From mboxrd@z Thu Jan 1 00:00:00 1970 From: Lyude Paul Subject: Re: [PATCH 1/2] drm/dp/mst: Sideband message transaction to power up/down nodes Date: Wed, 06 Sep 2017 11:40:46 -0400 Message-ID: <1504712446.5213.1.camel@redhat.com> References: <20170906012634.3975-1-dhinakaran.pandiyan@intel.com> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: In-Reply-To: <20170906012634.3975-1-dhinakaran.pandiyan@intel.com> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" To: Dhinakaran Pandiyan , intel-gfx@lists.freedesktop.org Cc: dri-devel@lists.freedesktop.org List-Id: intel-gfx@lists.freedesktop.org T24gVHVlLCAyMDE3LTA5LTA1IGF0IDE4OjI2IC0wNzAwLCBEaGluYWthcmFuIFBhbmRpeWFuIHdy b3RlOgo+IFRoZSBQT1dFUl9ET1dOX1BIWSBhbmQgUE9XRVJfVVBfUEhZIHNpZGViYW5kIG1lc3Nh Z2UgdHJhbnNhY3Rpb25zCj4gYWxsb3cKPiB0aGUgc291cmNlIHRvIHJlcWVzdCBhbnkgbm9kZSBp biBhIG1zdCBwYXRoIG9yIGEgd2hvbGUgcGF0aCB0byBiZQo+IHBvd2VyZWQgZG93biBvciB1cC4g VGhpcyBhbGxvd3MgZHJpdmVycyB0byB0YXJnZXQgYSBzcGVjaWZpYyBzaW5rIGluCj4gdGhlCj4g TVNUIHRvcG9sb2d5LCBhbiBpbXByb3ZlbWVudCBvdmVyIGp1c3QgcG93ZXIgbWFuYWdpbmcgdGhl IGltZWRpYXRlCj4gZG93bnN0cmVhbSBkZXZpY2UuIFNlY29uZGx5LCBzaW5jZSB0aGUgcmVxdWVz dC1yZXBseSBwcm90b2NvbCB3YWl0cwo+IGZvciBhbgo+IEFDSywgd2UgY2FuIGJlIHN1cmUgdGhh dCBhIGRvd25zdHJlYW0gc2luayBoYXMgZW5vdWdoIHRpbWUgdG8gcmVzcG9uZAo+IHRvIGEKPiBw b3dlciB1cC9kb3duIHJlcXVlc3QuCj4gCj4gQ2M6IEx5dWRlIDxseXVkZUByZWRoYXQuY29tPgo+ IENjOiBWaWxsZSBTeXJqw6Rsw6QgPHZpbGxlLnN5cmphbGFAbGludXguaW50ZWwuY29tPgo+IENj OiBIYXJyeSBXZW50bGFuZCA8aGFycnkud2VudGxhbmRAYW1kLmNvbT4KPiBTaWduZWQtb2ZmLWJ5 OiBEaGluYWthcmFuIFBhbmRpeWFuIDxkaGluYWthcmFuLnBhbmRpeWFuQGludGVsLmNvbT4KPiAt LS0KPiAgZHJpdmVycy9ncHUvZHJtL2RybV9kcF9tc3RfdG9wb2xvZ3kuYyB8IDczCj4gKysrKysr KysrKysrKysrKysrKysrKysrKysrKysrKysrKysKPiAgaW5jbHVkZS9kcm0vZHJtX2RwX21zdF9o ZWxwZXIuaCAgICAgICB8ICAyICsKPiAgMiBmaWxlcyBjaGFuZ2VkLCA3NSBpbnNlcnRpb25zKCsp Cj4gCj4gZGlmZiAtLWdpdCBhL2RyaXZlcnMvZ3B1L2RybS9kcm1fZHBfbXN0X3RvcG9sb2d5LmMK