From mboxrd@z Thu Jan 1 00:00:00 1970 From: Andy Shevchenko Subject: Re: [PATCH v4 4/5] i2c: designware-baytrail: Disallow the CPU to enter C6 or C7 while holding the punit semaphore Date: Tue, 13 Dec 2016 11:56:16 +0200 Message-ID: <1481622976.7188.60.camel@linux.intel.com> References: <20161212215612.9262-1-hdegoede@redhat.com> <20161212215612.9262-4-hdegoede@redhat.com> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: In-Reply-To: <20161212215612.9262-4-hdegoede@redhat.com> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" To: Hans de Goede , Jarkko Nikula , Wolfram Sang , Len Brown Cc: Takashi Iwai , "russianneuromancer @ ya . ru" , intel-gfx , linux-i2c@vger.kernel.org, Mika Westerberg List-Id: linux-i2c@vger.kernel.org T24gTW9uLCAyMDE2LTEyLTEyIGF0IDIyOjU2ICswMTAwLCBIYW5zIGRlIEdvZWRlIHdyb3RlOgo+ IE9uIG15IGNoZXJyeXRyYWlsIHRhYmxldCB3aXRoIGF4cDI4OCBwbWljLCBqdXN0IGRvaW5nIGEg YnVuY2ggb2YKPiByZXBlYXRlZAo+IHJlYWRzIGZyb20gdGhlIHBtaWMsIGUuZy4gImkyY2R1bXAg LXkgMTQgMHgzNCIgd291bGQgbG9va3VwIHRoZSB0YWJsZXQKPiBpbgo+IDEgLSAzIHJ1bnMgZ3Vh cmFudGVlZC4KPiAKPiBUaGlzIHNlZW1zIHRvIGJlIGNhdXNlcyBieSB0aGUgY3B1IHRyeWluZyB0 byBlbnRlciBDNiBvciBDNyB3aGlsZSB3ZQo+IGhvbGQKPiB0aGUgcHVuaXQgYnVzIHNlbWFwaG9y ZSwgYXQgd2hpY2ggcG9pbnQgZXZlcnl0aGluZyBqdXN0IGhhbmdzLgo+IAo+IEF2b2lkIHRoaXMg YnkgZGlzYWxsb3dpbmcgdGhlIENQVSB0byBlbnRlciBDNiBvciBDNyBiZWZvcmUgYWNxdWlyaW5n Cj4gdGhlCj4gcHVuaXQgYnVzIHNlbWFwaG9yZS4KPiAKCkp1c3QgYSBuaXRwaWNrIGZvciBhYmJy ZXZpYXRpb25zOiBwbWljIC0+IFBNSUMsIHB1bml0IC0+IFAtVW5pdCwgYnV0IEknbQpva2F5IHdp dGggdGhlIGNvbnRlbnRzIHdoaWNoIGlzIG1vcmUgaW1wb3J0YW50LgoKUmV2aWV3ZWQtYnk6IEFu ZHkgU2hldmNoZW5rbyA8YW5kcml5LnNoZXZjaGVua29AbGludXguaW50ZWwuY29tPgoKPiBCdWdM aW5rOiBodHRwczovL2J1Z3ppbGxhLmtlcm5lbC5vcmcvc2hvd19idWcuY2dpP2lkPTEwOTA1MQoK V2hhdCB3b3VsZCBiZSBnb29kIGlzIHRvIGhhdmUgY29tbWVudHMgLyB0YWdzIGZyb20gTGVuIGFu ZCBWaWxsZS4KCj4gU2lnbmVkLW9mZi1ieTogSGFucyBkZSBHb2VkZSA8aGRlZ29lZGVAcmVkaGF0 