From mboxrd@z Thu Jan 1 00:00:00 1970 From: Daniel Vetter Subject: Re: [PATCH] drm/i915/dp: Try to find proper bpc for DP->legacy converters. (v2) Date: Tue, 17 May 2016 08:51:39 +0200 Message-ID: <20160517065139.GH27098@phenom.ffwll.local> References: <1463071438-10786-1-git-send-email-mario.kleiner.de@gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: Received: from mail-wm0-x241.google.com (mail-wm0-x241.google.com [IPv6:2a00:1450:400c:c09::241]) by gabe.freedesktop.org (Postfix) with ESMTPS id C37D06E387 for ; Tue, 17 May 2016 06:51:40 +0000 (UTC) Received: by mail-wm0-x241.google.com with SMTP id r12so2127325wme.0 for ; Mon, 16 May 2016 23:51:40 -0700 (PDT) Content-Disposition: inline In-Reply-To: <1463071438-10786-1-git-send-email-mario.kleiner.de@gmail.com> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" To: Mario Kleiner Cc: Daniel Vetter , stable@vger.kernel.org, dri-devel@lists.freedesktop.org List-Id: dri-devel@lists.freedesktop.org T24gVGh1LCBNYXkgMTIsIDIwMTYgYXQgMDY6NDM6NThQTSArMDIwMCwgTWFyaW8gS2xlaW5lciB3 cm90ZToKPiBUaGlzIGZpeGVzIGEgcmVncmVzc2lvbiBpbiBvdXRwdXQgcHJlY2lzaW9uIGZvciBE VkkgYW5kIFZHQQo+IHZpZGVvIHNpbmtzIGNvbm5lY3RlZCB0byBJbnRlbCBodyB2aWEgYWN0aXZl IERpc3BsYXlQb3J0LT5EVkkvVkdBCj4gY29udmVydGVycy4KPiAKPiBUaGUgcmVncmVzc2lvbiB3 YXMgaW5kaXJlY3RseSBpbnRyb2R1Y2VkIGJ5IGNvbW1pdCAwMTNkZDllMDM4NzIKPiAoImRybS9p OTE1L2RwOiBmYWxsIGJhY2sgdG8gMTggYnBwIHdoZW4gc2luayBjYXBhYmlsaXR5IGlzIHVua25v d24iKS4KPiAKPiBPdXIgY3VycmVudCBkcm0gZWRpZCAxLjMgaGFuZGxpbmcgY2FuJ3QgcmVsaWFi bHkgYXNzaWduIGEgcHJvcGVyCj4gbWluaW11bSBzdXBwb3J0ZWQgZGlzcGxheSBkZXB0aCBvZiA4 IGJwYyB0byBhbGwgRFZJIHNpbmtzLCBhcwo+IG1hbmRhdGVkIGJ5IERWSSAxLjAgc3BlYywgc2Vj dGlvbiAyLjIuMTEuMiAiTW9uaXRvciBkYXRhIGZvcm1hdAo+IHN1cHBvcnQiLCBidXQgcmV0dXJu