PiBiL2RyaXZlcnMvZ3B1L2RybS9kcm1fZHBfbXN0X3RvcG9sb2d5LmMKPiBpbmRleCA0MWI0OTJm OTk5NTUuLmE5ZjEyNzA4YTA0NiAxMDA2NDQKPiAtLS0gYS9kcml2ZXJzL2dwdS9kcm0vZHJtX2Rw X21zdF90b3BvbG9neS5jCj4gKysrIGIvZHJpdmVycy9ncHUvZHJtL2RybV9kcF9tc3RfdG9wb2xv Z3kuYwo+IEBAIC0yOTQsNiArMjk0LDEyIEBAIHN0YXRpYyB2b2lkIGRybV9kcF9lbmNvZGVfc2lk ZWJhbmRfcmVxKHN0cnVjdAo+IGRybV9kcF9zaWRlYmFuZF9tc2dfcmVxX2JvZHkgKnJlcSwKPiAg CQltZW1jcHkoJmJ1ZltpZHhdLCByZXEtPnUuaTJjX3dyaXRlLmJ5dGVzLCByZXEtCj4gPnUuaTJj X3dyaXRlLm51bV9ieXRlcyk7Cj4gIAkJaWR4ICs9IHJlcS0+dS5pMmNfd3JpdGUubnVtX2J5dGVz Owo+ICAJCWJyZWFrOwo+ICsKPiArCWNhc2UgRFBfUE9XRVJfRE9XTl9QSFk6Cj4gKwljYXNlIERQ X1BPV0VSX1VQX1BIWToKPiArCQlidWZbaWR4XSA9IChyZXEtPnUucG9ydF9udW0ucG9ydF9udW1i ZXIgJiAweGYpIDw8IDQ7Cj4gKwkJaWR4Kys7Cj4gKwkJYnJlYWs7Cj4gIAl9Cj4gIAlyYXctPmN1 cl9sZW4gPSBpZHg7Cj4gIH0KPiBAQCAtNTM4LDYgKzU0NCwyMiBAQCBzdGF0aWMgYm9vbAo+IGRy bV9kcF9zaWRlYmFuZF9wYXJzZV9xdWVyeV9wYXlsb2FkX2FjayhzdHJ1Y3QgZHJtX2RwX3NpZGVi YW5kX21zZ19yCj4gIAlyZXR1cm4gZmFsc2U7Cj4gIH0KPiAgCj4gKwo+ICtzdGF0aWMgYm9vbCBk cm1fZHBfc2lkZWJhbmRfcGFyc2VfcG93ZXJfdXBkb3duX3BoeV9hY2soc3RydWN0Cj4gZHJtX2Rw X3NpZGViYW5kX21zZ19yeCAqcmF3LAo+ICsJCQkJCQkgICAgICAgc3RydWN0Cj4gZHJtX2RwX3Np ZGViYW5kX21zZ19yZXBseV9ib2R5ICpyZXBtc2cpCj4gK3sKPiArCWludCBpZHggPSAxOwo+ICsK PiArCXJlcG1zZy0+dS5wb3J0X251bWJlci5wb3J0X251bWJlciA9IChyYXctPm1zZ1tpZHhdID4+ IDQpICYKPiAweGY7Cj4gKwlpZHgrKzsKPiArCWlmIChpZHggPiByYXctPmN1cmxlbikgewo+ICsJ CURSTV9ERUJVR19LTVMoInBvd2VyIHVwL2Rvd24gcGh5IHBhcnNlIGxlbmd0aCBmYWlsCj4gJWQg JWRcbiIsCj4gKwkJCSAgICAgIGlkeCwgcmF3LT5jdXJsZW4pOwo+ICsJCXJldHVybiBmYWxzZTsK PiArCX0KPiArCXJldHVybiB0cnVlOwo+ICt9Cj4gKwo+ICBzdGF0aWMgYm9vbCBkcm1fZHBfc2lk ZWJhbmRfcGFyc2VfcmVwbHkoc3RydWN0Cj4gZHJtX2RwX3NpZGViYW5kX21zZ19yeCAqcmF3LAo+ ICAJCQkJCXN0cnVjdAo+IGRybV9kcF9zaWRlYmFuZF9tc2dfcmVwbHlfYm9keSAqbXNnKQo+ICB7 Cj4gQEAgLTU2Nyw2ICs1ODksOSBAQCBzdGF0aWMgYm9vbCBkcm1fZHBfc2lkZWJhbmRfcGFyc2Vf cmVwbHkoc3RydWN0Cj4gZHJtX2RwX3NpZGViYW5kX21zZ19yeCAqcmF3LAo+ICAJCXJldHVybgo+ IGRybV9kcF9zaWRlYmFuZF9wYXJzZV9lbnVtX3BhdGhfcmVzb3VyY2VzX2FjayhyYXcsIG1zZyk7 