LmNvbT4KPiBUZXN0ZWQtYnk6IFRha2FzaGkgSXdhaSA8dGl3YWlAc3VzZS5kZT4KPiAtLS0KPiBD aGFuZ2VzIGluIHYyOgo+IC1OZXcgcGF0Y2ggaW4gdjIgb2YgdGhpcyBzZXQKPiBDaGFuZ2VzIGlu IHYzOgo+IC1DaGFuZ2UgY29tbWl0IG1lc3NhZ2UgYW5kIGNvbW1lbnQgaW4gdGhlIGNvZGUgZnJv bSAiZm9yY2UgdGhlIENQVSB0bwo+IEMxIgo+IMKgdG8gIkRpc2FsbG93IHRoZSBDUFUgdG8gZW50 ZXIgQzYgb3IgQzciLCBhcyB0aGUgQ1BVIG1heSBzdGlsbCBiZSBpbgo+IGVpdGhlcgo+IMKgQzAg b3IgQzEgd2l0aCB0aGUgcmVxdWVzdCBwbV9xb3MKPiBDaGFuZ2VzIGluIHY0Ogo+IC1SZW5hbWUg aTJjX2R3X2V2YWxfbG9ja19zdXBwb3J0IHRvIGkyY19kd19wcm9iZV9sb2NrX3N1cHBvcnQgc28g dGhhdAo+IHdlIGNhbgo+IMKgYWRkIGEgbWF0Y2hpbmcgaTJjX2R3X3JlbW92ZV9sb2NrX3N1cHBv cnQgY2xlYW51cCBmdW5jdGlvbgo+IC1Nb3ZlIHFtX3BvcyByZW1vdmFsIHRvIG5ldyBpMmNfZHdf cmVtb3ZlX2xvY2tfc3VwcG9ydCBmdW5jdGlvbgo+IC1Nb3ZlIHBtX3Fvc19hZGRfcmVxdWVzdCB0 byB0aGUgZW5kIG9mIGkyY19kd19wcm9iZV9sb2NrX3N1cHBvcnQKPiAtLS0KPiDCoGRyaXZlcnMv aTJjL2J1c3Nlcy9pMmMtZGVzaWdud2FyZS1iYXl0cmFpbC5jIHwgMjEKPiArKysrKysrKysrKysr KysrKysrKy0KPiDCoGRyaXZlcnMvaTJjL2J1c3Nlcy9pMmMtZGVzaWdud2FyZS1jb3JlLmjCoMKg wqDCoMKgfMKgwqA5ICsrKysrKystLQo+IMKgZHJpdmVycy9pMmMvYnVzc2VzL2kyYy1kZXNpZ253 YXJlLXBsYXRkcnYuY8KgwqB8wqDCoDQgKysrLQo+IMKgMyBmaWxlcyBjaGFuZ2VkLCAzMCBpbnNl cnRpb25zKCspLCA0IGRlbGV0aW9ucygtKQo+IAo+IGRpZmYgLS1naXQgYS9kcml2ZXJzL2kyYy9i dXNzZXMvaTJjLWRlc2lnbndhcmUtYmF5dHJhaWwuYwo+IGIvZHJpdmVycy9pMmMvYnVzc2VzL2ky Yy1kZXNpZ253YXJlLWJheXRyYWlsLmMKPiBpbmRleCBjZjAyMjIyLi45NWQ3MDEzIDEwMDY0NAo+ IC0tLSBhL2RyaXZlcnMvaTJjL2J1c3Nlcy9pMmMtZGVzaWdud2FyZS1iYXl0cmFpbC5jCj4gKysr IGIvZHJpdmVycy9pMmMvYnVzc2VzL2kyYy1kZXNpZ253YXJlLWJheXRyYWlsLmMKPiBAQCAtMTYs NiArMTYsNyBAQAo+IMKgI2luY2x1ZGUgPGxpbnV4L2FjcGkuaD4KPiDCoCNpbmNsdWRlIDxsaW51 eC9pMmMuaD4KPiDCoCNpbmNsdWRlIDxsaW51eC9pbnRlcnJ1cHQuaD4KPiArI2luY2x1ZGUgPGxp bnV4L3BtX3Fvcy5oPgo+IMKgCj4gwqAjaW5jbHVkZSA8YXNtL2lvc2ZfbWJpLmg+Cj4gwqAKPiBA QCAtMzMsNiArMzQsMTMgQEAgc3RhdGljIGludCBnZXRfc2VtKHN0cnVjdCBkd19pMmNfZGV2ICpk ZXYsIHUzMgo+ICpzZW0pCj4gwqAJdTMyIGRhdGE7Cj4gwqAJaW50IHJldDsKPiDCoAo+ICsJLyoK