From mboxrd@z Thu Jan  1 00:00:00 1970
From: Yakir Yang <ykk@rock-chips.com>
Subject: Re: [PATCH v3 2/3] drm/bridge: analogix_dp: use jiffies to simulate
 timeout loop
Date: Tue, 20 Sep 2016 10:18:38 +0800
Message-ID: <01b6f408-ba3b-b2c0-b9f2-097420ef96cb@rock-chips.com>
References: <1473306526-4340-1-git-send-email-ykk@rock-chips.com>
 <1473414290-335-1-git-send-email-ykk@rock-chips.com>
 <CAOw6vbLhXONEGfWP8B+bkJE+H0oAZb0hPyAP9SodNu-m3cXrGQ@mail.gmail.com>
Mime-Version: 1.0
Content-Type: text/plain; charset="utf-8"; Format="flowed"
Content-Transfer-Encoding: base64
Return-path: <dri-devel-bounces@lists.freedesktop.org>
In-Reply-To: <CAOw6vbLhXONEGfWP8B+bkJE+H0oAZb0hPyAP9SodNu-m3cXrGQ@mail.gmail.com>
List-Unsubscribe: <https://lists.freedesktop.org/mailman/options/dri-devel>,
 <mailto:dri-devel-request@lists.freedesktop.org?subject=unsubscribe>
List-Archive: <https://lists.freedesktop.org/archives/dri-devel>
List-Post: <mailto:dri-devel@lists.freedesktop.org>
List-Help: <mailto:dri-devel-request@lists.freedesktop.org?subject=help>
List-Subscribe: <https://lists.freedesktop.org/mailman/listinfo/dri-devel>,
 <mailto:dri-devel-request@lists.freedesktop.org?subject=subscribe>
Errors-To: dri-devel-bounces@lists.freedesktop.org
Sender: "dri-devel" <dri-devel-bounces@lists.freedesktop.org>
To: Sean Paul <seanpaul@chromium.org>
Cc: Krzysztof Kozlowski <k.kozlowski@samsung.com>, linux-samsung-soc <linux-samsung-soc@vger.kernel.org>, Tomeu Vizoso <tomeu.vizoso@collabora.com>, linux-rockchip@lists.infradead.org, Daniel Vetter <daniel.vetter@ffwll.ch>, Douglas Anderson <dianders@chromium.org>, dri-devel <dri-devel@lists.freedesktop.org>, Tomasz Figa <tfiga@chromium.org>, Javier Martinez Canillas <javier@osg.samsung.com>, Mika Kahola <mika.kahola@intel.com>, Jingoo Han <jingoohan1@gmail.com>, =?UTF-8?Q?St=c3=a9phane_Marchesin?= <marcheu@chromium.org>, Thierry Reding <treding@nvidia.com>, Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
List-Id: linux-rockchip.vger.kernel.org

SGkgU2VhbiwKCgpPbiAwOS8xMi8yMDE2IDA5OjUxIFBNLCBTZWFuIFBhdWwgd3JvdGU6Cj4gT24g
RnJpLCBTZXAgOSwgMjAxNiBhdCA1OjQ0IEFNLCBZYWtpciBZYW5nIDx5a2tAcm9jay1jaGlwcy5j
b20+IHdyb3RlOgo+PiBTaWduZWQtb2ZmLWJ5OiBZYWtpciBZYW5nIDx5a2tAcm9jay1jaGlwcy5j
