From mboxrd@z Thu Jan 1 00:00:00 1970 From: Sasha Levin Subject: [PATCH AUTOSEL 4.19 183/258] drm/amd/display: Add retry to read ddc_clock pin Date: Mon, 28 Jan 2019 10:58:09 -0500 Message-ID: <20190128155924.51521-183-sashal@kernel.org> References: <20190128155924.51521-1-sashal@kernel.org> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: In-Reply-To: <20190128155924.51521-1-sashal@kernel.org> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Alex Deucher , Sasha Levin , Paul Hsieh , dri-devel@lists.freedesktop.org, amd-gfx@lists.freedesktop.org List-Id: amd-gfx.lists.freedesktop.org RnJvbTogUGF1bCBIc2llaCA8cGF1bC5oc2llaEBhbWQuY29tPgoKWyBVcHN0cmVhbSBjb21taXQg YmQ0OTA1YTk1ODNjNzYwZGEzMWRlZDcyNTZkY2E2ZjcxNDgzYzNkYyBdCgpbV0hZXQpPbiBjdXN0 b21lciBib2FyZCwgdGhlcmUgaXMgb25lIHBsdXNlICgxdiAsIDwgMW1zKSBvbgpERENfQ0xLIHBp biB3aGVuIHBsdWcgLyB1bnBsdWcgRFAgY2FibGUuIERyaXZlciB3aWxsIHJlYWQKaXQgYW5kIGNv bmZpZyBEUCB0byBIRE1JL0RWSSBkb25nbGUuCgpbSE9XXQpJZiB0aGVyZSBpcyBhIHJlYWwgZG9u Z2xlLCBERENfQ0xLIHNob3VsZCBiZSBhbHdheXMgcHVsbCBoaWdoLgpUcnkgdG8gcmVhZCBhZ2Fp biB0byByZWNvdmVyeSB0aGlzIHNwZWNpYWwgY2FzZS4gUmV0cnkgdGltZXMgPSAzLgpOZWVkIGFk ZGl0aW9uYWwgM21zIHRvIGRldGVjdCBEUCBwYXNzaXZlIGRvbmdsZSgzIGZhaWx1cmVzKQoKU2ln bmVkLW9mZi1ieTogUGF1bCBIc2llaCA8cGF1bC5oc2llaEBhbWQuY29tPgpSZXZpZXdlZC1ieTog RXJpYyBZYW5nIDxlcmljLnlhbmcyQGFtZC5jb20+CkFja2VkLWJ5OiBMZW8gTGkgPHN1bnBlbmcu bGlAYW1kLmNvbT4KU2lnbmVkLW9mZi1ieTogQWxleCBEZXVjaGVyIDxhbGV4YW5kZXIuZGV1Y2hl ckBhbWQuY29tPgpTaWduZWQtb2ZmLWJ5OiBTYXNoYSBMZXZpbiA8c2FzaGFsQGtlcm5lbC5vcmc+ Ci0tLQogZHJpdmVycy9ncHUvZHJtL2FtZC9kaXNwbGF5L2RjL2NvcmUvZGNfbGluay5jIHwgMjMg KysrKysrKysrKysrKystLS0tLQogMSBmaWxlIGNoYW5nZWQsIDE3IGluc2VydGlvbnMoKyksIDYg ZGVsZXRpb25zKC0pCgpkaWZmIC0tZ2l0IGEvZHJpdmVycy9ncHUvZHJtL2FtZC9kaXNwbGF5L2Rj L2NvcmUvZGNfbGluay5jIGIvZHJpdmVycy9ncHUvZHJtL2FtZC9kaXNwbGF5L2RjL2NvcmUvZGNf bGluay5jCmluZGV4IDdjODk3ODVmZDczMS4uMjNhN2VmOTdhZmRkIDEwMDY0NAotLS0gYS9kcml2 