PiArCcKgKiBEaXNhbGxvdyB0aGUgQ1BVIHRvIGVudGVyIEM2IG9yIEM3IHN0YXRlLCBlbnRlcmlu ZyB0aGVzZQo+IHN0YXRlcwo+ICsJwqAqIHJlcXVpcmVzIHRoZSBwdW5pdCB0byB0YWxrIHRvIHRo ZSBwbWljIGFuZCBpZiB0aGlzIGhhcHBlbnMKPiB3aGlsZQo+ICsJwqAqIHdlJ3JlIGhvbGRpbmcg dGhlIHNlbWFwaG9yZSwgdGhlIFNvQyBoYW5ncy4KPiArCcKgKi8KPiArCXBtX3Fvc191cGRhdGVf cmVxdWVzdCgmZGV2LT5wbV9xb3MsIDApOwo+ICsKPiDCoAlyZXQgPSBpb3NmX21iaV9yZWFkKEJU X01CSV9VTklUX1BNQywgTUJJX1JFR19SRUFELAo+IFBVTklUX1NFTUFQSE9SRSwgJmRhdGEpOwo+ IMKgCWlmIChyZXQpIHsKPiDCoAkJZGV2X2VycihkZXYtPmRldiwgImlvc2YgZmFpbGVkIHRvIHJl YWQgcHVuaXQKPiBzZW1hcGhvcmVcbiIpOwo+IEBAIC01Niw2ICs2NCw4IEBAIHN0YXRpYyB2b2lk IHJlc2V0X3NlbWFwaG9yZShzdHJ1Y3QgZHdfaTJjX2RldiAqZGV2KQo+IMKgCWRhdGEgJj0gflBV TklUX1NFTUFQSE9SRV9CSVQ7Cj4gwqAJaWYgKGlvc2ZfbWJpX3dyaXRlKEJUX01CSV9VTklUX1BN QywgTUJJX1JFR19XUklURSwKPiBQVU5JVF9TRU1BUEhPUkUsIGRhdGEpKQo+IMKgCQlkZXZfZXJy KGRldi0+ZGV2LCAiaW9zZiBmYWlsZWQgdG8gcmVzZXQgcHVuaXQKPiBzZW1hcGhvcmUgZHVyaW5n IHdyaXRlXG4iKTsKPiArCj4gKwlwbV9xb3NfdXBkYXRlX3JlcXVlc3QoJmRldi0+cG1fcW9zLCBQ TV9RT1NfREVGQVVMVF9WQUxVRSk7Cj4gwqB9Cj4gwqAKPiDCoHN0YXRpYyBpbnQgYmF5dHJhaWxf aTJjX2FjcXVpcmUoc3RydWN0IGR3X2kyY19kZXYgKmRldikKPiBAQCAtMTIxLDcgKzEzMSw3IEBA IHN0YXRpYyB2b2lkIGJheXRyYWlsX2kyY19yZWxlYXNlKHN0cnVjdCBkd19pMmNfZGV2Cj4gKmRl dikKPiDCoAkJamlmZmllc190b19tc2VjcyhqaWZmaWVzIC0gYWNxdWlyZWQpKTsKPiDCoH0KPiDC oAo+IC1pbnQgaTJjX2R3X2V2YWxfbG9ja19zdXBwb3J0KHN0cnVjdCBkd19pMmNfZGV2ICpkZXYp Cj4gK2ludCBpMmNfZHdfcHJvYmVfbG9ja19zdXBwb3J0KHN0cnVjdCBkd19pMmNfZGV2ICpkZXYp Cj4gwqB7Cj4gwqAJYWNwaV9zdGF0dXMgc3RhdHVzOwo+IMKgCXVuc2lnbmVkIGxvbmcgbG9uZyBz aGFyZWRfaG9zdCA9IDA7Cj4gQEAgLTE0OSw1ICsxNTksMTQgQEAgaW50IGkyY19kd19ldmFsX2xv Y2tfc3VwcG9ydChzdHJ1Y3QgZHdfaTJjX2Rldgo+ICpkZXYpCj4gwqAJZGV2LT5yZWxlYXNlX2xv Y2sgPSBiYXl0cmFpbF9pMmNfcmVsZWFzZTsKPiDCoAlkZXYtPnBtX3J1bnRpbWVfZGlzYWJsZWQg PSB0cnVlOwo+IMKgCj4gKwlwbV9xb3NfYWRkX3JlcXVlc3QoJmRldi0+cG1fcW9zLCBQTV9RT1Nf Q1BVX0RNQV9MQVRFTkNZLAo+ICsJCQnCoMKgwqBQTV9RT1NfREVGQVVMVF9WQUxVRSk7Cj4gKwo+ IMKgCXJldHVybiAwOwo+IMKgfQo+ICsKPiArdm9pZCBpMmNfZHdfcmVtb3ZlX2xvY2tfc3VwcG9y dChzdHJ1Y3QgZHdfaTJjX2RldiAqZGV2KQo+ICt7Cj4gKwlpZiAoZGV2LT5hY3F1aXJlX2xvY2sp Cj4gKwkJcG1fcW9zX3JlbW92ZV9yZXF1ZXN0KCZkZXYtPnBtX3Fvcyk7Cj4gK30KPiBkaWZmIC0t Z2l0IGEvZHJpdmVycy9pMmMvYnVzc2VzL2kyYy1kZXNpZ253YXJlLWNvcmUuaAo+IGIvZHJpdmVy cy9pMmMvYnVzc2VzL2kyYy1kZXNpZ253YXJlLWNvcmUuaAo+IGluZGV4IGZiMTQzZjUuLjg3MTk3 MGUgMTAwNjQ0Cj4gLS0tIGEvZHJpdmVycy9pMmMvYnVzc2VzL2kyYy1kZXNpZ253YXJlLWNvcmUu aAo+ICsrKyBiL2RyaXZlcnMvaTJjL2J1c3Nlcy9pMmMtZGVzaWdud2FyZS1jb3JlLmgKPiBAQCAt MjIsNiArMjIsNyBAQAo+IMKgICoKPiDCoCAqLwo+IMKgCj4gKyNpbmNsdWRlIDxsaW51eC9wbV9x b3MuaD4KPiDCoAo+IMKgI2RlZmluZSBEV19JQ19DT05fTUFTVEVSCQkweDEKPiDCoCNkZWZpbmUg RFdfSUNfQ09OX1NQRUVEX1NURAkJMHgyCj4gQEAgLTY3LDYgKzY4LDcgQEAKPiDCoCAqIEBmcF9s Y250OiBmYXN0IHBsdXMgTENOVCB2YWx1ZQo+IMKgICogQGhzX2hjbnQ6IGhpZ2ggc3BlZWQgSENO VCB2YWx1ZQo+IMKgICogQGhzX2xjbnQ6IGhpZ2ggc3BlZWQgTENOVCB2YWx1ZQo+ICsgKiBAcG1f cW9zOiBwbV9xb3NfcmVxdWVzdCB1c2VkIHdoaWxlIGhvbGRpbmcgYSBoYXJkd2FyZSBsb2NrIG9u IHRoZQo+IGJ1cwo+IMKgICogQGFjcXVpcmVfbG9jazogZnVuY3Rpb24gdG8gYWNxdWlyZSBhIGhh cmR3YXJlIGxvY2sgb24gdGhlIGJ1cwo+IMKgICogQHJlbGVhc2VfbG9jazogZnVuY3Rpb24gdG8g cmVsZWFzZSBhIGhhcmR3YXJlIGxvY2sgb24gdGhlIGJ1cwo+IMKgICogQHBtX3J1bnRpbWVfZGlz YWJsZWQ6IHRydWUgaWYgcG0gcnVudGltZSBpcyBkaXNhYmxlZAo+IEBAIC0xMTQsNiArMTE2LDcg QEAgc3RydWN0IGR3X2kyY19kZXYgewo+IMKgCXUxNgkJCWZwX2xjbnQ7Cj4gwqAJdTE2CQkJaHNf aGNudDsKPiDCoAl1MTYJCQloc19sY250Owo+ICsJc3RydWN0IHBtX3Fvc19yZXF1ZXN0CXBtX3Fv czsKPiDCoAlpbnQJCQkoKmFjcXVpcmVfbG9jaykoc3RydWN0IGR3X2kyY19kZXYKPiAqZGV2KTsK PiDCoAl2b2lkCQkJKCpyZWxlYXNlX2xvY2spKHN0cnVjdCBkd19pMmNfZGV2Cj4gKmRldik7Cj4g wqAJYm9vbAkJCXBtX3J1bnRpbWVfZGlzYWJsZWQ7Cj4gQEAgLTEzMSw3ICsxMzQsOSBAQCBleHRl cm4gdTMyIGkyY19kd19yZWFkX2NvbXBfcGFyYW0oc3RydWN0Cj4gZHdfaTJjX2RldiAqZGV2KTsK PiDCoGV4dGVybiBpbnQgaTJjX2R3X3Byb2JlKHN0cnVjdCBkd19pMmNfZGV2ICpkZXYpOwo+IMKg Cj4gwqAjaWYgSVNfRU5BQkxFRChDT05GSUdfSTJDX0RFU0lHTldBUkVfQkFZVFJBSUwpCj4gLWV4 