Cj4gIAljYXNlIERQX0FMTE9DQVRFX1BBWUxPQUQ6Cj4gIAkJcmV0dXJuCj4gZHJtX2RwX3NpZGVi YW5kX3BhcnNlX2FsbG9jYXRlX3BheWxvYWRfYWNrKHJhdywgbXNnKTsKPiArCWNhc2UgRFBfUE9X RVJfRE9XTl9QSFk6Cj4gKwljYXNlIERQX1BPV0VSX1VQX1BIWToKPiArCQlyZXR1cm4KPiBkcm1f ZHBfc2lkZWJhbmRfcGFyc2VfcG93ZXJfdXBkb3duX3BoeV9hY2socmF3LCBtc2cpOwo+ICAJZGVm YXVsdDoKPiAgCQlEUk1fRVJST1IoIkdvdCB1bmtub3duIHJlcGx5IDB4JTAyeFxuIiwgbXNnLQo+ ID5yZXFfdHlwZSk7Cj4gIAkJcmV0dXJuIGZhbHNlOwo+IEBAIC02OTMsNiArNzE4LDIyIEBAIHN0 YXRpYyBpbnQgYnVpbGRfYWxsb2NhdGVfcGF5bG9hZChzdHJ1Y3QKPiBkcm1fZHBfc2lkZWJhbmRf bXNnX3R4ICptc2csIGludCBwb3J0X24KPiAgCXJldHVybiAwOwo+ICB9Cj4gIAo+ICtzdGF0aWMg aW50IGJ1aWxkX3Bvd2VyX3VwZG93bl9waHkoc3RydWN0IGRybV9kcF9zaWRlYmFuZF9tc2dfdHgK PiAqbXNnLAo+ICsJCQkJICBpbnQgcG9ydF9udW0sIGJvb2wgcG93ZXJfdXApCj4gK3sKPiArCXN0 cnVjdCBkcm1fZHBfc2lkZWJhbmRfbXNnX3JlcV9ib2R5IHJlcTsKPiArCj4gKwlpZiAocG93ZXJf dXApCj4gKwkJcmVxLnJlcV90eXBlID0gRFBfUE9XRVJfVVBfUEhZOwo+ICsJZWxzZQo+ICsJCXJl cS5yZXFfdHlwZSA9IERQX1BPV0VSX0RPV05fUEhZOwo+ICsKPiArCXJlcS51LnBvcnRfbnVtLnBv cnRfbnVtYmVyID0gcG9ydF9udW07Cj4gKwlkcm1fZHBfZW5jb2RlX3NpZGViYW5kX3JlcSgmcmVx LCBtc2cpOwo+ICsJbXNnLT5wYXRoX21zZyA9IHRydWU7Cj4gKwlyZXR1cm4gMDsKPiArfQo+ICsK PiAgc3RhdGljIGludCBkcm1fZHBfbXN0X2Fzc2lnbl9wYXlsb2FkX2lkKHN0cnVjdAo+IGRybV9k cF9tc3RfdG9wb2xvZ3lfbWdyICptZ3IsCj4gIAkJCQkJc3RydWN0IGRybV9kcF92Y3BpICp2Y3Bp KQo+ICB7Cj4gQEAgLTE3MjQsNiArMTc2NSwzOCBAQCBzdGF0aWMgaW50IGRybV9kcF9wYXlsb2Fk X3NlbmRfbXNnKHN0cnVjdAo+IGRybV9kcF9tc3RfdG9wb2xvZ3lfbWdyICptZ3IsCj4gIAlyZXR1 cm4gcmV0Owo+ICB9Cj4gIAo+ICtpbnQgZHJtX2RwX3NlbmRfcG93ZXJfdXBkb3duX3BoeShzdHJ1 Y3QgZHJtX2RwX21zdF90b3BvbG9neV9tZ3IKPiAqbWdyLAo+ICsJCQkJIHN0cnVjdCBkcm1fZHBf bXN0X3BvcnQgKnBvcnQsIGJvb2wKPiBwb3dlcl91cCkKPiArewo+ICsJc3RydWN0IGRybV9kcF9z aWRlYmFuZF9tc2dfdHggKnR4bXNnOwo+ICsJaW50IGxlbiwgcmV0Owo+ICsKPiArCXR4bXNnID0g a3phbGxvYyhzaXplb2YoKnR4bXNnKSwgR0ZQX0tFUk5FTCk7Cj4gKwlpZiAoIXR4bXNnKQo+ICsJ CXJldHVybiAtRU5PTUVNOwo+ICsKPiArCXBvcnQgPSBkcm1fZHBfZ2V0X3ZhbGlkYXRlZF9wb3J0 