diff options
author | Douglas Anderson <dianders@chromium.org> | 2021-09-14 23:21:51 +0300 |
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committer | Douglas Anderson <dianders@chromium.org> | 2021-09-20 19:18:01 +0300 |
commit | e8de4d55c2590c57e0c1decedc4b0605528f27a7 (patch) | |
tree | 69273509fa35247bd18d51c95f22a72b3effd791 /drivers/gpu/drm/drm_edid.c | |
parent | d9f91a10c3e8b8b6f6762e35f2905a8914ca309d (diff) | |
download | linux-e8de4d55c2590c57e0c1decedc4b0605528f27a7.tar.xz |
drm/edid: Use new encoded panel id style for quirks matching
In the patch ("drm/edid: Allow the querying/working with the panel ID
from the EDID") we introduced a different way of working with the
panel ID stored in the EDID. Let's use this new way for the quirks
code.
Advantages of the new style:
* Smaller data structure size. Saves 4 bytes per panel.
* Iterate through quirks structure with just "==" instead of strncmp()
* In-kernel storage is more similar to what's stored in the EDID
itself making it easier to grok that they are referring to the same
value.
Signed-off-by: Douglas Anderson <dianders@chromium.org>
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20210914132020.v5.4.I6103ce2b16e5e5a842b14c7022a034712b434609@changeid
Diffstat (limited to 'drivers/gpu/drm/drm_edid.c')
-rw-r--r-- | drivers/gpu/drm/drm_edid.c | 156 |
1 files changed, 70 insertions, 86 deletions
diff --git a/drivers/gpu/drm/drm_edid.c b/drivers/gpu/drm/drm_edid.c index f84e0dd264f4..53b342c058be 100644 --- a/drivers/gpu/drm/drm_edid.c +++ b/drivers/gpu/drm/drm_edid.c @@ -100,122 +100,127 @@ struct detailed_mode_closure { #define LEVEL_GTF2 2 #define LEVEL_CVT 3 +#define EDID_QUIRK(vend, product_id, _quirks) \ +{ \ + .panel_id = drm_edid_encode_panel_id(vend, product_id), \ + .quirks = _quirks \ +} + static const struct edid_quirk { - char vendor[4]; - int product_id; + u32 panel_id; u32 quirks; } edid_quirk_list[] = { /* Acer AL1706 */ - { "ACR", 44358, EDID_QUIRK_PREFER_LARGE_60 }, + EDID_QUIRK("ACR", 44358, EDID_QUIRK_PREFER_LARGE_60), /* Acer F51 */ - { "API", 0x7602, EDID_QUIRK_PREFER_LARGE_60 }, + EDID_QUIRK("API", 0x7602, EDID_QUIRK_PREFER_LARGE_60), /* AEO model 0 reports 8 bpc, but is a 6 bpc panel */ - { "AEO", 0, EDID_QUIRK_FORCE_6BPC }, + EDID_QUIRK("AEO", 0, EDID_QUIRK_FORCE_6BPC), /* BOE model on HP Pavilion 15-n233sl reports 8 bpc, but is a 6 bpc panel */ - { "BOE", 0x78b, EDID_QUIRK_FORCE_6BPC }, + EDID_QUIRK("BOE", 0x78b, EDID_QUIRK_FORCE_6BPC), /* CPT panel of Asus UX303LA reports 8 bpc, but is a 6 bpc panel */ - { "CPT", 0x17df, EDID_QUIRK_FORCE_6BPC }, + EDID_QUIRK("CPT", 0x17df, EDID_QUIRK_FORCE_6BPC), /* SDC panel of