cyAwIGJwYyA9ICJEb24ndCBrbm93IiBpbnN0ZWFkLiBGb3IgYW5hbG9nIFZHQQo+IHNpbmtzIGl0 IGFsc28gcmV0dXJucyAwIGJwYywgYWx0aG91Z2ggdGhvc2Ugc2lua3MgdGhlbXNlbHZlcyBoYXZl Cj4gaW5maW5pdGUgY29sb3IgZGVwdGgsIG9ubHkgcmVzdHJpY3RlZCBieSB0aGUgREFDIHJlc29s dXRpb24gb2YKPiB0aGUgZW5jb2Rlci4KPiAKPiBJZiBhIFZHQSBvciBkdWFsLWxpbmsgRFZJIGRp c3BsYXkgaXMgY29ubmVjdGVkIHZpYSBEaXNwbGF5UG9ydAo+IGNvbm5lY3RvciB0aGVuIGR1ZSB0 byBhYm92ZSBjb21taXQgdGhlIGRyaXZlciB3b3VsZCBmYWxsIGJhY2sgdG8KPiBvbmx5IDYgYnBj LCB3aGljaCB3b3VsZCBjYXVzZSBkZWdyYWRhdGlvbiBmb3IgRFZJIGFuZCBWR0EgZGlzcGxheXMs Cj4gYW5ub3lpbmcgaW4gZ2VuZXJhbCwgYnV0IGVzcGVjaWFsbHkgaGFybWZ1bCBmb3IgYXBwbGlj YXRpb24gb2YgZGlzcGxheQo+IGRldmljZXMgdXNlZCBpbiBuZXVyb3NjaWVuY2UgcmVzZWFyY2gg YW5kIGZvciBtZWRpY2FsIGRpYWdub3NpYwo+IHdoaWNoIGFic29sdXRlbHkgbmVlZCBuYXRpdmUg bm9uLWRpdGhlcmVkIDggYnBjIGF0IGEgbWluaW11bSB0bwo+IG9wZXJhdGUgY29ycmVjdGx5Lgo+ IAo+IEZvciBEUCBjb25uZWN0b3JzIHdpdGggYnBjID09IDAgYWNjb3JkaW5nIHRvIEVESUQsIGZp eCB0aGlzIHByb2JsZW0KPiBieSBjaGVja2luZyB0aGUgZHBjZCBkYXRhIHRvIGZpbmQgb3V0IGlm IGEgRFAtPmxlZ2FjeSBjb252ZXJ0ZXIKPiBpcyBjb25uZWN0ZWQuIElmIHRoZSBjb252ZXJ0ZXIg aXMgRFAtPkRWSS9IRE1JIGFzc3VtZSA4IGJwYwo+IGRlcHRoLiBJZiB0aGUgY29udmVydGVyIGlz IERQLT5WR0EgYXNzdW1lIGF0IGxlYXN0IDggYnBjLCBidXQKPiB0cnkgdG8gZ2V0IGEgbW9yZSBh Y2N1cmF0ZSB2YWx1ZSAoOCwgMTAsIDEyIG9yIDE2IGJwYykgaWYgdGhlCj4gY29udmVydGVyIGV4 cG9zZXMgdGhpcyBpbmZvLgo+IAo+IE9ubHkgZm9yIGEgRFAgc2luayB3aXRob3V0IGRvd25zdHJl YW0gcG9ydHMgd2UgYXNzdW1lIGl0IGlzIGEgbmF0aXZlIERQCj4gc2luayBhbmQgYXBwbHkgdGhl IDYgYnBjIC8gMTggYnBwIGZhbGxiYWNrIGFzIHJlcXVpcmVkIGJ5IHRoZSBEUCBzcGVjLgo+IAo+ IEFzIHRoZSAiZmFsbCBiYWNrIHRvIDE4IGJwcCIgcGF0Y2ggd2FzIGJhY2twb3J0ZWQgdG8gc3Rh YmxlIHdlIHNob3VsZAo+IGluY2x1ZGUgdGhpcyBvbmUgYWxzbyBpbnRvIHN0YWJsZSB0byBmaXgg dGhlIHJlZ3Jlc3Npb24gaW4gY29sb3IKPiBwcmVjaXNpb24uCj4gCj4gVGVzdGVkIHdpdGggTWlu