From mboxrd@z Thu Jan 1 00:00:00 1970 From: Hans de Goede Subject: Re: [PATCH v2 13/13] drm/i915: Acquire P-Unit access when modifying P-Unit settings Date: Fri, 10 Feb 2017 11:19:52 +0100 Message-ID: <7a1a651c-a568-7d6a-5c29-db2783c73a66@redhat.com> References: <20170123210958.18410-1-hdegoede@redhat.com> <20170123210958.18410-14-hdegoede@redhat.com> <20170127135147.GS31595@intel.com> <64a4aef7-837f-059c-9be5-4a76602488be@redhat.com> <2eea197f-2485-5f93-1691-42a9a2e11267@redhat.com> <20170130131041.GM31595@intel.com> <20170130151144.GP31595@intel.com> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8"; Format="flowed" Content-Transfer-Encoding: base64 Return-path: In-Reply-To: <20170130151144.GP31595@intel.com> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" To: =?UTF-8?B?VmlsbGUgU3lyasOkbMOk?= Cc: Wolfram Sang , Takashi Iwai , "russianneuromancer @ ya . ru" , intel-gfx , linux-i2c@vger.kernel.org, Jarkko Nikula , dri-devel@lists.freedesktop.org, "H . Peter Anvin" , Daniel Vetter , Thomas Gleixner , Andy Shevchenko , Mika Westerberg , Len Brown List-Id: linux-i2c@vger.kernel.org SGksCgpPbiAzMC0wMS0xNyAxNjoxMSwgVmlsbGUgU3lyasOkbMOkIHdyb3RlOgo+IE9uIE1vbiwg SmFuIDMwLCAyMDE3IGF0IDA0OjAyOjE5UE0gKzAxMDAsIEhhbnMgZGUgR29lZGUgd3JvdGU6Cj4+ IEhpLAo+Pgo+PiBPbiAzMC0wMS0xNyAxNDoxMCwgVmlsbGUgU3lyasOkbMOkIHdyb3RlOgo+Pj4g T24gU2F0LCBKYW4gMjgsIDIwMTcgYXQgMDY6MTg6NDVQTSArMDEwMCwgSGFucyBkZSBHb2VkZSB3 cm90ZToKPj4+PiBIaSwKPj4+Pgo+Pj4+IE9uIDAxLzI4LzIwMTcgMDU6MjUgUE0sIEhhbnMgZGUg R29lZGUgd3JvdGU6Cj4+Pj4+IEhpLAo+Pj4+Pgo+Pj4+PiBPbiAwMS8yNy8yMDE3IDAyOjUxIFBN LCBWaWxsZSBTeXJqw6Rsw6Qgd3JvdGU6Cj4+Pj4+PiBPbiBNb24sIEphbiAyMywgMjAxNyBhdCAx MDowOTo1OFBNICswMTAwLCBIYW5zIGRlIEdvZWRlIHdyb3RlOgo+Pj4+Pj4+IE1ha2Ugc3VyZSB0 aGUgUC1Vbml0IG9yIHRoZSBQTUlDIGkyYyBidXMgaXMgbm90IGluIHVzZSB3aGVuIHdlIHNlbmQg YQo+Pj4+Pj4+IHJlcXVlc3QgdG8gdGhlIFAtVW5pdCBieSBjYWxsaW5nIGlvc2ZfbWJpX3B1bml0 X2FjcXVpcmUoKSAvIF9yZWxlYXNlKCkKPj4+Pj4+PiBhcm91bmQgUC1Vbml0IHdyaXRlIGFjY2Vz c2VzLgo+Pj4+Pj4KPj4+Pj4+IENhbid0IHdlIGp1c3Qgc3R1ZmYgdGhlIGNhbGxzIGludG8gdGhl