From 6070a4a928f8c92b9fae7d6717ebbb05f425d6b2 Mon Sep 17 00:00:00 2001 From: Zhao Yakui Date: Mon, 8 Feb 2010 21:35:12 +0800 Subject: [PATCH] drm/i915: Use a dmi quirk to skip a broken SDVO TV output. This IBM system has a multi-function SDVO card that reports both VGA and TV, but the system has no TV connector. The TV connector always reported as connected, which would lead to poor modesetting choices. https://bugs.freedesktop.org/show_bug.cgi?id=25787 Signed-off-by: Zhao Yakui Tested-by: Vance Cc: stable@kernel.org Signed-off-by: Eric Anholt --- drivers/gpu/drm/i915/intel_sdvo.c | 23 ++++++++++++++++++++++- 1 file changed, 22 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/i915/intel_sdvo.c b/drivers/gpu/drm/i915/intel_sdvo.c index 82678d30ab06..48daee5c9c63 100644 --- a/drivers/gpu/drm/i915/intel_sdvo.c +++ b/drivers/gpu/drm/i915/intel_sdvo.c @@ -35,6 +35,7 @@ #include "i915_drm.h" #include "i915_drv.h" #include "intel_sdvo_regs.h" +#include static char *tv_format_names[] = { "NTSC_M" , "NTSC_J" , "NTSC_443", @@ -2283,6 +2284,25 @@ intel_sdvo_get_slave_addr(struct drm_device *dev, int output_device) return 0x72; } +static int intel_sdvo_bad_tv_callback(const struct dmi_system_id *id) +{ + DRM_DEBUG_KMS("Ignoring bad SDVO TV connector for %s\n", id->ident); + return 1; +} + +static struct dmi_system_id intel_sdvo_bad_tv[] = { + { + .callback = intel_sdvo_bad_tv_callback, + .ident = "IntelG45/ICH10R/DME1737", + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "IBM CORPORATION"), + DMI_MATCH(DMI_PRODUCT_NAME, "4800784"), + }, + }, + + { } /* terminating entry */ +}; + static bool intel_sdvo_output_setup(struct intel_output *intel_output, uint16_t flags) { @@ -2323,7 +2343,8 @@ intel_sdvo_output_setup(struct intel_output *intel_output, uint16_t flags) (1 << INTEL_SDVO_NON_TV_CLONE_BIT) | (1 << INTEL_ANALOG_CLONE_BIT); } - } else if (flags & SDVO_OUTPUT_SVID0) { + } else if ((flags & SDVO_OUTPUT_SVID0) && + !dmi_check_system(intel_sdvo_bad_tv)) { sdvo_priv->controlled_output = SDVO_OUTPUT_SVID0; encoder->encoder_type = DRM_MODE_ENCODER_TVDAC; -- 2.30.2