X3JlZihtZ3IsIHBvcnQpOwo+ICsJaWYgKCFwb3J0KQo+ICsJCXJldHVybiAtRUlOVkFMOwppZiAo IXBvcnQpLCB0aGVuIHlvdSBsZWFrIG1lbW9yeSBieSBub3QgZnJlZWluZyB0eG1zZwo+ICsKPiAr CXR4bXNnLT5kc3QgPSBwb3J0LT5wYXJlbnQ7Cj4gKwlsZW4gPSBidWlsZF9wb3dlcl91cGRvd25f cGh5KHR4bXNnLCBwb3J0LT5wb3J0X251bSwKPiBwb3dlcl91cCk7Cj4gKwlkcm1fZHBfcXVldWVf ZG93bl90eChtZ3IsIHR4bXNnKTsKPiArCj4gKwlyZXQgPSBkcm1fZHBfbXN0X3dhaXRfdHhfcmVw bHkocG9ydC0+cGFyZW50LCB0eG1zZyk7Cj4gKwlpZiAocmV0ID4gMCkgewo+ICsJCWlmICh0eG1z Zy0+cmVwbHkucmVwbHlfdHlwZSA9PSAxKQo+ICsJCQlyZXQgPSAtRUlOVkFMOwo+ICsJCWVsc2UK PiArCQkJcmV0ID0gMDsKPiArCX0KPiArCWtmcmVlKHR4bXNnKTsKPiArCWRybV9kcF9wdXRfcG9y dChwb3J0KTsKPiArCj4gKwlyZXR1cm4gMDsKPiArfQo+ICtFWFBPUlRfU1lNQk9MKGRybV9kcF9z ZW5kX3Bvd2VyX3VwZG93bl9waHkpOwo+ICsKPiAgc3RhdGljIGludCBkcm1fZHBfY3JlYXRlX3Bh eWxvYWRfc3RlcDEoc3RydWN0Cj4gZHJtX2RwX21zdF90b3BvbG9neV9tZ3IgKm1nciwKPiAgCQkJ CSAgICAgICBpbnQgaWQsCj4gIAkJCQkgICAgICAgc3RydWN0IGRybV9kcF9wYXlsb2FkCj4gKnBh eWxvYWQpCj4gZGlmZiAtLWdpdCBhL2luY2x1ZGUvZHJtL2RybV9kcF9tc3RfaGVscGVyLmgKPiBi L2luY2x1ZGUvZHJtL2RybV9kcF9tc3RfaGVscGVyLmgKPiBpbmRleCBkNTVhYmI3NWYyOWEuLjdm NzhkMjZhMDc2NiAxMDA2NDQKPiAtLS0gYS9pbmNsdWRlL2RybS9kcm1fZHBfbXN0X2hlbHBlci5o Cj4gKysrIGIvaW5jbHVkZS9kcm0vZHJtX2RwX21zdF9oZWxwZXIuaAo+IEBAIC02MzEsNSArNjMx LDcgQEAgaW50IGRybV9kcF9hdG9taWNfZmluZF92Y3BpX3Nsb3RzKHN0cnVjdAo+IGRybV9hdG9t aWNfc3RhdGUgKnN0YXRlLAo+ICBpbnQgZHJtX2RwX2F0b21pY19yZWxlYXNlX3ZjcGlfc2xvdHMo c3RydWN0IGRybV9hdG9taWNfc3RhdGUgKnN0YXRlLAo+ICAJCQkJICAgICBzdHJ1Y3QgZHJtX2Rw X21zdF90b3BvbG9neV9tZ3IKPiAqbWdyLAo+ICAJCQkJICAgICBpbnQgc2xvdHMpOwo+ICtpbnQg ZHJtX2RwX3NlbmRfcG93ZXJfdXBkb3duX3BoeShzdHJ1Y3QgZHJtX2RwX21zdF90b3BvbG9neV9t Z3IKPiAqbWdyLAo+ICsJCQkJIHN0cnVjdCBkcm1fZHBfbXN0X3BvcnQgKnBvcnQsIGJvb2wKPiBw b3dlcl91cCk7Cj4gIAo+ICAjZW5kaWYKX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f X19fX19fX19fX19fX18KZHJpLWRldmVsIG1haWxpbmcgbGlzdApkcmktZGV2ZWxAbGlzdHMuZnJl ZWRlc2t0b3Aub3JnCmh0dHBzOi8vbGlzdHMuZnJlZWRlc2t0b3Aub3JnL21haWxtYW4vbGlzdGlu Zm8vZHJpLWRldmVsCg==