b20+Cj4+IC0tLQo+PiBDaGFuZ2VzIGluIHYzOgo+PiAtIFN1Z2dlc3RlZCBieSBTZWFuCj4+Cj4+
IENoYW5nZXMgaW4gdjI6IE5vbmUKPj4KPj4gICBkcml2ZXJzL2dwdS9kcm0vYnJpZGdlL2FuYWxv
Z2l4L2FuYWxvZ2l4X2RwX2NvcmUuaCB8ICAzICsrLQo+PiAgIGRyaXZlcnMvZ3B1L2RybS9icmlk
Z2UvYW5hbG9naXgvYW5hbG9naXhfZHBfcmVnLmMgIHwgMTggKysrKysrKysrLS0tLS0tLS0tCj4+
ICAgMiBmaWxlcyBjaGFuZ2VkLCAxMSBpbnNlcnRpb25zKCspLCAxMCBkZWxldGlvbnMoLSkKPj4K
Pj4gZGlmZiAtLWdpdCBhL2RyaXZlcnMvZ3B1L2RybS9icmlkZ2UvYW5hbG9naXgvYW5hbG9naXhf
ZHBfY29yZS5oIGIvZHJpdmVycy9ncHUvZHJtL2JyaWRnZS9hbmFsb2dpeC9hbmFsb2dpeF9kcF9j
b3JlLmgKPj4gaW5kZXggYTE1ZjA3Ni4uZDU2NGU5MCAxMDA2NDQKPj4gLS0tIGEvZHJpdmVycy9n
cHUvZHJtL2JyaWRnZS9hbmFsb2dpeC9hbmFsb2dpeF9kcF9jb3JlLmgKPj4gKysrIGIvZHJpdmVy
cy9ncHUvZHJtL2JyaWRnZS9hbmFsb2dpeC9hbmFsb2dpeF9kcF9jb3JlLmgKPj4gQEAgLTE2LDEw
ICsxNiwxMSBAQAo+PiAgICNpbmNsdWRlIDxkcm0vZHJtX2NydGMuaD4KPj4gICAjaW5jbHVkZSA8
ZHJtL2RybV9kcF9oZWxwZXIuaD4KPj4KPj4gLSNkZWZpbmUgRFBfVElNRU9VVF9MT09QX0NPVU5U
IDEwMAo+PiAgICNkZWZpbmUgTUFYX0NSX0xPT1AgNQo+PiAgICNkZWZpbmUgTUFYX0VRX0xPT1Ag
NQo+Pgo+PiArI2RlZmluZSBEUF9USU1FT1VUX0xPT1BfTVMgICAgICAgICAgICAgICAgICAgICBt
c2Vjc190b19qaWZmaWVzKDEpCj4gVGhlIG5hbWUgc3VnZ2VzdHMgdGhlIHVuaXRzIGhlcmUgYXJl
IG1zLCBidXQgeW91J3JlIHN0b3JpbmcgamlmZmllcy4KPiBEbyB0aGUgbXNlY3NfdG9famlmZmll
cyBjb252ZXJzaW9uIGRvd24gYmVsb3cuCgpJIHN1ZGRlbmx5IHJlYWxpemVkIHRoYXQgJ2FuYWxv
Z2l4X2RwX2NvcmUuYycgYWxzbyB1c2VkIHRoZSAKJ0RQX1RJTUVPVVRfTE9PUF9DT1VOVCcgbWFj
cm9zLCBhbmQgJ2FuYWxvZ2l4X2RwX2NvcmUuYycgaGF2ZSBmb3VyIGtpbmRzIApvZiB0aW1lb3V0
LAogICAtIERQX1RJTUVPVVRfTE9PUF9DT1VOVCAqIDF1cwogICAtIERQX1RJTUVPVVRfTE9PUF9D
T1VOVCAqIDEwdXMKICAgLSBEUF9USU1FT1VUX0xPT1BfQ09VTlQgKiAxMDB1cwogICAtIERQX1RJ
TUVPVVRfTE9PUF9DT1VOVCAqIDEwMDB1cwoKSSBtYXkgZ3Vlc3MgaXQncyBub3QgbmVjZXNzYXJ5
IHRvIHJlcGxhY2UgdGhlICdEUF9USU1FT1VUX0xPT1BfQ09VTlQnIApub3cgIDotKQoKLSBZYWtp
cgoKPgo+PiArCj4+ICAgLyogRFBfTUFYX0xBTkVfQ09VTlQgKi8KPj4gICAjZGVmaW5lIERQQ0Rf
RU5IQU5DRURfRlJBTUVfQ0FQKHgpICAgICAgICAgICAgICgoKHgpID4+IDcpICYgMHgxKQo+PiAg
ICNkZWZpbmUgRFBDRF9NQVhfTEFORV9DT1VOVCh4KSAgICAgICAgICAgICAgICAgKCh4KSAmIDB4
MWYpCj4+IGRpZmYgLS1naXQgYS9kcml2ZXJzL2dwdS9kcm0vYnJpZGdlL2FuYWxvZ2l4L2FuYWxv
Z2l4X2RwX3JlZy5jIGIvZHJpdmVycy9ncHUvZHJtL2JyaWRnZS9hbmFsb2dpeC9hbmFsb2dpeF9k
cF9yZWcuYwo+PiBpbmRleCBhNGQxN2I4Li4xNWE0Y2YwIDEwMDY0NAo+PiAtLS0gYS9kcml2ZXJz
