Commit e8de4d55 authored by Douglas Anderson's avatar Douglas Anderson
Browse files

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: default avatarDouglas Anderson <dianders@chromium.org>
Reviewed-by: default avatarJani Nikula <jani.nikula@intel.com>
Acked-by: default avatarLinus Walleij <linus.walleij@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20210914132020.v5.4.I6103ce2b16e5e5a842b14c7022a034712b434609@changeid
parent d9f91a10
......@@ -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
......@@ -2197,25 +2201,6 @@ 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;
}
......
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