aURQLT5EUCBhZGFwdGVyLCBNaW5pRFAtPkhETUkgYWRhcHRlciwKPiBNaW5pRFAtPnNpbmdsZS1s aW5rIERWSSBhZGFwdGVyLCBNaW5pRFAtPmR1YWwtbGluayBEVkkgYWN0aXZlIGFkYXB0ZXIsCj4g YW5kIEFwcGxlIE1pbmlEUC0+VkdBIGFjdGl2ZSBhZGFwdGVyLgo+IAo+IHYyOiBUYWtlIFZpbGxl J3MgZmVlZGJhY2sgaW50byBhY2NvdW50OiBGb2xkIHRoZSAxOCBicHAgZmFsbGJhY2sgaW50bwo+ ICAgICB0aGUgZGV0ZWN0aW9uIGZ1bmN0aW9uLCBzbyBpdCBvbmx5IGFwcGxpZXMgdG8gbmF0aXZl IERQIHNpbmtzLgo+ICAgICBSZW5hbWUgaW50ZWxfZHBfbGVnYWN5X2JwYygpIHRvIGludGVsX2Rw X3NpbmtfYnBjKCkuCj4gCj4gU2lnbmVkLW9mZi1ieTogTWFyaW8gS2xlaW5lciA8bWFyaW8ua2xl aW5lci5kZUBnbWFpbC5jb20+Cj4gQ2M6IFZpbGxlIFN5cmrDpGzDpCA8dmlsbGUuc3lyamFsYUBs aW51eC5pbnRlbC5jb20+Cj4gQ2M6IERhbmllbCBWZXR0ZXIgPGRhbmllbC52ZXR0ZXJAZmZ3bGwu Y2g+Cj4gQ2M6IHN0YWJsZUB2Z2VyLmtlcm5lbC5vcmcKPiAtLS0KPiAgZHJpdmVycy9ncHUvZHJt L2k5MTUvaW50ZWxfZGlzcGxheS5jIHwgMTIgKysrKysrLS0KPiAgZHJpdmVycy9ncHUvZHJtL2k5 MTUvaW50ZWxfZHAuYyAgICAgIHwgNTkgKysrKysrKysrKysrKysrKysrKysrKysrKysrKysrKysr KysrCj4gIGRyaXZlcnMvZ3B1L2RybS9pOTE1L2ludGVsX2Rydi5oICAgICB8ICAxICsKPiAgMyBm aWxlcyBjaGFuZ2VkLCA2OSBpbnNlcnRpb25zKCspLCAzIGRlbGV0aW9ucygtKQo+IAo+IGRpZmYg LS1naXQgYS9kcml2ZXJzL2dwdS9kcm0vaTkxNS9pbnRlbF9kaXNwbGF5LmMgYi9kcml2ZXJzL2dw dS9kcm0vaTkxNS9pbnRlbF9kaXNwbGF5LmMKPiBpbmRleCBhMjk3ZTFmLi43ZWY1MmRiIDEwMDY0 NAo+IC0tLSBhL2RyaXZlcnMvZ3B1L2RybS9pOTE1L2ludGVsX2Rpc3BsYXkuYwo+ICsrKyBiL2Ry aXZlcnMvZ3B1L2RybS9pOTE1L2ludGVsX2Rpc3BsYXkuYwo+IEBAIC0xMjA3MiwxMCArMTIwNzIs MTYgQEAgY29ubmVjdGVkX3NpbmtfY29tcHV0ZV9icHAoc3RydWN0IGludGVsX2Nvbm5lY3RvciAq Y29ubmVjdG9yLAo+ICAJCWludCB0eXBlID0gY29ubmVjdG9yLT5iYXNlLmNvbm5lY3Rvcl90eXBl Owo+ICAJCWludCBjbGFtcF9icHAgPSAyNDsKPiAgCj4gLQkJLyogRmFsbCBiYWNrIHRvIDE4IGJw cCB3aGVuIERQIHNpbmsgY2FwYWJpbGl0eSBpcyB1bmtub3duLiAqLwo+ICsJCS8qIE9uIERpc3Bs