Re: [PATCH v10 12/40] drm: HDCP2.2 link check period

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On 2/4/2019 7:54 PM, Shankar, Uma wrote:

-----Original Message-----
From: C, Ramalingam
Sent: Thursday, January 31, 2019 12:29 PM
To: intel-gfx@xxxxxxxxxxxxxxxxxxxxx; dri-devel@xxxxxxxxxxxxxxxxxxxxx;
daniel.vetter@xxxxxxxx; Winkler, Tomas <tomas.winkler@xxxxxxxxx>; Shankar,
Uma <uma.shankar@xxxxxxxxx>
Cc: C, Ramalingam <ramalingam.c@xxxxxxxxx>
Subject: [PATCH v10 12/40] drm: HDCP2.2 link check period

Time period for HDCP2.2 link check.

Signed-off-by: Ramalingam C <ramalingam.c@xxxxxxxxx>
Reviewed-by: Daniel Vetter <daniel.vetter@xxxxxxxx>
Not sure if we need a separate patch for this. Could be merged where check_link is
introduced for hdcp2.2.

If there is a valid reasoning, no hard objection and it looks ok in general. So
drm level change is convenient to have in separate patch to get approval from dri-devel.

--Ram

Reviewed-by: Uma Shankar <uma.shankar@xxxxxxxxx>

---
include/drm/drm_hdcp.h | 1 +
1 file changed, 1 insertion(+)

diff --git a/include/drm/drm_hdcp.h b/include/drm/drm_hdcp.h index
7260b31af276..d4e98b11b4aa 100644
--- a/include/drm/drm_hdcp.h
+++ b/include/drm/drm_hdcp.h
@@ -13,6 +13,7 @@

/* Period of hdcp checks (to ensure we're still authenticated) */
#define DRM_HDCP_CHECK_PERIOD_MS		(128 * 16)
+#define DRM_HDCP2_CHECK_PERIOD_MS		500

/* Shared lengths/masks between HDMI/DVI/DisplayPort */
#define DRM_HDCP_AN_LEN				8
--
2.7.4

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