L2dwdS9kcm0vYnJpZGdlL2FuYWxvZ2l4L2FuYWxvZ2l4X2RwX3JlZy5jCj4+ICsrKyBiL2RyaXZl
cnMvZ3B1L2RybS9icmlkZ2UvYW5hbG9naXgvYW5hbG9naXhfZHBfcmVnLmMKPj4gQEAgLTMzNSw3
ICszMzUsNyBAQCB2b2lkIGFuYWxvZ2l4X2RwX3NldF9hbmFsb2dfcG93ZXJfZG93bihzdHJ1Y3Qg
YW5hbG9naXhfZHBfZGV2aWNlICpkcCwKPj4gICB2b2lkIGFuYWxvZ2l4X2RwX2luaXRfYW5hbG9n
X2Z1bmMoc3RydWN0IGFuYWxvZ2l4X2RwX2RldmljZSAqZHApCj4+ICAgewo+PiAgICAgICAgICB1
MzIgcmVnOwo+PiAtICAgICAgIGludCB0aW1lb3V0X2xvb3AgPSAwOwo+PiArICAgICAgIHVuc2ln
bmVkIGxvbmcgdGltZW91dDsKPj4KPj4gICAgICAgICAgYW5hbG9naXhfZHBfc2V0X2FuYWxvZ19w
b3dlcl9kb3duKGRwLCBQT1dFUl9BTEwsIDApOwo+Pgo+PiBAQCAtMzUwLDkgKzM1MCw5IEBAIHZv
aWQgYW5hbG9naXhfZHBfaW5pdF9hbmFsb2dfZnVuYyhzdHJ1Y3QgYW5hbG9naXhfZHBfZGV2aWNl
ICpkcCkKPj4gICAgICAgICAgaWYgKGFuYWxvZ2l4X2RwX2dldF9wbGxfbG9ja19zdGF0dXMoZHAp
ID09IFBMTF9VTkxPQ0tFRCkgewo+PiAgICAgICAgICAgICAgICAgIGFuYWxvZ2l4X2RwX3NldF9w
bGxfcG93ZXJfZG93bihkcCwgMCk7Cj4+Cj4+ICsgICAgICAgICAgICAgICB0aW1lb3V0ID0gamlm
ZmllcyArIERQX1RJTUVPVVRfTE9PUF9NUzsKPiB0aW1lb3V0ID0gamlmZmllcyArIG1zZWNzX3Rv
X2ppZmZpZXMoRFBfVElNRU9VVF9MT09QX01TKTsKPgo+PiAgICAgICAgICAgICAgICAgIHdoaWxl
IChhbmFsb2dpeF9kcF9nZXRfcGxsX2xvY2tfc3RhdHVzKGRwKSA9PSBQTExfVU5MT0NLRUQpIHsK
Pj4gLSAgICAgICAgICAgICAgICAgICAgICAgdGltZW91dF9sb29wKys7Cj4+IC0gICAgICAgICAg
ICAgICAgICAgICAgIGlmIChEUF9USU1FT1VUX0xPT1BfQ09VTlQgPCB0aW1lb3V0X2xvb3ApIHsK
Pj4gKyAgICAgICAgICAgICAgICAgICAgICAgaWYgKHRpbWVfYWZ0ZXIoamlmZmllcywgdGltZW91
dCkpIHsKPj4gICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgZGV2X2VycihkcC0+ZGV2
LCAiZmFpbGVkIHRvIGdldCBwbGwgbG9jayBzdGF0dXNcbiIpOwo+PiAgICAgICAgICAgICAgICAg
ICAgICAgICAgICAgICAgICByZXR1cm47Cj4+ICAgICAgICAgICAgICAgICAgICAgICAgICB9Cj4+
IEBAIC01MDEsNyArNTAxLDcgQEAgaW50IGFuYWxvZ2l4X2RwX3N0YXJ0X2F1eF90cmFuc2FjdGlv
bihzdHJ1Y3QgYW5hbG9naXhfZHBfZGV2aWNlICpkcCkKPj4gICB7Cj4+ICAgICAgICAgIGludCBy
ZWc7Cj4+ICAgICAgICAgIGludCByZXR2YWwgPSAwOwo+PiAtICAgICAgIGludCB0aW1lb3V0X2xv
b3AgPSAwOwo+PiArICAgICAgIHVuc2lnbmVkIGxvbmcgdGltZW91dDsKPj4KPj4gICAgICAgICAg
LyogRW5hYmxlIEFVWCBDSCBvcGVyYXRpb24gKi8KPj4gICAgICAgICAgcmVnID0gcmVhZGwoZHAt
PnJlZ19iYXNlICsgQU5BTE9HSVhfRFBfQVVYX0NIX0NUTF8yKTsKPj4gQEAgLTUwOSwxMCArNTA5
LDEwIEBAIGludCBhbmFsb2dpeF9kcF9zdGFydF9hdXhfdHJhbnNhY3Rpb24oc3RydWN0IGFuYWxv
Z2l4X2RwX2RldmljZSAqZHApCj4+ICAgICAgICAgIHdyaXRlbChyZWcsIGRwLT5yZWdfYmFzZSAr