ZXJzL2dwdS9kcm0vYW1kL2Rpc3BsYXkvZGMvY29yZS9kY19saW5rLmMKKysrIGIvZHJpdmVycy9n cHUvZHJtL2FtZC9kaXNwbGF5L2RjL2NvcmUvZGNfbGluay5jCkBAIC0zMjQsNyArMzI0LDcgQEAg Ym9vbCBkY19saW5rX2lzX2RwX3NpbmtfcHJlc2VudChzdHJ1Y3QgZGNfbGluayAqbGluaykKIHsK IAllbnVtIGdwaW9fcmVzdWx0IGdwaW9fcmVzdWx0OwogCXVpbnQzMl90IGNsb2NrX3BpbiA9IDA7 Ci0KKwl1aW50OF90IHJldHJ5ID0gMDsKIAlzdHJ1Y3QgZGRjICpkZGM7CiAKIAllbnVtIGNvbm5l Y3Rvcl9pZCBjb25uZWN0b3JfaWQgPQpAQCAtMzUzLDExICszNTMsMjIgQEAgYm9vbCBkY19saW5r X2lzX2RwX3NpbmtfcHJlc2VudChzdHJ1Y3QgZGNfbGluayAqbGluaykKIAkJcmV0dXJuIHByZXNl bnQ7CiAJfQogCi0JLyogUmVhZCBHUElPOiBEUCBzaW5rIGlzIHByZXNlbnQgaWYgYm90aCBjbG9j ayBhbmQgZGF0YSBwaW5zIGFyZSB6ZXJvICovCi0JLyogW2FuYXVtb3ZdIGluIERBTDIsIHRoZXJl IHdhcyBubyBjaGVjayBmb3IgR1BJTyBmYWlsdXJlICovCi0KLQlncGlvX3Jlc3VsdCA9IGRhbF9n cGlvX2dldF92YWx1ZShkZGMtPnBpbl9jbG9jaywgJmNsb2NrX3Bpbik7Ci0JQVNTRVJUKGdwaW9f cmVzdWx0ID09IEdQSU9fUkVTVUxUX09LKTsKKwkvKgorCSAqIFJlYWQgR1BJTzogRFAgc2luayBp cyBwcmVzZW50IGlmIGJvdGggY2xvY2sgYW5kIGRhdGEgcGlucyBhcmUgemVybworCSAqCisJICog W1cvQV0gcGx1Zy11bnBsdWcgRFAgY2FibGUsIHNvbWV0aW1lcyBjdXN0b21lciBib2FyZCBoYXMK KwkgKiBvbmUgc2hvcnQgcHVsc2Ugb24gY2xrX3BpbigxViwgPCAxbXMpLiBEUCB3aWxsIGJlIGNv bmZpZyB0byBIRE1JL0RWSQorCSAqIHRoZW4gbW9uaXRvciBjYW4ndCBiciBsaWdodCB1cC4gQWRk IHJldHJ5IDMgdGltZXMKKwkgKiBCdXQgaW4gcmVhbCBwYXNzaXZlIGRvbmdsZSwgaXQgbmVlZCBh ZGRpdGlvbmFsIDNtcyB0byBkZXRlY3QKKwkgKi8KKwlkbyB7CisJCWdwaW9fcmVzdWx0ID0gZGFs X2dwaW9fZ2V0X3ZhbHVlKGRkYy0+cGluX2Nsb2NrLCAmY2xvY2tfcGluKTsKKwkJQVNTRVJUKGdw aW9fcmVzdWx0ID09IEdQSU9fUkVTVUxUX09LKTsKKwkJaWYgKGNsb2NrX3BpbikKKwkJCXVkZWxh eSgxMDAwKTsKKwkJZWxzZQorCQkJYnJlYWs7CisJfSB3aGlsZSAocmV0cnkrKyA8IDMpOwogCiAJ cHJlc2VudCA9IChncGlvX3Jlc3VsdCA9PSBHUElPX1JFU1VMVF9PSykgJiYgIWNsb2NrX3BpbjsK IAotLSAKMi4xOS4xCgpfX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f X19fXwpkcmktZGV2ZWwgbWFpbGluZyBsaXN0CmRyaS1kZXZlbEBsaXN0cy5mcmVlZGVza3RvcC5v cmcKaHR0cHM6Ly9saXN0cy5mcmVlZGVza3RvcC5vcmcvbWFpbG1hbi9saXN0aW5mby9kcmktZGV2 ZWwK