dGVybiBpbnQgaTJjX2R3X2V2YWxfbG9ja19zdXBwb3J0KHN0cnVjdCBkd19pMmNfZGV2ICpkZXYp Owo+ICtleHRlcm4gaW50IGkyY19kd19wcm9iZV9sb2NrX3N1cHBvcnQoc3RydWN0IGR3X2kyY19k ZXYgKmRldik7Cj4gK2V4dGVybiB2b2lkIGkyY19kd19yZW1vdmVfbG9ja19zdXBwb3J0KHN0cnVj dCBkd19pMmNfZGV2ICpkZXYpOwo+IMKgI2Vsc2UKPiAtc3RhdGljIGlubGluZSBpbnQgaTJjX2R3 X2V2YWxfbG9ja19zdXBwb3J0KHN0cnVjdCBkd19pMmNfZGV2ICpkZXYpIHsKPiByZXR1cm4gMDsg fQo+ICtzdGF0aWMgaW5saW5lIGludCBpMmNfZHdfcHJvYmVfbG9ja19zdXBwb3J0KHN0cnVjdCBk d19pMmNfZGV2ICpkZXYpIHsKPiByZXR1cm4gMDsgfQo+ICtzdGF0aWMgaW5saW5lIHZvaWQgaTJj X2R3X3JlbW92ZV9sb2NrX3N1cHBvcnQoc3RydWN0IGR3X2kyY19kZXYgKmRldikKPiB7fQo+IMKg I2VuZGlmCj4gZGlmZiAtLWdpdCBhL2RyaXZlcnMvaTJjL2J1c3Nlcy9pMmMtZGVzaWdud2FyZS1w bGF0ZHJ2LmMKPiBiL2RyaXZlcnMvaTJjL2J1c3Nlcy9pMmMtZGVzaWdud2FyZS1wbGF0ZHJ2LmMK PiBpbmRleCA5N2EyY2ExLi5iMGE2NGEyIDEwMDY0NAo+IC0tLSBhL2RyaXZlcnMvaTJjL2J1c3Nl cy9pMmMtZGVzaWdud2FyZS1wbGF0ZHJ2LmMKPiArKysgYi9kcml2ZXJzL2kyYy9idXNzZXMvaTJj LWRlc2lnbndhcmUtcGxhdGRydi5jCj4gQEAgLTIxMCw3ICsyMTAsNyBAQCBzdGF0aWMgaW50IGR3 X2kyY19wbGF0X3Byb2JlKHN0cnVjdAo+IHBsYXRmb3JtX2RldmljZSAqcGRldikKPiDCoAkJcmV0 dXJuIC1FSU5WQUw7Cj4gwqAJfQo+IMKgCj4gLQlyID0gaTJjX2R3X2V2YWxfbG9ja19zdXBwb3J0 KGRldik7Cj4gKwlyID0gaTJjX2R3X3Byb2JlX2xvY2tfc3VwcG9ydChkZXYpOwo+IMKgCWlmIChy KQo+IMKgCQlyZXR1cm4gcjsKPiDCoAo+IEBAIC0yOTEsNiArMjkxLDggQEAgc3RhdGljIGludCBk d19pMmNfcGxhdF9yZW1vdmUoc3RydWN0Cj4gcGxhdGZvcm1fZGV2aWNlICpwZGV2KQo+IMKgCWlm ICghZGV2LT5wbV9ydW50aW1lX2Rpc2FibGVkKQo+IMKgCQlwbV9ydW50aW1lX2Rpc2FibGUoJnBk ZXYtPmRldik7Cj4gwqAKPiArCWkyY19kd19yZW1vdmVfbG9ja19zdXBwb3J0KGRldik7Cj4gKwo+ IMKgCXJldHVybiAwOwo+IMKgfQo+IMKgCgotLSAKQW5keSBTaGV2Y2hlbmtvIDxhbmRyaXkuc2hl dmNoZW5rb0BsaW51eC5pbnRlbC5jb20+CkludGVsIEZpbmxhbmQgT3kKX19fX19fX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX18KSW50ZWwtZ2Z4IG1haWxpbmcgbGlzdApJ bnRlbC1nZnhAbGlzdHMuZnJlZWRlc2t0b3Aub3JnCmh0dHBzOi8vbGlzdHMuZnJlZWRlc2t0b3Au b3JnL21haWxtYW4vbGlzdGluZm8vaW50ZWwtZ2Z4Cg==