, please see https://stackoverflow.com/a/37406982]

url:    https://github.com/0day-ci/linux/commits/Gaurav-K-Singh/drm-i915-Add-DPCD-quirk-for-AUO-PSR2-panel/20191211-064743
base:   git://anongit.freedesktop.org/drm-intel for-linux-next
reproduce: make htmldocs

If you fix the issue, kindly add following tag
Reported-by: kbuild test robot <lkp at intel.com>

All warnings (new ones prefixed by >>):

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   include/linux/lsm_hooks.h:1822: warning: Function parameter or member 'quotactl' not described in 'security_list_options'
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   drivers/gpio/gpiolib-of.c:92: warning: Excess function parameter 'dev' description in 'of_gpio_need_valid_mask'
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   include/linux/netdevice.h:2063: warning: Function parameter or member 'xps_cpus_map' not described in 'net_device'
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   include/linux/phylink.h:56: warning: Function parameter or member '__ETHTOOL_DECLARE_LINK_MODE_MASK(advertising' not described in 'phylink_link_state'
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   lib/genalloc.c:1: warning: 'gen_pool_add_virt' not found
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   mm/util.c:1: warning: 'get_user_pages_fast' not found
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   drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h:254: warning: Function parameter or member 'hdcp_workqueue' not described in 'amdgpu_display_manager'
   include/drm/drm_modeset_helper_vtables.h:1052: warning: Function parameter or member 'prepare_writeback_job' not described in 'drm_connector_helper_funcs'
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   include/drm/drm_dp_helper.h:1525: warning: Incorrect use of kernel-doc format:          * @DP_DPCD_QUIRK_SYNCHRONIZATION_LATENCY
>> include/drm/drm_dp_helper.h:1533: warning: Enum value 'DP_DPCD_QUIRK_SYNCHRONIZATION_LATENCY' not described in enum 'drm_dp_quirk'
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vim +1533 include/drm/drm_dp_helper.h

118b90f3f18e73 Jani Nikula           2017-05-18  1490  
118b90f3f18e73 Jani Nikula           2017-05-18  1491  int drm_dp_read_desc(struct drm_dp_aux *aux, struct drm_dp_desc *desc,
118b90f3f18e73 Jani Nikula           2017-05-18  1492  		     bool is_branch);
118b90f3f18e73 Jani Nikula           2017-05-18  1493  
76fa998acd86b6 Jani Nikula           2017-05-18  1494  /**
76fa998acd86b6 Jani Nikula           2017-05-18  1495   * enum drm_dp_quirk - Display Port sink/branch device specific quirks
76fa998acd86b6 Jani Nikula           2017-05-18  1496   *
76fa998acd86b6 Jani Nikula           2017-05-18  1497   * Display Port sink and branch devices in the wild have a variety of bugs, try
76fa998acd86b6 Jani Nikula           2017-05-18  1498   * to collect them here. The quirks are shared, but it's up to the drivers to
76fa998acd86b6 Jani Nikula           2017-05-18  1499   * implement workarounds for them.
76fa998acd86b6 Jani Nikula           2017-05-18  1500   */
76fa998acd86b6 Jani Nikula           2017-05-18  1501  enum drm_dp_quirk {
76fa998acd86b6 Jani Nikula           2017-05-18  1502  	/**
53ca2edcf033f3 Lee, Shawn C          2018-09-11  1503  	 * @DP_DPCD_QUIRK_CONSTANT_N:
76fa998acd86b6 Jani Nikula           2017-05-18  1504  	 *
76fa998acd86b6 Jani Nikula           2017-05-18  1505  	 * The device requires main link attributes Mvid and Nvid to be limited
53ca2edcf033f3 Lee, Shawn C          2018-09-11  1506  	 * to 16 bits. So will give a constant value (0x8000) for compatability.
76fa998acd86b6 Jani Nikula           2017-05-18  1507  	 */
53ca2edcf033f3 Lee, Shawn C          2018-09-11  1508  	DP_DPCD_QUIRK_CONSTANT_N,
7c5c641a930ed0 José Roberto de Souza 2018-12-03  1509  	/**
ed17b555303c74 José Roberto de Souza 2018-12-05  1510  	 * @DP_DPCD_QUIRK_NO_PSR:
7c5c641a930ed0 José Roberto de Souza 2018-12-03  1511  	 *
7c5c641a930ed0 José Roberto de Souza 2018-12-03  1512  	 * The device does not support PSR even if reports that it supports or
7c5c641a930ed0 José Roberto de Souza 2018-12-03  1513  	 * driver still need to implement proper handling for such device.
7c5c641a930ed0 José Roberto de Souza 2018-12-03  1514  	 */
7c5c641a930ed0 José Roberto de Souza 2018-12-03  1515  	DP_DPCD_QUIRK_NO_PSR,
7974033e527a5d Ville Syrjälä         2019-05-28  1516  	/**
7974033e527a5d Ville Syrjälä         2019-05-28  1517  	 * @DP_DPCD_QUIRK_NO_SINK_COUNT:
7974033e527a5d Ville Syrjälä         2019-05-28  1518  	 *
7974033e527a5d Ville Syrjälä         2019-05-28  1519  	 * The device does not set SINK_COUNT to a non-zero value.
7974033e527a5d Ville Syrjälä         2019-05-28  1520  	 * The driver should ignore SINK_COUNT during detection.
7974033e527a5d Ville Syrjälä         2019-05-28  1521  	 */
7974033e527a5d Ville Syrjälä         2019-05-28  1522  	DP_DPCD_QUIRK_NO_SINK_COUNT,
8c57c0a07182ad Gaurav K Singh        2019-12-10  1523  	/**
8c57c0a07182ad Gaurav K Singh        2019-12-10  1524  	 * @DP_DPCD_QUIRK_SYNCHRONIZATION_LATENCY
8c57c0a07182ad Gaurav K Singh        2019-12-10 @1525  	 *
8c57c0a07182ad Gaurav K Singh        2019-12-10  1526  	 * The Helios AUO PSR2 panel requires more number of frames on PSR exit,
8c57c0a07182ad Gaurav K Singh        2019-12-10  1527  	 * to synchronize to the Source device-provided timing. Currently DPCD
8c57c0a07182ad Gaurav K Singh        2019-12-10  1528  	 * 0x2009 offset in TCON has the value of 0. Increasing this value to 8
8c57c0a07182ad Gaurav K Singh        2019-12-10  1529  	 * till this gets fixed in TCON of the panel.
8c57c0a07182ad Gaurav K Singh        2019-12-10  1530  	 */
8c57c0a07182ad Gaurav K Singh        2019-12-10  1531  	DP_DPCD_QUIRK_SYNCHRONIZATION_LATENCY,
76fa998acd86b6 Jani Nikula           2017-05-18  1532  };
76fa998acd86b6 Jani Nikula           2017-05-18 @1533  

:::::: The code at line 1533 was first introduced by commit
:::::: 76fa998acd86b6b40d0217e12af39c2406bdcd2b drm/dp: start a DPCD based DP sink/branch device quirk database

:::::: TO: Jani Nikula <jani.nikula at intel.com>
:::::: CC: Jani Nikula <jani.nikula at intel.com>

---
0-DAY kernel test infrastructure                 Open Source Technology Center
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org Intel Corporation
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