From mboxrd@z Thu Jan 1 00:00:00 1970 From: Subject: [PATCH 26/45] drm/amd/display: Add retry to read ddc_clock pin Date: Tue, 11 Dec 2018 17:57:32 -0500 Message-ID: <1544569071-7114-27-git-send-email-sunpeng.li@amd.com> References: <1544569071-7114-1-git-send-email-sunpeng.li@amd.com> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: In-Reply-To: <1544569071-7114-1-git-send-email-sunpeng.li-5C7GfCeVMHo@public.gmane.org> List-Id: Discussion list for AMD gfx List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: amd-gfx-bounces-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org Sender: "amd-gfx" To: amd-gfx-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org Cc: sunpeng.li-5C7GfCeVMHo@public.gmane.org, Paul Hsieh RnJvbTogUGF1bCBIc2llaCA8cGF1bC5oc2llaEBhbWQuY29tPgoKW1dIWV0KT24gY3VzdG9tZXIg Ym9hcmQsIHRoZXJlIGlzIG9uZSBwbHVzZSAoMXYgLCA8IDFtcykgb24KRERDX0NMSyBwaW4gd2hl biBwbHVnIC8gdW5wbHVnIERQIGNhYmxlLiBEcml2ZXIgd2lsbCByZWFkCml0IGFuZCBjb25maWcg RFAgdG8gSERNSS9EVkkgZG9uZ2xlLgoKW0hPV10KSWYgdGhlcmUgaXMgYSByZWFsIGRvbmdsZSwg RERDX0NMSyBzaG91bGQgYmUgYWx3YXlzIHB1bGwgaGlnaC4KVHJ5IHRvIHJlYWQgYWdhaW4gdG8g cmVjb3ZlcnkgdGhpcyBzcGVjaWFsIGNhc2UuIFJldHJ5IHRpbWVzID0gMy4KTmVlZCBhZGRpdGlv bmFsIDNtcyB0byBkZXRlY3QgRFAgcGFzc2l2ZSBkb25nbGUoMyBmYWlsdXJlcykKClNpZ25lZC1v ZmYtYnk6IFBhdWwgSHNpZWggPHBhdWwuaHNpZWhAYW1kLmNvbT4KUmV2aWV3ZWQtYnk6IEVyaWMg WWFuZyA8ZXJpYy55YW5nMkBhbWQuY29tPgpBY2tlZC1ieTogTGVvIExpIDxzdW5wZW5nLmxpQGFt ZC5jb20+Ci0tLQogZHJpdmVycy9ncHUvZHJtL2FtZC9kaXNwbGF5L2RjL2NvcmUvZGNfbGluay5j IHwgMjMgKysrKysrKysrKysrKysrKystLS0tLS0KIDEgZmlsZSBjaGFuZ2VkLCAxNyBpbnNlcnRp b25zKCspLCA2IGRlbGV0aW9ucygtKQoKZGlmZiAtLWdpdCBhL2RyaXZlcnMvZ3B1L2RybS9hbWQv ZGlzcGxheS9kYy9jb3JlL2RjX2xpbmsuYyBiL2RyaXZlcnMvZ3B1L2RybS9hbWQvZGlzcGxheS9k Yy9jb3JlL2RjX2xpbmsuYwppbmRleCAyYjgyZWE4Li42OWJlZTAxIDEwMDY0NAotLS0gYS9kcml2 ZXJzL2dwdS9kcm0vYW1kL2Rpc3BsYXkvZGMvY29yZS9kY19saW5rLmMKKysrIGIvZHJpdmVycy9n