github-mirror/linux
1
0
Fork 0
mirror of https://github.com/torvalds/linux.git synced 2026-05-22 14:12:07 +02:00
Code Issues Actions Packages Projects Releases Wiki Activity Graph

drm/bridge: it6505: fix HDCP encryption when R0 ready

Browse Source 
When starting HDCP authentication, HDCP encryption should be enabled
when R0'is checked.

Change encryption enables time at R0' ready.
The hardware HDCP engine trigger is changed and the repeater KSV fails
will restart HDCP.

Signed-off-by: Hermes Wu <hermes.wu@ite.com.tw>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20241230-v7-upstream-v7-6-e0fdd4844703@ite.corp-partner.google.com
This commit is contained in:
Hermes Wu 2024-12-30 18:51:24 +08:00 committed by Dmitry Baryshkov
parent 0fd2ff47d8
commit 8c01b0bae2
1 changed files with 9 additions and 8 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

17
drivers/gpu/drm/bridge/ite-it6505.c
View File

@ -2092,15 +2092,12 @@ static void it6505_hdcp_wait_ksv_list(struct work_struct *work)
ksv_list_check = it6505_hdcp_part2_ksvlist_check(it6505);
DRM_DEV_DEBUG_DRIVER(dev, "ksv list ready, ksv list check %s",
ksv_list_check ? "pass" : "fail");
if (ksv_list_check) {
it6505_set_bits(it6505, REG_HDCP_TRIGGER,
HDCP_TRIGGER_KSV_DONE, HDCP_TRIGGER_KSV_DONE);
if (ksv_list_check)
return;
}
timeout:
it6505_set_bits(it6505, REG_HDCP_TRIGGER,
HDCP_TRIGGER_KSV_DONE | HDCP_TRIGGER_KSV_FAIL,
HDCP_TRIGGER_KSV_DONE | HDCP_TRIGGER_KSV_FAIL);
it6505_start_hdcp(it6505);
}
static void it6505_hdcp_work(struct work_struct *work)
@ -2473,7 +2470,11 @@ static void it6505_irq_hdcp_ksv_check(struct it6505 *it6505)
{
struct device *dev = it6505->dev;
DRM_DEV_DEBUG_DRIVER(dev, "HDCP event Interrupt");
DRM_DEV_DEBUG_DRIVER(dev, "HDCP repeater R0 event Interrupt");
/* 1B01 HDCP encription should start when R0 is ready*/
it6505_set_bits(it6505, REG_HDCP_TRIGGER,
HDCP_TRIGGER_KSV_DONE, HDCP_TRIGGER_KSV_DONE);
schedule_work(&it6505->hdcp_wait_ksv_list);
}