From: Kamal Mostafa <[email protected]> Boot params quirks_set and quirks_mask allow the user to enable or inhibit any dmi-matched quirks, overriding the dmi match table. Examples:
i915.quirks_set=0x2 - enables QUIRK_LVDS_SSC_DISABLE i915.quirks_set=0x8 - enables QUIRK_NO_PCH_PWM_ENABLE i915.quirks_mask=0x8 - disables QUIRK_NO_PCH_PWM_ENABLE i915.quirks_mask=0xFF - disables all quirks Signed-off-by: Kamal Mostafa <[email protected]> Cc: [email protected] Signed-off-by: Rodrigo Vivi <[email protected]> --- drivers/gpu/drm/i915/intel_display.c | 15 +++++++++++++++ 1 file changed, 15 insertions(+) diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c index 1eabca3..12607f2 100644 --- a/drivers/gpu/drm/i915/intel_display.c +++ b/drivers/gpu/drm/i915/intel_display.c @@ -10043,8 +10043,19 @@ static struct intel_quirk intel_quirks[] = { { 0x0166, 0x1028, 0x058b, quirk_no_pcm_pwm_enable }, }; +unsigned long i915_quirks_set __read_mostly = 0; +module_param_named(quirks_set, i915_quirks_set, ulong, 0600); +MODULE_PARM_DESC(quirks_set, + "Enable specified quirks bits."); + +unsigned long i915_quirks_mask __read_mostly = 0; +module_param_named(quirks_mask, i915_quirks_mask, ulong, 0600); +MODULE_PARM_DESC(quirks_mask, + "Disable specified quirks bits (override dmi match)."); + static void intel_init_quirks(struct drm_device *dev) { + struct drm_i915_private *dev_priv = dev->dev_private; struct pci_dev *d = dev->pdev; int i; @@ -10062,6 +10073,10 @@ static void intel_init_quirks(struct drm_device *dev) if (dmi_check_system(*intel_dmi_quirks[i].dmi_id_list) != 0) intel_dmi_quirks[i].hook(dev); } + + /* handle user-specified quirks overrides */ + dev_priv->quirks |= i915_quirks_set; + dev_priv->quirks &= ~i915_quirks_mask; } /* Disable the VGA plane that we never use */ -- 1.8.1.4 -- To unsubscribe from this list: send the line "unsubscribe stable" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
