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drm/i915: don't register invalid gmbus pins for skl

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Do not expose invalid gmbus pins as i2c devices to userspace.

Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Imre Deak <imre.deak@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This commit is contained in:
Jani Nikula 2015-05-06 15:33:44 +03:00 committed by Daniel Vetter
parent c1bad5b652
commit 6364e67e4a
1 changed files with 10 additions and 0 deletions
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10
drivers/gpu/drm/i915/intel_i2c.c
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@ -56,6 +56,12 @@ static const struct gmbus_pin gmbus_pins_bdw[] = {
[GMBUS_PIN_DPD] = { "dpd", GPIOF },
};
static const struct gmbus_pin gmbus_pins_skl[] = {
[GMBUS_PIN_DPC] = { "dpc", GPIOD },
[GMBUS_PIN_DPB] = { "dpb", GPIOE },
[GMBUS_PIN_DPD] = { "dpd", GPIOF },
};
static const struct gmbus_pin gmbus_pins_bxt[] = {
[GMBUS_PIN_1_BXT] = { "dpb", PCH_GPIOB },
[GMBUS_PIN_2_BXT] = { "dpc", PCH_GPIOC },
@ -68,6 +74,8 @@ static const struct gmbus_pin *get_gmbus_pin(struct drm_i915_private *dev_priv,
{
if (IS_BROXTON(dev_priv))
return &gmbus_pins_bxt[pin];
else if (IS_SKYLAKE(dev_priv))
return &gmbus_pins_skl[pin];
else if (IS_BROADWELL(dev_priv))
return &gmbus_pins_bdw[pin];
else
@ -81,6 +89,8 @@ bool intel_gmbus_is_valid_pin(struct drm_i915_private *dev_priv,
if (IS_BROXTON(dev_priv))
size = ARRAY_SIZE(gmbus_pins_bxt);
else if (IS_SKYLAKE(dev_priv))
size = ARRAY_SIZE(gmbus_pins_skl);
else if (IS_BROADWELL(dev_priv))
size = ARRAY_SIZE(gmbus_pins_bdw);
else