summaryrefslogtreecommitdiff
path: root/drivers/gpu/drm/i915
diff options
context:
space:
mode:
authorZhao Yakui <yakui.zhao@intel.com>2010-02-08 21:35:12 +0800
committerEric Anholt <eric@anholt.net>2010-02-26 13:23:22 -0800
commit6070a4a928f8c92b9fae7d6717ebbb05f425d6b2 (patch)
treed80302d5453810064a0c5f324294926ed507a8a7 /drivers/gpu/drm/i915
parent469d129664c5b83f37ca74913700d416d584833b (diff)
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 <yakui.zhao@intel.com> Tested-by: Vance <liangghv@sg.ibm.com> Cc: stable@kernel.org Signed-off-by: Eric Anholt <eric@anholt.net>
Diffstat (limited to 'drivers/gpu/drm/i915')
-rw-r--r--drivers/gpu/drm/i915/intel_sdvo.c23
1 files changed, 22 insertions, 1 deletions
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 <linux/dmi.h>
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;