YXlQb3J0IHRyeSBoYXJkZXIgdG8gZmluZCBzaW5rIGJwYyAqLwo+ICAJCWlmICh0eXBlID09IERS TV9NT0RFX0NPTk5FQ1RPUl9EaXNwbGF5UG9ydCB8fAo+IC0JCSAgICB0eXBlID09IERSTV9NT0RF X0NPTk5FQ1RPUl9lRFApCj4gLQkJCWNsYW1wX2JwcCA9IDE4Owo+ICsJCSAgICB0eXBlID09IERS TV9NT0RFX0NPTk5FQ1RPUl9lRFApIHsKPiArCQkJaW50IHNpbmtfYnBjID0gaW50ZWxfZHBfc2lu a19icGMoJmNvbm5lY3Rvci0+YmFzZSk7Cj4gKwo+ICsJCQlpZiAoc2lua19icGMpIHsKPiArCQkJ CURSTV9ERUJVR19LTVMoIkRQIHNpbmsgd2l0aCBicGMgJWRcbiIsIHNpbmtfYnBjKTsKPiArCQkJ CWNsYW1wX2JwcCA9IDMgKiBzaW5rX2JwYzsKPiArCQkJfQo+ICsJCX0KPiAgCj4gIAkJaWYgKGJw cCA+IGNsYW1wX2JwcCkgewo+ICAJCQlEUk1fREVCVUdfS01TKCJjbGFtcGluZyBkaXNwbGF5IGJw cCAod2FzICVkKSB0byBkZWZhdWx0IGxpbWl0IG9mICVkXG4iLAo+IGRpZmYgLS1naXQgYS9kcml2 ZXJzL2dwdS9kcm0vaTkxNS9pbnRlbF9kcC5jIGIvZHJpdmVycy9ncHUvZHJtL2k5MTUvaW50ZWxf ZHAuYwo+IGluZGV4IGYxOTJmNTguLjRkYmI1NWIgMTAwNjQ0Cj4gLS0tIGEvZHJpdmVycy9ncHUv ZHJtL2k5MTUvaW50ZWxfZHAuYwo+ICsrKyBiL2RyaXZlcnMvZ3B1L2RybS9pOTE1L2ludGVsX2Rw LmMKPiBAQCAtNjA0NiwzICs2MDQ2LDYyIEBAIHZvaWQgaW50ZWxfZHBfbXN0X3Jlc3VtZShzdHJ1 Y3QgZHJtX2RldmljZSAqZGV2KQo+ICAJCX0KPiAgCX0KPiAgfQo+ICsKPiArLyogWFhYIE5lZWRz IHdvcmsgZm9yIG1vcmUgdGhhbiAxIGRvd25zdHJlYW0gcG9ydCAqLwo+ICtpbnQgaW50ZWxfZHBf c2lua19icGMoc3RydWN0IGRybV9jb25uZWN0b3IgKmNvbm5lY3RvcikKCkkgdGhpbmsgdGhlc2Ug a2luZCBvZiBmdW5jdGlvbnMgYXJlIHByZXR0eSBtdWNoIHdoeSB3ZSBoYXZlIGEgZHAgaGVsZXBy LgpDYW4geW91IHBscyBtb3ZlIGl0IHRoZXJlIChhbmQgYWRkIGtlcm5lbGRvYyBhbmQgYWxsIHRo ZSB1c3VhbApiaXRzJnBpZWNlcykuIFRoZXJlJ3MgYWxzbyBvdGhlciBwYXRjaGVzIGluLWZsaWdo dCB0byBhZGQgbW9yZSBkb3duc3RyZWFtCnBvcnQgaGFuZGxpbmcgLi4uCi1EYW5pZWwKCj4gK3sK PiArCXN0cnVjdCBpbnRlbF9kcCAqaW50ZWxfZHAgPSBpbnRlbF9hdHRhY2hlZF9kcChjb25uZWN0 b3IpOwo+ICsJdWludDhfdCAqZHBjZCA9IGludGVsX2RwLT5kcGNkOwo+ICsJdWludDhfdCB0eXBl Owo+ICsJaW50IGJwYyA9IDA7Cj4gKwo+ICsJLyoKPiArCSAqIElmIHRoZXJlIGlzbid0IGFueSBk