[Intel-gfx] [PATCH 01/10] drm/dp_helper: add defines for DP 1.2 and MST support.
Jingoo Han
jg1.han at samsung.com
Tue May 13 10:51:14 CEST 2014
On Monday, May 12, 2014 3:47 PM, Dave Airlie wrote:
>
> From: Dave Airlie <airlied at redhat.com>
>
> This just adds the defines from the DP 1.2 spec, which we
> will use later.
>
> Signed-off-by: Dave Airlie <airlied at redhat.com>
> ---
> include/drm/drm_dp_helper.h | 78 +++++++++++++++++++++++++++++++++++++++++++++
> 1 file changed, 78 insertions(+)
>
> diff --git a/include/drm/drm_dp_helper.h b/include/drm/drm_dp_helper.h
> index cfcacec..879836d 100644
> --- a/include/drm/drm_dp_helper.h
> +++ b/include/drm/drm_dp_helper.h
> @@ -37,6 +37,7 @@
> * eDP: Embedded DisplayPort version 1
> * DPI: DisplayPort Interoperability Guideline v1.1a
> * 1.2: DisplayPort 1.2
> + * MST: Multistream Transport - part of DP 1.2a
> *
> * 1.2 formally includes both eDP and DPI definitions.
> */
[.....]
> +# define DP_MCCS_IRQ (1 << 3)
> +# define DP_DOWN_REP_MSG_RDY (1 << 4) /* DP MST */
> +# define DP_UP_REQ_MSG_RDY (1 << 5) /* DP MST */
[.....]
>
> +#define DP_PAYLOAD_TABLE_UPDATE_STATUS 0x2c0 /* 1.2 MST */
Hi Dave Airlie,
What is the difference between 'DP MST' and '1.2 MST'?
If there is no difference, would you use the same comment
as below?
+# define DP_DOWN_REP_MSG_RDY (1 << 4) /* 1.2 MST */
+# define DP_UP_REQ_MSG_RDY (1 << 5) /* 1.2 MST */
Best regards,
Jingoo Han
[.....]
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