Do no expose invalid gmbus pins as i2c devices to userspace.
Signed-off-by: Jani Nikula <jani.nikula@xxxxxxxxx>
---
drivers/gpu/drm/i915/intel_i2c.c | 11 +++++++++++
1 file changed, 11 insertions(+)
diff --git a/drivers/gpu/drm/i915/intel_i2c.c b/drivers/gpu/drm/i915/intel_i2c.c
index 3daa7e322326..76070c4e76b3 100644
--- a/drivers/gpu/drm/i915/intel_i2c.c
+++ b/drivers/gpu/drm/i915/intel_i2c.c
@@ -49,6 +49,13 @@ static const struct gmbus_pin gmbus_pins[] = {
[GMBUS_PIN_DPD] = { "dpd", GPIOF },
};
+static const struct gmbus_pin gmbus_pins_bdw[] = {
+ [GMBUS_PIN_VGADDC] = { "vga", GPIOA },
+ [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 },
@@ -61,6 +68,8 @@ 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_BROADWELL(dev_priv))
+ return &gmbus_pins_bdw[pin];
else
return &gmbus_pins[pin];
}
@@ -72,6 +81,8 @@ 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_BROADWELL(dev_priv))
+ size = ARRAY_SIZE(gmbus_pins_bdw);
else
size = ARRAY_SIZE(gmbus_pins);
--
2.1.4
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