IGFjdHVhbCBwdW5pdCB3cml0ZSBmdW5jdGlvbgo+Pj4+Pj4gcmF0aGVyIHRoYW4gc3ByaW5rbGlu ZyB0aGVtIGFsbCBvdmVyIHRoZSBwbGFjZT8KPj4+Pj4KPj4+Pj4gcHVuaXQgYWNjZXNzIGlzIGFj cXVpcmVkIGFjcm9zcyBzZWN0aW9ucyBsaWtlIHRoaXM6Cj4+Pj4+Cj4+Pj4+ICAgICAgICAgaW9z Zl9tYmlfcHVuaXRfYWNxdWlyZSgpOwo+Pj4+Pgo+Pj4+PiAgICAgICAgIHZhbCA9IHZsdl9wdW5p dF9yZWFkKGRldl9wcml2LCBQVU5JVF9SRUdfRFNQRlJFUSk7Cj4+Pj4+ICAgICAgICAgdmFsICY9 IH5EU1BGUkVRR1VBUl9NQVNLOwo+Pj4+PiAgICAgICAgIHZhbCB8PSAoY21kIDw8IERTUEZSRVFH VUFSX1NISUZUKTsKPj4+Pj4gICAgICAgICB2bHZfcHVuaXRfd3JpdGUoZGV2X3ByaXYsIFBVTklU X1JFR19EU1BGUkVRLCB2YWwpOwo+Pj4+PiAgICAgICAgIGlmICh3YWl0X2Zvcigodmx2X3B1bml0 X3JlYWQoZGV2X3ByaXYsIFBVTklUX1JFR19EU1BGUkVRKSAmCj4+Pj4+ICAgICAgICAgICAgICAg ICAgICAgICBEU1BGUkVRU1RBVF9NQVNLKSA9PSAoY21kIDw8IERTUEZSRVFTVEFUX1NISUZUKSwK Pj4+Pj4gICAgICAgICAgICAgICAgICAgICAgNTApKSB7Cj4+Pj4+ICAgICAgICAgICAgICAgICBE Uk1fRVJST1IoInRpbWVkIG91dCB3YWl0aW5nIGZvciBDRGNsayBjaGFuZ2VcbiIpOwo+Pj4+PiAg ICAgICAgIH0KPj4+Pj4gICAgICAgICBpb3NmX21iaV9wdW5pdF9yZWxlYXNlKCk7Cj4+Pj4+Cj4+ Pj4+IFdoZXJlIHdlIHdhbnQgdG8gd2FpdCBmb3IgdGhlIHJlcXVlc3RlZCBjaGFuZ2UgdG8gaGF2 ZSB0YWtlbgo+Pj4+PiBlZmZlY3QgYmVmb3JlIHJlbGVhc2luZyB0aGUgcHVuaXQuCj4+Pgo+Pj4g SG1tLiBUaGF0J3Mgc29tZXdoYXQgdW5mb3J0dW5hdGUuIEl0IGFsc28gaGlnaGxpZ2h0cyBhIHBy b2JsZW0gd2l0aCB0aGUKPj4+IHBhdGNoIHdydC4gUlBTLiBXZSBkb24ndCB3YWl0IGZvciB0aGUg R1BVIHRvIGFjdHVhbGx5IGNoYW5nZSBmcmVxdWVuY2llcwo+Pj4gaW4gc2V0X3JwcygpIGJlY2F1 c2UgdGhhdCB3b3VsZCBzbG93IHRoaW5ncyBkb3duIHRvbyBtdWNoLiBTbyBJIGhhdmUgdG8KPj4+ IHdvbmRlciBob3cgbXVjaCBsdWNrIGlzIG5lZWRlZCB0byBtYWtlIHRoaXMgd29ya2Fyb3VuZCBy ZWFsbHkgZWZmZWN0aXZlLgo+Pgo+PiBTbyB0aGUgaGlzdG9yeSBvZiB0aGlzIHBhdGNoLXNldCBp cyB0aGF0IEkgd3JvdGUgdGhpcyBwYXRjaCBiZWZvcmUKPj4gd3JpdGluZyB0aGUgcGF0Y2ggdG8g Z2V0IEZPUkNFV0FLRV9BTEwgYmVmb3JlIHRoZSBwbWljIGJ1cyBiZWNvbWVzCj4+IGFjdGl2ZSAo cGF0Y2ggMTIvMTMpLiBTaW5jZSBhIGxvdCBvZiB0ZXN0aW5nIHdhcyBkb25lIHdpdGggdGhpcwo+ PiBwYXRjaCBpbmNsdWRlZCBpbiB0aGUgcGF0Y2gtc2V0IGFuZCBzaW5jZSBpdCBzZWVtZWQgYSBn b29kIGlkZWEKPj4gcmVnYXJkbGVzcyAoZ2l2ZW4gbXkgZXhwZXJpZW5jZSB3aXRoIGFjY2Vzc2lu