b3duc3RyZWFtIHBvcnQgdGhlbiB0aGlzIGlzIGEgbmF0aXZlIERQIHNpbmsuCj4gKwkgKiBUaGUg c3RhbmRhcmQgcmVxdWlyZXMgdG8gZmFsbCBiYWNrIHRvIDYgYnBjIC8gMTggYnBwIGZvciBuYXRp dmUgRFAKPiArCSAqIHNpbmtzIHdoaWNoIGRvbid0IHByb3ZpZGUgYml0IGRlcHRoIHZpYSBFRElE Lgo+ICsJICovCj4gKwlpZiAoIShkcGNkW0RQX0RPV05TVFJFQU1QT1JUX1BSRVNFTlRdICYgRFBf RFdOX1NUUk1fUE9SVF9QUkVTRU5UKSkKPiArCQlyZXR1cm4gNjsKPiArCj4gKwkvKiBCYXNpYyB0 eXBlIG9mIGRvd25zdHJlYW0gcG9ydHMgKi8KPiArCXR5cGUgPSBkcGNkW0RQX0RPV05TVFJFQU1Q T1JUX1BSRVNFTlRdICYgRFBfRFdOX1NUUk1fUE9SVF9UWVBFX01BU0s7Cj4gKwo+ICsJLyoKPiAr CSAqIExhY2tpbmcgb3RoZXIgaW5mbywgOCBicGMgaXMgYSByZWFzb25hYmxlIHN0YXJ0IGZvciBh bmFsb2cgb3V0Lgo+ICsJICogRS5nLiwgQXBwbGUgTWluaURQLT5WR0EgYWRhcHRvcnMgZG9uJ3Qg cHJvdmlkZSBtb3JlIGluZm8gdGhhbgo+ICsJICogdGhhdC4gRGVzcGl0ZSBoYXZpbmcgRFBfRFBD RF9SRVYgPT0gMHgxMSB0aGVpciBkb3duc3RyZWFtX3BvcnRzCj4gKwkgKiBkZXNjcmlwdG9yIGlz IGVtcHR5IC0gYWxsIHplcm9zLgo+ICsJICovCj4gKwlpZiAodHlwZSA9PSBEUF9EV05fU1RSTV9Q T1JUX1RZUEVfQU5BTE9HKQo+ICsJCWJwYyA9IDg7Cj4gKwo+ICsJaWYgKGRwY2RbRFBfRFBDRF9S RVZdIDwgMHgxMSkKPiArCQlyZXR1cm4gYnBjOwo+ICsKPiArCS8qIFJldiAxLjErLiBNb3JlIHNw ZWNpZmljIGRvd25zdHJlYW0gcG9ydCB0eXBlIGF2YWlsYWJsZSAqLwo+ICsJdHlwZSA9IGludGVs X2RwLT5kb3duc3RyZWFtX3BvcnRzWzBdICYgRFBfRFNfUE9SVF9UWVBFX01BU0s7Cj4gKwo+ICsJ LyogVkdBLCBEVkkgYW5kIEhETUkgc3VwcG9ydCBhdCBsZWFzdCA4IGJwYyAqLwo+ICsJaWYgKHR5 cGUgPT0gRFBfRFNfUE9SVF9UWVBFX1ZHQSB8fCB0eXBlID09IERQX0RTX1BPUlRfVFlQRV9EVkkg fHwKPiArCSAgICB0eXBlID09IERQX0RTX1BPUlRfVFlQRV9IRE1JKQo+ICsJCWJwYyA9IDg7Cj4g Kwo+ICsJLyogQXMgb2YgRFAgaW50ZXJvcCB2MS4xYSBvbmx5IFZHQSBkZWZpbmVzIGFkZGl0aW9u YWwgZGV0YWlsICovCj4gKwlpZiAodHlwZSAhPSBEUF9EU19QT1JUX1RZUEVfVkdBIHx8Cj4gKwkg ICAgIShkcGNkW0RQX0RPV05TVFJFQU1QT1JUX1BSRVNFTlRdICYgRFBfREVUQUlMRURfQ0FQX0lO Rk9fQVZBSUxBQkxFKSkKPiArCQlyZXR1cm4gYnBjOwo+ICsKPiArCS8qIFZHQSB3aXRoIERQX0RF