cHUvZHJtL2FtZC9kaXNwbGF5L2RjL2NvcmUvZGNfbGluay5jCkBAIC0zMzgsNyArMzM4LDcgQEAg Ym9vbCBkY19saW5rX2lzX2RwX3NpbmtfcHJlc2VudChzdHJ1Y3QgZGNfbGluayAqbGluaykKIHsK IAllbnVtIGdwaW9fcmVzdWx0IGdwaW9fcmVzdWx0OwogCXVpbnQzMl90IGNsb2NrX3BpbiA9IDA7 Ci0KKwl1aW50OF90IHJldHJ5ID0gMDsKIAlzdHJ1Y3QgZGRjICpkZGM7CiAKIAllbnVtIGNvbm5l Y3Rvcl9pZCBjb25uZWN0b3JfaWQgPQpAQCAtMzY3LDExICszNjcsMjIgQEAgYm9vbCBkY19saW5r X2lzX2RwX3NpbmtfcHJlc2VudChzdHJ1Y3QgZGNfbGluayAqbGluaykKIAkJcmV0dXJuIHByZXNl bnQ7CiAJfQogCi0JLyogUmVhZCBHUElPOiBEUCBzaW5rIGlzIHByZXNlbnQgaWYgYm90aCBjbG9j ayBhbmQgZGF0YSBwaW5zIGFyZSB6ZXJvICovCi0JLyogW2FuYXVtb3ZdIGluIERBTDIsIHRoZXJl IHdhcyBubyBjaGVjayBmb3IgR1BJTyBmYWlsdXJlICovCi0KLQlncGlvX3Jlc3VsdCA9IGRhbF9n cGlvX2dldF92YWx1ZShkZGMtPnBpbl9jbG9jaywgJmNsb2NrX3Bpbik7Ci0JQVNTRVJUKGdwaW9f cmVzdWx0ID09IEdQSU9fUkVTVUxUX09LKTsKKwkvKgorCSAqIFJlYWQgR1BJTzogRFAgc2luayBp cyBwcmVzZW50IGlmIGJvdGggY2xvY2sgYW5kIGRhdGEgcGlucyBhcmUgemVybworCSAqCisJICog W1cvQV0gcGx1Zy11bnBsdWcgRFAgY2FibGUsIHNvbWV0aW1lcyBjdXN0b21lciBib2FyZCBoYXMK KwkgKiBvbmUgc2hvcnQgcHVsc2Ugb24gY2xrX3BpbigxViwgPCAxbXMpLiBEUCB3aWxsIGJlIGNv bmZpZyB0byBIRE1JL0RWSQorCSAqIHRoZW4gbW9uaXRvciBjYW4ndCBiciBsaWdodCB1cC4gQWRk IHJldHJ5IDMgdGltZXMKKwkgKiBCdXQgaW4gcmVhbCBwYXNzaXZlIGRvbmdsZSwgaXQgbmVlZCBh ZGRpdGlvbmFsIDNtcyB0byBkZXRlY3QKKwkgKi8KKwlkbyB7CisJCWdwaW9fcmVzdWx0ID0gZGFs X2dwaW9fZ2V0X3ZhbHVlKGRkYy0+cGluX2Nsb2NrLCAmY2xvY2tfcGluKTsKKwkJQVNTRVJUKGdw aW9fcmVzdWx0ID09IEdQSU9fUkVTVUxUX09LKTsKKwkJaWYgKGNsb2NrX3BpbikKKwkJCXVkZWxh eSgxMDAwKTsKKwkJZWxzZQorCQkJYnJlYWs7CisJfSB3aGlsZSAocmV0cnkrKyA8IDMpOwogCiAJ cHJlc2VudCA9IChncGlvX3Jlc3VsdCA9PSBHUElPX1JFU1VMVF9PSykgJiYgIWNsb2NrX3BpbjsK IAotLSAKMi43LjQKCl9fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f X19fCmFtZC1nZnggbWFpbGluZyBsaXN0CmFtZC1nZnhAbGlzdHMuZnJlZWRlc2t0b3Aub3JnCmh0 dHBzOi8vbGlzdHMuZnJlZWRlc2t0b3Aub3JnL21haWxtYW4vbGlzdGluZm8vYW1kLWdmeAo=