IEFOQUxPR0lYX0RQX0FVWF9DSF9DVExfMik7Cj4+Cj4+ICAgICAgICAgIC8qIElzIEFVWCBDSCBj
b21tYW5kIHJlcGx5IHJlY2VpdmVkPyAqLwo+PiArICAgICAgIHRpbWVvdXQgPSBqaWZmaWVzICsg
RFBfVElNRU9VVF9MT09QX01TOwo+PiAgICAgICAgICByZWcgPSByZWFkbChkcC0+cmVnX2Jhc2Ug
KyBBTkFMT0dJWF9EUF9JTlRfU1RBKTsKPj4gICAgICAgICAgd2hpbGUgKCEocmVnICYgUlBMWV9S
RUNFSVYpKSB7Cj4+IC0gICAgICAgICAgICAgICB0aW1lb3V0X2xvb3ArKzsKPj4gLSAgICAgICAg
ICAgICAgIGlmIChEUF9USU1FT1VUX0xPT1BfQ09VTlQgPCB0aW1lb3V0X2xvb3ApIHsKPj4gKyAg
ICAgICAgICAgICAgIGlmICh0aW1lX2FmdGVyKGppZmZpZXMsIHRpbWVvdXQpKSB7Cj4+ICAgICAg
ICAgICAgICAgICAgICAgICAgICBkZXZfZXJyKGRwLT5kZXYsICJBVVggQ0ggY29tbWFuZCByZXBs
eSBmYWlsZWQhXG4iKTsKPj4gICAgICAgICAgICAgICAgICAgICAgICAgIHJldHVybiAtRVRJTUVE
T1VUOwo+PiAgICAgICAgICAgICAgICAgIH0KPj4gQEAgLTEwNTUsNyArMTA1NSw3IEBAIHNzaXpl
X3QgYW5hbG9naXhfZHBfdHJhbnNmZXIoc3RydWN0IGFuYWxvZ2l4X2RwX2RldmljZSAqZHAsCj4+
ICAgewo+PiAgICAgICAgICB1MzIgcmVnOwo+PiAgICAgICAgICB1OCAqYnVmZmVyID0gbXNnLT5i
dWZmZXI7Cj4+IC0gICAgICAgaW50IHRpbWVvdXRfbG9vcCA9IDA7Cj4+ICsgICAgICAgdW5zaWdu
ZWQgbG9uZyB0aW1lb3V0Owo+PiAgICAgICAgICB1bnNpZ25lZCBpbnQgaTsKPj4gICAgICAgICAg
aW50IG51bV90cmFuc2ZlcnJlZCA9IDA7Cj4+Cj4+IEBAIC0xMTIzLDEwICsxMTIzLDEwIEBAIHNz
aXplX3QgYW5hbG9naXhfZHBfdHJhbnNmZXIoc3RydWN0IGFuYWxvZ2l4X2RwX2RldmljZSAqZHAs
Cj4+Cj4+ICAgICAgICAgIC8qIElzIEFVWCBDSCBjb21tYW5kIHJlcGx5IHJlY2VpdmVkPyAqLwo+
PiAgICAgICAgICAvKiBUT0RPOiBXYWl0IGZvciBhbiBpbnRlcnJ1cHQgaW5zdGVhZCBvZiBsb29w
aW5nPyAqLwo+PiArICAgICAgIHRpbWVvdXQgPSBqaWZmaWVzICsgRFBfVElNRU9VVF9MT09QX01T
Owo+PiAgICAgICAgICByZWcgPSByZWFkbChkcC0+cmVnX2Jhc2UgKyBBTkFMT0dJWF9EUF9JTlRf
U1RBKTsKPj4gICAgICAgICAgd2hpbGUgKCEocmVnICYgUlBMWV9SRUNFSVYpKSB7Cj4+IC0gICAg
ICAgICAgICAgICB0aW1lb3V0X2xvb3ArKzsKPj4gLSAgICAgICAgICAgICAgIGlmICh0aW1lb3V0
X2xvb3AgPiBEUF9USU1FT1VUX0xPT1BfQ09VTlQpIHsKPj4gKyAgICAgICAgICAgICAgIGlmICh0
aW1lX2FmdGVyKGppZmZpZXMsIHRpbWVvdXQpKSB7Cj4+ICAgICAgICAgICAgICAgICAgICAgICAg
ICBkZXZfZXJyKGRwLT5kZXYsICJBVVggQ0ggY29tbWFuZCByZXBseSBmYWlsZWQhXG4iKTsKPj4g
ICAgICAgICAgICAgICAgICAgICAgICAgIHJldHVybiAtRVRJTUVET1VUOwo+PiAgICAgICAgICAg
ICAgICAgIH0KPj4gLS0KPj4gMS45LjEKPj4KPj4KPgo+CgoKX19fX19fX19fX19fX19fX19fX19f
X19fX19fX19fX19fX19fX19fX19fX19fX18KZHJpLWRldmVsIG1haWxpbmcgbGlzdApkcmktZGV2
ZWxAbGlzdHMuZnJlZWRlc2t0b3Aub3JnCmh0dHBzOi8vbGlzdHMuZnJlZWRlc2t0b3Aub3JnL21h
aWxtYW4vbGlzdGluZm8vZHJpLWRldmVsCg==