Lenovo B50-80 reports 8 bpc, but is a 6 bpc panel */ - { "SDC", 0x3652, EDID_QUIRK_FORCE_6BPC }, + EDID_QUIRK("SDC", 0x3652, EDID_QUIRK_FORCE_6BPC), /* BOE model 0x0771 reports 8 bpc, but is a 6 bpc panel */ - { "BOE", 0x0771, EDID_QUIRK_FORCE_6BPC }, + EDID_QUIRK("BOE", 0x0771, EDID_QUIRK_FORCE_6BPC), /* Belinea 10 15 55 */ - { "MAX", 1516, EDID_QUIRK_PREFER_LARGE_60 }, - { "MAX", 0x77e, EDID_QUIRK_PREFER_LARGE_60 }, + EDID_QUIRK("MAX", 1516, EDID_QUIRK_PREFER_LARGE_60), + EDID_QUIRK("MAX", 0x77e, EDID_QUIRK_PREFER_LARGE_60), /* Envision Peripherals, Inc. EN-7100e */ - { "EPI", 59264, EDID_QUIRK_135_CLOCK_TOO_HIGH }, + EDID_QUIRK("EPI", 59264, EDID_QUIRK_135_CLOCK_TOO_HIGH), /* Envision EN2028 */ - { "EPI", 8232, EDID_QUIRK_PREFER_LARGE_60 }, + EDID_QUIRK("EPI", 8232, EDID_QUIRK_PREFER_LARGE_60), /* Funai Electronics PM36B */ - { "FCM", 13600, EDID_QUIRK_PREFER_LARGE_75 | - EDID_QUIRK_DETAILED_IN_CM }, + EDID_QUIRK("FCM", 13600, EDID_QUIRK_PREFER_LARGE_75 | + EDID_QUIRK_DETAILED_IN_CM), /* LGD panel of HP zBook 17 G2, eDP 10 bpc, but reports unknown bpc */ - { "LGD", 764, EDID_QUIRK_FORCE_10BPC }, + EDID_QUIRK("LGD", 764, EDID_QUIRK_FORCE_10BPC), /* LG Philips LCD LP154W01-A5 */ - { "LPL", 0, EDID_QUIRK_DETAILED_USE_MAXIMUM_SIZE }, - { "LPL", 0x2a00, EDID_QUIRK_DETAILED_USE_MAXIMUM_SIZE }, + EDID_QUIRK("LPL", 0, EDID_QUIRK_DETAILED_USE_MAXIMUM_SIZE), + EDID_QUIRK("LPL", 0x2a00, EDID_QUIRK_DETAILED_USE_MAXIMUM_SIZE), /* Samsung SyncMaster 205BW. Note: irony */ - { "SAM", 541, EDID_QUIRK_DETAILED_SYNC_PP }, + EDID_QUIRK("SAM", 541, EDID_QUIRK_DETAILED_SYNC_PP), /* Samsung SyncMaster 22[5-6]BW */ - { "SAM", 596, EDID_QUIRK_PREFER_LARGE_60 }, - { "SAM", 638, EDID_QUIRK_PREFER_LARGE_60 }, + EDID_QUIRK("SAM", 596, EDID_QUIRK_PREFER_LARGE_60), + EDID_QUIRK("SAM", 638, EDID_QUIRK_PREFER_LARGE_60), /* Sony PVM-2541A does up to 12 bpc, but only reports max 8 bpc */ - { "SNY", 0x2541, EDID_QUIRK_FORCE_12BPC }, + EDID_QUIRK("SNY", 0x2541, EDID_QUIRK_FORCE_12BPC), /* ViewSonic VA2026w */ - { "VSC", 5020, EDID_QUIRK_FORCE_REDUCED_BLANKING }, + EDID_QUIRK("VSC", 5020, EDID_QUIRK_FORCE_REDUCED_BLANKING), /* Medion MD 30217 PG */ - { "MED", 0x7b8, EDID_QUIRK_PREFER_LARGE_75 }, + EDID_QUIRK("MED", 0x7b8, EDID_QUIRK_PREFER_LARGE_75), /* Lenovo G50 */ - { "SDC", 18514, EDID_QUIRK_FORCE_6BPC }, + EDID_QUIRK("SDC", 18514, EDID_QUIRK_FORCE_6BPC), /* Panel in Samsung NP700G7A-S01PL notebook reports 6bpc */ - { "SEC", 0xd033, EDID_QUIRK_FORCE_8BPC }, + EDID_QUIRK("SEC", 0xd033, EDID_QUIRK_FORCE_8BPC), /* Rotel RSX-1058 forwards sink's EDID but only does HDMI 1.1*/ - { "ETR", 13896, EDID_QUIRK_FORCE_8BPC }, + EDID_QUIRK("ETR", 