ZyB0aGUgcHVuaXQgdnMKPj4gcG1pYyBidXMgYWNjZXNzZXMpIEkgZGVjaWRlZCB0byBsZWF2ZSBp dCBpbi4KPj4KPj4gUG9zc2libHkganVzdCB0aGUgcGF0Y2ggdG8gZ2V0IEZPUkNFV0FLRV9BTEwg aXMgZW5vdWdoLCB0aGF0IG9uZQo+PiBhY3R1YWxseSBmaXhlZCB0aGluZ3MgZm9yIG1lLiBUaGF0 IGlzIGFsc28gd2h5IEkgbWFkZSB0aGlzIHRoZQo+PiBsYXN0IHBhdGNoIGluIHRoZSBzZXQuIEkg YXNrZWQgdGFnb3JlcmVkZHkgdG8gdGVzdCBoaXMgc3lzdGVtCj4+IHdpdGhvdXQgdGhpcyBwYXRj aCwgYnV0IGhlIGRpZCBub3QgZ2V0IGFyb3VuZCB0byB0aGF0Lgo+Pgo+PiBBZnRlciBhbGwgd2Ug ZG8gdGVsbCB0aGUgcHVuaXQgdG8gbm90IHRvdWNoIHRoZSBidXMgYnkgYWNxdWlyaW5nCj4+IHRo ZSBwbWljIGJ1cyBzZW1hcGhvcmUgZnJvbSBpMmMtZGVzaWd3YXJlLWJheXRyYWlsLmMsIHNvIG1h eWJlCj4+IGZvciBSUFMgZnJlcSBjaGFuZ2VzIGl0IGhvbm9ycyB0aGF0IGFuZCBwcm9wZXJseSB3 YWl0cy4gTWF5YmUgaXQKPj4gaG9ub3JzIHRoYXQgZm9yIGFsbCBwdW5pdCByZXF1ZXN0cyBpOTE1 IGRvZXMgYW5kIHRoZSBvbmx5IHJlYWwKPj4gcHJvYmxlbSBpcyB0aGUgZm9yY2V3YWtlIHN0dWZm ID8KPj4KPj4gSSBjYW4gdHJ5IHRvIGRyb3AgdGhpcyBwYXRjaCBmcm9tIG15IHF1ZXVlIGFuZCBy dW4gd2l0aG91dCBpdAo+PiBmb3IgYSB3aGlsZSBhbmQgc2VlIGlmIHRoaW5ncyBkb24ndCByZWdy ZXNzLiBBbmQgYWxzbyBhc2sKPj4gdGFnb3JlcmVkZHkgYWdhaW4gdG8gdGVzdCBoaXMgc3lzdGVt IHRoYXQgd2F5Lgo+Pgo+PiBEb2VzIHRoYXQgKGRyb3BwaW5nIHRoaXMgcGF0Y2ggZm9yIG5vdykg c291bmQgbGlrZSBhIGdvb2QgaWRlYT8KPgo+IE1vcmUgdGVzdCByZXN1bHRzIGNvdWxkbid0IGh1 cnQgYXQgbGVhc3QuCgpPaywgSSd2ZSBkb25lIGEgd2hvbGUgYnVuY2ggb2Ygc3VzcGVuZCArIHJl c3VtZSBjeWNsZXMgb24gbXkgY2h0CnRhYmxldCB3aXRoIHRoaXMgcGF0Y2ggZHJvcHBlZCBhbmQg dGhpbmdzIHN0aWxsIHdvcmsgZmluZQood2hlcmUgYXMgd2l0aG91dCB0aGUgZmlyc3QgMTIgcGF0 Y2hlcyBvZiB0aGlzIHBhdGNoLXNldCB0aGF0CiAgd2FzIGEgZ3VhcmVudGVlZCB3YXkgdG8gZ2V0 IGEgZm9yY2V3YWtlIHRpbWVvdXQgZm9sbG93ZWQgYnkKICBhIGxvY2t1cCkuCgpTbyBpdCBpbmRl ZWQgc2VlbXMgdGhpcyB0ZXN0IGlzIG5vdCBuZWNlc3NhcnkuIEknbGwgc2VuZCBhIHYzCndpdGgg dGhhdCBwYXRjaCBkcm9wcGVkLCBhcyB3ZWxsIGFzIHlvdXIgY29tbWVudHMgZm9yCnBhdGNoZXMg MTEgYW5kIDEyIGJlaW5nIGFkZHJlc3NlZC4KClJlZ2FyZHMsCgpIYW5zCgpfX19fX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fXwpJbnRlbC1nZnggbWFpbGluZyBsaXN0 CkludGVsLWdmeEBsaXN0cy5mcmVlZGVza3RvcC5vcmcKaHR0cHM6Ly9saXN0cy5mcmVlZGVza3Rv cC5vcmcvbWFpbG1hbi9saXN0aW5mby9pbnRlbC1nZngK