From: Sean Paul <seanpaul@chromium.org>
To: Ramalingam C <ramalingam.c@intel.com>
Cc: intel-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org,
rodrigo.vivi@intel.com
Subject: Re: [PATCH v2 4/4] drm/i915: Fix downstream dev count read
Date: Thu, 29 Mar 2018 10:39:49 -0400 [thread overview]
Message-ID: <20180329143949.GE41885@art_vandelay> (raw)
In-Reply-To: <1522332548-15370-5-git-send-email-ramalingam.c@intel.com>
On Thu, Mar 29, 2018 at 07:39:08PM +0530, Ramalingam C wrote:
> In both HDMI and DP, device count is represented by 6:0 bits of a
> register(BInfo/Bstatus)
>
> So macro for bitmasking the device_count is fixed(0x3F->0x7F).
>
Reviewed-by: Sean Paul <seanpaul@chromium.org>
> Signed-off-by: Ramalingam C <ramalingam.c@intel.com>
> cc: Sean Paul <seanpaul@chromium.org>
> ---
> include/drm/drm_hdcp.h | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/include/drm/drm_hdcp.h b/include/drm/drm_hdcp.h
> index 562fa7df2637..98e63d870139 100644
> --- a/include/drm/drm_hdcp.h
> +++ b/include/drm/drm_hdcp.h
> @@ -19,7 +19,7 @@
> #define DRM_HDCP_RI_LEN 2
> #define DRM_HDCP_V_PRIME_PART_LEN 4
> #define DRM_HDCP_V_PRIME_NUM_PARTS 5
> -#define DRM_HDCP_NUM_DOWNSTREAM(x) (x & 0x3f)
> +#define DRM_HDCP_NUM_DOWNSTREAM(x) (x & 0x7f)
> #define DRM_HDCP_MAX_CASCADE_EXCEEDED(x) (x & BIT(3))
> #define DRM_HDCP_MAX_DEVICE_EXCEEDED(x) (x & BIT(7))
>
> --
> 2.7.4
>
--
Sean Paul, Software Engineer, Google / Chromium OS
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next prev parent reply other threads:[~2018-03-29 14:39 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-03-29 14:09 [PATCH v2 0/4] HDCP1.4 fixes Ramalingam C
2018-03-29 14:09 ` [PATCH v2 1/4] drm/i915: Read HDCP R0 thrice in case of mismatch Ramalingam C
2018-03-29 14:35 ` Sean Paul
2018-04-02 9:08 ` Ramalingam C
2018-03-29 14:09 ` [PATCH v2 2/4] drm/i915: Read Vprime thrice incase " Ramalingam C
2018-03-29 14:38 ` Sean Paul
2018-04-02 9:16 ` Ramalingam C
2018-03-29 14:09 ` [PATCH v2 3/4] drm/i915: Check hdcp key loadability Ramalingam C
2018-03-29 14:24 ` Ville Syrjälä
2018-04-02 9:05 ` Ramalingam C
2018-04-06 16:02 ` Ville Syrjälä
2018-04-09 8:28 ` Daniel Vetter
2018-04-11 8:27 ` Ramalingam C
2018-04-13 15:49 ` Daniel Vetter
2018-03-29 14:09 ` [PATCH v2 4/4] drm/i915: Fix downstream dev count read Ramalingam C
2018-03-29 14:39 ` Sean Paul [this message]
2018-03-29 14:12 ` [PATCH v2 0/4] HDCP1.4 fixes Ramalingam C
2018-03-29 14:45 ` ✓ Fi.CI.BAT: success for HDCP1.4 fixes (rev3) Patchwork
2018-03-29 17:53 ` ✗ Fi.CI.IGT: failure " Patchwork
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