Reviewed-by: Xiong Zhang <xiong.y.zhang@xxxxxxxxx>
thanks
> -----Original Message-----
> From: Vivi, Rodrigo
> Sent: Saturday, August 8, 2015 8:35 AM
> To: intel-gfx@xxxxxxxxxxxxxxxxxxxxx
> Cc: Vivi, Rodrigo; Zhang, Xiong Y
> Subject: [PATCH 8/6] drm/i915/skl: Enable DDI-E
>
> There are OEMs using DDI-E out there,
> so let's enable it.
>
> Unfortunately there is no detection bit for DDI-E So we need to rely on VBT for
> that.
>
> I also need to give credits to Xiong since before seing his approach to check
> info->support_* I was creating an ugly
> vbt->ddie_sfuse_strap in order to propagate the ddi presence info
>
> v2: Rebased as last patch in the series. since all other patches in this series are
> needed for anything working propperly on DDI-E.
>
> Credits-to: "Zhang, Xiong Y" <xiong.y.zhang@xxxxxxxxx>
> Cc: "Zhang, Xiong Y" <xiong.y.zhang@xxxxxxxxx>
> Signed-off-by: Rodrigo Vivi <rodrigo.vivi@xxxxxxxxx>
> ---
> drivers/gpu/drm/i915/intel_bios.c | 14 +++++++-------
> drivers/gpu/drm/i915/intel_bios.h | 2 ++
> drivers/gpu/drm/i915/intel_display.c | 9 +++++++++
> 3 files changed, 18 insertions(+), 7 deletions(-)
>
> diff --git a/drivers/gpu/drm/i915/intel_bios.c
> b/drivers/gpu/drm/i915/intel_bios.c
> index c417973..c5b5a59b 100644
> --- a/drivers/gpu/drm/i915/intel_bios.c
> +++ b/drivers/gpu/drm/i915/intel_bios.c
> @@ -898,19 +898,19 @@ static void parse_ddi_port(struct drm_i915_private
> *dev_priv, enum port port,
> /* Each DDI port can have more than one value on the "DVO Port" field,
> * so look for all the possible values for each port and abort if more
> * than one is found. */
> - int dvo_ports[][2] = {
> - {DVO_PORT_HDMIA, DVO_PORT_DPA},
> - {DVO_PORT_HDMIB, DVO_PORT_DPB},
> - {DVO_PORT_HDMIC, DVO_PORT_DPC},
> - {DVO_PORT_HDMID, DVO_PORT_DPD},
> - {DVO_PORT_CRT, -1 /* Port E can only be DVO_PORT_CRT */ },
> + int dvo_ports[][3] = {
> + {DVO_PORT_HDMIA, DVO_PORT_DPA, -1},
> + {DVO_PORT_HDMIB, DVO_PORT_DPB, -1},
> + {DVO_PORT_HDMIC, DVO_PORT_DPC, -1},
> + {DVO_PORT_HDMID, DVO_PORT_DPD, -1},
> + {DVO_PORT_CRT, DVO_PORT_HDMIE, DVO_PORT_DPE},
> };
>
> /* Find the child device to use, abort if more than one found. */
> for (i = 0; i < dev_priv->vbt.child_dev_num; i++) {
> it = dev_priv->vbt.child_dev + i;
>
> - for (j = 0; j < 2; j++) {
> + for (j = 0; j < 3; j++) {
> if (dvo_ports[port][j] == -1)
> break;
>
> diff --git a/drivers/gpu/drm/i915/intel_bios.h
> b/drivers/gpu/drm/i915/intel_bios.h
> index 77bf1dd..a2ef0df 100644
> --- a/drivers/gpu/drm/i915/intel_bios.h
> +++ b/drivers/gpu/drm/i915/intel_bios.h
> @@ -759,6 +759,8 @@ int intel_parse_bios(struct drm_device *dev);
> #define DVO_PORT_DPC 8
> #define DVO_PORT_DPD 9
> #define DVO_PORT_DPA 10
> +#define DVO_PORT_DPE 11
> +#define DVO_PORT_HDMIE 12
> #define DVO_PORT_MIPIA 21
> #define DVO_PORT_MIPIB 22
> #define DVO_PORT_MIPIC 23
> diff --git a/drivers/gpu/drm/i915/intel_display.c
> b/drivers/gpu/drm/i915/intel_display.c
> index fcf1230..7bf6209 100644
> --- a/drivers/gpu/drm/i915/intel_display.c
> +++ b/drivers/gpu/drm/i915/intel_display.c
> @@ -13961,6 +13961,15 @@ static void intel_setup_outputs(struct
> drm_device *dev)
> intel_ddi_init(dev, PORT_C);
> if (found & SFUSE_STRAP_DDID_DETECTED)
> intel_ddi_init(dev, PORT_D);
> + /*
> + * On SKL we don't have a way to detect DDI-E so we rely on VBT.
> + */
> + if (IS_SKYLAKE(dev) &&
> + (dev_priv->vbt.ddi_port_info[PORT_E].supports_dp ||
> + dev_priv->vbt.ddi_port_info[PORT_E].supports_dvi ||
> + dev_priv->vbt.ddi_port_info[PORT_E].supports_hdmi))
> + intel_ddi_init(dev, PORT_E);
> +
> } else if (HAS_PCH_SPLIT(dev)) {
> int found;
> dpd_is_edp = intel_dp_is_edp(dev, PORT_D);
> --
> 2.4.3
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