From mboxrd@z Thu Jan 1 00:00:00 1970 From: Peter Rosin Subject: Re: [v2,2/2] i2c: mux: pca954x: add property idle-state Date: Tue, 15 Oct 2019 13:59:54 +0000 Message-ID: References: <20191015044839.23746-1-biwen.li@nxp.com> <20191015044839.23746-2-biwen.li@nxp.com> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: In-Reply-To: <20191015044839.23746-2-biwen.li@nxp.com> Content-Language: en-US Content-ID: <90997459E3708A4DBB33589DD78BB078@eurprd02.prod.outlook.com> Sender: linux-kernel-owner@vger.kernel.org To: Biwen Li , "leoyang.li@nxp.com" , "robh+dt@kernel.org" , "mark.rutland@arm.com" Cc: "linux-i2c@vger.kernel.org" , "linux-kernel@vger.kernel.org" , "devicetree@vger.kernel.org" List-Id: linux-i2c@vger.kernel.org T24gMjAxOS0xMC0xNSAwNjo0OCwgQml3ZW4gTGkgd3JvdGU6DQo+IFRoaXMgYWRkcyBwcm9wZXJ0 eSBpZGxlLXN0YXRlDQo+IA0KPiBTaWduZWQtb2ZmLWJ5OiBCaXdlbiBMaSA8Yml3ZW4ubGlAbnhw LmNvbT4NCj4gLS0tDQo+IENoYW5nZSBpbiB2MjoNCj4gCS0gdXBkYXRlIHN1YmplY3QgYW5kIGRl c2NyaXB0aW9uDQo+IAktIGFkZCBwcm9wZXJ0eSBpZGxlLXN0YXRlDQo+IA0KPiAgZHJpdmVycy9p MmMvbXV4ZXMvaTJjLW11eC1wY2E5NTR4LmMgfCA0NyArKysrKysrKysrKysrKysrKystLS0tLS0t LS0tLQ0KPiAgMSBmaWxlIGNoYW5nZWQsIDMwIGluc2VydGlvbnMoKyksIDE3IGRlbGV0aW9ucygt KQ0KPiANCj4gZGlmZiAtLWdpdCBhL2RyaXZlcnMvaTJjL211eGVzL2kyYy1tdXgtcGNhOTU0eC5j IGIvZHJpdmVycy9pMmMvbXV4ZXMvaTJjLW11eC1wY2E5NTR4LmMNCj4gaW5kZXggOTIzYWEzYTVh M2RjLi44ZWM1ODYzNDJiOTIgMTAwNjQ0DQo+IC0tLSBhL2RyaXZlcnMvaTJjL211eGVzL2kyYy1t dXgtcGNhOTU0eC5jDQo+ICsrKyBiL2RyaXZlcnMvaTJjL211eGVzL2kyYy1tdXgtcGNhOTU0eC5j DQo+IEBAIC04Niw3ICs4Niw3IEBAIHN0cnVjdCBwY2E5NTR4IHsNCj4gIA0KPiAgCXU4IGxhc3Rf Y2hhbjsJCS8qIGxhc3QgcmVnaXN0ZXIgdmFsdWUgKi8NCj4gIAkvKiBNVVhfSURMRV9BU19JUywg TVVYX0lETEVfRElTQ09OTkVDVCBvciA+PSAwIGZvciBjaGFubmVsICovDQo+IC0JczggaWRsZV9z dGF0ZTsNCj4gKwlzMzIgaWRsZV9zdGF0ZTsNCj4gIA0KPiAgCXN0cnVjdCBpMmNfY2xpZW50ICpj bGllbnQ7DQo+ICANCj4gQEAgLTI1Niw3ICsyNTYsNyBAQCBzdGF0aWMgaW50IHBjYTk1NHhfZGVz ZWxlY3RfbXV4KHN0cnVjdCBpMmNfbXV4X2NvcmUgKm11eGMsIHUzMiBjaGFuKQ0KPiAgew0KPiAg CXN0cnVjdCBwY2E5NTR4ICpkYXRhID0gaTJjX211eF9wcml2KG11eGMpOw0KPiAgCXN0cnVjdCBp MmNfY2xpZW50ICpjbGllbnQgPSBkYXRhLT5jbGllbnQ7DQo+IC0JczggaWRsZV9zdGF0ZTsNCj4g KwlzMzIgaWRsZV9zdGF0ZTsNCj4gIA0KPiAgCWlkbGVfc3RhdGUgPSBSRUFEX09OQ0UoZGF0YS0+ aWRsZV9zdGF0ZSk7DQo+ICAJaWYgKGlkbGVfc3RhdGUgPj0gMCkNCj4gQEAgLTQwMiw2ICs0MDIs