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drm/i915/bios: make child device order the priority order

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Make the child device order the priority order in sanitizing DDC pin and
AUX CH. First come, first served.

Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/34ab98880386a095422521ad39f4c080eeb3989a.1559308269.git.jani.nikula@intel.com
This commit is contained in:
Jani Nikula 2019-05-31 16:14:51 +03:00
parent 3633e5116d
commit 36a0f92020
1 changed files with 15 additions and 17 deletions
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32
drivers/gpu/drm/i915/intel_bios.c
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@ -1242,8 +1242,7 @@ static u8 translate_iboost(u8 val)
static void sanitize_ddc_pin(struct drm_i915_private *dev_priv,
enum port port)
{
const struct ddi_vbt_port_info *info =
&dev_priv->vbt.ddi_port_info[port];
struct ddi_vbt_port_info *info = &dev_priv->vbt.ddi_port_info[port];
enum port p;
if (!info->alternate_ddc_pin)
@ -1258,8 +1257,8 @@ static void sanitize_ddc_pin(struct drm_i915_private *dev_priv,
DRM_DEBUG_KMS("port %c trying to use the same DDC pin (0x%x) as port %c, "
"disabling port %c DVI/HDMI support\n",
port_name(p), i->alternate_ddc_pin,
port_name(port), port_name(p));
port_name(port), info->alternate_ddc_pin,
port_name(p), port_name(port));
/*
* If we have multiple ports supposedly sharing the
@ -1267,20 +1266,19 @@ static void sanitize_ddc_pin(struct drm_i915_private *dev_priv,
* port. Otherwise they share the same ddc bin and
* system couldn't communicate with them separately.
*
* Due to parsing the ports in child device order,
* a later device will always clobber an earlier one.
* Give child device order the priority, first come first
* served.
*/
i->supports_dvi = false;
i->supports_hdmi = false;
i->alternate_ddc_pin = 0;
info->supports_dvi = false;
info->supports_hdmi = false;
info->alternate_ddc_pin = 0;
}
}
static void sanitize_aux_ch(struct drm_i915_private *dev_priv,
enum port port)
{
const struct ddi_vbt_port_info *info =
&dev_priv->vbt.ddi_port_info[port];
struct ddi_vbt_port_info *info = &dev_priv->vbt.ddi_port_info[port];
enum port p;
if (!info->alternate_aux_channel)
@ -1295,8 +1293,8 @@ static void sanitize_aux_ch(struct drm_i915_private *dev_priv,
DRM_DEBUG_KMS("port %c trying to use the same AUX CH (0x%x) as port %c, "
"disabling port %c DP support\n",
port_name(p), i->alternate_aux_channel,
port_name(port), port_name(p));
port_name(port), info->alternate_aux_channel,
port_name(p), port_name(port));
/*
* If we have multiple ports supposedlt sharing the
@ -1304,11 +1302,11 @@ static void sanitize_aux_ch(struct drm_i915_private *dev_priv,
* port. Otherwise they share the same aux channel
* and system couldn't communicate with them separately.
*
* Due to parsing the ports in child device order,
* a later device will always clobber an earlier one.
* Give child device order the priority, first come first
* served.
*/
i->supports_dp = false;
i->alternate_aux_channel = 0;
info->supports_dp = false;
info->alternate_aux_channel = 0;
}
}