<p>Daisuke Nojiri has uploaded this change for <strong>review</strong>.</p><p><a href="https://review.coreboot.org/23745">View Change</a></p><pre style="font-family: monospace,monospace; white-space: pre-wrap;">chromeec: Add google_chromeec_wait_for_display<br><br>The google_chromeec_wait_for_displa API checks whether a display is<br>ready or not. It waits in a loop until EC says it entered DisplayPort<br>alternative mode or times out in 2 seconds.<br><br>BUG=b:72387533<br>BRANCH=none<br>TEST=Boot Fizz in manual recovery mode. Verify recovery screen is<br>displayed.<br><br>Change-Id: Ieee5db77bd6e147936ea8fc735dcbeffec98c0f8<br>Signed-off-by: Daisuke Nojiri <dnojiri@chromium.org><br>---<br>M src/ec/google/chromeec/ec.c<br>M src/ec/google/chromeec/ec.h<br>2 files changed, 17 insertions(+), 0 deletions(-)<br><br></pre><pre style="font-family: monospace,monospace; white-space: pre-wrap;">git pull ssh://review.coreboot.org:29418/coreboot refs/changes/45/23745/1</pre><pre style="font-family: monospace,monospace; white-space: pre-wrap;"><span>diff --git a/src/ec/google/chromeec/ec.c b/src/ec/google/chromeec/ec.c</span><br><span>index 229a710..156357a 100644</span><br><span>--- a/src/ec/google/chromeec/ec.c</span><br><span>+++ b/src/ec/google/chromeec/ec.c</span><br><span>@@ -953,3 +953,19 @@</span><br><span> </span><br><span>         return 0;</span><br><span> }</span><br><span style="color: hsl(120, 100%, 40%);">+</span><br><span style="color: hsl(120, 100%, 40%);">+#define  USB_SID_DISPLAYPORT 0xff01</span><br><span style="color: hsl(120, 100%, 40%);">+void google_chromeec_wait_for_display(void)</span><br><span style="color: hsl(120, 100%, 40%);">+{</span><br><span style="color: hsl(120, 100%, 40%);">+ int count = 0;</span><br><span style="color: hsl(120, 100%, 40%);">+        printk(BIOS_INFO, "Waiting for display.");</span><br><span style="color: hsl(120, 100%, 40%);">+  while (google_chromeec_get_alternate_mode(USB_SID_DISPLAYPORT) != 1) {</span><br><span style="color: hsl(120, 100%, 40%);">+                if (count++ > 10) {</span><br><span style="color: hsl(120, 100%, 40%);">+                        printk(BIOS_WARNING, " Not ready\n");</span><br><span style="color: hsl(120, 100%, 40%);">+                       return;</span><br><span style="color: hsl(120, 100%, 40%);">+               }</span><br><span style="color: hsl(120, 100%, 40%);">+             udelay(200000);</span><br><span style="color: hsl(120, 100%, 40%);">+               printk(BIOS_INFO, ".");</span><br><span style="color: hsl(120, 100%, 40%);">+     }</span><br><span style="color: hsl(120, 100%, 40%);">+     printk(BIOS_INFO, " Ready\n");</span><br><span style="color: hsl(120, 100%, 40%);">+}</span><br><span>diff --git a/src/ec/google/chromeec/ec.h b/src/ec/google/chromeec/ec.h</span><br><span>index dde23c1..45d6f55 100644</span><br><span>--- a/src/ec/google/chromeec/ec.h</span><br><span>+++ b/src/ec/google/chromeec/ec.h</span><br><span>@@ -37,6 +37,7 @@</span><br><span> int google_ec_running_ro(void);</span><br><span> void google_chromeec_init(void);</span><br><span> int google_chromeec_get_alternate_mode(uint16_t svid);</span><br><span style="color: hsl(120, 100%, 40%);">+void google_chromeec_wait_for_display(void);</span><br><span> </span><br><span> /* Device events */</span><br><span> uint64_t google_chromeec_get_device_enabled_events(void);</span><br><span></span><br></pre><p>To view, visit <a href="https://review.coreboot.org/23745">change 23745</a>. To unsubscribe, or for help writing mail filters, visit <a href="https://review.coreboot.org/settings">settings</a>.</p><div itemscope itemtype="http://schema.org/EmailMessage"><div itemscope itemprop="action" itemtype="http://schema.org/ViewAction"><link itemprop="url" href="https://review.coreboot.org/23745"/><meta itemprop="name" content="View Change"/></div></div>

<div style="display:none"> Gerrit-Project: coreboot </div>
<div style="display:none"> Gerrit-Branch: master </div>
<div style="display:none"> Gerrit-MessageType: newchange </div>
<div style="display:none"> Gerrit-Change-Id: Ieee5db77bd6e147936ea8fc735dcbeffec98c0f8 </div>
<div style="display:none"> Gerrit-Change-Number: 23745 </div>
<div style="display:none"> Gerrit-PatchSet: 1 </div>
<div style="display:none"> Gerrit-Owner: Daisuke Nojiri <dnojiri@chromium.org> </div>