MjUgQEAgc3RhdGljIHZvaWQgcGNhOTU0eF9jbGVhbnVwKHN0cnVjdCBpMmNfbXV4X2NvcmUgKm11 eGMpDQo+ICAJaTJjX211eF9kZWxfYWRhcHRlcnMobXV4Yyk7DQo+ICB9DQo+ICANCj4gK3N0YXRp YyBpbnQgcGNhOTU0eF9pbml0KHN0cnVjdCBpMmNfY2xpZW50ICpjbGllbnQsIHN0cnVjdCBwY2E5 NTR4ICpkYXRhKQ0KPiArew0KPiArCS8qDQo+ICsJICogV3JpdGUgdGhlIG11eCByZWdpc3RlciBh dCBhZGRyIHRvIHZlcmlmeQ0KPiArCSAqIHRoYXQgdGhlIG11eCBpcyBpbiBmYWN0IHByZXNlbnQu IFRoaXMgYWxzbw0KPiArCSAqIGluaXRpYWxpemVzIHRoZSBtdXggdG8gZGlzY29ubmVjdGVkIHN0 YXRlLg0KPiArCSAqLw0KDQpUaGlzIGNvbW1lbnQgYmVsb25ncyBpbiBwY2E5NTR4X3Byb2JlLCBi ZWZvcmUgdGhlIGNhbGwgdG8gdGhpcyBmdW5jdGlvbi4NCkhvd2V2ZXIsIHRoZSBjb21tZW50IG1h eSBub3cgYmUgYmUgd3Jvbmcgc2luY2UgdGhlIG11eCBpcyBub3QgYWx3YXlzDQppbml0aWFsaXpl ZCB0byB0aGUgZGlzY29ubmVjdGVkIHN0YXRlLg0KDQo+ICsJaWYgKGRhdGEtPmlkbGVfc3RhdGUg Pj0gMCkgew0KPiArCQkvKiBBbHdheXMgZW5hYmxlIG11bHRpcGxleGVyICovDQoNCldoaWxlIEkg dW5kZXJzdGFuZCB0aGF0IGl0IGlzIGltcG9ydGFudCBmb3IgeW91ciBjYXNlIHRoYXQgdGhlIG11 eCBpcw0KYWx3YXlzIGVuYWJsZWQsIHRoaXMgaXMganVzdCBhIHNpZGUgZWZmZWN0IG9mIGhhdmlu ZyBhIHNwZWNpZmljDQppZGxlLXN0YXRlLiBJIHN1Z2dlc3QgdGhhdCB5b3UgcmVtb3ZlIHRoaXMg Y29tbWVudC4NCg0KPiArCQlpZiAoZGF0YS0+Y2hpcC0+bXV4dHlwZSA9PSBwY2E5NTR4X2lzbXV4 KQ0KPiArCQkJZGF0YS0+bGFzdF9jaGFuID0gZGF0YS0+aWRsZV9zdGF0ZSB8IGRhdGEtPmNoaXAt PmVuYWJsZTsNCj4gKwkJZWxzZQ0KPiArCQkJZGF0YS0+bGFzdF9jaGFuID0gMSA8PCBkYXRhLT5p ZGxlX3N0YXRlOw0KDQpUaGUgbWVhdCBvZiB0aGlzICJpZiIgaXMgc3RpbGwgZHVwbGljYXRlZCwg SSB3YXMgc3VnZ2VzdGluZyBhIGhlbHBlcg0KdGhhdCBvbmx5IGRpZCB0aGUgcmVndmFsIGNhbGN1 bGF0aW9uIHNvIHRoYXQgdGhlIG5ldyBoZWxwZXIgY291bGQNCmFsc28gYmUgdXNlZCBmcm9tIHBj YTk1NHhfc2VsZWN0X2NoYW4uDQoNCj4gKwl9IGVsc2Ugew0KPiArCQkvKiBEaXNjb25uZWN0IG11 bHRpcGxleGVyICovDQo+ICsJCWRhdGEtPmxhc3RfY2hhbiA9IDA7IC8qIGZvcmNlIHRoZSBmaXJz dCBzZWxlY3Rpb24gKi8NCg0KVGhlc2UgdHdvIGNvbW1lbnRzIHNob3VsZCBiZSBjb21iaW5lZC4N Cg0KPiArCX0NCj4gKwlyZXR1cm4gaTJjX3NtYnVzX3dyaXRlX2J5dGUoY2xpZW50LCBkYXRhLT5s YXN0X2NoYW4pOw0KPiArfQ0KPiAgLyoNCj4gICAqIEkyQyBpbml0L3Byb2JpbmcvZXhpdCBmdW5j dGlvbnMNCj4gICAqLw0KPiBAQCAtNDExLDcgKzQzMCw2IEBAIHN0YXRpYyBpbnQgcGNhOTU0eF9w cm9iZShzdHJ1Y3QgaTJjX2NsaWVudCAqY2xpZW50LA0KPiAgCXN0cnVjdCBpMmNfYWRhcHRlciAq YWRhcCA9IGNsaWVudC0+YWRhcHRlcjsNCj4gIAlzdHJ1Y3QgZGV2aWNlICpkZXYgPSAmY2xpZW50 LT5kZXY7DQo+ICAJc3RydWN0IGRldmljZV9ub2RlICpucCA9IGRldi0+b2Zfbm9kZTsNCj4gLQli