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Mon, 19 Sep 2022 13:14:39 -0400 From: "Trevitz, Daniel" To: Marc Kleine-Budde , "linux-can@vger.kernel.org" CC: Ryan Edwards Subject: RE: [PATCH v2 3/3] can: gs_usb: add switchable termination support Thread-Topic: [PATCH v2 3/3] can: gs_usb: add switchable termination support Thread-Index: AQHYy6Qn3CN19ElUP0SIyc5f1WgmVa3m/LTg Date: Mon, 19 Sep 2022 17:14:39 +0000 Message-ID: <46b828feda4c4ef3bf978dd186b094af@wika.com> References: <20220918211802.692405-1-mkl@pengutronix.de> <20220918211802.692405-4-mkl@pengutronix.de> In-Reply-To: <20220918211802.692405-4-mkl@pengutronix.de> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [172.17.6.20] Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 MIME-Version: 1.0 X-GBS-PROC: nzy5iiIda39ucI2qNLF3y8PI1EhhrkxBKnWcec5sPEis+4FlaVMGWCjPTtWeJN4I X-GBS-PROCJOB: 2f1wiqyU7B/2CK5oISlAjwWESGkZN0pTt1ZFu+UuCLR4RGd47SLzoagCXaFGEd0/ Precedence: bulk List-ID: X-Mailing-List: linux-can@vger.kernel.org TWFyYywNCg0KKyAgICAgICBpZiAoZmVhdHVyZSAmIEdTX0NBTl9GRUFUVVJFX1RFUk1JTkFU SU9OKSB7DQorICAgICAgICAgICAgICAgZGV2LT5jYW4udGVybWluYXRpb25fY29uc3QgPSBn c191c2JfdGVybWluYXRpb25fY29uc3Q7DQorICAgICAgICAgICAgICAgZGV2LT5jYW4udGVy bWluYXRpb25fY29uc3RfY250ID0gQVJSQVlfU0laRShnc191c2JfdGVybWluYXRpb25fY29u c3QpOw0KKyAgICAgICAgICAgICAgIGRldi0+Y2FuLmRvX3NldF90ZXJtaW5hdGlvbiA9IGdz X3VzYl9zZXRfdGVybWluYXRpb247DQorDQorICAgICAgICAgICAgICAgcmMgPSBnc191c2Jf Z2V0X3Rlcm1pbmF0aW9uKG5ldGRldiwgJmRldi0+Y2FuLnRlcm1pbmF0aW9uKTsNCisgICAg ICAgICAgICAgICBpZiAocmMpIHsNCisgICAgICAgICAgICAgICAgICAgICAgIGRldl9lcnIo JmludGYtPmRldiwNCisgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgIkNvdWxkbid0 IGdldCBjdXJyZW50IHRlcm1pbmF0aW9uIHN0YXRlIGZvciBjaGFubmVsICVkICglcGUpXG4i LA0KKyAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICBjaGFubmVsLCBFUlJfUFRSKHJj KSk7DQorICAgICAgICAgICAgICAgICAgICAgICBnb3RvIG91dF9mcmVlX2NhbmRldjsNCisg ICAgICAgICAgICAgICB9DQorICAgICAgIH0NCg0KRG9lcyBpdCBtYWtlIHNlbnNlIHRvIGNo ZWNrIGlmIHdlIGhhdmUgdGhlIHRlcm1pbmF0aW9uIHN1cHBvcnQsIHRoZW4gc2V0IHRoZSB2 YWx1ZXM/DQpNeSBsb2dpYyBpcyB0aGF0IGp1c3QgYmVjYXVzZSB0aGUgdGVybWluYXRpb24g aXMgbm90IHdvcmtpbmcgY29ycmVjdGx5LCBpdCBkb2VzIG5vdCBtZWFuIGV2ZXJ5dGhpbmcg aXMgYnJva2VuLg0KVGhpcyB3YXkgeW91IGNvdWxkIGhhdmUgYSBtdWx0aS1jYW4tY2hhbm5l bCBVU0IgZGV2aWNlIGJ1dCB3aXRoIG9ubHkgc3BlY2lmaWMgY2hhbm5lbHMgc3VwcG9ydGlu ZyBjb25maWd1cmFibGUgdGVybWluYXRpb24gcmVzaXN0b3JzLg0KDQpTb21ldGhpbmcgbGlr ZToNCg0KcmMgPSBnc191c2JfZ2V0X3Rlcm1pbmF0aW9uKG5ldGRldiwgJmRldi0+Y2FuLnRl cm1pbmF0aW9uKTsNCiBpZiAocmMpIHsNCglkZXZfZXJyKCZpbnRmLT5kZXYsDQoJCSJDb3Vs ZG4ndCBnZXQgY3VycmVudCB0ZXJtaW5hdGlvbiBzdGF0ZSBmb3IgY2hhbm5lbCAlZCAoJXBl KS4gTm90IGVuYWJsaW5nIHRlcm1pbmF0aW9uIHN1cHBvcnQgZm9yIHRoaXMgY2hhbm5lbFxu IiwNCgkJY2hhbm5lbCwgRVJSX1BUUihyYykpOw0KIH0gZWxzZSB7DQoJZGV2LT5jYW4udGVy bWluYXRpb25fY29uc3QgPSBnc191c2JfdGVybWluYXRpb25fY29uc3Q7DQoJZGV2LT5jYW4u dGVybWluYXRpb25fY29uc3RfY250ID0gQVJSQVlfU0laRShnc191c2JfdGVybWluYXRpb25f Y29uc3QpOw0KCWRldi0+Y2FuLmRvX3NldF90ZXJtaW5hdGlvbiA9IGdzX3VzYl9zZXRfdGVy bWluYXRpb247DQp9DQoNCkJSLA0KICBEYW5pZWwNCg0KDQoNCg0KKipDT05GSURFTlRJQUxJ VFkgTk9USUNFKioNCg0KDQpUaGlzIGNvbW11bmljYXRpb24sIGluY2x1ZGluZyBhbnkgYXR0 YWNobWVudHMsIGlzIGZyb20gV0lLQSBNb2JpbGUgQ29udHJvbCwgTFAgYW5kIGNvbnRhaW5z IGNvbmZpZGVudGlhbCBpbmZvcm1hdGlvbiBpbnRlbmRlZCBvbmx5IGZvciB0aGUgYWRkcmVz c2VlKHMpLiBJZiB5b3UgYXJlIG5vdCB0aGUgaW50ZW5kZWQgcmVjaXBpZW50LCBhbnkgdXNl LCBkaXNzZW1pbmF0aW9uLCBkaXN0cmlidXRpb24gb3IgY29weWluZyBvZiB0aGlzIGRvY3Vt ZW50IG9yIGl0cyBjb250ZW50cyBpcyBzdHJpY3RseSBwcm9oaWJpdGVkLiBJZiB5b3UgaGF2 ZSByZWNlaXZlZCB0aGlzIGNvbW11bmljYXRpb24gaW4gZXJyb3IsIHBsZWFzZSBjb250YWN0 IHRoZSBzZW5kZXIgYnkgcmVwbHkgZS1tYWlsIGltbWVkaWF0ZWx5IGFuZCBkZXN0cm95IGFs bCBjb3BpZXMgb2YgdGhlIG9yaWdpbmFsIG1lc3NhZ2UuIA0K