13896, EDID_QUIRK_FORCE_8BPC), /* Valve Index Headset */ - { "VLV", 0x91a8, EDID_QUIRK_NON_DESKTOP }, - { "VLV", 0x91b0, EDID_QUIRK_NON_DESKTOP }, - { "VLV", 0x91b1, EDID_QUIRK_NON_DESKTOP }, - { "VLV", 0x91b2, EDID_QUIRK_NON_DESKTOP }, - { "VLV", 0x91b3, EDID_QUIRK_NON_DESKTOP }, - { "VLV", 0x91b4, EDID_QUIRK_NON_DESKTOP }, - { "VLV", 0x91b5, EDID_QUIRK_NON_DESKTOP }, - { "VLV", 0x91b6, EDID_QUIRK_NON_DESKTOP }, - { "VLV", 0x91b7, EDID_QUIRK_NON_DESKTOP }, - { "VLV", 0x91b8, EDID_QUIRK_NON_DESKTOP }, - { "VLV", 0x91b9, EDID_QUIRK_NON_DESKTOP }, - { "VLV", 0x91ba, EDID_QUIRK_NON_DESKTOP }, - { "VLV", 0x91bb, EDID_QUIRK_NON_DESKTOP }, - { "VLV", 0x91bc, EDID_QUIRK_NON_DESKTOP }, - { "VLV", 0x91bd, EDID_QUIRK_NON_DESKTOP }, - { "VLV", 0x91be, EDID_QUIRK_NON_DESKTOP }, - { "VLV", 0x91bf, EDID_QUIRK_NON_DESKTOP }, + EDID_QUIRK("VLV", 0x91a8, EDID_QUIRK_NON_DESKTOP), + EDID_QUIRK("VLV", 0x91b0, EDID_QUIRK_NON_DESKTOP), + EDID_QUIRK("VLV", 0x91b1, EDID_QUIRK_NON_DESKTOP), + EDID_QUIRK("VLV", 0x91b2, EDID_QUIRK_NON_DESKTOP), + EDID_QUIRK("VLV", 0x91b3, EDID_QUIRK_NON_DESKTOP), + EDID_QUIRK("VLV", 0x91b4, EDID_QUIRK_NON_DESKTOP), + EDID_QUIRK("VLV", 0x91b5, EDID_QUIRK_NON_DESKTOP), + EDID_QUIRK("VLV", 0x91b6, EDID_QUIRK_NON_DESKTOP), + EDID_QUIRK("VLV", 0x91b7, EDID_QUIRK_NON_DESKTOP), + EDID_QUIRK("VLV", 0x91b8, EDID_QUIRK_NON_DESKTOP), + EDID_QUIRK("VLV", 0x91b9, EDID_QUIRK_NON_DESKTOP), + EDID_QUIRK("VLV", 0x91ba, EDID_QUIRK_NON_DESKTOP), + EDID_QUIRK("VLV", 0x91bb, EDID_QUIRK_NON_DESKTOP), + EDID_QUIRK("VLV", 0x91bc, EDID_QUIRK_NON_DESKTOP), + EDID_QUIRK("VLV", 0x91bd, EDID_QUIRK_NON_DESKTOP), + EDID_QUIRK("VLV", 0x91be, EDID_QUIRK_NON_DESKTOP), + EDID_QUIRK("VLV", 0x91bf, EDID_QUIRK_NON_DESKTOP), /* HTC Vive and Vive Pro VR Headsets */ - { "HVR", 0xaa01, EDID_QUIRK_NON_DESKTOP }, - { "HVR", 0xaa02, EDID_QUIRK_NON_DESKTOP }, + EDID_QUIRK("HVR", 0xaa01, EDID_QUIRK_NON_DESKTOP), + EDID_QUIRK("HVR", 0xaa02, EDID_QUIRK_NON_DESKTOP), /* Oculus Rift DK1, DK2, CV1 and Rift S VR Headsets */ - { "OVR", 0x0001, EDID_QUIRK_NON_DESKTOP }, - { "OVR", 0x0003, EDID_QUIRK_NON_DESKTOP }, - { "OVR", 0x0004, EDID_QUIRK_NON_DESKTOP }, - { "OVR", 0x0012, EDID_QUIRK_NON_DESKTOP }, + EDID_QUIRK("OVR", 0x0001, EDID_QUIRK_NON_DESKTOP), + EDID_QUIRK("OVR", 0x0003, EDID_QUIRK_NON_DESKTOP), + EDID_QUIRK("OVR", 0x0004, EDID_QUIRK_NON_DESKTOP), + EDID_QUIRK("OVR", 0x0012, EDID_QUIRK_NON_DESKTOP), /* Windows Mixed Reality Headsets */ - { "ACR", 0x7fce, EDID_QUIRK_NON_DESKTOP }, - { "HPN", 0x3515, EDID_QUIRK_NON_DESKTOP }, - { "LEN", 0x0408, EDID_QUIRK_NON_DESKTOP }, - { "LEN", 0xb800, EDID_QUIRK_NON_DESKTOP }, - { "FUJ", 0x1970, EDID_QUIRK_NON_DESKTOP }, - { "DEL", 0x7fce, EDID_QUIRK_NON_DESKTOP }, - { "SEC", 0x144a, EDID_QUIRK_NON_DESKTOP }, - { "AUS", 0xc102, EDID_QUIRK_NON_DESKTOP }, + EDID_QUIRK("ACR", 0x7fce, EDID_QUIRK_NON_DESKTOP), + EDID_QUIRK("HPN", 0x3515, EDID_QUIRK_NON_DESKTOP), + EDID_QUIRK("LEN", 0x0408, EDID_QUIRK_NON_DESKTOP), + EDID_QUIRK("LEN", 0xb800, EDID_QUIRK_NON_DESKTOP), + EDID_QUIRK("FUJ", 0x1970, EDID_QUIRK_NON_DESKTOP), + EDID_QUIRK("DEL", 0x7fce, EDID_QUIRK_NON_DESKTOP), + EDID_QUIRK("SEC", 0x144a, EDID_QUIRK_NON_DESKTOP), + EDID_QUIRK("AUS", 0xc102, EDID_QUIRK_NON_DESKTOP), /* Sony PlayStation VR Headset */ - { "SNY", 0x0704, EDID_QUIRK_NON_DESKTOP }, + EDID_QUIRK("SNY", 0x0704, EDID_QUIRK_NON_DESKTOP), /* Sensics VR Headsets */ - { "SEN", 0x1019, EDID_QUIRK_NON_DESKTOP }, + EDID_QUIRK("SEN", 0x1019, EDID_QUIRK_NON_DESKTOP), /* OSVR HDK and HDK2 VR Headsets */ - { "SVR", 0x1019, EDID_QUIRK_NON_DESKTOP }, + EDID_QUIRK("SVR", 0x1019, EDID_QUIRK_NON_DESKTOP), }; /* @@ -2090,9 +2095,8 @@ EXPORT_SYMBOL(drm_get_edid); static u32 edid_extract_panel_id(const struct edid *edid) { /* - * In theory we could try to de-obfuscate this like edid_get_quirks() - * does, but it's easier to just deal with a 32-bit number since then - * it can be compared with "==". + * We represent the ID as a 32-bit number so it can easily be compared + * with "==". * * NOTE that we deal with endianness differently for the top half * of this ID than for the bottom half. The bottom half (the product @@ -2198,25 +2202,6 @@ EXPORT_SYMBOL(drm_edid_duplicate); /*** EDID parsing ***/ /** - * edid_vendor - match a string against EDID's obfuscated vendor field - * @edid: EDID to match - * @vendor: vendor string - * - * Returns true if @vendor is in @edid, false otherwise - */ -static bool edid_vendor(const struct edid *edid, const char *vendor) -{ - char edid_vendor[3]; - - edid_vendor[0] = ((edid->mfg_id[0] & 0x7c) >> 2) + '@'; - edid_vendor[1] = (((edid->mfg_id[0] & 0x3) << 3) | - ((edid->mfg_id[1] & 0xe0) >> 5)) + '@'; - edid_vendor[2] = (edid->mfg_id[1] & 0x1f) + '@'; - - return !strncmp(edid_vendor, vendor, 3); -} - -/** * edid_get_quirks - return quirk flags for a given EDID * @edid: EDID to process * @@ -2224,14 +2209,13 @@ static bool edid_vendor(const struct edid *edid, const char *vendor) */ static u32 edid_get_quirks(const struct edid *edid) { + u32 panel_id = edid_extract_panel_id(edid); const struct edid_quirk *quirk; int i; for (i = 0; i < ARRAY_SIZE(edid_quirk_list); i++) { quirk = &edid_quirk_list[i]; - - if (edid_vendor(edid, quirk->vendor) && - (EDID_PRODUCT_ID(edid) == quirk->product_id)) + if (quirk->panel_id == panel_id) return quirk->quirks; } |