b29sIGlkbGVfZGlzY29ubmVjdF9kdDsNCj4gIAlzdHJ1Y3QgZ3Bpb19kZXNjICpncGlvOw0KPiAg CXN0cnVjdCBpMmNfbXV4X2NvcmUgKm11eGM7DQo+ICAJc3RydWN0IHBjYTk1NHggKmRhdGE7DQo+ IEBAIC00NjIsMjIgKzQ4MCwxOCBAQCBzdGF0aWMgaW50IHBjYTk1NHhfcHJvYmUoc3RydWN0IGky Y19jbGllbnQgKmNsaWVudCwNCj4gIAkJfQ0KPiAgCX0NCj4gIA0KPiAtCS8qIFdyaXRlIHRoZSBt dXggcmVnaXN0ZXIgYXQgYWRkciB0byB2ZXJpZnkNCj4gLQkgKiB0aGF0IHRoZSBtdXggaXMgaW4g ZmFjdCBwcmVzZW50LiBUaGlzIGFsc28NCj4gLQkgKiBpbml0aWFsaXplcyB0aGUgbXV4IHRvIGRp c2Nvbm5lY3RlZCBzdGF0ZS4NCj4gLQkgKi8NCj4gLQlpZiAoaTJjX3NtYnVzX3dyaXRlX2J5dGUo Y2xpZW50LCAwKSA8IDApIHsNCj4gKwlpZiAob2ZfcHJvcGVydHlfcmVhZF91MzIobnAsICJpZGxl LXN0YXRlIiwgJmRhdGEtPmlkbGVfc3RhdGUpKQ0KPiArCQlkYXRhLT5pZGxlX3N0YXRlID0gTVVY X0lETEVfQVNfSVM7DQo+ICsNCj4gKwlpZiAob2ZfcHJvcGVydHlfcmVhZF9ib29sKG5wLCAiaTJj LW11eC1pZGxlLWRpc2Nvbm5lY3QiKSkNCj4gKwkJZGF0YS0+aWRsZV9zdGF0ZSA9IE1VWF9JRExF X0RJU0NPTk5FQ1Q7DQoNCkkgdGhpbmsgeW91IHNob3VsZCBpZ25vcmUgaTJjLW11eC1pZGxlLWRp c2Nvbm5lY3QgaWYgaWRsZS1zdGF0ZSBpcyBwcmVzZW50Lg0KSS5lLiBtb3ZlIHRoaXMgImlmIiBz dGF0ZW1lbnQgaW50byB0aGUgYm9keSBvZiB0aGUgZm9ybWVyICJpZiIuIEFsc28sIHlvdSBoYXZl DQpicm9rZW4gdGhpbmdzIGlmIG5wIGlzIE5VTEwuDQoNCkNoZWVycywNClBldGVyDQoNCj4gKw0K PiArCXJldCA9IHBjYTk1NHhfaW5pdChjbGllbnQsIGRhdGEpOw0KPiArCWlmIChyZXQgPCAwKSB7 DQo+ICAJCWRldl93YXJuKGRldiwgInByb2JlIGZhaWxlZFxuIik7DQo+ICAJCXJldHVybiAtRU5P REVWOw0KPiAgCX0NCj4gIA0KPiAtCWRhdGEtPmxhc3RfY2hhbiA9IDA7CQkgICAvKiBmb3JjZSB0 aGUgZmlyc3Qgc2VsZWN0aW9uICovDQo+IC0JZGF0YS0+aWRsZV9zdGF0ZSA9IE1VWF9JRExFX0FT X0lTOw0KPiAtDQo+IC0JaWRsZV9kaXNjb25uZWN0X2R0ID0gbnAgJiYNCj4gLQkJb2ZfcHJvcGVy dHlfcmVhZF9ib29sKG5wLCAiaTJjLW11eC1pZGxlLWRpc2Nvbm5lY3QiKTsNCj4gLQlpZiAoaWRs ZV9kaXNjb25uZWN0X2R0KQ0KPiAtCQlkYXRhLT5pZGxlX3N0YXRlID0gTVVYX0lETEVfRElTQ09O TkVDVDsNCj4gIA0KPiAgCXJldCA9IHBjYTk1NHhfaXJxX3NldHVwKG11eGMpOw0KPiAgCWlmIChy ZXQpDQo+IEBAIC01MzEsOCArNTQ1LDcgQEAgc3RhdGljIGludCBwY2E5NTR4X3Jlc3VtZShzdHJ1 Y3QgZGV2aWNlICpkZXYpDQo+ICAJc3RydWN0IGkyY19tdXhfY29yZSAqbXV4YyA9IGkyY19nZXRf Y2xpZW50ZGF0YShjbGllbnQpOw0KPiAgCXN0cnVjdCBwY2E5NTR4ICpkYXRhID0gaTJjX211eF9w cml2KG11eGMpOw0KPiAgDQo+IC0JZGF0YS0+bGFzdF9jaGFuID0gMDsNCj4gLQlyZXR1cm4gaTJj X3NtYnVzX3dyaXRlX2J5dGUoY2xpZW50LCAwKTsNCj4gKwlyZXR1cm4gcGNhOTU0eF9pbml0KGNs aWVudCwgZGF0YSk7DQo+ICB9DQo+ICAjZW5kaWYNCj4gIA0KPiANCg0K