VEFJTEVEX0NBUF9JTkZPX0FWQUlMQUJMRSBwcm92aWRlcyBicGMgaW5mbyAqLwo+ICsJc3dpdGNo IChpbnRlbF9kcC0+ZG93bnN0cmVhbV9wb3J0c1syXSAmIERQX0RTX1ZHQV9NQVhfQlBDX01BU0sp IHsKPiArCWNhc2UgRFBfRFNfVkdBXzhCUEM6Cj4gKwkJcmV0dXJuIDg7Cj4gKwljYXNlIERQX0RT X1ZHQV8xMEJQQzoKPiArCQlyZXR1cm4gMTA7Cj4gKwljYXNlIERQX0RTX1ZHQV8xMkJQQzoKPiAr CQlyZXR1cm4gMTI7Cj4gKwljYXNlIERQX0RTX1ZHQV8xNkJQQzoKPiArCQlyZXR1cm4gMTY7Cj4g Kwl9Cj4gKwo+ICsJcmV0dXJuIGJwYzsKPiArfQo+IGRpZmYgLS1naXQgYS9kcml2ZXJzL2dwdS9k cm0vaTkxNS9pbnRlbF9kcnYuaCBiL2RyaXZlcnMvZ3B1L2RybS9pOTE1L2ludGVsX2Rydi5oCj4g aW5kZXggMzE1Yzk3MS4uYmRjOTc3YyAxMDA2NDQKPiAtLS0gYS9kcml2ZXJzL2dwdS9kcm0vaTkx NS9pbnRlbF9kcnYuaAo+ICsrKyBiL2RyaXZlcnMvZ3B1L2RybS9pOTE1L2ludGVsX2Rydi5oCj4g QEAgLTEzMDYsNiArMTMwNiw3IEBAIHZvaWQgaW50ZWxfZWRwX3BhbmVsX29mZihzdHJ1Y3QgaW50 ZWxfZHAgKmludGVsX2RwKTsKPiAgdm9pZCBpbnRlbF9kcF9hZGRfcHJvcGVydGllcyhzdHJ1Y3Qg aW50ZWxfZHAgKmludGVsX2RwLCBzdHJ1Y3QgZHJtX2Nvbm5lY3RvciAqY29ubmVjdG9yKTsKPiAg dm9pZCBpbnRlbF9kcF9tc3Rfc3VzcGVuZChzdHJ1Y3QgZHJtX2RldmljZSAqZGV2KTsKPiAgdm9p ZCBpbnRlbF9kcF9tc3RfcmVzdW1lKHN0cnVjdCBkcm1fZGV2aWNlICpkZXYpOwo+ICtpbnQgaW50 ZWxfZHBfc2lua19icGMoc3RydWN0IGRybV9jb25uZWN0b3IgKmNvbm5lY3Rvcik7Cj4gIGludCBp bnRlbF9kcF9tYXhfbGlua19yYXRlKHN0cnVjdCBpbnRlbF9kcCAqaW50ZWxfZHApOwo+ICBpbnQg aW50ZWxfZHBfcmF0ZV9zZWxlY3Qoc3RydWN0IGludGVsX2RwICppbnRlbF9kcCwgaW50IHJhdGUp Owo+ICB2b2lkIGludGVsX2RwX2hvdF9wbHVnKHN0cnVjdCBpbnRlbF9lbmNvZGVyICppbnRlbF9l bmNvZGVyKTsKPiAtLSAKPiAyLjcuMAo+IAoKLS0gCkRhbmllbCBWZXR0ZXIKU29mdHdhcmUgRW5n aW5lZXIsIEludGVsIENvcnBvcmF0aW9uCmh0dHA6Ly9ibG9nLmZmd2xsLmNoCl9fX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fCmRyaS1kZXZlbCBtYWlsaW5nIGxp c3QKZHJpLWRldmVsQGxpc3RzLmZyZWVkZXNrdG9wLm9yZwpodHRwczovL2xpc3RzLmZyZWVkZXNr dG9wLm9yZy9tYWlsbWFuL2xpc3RpbmZvL2RyaS1kZXZlbAo=