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drm/i915/dsi: skip gpio element execution when not supported 

Skip v3 gpio element because the support is not there, and skip gpio
element on non-vlv because the sideband code is vlv specific.

v2: the gpio stuff is currently only supported on vlv (Ville)

Cc: drm-intel-fixes@lists.freedesktop.org
Fixes: 2a33d93486 ("drm/i915/bios: add support for MIPI sequence block v3")
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1454604767-2440-1-git-send-email-jani.nikula@intel.com
(cherry picked from commit 96afef1d5a)
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
This commit is contained in:
Jani Nikula 2016-02-04 18:52:47 +02:00
parent 26f6f2d301
commit bfadcded51
1 changed files with 13 additions and 0 deletions
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13
drivers/gpu/drm/i915/intel_dsi_panel_vbt.c
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@ -204,6 +204,9 @@ static const u8 *mipi_exec_gpio(struct intel_dsi *intel_dsi, const u8 *data)
struct drm_device *dev = intel_dsi->base.base.dev;
struct drm_i915_private *dev_priv = dev->dev_private;
if (dev_priv->vbt.dsi.seq_version >= 3)
data++;
gpio = *data++;
/* pull up/down */
@ -214,6 +217,16 @@ static const u8 *mipi_exec_gpio(struct intel_dsi *intel_dsi, const u8 *data)
goto out;
}
if (!IS_VALLEYVIEW(dev_priv)) {
DRM_DEBUG_KMS("GPIO element not supported on this platform\n");
goto out;
}
if (dev_priv->vbt.dsi.seq_version >= 3) {
DRM_DEBUG_KMS("GPIO element v3 not supported\n");
goto out;
}
function = gtable[gpio].function_reg;
pad = gtable[gpio].pad_reg;